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Created attachment 110911 [details] JUnit test for the bug Enough said in the summary. See the attached JUnit test. Stack trace looks like: at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1424) at org.openide.util.RequestProcessor$Processor.doEvaluate(RequestProcessor.java:2019) at org.openide.util.RequestProcessor$Task.waitFinished(RequestProcessor.java:1659) at oracle.ide.controller.AsynchronousController$TaskInfo.waitFinished(AsynchronousController.java:116) at oracle.ide.IdeController.handleExclusive(IdeController.java:1222) at oracle.ide.IdeController.handleEvent(IdeController.java:1136) at oracle.ide.controller.AsynchronousController$AcRunnable.run(AsynchronousController.java:281) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1424) at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1973)
I have probably too fast computer. The test succeeded twice, only then it failed.
ergonomics#988ee7a54eb3 - let see how many other tests will get broken by these changes.
Integrated into 'main-golden' Changeset: http://hg.netbeans.org/main-golden/rev/07ef3b54c2e1 User: Jaroslav Tulach <jtulach@netbeans.org> Log: In preparation of #202354: calling cancel second time should return false, as there is nothing to cancel. cancelled task should not be finished.