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TDD Workflow

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Test-driven development skill that enforces the red-green-refactor cycle. Write failing tests first, then implement minimal code to pass.

By Community 6,200 stars v1.1.0 Updated 2026-03-05
$ Copy the SKILL.md file to .claude/skills/tdd-workflow.md

About This Skill

TDD Workflow enforces the classic red-green-refactor cycle in your AI-assisted development. Instead of writing code first, the agent writes a failing test, implements the minimum code to make it pass, then refactors.

The Cycle

  1. Red — Write a test that describes the desired behavior. Run it to confirm it fails.
  2. Green — Write the minimal implementation to make the test pass. No more, no less.
  3. Refactor — Clean up the code while keeping all tests green.
  4. Commit — Make a small, focused commit.

Why Use This Skill

  • Forces the agent to think about requirements before implementation
  • Produces code with built-in test coverage
  • Keeps implementations minimal and focused
  • Creates a natural commit rhythm with working checkpoints

Use Cases

  • Feature development with test-first approach
  • Bug fixing with regression test coverage
  • Refactoring with confidence
  • Teaching TDD methodology to teams

Pros & Cons

Pros

  • +Guarantees test coverage for new code
  • +Prevents over-engineering
  • +Creates clean commit history
  • +Works with any test framework

Cons

  • -Slower initial development pace
  • -Requires a working test runner in the project
  • -Not ideal for exploratory/prototyping work

Related Skills

FAQ

What does TDD Workflow do?
Test-driven development skill that enforces the red-green-refactor cycle. Write failing tests first, then implement minimal code to pass.
What platforms support TDD Workflow?
TDD Workflow is available on Claude Code, OpenAI Codex CLI, Gemini CLI.
What are the use cases for TDD Workflow?
Feature development with test-first approach. Bug fixing with regression test coverage. Refactoring with confidence.

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