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/publicdomain/zero/1.0/
 * Other contributors include Andrew Wright, Jeffrey Hayes,
 * Pat Fisher, Mike Judd.
 */

import java.util.Arrays;
import java.util.concurrent.atomic.AtomicIntegerArray;

import junit.framework.Test;
import junit.framework.TestSuite;

public class AtomicIntegerArrayTest extends JSR166TestCase {

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

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

    /**
     * constructor with null array throws NPE
     */
    public void testConstructor2NPE() {
        try {
            int[] a = null;
            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 aa = new AtomicIntegerArray(a);
        assertEquals(a.length, aa.length());
        for (int i = 0; i < a.length; i++)
            assertEquals(a[i], aa.get(i));
    }

    /**
     * get and set for out of bound indices throw IndexOutOfBoundsException
     */
    @SuppressWarnings("deprecation")
    public void testIndexing() {
        AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
        for (int index : new int[] { -1, SIZE }) {
            try {
                aa.get(index);
                shouldThrow();
            } catch (IndexOutOfBoundsException success) {}
            try {
                aa.set(index, 1);
                shouldThrow();
            } catch (IndexOutOfBoundsException success) {}
            try {
                aa.lazySet(index, 1);
                shouldThrow();
            } catch (IndexOutOfBoundsException success) {}
            try {
                aa.compareAndSet(index, 1, 2);
                shouldThrow();
            } catch (IndexOutOfBoundsException success) {}
            try {
                aa.weakCompareAndSet(index, 1, 2);
                shouldThrow();
            } catch (IndexOutOfBoundsException success) {}
            try {
                aa.getAndAdd(index, 1);
                shouldThrow();
            } catch (IndexOutOfBoundsException success) {}
            try {
                aa.addAndGet(index, 1);
                shouldThrow();
            } catch (IndexOutOfBoundsException success) {}
        }
    }

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

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

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

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

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

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

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

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

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

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

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

    class Counter extends CheckedRunnable {
        final AtomicIntegerArray aa;
        int decs;
        Counter(AtomicIntegerArray a) { aa = a; }
        public void realRun() {
            for (;;) {
                boolean done = true;
                for (int i = 0; i < aa.length(); i++) {
                    int v = aa.get(i);
                    assertTrue(v >= 0);
                    if (v != 0) {
                        done = false;
                        if (aa.compareAndSet(i, v, v - 1))
                            decs++;
                    }
                }
                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 aa = new AtomicIntegerArray(SIZE);
        int countdown = 10000;
        for (int i = 0; i < SIZE; i++)
            aa.set(i, countdown);
        Counter c1 = new Counter(aa);
        Counter c2 = new Counter(aa);
        Thread t1 = newStartedThread(c1);
        Thread t2 = newStartedThread(c2);
        t1.join();
        t2.join();
        assertEquals(c1.decs + c2.decs, SIZE * countdown);
    }

    /**
     * a deserialized/reserialized array holds same values in same order
     */
    public void testSerialization() throws Exception {
        AtomicIntegerArray x = new AtomicIntegerArray(SIZE);
        for (int i = 0; i < SIZE; i++)
            x.set(i, -i);
        AtomicIntegerArray y = serialClone(x);
        assertNotSame(x, y);
        assertEquals(x.length(), y.length());
        for (int i = 0; i < SIZE; i++) {
            assertEquals(x.get(i), y.get(i));
        }
    }

