packages/flutter/test/material/expansion_tile_theme_test.dart - mirrors/flutter - 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/material.dart';
 import 'package:flutter/rendering.dart';
 import 'package:flutter_test/flutter_test.dart';

 class TestIcon extends StatefulWidget {
   const TestIcon({super.key});

   @override
   TestIconState createState() => TestIconState();
 }

 class TestIconState extends State<TestIcon> {
   late IconThemeData iconTheme;

   @override
   Widget build(BuildContext context) {
     iconTheme = IconTheme.of(context);
     return const Icon(Icons.expand_more);
   }
 }
 class TestText extends StatefulWidget {
   const TestText(this.text, {super.key});

   final String text;

   @override
   TestTextState createState() => TestTextState();
 }

 class TestTextState extends State<TestText> {
   late TextStyle textStyle;

   @override
   Widget build(BuildContext context) {
     textStyle = DefaultTextStyle.of(context).style;
     return Text(widget.text);
   }
 }

 void main() {
   Material getMaterial(WidgetTester tester) {
     return tester.widget<Material>(find.descendant(
       of: find.byType(ExpansionTile),
       matching: find.byType(Material),
     ));
   }

   test('ExpansionTileThemeData copyWith, ==, hashCode basics', () {
     expect(const ExpansionTileThemeData(), const ExpansionTileThemeData().copyWith());
     expect(const ExpansionTileThemeData().hashCode, const ExpansionTileThemeData().copyWith().hashCode);
   });

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

   test('ExpansionTileThemeData defaults', () {
     const ExpansionTileThemeData theme = ExpansionTileThemeData();
     expect(theme.backgroundColor, null);
     expect(theme.collapsedBackgroundColor, null);
     expect(theme.tilePadding, null);
     expect(theme.expandedAlignment, null);
     expect(theme.childrenPadding, null);
     expect(theme.iconColor, null);
     expect(theme.collapsedIconColor, null);
     expect(theme.textColor, null);
     expect(theme.collapsedTextColor, null);
     expect(theme.shape, null);
     expect(theme.collapsedShape, null);
     expect(theme.clipBehavior, null);
     expect(theme.expansionAnimationStyle, null);
   });

   testWidgets('Default ExpansionTileThemeData debugFillProperties', (WidgetTester tester) async {
     final DiagnosticPropertiesBuilder builder = DiagnosticPropertiesBuilder();
     const TooltipThemeData().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('ExpansionTileThemeData implements debugFillProperties', (WidgetTester tester) async {
     final DiagnosticPropertiesBuilder builder = DiagnosticPropertiesBuilder();
     ExpansionTileThemeData(
       backgroundColor: const Color(0xff000000),
       collapsedBackgroundColor: const Color(0xff6f83fc),
       tilePadding: const EdgeInsets.all(20.0),
       expandedAlignment: Alignment.bottomCenter,
       childrenPadding: const EdgeInsets.all(10.0),
       iconColor: const Color(0xffa7c61c),
       collapsedIconColor: const Color(0xffdd0b1f),
       textColor: const Color(0xffffffff),
       collapsedTextColor: const Color(0xff522bab),
       shape: const Border(),
       collapsedShape: const Border(),
       clipBehavior: Clip.antiAlias,
       expansionAnimationStyle: AnimationStyle(curve: Curves.easeInOut),
     ).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>[
       'backgroundColor: Color(0xff000000)',
       'collapsedBackgroundColor: Color(0xff6f83fc)',
       'tilePadding: EdgeInsets.all(20.0)',
       'expandedAlignment: Alignment.bottomCenter',
       'childrenPadding: EdgeInsets.all(10.0)',
       'iconColor: Color(0xffa7c61c)',
       'collapsedIconColor: Color(0xffdd0b1f)',
       'textColor: Color(0xffffffff)',
       'collapsedTextColor: Color(0xff522bab)',
       'shape: Border.all(BorderSide(width: 0.0, style: none))',
       'collapsedShape: Border.all(BorderSide(width: 0.0, style: none))',
       'clipBehavior: Clip.antiAlias',
       'expansionAnimationStyle: AnimationStyle#983ac(curve: Cubic(0.42, 0.00, 0.58, 1.00))',
     ]));
   });

