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Write and debug tests with Vitest v1.0.0

Use this resource to write, run and debug unit tests with Vitest

New

  • 540 downloads
  • 172 likes
  • 161 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install vitest-unit-testing-2

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 or fixes Vitest tests in a TypeScript project (Node, Bun, React, Next.js, Effect). It tests the public result, mocks only system boundaries and follows existing fixtures, without adding coverage, jsdom or new setup by default.

Mostly picked by

Updated November 2, 2026

Card for the “Write and debug tests with Vitest” skill

Details

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

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What you get

  • SKILL.md: workflow and testing rules
  • references/configuration.md, mocking.md, testing-patterns.md, troubleshooting.md: configuration, mocks, patterns and troubleshooting

Good fit for

  • You add tests to an existing TypeScript module
  • A Vitest test fails because a mock is misconfigured

Not for

    Tags

    • vitest
    • unit tests
    • typescript
    • mocks
    • coverage

    About

    You say

    “Write a Vitest test for the discount calculation function, without mocking the logic under test.”

    Card for the “Write and debug tests with Vitest” skill

    Skill published by paulrberg 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, run and debug unit tests with Vitest
    3. Review and adjust the result

    Content preview

    Files

    • agents/openai.yaml0 KB
    • LICENSE1.1 KB
    • NOTICE-PALATEKIT.md0.4 KB
    • references/configuration.md3.5 KB
    • references/mocking.md1.3 KB
    • references/testing-patterns.md1.2 KB
    • references/troubleshooting.md1.3 KB
    • SKILL.md2 KB

    Origin and licence

    Listed unmodified

    Author
    paulrberg
    Source
    github.com/paulrberg/agent-skills/tree/47581b8454869c4348ca9fe8a5c2ba5408cd5525/skills/vitest
    Licence
    MIT

    Notice

    « vitest » (paulrberg, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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