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root/jsr166/jsr166/src/test/tck/AtomicIntegerFieldUpdaterTest.java
Revision: 1.2
Committed: Sun Sep 14 20:42:40 2003 UTC (20 years, 8 months ago) by dl
Branch: MAIN
Changes since 1.1: +12 -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 AtomicIntegerFieldUpdaterTest extends JSR166TestCase {
13 dl 1.1 volatile int x = 0;
14 dl 1.2 long z;
15 dl 1.1
16     public static void main(String[] args){
17     junit.textui.TestRunner.run(suite());
18     }
19    
20    
21     public static Test suite() {
22     return new TestSuite(AtomicIntegerFieldUpdaterTest.class);
23     }
24    
25     public void testConstructor(){
26     try{
27     AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest>
28     a = AtomicIntegerFieldUpdater.newUpdater
29     (getClass(), "y");
30 dl 1.2 fail("Exception not thrown");
31     }
32     catch (RuntimeException rt) {}
33     }
34    
35     public void testConstructor2(){
36     try{
37     AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest>
38     a = AtomicIntegerFieldUpdater.newUpdater
39     (getClass(), "z");
40 dl 1.1 fail("Exception not thrown");
41     }
42     catch (RuntimeException rt) {}
43     }
44    
45     public void testGetSet(){
46     AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(getClass(), "x");
47     x = 1;
48     assertEquals(1,a.get(this));
49     a.set(this,2);
50     assertEquals(2,a.get(this));
51     a.set(this,-3);
52     assertEquals(-3,a.get(this));
53    
54     }
55     public void testCompareAndSet(){
56     AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(getClass(), "x");
57     x = 1;
58     assertTrue(a.compareAndSet(this,1,2));
59     assertTrue(a.compareAndSet(this,2,-4));
60     assertEquals(-4,a.get(this));
61     assertFalse(a.compareAndSet(this,-5,7));
62     assertFalse((7 == a.get(this)));
63     assertTrue(a.compareAndSet(this,-4,7));
64     assertEquals(7,a.get(this));
65     }
66    
67     public void testWeakCompareAndSet(){
68     AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(getClass(), "x");
69     x = 1;
70     while(!a.weakCompareAndSet(this,1,2));
71     while(!a.weakCompareAndSet(this,2,-4));
72     assertEquals(-4,a.get(this));
73     while(!a.weakCompareAndSet(this,-4,7));
74     assertEquals(7,a.get(this));
75     }
76    
77     public void testGetAndSet(){
78     AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(getClass(), "x");
79     x = 1;
80     assertEquals(1,a.getAndSet(this, 0));
81     assertEquals(0,a.getAndSet(this,-10));
82     assertEquals(-10,a.getAndSet(this,1));
83     }
84    
85     public void testGetAndAdd(){
86     AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(getClass(), "x");
87     x = 1;
88     assertEquals(1,a.getAndAdd(this,2));
89     assertEquals(3,a.get(this));
90     assertEquals(3,a.getAndAdd(this,-4));
91     assertEquals(-1,a.get(this));
92     }
93    
94     public void testGetAndDecrement(){
95     AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(getClass(), "x");
96     x = 1;
97     assertEquals(1,a.getAndDecrement(this));
98     assertEquals(0,a.getAndDecrement(this));
99     assertEquals(-1,a.getAndDecrement(this));
100     }
101    
102     public void testGetAndIncrement(){
103     AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(getClass(), "x");
104     x = 1;
105     assertEquals(1,a.getAndIncrement(this));
106     assertEquals(2,a.get(this));
107     a.set(this,-2);
108     assertEquals(-2,a.getAndIncrement(this));
109     assertEquals(-1,a.getAndIncrement(this));
110     assertEquals(0,a.getAndIncrement(this));
111     assertEquals(1,a.get(this));
112     }
113    
114     public void testAddAndGet(){
115     AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(getClass(), "x");
116     x = 1;
117     assertEquals(3,a.addAndGet(this,2));
118     assertEquals(3,a.get(this));
119     assertEquals(-1,a.addAndGet(this,-4));
120     assertEquals(-1,a.get(this));
121     }
122    
123     public void testDecrementAndGet(){
124     AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(getClass(), "x");
125     x = 1;
126     assertEquals(0,a.decrementAndGet(this));
127     assertEquals(-1,a.decrementAndGet(this));
128     assertEquals(-2,a.decrementAndGet(this));
129     assertEquals(-2,a.get(this));
130     }
131    
132     public void testIncrementAndGet(){
133     AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(getClass(), "x");
134     x = 1;
135     assertEquals(2,a.incrementAndGet(this));
136     assertEquals(2,a.get(this));
137     a.set(this,-2);
138     assertEquals(-1,a.incrementAndGet(this));
139     assertEquals(0,a.incrementAndGet(this));
140     assertEquals(1,a.incrementAndGet(this));
141     assertEquals(1,a.get(this));
142     }
143    
144     }