Tdd Coach

Automate Professional TDD Discipline

The TDD Coach is an expert-level engineering skill designed to enforce the Red-Green-Refactor cycle. It solves the common problem of "testing after the fact" by guiding developers through disciplined, behavior-driven development. Whether you are building from scratch or managing legacy systems, this skill ensures your code is fully tested, minimally implemented, and cleanly refactored.

Advanced Multi-Mode Support

• Interactive Coaching: A pair-programming mentor that refuses to let you skip phases. It waits for actual test failure outputs before allowing implementation code.
• Legacy Characterization: Safely wrap untested "black box" code in characterization tests before you attempt migrations or refactors.
• TDD Planning: Converts vague user stories or requirements into a sequence of micro-commits and specific test cases.
• Audit & Scorecard: Reviews Pull Requests to score TDD compliance, flagging "test smells" like over-mocking or implementation coupling.

Why It's Better Than Basic Prompting

Standard LLMs often provide "hallucinated" complete solutions that bypass the TDD loop entirely. This skill forces a state-machine approach: it tracks your progress through the loop, detects when you're trying to do too much at once, and requires objective proof (test output) before moving forward. It supports all major frameworks including Pytest, Vitest, Jest, JUnit, and Go Test.