/*!
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program 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.
*
* Copyright (c) 2002-2013 Pentaho Corporation.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.util;
import junit.framework.Assert;
import junit.framework.TestCase;
public class RingBufferTest extends TestCase {
public RingBufferTest() {
}
public void testInvalidSize() {
try {
new RingBuffer( 0 );
Assert.fail();
} catch ( IllegalArgumentException e ) {
// ignore
}
}
public void testAdding() {
final RingBuffer<Integer> tc = new RingBuffer<Integer>( 3 );
tc.add( 10 );
tc.add( 20 );
tc.add( 30 );
tc.add( 40 );
assertEquals( 40, (int) tc.getLastValue() );
assertEquals( 20, (int) tc.getFirstValue() );
}
public void testAdding2() {
final RingBuffer<Integer> tc = new RingBuffer<Integer>( 3 );
tc.add( 10 );
tc.add( 20 );
tc.add( 30 );
assertEquals( 30, (int) tc.getLastValue() );
assertEquals( 10, (int) tc.getFirstValue() );
}
public void testReplace() {
final RingBuffer<Integer> tc = new RingBuffer<Integer>( 3 );
tc.add( 10 );
tc.add( 20 );
tc.add( 30 );
assertEquals( 30, (int) tc.getLastValue() );
assertEquals( 10, (int) tc.getFirstValue() );
tc.replaceLastAdded( 40 );
assertEquals( 40, (int) tc.getLastValue() );
assertEquals( 10, (int) tc.getFirstValue() );
tc.add( 50 );
assertEquals( 50, (int) tc.getLastValue() );
assertEquals( 20, (int) tc.getFirstValue() );
}
public void testReplaceFirst() {
final RingBuffer<Integer> tc = new RingBuffer<Integer>( 3 );
tc.replaceLastAdded( 10 );
assertEquals( 10, (int) tc.getFirstValue() );
assertEquals( 10, (int) tc.getLastValue() );
tc.add( 10 );
tc.add( 20 );
tc.add( 30 );
tc.add( 40 );
assertEquals( 40, (int) tc.getLastValue() );
assertEquals( 20, (int) tc.getFirstValue() );
}
}