Testing initialisation with arguments

[DanBennettDev]

So far as I can tell the test wrapper provided doesn't support initialising your objects with arguments - test_wrapper constructor is calling the constructor for wrapper_new with nullptr for the argument array. This makes it a difficult to test externals with substantial initialisation processes.

It's possible I'm being dumb here and there's an easy way around this. I tried adding a constructor (as below) that takes args to the test_wrapper, but when I follow execution in the debugger this still seems to result in my external's class constructor being called with 0 arguments - so there's obviously a fair bit I'm missing here.

test_wrapper(atoms& args = {}) {
    m_minwrap_obj = wrapper_new<min_class_type>(symbol("dummy"), args.size(), &args[0]);
}

[tap]

Thanks @DanBennettDev -- The plumbing for the unit testing is the largest area with room for growth and improvement.

One thing that might be confusing in the debugger is that 2 instances of your object will be created. The first one is a "dummy" construction where an instance is created, information from it is harvested to create the Max class, and then it is destroyed. This only happens once. Then the real instance to be used gets created.

That's a great point about us having no examples of unit tests where args are being passed.

[DanBennettDev]

ok thanks - I'll go back and dig into the test code a bit more deeply.

[leico]

I find this issue, now I would like to test arguments.
So, in my environment, this code looks works fine.

in c74_min_unittest.h

        test_wrapper() {
            m_minwrap_obj = wrapper_new<min_class_type>(symbol("dummy"), 0, nullptr);
        }
      
        // constructor overload
        test_wrapper(const atoms& vec_args){
          max::t_atom args[ vec_args.size() ];
          for( std :: size_t i = 0, end = vec_args.size() ; i < end ; ++ i)
            args[i] = vec_args[i];
          m_minwrap_obj = wrapper_new<min_class_type>(symbol("dummy"), vec_args.size(), args); // Would "dummy" needs to become other name?
        }

in *_test.cpp

test_wrapper<Test.args_object> an_instance({"aaa", 10, 2.5});

If it looks good, I can send a pull request.

[leico]

Ah...yes, I found a dummy class.... on c74_min_object_wrapper.hpp

[tap]

Hi @leico ,

If you would like to submit a Pull Request I'd be happy to review it!

Thanks,
Tim