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

}
Revision:	1.39
Committed:	Tue Jan 26 13:33:05 2021 UTC (3 years, 3 months ago) by dl
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.38:	+2 -0 lines
Log Message:	Replace Integer with Item class
#	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	jsr166	1.20	* http://creativecommons.org/publicdomain/zero/1.0/
5	jsr166	1.11	* Other contributors include Andrew Wright, Jeffrey Hayes,
6			* Pat Fisher, Mike Judd.
7	dl	1.1	*/
8
9	jsr166	1.22	import java.util.Arrays;
10			import java.util.concurrent.atomic.AtomicIntegerArray;
11	dl	1.1
12	jsr166	1.29	import junit.framework.Test;
13			import junit.framework.TestSuite;
14
15	dl	1.3	public class AtomicIntegerArrayTest extends JSR166TestCase {
16	dl	1.1
17	jsr166	1.17	public static void main(String[] args) {
18	jsr166	1.32	main(suite(), args);
19	dl	1.1	}
20			public static Test suite() {
21			return new TestSuite(AtomicIntegerArrayTest.class);
22			}
23
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	jsr166	1.26	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
29			for (int i = 0; i < SIZE; i++)
30			assertEquals(0, aa.get(i));
31	dl	1.1	}
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	jsr166	1.31	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	jsr166	1.23	int[] a = { 17, 3, -42, 99, -7 };
49	jsr166	1.26	AtomicIntegerArray aa = new AtomicIntegerArray(a);
50			assertEquals(a.length, aa.length());
51			for (int i = 0; i < a.length; i++)
52			assertEquals(a[i], aa.get(i));
53	dl	1.7	}
54
55			/**
56	dl	1.5	* get and set for out of bound indices throw IndexOutOfBoundsException
57			*/
58	dl	1.39	@SuppressWarnings("deprecation")
59	jsr166	1.13	public void testIndexing() {
60	jsr166	1.26	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
61			for (int index : new int[] { -1, SIZE }) {
62			try {
63			aa.get(index);
64			shouldThrow();
65			} catch (IndexOutOfBoundsException success) {}
66			try {
67			aa.set(index, 1);
68			shouldThrow();
69			} catch (IndexOutOfBoundsException success) {}
70			try {
71			aa.lazySet(index, 1);
72			shouldThrow();
73			} catch (IndexOutOfBoundsException success) {}
74			try {
75			aa.compareAndSet(index, 1, 2);
76			shouldThrow();
77			} catch (IndexOutOfBoundsException success) {}
78			try {
79			aa.weakCompareAndSet(index, 1, 2);
80			shouldThrow();
81			} catch (IndexOutOfBoundsException success) {}
82			try {
83			aa.getAndAdd(index, 1);
84			shouldThrow();
85			} catch (IndexOutOfBoundsException success) {}
86			try {
87			aa.addAndGet(index, 1);
88			shouldThrow();
89			} catch (IndexOutOfBoundsException success) {}
90	dl	1.5	}
91			}
92
93			/**
94			* get returns the last value set at index
95	dl	1.4	*/
96			public void testGetSet() {
97	jsr166	1.26	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
98			for (int i = 0; i < SIZE; i++) {
99			aa.set(i, 1);
100			assertEquals(1, aa.get(i));
101			aa.set(i, 2);
102			assertEquals(2, aa.get(i));
103			aa.set(i, -3);
104			assertEquals(-3, aa.get(i));
105	dl	1.1	}
106			}
107
108	dl	1.4	/**
109	dl	1.10	* get returns the last value lazySet at index by same thread
110			*/
111			public void testGetLazySet() {
112	jsr166	1.26	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
113			for (int i = 0; i < SIZE; i++) {
114			aa.lazySet(i, 1);
115			assertEquals(1, aa.get(i));
116			aa.lazySet(i, 2);
117			assertEquals(2, aa.get(i));
118			aa.lazySet(i, -3);
119			assertEquals(-3, aa.get(i));
120	dl	1.10	}
121			}
122
123			/**
124	dl	1.5	* compareAndSet succeeds in changing value if equal to expected else fails
125	dl	1.4	*/
126			public void testCompareAndSet() {
