// // 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 'dart:math';
// import 'dart:typed_data';

// import 'package:flutter/services.dart';
// import 'package:flutter/src/foundation/basic_types.dart';
// import 'package:flutter/src/gestures/recognizer.dart';
// import 'package:flutter/widgets.dart';
// import 'package:flutter_test/flutter_test.dart';
// import 'package:webview_flutter/platform_interface.dart';
// import 'package:webview_flutter/webview_flutter.dart';

// typedef void VoidCallback();

// void main() {
//   TestWidgetsFlutterBinding.ensureInitialized();

//   final _FakePlatformViewsController fakePlatformViewsController =
//       _FakePlatformViewsController();

//   final _FakeCookieManager _fakeCookieManager = _FakeCookieManager();

//   setUpAll(() {
//     SystemChannels.platform_views.setMockMethodCallHandler(
//         fakePlatformViewsController.fakePlatformViewsMethodHandler);
//     SystemChannels.platform
//         .setMockMethodCallHandler(_fakeCookieManager.onMethodCall);
//   });

//   setUp(() {
//     fakePlatformViewsController.reset();
//     _fakeCookieManager.reset();
//   });

//   testWidgets('Create WebView', (WidgetTester tester) async {
//     await tester.pumpWidget(const WebView());
//   });

//   testWidgets('Initial url', (WidgetTester tester) async {
//     late WebViewController controller;
//     await tester.pumpWidget(
//       WebView(
//         initialUrl: 'https://youtube.com',
//         onWebViewCreated: (WebViewController webViewController) {
//           controller = webViewController;
//         },
//       ),
//     );

//     expect(await controller.currentUrl(), 'https://youtube.com');
//   });

//   testWidgets('Javascript mode', (WidgetTester tester) async {
//     await tester.pumpWidget(const WebView(
//       initialUrl: 'https://youtube.com',
//       javascriptMode: JavascriptMode.unrestricted,
//     ));

//     final FakePlatformWebView platformWebView =
//         fakePlatformViewsController.lastCreatedView!;

//     expect(platformWebView.javascriptMode, JavascriptMode.unrestricted);

//     await tester.pumpWidget(const WebView(
//       initialUrl: 'https://youtube.com',
//       javascriptMode: JavascriptMode.disabled,
//     ));
//     expect(platformWebView.javascriptMode, JavascriptMode.disabled);
//   });

//   testWidgets('Load url', (WidgetTester tester) async {
//     WebViewController? controller;
//     await tester.pumpWidget(
//       WebView(
//         onWebViewCreated: (WebViewController webViewController) {
//           controller = webViewController;
//         },
//       ),
//     );

//     expect(controller, isNotNull);

//     await controller!.loadUrl('https://flutter.io');

//     expect(await controller!.currentUrl(), 'https://flutter.io');
//   });

//   testWidgets('Invalid urls', (WidgetTester tester) async {
//     WebViewController? controller;
//     await tester.pumpWidget(
//       WebView(
//         onWebViewCreated: (WebViewController webViewController) {
//           controller = webViewController;
//         },
//       ),
//     );

//     expect(controller, isNotNull);

//     expect(await controller!.currentUrl(), isNull);

//     expect(() => controller!.loadUrl(''), throwsA(anything));
//     expect(await controller!.currentUrl(), isNull);

//     // Missing schema.
//     expect(() => controller!.loadUrl('flutter.io'), throwsA(anything));
//     expect(await controller!.currentUrl(), isNull);
//   });

//   testWidgets('Headers in loadUrl', (WidgetTester tester) async {
//     WebViewController? controller;
//     await tester.pumpWidget(
//       WebView(
//         onWebViewCreated: (WebViewController webViewController) {
//           controller = webViewController;
//         },
//       ),
//     );

//     expect(controller, isNotNull);

//     final Map<String, String> headers = <String, String>{
//       'CACHE-CONTROL': 'ABC'
//     };
//     await controller!.loadUrl('https://flutter.io', headers: headers);
//     expect(await controller!.currentUrl(), equals('https://flutter.io'));
//   });

//   testWidgets("Can't go back before loading a page",
//       (WidgetTester tester) async {
//     WebViewController? controller;
//     await tester.pumpWidget(
//       WebView(
//         onWebViewCreated: (WebViewController webViewController) {
//           controller = webViewController;
//         },
//       ),
//     );

//     expect(controller, isNotNull);

//     final bool canGoBackNoPageLoaded = await controller!.canGoBack();

//     expect(canGoBackNoPageLoaded, false);
//   });

//   testWidgets("Clear Cache", (WidgetTester tester) async {
//     WebViewController? controller;
//     await tester.pumpWidget(
//       WebView(
//         onWebViewCreated: (WebViewController webViewController) {
//           controller = webViewController;
//         },
//       ),
//     );

//     expect(controller, isNotNull);
//     expect(fakePlatformViewsController.lastCreatedView!.hasCache, true);

//     await controller!.clearCache();

//     expect(fakePlatformViewsController.lastCreatedView!.hasCache, false);
//   });

