419a2853a8
* Revert "Live image cache (#51249)" This reverts commit e2dcdb60e327f80d414d3d1e72e2863bf4c9252c. * fix tests for other commit
247 lines
9.9 KiB
Dart
247 lines
9.9 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter/painting.dart';
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import '../flutter_test_alternative.dart';
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import '../rendering/rendering_tester.dart';
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import 'mocks_for_image_cache.dart';
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void main() {
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group(ImageCache, () {
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setUpAll(() {
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TestRenderingFlutterBinding(); // initializes the imageCache
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});
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tearDown(() {
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imageCache.clear();
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imageCache.maximumSize = 1000;
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imageCache.maximumSizeBytes = 10485760;
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});
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test('maintains cache size', () async {
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imageCache.maximumSize = 3;
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final TestImageInfo a = await extractOneFrame(const TestImageProvider(1, 1).resolve(ImageConfiguration.empty)) as TestImageInfo;
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expect(a.value, equals(1));
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final TestImageInfo b = await extractOneFrame(const TestImageProvider(1, 2).resolve(ImageConfiguration.empty)) as TestImageInfo;
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expect(b.value, equals(1));
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final TestImageInfo c = await extractOneFrame(const TestImageProvider(1, 3).resolve(ImageConfiguration.empty)) as TestImageInfo;
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expect(c.value, equals(1));
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final TestImageInfo d = await extractOneFrame(const TestImageProvider(1, 4).resolve(ImageConfiguration.empty)) as TestImageInfo;
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expect(d.value, equals(1));
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final TestImageInfo e = await extractOneFrame(const TestImageProvider(1, 5).resolve(ImageConfiguration.empty)) as TestImageInfo;
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expect(e.value, equals(1));
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final TestImageInfo f = await extractOneFrame(const TestImageProvider(1, 6).resolve(ImageConfiguration.empty)) as TestImageInfo;
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expect(f.value, equals(1));
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expect(f, equals(a));
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// cache still only has one entry in it: 1(1)
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final TestImageInfo g = await extractOneFrame(const TestImageProvider(2, 7).resolve(ImageConfiguration.empty)) as TestImageInfo;
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expect(g.value, equals(7));
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// cache has two entries in it: 1(1), 2(7)
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final TestImageInfo h = await extractOneFrame(const TestImageProvider(1, 8).resolve(ImageConfiguration.empty)) as TestImageInfo;
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expect(h.value, equals(1));
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// cache still has two entries in it: 2(7), 1(1)
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final TestImageInfo i = await extractOneFrame(const TestImageProvider(3, 9).resolve(ImageConfiguration.empty)) as TestImageInfo;
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expect(i.value, equals(9));
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// cache has three entries in it: 2(7), 1(1), 3(9)
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final TestImageInfo j = await extractOneFrame(const TestImageProvider(1, 10).resolve(ImageConfiguration.empty)) as TestImageInfo;
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expect(j.value, equals(1));
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// cache still has three entries in it: 2(7), 3(9), 1(1)
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final TestImageInfo k = await extractOneFrame(const TestImageProvider(4, 11).resolve(ImageConfiguration.empty)) as TestImageInfo;
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expect(k.value, equals(11));
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// cache has three entries: 3(9), 1(1), 4(11)
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final TestImageInfo l = await extractOneFrame(const TestImageProvider(1, 12).resolve(ImageConfiguration.empty)) as TestImageInfo;
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expect(l.value, equals(1));
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// cache has three entries: 3(9), 4(11), 1(1)
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final TestImageInfo m = await extractOneFrame(const TestImageProvider(2, 13).resolve(ImageConfiguration.empty)) as TestImageInfo;
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expect(m.value, equals(13));
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// cache has three entries: 4(11), 1(1), 2(13)
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final TestImageInfo n = await extractOneFrame(const TestImageProvider(3, 14).resolve(ImageConfiguration.empty)) as TestImageInfo;
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expect(n.value, equals(14));
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// cache has three entries: 1(1), 2(13), 3(14)
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final TestImageInfo o = await extractOneFrame(const TestImageProvider(4, 15).resolve(ImageConfiguration.empty)) as TestImageInfo;
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expect(o.value, equals(15));
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// cache has three entries: 2(13), 3(14), 4(15)
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final TestImageInfo p = await extractOneFrame(const TestImageProvider(1, 16).resolve(ImageConfiguration.empty)) as TestImageInfo;
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expect(p.value, equals(16));
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// cache has three entries: 3(14), 4(15), 1(16)
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});
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test('clear removes all images and resets cache size', () async {
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const TestImage testImage = TestImage(width: 8, height: 8);
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expect(imageCache.currentSize, 0);
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expect(imageCache.currentSizeBytes, 0);
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await extractOneFrame(const TestImageProvider(1, 1, image: testImage).resolve(ImageConfiguration.empty));
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await extractOneFrame(const TestImageProvider(2, 2, image: testImage).resolve(ImageConfiguration.empty));
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expect(imageCache.currentSize, 2);
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expect(imageCache.currentSizeBytes, 256 * 2);
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imageCache.clear();
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expect(imageCache.currentSize, 0);
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expect(imageCache.currentSizeBytes, 0);
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});
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test('evicts individual images', () async {
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const TestImage testImage = TestImage(width: 8, height: 8);
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await extractOneFrame(const TestImageProvider(1, 1, image: testImage).resolve(ImageConfiguration.empty));
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await extractOneFrame(const TestImageProvider(2, 2, image: testImage).resolve(ImageConfiguration.empty));
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expect(imageCache.currentSize, 2);
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expect(imageCache.currentSizeBytes, 256 * 2);
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expect(imageCache.evict(1), true);
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expect(imageCache.currentSize, 1);
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expect(imageCache.currentSizeBytes, 256);
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});
