import asyncio
import pytest


@pytest.fixture()
async def async_inner_fixture():
    await asyncio.sleep(0.01)
    print('inner start')
    yield True
    print('inner stop')


@pytest.fixture()
async def async_fixture_outer(async_inner_fixture, event_loop):
    await asyncio.sleep(0.01)
    print('outer start')
    assert async_inner_fixture is True
    yield True
    print('outer stop')


@pytest.mark.asyncio
async def test_async_fixture(async_fixture_outer):
    assert async_fixture_outer is True
    print('test_async_fixture')