I believe this question is probably outside of the scope of SO, but I was wondering what the best practice is for testing a payment processing feature?
For any feature developed, it's been relatively easy to test, if not through unit testing than through a front-end walkthrough, but with this, I'm at a bit of a loss, as I have not done this before.
What is suggested here?
Most payment processors have a sandbox/developers account where you can process transactions in a test mode so you can fully test them as if you were in a live environment.
Testing Payment Processing Feature