public void Test_ZipCombine_TwoListInstances() { //Arrange CustomList <int> list = new CustomList <int>(); CustomList <int> list2 = new CustomList <int>(); CustomList <int> combinedList = new CustomList <int>(); int[] expected = { 1, 4, 2, 5, 3, 6 }; //Act list.Add(1); list.Add(2); list.Add(3); list2.Add(4); list2.Add(5); list2.Add(6); combinedList.ZipCombine(list, list2); int[] actual = combinedList.values; //Assert Assert.ReferenceEquals(expected, actual); }