//   testWidgets("Can't go back with no history", (WidgetTester tester) async {
//     WebViewController? controller;
//     await tester.pumpWidget(
//       WebView(
//         initialUrl: 'https://flutter.io',
//         onWebViewCreated: (WebViewController webViewController) {
//           controller = webViewController;
//         },
//       ),
//     );

//     expect(controller, isNotNull);
//     final bool canGoBackFirstPageLoaded = await controller!.canGoBack();

//     expect(canGoBackFirstPageLoaded, false);
//   });

//   testWidgets('Can go back', (WidgetTester tester) async {
//     WebViewController? controller;
//     await tester.pumpWidget(
//       WebView(
//         initialUrl: 'https://flutter.io',
//         onWebViewCreated: (WebViewController webViewController) {
//           controller = webViewController;
//         },
//       ),
//     );

//     expect(controller, isNotNull);

//     await controller!.loadUrl('https://www.google.com');
//     final bool canGoBackSecondPageLoaded = await controller!.canGoBack();

//     expect(canGoBackSecondPageLoaded, true);
//   });

//   testWidgets("Can't go forward before loading a page",
//       (WidgetTester tester) async {
//     WebViewController? controller;
//     await tester.pumpWidget(
//       WebView(
//         onWebViewCreated: (WebViewController webViewController) {
//           controller = webViewController;
//         },
//       ),
//     );

//     expect(controller, isNotNull);

//     final bool canGoForwardNoPageLoaded = await controller!.canGoForward();

//     expect(canGoForwardNoPageLoaded, false);
//   });

//   testWidgets("Can't go forward with no history", (WidgetTester tester) async {
//     WebViewController? controller;
//     await tester.pumpWidget(
//       WebView(
//         initialUrl: 'https://flutter.io',
//         onWebViewCreated: (WebViewController webViewController) {
//           controller = webViewController;
//         },
//       ),
//     );

//     expect(controller, isNotNull);
//     final bool canGoForwardFirstPageLoaded = await controller!.canGoForward();

//     expect(canGoForwardFirstPageLoaded, false);
//   });

//   testWidgets('Can go forward', (WidgetTester tester) async {
//     WebViewController? controller;
//     await tester.pumpWidget(
//       WebView(
//         initialUrl: 'https://flutter.io',
//         onWebViewCreated: (WebViewController webViewController) {
//           controller = webViewController;
//         },
//       ),
//     );

//     expect(controller, isNotNull);

//     await controller!.loadUrl('https://youtube.com');
//     await controller!.goBack();
//     final bool canGoForwardFirstPageBacked = await controller!.canGoForward();

//     expect(canGoForwardFirstPageBacked, true);
//   });

//   testWidgets('Go back', (WidgetTester tester) async {
//     WebViewController? controller;
//     await tester.pumpWidget(
//       WebView(
//         initialUrl: 'https://youtube.com',
//         onWebViewCreated: (WebViewController webViewController) {
//           controller = webViewController;
//         },
//       ),
//     );

//     expect(controller, isNotNull);

//     expect(await controller!.currentUrl(), 'https://youtube.com');

//     await controller!.loadUrl('https://flutter.io');

//     expect(await controller!.currentUrl(), 'https://flutter.io');

//     await controller!.goBack();

//     expect(await controller!.currentUrl(), 'https://youtube.com');
//   });

//   testWidgets('Go forward', (WidgetTester tester) async {
//     WebViewController? controller;
//     await tester.pumpWidget(
//       WebView(
//         initialUrl: 'https://youtube.com',
//         onWebViewCreated: (WebViewController webViewController) {
//           controller = webViewController;
//         },
//       ),
//     );

//     expect(controller, isNotNull);

//     expect(await controller!.currentUrl(), 'https://youtube.com');

//     await controller!.loadUrl('https://flutter.io');

//     expect(await controller!.currentUrl(), 'https://flutter.io');

//     await controller!.goBack();

//     expect(await controller!.currentUrl(), 'https://youtube.com');

//     await controller!.goForward();

//     expect(await controller!.currentUrl(), 'https://flutter.io');
//   });

//   testWidgets('Current URL', (WidgetTester tester) async {
//     WebViewController? controller;
//     await tester.pumpWidget(
//       WebView(
//         onWebViewCreated: (WebViewController webViewController) {
//           controller = webViewController;
//         },
//       ),
//     );

//     expect(controller, isNotNull);

//     // Test a WebView without an explicitly set first URL.
//     expect(await controller!.currentUrl(), isNull);

//     await controller!.loadUrl('https://youtube.com');
//     expect(await controller!.currentUrl(), 'https://youtube.com');

//     await controller!.loadUrl('https://flutter.io');
//     expect(await controller!.currentUrl(), 'https://flutter.io');

//     await controller!.goBack();
//     expect(await controller!.currentUrl(), 'https://youtube.com');
//   });

//   testWidgets('Reload url', (WidgetTester tester) async {
//     late WebViewController controller;
//     await tester.pumpWidget(
//       WebView(
//         initialUrl: 'https://flutter.io',
//         onWebViewCreated: (WebViewController webViewController) {
//           controller = webViewController;
//         },
//       ),
//     );

//     final FakePlatformWebView platformWebView =
//         fakePlatformViewsController.lastCreatedView!;

