Passing arbitrary arguments to invocked methods with Google C++ Mocking Framework (Google Mock) (V1.5)

Question

I have a mock method. When it is called, I'd like it to call another function before calling its normal behavior. Something like :

EXPECT_CALL(*my_obj, MockedMethod(_,_,_,_,_,_))
    .WillOnce(DoAll(
        Invoke(my_obj, &SomeAdditionalMethodIWantToCall),
        Invoke(my_obj, &DefaultBehavior),
        ));

The only problem is that SomeAdditionalMethodIWantToCall expects parameter that not at all related to the one provided to MockedMethod. I'd like to be able to give them but I am struggling with the syntax. I wish there was something like (in fake syntax) :

EXPECT_CALL(*my_obj, MockedMethod(_,_,_,_,_,_))
    .WillOnce(DoAll(
        Invoke(my_obj, &SomeAdditionalMethodIWantToCall, arg1, arg2, arg3),
        Invoke(my_obj, &DefaultBehavior),
        ));

I have looked for such a thing in the documentation without any success.

In Using a Function or a Functor as an Action, we have :

• Invoke(f), Invoke(object_pointer, &class::method), InvokeWithoutArgs(f), InvokeWithoutArgs(object_pointer, &class::method) which will just forward (or not) the parameter provided to the mocked function when it is called.

• InvokeArgument<N>(arg1, arg2, ..., argk) seems to be for calling one of the parameter.

In Composite Actions

• WithArg<N>(a) and WithArgs<N1, N2, ..., Nk>(a) seem to be to select which parameters from the original function get forwarded.

I guess I am missing something quite obvious but I am a bit stuck here so any suggestion will help.

Answer 1

If you are using c++11, you can use lambda-functions like this:

EXPECT_CALL(*my_obj, MockedMethod(_,_,_,_,_,_))
.WillOnce(DoAll(
    InvokeWithoutArgs([&]() { 
        my_obj->SomeAdditionalMethodIWantToCall(arg1, arg2, arg3); 
    },
    Invoke(my_obj, &DefaultBehavior)   
));