public void GetUsersFavoriteSongs()
        {
            var options = new DbContextOptionsBuilder <ApplicationDbContext>()
                          .UseInMemoryDatabase(databaseName: "InHarmonyTestControllerDB")
                          .Options;

            using (var context = new ApplicationDbContext(options))
            {
                context.Database.EnsureDeleted();
                context.Database.EnsureCreated();

                Repository         repository     = new Repository(context, _repositoryLogger);
                BusinessLogicClass logic          = new BusinessLogicClass(repository, _mapperClass, _repositoryLogger);
                SongController     songController = new SongController(logic, _songControllerLogger);
                // create a user
                var user = new User();

                // create a song
                var song = new Song();

                repository.songs.Add(song);
                repository.users.Add(user);

                // create a favorite
                var fave = new FavoriteList {
                    UserId = user.Id, SongId = song.Id
                };

                repository.favoriteLists.Add(fave);
                context.SaveChanges();

                var s = songController.GetUsersFavoriteSongs(user.Id);

                Assert.NotEmpty(s.Result);
            }
        }