How does the skill handle the 'tactical programming' trap?

It includes John Ousterhout's counterpoint to TDD, encouraging the developer to step back from feature-specific tests to evaluate the overall architectural design periodically.

What testing patterns does it support?

The skill supports various patterns including Triangulation (using multiple examples to drive generalization), Starting with the Assertion, and Obvious Implementation.

What is the core workflow of the TDD skill?

It follows the classic Red-Green-Refactor cycle: first writing a failing test to define behavior, then implementing the minimal code necessary to pass, and finally refactoring for clean design.

Can I use this for UI and styling changes?

TDD is best suited for logic and API design. For pure UI/styling changes or exploratory prototypes, the skill recommends skipping the strict TDD flow to maintain velocity.

Does this skill work with existing legacy code?

Yes, it incorporates Michael Feathers' techniques for working with legacy code, focusing on creating characterization tests to provide a safety net for modernizing older systems.

Test-Driven Development (TDD)

Name: Test-Driven Development (TDD)
Author: joelhooks

byjoelhooks

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359

セキュリティとテスト

Guides Claude through a disciplined Red-Green-Refactor workflow to ensure code quality and architectural integrity.

概要

The TDD skill empowers Claude Code with a structured methodology for software development, leveraging industry-standard practices from experts like Kent Beck and Michael Feathers. It facilitates the Red-Green-Refactor cycle, helping developers transform requirements into executable documentation and maintainable code through unit, integration, and E2E testing. By balancing strict testing patterns with pragmatic design considerations, this skill ensures that AI-generated code is robust, well-documented, and safe to refactor, while avoiding the pitfalls of over-testing implementation details.

主な機能

Expert-backed guidance on API design and legacy code management
Implementation of advanced TDD patterns like Triangulation and 'Fake It Til You Make It'
Strategic balancing of testing density versus architectural design
Deep integration with the 'Beads' task-tracking system for systematic development
359 GitHub stars
Standardized Red-Green-Refactor workflow cycles

ユースケース

Safely refactoring or adding features to legacy codebases without tests
Implementing new features with high-confidence test coverage and clear requirements
Debugging by writing reproduction tests before applying fixes to catch regressions

概要

主な機能

Expert-backed guidance on API design and legacy code management
Implementation of advanced TDD patterns like Triangulation and 'Fake It Til You Make It'
Strategic balancing of testing density versus architectural design
Deep integration with the 'Beads' task-tracking system for systematic development
359 GitHub stars
Standardized Red-Green-Refactor workflow cycles

ユースケース

Safely refactoring or adding features to legacy codebases without tests
Implementing new features with high-confidence test coverage and clear requirements
Debugging by writing reproduction tests before applying fixes to catch regressions