test/tck/AtomicIntegerArrayTest.java

/*
 * Written by Doug Lea with assistance from members of JCP JSR-166
 * Expert Group and released to the public domain, as explained at
 * http://creativecommons.org/licenses/publicdomain
 * Other contributors include Andrew Wright, Jeffrey Hayes,
 * Pat Fisher, Mike Judd.
 */

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

public class AtomicIntegerArrayTest extends JSR166TestCase {

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


    /**
     * constructor creates array of given size with all elements zero
     */
    public void testConstructor() {
        AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
        for (int i = 0; i < SIZE; ++i)
            assertEquals(0,ai.get(i));
    }

    /**
     * constructor with null array throws NPE
     */
    public void testConstructor2NPE() {
        try {
            int[] a = null;
            AtomicIntegerArray ai = new AtomicIntegerArray(a);
            shouldThrow();
        } catch (NullPointerException success) {}
    }

    /**
     * constructor with array is of same size and has all elements
     */
    public void testConstructor2() {
        int[] a = { 17, 3, -42, 99, -7};
        AtomicIntegerArray ai = new AtomicIntegerArray(a);
        assertEquals(a.length, ai.length());
        for (int i = 0; i < a.length; ++i)
            assertEquals(a[i], ai.get(i));
    }

    /**
     * get and set for out of bound indices throw IndexOutOfBoundsException
     */
    public void testIndexing() {
        AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
        try {
            ai.get(SIZE);
            shouldThrow();
        } catch (IndexOutOfBoundsException success) {
        }
        try {
            ai.get(-1);
            shouldThrow();
        } catch (IndexOutOfBoundsException success) {
        }
        try {
            ai.set(SIZE, 0);
            shouldThrow();
        } catch (IndexOutOfBoundsException success) {
        }
        try {
            ai.set(-1, 0);
            shouldThrow();
        } catch (IndexOutOfBoundsException success) {
        }
    }

    /**
     * get returns the last value set at index
     */
    public void testGetSet() {
        AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
        for (int i = 0; i < SIZE; ++i) {
            ai.set(i, 1);
            assertEquals(1,ai.get(i));
            ai.set(i, 2);
            assertEquals(2,ai.get(i));
            ai.set(i, -3);
            assertEquals(-3,ai.get(i));
        }
    }

    /**
     * get returns the last value lazySet at index by same thread
     */
    public void testGetLazySet() {
        AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
        for (int i = 0; i < SIZE; ++i) {
            ai.lazySet(i, 1);
            assertEquals(1,ai.get(i));
            ai.lazySet(i, 2);
            assertEquals(2,ai.get(i));
            ai.lazySet(i, -3);
            assertEquals(-3,ai.get(i));
        }
    }

    /**
     * compareAndSet succeeds in changing value if equal to expected else fails
     */
    public void testCompareAndSet() {
        AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
        for (int i = 0; i < SIZE; ++i) {
            ai.set(i, 1);
            assertTrue(ai.compareAndSet(i, 1,2));
            assertTrue(ai.compareAndSet(i, 2,-4));
            assertEquals(-4,ai.get(i));
            assertFalse(ai.compareAndSet(i, -5,7));
            assertFalse((7 == ai.get(i)));
            assertTrue(ai.compareAndSet(i, -4,7));
            assertEquals(7,ai.get(i));
        }
    }

    /**
     * compareAndSet in one thread enables another waiting for value
     * to succeed
     */
    public void testCompareAndSetInMultipleThreads() throws Exception {
        final AtomicIntegerArray a = new AtomicIntegerArray(1);
        a.set(0, 1);
        Thread t = new Thread(new Runnable() {
                public void run() {
                    while (!a.compareAndSet(0, 2, 3)) Thread.yield();
                }});

        t.start();
        assertTrue(a.compareAndSet(0, 1, 2));
        t.join(LONG_DELAY_MS);
        assertFalse(t.isAlive());
        assertEquals(a.get(0), 3);
    }

    /**
     * repeated weakCompareAndSet succeeds in changing value when equal
     * to expected
     */
    public void testWeakCompareAndSet() {
        AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
        for (int i = 0; i < SIZE; ++i) {
            ai.set(i, 1);
            while (!ai.weakCompareAndSet(i, 1,2));
            while (!ai.weakCompareAndSet(i, 2,-4));
            assertEquals(-4,ai.get(i));
            while (!ai.weakCompareAndSet(i, -4,7));
            assertEquals(7,ai.get(i));
        }
    }