//     expect(platformWebView.currentUrl, 'https://flutter.io');
//     expect(platformWebView.amountOfReloadsOnCurrentUrl, 0);

//     await controller.reload();

//     expect(platformWebView.currentUrl, 'https://flutter.io');
//     expect(platformWebView.amountOfReloadsOnCurrentUrl, 1);

//     await controller.loadUrl('https://youtube.com');

//     expect(platformWebView.amountOfReloadsOnCurrentUrl, 0);
//   });

//   testWidgets('evaluate Javascript', (WidgetTester tester) async {
//     late WebViewController controller;
//     await tester.pumpWidget(
//       WebView(
//         initialUrl: 'https://flutter.io',
//         javascriptMode: JavascriptMode.unrestricted,
//         onWebViewCreated: (WebViewController webViewController) {
//           controller = webViewController;
//         },
//       ),
//     );
//     expect(
//         await controller.evaluateJavascript("fake js string"), "fake js string",
//         reason: 'should get the argument');
//   });

//   testWidgets('evaluate Javascript with JavascriptMode disabled',
//       (WidgetTester tester) async {
//     late WebViewController controller;
//     await tester.pumpWidget(
//       WebView(
//         initialUrl: 'https://flutter.io',
//         javascriptMode: JavascriptMode.disabled,
//         onWebViewCreated: (WebViewController webViewController) {
//           controller = webViewController;
//         },
//       ),
//     );
//     expect(
//       () => controller.evaluateJavascript('fake js string'),
//       throwsA(anything),
//     );
//   });

//   testWidgets('Cookies can be cleared once', (WidgetTester tester) async {
//     await tester.pumpWidget(
//       const WebView(
//         initialUrl: 'https://flutter.io',
//       ),
//     );
//     final CookieManager cookieManager = CookieManager();
//     final bool hasCookies = await cookieManager.clearCookies();
//     expect(hasCookies, true);
//   });

//   testWidgets('Second cookie clear does not have cookies',
//       (WidgetTester tester) async {
//     await tester.pumpWidget(
//       const WebView(
//         initialUrl: 'https://flutter.io',
//       ),
//     );
//     final CookieManager cookieManager = CookieManager();
//     final bool hasCookies = await cookieManager.clearCookies();
//     expect(hasCookies, true);
//     final bool hasCookiesSecond = await cookieManager.clearCookies();
//     expect(hasCookiesSecond, false);
//   });

//   testWidgets('Initial JavaScript channels', (WidgetTester tester) async {
//     await tester.pumpWidget(
//       WebView(
//         initialUrl: 'https://youtube.com',
//         javascriptChannels: <JavascriptChannel>{
//           JavascriptChannel(
//               name: 'Tts', onMessageReceived: (JavascriptMessage msg) {}),
//           JavascriptChannel(
//               name: 'Alarm', onMessageReceived: (JavascriptMessage msg) {}),
//         },
//       ),
//     );

//     final FakePlatformWebView platformWebView =
//         fakePlatformViewsController.lastCreatedView!;

//     expect(platformWebView.javascriptChannelNames,
//         unorderedEquals(<String>['Tts', 'Alarm']));
//   });

//   test('Only valid JavaScript channel names are allowed', () {
//     final JavascriptMessageHandler noOp = (JavascriptMessage msg) {};
//     JavascriptChannel(name: 'Tts1', onMessageReceived: noOp);
//     JavascriptChannel(name: '_Alarm', onMessageReceived: noOp);
//     JavascriptChannel(name: 'foo_bar_', onMessageReceived: noOp);

//     VoidCallback createChannel(String name) {
//       return () {
//         JavascriptChannel(name: name, onMessageReceived: noOp);
//       };
//     }

//     expect(createChannel('1Alarm'), throwsAssertionError);
//     expect(createChannel('foo.bar'), throwsAssertionError);
//     expect(createChannel(''), throwsAssertionError);
//   });

//   testWidgets('Unique JavaScript channel names are required',
//       (WidgetTester tester) async {
//     await tester.pumpWidget(
//       WebView(
//         initialUrl: 'https://youtube.com',
//         javascriptChannels: <JavascriptChannel>{
//           JavascriptChannel(
//               name: 'Alarm', onMessageReceived: (JavascriptMessage msg) {}),
//           JavascriptChannel(
//               name: 'Alarm', onMessageReceived: (JavascriptMessage msg) {}),
//         },
//       ),
//     );
//     expect(tester.takeException(), isNot(null));
//   });

//   testWidgets('JavaScript channels update', (WidgetTester tester) async {
//     await tester.pumpWidget(
//       WebView(
//         initialUrl: 'https://youtube.com',
//         javascriptChannels: <JavascriptChannel>{
//           JavascriptChannel(
//               name: 'Tts', onMessageReceived: (JavascriptMessage msg) {}),
//           JavascriptChannel(
//               name: 'Alarm', onMessageReceived: (JavascriptMessage msg) {}),
//         },
//       ),
//     );

