"/items",
            "from_cookie",
            200,
            {"q_or_cookie": "from_cookie"},
        ),
        (
            "/items?q=foo",
            "from_cookie",
            200,
            {"q_or_cookie": "foo"},
        ),
        (
            "/items",
            None,
            200,
            {"q_or_cookie": None},
        ),
    ],
)

):
    if not q:
        return last_query
    return q


@app.get("/items/")
async def read_query(query_or_default: str = Depends(query_or_cookie_extractor)):