// 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 'dart:async'; import 'dart:ui'; import 'package:flutter/cupertino.dart'; import 'package:flutter/foundation.dart'; import 'package:flutter/material.dart'; import 'package:flutter_test/flutter_test.dart'; void main() { tearDown(() { LicenseRegistry.reset(); }); testWidgets('Material3 has sentence case labels', (WidgetTester tester) async { await tester.pumpWidget(MaterialApp( theme: ThemeData(useMaterial3: true), builder: (BuildContext context, Widget? child) { return MediaQuery( // Display has a vertical hinge down the middle data: const MediaQueryData( size: Size(800, 600), displayFeatures: <DisplayFeature>[ DisplayFeature( bounds: Rect.fromLTRB(390, 0, 410, 600), type: DisplayFeatureType.hinge, state: DisplayFeatureState.unknown, ), ], ), child: child!, ); }, home: Builder( builder: (BuildContext context) => ElevatedButton( onPressed: () { showAboutDialog( context: context, useRootNavigator: false, applicationName: 'A', ); }, child: const Text('Show About Dialog'), ), ), )); // Open the dialog. await tester.tap(find.byType(ElevatedButton)); await tester.pumpAndSettle(); expect(find.text('Close'), findsOneWidget); expect(find.text('View licenses'), findsOneWidget); }); testWidgets('AboutListTile control test', (WidgetTester tester) async { const FlutterLogo logo = FlutterLogo(); await tester.pumpWidget( MaterialApp( title: 'Pirate app', home: Scaffold( appBar: AppBar( title: const Text('Home'), ), drawer: Drawer( child: ListView( children: const <Widget>[ AboutListTile( applicationVersion: '0.1.2', applicationIcon: logo, applicationLegalese: 'I am the very model of a modern major general.', aboutBoxChildren: <Widget>[ Text('About box'), ], ), ], ), ), ), ), ); expect(find.text('About Pirate app'), findsNothing); expect(find.text('0.1.2'), findsNothing); expect(find.byWidget(logo), findsNothing); expect( find.text('I am the very model of a modern major general.'), findsNothing, ); expect(find.text('About box'), findsNothing); await tester.tap(find.byType(IconButton)); await tester.pumpAndSettle(); expect(find.text('About Pirate app'), findsOneWidget); expect(find.text('0.1.2'), findsNothing); expect(find.byWidget(logo), findsNothing); expect( find.text('I am the very model of a modern major general.'), findsNothing, ); expect(find.text('About box'), findsNothing); await tester.tap(find.text('About Pirate app')); await tester.pumpAndSettle(); expect(find.text('About Pirate app'), findsOneWidget); expect(find.text('0.1.2'), findsOneWidget); expect(find.byWidget(logo), findsOneWidget); expect( find.text('I am the very model of a modern major general.'), findsOneWidget, ); expect(find.text('About box'), findsOneWidget); LicenseRegistry.addLicense(() { return Stream<LicenseEntry>.fromIterable(<LicenseEntry>[ const LicenseEntryWithLineBreaks(<String>['Pirate package '], 'Pirate license'), ]); }); await tester.tap(find.text('VIEW LICENSES')); await tester.pumpAndSettle(); expect(find.text('Pirate app'), findsOneWidget); expect(find.text('0.1.2'), findsOneWidget); expect(find.byWidget(logo), findsOneWidget); expect( find.text('I am the very model of a modern major general.'), findsOneWidget, ); await tester.tap(find.text('Pirate package ')); await tester.pumpAndSettle(); expect(find.text('Pirate license'), findsOneWidget); }); testWidgets('About box logic defaults to executable name for app name', (WidgetTester tester) async { await tester.pumpWidget( const MaterialApp( title: 'flutter_tester', home: Material(child: AboutListTile()), ), ); expect(find.text('About flutter_tester'), findsOneWidget); }); testWidgets('LicensePage control test', (WidgetTester tester) async { LicenseRegistry.addLicense(() { return Stream<LicenseEntry>.fromIterable(<LicenseEntry>[ const LicenseEntryWithLineBreaks(<String>['AAA'], 'BBB'), ]); }); LicenseRegistry.addLicense(() { return Stream<LicenseEntry>.fromIterable(<LicenseEntry>[ const LicenseEntryWithLineBreaks( <String>['Another