public void FindSongsByAlbumIdTest()
{
Mock <ISongRepository> songRepository = new Mock <ISongRepository>();
Song song1 = new Song();
song1.Title = "Received song1";
song1.Id = 1;
Song song2 = new Song();
song2.Title = "Received song2";
song2.Id = 2;
songRepository.Setup(r => r.FindAllByAlbumId(1)).Returns(new List <Song>()
{
song1, song2
});
ISongService songService = new SongService(songRepository.Object, null);
Assert.AreEqual(songService.FindByAlbumId(1)[0], song1);
Assert.AreEqual(songService.FindByAlbumId(1)[1], song2);
Assert.IsTrue(songService.FindByAlbumId(1).Count == 2);
}