| // 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/material.dart'; |
| import 'package:flutter/services.dart'; |
| import 'package:flutter_test/flutter_test.dart'; |
| |
| void main() { |
| final List<DropdownMenuEntry<TestMenu>> menuChildren = <DropdownMenuEntry<TestMenu>>[]; |
| |
| for (final TestMenu value in TestMenu.values) { |
| final DropdownMenuEntry<TestMenu> entry = DropdownMenuEntry<TestMenu>(value: value, label: value.label); |
| menuChildren.add(entry); |
| } |
| |
| Widget buildTest<T extends Enum>(ThemeData themeData, List<DropdownMenuEntry<T>> entries, |
| {double? width, double? menuHeight, Widget? leadingIcon, Widget? label}) { |
| return MaterialApp( |
| theme: themeData, |
| home: Scaffold( |
| body: DropdownMenu<T>( |
| label: label, |
| leadingIcon: leadingIcon, |
| width: width, |
| menuHeight: menuHeight, |
| dropdownMenuEntries: entries, |
| ), |
| ), |
| ); |
| } |
| |
| testWidgets('DropdownMenu defaults', (WidgetTester tester) async { |
| final ThemeData themeData = ThemeData(); |
| await tester.pumpWidget(buildTest(themeData, menuChildren)); |
| |
| final EditableText editableText = tester.widget(find.byType(EditableText)); |
| expect(editableText.style.color, themeData.textTheme.labelLarge!.color); |
| expect(editableText.style.background, themeData.textTheme.labelLarge!.background); |
| expect(editableText.style.shadows, themeData.textTheme.labelLarge!.shadows); |
| expect(editableText.style.decoration, themeData.textTheme.labelLarge!.decoration); |
| expect(editableText.style.locale, themeData.textTheme.labelLarge!.locale); |
| expect(editableText.style.wordSpacing, themeData.textTheme.labelLarge!.wordSpacing); |
| |
| final TextField textField = tester.widget(find.byType(TextField)); |
| expect(textField.decoration?.border, const OutlineInputBorder()); |
| |
| await tester.tap(find.widgetWithIcon(IconButton, Icons.arrow_drop_down).first); |
| await tester.pump(); |
| expect(find.byType(MenuAnchor), findsOneWidget); |
| |
| final Finder menuMaterial = find.ancestor( |
| of: find.widgetWithText(TextButton, TestMenu.mainMenu0.label), |
| matching: find.byType(Material), |
| ).last; |
| Material material = tester.widget<Material>(menuMaterial); |
| expect(material.color, themeData.colorScheme.surface); |
| expect(material.shadowColor, themeData.colorScheme.shadow); |
| expect(material.surfaceTintColor, themeData.colorScheme.surfaceTint); |
| expect(material.elevation, 3.0); |
| expect(material.shape, const RoundedRectangleBorder(borderRadius: BorderRadius.all(Radius.circular(4.0)))); |
| |
| final Finder buttonMaterial = find.descendant( |
| of: find.byType(TextButton), |
| matching: find.byType(Material), |
| ).last; |
| |
| material = tester.widget<Material>(buttonMaterial); |
| expect(material.color, Colors.transparent); |
| expect(material.elevation, 0.0); |
| expect(material.shape, const RoundedRectangleBorder()); |
| expect(material.textStyle?.color, themeData.colorScheme.onSurface); |
| }); |
| |
| testWidgets('DropdownMenu can be disabled', (WidgetTester tester) async { |
| final ThemeData themeData = ThemeData(); |
| await tester.pumpWidget( |
| MaterialApp( |
| theme: themeData, |
| home: Scaffold( |
| body: SafeArea( |
| child: DropdownMenu<TestMenu>( |
| enabled: false, |
| dropdownMenuEntries: menuChildren, |
| ), |
| ), |
| ), |
| ), |
| ); |
| |
| final TextField textField = tester.widget(find.byType(TextField)); |
| expect(textField.decoration?.enabled, false); |
| final Finder menuMaterial = find.ancestor( |
| of: find.byType(SingleChildScrollView), |
| matching: find.byType(Material), |
| ); |
| expect(menuMaterial, findsNothing); |
| |
| await tester.tap(find.byType(TextField)); |
| await tester.pump(); |
| final Finder updatedMenuMaterial = find.ancestor( |
| of: find.byType(SingleChildScrollView), |
| matching: find.byType(Material), |
| ); |
| expect(updatedMenuMaterial, findsNothing); |
| }); |
| |
| testWidgets('The width of the text field should always be the same as the menu view', |
| (WidgetTester tester) async { |
| |
| final ThemeData themeData = ThemeData(); |
| await tester.pumpWidget( |
| MaterialApp( |
| theme: themeData, |
| home: Scaffold( |
| body: SafeArea( |
