test/tck/AtomicReferenceFieldUpdaterTest.java

/*
 * Written by members of JCP JSR-166 Expert Group and released to the
 * public domain. Use, modify, and redistribute this code in any way
 * without acknowledgement. Other contributors include Andrew Wright,
 * Jeffrey Hayes, Pat Fischer, Mike Judd.
 */

import java.util.concurrent.atomic.*;
import junit.framework.*;
import java.util.*;

public class AtomicReferenceFieldUpdaterTest extends JSR166TestCase{
    volatile Integer x = null;
    Object z;
    Integer w;

    public static void main(String[] args){
        junit.textui.TestRunner.run(suite());
    }

   
    public static Test suite() {
        return new TestSuite(AtomicReferenceFieldUpdaterTest.class);
    }

    public void testConstructor(){
        try{
            AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
                a = AtomicReferenceFieldUpdater.newUpdater
                (getClass(), Integer.class, "y");
            fail("Exception not thrown");
        }

        catch (RuntimeException rt) {}
    }


    public void testConstructor2(){
        try{
            AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
                a = AtomicReferenceFieldUpdater.newUpdater
                (getClass(), Integer.class, "z");
            fail("Exception not thrown");
        }

        catch (RuntimeException rt) {}
    }

    public void testConstructor3(){
        try{
            AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
                a = AtomicReferenceFieldUpdater.newUpdater
                (getClass(), Integer.class, "w");
            fail("Exception not thrown");
        }

        catch (RuntimeException rt) {}
    }

    public void testGetSet(){
        AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(getClass(), Integer.class, "x");
        x = one;
        assertEquals(one,a.get(this));
        a.set(this,two);
        assertEquals(two,a.get(this));
        a.set(this,-3);
        assertEquals(-3,a.get(this));
        
    }
    public void testCompareAndSet(){
        AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(getClass(), Integer.class, "x");
        x = one;
        assertTrue(a.compareAndSet(this,one,two));
        assertTrue(a.compareAndSet(this,two,m4));
        assertEquals(m4,a.get(this));
        assertFalse(a.compareAndSet(this,m5,seven));
        assertFalse((seven == a.get(this)));
        assertTrue(a.compareAndSet(this,m4,seven));
        assertEquals(seven,a.get(this));
    }

    public void testWeakCompareAndSet(){
        AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(getClass(), Integer.class, "x");
        x = one;
        while(!a.weakCompareAndSet(this,one,two));
        while(!a.weakCompareAndSet(this,two,m4));
        assertEquals(m4,a.get(this));
        while(!a.weakCompareAndSet(this,m4,seven));
        assertEquals(seven,a.get(this));
    }

    public void testGetAndSet(){
        AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(getClass(), Integer.class, "x");
        x = one;
        assertEquals(one,a.getAndSet(this, zero));
        assertEquals(zero,a.getAndSet(this,m10));
        assertEquals(m10,a.getAndSet(this,1));
    }

}
Revision:	1.2
Committed:	Sun Sep 14 20:42:40 2003 UTC (20 years, 7 months ago) by dl
Branch:	MAIN
Changes since 1.1:	+1 -10 lines
Log Message:	New base class JSR166TestCase
#	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 AtomicReferenceFieldUpdaterTest extends JSR166TestCase{
13	dl	1.1	volatile Integer x = null;
14			Object z;
15			Integer w;
16
17			public static void main(String[] args){
18			junit.textui.TestRunner.run(suite());
19			}
20
21
22			public static Test suite() {
23			return new TestSuite(AtomicReferenceFieldUpdaterTest.class);
24			}
25
26			public void testConstructor(){
27			try{
28			AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
29			a = AtomicReferenceFieldUpdater.newUpdater
30			(getClass(), Integer.class, "y");
31			fail("Exception not thrown");
32			}
33
34			catch (RuntimeException rt) {}
35			}
36
37
38			public void testConstructor2(){
39			try{
40			AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
41			a = AtomicReferenceFieldUpdater.newUpdater
42			(getClass(), Integer.class, "z");
43			fail("Exception not thrown");
44			}
45
46			catch (RuntimeException rt) {}
47			}
48
49			public void testConstructor3(){
50			try{
51			AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
52			a = AtomicReferenceFieldUpdater.newUpdater
53			(getClass(), Integer.class, "w");
54			fail("Exception not thrown");
55			}
56
57			catch (RuntimeException rt) {}
58			}
59
60			public void testGetSet(){
61			AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(getClass(), Integer.class, "x");
62			x = one;
63			assertEquals(one,a.get(this));
64			a.set(this,two);
65			assertEquals(two,a.get(this));
66			a.set(this,-3);
67			assertEquals(-3,a.get(this));
68
69			}
70			public void testCompareAndSet(){
71			AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(getClass(), Integer.class, "x");
72			x = one;
73			assertTrue(a.compareAndSet(this,one,two));
74			assertTrue(a.compareAndSet(this,two,m4));
75			assertEquals(m4,a.get(this));
76			assertFalse(a.compareAndSet(this,m5,seven));
77			assertFalse((seven == a.get(this)));
78			assertTrue(a.compareAndSet(this,m4,seven));
79			assertEquals(seven,a.get(this));
80			}
81
82			public void testWeakCompareAndSet(){
83			AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(getClass(), Integer.class, "x");
84			x = one;
85			while(!a.weakCompareAndSet(this,one,two));
86			while(!a.weakCompareAndSet(this,two,m4));
87			assertEquals(m4,a.get(this));
88			while(!a.weakCompareAndSet(this,m4,seven));
89			assertEquals(seven,a.get(this));
90			}
91
92			public void testGetAndSet(){
93			AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(getClass(), Integer.class, "x");
94			x = one;
95			assertEquals(one,a.getAndSet(this, zero));
96			assertEquals(zero,a.getAndSet(this,m10));
97			assertEquals(m10,a.getAndSet(this,1));
98			}
99
100			}