packages/flutter/test/material/navigation_bar_theme_test.dart - mirrors/flutter.git - Git at Google

 // 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.

 // This file is run as part of a reduced test set in CI on Mac and Windows
 // machines.
 @Tags(<String>['reduced-test-set'])
 library;

 import 'package:flutter/foundation.dart';
 import 'package:flutter/gestures.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';

 void main() {
   test('copyWith, ==, hashCode basics', () {
     expect(const NavigationBarThemeData(), const NavigationBarThemeData().copyWith());
     expect(
       const NavigationBarThemeData().hashCode,
       const NavigationBarThemeData().copyWith().hashCode,
     );
   });

   test('NavigationBarThemeData lerp special cases', () {
     expect(NavigationBarThemeData.lerp(null, null, 0), null);
     const NavigationBarThemeData data = NavigationBarThemeData();
     expect(identical(NavigationBarThemeData.lerp(data, data, 0.5), data), true);
   });

   testWidgets('Default debugFillProperties', (WidgetTester tester) async {
     final DiagnosticPropertiesBuilder builder = DiagnosticPropertiesBuilder();
     const NavigationBarThemeData().debugFillProperties(builder);

     final List<String> description =
         builder.properties
             .where((DiagnosticsNode node) => !node.isFiltered(DiagnosticLevel.info))
             .map((DiagnosticsNode node) => node.toString())
             .toList();

     expect(description, <String>[]);
   });

   testWidgets('NavigationBarThemeData implements debugFillProperties', (WidgetTester tester) async {
     final DiagnosticPropertiesBuilder builder = DiagnosticPropertiesBuilder();
     const NavigationBarThemeData(
       height: 200.0,
       backgroundColor: Color(0x00000099),
       elevation: 20.0,
       shadowColor: Color(0x00000098),
       surfaceTintColor: Color(0x00000097),
       indicatorColor: Color(0x00000096),
       indicatorShape: CircleBorder(),
       labelTextStyle: MaterialStatePropertyAll<TextStyle>(TextStyle(fontSize: 7.0)),
       iconTheme: MaterialStatePropertyAll<IconThemeData>(IconThemeData(color: Color(0x00000097))),
       labelBehavior: NavigationDestinationLabelBehavior.alwaysHide,
       overlayColor: MaterialStatePropertyAll<Color>(Color(0x00000095)),
       labelPadding: EdgeInsets.all(8),
     ).debugFillProperties(builder);

     final List<String> description =
         builder.properties
             .where((DiagnosticsNode node) => !node.isFiltered(DiagnosticLevel.info))
             .map((DiagnosticsNode node) => node.toString())
             .toList();

     expect(
       description,
       equalsIgnoringHashCodes(<String>[
         'height: 200.0',
         'backgroundColor: Color(alpha: 0.0000, red: 0.0000, green: 0.0000, blue: 0.6000, colorSpace: ColorSpace.sRGB)',
         'elevation: 20.0',
         'shadowColor: Color(alpha: 0.0000, red: 0.0000, green: 0.0000, blue: 0.5961, colorSpace: ColorSpace.sRGB)',
         'surfaceTintColor: Color(alpha: 0.0000, red: 0.0000, green: 0.0000, blue: 0.5922, colorSpace: ColorSpace.sRGB)',
         'indicatorColor: Color(alpha: 0.0000, red: 0.0000, green: 0.0000, blue: 0.5882, colorSpace: ColorSpace.sRGB)',
         'indicatorShape: CircleBorder(BorderSide(width: 0.0, style: none))',
         'labelTextStyle: WidgetStatePropertyAll(TextStyle(inherit: true, size: 7.0))',
         'iconTheme: WidgetStatePropertyAll(IconThemeData#fd5c3(color: Color(alpha: 0.0000, red: 0.0000, green: 0.0000, blue: 0.5922, colorSpace: ColorSpace.sRGB)))',
         'labelBehavior: NavigationDestinationLabelBehavior.alwaysHide',
         'overlayColor: WidgetStatePropertyAll(Color(alpha: 0.0000, red: 0.0000, green: 0.0000, blue: 0.5843, colorSpace: ColorSpace.sRGB))',
         'labelPadding: EdgeInsets.all(8.0)',
       ]),
     );
   });

