ios - AFNetworking での Cocoa エラー 3840

Question

AFNetworking 2.0 と OHHTTPStubs を使用して単体テスト ケースを作成していますが、テストは常に次のエラーで失敗します。

応答エラー: 操作を完了できませんでした。(ココア エラー 3840)。

どうもありがとう！

以下は簡単なテスト Json (User.json) です: { "userId": "abc", "email": "ab@pant.com", "username": "usera" }

およびテスト ケース コード:

- (void)testGet
{
    [OHHTTPStubs stubRequestsPassingTest:^BOOL(NSURLRequest *request) {
        return YES; // Stub ALL requests without any condition
    } withStubResponse:^OHHTTPStubsResponse*(NSURLRequest *request) {
        return [OHHTTPStubsResponse responseWithFileAtPath:OHPathForFileInBundle(@"User.json",nil)
            statusCode:200 headers:@{@"Content-Type":@"application/json"}];
    }];

    dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);

    AFHTTPSessionManager* requestManager = [[AFHTTPSessionManager alloc]initWithBaseURL:[NSURL URLWithString:@"http://test.com"]];
    AFJSONResponseSerializer* responseSerializer = [[[AFJSONResponseSerializer alloc]init] autorelease];
    responseSerializer.readingOptions = NSJSONReadingAllowFragments;
    responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"text/html"];
    responseSerializer.acceptableStatusCodes = [NSIndexSet indexSetWithIndexesInRange:NSMakeRange(200, 2)];
    requestManager.responseSerializer = responseSerializer;

    AFJSONRequestSerializer* requestSerializer = [[AFJSONRequestSerializer alloc] init];
    requestSerializer.writingOptions = NSJSONWritingPrettyPrinted;
    [requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Accept"];

    requestManager.requestSerializer = requestSerializer;

    _done = NO;
    [requestManager GET:@"stream" parameters:nil success:^(NSURLSessionDataTask * task, id JSON)
    {
        NSLog(@"Response data:%@", JSON);
        XCTAssert(JSON != nil, @"null response");
        dispatch_semaphore_signal(semaphore);

    } failure:^(NSURLSessionDataTask *__unused task, NSError *error) {
        NSLog(@"Response error:%@", [error localizedDescription]);
        XCTFail(@"fail to get response");
        dispatch_semaphore_signal(semaphore);
    }];

    while (dispatch_semaphore_wait(semaphore, DISPATCH_TIME_NOW))
    {
        [[NSRunLoop currentRunLoop] runMode:NSDefaultRunLoopMode
                                 beforeDate:[NSDate dateWithTimeIntervalSinceNow:10]];
    }
}