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TDD & Unit Testing Skills for Claude Code, Codex & AI Agents

These skills help an agent write a failing test, make it pass, and then improve the design. Members focus on TDD habits and small feedback loops for coding work.

3 skills

Explore TDD & Unit Testing skills

3 skills
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Agent Skills cover with Spec, Plan, Build, Test, Review, Simplify and Ship workflow labels.
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Testing & security

Test-Driven Development

Implement behavior with red-green-refactor and reproduce bugs in failing tests before applying fixes.

116.3KStars12.2KForks
Repository last pushed
Addy Osmani, Federico Bartoli and Joan León

ub-mode

unclebob

Apply a disciplined software development workflow with test-driven changes, refactoring and code-quality tools.

  • test-driven-development
  • code-quality
  • refactoring
7.8KStars447Forks
Repository last pushed
Official Matt Pocock Skills banner with the text AI Skills for Real Engineers and a portrait of Matt Pocock.
Free
Other utilities

tdd

Implement features and fixes in small red-green-refactor test-driven slices.

322.4KStars27KForks
Repository last pushed
Matt Pocock

Related topics

Testing 71 skillsCode Review 56 skillsDebugging 30 skillsE2E & Playwright Testing 10 skills

Related guides

How to choose TDD & Unit Testing skills

Choose this page when the process matters as much as the code: start with the behavior, write the failing test, then keep each change narrow.

  • Write a failing test before a fix
  • Work through a red-green-refactor cycle
  • Keep an implementation change small