Files
Texture/Tests/ASBasicImageDownloaderTests.mm
Christos Gkekas 17d4d13463 Exposes a new option in ASImageDownloaderProtocol to retry image downloads (#1948)
* Exposes a new option in ASImageDownloaderProtocol to retry image downloads

At the moment the ASBasicImageDownloader does not automatically retry image downloads if the remote
host is unreachable. On the contrary the ASPINRemoteImageDownloader automatically retries. Retrying is
something that ultimately clients need to be able to control, for example to fail fast to an alternative image
rather than keep retrying for more than one minute while not displaying any image. This change exposes
a new option in the ASImageDownloaderProtocol to retry image downloads. It also uses this new option
in both ASNetworkImageNode and also ASMultiplexImageNode, setting it to YES to preserve the current
behaviour.

* Fixes a failing test in ASMultiplexImageNodeTests

* Fixes ScreenNode.m

ScreenNode.m is implementing ASImageDownloaderProtocol and needs to
be fixed to reflect changes in the latter.
2021-02-19 08:23:01 -08:00

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2.1 KiB
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//
// ASBasicImageDownloaderTests.mm
// Texture
//
// Copyright (c) Facebook, Inc. and its affiliates. All rights reserved.
// Changes after 4/13/2017 are: Copyright (c) Pinterest, Inc. All rights reserved.
// Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0
//
#import <XCTest/XCTest.h>
#import <AsyncDisplayKit/ASBasicImageDownloader.h>
@interface ASBasicImageDownloaderTests : XCTestCase
@end
@implementation ASBasicImageDownloaderTests
- (void)testAsynchronouslyDownloadTheSameURLTwice
{
XCTestExpectation *firstExpectation = [self expectationWithDescription:@"First ASBasicImageDownloader completion handler should be called within 3 seconds"];
XCTestExpectation *secondExpectation = [self expectationWithDescription:@"Second ASBasicImageDownloader completion handler should be called within 3 seconds"];
ASBasicImageDownloader *downloader = [ASBasicImageDownloader sharedImageDownloader];
NSURL *URL = [[NSBundle bundleForClass:[self class]] URLForResource:@"logo-square"
withExtension:@"png"
subdirectory:@"TestResources"];
[downloader downloadImageWithURL:URL
shouldRetry:YES
callbackQueue:dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)
downloadProgress:nil
completion:^(id<ASImageContainerProtocol> _Nullable image, NSError * _Nullable error, id _Nullable downloadIdentifier, id _Nullable userInfo) {
[firstExpectation fulfill];
}];
[downloader downloadImageWithURL:URL
shouldRetry:YES
callbackQueue:dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)
downloadProgress:nil
completion:^(id<ASImageContainerProtocol> _Nullable image, NSError * _Nullable error, id _Nullable downloadIdentifier, id _Nullable userInfo) {
[secondExpectation fulfill];
}];
[self waitForExpectationsWithTimeout:30 handler:nil];
}
@end