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

from docs_src.header_params.tutorial003 import app

client = TestClient(app)


@pytest.mark.parametrize(
    "path,headers,expected_status,expected_response",
    [
        ("/items", None, 200, {"X-Token values": None}),
        ("/items", {"x-token": "foo"}, 200, {"X-Token values": ["foo"]}),
        (
            "/items",

```Python hl_lines="6-9"
{!../../../docs_src/background_tasks/tutorial001.py!}
```

## バックグラウンドタスクの追加

*path operations 関数* 内で、`.add_task()` メソッドを使用してタスク関数を *background tasks* オブジェクトに渡します。

```Python hl_lines="14"
{!../../../docs_src/background_tasks/tutorial001.py!}
```

`.add_task()` は以下の引数を受け取ります:

* バックグラウンドで実行されるタスク関数 (`write_notification`)。
* タスク関数に順番に渡す必要のある引数の列 (`email`)。

            """
        ),
    ] = None,
    deprecated: Annotated[
        Union[deprecated, str, bool, None],
        Doc(
            """
            Mark this parameter field as deprecated.

            It will affect the generated OpenAPI (e.g. visible at `/docs`).
            """
        ),
    ] = None,
    include_in_schema: Annotated[
        bool,

Starlette and **FastAPI** are based on <a href="https://anyio.readthedocs.io/en/stable/" class="external-link" target="_blank">AnyIO</a>, which makes them compatible with both Python's standard library <a href="https://docs.python.org/3/library/asyncio-task.html" class="external-link" target="_blank">asyncio</a> and <a href="https://trio.readthedocs.io/en/stable/" class="external-link" target="_blank">Trio</a>.

    * Interaktywne systemy dokumentacji.
    * Systemy automatycznego generowania kodu klienckiego, dla wielu języków.
* Dostarczy bezpośrednio 2 interaktywne dokumentacje webowe.

---

To dopiero początek, ale już masz mniej-więcej pojęcie jak to wszystko działa.

Spróbuj zmienić linijkę:

```Python
    return {"item_name": item.name, "item_id": item_id}
```

...z:

```Python

  url: https://github.com/Ventura94
- login: White-Mask
  count: 6
  avatarUrl: https://avatars.githubusercontent.com/u/31826970?u=8625355dc25ddf9c85a8b2b0b9932826c4c8f44c&v=4
  url: https://github.com/White-Mask
- login: mikeedjones
  count: 6
  avatarUrl: https://avatars.githubusercontent.com/u/4087139?u=cc4a242896ac2fcf88a53acfaf190d0fe0a1f0c9&v=4

  direction: ltr;
  display: inline-block;
}

a.external-link::after {
  /* \00A0 is a non-breaking space
        to make the mark be on the same line as the link
    */
  content: "\00A0[↪]";
}

a.internal-link::after {
  /* \00A0 is a non-breaking space
        to make the mark be on the same line as the link
    */
  content: "\00A0↪";
}

.shadow {
  box-shadow: 5px 5px 10px #999;
}

The sequence of execution before FastAPI 0.106.0 was like this diagram:

!!! tip "Tipp"

    response = client.get("/router-decorator-depends/?q=foo&skip=100&limit=200")
    assert response.status_code == 200
    assert response.json() == {"in": "router-decorator-depends"}


@pytest.mark.parametrize(
    "url,status_code,expected",
    [
        (
            "/main-depends/",
            200,
            {"in": "main-depends", "params": {"q": None, "skip": 5, "limit": 10}},
        ),