How to submit a test sign-up/transaction?

I’m testing on my local dev box and don’t have a live site yet (which means I don’t have an activated Stripe account yet which is what I’ll ultimately be using).

Right now I’m just trying to figure out how to properly submit test sign-ups for my different levels with the Sandbox/Testing mode, and get that to be a valid user in the database.

What information should I use when signing up in the Credit Card fields?

http://wordpress.org/extend/plugins/paid-memberships-pro/