| // Copyright 2014 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/foundation.dart'; |
| import 'package:flutter/material.dart'; |
| import 'package:flutter_test/flutter_test.dart'; |
| |
| void main() { |
| testWidgets('debugCheckHasMaterial control test', (WidgetTester tester) async { |
| await tester.pumpWidget(const ListTile()); |
| final dynamic exception = tester.takeException(); |
| expect(exception, isFlutterError); |
| final FlutterError error = exception as FlutterError; |
| expect(error.diagnostics.length, 5); |
| expect(error.diagnostics[2].level, DiagnosticLevel.hint); |
| expect( |
| error.diagnostics[2].toStringDeep(), |
| equalsIgnoringHashCodes( |
| 'To introduce a Material widget, you can either directly include\n' |
| 'one, or use a widget that contains Material itself, such as a\n' |
| 'Card, Dialog, Drawer, or Scaffold.\n', |
| ), |
| ); |
| expect(error.diagnostics[3], isA<DiagnosticsProperty<Element>>()); |
| expect(error.diagnostics[4], isA<DiagnosticsBlock>()); |
| expect(error.toStringDeep(), |
| 'FlutterError\n' |
| ' No Material widget found.\n' |
| ' ListTile widgets require a Material widget ancestor.\n' |
| ' In material design, most widgets are conceptually "printed" on a\n' |
| " sheet of material. In Flutter's material library, that material\n" |
| ' is represented by the Material widget. It is the Material widget\n' |
| ' that renders ink splashes, for instance. Because of this, many\n' |
| ' material library widgets require that there be a Material widget\n' |
| ' in the tree above them.\n' |
| ' To introduce a Material widget, you can either directly include\n' |
| ' one, or use a widget that contains Material itself, such as a\n' |
| ' Card, Dialog, Drawer, or Scaffold.\n' |
| ' The specific widget that could not find a Material ancestor was:\n' |
| ' ListTile\n' |
| ' The ancestors of this widget were:\n' |
| ' [root]\n' |
| ); |
| }); |
| |
| testWidgets('debugCheckHasMaterialLocalizations control test', ( |
| WidgetTester tester) async { |
| await tester.pumpWidget(const BackButton()); |
| final dynamic exception = tester.takeException(); |
| expect(exception, isFlutterError); |
| final FlutterError error = exception as FlutterError; |
| expect(error.diagnostics.length, 6); |
| expect(error.diagnostics[3].level, DiagnosticLevel.hint); |
| expect( |
| error.diagnostics[3].toStringDeep(), |
| equalsIgnoringHashCodes( |
| 'To introduce a MaterialLocalizations, either use a MaterialApp at\n' |
| 'the root of your application to include them automatically, or\n' |
| 'add a Localization widget with a MaterialLocalizations delegate.\n', |
| ), |
| ); |
| expect(error.diagnostics[4], isA<DiagnosticsProperty<Element>>()); |
| expect(error.diagnostics[5], isA<DiagnosticsBlock>()); |
| expect(error.toStringDeep(), |
| 'FlutterError\n' |
| ' No MaterialLocalizations found.\n' |
| ' BackButton widgets require MaterialLocalizations to be provided\n' |
| ' by a Localizations widget ancestor.\n' |
| ' The material library uses Localizations to generate messages,\n' |
| ' labels, and abbreviations.\n' |
| ' To introduce a MaterialLocalizations, either use a MaterialApp at\n' |
| ' the root of your application to include them automatically, or\n' |
| ' add a Localization widget with a MaterialLocalizations delegate.\n' |
| ' The specific widget that could not find a MaterialLocalizations\n' |
