Mocha Testing Skill Core Patterns Basic Test with Chai Chai Assertions Sinon Mocking Async Testing Anti-Patterns | Bad | Good | Why | |-----|------|-----| | Missing | Use async/await | Hanging tests | | No sandbox | | Stubs leak | | Arrow in | Regular function for | Context | Quick Reference | Task | Command | |------|---------| | Run all | | | Watch | | | Grep | | | Timeout | | | Recursive | | Setup: Deep Patterns → | § | Section | Lines | |---|---------|-------| | 1 | Production Configuration | mocharc, NYC coverage, TypeScript | | 2 | Testing with Chai + Sinon | Stubs, spies, assertions |…