Obfucating unit and connected tests from modules?

[renaudcerrato]

I've been bitten quite a few times by R8 stripping required signatures (ex. Retrofit) or by missing non-obvious rules (ex. kotlin.reflect) in production. The application is well modularized and consists of both kotlin/jvm and android library modules with test cases (connected or not).

I managed to run my application's connected tests with R8 but:

1. Obviously, the kotlin/jvm unit tests are not running obfuscated. The same goes for android modules.
2. isMinifyEnabled = true on android library modules seems ignored.

Do you have any ideas on how I'd be able to tests those under R8? My first thought would be to move those tests to a separate module and adding a dependency to it from the application module using androidTest but that sounds a bit too much.