   testWidgets(
     'NavigationBarThemeData values are used when no NavigationBar properties are specified',
     (WidgetTester tester) async {
       const double height = 200.0;
       const Color backgroundColor = Color(0x00000001);
       const double elevation = 42.0;
       const Color indicatorColor = Color(0x00000002);
       const ShapeBorder indicatorShape = CircleBorder();
       const double selectedIconSize = 25.0;
       const double unselectedIconSize = 23.0;
       const Color selectedIconColor = Color(0x00000003);
       const Color unselectedIconColor = Color(0x00000004);
       const double selectedIconOpacity = 0.99;
       const double unselectedIconOpacity = 0.98;
       const double selectedLabelFontSize = 13.0;
       const double unselectedLabelFontSize = 11.0;
       const NavigationDestinationLabelBehavior labelBehavior =
           NavigationDestinationLabelBehavior.alwaysShow;
       const EdgeInsetsGeometry labelPadding = EdgeInsets.all(8);

       await tester.pumpWidget(
         MaterialApp(
           home: Scaffold(
             bottomNavigationBar: NavigationBarTheme(
               data: NavigationBarThemeData(
                 height: height,
                 backgroundColor: backgroundColor,
                 elevation: elevation,
                 indicatorColor: indicatorColor,
                 indicatorShape: indicatorShape,
                 iconTheme: MaterialStateProperty.resolveWith((Set<MaterialState> states) {
                   if (states.contains(MaterialState.selected)) {
                     return const IconThemeData(
                       size: selectedIconSize,
                       color: selectedIconColor,
                       opacity: selectedIconOpacity,
                     );
                   }
                   return const IconThemeData(
                     size: unselectedIconSize,
                     color: unselectedIconColor,
                     opacity: unselectedIconOpacity,
                   );
                 }),
                 labelTextStyle: MaterialStateProperty.resolveWith((Set<MaterialState> states) {
                   if (states.contains(MaterialState.selected)) {
                     return const TextStyle(fontSize: selectedLabelFontSize);
                   }
                   return const TextStyle(fontSize: unselectedLabelFontSize);
                 }),
                 labelBehavior: labelBehavior,
                 labelPadding: labelPadding,
               ),
               child: NavigationBar(destinations: _destinations()),
             ),
           ),
         ),
       );

       expect(_barHeight(tester), height);
       expect(_barMaterial(tester).color, backgroundColor);
       expect(_barMaterial(tester).elevation, elevation);
       expect(_indicator(tester)?.color, indicatorColor);
       expect(_indicator(tester)?.shape, indicatorShape);
       expect(_selectedIconTheme(tester).size, selectedIconSize);
       expect(_selectedIconTheme(tester).color, selectedIconColor);
       expect(_selectedIconTheme(tester).opacity, selectedIconOpacity);
       expect(_unselectedIconTheme(tester).size, unselectedIconSize);
       expect(_unselectedIconTheme(tester).color, unselectedIconColor);
       expect(_unselectedIconTheme(tester).opacity, unselectedIconOpacity);
       expect(_selectedLabelStyle(tester).fontSize, selectedLabelFontSize);
       expect(_unselectedLabelStyle(tester).fontSize, unselectedLabelFontSize);
       expect(_labelBehavior(tester), labelBehavior);
       expect(_getLabelPadding(tester, 'Abc'), labelPadding);
       expect(_getLabelPadding(tester, 'Def'), labelPadding);
     },
   );

   testWidgets(
     'NavigationBar values take priority over NavigationBarThemeData values when both properties are specified',
     (WidgetTester tester) async {
       const double height = 200.0;
       const Color backgroundColor = Color(0x00000001);
       const double elevation = 42.0;
       const NavigationDestinationLabelBehavior labelBehavior =
           NavigationDestinationLabelBehavior.alwaysShow;
       const EdgeInsetsGeometry labelPadding = EdgeInsets.symmetric(horizontal: 16.0);

