vitest.shared.mts

import { resolve, dirname } from 'node:path';
import { fileURLToPath } from 'node:url';
import { defineConfig } from 'vitest/config';

const CURRENT_DIR = dirname(fileURLToPath(import.meta.url));
const WORKSPACE_ROOT = resolve(CURRENT_DIR, './');

export default defineConfig({
  // We seem to need both this and the `env` property below to make it work.
  define: {
    'process.env.NODE_ENV': '"test"',
    LICENSE_DISABLE_CHECK: 'false',
  },
  esbuild: {
    minifyIdentifiers: false,
    keepNames: true,
  },
  resolve: {
    alias: [
      // Generates resolver aliases for all packages and their plans.
      ...[
        { lib: 'x-charts', plans: ['pro'] },
        { lib: 'x-date-pickers', plans: ['pro'] },
        { lib: 'x-tree-view', plans: ['pro'] },
        { lib: 'x-data-grid', plans: ['pro', 'premium', 'generator'] },
        { lib: 'x-internals' },
        { lib: 'x-license' },
        { lib: 'x-telemetry' },
      ].flatMap((v) => {
        return [
          {
            find: `@mui/${v.lib}`,
            replacement: resolve(WORKSPACE_ROOT, `./packages/${v.lib}/src`),
          },
          ...(v.plans ?? []).map((plan) => ({
            find: `@mui/${v.lib}-${plan}`,
            replacement: resolve(WORKSPACE_ROOT, `./packages/${v.lib}-${plan}/src`),
          })),
        ];
      }),
      {
        find: 'test/utils',
        replacement: new URL('./test/utils', import.meta.url).pathname,
      },
    ],
  },
  test: {
    globals: true,
    setupFiles: [new URL('test/setupVitest.ts', import.meta.url).pathname],
    // Required for some tests that contain early returns or conditional tests.
    passWithNoTests: true,
    env: {
      NODE_ENV: 'test',
    },
    browser: {
      isolate: false,
      provider: 'playwright',
      headless: true,
      screenshotFailures: false,
    },
    // Disable isolation to speed up the tests.
    isolate: false,
    // Performance improvements for the tests.
    // https://vitest.dev/guide/improving-performance.html#improving-performance
    ...(process.env.CI && {
      // Important to avoid timeouts on CI.
      fileParallelism: false,
      // Increase the timeout for the tests due to slow CI machines.
      testTimeout: 30000,
      // Retry failed tests up to 3 times. This is useful for flaky tests.
      retry: 3,
      // Reduce the number of workers to avoid CI timeouts.
      poolOptions: {
        forks: {
          singleFork: true,
        },
        threads: {
          singleThread: true,
        },
      },
    }),
    exclude: ['**/*.spec.{js,ts,tsx}', '**/node_modules/**', '**/dist/**'],
  },
});