[test] Run tests with vitest

.circleci/config.yml

@@ -150,17 +150,17 @@ jobs:
       - install_js:
           react-version: << parameters.react-version >>
       - run:
-          name: Tests fake browser
-          command: pnpm test:coverage:ci
+          name: Run tests on JSDOM
+          command: pnpm test:jsdom --coverage
       - run:
-          name: Check coverage generated
+          name: Check if coverage report is generated
           command: |
             if ! [[ -s coverage/lcov.info ]]
             then
               exit 1
             fi
       - run:
-          name: Coverage
+          name: Upload coverage report to Codecov
           command: |
             curl -Os https://uploader.codecov.io/latest/linux/codecov
             chmod +x codecov
@@ -295,17 +295,17 @@ jobs:
           react-version: << parameters.react-version >>
           browsers: true
       - run:
-          name: Tests real browsers
-          command: pnpm test:karma
+          name: Run tests on headless Chromium
+          command: pnpm test:chromium --coverage
       - run:
-          name: Check coverage generated
+          name: Check if coverage report is generated
           command: |
             if ! [[ -s coverage/lcov.info ]]
             then
               exit 1
             fi
       - run:
-          name: Coverage
+          name: Upload coverage report to Codecov
           command: |
             curl -Os https://uploader.codecov.io/latest/linux/codecov
             chmod +x codecov

docs/package.json

@@ -64,7 +64,7 @@
     "@babel/preset-typescript": "^7.24.7",
     "@mui/internal-docs-utils": "^1.0.15",
     "@mui/internal-scripts": "^1.0.25",
-    "@mui/internal-test-utils": "1.0.18",
+    "@mui/internal-test-utils": "https://pkg.csb.dev/mui/material-ui/commit/92c23999/@mui/internal-test-utils",
     "@types/chai": "^4.3.20",
     "@types/gtag.js": "^0.0.20",
     "@types/hast": "^3.0.4",

docs/src/blocks/sandbox/packDemo.test.ts

@@ -1,4 +1,4 @@
-import { describe, it } from 'mocha';
+import { describe, it } from 'vitest';
 import { expect } from 'chai';
 import { DemoFile } from 'docs/src/blocks/Demo';
 import { packDemo } from './packDemo';

docs/vitest.config.ts

@@ -0,0 +1,15 @@
+import { mergeConfig, defineProject } from 'vitest/config';
+import sharedConfig from '../vitest.shared';
+
+export default mergeConfig(
+  sharedConfig,
+  defineProject({
+    test: {
+      environment: 'node',
+      browser: {
+        enabled: false,
+        name: 'node',
+      },
+    },
+  }),
+);

package.json

@@ -60,6 +60,9 @@
     "test:regressions:server": "serve test/regressions -p 5001",
     "test:umd": "node packages/mui-material/test/umd/run.js",
     "test:unit": "cross-env NODE_ENV=test mocha 'packages/**/*.test.{js,ts,tsx}' 'docs/**/*.test.{js,ts,tsx}'",
+    "test:jsdom": "cross-env NODE_ENV=test VITEST_ENV=jsdom vitest",
+    "test:chromium": "cross-env NODE_ENV=test VITEST_ENV=chromium vitest",
+    "test:firefox": "cross-env NODE_ENV=test VITEST_ENV=firefox vitest",
     "test:argos": "node ./scripts/pushArgos.mjs",
     "typescript": "tsc -b tsconfig.json",
     "validate-declarations": "tsx scripts/validateTypescriptDeclarations.mts",
@@ -79,7 +82,7 @@
     "@mui/internal-docs-utils": "^1.0.15",
     "@mui/internal-markdown": "^1.0.18",
     "@mui/internal-scripts": "^1.0.25",
-    "@mui/internal-test-utils": "1.0.18",
+    "@mui/internal-test-utils": "https://pkg.csb.dev/mui/material-ui/commit/92c23999/@mui/internal-test-utils",
     "@mui/monorepo": "github:mui/material-ui#v6.1.5",
     "@mui/utils": "6.1.5",
     "@next/eslint-plugin-next": "^14.2.13",
@@ -93,13 +96,18 @@
     "@types/yargs": "^17.0.33",
     "@typescript-eslint/eslint-plugin": "^7.8.0",
     "@typescript-eslint/parser": "^7.8.0",
+    "@vitejs/plugin-react": "^4.3.2",
+    "@vitest/browser": "^2.1.3",
+    "@vitest/coverage-v8": "^2.1.3",
+    "@vitest/ui": "2.1.3",
     "babel-loader": "^9.2.1",
     "babel-plugin-istanbul": "^6.1.1",
     "babel-plugin-macros": "^3.1.0",
     "babel-plugin-module-resolver": "^5.0.2",
     "babel-plugin-optimize-clsx": "^2.6.2",
     "babel-plugin-react-remove-properties": "^0.3.0",
     "babel-plugin-transform-react-remove-prop-types": "^0.4.24",
+    "chai-dom": "^1.12.0",
     "chalk": "^5.3.0",
     "compression-webpack-plugin": "^11.1.0",
     "concurrently": "^8.2.2",
@@ -149,7 +157,9 @@
     "prettier-plugin-tailwindcss": "^0.6.8",
     "pretty-quick": "^4.0.0",
     "process": "^0.11.10",
+    "react": "^18.3.1",
     "react-docgen": "^5.4.3",
+    "react-dom": "^18.3.1",
     "recast": "^0.23.9",
     "remark": "^15.0.1",
     "rimraf": "^5.0.10",
@@ -163,6 +173,7 @@
     "tsx": "^4.8.2",
     "typescript": "^5.4.5",
     "unist-util-visit": "^5.0.0",
+    "vitest": "^2.1.3",
     "webpack": "^5.91.0",
     "webpack-bundle-analyzer": "^4.10.2",
     "webpack-cli": "^5.1.4",

