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// 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));
});
}