Async fixtures appear to be broken with pytest==3.7

[orf]

Given a simple async fixture and test:

@pytest.fixture()
async def my_client(aiohttp_client):
    return await aiohttp_client(make_app())

async def test_x(my_client):
    await my_client.get('/abc/')

Results in an exception: AttributeError: 'coroutine' object has no attribute 'get'

Downgrading to pytest<3.7 fixed this.

[nicoddemus]

Thanks for reporting, this is a duplicate of #89.

This will be fixed with pytest 3.7.1, due to be released today. 👍