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1
4 package com.tc.object.lockmanager.api;
5
6 import java.util.Random  ;
7
8 import junit.framework.TestCase;
9
10 public class LockRequestTest extends TestCase {
11 public void testEqualsAndHashCode() throws Exception {
12 Random random = new Random ();
13 int instanceCount = 1000000;
14
15 LockRequest notEqual = new LockRequest(new LockID("nothing like me"), new ThreadID(Integer.MAX_VALUE),
16 LockLevel.WRITE);
17 long[] samples = new long[instanceCount];
18 for (int i = 0; i < instanceCount; i++) {
19 LockID lid = new LockID(random.nextInt(Integer.MAX_VALUE - 1) + "");
20 ThreadID tid = new ThreadID(random.nextInt(Integer.MAX_VALUE - 1));
21 int lockType = (i % 2 == 0) ? LockLevel.READ : LockLevel.WRITE;
22
23 long t0 = System.currentTimeMillis();
24 LockRequest a = new LockRequest(lid, tid, lockType);
25 samples[i] = System.currentTimeMillis() - t0;
26
27 LockRequest b = new LockRequest(new LockID(lid.asString()), new ThreadID(tid.toLong()), lockType);
28 assertEquals(a, b);
29 assertEquals(a.hashCode(), b.hashCode());
30 assertFalse(a.equals(notEqual));
31 assertFalse(b.equals(notEqual));
32 }
33 long min = 0, max = 0, sum = 0;
34 for (int i = 0; i < samples.length; i++) {
35 if (samples[i] < min) min = samples[i];
36 if (samples[i] > max) max = samples[i];
37 sum += samples[i];
38 }
39 double mean = sum / samples.length;
40 System.out.println("min: " + min + ", max: " + max + ", mean: " + mean);
41 }
42 }
43 |
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