fff looks cool, too. Thanks! I'll check it out. :)

I've tended to use CMock (https://github.com/ThrowTheSwitch/CMock) for mocking, though it depends on some Ruby-based tooling. The last time I looked into replacing CMock I wound up hip-deep in the binutils. (It was fun when I stopped getting google results from StackOverflow and started getting them from Phrack, though. ;) )