AFNetworking 2.0和单元测试

Question

我正在尝试使用XCTest对在XCode 5中使用AFNEtworking的类进行单元测试.我遇到的问题是我的AFHTTPRequestOperation的完成块永远不会被执行.我假设这是运行单元测试的XCode和AFNetworking的调度队列之间的一些脱节.以下测试用例通过,但永远不会到达完成块中的NSLog语句(没有日志输出,也没有捕获这些语句上设置的断点).相同的代码在单元测试之外工作.有谁知道如何解决这个问题？我正在使用Nocilla来模拟实际的请求,结果是使用真正的服务器重新调整有效响应？

编辑以使测试失败并在块中设置日志变量

- (void)setUp
{
    [super setUp];
    // Put setup code here. This method is called before the invocation of each test method in the class.



    [[LSNocilla sharedInstance] start];

    stubRequest(@"POST", @"http://www.example.com/module/api/ping").
    andReturn(200).
    withHeaders(@{@"Content-Type": @"application/json"}).
    withBody(@"{\"success\":true}");

    stubRequest(@"GET", @"http://www.example.com/module/api/ping?testkey=testval").
    andReturn(200).
    withHeaders(@{@"Content-Type": @"application/json"}).
    withBody(@"{\"success\":true}");
}

- (void)tearDown
{
    // Put teardown code here. This method is called after the invocation of each test method in the class.
    [super tearDown];

    [[LSNocilla sharedInstance] stop];
    [[LSNocilla sharedInstance] clearStubs];
}

- (void)testSanity
{
    AFSecurityPolicy *policy = [[AFSecurityPolicy alloc] init];
    //[policy setAllowInvalidCertificates:YES];

    AFHTTPRequestOperationManager *manager = [[AFHTTPRequestOperationManager alloc] initWithBaseURL:[NSURL URLWithString:@"http://www.example.com/module/api/ping"]];
    //manager.operationQueue = [NSOperationQueue mainQueue];
    [manager setSecurityPolicy:policy];


    manager.requestSerializer = [AFJSONRequestSerializer serializer];
    manager.responseSerializer = [AFJSONResponseSerializer serializer];


    __block id resObj = nil;
    __block id resError = nil;

    AFHTTPRequestOperation *req = [manager POST:@"http://www.example.com/module/api/ping"
                                    parameters:[NSDictionary dictionaryWithObject:@"testval" forKey:@"testkey"]
                                       success:^(AFHTTPRequestOperation *operation, id responseObject) {

                                           NSLog(@"Response: %@", responseObject);
                                           resObj = responseObject;
                                           return;

                                       }
                                       failure:^(AFHTTPRequestOperation *operation, NSError *error) {

                                            NSLog(@"Error: %@", error);
                                           resError = error;
                                           return;
                                       }];
    [req waitUntilFinished];

    NSLog(@"req.status: %d", req.response.statusCode);
    NSLog(@"req.responseObj: %@", req.responseObject);
    XCTAssertTrue(req.isFinished);
    NSLog(@"resObj: %@", resObj);
    NSLog(@"resError: %@", resError);
    XCTAssertEqual([[req.responseObject objectForKey:@"success"] boolValue], YES);

    XCTAssertEqual([[resObj objectForKey:@"success"] boolValue], YES);
}

控制台输出

Test Case '-[AppSupportTests testSanity]' started.
2014-04-29 16:45:07.424 xctest[72183:303] req.status: 200
2014-04-29 16:45:07.424 xctest[72183:303] req.responseObj: {
    success = 1;
}
2014-04-29 16:45:07.424 xctest[72183:303] resObj: (null)
2014-04-29 16:45:07.425 xctest[72183:303] resError: (null)
/Users/jlujan/Code/AppSupport/AppSupportTests/AppSupportTests.m:114: error: -[AppSupportTests testSanity] : (([[resObj objectForKey:@"success"] boolValue]) equal to (__objc_yes)) failed: ("NO") is not equal to ("YES")
Test Case '-[AppSupportTests testSanity]' failed (0.003 seconds).

Answer 1

根据评论中的讨论，我们发现waitUntilFinished一旦后台操作完成，它就不会等到调用完成块之后。

有一个更好的异步测试框架 - Expecta。
然后而不是调用：

XCTAssertTrue(req.isFinished);
XCTAssertEqual([[resObj objectForKey:@"success"] boolValue], YES);

你可以做：

expect(req.isFinished).will.beTruthy();
expect([[resObj objectForKey:@"success"] boolValue]).will.beTruthy();

还有很多其他匹配器，只需确保您在方法中设置了超时即可。+[Expecta setAsynchronousTestTimeout:]+setUp