Groovy JUnit test causes UI freeze when Run As context menu is opened

[mpiggott]

If a JUnit test written in groovy, similar to the above using the context menu and attempting to open Run As causes a freeze (stack below). The test I was looking at: https://github.com/sonatype/nexus-public/blob/master/components/nexus-repository/src/test/java/org/sonatype/nexus/repository/storage/StorageTxImplTest.groovy

   java.lang.Thread.State: RUNNABLE
        at java.lang.Throwable.fillInStackTrace(Native Method)
        at java.lang.Throwable.fillInStackTrace(Throwable.java:783)
        - locked <0x00000000ec5dbe60> (a groovyjarjarantlr.MismatchedTokenException)
        at java.lang.Throwable.<init>(Throwable.java:265)
        at java.lang.Exception.<init>(Exception.java:66)
        at groovyjarjarantlr.ANTLRException.<init>(ANTLRException.java:17)
        at groovyjarjarantlr.RecognitionException.<init>(RecognitionException.java:43)
        at groovyjarjarantlr.MismatchedTokenException.<init>(MismatchedTokenException.java:106)
        at groovyjarjarantlr.Parser.match(Parser.java:211)
        at org.codehaus.groovy.antlr.parser.GroovyRecognizer.multipleAssignmentDeclarationStart(GroovyRecognizer.java:8199)
        at org.codehaus.groovy.antlr.parser.GroovyRecognizer.statement(GroovyRecognizer.java:1344)
        at org.codehaus.groovy.antlr.parser.GroovyRecognizer.blockBody(GroovyRecognizer.java:1787)
        at org.codehaus.groovy.antlr.parser.GroovyRecognizer.openBlock(GroovyRecognizer.java:8862)
        at org.codehaus.groovy.antlr.parser.GroovyRecognizer.variableDefinitions(GroovyRecognizer.java:2747)
        at org.codehaus.groovy.antlr.parser.GroovyRecognizer.declaration(GroovyRecognizer.java:2548)
        at org.codehaus.groovy.antlr.parser.GroovyRecognizer.classField(GroovyRecognizer.java:6336)
        at org.codehaus.groovy.antlr.parser.GroovyRecognizer.classBlock(GroovyRecognizer.java:5611)
        at org.codehaus.groovy.antlr.parser.GroovyRecognizer.classDefinition(GroovyRecognizer.java:2233)
        at org.codehaus.groovy.antlr.parser.GroovyRecognizer.typeDefinitionInternal(GroovyRecognizer.java:2086)
        at org.codehaus.groovy.antlr.parser.GroovyRecognizer.statement(GroovyRecognizer.java:1473)
        at org.codehaus.groovy.antlr.parser.GroovyRecognizer.compilationUnit(GroovyRecognizer.java:865)
        at org.codehaus.groovy.antlr.ErrorRecoveredCSTParserPlugin.transformCSTIntoAST(ErrorRecoveredCSTParserPlugin.java:64)
        at org.codehaus.groovy.antlr.AntlrParserPlugin.parseCST(AntlrParserPlugin.java:113)
        at org.codehaus.groovy.control.SourceUnit.parse(SourceUnit.java:248)
        at org.codehaus.groovy.control.CompilationUnit$8.call(CompilationUnit.java:182)
        at org.codehaus.groovy.control.CompilationUnit.applyToSourceUnits(CompilationUnit.java:966)
        at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:622)
        at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:598)
        at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:575)
        at org.codehaus.jdt.groovy.internal.compiler.ast.GroovyCompilationUnitDeclaration.processToPhase(GroovyCompilationUnitDeclaration.java:220)
        at org.codehaus.jdt.groovy.internal.compiler.ast.GroovyParser.dietParse(GroovyParser.java:388)
        at org.codehaus.jdt.groovy.integration.internal.MultiplexingCommentRecorderParser.dietParse(MultiplexingCommentRecorderParser.java:58)
        at org.eclipse.jdt.internal.compiler.Compiler.internalBeginToCompile(Compiler.java:827)
        at org.eclipse.jdt.internal.compiler.Compiler.beginToCompile(Compiler.java:395)
        at org.eclipse.jdt.core.dom.CompilationUnitResolver.resolve(CompilationUnitResolver.java:1162)
        at org.eclipse.jdt.core.dom.CompilationUnitResolver.resolve(CompilationUnitResolver.java:706)
        at org.eclipse.jdt.core.dom.ASTParser.internalCreateAST(ASTParser.java:1190)
        at org.eclipse.jdt.core.dom.ASTParser.createAST(ASTParser.java:813)
        at org.eclipse.jdt.internal.junit.launcher.JUnit4TestFinder.internalIsTest(JUnit4TestFinder.java:232)
        at org.eclipse.jdt.internal.junit.launcher.JUnit4TestFinder.isTest(JUnit4TestFinder.java:200)
        at org.eclipse.jdt.internal.junit.util.CoreTestSearchEngine.isTestOrTestSuite(CoreTestSearchEngine.java:57)
        at org.eclipse.jdt.internal.junit.JUnitPropertyTester.isJUnitTest(JUnitPropertyTester.java:117)
        at org.eclipse.jdt.internal.junit.JUnitPropertyTester.canLaunchAsJUnitTest(JUnitPropertyTester.java:85)
        at org.eclipse.jdt.internal.junit.JUnitPropertyTester.test(JUnitPropertyTester.java:69)
        at org.eclipse.core.internal.expressions.Property.test(Property.java:58)
        at org.eclipse.core.internal.expressions.TestExpression.evaluate(TestExpression.java:100)
        at org.eclipse.core.internal.expressions.CompositeExpression.evaluateAnd(CompositeExpression.java:51)
        at org.eclipse.core.internal.expressions.AdaptExpression.evaluate(AdaptExpression.java:112)
