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Test-driven development: red, green, refactor v1.0.0

Use this resource to develop and fix bugs with tests

New

  • 400 downloads
  • 113 likes
  • 173 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install test-first-development-loop

With no option, the skill goes to ~/.agents/skills/; add --agent claude-code (or codex, cursor…) to target an agent.

First time: connect the CLI with

npx --yes palatekit@latest login

The agent follows the red, green, refactor cycle: a failing test first, then the minimal code that makes it pass, then cleanup. For a bug, it first writes a test that reproduces it. It also detects the project's test stack. You get tests that prove the behaviour.

Mostly picked by

Updated November 2, 2026

Card for the “Test-driven development: red, green, refactor” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
MIT

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What you get

  • SKILL.md: red, green, refactor cycle step by step
  • SKILL.md: bug-fix method and test pyramid

Good fit for

  • You add a business rule to an existing function
  • A bug keeps coming back and you want proof it is fixed

Not for

    Tags

    • tests
    • tdd
    • bug
    • refactoring

    About

    You say

    “Fix this VAT calculation bug by writing a test that reproduces it first.”

    Card for the “Test-driven development: red, green, refactor” skill

    Skill published by addyosmani under the MIT license, delivered in its original version.

    Show more

    How to use it

    1. Install the skill in your agent's skills folder
    2. Ask your agent to develop and fix bugs with tests
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • SKILL.md16.3 KB

    Origin and licence

    Listed unmodified

    Author
    addyosmani
    Source
    github.com/addyosmani/agent-skills/tree/aeac41d4d005999432bb7312f7ff06383a91d59d/skills/test-driven-development
    Licence
    MIT

    Notice

    « test-driven-development » (addyosmani, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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