       await tester.pumpWidget(
         MaterialApp(
           home: Scaffold(
             bottomNavigationBar: NavigationBarTheme(
               data: const NavigationBarThemeData(
                 height: 100.0,
                 elevation: 18.0,
                 backgroundColor: Color(0x00000099),
                 labelBehavior: NavigationDestinationLabelBehavior.alwaysHide,
                 labelPadding: EdgeInsets.all(8),
               ),
               child: NavigationBar(
                 height: height,
                 elevation: elevation,
                 backgroundColor: backgroundColor,
                 labelBehavior: labelBehavior,
                 labelPadding: labelPadding,
                 destinations: _destinations(),
               ),
             ),
           ),
         ),
       );

       expect(_barHeight(tester), height);
       expect(_barMaterial(tester).color, backgroundColor);
       expect(_barMaterial(tester).elevation, elevation);
       expect(_labelBehavior(tester), labelBehavior);
       expect(_getLabelPadding(tester, 'Abc'), labelPadding);
       expect(_getLabelPadding(tester, 'Def'), labelPadding);
     },
   );

   testWidgets('Custom label style renders ink ripple properly', (WidgetTester tester) async {
     Widget buildWidget({NavigationDestinationLabelBehavior? labelBehavior}) {
       return MaterialApp(
         theme: ThemeData(
           navigationBarTheme: const NavigationBarThemeData(
             labelTextStyle: MaterialStatePropertyAll<TextStyle>(
               TextStyle(fontSize: 25, color: Color(0xff0000ff)),
             ),
           ),
           useMaterial3: true,
         ),
         home: Scaffold(
           bottomNavigationBar: Center(
             child: NavigationBar(
               labelBehavior: labelBehavior,
               destinations: const <Widget>[
                 NavigationDestination(icon: SizedBox(), label: 'AC'),
                 NavigationDestination(icon: SizedBox(), label: 'Alarm'),
               ],
               onDestinationSelected: (int i) {},
             ),
           ),
         ),
       );
     }

     await tester.pumpWidget(buildWidget());

     final TestGesture gesture = await tester.createGesture(kind: PointerDeviceKind.mouse);
     await gesture.addPointer();
     await gesture.moveTo(tester.getCenter(find.byType(NavigationDestination).last));
     await tester.pumpAndSettle();

     await expectLater(
       find.byType(NavigationBar),
       matchesGoldenFile('indicator_custom_label_style.png'),
     );
   });

   testWidgets(
     'NavigationBar respects NavigationBarTheme.overlayColor in active/pressed/hovered states',
     (WidgetTester tester) async {
       tester.binding.focusManager.highlightStrategy = FocusHighlightStrategy.alwaysTraditional;
       const Color hoverColor = Color(0xff0000ff);
       const Color focusColor = Color(0xff00ffff);
       const Color pressedColor = Color(0xffff00ff);
       final MaterialStateProperty<Color?> overlayColor = MaterialStateProperty.resolveWith<Color>((
         Set<MaterialState> states,
       ) {
         if (states.contains(MaterialState.hovered)) {
           return hoverColor;
         }
         if (states.contains(MaterialState.focused)) {
           return focusColor;
         }
         if (states.contains(MaterialState.pressed)) {
           return pressedColor;
         }
         return Colors.transparent;
       });

       await tester.pumpWidget(
         MaterialApp(
           theme: ThemeData(navigationBarTheme: NavigationBarThemeData(overlayColor: overlayColor)),
           home: Scaffold(
             bottomNavigationBar: RepaintBoundary(
               child: NavigationBar(
                 destinations: const <Widget>[
                   NavigationDestination(icon: Icon(Icons.ac_unit), label: 'AC'),
                   NavigationDestination(icon: Icon(Icons.access_alarm), label: 'Alarm'),
                 ],
                 onDestinationSelected: (int i) {},
               ),
             ),
           ),
         ),
       );

       final TestGesture gesture = await tester.createGesture(kind: PointerDeviceKind.mouse);
       await gesture.addPointer();
       await gesture.moveTo(tester.getCenter(find.byType(NavigationIndicator).last));
       await tester.pumpAndSettle();

       final RenderObject inkFeatures = tester.allRenderObjects.firstWhere(
         (RenderObject object) => object.runtimeType.toString() == '_RenderInkFeatures',
       );

