/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.wicket.pageStore.memory;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import org.junit.Test;
/***/
public class PageNumberEvictionStrategyTest
{
final byte[] PAGE1 = new byte[] { 1 };
final byte[] PAGE2 = new byte[] { 2, 3 };
/***/
@Test
public void evict()
{
// evict to page table with one page only
PageNumberEvictionStrategy strategy = new PageNumberEvictionStrategy(1);
PageTable pageTable = new PageTable();
pageTable.storePage(PAGE1.length, PAGE1);
assertEquals(1, pageTable.size());
strategy.evict(pageTable);
assertEquals(1, pageTable.size());
assertNotNull(pageTable.getPage(PAGE1.length));
pageTable.storePage(PAGE2.length, PAGE2);
assertEquals(2, pageTable.size());
strategy.evict(pageTable);
assertEquals(1, pageTable.size());
assertNotNull(pageTable.getPage(PAGE2.length));
assertNull(pageTable.getPage(PAGE1.length));
}
/**
* The number of pages must be at least '1'
*/
@Test(expected = IllegalArgumentException.class)
public void greaterThanZero()
{
new PageNumberEvictionStrategy(0);
}
}