/*
 * Created on May 5, 2005
 */
package stockportfolio;

import junit.framework.TestCase;

/** Test class for an ObjectDQueue
 */
public class ObjectDQueueTest extends TestCase {

    public static void testQ() {
        ObjectDQueue q1 = new ObjectDQueue();
        testOneQueue(q1);

    }

    public static void testOneQueue(ObjectDQueue q1) {
        assert q1.size() == 0;
        for (int ob = 1; ob <= 100000; ob++) {
            Object rear = new Object();
            boolean alreadyFull = q1.isFull();
            boolean enqueueResult = q1.enqueue(rear);
            if (enqueueResult) {
                assert q1.size() == ob;
                assert q1.isEmpty() == false;
                assert alreadyFull == false;
                assert rear == q1.getObject(ob-1);
                boolean addFrontResult = q1.addToFront(new Object());
                if (addFrontResult) {
                    assert q1.size() == ob + 1;
                    assert q1.isEmpty() == false;
                    alreadyFull = q1.isFull();
                    Object frontOb = q1.front();
                    assert q1.size() == ob + 1;
                    assert frontOb == q1.getObject(0);
                    assert frontOb != q1.getObject(1);
                    assert frontOb != q1.getObject(ob);
                    Object dequeued = q1.dequeue();
                    assert frontOb == dequeued;
                    assert q1.size() == ob;
                    assert frontOb != q1.getObject(0);
                } else {
                    //add front failed
                    assert alreadyFull == true;
                    assert q1.isFull() == true;
                }

            } else {
                //enqueue failed
                assert q1.isFull() == true;
                System.out.println("Queue size limit is apparently " + (ob-1));
                break;
            }
        }
        while (!q1.isEmpty()) {
            assert q1.isFull() == false;
            Object front = q1.dequeue();
            assert front != null;
        }
        Object shouldBeNull = q1.front();
        assert shouldBeNull == null;
        shouldBeNull = q1.dequeue();
        assert shouldBeNull == null;

        for (int i = 0; i < 10000; i++) {
            try {
                q1.getObject(i);
                assert false: "Unexpectedly found object at " + i;
            } catch (IllegalArgumentException e) {

            }
        }
    }

}