Mocking callNextMethod

[tschoonj]

Hi all,

I am trying to test a new class method, that overrides its parent class method (imported from another package), while simultaneously also calling it. Something like:

setMethod("my_method", "MyClass",
  function(object, arg1 = "", arg2 = "", ...) {
    # do something with arg1 and arg2, producing arg3
    
    arg3 <- process_args(arg1, arg2)
    
    callNextMethod(object, arg = arg3)
})

Now to test this, I would need to mock out the parent my_method, as it tries to establish a DB connection. Any thoughts on how I need to do this?

Thanks in advance!