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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.12 by jsr166, Sat Aug 15 00:35:01 2009 UTC vs.
Revision 1.82 by jsr166, Sun Aug 11 22:29:27 2019 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include John Vint
6		*/
7
8	<	import java.io.BufferedInputStream;
9	<	import java.io.BufferedOutputStream;
10	<	import java.io.ByteArrayInputStream;
11	<	import java.io.ByteArrayOutputStream;
12	<	import java.io.ObjectInputStream;
13	<	import java.io.ObjectOutputStream;
8	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
9	>
10		import java.util.ArrayList;
11		import java.util.Arrays;
12	<	import java.util.ConcurrentModificationException;
12	>	import java.util.Collection;
13		import java.util.Iterator;
14		import java.util.List;
15		import java.util.NoSuchElementException;
16	<	import java.util.concurrent.*;
17	<	import static java.util.concurrent.TimeUnit.MILLISECONDS;
16	>	import java.util.Queue;
17	>	import java.util.concurrent.BlockingQueue;
18	>	import java.util.concurrent.Callable;
19	>	import java.util.concurrent.CountDownLatch;
20	>	import java.util.concurrent.Executors;
21	>	import java.util.concurrent.ExecutorService;
22	>	import java.util.concurrent.LinkedTransferQueue;
23	>
24		import junit.framework.Test;
23	–	import junit.framework.TestSuite;
25
26		@SuppressWarnings({"unchecked", "rawtypes"})
27		public class LinkedTransferQueueTest extends JSR166TestCase {
28	+	public static class Generic extends BlockingQueueTest {
29	+	protected BlockingQueue emptyCollection() {
30	+	return new LinkedTransferQueue();
31	+	}
32	+	}
33
34		public static void main(String[] args) {
35	<	junit.textui.TestRunner.run(suite());
35	>	main(suite(), args);
36		}
37
38		public static Test suite() {
39	<	return new TestSuite(LinkedTransferQueueTest.class);
40	<	}
41	<
42	<	void checkEmpty(LinkedTransferQueue q) throws InterruptedException {
43	<	assertTrue(q.isEmpty());
44	<	assertEquals(0, q.size());
45	<	assertNull(q.peek());
46	<	assertNull(q.poll());
47	<	assertNull(q.poll(0, MILLISECONDS));
48	<	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	<	}
39	>	class Implementation implements CollectionImplementation {
40	>	public Class<?> klazz() { return LinkedTransferQueue.class; }
41	>	public Collection emptyCollection() { return new LinkedTransferQueue(); }
42	>	public Object makeElement(int i) { return i; }
43	>	public boolean isConcurrent() { return true; }
44	>	public boolean permitsNulls() { return false; }
45	>	}
46	>	return newTestSuite(LinkedTransferQueueTest.class,
47	>	new Generic().testSuite(),
48	>	CollectionTest.testSuite(new Implementation()));
49		}
50
51		/**
#	Line 76 | Line 65 | public class LinkedTransferQueueTest ext
65		try {
66		new LinkedTransferQueue(null);
67		shouldThrow();
68	<	} catch (NullPointerException success) {
80	<	}
68	>	} catch (NullPointerException success) {}
69		}
70
71		/**
#	Line 85 | Line 73 | public class LinkedTransferQueueTest ext
73		* NullPointerException
74		*/
75		public void testConstructor3() {
76	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
77		try {
78	<	Integer[] ints = new Integer[SIZE];
90	<	new LinkedTransferQueue(Arrays.asList(ints));
78	>	new LinkedTransferQueue(elements);
79		shouldThrow();
80	<	} catch (NullPointerException success) {
93	<	}
80	>	} catch (NullPointerException success) {}
81		}
82
83		/**
#	Line 98 | Line 85 | public class LinkedTransferQueueTest ext
85		* throws NullPointerException
86		*/
87		public void testConstructor4() {
88	+	Integer[] ints = new Integer[SIZE];
89	+	for (int i = 0; i < SIZE - 1; ++i)
90	+	ints[i] = i;
