/**
 * Write a description of class CashRegisterTester here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class CashRegisterTester
{
    public static final double EPSILON = 1E-10;
    
    public static void main(String[] args)
    {
        CashRegister myMoney = new CashRegister();
        myMoney.recordPurchase(100);
        myMoney.recordPurchase(10.99);
        myMoney.enterPayment(200,2,3,2,1);
        System.out.println(myMoney.giveChange());
        System.out.println("Expected: 89.92");
        myMoney.recordPurchase(12.79);
        myMoney.enterPayment(0,51,0,1,0);
        double change = myMoney.giveChange();
        System.out.println(change);
        System.out.println("Expected: 0.01");
        if (Math.abs(change - 0.01) < EPSILON)
        {
            System.out.println("Close enough!");
        }
        else
        {
            System.out.println("Error");
        }
        
    }
}