widget tests failing after updating to 5.9.0

[mleevi]

Widget tests that contain ScreenUtilInit fail when using 5.9.0. Downgrading to 5.8.4 fixes the issue. Putting a tester.pumpAndSettle() after every tester.pumpWidget also solves the problem.

[Mounir-Bouaiche]

What kind of errors?

[mleevi]

What kind of errors?

Finder does not find anything on the first pump (zero widgets found). After adding pumpAndsSettle after the initial pump fixes the errors.

[Mounir-Bouaiche]

Put here a minimal code to reproduce the error.

[mleevi]

Passes with 5.8.4, fails with 5.9.0:

class Test extends StatefulWidget {
  const Test({super.key});

  @override
  State<Test> createState() => _TestState();
}

class _TestState extends State<Test> {
  @override
  Widget build(BuildContext context) {
    return ScreenUtilInit(
      designSize: const Size(430, 932),
      minTextAdapt: true,
      splitScreenMode: true,
      useInheritedMediaQuery: true,
      child: const Scaffold(body: Text('text')),
      builder: (_, child) => MaterialApp(
        localizationsDelegates: const [
          GlobalCupertinoLocalizations.delegate,
          DefaultCupertinoLocalizations.delegate,
          GlobalMaterialLocalizations.delegate,
          GlobalWidgetsLocalizations.delegate,
        ],
        home: child,
      ),
    );
  }
}

void main() {
  testWidgets('description', (tester) async {
    await tester.pumpWidget(const Test());

    expect(find.text('text'), findsOneWidget);
  });
}

[Mounir-Bouaiche]

Well, that's unexpected. We're using Future in last version for the new change: ensureScreenSize as parameter. Thanks for reporting.

[mleevi]

Is there any update on this? @Mounir-Bouaiche @techouse @lizhuoyuan @naivetoby

[github-actions]

This issue is stale because it has been open for 30 days with no activity.

[github-actions]

This issue was closed because it has been inactive for 14 days since being marked as stale.

[ZG-123]

Hello everyone, how did this work out in the end? I also encountered the same problem.

[gustamor]

The same issue:

[✓] Flutter (Channel stable, 3.16.9, on macOS 14.2.1 23C71 darwin-arm64, locale es-ES)
    • Flutter version 3.16.9 on channel stable at /Users/gus/SDK/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 41456452f2 (13 days ago), 2024-01-25 10:06:23 -0800
    • Engine revision f40e976bed
    • Dart version 3.2.6
    • DevTools version 2.28.5

[✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
    • Android SDK at /Users/gus/Library/Android/sdk
    • Platform android-34, build-tools 34.0.0
    • Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 17.0.7+0-17.0.7b1000.6-10550314)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 15.0.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 15A507
    • CocoaPods version 1.14.3

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2023.1)
    • 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 17.0.7+0-17.0.7b1000.6-10550314)

[✓] VS Code (version 1.86.0)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.82.0


[✓] Network resources
    • All expected network resources are available.

With the test:

void main() {
  testWidgets('should sign screen widgets exist', (WidgetTester tester) async {
    await tester.pumpWidget(
      const CupertinoApp(
        home: SignPortraitScreen(),
      ),
    );
    final scaffoldFinder = find.byKey(const Key('scaffold_sign_portrait'));
    expect(scaffoldFinder, findsOneWidget);
    final navTitleFinder = find.byKey(const Key('sign_nav_title'));
    expect(navTitleFinder, findsOneWidget);
  });
}

The test passes when SignPortraitScreen() does not use any screen utilities, with a value like height: 100, and fails when it has any value such as height: 100.h.

Error:

══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
The following LateError was thrown building SignPortraitScreen(dirty):
LateInitializationError: Field '_splitScreenMode@289084504' has not been initialized.

The relevant error-causing widget was:
  SignPortraitScreen
  SignPortraitScreen:file:///Users/gus/Codigo/FlutterProjects/project/test/widgets/sign_screen_portrait_test.dart:11:15

When the exception was thrown, this was the stack:
#0      ScreenUtil._splitScreenMode (package:flutter_screenutil/src/screen_util.dart)
#1      ScreenUtil.scaleHeight (package:flutter_screenutil/src/screen_util.dart:204:8)
#2      ScreenUtil.setHeight (package:flutter_screenutil/src/screen_util.dart:225:44)
#3      SizeExtension.h (package:flutter_screenutil/src/size_extension.dart:12:32)
#4      SignPortraitScreen.build (package:story_creator/ui/screens/login/sign_portrait_screen.dart:33:31)
#5      StatelessElement.build (package:flutter/src/widgets/framework.dart:5541:49)
#6      ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5471:15)

Always fails with:

void main() {
  testWidgets('should sign screen widgets exist', (WidgetTester tester) async {
    await tester.pumpWidget(
      const CupertinoApp(
        home: ScreenUtilInit(
          child: SignPortraitScreen(),
        ),
      ),
    );
    final scaffoldFinder = find.byKey(const Key('scaffold_sign_portrait'));
    expect(scaffoldFinder, findsOneWidget);
    final navTitleFinder = find.byKey(const Key('sign_nav_title'));
    expect(navTitleFinder, findsOneWidget);
  });
}

Then:

══╡ EXCEPTION CAUGHT BY FLUTTER TEST FRAMEWORK ╞════════════════════════════════════════════════════
The following TestFailure was thrown running a test:
Expected: exactly one matching candidate
  Actual: _KeyWidgetFinder:<Found 0 widgets with key [<'scaffold_sign_portrait'>]: []>
   Which: means none were found but one was expected

When the exception was thrown, this was the stack:
#4      main.<anonymous closure> (file:///Users/gus/Codigo/FlutterProjects/project/test/widgets/sign_screen_portrait_test.dart:16:5)
<asynchronous suspension>
#5      testWidgets.<anonymous closure>.<anonymous closure> (package:flutter_test/src/widget_tester.dart:168:15)
<asynchronous suspension>
#6      TestWidgetsFlutterBinding._runTestBody (package:flutter_test/src/binding.dart:1013:5)
<asynchronous suspension>
<asynchronous suspension>
(elided one frame from package:stack_trace)

This was caught by the test expectation on the following line:
  file:///Users/gus/Codigo/FlutterProjects/project/test/widgets/sign_screen_portrait_test.dart line 16
The test description was:
  should sign screen widgets exist
════════════════════════════════════════════════════════════════════════════════════════════════════

Works fine with tester.pumpAndSettle():

testWidgets('should sign screen widgets exist', (WidgetTester tester) async {
    await tester.pumpWidget(
      const CupertinoApp(
        home: ScreenUtilInit(
          child: SignPortraitScreen(),
        ),
      ),
    );
  
    await tester.pumpAndSettle();
  
    final scaffoldFinder = find.byKey(const Key('scaffold_sign_portrait'));
    expect(scaffoldFinder, findsOneWidget);
    final navTitleFinder = find.byKey(const Key('sign_nav_title'));
    expect(navTitleFinder, findsOneWidget);
  });

[MohiuddinM]

@gustamor @ZG-123 This issue has been fixed on master for quite some time, but unfortunately, maintainers did not have the time to make a release.

[MohiuddinM]

@Mounir-Bouaiche Is it possible to make a release or is this package now unmaintained?