    /**
     *  getAndSet returns previous value and sets to given value at given index
     */
    public void testGetAndSet() {
        AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
        for (int i = 0; i < SIZE; ++i) {
            ai.set(i, 1);
            assertEquals(1,ai.getAndSet(i,0));
            assertEquals(0,ai.getAndSet(i,-10));
            assertEquals(-10,ai.getAndSet(i,1));
        }
    }

    /**
     *  getAndAdd returns previous value and adds given value
     */
    public void testGetAndAdd() {
        AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
        for (int i = 0; i < SIZE; ++i) {
            ai.set(i, 1);
            assertEquals(1,ai.getAndAdd(i,2));
            assertEquals(3,ai.get(i));
            assertEquals(3,ai.getAndAdd(i,-4));
            assertEquals(-1,ai.get(i));
        }
    }

    /**
     * getAndDecrement returns previous value and decrements
     */
    public void testGetAndDecrement() {
        AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
        for (int i = 0; i < SIZE; ++i) {
            ai.set(i, 1);
            assertEquals(1,ai.getAndDecrement(i));
            assertEquals(0,ai.getAndDecrement(i));
            assertEquals(-1,ai.getAndDecrement(i));
        }
    }

    /**
     * getAndIncrement returns previous value and increments
     */
    public void testGetAndIncrement() {
        AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
        for (int i = 0; i < SIZE; ++i) {
            ai.set(i, 1);
            assertEquals(1,ai.getAndIncrement(i));
            assertEquals(2,ai.get(i));
            ai.set(i,-2);
            assertEquals(-2,ai.getAndIncrement(i));
            assertEquals(-1,ai.getAndIncrement(i));
            assertEquals(0,ai.getAndIncrement(i));
            assertEquals(1,ai.get(i));
        }
    }

    /**
     *  addAndGet adds given value to current, and returns current value
     */
    public void testAddAndGet() {
        AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
        for (int i = 0; i < SIZE; ++i) {
            ai.set(i, 1);
            assertEquals(3,ai.addAndGet(i,2));
            assertEquals(3,ai.get(i));
            assertEquals(-1,ai.addAndGet(i,-4));
            assertEquals(-1,ai.get(i));
        }
    }

    /**
     * decrementAndGet decrements and returns current value
     */
    public void testDecrementAndGet() {
        AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
        for (int i = 0; i < SIZE; ++i) {
            ai.set(i, 1);
            assertEquals(0,ai.decrementAndGet(i));
            assertEquals(-1,ai.decrementAndGet(i));
            assertEquals(-2,ai.decrementAndGet(i));
            assertEquals(-2,ai.get(i));
        }
    }

    /**
     *  incrementAndGet increments and returns current value
     */
    public void testIncrementAndGet() {
        AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
        for (int i = 0; i < SIZE; ++i) {
            ai.set(i, 1);
            assertEquals(2,ai.incrementAndGet(i));
            assertEquals(2,ai.get(i));
            ai.set(i, -2);
            assertEquals(-1,ai.incrementAndGet(i));
            assertEquals(0,ai.incrementAndGet(i));
            assertEquals(1,ai.incrementAndGet(i));
            assertEquals(1,ai.get(i));
        }
    }

    static final int COUNTDOWN = 100000;

    class Counter implements Runnable {
        final AtomicIntegerArray ai;
        volatile int counts;
        Counter(AtomicIntegerArray a) { ai = a; }
        public void run() {
            for (;;) {
                boolean done = true;
                for (int i = 0; i < ai.length(); ++i) {
                    int v = ai.get(i);
                    threadAssertTrue(v >= 0);
                    if (v != 0) {
                        done = false;
                        if (ai.compareAndSet(i, v, v-1))
                            ++counts;
                    }
                }
                if (done)
                    break;
            }
        }
    }

    /**
     * Multiple threads using same array of counters successfully
     * update a number of times equal to total count
     */
    public void testCountingInMultipleThreads() throws InterruptedException {
        final AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
        for (int i = 0; i < SIZE; ++i)
            ai.set(i, COUNTDOWN);
        Counter c1 = new Counter(ai);
        Counter c2 = new Counter(ai);
        Thread t1 = new Thread(c1);
        Thread t2 = new Thread(c2);
        t1.start();
        t2.start();
        t1.join();
        t2.join();
        assertEquals(c1.counts+c2.counts, SIZE * COUNTDOWN);
    }


    /**
     * a deserialized serialized array holds same values
     */
    public void testSerialization() throws Exception {
        AtomicIntegerArray l = new AtomicIntegerArray(SIZE);
        for (int i = 0; i < SIZE; ++i)
            l.set(i, -i);

        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));
        AtomicIntegerArray r = (AtomicIntegerArray) in.readObject();
        for (int i = 0; i < SIZE; ++i) {
            assertEquals(l.get(i), r.get(i));
        }
    }


