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root/jsr166/jsr166/src/test/tck/AtomicLongFieldUpdaterTest.java
Revision: 1.3
Committed: Sat Sep 20 18:20:07 2003 UTC (20 years, 7 months ago) by dl
Branch: MAIN
Changes since 1.2: +42 -5 lines
Log Message: 
Documentation scaffolding

File Contents

# Content
1 /*
2 * Written by members of JCP JSR-166 Expert Group and released to the
3 * public domain. Use, modify, and redistribute this code in any way
4 * without acknowledgement. Other contributors include Andrew Wright,
5 * Jeffrey Hayes, Pat Fischer, Mike Judd.
6 */
7
8 import java.util.concurrent.atomic.*;
9 import junit.framework.*;
10 import java.util.*;
11
12 public class AtomicLongFieldUpdaterTest extends JSR166TestCase {
13 volatile long x = 0;
14 long z;
15 int w;
16
17 public static void main(String[] args){
18 junit.textui.TestRunner.run(suite());
19 }
20
21
22 public static Test suite() {
23 return new TestSuite(AtomicLongFieldUpdaterTest.class);
24 }
25
26 /**
27 *
28 */
29 public void testConstructor(){
30 try{
31 AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
32 a = AtomicLongFieldUpdater.newUpdater
33 (getClass(), "y");
34 shouldThrow();
35 }
36 catch (RuntimeException rt) {}
37 }
38
39 /**
40 *
41 */
42 public void testConstructor2(){
43 try{
44 AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
45 a = AtomicLongFieldUpdater.newUpdater
46 (getClass(), "z");
47 shouldThrow();
48 }
49 catch (RuntimeException rt) {}
50 }
51
52 /**
53 *
54 */
55 public void testConstructor3(){
56 try{
57 AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
58 a = AtomicLongFieldUpdater.newUpdater
59 (getClass(), "w");
60 shouldThrow();
61 }
62
63 catch (RuntimeException rt) {}
64 }
65
66 /**
67 *
68 */
69 public void testGetSet(){
70 AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
71 x = 1;
72 assertEquals(1,a.get(this));
73 a.set(this,2);
74 assertEquals(2,a.get(this));
75 a.set(this,-3);
76 assertEquals(-3,a.get(this));
77
78 }
79 /**
80 *
81 */
82 public void testCompareAndSet(){
83 AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
84 x = 1;
85 assertTrue(a.compareAndSet(this,1,2));
86 assertTrue(a.compareAndSet(this,2,-4));
87 assertEquals(-4,a.get(this));
88 assertFalse(a.compareAndSet(this,-5,7));
89 assertFalse((7 == a.get(this)));
90 assertTrue(a.compareAndSet(this,-4,7));
91 assertEquals(7,a.get(this));
92 }
93
94 /**
95 *
96 */
97 public void testWeakCompareAndSet(){
98 AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
99 x = 1;
100 while(!a.weakCompareAndSet(this,1,2));
101 while(!a.weakCompareAndSet(this,2,-4));
102 assertEquals(-4,a.get(this));
103 while(!a.weakCompareAndSet(this,-4,7));
104 assertEquals(7,a.get(this));
105 }
106
107 /**
108 *
109 */
110 public void testGetAndSet(){
111 AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
112 x = 1;
113 assertEquals(1,a.getAndSet(this, 0));
114 assertEquals(0,a.getAndSet(this,-10));
115 assertEquals(-10,a.getAndSet(this,1));
116 }
117
118 /**
119 *
120 */
121 public void testGetAndAdd(){
122 AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
123 x = 1;
124 assertEquals(1,a.getAndAdd(this,2));
125 assertEquals(3,a.get(this));
126 assertEquals(3,a.getAndAdd(this,-4));
127 assertEquals(-1,a.get(this));
128 }
129
130 /**
131 *
132 */
133 public void testGetAndDecrement(){
134 AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
135 x = 1;
136 assertEquals(1,a.getAndDecrement(this));
137 assertEquals(0,a.getAndDecrement(this));
138 assertEquals(-1,a.getAndDecrement(this));
139 }
140
141 /**
142 *
143 */
144 public void testGetAndIncrement(){
145 AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
146 x = 1;
147 assertEquals(1,a.getAndIncrement(this));
148 assertEquals(2,a.get(this));
149 a.set(this,-2);
150 assertEquals(-2,a.getAndIncrement(this));
151 assertEquals(-1,a.getAndIncrement(this));
152 assertEquals(0,a.getAndIncrement(this));
153 assertEquals(1,a.get(this));
154 }
155
156 /**
157 *
158 */
159 public void testAddAndGet(){
160 AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
161 x = 1;
162 assertEquals(3,a.addAndGet(this,2));
163 assertEquals(3,a.get(this));
164 assertEquals(-1,a.addAndGet(this,-4));
165 assertEquals(-1,a.get(this));
166 }
167
168 /**
169 *
170 */
171 public void testDecrementAndGet(){
172 AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
173 x = 1;
174 assertEquals(0,a.decrementAndGet(this));
175 assertEquals(-1,a.decrementAndGet(this));
176 assertEquals(-2,a.decrementAndGet(this));
177 assertEquals(-2,a.get(this));
178 }
179
180 /**
181 *
182 */
183 public void testIncrementAndGet(){
184 AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
185 x = 1;
186 assertEquals(2,a.incrementAndGet(this));
187 assertEquals(2,a.get(this));
188 a.set(this,-2);
189 assertEquals(-1,a.incrementAndGet(this));
190 assertEquals(0,a.incrementAndGet(this));
191 assertEquals(1,a.incrementAndGet(this));
192 assertEquals(1,a.get(this));
193 }
194
195 }