computationStarted.countDown();
                cache.getUnchecked("b");
                computationComplete.countDown();
              }
            })
        .start();

    // wait for the computingEntry to be created
    computationStarted.await();
    cache.invalidateAll();
    // let the computation proceed
    computingLatch.countDown();

    service.expectedShutdownState = Service.State.RUNNING;

    service.startAsync().awaitRunning();
    assertTrue(service.startUpCalled);
    assertEquals(Service.State.RUNNING, service.state());

    exitRun.countDown(); // the service will exit voluntarily
    executionThread.join();

    assertTrue(service.shutDownCalled);
    assertEquals(Service.State.TERMINATED, service.state());

    Object unused =
        new Object() {
          @SuppressWarnings({"removal", "Finalize"}) // b/260137033
          @Override
          protected void finalize() {
            latch.countDown();
          }
        };
    unused = null; // Hint to the JIT that unused is unreachable
    GcFinalization.await(latch);
    assertEquals(0, latch.getCount());
  }

  public void testAwaitDone_future() {

      arguments.add(Duration.ofMillis(timeout.millis));
    }
    try {
      Object result;
      doingCallLatch.countDown();
      try {
        result = method.invoke(monitor, arguments.toArray());
      } finally {
        callCompletedLatch.countDown();
      }
      if (result == null) {
        return Outcome.SUCCESS;
      } else if ((Boolean) result) {
        return Outcome.SUCCESS;

    return new ListenerCallQueue.Event<Object>() {
      @Override
      public void call(Object listener) {
        latch.countDown();
      }

      @Override
      public String toString() {
        return "countDown";
      }
    };
  }

    return new ListenerCallQueue.Event<Object>() {
      @Override
      public void call(Object listener) {
        latch.countDown();
      }

      @Override
      public String toString() {
        return "countDown";
      }
    };
  }

    for (int i = 0; i < SIZE; i++) {
      aa.set(i, (double) COUNTDOWN);
    }
    Counter c1 = new Counter(aa);
    Counter c2 = new Counter(aa);
    Thread t1 = newStartedThread(c1);
    Thread t2 = newStartedThread(c2);
    awaitTermination(t1);
    awaitTermination(t2);
    assertEquals(SIZE * COUNTDOWN, c1.counts + c2.counts);
  }

  /** a deserialized serialized array holds same values */

    assertThat(closingFuture.cancel(false)).isTrue();
    ValueAndCloser<?> unused = finishToValueAndCloser(closingFuture);
    waitUntilClosed(closingFuture);
    futureCancelled.countDown();
  }

  private <V> ValueAndCloser<V> finishToValueAndCloser(ClosingFuture<V> closingFuture) {
    final CountDownLatch valueAndCloserSet = new CountDownLatch(1);
    closingFuture.finishToValueAndCloser(

          }
        };
    Thread thread1 = new Thread(execute);
    Thread thread2 = new Thread(execute);
    thread1.start();
    thread2.start();
    assertEquals(0, runCalled.get());
    okayToRun.countDown();
    thread1.join();
    thread2.join();
    assertEquals(1, runCalled.get());
  }

  public void testAddAfterRun() throws Exception {
    // Run the previous test
    testRunOnPopulatedList();

    val waiting = CountDownLatch(1)
    client =
      client.newBuilder()
        .addInterceptor(
          Interceptor { chain: Interceptor.Chain? ->
            try {
              ready.countDown()
              waiting.await()
            } catch (e: InterruptedException) {
              throw AssertionError()
            }
            throw IOException()
          },
        )
        .build()