Technical News
Nov 13 2019
Descartes and Elastest Working Together
java.lang.NullPointerException
at com.xpn.xwiki.web.XWikiServletURLFactory.findAttachmentForDocRevision(XWikiServletURLFactory.java:904)
at com.xpn.xwiki.web.XWikiServletURLFactory.createAttachmentURL(XWikiServletURLFactory.java:672)
at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5578)
at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5589)
at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5626)
at com.xpn.xwiki.doc.DefaultDocumentAccessBridge.getAttachmentURL(DefaultDocumentAccessBridge.java:799)
at org.xwiki.rendering.internal.wiki.XWikiWikiModel.getLinkURL(XWikiWikiModel.java:155)
at org.xwiki.rendering.internal.wiki.XWikiWikiModel.getImageURL(XWikiWikiModel.java:185)
at org.xwiki.rendering.internal.renderer.xhtml.image.AttachmentXHTMLImageTypeRenderer.getImageSrcAttributeValue(AttachmentXHTMLImageTypeRenderer.java:75)
at org.xwiki.rendering.internal.renderer.xhtml.image.AbstractXHTMLImageTypeRenderer.onImage(AbstractXHTMLImageTypeRenderer.java:106)
at org.xwiki.rendering.internal.renderer.xhtml.image.DefaultXHTMLImageRenderer.onImage(DefaultXHTMLImageRenderer.java:82)
at org.xwiki.rendering.internal.renderer.xhtml.XHTMLChainingRenderer.onImage(XHTMLChainingRenderer.java:599)
at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607)
at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607)
at org.xwiki.rendering.listener.chaining.EmptyBlockChainingListener.onImage(EmptyBlockChainingListener.java:457)
at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607)
at org.xwiki.rendering.listener.chaining.BlockStateChainingListener.onImage(BlockStateChainingListener.java:877)
at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607)
at org.xwiki.rendering.block.ImageBlock.traverse(ImageBlock.java:143)
at org.xwiki.rendering.block.AbstractBlock.traverse(AbstractBlock.java:593)
at org.xwiki.rendering.block.AbstractBlock.traverse(AbstractBlock.java:593)
at org.xwiki.rendering.internal.renderer.AbstractBlockRenderer.render(AbstractBlockRenderer.java:63)
at org.xwiki.rendering.internal.renderer.AbstractBlockRenderer.render(AbstractBlockRenderer.java:55)
at com.xpn.xwiki.doc.XWikiDocument.renderXDOM(XWikiDocument.java:9100)
at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1369)
at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1691)
at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1600)
at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1554)
at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:859)
at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:832)
at jdk.internal.reflect.GeneratedMethodAccessor877.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554)
at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221)
at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368)
at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.directive.Foreach.renderBlock(Foreach.java:309)
at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:279)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.directive.Foreach.renderBlock(Foreach.java:309)
at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:279)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)
at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)
at org.apache.velocity.Template.merge(Template.java:358)
at org.apache.velocity.Template.merge(Template.java:262)
at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225)
at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:173)
at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:177)
at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:60)
at org.xwiki.rendering.macro.script.AbstractScriptMacro.evaluateBlock(AbstractScriptMacro.java:279)
at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:182)
at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:58)
at org.xwiki.rendering.internal.transformation.macro.MacroTransformation.transform(MacroTransformation.java:311)
at org.xwiki.rendering.internal.transformation.DefaultRenderingContext.transformInContext(DefaultRenderingContext.java:183)
at org.xwiki.rendering.internal.transformation.DefaultTransformationManager.performTransformations(DefaultTransformationManager.java:88)
at org.xwiki.display.internal.DocumentContentAsyncExecutor.executeInCurrentExecutionContext(DocumentContentAsyncExecutor.java:395)
at org.xwiki.display.internal.DocumentContentAsyncExecutor.execute(DocumentContentAsyncExecutor.java:268)
at org.xwiki.display.internal.DocumentContentAsyncRenderer.execute(DocumentContentAsyncRenderer.java:112)
at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:157)
at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:54)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:290)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267)
at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.execute(DefaultBlockAsyncRendererExecutor.java:125)
at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:67)
at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:43)
at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:96)
at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:39)
at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:123)
at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:52)
at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:68)
at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:42)
at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1366)
at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1503)
at com.xpn.xwiki.doc.XWikiDocument.displayDocument(XWikiDocument.java:1452)
at com.xpn.xwiki.doc.XWikiDocument.displayDocument(XWikiDocument.java:1421)
at com.xpn.xwiki.api.Document.displayDocument(Document.java:787)
at jdk.internal.reflect.GeneratedMethodAccessor553.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554)
at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221)
at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368)
at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:704)
at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:75)
at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:242)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)
at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:190)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.xwiki.velocity.internal.directive.TryCatchDirective.render(TryCatchDirective.java:86)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)
at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)
at org.apache.velocity.Template.merge(Template.java:358)
at org.apache.velocity.Template.merge(Template.java:262)
at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225)
at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284)
at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267)
at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:853)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:808)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:800)
at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79)
at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73)
at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54)
at jdk.internal.reflect.GeneratedMethodAccessor285.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554)
at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221)
at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368)
at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)
at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)
at org.apache.velocity.Template.merge(Template.java:358)
at org.apache.velocity.Template.merge(Template.java:262)
at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225)
at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284)
at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267)
at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:853)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:808)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:800)
at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79)
at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73)
at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54)
at jdk.internal.reflect.GeneratedMethodAccessor285.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554)
at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221)
at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368)
at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)
at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:190)
at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)
at org.apache.velocity.Template.merge(Template.java:358)
at org.apache.velocity.Template.merge(Template.java:262)
at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225)
at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284)
at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267)
at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:846)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:832)
at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:91)
at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:85)
at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2565)
at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:180)
at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:651)
at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:339)
at com.xpn.xwiki.web.LegacyActionServlet.service(LegacyActionServlet.java:108)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:122)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.xwiki.wysiwyg.filter.ConversionFilter.doFilter(ConversionFilter.java:61)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:132)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176)
at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145)
at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92)
at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:710)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:457)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:384)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312)
at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:213)
at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:171)
at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145)
at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92)
at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:764)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:354)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:888)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1684)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:829)
Patxi Gortázar, Professor at Universidad Rey Juan Carlos and Elastest project coordinator, joined the latest STAMP plenary meeting in Madrid last October 9th, 2019.
Elastest is providing observability tools to understand what is going on in the code of a given software when it fails. Stamp tools, on their side, improve the quality of the test cases. Applying STAMP Descartes in a Java project can bring useful insights of the mutants that survive, while ElasTest offers accurate observability tools. Using both open source tools together can provide more information about how a DevOps team is performing on test technologies, including mutation testing and software testing automation.
For more information about this integration, read the Elastest article Amplifiying the value of your tests and check out the demo in the Elastest live instance.
Oct 31 2019
Polyglot Applications and Mutation Testing
java.lang.NullPointerException
at com.xpn.xwiki.web.XWikiServletURLFactory.findAttachmentForDocRevision(XWikiServletURLFactory.java:904)
at com.xpn.xwiki.web.XWikiServletURLFactory.createAttachmentURL(XWikiServletURLFactory.java:672)
at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5578)
at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5589)
at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5626)
at com.xpn.xwiki.doc.DefaultDocumentAccessBridge.getAttachmentURL(DefaultDocumentAccessBridge.java:799)
at org.xwiki.rendering.internal.wiki.XWikiWikiModel.getLinkURL(XWikiWikiModel.java:155)
at org.xwiki.rendering.internal.wiki.XWikiWikiModel.getImageURL(XWikiWikiModel.java:185)
at org.xwiki.rendering.internal.renderer.xhtml.image.AttachmentXHTMLImageTypeRenderer.getImageSrcAttributeValue(AttachmentXHTMLImageTypeRenderer.java:75)
at org.xwiki.rendering.internal.renderer.xhtml.image.AbstractXHTMLImageTypeRenderer.onImage(AbstractXHTMLImageTypeRenderer.java:106)
at org.xwiki.rendering.internal.renderer.xhtml.image.DefaultXHTMLImageRenderer.onImage(DefaultXHTMLImageRenderer.java:82)
at org.xwiki.rendering.internal.renderer.xhtml.XHTMLChainingRenderer.onImage(XHTMLChainingRenderer.java:599)
at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607)
at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607)
at org.xwiki.rendering.listener.chaining.EmptyBlockChainingListener.onImage(EmptyBlockChainingListener.java:457)
at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607)
at org.xwiki.rendering.listener.chaining.BlockStateChainingListener.onImage(BlockStateChainingListener.java:877)
at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607)
at org.xwiki.rendering.block.ImageBlock.traverse(ImageBlock.java:143)
at org.xwiki.rendering.block.AbstractBlock.traverse(AbstractBlock.java:593)
at org.xwiki.rendering.block.AbstractBlock.traverse(AbstractBlock.java:593)
at org.xwiki.rendering.internal.renderer.AbstractBlockRenderer.render(AbstractBlockRenderer.java:63)
at org.xwiki.rendering.internal.renderer.AbstractBlockRenderer.render(AbstractBlockRenderer.java:55)
at com.xpn.xwiki.doc.XWikiDocument.renderXDOM(XWikiDocument.java:9100)
at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1369)
at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1691)
at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1600)
at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1554)
at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:859)
at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:832)
at jdk.internal.reflect.GeneratedMethodAccessor877.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554)
at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221)
at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368)
at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.directive.Foreach.renderBlock(Foreach.java:309)
at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:279)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.directive.Foreach.renderBlock(Foreach.java:309)
at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:279)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)
at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)
at org.apache.velocity.Template.merge(Template.java:358)
at org.apache.velocity.Template.merge(Template.java:262)
at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225)
at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:173)
at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:177)
at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:60)
at org.xwiki.rendering.macro.script.AbstractScriptMacro.evaluateBlock(AbstractScriptMacro.java:279)
at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:182)
at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:58)
at org.xwiki.rendering.internal.transformation.macro.MacroTransformation.transform(MacroTransformation.java:311)
at org.xwiki.rendering.internal.transformation.DefaultRenderingContext.transformInContext(DefaultRenderingContext.java:183)
at org.xwiki.rendering.internal.transformation.DefaultTransformationManager.performTransformations(DefaultTransformationManager.java:88)
at org.xwiki.display.internal.DocumentContentAsyncExecutor.executeInCurrentExecutionContext(DocumentContentAsyncExecutor.java:395)
at org.xwiki.display.internal.DocumentContentAsyncExecutor.execute(DocumentContentAsyncExecutor.java:268)
at org.xwiki.display.internal.DocumentContentAsyncRenderer.execute(DocumentContentAsyncRenderer.java:112)
at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:157)
at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:54)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:290)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267)
at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.execute(DefaultBlockAsyncRendererExecutor.java:125)
at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:67)
at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:43)
at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:96)
at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:39)
at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:123)
at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:52)
at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:68)
at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:42)
at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1366)
at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1503)
at com.xpn.xwiki.doc.XWikiDocument.displayDocument(XWikiDocument.java:1452)
at com.xpn.xwiki.doc.XWikiDocument.displayDocument(XWikiDocument.java:1421)
at com.xpn.xwiki.api.Document.displayDocument(Document.java:787)
at jdk.internal.reflect.GeneratedMethodAccessor553.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554)
at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221)
at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368)
at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:704)
at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:75)
at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:242)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)
at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:190)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.xwiki.velocity.internal.directive.TryCatchDirective.render(TryCatchDirective.java:86)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)
at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)
at org.apache.velocity.Template.merge(Template.java:358)
at org.apache.velocity.Template.merge(Template.java:262)
at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225)
at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284)
at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267)
at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:853)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:808)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:800)
at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79)
at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73)
at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54)
at jdk.internal.reflect.GeneratedMethodAccessor285.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554)
at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221)
at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368)
at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)
at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)
at org.apache.velocity.Template.merge(Template.java:358)
at org.apache.velocity.Template.merge(Template.java:262)
at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225)
at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284)
at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267)
at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:853)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:808)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:800)
at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79)
at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73)
at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54)
at jdk.internal.reflect.GeneratedMethodAccessor285.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554)
at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221)
at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368)
at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)
at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:190)
at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)
at org.apache.velocity.Template.merge(Template.java:358)
at org.apache.velocity.Template.merge(Template.java:262)
at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225)
at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284)
at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267)
at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:846)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:832)
at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:91)
at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:85)
at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2565)
at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:180)
at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:651)
at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:339)
at com.xpn.xwiki.web.LegacyActionServlet.service(LegacyActionServlet.java:108)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:122)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.xwiki.wysiwyg.filter.ConversionFilter.doFilter(ConversionFilter.java:61)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:132)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176)
at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145)
at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92)
at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:710)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:457)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:384)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312)
at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:213)
at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:171)
at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145)
at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92)
at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:764)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:354)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:888)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1684)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:829)
In your Edge computing, Cloud computing or IoT environment, chances are you're mixing several services written in different languages.
