/*
 * *************************************************************************************
 *  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.epl.view;

import com.espertech.esper.support.epl.SupportExprEvaluator;
import com.espertech.esper.support.event.SupportEventBeanFactory;
import com.espertech.esper.support.view.SupportMapView;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.epl.view.FilterExprView;
import junit.framework.TestCase;

public class TestFilterExprView extends TestCase
{
    private FilterExprView filterExprViewAdapter;
    private SupportMapView childView;

    public void setUp()
    {
        filterExprViewAdapter = new FilterExprView(new SupportExprEvaluator(), null);
        childView = new SupportMapView();
        filterExprViewAdapter.addView(childView);
    }

    public void testUpdate()
    {
        // Test all evaluate to true (ie. all pass the filter)
        EventBean[] oldEvents = SupportEventBeanFactory.makeEvents(new boolean[] {true, true});
        EventBean[] newEvents = SupportEventBeanFactory.makeEvents(new boolean[] {true, true});
        filterExprViewAdapter.update(newEvents, oldEvents);

        assertEquals(newEvents, childView.getLastNewData());
        assertEquals(oldEvents, childView.getLastOldData());
        childView.reset();

        // Test all evaluate to false (ie. none pass the filter)
        oldEvents = SupportEventBeanFactory.makeEvents(new boolean[] {false, false});
        newEvents = SupportEventBeanFactory.makeEvents(new boolean[] {false, false});
        filterExprViewAdapter.update(newEvents, oldEvents);

        assertFalse(childView.getAndClearIsInvoked());  // Should not be invoked if no events
        assertNull(childView.getLastNewData());
        assertNull(childView.getLastOldData());

        // Test some pass through the filter
        oldEvents = SupportEventBeanFactory.makeEvents(new boolean[] {false, true, false});
        newEvents = SupportEventBeanFactory.makeEvents(new boolean[] {true, false, true});
        filterExprViewAdapter.update(newEvents, oldEvents);

        assertEquals(2, childView.getLastNewData().length);
        assertSame(newEvents[0], childView.getLastNewData()[0]);
        assertSame(newEvents[2], childView.getLastNewData()[1]);
        assertEquals(1, childView.getLastOldData().length);
        assertSame(oldEvents[1], childView.getLastOldData()[0]);
    }
}