/*
 * *************************************************************************************
 *  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.event.SupportEventBeanFactory;
import com.espertech.esper.support.bean.SupportBean;

public class TestIStreamRelativeAccessImpl extends TestCase
{
    private IStreamRelativeAccess access;
    private EventBean[] events;

    public void setUp()
    {
        IStreamRelativeAccess.IStreamRelativeAccessUpdateObserver updateObserver = new IStreamRelativeAccess.IStreamRelativeAccessUpdateObserver()
        {
            public void updated(IStreamRelativeAccess iStreamRelativeAccess, EventBean[] newData)
            {
            }
        };
        access = new IStreamRelativeAccess(updateObserver);

        events = new EventBean[100];
        for (int i = 0; i < events.length; i++)
        {
            events[i] = SupportEventBeanFactory.createObject(new SupportBean());
        }
    }

    public void testGet()
    {
        access.update(new EventBean[] {events[0]}, null);
        assertEquals(events[0], access.getRelativeToEvent(events[0], 0));
        assertNull(access.getRelativeToEvent(events[0], 1));

        // sends the newest event last (i.e. 1 older 2 as 1 is sent first)
        access.update(new EventBean[] {events[1], events[2]}, null);
        assertEquals(events[1], access.getRelativeToEvent(events[1], 0));
        assertNull(access.getRelativeToEvent(events[1], 1));
        assertEquals(events[2], access.getRelativeToEvent(events[2], 0));
        assertEquals(events[1], access.getRelativeToEvent(events[2], 1));
        assertNull(access.getRelativeToEvent(events[2], 2));

        // sends the newest event last (i.e. 1 older 2 as 1 is sent first)
        access.update(new EventBean[] {events[3], events[4], events[5]}, null);
        assertEquals(events[3], access.getRelativeToEvent(events[3], 0));
        assertNull(access.getRelativeToEvent(events[3], 1));
        assertEquals(events[4], access.getRelativeToEvent(events[4], 0));
        assertEquals(events[3], access.getRelativeToEvent(events[4], 1));
        assertNull(access.getRelativeToEvent(events[4], 2));
        assertEquals(events[5], access.getRelativeToEvent(events[5], 0));
        assertEquals(events[4], access.getRelativeToEvent(events[5], 1));
        assertEquals(events[3], access.getRelativeToEvent(events[5], 2));
        assertNull(access.getRelativeToEvent(events[5], 3));
    }
}