   testWidgets('ExpansionTileTheme - collapsed', (WidgetTester tester) async {
     final Key tileKey = UniqueKey();
     final Key titleKey = UniqueKey();
     final Key iconKey = UniqueKey();
     const Color backgroundColor = Colors.orange;
     const Color collapsedBackgroundColor = Colors.red;
     const Color iconColor = Colors.green;
     const Color collapsedIconColor = Colors.blue;
     const Color textColor = Colors.black;
     const Color collapsedTextColor = Colors.white;
     const ShapeBorder shape = Border(
       top: BorderSide(color: Colors.red),
       bottom: BorderSide(color: Colors.red),
     );
     const ShapeBorder collapsedShape = Border(
       top: BorderSide(color: Colors.green),
       bottom: BorderSide(color: Colors.green),
     );
     const Clip clipBehavior = Clip.antiAlias;

     await tester.pumpWidget(
       MaterialApp(
         theme: ThemeData(
           expansionTileTheme: const ExpansionTileThemeData(
             backgroundColor: backgroundColor,
             collapsedBackgroundColor: collapsedBackgroundColor,
             tilePadding: EdgeInsets.fromLTRB(8, 12, 4, 10),
             expandedAlignment: Alignment.centerRight,
             childrenPadding: EdgeInsets.all(20.0),
             iconColor: iconColor,
             collapsedIconColor: collapsedIconColor,
             textColor: textColor,
             collapsedTextColor: collapsedTextColor,
             shape: shape,
             collapsedShape: collapsedShape,
             clipBehavior: clipBehavior,
           ),
         ),
         home: Material(
           child: Center(
             child: ExpansionTile(
               key: tileKey,
               title: TestText('Collapsed Tile', key: titleKey),
               trailing: TestIcon(key: iconKey),
               children: const <Widget>[Text('Tile 1')],
             ),
           ),
         ),
       ),
     );

     // When a custom shape is provided, ExpansionTile will use the
     // Material widget to draw the shape and background color
     // instead of a Container.
     final Material material = getMaterial(tester);

     // ExpansionTile should have Clip.antiAlias as clipBehavior.
     expect(material.clipBehavior, clipBehavior);

     // Check the tile's collapsed background color when collapsedBackgroundColor is applied.
     expect(material.color, collapsedBackgroundColor);

     final Rect titleRect = tester.getRect(find.text('Collapsed Tile'));
     final Rect trailingRect = tester.getRect(find.byIcon(Icons.expand_more));
     final Rect listTileRect = tester.getRect(find.byType(ListTile));
     final Rect tallerWidget = titleRect.height > trailingRect.height ? titleRect : trailingRect;

     // Check the positions of title and trailing Widgets, after padding is applied.
     expect(listTileRect.left, titleRect.left - 8);
     expect(listTileRect.right, trailingRect.right + 4);

     // Calculate the remaining height of ListTile from the default height.
     final double remainingHeight = 56 - tallerWidget.height;
     expect(listTileRect.top, tallerWidget.top - remainingHeight / 2 - 12);
     expect(listTileRect.bottom, tallerWidget.bottom + remainingHeight / 2 + 10);

     Color getIconColor() => tester.state<TestIconState>(find.byType(TestIcon)).iconTheme.color!;
     Color getTextColor() => tester.state<TestTextState>(find.byType(TestText)).textStyle.color!;

