from fastapi.testclient import TestClient
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: Optional[str] = None


class ExtendedItem(Item):
    age: int


@app.post("/items/")
def save_union_different_body(item: Union[ExtendedItem, Item]):
    return {"item": item}


client = TestClient(app)


def test_post_extended_item():

///

## Порядок выполнения нескольких middleware { #multiple-middleware-execution-order }

Когда вы добавляете несколько middleware с помощью декоратора `@app.middleware()` или метода `app.add_middleware()`, каждое новое middleware оборачивает приложение, формируя стек. Последнее добавленное middleware — самое внешнее (*outermost*), а первое — самое внутреннее (*innermost*).

from fastapi import FastAPI, Query

app = FastAPI()


@app.get("/items/")
async def read_items(q: str = Query(min_length=3)):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})

Here you'll see how to serve those files yourself, in the same FastAPI app, and configure the docs to use them.

### Project file structure { #project-file-structure }

Let's say your project file structure looks like this:

```
.
├── app
│   ├── __init__.py
│   ├── main.py
```

Bu bir **yol operasyonu dekoratörüdür**.

///

Ayrıca diğer operasyonları da kullanabilirsiniz:

* `@app.post()`
* `@app.put()`
* `@app.delete()`

Daha az kullanılanları da kullanabilirsiniz:

* `@app.options()`
* `@app.head()`
* `@app.patch()`
* `@app.trace()`

/// tip | İpucu

Her işlemi (HTTP metod) istediğiniz gibi kullanmakta özgürsünüz.

from fastapi import FastAPI, Query

app = FastAPI()


@app.get("/items/")
async def read_items(q: str = Query(default="fixedquery", min_length=3)):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})

Service metadata: name: chart-1640120023-minio-console namespace: "minio" labels: app: minio chart: minio-3.4.2 release: chart-1640120023 heritage: Helm spec: type: ClusterIP ports: - name: http port: 9001 protocol: TCP targetPort: 9001 selector: app: minio release: chart-1640120023 --- # Source: minio/templates/service.yaml apiVersion: v1 kind: Service metadata: name: chart-1640120023-minio namespace: "minio" labels: app: minio chart: minio-3.4.2 release: chart-1640120023 heritage: Helm monitoring:...

from fastapi import FastAPI, Response

app = FastAPI()


@app.post("/cookie-and-object/")
def create_cookie(response: Response):
    response.set_cookie(key="fakesession", value="fake-cookie-session-value")

from fastapi import FastAPI

app = FastAPI()


@app.get("/items/{item_id}")
async def read_user_item(
    item_id: str, needy: str, skip: int = 0, limit: int | None = None
):
    item = {"item_id": item_id, "needy": needy, "skip": skip, "limit": limit}

        "400": {"description": "Error with str"},
        "5XX": {"model": ResponseModel},
        "default": {"model": ResponseModel},
    },
)
async def d():
    return "d"


app.include_router(router)


client = TestClient(app)


def test_a():
    response = client.get("/a")
    assert response.status_code == 200, response.text
    assert response.json() == "a"


def test_b():