/*
* JBoss, Home of Professional Open Source
* Copyright 2011 Red Hat Inc. and/or its affiliates and other
* contributors as indicated by the @author tags. All rights reserved.
* See the copyright.txt in the distribution for a full listing of
* individual contributors.
*
* 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.infinispan.util;
import org.infinispan.commons.hash.Hash;
import org.infinispan.commons.hash.MurmurHash2;
import org.infinispan.commons.hash.MurmurHash2Compat;
import org.infinispan.commons.hash.MurmurHash3;
import org.infinispan.test.AbstractInfinispanTest;
import org.testng.annotations.Test;
@Test(testName = "util.HashFunctionTest", groups = "unit")
public class HashFunctionTest extends AbstractInfinispanTest {
public void testMurmurHash2Consistency() {
testHashConsistency(new MurmurHash2());
}
public void testMurmurHash2CompatConsistency() {
testHashConsistency(new MurmurHash2Compat());
}
public void testMurmurHash3Consistency() {
testHashConsistency(new MurmurHash3());
}
private void testHashConsistency(Hash hash) {
Object o = new Object();
int i1 = hash.hash(o);
int i2 = hash.hash(o);
int i3 = hash.hash(o);
assert i1 == i2: "i1 and i2 are not the same: " + i1 + ", " + i2;
assert i3 == i2: "i3 and i2 are not the same: " + i2 + ", " + i3;
assert i1 == i3: "i1 and i3 are not the same: " + i1 + ", " + i3;
}
}