How does it help with Test-Driven Development (TDD)?

The skill guides Claude to follow the Red-Green-Refactor cycle: writing a failing test first, then the minimal code to pass, and finally optimizing the implementation.

What is the recommended code coverage goal?

The skill targets a minimum of 80% overall code coverage, with a requirement of 100% coverage for critical business logic and key execution paths.

Does it handle external API mocking?

Yes, it provides detailed examples for using unittest.mock and patch to simulate external service calls, handle exceptions, and verify call arguments.

Does this skill support asynchronous Python code?

Yes, it includes specific patterns and fixtures for testing async functions using pytest-asyncio, including mocking awaited calls and managing async context managers.

Can I use this for existing projects?

Absolutely. It provides strategies for improving test coverage, organizing test suites, and refactoring existing logic in established Python repositories.

Python Testing Patterns

Name: Python Testing Patterns
Author: xu-xiang

byxu-xiang

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Security & Testing

Implements a robust Python testing strategy using pytest, TDD methodology, and advanced mocking techniques to ensure code reliability.

This skill provides Claude with a comprehensive framework for writing, organizing, and executing Python tests. It enforces Test-Driven Development (TDD) workflows and provides standardized patterns for complex testing scenarios, including fixture management, dependency mocking, asynchronous code testing, and coverage reporting. By following these established patterns, developers can ensure their Python applications achieve high code coverage and maintainability while reducing bugs through rigorous automated validation.

Key Features

01Advanced pytest fixture management with various scope levels

02Asynchronous testing support with pytest-asyncio and side-effect handling

03Parametrized testing for efficient multi-scenario validation

04Comprehensive mocking and patching patterns for external dependencies

05Test-Driven Development (TDD) workflow integration (Red-Green-Refactor)

0661 GitHub stars

Use Cases

01Setting up complex integration tests involving databases, file systems, and external APIs

02Refactoring legacy Python code while maintaining high test coverage and reliability

03Building a new Python module from scratch using a strict TDD approach

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add xu-xiang/everything-claude-code-zh python-testing

For use in Claude.ai and ChatGPT

Download Skill