"Multiple modern architectures are now polyglot, with a different language on the server and the clients, or even different languages among microservices", says Martin Monperrus, Professor at KTH.
Google, eBay, Twitter, and Amazon are among the big technology companies that have evolved to support a polyglot microservices architecture. "The essence of a polyglot architecture is to delegate the decision over which technology stack and programming languages to use to the service developers", explains Tripta Gupta in her article entitled Analyzing Polyglot Microservices.
In STAMP, we focus on Java because it's the #1 language for server-side enterprise applications. However, several mutation testing tools are now centered on popular development languages, including:
- Infection, a mutation testing tool for PHP
- MutPy and Mutmut, mutation testing tools for Python
- Muter, a mutation testing tool for Swift
- Unima, a mutation testing tool for C#
- Stryker Mutator, a mutation testing tool for C#, Scala, JavaScript and Typescript
This list is far from exhaustive. We'd like to ear about your favorite Mutation Testing Tools and your suggestions about STAMP Descartes.
Sep 03 2019
Descartes and DSpot Demo Applied to OW2 Joram
OW2 Joram is a JMS-compatible message-oriented middleware.
Thanks to a new Gitlab issue generator extension for Descartes, the Joram team found and solved a critical issue in unit tests.
The OW2 Joram project, as a STAMP use case, reveals:
- The detection of a critical issue in Joram unit tests, with Descartes (code is removed but the test suite is green - everything "normal"!).
- The issue is automatically inserted in the Joram Gitlab.
- Dspot, focused on the issue, generates a test that fixes it.
These tools were really used to detect and fix an issue in Joram: at least, the Descartes + Gitlab issue generation part (the issue was fixed by the Joram team, but without DSpot).
For more information:
- Trace all steps of the Descartes and DSpot Demo Applied to OW2 Joram
- Find the new Gitlab issue generator extension for Descartes on Github
Jun 14 2019
DSpot Amplification Visualization
In this post we share a visualization of the unit test amplification process. In the example, DSpot is used to amplify two unit tests from JSoup.
USE Media Macro instead this one ...
Jun 03 2019
Production Traffic For Testing
java.lang.NullPointerException at com.xpn.xwiki.web.XWikiServletURLFactory.findAttachmentForDocRevision(XWikiServletURLFactory.java:904) at com.xpn.xwiki.web.XWikiServletURLFactory.createAttachmentURL(XWikiServletURLFactory.java:672) at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5578) at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5589) at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5626) at com.xpn.xwiki.doc.DefaultDocumentAccessBridge.getAttachmentURL(DefaultDocumentAccessBridge.java:799) at org.xwiki.rendering.internal.wiki.XWikiWikiModel.getLinkURL(XWikiWikiModel.java:155) at org.xwiki.rendering.internal.wiki.XWikiWikiModel.getImageURL(XWikiWikiModel.java:185) at org.xwiki.rendering.internal.renderer.xhtml.image.AttachmentXHTMLImageTypeRenderer.getImageSrcAttributeValue(AttachmentXHTMLImageTypeRenderer.java:75) at org.xwiki.rendering.internal.renderer.xhtml.image.AbstractXHTMLImageTypeRenderer.onImage(AbstractXHTMLImageTypeRenderer.java:106) at org.xwiki.rendering.internal.renderer.xhtml.image.DefaultXHTMLImageRenderer.onImage(DefaultXHTMLImageRenderer.java:82) at org.xwiki.rendering.internal.renderer.xhtml.XHTMLChainingRenderer.onImage(XHTMLChainingRenderer.java:599) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.listener.chaining.EmptyBlockChainingListener.onImage(EmptyBlockChainingListener.java:457) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.listener.chaining.BlockStateChainingListener.onImage(BlockStateChainingListener.java:877) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.block.ImageBlock.traverse(ImageBlock.java:143) at org.xwiki.rendering.block.AbstractBlock.traverse(AbstractBlock.java:593) at org.xwiki.rendering.block.AbstractBlock.traverse(AbstractBlock.java:593) at org.xwiki.rendering.internal.renderer.AbstractBlockRenderer.render(AbstractBlockRenderer.java:63) at org.xwiki.rendering.internal.renderer.AbstractBlockRenderer.render(AbstractBlockRenderer.java:55) at com.xpn.xwiki.doc.XWikiDocument.renderXDOM(XWikiDocument.java:9100) at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1369) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1691) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1600) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1554) at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:859) at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:832) at jdk.internal.reflect.GeneratedMethodAccessor877.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.Foreach.renderBlock(Foreach.java:309) at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:279) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.Foreach.renderBlock(Foreach.java:309) at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:279) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:173) at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:177) at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:60) at org.xwiki.rendering.macro.script.AbstractScriptMacro.evaluateBlock(AbstractScriptMacro.java:279) at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:182) at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:58) at org.xwiki.rendering.internal.transformation.macro.MacroTransformation.transform(MacroTransformation.java:311) at org.xwiki.rendering.internal.transformation.DefaultRenderingContext.transformInContext(DefaultRenderingContext.java:183) at org.xwiki.rendering.internal.transformation.DefaultTransformationManager.performTransformations(DefaultTransformationManager.java:88) at org.xwiki.display.internal.DocumentContentAsyncExecutor.executeInCurrentExecutionContext(DocumentContentAsyncExecutor.java:395) at org.xwiki.display.internal.DocumentContentAsyncExecutor.execute(DocumentContentAsyncExecutor.java:268) at org.xwiki.display.internal.DocumentContentAsyncRenderer.execute(DocumentContentAsyncRenderer.java:112) at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:157) at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:290) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.execute(DefaultBlockAsyncRendererExecutor.java:125) at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:67) at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:43) at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:96) at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:39) at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:123) at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:52) at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:68) at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:42) at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1366) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1503) at com.xpn.xwiki.doc.XWikiDocument.displayDocument(XWikiDocument.java:1452) at com.xpn.xwiki.doc.XWikiDocument.displayDocument(XWikiDocument.java:1421) at com.xpn.xwiki.api.Document.displayDocument(Document.java:787) at jdk.internal.reflect.GeneratedMethodAccessor553.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:704) at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:75) at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:242) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:190) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.xwiki.velocity.internal.directive.TryCatchDirective.render(TryCatchDirective.java:86) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284) at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:853) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:808) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:800) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73) at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54) at jdk.internal.reflect.GeneratedMethodAccessor285.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284) at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:853) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:808) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:800) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73) at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54) at jdk.internal.reflect.GeneratedMethodAccessor285.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:190) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284) at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:846) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:832) at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:91) at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:85) at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2565) at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:180) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:651) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:339) at com.xpn.xwiki.web.LegacyActionServlet.service(LegacyActionServlet.java:108) at javax.servlet.http.HttpServlet.service(HttpServlet.java:733) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:122) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.wysiwyg.filter.ConversionFilter.doFilter(ConversionFilter.java:61) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:132) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176) at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145) at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:710) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:457) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:384) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312) at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:213) at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:171) at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145) at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:764) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:354) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:888) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1684) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.base/java.lang.Thread.run(Thread.java:829)
Publication: Information and Software Technology
Authors: Jeff Anderson, Maral Azizi, Saeed Salem, and Hyunsook Do
URL: https://www.sciencedirect.com/science/article/abs/pii/S0950584919301223?dgcid=rss_sd_all
Title: On the Use of Usage Patterns from Telemetry Data for Test Case Prioritization
In an original work about Production Traffic for Testing, Jeff Anderson, Maral Azizi, Saeed Salem, and Hyunsook Do present a new opportunity in the area of regression testing techniques. Here is the abstract:
Context: Modern applications contain pervasive telemetry to ensure reliability and enable monitoring and diagnosis. This presents a new opportunity in the area of regression testing techniques, as we now have the ability to consider usage profiles of the software when making decisions on test execution. Objective: The results of our prior work on test prioritization using telemetry data showed improvement rate on test suite reduction, and test execution time. The objective of this paper is to further investigate this approach and apply prioritization based on multiple prioritization algorithms in an enterprise level cloud application as well as open source projects. We aim to provide an effective prioritization scheme that practitioners can implement with minimum effort. The other objective is to compare the results and the benefits of this technique factors with code coverage-based prioritization approaches, which is the most commonly used test prioritization technique.
Method: We introduce a method for identifying usage patterns based on telemetry, which we refer to as “telemetry fingerprinting.” Through the use of various
algorithms to compute fingerprints, we conduct empirical studies on multiple software products to show that telemetry fingerprinting can be used to more effectively prioritize regression tests.
Results: Our experimental results show that the proposed techniques were able to reduce over 30 percent in regression test suite run times compared to the coverage-based prioritization technique in detecting discoverable faults. Further, the results indicate that fingerprints are effective in identifying usage patterns, and that the fingerprints can be applied to improve regression testing techniques.
Conclusion: In this research, we introduce the concept of fingerprinting software usage patterns through telemetry. We provide various algorithms to compute fingerprints and conduct empirical studies that show that fingerprints are effective in identifying distinct usage patterns. By applying these techniques, we believe that regression testing techniques can be improved beyond the current state-of-the-art, yielding additional cost and quality benefits.