     // Check the collapsed icon color when iconColor is applied.
     expect(getIconColor(), collapsedIconColor);
     // Check the collapsed text color when textColor is applied.
     expect(getTextColor(), collapsedTextColor);
     // Check the collapsed ShapeBorder when shape is applied.
     expect(material.shape, collapsedShape);
   });

   testWidgets('ExpansionTileTheme - expanded', (WidgetTester tester) async {
     final Key tileKey = UniqueKey();
     final Key titleKey = UniqueKey();
     final Key iconKey = UniqueKey();
     const Color backgroundColor = Colors.orange;
     const Color collapsedBackgroundColor = Colors.red;
     const Color iconColor = Colors.green;
     const Color collapsedIconColor = Colors.blue;
     const Color textColor = Colors.black;
     const Color collapsedTextColor = Colors.white;
     const ShapeBorder shape = Border(
       top: BorderSide(color: Colors.red),
       bottom: BorderSide(color: Colors.red),
     );
     const ShapeBorder collapsedShape = Border(
       top: BorderSide(color: Colors.green),
       bottom: BorderSide(color: Colors.green),
     );
     const Clip clipBehavior = Clip.none;

     await tester.pumpWidget(
       MaterialApp(
         theme: ThemeData(
           expansionTileTheme: const ExpansionTileThemeData(
             backgroundColor: backgroundColor,
             collapsedBackgroundColor: collapsedBackgroundColor,
             tilePadding: EdgeInsets.fromLTRB(8, 12, 4, 10),
             expandedAlignment: Alignment.centerRight,
             childrenPadding: EdgeInsets.all(20.0),
             iconColor: iconColor,
             collapsedIconColor: collapsedIconColor,
             textColor: textColor,
             collapsedTextColor: collapsedTextColor,
             shape: shape,
             collapsedShape: collapsedShape,
             clipBehavior: clipBehavior,
           ),
         ),
         home: Material(
           child: Center(
             child: ExpansionTile(
               key: tileKey,
               initiallyExpanded: true,
               title: TestText('Expanded Tile', key: titleKey),
               trailing: TestIcon(key: iconKey),
               children: const <Widget>[Text('Tile 1')],
             ),
           ),
         ),
       ),
     );

     // When a custom shape is provided, ExpansionTile will use the
     // Material widget to draw the shape and background color
     // instead of a Container.
     final Material material = getMaterial(tester);
     // Check the tile's background color when backgroundColor is applied.
     expect(material.color, backgroundColor);

     final Rect titleRect = tester.getRect(find.text('Expanded Tile'));
     final Rect trailingRect = tester.getRect(find.byIcon(Icons.expand_more));
     final Rect listTileRect = tester.getRect(find.byType(ListTile));
     final Rect tallerWidget = titleRect.height > trailingRect.height ? titleRect : trailingRect;

     // Check the positions of title and trailing Widgets, after padding is applied.
     expect(listTileRect.left, titleRect.left - 8);
     expect(listTileRect.right, trailingRect.right + 4);

     // Calculate the remaining height of ListTile from the default height.
     final double remainingHeight = 56 - tallerWidget.height;
     expect(listTileRect.top, tallerWidget.top - remainingHeight / 2 - 12);
     expect(listTileRect.bottom, tallerWidget.bottom + remainingHeight / 2 + 10);

     Color getIconColor() => tester.state<TestIconState>(find.byType(TestIcon)).iconTheme.color!;
     Color getTextColor() => tester.state<TestTextState>(find.byType(TestText)).textStyle.color!;

     // Check the expanded icon color when iconColor is applied.
     expect(getIconColor(), iconColor);
     // Check the expanded text color when textColor is applied.
     expect(getTextColor(), textColor);
     // Check the expanded ShapeBorder when shape is applied.
     expect(material.shape, shape);
     // Check the clipBehavior when shape is applied.
     expect(material.clipBehavior, clipBehavior);

     // Check the child position when expandedAlignment is applied.
     final Rect childRect = tester.getRect(find.text('Tile 1'));
     expect(childRect.right, 800 - 20);
     expect(childRect.left, 800 - childRect.width - 20);

