How does it handle external dependencies like databases?

It includes specific mocking patterns for common services like Supabase, Redis, and OpenAI to ensure your tests remain isolated, fast, and deterministic.

What is the required code coverage threshold?

The skill enforces a minimum of 80% coverage for branches, functions, lines, and statements to ensure that all critical paths and edge cases are verified.

Can I use this skill for bug fixing?

Yes, the workflow requires writing a failing test that reproduces the reported bug before any implementation code is modified, ensuring the fix is verified and permanent.

What testing frameworks does this skill support?

The skill provides optimized patterns for Jest and Vitest for unit and integration testing, as well as Playwright for end-to-end browser automation.

Does it support user-centric testing?

Yes, Step 1 of the workflow involves writing User Journeys (As a... I want to... so that...) to ensure tests focus on user-visible behavior rather than internal implementation details.

TDD Workflow & Testing

Name: TDD Workflow & Testing
Author: unju-ai

byunju-ai

0•

セキュリティとテスト

Enforces a strict test-driven development cycle with high coverage requirements for robust, production-grade software.

This skill transforms Claude into a TDD-first developer, ensuring that every new feature, bug fix, or refactor begins with a comprehensive testing strategy. It mandates a minimum of 80% coverage across unit, integration, and E2E tests, guiding users through the standardized Red-Green-Refactor cycle. By integrating user journeys, semantic search testing, and advanced mocking for services like Supabase and Redis, it provides a safety net that enables confident code evolution and production reliability.

主な機能

01Minimum 80% test coverage across all dimensions

02Strict Red-Green-Refactor workflow enforcement

03Pre-configured patterns for Next.js APIs and UI components

040 GitHub stars

05Advanced mocking strategies for external services and databases

06Automated generation of Unit, Integration, and E2E tests

ユースケース

01Refactoring legacy code while maintaining functional integrity

02Implementing complex API integrations with validated edge cases and error handling

03Building new features with a tests-first mentality to prevent regressions

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add unju-ai/ecc tdd-workflow

For use in Claude.ai and ChatGPT