91	+	Collection<Integer> elements = Arrays.asList(ints);
92		try {
93	<	Integer[] ints = new Integer[SIZE];
103	<	for (int i = 0; i < SIZE - 1; ++i) {
104	<	ints[i] = i;
105	<	}
106	<	new LinkedTransferQueue(Arrays.asList(ints));
93	>	new LinkedTransferQueue(elements);
94		shouldThrow();
95	<	} catch (NullPointerException success) {
109	<	}
95	>	} catch (NullPointerException success) {}
96		}
97
98		/**
#	Line 137 | Line 123 | public class LinkedTransferQueueTest ext
123		* remainingCapacity() always returns Integer.MAX_VALUE
124		*/
125		public void testRemainingCapacity() {
126	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
126	>	BlockingQueue q = populatedQueue(SIZE);
127		for (int i = 0; i < SIZE; ++i) {
128		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
129		assertEquals(SIZE - i, q.size());
130	<	q.remove();
130	>	assertEquals(i, q.remove());
131		}
132		for (int i = 0; i < SIZE; ++i) {
133		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
134		assertEquals(i, q.size());
135	<	q.add(i);
150	<	}
151	<	}
152	<
153	<	/**
154	<	* offer(null) throws NullPointerException
155	<	*/
156	<	public void testOfferNull() {
157	<	try {
158	<	LinkedTransferQueue q = new LinkedTransferQueue();
159	<	q.offer(null);
160	<	shouldThrow();
161	<	} catch (NullPointerException success) {
162	<	}
163	<	}
164	<
165	<	/**
166	<	* add(null) throws NullPointerException
167	<	*/
168	<	public void testAddNull() {
169	<	try {
170	<	LinkedTransferQueue q = new LinkedTransferQueue();
171	<	q.add(null);
172	<	shouldThrow();
173	<	} catch (NullPointerException success) {
174	<	}
175	<	}
176	<
177	<	/**
178	<	* addAll(null) throws NullPointerException
179	<	*/
180	<	public void testAddAll1() {
181	<	try {
182	<	LinkedTransferQueue q = new LinkedTransferQueue();
183	<	q.addAll(null);
184	<	shouldThrow();
185	<	} catch (NullPointerException success) {
135	>	assertTrue(q.add(i));
136		}
137		}
138
#	Line 190 | Line 140 | public class LinkedTransferQueueTest ext
140		* addAll(this) throws IllegalArgumentException
141		*/
142		public void testAddAllSelf() {
143	+	LinkedTransferQueue q = populatedQueue(SIZE);
144		try {
194	–	LinkedTransferQueue q = populatedQueue(SIZE);
145		q.addAll(q);
146		shouldThrow();
147	<	} catch (IllegalArgumentException success) {
198	<	}
199	<	}
200	<
201	<	/**
202	<	* addAll of a collection with null elements throws NullPointerException
203	<	*/
204	<	public void testAddAll2() {
205	<	try {
206	<	LinkedTransferQueue q = new LinkedTransferQueue();
207	<	Integer[] ints = new Integer[SIZE];
208	<	q.addAll(Arrays.asList(ints));
209	<	shouldThrow();
210	<	} catch (NullPointerException success) {
211	<	}
147	>	} catch (IllegalArgumentException success) {}
148		}
149
150		/**
#	Line 216 | Line 152 | public class LinkedTransferQueueTest ext
152		* NullPointerException after possibly adding some elements
153		*/
154		public void testAddAll3() {
155	+	LinkedTransferQueue q = new LinkedTransferQueue();
156	+	Integer[] ints = new Integer[SIZE];
157	+	for (int i = 0; i < SIZE - 1; ++i)
158	+	ints[i] = i;
159		try {
220	–	LinkedTransferQueue q = new LinkedTransferQueue();
221	–	Integer[] ints = new Integer[SIZE];
222	–	for (int i = 0; i < SIZE - 1; ++i) {
223	–	ints[i] = i;
224	–	}
160		q.addAll(Arrays.asList(ints));
161		shouldThrow();
162	<	} catch (NullPointerException success) {
228	<	}
162	>	} catch (NullPointerException success) {}
163		}
164
165		/**
#	Line 246 | Line 180 | public class LinkedTransferQueueTest ext
180		}
181
182		/**
249	–	* put(null) throws NullPointerException
250	–	*/
251	–	public void testPutNull() throws InterruptedException {