//     await tester.pumpWidget(
//       WebView(
//         initialUrl: 'https://youtube.com',
//         javascriptChannels: <JavascriptChannel>{
//           JavascriptChannel(
//               name: 'Tts', onMessageReceived: (JavascriptMessage msg) {}),
//           JavascriptChannel(
//               name: 'Alarm2', onMessageReceived: (JavascriptMessage msg) {}),
//           JavascriptChannel(
//               name: 'Alarm3', onMessageReceived: (JavascriptMessage msg) {}),
//         },
//       ),
//     );

//     final FakePlatformWebView platformWebView =
//         fakePlatformViewsController.lastCreatedView!;

//     expect(platformWebView.javascriptChannelNames,
//         unorderedEquals(<String>['Tts', 'Alarm2', 'Alarm3']));
//   });

//   testWidgets('Remove all JavaScript channels and then add',
//       (WidgetTester tester) async {
//     // This covers a specific bug we had where after updating javascriptChannels to null,
//     // updating it again with a subset of the previously registered channels fails as the
//     // widget's cache of current channel wasn't properly updated when updating javascriptChannels to
//     // null.
//     await tester.pumpWidget(
//       WebView(
//         initialUrl: 'https://youtube.com',
//         javascriptChannels: <JavascriptChannel>{
//           JavascriptChannel(
//               name: 'Tts', onMessageReceived: (JavascriptMessage msg) {}),
//         },
//       ),
//     );

//     await tester.pumpWidget(
//       const WebView(
//         initialUrl: 'https://youtube.com',
//       ),
//     );

//     await tester.pumpWidget(
//       WebView(
//         initialUrl: 'https://youtube.com',
//         javascriptChannels: <JavascriptChannel>{
//           JavascriptChannel(
//               name: 'Tts', onMessageReceived: (JavascriptMessage msg) {}),
//         },
//       ),
//     );

//     final FakePlatformWebView platformWebView =
//         fakePlatformViewsController.lastCreatedView!;

//     expect(platformWebView.javascriptChannelNames,
//         unorderedEquals(<String>['Tts']));
//   });

//   testWidgets('JavaScript channel messages', (WidgetTester tester) async {
//     final List<String> ttsMessagesReceived = <String>[];
//     final List<String> alarmMessagesReceived = <String>[];
//     await tester.pumpWidget(
//       WebView(
//         initialUrl: 'https://youtube.com',
//         javascriptChannels: <JavascriptChannel>{
//           JavascriptChannel(
//               name: 'Tts',
//               onMessageReceived: (JavascriptMessage msg) {
//                 ttsMessagesReceived.add(msg.message);
//               }),
//           JavascriptChannel(
//               name: 'Alarm',
//               onMessageReceived: (JavascriptMessage msg) {
//                 alarmMessagesReceived.add(msg.message);
//               }),
//         },
//       ),
//     );

//     final FakePlatformWebView platformWebView =
//         fakePlatformViewsController.lastCreatedView!;

//     expect(ttsMessagesReceived, isEmpty);
//     expect(alarmMessagesReceived, isEmpty);

//     platformWebView.fakeJavascriptPostMessage('Tts', 'Hello');
//     platformWebView.fakeJavascriptPostMessage('Tts', 'World');

//     expect(ttsMessagesReceived, <String>['Hello', 'World']);
//   });

//   group('$PageStartedCallback', () {
//     testWidgets('onPageStarted is not null', (WidgetTester tester) async {
//       String? returnedUrl;

//       await tester.pumpWidget(WebView(
//         initialUrl: 'https://youtube.com',
//         onPageStarted: (String url) {
//           returnedUrl = url;
//         },
//       ));

//       final FakePlatformWebView platformWebView =
//           fakePlatformViewsController.lastCreatedView!;

//       platformWebView.fakeOnPageStartedCallback();

//       expect(platformWebView.currentUrl, returnedUrl);
//     });

//     testWidgets('onPageStarted is null', (WidgetTester tester) async {
//       await tester.pumpWidget(const WebView(
//         initialUrl: 'https://youtube.com',
//         onPageStarted: null,
//       ));

//       final FakePlatformWebView platformWebView =
//           fakePlatformViewsController.lastCreatedView!;

//       // The platform side will always invoke a call for onPageStarted. This is
//       // to test that it does not crash on a null callback.
//       platformWebView.fakeOnPageStartedCallback();
//     });

//     testWidgets('onPageStarted changed', (WidgetTester tester) async {
//       String? returnedUrl;

//       await tester.pumpWidget(WebView(
//         initialUrl: 'https://youtube.com',
//         onPageStarted: (String url) {},
//       ));

//       await tester.pumpWidget(WebView(
//         initialUrl: 'https://youtube.com',
//         onPageStarted: (String url) {
//           returnedUrl = url;
//         },
//       ));

//       final FakePlatformWebView platformWebView =
//           fakePlatformViewsController.lastCreatedView!;

//       platformWebView.fakeOnPageStartedCallback();

//       expect(platformWebView.currentUrl, returnedUrl);
//     });
//   });

//   group('$PageFinishedCallback', () {
//     testWidgets('onPageFinished is not null', (WidgetTester tester) async {
//       String? returnedUrl;

//       await tester.pumpWidget(WebView(
//         initialUrl: 'https://youtube.com',
//         onPageFinished: (String url) {
//           returnedUrl = url;
//         },
//       ));

