},
)
async def c():
    return "c"


@router.get(
    "/d",
    responses={
        "400": {"description": "Error with str"},
        "5XX": {"model": ResponseModel},
        "default": {"model": ResponseModel},
    },
)
async def d():
    return "d"


app.include_router(router)


client = TestClient(app)


def test_a():
    response = client.get("/a")