- Read the Information & Software Technology article: "On the Use of Usage Patterns from Telemetry Data for Test Case Prioritization"
Apr 02 2019
Search-Based Test Case Implantation for Testing Untested Configurations
Publication: Information and Software Technology
Authors: Dipesh Pradhan, Shuai Wang, Tao Yue, Shaukat Ali, Marius Liaaen
URL: https://www.sciencedirect.com/science/article/pii/S0950584919300540?dgcid=rss_sd_all
Title: Search-Based Test Case Implantation for Testing Untested Configurations
Context
Modern large-scale software systems are highly configurable, and thus require a large number of test cases to be implemented and revised for testing a variety of system configurations. This makes testing highly configurable systems very expensive and time-consuming.
Objective
Driven by our industrial collaboration with a video conferencing company, we aim to automatically analyze and implant existing test cases (i.e., an original test suite) to test the untested configurations.
Method
We propose a search-based test case implantation approach (named as SBI) consisting of two key components:
1) Test case analyzer that statically analyzes each test case in the original test suite to obtain the progr am dependence graph for test case statements and
2) Test case implanter that uses multi-objective search to select suitable test cases for implantation using three operators, i.e., selection, crossover, and mutation (at the test suite level) and implants the selected test cases using a mutation operator at the test case level including three operations (i.e., addition, modification, and deletion).
Results
We empirically evaluated SBI with an industrial case study and an open source case study by comparing the implanted test suites produced by three variants of SBI with the original test suite using evaluation metrics such as statement coverage (SC), branch coverage (BC), and mutation score (MS). Results show that for both the case studies, the test suites implanted by the three variants of SBI performed significantly better than the original test suites. The best variant of SBI achieved on average 19.3% higher coverage of configuration variable values for both the case studies. Moreover, for the open source case study, the best variant of SBI managed to improve SC, BC, and MS with 5.0%, 7.9%, and 3.2%, respectively.
Conclusion
SBI can be applied to automatically implant a test suite with the aim of testing untested configurations and thus achieving higher configuration coverage.
Mar 22 2019
Configuration Tests: the JHipster web development stack use case
java.lang.NullPointerException at com.xpn.xwiki.web.XWikiServletURLFactory.findAttachmentForDocRevision(XWikiServletURLFactory.java:904) at com.xpn.xwiki.web.XWikiServletURLFactory.createAttachmentURL(XWikiServletURLFactory.java:672) at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5578) at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5589) at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5626) at com.xpn.xwiki.doc.DefaultDocumentAccessBridge.getAttachmentURL(DefaultDocumentAccessBridge.java:799) at org.xwiki.rendering.internal.wiki.XWikiWikiModel.getLinkURL(XWikiWikiModel.java:155) at org.xwiki.rendering.internal.wiki.XWikiWikiModel.getImageURL(XWikiWikiModel.java:185) at org.xwiki.rendering.internal.renderer.xhtml.image.AttachmentXHTMLImageTypeRenderer.getImageSrcAttributeValue(AttachmentXHTMLImageTypeRenderer.java:75) at org.xwiki.rendering.internal.renderer.xhtml.image.AbstractXHTMLImageTypeRenderer.onImage(AbstractXHTMLImageTypeRenderer.java:106) at org.xwiki.rendering.internal.renderer.xhtml.image.DefaultXHTMLImageRenderer.onImage(DefaultXHTMLImageRenderer.java:82) at org.xwiki.rendering.internal.renderer.xhtml.XHTMLChainingRenderer.onImage(XHTMLChainingRenderer.java:599) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.listener.chaining.EmptyBlockChainingListener.onImage(EmptyBlockChainingListener.java:457) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.listener.chaining.BlockStateChainingListener.onImage(BlockStateChainingListener.java:877) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.block.ImageBlock.traverse(ImageBlock.java:143) at org.xwiki.rendering.block.AbstractBlock.traverse(AbstractBlock.java:593) at org.xwiki.rendering.block.AbstractBlock.traverse(AbstractBlock.java:593) at org.xwiki.rendering.internal.renderer.AbstractBlockRenderer.render(AbstractBlockRenderer.java:63) at org.xwiki.rendering.internal.renderer.AbstractBlockRenderer.render(AbstractBlockRenderer.java:55) at com.xpn.xwiki.doc.XWikiDocument.renderXDOM(XWikiDocument.java:9100) at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1369) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1691) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1600) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1554) at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:859) at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:832) at jdk.internal.reflect.GeneratedMethodAccessor877.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.Foreach.renderBlock(Foreach.java:309) at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:279) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.Foreach.renderBlock(Foreach.java:309) at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:279) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:173) at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:177) at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:60) at org.xwiki.rendering.macro.script.AbstractScriptMacro.evaluateBlock(AbstractScriptMacro.java:279) at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:182) at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:58) at org.xwiki.rendering.internal.transformation.macro.MacroTransformation.transform(MacroTransformation.java:311) at org.xwiki.rendering.internal.transformation.DefaultRenderingContext.transformInContext(DefaultRenderingContext.java:183) at org.xwiki.rendering.internal.transformation.DefaultTransformationManager.performTransformations(DefaultTransformationManager.java:88) at org.xwiki.display.internal.DocumentContentAsyncExecutor.executeInCurrentExecutionContext(DocumentContentAsyncExecutor.java:395) at org.xwiki.display.internal.DocumentContentAsyncExecutor.execute(DocumentContentAsyncExecutor.java:268) at org.xwiki.display.internal.DocumentContentAsyncRenderer.execute(DocumentContentAsyncRenderer.java:112) at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:157) at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:290) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.execute(DefaultBlockAsyncRendererExecutor.java:125) at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:67) at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:43) at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:96) at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:39) at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:123) at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:52) at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:68) at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:42) at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1366) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1503) at com.xpn.xwiki.doc.XWikiDocument.displayDocument(XWikiDocument.java:1452) at com.xpn.xwiki.doc.XWikiDocument.displayDocument(XWikiDocument.java:1421) at com.xpn.xwiki.api.Document.displayDocument(Document.java:787) at jdk.internal.reflect.GeneratedMethodAccessor553.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:704) at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:75) at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:242) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:190) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.xwiki.velocity.internal.directive.TryCatchDirective.render(TryCatchDirective.java:86) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284) at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:853) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:808) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:800) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73) at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54) at jdk.internal.reflect.GeneratedMethodAccessor285.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284) at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:853) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:808) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:800) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73) at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54) at jdk.internal.reflect.GeneratedMethodAccessor285.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:190) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284) at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:846) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:832) at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:91) at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:85) at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2565) at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:180) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:651) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:339) at com.xpn.xwiki.web.LegacyActionServlet.service(LegacyActionServlet.java:108) at javax.servlet.http.HttpServlet.service(HttpServlet.java:733) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:122) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.wysiwyg.filter.ConversionFilter.doFilter(ConversionFilter.java:61) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:132) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176) at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145) at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:710) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:457) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:384) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312) at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:213) at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:171) at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145) at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:764) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:354) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:888) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1684) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.base/java.lang.Thread.run(Thread.java:829)
Title: Test them all, is it worth it? Assessing configuration sampling on the JHipster Web development stack
Authors: Axel Halin, Alexandre Nuttinck, Mathieu Acher, Xavier Devroey, Gilles Perrouin, Benoit Baudry
Publication: Springer Empirical Software Engineering, April 2019, Vol24
A group of software researchers, partially involved in the EU-funded STAMP project, has published interesting results based on configuration tests on JHipster, a popular open source application generator to create Spring Boot and Angular/React projects.
Abstract: Many approaches for testing configurable software systems start from the same assumption: it is impossible to test all configurations.
This motivated the definition of variability-aware abstractions and sampling techniques to cope with large configuration spaces. Yet, there is no theoretical barrier that prevents the exhaustive testing of all configurations by simply enumerating them if the effort required to do so remains acceptable. Not only this: we believe there is a lot to be learned by systematically and exhaustively testing a configurable system. In this case study, we report on the first ever endeavour to test all possible configurations of the industry-strength, open source configurable software system JHipster, a popular code generator for web applications. We built a testing scaffold for the 26,000+ configurations of JHipster using a cluster of 80 machines during 4 nights for a total of 4,376 hours (182 days) CPU time. We find that 35.70% configurations fail and we identify the feature interactions that cause the errors. We show that sampling strategies (like dissimilarity and 2-wise):
(1) are more effective to find faults than the 12 default configurations used in the JHipster continuous integration;
(2) can be too costly and exceed the available testing budget. We cross this quantitative analysis with the qualitative assessment of JHipster’s lead developers.
Read the full article on Springer website
Feb 27 2019
Five Machine Learning Usages in Software Testing
According to the Reqtest team, machine learning is a hot trend this year, bringing revolutionary changes in workflows and processes.
In software testing, machine learning can be used for:
- Test suite optimization, to identify redundant and unique test cases.
- Predictive analytics, to predict the key parameters of software testing processes on the basis of historical data.
- Log analytics, to identify the tests cases which need to be executed automatically.
- Traceability, extracting keywords from the Requirements Traceability Matrix (RTM) to achieve test coverage.
- Defect analytics, to identify high-risk areas of the application for the prioritization of regression test cases.
Read nine more recent testing trends from the Reqtest editors.
