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
17package com.google.common.hash;
18
19import static com.google.common.hash.Hashing.murmur3_32;
20
21import com.google.common.hash.Funnels;
22import com.google.common.hash.HashTestUtils.HashFn;
23
24import junit.framework.TestCase;
25
26/**
27 * Tests for Murmur3Hash32.
28 */
29public class Murmur3Hash32Test extends TestCase {
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