gen-test

name	gen-test
description	Generate a Vitest + Testing Library test file for a given source file. Use when the user runs /gen-test <file-path>.
disable-model-invocation	true
allowed-tools	Read, Write, Grep, Glob

Generate a comprehensive Vitest test for: $ARGUMENTS

Steps

1. Read the source file at $ARGUMENTS
2. Read tests/setup.ts for global test configuration
3. Glob tests/**/*.test.{ts,tsx} to find 2-3 similar existing tests as style reference
4. Determine the correct output path:
   • src/components/Foo.tsx → tests/components/Foo.test.tsx
   • src/lib/bar.ts → tests/lib/bar.test.ts
   • src/app/api/baz/route.ts → tests/api/baz.test.ts
   • src/services/foo.ts → tests/services/foo.test.ts
5. Write the test file following these conventions:

Import Order

import ComponentOrFunction from '@/path/to/source'
import { render, screen, fireEvent, waitFor } from '@testing-library/react'
import { describe, expect, it, vi, beforeEach } from 'vitest'

Mock Pattern (place before describe blocks)

vi.mock('module-name', () => ({
  ExportName: () => <div>Mock</div>,
}))

Test Coverage Requirements

• Render/call without crashing
• All props/arguments covered
• User interactions (if component)
• Loading / error / empty states (if applicable)
• Edge cases

Write the complete test file to the output path.