/***********************************************************************
 * >>>>>> TESTER for class ShoppingList --- This code is complete <<<<<<
 *
 * --------------- Below is the output from this tester ----------------
 * Shopping list = apples
 * Shopping list = apples, spam
 * Shopping list = apples, spam, broccoli
 * Shopping list = apples, broccoli
 * Shopping list = apples, broccoli
 * Shopping list = apples
 * Shopping list = apples
 * Shopping list = apples, Twinkies
 * Shopping list = Twinkies
 * Shopping list =
 * Shopping list = Cheez Whiz
 * Shopping list = Cheez Whiz, bread
 * Shopping list = Cheez Whiz
 * Shopping list = Cheez Whiz
 *****************************************************************/
public class ShoppingListTester
{
   public static void check(ShoppingList list, String check) {
       System.out.print("shopping list = "+list);

       if (list.toString().equals(check)) {
           System.out.println(" <<CORRECT>>");
        }
        else {
           System.out.println(" <<ERROR!>>");
        }

   }

   public static void main(String args[])
   {
       ShoppingList Creech = new ShoppingList("");
       Creech.addItem("apples");
       check(Creech,"apples");
       Creech.addItem("spam");
       check(Creech,"apples, spam");
       Creech.addItem("broccoli");
       check(Creech,"apples, spam, broccoli");
       Creech.removeItem("spam");
       check(Creech,"apples, broccoli");
       Creech.addItem("apples");
       check(Creech,"apples, broccoli");
       Creech.removeItem("broccoli");
       check(Creech,"apples");
       Creech.removeItem("chicken");
       check(Creech,"apples");
       Creech.addItem("Twinkies");
       check(Creech,"apples, Twinkies");
       Creech.removeItem("apples");
       check(Creech,"Twinkies");
       Creech.removeItem("Twinkies");
       check(Creech,"");
       Creech.addItem("Cheez Whiz");
       check(Creech,"Cheez Whiz");
       Creech.addItem("bread");
       check(Creech,"Cheez Whiz, bread");
       Creech.removeItem("bread");
       check(Creech,"Cheez Whiz");
       Creech.removeItem("Twinkies");
       check(Creech,"Cheez Whiz");
    }
}