package examples.stack1;

import examples.stack1.StackPlus;

/**
 * Author: W. M. Farmer <BR>
 * Revised: February 11, 2007 <BR>
 * <BR>
 * Description: Tests the public methods of StackPlus.
 */
public class TestStackPlus {

    /**
     * Test StackPlus.
     */
    public static void main(String[] args) {
	printState();
	testPush(0);
	testPush(1);
	testPush(2);
	testPush(3);
	testPop();
	testPop();
	testPush(4);
	testSetTop(5);
	testReset();
	StackPlus.top();
	StackPlus.pop();
    }

    private static void printState() {
	StackPlus.print();
	System.out.println("Height = " + 
			   String.valueOf(StackPlus.height()) + 
			   ".");
	if (StackPlus.height() != 0)
	    System.out.println("Top = " +
			       String.valueOf(StackPlus.top()) +
			       ".");
	else
	    System.out.println("Top is undefined.");
	if (StackPlus.isEmpty())
	    System.out.println("Empty = true.");
	else
	    System.out.println("Empty = false.");
	System.out.println();
    }

    private static void testPush(int element) {
	StackPlus.push(element);
	System.out.println("Push " + String.valueOf(element) + ".");
	printState();
    }

    private static void testPop() {
	StackPlus.pop();
	System.out.println("Pop.");
	printState();
    }

    private static void testSetTop(int element) {
	StackPlus.setTop(element);
	System.out.println("Set top " + String.valueOf(element) + ".");
	printState();
    }

    private static void testReset() {
	StackPlus.reset();
	System.out.println("Reset.");
	printState();
    }

}