public void TestAChoosingShortestLine()
{
var c1 = new Cashier(1);
c1.EnqueueCustomer(new CustomerA(1, 10));
c1.EnqueueCustomer(new CustomerB(2, 100));
c1.EnqueueCustomer(new CustomerA(3, 8));
var c2 = new Cashier(2);
c2.EnqueueCustomer(new CustomerB(2, 10));
c2.EnqueueCustomer(new CustomerB(2, 15));
var c3 = new CashierTrainee(3);
c3.EnqueueCustomer(new CustomerA(1, 9999));
var cashiers = new HashSet <ICashier> {
c1, c2, c3
};
var c = new CustomerA(3, 1);
var chosenCashier = c.ChooseCashier(cashiers);
Assert.AreEqual(c3, chosenCashier);
}
public void TestNullCashiers()
{
var noCashiers = new HashSet <ICashier>();
var custA = new CustomerA(1, 10);
var chosenA = custA.ChooseCashier(noCashiers);
Assert.IsNull(chosenA);
var custB = new CustomerA(1, 10);
var chosenB = custB.ChooseCashier(noCashiers);
Assert.IsNull(chosenB);
}
public static Customer CreateCustomer(string customerLine)
{
if (string.IsNullOrWhiteSpace(customerLine))
{
return(null);
}
string[] tokens = customerLine.Split(SplitChars);
if (tokens.Length < 3)
{
return(null);
}
int arrivalTime;
if (!int.TryParse(tokens[1], out arrivalTime))
{
return(null);
}
int cartCount;
if (!int.TryParse(tokens[2], out cartCount))
{
return(null);
}
Customer customer;
if (tokens[0] == "A")
{
customer = new CustomerA(arrivalTime, cartCount);
}
else if (tokens[0] == "B")
{
customer = new CustomerB(arrivalTime, cartCount);
}
else
{
return(null);
}
return(customer);
}
public static Customer CreateCustomer(string customerLine)
{
if (string.IsNullOrWhiteSpace(customerLine)) return null;
string[] tokens = customerLine.Split(SplitChars);
if (tokens.Length < 3) return null;
int arrivalTime;
if (!int.TryParse(tokens[1], out arrivalTime)) return null;
int cartCount;
if (!int.TryParse(tokens[2], out cartCount)) return null;
Customer customer;
if (tokens[0] == "A")
{
customer = new CustomerA(arrivalTime, cartCount);
}
else if (tokens[0] == "B")
{
customer = new CustomerB(arrivalTime, cartCount);
}
else return null;
return customer;
}