def app_startup() -> None:
        state.app_startup = True

    @app.on_event("shutdown")
    def app_shutdown() -> None:
        state.app_shutdown = True

    router = APIRouter()

    @router.on_event("startup")
    def router_startup() -> None:
        state.router_startup = True

    @router.on_event("shutdown")
    def router_shutdown() -> None:
        state.router_shutdown = True

  }

  open fun enqueueResponse(response: MockResponse) {
    responseQueue.add(response)
  }

  open fun clear() {
    responseQueue.clear()
  }

  override fun shutdown() {
    responseQueue.add(DEAD_LETTER)
  }

  open fun setFailFast(failFast: Boolean) {
    val failFastResponse =
      if (failFast) {
        MockResponse(code = HttpURLConnection.HTTP_NOT_FOUND)

  @Test
  fun shutdownWithoutStart() {
    val server = MockWebServer()
    server.shutdown()
  }

  @Test
  fun closeViaClosable() {
    val server: Closeable = MockWebServer()
    server.close()
  }

  @Test
  fun shutdownWithoutEnqueue() {
    val server = MockWebServer()
    server.start()
    server.shutdown()
  }

  @Test
  fun portImplicitlyStarts() {

  @Synchronized
  @Throws(IOException::class)
  fun shutdown() {
    if (shutdown) return
    shutdown = true

    if (!started) return // Nothing to shut down.
    val serverSocket = this.serverSocket ?: return // If this is null, start() must have failed.

    // Cause acceptConnections() to break out.
    serverSocket.close()

    // Await shutdown.
    for (queue in taskRunner.activeQueues()) {

      enterRun.countDown();
      try {
        exitRun.await();
      } catch (InterruptedException e) {
        throw new RuntimeException(e);
      }
    }

    @Override
    protected void shutDown() {
      assertTrue(startUpCalled);
      assertTrue(runCalled);
      assertFalse(shutDownCalled);
      shutDownCalled = true;
      assertEquals(expectedShutdownState, state());
    }

    @Override

      return delegate.dispatch(request.unwrap()).wrap()
    }

    override fun peek(): mockwebserver3.MockResponse {
      return delegate.peek().wrap()
    }

    override fun shutdown() {
      delegate.shutdown()
    }
  }
}

internal fun MockResponse.wrap(): mockwebserver3.MockResponse {
  val result = mockwebserver3.MockResponse.Builder()
  val copyFromWebSocketListener = webSocketListener

	natsserver "github.com/nats-io/nats-server/v2/test"
)

func TestNatsConnTLSCustomCA(t *testing.T) {
	s, opts := natsserver.RunServerWithConfig(filepath.Join("testdata", "contrib", "nats_tls.conf"))
	defer s.Shutdown()

	clientConfig := &NATSArgs{
		Enable: true,
		Address: xnet.Host{
			Name:      "localhost",
			Port:      (xnet.Port(opts.Port)),
			IsPortSet: true,
		},
		Subject:       "test",

    serializer = ExecutionSequencer.create();
    firstFuture = SettableFuture.create();
    firstCallable = new TestCallable(firstFuture);
  }

  @Override
  public void tearDown() throws Exception {
    executor.shutdown();
  }

  public void testCallableStartsAfterFirstFutureCompletes() {
    @SuppressWarnings({"unused", "nullness"})
    Future<?> possiblyIgnoredError = serializer.submitAsync(firstCallable, directExecutor());

  object FailHandshake : SocketPolicy

  /**
   * Shutdown the socket input after sending the response. For testing bad behavior.
   *
   * See [SocketPolicy] for reasons why this can cause test flakiness and how to avoid it.
   */
  object ShutdownInputAtEnd : SocketPolicy

  /**
   * Shutdown the socket output after sending the response. For testing bad behavior.
   *

# Events testen: Hochfahren – Herunterfahren

Wenn Sie in Ihren Tests Ihre Event-Handler (`startup` und `shutdown`) ausführen wollen, können Sie den `TestClient` mit einer `with`-Anweisung verwenden:

```Python hl_lines="9-12  20-24"
{!../../docs_src/app_testing/tutorial003.py!}