       // Test hovered state.
       expect(
         inkFeatures,
         kIsWeb
             ? (paints
               ..rrect()
               ..rrect()
               ..circle(color: hoverColor))
             : (paints..circle(color: hoverColor)),
       );

       await gesture.down(tester.getCenter(find.byType(NavigationIndicator).last));
       await tester.pumpAndSettle();

       // Test pressed state.
       expect(
         inkFeatures,
         kIsWeb
             ? (paints
               ..circle()
               ..circle()
               ..circle(color: pressedColor))
             : (paints
               ..circle()
               ..circle(color: pressedColor)),
       );

       await gesture.up();
       await tester.pumpAndSettle();

       // Press tab to focus the navigation bar.
       await tester.sendKeyEvent(LogicalKeyboardKey.tab);
       await tester.pumpAndSettle();

       // Test focused state.
       expect(
         inkFeatures,
         kIsWeb
             ? (paints
               ..circle()
               ..circle(color: focusColor))
             : (paints
               ..circle()
               ..circle(color: focusColor)),
       );
     },
   );
 }

 List<NavigationDestination> _destinations() {
   return const <NavigationDestination>[
     NavigationDestination(
       icon: Icon(Icons.favorite_border),
       selectedIcon: Icon(Icons.favorite),
       label: 'Abc',
     ),
     NavigationDestination(
       icon: Icon(Icons.star_border),
       selectedIcon: Icon(Icons.star),
       label: 'Def',
     ),
   ];
 }

 double _barHeight(WidgetTester tester) {
   return tester.getRect(find.byType(NavigationBar)).height;
 }

 Material _barMaterial(WidgetTester tester) {
   return tester.firstWidget<Material>(
     find.descendant(of: find.byType(NavigationBar), matching: find.byType(Material)),
   );
 }

 ShapeDecoration? _indicator(WidgetTester tester) {
   return tester
           .firstWidget<Container>(
             find.descendant(of: find.byType(FadeTransition), matching: find.byType(Container)),
           )
           .decoration
       as ShapeDecoration?;
 }

 IconThemeData _selectedIconTheme(WidgetTester tester) {
   return _iconTheme(tester, Icons.favorite);
 }

 IconThemeData _unselectedIconTheme(WidgetTester tester) {
   return _iconTheme(tester, Icons.star_border);
 }

 IconThemeData _iconTheme(WidgetTester tester, IconData icon) {
   return tester
       .firstWidget<IconTheme>(
         find.ancestor(of: find.byIcon(icon), matching: find.byType(IconTheme)),
       )
       .data;
 }

 TextStyle _selectedLabelStyle(WidgetTester tester) {
   return tester
       .widget<RichText>(find.descendant(of: find.text('Abc'), matching: find.byType(RichText)))
       .text
       .style!;
 }

 TextStyle _unselectedLabelStyle(WidgetTester tester) {
   return tester
       .widget<RichText>(find.descendant(of: find.text('Def'), matching: find.byType(RichText)))
       .text
       .style!;
 }

 NavigationDestinationLabelBehavior _labelBehavior(WidgetTester tester) {
   if (_opacityAboveLabel('Abc').evaluate().isNotEmpty &&
       _opacityAboveLabel('Def').evaluate().isNotEmpty) {
     return _labelOpacity(tester, 'Abc') == 1
         ? NavigationDestinationLabelBehavior.onlyShowSelected
         : NavigationDestinationLabelBehavior.alwaysHide;
   } else {
     return NavigationDestinationLabelBehavior.alwaysShow;
   }
 }

 Finder _opacityAboveLabel(String text) {
   return find.ancestor(of: find.text(text), matching: find.byType(Opacity));
 }

 // Only valid when labelBehavior != alwaysShow.
 double _labelOpacity(WidgetTester tester, String text) {
   final Opacity opacityWidget = tester.widget<Opacity>(
     find.ancestor(of: find.text(text), matching: find.byType(Opacity)),
   );
   return opacityWidget.opacity;
 }

 EdgeInsetsGeometry _getLabelPadding(WidgetTester tester, String text) {
   return tester
       .widget<Padding>(find.ancestor(of: find.text(text), matching: find.byType(Padding)).first)
       .padding;
 }
	// 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.

