service.stopAsync().awaitTerminated();
    assertTrue(service.shutDownCalled);
    assertEquals(Service.State.TERMINATED, service.state());
    executionThread.join();
  }

  public void testServiceStopIdempotence() throws Exception {
    WaitOnRunService service = new WaitOnRunService();

    service.startAsync().awaitRunning();
    enterRun.await(); // to avoid stopping the service until run() is invoked