Feb 25 2019
Maven Central Top Libraries
java.lang.NullPointerException at com.xpn.xwiki.web.XWikiServletURLFactory.findAttachmentForDocRevision(XWikiServletURLFactory.java:904) at com.xpn.xwiki.web.XWikiServletURLFactory.createAttachmentURL(XWikiServletURLFactory.java:672) at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5578) at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5589) at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5626) at com.xpn.xwiki.doc.DefaultDocumentAccessBridge.getAttachmentURL(DefaultDocumentAccessBridge.java:799) at org.xwiki.rendering.internal.wiki.XWikiWikiModel.getLinkURL(XWikiWikiModel.java:155) at org.xwiki.rendering.internal.wiki.XWikiWikiModel.getImageURL(XWikiWikiModel.java:185) at org.xwiki.rendering.internal.renderer.xhtml.image.AttachmentXHTMLImageTypeRenderer.getImageSrcAttributeValue(AttachmentXHTMLImageTypeRenderer.java:75) at org.xwiki.rendering.internal.renderer.xhtml.image.AbstractXHTMLImageTypeRenderer.onImage(AbstractXHTMLImageTypeRenderer.java:106) at org.xwiki.rendering.internal.renderer.xhtml.image.DefaultXHTMLImageRenderer.onImage(DefaultXHTMLImageRenderer.java:82) at org.xwiki.rendering.internal.renderer.xhtml.XHTMLChainingRenderer.onImage(XHTMLChainingRenderer.java:599) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.listener.chaining.EmptyBlockChainingListener.onImage(EmptyBlockChainingListener.java:457) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.listener.chaining.BlockStateChainingListener.onImage(BlockStateChainingListener.java:877) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.block.ImageBlock.traverse(ImageBlock.java:143) at org.xwiki.rendering.block.AbstractBlock.traverse(AbstractBlock.java:593) at org.xwiki.rendering.block.AbstractBlock.traverse(AbstractBlock.java:593) at org.xwiki.rendering.internal.renderer.AbstractBlockRenderer.render(AbstractBlockRenderer.java:63) at org.xwiki.rendering.internal.renderer.AbstractBlockRenderer.render(AbstractBlockRenderer.java:55) at com.xpn.xwiki.doc.XWikiDocument.renderXDOM(XWikiDocument.java:9100) at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1369) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1691) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1600) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1554) at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:859) at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:832) at jdk.internal.reflect.GeneratedMethodAccessor877.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.Foreach.renderBlock(Foreach.java:309) at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:279) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.Foreach.renderBlock(Foreach.java:309) at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:279) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:173) at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:177) at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:60) at org.xwiki.rendering.macro.script.AbstractScriptMacro.evaluateBlock(AbstractScriptMacro.java:279) at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:182) at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:58) at org.xwiki.rendering.internal.transformation.macro.MacroTransformation.transform(MacroTransformation.java:311) at org.xwiki.rendering.internal.transformation.DefaultRenderingContext.transformInContext(DefaultRenderingContext.java:183) at org.xwiki.rendering.internal.transformation.DefaultTransformationManager.performTransformations(DefaultTransformationManager.java:88) at org.xwiki.display.internal.DocumentContentAsyncExecutor.executeInCurrentExecutionContext(DocumentContentAsyncExecutor.java:395) at org.xwiki.display.internal.DocumentContentAsyncExecutor.execute(DocumentContentAsyncExecutor.java:268) at org.xwiki.display.internal.DocumentContentAsyncRenderer.execute(DocumentContentAsyncRenderer.java:112) at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:157) at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:290) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.execute(DefaultBlockAsyncRendererExecutor.java:125) at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:67) at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:43) at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:96) at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:39) at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:123) at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:52) at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:68) at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:42) at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1366) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1503) at com.xpn.xwiki.doc.XWikiDocument.displayDocument(XWikiDocument.java:1452) at com.xpn.xwiki.doc.XWikiDocument.displayDocument(XWikiDocument.java:1421) at com.xpn.xwiki.api.Document.displayDocument(Document.java:787) at jdk.internal.reflect.GeneratedMethodAccessor553.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:704) at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:75) at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:242) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:190) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.xwiki.velocity.internal.directive.TryCatchDirective.render(TryCatchDirective.java:86) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284) at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:853) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:808) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:800) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73) at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54) at jdk.internal.reflect.GeneratedMethodAccessor285.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284) at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:853) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:808) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:800) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73) at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54) at jdk.internal.reflect.GeneratedMethodAccessor285.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:190) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284) at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:846) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:832) at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:91) at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:85) at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2565) at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:180) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:651) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:339) at com.xpn.xwiki.web.LegacyActionServlet.service(LegacyActionServlet.java:108) at javax.servlet.http.HttpServlet.service(HttpServlet.java:733) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:122) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.wysiwyg.filter.ConversionFilter.doFilter(ConversionFilter.java:61) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:132) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176) at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145) at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:710) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:457) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:384) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312) at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:213) at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:171) at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145) at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:764) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:354) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:888) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1684) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.base/java.lang.Thread.run(Thread.java:829)
Analysing the Maven Central Repository during the second half of 2018, a group of scientific researchers led by Benoit Baudry, Professor in Software Technology at the KTH Royal Institute of Technology, reveals that Maven Central contains more than 2.5 million artifacts, a real treasure of extraordinary software development. More than 17% of the libraries have several versions that are actively used by a large number of clients.
However, 1.3 million dependencies declared are actually not used. Also, a vast majority of APIs can be reduced to a small, compact core and still serve most of their clients.
For a more accurate exploration of the Maven Central ecosystem, read Benoit Baudry's article posted on Medium.com:
A journey at the heart of 2.4 million Maven artifacts.
Feb 11 2019
Global vs Local Coverage
java.lang.NullPointerException at com.xpn.xwiki.web.XWikiServletURLFactory.findAttachmentForDocRevision(XWikiServletURLFactory.java:904) at com.xpn.xwiki.web.XWikiServletURLFactory.createAttachmentURL(XWikiServletURLFactory.java:672) at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5578) at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5589) at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5626) at com.xpn.xwiki.doc.DefaultDocumentAccessBridge.getAttachmentURL(DefaultDocumentAccessBridge.java:799) at org.xwiki.rendering.internal.wiki.XWikiWikiModel.getLinkURL(XWikiWikiModel.java:155) at org.xwiki.rendering.internal.wiki.XWikiWikiModel.getImageURL(XWikiWikiModel.java:185) at org.xwiki.rendering.internal.renderer.xhtml.image.AttachmentXHTMLImageTypeRenderer.getImageSrcAttributeValue(AttachmentXHTMLImageTypeRenderer.java:75) at org.xwiki.rendering.internal.renderer.xhtml.image.AbstractXHTMLImageTypeRenderer.onImage(AbstractXHTMLImageTypeRenderer.java:106) at org.xwiki.rendering.internal.renderer.xhtml.image.DefaultXHTMLImageRenderer.onImage(DefaultXHTMLImageRenderer.java:82) at org.xwiki.rendering.internal.renderer.xhtml.XHTMLChainingRenderer.onImage(XHTMLChainingRenderer.java:599) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.listener.chaining.EmptyBlockChainingListener.onImage(EmptyBlockChainingListener.java:457) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.listener.chaining.BlockStateChainingListener.onImage(BlockStateChainingListener.java:877) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.block.ImageBlock.traverse(ImageBlock.java:143) at org.xwiki.rendering.block.AbstractBlock.traverse(AbstractBlock.java:593) at org.xwiki.rendering.block.AbstractBlock.traverse(AbstractBlock.java:593) at org.xwiki.rendering.internal.renderer.AbstractBlockRenderer.render(AbstractBlockRenderer.java:63) at org.xwiki.rendering.internal.renderer.AbstractBlockRenderer.render(AbstractBlockRenderer.java:55) at com.xpn.xwiki.doc.XWikiDocument.renderXDOM(XWikiDocument.java:9100) at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1369) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1691) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1600) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1554) at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:859) at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:832) at jdk.internal.reflect.GeneratedMethodAccessor877.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.Foreach.renderBlock(Foreach.java:309) at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:279) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.Foreach.renderBlock(Foreach.java:309) at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:279) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:173) at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:177) at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:60) at org.xwiki.rendering.macro.script.AbstractScriptMacro.evaluateBlock(AbstractScriptMacro.java:279) at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:182) at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:58) at org.xwiki.rendering.internal.transformation.macro.MacroTransformation.transform(MacroTransformation.java:311) at org.xwiki.rendering.internal.transformation.DefaultRenderingContext.transformInContext(DefaultRenderingContext.java:183) at org.xwiki.rendering.internal.transformation.DefaultTransformationManager.performTransformations(DefaultTransformationManager.java:88) at org.xwiki.display.internal.DocumentContentAsyncExecutor.executeInCurrentExecutionContext(DocumentContentAsyncExecutor.java:395) at org.xwiki.display.internal.DocumentContentAsyncExecutor.execute(DocumentContentAsyncExecutor.java:268) at org.xwiki.display.internal.DocumentContentAsyncRenderer.execute(DocumentContentAsyncRenderer.java:112) at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:157) at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:290) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.execute(DefaultBlockAsyncRendererExecutor.java:125) at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:67) at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:43) at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:96) at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:39) at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:123) at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:52) at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:68) at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:42) at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1366) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1503) at com.xpn.xwiki.doc.XWikiDocument.displayDocument(XWikiDocument.java:1452) at com.xpn.xwiki.doc.XWikiDocument.displayDocument(XWikiDocument.java:1421) at com.xpn.xwiki.api.Document.displayDocument(Document.java:787) at jdk.internal.reflect.GeneratedMethodAccessor553.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:704) at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:75) at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:242) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:190) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.xwiki.velocity.internal.directive.TryCatchDirective.render(TryCatchDirective.java:86) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284) at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:853) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:808) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:800) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73) at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54) at jdk.internal.reflect.GeneratedMethodAccessor285.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284) at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:853) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:808) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:800) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73) at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54) at jdk.internal.reflect.GeneratedMethodAccessor285.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:190) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284) at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:846) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:832) at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:91) at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:85) at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2565) at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:180) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:651) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:339) at com.xpn.xwiki.web.LegacyActionServlet.service(LegacyActionServlet.java:108) at javax.servlet.http.HttpServlet.service(HttpServlet.java:733) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:122) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.wysiwyg.filter.ConversionFilter.doFilter(ConversionFilter.java:61) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:132) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176) at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145) at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:710) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:457) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:384) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312) at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:213) at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:171) at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145) at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:764) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:354) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:888) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1684) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.base/java.lang.Thread.run(Thread.java:829)
On the XWiki project, we've been pursuing a strategy of failing our Maven build automatically whenever the test coverage of each Maven module is below a threshold indicated in the pom.xml of that module. We're using Jacoco to measure this local coverage.
We've been doing this for over 6 years now and we've been generally happy about it. This has allowed us to raise the global test coverage of XWiki by a few percent every year.
More recently, I joined the STAMP European Research Project and one our KPIs is the global coverage, so I got curious and wanted to look at precisely how much we're winning every year.
I realized that, even though we've been generally increasing our global coverage (computed using Clover), there are times when we actually reduce it or increase very little, even though at the local level all modules increase their local coverage...
Dec 21 2018
Short circuiting method executions to assess test quality
Today, a Medium article by Benoit Baudry, Professor in Software Technology at KTH and STAMP project coordinator, shares interesting results about Descartes mutation testing tool. This software can automatically short-circuit covered methods and determine a list of pseudo-tested methods in Java projects. Experimenting Descartes over 21 open source Java projects, a total of 28K+ methods could be analyzed, with three main results:
- short circuiting the complete execution of methods provides valuable feedback to developers. The developers have clear goal to write a test: to make this method not pseudo-tested anymore. Developers are more comfortable reasoning at the granularity of a method than at the statement level (fine grained traditional mutation testing).
- short circuiting methods has revealed the presence of pseudo-tested methods in all the projects that we have analyzed, even the ones with very high code coverage. Development teams of all Java projects can benefit from this type of analysis to assess their test suites and improve them.
- interviews with developers reveal that some pseudo-tested methods actually reveal major weaknesses in the test suite. We have collected empirical evidence of test suites fixed after running a short-circuiting experiment.
