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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.7 by jsr166, Mon Aug 3 19:07:51 2009 UTC vs.
Revision 1.12 by jsr166, Sat Aug 15 00:35:01 2009 UTC

#	Line 15 | Line 15 | import java.util.ArrayList;
15		import java.util.Arrays;
16		import java.util.ConcurrentModificationException;
17		import java.util.Iterator;
18	+	import java.util.List;
19		import java.util.NoSuchElementException;
20		import java.util.concurrent.*;
21		import static java.util.concurrent.TimeUnit.MILLISECONDS;
22		import junit.framework.Test;
23		import junit.framework.TestSuite;
24
25	+	@SuppressWarnings({"unchecked", "rawtypes"})
26		public class LinkedTransferQueueTest extends JSR166TestCase {
27
28		public static void main(String[] args) {
#	Line 31 | Line 33 | public class LinkedTransferQueueTest ext
33		return new TestSuite(LinkedTransferQueueTest.class);
34		}
35
36	+	void checkEmpty(LinkedTransferQueue q) throws InterruptedException {
37	+	assertTrue(q.isEmpty());
38	+	assertEquals(0, q.size());
39	+	assertNull(q.peek());
40	+	assertNull(q.poll());
41	+	assertNull(q.poll(0, MILLISECONDS));
42	+	assertEquals(q.toString(), "[]");
43	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
44	+	assertFalse(q.iterator().hasNext());
45	+	try {
46	+	q.element();
47	+	shouldThrow();
48	+	} catch (NoSuchElementException success) {
49	+	}
50	+	try {
51	+	q.iterator().next();
52	+	shouldThrow();
53	+	} catch (NoSuchElementException success) {
54	+	}
55	+	try {
56	+	q.remove();
57	+	shouldThrow();
58	+	} catch (NoSuchElementException success) {
59	+	}
60	+	}
61	+
62		/**
63		* Constructor builds new queue with size being zero and empty
64		* being true
#	Line 85 | Line 113 | public class LinkedTransferQueueTest ext
113		* Queue contains all elements of the collection it is initialized by
114		*/
115		public void testConstructor5() {
116	<	try {
117	<	Integer[] ints = new Integer[SIZE];
118	<	for (int i = 0; i < SIZE; ++i) {
119	<	ints[i] = i;
120	<	}
121	<	LinkedTransferQueue q
122	<	= new LinkedTransferQueue(Arrays.asList(ints));
123	<	for (int i = 0; i < SIZE; ++i) {
124	<	assertEquals(ints[i], q.poll());
125	<	}
126	<	} finally {
116	>	Integer[] ints = new Integer[SIZE];
117	>	for (int i = 0; i < SIZE; ++i) {
118	>	ints[i] = i;
119	>	}
120	>	List intList = Arrays.asList(ints);
121	>	LinkedTransferQueue q
122	>	= new LinkedTransferQueue(intList);
123	>	assertEquals(q.size(), intList.size());
124	>	assertEquals(q.toString(), intList.toString());
125	>	assertTrue(Arrays.equals(q.toArray(),
126	>	intList.toArray()));
127	>	assertTrue(Arrays.equals(q.toArray(new Object[0]),
128	>	intList.toArray(new Object[0])));
129	>	assertTrue(Arrays.equals(q.toArray(new Object[SIZE]),
130	>	intList.toArray(new Object[SIZE])));
131	>	for (int i = 0; i < SIZE; ++i) {
132	>	assertEquals(ints[i], q.poll());
133		}
134		}
135
136		/**
137	<	* Remaining capacity never decrease nor increase on add or remove
137	>	* remainingCapacity() always returns Integer.MAX_VALUE
138		*/
139		public void testRemainingCapacity() {
140		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
#	Line 228 | Line 262 | public class LinkedTransferQueueTest ext
262		public void testPut() {
263		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
264		for (int i = 0; i < SIZE; ++i) {
265	+	assertEquals(q.size(), i);
266		q.put(i);
267		assertTrue(q.contains(i));
268		}
234	–	assertEquals(q.size(), SIZE);
269		}
270
271		/**
