ASBasicImageDownloaderTests.m

//
//  ASBasicImageDownloaderTests.m
//  AsyncDisplayKit
//
//  Created by Victor Mayorov on 10/06/15.
//
//  Copyright (c) 2014-present, Facebook, Inc.  All rights reserved.
//  This source code is licensed under the BSD-style license found in the
//  LICENSE file in the root directory of this source tree. An additional grant
//  of patent rights can be found in the PATENTS file in the same directory.
//

#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 = [NSURL URLWithString:@"http://wrongPath/wrongResource.png"];

  [downloader downloadImageWithURL:URL
                     callbackQueue:dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)
                  downloadProgress:nil
                        completion:^(id<ASImageContainerProtocol>  _Nullable image, NSError * _Nullable error, id  _Nullable downloadIdentifier) {
                          [firstExpectation fulfill];
                        }];
  
  [downloader downloadImageWithURL:URL
                     callbackQueue:dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)
                  downloadProgress:nil
                        completion:^(id<ASImageContainerProtocol>  _Nullable image, NSError * _Nullable error, id  _Nullable downloadIdentifier) {
                          [secondExpectation fulfill];
                        }];

  [self waitForExpectationsWithTimeout:30 handler:nil];
}

@end