Cancelling orders on Google Play IAB test purchases after June 20, 2016

The easiest way to cancel an in-app purchase is to consume it. If you use the Google provided IabHelper you can just call consumeAsync and pass in the Purchase. I maintain a function to consume all the app's in-app products; this is essentially a billing reset function for testing.

What I get from the Android developer site is that they prevent the purchase flow from at all getting to the point where you have to pay for it if it is a test purchase. It makes it easier because Google makes sure you do not pay for test purchases. It stops them within 14 days. The accounts that are to do that needs testing licences that you can activate from the Developer console.

So you do not have to cancel them because technically you never purchased anything while at the same time you get to test what happens when something is bought. But the merchant center never recieves the request.

EDIT:

If you are to try to directly cancel and see what happens, do a real purchase and cancel it.