public async Task DeleteMusicPlaylistAsyncShouldDeleteMusicPlaylist() { using (var context = new MusicDBContext(options)) { IMusicRepoDB _repo = new MusicRepoDB(context); MusicPlaylist testMusicPlaylist = new MusicPlaylist(); testMusicPlaylist.Id = 4; testMusicPlaylist.PlayListId = 2; testMusicPlaylist.MusicId = 1; var newMusicPlaylist = await _repo.AddMusicPlaylistAsync(testMusicPlaylist); var deleteMusicPlaylist = await _repo.DeleteMusicPlaylistAsync(testMusicPlaylist); using (var assertContext = new MusicDBContext(options)) { var result = assertContext.MusicPlaylist.Find(4); Assert.Null(result); } } }