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Comparing jsr166/src/test/tck/LinkedBlockingDequeTest.java (file contents):
Revision 1.35 by jsr166, Tue Mar 15 19:47:06 2011 UTC vs.
Revision 1.77 by jsr166, Sun May 14 00:56:43 2017 UTC

#	Line 4 | Line 4
4		* http://creativecommons.org/publicdomain/zero/1.0/
5		*/
6
7	–	import junit.framework.*;
8	–	import java.util.*;
9	–	import java.util.concurrent.*;
7		import static java.util.concurrent.TimeUnit.MILLISECONDS;
8	<	import java.io.*;
8	>
9	>	import java.util.ArrayList;
10	>	import java.util.Arrays;
11	>	import java.util.Collection;
12	>	import java.util.Deque;
13	>	import java.util.Iterator;
14	>	import java.util.NoSuchElementException;
15	>	import java.util.Queue;
16	>	import java.util.concurrent.BlockingDeque;
17	>	import java.util.concurrent.BlockingQueue;
18	>	import java.util.concurrent.CountDownLatch;
19	>	import java.util.concurrent.Executors;
20	>	import java.util.concurrent.ExecutorService;
21	>	import java.util.concurrent.LinkedBlockingDeque;
22	>
23	>	import junit.framework.Test;
24
25		public class LinkedBlockingDequeTest extends JSR166TestCase {
26
#	Line 20 | Line 32 | public class LinkedBlockingDequeTest ext
32
33		public static class Bounded extends BlockingQueueTest {
34		protected BlockingQueue emptyCollection() {
35	<	return new LinkedBlockingDeque(20);
35	>	return new LinkedBlockingDeque(SIZE);
36		}
37		}
38
39		public static void main(String[] args) {
40	<	junit.textui.TestRunner.run(suite());
40	>	main(suite(), args);
41		}
42
43		public static Test suite() {
44	+	class Implementation implements CollectionImplementation {
45	+	public Class<?> klazz() { return LinkedBlockingDeque.class; }
46	+	public Collection emptyCollection() { return new LinkedBlockingDeque(); }
47	+	public Object makeElement(int i) { return i; }
48	+	public boolean isConcurrent() { return true; }
49	+	public boolean permitsNulls() { return false; }
50	+	}
51		return newTestSuite(LinkedBlockingDequeTest.class,
52		new Unbounded().testSuite(),
53	<	new Bounded().testSuite());
53	>	new Bounded().testSuite(),
54	>	CollectionTest.testSuite(new Implementation()));
55		}
56
57		/**
58	<	* Create a deque of given size containing consecutive
59	<	* Integers 0 ... n.
58	>	* Returns a new deque of given size containing consecutive
59	>	* Integers 0 ... n - 1.
60		*/
61	<	private LinkedBlockingDeque<Integer> populatedDeque(int n) {
61	>	private static LinkedBlockingDeque<Integer> populatedDeque(int n) {
62		LinkedBlockingDeque<Integer> q =
63		new LinkedBlockingDeque<Integer>(n);
64		assertTrue(q.isEmpty());
#	Line 47 | Line 67 | public class LinkedBlockingDequeTest ext
67		assertFalse(q.isEmpty());
68		assertEquals(0, q.remainingCapacity());
69		assertEquals(n, q.size());
70	+	assertEquals((Integer) 0, q.peekFirst());
71	+	assertEquals((Integer) (n - 1), q.peekLast());
72		return q;
73		}
74
#	Line 70 | Line 92 | public class LinkedBlockingDequeTest ext
92		public void testSize() {
93		LinkedBlockingDeque q = populatedDeque(SIZE);
94		for (int i = 0; i < SIZE; ++i) {
95	<	assertEquals(SIZE-i, q.size());
95	>	assertEquals(SIZE - i, q.size());
96		q.removeFirst();
97		}
98		for (int i = 0; i < SIZE; ++i) {
#	Line 80 | Line 102 | public class LinkedBlockingDequeTest ext
102		}
103
104		/**
105	<	* offer(null) throws NPE
105	>	* offerFirst(null) throws NullPointerException
106		*/
107		public void testOfferFirstNull() {
108	+	LinkedBlockingDeque q = new LinkedBlockingDeque();
109		try {
87	–	LinkedBlockingDeque q = new LinkedBlockingDeque();
110		q.offerFirst(null);
111		shouldThrow();
112		} catch (NullPointerException success) {}
113		}
114
115		/**
116	+	* offerLast(null) throws NullPointerException
117	+	*/
118	+	public void testOfferLastNull() {
119	+	LinkedBlockingDeque q = new LinkedBlockingDeque();
120	+	try {
121	+	q.offerLast(null);
122	+	shouldThrow();
123	+	} catch (NullPointerException success) {}
124	+	}
125	+
126	+	/**
127		* OfferFirst succeeds
128		*/
129		public void testOfferFirst() {
#	Line 124 | Line 157 | public class LinkedBlockingDequeTest ext
157		*/
158		public void testPollLast() {
159		LinkedBlockingDeque q = populatedDeque(SIZE);
160	<	for (int i = SIZE-1; i >= 0; --i) {
160	>	for (int i = SIZE - 1; i >= 0; --i) {
161		assertEquals(i, q.pollLast());
162		}
163		assertNull(q.pollLast());
#	Line 163 | Line 196 | public class LinkedBlockingDequeTest ext
196		*/
197		public void testPeekLast() {
198		LinkedBlockingDeque q = populatedDeque(SIZE);
199	<	for (int i = SIZE-1; i >= 0; --i) {
199	>	for (int i = SIZE - 1; i >= 0; --i) {
200		assertEquals(i, q.peekLast());
201		assertEquals(i, q.pollLast());
202		assertTrue(q.peekLast() == null ||
#	Line 193 | Line 226 | public class LinkedBlockingDequeTest ext
226		*/
227		public void testLastElement() {
228		LinkedBlockingDeque q = populatedDeque(SIZE);
229	<	for (int i = SIZE-1; i >= 0; --i) {
229	>	for (int i = SIZE - 1; i >= 0; --i) {
230		assertEquals(i, q.getLast());
231		assertEquals(i, q.pollLast());
232		}
#	Line 253 | Line 286 | public class LinkedBlockingDequeTest ext
286		*/
287		public void testRemoveFirstOccurrence() {
288		LinkedBlockingDeque q = populatedDeque(SIZE);
289	<	for (int i = 1; i < SIZE; i+=2) {
289	>	for (int i = 1; i < SIZE; i += 2) {
290		assertTrue(q.removeFirstOccurrence(new Integer(i)));
291		}
292	<	for (int i = 0; i < SIZE; i+=2) {
292	>	for (int i = 0; i < SIZE; i += 2) {
293		assertTrue(q.removeFirstOccurrence(new Integer(i)));
294	<	assertFalse(q.removeFirstOccurrence(new Integer(i+1)));
294	>	assertFalse(q.removeFirstOccurrence(new Integer(i + 1)));
295		}
296		assertTrue(q.isEmpty());
297		}
#	Line 268 | Line 301 | public class LinkedBlockingDequeTest ext
301		*/
302		public void testRemoveLastOccurrence() {
303		LinkedBlockingDeque q = populatedDeque(SIZE);
304	<	for (int i = 1; i < SIZE; i+=2) {
304	>	for (int i = 1; i < SIZE; i += 2) {
305		assertTrue(q.removeLastOccurrence(new Integer(i)));
306		}
307	<	for (int i = 0; i < SIZE; i+=2) {
307	>	for (int i = 0; i < SIZE; i += 2) {
308		assertTrue(q.removeLastOccurrence(new Integer(i)));
309	<	assertFalse(q.removeLastOccurrence(new Integer(i+1)));
309	>	assertFalse(q.removeLastOccurrence(new Integer(i + 1)));
310		}
311		assertTrue(q.isEmpty());
312		}
#	Line 298 | Line 331 | public class LinkedBlockingDequeTest ext
331		assertSame(four, q.peekLast());
332		}
333
301	–
334		/**
335		* A new deque has the indicated capacity, or Integer.MAX_VALUE if
336		* none given
#	Line 309 | Line 341 | public class LinkedBlockingDequeTest ext
341		}
342
343		/**
344	<	* Constructor throws IAE if capacity argument nonpositive
344	>	* Constructor throws IllegalArgumentException if capacity argument nonpositive
345		*/
346		public void testConstructor2() {
347		try {
348	<	LinkedBlockingDeque q = new LinkedBlockingDeque(0);
348	>	new LinkedBlockingDeque(0);
349		shouldThrow();
350		} catch (IllegalArgumentException success) {}
351		}
352
353		/**
354	<	* Initializing from null Collection throws NPE
354	>	* Initializing from null Collection throws NullPointerException
355		*/
356		public void testConstructor3() {
357		try {
358	<	LinkedBlockingDeque q = new LinkedBlockingDeque(null);
358	>	new LinkedBlockingDeque(null);
359		shouldThrow();
360		} catch (NullPointerException success) {}
361		}
362
363		/**
364	<	* Initializing from Collection of null elements throws NPE
364	>	* Initializing from Collection of null elements throws NullPointerException
365		*/
366		public void testConstructor4() {