     // Check the child padding when childrenPadding is applied.
     final Rect paddingRect = tester.getRect(find.byType(Padding).last);
     expect(childRect.top, paddingRect.top + 20);
     expect(childRect.left, paddingRect.left + 20);
     expect(childRect.right, paddingRect.right - 20);
     expect(childRect.bottom, paddingRect.bottom - 20);
   });

   testWidgets('Override ExpansionTile animation using ExpansionTileThemeData.AnimationStyle', (WidgetTester tester) async {
     const Key expansionTileKey = Key('expansionTileKey');

     Widget buildExpansionTile({ AnimationStyle? animationStyle }) {
       return MaterialApp(
         theme: ThemeData(
           expansionTileTheme: ExpansionTileThemeData(
             expansionAnimationStyle: animationStyle,
           ),
         ),
         home: const Material(
           child: Center(
             child: ExpansionTile(
               key: expansionTileKey,
               title: TestText('title'),
               children: <Widget>[
                 SizedBox(height: 100, width: 100),
               ],
             ),
           ),
         ),
       );
     }

     await tester.pumpWidget(buildExpansionTile());

     double getHeight(Key key) => tester.getSize(find.byKey(key)).height;

     // Test initial ExpansionTile height.
     expect(getHeight(expansionTileKey), 58.0);

     // Test the default expansion animation.
     await tester.tap(find.text('title'));
     await tester.pump();
     await tester.pump(const Duration(milliseconds: 50)); // Advance the animation by 1/4 of its duration.

     expect(getHeight(expansionTileKey), closeTo(67.4, 0.1));

     await tester.pump(const Duration(milliseconds: 50)); // Advance the animation by 2/4 of its duration.

     expect(getHeight(expansionTileKey), closeTo(89.6, 0.1));

     await tester.pumpAndSettle(); // Advance the animation to the end.

     expect(getHeight(expansionTileKey), 158.0);

     // Tap to collapse the ExpansionTile.
     await tester.tap(find.text('title'));
     await tester.pumpAndSettle();

     // Override the animation duration.
     await tester.pumpWidget(buildExpansionTile(animationStyle: AnimationStyle(duration: const Duration(milliseconds: 800))));
     await tester.pumpAndSettle();

     // Test the overridden animation duration.
     await tester.tap(find.text('title'));
     await tester.pump();
     await tester.pump(const Duration(milliseconds: 200)); // Advance the animation by 1/4 of its duration.

     expect(getHeight(expansionTileKey), closeTo(67.4, 0.1));

     await tester.pump(const Duration(milliseconds: 200)); // Advance the animation by 2/4 of its duration.

     expect(getHeight(expansionTileKey), closeTo(89.6, 0.1));

     await tester.pumpAndSettle(); // Advance the animation to the end.

     expect(getHeight(expansionTileKey), 158.0);

     // Tap to collapse the ExpansionTile.
     await tester.tap(find.text('title'));
     await tester.pumpAndSettle();

     // Override the animation curve.
     await tester.pumpWidget(buildExpansionTile(animationStyle: AnimationStyle(curve: Easing.emphasizedDecelerate)));
     await tester.pumpAndSettle();

     // Test the overridden animation curve.
     await tester.tap(find.text('title'));
     await tester.pump();
     await tester.pump(const Duration(milliseconds: 50)); // Advance the animation by 1/4 of its duration.

     expect(getHeight(expansionTileKey), closeTo(141.2, 0.1));

     await tester.pump(const Duration(milliseconds: 50)); // Advance the animation by 2/4 of its duration.

     expect(getHeight(expansionTileKey), closeTo(153, 0.1));

     await tester.pumpAndSettle(); // Advance the animation to the end.

     expect(getHeight(expansionTileKey), 158.0);

     // Tap to collapse the ExpansionTile.
     await tester.tap(find.text('title'));

     // Test no animation.
     await tester.pumpWidget(buildExpansionTile(animationStyle: AnimationStyle.noAnimation));

