Bug 127438 junit view: fast view icon shows "completed" state when view is shown
org.eclipse.jdt.junit/src/org/eclipse/jdt/internal/junit/ui/TestRunnerViewPart.java
public JUnitIsRunningJob(String name) {
			super(name);
			setSystem(true);
		}
		public IStatus run(IProgressMonitor monitor) {
			
			fJUnitIsRunningLock.acquire();
			return Status.OK_STATUS;
		}
		public boolean belongsTo(Object family) {
			return family == TestRunnerViewPart.FAMILY_JUNIT_RUN;
		}
	}
	private class StopAction extends Action {
		public StopAction() {
			setText(JUnitMessages.TestRunnerViewPart_stopaction_text);
			setToolTipText(JUnitMessages.TestRunnerViewPart_stopaction_tooltip);
			setDisabledImageDescriptor(JUnitPlugin.getImageDescriptor("dlcl16/stop.gif")); 
			setHoverImageDescriptor(JUnitPlugin.getImageDescriptor("elcl16/stop.gif")); 
			setImageDescriptor(JUnitPlugin.getImageDescriptor("elcl16/stop.gif")); 
		}
		public void run() {
			stopTest();
			setEnabled(false);
		}
	}
	private class RerunLastAction extends Action {