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root/jsr166/jsr166/src/test/tck/ArrayBlockingQueueTest.java

Comparing jsr166/src/test/tck/ArrayBlockingQueueTest.java (file contents):
Revision 1.69 by jsr166, Mon Oct 5 23:06:12 2015 UTC vs.
Revision 1.94 by jsr166, Tue Aug 13 00:54:51 2019 UTC

#	Line 11 | Line 11 | import static java.util.concurrent.TimeU
11		import java.util.ArrayList;
12		import java.util.Arrays;
13		import java.util.Collection;
14	+	import java.util.Collections;
15		import java.util.Iterator;
16		import java.util.NoSuchElementException;
17		import java.util.Queue;
#	Line 19 | Line 20 | import java.util.concurrent.BlockingQueu
20		import java.util.concurrent.CountDownLatch;
21		import java.util.concurrent.Executors;
22		import java.util.concurrent.ExecutorService;
23	+	import java.util.concurrent.ThreadLocalRandom;
24
25		import junit.framework.Test;
26
27		public class ArrayBlockingQueueTest extends JSR166TestCase {
28
29	+	public static void main(String[] args) {
30	+	main(suite(), args);
31	+	}
32	+
33	+	public static Test suite() {
34	+	class Implementation implements CollectionImplementation {
35	+	public Class<?> klazz() { return ArrayBlockingQueue.class; }
36	+	public Collection emptyCollection() {
37	+	boolean fair = randomBoolean();
38	+	return populatedQueue(0, SIZE, 2 * SIZE, fair);
39	+	}
40	+	public Object makeElement(int i) { return i; }
41	+	public boolean isConcurrent() { return true; }
42	+	public boolean permitsNulls() { return false; }
43	+	}
44	+
45	+	return newTestSuite(
46	+	ArrayBlockingQueueTest.class,
47	+	new Fair().testSuite(),
48	+	new NonFair().testSuite(),
49	+	CollectionTest.testSuite(new Implementation()));
50	+	}
51	+
52		public static class Fair extends BlockingQueueTest {
53		protected BlockingQueue emptyCollection() {
54	<	return new ArrayBlockingQueue(SIZE, true);
54	>	return populatedQueue(0, SIZE, 2 * SIZE, true);
55		}
56		}
57
58		public static class NonFair extends BlockingQueueTest {
59		protected BlockingQueue emptyCollection() {
60	<	return new ArrayBlockingQueue(SIZE, false);
60	>	return populatedQueue(0, SIZE, 2 * SIZE, false);
61		}
62		}
63
64	<	public static void main(String[] args) {
65	<	main(suite(), args);
66	<	}
67	<
68	<	public static Test suite() {
69	<	return newTestSuite(ArrayBlockingQueueTest.class,
45	<	new Fair().testSuite(),
46	<	new NonFair().testSuite());
64	>	/**
65	>	* Returns a new queue of given size containing consecutive
66	>	* Integers 0 ... n - 1.
67	>	*/
68	>	static ArrayBlockingQueue<Integer> populatedQueue(int n) {
69	>	return populatedQueue(n, n, n, false);
70		}
71
72		/**
73		* Returns a new queue of given size containing consecutive
74	<	* Integers 0 ... n.
74	>	* Integers 0 ... n - 1, with given capacity range and fairness.