127	jsr166	1.26	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
128			for (int i = 0; i < SIZE; i++) {
129			aa.set(i, 1);
130			assertTrue(aa.compareAndSet(i, 1, 2));
131			assertTrue(aa.compareAndSet(i, 2, -4));
132			assertEquals(-4, aa.get(i));
133			assertFalse(aa.compareAndSet(i, -5, 7));
134			assertEquals(-4, aa.get(i));
135			assertTrue(aa.compareAndSet(i, -4, 7));
136			assertEquals(7, aa.get(i));
137	dl	1.1	}
138			}
139
140	dl	1.4	/**
141	dl	1.5	* compareAndSet in one thread enables another waiting for value
142			* to succeed
143			*/
144	jsr166	1.14	public void testCompareAndSetInMultipleThreads() throws Exception {
145	dl	1.5	final AtomicIntegerArray a = new AtomicIntegerArray(1);
146			a.set(0, 1);
147	jsr166	1.15	Thread t = new Thread(new CheckedRunnable() {
148			public void realRun() {
149			while (!a.compareAndSet(0, 2, 3))
150			Thread.yield();
151			}});
152	jsr166	1.14
153			t.start();
154			assertTrue(a.compareAndSet(0, 1, 2));
155			t.join(LONG_DELAY_MS);
156			assertFalse(t.isAlive());
157	jsr166	1.25	assertEquals(3, a.get(0));
158	dl	1.5	}
159
160			/**
161			* repeated weakCompareAndSet succeeds in changing value when equal
162	jsr166	1.11	* to expected
163	dl	1.4	*/
164	dl	1.39	@SuppressWarnings("deprecation")
165	dl	1.4	public void testWeakCompareAndSet() {
166	jsr166	1.26	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
167			for (int i = 0; i < SIZE; i++) {
168			aa.set(i, 1);
169	jsr166	1.30	do {} while (!aa.weakCompareAndSet(i, 1, 2));
170			do {} while (!aa.weakCompareAndSet(i, 2, -4));
171	jsr166	1.26	assertEquals(-4, aa.get(i));
172	jsr166	1.30	do {} while (!aa.weakCompareAndSet(i, -4, 7));
173	jsr166	1.26	assertEquals(7, aa.get(i));
174	dl	1.1	}
175			}
176
177	dl	1.4	/**
178	jsr166	1.19	* getAndSet returns previous value and sets to given value at given index
179	dl	1.4	*/
180			public void testGetAndSet() {
181	jsr166	1.26	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
182			for (int i = 0; i < SIZE; i++) {
183			aa.set(i, 1);
184			assertEquals(1, aa.getAndSet(i, 0));
185			assertEquals(0, aa.getAndSet(i, -10));
186			assertEquals(-10, aa.getAndSet(i, 1));
187	dl	1.1	}
188			}
189
190	dl	1.4	/**
191	jsr166	1.19	* getAndAdd returns previous value and adds given value
192	dl	1.4	*/
193			public void testGetAndAdd() {
194	jsr166	1.26	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
195			for (int i = 0; i < SIZE; i++) {
196			aa.set(i, 1);
197			assertEquals(1, aa.getAndAdd(i, 2));
198			assertEquals(3, aa.get(i));
199			assertEquals(3, aa.getAndAdd(i, -4));
200			assertEquals(-1, aa.get(i));
201	dl	1.1	}
202			}
203
204	dl	1.4	/**
205	dl	1.5	* getAndDecrement returns previous value and decrements
206	dl	1.4	*/
207			public void testGetAndDecrement() {
208	jsr166	1.26	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
209			for (int i = 0; i < SIZE; i++) {
210			aa.set(i, 1);
211			assertEquals(1, aa.getAndDecrement(i));
212			assertEquals(0, aa.getAndDecrement(i));
213			assertEquals(-1, aa.getAndDecrement(i));
214	dl	1.1	}
215			}
216
217	dl	1.4	/**
218	dl	1.5	* getAndIncrement returns previous value and increments
219	dl	1.4	*/
220			public void testGetAndIncrement() {
221	jsr166	1.26	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
222			for (int i = 0; i < SIZE; i++) {
223			aa.set(i, 1);
224			assertEquals(1, aa.getAndIncrement(i));
225			assertEquals(2, aa.get(i));
226			aa.set(i, -2);
227			assertEquals(-2, aa.getAndIncrement(i));
228			assertEquals(-1, aa.getAndIncrement(i));
229			assertEquals(0, aa.getAndIncrement(i));
230			assertEquals(1, aa.get(i));
231	dl	1.1	}
232			}
233
234	dl	1.4	/**