- For more details, read Descartes article by Benoit Baudry on Medium
Dec 17 2018
The ElasTest testing platform targets large distributed systems
java.lang.NullPointerException at com.xpn.xwiki.web.XWikiServletURLFactory.findAttachmentForDocRevision(XWikiServletURLFactory.java:904) at com.xpn.xwiki.web.XWikiServletURLFactory.createAttachmentURL(XWikiServletURLFactory.java:672) at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5578) at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5589) at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5626) at com.xpn.xwiki.doc.DefaultDocumentAccessBridge.getAttachmentURL(DefaultDocumentAccessBridge.java:799) at org.xwiki.rendering.internal.wiki.XWikiWikiModel.getLinkURL(XWikiWikiModel.java:155) at org.xwiki.rendering.internal.wiki.XWikiWikiModel.getImageURL(XWikiWikiModel.java:185) at org.xwiki.rendering.internal.renderer.xhtml.image.AttachmentXHTMLImageTypeRenderer.getImageSrcAttributeValue(AttachmentXHTMLImageTypeRenderer.java:75) at org.xwiki.rendering.internal.renderer.xhtml.image.AbstractXHTMLImageTypeRenderer.onImage(AbstractXHTMLImageTypeRenderer.java:106) at org.xwiki.rendering.internal.renderer.xhtml.image.DefaultXHTMLImageRenderer.onImage(DefaultXHTMLImageRenderer.java:82) at org.xwiki.rendering.internal.renderer.xhtml.XHTMLChainingRenderer.onImage(XHTMLChainingRenderer.java:599) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.listener.chaining.EmptyBlockChainingListener.onImage(EmptyBlockChainingListener.java:457) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.listener.chaining.BlockStateChainingListener.onImage(BlockStateChainingListener.java:877) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.block.ImageBlock.traverse(ImageBlock.java:143) at org.xwiki.rendering.block.AbstractBlock.traverse(AbstractBlock.java:593) at org.xwiki.rendering.block.AbstractBlock.traverse(AbstractBlock.java:593) at org.xwiki.rendering.internal.renderer.AbstractBlockRenderer.render(AbstractBlockRenderer.java:63) at org.xwiki.rendering.internal.renderer.AbstractBlockRenderer.render(AbstractBlockRenderer.java:55) at com.xpn.xwiki.doc.XWikiDocument.renderXDOM(XWikiDocument.java:9100) at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1369) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1691) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1600) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1554) at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:859) at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:832) at jdk.internal.reflect.GeneratedMethodAccessor877.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.Foreach.renderBlock(Foreach.java:309) at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:279) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.Foreach.renderBlock(Foreach.java:309) at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:279) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:173) at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:177) at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:60) at org.xwiki.rendering.macro.script.AbstractScriptMacro.evaluateBlock(AbstractScriptMacro.java:279) at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:182) at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:58) at org.xwiki.rendering.internal.transformation.macro.MacroTransformation.transform(MacroTransformation.java:311) at org.xwiki.rendering.internal.transformation.DefaultRenderingContext.transformInContext(DefaultRenderingContext.java:183) at org.xwiki.rendering.internal.transformation.DefaultTransformationManager.performTransformations(DefaultTransformationManager.java:88) at org.xwiki.display.internal.DocumentContentAsyncExecutor.executeInCurrentExecutionContext(DocumentContentAsyncExecutor.java:395) at org.xwiki.display.internal.DocumentContentAsyncExecutor.execute(DocumentContentAsyncExecutor.java:268) at org.xwiki.display.internal.DocumentContentAsyncRenderer.execute(DocumentContentAsyncRenderer.java:112) at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:157) at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:290) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.execute(DefaultBlockAsyncRendererExecutor.java:125) at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:67) at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:43) at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:96) at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:39) at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:123) at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:52) at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:68) at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:42) at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1366) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1503) at com.xpn.xwiki.doc.XWikiDocument.displayDocument(XWikiDocument.java:1452) at com.xpn.xwiki.doc.XWikiDocument.displayDocument(XWikiDocument.java:1421) at com.xpn.xwiki.api.Document.displayDocument(Document.java:787) at jdk.internal.reflect.GeneratedMethodAccessor553.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:704) at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:75) at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:242) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:190) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.xwiki.velocity.internal.directive.TryCatchDirective.render(TryCatchDirective.java:86) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284) at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:853) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:808) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:800) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73) at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54) at jdk.internal.reflect.GeneratedMethodAccessor285.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284) at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:853) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:808) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:800) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73) at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54) at jdk.internal.reflect.GeneratedMethodAccessor285.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:190) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284) at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:846) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:832) at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:91) at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:85) at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2565) at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:180) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:651) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:339) at com.xpn.xwiki.web.LegacyActionServlet.service(LegacyActionServlet.java:108) at javax.servlet.http.HttpServlet.service(HttpServlet.java:733) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:122) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.wysiwyg.filter.ConversionFilter.doFilter(ConversionFilter.java:61) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:132) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176) at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145) at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:710) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:457) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:384) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312) at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:213) at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:171) at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145) at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:764) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:354) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:888) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1684) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.base/java.lang.Thread.run(Thread.java:829)
A recent Elastest white paper raises issues of concern such as System Under Test deployments, IoT testing services and root cause analysis. The H2020 Elastest project is a STAMP related project. We are currently exploring integration opportunities between our tools.
With four demonstrators covering different application domains such as 5G networks, web applications, WebRTC, and IoT, the ElasTest platform is designed to improve the efficiency and effectiveness of the testing process, and ultimately to improve the quality of large software systems deployed in the Cloud. Testers and developers of large distributed systems will learn more about the Elastest platform architecture and benefits in the Elastest white paper.
Dec 07 2018
Commit Assistant: the Ubisoft bug detection bot
java.lang.NullPointerException at com.xpn.xwiki.web.XWikiServletURLFactory.findAttachmentForDocRevision(XWikiServletURLFactory.java:904) at com.xpn.xwiki.web.XWikiServletURLFactory.createAttachmentURL(XWikiServletURLFactory.java:672) at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5578) at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5589) at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5626) at com.xpn.xwiki.doc.DefaultDocumentAccessBridge.getAttachmentURL(DefaultDocumentAccessBridge.java:799) at org.xwiki.rendering.internal.wiki.XWikiWikiModel.getLinkURL(XWikiWikiModel.java:155) at org.xwiki.rendering.internal.wiki.XWikiWikiModel.getImageURL(XWikiWikiModel.java:185) at org.xwiki.rendering.internal.renderer.xhtml.image.AttachmentXHTMLImageTypeRenderer.getImageSrcAttributeValue(AttachmentXHTMLImageTypeRenderer.java:75) at org.xwiki.rendering.internal.renderer.xhtml.image.AbstractXHTMLImageTypeRenderer.onImage(AbstractXHTMLImageTypeRenderer.java:106) at org.xwiki.rendering.internal.renderer.xhtml.image.DefaultXHTMLImageRenderer.onImage(DefaultXHTMLImageRenderer.java:82) at org.xwiki.rendering.internal.renderer.xhtml.XHTMLChainingRenderer.onImage(XHTMLChainingRenderer.java:599) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.listener.chaining.EmptyBlockChainingListener.onImage(EmptyBlockChainingListener.java:457) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.listener.chaining.BlockStateChainingListener.onImage(BlockStateChainingListener.java:877) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.block.ImageBlock.traverse(ImageBlock.java:143) at org.xwiki.rendering.block.AbstractBlock.traverse(AbstractBlock.java:593) at org.xwiki.rendering.block.AbstractBlock.traverse(AbstractBlock.java:593) at org.xwiki.rendering.internal.renderer.AbstractBlockRenderer.render(AbstractBlockRenderer.java:63) at org.xwiki.rendering.internal.renderer.AbstractBlockRenderer.render(AbstractBlockRenderer.java:55) at com.xpn.xwiki.doc.XWikiDocument.renderXDOM(XWikiDocument.java:9100) at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1369) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1691) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1600) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1554) at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:859) at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:832) at jdk.internal.reflect.GeneratedMethodAccessor877.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.Foreach.renderBlock(Foreach.java:309) at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:279) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.Foreach.renderBlock(Foreach.java:309) at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:279) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:173) at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:177) at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:60) at org.xwiki.rendering.macro.script.AbstractScriptMacro.evaluateBlock(AbstractScriptMacro.java:279) at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:182) at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:58) at org.xwiki.rendering.internal.transformation.macro.MacroTransformation.transform(MacroTransformation.java:311) at org.xwiki.rendering.internal.transformation.DefaultRenderingContext.transformInContext(DefaultRenderingContext.java:183) at org.xwiki.rendering.internal.transformation.DefaultTransformationManager.performTransformations(DefaultTransformationManager.java:88) at org.xwiki.display.internal.DocumentContentAsyncExecutor.executeInCurrentExecutionContext(DocumentContentAsyncExecutor.java:395) at org.xwiki.display.internal.DocumentContentAsyncExecutor.execute(DocumentContentAsyncExecutor.java:268) at org.xwiki.display.internal.DocumentContentAsyncRenderer.execute(DocumentContentAsyncRenderer.java:112) at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:157) at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:290) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.execute(DefaultBlockAsyncRendererExecutor.java:125) at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:67) at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:43) at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:96) at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:39) at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:123) at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:52) at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:68) at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:42) at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1366) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1503) at com.xpn.xwiki.doc.XWikiDocument.displayDocument(XWikiDocument.java:1452) at com.xpn.xwiki.doc.XWikiDocument.displayDocument(XWikiDocument.java:1421) at com.xpn.xwiki.api.Document.displayDocument(Document.java:787) at jdk.internal.reflect.GeneratedMethodAccessor553.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:704) at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:75) at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:242) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:190) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.xwiki.velocity.internal.directive.TryCatchDirective.render(TryCatchDirective.java:86) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284) at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:853) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:808) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:800) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73) at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54) at jdk.internal.reflect.GeneratedMethodAccessor285.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284) at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:853) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:808) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:800) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73) at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54) at jdk.internal.reflect.GeneratedMethodAccessor285.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:190) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284) at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:846) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:832) at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:91) at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:85) at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2565) at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:180) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:651) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:339) at com.xpn.xwiki.web.LegacyActionServlet.service(LegacyActionServlet.java:108) at javax.servlet.http.HttpServlet.service(HttpServlet.java:733) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:122) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.wysiwyg.filter.ConversionFilter.doFilter(ConversionFilter.java:61) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:132) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176) at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145) at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:710) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:457) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:384) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312) at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:213) at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:171) at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145) at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:764) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:354) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:888) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1684) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.base/java.lang.Thread.run(Thread.java:829)
What if a development bot could help you detect software bugs automatically, then provide probable causes for each issue along with fixes suggestions? Identifying patterns in past bugs to better intercept new bugs might save significant debugging time and cost to software development teams.
At Ubisoft La Forge Research Lab in Montreal, Technical Architect Mathieu Nayrolles collaborates on such a learning bot with Concordia University expert Abdelwahab Hamou-Lhadj at the Electrical and Computer Engineering Department. Using the innovative CLEVER approach, they can detect commits that are likely to introduce bugs, with an average of 79.10% precision and a 65.61% recall.
CLEVER combines code metrics, clone detection techniques, and project dependency analysis to detect risky commits within and across projects. CLEVER operates at commit-time, before the commits reach the central code repository. Also, because it relies on code comparison, CLEVER does not only detect risky commits but also makes recommendations to developers on how to fix them.
You can find more details on the risky commit detector online:
- Mathieu Nayrolles and Abdelwahab Hamou-Lhadj ICSE/Mining Software Repositories 2018 article: "CLEVER: Combining Code Metrics with Clone Detection for Just-In-Time Fault Prevention and Resolution in Large Industrial Projects"
- Ubisoft Commit Assistant article and video
Nov 16 2018
DSpot Study on Ten Mature Open Source Projects
Improving existing Java test cases and give the improvements back to developers as patches or pull requests. Indeed, the idea is attractive. But is it yet an efficient and proven code optimisation process?
