### Add some custom `tags`, `responses`, and `dependencies` { #add-some-custom-tags-responses-and-dependencies }

We are not adding the prefix `/items` nor the `tags=["items"]` to each *path operation* because we added them to the `APIRouter`.

But we can still add _more_ `tags` that will be applied to a specific *path operation*, and also some extra `responses` specific to that *path operation*:

def main_route(callback_url: HttpUrl):
    pass  # pragma: no cover


client = TestClient(app)


def test_openapi_schema():
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == snapshot(
        {
            "openapi": "3.1.0",
            "info": {"title": "FastAPI", "version": "0.1.0"},
            "paths": {

    client = TestClient(app)
    response = client.get("/test1")
    assert response.status_code == 200
    assert response.json() == {"foo": "bar"}

    response = client.get("/test1", params={"var": "baz"})
    assert response.status_code == 200
    assert response.json() == {"foo": "baz"}

    response = client.get("/test2")
    assert response.status_code == 200
    assert response.json() == {"foo": "bar"}

from your test's `tearDown()`.

### API

#### MockResponse

Mock responses default to an empty response body and a `200` status code.
You can set a custom body with a string, input stream or byte array. Also
add headers with a fluent builder API.

### Java
```java
MockResponse response = new MockResponse.Builder()
    .addHeader("Content-Type", "application/json; charset=utf-8")

        detail: str

    app = FastAPI()

    with pytest.raises(PydanticV1NotSupportedError):

        @app.get(
            "/responses", response_model=None, responses={400: {"model": ErrorModelV1}}
        )
        def endpoint():  # pragma: no cover
            return {"ok": True}


def test_raises_pydantic_v1_model_in_union() -> None:
    class ModelV1A(BaseModel):
        name: str

    app = FastAPI()

    assert response.headers["x-fastapi-item-id"] == "foo"


def test_patch():
    response = client.patch("/items/foo", json={"name": "Foo"})
    assert response.status_code == 200, response.text
    assert response.json() == {"item_id": "foo", "item": {"name": "Foo", "price": None}}


def test_trace():
    response = client.request("trace", "/items/foo")
    assert response.status_code == 200, response.text

    route: Route?,
    response: Response,
  ): Request? {
    if (route == null) throw NullPointerException("route == null")
    responses += response
    routes += route
    if (!schemeMatches(response) || credential == null) return null
    val header =
      when (response.code) {
        407 -> "Proxy-Authorization"
        else -> "Authorization"
      }
    return response.request
      .newBuilder()

    response = client.post("/tuple-of-models/", json=data)
    assert response.status_code == 422, response.text

    data = [{"x": 1, "y": 2}]
    response = client.post("/tuple-of-models/", json=data)
    assert response.status_code == 422, response.text


def test_tuple_form_valid():
    response = client.post("/tuple-form/", data={"values": ("1", "2")})
    assert response.status_code == 200, response.text

from fastapi import APIRouter, Depends, HTTPException

from ..dependencies import get_token_header

router = APIRouter(
    prefix="/items",
    tags=["items"],
    dependencies=[Depends(get_token_header)],
    responses={404: {"description": "Not found"}},
)


fake_items_db = {"plumbus": {"name": "Plumbus"}, "gun": {"name": "Portal Gun"}}


@router.get("/")
async def read_items():
    return fake_items_db

{* ../../docs_src/path_operation_advanced_configuration/tutorial004_py310.py hl[17:27] *}

## 추가 응답 { #additional-responses }

*경로 처리*에 대해 `response_model`과 `status_code`를 선언하는 방법을 이미 보셨을 것입니다.

이는 *경로 처리*의 기본 응답에 대한 메타데이터를 정의합니다.

모델, 상태 코드 등과 함께 추가 응답도 선언할 수 있습니다.

이에 대한 문서의 전체 장이 있으니, [OpenAPI의 추가 응답](additional-responses.md)에서 읽어보세요.

## OpenAPI Extra { #openapi-extra }