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);
        } catch (NullPointerException success) {
        } catch (Exception ex) {
            unexpectedException();
        }
    }

    /**
     * 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);
        } catch (IndexOutOfBoundsException success) {
        }
        try {
            ai.get(-1);
        } catch (IndexOutOfBoundsException success) {
        }
        try {
            ai.set(SIZE, 0);
        } catch (IndexOutOfBoundsException success) {
        }
        try {
            ai.set(-1, 0);
        } 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() {
        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();
                }});
        try {
            t.start();
            assertTrue(a.compareAndSet(0, 1, 2));
            t.join(LONG_DELAY_MS);
            assertFalse(t.isAlive());
            assertEquals(a.get(0), 3);
        }
        catch (Exception e) {
            unexpectedException();
        }
    }

    /**
     * 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() {
        try {
            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);
        }
        catch (InterruptedException ie) {
            unexpectedException();
        }
    }


    /**
     * a deserialized serialized array holds same values
     */
    public void testSerialization() {
        AtomicIntegerArray l = new AtomicIntegerArray(SIZE);
        for (int i = 0; i < SIZE; ++i)
            l.set(i, -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));
            AtomicIntegerArray r = (AtomicIntegerArray) in.readObject();
            for (int i = 0; i < SIZE; ++i) {
                assertEquals(l.get(i), r.get(i));
            }
        } catch (Exception e) {
            e.printStackTrace();
            unexpectedException();
        }
    }


    /**
     * 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:	1.13
Committed:	Mon Nov 16 05:30:07 2009 UTC (14 years, 5 months ago) by jsr166
Branch:	MAIN
Changes since 1.12:	+6 -6 lines
Log Message:	whitespace
#	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			} catch (NullPointerException success) {
41			} catch (Exception ex) {
42			unexpectedException();
43			}
44			}
45
46			/**
47			* constructor with array is of same size and has all elements
48			*/
49			public void testConstructor2() {
50			int[] a = { 17, 3, -42, 99, -7};
51			AtomicIntegerArray ai = new AtomicIntegerArray(a);
52			assertEquals(a.length, ai.length());
53	jsr166	1.11	for (int i = 0; i < a.length; ++i)
54	dl	1.7	assertEquals(a[i], ai.get(i));
55			}
56
57			/**
58	dl	1.5	* get and set for out of bound indices throw IndexOutOfBoundsException
59			*/
60	jsr166	1.13	public void testIndexing() {
61	dl	1.5	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
62			try {
63			ai.get(SIZE);
64	jsr166	1.13	} catch (IndexOutOfBoundsException success) {
65	dl	1.5	}
66			try {
67			ai.get(-1);
68	jsr166	1.13	} catch (IndexOutOfBoundsException success) {
69	dl	1.5	}
70			try {
71			ai.set(SIZE, 0);
72	jsr166	1.13	} catch (IndexOutOfBoundsException success) {
73	dl	1.5	}
74			try {
75			ai.set(-1, 0);
76	jsr166	1.13	} catch (IndexOutOfBoundsException success) {
77	dl	1.5	}
78			}
79
80			/**
81			* get returns the last value set at index
82	dl	1.4	*/
83			public void testGetSet() {
84	jsr166	1.11	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
85	dl	1.3	for (int i = 0; i < SIZE; ++i) {
86	dl	1.1	ai.set(i, 1);
87			assertEquals(1,ai.get(i));
88			ai.set(i, 2);
89			assertEquals(2,ai.get(i));
90			ai.set(i, -3);
91			assertEquals(-3,ai.get(i));
92			}
93			}
94
95	dl	1.4	/**
96	dl	1.10	* get returns the last value lazySet at index by same thread
97			*/
98			public void testGetLazySet() {
99	jsr166	1.11	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
100	dl	1.10	for (int i = 0; i < SIZE; ++i) {
101			ai.lazySet(i, 1);
102			assertEquals(1,ai.get(i));