75		*/
76	<	private ArrayBlockingQueue<Integer> populatedQueue(int n) {
77	<	ArrayBlockingQueue<Integer> q = new ArrayBlockingQueue<Integer>(n);
76	>	static ArrayBlockingQueue<Integer> populatedQueue(
77	>	int size, int minCapacity, int maxCapacity, boolean fair) {
78	>	ThreadLocalRandom rnd = ThreadLocalRandom.current();
79	>	int capacity = rnd.nextInt(minCapacity, maxCapacity + 1);
80	>	ArrayBlockingQueue<Integer> q = new ArrayBlockingQueue<>(capacity);
81		assertTrue(q.isEmpty());
82	<	for (int i = 0; i < n; i++)
83	<	assertTrue(q.offer(new Integer(i)));
84	<	assertFalse(q.isEmpty());
85	<	assertEquals(0, q.remainingCapacity());
86	<	assertEquals(n, q.size());
82	>	// shuffle circular array elements so they wrap
83	>	{
84	>	int n = rnd.nextInt(capacity);
85	>	for (int i = 0; i < n; i++) q.add(42);
86	>	for (int i = 0; i < n; i++) q.remove();
87	>	}
88	>	for (int i = 0; i < size; i++)
89	>	assertTrue(q.offer((Integer) i));
90	>	assertEquals(size == 0, q.isEmpty());
91	>	assertEquals(capacity - size, q.remainingCapacity());
92	>	assertEquals(size, q.size());
93	>	if (size > 0)
94	>	assertEquals((Integer) 0, q.peek());
95		return q;
96		}
97
#	Line 69 | Line 103 | public class ArrayBlockingQueueTest exte
103		}
104
105		/**
106	<	* Constructor throws IAE if capacity argument nonpositive
106	>	* Constructor throws IllegalArgumentException if capacity argument nonpositive
107		*/
108	<	public void testConstructor2() {
109	<	try {
110	<	new ArrayBlockingQueue(0);
111	<	shouldThrow();
112	<	} catch (IllegalArgumentException success) {}
108	>	public void testConstructor_nonPositiveCapacity() {
109	>	for (int i : new int[] { 0, -1, Integer.MIN_VALUE }) {
110	>	try {
111	>	new ArrayBlockingQueue(i);
112	>	shouldThrow();
113	>	} catch (IllegalArgumentException success) {}
114	>	for (boolean fair : new boolean[] { true, false }) {
115	>	try {
116	>	new ArrayBlockingQueue(i, fair);
117	>	shouldThrow();
118	>	} catch (IllegalArgumentException success) {}
119	>	}
120	>	}
121		}
122
123		/**
124		* Initializing from null Collection throws NPE
125		*/
126	<	public void testConstructor3() {
126	>	public void testConstructor_nullCollection() {
127		try {
128		new ArrayBlockingQueue(1, true, null);
129		shouldThrow();
#	Line 114 | Line 156 | public class ArrayBlockingQueueTest exte
156		}
157
158		/**
159	<	* Initializing from too large collection throws IAE
159	>	* Initializing from too large collection throws IllegalArgumentException
160		*/
161	<	public void testConstructor6() {
162	<	Integer[] ints = new Integer[SIZE];
163	<	for (int i = 0; i < SIZE; ++i)
164	<	ints[i] = i;
123	<	Collection<Integer> elements = Arrays.asList(ints);
161	>	public void testConstructor_collectionTooLarge() {
162	>	// just barely fits - succeeds
163	>	new ArrayBlockingQueue(SIZE, false,
164	>	Collections.nCopies(SIZE, ""));
165		try {
166	<	new ArrayBlockingQueue(SIZE - 1, false, elements);
166	>	new ArrayBlockingQueue(SIZE - 1, false,
167	>	Collections.nCopies(SIZE, ""));
168		shouldThrow();
169		} catch (IllegalArgumentException success) {}
170		}
#	Line 144 | Line 186 | public class ArrayBlockingQueueTest exte
186		* Queue transitions from empty to full when elements added
187		*/
188		public void testEmptyFull() {
189	<	ArrayBlockingQueue q = new ArrayBlockingQueue(2);
189	>	BlockingQueue q = populatedQueue(0, 2, 2, false);
190		assertTrue(q.isEmpty());
191		assertEquals(2, q.remainingCapacity());
192		q.add(one);
193		assertFalse(q.isEmpty());
194	<	q.add(two);
194	>	assertTrue(q.offer(two));
195		assertFalse(q.isEmpty());
196		assertEquals(0, q.remainingCapacity());