package'], 'Another license', ), ]); }); await tester.pumpWidget( const MaterialApp( home: Center( child: LicensePage(), ), ), ); expect(find.text('AAA'), findsNothing); expect(find.text('BBB'), findsNothing); expect(find.text('Another package'), findsNothing); expect(find.text('Another license'), findsNothing); await tester.pumpAndSettle(); // Check for packages. expect(find.text('AAA'), findsOneWidget); expect(find.text('Another package'), findsOneWidget); // Check license is displayed after entering into license page for 'AAA'. await tester.tap(find.text('AAA')); await tester.pumpAndSettle(); expect(find.text('BBB'), findsOneWidget); /// Go back to list of packages. await tester.pageBack(); await tester.pumpAndSettle(); /// Check license is displayed after entering into license page for /// 'Another package'. await tester.tap(find.text('Another package')); await tester.pumpAndSettle(); expect(find.text('Another license'), findsOneWidget); }); testWidgets('LicensePage control test with all properties', (WidgetTester tester) async { const FlutterLogo logo = FlutterLogo(); LicenseRegistry.addLicense(() { return Stream<LicenseEntry>.fromIterable(<LicenseEntry>[ const LicenseEntryWithLineBreaks(<String>['AAA'], 'BBB'), ]); }); LicenseRegistry.addLicense(() { return Stream<LicenseEntry>.fromIterable(<LicenseEntry>[ const LicenseEntryWithLineBreaks( <String>['Another package'], 'Another license', ), ]); }); await tester.pumpWidget( const MaterialApp( title: 'Pirate app', home: Center( child: LicensePage( applicationName: 'LicensePage test app', applicationVersion: '0.1.2', applicationIcon: logo, applicationLegalese: 'I am the very model of a modern major general.', ), ), ), ); expect(find.text('Pirate app'), findsNothing); expect(find.text('LicensePage test app'), findsOneWidget); expect(find.text('0.1.2'), findsOneWidget); expect(find.byWidget(logo), findsOneWidget); expect( find.text('I am the very model of a modern major general.'), findsOneWidget, ); expect(find.text('AAA'), findsNothing); expect(find.text('BBB'), findsNothing); expect(find.text('Another package'), findsNothing); expect(find.text('Another license'), findsNothing); await tester.pumpAndSettle(); expect(find.text('Pirate app'), findsNothing); expect(find.text('LicensePage test app'), findsOneWidget); expect(find.text('0.1.2'), findsOneWidget); expect(find.byWidget(logo), findsOneWidget); expect( find.text('I am the very model of a modern major general.'), findsOneWidget, ); // Check for packages. expect(find.text('AAA'), findsOneWidget); expect(find.text('Another package'), findsOneWidget); // Check license is displayed after entering into license page for 'AAA'. await tester.tap(find.text('AAA')); await tester.pumpAndSettle(); expect(find.text('BBB'), findsOneWidget); /// Go back to list of packages. await tester.pageBack(); await tester.pumpAndSettle(); /// Check license is displayed after entering into license page for /// 'Another package'. await tester.tap(find.text('Another package')); await tester.pumpAndSettle(); expect(find.text('Another license'), findsOneWidget); }); testWidgets('_PackageLicensePage title style without AppBarTheme', (WidgetTester tester) async { LicenseRegistry.addLicense(() { return Stream<LicenseEntry>.fromIterable(<LicenseEntry>[ const LicenseEntryWithLineBreaks(<String>['AAA'], 'BBB'), ]); }); const TextStyle titleTextStyle = TextStyle( fontSize: 20, color: Colors.black, inherit: false, ); const TextStyle subtitleTextStyle = TextStyle( fontSize: 15, color: Colors.red, inherit: false, ); await tester.pumpWidget( MaterialApp( theme: ThemeData( primaryTextTheme: const TextTheme( titleLarge: titleTextStyle, titleSmall: subtitleTextStyle, ), ), home: const Center( child: LicensePage(), ), ), ); await tester.pumpAndSettle(); // Check for packages. expect(find.text('AAA'), findsOneWidget); // Check license is displayed after entering into license page for 'AAA'. await