| // 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:math' as math; |
| import 'dart:ui' show Rect; |
| |
| import 'package:flutter/material.dart'; |
| import 'package:flutter/rendering.dart'; |
| import 'package:flutter_test/flutter_test.dart'; |
| |
| void main() { |
| testWidgets('toString control test', (WidgetTester tester) async { |
| const Widget widget = FadeTransition( |
| opacity: kAlwaysCompleteAnimation, |
| child: Text('Ready', textDirection: TextDirection.ltr), |
| ); |
| expect(widget.toString, isNot(throwsException)); |
| }); |
| |
| group('DecoratedBoxTransition test', () { |
| final DecorationTween decorationTween = DecorationTween( |
| begin: BoxDecoration( |
| color: const Color(0xFFFFFFFF), |
| border: Border.all( |
| width: 4.0, |
| ), |
| borderRadius: BorderRadius.zero, |
| boxShadow: const <BoxShadow> [BoxShadow( |
| color: Color(0x66000000), |
| blurRadius: 10.0, |
| spreadRadius: 4.0, |
| )], |
| ), |
| end: BoxDecoration( |
| color: const Color(0xFF000000), |
| border: Border.all( |
| color: const Color(0xFF202020), |
| ), |
| borderRadius: const BorderRadius.all(Radius.circular(10.0)), |
| // No shadow. |
| ), |
| ); |
| |
| late AnimationController controller; |
| |
| setUp(() { |
| controller = AnimationController(vsync: const TestVSync()); |
| }); |
| |
| testWidgets('decoration test', (WidgetTester tester) async { |
| final DecoratedBoxTransition transitionUnderTest = |
| DecoratedBoxTransition( |
| decoration: decorationTween.animate(controller), |
| child: const Text( |
| "Doesn't matter", |
| textDirection: TextDirection.ltr, |
| ), |
| ); |
| |
| await tester.pumpWidget(transitionUnderTest); |
| RenderDecoratedBox actualBox = tester.renderObject(find.byType(DecoratedBox)); |
| BoxDecoration actualDecoration = actualBox.decoration as BoxDecoration; |
| |
| expect(actualDecoration.color, const Color(0xFFFFFFFF)); |
| expect(actualDecoration.boxShadow![0].blurRadius, 10.0); |
| expect(actualDecoration.boxShadow![0].spreadRadius, 4.0); |
| expect(actualDecoration.boxShadow![0].color, const Color(0x66000000)); |
| |
| controller.value = 0.5; |
| |
| await tester.pump(); |
| actualBox = tester.renderObject(find.byType(DecoratedBox)); |
| actualDecoration = actualBox.decoration as BoxDecoration; |
| |
| expect(actualDecoration.color, const Color(0xFF7F7F7F)); |
| expect(actualDecoration.border, isA<Border>()); |
| final Border border = actualDecoration.border! as Border; |
| expect(border.left.width, 2.5); |
| expect(border.left.style, BorderStyle.solid); |
| expect(border.left.color, const Color(0xFF101010)); |
| expect(actualDecoration.borderRadius, const BorderRadius.all(Radius.circular(5.0))); |
| expect(actualDecoration.shape, BoxShape.rectangle); |
| expect(actualDecoration.boxShadow![0].blurRadius, 5.0); |
| expect(actualDecoration.boxShadow![0].spreadRadius, 2.0); |
| // Scaling a shadow doesn't change the color. |
| expect(actualDecoration.boxShadow![0].color, const Color(0x66000000)); |
| |
| controller.value = 1.0; |
| |
| await tester.pump(); |
| actualBox = tester.renderObject(find.byType(DecoratedBox)); |
| actualDecoration = actualBox.decoration as BoxDecoration; |
| |
| expect(actualDecoration.color, const Color(0xFF000000)); |
| expect(actualDecoration.boxShadow, null); |
| }); |
| |
| testWidgets('animations work with curves test', (WidgetTester tester) async { |
| final Animation<Decoration> curvedDecorationAnimation = |
| decorationTween.animate(CurvedAnimation( |
| parent: controller, |
| curve: Curves.easeOut, |
| )); |
| |
| final DecoratedBoxTransition transitionUnderTest = DecoratedBoxTransition( |
| decoration: curvedDecorationAnimation, |
| position: DecorationPosition.foreground, |
| child: const Text( |
| "Doesn't matter", |
| textDirection: TextDirection.ltr, |
| ), |
| ); |
| |
| await tester.pumpWidget(transitionUnderTest); |
| |