A scientific paper from Benjamin Danglot (Inria), co-signed with three more STAMP project contributors, tickles us to think so.
The PhD candidate provides a thorough study on ten notable and mature open source projects where all test methods from 40 unit test classes have been amplified by DSpot. This proves the STAMP tool ability to strengthen real unit test classes in Java.
More test automation will be offered in the future, requiring more understanding and comparison of test purposes. Moreover, DSpot can be placed in a continuous integration service (CI) where test classes would be amplified on-the-fly. This would greatly improve the industrial applicability of this software engineering research, conclude the authors.
- Title: Automatic Test Improvement with DSpot: a Study with Ten Mature Open-Source Projects
- Authors: Benjamin Danglot, Oscar Luis Vera-Pérez, Benoit Baudry, Martin Monperrus.
- Academic publication: Empirical Software Engineering, Springer Verlag, In press, pp.1-35. <hal-01923575>
Nov 13 2018
How software code perturbation can strengthen its reliability?
A recent IEEE blog article, by a group of researchers involved in the STAMP project reveals that, facing state perturbations, software might be more stable and reliable than expected.
java.lang.NullPointerException at com.xpn.xwiki.web.XWikiServletURLFactory.findAttachmentForDocRevision(XWikiServletURLFactory.java:904) at com.xpn.xwiki.web.XWikiServletURLFactory.createAttachmentURL(XWikiServletURLFactory.java:672) at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5578) at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5589) at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5626) at com.xpn.xwiki.doc.DefaultDocumentAccessBridge.getAttachmentURL(DefaultDocumentAccessBridge.java:799) at org.xwiki.rendering.internal.wiki.XWikiWikiModel.getLinkURL(XWikiWikiModel.java:155) at org.xwiki.rendering.internal.wiki.XWikiWikiModel.getImageURL(XWikiWikiModel.java:185) at org.xwiki.rendering.internal.renderer.xhtml.image.AttachmentXHTMLImageTypeRenderer.getImageSrcAttributeValue(AttachmentXHTMLImageTypeRenderer.java:75) at org.xwiki.rendering.internal.renderer.xhtml.image.AbstractXHTMLImageTypeRenderer.onImage(AbstractXHTMLImageTypeRenderer.java:106) at org.xwiki.rendering.internal.renderer.xhtml.image.DefaultXHTMLImageRenderer.onImage(DefaultXHTMLImageRenderer.java:82) at org.xwiki.rendering.internal.renderer.xhtml.XHTMLChainingRenderer.onImage(XHTMLChainingRenderer.java:599) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.listener.chaining.EmptyBlockChainingListener.onImage(EmptyBlockChainingListener.java:457) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.listener.chaining.BlockStateChainingListener.onImage(BlockStateChainingListener.java:877) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.block.ImageBlock.traverse(ImageBlock.java:143) at org.xwiki.rendering.block.AbstractBlock.traverse(AbstractBlock.java:593) at org.xwiki.rendering.block.AbstractBlock.traverse(AbstractBlock.java:593) at org.xwiki.rendering.internal.renderer.AbstractBlockRenderer.render(AbstractBlockRenderer.java:63) at org.xwiki.rendering.internal.renderer.AbstractBlockRenderer.render(AbstractBlockRenderer.java:55) at com.xpn.xwiki.doc.XWikiDocument.renderXDOM(XWikiDocument.java:9100) at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1369) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1691) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1600) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1554) at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:859) at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:832) at jdk.internal.reflect.GeneratedMethodAccessor877.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.Foreach.renderBlock(Foreach.java:309) at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:279) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.Foreach.renderBlock(Foreach.java:309) at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:279) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:173) at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:177) at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:60) at org.xwiki.rendering.macro.script.AbstractScriptMacro.evaluateBlock(AbstractScriptMacro.java:279) at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:182) at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:58) at org.xwiki.rendering.internal.transformation.macro.MacroTransformation.transform(MacroTransformation.java:311) at org.xwiki.rendering.internal.transformation.DefaultRenderingContext.transformInContext(DefaultRenderingContext.java:183) at org.xwiki.rendering.internal.transformation.DefaultTransformationManager.performTransformations(DefaultTransformationManager.java:88) at org.xwiki.display.internal.DocumentContentAsyncExecutor.executeInCurrentExecutionContext(DocumentContentAsyncExecutor.java:395) at org.xwiki.display.internal.DocumentContentAsyncExecutor.execute(DocumentContentAsyncExecutor.java:268) at org.xwiki.display.internal.DocumentContentAsyncRenderer.execute(DocumentContentAsyncRenderer.java:112) at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:157) at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:290) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.execute(DefaultBlockAsyncRendererExecutor.java:125) at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:67) at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:43) at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:96) at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:39) at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:123) at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:52) at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:68) at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:42) at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1366) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1503) at com.xpn.xwiki.doc.XWikiDocument.displayDocument(XWikiDocument.java:1452) at com.xpn.xwiki.doc.XWikiDocument.displayDocument(XWikiDocument.java:1421) at com.xpn.xwiki.api.Document.displayDocument(Document.java:787) at jdk.internal.reflect.GeneratedMethodAccessor553.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:704) at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:75) at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:242) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:190) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.xwiki.velocity.internal.directive.TryCatchDirective.render(TryCatchDirective.java:86) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284) at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:853) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:808) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:800) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73) at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54) at jdk.internal.reflect.GeneratedMethodAccessor285.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284) at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:853) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:808) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:800) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73) at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54) at jdk.internal.reflect.GeneratedMethodAccessor285.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:190) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284) at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:846) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:832) at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:91) at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:85) at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2565) at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:180) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:651) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:339) at com.xpn.xwiki.web.LegacyActionServlet.service(LegacyActionServlet.java:108) at javax.servlet.http.HttpServlet.service(HttpServlet.java:733) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:122) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.wysiwyg.filter.ConversionFilter.doFilter(ConversionFilter.java:61) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:132) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176) at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145) at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:710) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:457) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:384) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312) at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:213) at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:171) at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145) at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:764) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:354) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:888) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1684) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.base/java.lang.Thread.run(Thread.java:829)
This fascinating phenomenon is called "Correctness Attraction" in reference to the concepts of “stable equilibrium” and “attraction basin” in physics. It underlines input points for which a software system eventually reaches the same fixed and correct point according to a perturbation model.
Moreover, this could lead to new “bug absorbing zones” in software applications where software engineering techniques would improve the correctness attraction.
Discover the reasons behind correctness attraction in this blog post:
Nov 06 2018
Luc Esape, artificial software fixer, unmasked by The Register
Luc Esape, aka Repairnator, is unmasked! The Java software fixer recently earned a world class reputation as a smart bot, thanks to an article posted on The Register by Thomas Claburn, a real editor based in San Francisco (California).
The Register article is entitled: The mysterious life of Luc Esape, bug fixer extraordinaire. His big secret? He's not human
For the INRIA researchers at University of Lille within the Spirals team, this international recognition underlines the open source software ability to fix bugs through automatically generated patches, provided within minutes during the continuous integration and continuous delivery.
A quote from KTH Professor Martin Monperrus, Repairnator and STAMP contributor, confirms the bot track records. In a few weeks, Repairnator has produced five patches that have been accepted by human developers and merged into their respective code bases: "This is a milestone for human-competitiveness in software engineering research on automatic program repair", he explains.
The online article along with multiple comments also raise unsolved questions about patch legal responsibility and future DevOps careers.
- Read Thomas Claburn article in The Register: https://www.theregister.co.uk/2018/10/17/luc_esape_bug_fixer/
- Read Martin Monperrus blog post about Repairnator: https://medium.com/@martin.monperrus/human-competitive-patches-in-automatic-program-repair-with-repairnator-359042e00f6a
Sep 20 2018
Mutation testing is a serious game
java.lang.NullPointerException at com.xpn.xwiki.web.XWikiServletURLFactory.findAttachmentForDocRevision(XWikiServletURLFactory.java:904) at com.xpn.xwiki.web.XWikiServletURLFactory.createAttachmentURL(XWikiServletURLFactory.java:672) at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5578) at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5589) at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5626) at com.xpn.xwiki.doc.DefaultDocumentAccessBridge.getAttachmentURL(DefaultDocumentAccessBridge.java:799) at org.xwiki.rendering.internal.wiki.XWikiWikiModel.getLinkURL(XWikiWikiModel.java:155) at org.xwiki.rendering.internal.wiki.XWikiWikiModel.getImageURL(XWikiWikiModel.java:185) at org.xwiki.rendering.internal.renderer.xhtml.image.AttachmentXHTMLImageTypeRenderer.getImageSrcAttributeValue(AttachmentXHTMLImageTypeRenderer.java:75) at org.xwiki.rendering.internal.renderer.xhtml.image.AbstractXHTMLImageTypeRenderer.onImage(AbstractXHTMLImageTypeRenderer.java:106) at org.xwiki.rendering.internal.renderer.xhtml.image.DefaultXHTMLImageRenderer.onImage(DefaultXHTMLImageRenderer.java:82) at org.xwiki.rendering.internal.renderer.xhtml.XHTMLChainingRenderer.onImage(XHTMLChainingRenderer.java:599) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.listener.chaining.EmptyBlockChainingListener.onImage(EmptyBlockChainingListener.java:457) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.listener.chaining.BlockStateChainingListener.onImage(BlockStateChainingListener.java:877) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.block.ImageBlock.traverse(ImageBlock.java:143) at org.xwiki.rendering.block.AbstractBlock.traverse(AbstractBlock.java:593) at org.xwiki.rendering.block.AbstractBlock.traverse(AbstractBlock.java:593) at org.xwiki.rendering.internal.renderer.AbstractBlockRenderer.render(AbstractBlockRenderer.java:63) at org.xwiki.rendering.internal.renderer.AbstractBlockRenderer.render(AbstractBlockRenderer.java:55) at com.xpn.xwiki.doc.XWikiDocument.renderXDOM(XWikiDocument.java:9100) at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1369) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1691) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1600) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1554) at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:859) at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:832) at jdk.internal.reflect.GeneratedMethodAccessor877.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.Foreach.renderBlock(Foreach.java:309) at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:279) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.Foreach.renderBlock(Foreach.java:309) at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:279) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:173) at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:177) at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:60) at org.xwiki.rendering.macro.script.AbstractScriptMacro.evaluateBlock(AbstractScriptMacro.java:279) at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:182) at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:58) at org.xwiki.rendering.internal.transformation.macro.MacroTransformation.transform(MacroTransformation.java:311) at org.xwiki.rendering.internal.transformation.DefaultRenderingContext.transformInContext(DefaultRenderingContext.java:183) at org.xwiki.rendering.internal.transformation.DefaultTransformationManager.performTransformations(DefaultTransformationManager.java:88) at org.xwiki.display.internal.DocumentContentAsyncExecutor.executeInCurrentExecutionContext(DocumentContentAsyncExecutor.java:395) at org.xwiki.display.internal.DocumentContentAsyncExecutor.execute(DocumentContentAsyncExecutor.java:268) at org.xwiki.display.internal.DocumentContentAsyncRenderer.execute(DocumentContentAsyncRenderer.java:112) at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:157) at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:290) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.execute(DefaultBlockAsyncRendererExecutor.java:125) at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:67) at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:43) at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:96) at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:39) at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:123) at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:52) at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:68) at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:42) at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1366) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1503) at com.xpn.xwiki.doc.XWikiDocument.displayDocument(XWikiDocument.java:1452) at com.xpn.xwiki.doc.XWikiDocument.displayDocument(XWikiDocument.java:1421) at com.xpn.xwiki.api.Document.displayDocument(Document.java:787) at jdk.internal.reflect.GeneratedMethodAccessor553.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:704) at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:75) at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:242) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:190) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.xwiki.velocity.internal.directive.TryCatchDirective.render(TryCatchDirective.java:86) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284) at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:853) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:808) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:800) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73) at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54) at jdk.internal.reflect.GeneratedMethodAccessor285.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284) at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:853) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:808) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:800) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73) at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54) at jdk.internal.reflect.GeneratedMethodAccessor285.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:190) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284) at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:846) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:832) at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:91) at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:85) at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2565) at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:180) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:651) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:339) at com.xpn.xwiki.web.LegacyActionServlet.service(LegacyActionServlet.java:108) at javax.servlet.http.HttpServlet.service(HttpServlet.java:733) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:122) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.wysiwyg.filter.ConversionFilter.doFilter(ConversionFilter.java:61) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:132) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176) at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145) at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:710) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:457) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:384) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312) at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:213) at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:171) at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145) at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:764) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:354) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:888) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1684) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.base/java.lang.Thread.run(Thread.java:829)
Thanks to this tweet from Arie Van Deursen, Head of Software Technical Department at TU DELFT and STAMP project partner, we are glad to share with you this online resource where you can learn about mutation testing through a serious game.
