app.dependency_overrides = None
    response = client.get("/items/?q=foo&skip=100&limit=200")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "message": "Hello Items!",
        "params": {"q": "foo", "skip": 100, "limit": 200},

    [
        ("/items", None, 200, {"ads_id": None}),
        ("/items", {"ads_id": "ads_track"}, 200, {"ads_id": "ads_track"}),
        (
            "/items",
            {"ads_id": "ads_track", "session": "cookiesession"},
            200,
            {"ads_id": "ads_track"},
        ),
        ("/items", {"session": "cookiesession"}, 200, {"ads_id": None}),
    ],
)

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

    app.dependency_overrides = None
    response = client.get("/items/?q=foo&skip=100&limit=200")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "message": "Hello Items!",
        "params": {"q": "foo", "skip": 100, "limit": 200},

    app.dependency_overrides = None
    response = client.get("/items/?q=foo&skip=100&limit=200")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "message": "Hello Items!",
        "params": {"q": "foo", "skip": 100, "limit": 200},

                ("files", ("test2.txt", file2)),
            ),
        )
    assert response.status_code == 200, response.text
    assert response.json() == {"filenames": ["test.txt", "test2.txt"]}


def test_get_root():
    client = TestClient(app)
    response = client.get("/")
    assert response.status_code == 200, response.text
    assert b"<form" in response.content


def test_openapi_schema():

    [
        ("/items", None, 200, {"ads_id": None}),
        ("/items", {"ads_id": "ads_track"}, 200, {"ads_id": "ads_track"}),
        (
            "/items",
            {"ads_id": "ads_track", "session": "cookiesession"},
            200,
            {"ads_id": "ads_track"},
        ),
        ("/items", {"session": "cookiesession"}, 200, {"ads_id": None}),
    ],
)

@needs_py310
@pytest.mark.parametrize(
    "path,headers,expected_status,expected_response",
    [
        ("/items", None, 200, {"strange_header": None}),
        ("/items", {"X-Header": "notvalid"}, 200, {"strange_header": None}),
        (
            "/items",
            {"strange_header": "FastAPI test"},
            200,
            {"strange_header": "FastAPI test"},
        ),
        (
            "/items",

}


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


def test_main():
    response = client.get("/app")
    assert response.status_code == 200, response.text
    assert response.json() == {"message": "Hello World from main app"}


def test_openapi_schema_sub():

def test_a():
    response = client.get("/a")
    assert response.status_code == 200, response.text
    assert response.json() == "a"


def test_b():
    response = client.get("/b")
    assert response.status_code == 200, response.text
    assert response.json() == "b"


def test_c():
    response = client.get("/c")
    assert response.status_code == 200, response.text
    assert response.json() == "c"


def test_d():