| RenderDecoratedBox actualBox = tester.renderObject(find.byType(DecoratedBox)); |
| BoxDecoration actualDecoration = actualBox.decoration as BoxDecoration; |
| |
| expect(actualDecoration.color, const Color(0xFFFFFFFF)); |
| expect(actualDecoration.boxShadow![0].blurRadius, 10.0); |
| expect(actualDecoration.boxShadow![0].spreadRadius, 4.0); |
| expect(actualDecoration.boxShadow![0].color, const Color(0x66000000)); |
| |
| controller.value = 0.5; |
| |
| await tester.pump(); |
| actualBox = tester.renderObject(find.byType(DecoratedBox)); |
| actualDecoration = actualBox.decoration as BoxDecoration; |
| |
| // Same as the test above but the values should be much closer to the |
| // tween's end values given the easeOut curve. |
| expect(actualDecoration.color, const Color(0xFF505050)); |
| expect(actualDecoration.border, isA<Border>()); |
| final Border border = actualDecoration.border! as Border; |
| expect(border.left.width, moreOrLessEquals(1.9, epsilon: 0.1)); |
| expect(border.left.style, BorderStyle.solid); |
| expect(border.left.color, const Color(0xFF151515)); |
| expect(actualDecoration.borderRadius!.resolve(TextDirection.ltr).topLeft.x, moreOrLessEquals(6.8, epsilon: 0.1)); |
| expect(actualDecoration.shape, BoxShape.rectangle); |
| expect(actualDecoration.boxShadow![0].blurRadius, moreOrLessEquals(3.1, epsilon: 0.1)); |
| expect(actualDecoration.boxShadow![0].spreadRadius, moreOrLessEquals(1.2, epsilon: 0.1)); |
| // Scaling a shadow doesn't change the color. |
| expect(actualDecoration.boxShadow![0].color, const Color(0x66000000)); |
| }); |
| }); |
| |
| testWidgets('AlignTransition animates', (WidgetTester tester) async { |
| final AnimationController controller = AnimationController(vsync: const TestVSync()); |
| final Animation<Alignment> alignmentTween = AlignmentTween( |
| begin: Alignment.centerLeft, |
| end: Alignment.bottomRight, |
| ).animate(controller); |
| final Widget widget = AlignTransition( |
| alignment: alignmentTween, |
| child: const Text('Ready', textDirection: TextDirection.ltr), |
| ); |
| |
| await tester.pumpWidget(widget); |
| |
| final RenderPositionedBox actualPositionedBox = tester.renderObject(find.byType(Align)); |
| |
| Alignment actualAlignment = actualPositionedBox.alignment as Alignment; |
| expect(actualAlignment, Alignment.centerLeft); |
| |
| controller.value = 0.5; |
| await tester.pump(); |
| actualAlignment = actualPositionedBox.alignment as Alignment; |
| expect(actualAlignment, const Alignment(0.0, 0.5)); |
| }); |
| |
| testWidgets('RelativePositionedTransition animates', (WidgetTester tester) async { |
| final AnimationController controller = AnimationController(vsync: const TestVSync()); |
| final Animation<Rect?> rectTween = RectTween( |
| begin: const Rect.fromLTWH(0, 0, 30, 40), |
| end: const Rect.fromLTWH(100, 200, 100, 200), |
| ).animate(controller); |
| final Widget widget = Directionality( |
| textDirection: TextDirection.rtl, |
| child: Stack( |
| alignment: Alignment.centerLeft, |
| children: <Widget>[ |
| RelativePositionedTransition( |
| size: const Size(200, 300), |
| rect: rectTween, |
| child: const Placeholder(), |
| ), |
| ], |
| ), |
| ); |
| |
| await tester.pumpWidget(widget); |
| |
| final Positioned actualPositioned = tester.widget(find.byType(Positioned)); |
| final RenderBox renderBox = tester.renderObject(find.byType(Placeholder)); |
| |
| Rect actualRect = Rect.fromLTRB( |
| actualPositioned.left!, |
| actualPositioned.top!, |
| actualPositioned.right ?? 0.0, |
| actualPositioned.bottom ?? 0.0, |
| ); |
| expect(actualRect, equals(const Rect.fromLTRB(0, 0, 170, 260))); |
| expect(renderBox.size, equals(const Size(630, 340))); |
| |
| controller.value = 0.5; |
| await tester.pump(); |
| actualRect = Rect.fromLTRB( |
| actualPositioned.left!, |
| actualPositioned.top!, |
| actualPositioned.right ?? 0.0, |
| actualPositioned.bottom ?? 0.0, |
| ); |
