});

  @Override
  protected void setUp() throws Exception {
    super.setUp();

    exec = newCachedThreadPool();

    task.addListener(listenerLatch::countDown, directExecutor());
  }

  @Override
  protected void tearDown() throws Exception {
    if (exec != null) {
      exec.shutdown();
    }

    super.tearDown();
  }

  public void testRunOnPopulatedList() throws Exception {
    Executor exec = newCachedThreadPool();
    CountDownLatch countDownLatch = new CountDownLatch(3);
    list.add(new MockRunnable(countDownLatch), exec);
    list.add(new MockRunnable(countDownLatch), exec);
    list.add(new MockRunnable(countDownLatch), exec);
    assertEquals(3L, countDownLatch.getCount());

    list.execute();

          });

  @Override
  protected void setUp() throws Exception {
    super.setUp();

    exec = newCachedThreadPool();

    task.addListener(listenerLatch::countDown, directExecutor());
  }

  @Override
  protected void tearDown() throws Exception {
    if (exec != null) {
      exec.shutdown();
    }

    super.tearDown();
  }

  public void testRunOnPopulatedList() throws Exception {
    Executor exec = newCachedThreadPool();
    CountDownLatch countDownLatch = new CountDownLatch(3);
    list.add(new MockRunnable(countDownLatch), exec);
    list.add(new MockRunnable(countDownLatch), exec);
    list.add(new MockRunnable(countDownLatch), exec);
    assertEquals(3L, countDownLatch.getCount());

    list.execute();

  private final ExecutorService exec;
  private final ListenableFuture<?> future;
  private final CountDownLatch latch;

  public ListenableFutureTester(ListenableFuture<?> future) {
    this.exec = newCachedThreadPool();
    this.future = checkNotNull(future);
    this.latch = new CountDownLatch(1);
  }

  public void setUp() {
    future.addListener(latch::countDown, exec);

    assertEquals(1, latch.getCount());

        ExecResult r = exec(cmd);
        if (r.exitCode() != 0) {
            throw new AssertionError(String.join(" ", cmd) + " failed: " + r);
        }
    }

    private static String stdout(String... cmd) throws IOException, InterruptedException, ExecutionException {
        ExecResult r = exec(cmd);
        if (r.exitCode() != 0) {

    # may lock new files or symlinks.
    # They may be causing sporadic "Permission denied" errors during Bazel builds.
    # b/461500885
    docker exec tf powershell -NoProfile -Command 'Stop-Service -Name SysMain,DiagTrack -Force -ErrorAction SilentlyContinue'
  fi

fi

    }

    private static boolean refExists(String ref) throws IOException, InterruptedException {
        ExecResult r = exec("git", "rev-parse", "--verify", ref);
        return r.exitCode == 0;
    }

    private static void run(String... cmd) throws IOException, InterruptedException {
        ExecResult r = exec(cmd);
        if (r.exitCode != 0) {
            throw new AssertionError(String.join(" ", cmd) + " failed: " + r);
        }

  private final ExecutorService exec;
  private final ListenableFuture<?> future;
  private final CountDownLatch latch;

  public ListenableFutureTester(ListenableFuture<?> future) {
    this.exec = newCachedThreadPool();
    this.future = checkNotNull(future);
    this.latch = new CountDownLatch(1);
  }

  public void setUp() {
    future.addListener(latch::countDown, exec);

    assertEquals(1, latch.getCount());

  protected ForwardingListenableFuture() {}

  @Override
  protected abstract ListenableFuture<? extends V> delegate();

  @Override
  public void addListener(Runnable listener, Executor exec) {
    delegate().addListener(listener, exec);
  }

  // TODO(cpovirk): Use standard Javadoc form for SimpleForwarding* class and constructor
  /**
   * A simplified version of {@link ForwardingListenableFuture} where subclasses can pass in an