#	Line 249 | Line 283 | public class LinkedTransferQueueTest ext
283		*/
284		public void testTakeFromEmpty() throws InterruptedException {
285		final LinkedTransferQueue q = new LinkedTransferQueue();
286	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
286	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
287		void realRun() throws InterruptedException {
288		q.take();
289		}});
256	–	t.start();
290		Thread.sleep(SHORT_DELAY_MS);
291		t.interrupt();
292		t.join();
#	Line 263 | Line 296 | public class LinkedTransferQueueTest ext
296		* Take removes existing elements until empty, then blocks interruptibly
297		*/
298		public void testBlockingTake() throws InterruptedException {
299	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
299	>	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
300	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
301		void realRun() throws InterruptedException {
268	–	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
302		for (int i = 0; i < SIZE; ++i) {
303		threadAssertEquals(i, (int) q.take());
304		}
305		q.take();
306		}});
307	<	t.start();
275	<	Thread.sleep(SHORT_DELAY_MS);
307	>	Thread.sleep(SMALL_DELAY_MS);
308		t.interrupt();
309		t.join();
310	+	checkEmpty(q);
311		}
312
313		/**
314		* poll succeeds unless empty
315		*/
316	<	public void testPoll() {
316	>	public void testPoll() throws InterruptedException {
317		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
318		for (int i = 0; i < SIZE; ++i) {
319		assertEquals(i, (int) q.poll());
320		}
321		assertNull(q.poll());
322	+	checkEmpty(q);
323		}
324
325		/**
#	Line 297 | Line 331 | public class LinkedTransferQueueTest ext
331		assertEquals(i, (int) q.poll(0, MILLISECONDS));
332		}
333		assertNull(q.poll(0, MILLISECONDS));
334	+	checkEmpty(q);
335		}
336
337		/**
#	Line 305 | Line 340 | public class LinkedTransferQueueTest ext
340		public void testTimedPoll() throws InterruptedException {
341		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
342		for (int i = 0; i < SIZE; ++i) {
343	<	assertEquals(i, (int) q.poll(SHORT_DELAY_MS, MILLISECONDS));
343	>	long t0 = System.nanoTime();
344	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
345	>	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
346	>	assertTrue(millisElapsed < SMALL_DELAY_MS);
347		}
348		assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
349	+	checkEmpty(q);
350		}
351
352		/**
#	Line 315 | Line 354 | public class LinkedTransferQueueTest ext
354		* returning timeout status
355		*/
356		public void testInterruptedTimedPoll() throws InterruptedException {
357	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
357	>	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
358	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
359		void realRun() throws InterruptedException {
320	–	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
360		for (int i = 0; i < SIZE; ++i) {
361	<	threadAssertEquals(i, (int) q.poll(SHORT_DELAY_MS,
361	>	long t0 = System.nanoTime();
362	>	threadAssertEquals(i, (int) q.poll(LONG_DELAY_MS,
363		MILLISECONDS));
364	+	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
365	+	assertTrue(millisElapsed < SMALL_DELAY_MS);
366		}
367	<	q.poll(SHORT_DELAY_MS, MILLISECONDS);
367	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
368		}});
369	<	t.start();
328	<	Thread.sleep(SHORT_DELAY_MS);
369	>	Thread.sleep(SMALL_DELAY_MS);
370		t.interrupt();
371		t.join();
372	+	checkEmpty(q);
373		}
374
375		/**