| child: DropdownMenu<TestMenu>( |
| dropdownMenuEntries: menuChildren, |
| ), |
| ), |
| ), |
| ) |
| ); |
| |
| final Finder textField = find.byType(TextField); |
| final Size anchorSize = tester.getSize(textField); |
| expect(anchorSize, const Size(180.0, 54.0)); |
| |
| await tester.tap(find.byType(DropdownMenu<TestMenu>)); |
| await tester.pumpAndSettle(); |
| |
| final Finder menuMaterial = find.ancestor( |
| of: find.byType(SingleChildScrollView), |
| matching: find.byType(Material), |
| ); |
| final Size menuSize = tester.getSize(menuMaterial); |
| expect(menuSize, const Size(180.0, 304.0)); |
| |
| // The text field should have same width as the menu |
| // when the width property is not null. |
| await tester.pumpWidget(buildTest(themeData, menuChildren, width: 200.0)); |
| |
| final Finder anchor = find.byType(TextField); |
| final Size size = tester.getSize(anchor); |
| expect(size, const Size(200.0, 54.0)); |
| |
| await tester.tap(anchor); |
| await tester.pumpAndSettle(); |
| |
| final Finder updatedMenu = find.ancestor( |
| of: find.byType(SingleChildScrollView), |
| matching: find.byType(Material), |
| ); |
| final Size updatedMenuSize = tester.getSize(updatedMenu); |
| expect(updatedMenuSize, const Size(200.0, 304.0)); |
| }); |
| |
| testWidgets('The width property can customize the width of the dropdown menu', (WidgetTester tester) async { |
| final ThemeData themeData = ThemeData(); |
| final List<DropdownMenuEntry<ShortMenu>> shortMenuItems = <DropdownMenuEntry<ShortMenu>>[]; |
| |
| for (final ShortMenu value in ShortMenu.values) { |
| final DropdownMenuEntry<ShortMenu> entry = DropdownMenuEntry<ShortMenu>(value: value, label: value.label); |
| shortMenuItems.add(entry); |
| } |
| |
| const double customBigWidth = 250.0; |
| await tester.pumpWidget(buildTest(themeData, shortMenuItems, width: customBigWidth)); |
| RenderBox box = tester.firstRenderObject(find.byType(DropdownMenu<ShortMenu>)); |
| expect(box.size.width, customBigWidth); |
| |
| await tester.tap(find.byType(DropdownMenu<ShortMenu>)); |
| await tester.pump(); |
| expect(find.byType(MenuItemButton), findsNWidgets(6)); |
| Size buttonSize = tester.getSize(find.widgetWithText(MenuItemButton, 'I0').last); |
| expect(buttonSize.width, customBigWidth); |
| |
| // reset test |
| await tester.pumpWidget(Container()); |
| const double customSmallWidth = 100.0; |
| await tester.pumpWidget(buildTest(themeData, shortMenuItems, width: customSmallWidth)); |
| box = tester.firstRenderObject(find.byType(DropdownMenu<ShortMenu>)); |
| expect(box.size.width, customSmallWidth); |
| |
| await tester.tap(find.byType(DropdownMenu<ShortMenu>)); |
| await tester.pump(); |
| expect(find.byType(MenuItemButton), findsNWidgets(6)); |
| buttonSize = tester.getSize(find.widgetWithText(MenuItemButton, 'I0').last); |
| expect(buttonSize.width, customSmallWidth); |
| }); |
| |
| testWidgets('The menuHeight property can be used to show a shorter scrollable menu list instead of the complete list', |
| (WidgetTester tester) async { |
| final ThemeData themeData = ThemeData(); |
| await tester.pumpWidget(buildTest(themeData, menuChildren)); |
| |
| await tester.tap(find.byType(DropdownMenu<TestMenu>)); |
| await tester.pumpAndSettle(); |
| |
| final Element firstItem = tester.element(find.widgetWithText(MenuItemButton, 'Item 0').last); |
| final RenderBox firstBox = firstItem.renderObject! as RenderBox; |
| final Offset topLeft = firstBox.localToGlobal(firstBox.size.topLeft(Offset.zero)); |
| final Element lastItem = tester.element(find.widgetWithText(MenuItemButton, 'Item 5').last); |
| final RenderBox lastBox = lastItem.renderObject! as RenderBox; |
| final Offset bottomRight = lastBox.localToGlobal(lastBox.size.bottomRight(Offset.zero)); |
| // height = height of MenuItemButton * 6 = 48 * 6 |
| expect(bottomRight.dy - topLeft.dy, 288.0); |
| |
| final Finder menuView = find.ancestor( |
| of: find.byType(SingleChildScrollView), |
| matching: find.byType(Padding), |
| ).first; |
| final Size menuViewSize = tester.getSize(menuView); |
| expect(menuViewSize, const Size(180.0, 304.0)); // 304 = 288 + vertical padding(2 * 8) |
| |
| // Constrains the menu height. |
| await tester.pumpWidget(Container()); |
