[infra] Improve test setup (#18228)

Co-authored-by: Jose C Quintas Jr <[email protected]>

Author: LukasTy

packages/x-date-pickers-pro/vitest.config.browser.mts

@@ -7,6 +7,7 @@ export default mergeConfig(sharedConfig, {
   test: {
     name: getTestName(import.meta.url),
     environment: 'browser',
+    setupFiles: [new URL('../../test/utils/setupPickers.js', import.meta.url).pathname],
     browser: {
       enabled: true,
       instances: [

packages/x-date-pickers-pro/vitest.config.jsdom.mts

@@ -6,5 +6,6 @@ export default mergeConfig(sharedConfig, {
   test: {
     name: getTestName(import.meta.url),
     environment: 'jsdom',
+    setupFiles: [new URL('../../test/utils/setupPickers.js', import.meta.url).pathname],
   },
 });

packages/x-date-pickers/vitest.config.browser.mts

@@ -18,6 +18,7 @@ export default mergeConfig(sharedConfig, {
   test: {
     name: getTestName(import.meta.url),
     environment: 'browser',
+    setupFiles: [new URL('../../test/utils/setupPickers.js', import.meta.url).pathname],
     browser: {
       enabled: true,
       instances: [

packages/x-date-pickers/vitest.config.jsdom.mts

@@ -24,5 +24,6 @@ export default mergeConfig(sharedConfig, {
   test: {
     name: getTestName(import.meta.url),
     environment: 'jsdom',
+    setupFiles: [new URL('../../test/utils/setupPickers.js', import.meta.url).pathname],
   },
 });

test/setupVitest.ts

@@ -1,6 +1,5 @@
 import { beforeAll, afterAll } from 'vitest';
 import 'test/utils/addChaiAssertions';
-import 'test/utils/setupPickers';
 import 'test/utils/licenseRelease';
 import { generateTestLicenseKey, setupTestLicenseKey } from 'test/utils/testLicense';
 import { configure } from '@mui/internal-test-utils';
@@ -58,10 +57,8 @@ if (!globalThis.after) {
   (globalThis as any).after = afterAll;
 }
 
-const isJsdom = typeof window !== 'undefined' && window.navigator.userAgent.includes('jsdom');
-
 // Only necessary when not in browser mode.
-if (isJsdom) {
+if (isJSDOM) {
   class Touch {
     instance: any;
 

vitest.shared.mts

@@ -79,6 +79,13 @@ export default defineConfig({
       provider: 'playwright',
       headless: true,
       screenshotFailures: false,
+      orchestratorScripts: [
+        {
+          id: 'vitest-reload-on-error',
+          content: `window.addEventListener('vite:preloadError', (event) => { window.location.reload(); });`,
+          async: true,
+        },
+      ],
     },
     // Disable isolation to speed up the tests.
     isolate: false,