197		assertFalse(q.offer(three));
#	Line 159 | Line 201 | public class ArrayBlockingQueueTest exte
201		* remainingCapacity decreases on add, increases on remove
202		*/
203		public void testRemainingCapacity() {
204	<	BlockingQueue q = populatedQueue(SIZE);
205	<	for (int i = 0; i < SIZE; ++i) {
206	<	assertEquals(i, q.remainingCapacity());
207	<	assertEquals(SIZE, q.size() + q.remainingCapacity());
204	>	int size = ThreadLocalRandom.current().nextInt(1, SIZE);
205	>	BlockingQueue q = populatedQueue(size, size, 2 * size, false);
206	>	int spare = q.remainingCapacity();
207	>	int capacity = spare + size;
208	>	for (int i = 0; i < size; i++) {
209	>	assertEquals(spare + i, q.remainingCapacity());
210	>	assertEquals(capacity, q.size() + q.remainingCapacity());
211		assertEquals(i, q.remove());
212		}
213	<	for (int i = 0; i < SIZE; ++i) {
214	<	assertEquals(SIZE - i, q.remainingCapacity());
215	<	assertEquals(SIZE, q.size() + q.remainingCapacity());
213	>	for (int i = 0; i < size; i++) {
214	>	assertEquals(capacity - i, q.remainingCapacity());
215	>	assertEquals(capacity, q.size() + q.remainingCapacity());
216		assertTrue(q.add(i));
217		}
218		}
#	Line 182 | Line 227 | public class ArrayBlockingQueueTest exte
227		}
228
229		/**
230	<	* add succeeds if not full; throws ISE if full
230	>	* add succeeds if not full; throws IllegalStateException if full
231		*/
232		public void testAdd() {
233		ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
234	<	for (int i = 0; i < SIZE; ++i) {
190	<	assertTrue(q.add(new Integer(i)));
191	<	}
234	>	for (int i = 0; i < SIZE; i++) assertTrue(q.add((Integer) i));
235		assertEquals(0, q.remainingCapacity());
236		try {
237	<	q.add(new Integer(SIZE));
237	>	q.add((Integer) SIZE);
238		shouldThrow();
239		} catch (IllegalStateException success) {}
240		}
241
242		/**
243	<	* addAll(this) throws IAE
243	>	* addAll(this) throws IllegalArgumentException
244		*/
245		public void testAddAllSelf() {
246		ArrayBlockingQueue q = populatedQueue(SIZE);
#	Line 223 | Line 266 | public class ArrayBlockingQueueTest exte
266		}
267
268		/**
269	<	* addAll throws ISE if not enough room
269	>	* addAll throws IllegalStateException if not enough room
270		*/
271	<	public void testAddAll4() {
272	<	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
273	<	Integer[] ints = new Integer[SIZE];
274	<	for (int i = 0; i < SIZE; ++i)
275	<	ints[i] = new Integer(i);
271	>	public void testAddAll_insufficientSpace() {
272	>	int size = ThreadLocalRandom.current().nextInt(1, SIZE);
273	>	ArrayBlockingQueue q = populatedQueue(0, size, size, false);
274	>	// Just fits:
275	>	q.addAll(populatedQueue(size, size, 2 * size, false));
276	>	assertEquals(0, q.remainingCapacity());
277	>	assertEquals(size, q.size());
278	>	assertEquals(0, q.peek());
279		try {
280	<	q.addAll(Arrays.asList(ints));
280	>	q = populatedQueue(0, size, size, false);
281	>	q.addAll(Collections.nCopies(size + 1, 42));
282		shouldThrow();
283		} catch (IllegalStateException success) {}
284		}
#	Line 293 | Line 340 | public class ArrayBlockingQueueTest exte
340		}});
341
342		await(pleaseInterrupt);
343	<	assertThreadStaysAlive(t);
343	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
344		t.interrupt();
345		awaitTermination(t);
346		assertEquals(SIZE, q.size());
#	Line 315 | Line 362 | public class ArrayBlockingQueueTest exte
362		pleaseTake.countDown();
363		q.put(86);
364
365	+	Thread.currentThread().interrupt();
366	+	try {
367	+	q.put(99);
368	+	shouldThrow();
369	+	} catch (InterruptedException success) {}
370	+	assertFalse(Thread.interrupted());
371	+