#	Line 336 | Line 378 | public class LinkedTransferQueueTest ext
378		*/
379		public void testTimedPollWithOffer() throws InterruptedException {
380		final LinkedTransferQueue q = new LinkedTransferQueue();
381	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
381	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
382		void realRun() throws InterruptedException {
383		threadAssertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
384		q.poll(LONG_DELAY_MS, MILLISECONDS);
385		q.poll(LONG_DELAY_MS, MILLISECONDS);
386		}});
345	–	t.start();
387		Thread.sleep(SMALL_DELAY_MS);
388		assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
389		t.interrupt();
#	Line 352 | Line 393 | public class LinkedTransferQueueTest ext
393		/**
394		* peek returns next element, or null if empty
395		*/
396	<	public void testPeek() {
396	>	public void testPeek() throws InterruptedException {
397		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
398		for (int i = 0; i < SIZE; ++i) {
399		assertEquals(i, (int) q.peek());
#	Line 361 | Line 402 | public class LinkedTransferQueueTest ext
402		i != (int) q.peek());
403		}
404		assertNull(q.peek());
405	+	checkEmpty(q);
406		}
407
408		/**
409		* element returns next element, or throws NoSuchElementException if empty
410		*/
411	<	public void testElement() {
411	>	public void testElement() throws InterruptedException {
412		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
413		for (int i = 0; i < SIZE; ++i) {
414		assertEquals(i, (int) q.element());
#	Line 377 | Line 419 | public class LinkedTransferQueueTest ext
419		shouldThrow();
420		} catch (NoSuchElementException success) {
421		}
422	+	checkEmpty(q);
423		}
424
425		/**
426		* remove removes next element, or throws NoSuchElementException if empty
427		*/
428	<	public void testRemove() {
428	>	public void testRemove() throws InterruptedException {
429		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
430		for (int i = 0; i < SIZE; ++i) {
431		assertEquals(i, (int) q.remove());
#	Line 392 | Line 435 | public class LinkedTransferQueueTest ext
435		shouldThrow();
436		} catch (NoSuchElementException success) {
437		}
438	+	checkEmpty(q);
439		}
440
441		/**
442		* remove(x) removes x and returns true if present
443		*/
444	<	public void testRemoveElement() {
444	>	public void testRemoveElement() throws InterruptedException {
445		LinkedTransferQueue q = populatedQueue(SIZE);
446		for (int i = 1; i < SIZE; i += 2) {
447		assertTrue(q.remove(i));
#	Line 406 | Line 450 | public class LinkedTransferQueueTest ext
450		assertTrue(q.remove(i));
451		assertFalse(q.remove(i + 1));
452		}
453	<	assertTrue(q.isEmpty());
453	>	checkEmpty(q);
454		}
455
456		/**
#	Line 419 | Line 463 | public class LinkedTransferQueueTest ext
463		assertTrue(q.remove(one));
464		assertTrue(q.remove(two));
465		assertTrue(q.add(three));
466	<	assertTrue(q.take() != null);
466	>	assertTrue(q.take() == three);
467		}
468
469		/**
#	Line 437 | Line 481 | public class LinkedTransferQueueTest ext
481		/**
482		* clear removes all elements
483		*/
484	<	public void testClear() {
484	>	public void testClear() throws InterruptedException {
485		LinkedTransferQueue q = populatedQueue(SIZE);
486		q.clear();
487	<	assertTrue(q.isEmpty());
444	<	assertEquals(0, q.size());
487	>	checkEmpty(q);
488		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
489		q.add(one);
490		assertFalse(q.isEmpty());
491	+	assertEquals(1, q.size());
492		assertTrue(q.contains(one));
