DrJava DefinitionsPaneMemoryLeakTest fails on Mac

I submitted a bugfix for a problem with the debug panel when no
debugger is available.

I noticed that on the Mac, the DefinitionsPaneMemoryLeakTest now
fails:

[cc] [junit] DefinitionsPaneMemoryLeakTest 26.92 sec
[junit] Testsuite: edu.rice.cs.drjava.ui.DefinitionsPaneMemoryLeakTest
[junit] Tests run: 1, Failures: 1, Errors: 0
[junit] ————- Standard Error —————–
[junit] Skipped analysing class java.security.ProtectionDomain
because of java.lang.AssertionError
[junit] ————- —————- —————
[junit] Testcase:
testDocumentPaneMemoryLeak(edu.rice.cs.drjava.ui.DefinitionsPaneMemoryLeakTest): FAILED
[junit] Document 0 leaked:
[junit] private static sun.awt.AppContext
sun.awt.AppContext.mainAppContext->
[junit] sun.awt.AppContext@4998a455-table->
[junit] java.util.HashMap@7f1bfcfc-table->

…

[junit] [Ljava.beans.PropertyChangeListener;@67b50846-[373]->
[junit] javax.swing.JViewport$1@7ceade87-this$0->
[junit] javax.swing.JViewport@48be3a5e-component->
[junit] java.util.ArrayList@6b333f77-elementData->
[junit] [Ljava.lang.Object;@559b52d3-[0]->
[junit] edu.rice.cs.drjava.ui.DefinitionsPane@2a38d0a8-_doc->
[junit] edu.rice.cs.drjava.model.DefaultGlobalModel$ConcreteOpenDefDoc@557e5cbd
[junit] at
org.netbeans.test.MemoryTestUtils.assertGC(MemoryTestUtils.java:137)[/cc]

It passes on Windows, and I haven’t tried it on Linux. I rolled
back as far as revision 5266, which was from June 3, 2010, and it was
still failing on the Mac. I have a feeling that something must have
changed in Mac OS (Lion) or the Java version I have running
(1.6.0_29). I know I’ve successfully run the unit tests many times
since then on the Mac, even on my MacBook Pro. I even think I have run
them successfully on Mac OS Lion.

It would be great if I could still run the unit tests on an older Mac, with an older Mac OS. I’ll dig into this, but it may take some time.