CODEWITHSUNDEEP
iosobjective-cunit-testingocmockpromisekit
tailec
tailec

Reputation: 640

OCMock stub blocks

I try to stub this AFNetworking method and test error case:

- (void)setCompletionBlockWithSuccess:(void (^)(AFHTTPRequestOperation *operation, id responseObject))success
                          failure:(void (^)(AFHTTPRequestOperation *operation, NSError *error))failure;

My test method look like:

it(@"should return error when remote api fails", ^{
    id mock = OCMClassMock([AFHTTPRequestOperation class]);
    OCMStub([mock setCompletionBlockWithSuccess:[OCMArg any] failure:[OCMArg any]]).andDo(^(NSInvocation *invocation) {
      void (^failureBlock)(AFHTTPRequestOperation *operation, NSError *error) = nil;
      [invocation getArgument:&failureBlock atIndex:3];
      NSDictionary *details = @{ NSLocalizedDescriptionKey : [OCMArg any] };
      NSError *err = [NSError errorWithDomain:@"Some Domain" code:401 userInfo:details];
      failureBlock(nil, err);         
    });
    [API getWeeklyEvents].catch(^(NSError *err) {
      error = [err copy];
    });
    expect(error).will.beTruthy();
});

Also [API getWeeklyEvents]method uses PromiseKit. Can it be an issue?

I tried to use this but it doesnt work and uses old OCMock syntax.

Upvotes: 0

Views: 608

Answers (1)

Erik Doernenburg
Erik Doernenburg

Reputation: 3014

So, you've stubbed the setCompletionBlockWithSuccess:failure: method with a block that actually calls the failure handler. This means, as far as OCMock is concerned, that nothing will happen until someone else calls setCompletionBlockWithSuccess:failure.

Now that method is an instance method and would have to be invoked on the mock. The only method that is called is getWeekEvents. I'm not sure how that would be able to call that set method because it would need a reference to the mock.

To be honest, I think you have to redesign your test.

Upvotes: 1

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