public void GenreListExistsTest()
{
var genreList = new GenreList();
genreList.Add(new Genre(1, "Name1", "Description1"));
genreList.Add(new Genre(2, "Name2", "Description2"));
genreList.Add(new Genre(3, "Name3", "Description3"));
Assert.IsFalse(genreList.Exists(0));
Assert.IsFalse(genreList.Exists(-1));
Assert.AreEqual(genreList.Exists(1), true);
Assert.AreEqual(genreList.Exists(2), true);
Assert.AreEqual(genreList.Exists(3), true);
}