     // Tap to expand the ExpansionTile.
     await tester.tap(find.text('title'));
     await tester.pump();

     expect(getHeight(expansionTileKey), 158.0);
   });
 }
	// 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/material.dart';
	import 'package:flutter/rendering.dart';
	import 'package:flutter_test/flutter_test.dart';

	class TestIcon extends StatefulWidget {
	const TestIcon({super.key});

	@override
	TestIconState createState() => TestIconState();
	}

	class TestIconState extends State<TestIcon> {
	late IconThemeData iconTheme;

	@override
	Widget build(BuildContext context) {
	iconTheme = IconTheme.of(context);
	return const Icon(Icons.expand_more);
	}
	}
	class TestText extends StatefulWidget {
	const TestText(this.text, {super.key});

	final String text;

	@override
	TestTextState createState() => TestTextState();
	}

	class TestTextState extends State<TestText> {
	late TextStyle textStyle;

	@override
	Widget build(BuildContext context) {
	textStyle = DefaultTextStyle.of(context).style;
	return Text(widget.text);
	}
	}

	void main() {
	Material getMaterial(WidgetTester tester) {
	return tester.widget<Material>(find.descendant(
	of: find.byType(ExpansionTile),
	matching: find.byType(Material),
	));
	}

	test('ExpansionTileThemeData copyWith, ==, hashCode basics', () {
	expect(const ExpansionTileThemeData(), const ExpansionTileThemeData().copyWith());
	expect(const ExpansionTileThemeData().hashCode, const ExpansionTileThemeData().copyWith().hashCode);
	});

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

	test('ExpansionTileThemeData defaults', () {
	const ExpansionTileThemeData theme = ExpansionTileThemeData();
	expect(theme.backgroundColor, null);
	expect(theme.collapsedBackgroundColor, null);
	expect(theme.tilePadding, null);
	expect(theme.expandedAlignment, null);
	expect(theme.childrenPadding, null);
	expect(theme.iconColor, null);
	expect(theme.collapsedIconColor, null);
	expect(theme.textColor, null);
	expect(theme.collapsedTextColor, null);
	expect(theme.shape, null);
	expect(theme.collapsedShape, null);
	expect(theme.clipBehavior, null);
	expect(theme.expansionAnimationStyle, null);
	});

	testWidgets('Default ExpansionTileThemeData debugFillProperties', (WidgetTester tester) async {
	final DiagnosticPropertiesBuilder builder = DiagnosticPropertiesBuilder();
	const TooltipThemeData().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('ExpansionTileThemeData implements debugFillProperties', (WidgetTester tester) async {
	final DiagnosticPropertiesBuilder builder = DiagnosticPropertiesBuilder();
	ExpansionTileThemeData(
	backgroundColor: const Color(0xff000000),
	collapsedBackgroundColor: const Color(0xff6f83fc),
	tilePadding: const EdgeInsets.all(20.0),
	expandedAlignment: Alignment.bottomCenter,
	childrenPadding: const EdgeInsets.all(10.0),
	iconColor: const Color(0xffa7c61c),
	collapsedIconColor: const Color(0xffdd0b1f),
	textColor: const Color(0xffffffff),
	collapsedTextColor: const Color(0xff522bab),
	shape: const Border(),
	collapsedShape: const Border(),
	clipBehavior: Clip.antiAlias,
	expansionAnimationStyle: AnimationStyle(curve: Curves.easeInOut),
	).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>[
	'backgroundColor: Color(0xff000000)',
	'collapsedBackgroundColor: Color(0xff6f83fc)',
	'tilePadding: EdgeInsets.all(20.0)',
	'expandedAlignment: Alignment.bottomCenter',
	'childrenPadding: EdgeInsets.all(10.0)',
	'iconColor: Color(0xffa7c61c)',
	'collapsedIconColor: Color(0xffdd0b1f)',
	'textColor: Color(0xffffffff)',
	'collapsedTextColor: Color(0xff522bab)',
	'shape: Border.all(BorderSide(width: 0.0, style: none))',
	'collapsedShape: Border.all(BorderSide(width: 0.0, style: none))',
	'clipBehavior: Clip.antiAlias',
	'expansionAnimationStyle: AnimationStyle#983ac(curve: Cubic(0.42, 0.00, 0.58, 1.00))',
	]));
	});