	// This file is run as part of a reduced test set in CI on Mac and Windows
	// machines.
	@Tags(<String>['reduced-test-set'])
	library;

	import 'package:flutter/foundation.dart';
	import 'package:flutter/gestures.dart';
	import 'package:flutter/material.dart';
	import 'package:flutter/rendering.dart';
	import 'package:flutter/services.dart';
	import 'package:flutter_test/flutter_test.dart';

	void main() {
	test('copyWith, ==, hashCode basics', () {
	expect(const NavigationBarThemeData(), const NavigationBarThemeData().copyWith());
	expect(
	const NavigationBarThemeData().hashCode,
	const NavigationBarThemeData().copyWith().hashCode,
	);
	});

	test('NavigationBarThemeData lerp special cases', () {
	expect(NavigationBarThemeData.lerp(null, null, 0), null);
	const NavigationBarThemeData data = NavigationBarThemeData();
	expect(identical(NavigationBarThemeData.lerp(data, data, 0.5), data), true);
	});

	testWidgets('Default debugFillProperties', (WidgetTester tester) async {
	final DiagnosticPropertiesBuilder builder = DiagnosticPropertiesBuilder();
	const NavigationBarThemeData().debugFillProperties(builder);

	final List<String> description =
	builder.properties
	.where((DiagnosticsNode node) => !node.isFiltered(DiagnosticLevel.info))
	.map((DiagnosticsNode node) => node.toString())
	.toList();

	expect(description, <String>[]);
	});

	testWidgets('NavigationBarThemeData implements debugFillProperties', (WidgetTester tester) async {
	final DiagnosticPropertiesBuilder builder = DiagnosticPropertiesBuilder();
	const NavigationBarThemeData(
	height: 200.0,
	backgroundColor: Color(0x00000099),
	elevation: 20.0,
	shadowColor: Color(0x00000098),
	surfaceTintColor: Color(0x00000097),
	indicatorColor: Color(0x00000096),
	indicatorShape: CircleBorder(),
	labelTextStyle: MaterialStatePropertyAll<TextStyle>(TextStyle(fontSize: 7.0)),
	iconTheme: MaterialStatePropertyAll<IconThemeData>(IconThemeData(color: Color(0x00000097))),
	labelBehavior: NavigationDestinationLabelBehavior.alwaysHide,
	overlayColor: MaterialStatePropertyAll<Color>(Color(0x00000095)),
	labelPadding: EdgeInsets.all(8),
	).debugFillProperties(builder);

	final List<String> description =
	builder.properties
	.where((DiagnosticsNode node) => !node.isFiltered(DiagnosticLevel.info))
	.map((DiagnosticsNode node) => node.toString())
	.toList();

	expect(
	description,
	equalsIgnoringHashCodes(<String>[
	'height: 200.0',
	'backgroundColor: Color(alpha: 0.0000, red: 0.0000, green: 0.0000, blue: 0.6000, colorSpace: ColorSpace.sRGB)',
	'elevation: 20.0',
	'shadowColor: Color(alpha: 0.0000, red: 0.0000, green: 0.0000, blue: 0.5961, colorSpace: ColorSpace.sRGB)',
	'surfaceTintColor: Color(alpha: 0.0000, red: 0.0000, green: 0.0000, blue: 0.5922, colorSpace: ColorSpace.sRGB)',
	'indicatorColor: Color(alpha: 0.0000, red: 0.0000, green: 0.0000, blue: 0.5882, colorSpace: ColorSpace.sRGB)',
	'indicatorShape: CircleBorder(BorderSide(width: 0.0, style: none))',
	'labelTextStyle: WidgetStatePropertyAll(TextStyle(inherit: true, size: 7.0))',
	'iconTheme: WidgetStatePropertyAll(IconThemeData#fd5c3(color: Color(alpha: 0.0000, red: 0.0000, green: 0.0000, blue: 0.5922, colorSpace: ColorSpace.sRGB)))',
	'labelBehavior: NavigationDestinationLabelBehavior.alwaysHide',
	'overlayColor: WidgetStatePropertyAll(Color(alpha: 0.0000, red: 0.0000, green: 0.0000, blue: 0.5843, colorSpace: ColorSpace.sRGB))',
	'labelPadding: EdgeInsets.all(8.0)',
	]),
	);
	});

