A memo on how to test in-app purchases in debug build for Android app development.

I haven’t tried this yet, but according to the linked article, you can change the build key to the release build key and create a signed APK build.

・Android デバッグビルドでもアプリ内課金をテストするには？ » Tech Blog

With this method, it should be possible to test payment processing with a DEBUG build using “Alpha Testing” or “Beta Testing” on the Google Play Store.

That’s all from the Gemba.