    /**
     * toString returns current value.
     */
    public void testToString() {
        int[] a = { 17, 3, -42, 99, -7};
        AtomicIntegerArray ai = new AtomicIntegerArray(a);
        assertEquals(Arrays.toString(a), ai.toString());
    }

}
Revision:	1.14
Committed:	Tue Nov 17 02:37:16 2009 UTC (14 years, 5 months ago) by jsr166
Branch:	MAIN
Changes since 1.13:	+37 -49 lines
Log Message:	clean up exception handling; add missing shouldThrows
#	User	Rev	Content
1	dl	1.1	/*
2	dl	1.6	* 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
5	jsr166	1.11	* Other contributors include Andrew Wright, Jeffrey Hayes,
6			* Pat Fisher, Mike Judd.
7	dl	1.1	*/
8
9			import junit.framework.*;
10			import java.util.concurrent.atomic.*;
11	dl	1.2	import java.io.*;
12	dl	1.9	import java.util.*;
13	dl	1.1
14	dl	1.3	public class AtomicIntegerArrayTest extends JSR166TestCase {
15	dl	1.1
16			public static void main (String[] args) {
17			junit.textui.TestRunner.run (suite());
18			}
19			public static Test suite() {
20			return new TestSuite(AtomicIntegerArrayTest.class);
21			}
22
23	dl	1.3
24	dl	1.4	/**
25	dl	1.5	* constructor creates array of given size with all elements zero
26	dl	1.4	*/
27			public void testConstructor() {
28	dl	1.3	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
29	jsr166	1.11	for (int i = 0; i < SIZE; ++i)
30	dl	1.1	assertEquals(0,ai.get(i));
31			}
32
33	dl	1.4	/**
34	dl	1.7	* constructor with null array throws NPE
35			*/
36			public void testConstructor2NPE() {
37			try {
38			int[] a = null;
39			AtomicIntegerArray ai = new AtomicIntegerArray(a);
40	jsr166	1.14	shouldThrow();
41			} catch (NullPointerException success) {}
42	dl	1.7	}
43
44			/**
45			* constructor with array is of same size and has all elements
46			*/
47			public void testConstructor2() {
48			int[] a = { 17, 3, -42, 99, -7};
49			AtomicIntegerArray ai = new AtomicIntegerArray(a);
50			assertEquals(a.length, ai.length());
51	jsr166	1.11	for (int i = 0; i < a.length; ++i)
52	dl	1.7	assertEquals(a[i], ai.get(i));
53			}
54
55			/**
56	dl	1.5	* get and set for out of bound indices throw IndexOutOfBoundsException
57			*/
58	jsr166	1.13	public void testIndexing() {
59	dl	1.5	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
60			try {
61			ai.get(SIZE);
62	jsr166	1.14	shouldThrow();
63	jsr166	1.13	} catch (IndexOutOfBoundsException success) {
64	dl	1.5	}
65			try {
66			ai.get(-1);
67	jsr166	1.14	shouldThrow();
68	jsr166	1.13	} catch (IndexOutOfBoundsException success) {
69	dl	1.5	}
70			try {
71			ai.set(SIZE, 0);
72	jsr166	1.14	shouldThrow();
73	jsr166	1.13	} catch (IndexOutOfBoundsException success) {
74	dl	1.5	}
75			try {
76			ai.set(-1, 0);
77	jsr166	1.14	shouldThrow();
78	jsr166	1.13	} catch (IndexOutOfBoundsException success) {
79	dl	1.5	}
80			}
81
82			/**
83			* get returns the last value set at index
84	dl	1.4	*/
85			public void testGetSet() {
86	jsr166	1.11	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
87	dl	1.3	for (int i = 0; i < SIZE; ++i) {
88	dl	1.1	ai.set(i, 1);
89			assertEquals(1,ai.get(i));
90			ai.set(i, 2);
91			assertEquals(2,ai.get(i));
92			ai.set(i, -3);
93			assertEquals(-3,ai.get(i));
94			}
95			}
96
97	dl	1.4	/**
98	dl	1.10	* get returns the last value lazySet at index by same thread
99			*/
100			public void testGetLazySet() {
101	jsr166	1.11	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
102	dl	1.10	for (int i = 0; i < SIZE; ++i) {
103			ai.lazySet(i, 1);
104			assertEquals(1,ai.get(i));
105			ai.lazySet(i, 2);
106			assertEquals(2,ai.get(i));
107			ai.lazySet(i, -3);
108			assertEquals(-3,ai.get(i));
109			}
110			}
111
112			/**
113	dl	1.5	* compareAndSet succeeds in changing value if equal to expected else fails
