// 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:ui'; import 'package:flutter/material.dart'; import 'package:flutter/rendering.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, 56.0)); 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, 56.0)); 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 on desktop platforms', (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. }, variant: TargetPlatformVariant.desktop()); testWidgets('Up key can highlight the menu item on desktop platforms', (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. }, variant: TargetPlatformVariant.desktop()); testWidgets('The text input should match the label of the menu item ' 'while pressing down key on desktop platforms', (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); }, variant: TargetPlatformVariant.desktop()); testWidgets('The text input should match the label of the menu item ' 'while pressing up key on desktop platforms', (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); }, variant: TargetPlatformVariant.desktop()); testWidgets('Disabled button will be skipped while pressing up/down key on desktop platforms', (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)); }, variant: TargetPlatformVariant.desktop()); testWidgets('Searching is enabled by default on mobile platforms if initialSelection is non null', (WidgetTester tester) async { final ThemeData themeData = ThemeData(); await tester.pumpWidget(MaterialApp( theme: themeData, home: Scaffold( body: DropdownMenu<TestMenu>( initialSelection: TestMenu.mainMenu1, dropdownMenuEntries: menuChildren, ), ), )); // Open the menu await tester.tap(find.byType(DropdownMenu<TestMenu>)); await tester.pump(); 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. }, variant: TargetPlatformVariant.mobile()); testWidgets('Searching is enabled by default on desktop platform', (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. }, variant: TargetPlatformVariant.desktop()); testWidgets('Highlight can move up/down starting from the searching result on desktop platforms', (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)); }, variant: TargetPlatformVariant.desktop()); testWidgets('Filtering is disabled by default', (WidgetTester tester) async { final ThemeData themeData = ThemeData(); await tester.pumpWidget(MaterialApp( theme: themeData, home: Scaffold( body: DropdownMenu<TestMenu>( requestFocusOnTap: 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) { // 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>( requestFocusOnTap: true, 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>( requestFocusOnTap: true, 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(); late final bool isMobile; switch (themeData.platform) { case TargetPlatform.android: case TargetPlatform.iOS: case TargetPlatform.fuchsia: isMobile = true; break; case TargetPlatform.macOS: case TargetPlatform.linux: case TargetPlatform.windows: isMobile = false; break; } int expectedCount = isMobile ? 0 : 1; // Test onSelected on key press await simulateKeyDownEvent(LogicalKeyboardKey.arrowDown); await tester.pumpAndSettle(); await tester.testTextInput.receiveAction(TextInputAction.done); await tester.pumpAndSettle(); expect(selectionCount, expectedCount); // The desktop platform closed the menu when a completion action is pressed. So we need to reopen it. if (!isMobile) { await tester.tap(find.byType(DropdownMenu<TestMenu>)); await tester.pump(); } // Disabled item doesn't trigger onSelected callback. final Finder item1 = find.widgetWithText(MenuItemButton, 'Item 1').last; await tester.tap(item1); await tester.pumpAndSettle(); expect(controller.text, isMobile ? '' : 'Item 0'); expect(selectionCount, expectedCount); final Finder item2 = find.widgetWithText(MenuItemButton, 'Item 2').last; await tester.tap(item2); await tester.pumpAndSettle(); expect(controller.text, 'Item 2'); expect(selectionCount, ++expectedCount); 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, ++expectedCount); // On desktop platforms, when typing something in the text field without selecting any of the options, // the onSelected should not be called. if (!isMobile) { await tester.enterText(find.byType(TextField).first, 'New