tester.tap(find.text('AAA')); await tester.pumpAndSettle(); // Check for titles style. final Text title = tester.widget(find.text('AAA')); expect(title.style, titleTextStyle); final Text subtitle = tester.widget(find.text('1 license.')); expect(subtitle.style, subtitleTextStyle); }); testWidgets('_PackageLicensePage title style with AppBarTheme', (WidgetTester tester) async { LicenseRegistry.addLicense(() { return Stream<LicenseEntry>.fromIterable(<LicenseEntry>[ const LicenseEntryWithLineBreaks(<String>['AAA'], 'BBB'), ]); }); const TextStyle titleTextStyle = TextStyle( fontSize: 20, color: Colors.indigo, ); const TextStyle subtitleTextStyle = TextStyle( fontSize: 15, color: Colors.indigo, ); await tester.pumpWidget( MaterialApp( theme: ThemeData( // Not used because appBarTheme is prioritized. primaryTextTheme: const TextTheme( titleLarge: TextStyle( fontSize: 12, color: Colors.grey, ), titleSmall: TextStyle( fontSize: 10, color: Colors.grey, ), ), appBarTheme: const AppBarTheme( textTheme: TextTheme( titleLarge: titleTextStyle, titleSmall: subtitleTextStyle, ), foregroundColor: Colors.indigo, ), ), home: const Center( child: LicensePage(), ), ), ); await tester.pumpAndSettle(); // Check for packages. expect(find.text('AAA'), findsOneWidget); // Check license is displayed after entering into license page for 'AAA'. await tester.tap(find.text('AAA')); await tester.pumpAndSettle(); // Check for titles style. final Text title = tester.widget(find.text('AAA')); expect(title.style, titleTextStyle); final Text subtitle = tester.widget(find.text('1 license.')); expect(subtitle.style, subtitleTextStyle); }); testWidgets('LicensePage respects the notch', (WidgetTester tester) async { const double safeareaPadding = 27.0; LicenseRegistry.addLicense(() { return Stream<LicenseEntry>.fromIterable(<LicenseEntry>[ const LicenseEntryWithLineBreaks(<String>['ABC'], 'DEF'), ]); }); await tester.pumpWidget( const MaterialApp( home: MediaQuery( data: MediaQueryData( padding: EdgeInsets.all(safeareaPadding), ), child: LicensePage(), ), ), ); await tester.pumpAndSettle(); // The position of the top left of app bar title should indicate whether // the safe area is sufficiently respected. expect( tester.getTopLeft(find.text('Licenses')), const Offset(16.0 + safeareaPadding, 18.0 + safeareaPadding), ); }); testWidgets('LicensePage returns early if unmounted', (WidgetTester tester) async { final Completer<LicenseEntry> licenseCompleter = Completer<LicenseEntry>(); LicenseRegistry.addLicense(() { return Stream<LicenseEntry>.fromFuture(licenseCompleter.future); }); await tester.pumpWidget( const MaterialApp( home: LicensePage(), ), ); await tester.pump(); await tester.pumpWidget( const MaterialApp( home: Placeholder(), ), ); await tester.pumpAndSettle(); final FakeLicenseEntry licenseEntry = FakeLicenseEntry(); licenseCompleter.complete(licenseEntry); expect(licenseEntry.packagesCalled, false); }); testWidgets('LicensePage returns late if unmounted', (WidgetTester tester) async { final Completer<LicenseEntry> licenseCompleter = Completer<LicenseEntry>(); LicenseRegistry.addLicense(() { return Stream<LicenseEntry>.fromFuture(licenseCompleter.future); }); await tester.pumpWidget( const MaterialApp( home: LicensePage(), ), ); await tester.pump(); final FakeLicenseEntry licenseEntry = FakeLicenseEntry(); licenseCompleter.complete(licenseEntry); await tester.pumpWidget( const MaterialApp( home: Placeholder(), ), ); await tester.pumpAndSettle(); expect(licenseEntry.packagesCalled, true); }); testWidgets('LicensePage logic defaults to executable name for app name', (WidgetTester tester) async { await tester.pumpWidget( const MaterialApp( title: 'flutter_tester', home: Material(child: LicensePage()), ), ); expect(find.text('flutter_tester'), findsOneWidget); }); testWidgets('AboutListTile dense property is applied', (WidgetTester tester) async { await tester.pumpWidget(const MaterialApp( home: Material(child: Center(child: