// Copyright 2021 The Flutter team. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. // ignore_for_file: avoid_types_on_closure_parameters import 'package:flutter/material.dart'; import 'package:flutter_test/flutter_test.dart'; import 'package:material_3_demo/component_screen.dart'; import 'package:material_3_demo/main.dart'; void main() { testWidgets('Default main page shows all M3 components', (tester) async { widgetSetup(tester, 800, windowHeight: 7000); await tester.pumpWidget(const App()); // Elements on the app bar expect(find.text('Material 3'), findsOneWidget); expect( find.widgetWithIcon(AppBar, Icons.dark_mode_outlined), findsOneWidget); expect(find.widgetWithIcon(AppBar, Icons.filter_2), findsOneWidget); expect(find.widgetWithIcon(AppBar, Icons.palette_outlined), findsOneWidget); // Elements on the component screen // Common buttons expect(find.widgetWithText(ElevatedButton, 'Elevated'), findsNWidgets(2)); expect(find.widgetWithText(FilledButton, 'Filled'), findsNWidgets(2)); expect(find.widgetWithText(FilledButton, 'Filled tonal'), findsNWidgets(2)); expect(find.widgetWithText(OutlinedButton, 'Outlined'), findsNWidgets(2)); expect(find.widgetWithText(TextButton, 'Text'), findsNWidgets(2)); expect(find.widgetWithText(Buttons, 'Icon'), findsNWidgets(5)); // FABs expect( find.byType(FloatingActionButton), findsNWidgets( 6)); // 2 more show up in the bottom app bar. 1 more in the navigation rail expect(find.widgetWithText(FloatingActionButton, 'Create'), findsOneWidget); // Icon buttons expect(find.widgetWithIcon(IconButton, Icons.settings_outlined), findsNWidgets(8)); // Segmented buttons expect(find.byType(SegmentedButton), findsOneWidget); expect(find.byType(SegmentedButton), findsOneWidget); // Badges expect(find.byType(Badge), findsNWidgets(4)); // Progress indicators Finder circularProgressIndicator = find.byType(CircularProgressIndicator); expect(circularProgressIndicator, findsOneWidget); Finder linearProgressIndicator = find.byType(LinearProgressIndicator); expect(linearProgressIndicator, findsOneWidget); // Snackbar expect(find.widgetWithText(TextButton, 'Show snackbar'), findsOneWidget); // Bottom sheet expect(find.widgetWithText(TextButton, 'Show modal bottom sheet'), findsOneWidget); expect( find.widgetWithText(TextButton, 'Show bottom sheet'), findsOneWidget); // Cards expect(find.widgetWithText(Cards, 'Elevated'), findsOneWidget); expect(find.widgetWithText(Cards, 'Filled'), findsOneWidget); expect(find.widgetWithText(Cards, 'Outlined'), findsOneWidget); // Dialogs expect(find.widgetWithText(TextButton, 'Show dialog'), findsOneWidget); expect(find.widgetWithText(TextButton, 'Show full-screen dialog'), findsOneWidget); // Dividers expect(find.byKey(const Key('divider')), findsOneWidget); // Bottom app bar expect(find.byType(BottomAppBar), findsOneWidget); // Navigation bar // Third one is off screen in the scaffold expect(find.byType(NavigationBar), findsNWidgets(3)); // Navigation drawer expect(find.byType(Drawer), findsOneWidget); expect(find.widgetWithText(TextButton, 'Show modal navigation drawer'), findsOneWidget); // Navigation rail // Second one is off screen in the scaffold expect(find.byType(NavigationRail), findsNWidgets(2)); // Tabs expect(find.byType(TabBar), findsOneWidget); // Search expect(find.byType(SearchBar), findsOneWidget); // Top app bars expect(find.byType(AppBar), findsNWidgets(6)); // Checkboxes Finder checkboxExample = find.byType(CheckboxListTile); expect(checkboxExample, findsNWidgets(4)); // Chips