def test_response_dependency_chain():
    """Response dependency should work in a chain of dependencies."""
    app = FastAPI()

    def first_modifier(response: Response) -> Response:
        response.headers["X-First"] = "1"
        return response

    def second_modifier(
        response: Annotated[Response, Depends(first_modifier)],
    ) -> Response:
        response.headers["X-Second"] = "2"
        return response

                "input": "foo",
            }
        ]
    }


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

                "input": 0,
                "ctx": {"gt": 0},
            },
        ],
    }


def test_openapi_schema(client: TestClient):
    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": {

	// execute the http request to fetch object.
	response, err = s.client.Do(request)
	c.Assert(err, nil)
	// assert the http response status code.
	c.Assert(response.StatusCode, http.StatusOK)

	var buffer bytes.Buffer
	// extract the body of the response.
	responseBody, err := io.ReadAll(response.Body)
	c.Assert(err, nil)
	// assert the http response body content.

Nota que las *path operations* definen los modelos que usan para el payload del request y el payload del response, usando los modelos `Item` y `ResponseMessage`.

### Documentación de la API { #api-docs }

Si vas a `/docs`, verás que tiene los **esquemas** para los datos a enviar en requests y recibir en responses:

<img src="/img/tutorial/generate-clients/image01.png">

client = TestClient(app)


def test_function_scope() -> None:
    response = client.get("/function-scope")
    assert response.status_code == 200
    data = response.json()
    assert data["is_open"] is False


def test_request_scope() -> None:
    response = client.get("/request-scope")
    assert response.status_code == 200
    data = response.json()
    assert data["is_open"] is True

Beachten Sie, dass die *Pfadoperationen* die Modelle definieren, die sie für die <abbr title="Request – Anfrage: Daten, die der Client zum Server sendet">Request</abbr>- und <abbr title="Response – Antwort: Daten, die der Server zum anfragenden Client zurücksendet">Response</abbr>-<abbr title="Die eigentlichen Nutzdaten, abzüglich der Metadaten">Payload</abbr> verwenden, indem sie die Modelle `Item` und `ResponseMessage` verwenden.

### API-Dokumentation { #api-docs }

- Kube-apiserver: redirect responses are no longer returned from backends by default. Set `--aggregator-reject-forwarding-redirect=false` to continue forwarding redirect responses. ([#112193](https://github.com/kubernetes/kubernetes/pull/112193), [@jindijamie](https://github.com/jindijamie)) [SIG API Machinery and Testing]

Aber FastAPI unterstützt auf die gleiche Weise auch die Verwendung von [`dataclasses`](https://docs.python.org/3/library/dataclasses.html):

	// Must reconnect
	errFatal(remoteConn.WaitForConnect(t.Context()))

	stream, err := remoteConn.NewStream(t.Context(), handlerTest2, []byte(testPayload))
	errFatal(err)
	go func() {
		for resp := range stream.responses {
			t.Log("Resp:", resp, err)
		}
		gotResp <- struct{}{}
	}()

	<-gotCall
	remote.debugMsg(debugKillOutbound)
	local.debugMsg(debugKillOutbound)
	errFatal(remoteConn.WaitForConnect(t.Context()))