In what language does the skill provide feedback?

While the code and internal reasoning are in English, all user-facing summaries, reports, and TDD session updates are provided in Japanese.

Why does the TDD skill require tests to fail first?

The 'RED' phase ensures your test is valid and actually checking the new functionality. If a test passes before you write code, it's a false positive that doesn't prove your implementation works.

Does this skill work with existing projects?

Yes, you can use the /tdd command on existing files to add new functions, fix bugs, or refactor logic while ensuring the codebase remains tested.

What is the minimum test coverage requirement?

The skill enforces a minimum of 80% coverage for general code, but requires 100% coverage for critical business logic, security, and financial calculations.

TDD Workflow Guide

Name: TDD Workflow Guide
Author: YuriNakayama

byYuriNakayama

0•

安全与测试

Enforces a rigorous Red-Green-Refactor test-driven development cycle to ensure code reliability and high test coverage.

This skill automates and guides the Test-Driven Development (TDD) process within Claude Code, ensuring developers follow best practices by writing tests before implementation. It scaffolds interfaces, generates failing tests, implements minimal code to pass, and facilitates refactoring while maintaining an 80%+ test coverage threshold. By strictly adhering to the TDD cycle, this skill minimizes bugs, improves code architecture, and provides a structured approach to building reliable software components and fixing critical logic with Japanese-language reporting.

主要功能

010 GitHub stars

02Mandatory failing test verification (RED phase)

03Japanese language output for summaries and reports

04Interface and type scaffolding prior to implementation

05Test coverage tracking with an 80% minimum requirement

06Automated Red-Green-Refactor cycle enforcement

使用场景

01Implementing new features with high reliability requirements

02Refactoring existing codebases while maintaining functional integrity

03Reproducing and fixing bugs by writing regression tests first

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add yurinakayama/research tdd

For use in Claude.ai and ChatGPT