repeatedlyInterruptTestThread(20, tearDownStack);
    semaphore.tryAcquireUnsuccessfully(10, 70);
    assertInterrupted();
  }

  // executor.awaitTermination Testcases
  public void testTryAwaitTerminationUninterruptiblyDuration_success() {
    ExecutorService executor = newFixedThreadPool(1);
    requestInterruptIn(500);
    executor.execute(new SleepTask(1000));
    executor.shutdown();