TestIterablesArrayIterator.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.collection;

import com.espertech.esper.client.EventBean;
import com.espertech.esper.client.scopetest.EPAssertionUtil;
import com.espertech.esper.support.event.EventFactoryHelper;
import junit.framework.TestCase;

import java.util.Map;

public class TestIterablesArrayIterator extends TestCase
{
    private Map<String, EventBean> events;

    public void setUp()
    {
        events = EventFactoryHelper.makeEventMap(new String[] {"a", "b", "c", "d", "e", "f", "g", "h", "i", "z"});
    }

    public void testIterator()
    {
        Iterable<EventBean>[] iterables = new Iterable[1];
        iterables[0] = EventFactoryHelper.makeList(events, new String[] { "a", "b", "c" } );
        checkResults(iterables, EventFactoryHelper.makeArray(events, new String[] { "a", "b", "c" }));

        iterables = new Iterable[3];
        iterables[0] = EventFactoryHelper.makeList(events, new String[] { "a" } );
        iterables[1] = EventFactoryHelper.makeList(events, new String[] { "b" } );
        iterables[2] = EventFactoryHelper.makeList(events, new String[] { "c" } );
        checkResults(iterables, EventFactoryHelper.makeArray(events, new String[] { "a", "b", "c" }));

        iterables = new Iterable[2];
        iterables[0] = EventFactoryHelper.makeList(events, new String[] { "a", "b" } );
        iterables[1] = EventFactoryHelper.makeList(events, new String[] { "c" } );
        checkResults(iterables, EventFactoryHelper.makeArray(events, new String[] { "a", "b", "c" }));

        iterables = new Iterable[5];
        iterables[0] = EventFactoryHelper.makeList(events, new String[] { } );
        iterables[1] = EventFactoryHelper.makeList(events, new String[] { "a", "b" } );
        iterables[2] = EventFactoryHelper.makeList(events, new String[] { } );
        iterables[3] = EventFactoryHelper.makeList(events, new String[] { "c" } );
        iterables[4] = EventFactoryHelper.makeList(events, new String[] { } );
        checkResults(iterables, EventFactoryHelper.makeArray(events, new String[] { "a", "b", "c" }));

        iterables = new Iterable[1];
        iterables[0] = EventFactoryHelper.makeList(events, new String[] { } );
        checkResults(iterables, null);

        iterables = new Iterable[3];
        iterables[0] = EventFactoryHelper.makeList(events, new String[] { } );
        iterables[1] = EventFactoryHelper.makeList(events, new String[] { } );
        iterables[2] = EventFactoryHelper.makeList(events, new String[] { } );
        checkResults(iterables, null);

        iterables = new Iterable[4];
        iterables[0] = EventFactoryHelper.makeList(events, new String[] { } );
        iterables[1] = EventFactoryHelper.makeList(events, new String[] { } );
        iterables[2] = EventFactoryHelper.makeList(events, new String[] { } );
        iterables[3] = EventFactoryHelper.makeList(events, new String[] { "d" } );
        checkResults(iterables, EventFactoryHelper.makeArray(events, new String[] { "d" } ));

        iterables = new Iterable[4];
        iterables[0] = EventFactoryHelper.makeList(events, new String[] { "d" } );
        iterables[1] = EventFactoryHelper.makeList(events, new String[] { } );
        iterables[2] = EventFactoryHelper.makeList(events, new String[] { } );
        iterables[3] = EventFactoryHelper.makeList(events, new String[] { } );
        checkResults(iterables, EventFactoryHelper.makeArray(events, new String[] { "d" } ));

        iterables = new Iterable[8];
        iterables[0] = EventFactoryHelper.makeList(events, new String[] { "a", "b", "c" } );
        iterables[1] = EventFactoryHelper.makeList(events, new String[] { "d" } );
        iterables[2] = EventFactoryHelper.makeList(events, new String[] { } );
        iterables[3] = EventFactoryHelper.makeList(events, new String[] { "e", "f" } );
        iterables[4] = EventFactoryHelper.makeList(events, new String[] { "g" } );
        iterables[5] = EventFactoryHelper.makeList(events, new String[] { } );
        iterables[6] = EventFactoryHelper.makeList(events, new String[] { "h", "i" } );
        iterables[7] = EventFactoryHelper.makeList(events, new String[] { "z" } );
        checkResults(iterables, EventFactoryHelper.makeArray(events, new String[] { "a", "b", "c", "d", "e", "f", "g", "h", "i", "z" }));

        iterables = new Iterable[0];
        checkResults(iterables, null);
    }

    public void testRemove()
    {
        Iterable<EventBean>[] iterables = new Iterable[1];
        iterables[0] = EventFactoryHelper.makeList(events, new String[] { "a", "b", "c" } );
        IterablesArrayIterator iterator = new IterablesArrayIterator(iterables);

        try
        {
            iterator.remove();
            assertTrue(false);
        }
        catch (UnsupportedOperationException ex)
        {
            // Expected
        }
    }

    private void checkResults(Iterable<EventBean>[] iterables, EventBean[] expectedValues)
    {
        IterablesArrayIterator iterator = new IterablesArrayIterator(iterables);
        EPAssertionUtil.assertEqualsExactOrder(expectedValues, iterator);
    }
}