assertFalse(testExecutor.isTerminated());
    mock.assertLastMethodCalled("isTerminated");
    assertFalse(testExecutor.isShutdown());
    mock.assertLastMethodCalled("isShutdown");
    testExecutor.shutdown();
    mock.assertLastMethodCalled("shutdown");
    List<Runnable> list = testExecutor.shutdownNow();
    mock.assertLastMethodCalled("shutdownNow");
    assertEquals(ImmutableList.of(), list);
  }

### `shutdown` event { #shutdown-event }

To add a function that should be run when the application is shutting down, declare it with the event `"shutdown"`:

{* ../../docs_src/events/tutorial002_py39.py hl[6] *}

Here, the `shutdown` event handler function will write a text line `"Application shutdown"` to a file `log.txt`.

/// info

	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",

# Testando eventos: lifespan e inicialização - encerramento { #testing-events-lifespan-and-startup-shutdown }

Quando você precisa que o `lifespan` seja executado em seus testes, você pode utilizar o `TestClient` com a instrução `with`:

{* ../../docs_src/app_testing/tutorial004_py39.py hl[9:15,18,27:28,30:32,41:43] *}

  /** Simple same thread listening executor service that doesn't handle shutdown. */
  private static class TestListeningExecutorService extends AbstractListeningExecutorService {

    @Override
    public void execute(Runnable runnable) {
      assertThat(runnable).isInstanceOf(TrustedListenableFutureTask.class);
      runnable.run();
    }

    @Override
    public void shutdown() {}

    @Override
    public List<Runnable> shutdownNow() {

    delegate.start(inetAddress, port)
  }

  @Synchronized
  @Throws(IOException::class)
  fun shutdown() {
    delegate.close()
  }

  @Synchronized override fun after() {
    try {
      shutdown()
    } catch (e: IOException) {
      logger.log(Level.WARNING, "MockWebServer shutdown failed", e)
    }
  }

  override fun toString(): String = delegate.toString()

    }

    @Override
    public final boolean isShutdown() {
      return delegate.isShutdown();
    }

    @Override
    public final boolean isTerminated() {
      return delegate.isTerminated();
    }

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

    @Override
    public final List<Runnable> shutdownNow() {

### Evento `shutdown` { #shutdown-event }

Para adicionar uma função que deve ser executada quando a aplicação estiver encerrando, declare-a com o evento `"shutdown"`:

{* ../../docs_src/events/tutorial002_py39.py hl[6] *}

Aqui, a função de manipulador do evento `shutdown` escreverá uma linha de texto `"Application shutdown"` no arquivo `log.txt`.

/// info | Informação

      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

# Тестирование событий: lifespan и startup - shutdown { #testing-events-lifespan-and-startup-shutdown }

Если вам нужно, чтобы `lifespan` выполнялся в ваших тестах, вы можете использовать `TestClient` вместе с оператором `with`:

{* ../../docs_src/app_testing/tutorial004_py39.py hl[9:15,18,27:28,30:32,41:43] *}