import { fileURLToPath } from 'node:url'

import { defineConfig } from 'vitest/config'

/**
 * Test configuration, kept separate from vite.config.ts so that the test options
 * are not part of the production build configuration. The type definitions of the
 * two tools overlap but are not identical, and mixing them produces confusing
 * errors about the `test` key.
 */
export default defineConfig({
  // The integration tests import the actual shipped SDK modules (sdk/src/*) to drive
  // the real custom elements. Those live one directory up, outside the web package
  // root, so Vite's default filesystem allow-list has to be widened to the repository
  // root for the cross-package import to resolve.
  server: {
    fs: {
      allow: [fileURLToPath(new URL('..', import.meta.url))],
    },
  },
  test: {
    // The admin interface is a browser application: components touch the DOM,
    // localStorage and matchMedia, so jsdom is required rather than merely useful.
    environment: 'jsdom',
    globals: true,
    setupFiles: ['./src/test/setup.ts'],
    css: false,
    // Tests live next to what they test.
    include: ['src/**/*.test.{ts,tsx}'],
  },
})