lib/web_ui/test/canvaskit/initialization/does_not_mock_module_exports_test.dart

// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:js/js_util.dart' as js_util;
import 'package:test/bootstrap/browser.dart';
import 'package:test/test.dart';
import 'package:ui/src/engine.dart';

void main() {
  internalBootstrapBrowserTest(() => testMain);
}

void testMain() {
  group('initializeEngineServices', () {
    test('does not mock module loaders', () async {
      // Initialize CanvasKit...
      await initializeEngineServices();

      // CanvasKitInit should be defined...
      expect(
        js_util.hasProperty(domWindow, 'CanvasKitInit'),
        isTrue,
        reason: 'CanvasKitInit should be defined on Window',
      );

      // window.exports and window.module should be undefined!
      expect(
        js_util.hasProperty(domWindow, 'exports'),
        isFalse,
        reason: '`window.exports` should not be defined.',
      );
      expect(
        js_util.hasProperty(domWindow, 'module'),
        isFalse,
        reason: '`window.module` should not be defined.',
      );
    });
  });
}