AboutListTile())), )); Rect tileRect = tester.getRect(find.byType(AboutListTile)); expect(tileRect.height, 56.0); await tester.pumpWidget(const MaterialApp( home: Material(child: Center(child: AboutListTile(dense: false))), )); tileRect = tester.getRect(find.byType(AboutListTile)); expect(tileRect.height, 56.0); await tester.pumpWidget(const MaterialApp( home: Material(child: Center(child: AboutListTile(dense: true))), )); tileRect = tester.getRect(find.byType(AboutListTile)); expect(tileRect.height, 48.0); }); testWidgets('showLicensePage uses nested navigator by default', (WidgetTester tester) async { final LicensePageObserver rootObserver = LicensePageObserver(); final LicensePageObserver nestedObserver = LicensePageObserver(); await tester.pumpWidget(MaterialApp( navigatorObservers: <NavigatorObserver>[rootObserver], initialRoute: '/', onGenerateRoute: (_) { return PageRouteBuilder<dynamic>( pageBuilder: (_, __, ___) => Navigator( observers: <NavigatorObserver>[nestedObserver], onGenerateRoute: (RouteSettings settings) { return PageRouteBuilder<dynamic>( pageBuilder: (BuildContext context, _, __) { return ElevatedButton( onPressed: () { showLicensePage( context: context, applicationName: 'A', ); }, child: const Text('Show License Page'), ); }, ); }, ), ); }, )); // Open the dialog. await tester.tap(find.byType(ElevatedButton)); expect(rootObserver.licensePageCount, 0); expect(nestedObserver.licensePageCount, 1); }); testWidgets('showLicensePage uses root navigator if useRootNavigator is true', (WidgetTester tester) async { final LicensePageObserver rootObserver = LicensePageObserver(); final LicensePageObserver nestedObserver = LicensePageObserver(); await tester.pumpWidget(MaterialApp( navigatorObservers: <NavigatorObserver>[rootObserver], initialRoute: '/', onGenerateRoute: (_) { return PageRouteBuilder<dynamic>( pageBuilder: (_, __, ___) => Navigator( observers: <NavigatorObserver>[nestedObserver], onGenerateRoute: (RouteSettings settings) { return PageRouteBuilder<dynamic>( pageBuilder: (BuildContext context, _, __) { return ElevatedButton( onPressed: () { showLicensePage( context: context, useRootNavigator: true, applicationName: 'A', ); }, child: const Text('Show License Page'), ); }, ); }, ), ); }, )); // Open the dialog. await tester.tap(find.byType(ElevatedButton)); expect(rootObserver.licensePageCount, 1); expect(nestedObserver.licensePageCount, 0); }); testWidgets('showAboutDialog uses root navigator by default', (WidgetTester tester) async { final AboutDialogObserver rootObserver = AboutDialogObserver(); final AboutDialogObserver nestedObserver = AboutDialogObserver(); await tester.pumpWidget(MaterialApp( navigatorObservers: <NavigatorObserver>[rootObserver], home: Navigator( observers: <NavigatorObserver>[nestedObserver], onGenerateRoute: (RouteSettings settings) { return MaterialPageRoute<dynamic>( builder: (BuildContext context) { return ElevatedButton( onPressed: () { showAboutDialog( context: context, applicationName: 'A', ); }, child: const Text('Show About Dialog'), ); }, ); }, ), )); // Open the dialog. await tester.tap(find.byType(ElevatedButton)); expect(rootObserver.dialogCount, 1); expect(nestedObserver.dialogCount, 0); }); testWidgets('showAboutDialog uses nested navigator if useRootNavigator is false', (WidgetTester tester) async { final AboutDialogObserver rootObserver = AboutDialogObserver(); final AboutDialogObserver nestedObserver = AboutDialogObserver(); await tester.pumpWidget(MaterialApp( navigatorObservers: <NavigatorObserver>[rootObserver], home: Navigator( observers: <NavigatorObserver>[nestedObserver], onGenerateRoute: (RouteSettings settings) { return MaterialPageRoute<dynamic>( builder: (BuildContext context) { return ElevatedButton( onPressed: () { showAboutDialog( context: context, useRootNavigator: false, applicationName: 'A', ); }, child: const Text('Show About Dialog'), ); }, ); }, ), )); // Open the dialog. await tester.tap(find.byType(ElevatedButton)); expect(rootObserver.dialogCount, 