Can I skip TDD for quick fixes or configuration changes?

The skill strongly discourages skipping TDD for 'one-line fixes' or config changes, as these often cause outages. Exceptions are only allowed for throwaway prototypes with explicit human approval.

What is the 'Iron Law' of this TDD skill?

The Iron Law mandates that no production code can be written unless it is justified by a test that failed immediately prior to the implementation. This ensures every line of code serves a verified purpose.

How does this skill handle legacy code without existing tests?

Instead of ignoring tests, the skill instructs the AI to add a new test for the specific behavior being changed or added, preventing the perpetuation of untested code gaps.

Does this skill help with refactoring?

Yes. The 'Refactor' stage of the cycle allows for code cleanup only while tests are green, ensuring that structural improvements do not break existing functionality.

Test-Driven Development (TDD) Enforcement

Name: Test-Driven Development (TDD) Enforcement
Author: seokan-jeong

byseokan-jeong

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安全与测试

Enforces a strict Red-Green-Refactor cycle to ensure every line of production code is justified by a failing test.

This skill integrates a rigorous Test-Driven Development (TDD) workflow into Claude's coding process, mandating the 'Iron Law' that no production code is written without a prior failing test. It guides the AI through the disciplined Red-Green-Refactor cycle, preventing common pitfalls like shotgun debugging, over-mocking, and testing implementation details rather than behavior. By eliminating 'test-after' rationalization and requiring minimal code increments, this skill ensures high code reliability, simplifies debugging, and prevents technical debt in both new features and bug fixes.

主要功能

01Behavior-focused testing to ensure resilient refactors

02Structured rationalization to prevent skipping tests for 'simple' changes

037 GitHub stars

04Strict Red-Green-Refactor cycle enforcement

05Automated validation of failing tests before implementation

06Detection and avoidance of common testing anti-patterns

使用场景

01Safe refactoring of legacy systems while maintaining green test states

02Systematic bug fixing by reproducing issues with failing tests first

03Building new software features with 100% test-justified production code

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add seokan-jeong/team-shinchan test-driven-development

For use in Claude.ai and ChatGPT

主要功能

01Behavior-focused testing to ensure resilient refactors

02Structured rationalization to prevent skipping tests for 'simple' changes

037 GitHub stars

04Strict Red-Green-Refactor cycle enforcement

05Automated validation of failing tests before implementation

06Detection and avoidance of common testing anti-patterns

使用场景

01Safe refactoring of legacy systems while maintaining green test states

02Systematic bug fixing by reproducing issues with failing tests first

03Building new software features with 100% test-justified production code

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add seokan-jeong/team-shinchan test-driven-development

For use in Claude.ai and ChatGPT