Compiling JS-Test-Driver Plugin and Installing it on Eclipse 3.5.1 Galileo?

Question

I downloaded the source of the js-test-driver from: http://js-test-driver.googlecode.com/svn/tags/1.2

It compiles just fine, but one of the unit tests fails:

[junit] Tests run: 1, Failures: 1, Errors: 0, Time elapsed: 0.012 sec
[junit] Test com.google.jstestdriver.eclipse.ui.views.FailureOnlyViewerFilterTest FAILED

I am using: - ANT 1.7.1 - javac 1.6.0_12

And I'm trying to install the js-test-driver plugin on Eclipse 3.5.1 Galileo

Despite the failed test I installed the plugin into my C:\eclipse\dropins\js-test-driver directory by copying (exporting from svn) the compiled feature and plugins directories there, to see if it would yield any hints to what the problem is.

When I started eclipse, added the plugin to the panel using Window->Show View->Other... Other->JsTestDriver

The plugin for the panel is added, but it displays the following error instead of the plugin in the panel:

Could not create the view: Plugin com.google.jstestdriver.eclipse.ui was unable to load class com.google.jstestdriver.eclipse.ui.views.JsTestDriverView.

And then bellow that I get the following stack trace after clicking Details:

java.lang.ClassNotFoundException: com.google.jstestdriver.eclipse.ui.views.JsTestDriverView
    at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:494)
    at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:410)
    at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:398)
    at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:105)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at org.eclipse.osgi.internal.loader.BundleLoader.loadClass(BundleLoader.java:326)
    at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:231)
    at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1193)
    at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:160)
    at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:874)
    at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)
    at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:51)
    at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:267)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:263)
    at org.eclipse.ui.internal.registry.ViewDescriptor.createView(ViewDescriptor.java:63)
    at org.eclipse.ui.internal.ViewReference.createPartHelper(ViewReference.java:324)
    at org.eclipse.ui.internal.ViewReference.createPart(ViewReference.java:226)
    at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595)
    at org.eclipse.ui.internal.Perspective.showView(Perspective.java:2229)
    at org.eclipse.ui.internal.WorkbenchPage.busyShowView(WorkbenchPage.java:1067)
    at org.eclipse.ui.internal.WorkbenchPage$20.run(WorkbenchPage.java:3816)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    at org.eclipse.ui.internal.WorkbenchPage.showView(WorkbenchPage.java:3813)
    at org.eclipse.ui.internal.WorkbenchPage.showView(WorkbenchPage.java:3789)
    at org.eclipse.ui.handlers.ShowViewHandler.openView(ShowViewHandler.java:165)
    at org.eclipse.ui.handlers.ShowViewHandler.openOther(ShowViewHandler.java:109)
    at org.eclipse.ui.handlers.ShowViewHandler.execute(ShowViewHandler.java:77)
    at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:294)
    at org.eclipse.core.commands.Command.executeWithChecks(Command.java:476)
    at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508)
    at org.eclipse.ui.internal.handlers.HandlerService.executeCommand(HandlerService.java:169)
    at org.eclipse.ui.internal.handlers.SlaveHandlerService.executeCommand(SlaveHandlerService.java:241)
    at org.eclipse.ui.internal.ShowViewMenu$3.run(ShowViewMenu.java:141)
    at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)
    at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584)
    at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501)
    at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:411)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3880)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3473)
    at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2405)
    at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2369)
    at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2221)
    at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:500)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:493)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:194)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:368)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:559)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1311)

Additionally, if I go to the settings in Window->Preferences and try to view the JS Test Driver Preferences, I get the following dialog:

Problem Occurred Unable to create the selected preference page. com.google.jstestdriver.eclipse.ui.WorkbenchPreferencePage

Thank you, Andrew J. Leer

Answer 1

This error message says, the class com.google.jstestdriver.eclipse.ui.views.JsTestDriverView has not been found by the classloaders. Possible solutions:

• Trivial: is there the correctly named class file inside the compiled solution?
• If there is the correct class file, look the source of that View code, and look, what it's trying to load.
• Check for dependencies, as in case of unsatisfied dependencies (that are not written down correctly), it is possible that the classloaders doesn't find some classes.
• Look for activator classes in the project, and check what they are doing. They could also introduce such problems.