packages/webview_flutter/webview_flutter/example/test/main_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:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:webview_flutter_example/main.dart';
import 'package:webview_flutter_platform_interface/webview_flutter_platform_interface.dart';

void main() {
  setUp(() {
    WebViewPlatform.instance = FakeWebViewPlatform();
  });

  testWidgets('Test snackbar from ScaffoldMessenger',
      (WidgetTester tester) async {
    await tester.pumpWidget(const MaterialApp(home: WebViewExample()));
    expect(find.byIcon(Icons.favorite), findsOneWidget);
    await tester.tap(find.byIcon(Icons.favorite));
    await tester.pump();
    expect(find.byType(SnackBar), findsOneWidget);
  });
}

class FakeWebViewPlatform extends WebViewPlatform {
  @override
  PlatformWebViewController createPlatformWebViewController(
    PlatformWebViewControllerCreationParams params,
  ) {
    return FakeWebViewController(params);
  }

  @override
  PlatformWebViewWidget createPlatformWebViewWidget(
    PlatformWebViewWidgetCreationParams params,
  ) {
    return FakeWebViewWidget(params);
  }

  @override
  PlatformWebViewCookieManager createPlatformCookieManager(
    PlatformWebViewCookieManagerCreationParams params,
  ) {
    return FakeCookieManager(params);
  }

  @override
  PlatformNavigationDelegate createPlatformNavigationDelegate(
    PlatformNavigationDelegateCreationParams params,
  ) {
    return FakeNavigationDelegate(params);
  }
}

class FakeWebViewController extends PlatformWebViewController {
  FakeWebViewController(super.params) : super.implementation();

  @override
  Future<void> setJavaScriptMode(JavaScriptMode javaScriptMode) async {}

  @override
  Future<void> setBackgroundColor(Color color) async {}

  @override
  Future<void> setPlatformNavigationDelegate(
    PlatformNavigationDelegate handler,
  ) async {}

  @override
  Future<void> addJavaScriptChannel(
      JavaScriptChannelParams javaScriptChannelParams) async {}

  @override
  Future<void> loadRequest(LoadRequestParams params) async {}

  @override
  Future<String?> currentUrl() async {
    return 'https://www.google.com';
  }
}

class FakeCookieManager extends PlatformWebViewCookieManager {
  FakeCookieManager(super.params) : super.implementation();
}

class FakeWebViewWidget extends PlatformWebViewWidget {
  FakeWebViewWidget(super.params) : super.implementation();

  @override
  Widget build(BuildContext context) {
    return Container();
  }
}

class FakeNavigationDelegate extends PlatformNavigationDelegate {
  FakeNavigationDelegate(super.params) : super.implementation();

  @override
  Future<void> setOnNavigationRequest(
    NavigationRequestCallback onNavigationRequest,
  ) async {}

  @override
  Future<void> setOnPageFinished(PageEventCallback onPageFinished) async {}

  @override
  Future<void> setOnPageStarted(PageEventCallback onPageStarted) async {}

  @override
  Future<void> setOnProgress(ProgressCallback onProgress) async {}

  @override
  Future<void> setOnWebResourceError(
    WebResourceErrorCallback onWebResourceError,
  ) async {}
}