> It's a faint smell, but I was under the impression that could not bother you. ;-)

Smell is witchcraft, straight from the pits of Hell. 

> I thought of some other ways to do this, but they all seemed way more complex than just putting a module in the src tree. It's all "just code" in the end.

Fair enough. A comment at the top of the file explaining its purpose as test data would be nice.