Setup

1. npm install -D vitest @testing-library/react @testing-library/jest-dom jsdom
2. pada vite.config.ts, masukkan config “test”

export default defineConfig({
  plugins: [react()],
  resolve: {
    alias: {
      "@": root,
    } as AliasOptions,
  },
  test: {
    environment: 'jsdom',
    globals: true,
    setupFiles: '/src/tests/setup.ts', // bisa array | string
  }
} as UserConfig)

3. tambahkan file pada src/tests/setup.ts

import { afterEach } from 'vitest'
import { cleanup } from '@testing-library/react'
import '@testing-library/jest-dom/vitest'

// runs a clean after each test case (e.g. clearing jsdom)
afterEach(() => {
  cleanup()
})