[webview_flutter] 4.0.0 fails under test #117422
Description
Building a simple Flutter app based on simple_example.dart with a test fails. Test code:
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:testing_webview_flutter/main.dart';
void main() {
testWidgets('Smoke test', (WidgetTester tester) async {
// Build our app and trigger a frame.
await tester.pumpWidget(const MaterialApp(home: WebViewExample()));
});
}Stack trace:
$ flutter test
00:06 +0: Smoke test
══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
The following _CastError was thrown building Builder:
Null check operator used on a null value
The relevant error-causing widget was:
MaterialApp
MaterialApp:file:///Users/brettmorgan/Documents/flutter-projects/testing_webview_flutter/test/widget_test.dart:16:35
When the exception was thrown, this was the stack:
#0 new PlatformWebViewController (package:webview_flutter_platform_interface/src/platform_webview_controller.dart:25:33)
#1 new WebViewController.fromPlatformCreationParams (package:webview_flutter/src/webview_controller.dart:28:25)
#2 new WebViewController (package:webview_flutter/src/webview_controller.dart:20:14)
#3 _WebViewExampleState.initState (package:testing_webview_flutter/main.dart:27:18)
#4 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:5015:57)
#5 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4853:5)
... Normal element mounting (275 frames)
#280 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3863:16)
#281 MultiChildRenderObjectElement.inflateWidget (package:flutter/src/widgets/framework.dart:6435:36)
#282 MultiChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:6447:32)
... Normal element mounting (416 frames)
#698 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3863:16)
#699 Element.updateChild (package:flutter/src/widgets/framework.dart:3586:20)
#700 RenderObjectToWidgetElement._rebuild (package:flutter/src/widgets/binding.dart:1195:16)
#701 RenderObjectToWidgetElement.update (package:flutter/src/widgets/binding.dart:1172:5)
#702 RenderObjectToWidgetElement.performRebuild (package:flutter/src/widgets/binding.dart:1186:7)
#703 Element.rebuild (package:flutter/src/widgets/framework.dart:4604:5)
#704 BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2667:19)
#705 AutomatedTestWidgetsFlutterBinding.drawFrame (package:flutter_test/src/binding.dart:1191:19)
#706 RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:378:5)
#707 SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1175:15)
#708 SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1104:9)
#709 AutomatedTestWidgetsFlutterBinding.pump.<anonymous closure> (package:flutter_test/src/binding.dart:1057:9)
#712 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:71:41)
#713 AutomatedTestWidgetsFlutterBinding.pump (package:flutter_test/src/binding.dart:1043:27)
#714 WidgetTester.pumpWidget.<anonymous closure> (package:flutter_test/src/widget_tester.dart:554:22)
#717 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:71:41)
#718 WidgetTester.pumpWidget (package:flutter_test/src/widget_tester.dart:551:27)
#719 main.<anonymous closure> (file:///Users/brettmorgan/Documents/flutter-projects/testing_webview_flutter/test/widget_test.dart:16:18)
#720 testWidgets.<anonymous closure>.<anonymous closure> (package:flutter_test/src/widget_tester.dart:171:29)
<asynchronous suspension>
<asynchronous suspension>
(elided 5 frames from dart:async and package:stack_trace)
════════════════════════════════════════════════════════════════════════════════════════════════════
00:06 +0 -1: Smoke test [E]
Test failed. See exception logs above.
The test description was: Smoke test
To run this test again: /Users/brettmorgan/flutter/bin/cache/dart-sdk/bin/dart test /Users/brettmorgan/Documents/flutter-projects/testing_webview_flutter/test/widget_test.dart -p vm --plain-name 'Smoke test'
00:06 +0 -1: Some tests failed.Flutter doctor
$ flutter doctor -v
[✓] Flutter (Channel stable, 3.3.10, on macOS 13.2 22D7750270d darwin-arm, locale en)
• Flutter version 3.3.10 on channel stable at /Users/brettmorgan/flutter
• Upstream repository https://github.com/flutter/flutter
• Framework revision 135454af32 (5 days ago), 2022-12-15 07:36:55 -0800
• Engine revision 3316dd8728
• Dart version 2.18.6
• DevTools version 2.15.0
[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.0)
• Android SDK at /Users/brettmorgan/Library/Android/sdk
• Platform android-33, build-tools 33.0.0
• Java binary at: /Applications/Android Studio.app/Contents/jre/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 11.0.12+0-b1504.28-7817840)
• All Android licenses accepted.
[✓] Xcode - develop for iOS and macOS (Xcode 14.2)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Build 14C18
• CocoaPods version 1.11.3
[✓] Chrome - develop for the web
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome
[✓] Android Studio (version 2021.2)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 11.0.12+0-b1504.28-7817840)
[✓] IntelliJ IDEA Community Edition (version 2022.2.2)
• IntelliJ at /Applications/IntelliJ IDEA CE.app
• Flutter plugin version 70.0.5
• Dart plugin version 222.4167.21
[✓] VS Code (version 1.74.2)
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 3.54.0
[✓] Connected device (3 available)
• iPhone 14 Pro (mobile) • BBCB0062-6656-4250-BDE9-564287448DA4 • ios • com.apple.CoreSimulator.SimRuntime.iOS-16-2
(simulator)
• macOS (desktop) • macos • darwin-arm64 • macOS 13.2 22D7750270d darwin-arm
• Chrome (web) • chrome • web-javascript • Google Chrome 108.0.5359.124
[✓] HTTP Host Availability
• All required HTTP hosts are available
• No issues found!