Pytest Async Testing
Master async testing in Python with production-ready patterns for pytest-asyncio, async fixtures, and mocking. Covers FastAPI endpoints, Kafka clients, context managers, and async generators with proper event loop isolation.
Pytest Async Testing provides patterns for testing asynchronous Python code with pytest-asyncio, AsyncMock, and async fixtures.
AI-generated summary based on this skill's SKILL.md
Decision gist · record as of 2026-01-26
Pytest Async Testing provides patterns for testing asynchronous Python code with pytest-asyncio, AsyncMock, and async fixtures. Master async testing in Python with production-ready patterns for pytest-asyncio, async fixtures, and mocking. Covers FastAPI endpoints, Kafka clients, context managers, and async generators with proper event loop isolation.
Use it when
- Pytest Async Testing supports async fixtures through pytest-asyncio, letting you create reusable async setup/teardown logic.
- Pytest Async Testing fully supports testing FastAPI endpoints and other async frameworks.
Install
dawiddutoit/custom-claude/pytest-async-testing · repository language: Python
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Frequently asked questions
AI-generated answers based on this skill's SKILL.md and metadata
How to test async code with pytest?
Pytest Async Testing enables you to test asynchronous Python functions using the pytest-asyncio plugin. Mark your async test functions with @pytest.mark.asyncio, then pytest automatically manages the event loop and runs your async/await code. This approach integrates seamlessly with standard pytest workflows, allowing you to test coroutines, async context managers, and async generators alongside synchronous tests.
What are pytest async fixtures and how do I set them up?
Pytest Async Testing supports async fixtures through pytest-asyncio, letting you create reusable async setup/teardown logic. Define fixtures with async def and decorate them with @pytest_asyncio.fixture, then use them in your async test functions. This enables production-ready patterns for database connections, API clients, Kafka consumers, and other async resources with proper event loop isolation.
Can I run async await pytest examples for FastAPI endpoints?
Pytest Async Testing fully supports testing FastAPI endpoints and other async frameworks. Use @pytest.mark.asyncio on your test functions, create async fixtures for your app client, and test your endpoints by awaiting the async calls. This covers real-world scenarios like testing async route handlers, middleware, and dependency injection with proper event loop management.
What async test cases and patterns does pytest asyncio support?
Pytest Async Testing covers comprehensive async patterns: coroutine testing, async context managers, async generators, and mocking async functions. Learn best practices for event loop isolation, fixture composition, and concurrent test execution. The framework handles async/await syntax natively, enabling you to write maintainable unit tests for complex asynchronous code like Kafka clients and streaming operations.
How do I configure pytest async test runner for my project?
Pytest Async Testing requires installing pytest-asyncio and configuring it in your pytest.ini or pyproject.toml. Set asyncio_mode to auto or strict depending on your needs, then mark async tests with @pytest.mark.asyncio. This setup ensures proper event loop creation, isolation between tests, and compatibility with async fixtures and mocking libraries.
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