	testWidgets('ExpansionTileTheme - collapsed', (WidgetTester tester) async {
	final Key tileKey = UniqueKey();
	final Key titleKey = UniqueKey();
	final Key iconKey = UniqueKey();
	const Color backgroundColor = Colors.orange;
	const Color collapsedBackgroundColor = Colors.red;
	const Color iconColor = Colors.green;
	const Color collapsedIconColor = Colors.blue;
	const Color textColor = Colors.black;
	const Color collapsedTextColor = Colors.white;
	const ShapeBorder shape = Border(
	top: BorderSide(color: Colors.red),
	bottom: BorderSide(color: Colors.red),
	);
	const ShapeBorder collapsedShape = Border(
	top: BorderSide(color: Colors.green),
	bottom: BorderSide(color: Colors.green),
	);
	const Clip clipBehavior = Clip.antiAlias;

	await tester.pumpWidget(
	MaterialApp(
	theme: ThemeData(
	expansionTileTheme: const ExpansionTileThemeData(
	backgroundColor: backgroundColor,
	collapsedBackgroundColor: collapsedBackgroundColor,
	tilePadding: EdgeInsets.fromLTRB(8, 12, 4, 10),
	expandedAlignment: Alignment.centerRight,
	childrenPadding: EdgeInsets.all(20.0),
	iconColor: iconColor,
	collapsedIconColor: collapsedIconColor,
	textColor: textColor,
	collapsedTextColor: collapsedTextColor,
	shape: shape,
	collapsedShape: collapsedShape,
	clipBehavior: clipBehavior,
	),
	),
	home: Material(
	child: Center(
	child: ExpansionTile(
	key: tileKey,
	title: TestText('Collapsed Tile', key: titleKey),
	trailing: TestIcon(key: iconKey),
	children: const <Widget>[Text('Tile 1')],
	),
	),
	),
	),
	);

	// When a custom shape is provided, ExpansionTile will use the
	// Material widget to draw the shape and background color
	// instead of a Container.
	final Material material = getMaterial(tester);

	// ExpansionTile should have Clip.antiAlias as clipBehavior.
	expect(material.clipBehavior, clipBehavior);

	// Check the tile's collapsed background color when collapsedBackgroundColor is applied.
	expect(material.color, collapsedBackgroundColor);

	final Rect titleRect = tester.getRect(find.text('Collapsed Tile'));
	final Rect trailingRect = tester.getRect(find.byIcon(Icons.expand_more));
	final Rect listTileRect = tester.getRect(find.byType(ListTile));
	final Rect tallerWidget = titleRect.height > trailingRect.height ? titleRect : trailingRect;

	// Check the positions of title and trailing Widgets, after padding is applied.
	expect(listTileRect.left, titleRect.left - 8);
	expect(listTileRect.right, trailingRect.right + 4);

	// Calculate the remaining height of ListTile from the default height.
	final double remainingHeight = 56 - tallerWidget.height;
	expect(listTileRect.top, tallerWidget.top - remainingHeight / 2 - 12);
	expect(listTileRect.bottom, tallerWidget.bottom + remainingHeight / 2 + 10);

	Color getIconColor() => tester.state<TestIconState>(find.byType(TestIcon)).iconTheme.color!;
	Color getTextColor() => tester.state<TestTextState>(find.byType(TestText)).textStyle.color!;

