this.everyMillis = everyMillis;
      this.interruptee = interruptee;
    }

    @Override
    public void run() {
      while (true) {
        try {
          Thread.sleep(everyMillis);
        } catch (InterruptedException e) {
          // ok. just stop sleeping.
        }
        if (shouldStop) {
          break;
        }
        interruptee.interrupt();
      }
    }

        public String call() throws InterruptedException {
          MILLISECONDS.sleep(DELAY_MS);
          return GOOD_CALLABLE_RESULT;
        }
      };
  private static final Callable<String> BAD_CALLABLE =
      new Callable<String>() {
        @Override
        public String call() throws InterruptedException, SampleException {
          MILLISECONDS.sleep(DELAY_MS);
          throw new SampleException();
        }
      };

          public void run() {
            taskDone = true;
          }
        };
    ScheduledFuture<?> future =
        TestingExecutors.noOpScheduledExecutor().schedule(task, 10, TimeUnit.MILLISECONDS);
    Thread.sleep(20);
    assertFalse(taskDone);
    assertFalse(future.isDone());
  }

  public void testNoOpScheduledExecutorShutdown() {
    ListeningScheduledExecutorService executor = TestingExecutors.noOpScheduledExecutor();

    }
  }

  private static void assertAtLeastTimePassed(Stopwatch stopwatch, long expectedMillis) {
    long elapsedMillis = stopwatch.elapsed(MILLISECONDS);
    /*
     * The "+ 5" below is to permit, say, sleep(10) to sleep only 9 milliseconds. We see such
     * behavior sometimes when running these tests publicly as part of Guava. "+ 5" is probably more
     * generous than it needs to be.
     */
    assertTrue(

      this.everyMillis = everyMillis;
      this.interruptee = interruptee;
    }

    @Override
    public void run() {
      while (true) {
        try {
          Thread.sleep(everyMillis);
        } catch (InterruptedException e) {
          // ok. just stop sleeping.
        }
        if (shouldStop) {
          break;
        }
        interruptee.interrupt();
      }
    }

        public String call() throws InterruptedException {
          MILLISECONDS.sleep(DELAY_MS);
          return GOOD_CALLABLE_RESULT;
        }
      };
  private static final Callable<String> BAD_CALLABLE =
      new Callable<String>() {
        @Override
        public String call() throws InterruptedException, SampleException {
          MILLISECONDS.sleep(DELAY_MS);
          throw new SampleException();
        }
      };

    assertEquals(1, service.numIterations.get());
    service.stopAsync();
    service.secondBarrier.await();
    service.awaitTerminated();
    // Sleep for a while just to ensure that our task wasn't called again.
    Thread.sleep(UNIT.toMillis(3 * DELAY));
    assertEquals(1, service.numIterations.get());
  }

  public void testCustomScheduler_deadlock() throws InterruptedException, BrokenBarrierException {

    }
  }

  /**
   * Delays, via Thread.sleep, for the given millisecond delay, but if the sleep is shorter than
   * specified, may re-sleep or yield until time elapses.
   */
  static void delay(long millis) throws InterruptedException {
    long startTime = System.nanoTime();
    long ns = millis * 1000 * 1000;
    for (; ; ) {
      if (millis > 0L) Thread.sleep(millis);
      else // too short to sleep

    List<Integer> result = addSupplier.get();
    assertEquals(Integer.valueOf(0), result.get(0));
    assertEquals(Integer.valueOf(1), result.get(1));
  }

  @J2ktIncompatible
  @GwtIncompatible // Thread.sleep
  @SuppressWarnings("DoNotCall")
  public void testMemoizeWithExpiration_longTimeUnit() throws InterruptedException {
    CountingSupplier countingSupplier = new CountingSupplier();

    List<Integer> result = addSupplier.get();
    assertEquals(Integer.valueOf(0), result.get(0));
    assertEquals(Integer.valueOf(1), result.get(1));
  }

  @J2ktIncompatible
  @GwtIncompatible // Thread.sleep
  @SuppressWarnings("DoNotCall")
  public void testMemoizeWithExpiration_longTimeUnit() throws InterruptedException {
    CountingSupplier countingSupplier = new CountingSupplier();