0); expect(nestedObserver.dialogCount, 1); }); group('showAboutDialog avoids overlapping display features', () { testWidgets('default positioning', (WidgetTester tester) async { await tester.pumpWidget(MaterialApp( builder: (BuildContext context, Widget? child) { return MediaQuery( // Display has a vertical hinge down the middle data: const MediaQueryData( size: Size(800, 600), displayFeatures: <DisplayFeature>[ DisplayFeature( bounds: Rect.fromLTRB(390, 0, 410, 600), type: DisplayFeatureType.hinge, state: DisplayFeatureState.unknown, ), ], ), child: child!, ); }, home: Builder( builder: (BuildContext context) => ElevatedButton( onPressed: () { showAboutDialog( context: context, useRootNavigator: false, applicationName: 'A', ); }, child: const Text('Show About Dialog'), ), ), )); // Open the dialog. await tester.tap(find.byType(ElevatedButton)); await tester.pumpAndSettle(); // By default it should place the dialog on the left screen expect(tester.getTopLeft(find.byType(AboutDialog)), Offset.zero); expect(tester.getBottomRight(find.byType(AboutDialog)), const Offset(390.0, 600.0)); }); testWidgets('positioning using anchorPoint', (WidgetTester tester) async { await tester.pumpWidget(MaterialApp( builder: (BuildContext context, Widget? child) { return MediaQuery( // Display has a vertical hinge down the middle data: const MediaQueryData( size: Size(800, 600), displayFeatures: <DisplayFeature>[ DisplayFeature( bounds: Rect.fromLTRB(390, 0, 410, 600), type: DisplayFeatureType.hinge, state: DisplayFeatureState.unknown, ), ], ), child: child!, ); }, home: Builder( builder: (BuildContext context) => ElevatedButton( onPressed: () { showAboutDialog( context: context, useRootNavigator: false, applicationName: 'A', anchorPoint: const Offset(1000, 0), ); }, child: const Text('Show About Dialog'), ), ), )); // Open the dialog. await tester.tap(find.byType(ElevatedButton)); await tester.pumpAndSettle(); // The anchorPoint hits the right side of the display expect(tester.getTopLeft(find.byType(AboutDialog)), const Offset(410.0, 0.0)); expect(tester.getBottomRight(find.byType(AboutDialog)), const Offset(800.0, 600.0)); }); testWidgets('positioning using Directionality', (WidgetTester tester) async { await tester.pumpWidget(MaterialApp( builder: (BuildContext context, Widget? child) { return MediaQuery( // Display has a vertical hinge down the middle data: const MediaQueryData( size: Size(800, 600), displayFeatures: <DisplayFeature>[ DisplayFeature( bounds: Rect.fromLTRB(390, 0, 410, 600), type: DisplayFeatureType.hinge, state: DisplayFeatureState.unknown, ), ], ), child: Directionality( textDirection: TextDirection.rtl, child: child!, ), ); }, home: Builder( builder: (BuildContext context) => ElevatedButton( onPressed: () { showAboutDialog( context: context, useRootNavigator: false, applicationName: 'A', ); }, child: const Text('Show About Dialog'), ), ), )); // Open the dialog. await tester.tap(find.byType(ElevatedButton)); await tester.pumpAndSettle(); // Since this is rtl, the first screen is the on the right expect(tester.getTopLeft(find.byType(AboutDialog)), const Offset(410.0, 0.0)); expect(tester.getBottomRight(find.byType(AboutDialog)), const Offset(800.0, 600.0)); }); }); testWidgets("AboutListTile's child should not be offset when the icon is not specified.", (WidgetTester tester) async { await tester.pumpWidget( const MaterialApp( home: Scaffold( body: AboutListTile( child: Text('About'), ), ), ), ); expect( find.descendant( of: find.byType(AboutListTile), matching: find.byType(Icon), ), findsNothing, ); }); testWidgets("AboutDialog's contents are scrollable", (WidgetTester tester) async { final Key contentKey = UniqueKey(); await tester.pumpWidget(MaterialApp( home: Navigator( onGenerateRoute: (RouteSettings settings) { return MaterialPageRoute<dynamic>( builder: (BuildContext context) { return ElevatedButton( onPressed: () { showAboutDialog( context: