I have added my email id to the android in-app purchase testing account.
But When I am going to test the in-app purchase in to android device with this email id account, it is opening to ask to buy with the credit card details and purchase. So I am confused that how can I test the app in proper manner? Am I missing something to test?
Unfortunately to test in-app billing you actually have to buy your item. Aside from static responses using fake item IDs there’s no way to test the purchase with “fake money”.
The good news is you can go into your merchant account and immediately issue yourself a refund, so you’ll never actually be charged.