	// Check the collapsed icon color when iconColor is applied.
	expect(getIconColor(), collapsedIconColor);
	// Check the collapsed text color when textColor is applied.
	expect(getTextColor(), collapsedTextColor);
	// Check the collapsed ShapeBorder when shape is applied.
	expect(material.shape, collapsedShape);
	});

	testWidgets('ExpansionTileTheme - expanded', (WidgetTester tester) async {
	final Key tileKey = UniqueKey();
	final Key titleKey = UniqueKey();
	final Key iconKey = UniqueKey();
	const Color backgroundColor = Colors.orange;
	const Color collapsedBackgroundColor = Colors.red;
	const Color iconColor = Colors.green;
	const Color collapsedIconColor = Colors.blue;
	const Color textColor = Colors.black;
	const Color collapsedTextColor = Colors.white;
	const ShapeBorder shape = Border(
	top: BorderSide(color: Colors.red),
	bottom: BorderSide(color: Colors.red),
	);
	const ShapeBorder collapsedShape = Border(
	top: BorderSide(color: Colors.green),
	bottom: BorderSide(color: Colors.green),
	);
	const Clip clipBehavior = Clip.none;

	await tester.pumpWidget(
	MaterialApp(
	theme: ThemeData(
	expansionTileTheme: const ExpansionTileThemeData(
	backgroundColor: backgroundColor,
	collapsedBackgroundColor: collapsedBackgroundColor,
	tilePadding: EdgeInsets.fromLTRB(8, 12, 4, 10),
	expandedAlignment: Alignment.centerRight,
	childrenPadding: EdgeInsets.all(20.0),
	iconColor: iconColor,
	collapsedIconColor: collapsedIconColor,
	textColor: textColor,
	collapsedTextColor: collapsedTextColor,
	shape: shape,
	collapsedShape: collapsedShape,
	clipBehavior: clipBehavior,
	),
	),
	home: Material(
	child: Center(
	child: ExpansionTile(
	key: tileKey,
	initiallyExpanded: true,
	title: TestText('Expanded Tile', key: titleKey),
	trailing: TestIcon(key: iconKey),
	children: const <Widget>[Text('Tile 1')],
	),
	),
	),
	),
	);

	// When a custom shape is provided, ExpansionTile will use the
	// Material widget to draw the shape and background color
	// instead of a Container.
	final Material material = getMaterial(tester);
	// Check the tile's background color when backgroundColor is applied.
	expect(material.color, backgroundColor);

	final Rect titleRect = tester.getRect(find.text('Expanded Tile'));
	final Rect trailingRect = tester.getRect(find.byIcon(Icons.expand_more));
	final Rect listTileRect = tester.getRect(find.byType(ListTile));
	final Rect tallerWidget = titleRect.height > trailingRect.height ? titleRect : trailingRect;

	// Check the positions of title and trailing Widgets, after padding is applied.
	expect(listTileRect.left, titleRect.left - 8);
	expect(listTileRect.right, trailingRect.right + 4);

	// Calculate the remaining height of ListTile from the default height.
	final double remainingHeight = 56 - tallerWidget.height;
	expect(listTileRect.top, tallerWidget.top - remainingHeight / 2 - 12);
	expect(listTileRect.bottom, tallerWidget.bottom + remainingHeight / 2 + 10);

	Color getIconColor() => tester.state<TestIconState>(find.byType(TestIcon)).iconTheme.color!;
	Color getTextColor() => tester.state<TestTextState>(find.byType(TestText)).textStyle.color!;

	// Check the expanded icon color when iconColor is applied.
	expect(getIconColor(), iconColor);
	// Check the expanded text color when textColor is applied.
	expect(getTextColor(), textColor);
	// Check the expanded ShapeBorder when shape is applied.
	expect(material.shape, shape);
	// Check the clipBehavior when shape is applied.
	expect(material.clipBehavior, clipBehavior);

	// Check the child position when expandedAlignment is applied.
	final Rect childRect = tester.getRect(find.text('Tile 1'));
	expect(childRect.right, 800 - 20);
	expect(childRect.left, 800 - childRect.width - 20);