| await tester.pumpWidget(buildTest(themeData, menuChildren, menuHeight: 100)); |
| await tester.pumpAndSettle(); |
| |
| await tester.tap(find.byType(DropdownMenu<TestMenu>)); |
| await tester.pumpAndSettle(); |
| |
| final Finder updatedMenu = find.ancestor( |
| of: find.byType(SingleChildScrollView), |
| matching: find.byType(Padding), |
| ).first; |
| |
| final Size updatedMenuSize = tester.getSize(updatedMenu); |
| expect(updatedMenuSize, const Size(180.0, 100.0)); |
| }); |
| |
| testWidgets('The text in the menu button should be aligned with the text of ' |
| 'the text field - LTR', (WidgetTester tester) async { |
| final ThemeData themeData = ThemeData(); |
| // Default text field (without leading icon). |
| await tester.pumpWidget(buildTest(themeData, menuChildren, label: const Text('label'))); |
| |
| final Finder label = find.text('label'); |
| final Offset labelTopLeft = tester.getTopLeft(label); |
| |
| await tester.tap(find.byType(DropdownMenu<TestMenu>)); |
| await tester.pumpAndSettle(); |
| final Finder itemText = find.text('Item 0').last; |
| final Offset itemTextTopLeft = tester.getTopLeft(itemText); |
| |
| expect(labelTopLeft.dx, equals(itemTextTopLeft.dx)); |
| |
| // Test when the text field has a leading icon. |
| await tester.pumpWidget(Container()); |
| await tester.pumpWidget(buildTest(themeData, menuChildren, |
| leadingIcon: const Icon(Icons.search), |
| label: const Text('label'), |
| )); |
| |
| final Finder leadingIcon = find.widgetWithIcon(Container, Icons.search); |
| final double iconWidth = tester.getSize(leadingIcon).width; |
| final Finder updatedLabel = find.text('label'); |
| final Offset updatedLabelTopLeft = tester.getTopLeft(updatedLabel); |
| |
| await tester.tap(find.byType(DropdownMenu<TestMenu>)); |
| await tester.pumpAndSettle(); |
| final Finder updatedItemText = find.text('Item 0').last; |
| final Offset updatedItemTextTopLeft = tester.getTopLeft(updatedItemText); |
| |
| |
| expect(updatedLabelTopLeft.dx, equals(updatedItemTextTopLeft.dx)); |
| expect(updatedLabelTopLeft.dx, equals(iconWidth)); |
| |
| // Test when then leading icon is a widget with a bigger size. |
| await tester.pumpWidget(Container()); |
| await tester.pumpWidget(buildTest(themeData, menuChildren, |
| leadingIcon: const SizedBox( |
| width: 75.0, |
| child: Icon(Icons.search)), |
| label: const Text('label'), |
| )); |
| |
| final Finder largeLeadingIcon = find.widgetWithIcon(Container, Icons.search); |
| final double largeIconWidth = tester.getSize(largeLeadingIcon).width; |
| final Finder updatedLabel1 = find.text('label'); |
| final Offset updatedLabelTopLeft1 = tester.getTopLeft(updatedLabel1); |
| |
| await tester.tap(find.byType(DropdownMenu<TestMenu>)); |
| await tester.pumpAndSettle(); |
| final Finder updatedItemText1 = find.text('Item 0').last; |
| final Offset updatedItemTextTopLeft1 = tester.getTopLeft(updatedItemText1); |
| |
| |
| expect(updatedLabelTopLeft1.dx, equals(updatedItemTextTopLeft1.dx)); |
| expect(updatedLabelTopLeft1.dx, equals(largeIconWidth)); |
| }); |
| |
| testWidgets('The text in the menu button should be aligned with the text of ' |
| 'the text field - RTL', (WidgetTester tester) async { |
| final ThemeData themeData = ThemeData(); |
| // Default text field (without leading icon). |
| await tester.pumpWidget(MaterialApp( |
| theme: themeData, |
| home: Scaffold( |
| body: Directionality( |
| textDirection: TextDirection.rtl, |
| child: DropdownMenu<TestMenu>( |
| label: const Text('label'), |
| dropdownMenuEntries: menuChildren, |
| ), |
| ), |
| ), |
| )); |
| |
| final Finder label = find.text('label'); |
| final Offset labelTopRight = tester.getTopRight(label); |
| |
| await tester.tap(find.byType(DropdownMenu<TestMenu>)); |
| await tester.pumpAndSettle(); |
| final Finder itemText = find.text('Item 0').last; |
| final Offset itemTextTopRight = tester.getTopRight(itemText); |
| |
| expect(labelTopRight.dx, equals(itemTextTopRight.dx)); |
| |
| // Test when the text field has a leading icon. |
| await tester.pumpWidget(Container()); |
| await tester.pumpWidget(MaterialApp( |
| theme: themeData, |
| home: Scaffold( |
| body: Directionality( |
| textDirection: TextDirection.rtl, |
