assert response.json() == {"name": "widget", "price": 9.99}


def test_ujson_response_emits_deprecation_warning():
    with pytest.warns(FastAPIDeprecationWarning, match="UJSONResponse is deprecated"):

    "and https://fastapi.tiangolo.com/tutorial/response-model/",
    category=FastAPIDeprecationWarning,
    stacklevel=2,
)
class UJSONResponse(JSONResponse):
    """JSON response using the ujson library to serialize data to JSON.

    **Deprecated**: `UJSONResponse` is deprecated. FastAPI now serializes data
    directly to JSON bytes via Pydantic when a return type or response model is

```python
from fastapi.responses import (
    FileResponse,
    HTMLResponse,
    JSONResponse,
    ORJSONResponse,
    PlainTextResponse,
    RedirectResponse,
    Response,
    StreamingResponse,
    UJSONResponse,
)
```

## FastAPI Responses

There were a couple of custom FastAPI response classes that were intended to optimize JSON performance.

    "pillow >=11.3.0",
    "python-slugify >=8.0.4",
    "pyyaml >=5.3.1,<7.0.0",
    "typer >=0.21.1",
]
docs-tests = [
    "httpx >=0.23.0,<1.0.0",
    "ruff >=0.14.14",
    # For UJSONResponse
    "ujson >=5.8.0",
    # For ORJSONResponse
    "orjson >=3.9.3",
]
github-actions = [
    "httpx >=0.27.0,<1.0.0",
    "pydantic >=2.9.0,<3.0.0",
    "pydantic-settings >=2.1.0,<3.0.0",

    item = InternalItem(
        name="Foo", description="A very nice Item", secret_key="supersecret"
    )
    return item
```

## Performance

Do not use `ORJSONResponse` or `UJSONResponse`, they are deprecated.

Instead, declare a return type or response model. Pydantic will handle the data serialization on the Rust side.

## Including Routers

Zusätzliche optionale FastAPI-Abhängigkeiten:

* [`orjson`](https://github.com/ijl/orjson) – erforderlich, wenn Sie `ORJSONResponse` verwenden möchten.
* [`ujson`](https://github.com/esnme/ultrajson) – erforderlich, wenn Sie `UJSONResponse` verwenden möchten.

## Lizenz { #license }

* [`orjson`](https://github.com/ijl/orjson) - потрібно, якщо ви хочете використовувати `ORJSONResponse`.
* [`ujson`](https://github.com/esnme/ultrajson) - потрібно, якщо ви хочете використовувати `UJSONResponse`.

## Ліцензія { #license }

* [`orjson`](https://github.com/ijl/orjson) — обязателен, если вы хотите использовать `ORJSONResponse`.
* [`ujson`](https://github.com/esnme/ultrajson) — обязателен, если вы хотите использовать `UJSONResponse`.

## Лицензия { #license }

추가 선택적 FastAPI 의존성:

* [`orjson`](https://github.com/ijl/orjson) - `ORJSONResponse`를 사용하려면 필요.
* [`ujson`](https://github.com/esnme/ultrajson) - `UJSONResponse`를 사용하려면 필요.

## 라이센스 { #license }

额外的 FastAPI 可选依赖：

* [`orjson`](https://github.com/ijl/orjson) - 使用 `ORJSONResponse` 时需要。
* [`ujson`](https://github.com/esnme/ultrajson) - 使用 `UJSONResponse` 时需要。

## 许可协议 { #license }