"loc": ["query", "foo"],
                "msg": "ensure this value has at least 1 characters",
                "type": "value_error.any_str.min_length",
            }
        )
    ]
}


@pytest.mark.parametrize(
    "path,expected_status,expected_response",
    [
        ("/default", 200, {"foo": "foo"}),
        ("/default?foo=bar", 200, {"foo": "bar"}),
        ("/required?foo=bar", 200, {"foo": "bar"}),

The way to describe this in OpenAPI, is to mark that field as **required**, because it will always be there.

Because of that, the JSON Schema for a model can be different depending on if it's used for **input or output**:

import pytest
from dirty_equals import IsDict
from fastapi.testclient import TestClient

from docs_src.cookie_params.tutorial001_an import app


@pytest.mark.parametrize(
    "path,cookies,expected_status,expected_response",
    [
        ("/items", None, 200, {"ads_id": None}),
        ("/items", {"ads_id": "ads_track"}, 200, {"ads_id": "ads_track"}),
        (
            "/items",

import pytest
from dirty_equals import IsDict
from fastapi.testclient import TestClient

from docs_src.header_params.tutorial002 import app

client = TestClient(app)


@pytest.mark.parametrize(
    "path,headers,expected_status,expected_response",
    [
        ("/items", None, 200, {"strange_header": None}),
        ("/items", {"X-Header": "notvalid"}, 200, {"strange_header": None}),
        (
            "/items",

    router_shutdown: bool = False
    sub_router_startup: bool = False
    sub_router_shutdown: bool = False


@pytest.fixture
def state() -> State:
    return State()


@pytest.mark.filterwarnings(
    r"ignore:\s*on_event is deprecated, use lifespan event handlers instead.*:DeprecationWarning"
)
def test_router_events(state: State) -> None:
    app = FastAPI()

    @app.get("/")

@pytest.fixture(name="client")
def get_client():
    from docs_src.response_model.tutorial004_py310 import app

    client = TestClient(app)
    return client


@needs_py310
@pytest.mark.parametrize(
    "url,data",
    [
        ("/items/foo", {"name": "Foo", "price": 50.2}),
        (
            "/items/bar",
            {"name": "Bar", "description": "The bartenders", "price": 62, "tax": 20.2},

@pytest.fixture(name="client")
def get_client():
    from docs_src.dependencies.tutorial004_an_py310 import app

    client = TestClient(app)
    return client


@needs_py310
@pytest.mark.parametrize(
    "path,expected_status,expected_response",
    [
        (
            "/items",
            200,
            {
                "items": [
                    {"item_name": "Foo"},

import pytest
from dirty_equals import IsDict
from fastapi.testclient import TestClient

from docs_src.dependencies.tutorial001 import app

client = TestClient(app)


@pytest.mark.parametrize(
    "path,expected_status,expected_response",
    [
        ("/items", 200, {"q": None, "skip": 0, "limit": 100}),
        ("/items?q=foo", 200, {"q": "foo", "skip": 0, "limit": 100}),

@pytest.fixture(name="client")
def get_client():
    from docs_src.dependencies.tutorial001_an_py310 import app

    client = TestClient(app)
    return client


@needs_py310
@pytest.mark.parametrize(
    "path,expected_status,expected_response",
    [
        ("/items", 200, {"q": None, "skip": 0, "limit": 100}),
        ("/items?q=foo", 200, {"q": "foo", "skip": 0, "limit": 100}),

                """
            ),
        ] = None,
        deprecated: Annotated[
            Optional[bool],
            Doc(
                """
                Mark all *path operations* in this router as deprecated.

                It will be added to the generated OpenAPI (e.g. visible at `/docs`).

                Read more about it in the