493		q.clear();
494	<	assertTrue(q.isEmpty());
494	>	checkEmpty(q);
495		}
496
497		/**
#	Line 553 | Line 597 | public class LinkedTransferQueueTest ext
597		public void testIterator() throws InterruptedException {
598		LinkedTransferQueue q = populatedQueue(SIZE);
599		Iterator it = q.iterator();
600	+	int i = 0;
601		while (it.hasNext()) {
602	<	assertEquals(it.next(), q.take());
602	>	assertEquals(it.next(), i++);
603		}
604	+	assertEquals(i, SIZE);
605		}
606
607		/**
608	<	* iterator.remove removes current element
608	>	* iterator.remove() removes current element
609		*/
610		public void testIteratorRemove() {
611		final LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 748 | Line 794 | public class LinkedTransferQueueTest ext
794		*/
795		public void testDrainToWithActivePut() throws InterruptedException {
796		final LinkedTransferQueue q = populatedQueue(SIZE);
797	<	Thread t = new Thread(new CheckedRunnable() {
797	>	Thread t = newStartedThread(new CheckedRunnable() {
798		void realRun() {
799		q.put(SIZE + 1);
800		}});
755	–	t.start();
801		ArrayList l = new ArrayList();
802		q.drainTo(l);
803		assertTrue(l.size() >= SIZE);
#	Line 769 | Line 814 | public class LinkedTransferQueueTest ext
814		public void testDrainToNullN() {
815		LinkedTransferQueue q = populatedQueue(SIZE);
816		try {
817	<	q.drainTo(null, 0);
817	>	q.drainTo(null, SIZE);
818		shouldThrow();
819		} catch (NullPointerException success) {
820		}
#	Line 781 | Line 826 | public class LinkedTransferQueueTest ext
826		public void testDrainToSelfN() {
827		LinkedTransferQueue q = populatedQueue(SIZE);
828		try {
829	<	q.drainTo(q, 0);
829	>	q.drainTo(q, SIZE);
830		shouldThrow();
831		} catch (IllegalArgumentException success) {
832		}
#	Line 815 | Line 860 | public class LinkedTransferQueueTest ext
860		public void testWaitingConsumer() throws InterruptedException {
861		final LinkedTransferQueue q = new LinkedTransferQueue();
862		final ConsumerObserver waiting = new ConsumerObserver();
863	<	new Thread(new CheckedRunnable() {
864	<	void realRun() {
863	>
864	>	Thread t = newStartedThread(new CheckedRunnable() {
865	>	void realRun() throws InterruptedException {
866	>	Thread.sleep(SMALL_DELAY_MS);
867		threadAssertTrue(q.hasWaitingConsumer());
868		waiting.setWaitingConsumer(q.getWaitingConsumerCount());
869		threadAssertTrue(q.offer(new Object()));
870	<	}}).start();
870	>	}});
871	>
872		assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) != null);
873		assertTrue(q.getWaitingConsumerCount()
874		< waiting.getWaitingConsumers());
875	+	t.join();
876		}
877
878		/**
#	Line 846 | Line 895 | public class LinkedTransferQueueTest ext
895		final LinkedTransferQueue<Integer> q
896		= new LinkedTransferQueue<Integer>();
897
898	<	new Thread(new CheckedRunnable() {
898	>	Thread t = newStartedThread(new CheckedRunnable() {
899		void realRun() throws InterruptedException {
900		q.transfer(SIZE);
901		threadAssertTrue(q.isEmpty());
902	<	}}).start();
902	>	}});
903
904		Thread.sleep(SHORT_DELAY_MS);
905		assertEquals(1, q.size());
906		assertEquals(SIZE, (int) q.poll());
907		assertTrue(q.isEmpty());
908	+	t.join();
909		}
910
911		/**
#	Line 865 | Line 915 | public class LinkedTransferQueueTest ext
915		final LinkedTransferQueue<Integer> q
916		= new LinkedTransferQueue<Integer>();
917
918	<	Thread first = new Thread(new CheckedRunnable() {
918	>	Thread first = newStartedThread(new CheckedRunnable() {
919		void realRun() throws InterruptedException {
