@Test public void scheduleAtFixedRateTest() { TestPriorityScheduler testScheduler = new TestPriorityScheduler(); PrioritySchedulerDefaultPriorityWrapper psw = new PrioritySchedulerDefaultPriorityWrapper(testScheduler, TaskPriority.Low); psw.scheduleAtFixedRate(DoNothingRunnable.instance(), 10, 10); assertTrue(testScheduler.scheduleAtFixedRateCalled); // reset and try with priority testScheduler.scheduleAtFixedRateCalled = false; psw.scheduleAtFixedRate(DoNothingRunnable.instance(), 10, 10, TaskPriority.High); assertTrue(testScheduler.scheduleAtFixedRateCalled); }