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Unit testing with Jest, Vitest and pytest v1.0.0

Use this resource to write unit tests with Jest, Vitest or pytest and configure coverage

New

  • 494 downloads
  • 167 likes
  • 243 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install unit-testing-jest-vitest-pytest

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 picks the right kind of double (stub, spy, mock, fake), structures tests as Arrange-Act-Assert, configures coverage thresholds and mutation testing with Stryker or mutmut. You get tests that fail when the code is wrong.

Mostly picked by

Updated November 2, 2026

Card for the “Unit testing with Jest, Vitest and pytest” skill

Details

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

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What you get

  • SKILL.md : test doubles taxonomy and Arrange-Act-Assert rules
  • SKILL.md : coverage thresholds and CI gating
  • references/patterns.md : Jest, Vitest and pytest patterns

Good fit for

  • You are starting unit tests for a Node or Python project
  • A coverage threshold is not enforced in your CI

Not for

    Tags

    • jest
    • vitest
    • pytest
    • unit tests

    About

    You say

    “Write unit tests for this service with Vitest, using fake timers and a coverage gate in CI.”

    Card for the “Unit testing with Jest, Vitest and pytest” skill

    Skill published by petrkindlmann 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 unit tests with Jest, Vitest or pytest and configure coverage
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1.1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • references/patterns.md8.4 KB
    • SKILL.md15.7 KB

    Origin and licence

    Listed unmodified

    Author
    petrkindlmann
    Source
    github.com/petrkindlmann/qa-skills/tree/62434253c2592f27b494609c27f224939c86346d/skills/unit-testing
    Licence
    MIT

    Notice

    « unit-testing » (petrkindlmann, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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