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Adapt React tests to version 19 v1.0.0

Use this resource to update test files for React 19 compatibility

New

  • 337 downloads
  • 185 likes
  • 116 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install react19-test-migration-fixes

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 fixes tests in a set order: act import, replacing Simulate with fireEvent, cleaning react-dom/test-utils imports, StrictMode call counts and async act wrapping. It measures the actual number of calls rather than guessing.

Mostly picked by

Updated November 2, 2026

Card for the “Adapt React tests to version 19” skill

Details

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

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What you get

  • SKILL.md: fix order and before-and-after patterns
  • SKILL.md: react-dom/test-utils mapping table and StrictMode corrections

Good fit for

  • Your tests fail after moving to React 19 because of the act import
  • A test counts render calls in StrictMode and the count has changed

Not for

    Tags

    • react 19
    • testing
    • act
    • migration
    • fireEvent

    About

    You say

    “Update these tests for React 19: they import act from react-dom/test-utils and use Simulate.”

    Card for the “Adapt React tests to version 19” skill

    Skill published by github 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 update test files for React 19 compatibility
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • SKILL.md3.1 KB

    Origin and licence

    Listed unmodified

    Author
    github
    Source
    github.com/github/awesome-copilot/tree/0fe6545b950671641b2b14b44eb56678fea6c6b4/skills/react19-test-patterns
    Licence
    MIT

    Notice

    « react19-test-patterns » (github, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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