What Python frameworks does this skill support?

While specifically optimized for pytest and FastAPI, the core async patterns and mocking strategies are applicable to any asynchronous Python application.

Can it help with FastAPI dependency injection?

Yes, it includes specific patterns for creating dummy dependencies and service layer tests that verify coordination between different application components.

Why use the __wrapped__ pattern in DAO testing?

This skill uses the __wrapped__ pattern to bypass connection-management decorators on DAO methods, enabling direct unit testing of logic using injected mock connections.

How does it handle database testing?

The skill provides sophisticated mock objects like FakeConnection and FakeTransaction to simulate database interactions, allowing you to test queries and transactions without a live database.

Async Testing Expert

Name: Async Testing Expert
Author: rafaelkamimura

byrafaelkamimura

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Security & Testing

Master asynchronous Python testing using pytest with production-grade patterns for FastAPI and database interactions.

About

This skill provides comprehensive guidance for architecting and implementing robust asynchronous test suites for Python applications, particularly those built with FastAPI. It offers a library of production-ready patterns, including specialized pytest fixtures, sophisticated database mocking objects like FakeConnection and FakeRecord, and structured testing methodologies for DAO and service layers. Whether you are setting up a new test suite or refactoring complex async logic, this skill ensures your tests are reliable, readable, and properly isolated from external dependencies using industry-standard best practices.

Key Features

Advanced database mocking with FakeConnection and transaction simulation
4 GitHub stars
Structured organization patterns for DAO, Service, and Router layers
Implementation of type hints and descriptive naming conventions in tests
Production-ready pytest fixtures for FastAPI apps and async event loops
Techniques for testing complex async batch operations and dependency injection

Use Cases

Mocking asynchronous database drivers like asyncpg or psqlpy without a live DB
Unit testing Data Access Objects (DAOs) with complex transaction logic
Setting up a comprehensive test suite for a new FastAPI backend

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add rafaelkamimura/claude-tools async-testing-expert

For use in Claude.ai and ChatGPT

Download Skill

GitHub