import pytest
from dirty_equals import IsDict
from fastapi.testclient import TestClient

from ...utils import needs_py310


@pytest.fixture(name="client")
def get_client():
    from docs_src.security.tutorial003_an_py310 import app

    client = TestClient(app)
    return client


@needs_py310
def test_login(client: TestClient):
    response = client.post("/token", data={"username": "johndoe", "password": "secret"})

import pytest
from dirty_equals import IsDict
from fastapi.testclient import TestClient

from ...utils import needs_py39


@pytest.fixture(name="client")
def get_client():
    from docs_src.request_files.tutorial001_an_py39 import app

    client = TestClient(app)
    return client


@needs_py39
def test_post_form_no_body(client: TestClient):
    response = client.post("/files/")

import pytest
from dirty_equals import IsDict
from fastapi.testclient import TestClient

from tests.utils import needs_py39


@pytest.fixture(name="client")
def get_client():
    from docs_src.request_form_models.tutorial001_an_py39 import app

    client = TestClient(app)
    return client


@needs_py39
def test_post_body_form(client: TestClient):
    response = client.post("/login/", data={"username": "Foo", "password": "secret"})

//// tab | Python 3.10+

```Python hl_lines="13  15  22  25"
{!> ../../docs_src/background_tasks/tutorial002_an_py310.py!}
```

////

//// tab | Python 3.9+

```Python hl_lines="13  15  22  25"
{!> ../../docs_src/background_tasks/tutorial002_an_py39.py!}
```

////

//// tab | Python 3.8+

## `Body` 额外参数

你可以通过传递额外信息给 `Field` 同样的方式操作`Path`, `Query`, `Body`等。

比如，你可以将请求体的一个 `example` 传递给 `Body`:

//// tab | Python 3.10+

```Python hl_lines="22-27"
{!> ../../docs_src/schema_extra_example/tutorial003_an_py310.py!}
```

////

//// tab | Python 3.9+

```Python hl_lines="22-27"
{!> ../../docs_src/schema_extra_example/tutorial003_an_py39.py!}
```

////

//// tab | Python 3.8+

* `Path`
* `Query`

Diese funktionieren auf die gleiche Weise wie für andere FastAPI-Endpunkte/*Pfadoperationen*:

//// tab | Python 3.10+

```Python hl_lines="68-69  82"
{!> ../../docs_src/websockets/tutorial002_an_py310.py!}
```

////

//// tab | Python 3.9+

```Python hl_lines="68-69  82"
{!> ../../docs_src/websockets/tutorial002_an_py39.py!}
```

////

//// tab | Python 3.8+

        pytest.param("tutorial002_py310", marks=needs_py310),
        "tutorial002_an",
        pytest.param("tutorial002_an_py39", marks=needs_py39),
        pytest.param("tutorial002_an_py310", marks=needs_py310),
    ],
)
def get_client(request: pytest.FixtureRequest):
    clear_sqlmodel()
    # TODO: remove when updating SQL tutorial to use new lifespan API

**FastAPI** knows what to do in each case and how to reuse the same object, so that all the background tasks are merged together and are run in the background afterwards:


{* ../../docs_src/background_tasks/tutorial002_an_py310.py hl[13,15,22,25] *}


In this example, the messages will be written to the `log.txt` file *after* the response is sent.

If there was a query in the request, it will be written to the log in a background task.

```Python hl_lines="9  17"
{!> ../../docs_src/request_files/tutorial001_02.py!}
```

////

//// tab | 🐍 3️⃣.1️⃣0️⃣ & 🔛

```Python hl_lines="7  14"
{!> ../../docs_src/request_files/tutorial001_02_py310.py!}
```

////

## `UploadFile` ⏮️ 🌖 🗃

👆 💪 ⚙️ `File()` ⏮️ `UploadFile`, 🖼, ⚒ 🌖 🗃:

```Python hl_lines="13"
{!../../docs_src/request_files/tutorial001_03.py!}
```

* `Header`
* `Path`
* `Query`

They work the same way as for other FastAPI endpoints/*path operations*:

//// tab | Python 3.10+

```Python hl_lines="68-69  82"
{!> ../../docs_src/websockets/tutorial002_an_py310.py!}
```

////

//// tab | Python 3.9+

```Python hl_lines="68-69  82"
{!> ../../docs_src/websockets/tutorial002_an_py39.py!}
```

////

//// tab | Python 3.8+