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test-driven-development

Enforce test-first development with failing tests before implementation.

Updated Aug 23, 2026
Search Tags:#TDD#red-green-refactor#quality-assurance#software-engineering#test-driven-development
One-click install
npx skills add https://github.com/park-kyungchan/palantir --skill test-driven-development-park-kyungchan
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: test-driven-development
Source: https://github.com/park-kyungchan/palantir/tree/main/.claude/plugins/cache/claude-plugins-official/superpowers/4.2.0/skills/test-driven-development
Command: npx skills add https://github.com/park-kyungchan/palantir --skill test-driven-development-park-kyungchan

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Test-Driven Development (TDD) helps ensure code correctness by requiring tests before implementation, reducing regression risk and guiding design decisions.

Core Features & Use Cases

  • Red-Green-Refactor cycle: Write a failing test, implement minimal code to pass, then refactor for clarity.
  • Early bug detection: Catch design flaws and edge cases early during development.
  • Consistent code quality: Build confidence with automated tests that document intended behavior.

Quick Start

  1. Write a failing test that captures the desired feature or bug fix.
  2. Implement the smallest amount of code to make the test pass.
  3. Refactor the code to improve structure while keeping all tests green.

Frequently Asked Questions about test-driven-development

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I start test-driven development for a new software feature?▼

Test-driven development reduces regression risk by requiring failing tests before implementation. Catching design flaws and edge cases early during development ensures code correctness and builds confidence with automated tests documenting intended behavior.

Can I apply the red-green-refactor cycle when fixing bugs?▼

Test-driven development applies to feature development, bug fixes, and refactoring across software projects without requiring specific dependencies. It guides design decisions and ensures code changes are driven by verified behavior.

Why does writing tests first improve software engineering quality?▼

Test-driven development requires writing failing tests before implementation and verifying tests fail before code passes. It satisfies the red-green-refactor cycle and requires minimal code to implement tests first.

When should I not use test-driven development for refactoring?▼

Test-driven development suits refactoring, feature development, and bug fixes across software projects. If a change cannot be captured by a verified test or requires external dependencies outside the codebase, TDD may not fit.

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