| child: DropdownMenu<TestMenu>( |
| leadingIcon: const Icon(Icons.search), |
| label: const Text('label'), |
| dropdownMenuEntries: menuChildren, |
| ), |
| ), |
| ), |
| )); |
| await tester.pump(); |
| |
| final Finder leadingIcon = find.widgetWithIcon(Container, Icons.search); |
| final double iconWidth = tester.getSize(leadingIcon).width; |
| final Offset dropdownMenuTopRight = tester.getTopRight(find.byType(DropdownMenu<TestMenu>)); |
| final Finder updatedLabel = find.text('label'); |
| final Offset updatedLabelTopRight = tester.getTopRight(updatedLabel); |
| |
| await tester.tap(find.byType(DropdownMenu<TestMenu>)); |
| await tester.pumpAndSettle(); |
| final Finder updatedItemText = find.text('Item 0').last; |
| final Offset updatedItemTextTopRight = tester.getTopRight(updatedItemText); |
| |
| |
| expect(updatedLabelTopRight.dx, equals(updatedItemTextTopRight.dx)); |
| expect(updatedLabelTopRight.dx, equals(dropdownMenuTopRight.dx - iconWidth)); |
| |
| // Test when then leading icon is a widget with a bigger size. |
| await tester.pumpWidget(Container()); |
| await tester.pumpWidget(MaterialApp( |
| theme: themeData, |
| home: Scaffold( |
| body: Directionality( |
| textDirection: TextDirection.rtl, |
| child: DropdownMenu<TestMenu>( |
| leadingIcon: const SizedBox(width: 75.0, child: Icon(Icons.search)), |
| label: const Text('label'), |
| dropdownMenuEntries: menuChildren, |
| ), |
| ), |
| ), |
| )); |
| await tester.pump(); |
| |
| final Finder largeLeadingIcon = find.widgetWithIcon(Container, Icons.search); |
| final double largeIconWidth = tester.getSize(largeLeadingIcon).width; |
| final Offset updatedDropdownMenuTopRight = tester.getTopRight(find.byType(DropdownMenu<TestMenu>)); |
| final Finder updatedLabel1 = find.text('label'); |
| final Offset updatedLabelTopRight1 = tester.getTopRight(updatedLabel1); |
| |
| await tester.tap(find.byType(DropdownMenu<TestMenu>)); |
| await tester.pumpAndSettle(); |
| final Finder updatedItemText1 = find.text('Item 0').last; |
| final Offset updatedItemTextTopRight1 = tester.getTopRight(updatedItemText1); |
| |
| |
| expect(updatedLabelTopRight1.dx, equals(updatedItemTextTopRight1.dx)); |
| expect(updatedLabelTopRight1.dx, equals(updatedDropdownMenuTopRight.dx - largeIconWidth)); |
| }); |
| |
| testWidgets('DropdownMenu has default trailing icon button', (WidgetTester tester) async { |
| final ThemeData themeData = ThemeData(); |
| await tester.pumpWidget(buildTest(themeData, menuChildren)); |
| await tester.pump(); |
| |
| final Finder iconButton = find.widgetWithIcon(IconButton, Icons.arrow_drop_down).first; |
| expect(iconButton, findsOneWidget); |
| |
| await tester.tap(iconButton); |
| await tester.pump(); |
| |
| final Finder menuMaterial = find.ancestor( |
| of: find.widgetWithText(MenuItemButton, TestMenu.mainMenu0.label), |
| matching: find.byType(Material), |
| ).last; |
| expect(menuMaterial, findsOneWidget); |
| }); |
| |
| testWidgets('DropdownMenu can customize trailing icon button', (WidgetTester tester) async { |
| final ThemeData themeData = ThemeData(); |
| await tester.pumpWidget(MaterialApp( |
| theme: themeData, |
| home: Scaffold( |
| body: DropdownMenu<TestMenu>( |
| trailingIcon: const Icon(Icons.ac_unit), |
| dropdownMenuEntries: menuChildren, |
| ), |
| ), |
| )); |
| await tester.pump(); |
| |
| final Finder iconButton = find.widgetWithIcon(IconButton, Icons.ac_unit).first; |
| expect(iconButton, findsOneWidget); |
| |
| await tester.tap(iconButton); |
| await tester.pump(); |
| |
| final Finder menuMaterial = find.ancestor( |
| of: find.widgetWithText(MenuItemButton, TestMenu.mainMenu0.label), |
| matching: find.byType(Material), |
| ).last; |
| expect(menuMaterial, findsOneWidget); |
| }); |
| |
| testWidgets('Down key can highlight the menu item', (WidgetTester tester) async { |
| final ThemeData themeData = ThemeData(); |
| await tester.pumpWidget(MaterialApp( |
| theme: themeData, |
| home: Scaffold( |
| body: DropdownMenu<TestMenu>( |
| trailingIcon: const Icon(Icons.ac_unit), |
| dropdownMenuEntries: menuChildren, |
| ), |
| ), |
| )); |
| |
| await tester.tap(find.byType(DropdownMenu<TestMenu>)); |
| await tester.pump(); |
| |
| await simulateKeyDownEvent(LogicalKeyboardKey.arrowDown); |
