test_stuff.py

from contextlib import asynccontextmanager
from typing import AsyncGenerator

import pytest


@pytest.mark.asyncio
async def test():
    async with ctm() as r:
        print(r)


@asynccontextmanager
async def ctm() -> AsyncGenerator[None, str]:
    async with ctm_2() as r:
        yield r


@asynccontextmanager
async def ctm_2() -> AsyncGenerator[None, str]:
    yield "henlo"