public void IntSort_Check_Index()
{
//Arrange
CustomList <int> myList1 = new CustomList <int>()
{
1, 2, 3, 7
};
CustomList <int> myList2 = new CustomList <int>()
{
4, 5, 6
};
CustomList <int> listToSort = myList1 + myList2;
int expectedResult = 4;
//Act
CustomList <int> resultList = CustomList <int> .IntSort(listToSort);
int actualResult = resultList.IndexOf(5);
//Assert
Assert.AreEqual(expectedResult, actualResult);
}