367	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
368		try {
369	<	Integer[] ints = new Integer[SIZE];
337	<	LinkedBlockingDeque q = new LinkedBlockingDeque(Arrays.asList(ints));
369	>	new LinkedBlockingDeque(elements);
370		shouldThrow();
371		} catch (NullPointerException success) {}
372		}
373
374		/**
375	<	* Initializing from Collection with some null elements throws NPE
375	>	* Initializing from Collection with some null elements throws
376	>	* NullPointerException
377		*/
378		public void testConstructor5() {
379	+	Integer[] ints = new Integer[SIZE];
380	+	for (int i = 0; i < SIZE - 1; ++i)
381	+	ints[i] = i;
382	+	Collection<Integer> elements = Arrays.asList(ints);
383		try {
384	<	Integer[] ints = new Integer[SIZE];
348	<	for (int i = 0; i < SIZE-1; ++i)
349	<	ints[i] = new Integer(i);
350	<	LinkedBlockingDeque q = new LinkedBlockingDeque(Arrays.asList(ints));
384	>	new LinkedBlockingDeque(elements);
385		shouldThrow();
386		} catch (NullPointerException success) {}
387		}
#	Line 358 | Line 392 | public class LinkedBlockingDequeTest ext
392		public void testConstructor6() {
393		Integer[] ints = new Integer[SIZE];
394		for (int i = 0; i < SIZE; ++i)
395	<	ints[i] = new Integer(i);
395	>	ints[i] = i;
396		LinkedBlockingDeque q = new LinkedBlockingDeque(Arrays.asList(ints));
397		for (int i = 0; i < SIZE; ++i)
398		assertEquals(ints[i], q.poll());
#	Line 383 | Line 417 | public class LinkedBlockingDequeTest ext
417		* remainingCapacity decreases on add, increases on remove
418		*/
419		public void testRemainingCapacity() {
420	<	LinkedBlockingDeque q = populatedDeque(SIZE);
420	>	BlockingQueue q = populatedDeque(SIZE);
421		for (int i = 0; i < SIZE; ++i) {
422		assertEquals(i, q.remainingCapacity());
423	<	assertEquals(SIZE-i, q.size());
424	<	q.remove();
423	>	assertEquals(SIZE, q.size() + q.remainingCapacity());
424	>	assertEquals(i, q.remove());
425		}
426		for (int i = 0; i < SIZE; ++i) {
427	<	assertEquals(SIZE-i, q.remainingCapacity());
428	<	assertEquals(i, q.size());
429	<	q.add(new Integer(i));
427	>	assertEquals(SIZE - i, q.remainingCapacity());
428	>	assertEquals(SIZE, q.size() + q.remainingCapacity());
429	>	assertTrue(q.add(i));
430		}
431		}
432
433		/**
400	–	* offer(null) throws NPE
401	–	*/
402	–	public void testOfferNull() {
403	–	try {
404	–	LinkedBlockingDeque q = new LinkedBlockingDeque(1);
405	–	q.offer(null);
406	–	shouldThrow();
407	–	} catch (NullPointerException success) {}
408	–	}
409	–
410	–	/**
411	–	* add(null) throws NPE
412	–	*/
413	–	public void testAddNull() {
414	–	try {
415	–	LinkedBlockingDeque q = new LinkedBlockingDeque(1);
416	–	q.add(null);
417	–	shouldThrow();
418	–	} catch (NullPointerException success) {}
419	–	}
420	–
421	–	/**
434		* push(null) throws NPE
435		*/
436		public void testPushNull() {
437	+	LinkedBlockingDeque q = new LinkedBlockingDeque(1);
438		try {
426	–	LinkedBlockingDeque q = new LinkedBlockingDeque(1);
439		q.push(null);
440		shouldThrow();
441		} catch (NullPointerException success) {}
#	Line 433 | Line 445 | public class LinkedBlockingDequeTest ext
445		* push succeeds if not full; throws ISE if full
446		*/
447		public void testPush() {
448	+	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
449	+	for (int i = 0; i < SIZE; ++i) {
450	+	Integer x = new Integer(i);
451	+	q.push(x);
452	+	assertEquals(x, q.peek());
453	+	}
454	+	assertEquals(0, q.remainingCapacity());
455		try {
437	–	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
438	–	for (int i = 0; i < SIZE; ++i) {
439	–	Integer I = new Integer(i);
440	–	q.push(I);
441	–	assertEquals(I, q.peek());
442	–	}
443	–	assertEquals(0, q.remainingCapacity());
456		q.push(new Integer(SIZE));
457		shouldThrow();
458		} catch (IllegalStateException success) {}
#	Line 456 | Line 468 | public class LinkedBlockingDequeTest ext
468		assertSame(four, q.peekFirst());
469		}
470
459	–
471		/**
472		* pop removes next element, or throws NSEE if empty
473		*/
#	Line 471 | Line 482 | public class LinkedBlockingDequeTest ext
482		} catch (NoSuchElementException success) {}
483		}
484
474	–
485		/**
486		* Offer succeeds if not full; fails if full
487		*/
#	Line 485 | Line 495 | public class LinkedBlockingDequeTest ext
495		* add succeeds if not full; throws ISE if full
496		*/
497		public void testAdd() {
498	+	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
499	+	for (int i = 0; i < SIZE; ++i)
500	+	assertTrue(q.add(new Integer(i)));
501	+	assertEquals(0, q.remainingCapacity());
502		try {
489	–	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
490	–	for (int i = 0; i < SIZE; ++i) {
491	–	assertTrue(q.add(new Integer(i)));
492	–	}
493	–	assertEquals(0, q.remainingCapacity());
503		q.add(new Integer(SIZE));
504		shouldThrow();
505		} catch (IllegalStateException success) {}
506		}
507
508		/**
500	–	* addAll(null) throws NPE
501	–	*/
502	–	public void testAddAll1() {
503	–	try {
504	–	LinkedBlockingDeque q = new LinkedBlockingDeque(1);
505	–	q.addAll(null);
506	–	shouldThrow();
507	–	} catch (NullPointerException success) {}
508	–	}
509	–
510	–	/**
509		* addAll(this) throws IAE
510		*/
511		public void testAddAllSelf() {
512	+	LinkedBlockingDeque q = populatedDeque(SIZE);
513		try {
515	–	LinkedBlockingDeque q = populatedDeque(SIZE);
514		q.addAll(q);
515		shouldThrow();
516		} catch (IllegalArgumentException success) {}
517		}
518
519		/**
522	–	* addAll of a collection with null elements throws NPE
523	–	*/
524	–	public void testAddAll2() {
525	–	try {
526	–	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
527	–	Integer[] ints = new Integer[SIZE];
528	–	q.addAll(Arrays.asList(ints));
529	–	shouldThrow();
530	–	} catch (NullPointerException success) {}
531	–	}
532	–
533	–	/**
520		* addAll of a collection with any null elements throws NPE after
521		* possibly adding some elements
522		*/
523		public void testAddAll3() {
524	+	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
525	+	Integer[] ints = new Integer[SIZE];
526	+	for (int i = 0; i < SIZE - 1; ++i)
527	+	ints[i] = new Integer(i);
528	+	Collection<Integer> elements = Arrays.asList(ints);
529		try {
530	<	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
540	<	Integer[] ints = new Integer[SIZE];
541	<	for (int i = 0; i < SIZE-1; ++i)
542	<	ints[i] = new Integer(i);
543	<	q.addAll(Arrays.asList(ints));
530	>	q.addAll(elements);
531		shouldThrow();
532		} catch (NullPointerException success) {}
533		}
534
535		/**
536	<	* addAll throws ISE if not enough room
536	>	* addAll throws IllegalStateException if not enough room
537		*/
538		public void testAddAll4() {
539	+	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE - 1);
540	+	Integer[] ints = new Integer[SIZE];
541	+	for (int i = 0; i < SIZE; ++i)
542	+	ints[i] = new Integer(i);
543	+	Collection<Integer> elements = Arrays.asList(ints);
544		try {
545	<	LinkedBlockingDeque q = new LinkedBlockingDeque(1);
554	<	Integer[] ints = new Integer[SIZE];
555	<	for (int i = 0; i < SIZE; ++i)
556	<	ints[i] = new Integer(i);
557	<	q.addAll(Arrays.asList(ints));
545	>	q.addAll(elements);
546		shouldThrow();
547		} catch (IllegalStateException success) {}
548		}
#	Line 574 | Line 562 | public class LinkedBlockingDequeTest ext
562		assertEquals(ints[i], q.poll());
563		}
564
577	–
578	–	/**
579	–	* put(null) throws NPE
580	–	*/
581	–	public void testPutNull() throws InterruptedException {
582	–	try {
583	–	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
584	–	q.put(null);
585	–	shouldThrow();
586	–	} catch (NullPointerException success) {}
587	–	}
588	–
565		/**