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test('Do not cache large images', () async {
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const TestImage testImage = TestImage(width: 8, height: 8);
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imageCache.maximumSizeBytes = 1;
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await extractOneFrame(const TestImageProvider(1, 1, image: testImage).resolve(ImageConfiguration.empty));
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expect(imageCache.currentSize, 0);
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expect(imageCache.currentSizeBytes, 0);
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expect(imageCache.maximumSizeBytes, 1);
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});
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test('Returns null if an error is caught resolving an image', () {
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final ErrorImageProvider errorImage = ErrorImageProvider();
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expect(() => imageCache.putIfAbsent(errorImage, () => errorImage.load(errorImage, null)), throwsA(isA<Error>()));
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bool caughtError = false;
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final ImageStreamCompleter result = imageCache.putIfAbsent(errorImage, () => errorImage.load(errorImage, null), onError: (dynamic error, StackTrace stackTrace) {
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caughtError = true;
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});
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expect(result, null);
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expect(caughtError, true);
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});
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test('already pending image is returned when it is put into the cache again', () async {
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const TestImage testImage = TestImage(width: 8, height: 8);
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final TestImageStreamCompleter completer1 = TestImageStreamCompleter();
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final TestImageStreamCompleter completer2 = TestImageStreamCompleter();
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final TestImageStreamCompleter resultingCompleter1 = imageCache.putIfAbsent(testImage, () {
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return completer1;
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}) as TestImageStreamCompleter;
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final TestImageStreamCompleter resultingCompleter2 = imageCache.putIfAbsent(testImage, () {
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return completer2;
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}) as TestImageStreamCompleter;
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expect(resultingCompleter1, completer1);
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expect(resultingCompleter2, completer1);
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});
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test('pending image is removed when cache is cleared', () async {
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const TestImage testImage = TestImage(width: 8, height: 8);
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final TestImageStreamCompleter completer1 = TestImageStreamCompleter();
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final TestImageStreamCompleter completer2 = TestImageStreamCompleter();
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final TestImageStreamCompleter resultingCompleter1 = imageCache.putIfAbsent(testImage, () {
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return completer1;
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}) as TestImageStreamCompleter;
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imageCache.clear();
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final TestImageStreamCompleter resultingCompleter2 = imageCache.putIfAbsent(testImage, () {
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return completer2;
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}) as TestImageStreamCompleter;
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expect(resultingCompleter1, completer1);
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expect(resultingCompleter2, completer2);
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});
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test('pending image is removed when image is evicted', () async {
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const TestImage testImage = TestImage(width: 8, height: 8);
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final TestImageStreamCompleter completer1 = TestImageStreamCompleter();
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final TestImageStreamCompleter completer2 = TestImageStreamCompleter();
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final TestImageStreamCompleter resultingCompleter1 = imageCache.putIfAbsent(testImage, () {
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return completer1;
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}) as TestImageStreamCompleter;
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imageCache.evict(testImage);
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final TestImageStreamCompleter resultingCompleter2 = imageCache.putIfAbsent(testImage, () {
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return completer2;
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}) as TestImageStreamCompleter;
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expect(resultingCompleter1, completer1);
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expect(resultingCompleter2, completer2);
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});
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test("failed image can successfully be removed from the cache's pending images", () async {
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const TestImage testImage = TestImage(width: 8, height: 8);
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const FailingTestImageProvider(1, 1, image: testImage)
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.resolve(ImageConfiguration.empty)
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.addListener(ImageStreamListener(
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(ImageInfo image, bool synchronousCall) { },
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onError: (dynamic exception, StackTrace stackTrace) {
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final bool evicationResult = imageCache.evict(1);
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expect(evicationResult, isTrue);
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},
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));
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});
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test('containsKey - pending', () async {
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const TestImage testImage = TestImage(width: 8, height: 8);
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final TestImageStreamCompleter completer1 = TestImageStreamCompleter();
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final TestImageStreamCompleter resultingCompleter1 = imageCache.putIfAbsent(testImage, () {
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return completer1;
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}) as TestImageStreamCompleter;
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expect(resultingCompleter1, completer1);
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expect(imageCache.containsKey(testImage), true);
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});
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test('containsKey - completed', () async {
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const TestImage testImage = TestImage(width: 8, height: 8);
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final TestImageStreamCompleter completer1 = TestImageStreamCompleter();
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final TestImageStreamCompleter resultingCompleter1 = imageCache.putIfAbsent(testImage, () {
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return completer1;
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}) as TestImageStreamCompleter;
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// Mark as complete
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completer1.testSetImage(testImage);
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expect(resultingCompleter1, completer1);
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expect(imageCache.containsKey(testImage), true);
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});
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});
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}
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