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Vitest unit tests: mocks and edge cases v1.0.0

Use this resource to write Vitest unit tests for business logic

New

  • 95 downloads
  • 120 likes
  • 229 saves

Free

Install with the CLI

In a terminal, from the folder you want:

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

First time: connect the CLI with

npx --yes palatekit@latest login

Cursor writes focused tests for business logic and utility functions, mocks external dependencies with vi.mock before the imports, groups cases in describe blocks and limits each file to 3 to 5 tests. It detects whether the project uses TypeScript.

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Updated November 2, 2026

Card for “Vitest unit tests: mocks and edge cases”

Details

Works in
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Generates with
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Licence
CC0-1.0

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What you get

  • The .mdc file (in English): guidelines on tests, mocks and naming
  • An example Vitest test with its mocks

Good fit for

  • A TypeScript project that must cover its calculation functions
  • A team that wants readable and few tests

Not for

    Tags

    • vitest
    • unit tests
    • mocks
    • typescript

    About

    You say

    “Write the unit tests for the discount calculation, including edge cases.”

    Card for “Vitest unit tests: mocks and edge cases”

    Rule published by PatrickJS under the CC0-1.0 license, delivered in its original version.

    Show more

    How to use it

    1. Copy the .mdc file into your project's .cursor/rules/ folder
    2. Ask Cursor to write Vitest unit tests for business logic
    3. Adjust the rule to your conventions

    Content preview

    Files

    • LICENSE6.5 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • vitest-unit-tests-rule.mdc4.4 KB

    Origin and licence

    Listed unmodified

    Author
    PatrickJS
    Source
    github.com/PatrickJS/awesome-cursorrules/blob/b044f956f021b6e8877f16781bcfc466a6a120e9/rules/vitest-unit-testing-cursorrules-prompt-file.mdc
    Licence
    CC0-1.0

    Notice

    « vitest-unit-testing-cursorrules-prompt-file » (PatrickJS, CC0-1.0) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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