566		* all elements successfully put are contained
567		*/
568		public void testPut() throws InterruptedException {
569		LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
570		for (int i = 0; i < SIZE; ++i) {
571	<	Integer I = new Integer(i);
572	<	q.put(I);
573	<	assertTrue(q.contains(I));
571	>	Integer x = new Integer(i);
572	>	q.put(x);
573	>	assertTrue(q.contains(x));
574		}
575		assertEquals(0, q.remainingCapacity());
576		}
#	Line 604 | Line 580 | public class LinkedBlockingDequeTest ext
580		*/
581		public void testBlockingPut() throws InterruptedException {
582		final LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
583	<	Thread t = new Thread(new CheckedRunnable() {
583	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
584	>	Thread t = newStartedThread(new CheckedRunnable() {
585		public void realRun() throws InterruptedException {
586		for (int i = 0; i < SIZE; ++i)
587		q.put(i);
588		assertEquals(SIZE, q.size());
589		assertEquals(0, q.remainingCapacity());
590	+
591	+	Thread.currentThread().interrupt();
592		try {
593		q.put(99);
594		shouldThrow();
595		} catch (InterruptedException success) {}
596	+	assertFalse(Thread.interrupted());
597	+
598	+	pleaseInterrupt.countDown();
599	+	try {
600	+	q.put(99);
601	+	shouldThrow();
602	+	} catch (InterruptedException success) {}
603	+	assertFalse(Thread.interrupted());
604		}});
605
606	<	t.start();
607	<	Thread.sleep(SHORT_DELAY_MS);
606	>	await(pleaseInterrupt);
607	>	assertThreadBlocks(t, Thread.State.WAITING);
608		t.interrupt();
609	<	t.join();
609	>	awaitTermination(t);
610		assertEquals(SIZE, q.size());
611		assertEquals(0, q.remainingCapacity());
612		}
613
614		/**
615	<	* put blocks waiting for take when full
615	>	* put blocks interruptibly waiting for take when full
616		*/
617		public void testPutWithTake() throws InterruptedException {
618		final int capacity = 2;
619		final LinkedBlockingDeque q = new LinkedBlockingDeque(capacity);
620	<	Thread t = new Thread(new CheckedRunnable() {
620	>	final CountDownLatch pleaseTake = new CountDownLatch(1);
621	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
622	>	Thread t = newStartedThread(new CheckedRunnable() {
623		public void realRun() throws InterruptedException {
624	<	for (int i = 0; i < capacity + 1; i++)
624	>	for (int i = 0; i < capacity; i++)
625		q.put(i);
626	+	pleaseTake.countDown();
627	+	q.put(86);
628	+
629	+	pleaseInterrupt.countDown();
630		try {
631		q.put(99);
632		shouldThrow();
633		} catch (InterruptedException success) {}
634	+	assertFalse(Thread.interrupted());
635		}});
636
637	<	t.start();
638	<	Thread.sleep(SHORT_DELAY_MS);
645	<	assertEquals(q.remainingCapacity(), 0);
637	>	await(pleaseTake);
638	>	assertEquals(0, q.remainingCapacity());
639		assertEquals(0, q.take());
640	<	Thread.sleep(SHORT_DELAY_MS);
640	>
641	>	await(pleaseInterrupt);
642	>	assertThreadBlocks(t, Thread.State.WAITING);
643		t.interrupt();
644	<	t.join();
645	<	assertEquals(q.remainingCapacity(), 0);
644	>	awaitTermination(t);
645	>	assertEquals(0, q.remainingCapacity());
646		}
647
648		/**
#	Line 655 | Line 650 | public class LinkedBlockingDequeTest ext
650		*/
651		public void testTimedOffer() throws InterruptedException {
652		final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
653	<	Thread t = new Thread(new CheckedRunnable() {
653	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
654	>	Thread t = newStartedThread(new CheckedRunnable() {
655		public void realRun() throws InterruptedException {
656		q.put(new Object());
657		q.put(new Object());
658	<	assertFalse(q.offer(new Object(), SHORT_DELAY_MS, MILLISECONDS));
658	>	long startTime = System.nanoTime();
659	>	assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS));
660	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
661	>	pleaseInterrupt.countDown();
662		try {
663	<	q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS);
663	>	q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS);
664		shouldThrow();
665		} catch (InterruptedException success) {}
666	+	assertFalse(Thread.interrupted());
667		}});
668
669	<	t.start();
670	<	Thread.sleep(SMALL_DELAY_MS);
669	>	await(pleaseInterrupt);
670	>	assertThreadBlocks(t, Thread.State.TIMED_WAITING);
671		t.interrupt();
672	<	t.join();
672	>	awaitTermination(t);
673		}
674
675		/**
#	Line 683 | Line 683 | public class LinkedBlockingDequeTest ext
683		}
684
685		/**
686	<	* Take removes existing elements until empty, then blocks interruptibly
686	>	* take removes existing elements until empty, then blocks interruptibly
687		*/
688		public void testBlockingTake() throws InterruptedException {
689		final LinkedBlockingDeque q = populatedDeque(SIZE);
690	<	Thread t = new Thread(new CheckedRunnable() {
690	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
691	>	Thread t = newStartedThread(new CheckedRunnable() {
692		public void realRun() throws InterruptedException {
693	<	for (int i = 0; i < SIZE; ++i) {
694	<	assertEquals(i, q.take());
695	<	}
693	>	for (int i = 0; i < SIZE; i++) assertEquals(i, q.take());
694	>
695	>	Thread.currentThread().interrupt();
696		try {
697		q.take();
698		shouldThrow();
699		} catch (InterruptedException success) {}
700	+	assertFalse(Thread.interrupted());
701	+
702	+	pleaseInterrupt.countDown();
703	+	try {
704	+	q.take();
705	+	shouldThrow();
706	+	} catch (InterruptedException success) {}
707	+	assertFalse(Thread.interrupted());
708		}});
709
710	<	t.start();
711	<	Thread.sleep(SHORT_DELAY_MS);
710	>	await(pleaseInterrupt);
711	>	assertThreadBlocks(t, Thread.State.WAITING);
712		t.interrupt();
713	<	t.join();
713	>	awaitTermination(t);
714		}
715
707	–
716		/**
717		* poll succeeds unless empty
718		*/
#	Line 733 | Line 741 | public class LinkedBlockingDequeTest ext
741		public void testTimedPoll() throws InterruptedException {
742		LinkedBlockingDeque q = populatedDeque(SIZE);
743		for (int i = 0; i < SIZE; ++i) {
744	<	assertEquals(i, q.poll(SHORT_DELAY_MS, MILLISECONDS));
745	<	}
746	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
744	>	long startTime = System.nanoTime();
745	>	assertEquals(i, q.poll(LONG_DELAY_MS, MILLISECONDS));
746	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
747	>	}
748	>	long startTime = System.nanoTime();
749	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
750	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
751	>	checkEmpty(q);
752		}
753
754		/**
#	Line 744 | Line 757 | public class LinkedBlockingDequeTest ext
757		*/
758		public void testInterruptedTimedPoll() throws InterruptedException {
759		final BlockingQueue<Integer> q = populatedDeque(SIZE);
760	<	final CountDownLatch aboutToWait = new CountDownLatch(1);
760	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
761		Thread t = newStartedThread(new CheckedRunnable() {
762		public void realRun() throws InterruptedException {
763	+	long startTime = System.nanoTime();
764		for (int i = 0; i < SIZE; ++i) {
751	–	long t0 = System.nanoTime();
765		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
753	–	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
766		}
767	<	long t0 = System.nanoTime();
768	<	aboutToWait.countDown();
767	>
768	>	pleaseInterrupt.countDown();
769		try {
770	<	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
770	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
771		shouldThrow();
772	<	} catch (InterruptedException success) {
773	<	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
774	<	}
772	>	} catch (InterruptedException success) {}
773	>	assertFalse(Thread.interrupted());