103			ai.lazySet(i, 2);
104			assertEquals(2,ai.get(i));
105			ai.lazySet(i, -3);
106			assertEquals(-3,ai.get(i));
107			}
108			}
109
110			/**
111	dl	1.5	* compareAndSet succeeds in changing value if equal to expected else fails
112	dl	1.4	*/
113			public void testCompareAndSet() {
114	jsr166	1.11	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
115	dl	1.3	for (int i = 0; i < SIZE; ++i) {
116	dl	1.1	ai.set(i, 1);
117			assertTrue(ai.compareAndSet(i, 1,2));
118			assertTrue(ai.compareAndSet(i, 2,-4));
119			assertEquals(-4,ai.get(i));
120			assertFalse(ai.compareAndSet(i, -5,7));
121			assertFalse((7 == ai.get(i)));
122			assertTrue(ai.compareAndSet(i, -4,7));
123			assertEquals(7,ai.get(i));
124			}
125			}
126
127	dl	1.4	/**
128	dl	1.5	* compareAndSet in one thread enables another waiting for value
129			* to succeed
130			*/
131			public void testCompareAndSetInMultipleThreads() {
132			final AtomicIntegerArray a = new AtomicIntegerArray(1);
133			a.set(0, 1);
134			Thread t = new Thread(new Runnable() {
135			public void run() {
136	jsr166	1.12	while (!a.compareAndSet(0, 2, 3)) Thread.yield();
137	dl	1.5	}});
138			try {
139			t.start();
140			assertTrue(a.compareAndSet(0, 1, 2));
141			t.join(LONG_DELAY_MS);
142			assertFalse(t.isAlive());
143			assertEquals(a.get(0), 3);
144			}
145	jsr166	1.12	catch (Exception e) {
146	dl	1.5	unexpectedException();
147			}
148			}
149
150			/**
151			* repeated weakCompareAndSet succeeds in changing value when equal
152	jsr166	1.11	* to expected
153	dl	1.4	*/
154			public void testWeakCompareAndSet() {
155	jsr166	1.11	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
156	dl	1.3	for (int i = 0; i < SIZE; ++i) {
157	dl	1.1	ai.set(i, 1);
158	jsr166	1.12	while (!ai.weakCompareAndSet(i, 1,2));
159			while (!ai.weakCompareAndSet(i, 2,-4));
160	dl	1.1	assertEquals(-4,ai.get(i));
161	jsr166	1.12	while (!ai.weakCompareAndSet(i, -4,7));
162	dl	1.1	assertEquals(7,ai.get(i));
163			}
164			}
165
166	dl	1.4	/**
167	dl	1.5	* getAndSet returns previous value and sets to given value at given index
168	dl	1.4	*/
169			public void testGetAndSet() {
170	jsr166	1.11	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
171	dl	1.3	for (int i = 0; i < SIZE; ++i) {
172	dl	1.1	ai.set(i, 1);
173			assertEquals(1,ai.getAndSet(i,0));
174			assertEquals(0,ai.getAndSet(i,-10));
175			assertEquals(-10,ai.getAndSet(i,1));
176			}
177			}
178
179	dl	1.4	/**
180	dl	1.5	* getAndAdd returns previous value and adds given value
181	dl	1.4	*/
182			public void testGetAndAdd() {
183	jsr166	1.11	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
184	dl	1.3	for (int i = 0; i < SIZE; ++i) {
185	dl	1.1	ai.set(i, 1);
186			assertEquals(1,ai.getAndAdd(i,2));
187			assertEquals(3,ai.get(i));
188			assertEquals(3,ai.getAndAdd(i,-4));
189			assertEquals(-1,ai.get(i));
190			}
191			}
192
193	dl	1.4	/**
194	dl	1.5	* getAndDecrement returns previous value and decrements
195	dl	1.4	*/
196			public void testGetAndDecrement() {
197	jsr166	1.11	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
198	dl	1.3	for (int i = 0; i < SIZE; ++i) {
199	dl	1.1	ai.set(i, 1);
200			assertEquals(1,ai.getAndDecrement(i));
201			assertEquals(0,ai.getAndDecrement(i));
202			assertEquals(-1,ai.getAndDecrement(i));
203			}
204			}
205
206	dl	1.4	/**
207	dl	1.5	* getAndIncrement returns previous value and increments
208	dl	1.4	*/
209			public void testGetAndIncrement() {
210	jsr166	1.11	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
211	dl	1.3	for (int i = 0; i < SIZE; ++i) {
212	dl	1.1	ai.set(i, 1);
213			assertEquals(1,ai.getAndIncrement(i));
214			assertEquals(2,ai.get(i));
215			ai.set(i,-2);
216			assertEquals(-2,ai.getAndIncrement(i));
217			assertEquals(-1,ai.getAndIncrement(i));
218			assertEquals(0,ai.getAndIncrement(i));
219			assertEquals(1,ai.get(i));
220			}
221			}
222
223	dl	1.4	/**
224	dl	1.5	* addAndGet adds given value to current, and returns current value
