Eh, no? I've never tested payment code using real payments. Ever. The idea of doing it with real payments is pretty out there in my book even :) Then again, ev

Eh, no? I've never tested payment code using real payments. Ever. The idea of doing it with real payments is pretty out there in my book even :) Then again, every payment provider/bank I've integrated with, had decent testing end-points and we often even support them in production. i.e, you can select a staging/testing env of you provider to test order flow or whatever.