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");
            shouldThrow();
        }
        catch (RuntimeException rt) {}
    }


    /**
     *
     */
    public void testConstructor2(){
        try{
            AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
                a = AtomicReferenceFieldUpdater.newUpdater
                (getClass(), Integer.class, "z");
            shouldThrow();
        }
        catch (RuntimeException rt) {}
    }

    /**
     *
     */
    public void testConstructor3(){
        try{
            AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
                a = AtomicReferenceFieldUpdater.newUpdater
                (getClass(), Integer.class, "w");
            shouldThrow();
        }
        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:	1.3
Committed:	Sat Sep 20 18:20:07 2003 UTC (20 years, 7 months ago) by dl
Branch:	MAIN
Changes since 1.2:	+24 -6 lines
Log Message:	Documentation scaffolding
#	Content
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	public class AtomicReferenceFieldUpdaterTest extends JSR166TestCase{
13	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	/**
27	*
28	*/
29	public void testConstructor(){
30	try{
31	AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
32	a = AtomicReferenceFieldUpdater.newUpdater
33	(getClass(), Integer.class, "y");
34	shouldThrow();
35	}
36	catch (RuntimeException rt) {}
37	}
38
39
40	/**
41	*
42	*/
43	public void testConstructor2(){
44	try{
45	AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
46	a = AtomicReferenceFieldUpdater.newUpdater
47	(getClass(), Integer.class, "z");
48	shouldThrow();
49	}
50	catch (RuntimeException rt) {}
51	}
52
53	/**
54	*
55	*/
56	public void testConstructor3(){
57	try{
58	AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
59	a = AtomicReferenceFieldUpdater.newUpdater
60	(getClass(), Integer.class, "w");
61	shouldThrow();
62	}
63	catch (RuntimeException rt) {}
64	}
65
66	/**
67	*
68	*/
69	public void testGetSet(){
70	AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(getClass(), Integer.class, "x");
71	x = one;
72	assertEquals(one,a.get(this));
73	a.set(this,two);
74	assertEquals(two,a.get(this));
75	a.set(this,-3);
76	assertEquals(-3,a.get(this));
77
78	}
79	/**
80	*
81	*/
82	public void testCompareAndSet(){
83	AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(getClass(), Integer.class, "x");
84	x = one;
85	assertTrue(a.compareAndSet(this,one,two));
86	assertTrue(a.compareAndSet(this,two,m4));
87	assertEquals(m4,a.get(this));
88	assertFalse(a.compareAndSet(this,m5,seven));
89	assertFalse((seven == a.get(this)));
90	assertTrue(a.compareAndSet(this,m4,seven));
91	assertEquals(seven,a.get(this));
92	}
93
94	/**
95	*
96	*/
97	public void testWeakCompareAndSet(){
98	AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(getClass(), Integer.class, "x");
99	x = one;
100	while(!a.weakCompareAndSet(this,one,two));
101	while(!a.weakCompareAndSet(this,two,m4));
102	assertEquals(m4,a.get(this));
103	while(!a.weakCompareAndSet(this,m4,seven));
104	assertEquals(seven,a.get(this));
105	}
106
107	/**
108	*
109	*/
110	public void testGetAndSet(){
111	AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(getClass(), Integer.class, "x");
112	x = one;
113	assertEquals(one,a.getAndSet(this, zero));
114	assertEquals(zero,a.getAndSet(this,m10));
115	assertEquals(m10,a.getAndSet(this,1));
116	}
117
118	}