CountDownLatch countDownLatch = new CountDownLatch(1);
    list.add(new MockRunnable(countDownLatch), newCachedThreadPool());
    assertTrue(countDownLatch.await(1L, SECONDS));
  }

  public void testOrdering() throws Exception {
    AtomicInteger integer = new AtomicInteger();
    for (int i = 0; i < 10; i++) {
      int expectedCount = i;
      list.add(
          new Runnable() {
            @Override

    CountDownLatch countDownLatch = new CountDownLatch(1);
    list.add(new MockRunnable(countDownLatch), newCachedThreadPool());
    assertTrue(countDownLatch.await(1L, SECONDS));
  }

  public void testOrdering() throws Exception {
    AtomicInteger integer = new AtomicInteger();
    for (int i = 0; i < 10; i++) {
      int expectedCount = i;
      list.add(
          new Runnable() {
            @Override

    // No change yet.
    assertEquals(2, totalCalls.get());
    fakePool.runAll();
    assertEquals(5, totalCalls.get());
    assertFalse(fakePool.hasNext());
  }

  public void testOrdering() {
    List<Integer> callOrder = new ArrayList<>();

    class FakeOp implements Runnable {
      final int op;

      FakeOp(int op) {
        this.op = op;
      }

      @Override