"time"

	"github.com/klauspost/compress/gzip"
)

// ResponseRecorder - is a wrapper to trap the http response
// status code and to record the response body
type ResponseRecorder struct {
	http.ResponseWriter
	io.ReaderFrom
	StatusCode int
	// Log body of 4xx or 5xx responses
	LogErrBody bool
	// Log body of all responses
	LogAllBody bool

	ttfbHeader time.Duration
	ttfbBody   time.Duration

	StartTime time.Time

    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

E as ferramentas também ficarão felizes porque `RedirectResponse` e ​​`JSONResponse` são subclasses de `Response`, então a anotação de tipo está correta.

### Anote uma subclasse de Response { #annotate-a-response-subclass }

Você também pode usar uma subclasse de `Response` na anotação de tipo:

O middleware responde a dois tipos específicos de solicitação HTTP...

### Requisições CORS pré-voo (preflight) { #cors-preflight-requests }

Estas são quaisquer solicitações `OPTIONS` com cabeçalhos `Origin` e `Access-Control-Request-Method`.

* `expose_headers` - Indicate any response headers that should be made accessible to the browser. Defaults to `[]`.
* `max_age` - Sets a maximum time in seconds for browsers to cache CORS responses. Defaults to `600`.

The middleware responds to two particular types of HTTP request...

### CORS preflight requests { #cors-preflight-requests }

<img src="/img/tutorial/websockets/image01.png">

Puedes escribir mensajes en el cuadro de entrada y enviarlos:

<img src="/img/tutorial/websockets/image02.png">

Y tu aplicación **FastAPI** con WebSockets responderá de vuelta:

<img src="/img/tutorial/websockets/image03.png">

Puedes enviar (y recibir) muchos mensajes:

<img src="/img/tutorial/websockets/image04.png">

Y todos usarán la misma conexión WebSocket.

    response = client.get("/users")
    assert response.status_code == 200, response.text
    assert response.json() == [{"user_id": "u1"}, {"user_id": "u2"}]


def test_get_user():
    """Check that /users/{user_id} returns expected data"""
    response = client.get("/users/abc123")
    assert response.status_code == 200, response.text
    assert response.json() == {"user_id": "abc123"}

    client = TestClient(app)
    response = client.get(path, headers=headers)
    assert response.status_code == expected_status
    assert response.json() == expected_response


def test_hidden_path():
    client = TestClient(app)
    response = client.get("/hidden_path/hidden_path")
    assert response.status_code == 200
    assert response.json() == {"hidden_path": "hidden_path"}

def test_call_api():
    response = client.post("/examples/", json={"data": "example1"})
    assert response.status_code == 200, response.text

    response = client.get("/path_examples/foo")
    assert response.status_code == 200, response.text

    response = client.get("/query_examples/")
    assert response.status_code == 200, response.text

    response = client.get("/header_examples/")

    JSON bytes via Pydantic's dump_json and never calls json.dumps."""
    with patch(
        "starlette.responses.json.dumps", wraps=__import__("json").dumps
    ) as mock_dumps:
        response = client.get("/default")
    assert response.status_code == 200
    assert response.json() == {"name": "widget", "price": 9.99}
    mock_dumps.assert_not_called()


def test_explicit_response_class_uses_json_dumps():