252	–	try {
253	–	LinkedTransferQueue q = new LinkedTransferQueue();
254	–	q.put(null);
255	–	shouldThrow();
256	–	} catch (NullPointerException success) {}
257	–	}
258	–
259	–	/**
183		* all elements successfully put are contained
184		*/
185		public void testPut() {
186	<	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
186	>	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
187		for (int i = 0; i < SIZE; ++i) {
188	<	assertEquals(q.size(), i);
188	>	assertEquals(i, q.size());
189		q.put(i);
190		assertTrue(q.contains(i));
191		}
#	Line 279 | Line 202 | public class LinkedTransferQueueTest ext
202		}
203
204		/**
205	<	* take blocks interruptibly when empty
283	<	*/
284	<	public void testTakeFromEmpty() throws InterruptedException {
285	<	final LinkedTransferQueue q = new LinkedTransferQueue();
286	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
287	<	void realRun() throws InterruptedException {
288	<	q.take();
289	<	}});
290	<	Thread.sleep(SHORT_DELAY_MS);
291	<	t.interrupt();
292	<	t.join();
293	<	}
294	<
295	<	/**
296	<	* Take removes existing elements until empty, then blocks interruptibly
205	>	* take removes existing elements until empty, then blocks interruptibly
206		*/
207		public void testBlockingTake() throws InterruptedException {
208	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
209	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
210	<	void realRun() throws InterruptedException {
211	<	for (int i = 0; i < SIZE; ++i) {
212	<	threadAssertEquals(i, (int) q.take());
213	<	}
214	<	q.take();
208	>	final BlockingQueue q = populatedQueue(SIZE);
209	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
210	>	Thread t = newStartedThread(new CheckedRunnable() {
211	>	public void realRun() throws InterruptedException {
212	>	for (int i = 0; i < SIZE; i++) assertEquals(i, q.take());
213	>
214	>	Thread.currentThread().interrupt();
215	>	try {
216	>	q.take();
217	>	shouldThrow();
218	>	} catch (InterruptedException success) {}
219	>	assertFalse(Thread.interrupted());
220	>
221	>	pleaseInterrupt.countDown();
222	>	try {
223	>	q.take();
224	>	shouldThrow();
225	>	} catch (InterruptedException success) {}
226	>	assertFalse(Thread.interrupted());
227		}});
228	<	Thread.sleep(SMALL_DELAY_MS);
228	>
229	>	await(pleaseInterrupt);
230	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
231		t.interrupt();
232	<	t.join();
310	<	checkEmpty(q);
232	>	awaitTermination(t);
233		}
234
235		/**
#	Line 323 | Line 245 | public class LinkedTransferQueueTest ext
245		}
246
247		/**
248	<	* timed pool with zero timeout succeeds when non-empty, else times out
248	>	* timed poll with zero timeout succeeds when non-empty, else times out
249		*/
250		public void testTimedPoll0() throws InterruptedException {
251		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
#	Line 335 | Line 257 | public class LinkedTransferQueueTest ext
257		}
258
259		/**
260	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
260	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
261		*/
262		public void testTimedPoll() throws InterruptedException {
263		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
264	<	for (int i = 0; i < SIZE; ++i) {
265	<	long t0 = System.nanoTime();
264	>	long startTime = System.nanoTime();
265	>	for (int i = 0; i < SIZE; ++i)
266		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
267	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
268	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
269	<	}
270	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
267	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
268	>
