Room cannot find implementation

Question

I have a problem with testing a Room database: when I run the test, I get this exception:

java.lang.RuntimeException: cannot find implementation for databa         


        

Answer 1

In my case, adding the following annotation above the database class solves the problem.

@Database(entities = {Entities.class}, version = 1, exportSchema = false)
public abstract class TheDatabase extends RoomDatabase {...}

Thanks to @nicklocicero.