Bugzilla – Full Text Bug Listing
| Summary: | NoClassDefFoundError when running JUnit Plug-in test referencing a plug-in with a Bundle-ClassPath. | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Product: | [Eclipse Project] JDT | Reporter: | Paul Slauenwhite <paulslau> | ||||||
| Component: | UI | Assignee: | JDT-UI-Inbox <jdt-ui-inbox> | ||||||
| Status: | CLOSED INVALID | QA Contact: | |||||||
| Severity: | critical | ||||||||
| Priority: | P3 | CC: | daniel_megert | ||||||
| Version: | 3.5.1 | ||||||||
| Target Milestone: | --- | ||||||||
| Hardware: | All | ||||||||
| OS: | All | ||||||||
| Whiteboard: | |||||||||
| Bug Depends on: | |||||||||
| Bug Blocks: | 293335 | ||||||||
| Attachments: |
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I'm sorry but this code is full of issues and can never work.
1. the Bundle-Class path only contains the resource folder and hence OSGi will
never ever find any class from that bundle
2. the build.properties is not correct which you can easily see since there is
a warning on it. Without fixing that it can also never work
3. the example has the same package in both bundles. This is called split-package
and needs to be declared in the manifest as such
4. the code that reads and appends should use append(char): simply add this:
public static void main(String[] args) {
String s= TestFileReader.read();
System.out.println(s);
}
and run it ==> 84101115116 instead of "Test" ==> the test will always fail
6. I might be wrong here but as far as I know you cannot use getSystemResource in
the OSGi world. You need to resolve the resource via bundle.getEntry(...) and
convert the URL to a File URL using FileLocator.
Created attachment 150619 [details]
Working Demo
(In reply to comment #1) > I'm sorry but this code is full of issues and can never work. > > 1. the Bundle-Class path only contains the resource folder and hence OSGi will > never ever find any class from that bundle > 2. the build.properties is not correct which you can easily see since there is > a warning on it. Without fixing that it can also never work > 3. the example has the same package in both bundles. This is called > split-package > and needs to be declared in the manifest as such > 4. the code that reads and appends should use append(char): simply add this: > public static void main(String[] args) { > String s= TestFileReader.read(); > System.out.println(s); > } > and run it ==> 84101115116 instead of "Test" ==> the test will always fail > 6. I might be wrong here but as far as I know you cannot use getSystemResource > in > the OSGi world. You need to resolve the resource via bundle.getEntry(...) > and > convert the URL to a File URL using FileLocator. Thanks Dani for your comments/tips. I misunderstood the scope of the Bundle-Class. Apologies for the inconvenience. |
Created attachment 150530 [details] Sample Plug-in Projects. NoClassDefFoundError when running JUnit Plug-in test referencing a plug-in with a Bundle-ClassPath. When running a JUnit Plug-in test from a plug-in project that depends on another plug-in project with one or more entries on the Bundle-ClassPath, the plug-in project is not activated causing the following exception: java.lang.NoClassDefFoundError: <dependent class> Steps to reproduce: 1) Import the attached sample projects. 2) Run /Plugin_Project_B/src/a/b/c/TestFileReaderTest.java as a JUnit Plug-in test. 3) Note the following exception: java.lang.NoClassDefFoundError: a.b.c.TestFileReader at a.b.c.TestFileReaderTest.testRead(TestFileReaderTest.java:12) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37) at java.lang.reflect.Method.invoke(Method.java:599) at junit.framework.TestCase.runTest(TestCase.java:164) at junit.framework.TestCase.runBare(TestCase.java:130) at junit.framework.TestResult$1.protect(TestResult.java:106) at junit.framework.TestResult.runProtected(TestResult.java:124) at junit.framework.TestResult.run(TestResult.java:109) at junit.framework.TestCase.run(TestCase.java:120) at junit.framework.TestSuite.runTest(TestSuite.java:230) at junit.framework.TestSuite.run(TestSuite.java:225) at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) at org.eclipse.pde.internal.junit.runtime.RemotePluginTestRunner.main(RemotePluginTestRunner.java:62) at org.eclipse.pde.internal.junit.runtime.UITestApplication$1.run(UITestApplication.java:114) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:134) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3855) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3476) 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.pde.internal.junit.runtime.UITestApplication.start(UITestApplication.java:46) 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(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37) at java.lang.reflect.Method.invoke(Method.java:599) 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) at org.eclipse.equinox.launcher.Main.main(Main.java:1287) Caused by: java.lang.ClassNotFoundException: a.b.c.TestFileReader at java.lang.ClassNotFoundException.<init>(ClassNotFoundException.java:76) at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:418) 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:101) at java.lang.ClassLoader.loadClass(ClassLoader.java:609) ... 46 more