Item'); expect(controller.text, 'New Item'); expect(selectionCount, expectedCount); expect(find.widgetWithText(TextField, 'New Item'), findsOneWidget); await tester.enterText(find.byType(TextField).first, ''); expect(selectionCount, expectedCount); expect(controller.text.isEmpty, true); } }, variant: TargetPlatformVariant.all()); 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)); }); testWidgets('The default text input field should not be focused on mobile platforms ' 'when it is tapped', (WidgetTester tester) async { final ThemeData themeData = ThemeData(); Widget buildDropdownMenu() => MaterialApp( theme: themeData, home: Scaffold( body: Column( children: <Widget>[ DropdownMenu<TestMenu>( dropdownMenuEntries: menuChildren, ), ], ), ), ); // Test default condition. await tester.pumpWidget(buildDropdownMenu()); await tester.pump(); final Finder textFieldFinder = find.byType(TextField); final TextField result = tester.widget<TextField>(textFieldFinder); expect(result.canRequestFocus, false); }, variant: TargetPlatformVariant.mobile()); testWidgets('The text input field should be focused on desktop platforms ' 'when it is tapped', (WidgetTester tester) async { final ThemeData themeData = ThemeData(); Widget buildDropdownMenu() => MaterialApp( theme: themeData, home: Scaffold( body: Column( children: <Widget>[ DropdownMenu<TestMenu>( dropdownMenuEntries: menuChildren, ), ], ), ), ); await tester.pumpWidget(buildDropdownMenu()); await tester.pump(); final Finder textFieldFinder = find.byType(TextField); final TextField result = tester.widget<TextField>(textFieldFinder); expect(result.canRequestFocus, true); }, variant: TargetPlatformVariant.desktop()); testWidgets('If requestFocusOnTap is true, the text input field can request focus, ' 'otherwise it cannot request focus', (WidgetTester tester) async { final ThemeData themeData = ThemeData(); Widget buildDropdownMenu({required bool requestFocusOnTap}) => MaterialApp( theme: themeData, home: Scaffold( body: Column( children: <Widget>[ DropdownMenu<TestMenu>( requestFocusOnTap: requestFocusOnTap, dropdownMenuEntries: menuChildren, ), ], ), ), ); // Set requestFocusOnTap to true. await tester.pumpWidget(buildDropdownMenu(requestFocusOnTap: true)); await tester.pump(); final Finder textFieldFinder = find.byType(TextField); final TextField textField = tester.widget<TextField>(textFieldFinder); expect(textField.canRequestFocus, true); // Open the dropdown menu. await tester.tap(textFieldFinder); await tester.pump(); // Make a selection. await tester.tap(find.widgetWithText(MenuItemButton, 'Item 0').last); await tester.pump(); expect(find.widgetWithText(TextField, 'Item 0'), findsOneWidget); // Set requestFocusOnTap to false. await tester.pumpWidget(Container()); await tester.pumpWidget(buildDropdownMenu(requestFocusOnTap: false)); await tester.pumpAndSettle(); final Finder textFieldFinder1 = find.byType(TextField); final TextField textField1 = tester.widget<TextField>(textFieldFinder1); expect(textField1.canRequestFocus, false); // Open the dropdown menu. await tester.tap(textFieldFinder1); await tester.pump(); // Make a selection. await tester.tap(find.widgetWithText(MenuItemButton, 'Item 0').last); await tester.pump(); expect(find.widgetWithText(TextField, 'Item 0'), findsOneWidget); }, variant: TargetPlatformVariant.all()); testWidgets('If requestFocusOnTap is false, the mouse cursor should be clickable when hovered', (WidgetTester tester) async { Widget buildDropdownMenu() => MaterialApp( home: Scaffold( body: Column( children: <Widget>[ DropdownMenu<TestMenu>( requestFocusOnTap: false, dropdownMenuEntries: menuChildren, ), ], ), ), ); await tester.pumpWidget(buildDropdownMenu()); await tester.pumpAndSettle(); final Finder textFieldFinder = find.byType(TextField); final TextField textField = tester.widget<TextField>(textFieldFinder); expect(textField.canRequestFocus, false); final TestGesture gesture = await tester.createGesture(kind: PointerDeviceKind.mouse, pointer: 1); await gesture.moveTo(tester.getCenter(textFieldFinder)); expect(RendererBinding.instance.mouseTracker.debugDeviceActiveCursor(1), SystemMouseCursors.click); }); } 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; }