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); }