vitest-testing

Modern TypeScript/JavaScript testing with Vitest. Fast unit and integration tests, native ESM support, Vite-powered HMR, and comprehensive mocking. Use for testing TS/JS projects.

1.04x

Quality

57%

Does it follow best practices?

Impact

52%

1.04x

Average score across 3 eval scenarios

Securityby

Passed

No known issues

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tessl review fix ./plugins/vitest-testing/skills/vitest-testing/SKILL.md

Evaluation results

44%

-8%

Add Automated Testing to a TypeScript Math Utility Library

Vitest setup with Bun in TypeScript project

Criteria

Without context

With context

Uses bun to install

bun test --run in script

Coverage command

defineConfig import

100%

globals: true

100%

environment: node

100%

Coverage provider v8

100%

Coverage reporters

100%

Coverage thresholds 80

Test file naming convention

100%

include pattern

62%

12%

Add Tests for the Greeter Module

Vitest mocking, timers, and date testing

Criteria

Without context

With context

vi imported from vitest

100%

Module mock used

100%

vi.fn() in mock factory

100%

clearAllMocks in beforeEach

20%

useFakeTimers in beforeEach

restoreAllMocks in afterEach

100%

setSystemTime used

No internal mock

100%

Descriptive test names

100%

Async promise assertion

100%

describe/it structure

100%

50%

Write Tests for a String Transformation Library

Parametrized and concurrent Vitest tests

Criteria

Without context

With context

Correct test file name

100%

describe() grouping

100%

describe.each() usage

it.concurrent() usage

beforeAll() for shared setup

Descriptive test names

100%

Vitest imports

100%

vi mock for fetch

100%

Repository: secondsky/claude-skills
Commit: 5e92b71

Evaluated: 4 days ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

Add Automated Testing to a TypeScript Math Utility Library Add Tests for the Greeter Module Write Tests for a String Transformation Library

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