TestIStreamRandomAccessImpl.java

/*
 * *************************************************************************************
 *  Copyright (C) 2008 EsperTech, Inc. All rights reserved.                            *
 *  http://esper.codehaus.org                                                          *
 *  http://www.espertech.com                                                           *
 *  ---------------------------------------------------------------------------------- *
 *  The software in this package is published under the terms of the GPL license       *
 *  a copy of which has been included with this distribution in the license.txt file.  *
 * *************************************************************************************
 */

package com.espertech.esper.view.window;

import junit.framework.TestCase;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.support.bean.SupportBean;
import com.espertech.esper.support.event.SupportEventBeanFactory;

public class TestIStreamRandomAccessImpl extends TestCase
{
    private IStreamRandomAccess access;
    private EventBean[] events;

    public void setUp()
    {
        RandomAccessByIndexObserver updateObserver = new RandomAccessByIndexObserver()
        {
            public void updated(RandomAccessByIndex randomAccessByIndex)
            {
            }
        };
        access = new IStreamRandomAccess(updateObserver);
        events = new EventBean[100];
        for (int i = 0; i < events.length; i++)
        {
            events[i] = SupportEventBeanFactory.createObject(new SupportBean());
        }
    }

    public void testFlow()
    {
        assertNull(access.getNewData(0));
        assertNull(access.getOldData(0));

        access.update(new EventBean[] {events[0]}, null);
        assertEquals(events[0], access.getNewData(0));
        assertNull(access.getNewData(1));
        assertNull(access.getOldData(0));

        access.update(new EventBean[] {events[1], events[2]}, null);
        assertEquals(events[2], access.getNewData(0));
        assertEquals(events[1], access.getNewData(1));
        assertEquals(events[0], access.getNewData(2));
        assertNull(access.getNewData(3));
        assertNull(access.getOldData(0));

        access.update(new EventBean[] {events[3]}, new EventBean[] {events[0]});
        assertEquals(events[3], access.getNewData(0));
        assertEquals(events[2], access.getNewData(1));
        assertEquals(events[1], access.getNewData(2));
        assertNull(access.getNewData(3));
        assertNull(access.getOldData(0));

        access.update(null, new EventBean[] {events[1], events[2]});
        assertEquals(events[3], access.getNewData(0));
        assertNull(access.getNewData(1));
        assertNull(access.getOldData(0));

        access.update(null, new EventBean[] {events[3]});
        assertNull(access.getNewData(0));
        assertNull(access.getOldData(0));
    }
}