title: Android in-app billing error with android.test.purchased item
body: <p>I'm trying to test my in app purchase flow with the fake item android.test.purchased, from android documentation. I'm not able to test this flow, just when I launch it, I get this error: "The item you requested is not available for purchase". I have the  permission in my manifest and I don't understand why I get this error with the fake item android.test.purchased.</p>