return
      }
    }
    throw AssertionError("No such job: $url")
  }

  override fun shutdown() {
    shutdown = true
  }

  override fun shutdownNow(): List<Runnable> = throw UnsupportedOperationException()

  override fun isShutdown(): Boolean = shutdown

  override fun isTerminated(): Boolean = throw UnsupportedOperationException()

  override fun awaitTermination(

        assertEquals(listener, jobExecutor.shutdownListener);

        // Verify listener is called on shutdown
        jobExecutor.shutdown();
        assertTrue(shutdownCalled.get());
    }

    @Test
    public void test_addShutdownListener_replace() {
        // Test replacing shutdown listener
        AtomicInteger callCount = new AtomicInteger(0);
        ShutdownListener listener1 = new ShutdownListener() {

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

Щоб додати функцію, яку слід виконати, коли застосунок вимикається, оголосіть її з подією `"shutdown"`:

{* ../../docs_src/events/tutorial002_py310.py hl[6] *}

Тут функція-обробник події `shutdown` запише текстовий рядок `"Application shutdown"` у файл `log.txt`.

/// info | Інформація

    /**
     * Initiates shutdown of the job executor.
     * This method notifies the shutdown listener to perform cleanup operations.
     */
    public void shutdown() {
        shutdownListener.onShutdown();
    }

    /**
     * Adds a shutdown listener to be notified when the executor is shutting down.
     *
     * @param listener the shutdown listener to add
     */

# 測試事件：lifespan 與 startup - shutdown { #testing-events-lifespan-and-startup-shutdown }

當你需要在測試中執行 lifespan（生命週期）時，你可以使用 TestClient 並搭配 with 陳述式：

{* ../../docs_src/app_testing/tutorial004_py310.py hl[9:15,18,27:28,30:32,41:43] *}

你可以閱讀更多細節：[在測試中執行 lifespan](https://www.starlette.dev/lifespan/#running-lifespan-in-tests)（Starlette 官方文件）。

對於已棄用的 `startup` 和 `shutdown` 事件，你可以這樣使用 TestClient：

### `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_py310.py hl[6] *}

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

/// info

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

Um eine Funktion hinzuzufügen, die beim Shutdown der Anwendung ausgeführt werden soll, deklarieren Sie sie mit dem Event `shutdown`:

{* ../../docs_src/events/tutorial002_py310.py hl[6] *}

Hier schreibt die `shutdown`-Eventhandler-Funktion eine Textzeile `"Application shutdown"` in eine Datei `log.txt`.

/// info | Info

   * message buffer (16 MiB) will be rejected and trigger a [graceful shutdown][close] of this web
   * socket. This method returns false in that case, and in any other case where this web socket is
   * closing, closed, or canceled.
   *
   * This method returns immediately.
   */
  fun send(bytes: ByteString): Boolean

  /**
   * Attempts to initiate a graceful shutdown of this web socket. Any already-enqueued messages will

# Events testen: Lifespan und Startup – Shutdown { #testing-events-lifespan-and-startup-shutdown }

Wenn Sie `lifespan` in Ihren Tests ausführen müssen, können Sie den `TestClient` mit einer `with`-Anweisung verwenden:

{* ../../docs_src/app_testing/tutorial004_py310.py hl[9:15,18,27:28,30:32,41:43] *}

    ExecutorService service = mock(ExecutorService.class);
    application.addDelayedShutdownHook(service, 2, SECONDS);
    verify(service, never()).shutdown();
    application.shutdown();
    InOrder shutdownFirst = inOrder(service);
    shutdownFirst.verify(service).shutdown();
    shutdownFirst.verify(service).awaitTermination(2, SECONDS);
  }