Test works fine on Windows

Created attachment 8696 [details]
Stack trace

I cannot reproduce it on any other environment than on fiji. Please,
try to add some waiting before combo selection:

line 63: new EventTool().waitNoEvent(1000);

I cannot find in documentation, where should I insert those
waitNoEvents. This was just an example of "randomly failed" test. How
should we avoid those fails? We cannot insert waitNoEvents everywhere.

I think these issue should be solved on lower level than the test level.

Hmm, sometimes I have the same problem, even if I wait for 3s.

JavaNode node = new JavaNode(optTree, ...);
new EventTool().waitNoEvent(3000);
node.delete();

see
org.netbeans.test.java.compilation.CompilerSettings.deleteTestCompiler(CompilerSettings.java:110)

this test is in CVS module java/test/qa-functional/src

Created attachment 8790 [details]
Stack trace

It is probably some timing issue. We need to investigate it more.
In the meantime I would recommend to change mentioned test case the
following way:

        OptionsOperator optionsOperator = OptionsOperator.invoke();
        optionsOperator.selectOption(BUILDING + "|" + COMPILER_TYPES +
"|" + TEST_COMPILER);
        JTreeOperator optTree= optionsOperator.treeTable().tree();

        JavaNode node = new JavaNode(optTree, BUILDING + "|" +
COMPILER_TYPES + "|" + TEST_COMPILER);
        node.delete();

It is because tree in Options frame is not a regular JTree but
TreeTable and that is why must be handled a different way that an
ordinary tree.

Fixed thanks to Shura in version 2.0.48.
TreeTableOperator.scrollToPath() method was overriden.

I'm sorry, but I still have problems with "scrolling". I do
RepositoryTabOperator.invoke();
JavaNode javaNode = new JavaNode(node);
javaNode.select();
new EventTool().waitNoEvent(1000);
javaNode.performMenuAction("Tools|" +
Bundle.getString("org.netbeans.modules.java.imptool.Bundle",
"LAB_ImpToolAction"));

Created attachment 8997 [details]
Stack trace

Failure no more happens in a test case from which attached stack trace is.

Resolved for 3.4.x or earlier, no new info since then -> closing.