269	>	startTime = System.nanoTime();
270	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
271	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
272		checkEmpty(q);
273		}
274
#	Line 354 | Line 277 | public class LinkedTransferQueueTest ext
277		* returning timeout status
278		*/
279		public void testInterruptedTimedPoll() throws InterruptedException {
280	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
281	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
282	<	void realRun() throws InterruptedException {
283	<	for (int i = 0; i < SIZE; ++i) {
284	<	long t0 = System.nanoTime();
285	<	threadAssertEquals(i, (int) q.poll(LONG_DELAY_MS,
286	<	MILLISECONDS));
287	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
288	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
289	<	}
290	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
280	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
281	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
282	>	Thread t = newStartedThread(new CheckedRunnable() {
283	>	public void realRun() throws InterruptedException {
284	>	long startTime = System.nanoTime();
285	>	for (int i = 0; i < SIZE; i++)
286	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
287	>
288	>	Thread.currentThread().interrupt();
289	>	try {
290	>	q.poll(randomTimeout(), randomTimeUnit());
291	>	shouldThrow();
292	>	} catch (InterruptedException success) {}
293	>	assertFalse(Thread.interrupted());
294	>
295	>	pleaseInterrupt.countDown();
296	>	try {
297	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
298	>	shouldThrow();
299	>	} catch (InterruptedException success) {}
300	>	assertFalse(Thread.interrupted());
301	>
302	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
303		}});
304	<	Thread.sleep(SMALL_DELAY_MS);
304	>
305	>	await(pleaseInterrupt);
306	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
307		t.interrupt();
308	<	t.join();
308	>	awaitTermination(t);
309		checkEmpty(q);
310		}
311
312		/**
313	<	* timed poll before a delayed offer fails; after offer succeeds;
314	<	* on interruption throws
313	>	* timed poll after thread interrupted throws InterruptedException
314	>	* instead of returning timeout status
315		*/
316	<	public void testTimedPollWithOffer() throws InterruptedException {
317	<	final LinkedTransferQueue q = new LinkedTransferQueue();
318	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
319	<	void realRun() throws InterruptedException {
320	<	threadAssertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
321	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
322	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
316	>	public void testTimedPollAfterInterrupt() throws InterruptedException {
317	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
318	>	Thread t = newStartedThread(new CheckedRunnable() {
319	>	public void realRun() throws InterruptedException {
320	>	long startTime = System.nanoTime();
321	>	Thread.currentThread().interrupt();
322	>	for (int i = 0; i < SIZE; ++i)
323	>	assertEquals(i, (int) q.poll(randomTimeout(), randomTimeUnit()));
324	>	try {
325	>	q.poll(randomTimeout(), randomTimeUnit());
326	>	shouldThrow();
327	>	} catch (InterruptedException success) {}
328	>	assertFalse(Thread.interrupted());
329	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
330		}});
331	<	Thread.sleep(SMALL_DELAY_MS);
332	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
333	<	t.interrupt();
390	<	t.join();
331	>
332	>	awaitTermination(t);
333	>	checkEmpty(q);
334		}
335
336		/**
#	Line 417 | Line 360 | public class LinkedTransferQueueTest ext
360		try {
361		q.element();
362		shouldThrow();