//       final FakePlatformWebView platformWebView =
//           fakePlatformViewsController.lastCreatedView!;

//       platformWebView.fakeOnPageFinishedCallback();

//       expect(platformWebView.currentUrl, returnedUrl);
//     });

//     testWidgets('onPageFinished is null', (WidgetTester tester) async {
//       await tester.pumpWidget(const WebView(
//         initialUrl: 'https://youtube.com',
//         onPageFinished: null,
//       ));

//       final FakePlatformWebView platformWebView =
//           fakePlatformViewsController.lastCreatedView!;

//       // The platform side will always invoke a call for onPageFinished. This is
//       // to test that it does not crash on a null callback.
//       platformWebView.fakeOnPageFinishedCallback();
//     });

//     testWidgets('onPageFinished changed', (WidgetTester tester) async {
//       String? returnedUrl;

//       await tester.pumpWidget(WebView(
//         initialUrl: 'https://youtube.com',
//         onPageFinished: (String url) {},
//       ));

//       await tester.pumpWidget(WebView(
//         initialUrl: 'https://youtube.com',
//         onPageFinished: (String url) {
//           returnedUrl = url;
//         },
//       ));

//       final FakePlatformWebView platformWebView =
//           fakePlatformViewsController.lastCreatedView!;

//       platformWebView.fakeOnPageFinishedCallback();

//       expect(platformWebView.currentUrl, returnedUrl);
//     });
//   });

//   group('$PageLoadingCallback', () {
//     testWidgets('onLoadingProgress is not null', (WidgetTester tester) async {
//       int? loadingProgress;

//       await tester.pumpWidget(WebView(
//         initialUrl: 'https://youtube.com',
//         onProgress: (int progress) {
//           loadingProgress = progress;
//         },
//       ));

//       final FakePlatformWebView? platformWebView =
//           fakePlatformViewsController.lastCreatedView;

//       platformWebView?.fakeOnProgressCallback(50);

//       expect(loadingProgress, 50);
//     });

//     testWidgets('onLoadingProgress is null', (WidgetTester tester) async {
//       await tester.pumpWidget(const WebView(
//         initialUrl: 'https://youtube.com',
//         onProgress: null,
//       ));

//       final FakePlatformWebView platformWebView =
//           fakePlatformViewsController.lastCreatedView!;

//       // This is to test that it does not crash on a null callback.
//       platformWebView.fakeOnProgressCallback(50);
//     });

//     testWidgets('onLoadingProgress changed', (WidgetTester tester) async {
//       int? loadingProgress;

//       await tester.pumpWidget(WebView(
//         initialUrl: 'https://youtube.com',
//         onProgress: (int progress) {},
//       ));

//       await tester.pumpWidget(WebView(
//         initialUrl: 'https://youtube.com',
//         onProgress: (int progress) {
//           loadingProgress = progress;
//         },
//       ));

//       final FakePlatformWebView platformWebView =
//           fakePlatformViewsController.lastCreatedView!;

//       platformWebView.fakeOnProgressCallback(50);

//       expect(loadingProgress, 50);
//     });
//   });

//   group('navigationDelegate', () {
//     testWidgets('hasNavigationDelegate', (WidgetTester tester) async {
//       await tester.pumpWidget(const WebView(
//         initialUrl: 'https://youtube.com',
//       ));

//       final FakePlatformWebView platformWebView =
//           fakePlatformViewsController.lastCreatedView!;

//       expect(platformWebView.hasNavigationDelegate, false);

//       await tester.pumpWidget(WebView(
//         initialUrl: 'https://youtube.com',
//         navigationDelegate: (NavigationRequest r) =>
//             NavigationDecision.navigate,
//       ));

//       expect(platformWebView.hasNavigationDelegate, true);
//     });

//     testWidgets('Block navigation', (WidgetTester tester) async {
//       final List<NavigationRequest> navigationRequests = <NavigationRequest>[];

//       await tester.pumpWidget(WebView(
//           initialUrl: 'https://youtube.com',
//           navigationDelegate: (NavigationRequest request) {
//             navigationRequests.add(request);
//             // Only allow navigating to https://flutter.dev
//             return request.url == 'https://flutter.dev'
//                 ? NavigationDecision.navigate
//                 : NavigationDecision.prevent;
//           }));

//       final FakePlatformWebView platformWebView =
//           fakePlatformViewsController.lastCreatedView!;

//       expect(platformWebView.hasNavigationDelegate, true);

//       platformWebView.fakeNavigate('https://www.google.com');
//       // The navigation delegate only allows navigation to https://flutter.dev
//       // so we should still be in https://youtube.com.
//       expect(platformWebView.currentUrl, 'https://youtube.com');
//       expect(navigationRequests.length, 1);
//       expect(navigationRequests[0].url, 'https://www.google.com');
//       expect(navigationRequests[0].isForMainFrame, true);

//       platformWebView.fakeNavigate('https://flutter.dev');
//       await tester.pump();
//       expect(platformWebView.currentUrl, 'https://flutter.dev');
//     });
//   });

//   group('debuggingEnabled', () {
//     testWidgets('enable debugging', (WidgetTester tester) async {
//       await tester.pumpWidget(const WebView(
//         debuggingEnabled: true,
//       ));

