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Characterization tests before refactoring v1.0.0

Use this resource to write characterization tests before changing existing code

New

  • 386 downloads
  • 106 likes
  • 115 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install characterization-tests-before-refactor

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 finds the code to protect, classifies its behaviour, generates tests and fills in the actual observed values. You get a test suite that records what the code does today and acts as a safety net.

Mostly picked by

Updated November 2, 2026

Card for the “Characterization tests before refactoring” skill

Details

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

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What you get

  • SKILL.md: code discovery and behaviour classification
  • SKILL.md: test generation and filling in actual values

Good fit for

  • You need to refactor a module that has no tests
  • An AI will modify legacy code and you want to limit regressions

Not for

    Tags

    • tests
    • legacy
    • refactoring
    • regression
    • characterization

    About

    You say

    “Write characterization tests for the discount module before I refactor it.”

    Card for the “Characterization tests before refactoring” skill

    Skill published by rshankras 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 write characterization tests before changing existing code
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1.1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • SKILL.md8 KB

    Origin and licence

    Listed unmodified

    Author
    rshankras
    Source
    github.com/rshankras/claude-code-apple-skills/tree/9ffb83138209057875698dd11c1720c657c47a92/skills/testing/characterization-test-generator
    Licence
    MIT

    Notice

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

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