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Comparing jsr166/src/test/tck/AtomicReferenceFieldUpdaterTest.java (file contents):
Revision 1.13 by jsr166, Mon Nov 16 05:30:07 2009 UTC vs.
Revision 1.31 by jsr166, Wed Dec 31 19:21:20 2014 UTC

# Line 1 | Line 1
1   /*
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
4 > * http://creativecommons.org/publicdomain/zero/1.0/
5   * Other contributors include Andrew Wright, Jeffrey Hayes,
6   * Pat Fisher, Mike Judd.
7   */
8  
9 < import java.util.concurrent.atomic.*;
10 < import junit.framework.*;
11 < import java.util.*;
9 > import java.util.concurrent.atomic.AtomicReferenceFieldUpdater;
10 >
11 > import junit.framework.Test;
12 > import junit.framework.TestSuite;
13  
14   public class AtomicReferenceFieldUpdaterTest extends JSR166TestCase {
15      volatile Integer x = null;
16      Object z;
17      Integer w;
18 +    volatile int i;
19  
20      public static void main(String[] args) {
21          junit.textui.TestRunner.run(suite());
# Line 22 | Line 24 | public class AtomicReferenceFieldUpdater
24          return new TestSuite(AtomicReferenceFieldUpdaterTest.class);
25      }
26  
27 +    AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer> updaterFor(String fieldName) {
28 +        return AtomicReferenceFieldUpdater.newUpdater
29 +            (AtomicReferenceFieldUpdaterTest.class, Integer.class, fieldName);
30 +    }
31 +
32      /**
33       * Construction with non-existent field throws RuntimeException
34       */
35      public void testConstructor() {
36          try {
37 <            AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
31 <                a = AtomicReferenceFieldUpdater.newUpdater
32 <                (AtomicReferenceFieldUpdaterTest.class, Integer.class, "y");
37 >            updaterFor("y");
38              shouldThrow();
39 +        } catch (RuntimeException success) {
40 +            assertNotNull(success.getCause());
41          }
35 –        catch (RuntimeException rt) {}
42      }
43  
38 –
44      /**
45 <     * construction with field not of given type throws RuntimeException
45 >     * construction with field not of given type throws ClassCastException
46       */
47      public void testConstructor2() {
48          try {
49 <            AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
45 <                a = AtomicReferenceFieldUpdater.newUpdater
46 <                (AtomicReferenceFieldUpdaterTest.class, Integer.class, "z");
49 >            updaterFor("z");
50              shouldThrow();
51 <        }
49 <        catch (RuntimeException rt) {}
51 >        } catch (ClassCastException success) {}
52      }
53  
54      /**
55 <     * Constructor with non-volatile field throws exception
55 >     * Constructor with non-volatile field throws IllegalArgumentException
56       */
57      public void testConstructor3() {
58          try {
59 <            AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
58 <                a = AtomicReferenceFieldUpdater.newUpdater
59 <                (AtomicReferenceFieldUpdaterTest.class, Integer.class, "w");
59 >            updaterFor("w");
60              shouldThrow();
61 <        }
62 <        catch (RuntimeException rt) {}
61 >        } catch (IllegalArgumentException success) {}
62 >    }
63 >
64 >    /**
65 >     * Constructor with non-reference field throws ClassCastException
66 >     */
67 >    public void testConstructor4() {
68 >        try {
69 >            updaterFor("i");
70 >            shouldThrow();
71 >        } catch (ClassCastException success) {}
72      }
73  
74      /**
75 <     *  get returns the last value set or assigned
75 >     * get returns the last value set or assigned
76       */
77      public void testGetSet() {
78          AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a;
79 <        try {
71 <            a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
72 <        } catch (RuntimeException ok) {
73 <            return;
74 <        }
79 >        a = updaterFor("x");
80          x = one;
81 <        assertEquals(one,a.get(this));
82 <        a.set(this,two);
83 <        assertEquals(two,a.get(this));
84 <        a.set(this,m3);
85 <        assertEquals(m3,a.get(this));
81 >        assertSame(one, a.get(this));
82 >        a.set(this, two);
83 >        assertSame(two, a.get(this));
84 >        a.set(this, m3);
85 >        assertSame(m3, a.get(this));
86      }
87  
88      /**
89 <     *  get returns the last value lazySet by same thread
89 >     * get returns the last value lazySet by same thread
90       */
91      public void testGetLazySet() {
92          AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a;
93 <        try {
89 <            a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
90 <        } catch (RuntimeException ok) {
91 <            return;
92 <        }
93 >        a = updaterFor("x");
94          x = one;
95 <        assertEquals(one,a.get(this));
96 <        a.lazySet(this,two);
