Android Marshmallow: Test permissions with Espresso?

Question

The new permissions scheme introduced by Android Marshmallow requires checking for specific permissions at runtime, which implies the need to provide different flows dependi

Answer 1

I've implemented a solution which leverages wrapper classes, overriding and build variant configuration. The solution is quite long to explain and is found over here: https://github.com/ahasbini/AndroidTestMockPermissionUtils.

It is not yet packed in an sdk but the main idea is to override the functionalities of ContextWrapper.checkSelfPermission and ActivityCompat.requestPermissions to be manipulated and return mocked results tricking the app into the different scenarios to be tested like: permission was denied hence the app requested it and ended with granted permission. This scenario will occur even if the app had the permission all along but the idea is that it was tricked by the mocked results from the overriding implementation.

Furthermore the implementation has a TestRule called PermissionRule class which can be used in the test classes to easily simulate all of the conditions to test the permissions seamlessly. Also assertions can be made like ensuring the app has called requestPermissions() for example.