Pydantic tarafından kullanılanlar:

* [`email-validator`](https://github.com/JoshData/python-email-validator) - email doğrulaması için.

Starlette tarafından kullanılanlar:

* [`httpx`](https://www.python-httpx.org) - `TestClient` kullanmak istiyorsanız gereklidir.
* [`jinja2`](https://jinja.palletsprojects.com) - varsayılan template yapılandırmasını kullanmak istiyorsanız gereklidir.

from fastapi.testclient import TestClient

from .main import app

client = TestClient(app)


def test_read_main():
    response = client.get("/")
    assert response.status_code == 200

O `TestClient` faz algumas mágicas para invocar a aplicação FastAPI assíncrona em suas funções `def` normais, utilizando o pytest padrão. Porém a mágica não acontece mais quando nós estamos utilizando dentro de funções assíncronas. Ao executar os nossos testes de forma assíncrona, nós não podemos mais utilizar o `TestClient` dentro das nossas funções de teste.

from fastapi import FastAPI, Path, Query
from fastapi.testclient import TestClient

app = FastAPI()


@app.get("/int/{param:int}")
def int_convertor(param: int = Path()):
    return {"int": param}


@app.get("/float/{param:float}")
def float_convertor(param: float = Path()):
    return {"float": param}


@app.get("/path/{param:path}")
def path_convertor(param: str = Path()):
    return {"path": param}

from fastapi.testclient import TestClient

from .config import Settings
from .main import app, get_settings

client = TestClient(app)


def get_settings_override():
    return Settings(admin_email="******@****.***")


app.dependency_overrides[get_settings] = get_settings_override


def test_app():
    response = client.get("/info")
    data = response.json()
    assert data == {
        "app_name": "Awesome API",

Pydantic 使用：

* [`email-validator`](https://github.com/JoshData/python-email-validator) - 用于 email 校验。

Starlette 使用：

* [`httpx`](https://www.python-httpx.org) - 使用 `TestClient` 时需要。
* [`jinja2`](https://jinja.palletsprojects.com) - 使用默认模板配置时需要。
* [`python-multipart`](https://github.com/Kludex/python-multipart) - 使用 `request.form()` 支持表单<dfn title="将 HTTP 请求中的字符串转换为 Python 数据">「解析」</dfn>时需要。

Sie können denselben `TestClient` zum Testen von WebSockets verwenden.

Dazu verwenden Sie den `TestClient` in einer `with`-Anweisung, eine Verbindung zum WebSocket herstellend:

{* ../../docs_src/app_testing/tutorial002_py310.py hl[27:31] *}

/// note | Hinweis

Weitere Informationen finden Sie in Starlettes Dokumentation zum [Testen von WebSockets](https://www.starlette.dev/testclient/#testing-websocket-sessions).

Vous pouvez utiliser le même `TestClient` pour tester les WebSockets.

Pour cela, vous utilisez `TestClient` dans une instruction `with`, en vous connectant au WebSocket :

{* ../../docs_src/app_testing/tutorial002_py310.py hl[27:31] *}

/// note | Remarque

Pour plus de détails, consultez la documentation de Starlette sur le [test des WebSockets](https://www.starlette.dev/testclient/#testing-websocket-sessions).

from fastapi.testclient import TestClient

app = FastAPI()


async def response_status_setter(response: Response):
    response.status_code = 201


async def parent_dep(result=Depends(response_status_setter)):
    return result


@app.get("/", dependencies=[Depends(parent_dep)])
async def get_main():
    return {"msg": "Hello World"}


client = TestClient(app)

from typing import Annotated

from fastapi import Depends, FastAPI, Request
from fastapi.testclient import TestClient

from .utils import needs_py310


class Dep:
    def __call__(self, request: Request):
        return "test"


@needs_py310
def test_stringified_annotations():
    app = FastAPI()

    client = TestClient(app)

    @app.get("/test/")
    def call(test: Annotated[str, Depends(Dep())]):