774	>
775	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
776		}});
777
778	<	aboutToWait.await();
779	<	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
778	>	await(pleaseInterrupt);
779	>	assertThreadBlocks(t, Thread.State.TIMED_WAITING);
780		t.interrupt();
781	<	awaitTermination(t, MEDIUM_DELAY_MS);
781	>	awaitTermination(t);
782		checkEmpty(q);
783		}
784
785		/**
786		* putFirst(null) throws NPE
787		*/
788	<	public void testPutFirstNull() throws InterruptedException {
788	>	public void testPutFirstNull() throws InterruptedException {
789	>	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
790		try {
777	–	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
791		q.putFirst(null);
792		shouldThrow();
793		} catch (NullPointerException success) {}
794	<	}
794	>	}
795
796		/**
797		* all elements successfully putFirst are contained
798		*/
799	<	public void testPutFirst() throws InterruptedException {
800	<	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
801	<	for (int i = 0; i < SIZE; ++i) {
802	<	Integer I = new Integer(i);
803	<	q.putFirst(I);
804	<	assertTrue(q.contains(I));
805	<	}
806	<	assertEquals(0, q.remainingCapacity());
799	>	public void testPutFirst() throws InterruptedException {
800	>	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
801	>	for (int i = 0; i < SIZE; ++i) {
802	>	Integer x = new Integer(i);
803	>	q.putFirst(x);
804	>	assertTrue(q.contains(x));
805	>	}
806	>	assertEquals(0, q.remainingCapacity());
807		}
808
809		/**
#	Line 798 | Line 811 | public class LinkedBlockingDequeTest ext
811		*/
812		public void testBlockingPutFirst() throws InterruptedException {
813		final LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
814	<	Thread t = new Thread(new CheckedRunnable() {
814	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
815	>	Thread t = newStartedThread(new CheckedRunnable() {
816		public void realRun() throws InterruptedException {
817		for (int i = 0; i < SIZE; ++i)
818		q.putFirst(i);
819		assertEquals(SIZE, q.size());
820		assertEquals(0, q.remainingCapacity());
821	+
822	+	Thread.currentThread().interrupt();
823		try {
824		q.putFirst(99);
825		shouldThrow();
826		} catch (InterruptedException success) {}
827	+	assertFalse(Thread.interrupted());
828	+
829	+	pleaseInterrupt.countDown();
830	+	try {
831	+	q.putFirst(99);
832	+	shouldThrow();
833	+	} catch (InterruptedException success) {}
834	+	assertFalse(Thread.interrupted());
835		}});
836
837	<	t.start();
838	<	Thread.sleep(SHORT_DELAY_MS);
837	>	await(pleaseInterrupt);
838	>	assertThreadBlocks(t, Thread.State.WAITING);
839		t.interrupt();
840	<	t.join();
840	>	awaitTermination(t);
841		assertEquals(SIZE, q.size());
842		assertEquals(0, q.remainingCapacity());
843		}
844
845		/**
846	<	* putFirst blocks waiting for take when full
846	>	* putFirst blocks interruptibly waiting for take when full
847		*/
848		public void testPutFirstWithTake() throws InterruptedException {
849		final int capacity = 2;
850		final LinkedBlockingDeque q = new LinkedBlockingDeque(capacity);
851	<	Thread t = new Thread(new CheckedRunnable() {
851	>	final CountDownLatch pleaseTake = new CountDownLatch(1);
852	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
853	>	Thread t = newStartedThread(new CheckedRunnable() {
854		public void realRun() throws InterruptedException {
855	<	for (int i = 0; i < capacity + 1; i++)
855	>	for (int i = 0; i < capacity; i++)
856		q.putFirst(i);
857	+	pleaseTake.countDown();
858	+	q.putFirst(86);
859	+
860	+	pleaseInterrupt.countDown();
861		try {
862		q.putFirst(99);
863		shouldThrow();
864		} catch (InterruptedException success) {}
865	+	assertFalse(Thread.interrupted());
866		}});
867
868	<	t.start();
869	<	Thread.sleep(SHORT_DELAY_MS);
839	<	assertEquals(q.remainingCapacity(), 0);
868	>	await(pleaseTake);
869	>	assertEquals(0, q.remainingCapacity());
870		assertEquals(capacity - 1, q.take());
871	<	Thread.sleep(SHORT_DELAY_MS);
871	>
872	>	await(pleaseInterrupt);
873	>	assertThreadBlocks(t, Thread.State.WAITING);
874		t.interrupt();
875	<	t.join();
876	<	assertEquals(q.remainingCapacity(), 0);
875	>	awaitTermination(t);
876	>	assertEquals(0, q.remainingCapacity());
877		}
878
879		/**
#	Line 849 | Line 881 | public class LinkedBlockingDequeTest ext
881		*/
882		public void testTimedOfferFirst() throws InterruptedException {
883		final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
884	<	Thread t = new Thread(new CheckedRunnable() {
884	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
885	>	Thread t = newStartedThread(new CheckedRunnable() {
886		public void realRun() throws InterruptedException {
887		q.putFirst(new Object());
888		q.putFirst(new Object());
889	<	assertFalse(q.offerFirst(new Object(), SHORT_DELAY_MS, MILLISECONDS));
889	>	long startTime = System.nanoTime();
890	>	assertFalse(q.offerFirst(new Object(), timeoutMillis(), MILLISECONDS));
891	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
892	>	pleaseInterrupt.countDown();
893		try {
894	<	q.offerFirst(new Object(), LONG_DELAY_MS, MILLISECONDS);
894	>	q.offerFirst(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS);
895		shouldThrow();
896		} catch (InterruptedException success) {}
897	+	assertFalse(Thread.interrupted());
898		}});
899
900	<	t.start();
901	<	Thread.sleep(SMALL_DELAY_MS);
900	>	await(pleaseInterrupt);
901	>	assertThreadBlocks(t, Thread.State.TIMED_WAITING);
902		t.interrupt();
903	<	t.join();
903	>	awaitTermination(t);
904		}
905
906		/**
#	Line 877 | Line 914 | public class LinkedBlockingDequeTest ext
914		}
915
916		/**
917	<	* takeFirst blocks interruptibly when empty
917	>	* takeFirst() blocks interruptibly when empty
918		*/
919	<	public void testTakeFirstFromEmpty() throws InterruptedException {
920	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
921	<	Thread t = new ThreadShouldThrow(InterruptedException.class) {
922	<	public void realRun() throws InterruptedException {
923	<	q.takeFirst();
924	<	}};
919	>	public void testTakeFirstFromEmptyBlocksInterruptibly() {
920	>	final BlockingDeque q = new LinkedBlockingDeque();
921	>	final CountDownLatch threadStarted = new CountDownLatch(1);
922	>	Thread t = newStartedThread(new CheckedRunnable() {
923	>	public void realRun() {
924	>	threadStarted.countDown();
925	>	try {
926	>	q.takeFirst();
927	>	shouldThrow();
928	>	} catch (InterruptedException success) {}
929	>	assertFalse(Thread.interrupted());
930	>	}});
931
932	<	t.start();
933	<	Thread.sleep(SHORT_DELAY_MS);
932	>	await(threadStarted);
933	>	assertThreadBlocks(t, Thread.State.WAITING);
934		t.interrupt();
935	<	t.join();
935	>	awaitTermination(t);
936	>	}
937	>
938	>	/**
939	>	* takeFirst() throws InterruptedException immediately if interrupted
940	>	* before waiting
941	>	*/
942	>	public void testTakeFirstFromEmptyAfterInterrupt() {
943	>	final BlockingDeque q = new LinkedBlockingDeque();
944	>	Thread t = newStartedThread(new CheckedRunnable() {
945	>	public void realRun() {
946	>	Thread.currentThread().interrupt();
947	>	try {
948	>	q.takeFirst();
949	>	shouldThrow();
950	>	} catch (InterruptedException success) {}
951	>	assertFalse(Thread.interrupted());
952	>	}});
953	>
954	>	awaitTermination(t);
955	>	}
956	>
957	>	/**
958	>	* takeLast() blocks interruptibly when empty
959	>	*/
960	>	public void testTakeLastFromEmptyBlocksInterruptibly() {
961	>	final BlockingDeque q = new LinkedBlockingDeque();
962	>	final CountDownLatch threadStarted = new CountDownLatch(1);
963	>	Thread t = newStartedThread(new CheckedRunnable() {
