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root/jsr166/jsr166/src/test/tck/AtomicLongFieldUpdaterTest.java
Revision: 1.2
Committed: Sun Sep 14 20:42:40 2003 UTC (20 years, 7 months ago) by dl
Branch: MAIN
Changes since 1.1: +1 -1 lines
Log Message: 
New base class JSR166TestCase

File Contents

# User Rev Content
1 dl 1.1 /*
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 dl 1.2 public class AtomicLongFieldUpdaterTest extends JSR166TestCase {
13 dl 1.1 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     public void testConstructor(){
27     try{
28     AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
29     a = AtomicLongFieldUpdater.newUpdater
30     (getClass(), "y");
31     fail("Exception not thrown");
32     }
33    
34     catch (RuntimeException rt) {}
35     }
36    
37     public void testConstructor2(){
38     try{
39     AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
40     a = AtomicLongFieldUpdater.newUpdater
41     (getClass(), "z");
42     fail("Exception not thrown");
43     }
44    
45     catch (RuntimeException rt) {}
46     }
47    
48     public void testConstructor3(){
49     try{
50     AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
51     a = AtomicLongFieldUpdater.newUpdater
52     (getClass(), "w");
53     fail("Exception not thrown");
54     }
55    
56     catch (RuntimeException rt) {}
57     }
58    
59     public void testGetSet(){
60     AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
61     x = 1;
62     assertEquals(1,a.get(this));
63     a.set(this,2);
64     assertEquals(2,a.get(this));
65     a.set(this,-3);
66     assertEquals(-3,a.get(this));
67    
68     }
69     public void testCompareAndSet(){
70     AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
71     x = 1;
72     assertTrue(a.compareAndSet(this,1,2));
73     assertTrue(a.compareAndSet(this,2,-4));
74     assertEquals(-4,a.get(this));
75     assertFalse(a.compareAndSet(this,-5,7));
76     assertFalse((7 == a.get(this)));
77     assertTrue(a.compareAndSet(this,-4,7));
78     assertEquals(7,a.get(this));
79     }
80    
81     public void testWeakCompareAndSet(){
82     AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
83     x = 1;
84     while(!a.weakCompareAndSet(this,1,2));
85     while(!a.weakCompareAndSet(this,2,-4));
86     assertEquals(-4,a.get(this));
87     while(!a.weakCompareAndSet(this,-4,7));
88     assertEquals(7,a.get(this));
89     }
90    
91     public void testGetAndSet(){
92     AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
93     x = 1;
94     assertEquals(1,a.getAndSet(this, 0));
95     assertEquals(0,a.getAndSet(this,-10));
96     assertEquals(-10,a.getAndSet(this,1));
97     }
98    
99     public void testGetAndAdd(){
100     AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
101     x = 1;
102     assertEquals(1,a.getAndAdd(this,2));
103     assertEquals(3,a.get(this));
104     assertEquals(3,a.getAndAdd(this,-4));
105     assertEquals(-1,a.get(this));
106     }
107    
108     public void testGetAndDecrement(){
109     AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
110     x = 1;
111     assertEquals(1,a.getAndDecrement(this));
112     assertEquals(0,a.getAndDecrement(this));
113     assertEquals(-1,a.getAndDecrement(this));
114     }
115    
116     public void testGetAndIncrement(){
117     AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
118     x = 1;
119     assertEquals(1,a.getAndIncrement(this));
120     assertEquals(2,a.get(this));
121     a.set(this,-2);
122     assertEquals(-2,a.getAndIncrement(this));
123     assertEquals(-1,a.getAndIncrement(this));
124     assertEquals(0,a.getAndIncrement(this));
125     assertEquals(1,a.get(this));
126     }
127    
128     public void testAddAndGet(){
129     AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
130     x = 1;
131     assertEquals(3,a.addAndGet(this,2));
132     assertEquals(3,a.get(this));
133     assertEquals(-1,a.addAndGet(this,-4));
134     assertEquals(-1,a.get(this));
135     }
136    
137     public void testDecrementAndGet(){
138     AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
139     x = 1;
140     assertEquals(0,a.decrementAndGet(this));
141     assertEquals(-1,a.decrementAndGet(this));
142     assertEquals(-2,a.decrementAndGet(this));
143     assertEquals(-2,a.get(this));
144     }
145    
146     public void testIncrementAndGet(){
147     AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
148     x = 1;
149     assertEquals(2,a.incrementAndGet(this));
150     assertEquals(2,a.get(this));
151     a.set(this,-2);
152     assertEquals(-1,a.incrementAndGet(this));
153     assertEquals(0,a.incrementAndGet(this));
154     assertEquals(1,a.incrementAndGet(this));
155     assertEquals(1,a.get(this));
156     }
157    
158     }