=== "Python 3.10+"

    ```Python
    {!> ../../../docs_src/app_testing/app_b_an_py310/main.py!}
    ```

=== "Python 3.9+"

    ```Python
    {!> ../../../docs_src/app_testing/app_b_an_py39/main.py!}
    ```

=== "Python 3.8+"

    ```Python
    {!> ../../../docs_src/app_testing/app_b_an/main.py!}
    ```

=== "Python 3.10+ non-Annotated"

    !!! tip

You could want to set up a different database for testing, rollback the data after the tests, pre-fill it with some testing data, etc.

The main idea is exactly the same you saw in that previous chapter.

## Add tests for the SQL app

# Testing WebSockets

You can use the same `TestClient` to test WebSockets.

For this, you use the `TestClient` in a `with` statement, connecting to the WebSocket:

```Python hl_lines="27-31"
{!../../../docs_src/app_testing/tutorial002.py!}
```

!!! note

# Testing Events: startup - shutdown

When you need your event handlers (`startup` and `shutdown`) to run in your tests, you can use the `TestClient` with a `with` statement:

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

# 测试事件：启动 - 关闭

使用 `TestClient` 和 `with` 语句，在测试中运行事件处理器（`startup` 与 `shutdown`）。

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

## Upgrading the FastAPI versions

You should add tests for your app.

With **FastAPI** it's very easy (thanks to Starlette), check the docs: [Testing](../tutorial/testing.md){.internal-link target=_blank}

After you have tests, then you can upgrade the **FastAPI** version to a more recent one, and make sure that all your code is working correctly by running your tests.

## Mise à jour des versions FastAPI

Vous devriez tester votre application.

Avec **FastAPI** c'est très facile (merci à Starlette), consultez la documentation : [Testing](../tutorial/testing.md){.internal-link target=_blank}

* Einfache Python-Integration mit **Jupyter-Kerneln** für Remote- oder In-Docker-Entwicklung mit Erweiterungen...

Konkret geht es darum, Uvicorn, Starlette und FastAPI miteinander zu vergleichen (neben vielen anderen Tools).

Je einfacher das Problem, welches durch das Tool gelöst wird, desto besser ist die Performanz. Und die meisten Benchmarks testen nicht die zusätzlichen Funktionen, welche das Tool bietet.

Die Hierarchie ist wie folgt:

* **Uvicorn**: ein ASGI-Server
    * **Starlette**: (verwendet Uvicorn) ein Web-Mikroframework

fastapi>=0.45.0,<0.46.0
```

💔 🔀 &amp; 🆕 ⚒ 🚮 "🇺🇲" ⏬.

!!! tip
     "🇺🇲" 🔢 🖕, 🖼, `0.2.3`, 🇺🇲 ⏬ `2`.

## ♻ FastAPI ⏬

👆 🔜 🚮 💯 👆 📱.

⏮️ **FastAPI** ⚫️ 📶 ⏩ (👏 💃), ✅ 🩺: [🔬](../tutorial/testing.md){.internal-link target=_blank}

⏮️ 👆 ✔️ 💯, ⤴️ 👆 💪 ♻ **FastAPI** ⏬ 🌖 ⏮️ 1️⃣, &amp; ⚒ 💭 👈 🌐 👆 📟 👷 ☑ 🏃 👆 💯.

🚥 🌐 👷, ⚖️ ⏮️ 👆 ⚒ 💪 🔀, &amp; 🌐 👆 💯 🚶‍♀️, ⤴️ 👆 💪 📌 👆 `fastapi` 👈 🆕 ⏮️ ⏬.

## 🔃 💃