Explanation of Solution
Significance of EPSILON argument in “assertEquals()” method:
The “assertEquals()” is given below,
//import the required packages
import org.junit.Test;
import org.junit.Assert;
//define a class CashRegisterTest
public class CashRegisterTest
{
//define the method twoPurchases()
@Test public void twoPurchases()
{
//declare the object of CashRegister
CashRegister register = new CashRegister();
//calling the method recordPurchase()
register.recordPurchase(0.75);
register.recordPurchase(1.50);
//calling the method receivePayment()
register.receivePayment(2, 0, 5, 0, 0);
//declare a variable expected
double expected = 0.25;
//call the method assertEquals()
Assert.assertEquals(expected, register.giveChange(), EPSILON);
}
// More test cases
. .
}
Explanation:
The above snippet of code is used to show how the method “assertEquals” is been called...
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