//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//JUnit Queue Tests
//Description: Test suite for the Queue Class that uses Junit.
//CS 284
//Programmed by Jonathan Voris
//3/7/06
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
import junit.framework.TestCase;
import junit.framework.TestSuite;
import junit.framework.Test;

public class JUnitQueueTest extends TestCase
{
	private Queue emptyQ, fullQ;
	String[] testVars = {"spam", "eggs", "ham", "bacon"};

	protected void setUp()
	{
		emptyQ = new Queue();

		fullQ = new Queue();
		for (int x = 0; x < testVars.length; x++)
		{
			fullQ.insert(testVars[x]);
		}
	}

	public static Test suite()
	{
		return new TestSuite(JUnitQueueTest.class);
	}

	public static void main(String[] args)
	{
		junit.textui.TestRunner.run(suite());
	}

	public void testInitial()
	{
		assertTrue(emptyQ.getSize() == 0);
		assertTrue(emptyQ.isEmpty());
	}

	public void testInsertion()
	{
		for (int x = 0; x < testVars.length; x++)
		{
			assertTrue(emptyQ.insert(testVars[x]) == testVars[x]);
			assertTrue(emptyQ.peek() == testVars[0]);
			assertTrue(emptyQ.getSize() == x+1);
			assertFalse(emptyQ.isEmpty());
		}
	}

	public void testRemovals()
	{
		for (int x = 0; x < testVars.length-1; x++)
		{
			assertTrue(fullQ.remove() == testVars[x]);
			assertTrue(fullQ.peek() == testVars[x+1]);
			assertTrue(fullQ.getSize() == (testVars.length - (x+1)));
			assertFalse(fullQ.isEmpty());
		}
	}

	public void testPeekException()
	{
		try
		{
			emptyQ.peek();
		}
		catch (EmptyQueueException eqe)
		{
			return;
		}
		fail("Should raise an EmptyQueueException");
	}

	public void testRemoveException()
	{
		try
		{
			emptyQ.remove();
		}
		catch (EmptyQueueException eqe)
		{
			return;
		}
		fail("Should raise an EmptyQueueException");
	}
}