Pick your side carefully between attackers who are mutating the software code, and defenders who are adding new tests. And let us know about your gamification experience...
More on code-defenders.org
Sep 19 2018
Repairnator to repair software bugs on a large scale
Repairnator is an innovative bot to repair software bugs on a large scale, and an open source solution available to all developers now with a STAMP connection!
This development comes from the Spirals team, a joint team between Inria and the University of Lille within UMR 9189, CNRS-Centrale Lille-University of Lille, CRIStAL. ...
Sep 18 2018
Facebook SapFix and Sapienz to find and fix software bugs
Facebook engineers are investigating code automation using Artificial Intelligence in Sapienz and mutation-based fix in SapFix.
Both tools are designed to speed up the deployment of new software through distributed codes that are pre-tested and as stable as possible.
According to a recent article, they are intended for open source release in the future, once additional engineering work is completed, but no date is mentioned. ...
Sep 17 2018
Google Test Efficacy: running software at scale
Peter Spragins, Google Software Engineer and Teaching Assistant at UCSD Math Department, is summarizing almost four years of experience in running software tests at scale, with several colleagues in Mountain View (California).
"The two key numbers for the system's performance are sensitivity, the percentage of failing tests we actually execute, and specificity, the percentage of passing tests we actually skip. The two numbers go hand in hand."
Discover how Machine Learning is now part of the Google process of committing code. Read his article about Efficacy Presubmit Service
Sep 12 2018
Inauguration of Castor Research Center
java.lang.NullPointerException
at com.xpn.xwiki.web.XWikiServletURLFactory.findAttachmentForDocRevision(XWikiServletURLFactory.java:904)
at com.xpn.xwiki.web.XWikiServletURLFactory.createAttachmentURL(XWikiServletURLFactory.java:672)
at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5578)
at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5589)
at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5626)
at com.xpn.xwiki.doc.DefaultDocumentAccessBridge.getAttachmentURL(DefaultDocumentAccessBridge.java:799)
at org.xwiki.rendering.internal.wiki.XWikiWikiModel.getLinkURL(XWikiWikiModel.java:155)
at org.xwiki.rendering.internal.wiki.XWikiWikiModel.getImageURL(XWikiWikiModel.java:185)
at org.xwiki.rendering.internal.renderer.xhtml.image.AttachmentXHTMLImageTypeRenderer.getImageSrcAttributeValue(AttachmentXHTMLImageTypeRenderer.java:75)
at org.xwiki.rendering.internal.renderer.xhtml.image.AbstractXHTMLImageTypeRenderer.onImage(AbstractXHTMLImageTypeRenderer.java:106)
at org.xwiki.rendering.internal.renderer.xhtml.image.DefaultXHTMLImageRenderer.onImage(DefaultXHTMLImageRenderer.java:82)
at org.xwiki.rendering.internal.renderer.xhtml.XHTMLChainingRenderer.onImage(XHTMLChainingRenderer.java:599)
at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607)
at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607)
at org.xwiki.rendering.listener.chaining.EmptyBlockChainingListener.onImage(EmptyBlockChainingListener.java:457)
at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607)
at org.xwiki.rendering.listener.chaining.BlockStateChainingListener.onImage(BlockStateChainingListener.java:877)
at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607)
at org.xwiki.rendering.block.ImageBlock.traverse(ImageBlock.java:143)
at org.xwiki.rendering.block.AbstractBlock.traverse(AbstractBlock.java:593)
at org.xwiki.rendering.block.AbstractBlock.traverse(AbstractBlock.java:593)
at org.xwiki.rendering.internal.renderer.AbstractBlockRenderer.render(AbstractBlockRenderer.java:63)
at org.xwiki.rendering.internal.renderer.AbstractBlockRenderer.render(AbstractBlockRenderer.java:55)
at com.xpn.xwiki.doc.XWikiDocument.renderXDOM(XWikiDocument.java:9100)
at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1369)
at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1691)
at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1600)
at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1554)
at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:859)
at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:832)
at jdk.internal.reflect.GeneratedMethodAccessor877.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554)
at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221)
at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368)
at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.directive.Foreach.renderBlock(Foreach.java:309)
at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:279)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.directive.Foreach.renderBlock(Foreach.java:309)
at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:279)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)
at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)
at org.apache.velocity.Template.merge(Template.java:358)
at org.apache.velocity.Template.merge(Template.java:262)
at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225)
at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:173)
at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:177)
at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:60)
at org.xwiki.rendering.macro.script.AbstractScriptMacro.evaluateBlock(AbstractScriptMacro.java:279)
at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:182)
at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:58)
at org.xwiki.rendering.internal.transformation.macro.MacroTransformation.transform(MacroTransformation.java:311)
at org.xwiki.rendering.internal.transformation.DefaultRenderingContext.transformInContext(DefaultRenderingContext.java:183)
at org.xwiki.rendering.internal.transformation.DefaultTransformationManager.performTransformations(DefaultTransformationManager.java:88)
at org.xwiki.display.internal.DocumentContentAsyncExecutor.executeInCurrentExecutionContext(DocumentContentAsyncExecutor.java:395)
at org.xwiki.display.internal.DocumentContentAsyncExecutor.execute(DocumentContentAsyncExecutor.java:268)
at org.xwiki.display.internal.DocumentContentAsyncRenderer.execute(DocumentContentAsyncRenderer.java:112)
at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:157)
at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:54)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:290)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267)
at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.execute(DefaultBlockAsyncRendererExecutor.java:125)
at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:67)
at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:43)
at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:96)
at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:39)
at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:123)
at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:52)
at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:68)
at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:42)
at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1366)
at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1503)
at com.xpn.xwiki.doc.XWikiDocument.displayDocument(XWikiDocument.java:1452)
at com.xpn.xwiki.doc.XWikiDocument.displayDocument(XWikiDocument.java:1421)
at com.xpn.xwiki.api.Document.displayDocument(Document.java:787)
at jdk.internal.reflect.GeneratedMethodAccessor553.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554)
at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221)
at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368)
at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:704)
at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:75)
at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:242)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)
at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:190)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.xwiki.velocity.internal.directive.TryCatchDirective.render(TryCatchDirective.java:86)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)
at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)
at org.apache.velocity.Template.merge(Template.java:358)
at org.apache.velocity.Template.merge(Template.java:262)
at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225)
at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284)
at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267)
at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:853)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:808)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:800)
at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79)
at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73)
at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54)
at jdk.internal.reflect.GeneratedMethodAccessor285.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554)
at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221)
at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368)
at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)
at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)
at org.apache.velocity.Template.merge(Template.java:358)
at org.apache.velocity.Template.merge(Template.java:262)
at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225)
at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284)
at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267)
at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:853)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:808)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:800)
at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79)
at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73)
at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54)
at jdk.internal.reflect.GeneratedMethodAccessor285.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571)
at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554)
at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221)
at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368)
at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331)
at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171)
at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147)
at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)
at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:190)
at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439)
at org.apache.velocity.Template.merge(Template.java:358)
at org.apache.velocity.Template.merge(Template.java:262)
at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225)
at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135)
at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284)
at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284)
at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267)
at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866)
at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:846)
at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:832)
at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:91)
at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:85)
at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2565)
at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:180)
at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:651)
at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:339)
at com.xpn.xwiki.web.LegacyActionServlet.service(LegacyActionServlet.java:108)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:122)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.xwiki.wysiwyg.filter.ConversionFilter.doFilter(ConversionFilter.java:61)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:132)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176)
at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145)
at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92)
at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:710)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:457)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:384)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312)
at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:213)
at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:171)
at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145)
at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92)
at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:764)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:354)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:888)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1684)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:829)
A collaboration between KTH, Saab and Ericsson, the CASTOR Software Research Center was inaugurated today at Östermalm (Sweden), with over 50 guests including KTH professors, researchers, industry representatives and employees from the French embassy and Vinnova.
Prof. Benoit Baudry underlined the aim of delivering outstanding research in software engineering and also expressed his wishes to increase collaboration through more co-developments of open source software tools. The goal is also to increase the number of industry PhD students to run the core research activities of the center, and contributing to reducing the cultural gap that currently exists when referring to software technology between the industry and the lab.
Ingemar Söderquist (Saab) and Diarmuid Corcoran (Ericsson) shared their vision about the challenges and opportunities for software technology in their respective application areas (defense and telecom).
Robert Feldt, Professor of Software Engineering at Chalmers University of Technology in Gothenburg, talked about his experience for setting up collaborations with the industry on software research in Sweden.
Kristina Höök, Professor in Interaction Design at KTH, presented her insights after having led for more than 10 years the “Mobile Life” research center at KTH.
The official opening was made by Pontus de Laval – CTO SAAB, Dr. Magnus Frodigh – Acting Head of Research at Ericsson, and Prof. Annika Trigell – KTH Vice-President for research, which followed by a reception dinner.
