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1 package org.jgroups.tests;
2
3 import junit.framework.Test;
4 import junit.framework.TestCase;
5 import junit.framework.TestSuite;
6
7 import java.util.concurrent.locks.ReentrantLock  ;
8
9
10
15 public class ReentrantLockTest extends TestCase {
16 ReentrantLock lock;
17
18 public ReentrantLockTest(String name) {
19 super(name);
20 }
21
22 public void setUp() throws Exception {
23 super.setUp();
24 lock=new ReentrantLock ();
25 }
26
27 public void tearDown() throws Exception {
28 releaseAll(lock);
29 lock=null;
30 super.tearDown();
31 }
32
33
34
35 public void testAcquireLock() {
36 lock.lock();
37 assertEquals(1, lock.getHoldCount());
38 lock.lock();
39 assertEquals(2, lock.getHoldCount());
40 release(lock);
41 assertEquals(1, lock.getHoldCount());
42 release(lock);
43 assertEquals(0, lock.getHoldCount());
44 }
45
46 public void testAcquireLock2() {
47 lock.lock();
48 assertEquals(1, lock.getHoldCount());
49 lock.lock();
50 assertEquals(2, lock.getHoldCount());
51 releaseAll(lock);
52 assertEquals(0, lock.getHoldCount());
53 }
54
55 private void release(ReentrantLock lock) {
56 if(lock != null && lock.getHoldCount() > 0)
57 lock.unlock();
58 }
59
60 private void releaseAll(ReentrantLock lock) {
61 if(lock != null) {
62 long holds=lock.getHoldCount();
63 if(holds > 0) {
64 for(int i=0; i < holds; i++)
65 lock.unlock();
66 }
67 }
68 }
69
70
71
72 public static Test suite() {
73 return new TestSuite(ReentrantLockTest.class);
74 }
75
76 public static void main(String [] args) {
77 junit.textui.TestRunner.run(ReentrantLockTest.suite());
78 }
79 }
80 |
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