372		pleaseInterrupt.countDown();
373		try {
374		q.put(99);
#	Line 328 | Line 382 | public class ArrayBlockingQueueTest exte
382		assertEquals(0, q.take());
383
384		await(pleaseInterrupt);
385	<	assertThreadStaysAlive(t);
385	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
386		t.interrupt();
387		awaitTermination(t);
388		assertEquals(0, q.remainingCapacity());
#	Line 337 | Line 391 | public class ArrayBlockingQueueTest exte
391		/**
392		* timed offer times out if full and elements not taken
393		*/
394	<	public void testTimedOffer() throws InterruptedException {
394	>	public void testTimedOffer() {
395		final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
396		final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
397		Thread t = newStartedThread(new CheckedRunnable() {
#	Line 347 | Line 401 | public class ArrayBlockingQueueTest exte
401		long startTime = System.nanoTime();
402		assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS));
403		assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
404	+
405	+	Thread.currentThread().interrupt();
406	+	try {
407	+	q.offer(new Object(), randomTimeout(), randomTimeUnit());
408	+	shouldThrow();
409	+	} catch (InterruptedException success) {}
410	+	assertFalse(Thread.interrupted());
411	+
412		pleaseInterrupt.countDown();
413		try {
414	<	q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS);
414	>	q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS);
415		shouldThrow();
416		} catch (InterruptedException success) {}
417	+	assertFalse(Thread.interrupted());
418	+
419	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
420		}});
421
422		await(pleaseInterrupt);
423	<	assertThreadStaysAlive(t);
423	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
424		t.interrupt();
425		awaitTermination(t);
426		}
#	Line 378 | Line 443 | public class ArrayBlockingQueueTest exte
443		final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
444		Thread t = newStartedThread(new CheckedRunnable() {
445		public void realRun() throws InterruptedException {
446	<	for (int i = 0; i < SIZE; ++i) {
382	<	assertEquals(i, q.take());
383	<	}
446	>	for (int i = 0; i < SIZE; i++) assertEquals(i, q.take());
447
448		Thread.currentThread().interrupt();
449		try {
#	Line 398 | Line 461 | public class ArrayBlockingQueueTest exte
461		}});
462
463		await(pleaseInterrupt);
464	<	assertThreadStaysAlive(t);
464	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
465		t.interrupt();
466		awaitTermination(t);
467		}
#	Line 448 | Line 511 | public class ArrayBlockingQueueTest exte
511		*/
512		public void testInterruptedTimedPoll() throws InterruptedException {
513		final BlockingQueue<Integer> q = populatedQueue(SIZE);
514	<	final CountDownLatch aboutToWait = new CountDownLatch(1);
514	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
515		Thread t = newStartedThread(new CheckedRunnable() {
516		public void realRun() throws InterruptedException {
454	–	for (int i = 0; i < SIZE; ++i) {
455	–	long startTime = System.nanoTime();
456	–	assertEquals(i, (int) q.poll(2*LONG_DELAY_MS, MILLISECONDS));
457	–	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
458	–	}
517		long startTime = System.nanoTime();
518	<	aboutToWait.countDown();
518	>	for (int i = 0; i < SIZE; i++)
519	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
520	>
521	>	Thread.currentThread().interrupt();
522	>	try {
523	>	q.poll(randomTimeout(), randomTimeUnit());
524	>	shouldThrow();
525	>	} catch (InterruptedException success) {}
526	>	assertFalse(Thread.interrupted());
527	>
528	>	pleaseInterrupt.countDown();
529		try {
