/*
* Copyright (C) 2009 eXo Platform SAS.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.exoplatform.commons.utils;
import junit.framework.TestCase;
import org.exoplatform.commons.exception.ExoMessageException;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
/**
* @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a>
* @version $Revision$
*/
public class TestPageList extends TestCase
{
public TestPageList()
{
}
public TestPageList(String s)
{
super(s);
}
private final List<String> l = Collections.unmodifiableList(Arrays.asList("0", "1", "2", "3", "4", "5", "6"));
public void testObjectPageList() throws Exception
{
ObjectPageList<String> list = new ObjectPageList<String>(l, 3);
testBehavior(list);
}
public void testLazyList() throws Exception
{
ListAccess<String> list = new ListAccess<String>()
{
public String[] load(int index, int length) throws Exception, IllegalArgumentException
{
return l.subList(index, index + length).toArray(new String[length]);
}
public int getSize() throws Exception
{
return l.size();
}
};
testBehavior(new LazyPageList<String>(list, 3));
}
public void testBehavior(PageList list) throws Exception
{
// Initial state
assertEquals(0, list.getFrom());
assertEquals(3, list.getTo());
assertEquals(1, list.getCurrentPage());
assertEquals(3, list.getAvailablePage());
assertEquals(7, list.getAvailable());
//
List<String> s;
//
s = list.getPage(1);
assertNotNull(s);
assertEquals(3, s.size());
assertEquals("0", s.get(0));
assertEquals("1", s.get(1));
assertEquals("2", s.get(2));
assertEquals(0, list.getFrom());
assertEquals(3, list.getTo());
assertEquals(1, list.getCurrentPage());
assertEquals(3, list.getAvailablePage());
assertEquals(7, list.getAvailable());
//
s = list.getPage(2);
assertNotNull(s);
assertEquals(3, s.size());
assertEquals("3", s.get(0));
assertEquals("4", s.get(1));
assertEquals("5", s.get(2));
assertEquals(3, list.getFrom());
assertEquals(6, list.getTo());
assertEquals(2, list.getCurrentPage());
assertEquals(3, list.getAvailablePage());
assertEquals(7, list.getAvailable());
//
s = list.getPage(3);
assertNotNull(s);
assertEquals(1, s.size());
assertEquals("6", s.get(0));
assertEquals(6, list.getFrom());
assertEquals(7, list.getTo());
assertEquals(3, list.getCurrentPage());
assertEquals(3, list.getAvailablePage());
assertEquals(7, list.getAvailable());
//
try
{
list.getPage(4);
fail();
}
catch (ExoMessageException e)
{
}
//
try
{
list.getPage(0);
fail();
}
catch (ExoMessageException e)
{
}
//
try
{
list.getPage(-1);
fail();
}
catch (ExoMessageException e)
{
}
}
}