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Writing unit tests with Vitest v1.0.0

Use this resource to write and configure Vitest tests for a JavaScript or TypeScript application

New

  • 489 downloads
  • 216 likes
  • 185 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install vitest-unit-tests

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 writes describe, it and expect suites, mocks modules with vi.mock and vi.fn, and tests asynchronous code. It configures vitest.config and coverage when needed. You get readable tests and mocks limited to the edges of the code.

Mostly picked by

Updated November 2, 2026

Card for the “Writing unit tests with Vitest” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
Apache-2.0

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What you get

  • SKILL.md: test writing, assertions and async tests
  • references/: vitest configuration, vi.mock and vi.fn mocking, test patterns

Good fit for

  • You write unit or integration tests for a TypeScript app
  • You need to mock modules or configure coverage

Not for

    Tags

    • vitest
    • tests
    • mocks
    • typescript

    About

    You say

    “Write tests for the cart service with Vitest, mocking the payment API.”

    Card for the “Writing unit tests with Vitest” skill

    Skill published by existential-birds under the Apache-2.0 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 and configure Vitest tests for a JavaScript or TypeScript application
    3. Review and adjust the result

    Content preview

    Files

    • CONFIG.md3.3 KB
    • LICENSE10.7 KB
    • MOCKING.md2.8 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • PATTERNS.md3.4 KB
    • references/config.md3.6 KB
    • references/mocking.md3.4 KB
    • references/patterns.md3.7 KB
    • SKILL.md3.6 KB

    Origin and licence

    Listed unmodified

    Author
    existential-birds
    Source
    github.com/existential-birds/beagle/tree/d1a74899fbfec74974d1818e4cac7c3d54d44b65/plugins/beagle-react/skills/vitest-testing
    Licence
    Apache-2.0

    Notice

    « vitest-testing » (existential-birds, Apache-2.0) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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