/*
 * *************************************************************************************
 *  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.collection;

import com.espertech.esper.client.EventBean;
import com.espertech.esper.support.event.SupportEventBeanFactory;
import com.espertech.esper.support.bean.SupportBean_S0;
import com.espertech.esper.support.bean.SupportBean;

import java.util.LinkedList;
import java.util.List;

import junit.framework.TestCase;

public class TestTransformEventIterator extends TestCase
{
    private TransformEventIterator iterator;

    public void testEmpty()
    {
        iterator = makeIterator(new int[0]);
        assertFalse(iterator.hasNext());
    }

    public void testOne()
    {
        iterator = makeIterator(new int[] { 10 });
        assertTrue(iterator.hasNext());
        assertEquals(10, iterator.next().get("id"));
        assertFalse(iterator.hasNext());
    }

    public void testTwo()
    {
        iterator = makeIterator(new int[] { 10, 20 });
        assertTrue(iterator.hasNext());
        assertEquals(10, iterator.next().get("id"));
        assertTrue(iterator.hasNext());
        assertEquals(20, iterator.next().get("id"));
        assertFalse(iterator.hasNext());
    }

    private TransformEventIterator makeIterator(int[] values)
    {
        List<EventBean> events = new LinkedList<EventBean>();
        for (int i = 0; i < values.length; i++)
        {
            SupportBean bean = new SupportBean();
            bean.setIntPrimitive(values[i]);
            EventBean theEvent = SupportEventBeanFactory.createObject(bean);
            events.add(theEvent);
        }
        return new TransformEventIterator(events.iterator(), new MyTransform());
    }

    public class MyTransform implements TransformEventMethod
    {
        public EventBean transform(EventBean theEvent)
        {
            Integer value = (Integer) theEvent.get("intPrimitive");
            return SupportEventBeanFactory.createObject(new SupportBean_S0(value));
        }

        public EventBean[] transform(EventBean[] events)
        {
            return new EventBean[0];
        }
    }
}