| ' ancestor was:\n' |
| ' BackButton\n' |
| ' The ancestors of this widget were:\n' |
| ' [root]\n' |
| ); |
| }); |
| |
| testWidgets( |
| 'debugCheckHasScaffold control test', (WidgetTester tester) async { |
| await tester.pumpWidget( |
| MaterialApp( |
| theme: ThemeData( |
| pageTransitionsTheme: const PageTransitionsTheme( |
| builders: <TargetPlatform, PageTransitionsBuilder>{ |
| TargetPlatform.android: FadeUpwardsPageTransitionsBuilder(), |
| }, |
| ), |
| ), |
| home: Builder( |
| builder: (BuildContext context) { |
| showBottomSheet<void>(context: context, |
| builder: (BuildContext context) => Container()); |
| return Container(); |
| } |
| ), |
| ), |
| ); |
| final dynamic exception = tester.takeException(); |
| expect(exception, isFlutterError); |
| final FlutterError error = exception as FlutterError; |
| expect(error.diagnostics.length, 5); |
| expect(error.diagnostics[2], isA<DiagnosticsProperty<Element>>()); |
| expect(error.diagnostics[3], isA<DiagnosticsBlock>()); |
| expect(error.diagnostics[4].level, DiagnosticLevel.hint); |
| expect( |
| error.diagnostics[4].toStringDeep(), |
| equalsIgnoringHashCodes( |
| 'Typically, the Scaffold widget is introduced by the MaterialApp\n' |
| 'or WidgetsApp widget at the top of your application widget tree.\n', |
| ), |
| ); |
| expect(error.toStringDeep(), equalsIgnoringHashCodes( |
| 'FlutterError\n' |
| ' No Scaffold widget found.\n' |
| ' Builder widgets require a Scaffold widget ancestor.\n' |
| ' The specific widget that could not find a Scaffold ancestor was:\n' |
| ' Builder\n' |
| ' The ancestors of this widget were:\n' |
| ' Semantics\n' |
| ' Builder\n' |
| ' RepaintBoundary-[GlobalKey#00000]\n' |
| ' IgnorePointer\n' |
| ' AnimatedBuilder\n' |
| ' FadeTransition\n' |
| ' FractionalTranslation\n' |
| ' SlideTransition\n' |
| ' _FadeUpwardsPageTransition\n' |
| ' AnimatedBuilder\n' |
| ' RepaintBoundary\n' |
| ' _FocusMarker\n' |
| ' Semantics\n' |
| ' FocusScope\n' |
| ' _ActionsMarker\n' |
| ' Actions\n' |
| ' PageStorage\n' |
| ' Offstage\n' |
| ' _ModalScopeStatus\n' |
| ' UnmanagedRestorationScope\n' |
| ' RestorationScope\n' |
| ' AnimatedBuilder\n' |
| ' _ModalScope<dynamic>-[LabeledGlobalKey<_ModalScopeState<dynamic>>#00000]\n' |
| ' Semantics\n' |
| ' _EffectiveTickerMode\n' |
| ' TickerMode\n' |
| ' _OverlayEntryWidget-[LabeledGlobalKey<_OverlayEntryWidgetState>#00000]\n' |
| ' _Theatre\n' |
| ' Overlay-[LabeledGlobalKey<OverlayState>#00000]\n' |
| ' UnmanagedRestorationScope\n' |
| ' _FocusMarker\n' |
| ' Semantics\n' |
| ' FocusScope\n' |
| ' AbsorbPointer\n' |
| ' Listener\n' |
| ' HeroControllerScope\n' |
| ' Navigator-[GlobalObjectKey<NavigatorState> _WidgetsAppState#00000]\n' |
| ' IconTheme\n' |
| ' IconTheme\n' |
| ' _InheritedCupertinoTheme\n' |
| ' CupertinoTheme\n' |
| ' _InheritedTheme\n' |
| ' Theme\n' |
| ' AnimatedTheme\n' |
| ' _ScaffoldMessengerScope\n' |
| ' ScaffoldMessenger\n' |
| ' Builder\n' |
| ' DefaultTextStyle\n' |
| ' CustomPaint\n' |
| ' Banner\n' |
| ' CheckedModeBanner\n' |
| ' Title\n' |
| ' Directionality\n' |
| ' _LocalizationsScope-[GlobalKey#00000]\n' |
| ' Semantics\n' |
| ' Localizations\n' |
| ' MediaQuery\n' |
| ' _MediaQueryFromWindow\n' |
| ' _FocusMarker\n' |
| ' Focus\n' |
| ' _FocusTraversalGroupMarker\n' |
| ' FocusTraversalGroup\n' |
| ' _ActionsMarker\n' |
| ' Actions\n' |
| ' _ShortcutsMarker\n' |
| ' Semantics\n' |