530	<	q.poll(2*LONG_DELAY_MS, MILLISECONDS);
530	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
531		shouldThrow();
532	<	} catch (InterruptedException success) {
533	<	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
534	<	}
532	>	} catch (InterruptedException success) {}
533	>	assertFalse(Thread.interrupted());
534	>
535	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
536		}});
537
538	<	await(aboutToWait);
539	<	waitForThreadToEnterWaitState(t, LONG_DELAY_MS);
538	>	await(pleaseInterrupt);
539	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
540		t.interrupt();
541	<	awaitTermination(t, LONG_DELAY_MS);
541	>	awaitTermination(t);
542		checkEmpty(q);
543		}
544
#	Line 520 | Line 589 | public class ArrayBlockingQueueTest exte
589		* contains(x) reports true when elements added but not yet removed
590		*/
591		public void testContains() {
592	<	ArrayBlockingQueue q = populatedQueue(SIZE);
593	<	for (int i = 0; i < SIZE; ++i) {
592	>	int size = ThreadLocalRandom.current().nextInt(1, SIZE);
593	>	ArrayBlockingQueue q = populatedQueue(size, size, 2 * size, false);
594	>	assertFalse(q.contains(null));
595	>	for (int i = 0; i < size; ++i) {
596		assertTrue(q.contains(new Integer(i)));
597		assertEquals(i, q.poll());
598		assertFalse(q.contains(new Integer(i)));
#	Line 532 | Line 603 | public class ArrayBlockingQueueTest exte
603		* clear removes all elements
604		*/
605		public void testClear() {
606	<	ArrayBlockingQueue q = populatedQueue(SIZE);
606	>	int size = ThreadLocalRandom.current().nextInt(1, 5);
607	>	ArrayBlockingQueue q = populatedQueue(size, size, 2 * size, false);
608	>	int capacity = size + q.remainingCapacity();
609		q.clear();
610		assertTrue(q.isEmpty());
611		assertEquals(0, q.size());
612	<	assertEquals(SIZE, q.remainingCapacity());
612	>	assertEquals(capacity, q.remainingCapacity());
613		q.add(one);
614		assertFalse(q.isEmpty());
615		assertTrue(q.contains(one));
#	Line 593 | Line 666 | public class ArrayBlockingQueueTest exte
666		}
667		}
668
669	<	void checkToArray(ArrayBlockingQueue q) {
669	>	void checkToArray(ArrayBlockingQueue<Integer> q) {
670		int size = q.size();
671	<	Object[] o = q.toArray();
672	<	assertEquals(size, o.length);
671	>	Object[] a1 = q.toArray();
672	>	assertEquals(size, a1.length);
673	>	Integer[] a2 = q.toArray(new Integer[0]);
674	>	assertEquals(size, a2.length);
675	>	Integer[] a3 = q.toArray(new Integer[Math.max(0, size - 1)]);
676	>	assertEquals(size, a3.length);
677	>	Integer[] a4 = new Integer[size];
678	>	assertSame(a4, q.toArray(a4));
679	>	Integer[] a5 = new Integer[size + 1];
680	>	Arrays.fill(a5, 42);
681	>	assertSame(a5, q.toArray(a5));
682	>	Integer[] a6 = new Integer[size + 2];
683	>	Arrays.fill(a6, 42);
684	>	assertSame(a6, q.toArray(a6));
685	>	Object[][] as = { a1, a2, a3, a4, a5, a6 };
686	>	for (Object[] a : as) {
687	>	if (a.length > size) assertNull(a[size]);
688	>	if (a.length > size + 1) assertEquals(42, a[size + 1]);
689	>	}
690		Iterator it = q.iterator();
691	+	Integer s = q.peek();
692		for (int i = 0; i < size; i++) {
693		Integer x = (Integer) it.next();
694	<	assertEquals((Integer)o[0] + i, (int) x);
695	<	assertSame(o[i], x);
694	>	assertEquals(s + i, (int) x);
695	>	for (Object[] a : as)
696	>	assertSame(a1[i], x);
697		}
698		}
699
700		/**
701	<	* toArray() contains all elements in FIFO order
701	>	* toArray() and toArray(a) contain all elements in FIFO order
702		*/
703		public void testToArray() {
704	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
705	<	for (int i = 0; i < SIZE; i++) {
704	>	final ThreadLocalRandom rnd = ThreadLocalRandom.current();