	testWidgets(
	'NavigationBarThemeData values are used when no NavigationBar properties are specified',
	(WidgetTester tester) async {
	const double height = 200.0;
	const Color backgroundColor = Color(0x00000001);
	const double elevation = 42.0;
	const Color indicatorColor = Color(0x00000002);
	const ShapeBorder indicatorShape = CircleBorder();
	const double selectedIconSize = 25.0;
	const double unselectedIconSize = 23.0;
	const Color selectedIconColor = Color(0x00000003);
	const Color unselectedIconColor = Color(0x00000004);
	const double selectedIconOpacity = 0.99;
	const double unselectedIconOpacity = 0.98;
	const double selectedLabelFontSize = 13.0;
	const double unselectedLabelFontSize = 11.0;
	const NavigationDestinationLabelBehavior labelBehavior =
	NavigationDestinationLabelBehavior.alwaysShow;
	const EdgeInsetsGeometry labelPadding = EdgeInsets.all(8);

	await tester.pumpWidget(
	MaterialApp(
	home: Scaffold(
	bottomNavigationBar: NavigationBarTheme(
	data: NavigationBarThemeData(
	height: height,
	backgroundColor: backgroundColor,
	elevation: elevation,
	indicatorColor: indicatorColor,
	indicatorShape: indicatorShape,
	iconTheme: MaterialStateProperty.resolveWith((Set<MaterialState> states) {
	if (states.contains(MaterialState.selected)) {
	return const IconThemeData(
	size: selectedIconSize,
	color: selectedIconColor,
	opacity: selectedIconOpacity,
	);
	}
	return const IconThemeData(
	size: unselectedIconSize,
	color: unselectedIconColor,
	opacity: unselectedIconOpacity,
	);
	}),
	labelTextStyle: MaterialStateProperty.resolveWith((Set<MaterialState> states) {
	if (states.contains(MaterialState.selected)) {
	return const TextStyle(fontSize: selectedLabelFontSize);
	}
	return const TextStyle(fontSize: unselectedLabelFontSize);
	}),
	labelBehavior: labelBehavior,
	labelPadding: labelPadding,
	),
	child: NavigationBar(destinations: _destinations()),
	),
	),
	),
	);

	expect(_barHeight(tester), height);
	expect(_barMaterial(tester).color, backgroundColor);
	expect(_barMaterial(tester).elevation, elevation);
	expect(_indicator(tester)?.color, indicatorColor);
	expect(_indicator(tester)?.shape, indicatorShape);
	expect(_selectedIconTheme(tester).size, selectedIconSize);
	expect(_selectedIconTheme(tester).color, selectedIconColor);
	expect(_selectedIconTheme(tester).opacity, selectedIconOpacity);
	expect(_unselectedIconTheme(tester).size, unselectedIconSize);
	expect(_unselectedIconTheme(tester).color, unselectedIconColor);
	expect(_unselectedIconTheme(tester).opacity, unselectedIconOpacity);
	expect(_selectedLabelStyle(tester).fontSize, selectedLabelFontSize);
	expect(_unselectedLabelStyle(tester).fontSize, unselectedLabelFontSize);
	expect(_labelBehavior(tester), labelBehavior);
	expect(_getLabelPadding(tester, 'Abc'), labelPadding);
	expect(_getLabelPadding(tester, 'Def'), labelPadding);
	},
	);

	testWidgets(
	'NavigationBar values take priority over NavigationBarThemeData values when both properties are specified',
	(WidgetTester tester) async {
	const double height = 200.0;
	const Color backgroundColor = Color(0x00000001);
	const double elevation = 42.0;
	const NavigationDestinationLabelBehavior labelBehavior =
	NavigationDestinationLabelBehavior.alwaysShow;
	const EdgeInsetsGeometry labelPadding = EdgeInsets.symmetric(horizontal: 16.0);

