pytest-asyncio-patterns

Overview

Per pytest-asyncio.readthedocs.io:

pytest-asyncio runs async def test functions under pytest; without it, coroutine tests are collected but never awaited. It provides the @pytest.mark.asyncio marker (or an auto-mode that drops the marker), async-aware fixtures with configurable event-loop scoping, and works with FastAPI/Starlette (via httpx.AsyncClient) and aiohttp (via pytest-aiohttp).

Nearest neighbor: python-unit-tests covers the full framework but treats async in one paragraph. This skill covers the asyncio path end to end: modes, loop scoping, async fixtures, AsyncMock, and framework client patterns.

Step 1 - Install