920		Integer i = SIZE + 1;
921		q.transfer(i);
922		threadAssertTrue(!q.contains(i));
923		threadAssertEquals(1, q.size());
924		}});
875	–	first.start();
925
926	<	Thread interruptedThread = new Thread(new CheckedInterruptedRunnable() {
927	<	void realRun() throws InterruptedException {
928	<	while (q.size() == 0)
929	<	Thread.yield();
930	<	q.transfer(SIZE);
931	<	}});
932	<	interruptedThread.start();
926	>	Thread interruptedThread = newStartedThread(
927	>	new CheckedInterruptedRunnable() {
928	>	void realRun() throws InterruptedException {
929	>	while (q.size() == 0)
930	>	Thread.yield();
931	>	q.transfer(SIZE);
932	>	}});
933
934		while (q.size() < 2)
935		Thread.yield();
#	Line 900 | Line 949 | public class LinkedTransferQueueTest ext
949		*/
950		public void testTransfer4() throws InterruptedException {
951		final LinkedTransferQueue q = new LinkedTransferQueue();
952	<	new Thread(new CheckedRunnable() {
952	>
953	>	Thread t = newStartedThread(new CheckedRunnable() {
954		void realRun() throws InterruptedException {
955		q.transfer(four);
956		threadAssertFalse(q.contains(four));
957		threadAssertEquals(three, q.poll());
958	<	}}).start();
959	<	Thread.sleep(MEDIUM_DELAY_MS);
958	>	}});
959	>
960	>	Thread.sleep(SHORT_DELAY_MS);
961		assertTrue(q.offer(three));
962		assertEquals(four, q.poll());
963	+	t.join();
964		}
965
966		/**
#	Line 919 | Line 971 | public class LinkedTransferQueueTest ext
971		final LinkedTransferQueue<Integer> q
972		= new LinkedTransferQueue<Integer>();
973
974	<	new Thread(new CheckedRunnable() {
974	>	Thread t = newStartedThread(new CheckedRunnable() {
975		void realRun() throws InterruptedException {
976		q.transfer(SIZE);
977	<	threadAssertTrue(q.isEmpty());
978	<	}}).start();
977	>	checkEmpty(q);
978	>	}});
979
980		Thread.sleep(SHORT_DELAY_MS);
981		assertEquals(SIZE, (int) q.take());
982	<	assertTrue(q.isEmpty());
982	>	checkEmpty(q);
983	>	t.join();
984		}
985
986		/**
#	Line 937 | Line 990 | public class LinkedTransferQueueTest ext
990		try {
991		final LinkedTransferQueue q = new LinkedTransferQueue();
992		q.tryTransfer(null);
993	<	this.shouldThrow();
993	>	shouldThrow();
994		} catch (NullPointerException ex) {
995		}
996		}
#	Line 946 | Line 999 | public class LinkedTransferQueueTest ext
999		* tryTransfer returns false and does not enqueue if there are no
1000		* consumers waiting to poll or take.
1001		*/
1002	<	public void testTryTransfer2() {
1002	>	public void testTryTransfer2() throws InterruptedException {
1003		final LinkedTransferQueue q = new LinkedTransferQueue();
1004		assertFalse(q.tryTransfer(new Object()));
1005		assertFalse(q.hasWaitingConsumer());
1006	<	assertTrue(q.isEmpty());
954	<	assertEquals(0, q.size());
1006	>	checkEmpty(q);
1007		}
1008
1009		/**
#	Line 961 | Line 1013 | public class LinkedTransferQueueTest ext
1013		public void testTryTransfer3() throws InterruptedException {
1014		final Object hotPotato = new Object();
1015		final LinkedTransferQueue q = new LinkedTransferQueue();
1016	<	new Thread(new CheckedRunnable() {
1016	>
1017	>	Thread t = newStartedThread(new CheckedRunnable() {
1018		void realRun() {
1019		while (! q.hasWaitingConsumer())
1020		Thread.yield();
#	Line 969 | Line 1022 | public class LinkedTransferQueueTest ext
1022		threadAssertTrue(q.isEmpty());
1023		threadAssertTrue(q.size() == 0);
1024		threadAssertTrue(q.tryTransfer(hotPotato));
1025	<	}}).start();
1026	<	assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) == hotPotato);