114	dl	1.4	*/
115			public void testCompareAndSet() {
116	jsr166	1.11	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
117	dl	1.3	for (int i = 0; i < SIZE; ++i) {
118	dl	1.1	ai.set(i, 1);
119			assertTrue(ai.compareAndSet(i, 1,2));
120			assertTrue(ai.compareAndSet(i, 2,-4));
121			assertEquals(-4,ai.get(i));
122			assertFalse(ai.compareAndSet(i, -5,7));
123			assertFalse((7 == ai.get(i)));
124			assertTrue(ai.compareAndSet(i, -4,7));
125			assertEquals(7,ai.get(i));
126			}
127			}
128
129	dl	1.4	/**
130	dl	1.5	* compareAndSet in one thread enables another waiting for value
131			* to succeed
132			*/
133	jsr166	1.14	public void testCompareAndSetInMultipleThreads() throws Exception {
134	dl	1.5	final AtomicIntegerArray a = new AtomicIntegerArray(1);
135			a.set(0, 1);
136			Thread t = new Thread(new Runnable() {
137			public void run() {
138	jsr166	1.12	while (!a.compareAndSet(0, 2, 3)) Thread.yield();
139	dl	1.5	}});
140	jsr166	1.14
141			t.start();
142			assertTrue(a.compareAndSet(0, 1, 2));
143			t.join(LONG_DELAY_MS);
144			assertFalse(t.isAlive());
145			assertEquals(a.get(0), 3);
146	dl	1.5	}
147
148			/**
149			* repeated weakCompareAndSet succeeds in changing value when equal
150	jsr166	1.11	* to expected
151	dl	1.4	*/
152			public void testWeakCompareAndSet() {
153	jsr166	1.11	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
154	dl	1.3	for (int i = 0; i < SIZE; ++i) {
155	dl	1.1	ai.set(i, 1);
156	jsr166	1.12	while (!ai.weakCompareAndSet(i, 1,2));
157			while (!ai.weakCompareAndSet(i, 2,-4));
158	dl	1.1	assertEquals(-4,ai.get(i));
159	jsr166	1.12	while (!ai.weakCompareAndSet(i, -4,7));
160	dl	1.1	assertEquals(7,ai.get(i));
161			}
162			}
163
164	dl	1.4	/**
165	dl	1.5	* getAndSet returns previous value and sets to given value at given index
166	dl	1.4	*/
167			public void testGetAndSet() {
168	jsr166	1.11	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
169	dl	1.3	for (int i = 0; i < SIZE; ++i) {
170	dl	1.1	ai.set(i, 1);
171			assertEquals(1,ai.getAndSet(i,0));
172			assertEquals(0,ai.getAndSet(i,-10));
173			assertEquals(-10,ai.getAndSet(i,1));
174			}
175			}
176
177	dl	1.4	/**
178	dl	1.5	* getAndAdd returns previous value and adds given value
179	dl	1.4	*/
180			public void testGetAndAdd() {
181	jsr166	1.11	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
182	dl	1.3	for (int i = 0; i < SIZE; ++i) {
183	dl	1.1	ai.set(i, 1);
184			assertEquals(1,ai.getAndAdd(i,2));
185			assertEquals(3,ai.get(i));
186			assertEquals(3,ai.getAndAdd(i,-4));
187			assertEquals(-1,ai.get(i));
188			}
189			}
190
191	dl	1.4	/**
192	dl	1.5	* getAndDecrement returns previous value and decrements
193	dl	1.4	*/
194			public void testGetAndDecrement() {
195	jsr166	1.11	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
196	dl	1.3	for (int i = 0; i < SIZE; ++i) {
197	dl	1.1	ai.set(i, 1);
198			assertEquals(1,ai.getAndDecrement(i));
199			assertEquals(0,ai.getAndDecrement(i));
200			assertEquals(-1,ai.getAndDecrement(i));
201			}
202			}
203
204	dl	1.4	/**
205	dl	1.5	* getAndIncrement returns previous value and increments
206	dl	1.4	*/
207			public void testGetAndIncrement() {
208	jsr166	1.11	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
209	dl	1.3	for (int i = 0; i < SIZE; ++i) {
210	dl	1.1	ai.set(i, 1);
211			assertEquals(1,ai.getAndIncrement(i));
212			assertEquals(2,ai.get(i));
213			ai.set(i,-2);
214			assertEquals(-2,ai.getAndIncrement(i));
215			assertEquals(-1,ai.getAndIncrement(i));
216			assertEquals(0,ai.getAndIncrement(i));
217			assertEquals(1,ai.get(i));
218			}
219			}
220
221	dl	1.4	/**
222	dl	1.5	* addAndGet adds given value to current, and returns current value
223	dl	1.4	*/