	await tester.pumpWidget(
	MaterialApp(
	home: Scaffold(
	bottomNavigationBar: NavigationBarTheme(
	data: const NavigationBarThemeData(
	height: 100.0,
	elevation: 18.0,
	backgroundColor: Color(0x00000099),
	labelBehavior: NavigationDestinationLabelBehavior.alwaysHide,
	labelPadding: EdgeInsets.all(8),
	),
	child: NavigationBar(
	height: height,
	elevation: elevation,
	backgroundColor: backgroundColor,
	labelBehavior: labelBehavior,
	labelPadding: labelPadding,
	destinations: _destinations(),
	),
	),
	),
	),
	);

	expect(_barHeight(tester), height);
	expect(_barMaterial(tester).color, backgroundColor);
	expect(_barMaterial(tester).elevation, elevation);
	expect(_labelBehavior(tester), labelBehavior);
	expect(_getLabelPadding(tester, 'Abc'), labelPadding);
	expect(_getLabelPadding(tester, 'Def'), labelPadding);
	},
	);

	testWidgets('Custom label style renders ink ripple properly', (WidgetTester tester) async {
	Widget buildWidget({NavigationDestinationLabelBehavior? labelBehavior}) {
	return MaterialApp(
	theme: ThemeData(
	navigationBarTheme: const NavigationBarThemeData(
	labelTextStyle: MaterialStatePropertyAll<TextStyle>(
	TextStyle(fontSize: 25, color: Color(0xff0000ff)),
	),
	),
	useMaterial3: true,
	),
	home: Scaffold(
	bottomNavigationBar: Center(
	child: NavigationBar(
	labelBehavior: labelBehavior,
	destinations: const <Widget>[
	NavigationDestination(icon: SizedBox(), label: 'AC'),
	NavigationDestination(icon: SizedBox(), label: 'Alarm'),
	],
	onDestinationSelected: (int i) {},
	),
	),
	),
	);
	}

	await tester.pumpWidget(buildWidget());

	final TestGesture gesture = await tester.createGesture(kind: PointerDeviceKind.mouse);
	await gesture.addPointer();
	await gesture.moveTo(tester.getCenter(find.byType(NavigationDestination).last));
	await tester.pumpAndSettle();

	await expectLater(
	find.byType(NavigationBar),
	matchesGoldenFile('indicator_custom_label_style.png'),
	);
	});

	testWidgets(
	'NavigationBar respects NavigationBarTheme.overlayColor in active/pressed/hovered states',
	(WidgetTester tester) async {
	tester.binding.focusManager.highlightStrategy = FocusHighlightStrategy.alwaysTraditional;
	const Color hoverColor = Color(0xff0000ff);
	const Color focusColor = Color(0xff00ffff);
	const Color pressedColor = Color(0xffff00ff);
	final MaterialStateProperty<Color?> overlayColor = MaterialStateProperty.resolveWith<Color>((
	Set<MaterialState> states,
	) {
	if (states.contains(MaterialState.hovered)) {
	return hoverColor;
	}
	if (states.contains(MaterialState.focused)) {
	return focusColor;
	}
	if (states.contains(MaterialState.pressed)) {
	return pressedColor;
	}
	return Colors.transparent;
	});

	await tester.pumpWidget(
	MaterialApp(
	theme: ThemeData(navigationBarTheme: NavigationBarThemeData(overlayColor: overlayColor)),
	home: Scaffold(
	bottomNavigationBar: RepaintBoundary(
	child: NavigationBar(
	destinations: const <Widget>[
	NavigationDestination(icon: Icon(Icons.ac_unit), label: 'AC'),
	NavigationDestination(icon: Icon(Icons.access_alarm), label: 'Alarm'),
	],
	onDestinationSelected: (int i) {},
	),
	),
	),
	),
	);

	final TestGesture gesture = await tester.createGesture(kind: PointerDeviceKind.mouse);
	await gesture.addPointer();
	await gesture.moveTo(tester.getCenter(find.byType(NavigationIndicator).last));
	await tester.pumpAndSettle();

	final RenderObject inkFeatures = tester.allRenderObjects.firstWhere(
	(RenderObject object) => object.runtimeType.toString() == '_RenderInkFeatures',
	);