context, useRootNavigator: false, applicationName: 'A', children: <Widget>[ Container( key: contentKey, color: Colors.orange, height: 500, ), ], ); }, child: const Text('Show About Dialog'), ); }, ); }, ), )); await tester.tap(find.text('Show About Dialog')); await tester.pumpAndSettle(); // Try dragging by the [AboutDialog]'s title. RenderBox box = tester.renderObject(find.text('A')); Offset originalOffset = box.localToGlobal(Offset.zero); await tester.drag(find.byKey(contentKey), const Offset(0.0, -20.0)); expect(box.localToGlobal(Offset.zero), equals(originalOffset.translate(0.0, -20.0))); // Try dragging by the additional children in contents. box = tester.renderObject(find.byKey(contentKey)); originalOffset = box.localToGlobal(Offset.zero); await tester.drag(find.byKey(contentKey), const Offset(0.0, -20.0)); expect(box.localToGlobal(Offset.zero), equals(originalOffset.translate(0.0, -20.0))); }); testWidgets("LicensePage's color must be same whether loading or done", (WidgetTester tester) async { const Color scaffoldColor = Color(0xFF123456); const Color cardColor = Color(0xFF654321); await tester.pumpWidget(MaterialApp( theme: ThemeData.light().copyWith( scaffoldBackgroundColor: scaffoldColor, cardColor: cardColor, ), home: Scaffold( body: Center( child: Builder( builder: (BuildContext context) => GestureDetector( child: const Text('Show licenses'), onTap: () { showLicensePage( context: context, applicationName: 'MyApp', applicationVersion: '1.0.0', ); }, ), ), ), ), )); await tester.tap(find.text('Show licenses')); await tester.pump(); await tester.pump(); // Check color when loading. final List<Material> materialLoadings = tester.widgetList<Material>(find.byType(Material)).toList(); expect(materialLoadings.length, equals(4)); expect(materialLoadings[1].color, scaffoldColor); expect(materialLoadings[2].color, cardColor); await tester.pumpAndSettle(); // Check color when done. expect(find.byKey(const ValueKey<ConnectionState>(ConnectionState.done)), findsOneWidget); final List<Material> materialDones = tester.widgetList<Material>(find.byType(Material)).toList(); expect(materialDones.length, equals(3)); expect(materialDones[0].color, scaffoldColor); expect(materialDones[1].color, cardColor); }); testWidgets('Conflicting scrollbars are not applied by ScrollBehavior to _PackageLicensePage', (WidgetTester tester) async { // Regression test for https://github.com/flutter/flutter/issues/83819 LicenseRegistry.addLicense(() { return Stream<LicenseEntry>.fromIterable(<LicenseEntry>[ const LicenseEntryWithLineBreaks(<String>['AAA'], 'BBB'), ]); }); await tester.pumpWidget( const MaterialApp( home: Center( child: LicensePage(), ), ), ); await tester.pumpAndSettle(); // Check for packages. expect(find.text('AAA'), findsOneWidget); // Check license is displayed after entering into license page for 'AAA'. await tester.tap(find.text('AAA')); await tester.pumpAndSettle(); // The inherited ScrollBehavior should not apply Scrollbars since they are // already built in to the widget. switch (debugDefaultTargetPlatformOverride) { case TargetPlatform.android: case TargetPlatform.fuchsia: case TargetPlatform.linux: case TargetPlatform.macOS: case TargetPlatform.windows: expect(find.byType(CupertinoScrollbar), findsNothing); break; case TargetPlatform.iOS: expect(find.byType(CupertinoScrollbar), findsOneWidget); break; case null: break; } expect(find.byType(Scrollbar), findsOneWidget); expect(find.byType(RawScrollbar), findsNothing); }, variant: TargetPlatformVariant.all()); testWidgets('LicensePage padding', (WidgetTester tester) async { const FlutterLogo logo = FlutterLogo(); await tester.pumpWidget( const MaterialApp( title: 'Pirate app', home: Center( child: LicensePage( applicationName: 'LicensePage test app', applicationIcon: logo, applicationVersion: '0.1.2', applicationLegalese: 'I am the very model of a modern major general.', ), ), ), ); final Finder appName = find.text('LicensePage test app'); final