| ' _FocusMarker\n' |
| ' Focus\n' |
| ' Shortcuts\n' |
| ' UnmanagedRestorationScope\n' |
| ' RestorationScope\n' |
| ' UnmanagedRestorationScope\n' |
| ' RootRestorationScope\n' |
| ' WidgetsApp-[GlobalObjectKey _MaterialAppState#00000]\n' |
| ' HeroControllerScope\n' |
| ' ScrollConfiguration\n' |
| ' MaterialApp\n' |
| ' [root]\n' |
| ' Typically, the Scaffold widget is introduced by the MaterialApp\n' |
| ' or WidgetsApp widget at the top of your application widget tree.\n', |
| )); |
| }); |
| |
| testWidgets('debugCheckHasScaffoldMessenger control test', (WidgetTester tester) async { |
| final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>(); |
| final GlobalKey<ScaffoldMessengerState> _scaffoldMessengerKey = GlobalKey<ScaffoldMessengerState>(); |
| final SnackBar snackBar = SnackBar( |
| content: const Text('Snack'), |
| action: SnackBarAction(label: 'Test', onPressed: () {}) |
| ); |
| await tester.pumpWidget(Directionality( |
| textDirection: TextDirection.ltr, |
| child: MediaQuery( |
| data: const MediaQueryData(), |
| child: ScaffoldMessenger( |
| key: _scaffoldMessengerKey, |
| child: Builder( |
| builder: (BuildContext context) { |
| return Scaffold( |
| key: _scaffoldKey, |
| body: Container(), |
| ); |
| } |
| ) |
| ), |
| ) |
| )); |
| final List<dynamic> exceptions = <dynamic>[]; |
| final FlutterExceptionHandler? oldHandler = FlutterError.onError; |
| FlutterError.onError = (FlutterErrorDetails details) { |
| exceptions.add(details.exception); |
| }; |
| // ScaffoldMessenger shows SnackBar. |
| _scaffoldMessengerKey.currentState!.showSnackBar(snackBar); |
| await tester.pumpAndSettle(); |
| |
| // Pump widget to rebuild without ScaffoldMessenger |
| await tester.pumpWidget(Directionality( |
| textDirection: TextDirection.ltr, |
| child: MediaQuery( |
| data: const MediaQueryData(), |
| child: Scaffold( |
| key: _scaffoldKey, |
| body: Container(), |
| ), |
| ), |
| )); |
| // The Scaffold should assert we still have an ancestor ScaffoldMessenger in |
| // order to dismiss the SnackBar from the ScaffoldMessenger. |
| await tester.tap(find.text('Test')); |
| FlutterError.onError = oldHandler; |
| |
| expect(exceptions.length, 1); |
| expect(exceptions.single.runtimeType, FlutterError); |
| final FlutterError error = exceptions.first as FlutterError; |
| expect(error.diagnostics.length, 5); |
| expect(error.diagnostics[2], isA<DiagnosticsProperty<Element>>()); |
| expect(error.diagnostics[3], isA<DiagnosticsBlock>()); |
| expect(error.diagnostics[4].level, DiagnosticLevel.hint); |
| expect( |
| error.diagnostics[4].toStringDeep(), |
| equalsIgnoringHashCodes( |
| 'Typically, the ScaffoldMessenger widget is introduced by the\n' |
| 'MaterialApp at the top of your application widget tree.\n', |
| ), |
| ); |
| expect(error.toStringDeep(), equalsIgnoringHashCodes( |
| 'FlutterError\n' |
| ' No ScaffoldMessenger widget found.\n' |
| ' Scaffold widgets require a ScaffoldMessenger widget ancestor.\n' |
| ' The specific widget that could not find a ScaffoldMessenger\n' |
| ' ancestor was:\n' |
| ' Scaffold-[LabeledGlobalKey<ScaffoldState>#00829]\n' |
| ' The ancestors of this widget were:\n' |
| ' MediaQuery\n' |
| ' Directionality\n' |
| ' [root]\n' |
| ' Typically, the ScaffoldMessenger widget is introduced by the\n' |
| ' MaterialApp at the top of your application widget tree.\n' |
| )); |
| }); |
| } |
