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

    service.stopAsync();
    service.stopAsync();
    service.stopAsync().awaitTerminated();
    assertEquals(Service.State.TERMINATED, service.state());
    service.stopAsync().awaitTerminated();
    assertEquals(Service.State.TERMINATED, service.state());

    executionThread.join();
  }

    assertThat(service.transitionStates).containsExactly(Service.State.STARTING);
  }

  public void testStop_withoutStart() {
    TestService service = new TestService();
    service.stopAsync().awaitTerminated();
    assertEquals(0, service.startUpCalled);
    assertEquals(0, service.shutDownCalled);
    assertEquals(Service.State.TERMINATED, service.state());
    assertThat(service.transitionStates).isEmpty();
  }

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

    service.stopAsync();
    service.stopAsync();
    service.stopAsync().awaitTerminated();
    assertEquals(Service.State.TERMINATED, service.state());
    service.stopAsync().awaitTerminated();
    assertEquals(Service.State.TERMINATED, service.state());

    executionThread.join();
  }

    assertThat(service.transitionStates).containsExactly(Service.State.STARTING);
  }

  public void testStop_withoutStart() {
    TestService service = new TestService();
    service.stopAsync().awaitTerminated();
    assertEquals(0, service.startUpCalled);
    assertEquals(0, service.shutDownCalled);
    assertEquals(Service.State.TERMINATED, service.state());
    assertThat(service.transitionStates).isEmpty();
  }

  /** @since 15.0 */
  @Override
  public final void awaitTerminated() {
    delegate.awaitTerminated();
  }

  /** @since 28.0 */
  @Override
  public final void awaitTerminated(Duration timeout) throws TimeoutException {
    Service.super.awaitTerminated(timeout);
  }

  /** @since 15.0 */
  @Override
  public final void awaitTerminated(long timeout, TimeUnit unit) throws TimeoutException {

  /** @since 15.0 */
  @Override
  public final void awaitTerminated() {
    delegate.awaitTerminated();
  }

  /** @since 28.0 */
  @Override
  public final void awaitTerminated(Duration timeout) throws TimeoutException {
    Service.super.awaitTerminated(timeout);
  }

  /** @since 15.0 */
  @Override
  public final void awaitTerminated(long timeout, TimeUnit unit) throws TimeoutException {

          }

          @Override
          public final void awaitTerminated() {
            delegate.awaitTerminated();
          }

          @Override
          public final void awaitTerminated(long timeout, TimeUnit unit) throws TimeoutException {
            delegate.awaitTerminated(timeout, unit);
          }

          @Override
          public final boolean isRunning() {