CashRegisterTest.java.html

  1  import org.junit.Test;
  2  import org.junit.Assert;
  3  
  4  public class CashRegisterTest
  5  {
  6     private static final double EPSILON = 1E-12;
  7  
  8     @Test public void twoPurchases()
  9     {
 10        CashRegister register = new CashRegister();
 11        register.recordPurchase(0.75);
 12        register.recordPurchase(1.50);
 13        register.receivePayment(2, 0, 5, 0, 0);
 14        double expected = 0.25;
 15        Assert.assertEquals(expected, register.giveChange(), EPSILON);
 16     }
 17  
 18     @Test public void testZeroBalance() 
 19     {
 20        CashRegister register = new CashRegister();
 21        register.recordPurchase(2.25);
 22        register.recordPurchase(19.25);
 23        register.receivePayment(21, 2, 0, 0, 0);
 24        Assert.assertEquals(0, register.giveChange(), EPSILON);
 25     }
 26  
 27     // More test cases 
 28     // . . .
 29  }