| await tester.pumpAndSettle(); |
| Finder button0Material = find.descendant( |
| of: find.widgetWithText(MenuItemButton, 'Item 0').last, |
| matching: find.byType(Material), |
| ); |
| |
| Material item0material = tester.widget<Material>(button0Material); |
| expect(item0material.color, themeData.colorScheme.onSurface.withOpacity(0.12)); |
| |
| // Press down key one more time, the highlight should move to the next item. |
| await simulateKeyDownEvent(LogicalKeyboardKey.arrowDown); |
| await tester.pumpAndSettle(); |
| final Finder button1Material = find.descendant( |
| of: find.widgetWithText(MenuItemButton, 'Menu 1').last, |
| matching: find.byType(Material), |
| ); |
| final Material item1material = tester.widget<Material>(button1Material); |
| expect(item1material.color, themeData.colorScheme.onSurface.withOpacity(0.12)); |
| button0Material = find.descendant( |
| of: find.widgetWithText(MenuItemButton, 'Item 0').last, |
| matching: find.byType(Material), |
| ); |
| item0material = tester.widget<Material>(button0Material); |
| expect(item0material.color, Colors.transparent); // the previous item should not be highlighted. |
| }); |
| |
| testWidgets('Up key can highlight the menu item', (WidgetTester tester) async { |
| final ThemeData themeData = ThemeData(); |
| await tester.pumpWidget(MaterialApp( |
| theme: themeData, |
| home: Scaffold( |
| body: DropdownMenu<TestMenu>( |
| dropdownMenuEntries: menuChildren, |
| ), |
| ), |
| )); |
| |
| await tester.tap(find.byType(DropdownMenu<TestMenu>)); |
| await tester.pump(); |
| |
| await simulateKeyDownEvent(LogicalKeyboardKey.arrowUp); |
| await tester.pumpAndSettle(); |
| Finder button5Material = find.descendant( |
| of: find.widgetWithText(MenuItemButton, 'Item 5').last, |
| matching: find.byType(Material), |
| ); |
| |
| Material item5material = tester.widget<Material>(button5Material); |
| expect(item5material.color, themeData.colorScheme.onSurface.withOpacity(0.12)); |
| |
| // Press up key one more time, the highlight should move up to the item 4. |
| await simulateKeyDownEvent(LogicalKeyboardKey.arrowUp); |
| await tester.pumpAndSettle(); |
| final Finder button4Material = find.descendant( |
| of: find.widgetWithText(MenuItemButton, 'Item 4').last, |
| matching: find.byType(Material), |
| ); |
| final Material item4material = tester.widget<Material>(button4Material); |
| expect(item4material.color, themeData.colorScheme.onSurface.withOpacity(0.12)); |
| button5Material = find.descendant( |
| of: find.widgetWithText(MenuItemButton, 'Item 5').last, |
| matching: find.byType(Material), |
| ); |
| |
| item5material = tester.widget<Material>(button5Material); |
| expect(item5material.color, Colors.transparent); // the previous item should not be highlighted. |
| }); |
| |
| testWidgets('The text input should match the label of the menu item while pressing down key', (WidgetTester tester) async { |
| final ThemeData themeData = ThemeData(); |
| await tester.pumpWidget(MaterialApp( |
| theme: themeData, |
| home: Scaffold( |
| body: DropdownMenu<TestMenu>( |
| dropdownMenuEntries: menuChildren, |
| ), |
| ), |
| )); |
| |
| // Open the menu |
| await tester.tap(find.byType(DropdownMenu<TestMenu>)); |
| await tester.pump(); |
| |
| await simulateKeyDownEvent(LogicalKeyboardKey.arrowDown); |
| await tester.pump(); |
| expect(find.widgetWithText(TextField, 'Item 0'), findsOneWidget); |
| |
| // Press down key one more time to the next item. |
| await simulateKeyDownEvent(LogicalKeyboardKey.arrowDown); |
| await tester.pump(); |
| expect(find.widgetWithText(TextField, 'Menu 1'), findsOneWidget); |
| |
| // Press down to the next item. |
| await simulateKeyDownEvent(LogicalKeyboardKey.arrowDown); |
| await tester.pump(); |
| expect(find.widgetWithText(TextField, 'Item 2'), findsOneWidget); |
| }); |
| |
| testWidgets('The text input should match the label of the menu item while pressing up key', (WidgetTester tester) async { |
| final ThemeData themeData = ThemeData(); |
| await tester.pumpWidget(MaterialApp( |
| theme: themeData, |
| home: Scaffold( |
| body: DropdownMenu<TestMenu>( |
| dropdownMenuEntries: menuChildren, |
| ), |
| ), |
| )); |
| |
| // Open the menu |
