public async Task GetArtists_2ValidArtists_ArtistIdsMatch()
        {
            // arrange
            string[] artistIds = new[] { "1tpXaFf2F55E7kVJON4j4G", "0oSGxfWSnnOXhD2fKuz2Gy" };

            var http     = new HttpClient();
            var accounts = new AccountsService(http, TestsHelper.GetLocalConfig());
            var artists  = new ArtistsApi(http, accounts);

            // act
            var result = await artists.GetArtists(artistIds);

            // assert
            Assert.AreEqual(artistIds[0], result[0].Id);
            Assert.AreEqual(artistIds[1], result[1].Id);
        }