assert response.json() == {
        "openapi": "3.1.0",
        "info": {"title": "FastAPI", "version": "0.1.0"},
        "paths": {
            "/items/": {
                "get": {
                    "summary": "Read Items",
                    "operationId": "read_items_items__get",
                    "parameters": [
                        {
                            "required": True,

from fastapi.responses import JSONResponse

app = FastAPI()

items = {"foo": {"name": "Fighters", "size": 6}, "bar": {"name": "Tenders", "size": 3}}


@app.put("/items/{item_id}")
async def upsert_item(
    item_id: str,
    name: Union[str, None] = Body(default=None),
    size: Union[int, None] = Body(default=None),
):
    if item_id in items:
        item = items[item_id]
        item["name"] = name
        item["size"] = size

В этом случае, если вы сделаете запрос:

```
http://127.0.0.1:8000/items/foo?short=1
```

или

```
http://127.0.0.1:8000/items/foo?short=True
```

или

```
http://127.0.0.1:8000/items/foo?short=true
```

или

```
http://127.0.0.1:8000/items/foo?short=on
```

или

```
http://127.0.0.1:8000/items/foo?short=yes
```

client = TestClient(app)


def test_read_item():
    response = client.get("/items/foo", headers={"X-Token": "coneofsilence"})
    assert response.status_code == 200
    assert response.json() == {
        "id": "foo",
        "title": "Foo",
        "description": "There goes my hero",
    }


def test_read_item_bad_token():
    response = client.get("/items/foo", headers={"X-Token": "hailhydra"})
    assert response.status_code == 400

    return client


def test_hidden_query(client: TestClient):
    response = client.get("/items?hidden_query=somevalue")
    assert response.status_code == 200, response.text
    assert response.json() == {"hidden_query": "somevalue"}


def test_no_hidden_query(client: TestClient):
    response = client.get("/items")
    assert response.status_code == 200, response.text
    assert response.json() == {"hidden_query": "Not found"}

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


class OtherItem(BaseModel):
    price: int


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


client = TestClient(app)


def test_post_other_item():
    response = client.post("/items/", json={"price": 100})
    assert response.status_code == 200, response.text
    assert response.json() == {"item": {"price": 100}}

)
async def read_item_name(item_id: str):
    return items[item_id]


@app.get("/items/{item_id}/public", response_model=Item, response_model_exclude=["tax"])
async def read_item_public_data(item_id: str):

@pytest.mark.parametrize(
    ("path", "expected_json"),
    [
        (
            "/items/",
            [{"item_name": "Foo"}, {"item_name": "Bar"}, {"item_name": "Baz"}],
        ),
        (
            "/items/?skip=1",
            [{"item_name": "Bar"}, {"item_name": "Baz"}],
        ),
        (
            "/items/?skip=1&limit=1",
            [{"item_name": "Bar"}],
        ),
    ],
)

app = FastAPI()


class Item(BaseModel):
    name: str
    description: str


items = [
    {"name": "Foo", "description": "There comes my hero"},
    {"name": "Red", "description": "It's my aeroplane"},
]


@app.get("/items/", response_model=list[Item])
async def read_items():

        Field(discriminator="value"),
    ]

    @app.post("/items/")
    def save_union_body_discriminator(
        item: Item, q: Annotated[str, Field(description="Query string")]
    ) -> dict[str, Any]:
        return {"item": item}

    client = TestClient(app)
    response = client.post("/items/?q=first", json={"value": "first", "price": 100})
    assert response.status_code == 200, response.text