could you go into more detail? Do you want know where the callbacks are defined/declared in the source code? Or do you want locations in the binaries? Or just the name of the callback? C++ or Python? At runtime or at compile time?

Perhaps you could talk a bit more about what you want to accomplish.

Hi, I need map the publications and callbacks from the topics of an application. So I need of a better form of know where the callbacks are defined in the source code. I am working with C++ and Python languages.

I still do not understand what you want to do. Do you want to do this at runtime or at compile time? I recommend that you briefly describe how that would play into the new testing method (by editing your original question)

Thank you. That made things more clear. What I can tell you, is that this has nothing to do with ros per se. Since subscription and advertising happens at runtime, you can not determine this mapping from static code analysis. Can you make any assumptions about the code of the node? Can you edit it?