964	>	public void realRun() {
965	>	threadStarted.countDown();
966	>	try {
967	>	q.takeLast();
968	>	shouldThrow();
969	>	} catch (InterruptedException success) {}
970	>	assertFalse(Thread.interrupted());
971	>	}});
972	>
973	>	await(threadStarted);
974	>	assertThreadBlocks(t, Thread.State.WAITING);
975	>	t.interrupt();
976	>	awaitTermination(t);
977		}
978
979		/**
980	<	* TakeFirst removes existing elements until empty, then blocks interruptibly
980	>	* takeLast() throws InterruptedException immediately if interrupted
981	>	* before waiting
982	>	*/
983	>	public void testTakeLastFromEmptyAfterInterrupt() {
984	>	final BlockingDeque q = new LinkedBlockingDeque();
985	>	Thread t = newStartedThread(new CheckedRunnable() {
986	>	public void realRun() {
987	>	Thread.currentThread().interrupt();
988	>	try {
989	>	q.takeLast();
990	>	shouldThrow();
991	>	} catch (InterruptedException success) {}
992	>	assertFalse(Thread.interrupted());
993	>	}});
994	>
995	>	awaitTermination(t);
996	>	}
997	>
998	>	/**
999	>	* takeFirst removes existing elements until empty, then blocks interruptibly
1000		*/
1001		public void testBlockingTakeFirst() throws InterruptedException {
1002		final LinkedBlockingDeque q = populatedDeque(SIZE);
1003	<	Thread t = new Thread(new CheckedRunnable() {
1003	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
1004	>	Thread t = newStartedThread(new CheckedRunnable() {
1005		public void realRun() throws InterruptedException {
1006	<	for (int i = 0; i < SIZE; ++i)
1007	<	assertEquals(i, q.takeFirst());
1006	>	for (int i = 0; i < SIZE; i++) assertEquals(i, q.takeFirst());
1007	>
1008	>	Thread.currentThread().interrupt();
1009		try {
1010		q.takeFirst();
1011		shouldThrow();
1012		} catch (InterruptedException success) {}
1013	+	assertFalse(Thread.interrupted());
1014	+
1015	+	pleaseInterrupt.countDown();
1016	+	try {
1017	+	q.takeFirst();
1018	+	shouldThrow();
1019	+	} catch (InterruptedException success) {}
1020	+	assertFalse(Thread.interrupted());
1021		}});
1022
1023	<	t.start();
1024	<	Thread.sleep(SHORT_DELAY_MS);
1023	>	await(pleaseInterrupt);
1024	>	assertThreadBlocks(t, Thread.State.WAITING);
1025		t.interrupt();
1026	<	t.join();
1026	>	awaitTermination(t);
1027		}
1028
916	–
1029		/**
1030		* timed pollFirst with zero timeout succeeds when non-empty, else times out
1031		*/
#	Line 931 | Line 1043 | public class LinkedBlockingDequeTest ext
1043		public void testTimedPollFirst() throws InterruptedException {
1044		LinkedBlockingDeque q = populatedDeque(SIZE);
1045		for (int i = 0; i < SIZE; ++i) {
1046	<	assertEquals(i, q.pollFirst(SHORT_DELAY_MS, MILLISECONDS));
1047	<	}
1048	<	assertNull(q.pollFirst(SHORT_DELAY_MS, MILLISECONDS));
1046	>	long startTime = System.nanoTime();
1047	>	assertEquals(i, q.pollFirst(LONG_DELAY_MS, MILLISECONDS));
1048	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1049	>	}
1050	>	long startTime = System.nanoTime();
1051	>	assertNull(q.pollFirst(timeoutMillis(), MILLISECONDS));
1052	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
1053	>	checkEmpty(q);
1054		}
1055
1056		/**
#	Line 941 | Line 1058 | public class LinkedBlockingDequeTest ext
1058		* returning timeout status
1059		*/
1060		public void testInterruptedTimedPollFirst() throws InterruptedException {
1061	<	Thread t = new Thread(new CheckedRunnable() {
1061	>	final LinkedBlockingDeque q = populatedDeque(SIZE);
1062	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
1063	>	Thread t = newStartedThread(new CheckedRunnable() {
1064		public void realRun() throws InterruptedException {
1065	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1065	>	long startTime = System.nanoTime();
1066		for (int i = 0; i < SIZE; ++i) {
1067	<	assertEquals(i, q.pollFirst(SHORT_DELAY_MS, MILLISECONDS));
1067	>	assertEquals(i, q.pollFirst(LONG_DELAY_MS, MILLISECONDS));
1068		}
1069	+
1070	+	Thread.currentThread().interrupt();
1071		try {
1072	<	q.pollFirst(SMALL_DELAY_MS, MILLISECONDS);
1072	>	q.pollFirst(LONG_DELAY_MS, MILLISECONDS);
1073		shouldThrow();
1074		} catch (InterruptedException success) {}
1075	+	assertFalse(Thread.interrupted());
1076	+
1077	+	pleaseInterrupt.countDown();
1078	+	try {
1079	+	q.pollFirst(LONG_DELAY_MS, MILLISECONDS);
1080	+	shouldThrow();
1081	+	} catch (InterruptedException success) {}
1082	+	assertFalse(Thread.interrupted());
1083	+
1084	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1085		}});
1086
1087	<	t.start();
1088	<	Thread.sleep(SHORT_DELAY_MS);
1087	>	await(pleaseInterrupt);
1088	>	assertThreadBlocks(t, Thread.State.TIMED_WAITING);
1089		t.interrupt();
1090	<	t.join();
1090	>	awaitTermination(t);
1091		}
1092
1093		/**
#	Line 965 | Line 1096 | public class LinkedBlockingDequeTest ext
1096		*/
1097		public void testTimedPollFirstWithOfferFirst() throws InterruptedException {
1098		final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
1099	<	Thread t = new Thread(new CheckedRunnable() {
1099	>	final CheckedBarrier barrier = new CheckedBarrier(2);
1100	>	Thread t = newStartedThread(new CheckedRunnable() {
1101		public void realRun() throws InterruptedException {
1102	<	assertNull(q.pollFirst(SHORT_DELAY_MS, MILLISECONDS));
1102	>	long startTime = System.nanoTime();
1103	>	assertNull(q.pollFirst(timeoutMillis(), MILLISECONDS));
1104	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
1105	>
1106	>	barrier.await();
1107	>
1108		assertSame(zero, q.pollFirst(LONG_DELAY_MS, MILLISECONDS));
1109	+
1110	+	Thread.currentThread().interrupt();
1111		try {
1112		q.pollFirst(LONG_DELAY_MS, MILLISECONDS);
1113		shouldThrow();
1114		} catch (InterruptedException success) {}
1115	+
1116	+	barrier.await();
1117	+	try {
1118	+	q.pollFirst(LONG_DELAY_MS, MILLISECONDS);
1119	+	shouldThrow();
1120	+	} catch (InterruptedException success) {}
1121	+	assertFalse(Thread.interrupted());
1122	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1123		}});
1124
1125	<	t.start();
1126	<	Thread.sleep(SMALL_DELAY_MS);
1127	<	assertTrue(q.offerFirst(zero, SHORT_DELAY_MS, MILLISECONDS));
1125	>	barrier.await();
1126	>	long startTime = System.nanoTime();
1127	>	assertTrue(q.offerFirst(zero, LONG_DELAY_MS, MILLISECONDS));
1128	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1129	>	barrier.await();
1130	>	assertThreadBlocks(t, Thread.State.TIMED_WAITING);
1131		t.interrupt();
1132	<	t.join();
1132	>	awaitTermination(t);
1133		}
1134
1135		/**
1136		* putLast(null) throws NPE
1137		*/
1138	<	public void testPutLastNull() throws InterruptedException {
1138	>	public void testPutLastNull() throws InterruptedException {
1139	>	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
1140		try {
990	–	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
1141		q.putLast(null);
1142		shouldThrow();
1143		} catch (NullPointerException success) {}
1144	<	}
1144	>	}
1145
1146		/**
1147		* all elements successfully putLast are contained
1148		*/
1149	<	public void testPutLast() throws InterruptedException {
1150	<	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
1151	<	for (int i = 0; i < SIZE; ++i) {
1152	<	Integer I = new Integer(i);
1153	<	q.putLast(I);
1154	<	assertTrue(q.contains(I));
1155	<	}
1156	<	assertEquals(0, q.remainingCapacity());
1149	>	public void testPutLast() throws InterruptedException {
1150	>	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
1151	>	for (int i = 0; i < SIZE; ++i) {
1152	>	Integer x = new Integer(i);
1153	>	q.putLast(x);
1154	>	assertTrue(q.contains(x));
1155	>	}
1156	>	assertEquals(0, q.remainingCapacity());
1157		}
1158
1159		/**