Finder appIcon = find.byType(FlutterLogo); final Finder appVersion = find.text('0.1.2'); final Finder appLegalese = find.text('I am the very model of a modern major general.'); final Finder appPowered = find.text('Powered by Flutter'); expect(appName, findsOneWidget); expect(appIcon, findsOneWidget); expect(appVersion, findsOneWidget); expect(appLegalese, findsOneWidget); expect(appPowered, findsOneWidget); // Bottom padding is applied to the app version and app legalese text. final double appNameBottomPadding = tester.getTopLeft(appIcon).dy - tester.getBottomLeft(appName).dy; expect(appNameBottomPadding, 0.0); final double appIconBottomPadding = tester.getTopLeft(appVersion).dy - tester.getBottomLeft(appIcon).dy; expect(appIconBottomPadding, 0.0); final double appVersionBottomPadding = tester.getTopLeft(appLegalese).dy - tester.getBottomLeft(appVersion).dy; expect(appVersionBottomPadding, 18.0); final double appLegaleseBottomPadding = tester.getTopLeft(appPowered).dy - tester.getBottomLeft(appLegalese).dy; expect(appLegaleseBottomPadding, 18.0); }); testWidgets('LicensePage has no extra padding between app icon and app powered text', (WidgetTester tester) async { // This is a regression test for https://github.com/flutter/flutter/issues/99559 const FlutterLogo logo = FlutterLogo(); await tester.pumpWidget( const MaterialApp( title: 'Pirate app', home: Center( child: LicensePage( applicationIcon: logo, ), ), ), ); final Finder appName = find.text('LicensePage test app'); final Finder appIcon = find.byType(FlutterLogo); final Finder appVersion = find.text('0.1.2'); final Finder appLegalese = find.text('I am the very model of a modern major general.'); final Finder appPowered = find.text('Powered by Flutter'); expect(appName, findsNothing); expect(appIcon, findsOneWidget); expect(appVersion, findsNothing); expect(appLegalese, findsNothing); expect(appPowered, findsOneWidget); // Padding between app icon and app powered text. final double appIconBottomPadding = tester.getTopLeft(appPowered).dy - tester.getBottomLeft(appIcon).dy; expect(appIconBottomPadding, 18.0); }); testWidgets('Error handling test', (WidgetTester tester) async { LicenseRegistry.addLicense(() => Stream<LicenseEntry>.error(Exception('Injected failure'))); await tester.pumpWidget(const MaterialApp(home: Material(child: AboutListTile()))); await tester.tap(find.byType(ListTile)); await tester.pump(); await tester.pump(const Duration(seconds: 2)); await tester.tap(find.text('VIEW LICENSES')); await tester.pump(); await tester.pump(const Duration(seconds: 2)); final Finder finder = find.byWidgetPredicate((Widget widget) => widget.runtimeType.toString() == '_PackagesView'); // force the stream to complete (has to be done in a runAsync block since it's areal async process) await tester.runAsync(() => (tester.firstState(finder) as dynamic).licenses as Future<dynamic>); // ignore: avoid_dynamic_calls expect(tester.takeException().toString(), 'Exception: Injected failure'); await tester.pumpAndSettle(); expect(tester.takeException().toString(), 'Exception: Injected failure'); expect(find.text('Exception: Injected failure'), findsOneWidget); }); } class FakeLicenseEntry extends LicenseEntry { FakeLicenseEntry(); bool get packagesCalled => _packagesCalled; bool _packagesCalled = false; @override Iterable<LicenseParagraph> paragraphs = <LicenseParagraph>[]; @override Iterable<String> get packages { _packagesCalled = true; return <String>[]; } } class LicensePageObserver extends NavigatorObserver { int licensePageCount = 0; @override void didPush(Route<dynamic> route, Route<dynamic>? previousRoute) { if (route is MaterialPageRoute<dynamic>) { licensePageCount++; } super.didPush(route, previousRoute); } } class AboutDialogObserver extends NavigatorObserver { int dialogCount = 0; @override void didPush(Route<dynamic> route, Route<dynamic>? previousRoute) { if (route is DialogRoute) { dialogCount++; } super.didPush(route, previousRoute); } }