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Comparing jsr166/src/test/tck/AtomicIntegerTest.java (file contents):
Revision 1.10 by dl, Wed May 25 14:27:37 2005 UTC vs.
Revision 1.15 by jsr166, Tue Nov 17 03:12:51 2009 UTC

# Line 2 | Line 2
2   * Written by Doug Lea with assistance from members of JCP JSR-166
3   * Expert Group and released to the public domain, as explained at
4   * http://creativecommons.org/licenses/publicdomain
5 < * Other contributors include Andrew Wright, Jeffrey Hayes,
6 < * Pat Fisher, Mike Judd.
5 > * Other contributors include Andrew Wright, Jeffrey Hayes,
6 > * Pat Fisher, Mike Judd.
7   */
8  
9   import junit.framework.*;
# Line 21 | Line 21 | public class AtomicIntegerTest extends J
21      /**
22       * constructor initializes to given value
23       */
24 <    public void testConstructor(){
24 >    public void testConstructor() {
25          AtomicInteger ai = new AtomicInteger(1);
26          assertEquals(1,ai.get());
27      }
# Line 29 | Line 29 | public class AtomicIntegerTest extends J
29      /**
30       * default constructed initializes to zero
31       */
32 <    public void testConstructor2(){
32 >    public void testConstructor2() {
33          AtomicInteger ai = new AtomicInteger();
34          assertEquals(0,ai.get());
35      }
36  
37      /**
38 +     * get returns the last value set
39 +     */
40 +    public void testGetSet() {
41 +        AtomicInteger ai = new AtomicInteger(1);
42 +        assertEquals(1,ai.get());
43 +        ai.set(2);
44 +        assertEquals(2,ai.get());
45 +        ai.set(-3);
46 +        assertEquals(-3,ai.get());
47 +
48 +    }
49 +
50 +    /**
51       * get returns the last value lazySet in same thread
52       */
53 <    public void testGetLazySet(){
53 >    public void testGetLazySet() {
54          AtomicInteger ai = new AtomicInteger(1);
55          assertEquals(1,ai.get());
56          ai.lazySet(2);
57          assertEquals(2,ai.get());
58          ai.lazySet(-3);
59          assertEquals(-3,ai.get());
60 <        
60 >
61      }
62      /**
63       * compareAndSet succeeds in changing value if equal to expected else fails
64       */
65 <    public void testCompareAndSet(){
65 >    public void testCompareAndSet() {
66          AtomicInteger ai = new AtomicInteger(1);
67          assertTrue(ai.compareAndSet(1,2));
68          assertTrue(ai.compareAndSet(2,-4));
# Line 64 | Line 77 | public class AtomicIntegerTest extends J
77       * compareAndSet in one thread enables another waiting for value
78       * to succeed
79       */
80 <    public void testCompareAndSetInMultipleThreads() {
80 >    public void testCompareAndSetInMultipleThreads() throws Exception {
81          final AtomicInteger ai = new AtomicInteger(1);
82          Thread t = new Thread(new Runnable() {
83                  public void run() {
84 <                    while(!ai.compareAndSet(2, 3)) Thread.yield();
84 >                    while (!ai.compareAndSet(2, 3)) Thread.yield();
85                  }});
86 <        try {
87 <            t.start();
88 <            assertTrue(ai.compareAndSet(1, 2));
89 <            t.join(LONG_DELAY_MS);
90 <            assertFalse(t.isAlive());
91 <            assertEquals(ai.get(), 3);
79 <        }
80 <        catch(Exception e) {
81 <            unexpectedException();
82 <        }
86 >
87 >        t.start();
88 >        assertTrue(ai.compareAndSet(1, 2));
89 >        t.join(LONG_DELAY_MS);
90 >        assertFalse(t.isAlive());
91 >        assertEquals(ai.get(), 3);
92      }
93  
94      /**
95       * repeated weakCompareAndSet succeeds in changing value when equal
96 <     * to expected
96 >     * to expected
97       */
98 <    public void testWeakCompareAndSet(){
98 >    public void testWeakCompareAndSet() {
99          AtomicInteger ai = new AtomicInteger(1);
100 <        while(!ai.weakCompareAndSet(1,2));
101 <        while(!ai.weakCompareAndSet(2,-4));
100 >        while (!ai.weakCompareAndSet(1,2));
101 >        while (!ai.weakCompareAndSet(2,-4));
102          assertEquals(-4,ai.get());
103 <        while(!ai.weakCompareAndSet(-4,7));
103 >        while (!ai.weakCompareAndSet(-4,7));
104          assertEquals(7,ai.get());
105      }
106  
107      /**
108       * getAndSet returns previous value and sets to given value
109       */
110 <    public void testGetAndSet(){
110 >    public void testGetAndSet() {
111          AtomicInteger ai = new AtomicInteger(1);
112          assertEquals(1,ai.getAndSet(0));
113          assertEquals(0,ai.getAndSet(-10));
# Line 108 | Line 117 | public class AtomicIntegerTest extends J
117      /**
118       * getAndAdd returns previous value and adds given value
119       */
120 <    public void testGetAndAdd(){
120 >    public void testGetAndAdd() {
121          AtomicInteger ai = new AtomicInteger(1);
122          assertEquals(1,ai.getAndAdd(2));