705	>	final int size = rnd.nextInt(6);
706	>	final int capacity = Math.max(1, size + rnd.nextInt(size + 1));
707	>	ArrayBlockingQueue<Integer> q = new ArrayBlockingQueue<>(capacity);
708	>	for (int i = 0; i < size; i++) {
709		checkToArray(q);
710		q.add(i);
711		}
712		// Provoke wraparound
713	<	for (int i = 0; i < SIZE; i++) {
714	<	checkToArray(q);
620	<	assertEquals(i, q.poll());
713	>	int added = size * 2;
714	>	for (int i = 0; i < added; i++) {
715		checkToArray(q);
716	<	q.add(SIZE + i);
716	>	assertEquals((Integer) i, q.poll());
717	>	q.add(size + i);
718		}
624	–	for (int i = 0; i < SIZE; i++) {
625	–	checkToArray(q);
626	–	assertEquals(SIZE + i, q.poll());
627	–	}
628	–	}
629	–
630	–	void checkToArray2(ArrayBlockingQueue q) {
631	–	int size = q.size();
632	–	Integer[] a1 = (size == 0) ? null : new Integer[size - 1];
633	–	Integer[] a2 = new Integer[size];
634	–	Integer[] a3 = new Integer[size + 2];
635	–	if (size > 0) Arrays.fill(a1, 42);
636	–	Arrays.fill(a2, 42);
637	–	Arrays.fill(a3, 42);
638	–	Integer[] b1 = (size == 0) ? null : (Integer[]) q.toArray(a1);
639	–	Integer[] b2 = (Integer[]) q.toArray(a2);
640	–	Integer[] b3 = (Integer[]) q.toArray(a3);
641	–	assertSame(a2, b2);
642	–	assertSame(a3, b3);
643	–	Iterator it = q.iterator();
719		for (int i = 0; i < size; i++) {
720	<	Integer x = (Integer) it.next();
721	<	assertSame(b1[i], x);
647	<	assertEquals(b1[0] + i, (int) x);
648	<	assertSame(b2[i], x);
649	<	assertSame(b3[i], x);
650	<	}
651	<	assertNull(a3[size]);
652	<	assertEquals(42, (int) a3[size + 1]);
653	<	if (size > 0) {
654	<	assertNotSame(a1, b1);
655	<	assertEquals(size, b1.length);
656	<	for (int i = 0; i < a1.length; i++) {
657	<	assertEquals(42, (int) a1[i]);
658	<	}
659	<	}
660	<	}
661	<
662	<	/**
663	<	* toArray(a) contains all elements in FIFO order
664	<	*/
665	<	public void testToArray2() {
666	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
667	<	for (int i = 0; i < SIZE; i++) {
668	<	checkToArray2(q);
669	<	q.add(i);
670	<	}
671	<	// Provoke wraparound
672	<	for (int i = 0; i < SIZE; i++) {
673	<	checkToArray2(q);
674	<	assertEquals(i, q.poll());
675	<	checkToArray2(q);
676	<	q.add(SIZE + i);
677	<	}
678	<	for (int i = 0; i < SIZE; i++) {
679	<	checkToArray2(q);
680	<	assertEquals(SIZE + i, q.poll());
720	>	checkToArray(q);
721	>	assertEquals((Integer) (added + i), q.poll());
722		}
723		}
724
725		/**
726		* toArray(incompatible array type) throws ArrayStoreException
727		*/
728	<	public void testToArray1_BadArg() {
728	>	public void testToArray_incompatibleArrayType() {
729		ArrayBlockingQueue q = populatedQueue(SIZE);
730		try {
731		q.toArray(new String[10]);
732		shouldThrow();
733		} catch (ArrayStoreException success) {}
734	+	try {
735	+	q.toArray(new String[0]);
736	+	shouldThrow();
737	+	} catch (ArrayStoreException success) {}
738		}
739
740		/**
#	Line 833 | Line 878 | public class ArrayBlockingQueueTest exte
878		}
879
880		/**
881	<	* A deserialized serialized queue has same elements in same order
881	>	* A deserialized/reserialized queue has same elements in same order
882		*/
883		public void testSerialization() throws Exception {
884		Queue x = populatedQueue(SIZE);
#	Line 918 | Line 963 | public class ArrayBlockingQueueTest exte
963		*/
964		public void testNeverContainsNull() {
965		Collection<?>[] qs = {
966	<	new ArrayBlockingQueue<Object>(10),
967	<	populatedQueue(2),
966	>	populatedQueue(0, 1, 10, false),
967	>	populatedQueue(2, 2, 10, true),
968		};
969
970		for (Collection<?> q : qs) {

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