1027	<	assertTrue(q.isEmpty());
1025	>	}});
1026	>
1027	>	assertTrue(q.poll(MEDIUM_DELAY_MS, MILLISECONDS) == hotPotato);
1028	>	checkEmpty(q);
1029	>	t.join();
1030		}
1031
1032		/**
#	Line 981 | Line 1036 | public class LinkedTransferQueueTest ext
1036		public void testTryTransfer4() throws InterruptedException {
1037		final Object hotPotato = new Object();
1038		final LinkedTransferQueue q = new LinkedTransferQueue();
1039	<	new Thread(new CheckedRunnable() {
1039	>
1040	>	Thread t = newStartedThread(new CheckedRunnable() {
1041		void realRun() {
1042		while (! q.hasWaitingConsumer())
1043		Thread.yield();
#	Line 989 | Line 1045 | public class LinkedTransferQueueTest ext
1045		threadAssertTrue(q.isEmpty());
1046		threadAssertTrue(q.size() == 0);
1047		threadAssertTrue(q.tryTransfer(hotPotato));
1048	<	}}).start();
1048	>	}});
1049	>
1050		assertTrue(q.take() == hotPotato);
1051	<	assertTrue(q.isEmpty());
1051	>	checkEmpty(q);
1052	>	t.join();
1053		}
1054
1055		/**
#	Line 1000 | Line 1058 | public class LinkedTransferQueueTest ext
1058		*/
1059		public void testTryTransfer5() throws InterruptedException {
1060		final LinkedTransferQueue q = new LinkedTransferQueue();
1061	<	Thread toInterrupt = new Thread(new CheckedInterruptedRunnable() {
1061	>
1062	>	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
1063		void realRun() throws InterruptedException {
1064		q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
1065		}});
1066	<	toInterrupt.start();
1066	>
1067		Thread.sleep(SMALL_DELAY_MS);
1068		toInterrupt.interrupt();
1069	+	toInterrupt.join();
1070		}
1071
1072		/**
#	Line 1014 | Line 1074 | public class LinkedTransferQueueTest ext
1074		*/
1075		public void testTryTransfer6() throws InterruptedException {
1076		final LinkedTransferQueue q = new LinkedTransferQueue();
1077	<	new Thread(new CheckedRunnable() {
1077	>
1078	>	Thread t = newStartedThread(new CheckedRunnable() {
1079		void realRun() throws InterruptedException {
1080		threadAssertFalse
1081		(q.tryTransfer(new Object(),
1082		SHORT_DELAY_MS, MILLISECONDS));
1083	<	}}).start();
1084	<	Thread.sleep(LONG_DELAY_MS);
1085	<	assertTrue(q.isEmpty());
1083	>	}});
1084	>
1085	>	Thread.sleep(SMALL_DELAY_MS);
1086	>	checkEmpty(q);
1087	>	t.join();
1088		}
1089
1090		/**
#	Line 1031 | Line 1094 | public class LinkedTransferQueueTest ext
1094		public void testTryTransfer7() throws InterruptedException {
1095		final LinkedTransferQueue q = new LinkedTransferQueue();
1096		assertTrue(q.offer(four));
1097	<	new Thread(new CheckedRunnable() {
1097	>
1098	>	Thread t = newStartedThread(new CheckedRunnable() {
1099		void realRun() throws InterruptedException {
1100		threadAssertTrue(q.tryTransfer(five,
1101	<	LONG_DELAY_MS, MILLISECONDS));
1101	>	MEDIUM_DELAY_MS, MILLISECONDS));
1102		threadAssertTrue(q.isEmpty());
1103	<	}}).start();
1103	>	}});
1104	>
1105		Thread.sleep(SHORT_DELAY_MS);
1106		assertEquals(2, q.size());
1107		assertEquals(four, q.poll());
1108		assertEquals(five, q.poll());
1109	<	assertTrue(q.isEmpty());
1109	>	checkEmpty(q);
1110	>	t.join();
1111		}
1112
1113		/**
#	Line 1055 | Line 1121 | public class LinkedTransferQueueTest ext
1121		assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1122		assertEquals(1, q.size());
1123		assertEquals(four, q.poll());
1124	<	threadAssertTrue(q.isEmpty());
1124	>	checkEmpty(q);
1125		assertNull(q.poll());
1126		}
1127

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