Function handler

tests/test_client_functional.py:105–106

(request: web.Request)

    async def factory(**kwargs: Any) -> TestClient[web.Request, web.Application]:
        async def handler(request: web.Request) -> web.Response:
            return web.json_response({"headers": dict(request.headers)})

        app = web.Application()
        app.router.add_get("/", handler)