# 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_py39.py hl[9:15,18,27:28,30:32,41:43] *}

# 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] *}

# Testing a Database { #testing-a-database }

You can study about databases, SQL, and SQLModel in the <a href="https://sqlmodel.tiangolo.com/" class="external-link" target="_blank">SQLModel docs</a>. 🤓

There's a mini <a href="https://sqlmodel.tiangolo.com/tutorial/fastapi/" class="external-link" target="_blank">tutorial on using SQLModel with FastAPI</a>. ✨

# Probando WebSockets { #testing-websockets }

Puedes usar el mismo `TestClient` para probar WebSockets.

Para esto, usas el `TestClient` en un statement `with`, conectándote al WebSocket:

{* ../../docs_src/app_testing/tutorial002_py39.py hl[27:31] *}

/// note | Nota

# Testing Events: lifespan and startup - shutdown { #testing-events-lifespan-and-startup-shutdown }

When you need `lifespan` to run in your tests, you can use the `TestClient` with a `with` statement:

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


You can read more details about the ["Running lifespan in tests in the official Starlette documentation site."](https://www.starlette.dev/lifespan/#running-lifespan-in-tests)

# Testen mit Überschreibungen für Abhängigkeiten { #testing-dependencies-with-overrides }

## Abhängigkeiten beim Testen überschreiben { #overriding-dependencies-during-testing }

Es gibt einige Szenarien, in denen Sie beim Testen möglicherweise eine Abhängigkeit überschreiben möchten.

Sie möchten nicht, dass die ursprüngliche Abhängigkeit ausgeführt wird (und auch keine der möglicherweise vorhandenen Unterabhängigkeiten).

## Sobrepondo dependências durante os testes { #overriding-dependencies-during-testing }

Existem alguns cenários onde você deseje sobrepor uma dependência durante os testes.

Você não quer que a dependência original execute (e nenhuma das subdependências que você possa ter).

测试 WebSockets 也使用 `TestClient`。

为此，要在 `with` 语句中使用 `TestClient` 连接 WebSocket。

{* ../../docs_src/app_testing/tutorial002.py hl[27:31] *}

/// note | 笔记

更多细节详见 <a href="https://www.starlette.dev/testclient/#testing-websocket-sessions" class="external-link" target="_blank">Starlette 官档 - 测试 WebSockets</a>。

<module>
<source path="">
  <!-- Hack to keep collect from hiding collect.testing supersource: -->
  <exclude name="**/testing/**"/>
</source>

<!--
    We used to set this only for packages that had manual supersource. That
    worked everywhere that I know of except for one place: when running the GWT
    util.concurrent tests under Guava.

    The problem is that GWT responds poorly to two .gwt.xml files in the same
    Java package; see

이를 위해 `with` 문에서 `TestClient`를 사용하여 WebSocket에 연결합니다:

{* ../../docs_src/app_testing/tutorial002.py hl[27:31] *}

/// note | 참고

자세한 내용은 Starlette의 <a href="https://www.starlette.dev/testclient/#testing-websocket-sessions" class="external-link" target="_blank"> WebSocket 테스트</a>에 관한 설명서를 참고하시길 바랍니다.