If an incoming request does not validate correctly then a `400` response will be sent.

## `GZipMiddleware` { #gzipmiddleware }

Handles GZip responses for any request that includes `"gzip"` in the `Accept-Encoding` header.

The middleware will handle both standard and streaming responses.

{* ../../docs_src/advanced_middleware/tutorial003_py39.py hl[2,6] *}

    return {"message": "Hello World"}


client = TestClient(app)


def test_app():
    response = client.get("/foo")
    assert response.status_code == 200, response.text


def test_openapi_schema():
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == snapshot(
        {
            "openapi": "3.1.0",

    assert response.json() == {"filename": "test.txt"}


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

def test_read_item_name(client: TestClient):
    response = client.get("/items/bar/name")
    assert response.status_code == 200, response.text
    assert response.json() == {"name": "Bar", "description": "The Bar fighters"}


def test_read_item_public_data(client: TestClient):
    response = client.get("/items/bar/public")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "name": "Bar",

def test_read_item_name(client: TestClient):
    response = client.get("/items/bar/name")
    assert response.status_code == 200, response.text
    assert response.json() == {"name": "Bar", "description": "The Bar fighters"}


def test_read_item_public_data(client: TestClient):
    response = client.get("/items/bar/public")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "name": "Bar",

def test_security_http_base():
    response = client.get("/users/me", headers={"Authorization": "Other foobar"})
    assert response.status_code == 200, response.text
    assert response.json() == {"scheme": "Other", "credentials": "foobar"}


def test_security_http_base_no_credentials():
    response = client.get("/users/me")
    assert response.status_code == 401, response.text
    assert response.json() == {"detail": "Not authenticated"}

        # Delete a hero
        response = client.delete(f"/heroes/{hero_id}")
        assert response.status_code == 200, response.text
        assert response.json() == snapshot({"ok": True})

        # The hero is no longer found
        response = client.get(f"/heroes/{hero_id}")
        assert response.status_code == 404, response.text

        # Delete a hero that does not exist
        response = client.delete(f"/heroes/{hero_id}")

Você receberá, tal como declarado, uma `list` de `bytes` ou `UploadFile`.

/// note | Detalhes Técnicos

Você pode também pode usar `from starlette.responses import HTMLResponse`.

**FastAPI** providencia o mesmo `starlette.responses` que `fastapi.responses` apenas como uma conveniência para você, o desenvolvedor. Mas a maioria das respostas disponíveis vem diretamente do Starlette.

///

    ],
)
def test_get_items(item_id, expected_response):
    response = client.get(f"/items/{item_id}")
    assert response.status_code == 200, response.text
    assert response.json() == expected_response


def test_openapi_schema():
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "openapi": "3.1.0",

/// note | Technische Details

Sie können auch `from starlette.responses import HTMLResponse` verwenden.

**FastAPI** bietet dieselben `starlette.responses` auch via `fastapi.responses` an, als Annehmlichkeit für Sie, den Entwickler. Die meisten verfügbaren <abbr title="Response – Antwort: Daten, die der Server zum anfragenden Client zurücksendet">Responses</abbr> kommen aber direkt von Starlette.

///