| await tester.tap(find.byType(DropdownMenu<TestMenu>)); |
| await tester.pump(); |
| |
| await simulateKeyDownEvent(LogicalKeyboardKey.arrowUp); |
| await tester.pump(); |
| expect(find.widgetWithText(TextField, 'Item 5'), findsOneWidget); |
| |
| // Press up key one more time to the upper item. |
| await simulateKeyDownEvent(LogicalKeyboardKey.arrowUp); |
| await tester.pump(); |
| expect(find.widgetWithText(TextField, 'Item 4'), findsOneWidget); |
| |
| // Press up to the upper item. |
| await simulateKeyDownEvent(LogicalKeyboardKey.arrowUp); |
| await tester.pump(); |
| expect(find.widgetWithText(TextField, 'Item 3'), findsOneWidget); |
| }); |
| |
| testWidgets('Disabled button will be skipped while pressing up/down key', (WidgetTester tester) async { |
| final ThemeData themeData = ThemeData(); |
| final List<DropdownMenuEntry<TestMenu>> menuWithDisabledItems = <DropdownMenuEntry<TestMenu>>[ |
| const DropdownMenuEntry<TestMenu>(value: TestMenu.mainMenu0, label: 'Item 0'), |
| const DropdownMenuEntry<TestMenu>(value: TestMenu.mainMenu1, label: 'Item 1', enabled: false), |
| const DropdownMenuEntry<TestMenu>(value: TestMenu.mainMenu2, label: 'Item 2', enabled: false), |
| const DropdownMenuEntry<TestMenu>(value: TestMenu.mainMenu3, label: 'Item 3'), |
| const DropdownMenuEntry<TestMenu>(value: TestMenu.mainMenu4, label: 'Item 4'), |
| const DropdownMenuEntry<TestMenu>(value: TestMenu.mainMenu5, label: 'Item 5', enabled: false), |
| ]; |
| await tester.pumpWidget(MaterialApp( |
| theme: themeData, |
| home: Scaffold( |
| body: DropdownMenu<TestMenu>( |
| dropdownMenuEntries: menuWithDisabledItems, |
| ), |
| ), |
| )); |
| await tester.pump(); |
| |
| // Open the menu |
| await tester.tap(find.byType(DropdownMenu<TestMenu>)); |
| await tester.pumpAndSettle(); |
| |
| await simulateKeyDownEvent(LogicalKeyboardKey.arrowDown); |
| await tester.pumpAndSettle(); |
| final Finder button0Material = find.descendant( |
| of: find.widgetWithText(MenuItemButton, 'Item 0').last, |
| matching: find.byType(Material), |
| ); |
| final Material item0Material = tester.widget<Material>(button0Material); |
| expect(item0Material.color, themeData.colorScheme.onSurface.withOpacity(0.12)); // first item can be highlighted as it's enabled. |
| |
| // Continue to press down key. Item 3 should be highlighted as Menu 1 and Item 2 are both disabled. |
| await simulateKeyDownEvent(LogicalKeyboardKey.arrowDown); |
| await tester.pumpAndSettle(); |
| final Finder button3Material = find.descendant( |
| of: find.widgetWithText(MenuItemButton, 'Item 3').last, |
| matching: find.byType(Material), |
| ); |
| final Material item3Material = tester.widget<Material>(button3Material); |
| expect(item3Material.color, themeData.colorScheme.onSurface.withOpacity(0.12)); |
| }); |
| |
| testWidgets('Searching is enabled by default', (WidgetTester tester) async { |
| final ThemeData themeData = ThemeData(); |
| await tester.pumpWidget(MaterialApp( |
| theme: themeData, |
| home: Scaffold( |
| body: DropdownMenu<TestMenu>( |
| dropdownMenuEntries: menuChildren, |
| ), |
| ), |
| )); |
| |
| // Open the menu |
| await tester.tap(find.byType(DropdownMenu<TestMenu>)); |
| await tester.pump(); |
| await tester.enterText(find.byType(TextField).first, 'Menu 1'); |
| await tester.pumpAndSettle(); |
| final Finder buttonMaterial = find.descendant( |
| of: find.widgetWithText(MenuItemButton, 'Menu 1').last, |
| matching: find.byType(Material), |
| ); |
| final Material itemMaterial = tester.widget<Material>(buttonMaterial); |
| expect(itemMaterial.color, themeData.colorScheme.onSurface.withOpacity(0.12)); // Menu 1 button is highlighted. |
| }); |
| |
| testWidgets('Highlight can move up/down from the searching result', (WidgetTester tester) async { |
| final ThemeData themeData = ThemeData(); |
| await tester.pumpWidget(MaterialApp( |
| theme: themeData, |
| home: Scaffold( |
| body: DropdownMenu<TestMenu>( |
| dropdownMenuEntries: menuChildren, |
| ), |
| ), |
| )); |
| |
| // Open the menu |
| await tester.tap(find.byType(DropdownMenu<TestMenu>)); |
| await tester.pump(); |
| await tester.enterText(find.byType(TextField).first, 'Menu 1'); |
| await tester.pumpAndSettle(); |