expect(find.byType(ActionChip), findsNWidgets(4)); // includes Assist and Suggestion chip. expect(find.byType(FilterChip), findsNWidgets(2)); expect(find.byType(InputChip), findsNWidgets(2)); // Date and time pickers expect(find.widgetWithText(DatePicker, 'Show date picker'), findsOneWidget); expect(find.widgetWithText(TimePicker, 'Show time picker'), findsOneWidget); // Menus expect(find.byType(MenuAnchor), findsNWidgets(5)); expect(find.byType(DropdownMenu), findsOneWidget); expect(find.byType(DropdownMenu), findsOneWidget); // Radios Finder radioExample = find.byType(RadioListTile); expect(radioExample, findsNWidgets(3)); // Sliders expect(find.byType(Slider), findsNWidgets(2)); // Switches expect(find.byType(Switch), findsNWidgets(4)); // TextFields expect(find.widgetWithText(TextField, 'Disabled'), findsNWidgets(2)); expect(find.widgetWithText(TextField, 'Filled'), findsNWidgets(2)); expect(find.widgetWithText(TextField, 'Outlined'), findsNWidgets(2)); }); testWidgets( 'NavigationRail doesn\'t show when width value is small than 1000 ' '(in Portrait mode or narrow screen)', (tester) async { widgetSetup(tester, 999, windowHeight: 7000); await tester.pumpWidget(const App()); await tester.pumpAndSettle(); // When screen width is less than 1000, NavigationBar will show. At the same // time, the NavigationBar example still show up in the navigation group. expect(find.byType(NavigationBars), findsNWidgets(3)); // The real navBar, badges example and navBar example expect(find.widgetWithText(NavigationBar, 'Components'), findsOneWidget); expect(find.widgetWithText(NavigationBar, 'Color'), findsOneWidget); expect(find.widgetWithText(NavigationBar, 'Typography'), findsOneWidget); expect(find.widgetWithText(NavigationBar, 'Elevation'), findsOneWidget); expect(find.widgetWithText(NavigationBar, 'Explore'), findsOneWidget); expect(find.widgetWithText(NavigationBar, 'Pets'), findsOneWidget); expect(find.widgetWithText(NavigationBar, 'Account'), findsOneWidget); }); testWidgets( 'NavigationRail shows when width value is greater than or equal ' 'to 1000 (in Landscape mode or wider screen)', (tester) async { widgetSetup(tester, 1001, windowHeight: 3000); await tester.pumpWidget(const App()); await tester.pumpAndSettle(); // When screen width is greater than or equal to 1000, NavigationRail will show. // At the same time, the NavigationBar will NOT show. expect(find.byType(NavigationRail), findsNWidgets(2)); expect(find.byType(Tooltip, skipOffstage: false), findsWidgets); expect(find.widgetWithText(NavigationRail, 'Components'), findsOneWidget); expect(find.widgetWithText(NavigationRail, 'Color'), findsOneWidget); expect(find.widgetWithText(NavigationRail, 'Typography'), findsOneWidget); expect(find.widgetWithText(NavigationRail, 'Elevation'), findsOneWidget); expect(find.widgetWithText(NavigationBar, 'Explore'), findsOneWidget); expect(find.widgetWithText(NavigationBar, 'Pets'), findsOneWidget); expect(find.widgetWithText(NavigationBar, 'Account'), findsOneWidget); // the Navigation bar should be out of screen. final RenderBox box = tester.renderObject(find.widgetWithText(NavigationBar, 'Components')); expect(box.localToGlobal(Offset.zero), const Offset(0.0, 3080.0)); }); testWidgets( 'Material version switches between Material3 and Material2 when' 'the version icon is clicked', (tester) async { widgetSetup(tester, 450, windowHeight: 7000); await tester.pumpWidget(const App()); BuildContext defaultElevatedButton = tester.firstElement(find.byType(ElevatedButton)); BuildContext defaultIconButton = tester.firstElement(find.byType(IconButton)); BuildContext defaultFAB = tester.firstElement(find.byType(FloatingActionButton)); BuildContext defaultCard = tester.firstElement(find.widgetWithText(Card, 'Elevated')); BuildContext defaultChip = tester.firstElement(find.widgetWithText(ActionChip, 'Assist')); Finder dialog = find.text('Show dialog'); await tester.tap(dialog); await tester.pumpAndSettle(const Duration(microseconds: 500)); BuildContext defaultAlertDialog = tester.element(find.byType(AlertDialog)); expect(Theme.of(defaultAlertDialog).useMaterial3, true); Finder dismiss = find.text('Okay'); await tester.tap(dismiss); await tester.pumpAndSettle(const Duration(microseconds: 500)); expect(find.widgetWithIcon(AppBar, Icons.filter_2), findsOneWidget); expect(find.widgetWithIcon(AppBar, Icons.filter_3), findsNothing); expect(find.text('Material 3'), findsOneWidget); expect(Theme.of(defaultElevatedButton).useMaterial3, true); expect(Theme.of(defaultIconButton).useMaterial3, true); expect(Theme.of(defaultFAB).useMaterial3, true); expect(Theme.of(defaultCard).useMaterial3, true); expect(Theme.of(defaultChip).useMaterial3, true); Finder appbarM3Icon = find.descendant( of: find.byType(AppBar), matching: find.widgetWithIcon(IconButton, Icons.filter_2)); await tester.tap(appbarM3Icon); await tester.pumpAndSettle(const Duration(microseconds: 500)); BuildContext updatedElevatedButton = tester.firstElement(find.byType(ElevatedButton)); BuildContext updatedIconButton = tester.firstElement(find.byType(IconButton)); BuildContext updatedFAB = tester.firstElement(find.byType(FloatingActionButton)); BuildContext updatedCard = tester.firstElement(find.byType(Card)); BuildContext updatedChip = tester.firstElement(find.widgetWithText(ActionChip, 'Assist')); Finder updatedDialog = find.text('Show dialog'); await tester.tap(updatedDialog); await tester.pumpAndSettle(const Duration(microseconds: 500)); BuildContext updatedAlertDialog = tester.firstElement(find.byType(AlertDialog)); expect(Theme.of(updatedAlertDialog).useMaterial3, false); Finder updatedDismiss = find.text('Dismiss'); await tester.tap(updatedDismiss); await tester.pumpAndSettle(const Duration(microseconds: 500)); expect(find.widgetWithIcon(AppBar, Icons.filter_3), findsOneWidget); expect(find.widgetWithIcon(AppBar, Icons.filter_2), findsNothing); expect(find.text('Material 2'), findsOneWidget); expect(Theme.of(updatedElevatedButton).useMaterial3, false); expect(Theme.of(updatedIconButton).useMaterial3, false); expect(Theme.of(updatedFAB).useMaterial3, false); expect(Theme.of(updatedCard).useMaterial3, false); expect(Theme.of(updatedChip).useMaterial3, false); }); testWidgets( 'Other screens become Material2 mode after changing mode from ' 'main screen', (tester) async { await tester.pumpWidget(const App()); Finder appbarM2Icon = find.descendant( of: find.byType(AppBar), matching: find.widgetWithIcon(IconButton, Icons.filter_2)); await tester.tap(appbarM2Icon); Finder secondScreenIcon = find.descendant( of: find.byType(NavigationBar), matching: find.widgetWithIcon( NavigationDestination, Icons.format_paint_outlined)); await tester.tap(secondScreenIcon); await tester.pumpAndSettle(const Duration(microseconds: 500)); BuildContext lightThemeText = tester.element(find.text('Light ColorScheme')); expect(Theme.of(lightThemeText).useMaterial3, false); Finder thirdScreenIcon = find.descendant( of: find.byType(NavigationBar), matching: find.widgetWithIcon( NavigationDestination, Icons.text_snippet_outlined)); await tester.tap(thirdScreenIcon); await tester.pumpAndSettle(const Duration(microseconds: 500)); BuildContext displayLargeText = tester.element(find.text('Display Large')); expect(Theme.of(displayLargeText).useMaterial3, false); Finder fourthScreenIcon = find.descendant( of: find.byType(NavigationBar), matching: find.widgetWithIcon( NavigationDestination, Icons.invert_colors_on_outlined)); await tester.tap(fourthScreenIcon); await tester.pumpAndSettle(const Duration(microseconds: 500)); BuildContext material = tester.firstElement(find.byType(Material)); expect(Theme.of(material).useMaterial3, false); }); testWidgets( 'Brightness mode switches between dark and light when' 'the brightness icon is clicked', (tester) async { await tester.pumpWidget(const App()); Finder lightIcon = find.descendant( of: find.byType(AppBar), matching: find.widgetWithIcon(IconButton, Icons.light_mode_outlined)); Finder darkIcon = find.descendant( of: find.byType(AppBar), matching: find.widgetWithIcon(IconButton, Icons.dark_mode_outlined)); BuildContext appBar = tester.element(find.byType(AppBar).first); BuildContext body = tester.firstElement(find.byType(Scaffold).first); BuildContext navigationRail = tester.element( find.widgetWithIcon(NavigationRail, Icons.format_paint_outlined)); expect(darkIcon, findsOneWidget); expect(lightIcon, findsNothing); expect(Theme.of(appBar).brightness, Brightness.light); expect(Theme.of(body).brightness, Brightness.light); expect(Theme.of(navigationRail).brightness, Brightness.light); await tester.tap(darkIcon); await tester.pumpAndSettle(const Duration(microseconds: 500)); BuildContext appBar2 = tester.element(find.byType(AppBar).first); BuildContext body2 = tester.element(find.byType(Scaffold).first); BuildContext navigationRail2 = tester.element( find.widgetWithIcon(NavigationRail, Icons.format_paint_outlined)); expect(darkIcon, findsNothing); expect(lightIcon, findsOneWidget); expect(Theme.of(appBar2).brightness, Brightness.dark); expect(Theme.of(body2).brightness, Brightness.dark); expect(Theme.of(navigationRail2).brightness, Brightness.dark); }); testWidgets('Color theme changes when a color is selected from menu', (tester) async { Color m3BaseColor = const Color(0xff6750a4); await tester.pumpWidget(Container()); await tester.pumpWidget(const App()); await tester.pump(); Finder menuIcon = find.descendant( of: find.byType(AppBar), matching: find.widgetWithIcon(IconButton, Icons.palette_outlined)); BuildContext appBar = tester .element(find.widgetWithIcon(AppBar, Icons.palette_outlined).first); BuildContext body = tester.element(find.byType(Scaffold).first); expect(Theme.of(appBar).primaryColor, m3BaseColor); expect(Theme.of(body).primaryColor, m3BaseColor); await tester.tap(menuIcon); await tester.pumpAndSettle(); await tester.tap(find.text('Blue').last); await tester.pumpAndSettle(); BuildContext appBar2 = tester.element(find.byType(AppBar).first); BuildContext body2 = tester.element(find.byType(Scaffold).first); ThemeData expectedTheme = ThemeData(colorSchemeSeed: Colors.blue); expect(Theme.of(appBar2).primaryColor, expectedTheme.primaryColor); expect(Theme.of(body2).primaryColor, expectedTheme.primaryColor); }); } void widgetSetup(WidgetTester tester, double windowWidth, {double? windowHeight}) { final height = windowHeight ?? 846; tester.view.devicePixelRatio = 2; final dpi = tester.view.devicePixelRatio; tester.view.physicalSize = Size(windowWidth * dpi, height * dpi); }