Check out the Castor Research Center inauguration presentations and photos
Sep 05 2018
STAMP and DeFlacker approach compared
java.lang.NullPointerException at com.xpn.xwiki.web.XWikiServletURLFactory.findAttachmentForDocRevision(XWikiServletURLFactory.java:904) at com.xpn.xwiki.web.XWikiServletURLFactory.createAttachmentURL(XWikiServletURLFactory.java:672) at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5578) at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5589) at com.xpn.xwiki.XWiki.getAttachmentURL(XWiki.java:5626) at com.xpn.xwiki.doc.DefaultDocumentAccessBridge.getAttachmentURL(DefaultDocumentAccessBridge.java:799) at org.xwiki.rendering.internal.wiki.XWikiWikiModel.getLinkURL(XWikiWikiModel.java:155) at org.xwiki.rendering.internal.wiki.XWikiWikiModel.getImageURL(XWikiWikiModel.java:185) at org.xwiki.rendering.internal.renderer.xhtml.image.AttachmentXHTMLImageTypeRenderer.getImageSrcAttributeValue(AttachmentXHTMLImageTypeRenderer.java:75) at org.xwiki.rendering.internal.renderer.xhtml.image.AbstractXHTMLImageTypeRenderer.onImage(AbstractXHTMLImageTypeRenderer.java:106) at org.xwiki.rendering.internal.renderer.xhtml.image.DefaultXHTMLImageRenderer.onImage(DefaultXHTMLImageRenderer.java:82) at org.xwiki.rendering.internal.renderer.xhtml.XHTMLChainingRenderer.onImage(XHTMLChainingRenderer.java:599) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.listener.chaining.EmptyBlockChainingListener.onImage(EmptyBlockChainingListener.java:457) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.listener.chaining.BlockStateChainingListener.onImage(BlockStateChainingListener.java:877) at org.xwiki.rendering.listener.chaining.AbstractChainingListener.onImage(AbstractChainingListener.java:607) at org.xwiki.rendering.block.ImageBlock.traverse(ImageBlock.java:143) at org.xwiki.rendering.block.AbstractBlock.traverse(AbstractBlock.java:593) at org.xwiki.rendering.block.AbstractBlock.traverse(AbstractBlock.java:593) at org.xwiki.rendering.internal.renderer.AbstractBlockRenderer.render(AbstractBlockRenderer.java:63) at org.xwiki.rendering.internal.renderer.AbstractBlockRenderer.render(AbstractBlockRenderer.java:55) at com.xpn.xwiki.doc.XWikiDocument.renderXDOM(XWikiDocument.java:9100) at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1369) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1691) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1600) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1554) at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:859) at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:832) at jdk.internal.reflect.GeneratedMethodAccessor877.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.Foreach.renderBlock(Foreach.java:309) at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:279) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.Foreach.renderBlock(Foreach.java:309) at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:279) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:173) at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:177) at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:60) at org.xwiki.rendering.macro.script.AbstractScriptMacro.evaluateBlock(AbstractScriptMacro.java:279) at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:182) at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:58) at org.xwiki.rendering.internal.transformation.macro.MacroTransformation.transform(MacroTransformation.java:311) at org.xwiki.rendering.internal.transformation.DefaultRenderingContext.transformInContext(DefaultRenderingContext.java:183) at org.xwiki.rendering.internal.transformation.DefaultTransformationManager.performTransformations(DefaultTransformationManager.java:88) at org.xwiki.display.internal.DocumentContentAsyncExecutor.executeInCurrentExecutionContext(DocumentContentAsyncExecutor.java:395) at org.xwiki.display.internal.DocumentContentAsyncExecutor.execute(DocumentContentAsyncExecutor.java:268) at org.xwiki.display.internal.DocumentContentAsyncRenderer.execute(DocumentContentAsyncRenderer.java:112) at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:157) at org.xwiki.rendering.async.internal.block.AbstractBlockAsyncRenderer.render(AbstractBlockAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:290) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.execute(DefaultBlockAsyncRendererExecutor.java:125) at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:67) at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:43) at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:96) at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:39) at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:123) at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:52) at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:68) at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:42) at com.xpn.xwiki.doc.XWikiDocument.display(XWikiDocument.java:1366) at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1503) at com.xpn.xwiki.doc.XWikiDocument.displayDocument(XWikiDocument.java:1452) at com.xpn.xwiki.doc.XWikiDocument.displayDocument(XWikiDocument.java:1421) at com.xpn.xwiki.api.Document.displayDocument(Document.java:787) at jdk.internal.reflect.GeneratedMethodAccessor553.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:704) at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:75) at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:242) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:190) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.xwiki.velocity.internal.directive.TryCatchDirective.render(TryCatchDirective.java:86) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284) at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:853) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:808) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:800) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73) at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54) at jdk.internal.reflect.GeneratedMethodAccessor285.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284) at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:853) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:808) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderNoException(InternalTemplateManager.java:800) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:79) at com.xpn.xwiki.internal.template.DefaultTemplateManager.renderNoException(DefaultTemplateManager.java:73) at org.xwiki.template.script.TemplateScriptService.render(TemplateScriptService.java:54) at jdk.internal.reflect.GeneratedMethodAccessor285.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:571) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:554) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:221) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:368) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:492) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:218) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:331) at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:261) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:304) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:171) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:147) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:190) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:439) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.InternalVelocityEngine.evaluate(InternalVelocityEngine.java:225) at com.xpn.xwiki.internal.template.VelocityTemplateEvaluator.evaluateContent(VelocityTemplateEvaluator.java:105) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.evaluateContent(TemplateAsyncRenderer.java:219) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.renderVelocity(TemplateAsyncRenderer.java:174) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:135) at com.xpn.xwiki.internal.template.TemplateAsyncRenderer.render(TemplateAsyncRenderer.java:54) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.lambda$syncRender$0(DefaultAsyncRendererExecutor.java:284) at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:98) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.syncRender(DefaultAsyncRendererExecutor.java:284) at org.xwiki.rendering.async.internal.DefaultAsyncRendererExecutor.render(DefaultAsyncRendererExecutor.java:267) at org.xwiki.rendering.async.internal.block.DefaultBlockAsyncRendererExecutor.render(DefaultBlockAsyncRendererExecutor.java:154) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:904) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:866) at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:846) at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:832) at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:91) at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:85) at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2565) at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:180) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:651) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:339) at com.xpn.xwiki.web.LegacyActionServlet.service(LegacyActionServlet.java:108) at javax.servlet.http.HttpServlet.service(HttpServlet.java:733) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:122) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.wysiwyg.filter.ConversionFilter.doFilter(ConversionFilter.java:61) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:132) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176) at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145) at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:710) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:457) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:384) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312) at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:213) at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:171) at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145) at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:764) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:354) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:888) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1684) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.base/java.lang.Thread.run(Thread.java:829)
Flaky tests raise a major testing problem in the software industry, in term of performance overhead.
Automatically detecting flaky tests, DeFlaker provides a new milestone in order to cope with them in a principled way.
There is no need to re-run the failed tests anymore.
In the STAMP project, we follow a similar philosophy: we target major testing problems (missing assertions, crash reproduction) and we invent principled tools that target those problems and that are evaluated on large and complex software projects. These projects are both coming from the STAMP project partners and from international open source members from the OW2 community. ...
Sep 03 2018
Descartes Tutorial at ASE 2018
Place: Montpellier Corum Conference Center
Conference: ASE 2018
Instructors: Benoît Baudry (KTH), Vincent Massol (XWiki), Oscar Luis Vera Pérez (INRIA)
Let the CI spot the holes in tested code with Descartes tool
Bring your laptop, your favorite Java project (with JUnit tests) and find out how much of the covered code is actually specified by the test suite!
In this tutorial, we introduce the intriguing concept of pseudo-tested method, i.e. methods that are covered by the test suite, yet no test case fails when the method body is removed. We show that such methods can be found in mature, well-tested projects and we discuss some possible root causes. Attendants have the opportunity to experiment hands-on with our tool, called Descartes tool, which automatically detects pseudo-tested methods in Java projects. ...
Jul 20 2018
Resolving Maven Artifacts with ShrinkWrap... or Not
Trying to generate custom XWiki WARs directly from the unit tests, Vincent Massol, XWiki CTO, gave a try to the the SkrinkWrap Resolver.
Follow his work on this article about Resolving Maven Artifacts with ShrinkWrap... or Not
Jun 25 2018
Environment Testing Experimentations
As part of the STAMP Project, Vincent Massol, XWiki CTO, is conducting five testing experimentations, with issues and limitations.
Read more insights in his article about Environment Testing Experimentations
May 09 2018
Automatic Test Generation DSpot
DSpot is a mutation testing tool that automatically generates new tests from existing test suites. It's being developed as part of the STAMP European research project to which XWiki SAS is participating to.
Read this article from Vincent Massol, CTO of Wiki about DSpot Automatic Test Generation
Nov 17 2017
Controlling Test Quality
How to verify the quality of your tests?
Vincent Massol, XWiki CTO, suggests a strategy for Test Quality Control
Nov 08 2017
Flaky tests handling with Jenkins and JIRA
Flaky tests are a plague because they lower the credibility in your CI strategy, by sending false positive notification emails.
Vincent Massol, XWiki Technical Director suggests a new Flaky test strategy.
- Learn more about Flaky tests handling with Jenkins and JIRA in a blog post by Vincent Massol.
Oct 29 2017
Creating your own project's Quality Dashboard
Conference: SoftShake 2017, Geneva
Offered at SoftShake 2017 in Geneva, by Vincent Massol, Technical Director of XWiki SAS, this brand new presentation explains how to use XWiki to create a custom Quality Dashboard by aggregating metrics from other sites (Jenkins, SonarQube, JIRA and GitHub), saving them locally to draw history graphs and sending emails when combined metric thresholds are crossed. ...
Sep 28 2017
Mutation testing with PIT and Descartes
Vincent Massol, Technical Director of XWiki SAS, wrote an article about a recent experimentation with Descartes, a mutation engine for PIT, in the framework of the STAMP project.
For more information, click on the Pit test report and read the Vincent Massol blog post, published here: Mutation testing with PIT and Descartes
Sep 17 2017
Using Docker and Jenkins to test configurations
XWiki SAS is part of the STAMP research project and one domain of this research is improving configuration testing.
In this article, Vincent Massol, Technical Director of XWiki SAS, suggests a new architecture that should allow XWiki to be tested on various configurations, including various supported databases and versions, various Servlet containers and versions, and Various Browsers and versions.
Aug 30 2017
Mutate and Test Your Tests
by Benoit Baudry
I am extremely proud and happy that my talk on mutation testing got accepted as an early bird for EclipseCon Europe 2017.
We will talk a lot about software testing at the project quality day. In this talk, I will focus on qualitative evaluation of a unit test suite. Statement coverage is commonly used to quantify the quality of a test suite: it measures the ratio of source code statements that are executed at least once when running the test suite. However, statement coverage is known to be a rather weak quality indicator. For example, a test suite that covers 100% of the statements and that has absolutely no assertion is a very bad test suite, yet is considered of excellent quality according statement coverage.
...Jun 06 2017
Jenkins Pipelines: Attach Failing Test Screenshot
How to attach failing test screenshot to a Jenkins Pipeline?
Read Vincent Massol, XWiki CTO article about Jenkins Pipelines
May 10 2017
TPC Strategy Check
Read Vincent Massol, XWiki CTO, article about TPC Strategy Check
Dec 10 2016
Full Automated Test Coverage with Jenkins and Clover
Generating full coverage report for a multi-reactor project is a complex task.
Hopefully, Vincent Massol, XWiki CTO, provides a script with clear explanations for that need.
Ready to jump ?
Read his article on test coverage reports generation with Jenkins and Clover