| expect(actualRect, equals(const Rect.fromLTWH(0, 0, 170, 260))); |
| expect(renderBox.size, equals(const Size(665, 420))); |
| }); |
| |
| testWidgets('AlignTransition keeps width and height factors', (WidgetTester tester) async { |
| final AnimationController controller = AnimationController(vsync: const TestVSync()); |
| final Animation<Alignment> alignmentTween = AlignmentTween( |
| begin: Alignment.centerLeft, |
| end: Alignment.bottomRight, |
| ).animate(controller); |
| final Widget widget = AlignTransition( |
| alignment: alignmentTween, |
| widthFactor: 0.3, |
| heightFactor: 0.4, |
| child: const Text('Ready', textDirection: TextDirection.ltr), |
| ); |
| |
| await tester.pumpWidget(widget); |
| |
| final Align actualAlign = tester.widget(find.byType(Align)); |
| |
| expect(actualAlign.widthFactor, 0.3); |
| expect(actualAlign.heightFactor, 0.4); |
| }); |
| |
| testWidgets('SizeTransition clamps negative size factors - vertical axis', (WidgetTester tester) async { |
| final AnimationController controller = AnimationController(vsync: const TestVSync()); |
| final Animation<double> animation = Tween<double>(begin: -1.0, end: 1.0).animate(controller); |
| |
| final Widget widget = Directionality( |
| textDirection: TextDirection.ltr, |
| child: SizeTransition( |
| sizeFactor: animation, |
| child: const Text('Ready'), |
| ), |
| ); |
| |
| await tester.pumpWidget(widget); |
| |
| final RenderPositionedBox actualPositionedBox = tester.renderObject(find.byType(Align)); |
| expect(actualPositionedBox.heightFactor, 0.0); |
| |
| controller.value = 0.0; |
| await tester.pump(); |
| expect(actualPositionedBox.heightFactor, 0.0); |
| |
| controller.value = 0.75; |
| await tester.pump(); |
| expect(actualPositionedBox.heightFactor, 0.5); |
| |
| controller.value = 1.0; |
| await tester.pump(); |
| expect(actualPositionedBox.heightFactor, 1.0); |
| }); |
| |
| testWidgets('SizeTransition clamps negative size factors - horizontal axis', (WidgetTester tester) async { |
| final AnimationController controller = AnimationController(vsync: const TestVSync()); |
| final Animation<double> animation = Tween<double>(begin: -1.0, end: 1.0).animate(controller); |
| |
| final Widget widget = Directionality( |
| textDirection: TextDirection.ltr, |
| child: SizeTransition( |
| axis: Axis.horizontal, |
| sizeFactor: animation, |
| child: const Text('Ready'), |
| ), |
| ); |
| |
| await tester.pumpWidget(widget); |
| |
| final RenderPositionedBox actualPositionedBox = tester.renderObject(find.byType(Align)); |
| expect(actualPositionedBox.widthFactor, 0.0); |
| |
| controller.value = 0.0; |
| await tester.pump(); |
| expect(actualPositionedBox.widthFactor, 0.0); |
| |
| controller.value = 0.75; |
| await tester.pump(); |
| expect(actualPositionedBox.widthFactor, 0.5); |
| |
| controller.value = 1.0; |
| await tester.pump(); |
| expect(actualPositionedBox.widthFactor, 1.0); |
| }); |
| |
| testWidgets('RotationTransition animates', (WidgetTester tester) async { |
| final AnimationController controller = AnimationController(vsync: const TestVSync()); |
| final Widget widget = RotationTransition( |
| alignment: Alignment.topRight, |
| turns: controller, |
| child: const Text( |
| 'Rotation', |
| textDirection: TextDirection.ltr, |
| ), |
| ); |
| |
| await tester.pumpWidget(widget); |
| Transform actualRotatedBox = tester.widget(find.byType(Transform)); |
| Matrix4 actualTurns = actualRotatedBox.transform; |
| expect(actualTurns, equals(Matrix4.rotationZ(0.0))); |
| |
| controller.value = 0.5; |
| await tester.pump(); |
| actualRotatedBox = tester.widget(find.byType(Transform)); |
| actualTurns = actualRotatedBox.transform; |
| expect(actualTurns, Matrix4.rotationZ(math.pi)); |
| |
| controller.value = 0.75; |
| await tester.pump(); |
| actualRotatedBox = tester.widget(find.byType(Transform)); |
| actualTurns = actualRotatedBox.transform; |
| expect(actualTurns, Matrix4.rotationZ(math.pi * 1.5)); |