#	Line 1011 | Line 1161 | public class LinkedBlockingDequeTest ext
1161		*/
1162		public void testBlockingPutLast() throws InterruptedException {
1163		final LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
1164	<	Thread t = new Thread(new CheckedRunnable() {
1164	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
1165	>	Thread t = newStartedThread(new CheckedRunnable() {
1166		public void realRun() throws InterruptedException {
1167		for (int i = 0; i < SIZE; ++i)
1168		q.putLast(i);
1169		assertEquals(SIZE, q.size());
1170		assertEquals(0, q.remainingCapacity());
1171	+
1172	+	Thread.currentThread().interrupt();
1173	+	try {
1174	+	q.putLast(99);
1175	+	shouldThrow();
1176	+	} catch (InterruptedException success) {}
1177	+	assertFalse(Thread.interrupted());
1178	+
1179	+	pleaseInterrupt.countDown();
1180		try {
1181		q.putLast(99);
1182		shouldThrow();
1183		} catch (InterruptedException success) {}
1184	+	assertFalse(Thread.interrupted());
1185		}});
1186
1187	<	t.start();
1188	<	Thread.sleep(SHORT_DELAY_MS);
1187	>	await(pleaseInterrupt);
1188	>	assertThreadBlocks(t, Thread.State.WAITING);
1189		t.interrupt();
1190	<	t.join();
1190	>	awaitTermination(t);
1191		assertEquals(SIZE, q.size());
1192		assertEquals(0, q.remainingCapacity());
1193		}
1194
1195		/**
1196	<	* putLast blocks waiting for take when full
1196	>	* putLast blocks interruptibly waiting for take when full
1197		*/
1198		public void testPutLastWithTake() throws InterruptedException {
1199		final int capacity = 2;
1200		final LinkedBlockingDeque q = new LinkedBlockingDeque(capacity);
1201	<	Thread t = new Thread(new CheckedRunnable() {
1201	>	final CountDownLatch pleaseTake = new CountDownLatch(1);
1202	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
1203	>	Thread t = newStartedThread(new CheckedRunnable() {
1204		public void realRun() throws InterruptedException {
1205	<	for (int i = 0; i < capacity + 1; i++)
1205	>	for (int i = 0; i < capacity; i++)
1206		q.putLast(i);
1207	+	pleaseTake.countDown();
1208	+	q.putLast(86);
1209	+
1210	+	pleaseInterrupt.countDown();
1211		try {
1212		q.putLast(99);
1213		shouldThrow();
1214		} catch (InterruptedException success) {}
1215	+	assertFalse(Thread.interrupted());
1216		}});
1217
1218	<	t.start();
1219	<	Thread.sleep(SHORT_DELAY_MS);
1052	<	assertEquals(q.remainingCapacity(), 0);
1218	>	await(pleaseTake);
1219	>	assertEquals(0, q.remainingCapacity());
1220		assertEquals(0, q.take());
1221	<	Thread.sleep(SHORT_DELAY_MS);
1221	>
1222	>	await(pleaseInterrupt);
1223	>	assertThreadBlocks(t, Thread.State.WAITING);
1224		t.interrupt();
1225	<	t.join();
1226	<	assertEquals(q.remainingCapacity(), 0);
1225	>	awaitTermination(t);
1226	>	assertEquals(0, q.remainingCapacity());
1227		}
1228
1229		/**
#	Line 1062 | Line 1231 | public class LinkedBlockingDequeTest ext
1231		*/
1232		public void testTimedOfferLast() throws InterruptedException {
1233		final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
1234	<	Thread t = new Thread(new CheckedRunnable() {
1234	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
1235	>	Thread t = newStartedThread(new CheckedRunnable() {
1236		public void realRun() throws InterruptedException {
1237		q.putLast(new Object());
1238		q.putLast(new Object());
1239	<	assertFalse(q.offerLast(new Object(), SHORT_DELAY_MS, MILLISECONDS));
1239	>	long startTime = System.nanoTime();
1240	>	assertFalse(q.offerLast(new Object(), timeoutMillis(), MILLISECONDS));
1241	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
1242	>	pleaseInterrupt.countDown();
1243		try {
1244	<	q.offerLast(new Object(), LONG_DELAY_MS, MILLISECONDS);
1244	>	q.offerLast(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS);
1245		shouldThrow();
1246		} catch (InterruptedException success) {}
1247		}});
1248
1249	<	t.start();
1250	<	Thread.sleep(SMALL_DELAY_MS);
1249	>	await(pleaseInterrupt);
1250	>	assertThreadBlocks(t, Thread.State.TIMED_WAITING);
1251		t.interrupt();
1252	<	t.join();
1252	>	awaitTermination(t);
1253		}
1254
1255		/**
#	Line 1085 | Line 1258 | public class LinkedBlockingDequeTest ext
1258		public void testTakeLast() throws InterruptedException {
1259		LinkedBlockingDeque q = populatedDeque(SIZE);
1260		for (int i = 0; i < SIZE; ++i) {
1261	<	assertEquals(SIZE-i-1, q.takeLast());
1261	>	assertEquals(SIZE - i - 1, q.takeLast());
1262		}
1263		}
1264
1265		/**
1266	<	* takeLast blocks interruptibly when empty
1094	<	*/
1095	<	public void testTakeLastFromEmpty() throws InterruptedException {
1096	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
1097	<	Thread t = new ThreadShouldThrow(InterruptedException.class) {
1098	<	public void realRun() throws InterruptedException {
1099	<	q.takeLast();
1100	<	}};
1101	<
1102	<	t.start();
1103	<	Thread.sleep(SHORT_DELAY_MS);
1104	<	t.interrupt();
1105	<	t.join();
1106	<	}
1107	<
1108	<	/**
1109	<	* TakeLast removes existing elements until empty, then blocks interruptibly
1266	>	* takeLast removes existing elements until empty, then blocks interruptibly
1267		*/
1268		public void testBlockingTakeLast() throws InterruptedException {
1269		final LinkedBlockingDeque q = populatedDeque(SIZE);
1270	<	Thread t = new Thread(new CheckedRunnable() {
1270	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
1271	>	Thread t = newStartedThread(new CheckedRunnable() {
1272		public void realRun() throws InterruptedException {
1273	<	for (int i = 0; i < SIZE; ++i)
1274	<	assertEquals(SIZE - 1 - i, q.takeLast());
1273	>	for (int i = 0; i < SIZE; i++)
1274	>	assertEquals(SIZE - i - 1, q.takeLast());
1275	>
1276	>	Thread.currentThread().interrupt();
1277	>	try {
1278	>	q.takeLast();
1279	>	shouldThrow();
1280	>	} catch (InterruptedException success) {}
1281	>	assertFalse(Thread.interrupted());
1282	>
1283	>	pleaseInterrupt.countDown();
1284		try {
1285		q.takeLast();
1286		shouldThrow();
1287		} catch (InterruptedException success) {}
1288	+	assertFalse(Thread.interrupted());
1289		}});
1290
1291	<	t.start();
1292	<	Thread.sleep(SHORT_DELAY_MS);
1291	>	await(pleaseInterrupt);
1292	>	assertThreadBlocks(t, Thread.State.WAITING);
1293		t.interrupt();
1294	<	t.join();
1294	>	awaitTermination(t);
1295		}
1296
1297		/**
#	Line 1132 | Line 1300 | public class LinkedBlockingDequeTest ext
1300		public void testTimedPollLast0() throws InterruptedException {
1301		LinkedBlockingDeque q = populatedDeque(SIZE);
1302		for (int i = 0; i < SIZE; ++i) {
1303	<	assertEquals(SIZE-i-1, q.pollLast(0, MILLISECONDS));
1303	>	assertEquals(SIZE - i - 1, q.pollLast(0, MILLISECONDS));
1304		}
1305		assertNull(q.pollLast(0, MILLISECONDS));
1306		}
#	Line 1143 | Line 1311 | public class LinkedBlockingDequeTest ext
1311		public void testTimedPollLast() throws InterruptedException {
1312		LinkedBlockingDeque q = populatedDeque(SIZE);
1313		for (int i = 0; i < SIZE; ++i) {
1314	<	assertEquals(SIZE-i-1, q.pollLast(SHORT_DELAY_MS, MILLISECONDS));
1315	<	}
1316	<	assertNull(q.pollLast(SHORT_DELAY_MS, MILLISECONDS));
1314	>	long startTime = System.nanoTime();
1315	>	assertEquals(SIZE - i - 1, q.pollLast(LONG_DELAY_MS, MILLISECONDS));
1316	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1317	>	}
1318	>	long startTime = System.nanoTime();
1319	>	assertNull(q.pollLast(timeoutMillis(), MILLISECONDS));
1320	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
1321	>	checkEmpty(q);
1322		}
1323
1324		/**
#	Line 1153 | Line 1326 | public class LinkedBlockingDequeTest ext
1326		* returning timeout status
1327		*/
1328		public void testInterruptedTimedPollLast() throws InterruptedException {