| final Finder buttonMaterial = find.descendant( |
| of: find.widgetWithText(MenuItemButton, 'Menu 1').last, |
| matching: find.byType(Material), |
| ); |
| final Material itemMaterial = tester.widget<Material>(buttonMaterial); |
| expect(itemMaterial.color, themeData.colorScheme.onSurface.withOpacity(0.12)); |
| |
| // Press up to the upper item (Item 0). |
| await simulateKeyDownEvent(LogicalKeyboardKey.arrowUp); |
| await tester.pumpAndSettle(); |
| expect(find.widgetWithText(TextField, 'Item 0'), findsOneWidget); |
| final Finder button0Material = find.descendant( |
| of: find.widgetWithText(MenuItemButton, 'Item 0').last, |
| matching: find.byType(Material), |
| ); |
| final Material item0Material = tester.widget<Material>(button0Material); |
| expect(item0Material.color, themeData.colorScheme.onSurface.withOpacity(0.12)); // Move up, the 'Item 0' is highlighted. |
| |
| // Continue to move up to the last item (Item 5). |
| await simulateKeyDownEvent(LogicalKeyboardKey.arrowUp); |
| await tester.pumpAndSettle(); |
| expect(find.widgetWithText(TextField, 'Item 5'), findsOneWidget); |
| final Finder button5Material = find.descendant( |
| of: find.widgetWithText(MenuItemButton, 'Item 5').last, |
| matching: find.byType(Material), |
| ); |
| final Material item5Material = tester.widget<Material>(button5Material); |
| expect(item5Material.color, themeData.colorScheme.onSurface.withOpacity(0.12)); |
| }); |
| |
| testWidgets('Filtering is disabled by default', (WidgetTester tester) async { |
| final ThemeData themeData = ThemeData(); |
| await tester.pumpWidget(MaterialApp( |
| theme: themeData, |
| home: Scaffold( |
| body: DropdownMenu<TestMenu>( |
| dropdownMenuEntries: menuChildren, |
| ), |
| ), |
| )); |
| |
| // Open the menu |
| await tester.tap(find.byType(DropdownMenu<TestMenu>)); |
| await tester.pump(); |
| |
| await tester.enterText(find.byType(TextField).first, 'Menu 1'); |
| await tester.pumpAndSettle(); |
| for (final TestMenu menu in TestMenu.values) { |
| // One is layout for the _DropdownMenuBody, the other one is the real button item in the menu. |
| expect(find.widgetWithText(MenuItemButton, menu.label), findsNWidgets(2)); |
| } |
| }); |
| |
| testWidgets('Enable filtering', (WidgetTester tester) async { |
| final ThemeData themeData = ThemeData(); |
| await tester.pumpWidget(MaterialApp( |
| theme: themeData, |
| home: Scaffold( |
| body: DropdownMenu<TestMenu>( |
| enableFilter: true, |
| dropdownMenuEntries: menuChildren, |
| ), |
| ), |
| )); |
| |
| // Open the menu |
| await tester.tap(find.byType(DropdownMenu<TestMenu>)); |
| await tester.pump(); |
| |
| await tester.enterText(find |
| .byType(TextField) |
| .first, 'Menu 1'); |
| await tester.pumpAndSettle(); |
| for (final TestMenu menu in TestMenu.values) { |
| // 'Menu 1' should be 2, other items should only find one. |
| if (menu.label == TestMenu.mainMenu1.label) { |
| expect(find.widgetWithText(MenuItemButton, menu.label), findsNWidgets(2)); |
| } else { |
| expect(find.widgetWithText(MenuItemButton, menu.label), findsOneWidget); |
| } |
| } |
| }); |
| |
| testWidgets('The controller can access the value in the input field', (WidgetTester tester) async { |
| final ThemeData themeData = ThemeData(); |
| final TextEditingController controller = TextEditingController(); |
| await tester.pumpWidget(MaterialApp( |
| theme: themeData, |
| home: StatefulBuilder( |
| builder: (BuildContext context, StateSetter setState) { |
| return Scaffold( |
| body: DropdownMenu<TestMenu>( |
| enableFilter: true, |
| dropdownMenuEntries: menuChildren, |
| controller: controller, |
| ), |
| ); |
| } |
| ), |
| )); |
| |
| // Open the menu |
| await tester.tap(find.byType(DropdownMenu<TestMenu>)); |
| await tester.pump(); |
| final Finder item3 = find.widgetWithText(MenuItemButton, 'Item 3').last; |
| await tester.tap(item3); |
| await tester.pumpAndSettle(); |
| |
| expect(controller.text, 'Item 3'); |
| |
| await tester.enterText(find.byType(TextField).first, 'New Item'); |
| expect(controller.text, 'New Item'); |
| }); |
| |
| testWidgets('The onSelected gets called only when a selection is made', (WidgetTester tester) async { |
| int selectionCount = 0; |
| |
| final ThemeData themeData = ThemeData(); |
