ios - Cedar の AFNetworking を使用した OHHTTPStubs

Question

ネットワーク POST 要求の単純なスタブをセットアップするのに苦労しています。OHHTTPStubs のドキュメントやオンラインのその他のリソースからできる限りモデル化しましたが、何かが欠けているに違いないと思います。onStubActivationメソッドによるロギングに基づいて呼び出されるスタブを確認したいと思います。私のテストは次のようになります。

#import "Cedar.h"
#import "OHHTTPStubs.h"
#import "Client.h"

SPEC_BEGIN(Spec)

describe(@"Client", ^{
    __block Client *subject;
    __block __weak id<OHHTTPStubsDescriptor> stub;

    beforeEach(^{
        subject = [[Client alloc] init];
        stub = [OHHTTPStubs stubRequestsPassingTest:^BOOL(NSURLRequest *request) {
            return YES;
        } withStubResponse:^OHHTTPStubsResponse*(NSURLRequest *request) {
            return [OHHTTPStubsResponse 
                        responseWithJSONObject:@{} 
                        statusCode:200 
                        headers:@{ @"Access-Token": @"new-token"}];
        }];
        stub.name = @"success-stub";

        [OHHTTPStubs onStubActivation:
            ^(NSURLRequest *request, id<OHHTTPStubsDescriptor> stub) {
                NSLog(@"%@ stubbed by %@.", request.URL, stub.name);
        }];
    });

    describe(@"-signInWithUsername:Password:SuccessBlock:FailureBlock:", ^{
       subjectAction(^{
            [subject signInWithUsername:@"email@domain.com"
                               Password:@"password"
                           SuccessBlock:^void(){NSLog(@"GREAT-SUCCESS");}
                           FailureBlock:^void(){NSLog(@"GREAT-FAILURE");}];
            });
        context(@"when the user/password is valid", ^{
            it(@"should update the auth token", ^{
                subject.token should equal(@"new-token");
            });
        });

    });
});

SPEC_END

クライアントは次のようになります。

#import "Client.h"
#import "AFNetworking.h"

@interface Client ()

@property (nonatomic) NSString *token;
@property (nonatomic) AFHTTPRequestOperationManager *manager;

@end

@implementation Client

- (instancetype)init
{
    self = [super init];
    self.manager = [[AFHTTPRequestOperationManager alloc] init]];
    return self;
}

- (void)signInWithUsername:(NSString *)username
                  Password:(NSString *)password
              SuccessBlock:(void (^)())successBlock
              FailureBlock:(void (^)())failureBlock;
{
    [self.manager POST:@"http://localhost:3000/auth/sign_in" 
            parameters:nil 
               success:^(AFHTTPRequestOperation *operation, id responseObject) {
                   NSLog(@"JSON: %@", responseObject);
                   successBlock();
    }         
               failure:^(AFHTTPRequestOperation *operation, NSError *error) {
                   NSLog(@"Error: %@", error);
                   failureBlock();
    }];
}

@end