test/tck/AtomicReferenceTest.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 junit.framework.*;
import java.util.concurrent.atomic.*;
import java.io.*;

public class AtomicReferenceTest extends JSR166TestCase {
    public static void main (String[] args) {
        junit.textui.TestRunner.run (suite());
    }
    public static Test suite() {
        return new TestSuite(AtomicReferenceTest.class);
    }

    /**
     *
     */
    public void testConstructor(){
        AtomicReference ai = new AtomicReference(one);
        assertEquals(one,ai.get());
    }

    /**
     *
     */
    public void testConstructor2(){
        AtomicReference ai = new AtomicReference();
        assertNull(ai.get());
    }

    /**
     *
     */
    public void testGetSet(){
        AtomicReference ai = new AtomicReference(one);
        assertEquals(one,ai.get());
        ai.set(two);
        assertEquals(two,ai.get());
        ai.set(m3);
        assertEquals(m3,ai.get());
        
    }
    /**
     *
     */
    public void testCompareAndSet(){
        AtomicReference ai = new AtomicReference(one);
        assertTrue(ai.compareAndSet(one,two));
        assertTrue(ai.compareAndSet(two,m4));
        assertEquals(m4,ai.get());
        assertFalse(ai.compareAndSet(m5,seven));
        assertFalse((seven.equals(ai.get())));
        assertTrue(ai.compareAndSet(m4,seven));
        assertEquals(seven,ai.get());
    }

    /**
     *
     */
    public void testWeakCompareAndSet(){
        AtomicReference ai = new AtomicReference(one);
        while(!ai.weakCompareAndSet(one,two));
        while(!ai.weakCompareAndSet(two,m4));
        assertEquals(m4,ai.get());
        while(!ai.weakCompareAndSet(m4,seven));
        assertEquals(seven,ai.get());
    }

    /**
     *
     */
    public void testGetAndSet(){
        AtomicReference ai = new AtomicReference(one);
        assertEquals(one,ai.getAndSet(zero));
        assertEquals(zero,ai.getAndSet(m10));
        assertEquals(m10,ai.getAndSet(one));
    }

    /**
     *
     */
    public void testSerialization() {
        AtomicReference l = new AtomicReference();

        try {
            l.set(one);
            ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
            ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
            out.writeObject(l);
            out.close();

            ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
            ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
            AtomicReference r = (AtomicReference) in.readObject();
            assertEquals(l.get(), r.get());
        } catch(Exception e){
            unexpectedException();
        }
    }

}

Revision:	1.4
Committed:	Sat Sep 20 18:20:07 2003 UTC (20 years, 7 months ago) by dl
Branch:	MAIN
Changes since 1.3:	+22 -2 lines
Log Message:	Documentation scaffolding
#	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 junit.framework.*;
9			import java.util.concurrent.atomic.*;
10	dl	1.2	import java.io.*;
11	dl	1.1
12	dl	1.3	public class AtomicReferenceTest extends JSR166TestCase {
13	dl	1.1	public static void main (String[] args) {
14			junit.textui.TestRunner.run (suite());
15			}
16			public static Test suite() {
17			return new TestSuite(AtomicReferenceTest.class);
18			}
19
20	dl	1.4	/**
21			*
22			*/
23	dl	1.1	public void testConstructor(){
24			AtomicReference ai = new AtomicReference(one);
25			assertEquals(one,ai.get());
26			}
27
28	dl	1.4	/**
29			*
30			*/
31	dl	1.1	public void testConstructor2(){
32			AtomicReference ai = new AtomicReference();
33			assertNull(ai.get());
34			}
35
36	dl	1.4	/**
37			*
38			*/
39	dl	1.1	public void testGetSet(){
40			AtomicReference ai = new AtomicReference(one);
41			assertEquals(one,ai.get());
42			ai.set(two);
43			assertEquals(two,ai.get());
44			ai.set(m3);
45			assertEquals(m3,ai.get());
46
47			}
48	dl	1.4	/**
49			*
50			*/
51	dl	1.1	public void testCompareAndSet(){
52			AtomicReference ai = new AtomicReference(one);
53			assertTrue(ai.compareAndSet(one,two));
54			assertTrue(ai.compareAndSet(two,m4));
55			assertEquals(m4,ai.get());
56			assertFalse(ai.compareAndSet(m5,seven));
57			assertFalse((seven.equals(ai.get())));
58			assertTrue(ai.compareAndSet(m4,seven));
59			assertEquals(seven,ai.get());
60			}
61
62	dl	1.4	/**
63			*
64			*/
65	dl	1.1	public void testWeakCompareAndSet(){
66			AtomicReference ai = new AtomicReference(one);
67			while(!ai.weakCompareAndSet(one,two));
68			while(!ai.weakCompareAndSet(two,m4));
69			assertEquals(m4,ai.get());
70			while(!ai.weakCompareAndSet(m4,seven));
71			assertEquals(seven,ai.get());
72			}
73
74	dl	1.4	/**
75			*
76			*/
77	dl	1.1	public void testGetAndSet(){
78			AtomicReference ai = new AtomicReference(one);
79			assertEquals(one,ai.getAndSet(zero));
80			assertEquals(zero,ai.getAndSet(m10));
81			assertEquals(m10,ai.getAndSet(one));
82	dl	1.2	}
83
84	dl	1.4	/**
85			*
86			*/
87	dl	1.2	public void testSerialization() {
88			AtomicReference l = new AtomicReference();
89
90			try {
91			l.set(one);
92			ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
93			ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
94			out.writeObject(l);
95			out.close();
96
97			ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
98			ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
99			AtomicReference r = (AtomicReference) in.readObject();
100			assertEquals(l.get(), r.get());
101			} catch(Exception e){
102	dl	1.4	unexpectedException();
103	dl	1.2	}
104	dl	1.1	}
105
106			}
107