| // 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:typed_data'; |
| import 'dart:ui' as ui show Image; |
| |
| import 'package:flutter/material.dart'; |
| import 'package:flutter/rendering.dart'; |
| import 'package:flutter_test/flutter_test.dart'; |
| |
| import '../painting/fake_codec.dart'; |
| import '../painting/fake_image_provider.dart'; |
| import '../painting/image_data.dart'; |
| |
| Future<void> main() async { |
| final FakeCodec fakeCodec = await FakeCodec.fromData(Uint8List.fromList(kAnimatedGif)); |
| final FakeImageProvider fakeImageProvider = FakeImageProvider(fakeCodec); |
| |
| testWidgets('Obscured image does not animate', (WidgetTester tester) async { |
| final GlobalKey imageKey = GlobalKey(); |
| await tester.pumpWidget( |
| MaterialApp( |
| home: Image(image: fakeImageProvider, excludeFromSemantics: true, key: imageKey), |
| routes: <String, WidgetBuilder>{ |
| '/page': (BuildContext context) => Container(), |
| }, |
| ), |
| ); |
| final RenderImage renderImage = tester.renderObject(find.byType(Image)); |
| final ui.Image image1 = renderImage.image; |
| await tester.pump(const Duration(milliseconds: 100)); |
| final ui.Image image2 = renderImage.image; |
| expect(image1, isNot(same(image2))); |
| |
| |
| Navigator.pushNamed(imageKey.currentContext, '/page'); |
| await tester.pump(); // Starts the page animation. |
| await tester.pump(const Duration(seconds: 1)); // Let the page animation complete. |
| |
| // The image is now obscured by another page, it should not be changing |
| // frames. |
| final ui.Image image3 = renderImage.image; |
| await tester.pump(const Duration(milliseconds: 100)); |
| final ui.Image image4 = renderImage.image; |
| expect(image3, same(image4)); |
| }); |
| } |