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

    /**
     *
     */
    public void testConstructor(){
        AtomicReferenceArray<Integer> ai = new AtomicReferenceArray<Integer>(SIZE);
        for (int i = 0; i < SIZE; ++i) {
            assertNull(ai.get(i));
        }
    }

    /**
     *
     */
    public void testGetSet(){
        AtomicReferenceArray ai = new AtomicReferenceArray(SIZE); 
        for (int i = 0; i < SIZE; ++i) {
            ai.set(i, one);
            assertEquals(one,ai.get(i));
            ai.set(i, two);
            assertEquals(two,ai.get(i));
            ai.set(i, m3);
            assertEquals(m3,ai.get(i));
        }
    }

    /**
     *
     */
    public void testCompareAndSet(){
        AtomicReferenceArray ai = new AtomicReferenceArray(SIZE); 
        for (int i = 0; i < SIZE; ++i) {
            ai.set(i, one);
            assertTrue(ai.compareAndSet(i, one,two));
            assertTrue(ai.compareAndSet(i, two,m4));
            assertEquals(m4,ai.get(i));
            assertFalse(ai.compareAndSet(i, m5,seven));
            assertFalse((seven.equals(ai.get(i))));
            assertTrue(ai.compareAndSet(i, m4,seven));
            assertEquals(seven,ai.get(i));
        }
    }

    /**
     *
     */
    public void testWeakCompareAndSet(){
        AtomicReferenceArray ai = new AtomicReferenceArray(SIZE); 
        for (int i = 0; i < SIZE; ++i) {
            ai.set(i, one);
            while(!ai.weakCompareAndSet(i, one,two));
            while(!ai.weakCompareAndSet(i, two,m4));
            assertEquals(m4,ai.get(i));
            while(!ai.weakCompareAndSet(i, m4,seven));
            assertEquals(seven,ai.get(i));
        }
    }

    /**
     *
     */
    public void testGetAndSet(){
        AtomicReferenceArray ai = new AtomicReferenceArray(SIZE); 
        for (int i = 0; i < SIZE; ++i) {
            ai.set(i, one);
            assertEquals(one,ai.getAndSet(i,zero));
            assertEquals(0,ai.getAndSet(i,m10));
            assertEquals(m10,ai.getAndSet(i,one));
        }
    }

    /**
     *
     */
    public void testSerialization() {
        AtomicReferenceArray l = new AtomicReferenceArray(SIZE); 
        for (int i = 0; i < SIZE; ++i) {
            l.set(i, new Integer(-i));
        }

        try {
            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));
            AtomicReferenceArray r = (AtomicReferenceArray) in.readObject();
            assertEquals(l.length(), r.length());
            for (int i = 0; i < SIZE; ++i) {
                assertEquals(r.get(i), l.get(i));
            }
        } 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:	+19 -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 AtomicReferenceArrayTest extends JSR166TestCase
13	dl	1.1	{
14			public static void main (String[] args) {
15			junit.textui.TestRunner.run (suite());
16			}
17			public static Test suite() {
18			return new TestSuite(AtomicReferenceArrayTest.class);
19			}
20
21	dl	1.4	/**
22			*
23			*/
24	dl	1.1	public void testConstructor(){
25	dl	1.3	AtomicReferenceArray<Integer> ai = new AtomicReferenceArray<Integer>(SIZE);
26			for (int i = 0; i < SIZE; ++i) {
27	dl	1.1	assertNull(ai.get(i));
28			}
29			}
30
31	dl	1.4	/**
32			*
33			*/
34	dl	1.1	public void testGetSet(){
35	dl	1.3	AtomicReferenceArray ai = new AtomicReferenceArray(SIZE);
36			for (int i = 0; i < SIZE; ++i) {
37	dl	1.1	ai.set(i, one);
38			assertEquals(one,ai.get(i));
39			ai.set(i, two);
40			assertEquals(two,ai.get(i));
41			ai.set(i, m3);
42			assertEquals(m3,ai.get(i));
43			}
44			}
45
46	dl	1.4	/**
47			*
48			*/
49	dl	1.1	public void testCompareAndSet(){
50	dl	1.3	AtomicReferenceArray ai = new AtomicReferenceArray(SIZE);
51			for (int i = 0; i < SIZE; ++i) {
52	dl	1.1	ai.set(i, one);
53			assertTrue(ai.compareAndSet(i, one,two));
54			assertTrue(ai.compareAndSet(i, two,m4));
55			assertEquals(m4,ai.get(i));
56			assertFalse(ai.compareAndSet(i, m5,seven));
57			assertFalse((seven.equals(ai.get(i))));
58			assertTrue(ai.compareAndSet(i, m4,seven));
59			assertEquals(seven,ai.get(i));
60			}
61			}
62
63	dl	1.4	/**
64			*
65			*/
66	dl	1.1	public void testWeakCompareAndSet(){
67	dl	1.3	AtomicReferenceArray ai = new AtomicReferenceArray(SIZE);
68			for (int i = 0; i < SIZE; ++i) {
69	dl	1.1	ai.set(i, one);
70			while(!ai.weakCompareAndSet(i, one,two));
71			while(!ai.weakCompareAndSet(i, two,m4));
72			assertEquals(m4,ai.get(i));
73			while(!ai.weakCompareAndSet(i, m4,seven));
74			assertEquals(seven,ai.get(i));
75			}
76			}
77
78	dl	1.4	/**
79			*
80			*/
81	dl	1.1	public void testGetAndSet(){
82	dl	1.3	AtomicReferenceArray ai = new AtomicReferenceArray(SIZE);
83			for (int i = 0; i < SIZE; ++i) {
84	dl	1.1	ai.set(i, one);
85			assertEquals(one,ai.getAndSet(i,zero));
86			assertEquals(0,ai.getAndSet(i,m10));
87			assertEquals(m10,ai.getAndSet(i,one));
88			}
89			}
90
91	dl	1.4	/**
92			*
93			*/
94	dl	1.2	public void testSerialization() {
95	dl	1.3	AtomicReferenceArray l = new AtomicReferenceArray(SIZE);
96			for (int i = 0; i < SIZE; ++i) {
97	dl	1.2	l.set(i, new Integer(-i));
98			}
99
100			try {
101			ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
102			ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
103			out.writeObject(l);
104			out.close();
105
106			ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
107			ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
108			AtomicReferenceArray r = (AtomicReferenceArray) in.readObject();
109			assertEquals(l.length(), r.length());
110	dl	1.3	for (int i = 0; i < SIZE; ++i) {
111	dl	1.2	assertEquals(r.get(i), l.get(i));
112			}
113			} catch(Exception e){
114	dl	1.4	unexpectedException();
115	dl	1.2	}
116			}
117	dl	1.1
118			}