| // 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_padding.0.dart' |
| as example; |
| import 'package:flutter_test/flutter_test.dart'; |
| |
| void main() { |
| testWidgets( |
| 'AnimatedPadding animates on ElevatedButton tap', |
| (WidgetTester tester) async { |
| await tester.pumpWidget( |
| const example.AnimatedPaddingExampleApp(), |
| ); |
| |
| Padding padding = tester.widget( |
| find.descendant( |
| of: find.byType(AnimatedPadding), |
| matching: find.byType(Padding), |
| ), |
| ); |
| expect(padding.padding, equals(EdgeInsets.zero)); |
| |
| await tester.tap(find.byType(ElevatedButton)); |
| await tester.pump(); |
| |
| padding = tester.widget( |
| find.descendant( |
| of: find.byType(AnimatedPadding), |
| matching: find.byType(Padding), |
| ), |
| ); |
| expect(padding.padding, equals(EdgeInsets.zero)); |
| |
| // Advance animation to the end by the 2-second duration specified in |
| // the example app. |
| await tester.pump(const Duration(seconds: 2)); |
| |
| padding = tester.widget( |
| find.descendant( |
| of: find.byType(AnimatedPadding), |
| matching: find.byType(Padding), |
| ), |
| ); |
| expect(padding.padding, equals(const EdgeInsets.all(100.0))); |
| }, |
| ); |
| } |