metabuilder/.github/prompts/test/4-test-write.prompt.md

Write Parameterized Tests

Run tests from frontends/nextjs/.

Add tests using the parameterized it.each() pattern:

import { describe, it, expect } from 'vitest'

describe('myFunction', () => {
  it.each([
    { input: 'case1', expected: 'result1' },
    { input: 'case2', expected: 'result2' },
    { input: 'edge-case', expected: 'handled' },
  ])('should handle $input', ({ input, expected }) => {
    expect(myFunction(input)).toBe(expected)
  })
})

Place test files next to source: utils.ts → utils.test.ts

Run tests:

• npm test - Watch mode
• npm run test:unit - Single run
• npm run test:coverage:report - Generate coverage markdown