public void GetArtists()
        {
            // Arrange
            var db = new FakeArtistCatalogDbContext();

            db.AddSet(TestData.Artists);
            var repository = new FakeArtistCatalogRepository(db);

            // Act
            var artists = repository.GetArtists().ToList();

            //Assert
            Assert.AreEqual(true, artists.ToList().Count == 10);
        }
        public void GetArtistsById()
        {
            // Arrange
            var db = new FakeArtistCatalogDbContext();

            db.AddSet(TestData.Artists);
            var repository = new FakeArtistCatalogRepository(db);

            // Act
            Guid ArtistId = Guid.NewGuid();
            var  artist   = repository.GetArtist(ArtistId);

            //Assert
            Assert.AreEqual(true, artist != null);
        }