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root/jsr166/jsr166/src/test/tck/AtomicReferenceTest.java
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Comparing jsr166/src/test/tck/AtomicReferenceTest.java (file contents):
Revision 1.4 by dl, Sat Sep 20 18:20:07 2003 UTC vs.
Revision 1.8 by dl, Wed May 25 14:27:37 2005 UTC

# Line 1 | Line 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.
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.
7   */
8  
9   import junit.framework.*;
# Line 18 | Line 19 | public class AtomicReferenceTest extends
19      }
20  
21      /**
22 <     *
22 >     * constructor initializes to given value
23       */
24      public void testConstructor(){
25          AtomicReference ai = new AtomicReference(one);
# Line 26 | Line 27 | public class AtomicReferenceTest extends
27      }
28  
29      /**
30 <     *
30 >     * default constructed initializes to null
31       */
32      public void testConstructor2(){
33          AtomicReference ai = new AtomicReference();
# Line 34 | Line 35 | public class AtomicReferenceTest extends
35      }
36  
37      /**
38 <     *
38 >     * get returns the last value set
39       */
40      public void testGetSet(){
41          AtomicReference ai = new AtomicReference(one);
# Line 43 | Line 44 | public class AtomicReferenceTest extends
44          assertEquals(two,ai.get());
45          ai.set(m3);
46          assertEquals(m3,ai.get());
46 –        
47      }
48 +
49 +    /**
50 +     * get returns the last value lazySet in same thread
51 +     */
52 +    public void testGetLazySet(){
53 +        AtomicReference ai = new AtomicReference(one);
54 +        assertEquals(one,ai.get());
55 +        ai.lazySet(two);
56 +        assertEquals(two,ai.get());
57 +        ai.lazySet(m3);
58 +        assertEquals(m3,ai.get());
59 +    }
60 +
61      /**
62 <     *
62 >     * compareAndSet succeeds in changing value if equal to expected else fails
63       */
64      public void testCompareAndSet(){
65          AtomicReference ai = new AtomicReference(one);
# Line 60 | Line 73 | public class AtomicReferenceTest extends
73      }
74  
75      /**
76 <     *
76 >     * compareAndSet in one thread enables another waiting for value
77 >     * to succeed
78 >     */
79 >    public void testCompareAndSetInMultipleThreads() {
80 >        final AtomicReference ai = new AtomicReference(one);
81 >        Thread t = new Thread(new Runnable() {
82 >                public void run() {
83 >                    while(!ai.compareAndSet(two, three)) Thread.yield();
84 >                }});
85 >        try {
86 >            t.start();
87 >            assertTrue(ai.compareAndSet(one, two));
88 >            t.join(LONG_DELAY_MS);
89 >            assertFalse(t.isAlive());
90 >            assertEquals(ai.get(), three);
91 >        }
92 >        catch(Exception e) {
93 >            unexpectedException();
94 >        }
95 >    }
96 >
97 >    /**
98 >     * repeated weakCompareAndSet succeeds in changing value when equal
99 >     * to expected
100       */
101      public void testWeakCompareAndSet(){
102          AtomicReference ai = new AtomicReference(one);
# Line 72 | Line 108 | public class AtomicReferenceTest extends
108      }
109  
110      /**
111 <     *
111 >     * getAndSet returns previous value and sets to given value
112       */
113      public void testGetAndSet(){
114          AtomicReference ai = new AtomicReference(one);
# Line 82 | Line 118 | public class AtomicReferenceTest extends
118      }
119  
120      /**
121 <     *
121 >     * a deserialized serialized atomic holds same value
122       */
123      public void testSerialization() {
124          AtomicReference l = new AtomicReference();
# Line 103 | Line 139 | public class AtomicReferenceTest extends
139          }
140      }
141  
142 +    /**
143 +     * toString returns current value.
144 +     */
145 +    public void testToString() {
146 +        AtomicReference<Integer> ai = new AtomicReference<Integer>(one);
147 +        assertEquals(ai.toString(), one.toString());
148 +        ai.set(two);
149 +        assertEquals(ai.toString(), two.toString());
150 +    }
151 +
152   }
153  

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