123          assertEquals(3,ai.get());
# Line 119 | Line 128 | public class AtomicIntegerTest extends J
128      /**
129       * getAndDecrement returns previous value and decrements
130       */
131 <    public void testGetAndDecrement(){
131 >    public void testGetAndDecrement() {
132          AtomicInteger ai = new AtomicInteger(1);
133          assertEquals(1,ai.getAndDecrement());
134          assertEquals(0,ai.getAndDecrement());
# Line 129 | Line 138 | public class AtomicIntegerTest extends J
138      /**
139       * getAndIncrement returns previous value and increments
140       */
141 <    public void testGetAndIncrement(){
141 >    public void testGetAndIncrement() {
142          AtomicInteger ai = new AtomicInteger(1);
143          assertEquals(1,ai.getAndIncrement());
144          assertEquals(2,ai.get());
# Line 143 | Line 152 | public class AtomicIntegerTest extends J
152      /**
153       * addAndGet adds given value to current, and returns current value
154       */
155 <    public void testAddAndGet(){
155 >    public void testAddAndGet() {
156          AtomicInteger ai = new AtomicInteger(1);
157          assertEquals(3,ai.addAndGet(2));
158          assertEquals(3,ai.get());
# Line 154 | Line 163 | public class AtomicIntegerTest extends J
163      /**
164       * decrementAndGet decrements and returns current value
165       */
166 <    public void testDecrementAndGet(){
166 >    public void testDecrementAndGet() {
167          AtomicInteger ai = new AtomicInteger(1);
168          assertEquals(0,ai.decrementAndGet());
169          assertEquals(-1,ai.decrementAndGet());
# Line 165 | Line 174 | public class AtomicIntegerTest extends J
174      /**
175       * incrementAndGet increments and returns current value
176       */
177 <    public void testIncrementAndGet(){
177 >    public void testIncrementAndGet() {
178          AtomicInteger ai = new AtomicInteger(1);
179          assertEquals(2,ai.incrementAndGet());
180          assertEquals(2,ai.get());
# Line 179 | Line 188 | public class AtomicIntegerTest extends J
188      /**
189       * a deserialized serialized atomic holds same value
190       */
191 <    public void testSerialization() {
191 >    public void testSerialization() throws Exception {
192          AtomicInteger l = new AtomicInteger();
193  
194 <        try {
195 <            l.set(22);
196 <            ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
197 <            ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
198 <            out.writeObject(l);
199 <            out.close();
200 <
201 <            ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
202 <            ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
203 <            AtomicInteger r = (AtomicInteger) in.readObject();
195 <            assertEquals(l.get(), r.get());
196 <        } catch(Exception e){
197 <            unexpectedException();
198 <        }
194 >        l.set(22);
195 >        ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
196 >        ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
197 >        out.writeObject(l);
198 >        out.close();
199 >
200 >        ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
201 >        ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
202 >        AtomicInteger r = (AtomicInteger) in.readObject();
203 >        assertEquals(l.get(), r.get());
204      }
205  
206      /**
207       * toString returns current value.
208 <     */
208 >     */
209      public void testToString() {
210          AtomicInteger ai = new AtomicInteger();
211          for (int i = -12; i < 6; ++i) {
# Line 211 | Line 216 | public class AtomicIntegerTest extends J
216  
217      /**
218       * intValue returns current value.
219 <     */
219 >     */
220      public void testIntValue() {
221          AtomicInteger ai = new AtomicInteger();
222          for (int i = -12; i < 6; ++i) {
# Line 223 | Line 228 | public class AtomicIntegerTest extends J
228  
229      /**
230       * longValue returns current value.
231 <     */
231 >     */
232      public void testLongValue() {
233          AtomicInteger ai = new AtomicInteger();
234          for (int i = -12; i < 6; ++i) {
# Line 234 | Line 239 | public class AtomicIntegerTest extends J
239  
240      /**
241       * floatValue returns current value.
242 <     */
242 >     */
243      public void testFloatValue() {
244          AtomicInteger ai = new AtomicInteger();
245          for (int i = -12; i < 6; ++i) {
# Line 245 | Line 250 | public class AtomicIntegerTest extends J
250  
251      /**
252       * doubleValue returns current value.
253 <     */
253 >     */
254      public void testDoubleValue() {
255          AtomicInteger ai = new AtomicInteger();
256          for (int i = -12; i < 6; ++i) {

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