//       final FakePlatformWebView platformWebView =
//           fakePlatformViewsController.lastCreatedView!;

//       expect(platformWebView.debuggingEnabled, true);
//     });

//     testWidgets('defaults to false', (WidgetTester tester) async {
//       await tester.pumpWidget(const WebView());

//       final FakePlatformWebView platformWebView =
//           fakePlatformViewsController.lastCreatedView!;

//       expect(platformWebView.debuggingEnabled, false);
//     });

//     testWidgets('can be changed', (WidgetTester tester) async {
//       final GlobalKey key = GlobalKey();
//       await tester.pumpWidget(WebView(key: key));

//       final FakePlatformWebView platformWebView =
//           fakePlatformViewsController.lastCreatedView!;

//       await tester.pumpWidget(WebView(
//         key: key,
//         debuggingEnabled: true,
//       ));

//       expect(platformWebView.debuggingEnabled, true);

//       await tester.pumpWidget(WebView(
//         key: key,
//         debuggingEnabled: false,
//       ));

//       expect(platformWebView.debuggingEnabled, false);
//     });
//   });

//   group('Custom platform implementation', () {
//     setUpAll(() {
//       WebView.platform = MyWebViewPlatform();
//     });
//     tearDownAll(() {
//       WebView.platform = null;
//     });

//     testWidgets('creation', (WidgetTester tester) async {
//       await tester.pumpWidget(
//         const WebView(
//           initialUrl: 'https://youtube.com',
//           gestureNavigationEnabled: true,
//         ),
//       );

//       final MyWebViewPlatform builder = WebView.platform as MyWebViewPlatform;
//       final MyWebViewPlatformController platform = builder.lastPlatformBuilt!;

//       expect(
//           platform.creationParams,
//           MatchesCreationParams(CreationParams(
//             initialUrl: 'https://youtube.com',
//             webSettings: WebSettings(
//               javascriptMode: JavascriptMode.disabled,
//               hasNavigationDelegate: false,
//               debuggingEnabled: false,
//               userAgent: WebSetting<String?>.of(null),
//               gestureNavigationEnabled: true,
//             ),
//           )));
//     });

//     testWidgets('loadUrl', (WidgetTester tester) async {
//       late WebViewController controller;
//       await tester.pumpWidget(
//         WebView(
//           initialUrl: 'https://youtube.com',
//           onWebViewCreated: (WebViewController webViewController) {
//             controller = webViewController;
//           },
//         ),
//       );

//       final MyWebViewPlatform builder = WebView.platform as MyWebViewPlatform;
//       final MyWebViewPlatformController platform = builder.lastPlatformBuilt!;

//       final Map<String, String> headers = <String, String>{
//         'header': 'value',
//       };

//       await controller.loadUrl('https://google.com', headers: headers);

//       expect(platform.lastUrlLoaded, 'https://google.com');
//       expect(platform.lastRequestHeaders, headers);
//     });
//   });
//   testWidgets('Set UserAgent', (WidgetTester tester) async {
//     await tester.pumpWidget(const WebView(
//       initialUrl: 'https://youtube.com',
//       javascriptMode: JavascriptMode.unrestricted,
//     ));

//     final FakePlatformWebView platformWebView =
//         fakePlatformViewsController.lastCreatedView!;

//     expect(platformWebView.userAgent, isNull);

//     await tester.pumpWidget(const WebView(
//       initialUrl: 'https://youtube.com',
//       javascriptMode: JavascriptMode.unrestricted,
//       userAgent: 'UA',
//     ));

//     expect(platformWebView.userAgent, 'UA');
//   });
// }

// class FakePlatformWebView {
//   FakePlatformWebView(int? id, Map<dynamic, dynamic> params) {
//     if (params.containsKey('initialUrl')) {
//       final String? initialUrl = params['initialUrl'];
//       if (initialUrl != null) {
//         history.add(initialUrl);
//         currentPosition++;
//       }
//     }
//     if (params.containsKey('javascriptChannelNames')) {
//       javascriptChannelNames =
//           List<String>.from(params['javascriptChannelNames']);
//     }
//     javascriptMode = JavascriptMode.values[params['settings']['jsMode']];
//     hasNavigationDelegate =
//         params['settings']['hasNavigationDelegate'] ?? false;
//     debuggingEnabled = params['settings']['debuggingEnabled'];
//     userAgent = params['settings']['userAgent'];
//     channel = MethodChannel(
//         'plugins.flutter.io/webview_$id', const StandardMethodCodec());
//     channel.setMockMethodCallHandler(onMethodCall);
//   }

//   late MethodChannel channel;

//   List<String?> history = <String?>[];
//   int currentPosition = -1;
//   int amountOfReloadsOnCurrentUrl = 0;
//   bool hasCache = true;

//   String? get currentUrl => history.isEmpty ? null : history[currentPosition];
//   JavascriptMode? javascriptMode;
//   List<String>? javascriptChannelNames;

//   bool? hasNavigationDelegate;
//   bool? debuggingEnabled;
//   String? userAgent;

