aiohttp client fixture with pytest-asyncio compatibility

aiohttp_fixture.py

import pytest
from aiohttp.test_utils import TestServer, TestClient


@pytest.fixture
async def aio_client():
    clients = []

    async def factory(app):
        server = TestServer(app)
        client = TestClient(server)
        await client.start_server()
        clients.append(client)
        return client

    yield factory

    while clients:
        await clients.pop().close()