private static class DefaultService extends AbstractIdleService {
    @Override
    protected void startUp() throws Exception {}

    @Override
    protected void shutDown() throws Exception {}
  }

  public void testFunctionalServiceStartStop() {
    AbstractIdleService service = new DefaultService();
    service.startAsync().awaitRunning();

    }
  }

  public void testNotifyStartedWhenNotStarting() {
    AbstractService service = new DefaultService();
    assertThrows(IllegalStateException.class, service::notifyStarted);
  }

  public void testNotifyStoppedWhenNotRunning() {
    AbstractService service = new DefaultService();
    assertThrows(IllegalStateException.class, service::notifyStopped);
  }

    }
  }

  public void testNotifyStartedWhenNotStarting() {
    AbstractService service = new DefaultService();
    assertThrows(IllegalStateException.class, service::notifyStarted);
  }

  public void testNotifyStoppedWhenNotRunning() {
    AbstractService service = new DefaultService();
    assertThrows(IllegalStateException.class, service::notifyStopped);
  }