//   Future<dynamic> onMethodCall(MethodCall call) {
//     switch (call.method) {
//       case 'loadUrl':
//         final Map<dynamic, dynamic> request = call.arguments;
//         _loadUrl(request['url']);
//         return Future<void>.sync(() {});
//       case 'updateSettings':
//         if (call.arguments['jsMode'] != null) {
//           javascriptMode = JavascriptMode.values[call.arguments['jsMode']];
//         }
//         if (call.arguments['hasNavigationDelegate'] != null) {
//           hasNavigationDelegate = call.arguments['hasNavigationDelegate'];
//         }
//         if (call.arguments['debuggingEnabled'] != null) {
//           debuggingEnabled = call.arguments['debuggingEnabled'];
//         }
//         userAgent = call.arguments['userAgent'];
//         break;
//       case 'canGoBack':
//         return Future<bool>.sync(() => currentPosition > 0);
//       case 'canGoForward':
//         return Future<bool>.sync(() => currentPosition < history.length - 1);
//       case 'goBack':
//         currentPosition = max(-1, currentPosition - 1);
//         return Future<void>.sync(() {});
//       case 'goForward':
//         currentPosition = min(history.length - 1, currentPosition + 1);
//         return Future<void>.sync(() {});
//       case 'reload':
//         amountOfReloadsOnCurrentUrl++;
//         return Future<void>.sync(() {});
//       case 'currentUrl':
//         return Future<String?>.value(currentUrl);
//       case 'evaluateJavascript':
//         return Future<dynamic>.value(call.arguments);
//       case 'addJavascriptChannels':
//         final List<String> channelNames = List<String>.from(call.arguments);
//         javascriptChannelNames!.addAll(channelNames);
//         break;
//       case 'removeJavascriptChannels':
//         final List<String> channelNames = List<String>.from(call.arguments);
//         javascriptChannelNames!
//             .removeWhere((String channel) => channelNames.contains(channel));
//         break;
//       case 'clearCache':
//         hasCache = false;
//         return Future<void>.sync(() {});
//     }
//     return Future<void>.sync(() {});
//   }

//   void fakeJavascriptPostMessage(String jsChannel, String message) {
//     final StandardMethodCodec codec = const StandardMethodCodec();
//     final Map<String, dynamic> arguments = <String, dynamic>{
//       'channel': jsChannel,
//       'message': message
//     };
//     final ByteData data = codec
//         .encodeMethodCall(MethodCall('javascriptChannelMessage', arguments));
//     _ambiguate(ServicesBinding.instance)!
//         .defaultBinaryMessenger
//         .handlePlatformMessage(channel.name, data, (ByteData? data) {});
//   }

//   // Fakes a main frame navigation that was initiated by the webview, e.g when
//   // the user clicks a link in the currently loaded page.
//   void fakeNavigate(String url) {
//     if (!hasNavigationDelegate!) {
//       print('no navigation delegate');
//       _loadUrl(url);
//       return;
//     }
//     final StandardMethodCodec codec = const StandardMethodCodec();
//     final Map<String, dynamic> arguments = <String, dynamic>{
//       'url': url,
//       'isForMainFrame': true
//     };
//     final ByteData data =
//         codec.encodeMethodCall(MethodCall('navigationRequest', arguments));
//     _ambiguate(ServicesBinding.instance)!
//         .defaultBinaryMessenger
//         .handlePlatformMessage(channel.name, data, (ByteData? data) {
//       final bool allow = codec.decodeEnvelope(data!);
//       if (allow) {
//         _loadUrl(url);
//       }
//     });
//   }

//   void fakeOnPageStartedCallback() {
//     final StandardMethodCodec codec = const StandardMethodCodec();

//     final ByteData data = codec.encodeMethodCall(MethodCall(
//       'onPageStarted',
//       <dynamic, dynamic>{'url': currentUrl},
//     ));

//     _ambiguate(ServicesBinding.instance)!
//         .defaultBinaryMessenger
//         .handlePlatformMessage(
//           channel.name,
//           data,
//           (ByteData? data) {},
//         );
//   }

//   void fakeOnPageFinishedCallback() {
//     final StandardMethodCodec codec = const StandardMethodCodec();

//     final ByteData data = codec.encodeMethodCall(MethodCall(
//       'onPageFinished',
//       <dynamic, dynamic>{'url': currentUrl},
//     ));

//     _ambiguate(ServicesBinding.instance)!
//         .defaultBinaryMessenger
//         .handlePlatformMessage(
//           channel.name,
//           data,
//           (ByteData? data) {},
//         );
//   }

//   void fakeOnProgressCallback(int progress) {
//     final StandardMethodCodec codec = const StandardMethodCodec();

//     final ByteData data = codec.encodeMethodCall(MethodCall(
//       'onProgress',
//       <dynamic, dynamic>{'progress': progress},
//     ));

//     _ambiguate(ServicesBinding.instance)!
//         .defaultBinaryMessenger
//         .handlePlatformMessage(channel.name, data, (ByteData? data) {});
//   }

//   void _loadUrl(String? url) {
//     history = history.sublist(0, currentPosition + 1);
//     history.add(url);
//     currentPosition++;
//     amountOfReloadsOnCurrentUrl = 0;
//   }
// }