packages/mui-base/package.json

@@ -52,7 +52,7 @@
     "use-sync-external-store": "^1.2.2"
   },
   "devDependencies": {
-    "@mui/internal-test-utils": "1.0.18",
+    "@mui/internal-test-utils": "https://pkg.csb.dev/mui/material-ui/commit/92c23999/@mui/internal-test-utils",
     "@testing-library/react": "^16.0.1",
     "@testing-library/user-event": "^14.5.2",
     "@types/chai": "^4.3.20",

packages/mui-base/src/AlertDialog/Root/AlertDialogRoot.test.ts

@@ -1 +1,5 @@
 // This file must be present for the doc gen to work
+
+describe('<AlertDialogRoot />', () => {
+  it('no-op', () => {});
+});

packages/mui-base/src/Checkbox/Root/CheckboxRoot.test.tsx

@@ -221,12 +221,7 @@ describe('<Checkbox.Root />', () => {
   });
 
   describe('form handling', () => {
-    it('should toggle the checkbox when a parent label is clicked', async function test() {
-      // Clicking the label causes unrelated browser tests to fail.
-      if (!isJSDOM) {
-        this.skip();
-      }
-
+    it('should toggle the checkbox when a parent label is clicked', async () => {
       const { getByTestId, getAllByRole } = await render(
         <label data-testid="label">
           <Checkbox.Root />
@@ -246,12 +241,7 @@ describe('<Checkbox.Root />', () => {
       expect(checkbox).to.have.attribute('aria-checked', 'true');
     });
 
-    it('should toggle the checkbox when a linked label is clicked', async function test() {
-      // Clicking the label causes unrelated browser tests to fail.
-      if (!isJSDOM) {
-        this.skip();
-      }
-
+    it('should toggle the checkbox when a linked label is clicked', async () => {
       const { getByTestId, getAllByRole } = await render(
         <div>
           <label htmlFor="test-checkbox" data-testid="label">
@@ -274,10 +264,12 @@ describe('<Checkbox.Root />', () => {
     });
   });
 
-  it('should include the checkbox value in the form submission', async function test() {
+  it('should include the checkbox value in the form submission', async function test(t = {}) {
     if (isJSDOM) {
       // FormData is not available in JSDOM
-      this.skip();
+      // @ts-expect-error to support mocha and vitest
+      // eslint-disable-next-line @typescript-eslint/no-unused-expressions
+      this?.skip?.() || t?.skip();
     }
 
     let stringifiedFormData = '';

packages/mui-base/src/Collapsible/Root/CollapsibleRoot.test.tsx

@@ -2,7 +2,7 @@
 import * as React from 'react';
 import { expect } from 'chai';
 import { spy } from 'sinon';
-import { createRenderer, act } from '@mui/internal-test-utils';
+import { createRenderer, act, describeSkipIf } from '@mui/internal-test-utils';
 import { Collapsible } from '@base_ui/react/Collapsible';
 import { describeConformance } from '../../../test/describeConformance';
 
