oauth2_scheme = OAuth2AuthorizationCodeBearer(
    authorizationUrl="authorize",
    tokenUrl="token",
    description="OAuth2 Code Bearer",
    auto_error=True,
)


@app.get("/items/")
async def read_items(token: Optional[str] = Security(oauth2_scheme)):
    return {"token": token}


client = TestClient(app)


def test_no_token():
    response = client.get("/items")

from fastapi.security import OAuth2PasswordBearer
from fastapi.testclient import TestClient

app = FastAPI()

oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/token", auto_error=False)


@app.get("/items/")
async def read_items(token: Optional[str] = Security(oauth2_scheme)):
    if token is None:
        return {"msg": "Create an account first"}
    return {"token": token}


client = TestClient(app)


def test_no_token():

)
def create_item_for_user(user_id: int, item: schemas.ItemCreate):
    return crud.create_user_item(item=item, user_id=user_id)


@app.get("/items/", response_model=List[schemas.Item], dependencies=[Depends(get_db)])
def read_items(skip: int = 0, limit: int = 100):
    items = crud.get_items(skip=skip, limit=limit)
    return items


@app.get(
    "/slowusers/", response_model=List[schemas.User], dependencies=[Depends(get_db)]
)

from typing import List

from dirty_equals import IsDict
from fastapi import FastAPI, Query
from fastapi.testclient import TestClient

app = FastAPI()


@app.get("/items/")
def read_items(q: List[int] = Query(default=None)):
    return {"q": q}


client = TestClient(app)


def test_multi_query():
    response = client.get("/items/?q=5&q=6")
    assert response.status_code == 200, response.text

    # authenticate user
    return User()


@app.get("/items/")
def read_items(user: User = Depends(get_current_user)):
    ...


@app.post("/items/")
def create_item(*, user: User = Depends(get_current_user), item: Item):
    ...


@app.get("/items/{item_id}")
def read_item(*, user: User = Depends(get_current_user), item_id: int):
    ...

from typing_extensions import Annotated

from .utils import needs_py310


def get_client():
    app = FastAPI()
    with pytest.warns(DeprecationWarning):

        @app.post("/items/")
        async def read_items(
            q: Annotated[str | None, Form(regex="^fixedquery$")] = None,
        ):
            if q:
                return f"Hello {q}"
            else:
                return "Hello World"

from typing_extensions import Annotated

from .utils import needs_py310


def get_client():
    app = FastAPI()
    with pytest.warns(DeprecationWarning):

        @app.get("/items/")
        async def read_items(
            q: Annotated[str | None, Query(regex="^fixedquery$")] = None,
        ):
            if q:
                return f"Hello {q}"
            else:
                return "Hello World"

* 🤙 👆 🔗 ("☑") 🔢 ⏮️ ☑ 🔢.
* 🤚 🏁 ⚪️➡️ 👆 🔢.
* 🛠️ 👈 🏁 🔢 👆 *➡ 🛠️ 🔢*.

```mermaid
graph TB

common_parameters(["common_parameters"])
read_items["/items/"]
read_users["/users/"]

common_parameters --> read_items
common_parameters --> read_users
```

👉 🌌 👆 ✍ 🔗 📟 🕐 & **FastAPI** ✊ 💅 🤙 ⚫️ 👆 *➡ 🛠️*.

/// check

* 依存関係（"dependable"）関数を正しいパラメータで呼び出します。
* 関数の結果を取得します。
* *path operation関数*のパラメータにその結果を代入してください。

```mermaid
graph TB

common_parameters(["common_parameters"])
read_items["/items/"]
read_users["/users/"]

common_parameters --> read_items
common_parameters --> read_users
```

この方法では、共有されるコードを一度書き、**FastAPI** が*path operations*のための呼び出しを行います。

/// check | "確認"

* Назначении результата в параметр в вашей *функции обработки пути*.

```mermaid
graph TB

common_parameters(["common_parameters"])
read_items["/items/"]
read_users["/users/"]

common_parameters --> read_items
common_parameters --> read_users
```

Таким образом, вы пишете общий код один раз, и **FastAPI** позаботится о его вызове для ваших *операций с путями*.