1329	<	Thread t = new Thread(new CheckedRunnable() {
1329	>	final LinkedBlockingDeque q = populatedDeque(SIZE);
1330	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
1331	>	Thread t = newStartedThread(new CheckedRunnable() {
1332		public void realRun() throws InterruptedException {
1333	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1333	>	long startTime = System.nanoTime();
1334		for (int i = 0; i < SIZE; ++i) {
1335	<	assertEquals(SIZE-i-1, q.pollLast(SHORT_DELAY_MS, MILLISECONDS));
1335	>	assertEquals(SIZE - i - 1,
1336	>	q.pollLast(LONG_DELAY_MS, MILLISECONDS));
1337		}
1338	+
1339	+	Thread.currentThread().interrupt();
1340		try {
1341	<	q.pollLast(SMALL_DELAY_MS, MILLISECONDS);
1341	>	q.pollLast(LONG_DELAY_MS, MILLISECONDS);
1342		shouldThrow();
1343		} catch (InterruptedException success) {}
1344	+	assertFalse(Thread.interrupted());
1345	+
1346	+	pleaseInterrupt.countDown();
1347	+	try {
1348	+	q.pollLast(LONG_DELAY_MS, MILLISECONDS);
1349	+	shouldThrow();
1350	+	} catch (InterruptedException success) {}
1351	+	assertFalse(Thread.interrupted());
1352	+
1353	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1354		}});
1355
1356	<	t.start();
1357	<	Thread.sleep(SHORT_DELAY_MS);
1356	>	await(pleaseInterrupt);
1357	>	assertThreadBlocks(t, Thread.State.TIMED_WAITING);
1358		t.interrupt();
1359	<	t.join();
1359	>	awaitTermination(t);
1360	>	checkEmpty(q);
1361		}
1362
1363		/**
#	Line 1177 | Line 1366 | public class LinkedBlockingDequeTest ext
1366		*/
1367		public void testTimedPollWithOfferLast() throws InterruptedException {
1368		final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
1369	<	Thread t = new Thread(new CheckedRunnable() {
1369	>	final CheckedBarrier barrier = new CheckedBarrier(2);
1370	>	Thread t = newStartedThread(new CheckedRunnable() {
1371		public void realRun() throws InterruptedException {
1372	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
1372	>	long startTime = System.nanoTime();
1373	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
1374	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
1375	>
1376	>	barrier.await();
1377	>
1378		assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS));
1379	+
1380	+	Thread.currentThread().interrupt();
1381		try {
1382		q.poll(LONG_DELAY_MS, MILLISECONDS);
1383		shouldThrow();
1384		} catch (InterruptedException success) {}
1385	+	assertFalse(Thread.interrupted());
1386	+
1387	+	barrier.await();
1388	+	try {
1389	+	q.poll(LONG_DELAY_MS, MILLISECONDS);
1390	+	shouldThrow();
1391	+	} catch (InterruptedException success) {}
1392	+	assertFalse(Thread.interrupted());
1393	+
1394	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1395		}});
1396
1397	<	t.start();
1398	<	Thread.sleep(SMALL_DELAY_MS);
1399	<	assertTrue(q.offerLast(zero, SHORT_DELAY_MS, MILLISECONDS));
1397	>	barrier.await();
1398	>	long startTime = System.nanoTime();
1399	>	assertTrue(q.offerLast(zero, LONG_DELAY_MS, MILLISECONDS));
1400	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1401	>
1402	>	barrier.await();
1403	>	assertThreadBlocks(t, Thread.State.TIMED_WAITING);
1404		t.interrupt();
1405	<	t.join();
1405	>	awaitTermination(t);
1406		}
1407
1197	–
1408		/**
1409		* element returns next element, or throws NSEE if empty
1410		*/
#	Line 1211 | Line 1421 | public class LinkedBlockingDequeTest ext
1421		}
1422
1423		/**
1214	–	* remove(x) removes x and returns true if present
1215	–	*/
1216	–	public void testRemoveElement() {
1217	–	LinkedBlockingDeque q = populatedDeque(SIZE);
1218	–	for (int i = 1; i < SIZE; i+=2) {
1219	–	assertTrue(q.contains(i));
1220	–	assertTrue(q.remove(i));
1221	–	assertFalse(q.contains(i));
1222	–	assertTrue(q.contains(i-1));
1223	–	}
1224	–	for (int i = 0; i < SIZE; i+=2) {
1225	–	assertTrue(q.contains(i));
1226	–	assertTrue(q.remove(i));
1227	–	assertFalse(q.contains(i));
1228	–	assertFalse(q.remove(i+1));
1229	–	assertFalse(q.contains(i+1));
1230	–	}
1231	–	assertTrue(q.isEmpty());
1232	–	}
1233	–
1234	–	/**
1424		* contains(x) reports true when elements added but not yet removed
1425		*/
1426		public void testContains() {
#	Line 1287 | Line 1476 | public class LinkedBlockingDequeTest ext
1476		assertTrue(changed);
1477
1478		assertTrue(q.containsAll(p));
1479	<	assertEquals(SIZE-i, q.size());
1479	>	assertEquals(SIZE - i, q.size());
1480		p.remove();
1481		}
1482		}
#	Line 1300 | Line 1489 | public class LinkedBlockingDequeTest ext
1489		LinkedBlockingDeque q = populatedDeque(SIZE);
1490		LinkedBlockingDeque p = populatedDeque(i);
1491		assertTrue(q.removeAll(p));
1492	<	assertEquals(SIZE-i, q.size());
1492	>	assertEquals(SIZE - i, q.size());
1493		for (int j = 0; j < i; ++j) {
1494	<	Integer I = (Integer)(p.remove());
1495	<	assertFalse(q.contains(I));
1494	>	Integer x = (Integer)(p.remove());
1495	>	assertFalse(q.contains(x));
1496		}
1497		}
1498		}
#	Line 1311 | Line 1500 | public class LinkedBlockingDequeTest ext
1500		/**
1501		* toArray contains all elements in FIFO order
1502		*/
1503	<	public void testToArray() throws InterruptedException{
1503	>	public void testToArray() throws InterruptedException {
1504		LinkedBlockingDeque q = populatedDeque(SIZE);
1505		Object[] o = q.toArray();
1506		for (int i = 0; i < o.length; i++)
#	Line 1331 | Line 1520 | public class LinkedBlockingDequeTest ext
1520		}
1521
1522		/**
1334	–	* toArray(null) throws NullPointerException
1335	–	*/
1336	–	public void testToArray_NullArg() {
1337	–	LinkedBlockingDeque q = populatedDeque(SIZE);
1338	–	try {
1339	–	q.toArray(null);
1340	–	shouldThrow();
1341	–	} catch (NullPointerException success) {}
1342	–	}
1343	–
1344	–	/**
1523		* toArray(incompatible array type) throws ArrayStoreException
1524		*/
1525		public void testToArray1_BadArg() {
#	Line 1352 | Line 1530 | public class LinkedBlockingDequeTest ext
1530		} catch (ArrayStoreException success) {}
1531		}
1532
1355	–
1533		/**
1534		* iterator iterates through all elements
1535		*/
1536		public void testIterator() throws InterruptedException {
1537		LinkedBlockingDeque q = populatedDeque(SIZE);
1538		Iterator it = q.iterator();
1539	<	while (it.hasNext()) {
1539	>	int i;
1540	>	for (i = 0; it.hasNext(); i++)
1541	>	assertTrue(q.contains(it.next()));
1542	>	assertEquals(i, SIZE);
1543	>	assertIteratorExhausted(it);
1544	>
1545	>	it = q.iterator();
1546	>	for (i = 0; it.hasNext(); i++)
1547		assertEquals(it.next(), q.take());
1548	<	}
1548	>	assertEquals(i, SIZE);
1549	>	assertIteratorExhausted(it);
1550	>	}
1551	>
1552	>	/**
1553	>	* iterator of empty collection has no elements
1554	>	*/
1555	>	public void testEmptyIterator() {
1556	>	Deque c = new LinkedBlockingDeque();
1557	>	assertIteratorExhausted(c.iterator());
1558	>	assertIteratorExhausted(c.descendingIterator());
1559		}
1560
1561		/**
#	Line 1383 | Line 1577 | public class LinkedBlockingDequeTest ext
1577		assertFalse(it.hasNext());
1578		}
1579
1386	–
1580		/**
1581		* iterator ordering is FIFO
1582		*/
#	Line 1415 | Line 1608 | public class LinkedBlockingDequeTest ext
1608		assertEquals(0, q.size());
1609		}
1610
1418	–
1611		/**
1612		* Descending iterator iterates through all elements
1613		*/
#	Line 1478 | Line 1670 | public class LinkedBlockingDequeTest ext
1670		}
1671		}
1672
1481	–
1673		/**
1674		* toString contains toStrings of elements
1675		*/
#	Line 1486 | Line 1677 | public class LinkedBlockingDequeTest ext
1677		LinkedBlockingDeque q = populatedDeque(SIZE);
1678		String s = q.toString();
1679		for (int i = 0; i < SIZE; ++i) {
1680	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