@@ -20,7 +20,7 @@ describe('<Collapsible.Root />', () => {
   describe('ARIA attributes', () => {
     it('sets ARIA attributes', async () => {
       const { getByTestId, getByRole } = await render(
-        <Collapsible.Root>
+        <Collapsible.Root animated={false}>
           <Collapsible.Trigger />
           <Collapsible.Content data-testid="content" />
         </Collapsible.Root>,
@@ -64,7 +64,13 @@ describe('<Collapsible.Root />', () => {
       expect(content).to.have.attribute('hidden');
     });
 
-    it('uncontrolled mode', async () => {
+    it('uncontrolled mode', async function test(t = {}) {
+      if (/jsdom/.test(window.navigator.userAgent)) {
+        // @ts-expect-error to support mocha and vitest
+        // eslint-disable-next-line @typescript-eslint/no-unused-expressions
+        this?.skip?.() || t?.skip();
+      }
+
       const { getByTestId, getByRole, user } = await render(
         <Collapsible.Root defaultOpen={false} animated={false}>
           <Collapsible.Trigger />
@@ -93,7 +99,7 @@ describe('<Collapsible.Root />', () => {
     });
   });
 
-  describe('keyboard interactions', () => {
+  describeSkipIf(/jsdom/.test(window.navigator.userAgent))('keyboard interactions', () => {
     ['Enter', 'Space'].forEach((key) => {
       it(`key: ${key} should toggle the Collapsible`, async () => {
         const { getByTestId, getByRole, user } = await render(
@@ -128,10 +134,12 @@ describe('<Collapsible.Root />', () => {
   });
 
   describe('prop: htmlHidden', () => {
-    it('supports "hidden until found" state', async function test() {
+    it('supports "hidden until found" state', async function test(t = {}) {
       // we test firefox in browserstack which does not support this yet
-      if (!('onbeforematch' in window)) {
-        this.skip();
+      if (!('onbeforematch' in window) || /jsdom/.test(window.navigator.userAgent)) {
+        // @ts-expect-error to support mocha and vitest
+        // eslint-disable-next-line @typescript-eslint/no-unused-expressions
+        this?.skip?.() || t?.skip();
       }
 
       const handleOpenChange = spy();

packages/mui-base/src/Dialog/Root/DialogRoot.test.tsx

@@ -1,7 +1,7 @@
 import * as React from 'react';
 import { expect } from 'chai';
 import { spy } from 'sinon';
-import { act, fireEvent, waitFor } from '@mui/internal-test-utils';
+import { act, describeSkipIf, fireEvent, waitFor } from '@mui/internal-test-utils';
 import { Dialog } from '@base_ui/react/Dialog';
 import { createRenderer } from '#test-utils';
 
@@ -123,13 +123,7 @@ describe('<Dialog.Root />', () => {
     });
   });
 
-  describe('prop: animated', () => {
-    before(function test() {
-      if (/jsdom/.test(window.navigator.userAgent)) {
-        this.skip();
-      }
-    });
-
+  describeSkipIf(/jsdom/.test(window.navigator.userAgent))('prop: animated', () => {
     const css = `
     .dialog {
       opacity: 0;
@@ -168,13 +162,7 @@ describe('<Dialog.Root />', () => {
     });
   });
 
-  describe('focus management', () => {
-    before(function test() {
-      if (/jsdom/.test(window.navigator.userAgent)) {
-        this.skip();
-      }
-    });
-
+  describeSkipIf(/jsdom/.test(window.navigator.userAgent))('focus management', () => {
     it('should focus the first focusable element within the popup', async () => {
       const { getByText, getByTestId } = await render(
         <div>

packages/mui-base/src/Menu/CheckboxItem/MenuCheckboxItem.test.tsx

@@ -46,9 +46,11 @@ describe('<Menu.CheckboxItem />', () => {
     refInstanceof: window.HTMLDivElement,
   }));
 
