/*
* @(#)$Id: OpenInt2LongLRUMapTest.java 3619 2008-03-26 07:23:03Z yui $
*
* Copyright 2006-2008 Makoto YUI
*
* Licensed 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.
*
* Contributors:
* Makoto YUI - initial implementation
*/
package xbird.util.collections.ints;
import junit.framework.TestCase;
import org.junit.Assert;
import org.junit.Test;
import xbird.util.collections.ints.Int2LongOpenHash.IMapIterator;
import xbird.util.collections.ints.Int2LongOpenHash.Int2LongOpenLRUMap;
public class OpenInt2LongLRUMapTest extends TestCase {
public OpenInt2LongLRUMapTest() {
super(OpenInt2LongLRUMapTest.class.getName());
}
@Test
public void testPut() {
final int limit = 4;
Int2LongOpenLRUMap lru = new Int2LongOpenLRUMap(4);
lru.put(0, 1L);
lru.put(1, 2L);
lru.put(2, 3L);
lru.put(3, 4L);
Assert.assertEquals(4L, lru.put(3, 5));
Assert.assertEquals(-1L, lru.put(4, 5));
Assert.assertEquals(limit, lru.size());
}
@Test
public void testGetPromotion() {
Int2LongOpenLRUMap map = new Int2LongOpenLRUMap(3);
map.put(1, 1L);
map.put(2, 2L);
map.put(3, 3L);
// eviction order is now 1,2,3
map.get(1);
// eviction order is now 2,3,1
map.put(4, 4L);
// 2 should be evicted (then 3,1,4)
int[] keys = new int[3];
int i = 0;
IMapIterator itor = map.entries();
while(itor.next() != -1) {
keys[i++] = itor.getKey();
}
Assert.assertEquals(keys[0], 3);
Assert.assertEquals(keys[1], 1);
Assert.assertEquals(keys[2], 4);
}
}