// class _FakePlatformViewsController {
//   FakePlatformWebView? lastCreatedView;

//   Future<dynamic> fakePlatformViewsMethodHandler(MethodCall call) {
//     switch (call.method) {
//       case 'create':
//         final Map<dynamic, dynamic> args = call.arguments;
//         final Map<dynamic, dynamic> params = _decodeParams(args['params'])!;
//         lastCreatedView = FakePlatformWebView(
//           args['id'],
//           params,
//         );
//         return Future<int>.sync(() => 1);
//       default:
//         return Future<void>.sync(() {});
//     }
//   }

//   void reset() {
//     lastCreatedView = null;
//   }
// }

// Map<dynamic, dynamic>? _decodeParams(Uint8List paramsMessage) {
//   final ByteBuffer buffer = paramsMessage.buffer;
//   final ByteData messageBytes = buffer.asByteData(
//     paramsMessage.offsetInBytes,
//     paramsMessage.lengthInBytes,
//   );
//   return const StandardMessageCodec().decodeMessage(messageBytes);
// }

// class _FakeCookieManager {
//   _FakeCookieManager() {
//     final MethodChannel channel = const MethodChannel(
//       'plugins.flutter.io/cookie_manager',
//       StandardMethodCodec(),
//     );
//     channel.setMockMethodCallHandler(onMethodCall);
//   }

//   bool hasCookies = true;

//   Future<bool> onMethodCall(MethodCall call) {
//     switch (call.method) {
//       case 'clearCookies':
//         bool hadCookies = false;
//         if (hasCookies) {
//           hadCookies = true;
//           hasCookies = false;
//         }
//         return Future<bool>.sync(() {
//           return hadCookies;
//         });
//     }
//     return Future<bool>.sync(() => true);
//   }

//   void reset() {
//     hasCookies = true;
//   }
// }

// class MyWebViewPlatform implements WebViewPlatform {
//   MyWebViewPlatformController? lastPlatformBuilt;

//   @override
//   Widget build({
//     BuildContext? context,
//     CreationParams? creationParams,
//     required WebViewPlatformCallbacksHandler webViewPlatformCallbacksHandler,
//     WebViewPlatformCreatedCallback? onWebViewPlatformCreated,
//     Set<Factory<OneSequenceGestureRecognizer>>? gestureRecognizers,
//   }) {
//     assert(onWebViewPlatformCreated != null);
//     lastPlatformBuilt = MyWebViewPlatformController(
//         creationParams, gestureRecognizers, webViewPlatformCallbacksHandler);
//     onWebViewPlatformCreated!(lastPlatformBuilt);
//     return Container();
//   }

//   @override
//   Future<bool> clearCookies() {
//     return Future<bool>.sync(() => true);
//   }
// }

// class MyWebViewPlatformController extends WebViewPlatformController {
//   MyWebViewPlatformController(this.creationParams, this.gestureRecognizers,
//       WebViewPlatformCallbacksHandler platformHandler)
//       : super(platformHandler);

//   CreationParams? creationParams;
//   Set<Factory<OneSequenceGestureRecognizer>>? gestureRecognizers;

//   String? lastUrlLoaded;
//   Map<String, String>? lastRequestHeaders;

//   @override
//   Future<void> loadUrl(String url, Map<String, String>? headers) async {
//     equals(1, 1);
//     lastUrlLoaded = url;
//     lastRequestHeaders = headers;
//   }
// }

// class MatchesWebSettings extends Matcher {
//   MatchesWebSettings(this._webSettings);

//   final WebSettings? _webSettings;

//   @override
//   Description describe(Description description) =>
//       description.add('$_webSettings');

//   @override
//   bool matches(
//       covariant WebSettings webSettings, Map<dynamic, dynamic> matchState) {
//     return _webSettings!.javascriptMode == webSettings.javascriptMode &&
//         _webSettings!.hasNavigationDelegate ==
//             webSettings.hasNavigationDelegate &&
//         _webSettings!.debuggingEnabled == webSettings.debuggingEnabled &&
//         _webSettings!.gestureNavigationEnabled ==
//             webSettings.gestureNavigationEnabled &&
//         _webSettings!.userAgent == webSettings.userAgent;
//   }
// }

// class MatchesCreationParams extends Matcher {
//   MatchesCreationParams(this._creationParams);

//   final CreationParams _creationParams;

//   @override
//   Description describe(Description description) =>
//       description.add('$_creationParams');

//   @override
//   bool matches(covariant CreationParams creationParams,
//       Map<dynamic, dynamic> matchState) {
//     return _creationParams.initialUrl == creationParams.initialUrl &&
//         MatchesWebSettings(_creationParams.webSettings)
//             .matches(creationParams.webSettings!, matchState) &&
//         orderedEquals(_creationParams.javascriptChannelNames)
//             .matches(creationParams.javascriptChannelNames, matchState);
//   }
// }

// /// This allows a value of type T or T? to be treated as a value of type T?.
// ///
// /// We use this so that APIs that have become non-nullable can still be used
// /// with `!` and `?` on the stable branch.
// // TODO(ianh): Remove this once we roll stable in late 2021.
// T? _ambiguate<T>(T? value) => value;