blob: b49e5e96784822c9044345120780b738fcb9736a [file] [log] [blame]
// Copyright 2017 The Chromium 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:async';
import 'dart:typed_data';
import 'package:flutter/foundation.dart';
import 'package:flutter/painting.dart';
import 'package:flutter_test/flutter_test.dart';
import '../rendering/rendering_tester.dart';
import 'image_data.dart';
import 'mocks_for_image_cache.dart';
void main() {
TestRenderingFlutterBinding(); // initializes the imageCache
group(ImageProvider, () {
tearDown(() {
imageCache.clear();
});
test('NetworkImage non-null url test', () {
expect(() {
NetworkImage(nonconst(null));
}, throwsAssertionError);
});
test('ImageProvider can evict images', () async {
final Uint8List bytes = Uint8List.fromList(kTransparentImage);
final MemoryImage imageProvider = MemoryImage(bytes);
final ImageStream stream = imageProvider.resolve(ImageConfiguration.empty);
final Completer<void> completer = Completer<void>();
stream.addListener((ImageInfo info, bool syncCall) => completer.complete());
await completer.future;
expect(imageCache.currentSize, 1);
expect(await MemoryImage(bytes).evict(), true);
expect(imageCache.currentSize, 0);
});
test('ImageProvider.evict respects the provided ImageCache', () async {
final ImageCache otherCache = ImageCache();
final Uint8List bytes = Uint8List.fromList(kTransparentImage);
final MemoryImage imageProvider = MemoryImage(bytes);
otherCache.putIfAbsent(imageProvider, () => imageProvider.load(imageProvider));
final ImageStream stream = imageProvider.resolve(ImageConfiguration.empty);
final Completer<void> completer = Completer<void>();
stream.addListener((ImageInfo info, bool syncCall) => completer.complete());
await completer.future;
expect(otherCache.currentSize, 1);
expect(imageCache.currentSize, 1);
expect(await imageProvider.evict(cache: otherCache), true);
expect(otherCache.currentSize, 0);
expect(imageCache.currentSize, 1);
});
test('ImageProvider errors can always be caught', () async {
final ErrorImageProvider imageProvider = ErrorImageProvider();
final Completer<bool> caughtError = Completer<bool>();
FlutterError.onError = (FlutterErrorDetails details) {
caughtError.complete(false);
};
final ImageStream stream = imageProvider.resolve(ImageConfiguration.empty);
stream.addListener((ImageInfo info, bool syncCall) {
caughtError.complete(false);
}, onError: (dynamic error, StackTrace stackTrace) {
caughtError.complete(true);
});
expect(await caughtError.future, true);
});
});
test('ImageProvide.obtainKey errors will be caught', () async {
final ImageProvider imageProvider = ObtainKeyErrorImageProvider();
final Completer<bool> caughtError = Completer<bool>();
FlutterError.onError = (FlutterErrorDetails details) {
caughtError.complete(false);
};
final ImageStream stream = imageProvider.resolve(ImageConfiguration.empty);
stream.addListener((ImageInfo info, bool syncCall) {
caughtError.complete(false);
}, onError: (dynamic error, StackTrace stackTrace) {
caughtError.complete(true);
});
expect(await caughtError.future, true);
});
}