224	dl	1.1	public void testAddAndGet() {
225	jsr166	1.11	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
226	dl	1.3	for (int i = 0; i < SIZE; ++i) {
227	dl	1.1	ai.set(i, 1);
228			assertEquals(3,ai.addAndGet(i,2));
229			assertEquals(3,ai.get(i));
230			assertEquals(-1,ai.addAndGet(i,-4));
231			assertEquals(-1,ai.get(i));
232			}
233			}
234
235	dl	1.4	/**
236	dl	1.5	* decrementAndGet decrements and returns current value
237	dl	1.4	*/
238			public void testDecrementAndGet() {
239	jsr166	1.11	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
240	dl	1.3	for (int i = 0; i < SIZE; ++i) {
241	dl	1.1	ai.set(i, 1);
242			assertEquals(0,ai.decrementAndGet(i));
243			assertEquals(-1,ai.decrementAndGet(i));
244			assertEquals(-2,ai.decrementAndGet(i));
245			assertEquals(-2,ai.get(i));
246			}
247			}
248
249	dl	1.4	/**
250	dl	1.5	* incrementAndGet increments and returns current value
251	dl	1.4	*/
252	dl	1.1	public void testIncrementAndGet() {
253	jsr166	1.11	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
254	dl	1.3	for (int i = 0; i < SIZE; ++i) {
255	dl	1.1	ai.set(i, 1);
256			assertEquals(2,ai.incrementAndGet(i));
257			assertEquals(2,ai.get(i));
258			ai.set(i, -2);
259			assertEquals(-1,ai.incrementAndGet(i));
260			assertEquals(0,ai.incrementAndGet(i));
261			assertEquals(1,ai.incrementAndGet(i));
262			assertEquals(1,ai.get(i));
263	dl	1.2	}
264			}
265
266	dl	1.3	static final int COUNTDOWN = 100000;
267	jsr166	1.11
268	dl	1.3	class Counter implements Runnable {
269			final AtomicIntegerArray ai;
270			volatile int counts;
271			Counter(AtomicIntegerArray a) { ai = a; }
272			public void run() {
273			for (;;) {
274			boolean done = true;
275			for (int i = 0; i < ai.length(); ++i) {
276			int v = ai.get(i);
277			threadAssertTrue(v >= 0);
278			if (v != 0) {
279			done = false;
280			if (ai.compareAndSet(i, v, v-1))
281			++counts;
282			}
283			}
284			if (done)
285			break;
286			}
287			}
288			}
289
290	dl	1.4	/**
291	dl	1.5	* Multiple threads using same array of counters successfully
292			* update a number of times equal to total count
293	dl	1.4	*/
294	jsr166	1.14	public void testCountingInMultipleThreads() throws InterruptedException {
295			final AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
296			for (int i = 0; i < SIZE; ++i)
297			ai.set(i, COUNTDOWN);
298			Counter c1 = new Counter(ai);
299			Counter c2 = new Counter(ai);
300			Thread t1 = new Thread(c1);
301			Thread t2 = new Thread(c2);
302			t1.start();
303			t2.start();
304			t1.join();
305			t2.join();
306			assertEquals(c1.counts+c2.counts, SIZE * COUNTDOWN);
307	dl	1.3	}
308
309
310	dl	1.4	/**
311	dl	1.5	* a deserialized serialized array holds same values
312	dl	1.4	*/
313	jsr166	1.14	public void testSerialization() throws Exception {
314	jsr166	1.11	AtomicIntegerArray l = new AtomicIntegerArray(SIZE);
315			for (int i = 0; i < SIZE; ++i)
316	dl	1.2	l.set(i, -i);
317
318	jsr166	1.14	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
319			ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
320			out.writeObject(l);
321			out.close();
322
323			ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
324			ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
325			AtomicIntegerArray r = (AtomicIntegerArray) in.readObject();
326			for (int i = 0; i < SIZE; ++i) {
327			assertEquals(l.get(i), r.get(i));
328	dl	1.1	}
329			}
330
331	dl	1.8
332	dl	1.9	/**
333			* toString returns current value.
334	jsr166	1.11	*/
335	dl	1.9	public void testToString() {
336			int[] a = { 17, 3, -42, 99, -7};
337			AtomicIntegerArray ai = new AtomicIntegerArray(a);
338			assertEquals(Arrays.toString(a), ai.toString());
339			}
340	dl	1.8
341	dl	1.1	}