Python

Pytest can test actual hardware, make it do things so that you can qualify it. I think it makes it more transparent as well. In the open source community, we like to quote Linus' law: with enough eyeballs, all bugs or shallow. But on the other hand, if you can see a graph of this is the frequency response of the system, that makes it much easier for interested parties to actually interrogate and say, look, is this good or is it lacking?