| final List<DropdownMenuEntry<TestMenu>> menuWithDisabledItems = <DropdownMenuEntry<TestMenu>>[ |
| const DropdownMenuEntry<TestMenu>(value: TestMenu.mainMenu0, label: 'Item 0'), |
| const DropdownMenuEntry<TestMenu>(value: TestMenu.mainMenu0, label: 'Item 1', enabled: false), |
| const DropdownMenuEntry<TestMenu>(value: TestMenu.mainMenu0, label: 'Item 2'), |
| const DropdownMenuEntry<TestMenu>(value: TestMenu.mainMenu0, label: 'Item 3'), |
| ]; |
| final TextEditingController controller = TextEditingController(); |
| await tester.pumpWidget(MaterialApp( |
| theme: themeData, |
| home: StatefulBuilder( |
| builder: (BuildContext context, StateSetter setState) { |
| return Scaffold( |
| body: DropdownMenu<TestMenu>( |
| dropdownMenuEntries: menuWithDisabledItems, |
| controller: controller, |
| onSelected: (_) { |
| setState(() { |
| selectionCount++; |
| }); |
| }, |
| ), |
| ); |
| } |
| ), |
| )); |
| |
| // Open the menu |
| await tester.tap(find.byType(DropdownMenu<TestMenu>)); |
| await tester.pump(); |
| |
| // Test onSelected on key press |
| await simulateKeyDownEvent(LogicalKeyboardKey.arrowDown); |
| await tester.pumpAndSettle(); |
| await tester.testTextInput.receiveAction(TextInputAction.done); |
| await tester.pumpAndSettle(); |
| expect(selectionCount, 1); |
| |
| // Disabled item doesn't trigger onSelected callback. |
| await tester.tap(find.byType(DropdownMenu<TestMenu>)); |
| await tester.pump(); |
| final Finder item1 = find.widgetWithText(MenuItemButton, 'Item 1').last; |
| await tester.tap(item1); |
| await tester.pumpAndSettle(); |
| |
| expect(controller.text, 'Item 0'); |
| expect(selectionCount, 1); |
| |
| final Finder item2 = find.widgetWithText(MenuItemButton, 'Item 2').last; |
| await tester.tap(item2); |
| await tester.pumpAndSettle(); |
| |
| expect(controller.text, 'Item 2'); |
| expect(selectionCount, 2); |
| |
| await tester.tap(find.byType(DropdownMenu<TestMenu>)); |
| await tester.pump(); |
| final Finder item3 = find.widgetWithText(MenuItemButton, 'Item 3').last; |
| await tester.tap(item3); |
| await tester.pumpAndSettle(); |
| |
| expect(controller.text, 'Item 3'); |
| expect(selectionCount, 3); |
| |
| // When typing something in the text field without selecting any of the options, |
| // the onSelected should not be called. |
| await tester.enterText(find.byType(TextField).first, 'New Item'); |
| expect(controller.text, 'New Item'); |
| expect(selectionCount, 3); |
| expect(find.widgetWithText(TextField, 'New Item'), findsOneWidget); |
| await tester.enterText(find.byType(TextField).first, ''); |
| expect(selectionCount, 3); |
| expect(controller.text.isEmpty, true); |
| }); |
| |
| |
| testWidgets('The selectedValue gives an initial text and highlights the according item', (WidgetTester tester) async { |
| final ThemeData themeData = ThemeData(); |
| final TextEditingController controller = TextEditingController(); |
| await tester.pumpWidget(MaterialApp( |
| theme: themeData, |
| home: StatefulBuilder( |
| builder: (BuildContext context, StateSetter setState) { |
| return Scaffold( |
| body: DropdownMenu<TestMenu>( |
| initialSelection: TestMenu.mainMenu3, |
| dropdownMenuEntries: menuChildren, |
| controller: controller, |
| ), |
| ); |
| } |
| ), |
| )); |
| |
| expect(find.widgetWithText(TextField, 'Item 3'), findsOneWidget); |
| |
| // Open the menu |
| await tester.tap(find.byType(DropdownMenu<TestMenu>)); |
| await tester.pump(); |
| |
| final Finder buttonMaterial = find.descendant( |
| of: find.widgetWithText(MenuItemButton, 'Item 3'), |
| matching: find.byType(Material), |
| ).last; |
| |
| // Validate the item 3 is highlighted. |
| final Material itemMaterial = tester.widget<Material>(buttonMaterial); |
| expect(itemMaterial.color, themeData.colorScheme.onSurface.withOpacity(0.12)); |
| }); |
| } |
| |
| enum TestMenu { |
| mainMenu0('Item 0'), |
| mainMenu1('Menu 1'), |
| mainMenu2('Item 2'), |
| mainMenu3('Item 3'), |
| mainMenu4('Item 4'), |
| mainMenu5('Item 5'); |
| |
| const TestMenu(this.label); |
| final String label; |
| } |
| |
| enum ShortMenu { |
| item0('I0'), |
| item1('I1'), |
| item2('I2'); |
| |
| const ShortMenu(this.label); |
| final String label; |
| } |
