Future<String> f = testExecutor.submit(task);
      mock.assertLastMethodCalled("submit");
      assertEquals(RESULT_VALUE, f.get());
    }
  }

  public void testInvokeAll() throws InterruptedException, ExecutionException {
    List<Callable<String>> tasks = createTasks(3);
    {
      MockExecutor mock = new MockExecutor();
      TestExecutor testExecutor = new TestExecutor(mock);