1 /* 2 * Copyright (C) 2011 The Guava Authors 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.common.hash; 18 19 import static com.google.common.hash.Hashing.murmur3_32; 20 21 import com.google.common.hash.Funnels; 22 import com.google.common.hash.HashTestUtils.HashFn; 23 24 import junit.framework.TestCase; 25 26 /** 27 * Tests for Murmur3Hash32. 28 */ 29 public class Murmur3Hash32Test extends TestCase { testParanoid()30 public void testParanoid() { 31 HashFn hf = new HashFn() { 32 @Override public byte[] hash(byte[] input, int seed) { 33 Hasher hasher = murmur3_32(seed).newHasher(); 34 Funnels.byteArrayFunnel().funnel(input, hasher); 35 return hasher.hash().asBytes(); 36 } 37 }; 38 // the magic number comes from: 39 // http://code.google.com/p/smhasher/source/browse/trunk/main.cpp, #72 40 HashTestUtils.verifyHashFunction(hf, 32, 0xB0F57EE3); 41 } 42 } 43