public void testAddCustomer()
{
//create new customer collection
clsCustomerCollection customerList = new clsCustomerCollection();
//clear collection
customerList.clear();
//add 2 test customers
clsCustomer tstCustomer1 = new clsCustomer();
tstCustomer1.cusName = "Tester1";
clsCustomer tstCustomer2 = new clsCustomer();
tstCustomer2.cusName = "Tester2";
//create new test list
List <clsCustomer> tstList = new List <clsCustomer>();
//add 2 test customers to test list and customerList
tstList.Add(tstCustomer1);
tstList.Add(tstCustomer2);
customerList.add(tstCustomer1);
customerList.add(tstCustomer2);
//compare
Assert.AreEqual(customerList.customerAtIndex(1), tstList[1]);
}