-  it('perf: does not rerender menu items unnecessarily', async function test() {
+  it('perf: does not rerender menu items unnecessarily', async function test(t = {}) {
     if (/jsdom/.test(window.navigator.userAgent)) {
-      this.skip();
+      // @ts-expect-error to support mocha and vitest
+      // eslint-disable-next-line @typescript-eslint/no-unused-expressions
+      this?.skip?.() || t?.skip();
     }
 
     const renderItem1Spy = spy();

packages/mui-base/src/Menu/Item/MenuItem.test.tsx

@@ -46,9 +46,11 @@ describe('<Menu.Item />', () => {
     refInstanceof: window.HTMLDivElement,
   }));
 
-  it('perf: does not rerender menu items unnecessarily', async function test() {
+  it('perf: does not rerender menu items unnecessarily', async function test(t = {}) {
     if (/jsdom/.test(window.navigator.userAgent)) {
-      this.skip();
+      // @ts-expect-error to support mocha and vitest
+      // eslint-disable-next-line @typescript-eslint/no-unused-expressions
+      this?.skip?.() || t?.skip();
     }
 
     const renderItem1Spy = spy();

packages/mui-base/src/Menu/Positioner/MenuPositioner.test.tsx

@@ -45,16 +45,18 @@ describe('<Menu.Positioner />', () => {
   }));
 
   describe('prop: anchor', () => {
-    it('should be placed near the specified element when a ref is passed', async function test() {
+    it('should be placed near the specified element when a ref is passed', async function test(t = {}) {
       if (/jsdom/.test(window.navigator.userAgent)) {
-        this.skip();
+        // @ts-expect-error to support mocha and vitest
+        // eslint-disable-next-line @typescript-eslint/no-unused-expressions
+        this?.skip?.() || t?.skip();
       }
 
       function TestComponent() {
         const anchor = React.useRef<HTMLDivElement | null>(null);
 
         return (
-          <div>
+          <div style={{ margin: '50px' }}>
             <Menu.Root open animated={false}>
               <Menu.Positioner side="bottom" alignment="start" anchor={anchor} arrowPadding={0}>
                 <Menu.Popup>
@@ -82,9 +84,11 @@ describe('<Menu.Positioner />', () => {
       );
     });
 
-    it('should be placed near the specified element when an element is passed', async function test() {
+    it('should be placed near the specified element when an element is passed', async function test(t = {}) {
       if (/jsdom/.test(window.navigator.userAgent)) {
-        this.skip();
+        // @ts-expect-error to support mocha and vitest
+        // eslint-disable-next-line @typescript-eslint/no-unused-expressions
+        this?.skip?.() || t?.skip();
       }
 
       function TestComponent() {
@@ -94,7 +98,7 @@ describe('<Menu.Positioner />', () => {
         }, []);
 
         return (
-          <div>
+          <div style={{ margin: '50px' }}>
             <Menu.Root open animated={false}>
               <Menu.Positioner side="bottom" alignment="start" anchor={anchor} arrowPadding={0}>
                 <Menu.Popup>
@@ -122,9 +126,11 @@ describe('<Menu.Positioner />', () => {
       );
     });
 
-    it('should be placed near the specified element when a function returingn an element is passed', async function test() {
+    it('should be placed near the specified element when a function returning an element is passed', async function test(t = {}) {
       if (/jsdom/.test(window.navigator.userAgent)) {
-        this.skip();
+        // @ts-expect-error to support mocha and vitest
+        // eslint-disable-next-line @typescript-eslint/no-unused-expressions
+        this?.skip?.() || t?.skip();
       }
 
       function TestComponent() {
@@ -136,7 +142,7 @@ describe('<Menu.Positioner />', () => {
         const getAnchor = React.useCallback(() => anchor, [anchor]);
 
         return (
-          <div>
+          <div style={{ margin: '50px' }}>
             <Menu.Root open animated={false}>
               <Menu.Positioner side="bottom" alignment="start" anchor={getAnchor} arrowPadding={0}>
                 <Menu.Popup>
@@ -164,9 +170,11 @@ describe('<Menu.Positioner />', () => {
       );
     });
 
-    it('should be placed at the specified position', async function test() {
+    it('should be placed at the specified position', async function test(t = {}) {
       if (/jsdom/.test(window.navigator.userAgent)) {
-        this.skip();
+        // @ts-expect-error to support mocha and vitest
+        // eslint-disable-next-line @typescript-eslint/no-unused-expressions
+        this?.skip?.() || t?.skip();
       }
 
       const boundingRect = {