}

  public void testFutureBeforeCallback() throws Throwable {
    inputFuture.set(VALID_INPUT_DATA);

    listener.assertSuccess(getSuccessfulResult());
  }

  public void testInputFutureToString() throws Throwable {
    assertThat(resultFuture.toString()).contains(inputFuture.toString());
  }

  /**
   * Override to return a chaining listenableFuture that returns the result of getSuccessfulResult()