        at org.eclipse.core.internal.expressions.CompositeExpression.evaluateAnd(CompositeExpression.java:51)
        at org.eclipse.core.internal.expressions.IterateExpression.evaluate(IterateExpression.java:160)
        at org.eclipse.core.internal.expressions.CompositeExpression.evaluateAnd(CompositeExpression.java:51)
        at org.eclipse.core.internal.expressions.WithExpression.evaluate(WithExpression.java:75)
        at org.eclipse.core.internal.expressions.CompositeExpression.evaluateAnd(CompositeExpression.java:51)
        at org.eclipse.core.internal.expressions.EnablementExpression.evaluate(EnablementExpression.java:55)
        at org.eclipse.debug.internal.ui.launchConfigurations.LaunchShortcutExtension.evalEnablementExpression(LaunchShortcutExtension.java:281)
        at org.eclipse.debug.ui.actions.ContextualLaunchAction.isApplicable(ContextualLaunchAction.java:287)
        at org.eclipse.debug.ui.actions.ContextualLaunchAction.fillMenu(ContextualLaunchAction.java:218)
        at org.eclipse.debug.ui.actions.ContextualLaunchAction$1.menuShown(ContextualLaunchAction.java:141)
        at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:256)
        at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:86)
        at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4428)
        at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1079)
        at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1103)
        at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1088)
        at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:802)
        at org.eclipse.jface.action.ActionContributionItem.copyMenu(ActionContributionItem.java:1242)
        at org.eclipse.jface.action.ActionContributionItem.handleShowProxy(ActionContributionItem.java:1222)
        at org.eclipse.jface.action.ActionContributionItem.lambda$7(ActionContributionItem.java:1185)
        at org.eclipse.jface.action.ActionContributionItem$$Lambda$226/14181307.handleEvent(Unknown Source)
        at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:86)
        at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4428)
        at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1079)
        at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1103)
        at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1084)
        at org.eclipse.swt.widgets.Control.WM_INITMENUPOPUP(Control.java:5204)
        at org.eclipse.swt.widgets.Control.windowProc(Control.java:4872)
        at org.eclipse.swt.widgets.Canvas.windowProc(Canvas.java:359)
        at org.eclipse.swt.widgets.Decorations.windowProc(Decorations.java:1657)
        at org.eclipse.swt.widgets.Shell.windowProc(Shell.java:2199)
        at org.eclipse.swt.widgets.Display.windowProc(Display.java:5191)
        at org.eclipse.swt.internal.win32.OS.TrackPopupMenu(Native Method)
        at org.eclipse.swt.widgets.Menu._setVisible(Menu.java:262)
        at org.eclipse.swt.widgets.Display.runPopups(Display.java:4279)
        at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3811)
        at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1155)
        at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
        at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1044)
        at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:153)
        at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:680)
        at org.eclipse.ui.internal.Workbench$$Lambda$65/1442768482.run(Unknown Source)
        at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
        at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:594)
        at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148)
        at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:151)
        at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
        at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
        at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
        at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388)
        at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:653)
        at org.eclipse.equinox.launcher.Main.basicRun(Main.java:590)
        at org.eclipse.equinox.launcher.Main.run(Main.java:1499)

   Locked ownable synchronizers:
        - None

[eric-milles]

Run As requires checking for test methods to display Run As > JUnit Test. I was able to view and bring up the context menus for this file with no issue. You may want to rebuild your Java indexes. And if you could open the Groovy Event Console in the Console view, you may get some more details as to what's going on.

[eric-milles]

@mpiggott Could you try again with the latest snapshot? I was able to import the projects and use the selected file without UI sluggishness. You may also consider adding more memory to Eclipse. In eclipse.ini, I add -Xmx1g to the -vmargs section (usually the end of the file).