225	dl	1.4	*/
226	dl	1.1	public void testAddAndGet() {
227	jsr166	1.11	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
228	dl	1.3	for (int i = 0; i < SIZE; ++i) {
229	dl	1.1	ai.set(i, 1);
230			assertEquals(3,ai.addAndGet(i,2));
231			assertEquals(3,ai.get(i));
232			assertEquals(-1,ai.addAndGet(i,-4));
233			assertEquals(-1,ai.get(i));
234			}
235			}
236
237	dl	1.4	/**
238	dl	1.5	* decrementAndGet decrements and returns current value
239	dl	1.4	*/
240			public void testDecrementAndGet() {
241	jsr166	1.11	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
242	dl	1.3	for (int i = 0; i < SIZE; ++i) {
243	dl	1.1	ai.set(i, 1);
244			assertEquals(0,ai.decrementAndGet(i));
245			assertEquals(-1,ai.decrementAndGet(i));
246			assertEquals(-2,ai.decrementAndGet(i));
247			assertEquals(-2,ai.get(i));
248			}
249			}
250
251	dl	1.4	/**
252	dl	1.5	* incrementAndGet increments and returns current value
253	dl	1.4	*/
254	dl	1.1	public void testIncrementAndGet() {
255	jsr166	1.11	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
256	dl	1.3	for (int i = 0; i < SIZE; ++i) {
257	dl	1.1	ai.set(i, 1);
258			assertEquals(2,ai.incrementAndGet(i));
259			assertEquals(2,ai.get(i));
260			ai.set(i, -2);
261			assertEquals(-1,ai.incrementAndGet(i));
262			assertEquals(0,ai.incrementAndGet(i));
263			assertEquals(1,ai.incrementAndGet(i));
264			assertEquals(1,ai.get(i));
265	dl	1.2	}
266			}
267
268	dl	1.3	static final int COUNTDOWN = 100000;
269	jsr166	1.11
270	dl	1.3	class Counter implements Runnable {
271			final AtomicIntegerArray ai;
272			volatile int counts;
273			Counter(AtomicIntegerArray a) { ai = a; }
274			public void run() {
275			for (;;) {
276			boolean done = true;
277			for (int i = 0; i < ai.length(); ++i) {
278			int v = ai.get(i);
279			threadAssertTrue(v >= 0);
280			if (v != 0) {
281			done = false;
282			if (ai.compareAndSet(i, v, v-1))
283			++counts;
284			}
285			}
286			if (done)
287			break;
288			}
289			}
290			}
291
292	dl	1.4	/**
293	dl	1.5	* Multiple threads using same array of counters successfully
294			* update a number of times equal to total count
295	dl	1.4	*/
296	dl	1.3	public void testCountingInMultipleThreads() {
297			try {
298	jsr166	1.11	final AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
299			for (int i = 0; i < SIZE; ++i)
300	dl	1.3	ai.set(i, COUNTDOWN);
301			Counter c1 = new Counter(ai);
302			Counter c2 = new Counter(ai);
303			Thread t1 = new Thread(c1);
304			Thread t2 = new Thread(c2);
305			t1.start();
306			t2.start();
307			t1.join();
308			t2.join();
309			assertEquals(c1.counts+c2.counts, SIZE * COUNTDOWN);
310			}
311	jsr166	1.12	catch (InterruptedException ie) {
312	dl	1.4	unexpectedException();
313	dl	1.3	}
314			}
315
316
317	dl	1.4	/**
318	dl	1.5	* a deserialized serialized array holds same values
319	dl	1.4	*/
320	dl	1.2	public void testSerialization() {
321	jsr166	1.11	AtomicIntegerArray l = new AtomicIntegerArray(SIZE);
322			for (int i = 0; i < SIZE; ++i)
323	dl	1.2	l.set(i, -i);
324
325			try {
326			ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
327			ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
328			out.writeObject(l);
329			out.close();
330
331			ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
332			ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
333			AtomicIntegerArray r = (AtomicIntegerArray) in.readObject();
334	dl	1.3	for (int i = 0; i < SIZE; ++i) {
335	dl	1.2	assertEquals(l.get(i), r.get(i));
336			}
337	jsr166	1.13	} catch (Exception e) {
338	dl	1.2	e.printStackTrace();
339	dl	1.4	unexpectedException();
340	dl	1.1	}
341			}
342
343	dl	1.8
344	dl	1.9	/**
345			* toString returns current value.
346	jsr166	1.11	*/
347	dl	1.9	public void testToString() {
348			int[] a = { 17, 3, -42, 99, -7};
349			AtomicIntegerArray ai = new AtomicIntegerArray(a);
350			assertEquals(Arrays.toString(a), ai.toString());
351			}
352	dl	1.8
353	dl	1.1	}