| }); |
| |
| testWidgets('RotationTransition maintains chosen alignment during animation', (WidgetTester tester) async { |
| final AnimationController controller = AnimationController(vsync: const TestVSync()); |
| final Widget widget = RotationTransition( |
| alignment: Alignment.topRight, |
| turns: controller, |
| child: const Text('Rotation', textDirection: TextDirection.ltr), |
| ); |
| |
| await tester.pumpWidget(widget); |
| RotationTransition actualRotatedBox = tester.widget(find.byType(RotationTransition)); |
| Alignment actualAlignment = actualRotatedBox.alignment; |
| expect(actualAlignment, Alignment.topRight); |
| |
| controller.value = 0.5; |
| await tester.pump(); |
| actualRotatedBox = tester.widget(find.byType(RotationTransition)); |
| actualAlignment = actualRotatedBox.alignment; |
| expect(actualAlignment, Alignment.topRight); |
| }); |
| |
| group('FadeTransition', () { |
| double _getOpacity(WidgetTester tester, String textValue) { |
| final FadeTransition opacityWidget = tester.widget<FadeTransition>( |
| find.ancestor( |
| of: find.text(textValue), |
| matching: find.byType(FadeTransition), |
| ).first, |
| ); |
| return opacityWidget.opacity.value; |
| } |
| testWidgets('animates', (WidgetTester tester) async { |
| final AnimationController controller = AnimationController(vsync: const TestVSync()); |
| final Animation<double> animation = Tween<double>(begin: 0.0, end: 1.0).animate(controller); |
| final Widget widget = Directionality( |
| textDirection: TextDirection.ltr, |
| child: FadeTransition( |
| opacity: animation, |
| child: const Text('Fade In'), |
| ), |
| ); |
| |
| await tester.pumpWidget(widget); |
| |
| expect(_getOpacity(tester, 'Fade In'), 0.0); |
| |
| controller.value = 0.25; |
| await tester.pump(); |
| expect(_getOpacity(tester, 'Fade In'), 0.25); |
| |
| controller.value = 0.5; |
| await tester.pump(); |
| expect(_getOpacity(tester, 'Fade In'), 0.5); |
| |
| controller.value = 0.75; |
| await tester.pump(); |
| expect(_getOpacity(tester, 'Fade In'), 0.75); |
| |
| controller.value = 1.0; |
| await tester.pump(); |
| expect(_getOpacity(tester, 'Fade In'), 1.0); |
| }); |
| }); |
| |
| group('SliverFadeTransition', () { |
| double _getOpacity(WidgetTester tester, String textValue) { |
| final SliverFadeTransition opacityWidget = tester.widget<SliverFadeTransition>( |
| find.ancestor( |
| of: find.text(textValue), |
| matching: find.byType(SliverFadeTransition), |
| ).first, |
| ); |
| return opacityWidget.opacity.value; |
| } |
| testWidgets('animates', (WidgetTester tester) async { |
| final AnimationController controller = AnimationController(vsync: const TestVSync()); |
| final Animation<double> animation = Tween<double>(begin: 0.0, end: 1.0).animate(controller); |
| final Widget widget = Localizations( |
| locale: const Locale('en', 'us'), |
| delegates: const <LocalizationsDelegate<dynamic>>[ |
| DefaultWidgetsLocalizations.delegate, |
| DefaultMaterialLocalizations.delegate, |
| ], |
| child: Directionality( |
| textDirection: TextDirection.ltr, |
| child: MediaQuery( |
| data: const MediaQueryData(), |
| child: CustomScrollView( |
| slivers: <Widget>[ |
| SliverFadeTransition( |
| opacity: animation, |
| sliver: const SliverToBoxAdapter( |
| child: Text('Fade In'), |
| ), |
| ), |
| ], |
| ), |
| ), |
| ), |
| ); |
| |
| await tester.pumpWidget(widget); |
| |
| expect(_getOpacity(tester, 'Fade In'), 0.0); |
| |
| controller.value = 0.25; |
| await tester.pump(); |
| expect(_getOpacity(tester, 'Fade In'), 0.25); |
| |
| controller.value = 0.5; |
| await tester.pump(); |
| expect(_getOpacity(tester, 'Fade In'), 0.5); |
| |
| controller.value = 0.75; |
| await tester.pump(); |
| expect(_getOpacity(tester, 'Fade In'), 0.75); |
| |
| controller.value = 1.0; |
| await tester.pump(); |
| expect(_getOpacity(tester, 'Fade In'), 1.0); |
| }); |
| }); |
| } |