	// Check the child padding when childrenPadding is applied.
	final Rect paddingRect = tester.getRect(find.byType(Padding).last);
	expect(childRect.top, paddingRect.top + 20);
	expect(childRect.left, paddingRect.left + 20);
	expect(childRect.right, paddingRect.right - 20);
	expect(childRect.bottom, paddingRect.bottom - 20);
	});

	testWidgets('Override ExpansionTile animation using ExpansionTileThemeData.AnimationStyle', (WidgetTester tester) async {
	const Key expansionTileKey = Key('expansionTileKey');

	Widget buildExpansionTile({ AnimationStyle? animationStyle }) {
	return MaterialApp(
	theme: ThemeData(
	expansionTileTheme: ExpansionTileThemeData(
	expansionAnimationStyle: animationStyle,
	),
	),
	home: const Material(
	child: Center(
	child: ExpansionTile(
	key: expansionTileKey,
	title: TestText('title'),
	children: <Widget>[
	SizedBox(height: 100, width: 100),
	],
	),
	),
	),
	);
	}

	await tester.pumpWidget(buildExpansionTile());

	double getHeight(Key key) => tester.getSize(find.byKey(key)).height;

	// Test initial ExpansionTile height.
	expect(getHeight(expansionTileKey), 58.0);

	// Test the default expansion animation.
	await tester.tap(find.text('title'));
	await tester.pump();
	await tester.pump(const Duration(milliseconds: 50)); // Advance the animation by 1/4 of its duration.

	expect(getHeight(expansionTileKey), closeTo(67.4, 0.1));

	await tester.pump(const Duration(milliseconds: 50)); // Advance the animation by 2/4 of its duration.

	expect(getHeight(expansionTileKey), closeTo(89.6, 0.1));

	await tester.pumpAndSettle(); // Advance the animation to the end.

	expect(getHeight(expansionTileKey), 158.0);

	// Tap to collapse the ExpansionTile.
	await tester.tap(find.text('title'));
	await tester.pumpAndSettle();

	// Override the animation duration.
	await tester.pumpWidget(buildExpansionTile(animationStyle: AnimationStyle(duration: const Duration(milliseconds: 800))));
	await tester.pumpAndSettle();

	// Test the overridden animation duration.
	await tester.tap(find.text('title'));
	await tester.pump();
	await tester.pump(const Duration(milliseconds: 200)); // Advance the animation by 1/4 of its duration.

	expect(getHeight(expansionTileKey), closeTo(67.4, 0.1));

	await tester.pump(const Duration(milliseconds: 200)); // Advance the animation by 2/4 of its duration.

	expect(getHeight(expansionTileKey), closeTo(89.6, 0.1));

	await tester.pumpAndSettle(); // Advance the animation to the end.

	expect(getHeight(expansionTileKey), 158.0);

	// Tap to collapse the ExpansionTile.
	await tester.tap(find.text('title'));
	await tester.pumpAndSettle();

	// Override the animation curve.
	await tester.pumpWidget(buildExpansionTile(animationStyle: AnimationStyle(curve: Easing.emphasizedDecelerate)));
	await tester.pumpAndSettle();

	// Test the overridden animation curve.
	await tester.tap(find.text('title'));
	await tester.pump();
	await tester.pump(const Duration(milliseconds: 50)); // Advance the animation by 1/4 of its duration.

	expect(getHeight(expansionTileKey), closeTo(141.2, 0.1));

	await tester.pump(const Duration(milliseconds: 50)); // Advance the animation by 2/4 of its duration.

	expect(getHeight(expansionTileKey), closeTo(153, 0.1));

	await tester.pumpAndSettle(); // Advance the animation to the end.

	expect(getHeight(expansionTileKey), 158.0);

	// Tap to collapse the ExpansionTile.
	await tester.tap(find.text('title'));

	// Test no animation.
	await tester.pumpWidget(buildExpansionTile(animationStyle: AnimationStyle.noAnimation));

	// Tap to expand the ExpansionTile.
	await tester.tap(find.text('title'));
	await tester.pump();

	expect(getHeight(expansionTileKey), 158.0);
	});
	}