363	<	} catch (NoSuchElementException success) {
421	<	}
363	>	} catch (NoSuchElementException success) {}
364		checkEmpty(q);
365		}
366
#	Line 433 | Line 375 | public class LinkedTransferQueueTest ext
375		try {
376		q.remove();
377		shouldThrow();
378	<	} 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() throws InterruptedException {
445	<	LinkedTransferQueue q = populatedQueue(SIZE);
446	<	for (int i = 1; i < SIZE; i += 2) {
447	<	assertTrue(q.remove(i));
448	<	}
449	<	for (int i = 0; i < SIZE; i += 2) {
450	<	assertTrue(q.remove(i));
451	<	assertFalse(q.remove(i + 1));
452	<	}
378	>	} catch (NoSuchElementException success) {}
379		checkEmpty(q);
380		}
381
#	Line 463 | Line 389 | public class LinkedTransferQueueTest ext
389		assertTrue(q.remove(one));
390		assertTrue(q.remove(two));
391		assertTrue(q.add(three));
392	<	assertTrue(q.take() == three);
392	>	assertSame(q.take(), three);
393		}
394
395		/**
#	Line 499 | Line 425 | public class LinkedTransferQueueTest ext
425		*/
426		public void testContainsAll() {
427		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
428	<	LinkedTransferQueue<Integer> p = new LinkedTransferQueue<Integer>();
428	>	LinkedTransferQueue<Integer> p = new LinkedTransferQueue<>();
429		for (int i = 0; i < SIZE; ++i) {
430		assertTrue(q.containsAll(p));
431		assertFalse(p.containsAll(q));
#	Line 545 | Line 471 | public class LinkedTransferQueueTest ext
471		}
472
473		/**
474	<	* toArray contains all elements
474	>	* toArray() contains all elements in FIFO order
475		*/
476	<	public void testToArray() throws InterruptedException {
476	>	public void testToArray() {
477		LinkedTransferQueue q = populatedQueue(SIZE);
478	<	Object[] o = q.toArray();
479	<	for (int i = 0; i < o.length; i++) {
480	<	assertEquals(o[i], q.take());
481	<	}
478	>	Object[] a = q.toArray();
479	>	assertSame(Object[].class, a.getClass());
480	>	for (Object o : a)
481	>	assertSame(o, q.poll());
482	>	assertTrue(q.isEmpty());
483		}
484
485		/**
486	<	* toArray(a) contains all elements
486	>	* toArray(a) contains all elements in FIFO order
487		*/
488	<	public void testToArray2() throws InterruptedException {
488	>	public void testToArray2() {
489		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
490		Integer[] ints = new Integer[SIZE];
491	<	ints = q.toArray(ints);
492	<	for (int i = 0; i < ints.length; i++) {
493	<	assertEquals(ints[i], q.take());
494	<	}
495	<	}
569	<
570	<	/**
571	<	* toArray(null) throws NullPointerException
572	<	*/
573	<	public void testToArray_BadArg() {
574	<	try {
575	<	LinkedTransferQueue q = populatedQueue(SIZE);
576	<	Object o[] = q.toArray(null);
577	<	shouldThrow();
578	<	} catch (NullPointerException success) {
579	<	}
491	>	Integer[] array = q.toArray(ints);
492	>	assertSame(ints, array);
493	>	for (Integer o : ints)
494	>	assertSame(o, q.poll());
495	>	assertTrue(q.isEmpty());
496		}
497
498		/**
499	<	* toArray with incompatible array type throws CCE
499	>	* toArray(incompatible array type) throws ArrayStoreException
500		*/
501		public void testToArray1_BadArg() {
502	+	LinkedTransferQueue q = populatedQueue(SIZE);
503		try {
504	<	LinkedTransferQueue q = populatedQueue(SIZE);
588	<	Object o[] = q.toArray(new String[10]);
504	>	q.toArray(new String[10]);
505		shouldThrow();
506	<	} catch (ArrayStoreException success) {
591	<	}
506	>	} catch (ArrayStoreException success) {}
507		}
508
509		/**
#	Line 597 | Line 512 | public class LinkedTransferQueueTest ext
512		public void testIterator() throws InterruptedException {
513		LinkedTransferQueue q = populatedQueue(SIZE);
514		Iterator it = q.iterator();
515	<	int i = 0;
