n = 1000
    headers = {}
    body = [1] * n
    data = json.dumps(body).encode()
    if compress:
        data = gzip.compress(data)
        headers["Content-Encoding"] = "gzip"
    headers["Content-Type"] = "application/json"
    response = client.post("/sum", content=data, headers=headers)
    assert response.json() == {"sum": n}


def test_request_class(client: TestClient):

    assert response.status_code == 200, response.text
    assert response.json() == {"name": "John", "surname": "Doe"}


def test_no_response_model_no_annotation_return_dict():
    response = client.get("/no_response_model-no_annotation-return_dict")
    assert response.status_code == 200, response.text
    assert response.json() == {"name": "John", "surname": "Doe"}

        assert response.status_code == 200, response.text
        assert response.json() == snapshot(
            {"age": 30, "id": IsInt(), "name": "Dead Pond"}
        )
        assert response.json()["id"] != 9000, (
            "The ID should be generated by the database"
        )

        # Read a hero
        hero_id = response.json()["id"]
        response = client.get(f"/heroes/{hero_id}")

    client = TestClient(app)
    response = client.post(path, json={})
    assert response.status_code == 200, response.text
    assert response.json() == {"p": None}


@pytest.mark.parametrize(
    "path",
    ["/optional-str", "/model-optional-str"],
)
def test_optional_str(path: str):
    client = TestClient(app)
    response = client.post(path, json={"p": "hello"})
    assert response.status_code == 200

```

с телом JSON:

```JSON
{
    "id": "2expen51ve",
    "customer": "Mr. Richie Rich",
    "total": "9999"
}
```

то *ваш API* обработает счёт и, в какой-то момент позже, отправит запрос обратного вызова на `callback_url` (*внешний API*):

```
https://www.external.org/events/invoices/2expen51ve
```

с телом JSON примерно такого вида:

```JSON
{

Por ejemplo, el modelo anterior declara un “`object`” JSON (o `dict` en Python) como:

```JSON
{
    "name": "Foo",
    "description": "An optional description",
    "price": 45.2,
    "tax": 3.5
}
```

...dado que `description` y `tax` son opcionales (con un valor por defecto de `None`), este “`object`” JSON también sería válido:

```JSON
{
    "name": "Foo",
    "price": 45.2
}
```

    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"}
    assert response.headers["WWW-Authenticate"] == "Other"

    response = client.put(
        "/items/5",
        json={
            "name": "Foo",
            "description": "A very nice Item",
            "price": 35.4,
            "tax": 3.2,
        },
    )
    assert response.status_code == 200


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

    assert response.json() == {"item_id": "foo"}


def test_get_api_route_not_decorated():
    response = client.get("/items-not-decorated/foo")
    assert response.status_code == 200, response.text
    assert response.json() == {"item_id": "foo"}


def test_delete():
    response = client.request("DELETE", "/items/foo", json={"name": "Foo"})
    assert response.status_code == 200, response.text

    assert response.json() == {"username": "secret"}


def test_security_api_key_no_key():
    response = client.get("/users/me")
    assert response.status_code == 401, response.text
    assert response.json() == {"detail": "Not authenticated"}
    assert response.headers["WWW-Authenticate"] == "APIKey"


def test_openapi_schema():
    response = client.get("/openapi.json")