	// Test hovered state.
	expect(
	inkFeatures,
	kIsWeb
	? (paints
	..rrect()
	..rrect()
	..circle(color: hoverColor))
	: (paints..circle(color: hoverColor)),
	);

	await gesture.down(tester.getCenter(find.byType(NavigationIndicator).last));
	await tester.pumpAndSettle();

	// Test pressed state.
	expect(
	inkFeatures,
	kIsWeb
	? (paints
	..circle()
	..circle()
	..circle(color: pressedColor))
	: (paints
	..circle()
	..circle(color: pressedColor)),
	);

	await gesture.up();
	await tester.pumpAndSettle();

	// Press tab to focus the navigation bar.
	await tester.sendKeyEvent(LogicalKeyboardKey.tab);
	await tester.pumpAndSettle();

	// Test focused state.
	expect(
	inkFeatures,
	kIsWeb
	? (paints
	..circle()
	..circle(color: focusColor))
	: (paints
	..circle()
	..circle(color: focusColor)),
	);
	},
	);
	}

	List<NavigationDestination> _destinations() {
	return const <NavigationDestination>[
	NavigationDestination(
	icon: Icon(Icons.favorite_border),
	selectedIcon: Icon(Icons.favorite),
	label: 'Abc',
	),
	NavigationDestination(
	icon: Icon(Icons.star_border),
	selectedIcon: Icon(Icons.star),
	label: 'Def',
	),
	];
	}

	double _barHeight(WidgetTester tester) {
	return tester.getRect(find.byType(NavigationBar)).height;
	}

	Material _barMaterial(WidgetTester tester) {
	return tester.firstWidget<Material>(
	find.descendant(of: find.byType(NavigationBar), matching: find.byType(Material)),
	);
	}

	ShapeDecoration? _indicator(WidgetTester tester) {
	return tester
	.firstWidget<Container>(
	find.descendant(of: find.byType(FadeTransition), matching: find.byType(Container)),
	)
	.decoration
	as ShapeDecoration?;
	}

	IconThemeData _selectedIconTheme(WidgetTester tester) {
	return _iconTheme(tester, Icons.favorite);
	}

	IconThemeData _unselectedIconTheme(WidgetTester tester) {
	return _iconTheme(tester, Icons.star_border);
	}

	IconThemeData _iconTheme(WidgetTester tester, IconData icon) {
	return tester
	.firstWidget<IconTheme>(
	find.ancestor(of: find.byIcon(icon), matching: find.byType(IconTheme)),
	)
	.data;
	}

	TextStyle _selectedLabelStyle(WidgetTester tester) {
	return tester
	.widget<RichText>(find.descendant(of: find.text('Abc'), matching: find.byType(RichText)))
	.text
	.style!;
	}

	TextStyle _unselectedLabelStyle(WidgetTester tester) {
	return tester
	.widget<RichText>(find.descendant(of: find.text('Def'), matching: find.byType(RichText)))
	.text
	.style!;
	}

	NavigationDestinationLabelBehavior _labelBehavior(WidgetTester tester) {
	if (_opacityAboveLabel('Abc').evaluate().isNotEmpty &&
	_opacityAboveLabel('Def').evaluate().isNotEmpty) {
	return _labelOpacity(tester, 'Abc') == 1
	? NavigationDestinationLabelBehavior.onlyShowSelected
	: NavigationDestinationLabelBehavior.alwaysHide;
	} else {
	return NavigationDestinationLabelBehavior.alwaysShow;
	}
	}

	Finder _opacityAboveLabel(String text) {
	return find.ancestor(of: find.text(text), matching: find.byType(Opacity));
	}

	// Only valid when labelBehavior != alwaysShow.
	double _labelOpacity(WidgetTester tester, String text) {
	final Opacity opacityWidget = tester.widget<Opacity>(
	find.ancestor(of: find.text(text), matching: find.byType(Opacity)),
	);
	return opacityWidget.opacity;
	}

	EdgeInsetsGeometry _getLabelPadding(WidgetTester tester, String text) {
	return tester
	.widget<Padding>(find.ancestor(of: find.text(text), matching: find.byType(Padding)).first)
	.padding;
	}