| // Copyright 2014 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| import 'package:flutter/material.dart'; |
| import 'package:flutter_api_samples/widgets/implicit_animations/animated_container.0.dart' |
| as example; |
| import 'package:flutter_test/flutter_test.dart'; |
| |
| void main() { |
| testWidgets('AnimatedContainer updates on tap', (WidgetTester tester) async { |
| await tester.pumpWidget( |
| const example.AnimatedContainerExampleApp(), |
| ); |
| |
| Container container = tester.widget( |
| find.ancestor( |
| of: find.byType(AnimatedContainer), |
| matching: find.byType(Container), |
| ), |
| ); |
| expect( |
| (container.decoration! as BoxDecoration).color, |
| equals(Colors.blue), |
| ); |
| expect( |
| container.constraints, |
| equals(const BoxConstraints.tightFor(width: 100, height: 200)), |
| ); |
| expect(container.alignment, equals(Alignment.topCenter)); |
| |
| await tester.tap(find.byType(FlutterLogo)); |
| await tester.pump(); |
| |
| container = tester.widget( |
| find.ancestor( |
| of: find.byType(AnimatedContainer), |
| matching: find.byType(Container), |
| ), |
| ); |
| expect( |
| (container.decoration! as BoxDecoration).color, |
| equals(Colors.blue), |
| ); |
| expect( |
| container.constraints, |
| equals(const BoxConstraints.tightFor(width: 100, height: 200)), |
| ); |
| expect(container.alignment, equals(Alignment.topCenter)); |
| |
| // Advance animation to the end by the 2-second duration specified in |
| // the example app. |
| await tester.pump(const Duration(seconds: 2)); |
| |
| container = tester.widget( |
| find.ancestor( |
| of: find.byType(AnimatedContainer), |
| matching: find.byType(Container), |
| ), |
| ); |
| expect( |
| (container.decoration! as BoxDecoration).color, |
| equals(Colors.red), |
| ); |
| expect( |
| container.constraints, |
| equals(const BoxConstraints.tightFor(width: 200, height: 100)), |
| ); |
| expect(container.alignment, equals(Alignment.center)); |
| }); |
| } |