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Using OCMockito to mock methods that are void

In using OCMockito, the below works great:

DSAPIManager *mockAPIManager = mock([DSAPIManager class]);
[given([mockAPIManager initWithBaseURL:[mockAPIManager baseURL]]) willReturn:[DSAPIManager sharedAPIManager]];

However when I try the same thing on a method with multiple arguments (see code below), I get an "Argument type 'void' is incomplete' compiler error.

DSAPIManager *mockAPIManager = mock([DSAPIManager class]);
[given([mockAPIManager setLoginCredentialsWithEmail:@""
                                           password:@""]) willReturn:@""];

Does anyone know the right way to go about this?

Edit

My original intent in asking this question was to resolve an issue of getting a compiler error when I try the following:

[given([mockAPIManager setLoginCredentialsWithEmail:@"" password:@""]) willDo:^id(NSInvocation *invocation) {
        // Mock implementation goes here
}];

The method signature of the method I'm trying to mock is:

- (void)setLoginCredentialsWithEmail:(NSString *)email password:(NSString *)password;

What I'm actually trying to do is to mock out the implementation of a void method. (Given a void method, mock out the implementation of the method with a block. For my purposes the method returns a completion block, that takes in two arguments. I would like to construct those two arguments and then run the completion block inside of the mocked out implementation block.)

Solution

  • OCMockito doesn't yet support stubbing of void methods. That's because until willThrow: and willDo: came along, there was no need. It will be added as a feature soon. You can track progress in https://github.com/jonreid/OCMockito/pull/93