package org.infinispan.commons.hash;
import java.util.Random;
import org.junit.Assert;
import org.junit.Test;
/**
* @author Dan Berindei
* @since 9.0
*/
public class MurmurHash3StringCompatTest {
private static final long NUM_KEYS = 100000;
private static final int MAX_KEY_SIZE = 5;
@Test
public void compareHashes() {
Random random = new Random(9005);
for (int i = 0; i < NUM_KEYS; i++) {
int cpLen = Math.abs(random.nextInt(MAX_KEY_SIZE) - random.nextInt(MAX_KEY_SIZE)) + 1;
int[] codePoints = random.ints(cpLen, 0, 0x110000).filter(Character::isDefined).toArray();
String s = new String(codePoints, 0, codePoints.length);
testString(s);
}
}
private void testString(String s) {
int h1 = MurmurHash3Old.getInstance().hash(s);
int h2 = MurmurHash3.getInstance().hash(s);
Assert.assertEquals(h1, h2);
}
}