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root/jsr166/jsr166/src/test/tck/AtomicLongTest.java
Revision: 1.4
Committed: Sat Sep 20 18:20:07 2003 UTC (20 years, 7 months ago) by dl
Branch: MAIN
Changes since 1.3: +40 -2 lines
Log Message: 
Documentation scaffolding

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 junit.framework.*;
9     import java.util.concurrent.atomic.*;
10 dl 1.2 import java.io.*;
11 dl 1.1
12 dl 1.3 public class AtomicLongTest extends JSR166TestCase {
13 dl 1.1 public static void main (String[] args) {
14     junit.textui.TestRunner.run (suite());
15     }
16     public static Test suite() {
17     return new TestSuite(AtomicLongTest.class);
18     }
19    
20 dl 1.4 /**
21     *
22     */
23 dl 1.1 public void testConstructor(){
24     AtomicLong ai = new AtomicLong(1);
25     assertEquals(1,ai.get());
26     }
27    
28 dl 1.4 /**
29     *
30     */
31 dl 1.1 public void testConstructor2(){
32     AtomicLong ai = new AtomicLong();
33     assertEquals(0,ai.get());
34     }
35    
36 dl 1.4 /**
37     *
38     */
39 dl 1.1 public void testGetSet(){
40     AtomicLong ai = new AtomicLong(1);
41     assertEquals(1,ai.get());
42     ai.set(2);
43     assertEquals(2,ai.get());
44     ai.set(-3);
45     assertEquals(-3,ai.get());
46    
47     }
48 dl 1.4 /**
49     *
50     */
51 dl 1.1 public void testCompareAndSet(){
52     AtomicLong ai = new AtomicLong(1);
53     assertTrue(ai.compareAndSet(1,2));
54     assertTrue(ai.compareAndSet(2,-4));
55     assertEquals(-4,ai.get());
56     assertFalse(ai.compareAndSet(-5,7));
57     assertFalse((7 == ai.get()));
58     assertTrue(ai.compareAndSet(-4,7));
59     assertEquals(7,ai.get());
60     }
61    
62 dl 1.4 /**
63     *
64     */
65 dl 1.1 public void testWeakCompareAndSet(){
66     AtomicLong ai = new AtomicLong(1);
67     while(!ai.weakCompareAndSet(1,2));
68     while(!ai.weakCompareAndSet(2,-4));
69     assertEquals(-4,ai.get());
70     while(!ai.weakCompareAndSet(-4,7));
71     assertEquals(7,ai.get());
72     }
73    
74 dl 1.4 /**
75     *
76     */
77 dl 1.1 public void testGetAndSet(){
78     AtomicLong ai = new AtomicLong(1);
79     assertEquals(1,ai.getAndSet(0));
80     assertEquals(0,ai.getAndSet(-10));
81     assertEquals(-10,ai.getAndSet(1));
82     }
83    
84 dl 1.4 /**
85     *
86     */
87 dl 1.1 public void testGetAndAdd(){
88     AtomicLong ai = new AtomicLong(1);
89     assertEquals(1,ai.getAndAdd(2));
90     assertEquals(3,ai.get());
91     assertEquals(3,ai.getAndAdd(-4));
92     assertEquals(-1,ai.get());
93     }
94    
95 dl 1.4 /**
96     *
97     */
98 dl 1.1 public void testGetAndDecrement(){
99     AtomicLong ai = new AtomicLong(1);
100     assertEquals(1,ai.getAndDecrement());
101     assertEquals(0,ai.getAndDecrement());
102     assertEquals(-1,ai.getAndDecrement());
103     }
104    
105 dl 1.4 /**
106     *
107     */
108 dl 1.1 public void testGetAndIncrement(){
109     AtomicLong ai = new AtomicLong(1);
110     assertEquals(1,ai.getAndIncrement());
111     assertEquals(2,ai.get());
112     ai.set(-2);
113     assertEquals(-2,ai.getAndIncrement());
114     assertEquals(-1,ai.getAndIncrement());
115     assertEquals(0,ai.getAndIncrement());
116     assertEquals(1,ai.get());
117     }
118    
119 dl 1.4 /**
120     *
121     */
122 dl 1.1 public void testAddAndGet(){
123     AtomicLong ai = new AtomicLong(1);
124     assertEquals(3,ai.addAndGet(2));
125     assertEquals(3,ai.get());
126     assertEquals(-1,ai.addAndGet(-4));
127     assertEquals(-1,ai.get());
128     }
129    
130 dl 1.4 /**
131     *
132     */
133 dl 1.1 public void testDecrementAndGet(){
134     AtomicLong ai = new AtomicLong(1);
135     assertEquals(0,ai.decrementAndGet());
136     assertEquals(-1,ai.decrementAndGet());
137     assertEquals(-2,ai.decrementAndGet());
138     assertEquals(-2,ai.get());
139     }
140    
141 dl 1.4 /**
142     *
143     */
144 dl 1.1 public void testIncrementAndGet(){
145     AtomicLong ai = new AtomicLong(1);
146     assertEquals(2,ai.incrementAndGet());
147     assertEquals(2,ai.get());
148     ai.set(-2);
149     assertEquals(-1,ai.incrementAndGet());
150     assertEquals(0,ai.incrementAndGet());
151     assertEquals(1,ai.incrementAndGet());
152     assertEquals(1,ai.get());
153     }
154    
155 dl 1.4 /**
156     *
157     */
158 dl 1.2 public void testSerialization() {
159     AtomicLong l = new AtomicLong();
160    
161     try {
162     l.set(-22);
163     ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
164     ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
165     out.writeObject(l);
166     out.close();
167    
168     ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
169     ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
170     AtomicLong r = (AtomicLong) in.readObject();
171     assertEquals(l.get(), r.get());
172     } catch(Exception e){
173 dl 1.4 unexpectedException();
174 dl 1.2 }
175     }
176 dl 1.1
177     }