I have tested on my own device using the adb tool and the program seems to work ok.
I created a test account which I added inside my developer console. But When I try to log into the developer console using my test account, Google play tries to get me to pay $25 to sign up as a developer. So I think I am doing something wrong. How do I sign into my device with my test account?
Thanks!
To sign into your device with your test account, you have to do a factory data reset and then specify your test account when it boots up and asks for your account info.
A real pain in the rear when you don't have a dedicated testing device.
See Testing In-app Billing for details.