throws ExecutionException {

    repeatedlyInterruptTestThread(100, tearDownStack);

    assertThrows(
        TimeoutException.class,
        () -> getUninterruptibly(delayedFuture, 500, TimeUnit.MILLISECONDS));
    assertTrue(Thread.interrupted()); // clears the interrupt state, too

    assertFalse(sleeper.completed);
    assertTrue(getUninterruptibly(delayedFuture));

      future.addListener(listenerLatch::countDown, exec);
    }

    assertSame(Boolean.TRUE, future.get());
    // Wait for the listener latch to complete.
    listenerLatch.await(500, MILLISECONDS);

    exec.shutdown();
    exec.awaitTermination(500, MILLISECONDS);
  }

      future.addListener(listenerLatch::countDown, exec);
    }

    assertSame(Boolean.TRUE, future.get());
    // Wait for the listener latch to complete.
    listenerLatch.await(500, MILLISECONDS);

    exec.shutdown();
    exec.awaitTermination(500, MILLISECONDS);
  }

      throws ExecutionException {

    repeatedlyInterruptTestThread(100, tearDownStack);

    assertThrows(
        TimeoutException.class,
        () -> getUninterruptibly(delayedFuture, 500, TimeUnit.MILLISECONDS));
    assertTrue(Thread.interrupted()); // clears the interrupt state, too

    assertFalse(sleeper.completed);
    assertTrue(getUninterruptibly(delayedFuture));