97 <        assertEquals(two,a.get(this));
98 <        a.lazySet(this,m3);
99 <        assertEquals(m3,a.get(this));
95 >        assertSame(one, a.get(this));
96 >        a.lazySet(this, two);
97 >        assertSame(two, a.get(this));
98 >        a.lazySet(this, m3);
99 >        assertSame(m3, a.get(this));
100      }
101  
102      /**
# Line 103 | Line 104 | public class AtomicReferenceFieldUpdater
104       */
105      public void testCompareAndSet() {
106          AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a;
107 <        try {
107 <            a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
108 <        } catch (RuntimeException ok) {
109 <            return;
110 <        }
107 >        a = updaterFor("x");
108          x = one;
109 <        assertTrue(a.compareAndSet(this,one,two));
110 <        assertTrue(a.compareAndSet(this,two,m4));
111 <        assertEquals(m4,a.get(this));
112 <        assertFalse(a.compareAndSet(this,m5,seven));
113 <        assertFalse((seven == a.get(this)));
114 <        assertTrue(a.compareAndSet(this,m4,seven));
115 <        assertEquals(seven,a.get(this));
109 >        assertTrue(a.compareAndSet(this, one, two));
110 >        assertTrue(a.compareAndSet(this, two, m4));
111 >        assertSame(m4, a.get(this));
112 >        assertFalse(a.compareAndSet(this, m5, seven));
113 >        assertFalse(seven == a.get(this));
114 >        assertTrue(a.compareAndSet(this, m4, seven));
115 >        assertSame(seven, a.get(this));
116      }
117  
118      /**
119       * compareAndSet in one thread enables another waiting for value
120       * to succeed
121       */
122 <    public void testCompareAndSetInMultipleThreads() {
122 >    public void testCompareAndSetInMultipleThreads() throws Exception {
123          x = one;
124          final AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a;
125 <        try {
129 <            a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
130 <        } catch (RuntimeException ok) {
131 <            return;
132 <        }
125 >        a = updaterFor("x");
126  
127 <        Thread t = new Thread(new Runnable() {
128 <                public void run() {
129 <                    while (!a.compareAndSet(AtomicReferenceFieldUpdaterTest.this, two, three)) Thread.yield();
130 <                }});
131 <        try {
132 <            t.start();
133 <            assertTrue(a.compareAndSet(this, one, two));
134 <            t.join(LONG_DELAY_MS);
135 <            assertFalse(t.isAlive());
136 <            assertEquals(a.get(this), three);
137 <        }
145 <        catch (Exception e) {
146 <            unexpectedException();
147 <        }
127 >        Thread t = new Thread(new CheckedRunnable() {
128 >            public void realRun() {
129 >                while (!a.compareAndSet(AtomicReferenceFieldUpdaterTest.this, two, three))
130 >                    Thread.yield();
131 >            }});
132 >
133 >        t.start();
134 >        assertTrue(a.compareAndSet(this, one, two));
135 >        t.join(LONG_DELAY_MS);
136 >        assertFalse(t.isAlive());
137 >        assertSame(three, a.get(this));
138      }
139  
140      /**
# Line 153 | Line 143 | public class AtomicReferenceFieldUpdater
143       */
144      public void testWeakCompareAndSet() {
145          AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a;
146 <        try {
157 <            a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
158 <        } catch (RuntimeException ok) {
159 <            return;
160 <        }
146 >        a = updaterFor("x");
147          x = one;
148 <        while (!a.weakCompareAndSet(this,one,two));
149 <        while (!a.weakCompareAndSet(this,two,m4));
150 <        assertEquals(m4,a.get(this));
151 <        while (!a.weakCompareAndSet(this,m4,seven));
152 <        assertEquals(seven,a.get(this));
148 >        do {} while (!a.weakCompareAndSet(this, one, two));
149 >        do {} while (!a.weakCompareAndSet(this, two, m4));
150 >        assertSame(m4, a.get(this));
151 >        do {} while (!a.weakCompareAndSet(this, m4, seven));
152 >        assertSame(seven, a.get(this));
153      }
154  
155      /**
# Line 171 | Line 157 | public class AtomicReferenceFieldUpdater
157       */
158      public void testGetAndSet() {
159          AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a;
160 <        try {
175 <            a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
176 <        } catch (RuntimeException ok) {
177 <            return;
178 <        }
160 >        a = updaterFor("x");
161          x = one;
162 <        assertEquals(one,a.getAndSet(this, zero));
163 <        assertEquals(zero,a.getAndSet(this,m10));
164 <        assertEquals(m10,a.getAndSet(this,1));
162 >        assertSame(one, a.getAndSet(this, zero));
163 >        assertSame(zero, a.getAndSet(this, m10));
164 >        assertSame(m10, a.getAndSet(this, 1));
165      }
166  
167   }

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