protected Integer initialValue() {
            return 0;
          }
        };
    Runnable incrementTask = () -> threadLocalCount.set(threadLocalCount.get() + 1);

    FutureTask<@Nullable Void> otherTask =
        new FutureTask<>(
            () -> {
              Future<?> future = executor.submit(incrementTask);
              assertTrue(future.isDone());

          protected Integer initialValue() {
            return 0;
          }
        };
    Runnable incrementTask = () -> threadLocalCount.set(threadLocalCount.get() + 1);

    FutureTask<@Nullable Void> otherTask =
        new FutureTask<>(
            () -> {
              Future<?> future = executor.submit(incrementTask);
              assertTrue(future.isDone());

        (timeout == null) ? "untimed" : timeout,
        scenario,
        expectedOutcome);
  }

  @Override
  protected void runTest() throws Throwable {
    FutureTask<@Nullable Void> task = new FutureTask<>(this::runChosenTest, null);
    startThread(task::run);
    awaitUninterruptibly(doingCallLatch);
    long hangDelayMillis =
        (expectedOutcome == Outcome.HANG)

    assertFalse(waiter.isAlive());
  }

  public void testAwaitTerminated_failedService() throws Exception {
    ManualSwitchedService service = new ManualSwitchedService();
    FutureTask<IllegalStateException> waiter =
        new FutureTask<>(() -> assertThrows(IllegalStateException.class, service::awaitTerminated));
    new Thread(waiter).start();
    service.startAsync();
    service.notifyStarted();

    assertFalse(waiter.isAlive());
  }

  public void testAwaitTerminated_failedService() throws Exception {
    ManualSwitchedService service = new ManualSwitchedService();
    FutureTask<IllegalStateException> waiter =
        new FutureTask<>(() -> assertThrows(IllegalStateException.class, service::awaitTerminated));
    new Thread(waiter).start();
    service.startAsync();
    service.notifyStarted();

        (timeout == null) ? "untimed" : timeout,
        scenario,
        expectedOutcome);
  }

  @Override
  protected void runTest() throws Throwable {
    FutureTask<@Nullable Void> task = new FutureTask<>(this::runChosenTest, null);
    startThread(task::run);
    awaitUninterruptibly(doingCallLatch);
    long hangDelayMillis =
        (expectedOutcome == Outcome.HANG)

     * Any of the setException() calls below can fail if the output Future is cancelled between now
     * and then. This means that we're silently swallowing an exception -- maybe even an Error. But
     * this is no worse than what FutureTask does in that situation. Additionally, because the
     * Future was cancelled, its listeners have been run, so its consumers will not hang.
     *

  //   system scheduling and as such we could either miss our deadline, or unpark() could be delayed
  //   so that it looks like we timed out even though we didn't. For comparison FutureTask respects
  //   completion preferably and AQS is non-deterministic (depends on where in the queue the waiter
  //   is). If we wanted to be strict about it, we could store the unpark() time in the Waiter node

         * Future might not even be a ListenableFuture, just a plain Future. That said, similar
         * problems can exist with methods like FutureTask.done(), not to mention slow calls to
         * Thread.interrupt() (as discussed in InterruptibleTask). At the end of the day, it's
         * unlikely that cancel() will be slow, so we can probably get away with calling it while