public void TestID34_FilterByLastName() { CustomerList TestList = new CustomerList(); TestList.CustList = TestCustomerList.FilterByLastName(SearchLastName); if (TestList.CustList.Count != FilterByLastName_expectedResult.Length) { Assert.Fail("Too many or too few customers found."); } else { for (int i = 0; i < FilterByLastName_expectedResult.Length; i++) { Assert.IsTrue(FilterByLastName_expectedResult.Contains(TestList.CustList[i].CustomerNumber)); } } }