Another data point:

assertTrue(true);

also produces the same stack trace!

Regards,
Glyn

On 7 Dec 2011, at 16:16, Glyn Normington wrote:

> When an org.junit.Assert.assertEquals fails in a test I'm running under Pax 
> Exam, I get an unhelpful stack trace in the HTML test results. The testcase 
> is not present in the stack trace, so it's hard to see which assert failed. 
> (I can't see the 'right' stack trace anywhere else, e.g. in logs, for that 
> matter.) The full stack trace is immediately below.
> 
> I tried running under Eclipse and putting a breakpoint at 
> JUnit4TestRunner.java:263, but the caught exception was even more cryptic. 
> See further below (and apologies for the lack of formatting).
> 
> When I comment out the assertEquals in the testcase, the test passes both 
> under Gradle and under Eclipse, so I have the feeling that the test 
> configuration is reasonable.
> 
> Any suggestions?
> 
> Regards,
> Glyn
> 
> java.lang.AssertionError: org.junit.Assert
>       at org.junit.Assert.fail(Assert.java:93)
>       at 
> org.ops4j.pax.exam.junit.JUnit4TestRunner$2.evaluate(JUnit4TestRunner.java:263)
>       at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
>       at 
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
>       at 
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
>       at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
>       at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
>       at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
>       at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
>       at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
>       at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
>       at 
> org.ops4j.pax.exam.junit.JUnit4TestRunner.run(JUnit4TestRunner.java:86)
>       at 
> org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecuter.execute(JUnitTestClassExecuter.java:51)
>       at 
> org.gradle.api.internal.tasks.testing.junit.JUnitTestClassProcessor.processTestClass(JUnitTestClassProcessor.java:63)
>       at 
> org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:49)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>       at java.lang.reflect.Method.invoke(Method.java:597)
>       at 
> org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
>       at 
> org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
>       at 
> org.gradle.messaging.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:32)
>       at 
> org.gradle.messaging.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:75)
>       at $Proxy3.processTestClass(Unknown Source)
>       at 
> org.gradle.api.internal.tasks.testing.worker.TestWorker.processTestClass(TestWorker.java:86)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>       at java.lang.reflect.Method.invoke(Method.java:597)
>       at 
> org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
>       at 
> org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
>       at 
> org.gradle.messaging.remote.internal.TypeCastDispatch.dispatch(TypeCastDispatch.java:30)
>       at 
> org.gradle.messaging.remote.internal.WorkerProtocol.handleIncoming(WorkerProtocol.java:53)
>       at 
> org.gradle.messaging.remote.internal.WorkerProtocol.handleIncoming(WorkerProtocol.java:31)
>       at 
> org.gradle.messaging.remote.internal.ProtocolStack$ProtocolStage.handleIncoming(ProtocolStack.java:167)
>       at 
> org.gradle.messaging.remote.internal.ProtocolStack$BottomStage.handleIncoming(ProtocolStack.java:277)
>       at 
> org.gradle.messaging.remote.internal.ProtocolStack$BottomConnection$1.run(ProtocolStack.java:299)
>       at 
> org.gradle.messaging.remote.internal.ProtocolStack$ExecuteRunnable.dispatch(ProtocolStack.java:120)
>       at 
> org.gradle.messaging.remote.internal.ProtocolStack$ExecuteRunnable.dispatch(ProtocolStack.java:116)
>       at 
> org.gradle.messaging.dispatch.AsyncDispatch.dispatchMessages(AsyncDispatch.java:132)
>       at 
> org.gradle.messaging.dispatch.AsyncDispatch.access$000(AsyncDispatch.java:33)
>       at 
> org.gradle.messaging.dispatch.AsyncDispatch$1.run(AsyncDispatch.java:72)
>       at 
> org.gradle.messaging.concurrent.DefaultExecutorFactory$StoppableExecutorImpl$1.run(DefaultExecutorFactory.java:64)
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>       at java.lang.Thread.run(Thread.java:680)
> 
> [org.ops4j.pax.exam.raw.extender.intern.ProbeInvokerImpl.injectContextAndInvoke(ProbeInvokerImpl.java:118),
>  
> org.ops4j.pax.exam.raw.extender.intern.ProbeInvokerImpl.findAndInvoke(ProbeInvokerImpl.java:71),
>  
> org.ops4j.pax.exam.raw.extender.intern.ProbeInvokerImpl.call(ProbeInvokerImpl.java:58),
>  sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method), 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39),
>  
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25),
>  java.lang.reflect.Method.invoke(Method.java:597), 
> org.ops4j.pax.exam.rbc.internal.RemoteBundleContextImpl.remoteCall(RemoteBundleContextImpl.java:86),
>  sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method), 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39),
>  
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25),
>  java.lang.reflect.Method.invoke(Method.java:597), 
> sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:305), 
> sun.rmi.transport.Transport$1.run(Transport.java:159), 
> java.security.AccessController.doPrivileged(Native Method), 
> sun.rmi.transport.Transport.serviceCall(Transport.java:155), 
> sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535), 
> sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790),
>  
> sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649),
>  
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886),
>  
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908),
>  java.lang.Thread.run(Thread.java:680)]
> 

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