235	jsr166	1.19	* addAndGet adds given value to current, and returns current value
236	dl	1.4	*/
237	dl	1.1	public void testAddAndGet() {
238	jsr166	1.26	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
239			for (int i = 0; i < SIZE; i++) {
240			aa.set(i, 1);
241			assertEquals(3, aa.addAndGet(i, 2));
242			assertEquals(3, aa.get(i));
243			assertEquals(-1, aa.addAndGet(i, -4));
244			assertEquals(-1, aa.get(i));
245	dl	1.1	}
246			}
247
248	dl	1.4	/**
249	dl	1.5	* decrementAndGet decrements and returns current value
250	dl	1.4	*/
251			public void testDecrementAndGet() {
252	jsr166	1.26	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
253			for (int i = 0; i < SIZE; i++) {
254			aa.set(i, 1);
255			assertEquals(0, aa.decrementAndGet(i));
256			assertEquals(-1, aa.decrementAndGet(i));
257			assertEquals(-2, aa.decrementAndGet(i));
258			assertEquals(-2, aa.get(i));
259	dl	1.1	}
260			}
261
262	dl	1.4	/**
263	jsr166	1.19	* incrementAndGet increments and returns current value
264	dl	1.4	*/
265	dl	1.1	public void testIncrementAndGet() {
266	jsr166	1.26	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
267			for (int i = 0; i < SIZE; i++) {
268			aa.set(i, 1);
269			assertEquals(2, aa.incrementAndGet(i));
270			assertEquals(2, aa.get(i));
271			aa.set(i, -2);
272			assertEquals(-1, aa.incrementAndGet(i));
273			assertEquals(0, aa.incrementAndGet(i));
274			assertEquals(1, aa.incrementAndGet(i));
275			assertEquals(1, aa.get(i));
276	dl	1.2	}
277			}
278
279	jsr166	1.18	class Counter extends CheckedRunnable {
280	jsr166	1.26	final AtomicIntegerArray aa;
281	jsr166	1.37	int decs;
282	jsr166	1.26	Counter(AtomicIntegerArray a) { aa = a; }
283	jsr166	1.18	public void realRun() {
284	dl	1.3	for (;;) {
285			boolean done = true;
286	jsr166	1.26	for (int i = 0; i < aa.length(); i++) {
287			int v = aa.get(i);
288	jsr166	1.18	assertTrue(v >= 0);
289	dl	1.3	if (v != 0) {
290			done = false;
291	jsr166	1.33	if (aa.compareAndSet(i, v, v - 1))
292	jsr166	1.37	decs++;
293	dl	1.3	}
294			}
295			if (done)
296			break;
297			}
298			}
299			}
300
301	dl	1.4	/**
302	dl	1.5	* Multiple threads using same array of counters successfully
303			* update a number of times equal to total count
304	dl	1.4	*/
305	jsr166	1.14	public void testCountingInMultipleThreads() throws InterruptedException {
306	jsr166	1.26	final AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
307	jsr166	1.28	int countdown = 10000;
308	jsr166	1.26	for (int i = 0; i < SIZE; i++)
309	jsr166	1.28	aa.set(i, countdown);
310	jsr166	1.26	Counter c1 = new Counter(aa);
311			Counter c2 = new Counter(aa);
312	jsr166	1.37	Thread t1 = newStartedThread(c1);
313			Thread t2 = newStartedThread(c2);
314	jsr166	1.14	t1.join();
315			t2.join();
316	jsr166	1.37	assertEquals(c1.decs + c2.decs, SIZE * countdown);
317	dl	1.3	}
318
319	dl	1.4	/**
320	jsr166	1.38	* a deserialized/reserialized array holds same values in same order
321	dl	1.4	*/
322	jsr166	1.14	public void testSerialization() throws Exception {
323	jsr166	1.22	AtomicIntegerArray x = new AtomicIntegerArray(SIZE);
324			for (int i = 0; i < SIZE; i++)
325			x.set(i, -i);
326			AtomicIntegerArray y = serialClone(x);
327	jsr166	1.27	assertNotSame(x, y);
328	jsr166	1.22	assertEquals(x.length(), y.length());
329			for (int i = 0; i < SIZE; i++) {
330			assertEquals(x.get(i), y.get(i));
331	dl	1.1	}
332			}
333
334	dl	1.9	/**
335			* toString returns current value.
336	jsr166	1.11	*/
337	dl	1.9	public void testToString() {
338	jsr166	1.23	int[] a = { 17, 3, -42, 99, -7 };
339	jsr166	1.26	AtomicIntegerArray aa = new AtomicIntegerArray(a);
340			assertEquals(Arrays.toString(a), aa.toString());
341	dl	1.9	}
342	dl	1.8
343	dl	1.1	}