1680	>	assertTrue(s.contains(String.valueOf(i)));
1681		}
1682		}
1683
1493	–
1684		/**
1685		* offer transfers elements across Executor tasks
1686		*/
#	Line 1498 | Line 1688 | public class LinkedBlockingDequeTest ext
1688		final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
1689		q.add(one);
1690		q.add(two);
1691	<	ExecutorService executor = Executors.newFixedThreadPool(2);
1692	<	executor.execute(new CheckedRunnable() {
1693	<	public void realRun() throws InterruptedException {
1694	<	assertFalse(q.offer(three));
1695	<	assertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS));
1696	<	assertEquals(0, q.remainingCapacity());
1697	<	}});
1698	<
1699	<	executor.execute(new CheckedRunnable() {
1700	<	public void realRun() throws InterruptedException {
1701	<	Thread.sleep(SMALL_DELAY_MS);
1702	<	assertSame(one, q.take());
1703	<	}});
1704	<
1705	<	joinPool(executor);
1691	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
1692	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
1693	>	try (PoolCleaner cleaner = cleaner(executor)) {
1694	>	executor.execute(new CheckedRunnable() {
1695	>	public void realRun() throws InterruptedException {
1696	>	assertFalse(q.offer(three));
1697	>	threadsStarted.await();
1698	>	assertTrue(q.offer(three, LONG_DELAY_MS, MILLISECONDS));
1699	>	assertEquals(0, q.remainingCapacity());
1700	>	}});
1701	>
1702	>	executor.execute(new CheckedRunnable() {
1703	>	public void realRun() throws InterruptedException {
1704	>	threadsStarted.await();
1705	>	assertSame(one, q.take());
1706	>	}});
1707	>	}
1708		}
1709
1710		/**
1711	<	* poll retrieves elements across Executor threads
1711	>	* timed poll retrieves elements across Executor threads
1712		*/
1713		public void testPollInExecutor() {
1714		final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
1715	<	ExecutorService executor = Executors.newFixedThreadPool(2);
1716	<	executor.execute(new CheckedRunnable() {
1717	<	public void realRun() throws InterruptedException {
1718	<	assertNull(q.poll());
1719	<	assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
1720	<	assertTrue(q.isEmpty());
1721	<	}});
1722	<
1723	<	executor.execute(new CheckedRunnable() {
1724	<	public void realRun() throws InterruptedException {
1725	<	Thread.sleep(SMALL_DELAY_MS);
1726	<	q.put(one);
1727	<	}});
1728	<
1729	<	joinPool(executor);
1715	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
1716	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
1717	>	try (PoolCleaner cleaner = cleaner(executor)) {
1718	>	executor.execute(new CheckedRunnable() {
1719	>	public void realRun() throws InterruptedException {
1720	>	assertNull(q.poll());
1721	>	threadsStarted.await();
1722	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
1723	>	checkEmpty(q);
1724	>	}});
1725	>
1726	>	executor.execute(new CheckedRunnable() {
1727	>	public void realRun() throws InterruptedException {
1728	>	threadsStarted.await();
1729	>	q.put(one);
1730	>	}});
1731	>	}
1732		}
1733
1734		/**
1735		* A deserialized serialized deque has same elements in same order
1736		*/
1737		public void testSerialization() throws Exception {
1738	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1738	>	Queue x = populatedDeque(SIZE);
1739	>	Queue y = serialClone(x);
1740
1741	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1742	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
1743	<	out.writeObject(q);
1744	<	out.close();
1745	<
1746	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
1747	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
1748	<	LinkedBlockingDeque r = (LinkedBlockingDeque)in.readObject();
1749	<	assertEquals(q.size(), r.size());
1555	<	while (!q.isEmpty())
1556	<	assertEquals(q.remove(), r.remove());
1557	<	}
1558	<
1559	<	/**
1560	<	* drainTo(null) throws NPE
1561	<	*/
1562	<	public void testDrainToNull() {
1563	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1564	<	try {
1565	<	q.drainTo(null);
1566	<	shouldThrow();
1567	<	} catch (NullPointerException success) {}
1568	<	}
1569	<
1570	<	/**
1571	<	* drainTo(this) throws IAE
1572	<	*/
1573	<	public void testDrainToSelf() {
1574	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1575	<	try {
1576	<	q.drainTo(q);
1577	<	shouldThrow();
1578	<	} catch (IllegalArgumentException success) {}
1741	>	assertNotSame(y, x);
1742	>	assertEquals(x.size(), y.size());
1743	>	assertEquals(x.toString(), y.toString());
1744	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
1745	>	while (!x.isEmpty()) {
1746	>	assertFalse(y.isEmpty());
1747	>	assertEquals(x.remove(), y.remove());
1748	>	}
1749	>	assertTrue(y.isEmpty());
1750		}
1751
1752		/**
#	Line 1585 | Line 1756 | public class LinkedBlockingDequeTest ext
1756		LinkedBlockingDeque q = populatedDeque(SIZE);
1757		ArrayList l = new ArrayList();
1758		q.drainTo(l);
1759	<	assertEquals(q.size(), 0);
1760	<	assertEquals(l.size(), SIZE);
1759	>	assertEquals(0, q.size());
1760	>	assertEquals(SIZE, l.size());
1761		for (int i = 0; i < SIZE; ++i)
1762		assertEquals(l.get(i), new Integer(i));
1763		q.add(zero);
#	Line 1596 | Line 1767 | public class LinkedBlockingDequeTest ext
1767		assertTrue(q.contains(one));
1768		l.clear();
1769		q.drainTo(l);
1770	<	assertEquals(q.size(), 0);
1771	<	assertEquals(l.size(), 2);
1770	>	assertEquals(0, q.size());
1771	>	assertEquals(2, l.size());
1772		for (int i = 0; i < 2; ++i)
1773		assertEquals(l.get(i), new Integer(i));
1774		}
#	Line 1609 | Line 1780 | public class LinkedBlockingDequeTest ext
1780		final LinkedBlockingDeque q = populatedDeque(SIZE);
1781		Thread t = new Thread(new CheckedRunnable() {
1782		public void realRun() throws InterruptedException {
1783	<	q.put(new Integer(SIZE+1));
1783	>	q.put(new Integer(SIZE + 1));
1784		}});
1785
1786		t.start();
#	Line 1623 | Line 1794 | public class LinkedBlockingDequeTest ext
1794		}
1795
1796		/**
1626	–	* drainTo(null, n) throws NPE
1627	–	*/
1628	–	public void testDrainToNullN() {
1629	–	LinkedBlockingDeque q = populatedDeque(SIZE);
1630	–	try {
1631	–	q.drainTo(null, 0);
1632	–	shouldThrow();
1633	–	} catch (NullPointerException success) {}
1634	–	}
1635	–
1636	–	/**
1637	–	* drainTo(this, n) throws IAE
1638	–	*/
1639	–	public void testDrainToSelfN() {
1640	–	LinkedBlockingDeque q = populatedDeque(SIZE);
1641	–	try {
1642	–	q.drainTo(q, 0);
1643	–	shouldThrow();
1644	–	} catch (IllegalArgumentException success) {}
1645	–	}
1646	–
1647	–	/**
1797		* drainTo(c, n) empties first min(n, size) elements of queue into c
1798		*/
1799		public void testDrainToN() {
#	Line 1655 | Line 1804 | public class LinkedBlockingDequeTest ext
1804		ArrayList l = new ArrayList();
1805		q.drainTo(l, i);
1806		int k = (i < SIZE) ? i : SIZE;
1807	<	assertEquals(l.size(), k);
1808	<	assertEquals(q.size(), SIZE-k);
1807	>	assertEquals(k, l.size());
1808	>	assertEquals(SIZE - k, q.size());
1809		for (int j = 0; j < k; ++j)
1810		assertEquals(l.get(j), new Integer(j));
1811	<	while (q.poll() != null) ;
1811	>	do {} while (q.poll() != null);
1812	>	}
1813	>	}
1814	>
1815	>	/**
1816	>	* remove(null), contains(null) always return false
1817	>	*/
1818	>	public void testNeverContainsNull() {
1819	>	Deque<?>[] qs = {
1820	>	new LinkedBlockingDeque<Object>(),
1821	>	populatedDeque(2),
1822	>	};
1823	>
1824	>	for (Deque<?> q : qs) {
1825	>	assertFalse(q.contains(null));
1826	>	assertFalse(q.remove(null));
1827	>	assertFalse(q.removeFirstOccurrence(null));
1828	>	assertFalse(q.removeLastOccurrence(null));
1829		}
1830		}
1831

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