Package org.exoplatform.commons.utils

Source Code of org.exoplatform.commons.utils.TestPageListAccess

/*
* 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.AssertionFailedError;
import org.exoplatform.component.test.AbstractGateInTest;

import java.io.*;
import java.util.List;

/**
* @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a>
* @version $Revision$
*/
public class TestPageListAccess extends AbstractGateInTest
{

   private final String[] l = {"0", "1", "2", "3", "4", "5", "6"};

   public void testPageList() throws Exception
   {
      StringPageListAccess pageList = new StringPageListAccess(3, l);

      //
      assertState1(pageList);

      //
      pageList = clone(pageList);
      assertState1(pageList);

      //
      List<String> list = pageList.getPage(1);
      assertListState1(list);
      assertState1(pageList);

      //
      pageList = clone(pageList);
      list = pageList.getPage(1);
      assertListState1(list);
      assertState1(pageList);

      //
      list = pageList.getPage(2);
      assertListState2(list);
      assertState2(pageList);

      //
      pageList = clone(pageList);
      list = pageList.getPage(2);
      assertListState2(list);
      assertState2(pageList);

      //
      list = pageList.getPage(3);
      assertListState3(list);
      assertState3(pageList);

      //
      pageList = clone(pageList);
      list = pageList.getPage(3);
      assertListState3(list);
      assertState3(pageList);
   }

   private void assertListState3(List<String> list)
   {
      assertNotNull(list);
      assertEquals(1, list.size());
      assertEquals("6", list.get(0));
   }

   private void assertState3(PageList<String> list)
   {
      assertEquals(6, list.getFrom());
      assertEquals(7, list.getTo());
      assertEquals(3, list.getCurrentPage());
      assertEquals(3, list.getAvailablePage());
      assertEquals(7, list.getAvailable());
   }

   private void assertState2(PageList<String> list)
   {
      assertEquals(3, list.getFrom());
      assertEquals(6, list.getTo());
      assertEquals(2, list.getCurrentPage());
      assertEquals(3, list.getAvailablePage());
      assertEquals(7, list.getAvailable());
   }

   private void assertListState2(List<String> s)
   {
      assertNotNull(s);
      assertEquals(3, s.size());
      assertEquals("3", s.get(0));
      assertEquals("4", s.get(1));
      assertEquals("5", s.get(2));
   }

   private void assertListState1(List<String> s)
   {
      assertNotNull(s);
      assertEquals(3, s.size());
      assertEquals("0", s.get(0));
      assertEquals("1", s.get(1));
      assertEquals("2", s.get(2));
   }

   private void assertState1(PageList<String> list)
   {
      assertEquals(0, list.getFrom());
      assertEquals(3, list.getTo());
      assertEquals(1, list.getCurrentPage());
      assertEquals(3, list.getAvailablePage());
      assertEquals(7, list.getAvailable());
   }


   private StringPageListAccess clone(StringPageListAccess pageList)
   {
      try
      {
         ByteArrayOutputStream baos = new ByteArrayOutputStream();
         ObjectOutputStream oos = new ObjectOutputStream(baos);
         oos.writeObject(pageList);
         oos.close();
         ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
         ObjectInputStream ois = new ObjectInputStream(bais);
         return (StringPageListAccess)ois.readObject();
      }
      catch (Exception e)
      {
         AssertionFailedError afe = new AssertionFailedError();
         afe.initCause(e);
         throw afe;
      }
   }
}
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