DbHelper.java

public class DbHelper extends SQLiteOpenHelper {
    @Override
    public void onCreate(SQLiteDatabase db) {
        //Datenbank initialisieren
        [...]
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        Log.d("DbHelper", "Hier ist nix zu sehen");
    }
}

Test.java

@Test
public void testOnUpgrade() throws Exception {
    SQLiteDatabase db = mock(SQLiteDatabase.class);
    dbHelper.onUpgrade(db);
    verifyZeroInteractions(db);
}