516	<	while (it.hasNext()) {
517	<	assertEquals(it.next(), i++);
603	<	}
515	>	int i;
516	>	for (i = 0; it.hasNext(); i++)
517	>	assertTrue(q.contains(it.next()));
518		assertEquals(i, SIZE);
519	+	assertIteratorExhausted(it);
520	+
521	+	it = q.iterator();
522	+	for (i = 0; it.hasNext(); i++)
523	+	assertEquals(it.next(), q.take());
524	+	assertEquals(i, SIZE);
525	+	assertIteratorExhausted(it);
526	+	}
527	+
528	+	/**
529	+	* iterator of empty collection has no elements
530	+	*/
531	+	public void testEmptyIterator() {
532	+	assertIteratorExhausted(new LinkedTransferQueue().iterator());
533		}
534
535		/**
#	Line 618 | Line 546 | public class LinkedTransferQueueTest ext
546		it.remove();
547
548		it = q.iterator();
549	<	assertEquals(it.next(), one);
550	<	assertEquals(it.next(), three);
549	>	assertSame(it.next(), one);
550	>	assertSame(it.next(), three);
551		assertFalse(it.hasNext());
552		}
553
#	Line 627 | Line 555 | public class LinkedTransferQueueTest ext
555		* iterator ordering is FIFO
556		*/
557		public void testIteratorOrdering() {
558	<	final LinkedTransferQueue<Integer> q
631	<	= new LinkedTransferQueue<Integer>();
558	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
559		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
560		q.add(one);
561		q.add(two);
#	Line 663 | Line 590 | public class LinkedTransferQueueTest ext
590		LinkedTransferQueue q = populatedQueue(SIZE);
591		String s = q.toString();
592		for (int i = 0; i < SIZE; ++i) {
593	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
593	>	assertTrue(s.contains(String.valueOf(i)));
594		}
595		}
596
#	Line 672 | Line 599 | public class LinkedTransferQueueTest ext
599		*/
600		public void testOfferInExecutor() {
601		final LinkedTransferQueue q = new LinkedTransferQueue();
602	<	q.add(one);
603	<	q.add(two);
604	<	ExecutorService executor = Executors.newFixedThreadPool(2);
605	<
606	<	executor.execute(new CheckedRunnable() {
607	<	void realRun() {
608	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS,
609	<	MILLISECONDS));
610	<	}});
611	<
612	<	executor.execute(new CheckedRunnable() {
686	<	void realRun() throws InterruptedException {
687	<	Thread.sleep(SMALL_DELAY_MS);
688	<	threadAssertEquals(one, q.take());
689	<	}});
602	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
603	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
604	>	try (PoolCleaner cleaner = cleaner(executor)) {
605	>
606	>	executor.execute(new CheckedRunnable() {
607	>	public void realRun() throws InterruptedException {
608	>	threadsStarted.await();
609	>	long startTime = System.nanoTime();
610	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
611	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
612	>	}});
613
614	<	joinPool(executor);
614	>	executor.execute(new CheckedRunnable() {
615	>	public void realRun() throws InterruptedException {
616	>	threadsStarted.await();
617	>	assertSame(one, q.take());
618	>	checkEmpty(q);
619	>	}});
620	>	}
621		}
622
623		/**
624	<	* poll retrieves elements across Executor threads
624	>	* timed poll retrieves elements across Executor threads
625		*/
626		public void testPollInExecutor() {
627		final LinkedTransferQueue q = new LinkedTransferQueue();
628	<	ExecutorService executor = Executors.newFixedThreadPool(2);
629	<
630	<	executor.execute(new CheckedRunnable() {
631	<	void realRun() throws InterruptedException {
632	<	threadAssertNull(q.poll());
633	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS,
634	<	MILLISECONDS));
635	<	threadAssertTrue(q.isEmpty());
636	<	}});
637	<
638	<	executor.execute(new CheckedRunnable() {
639	<	void realRun() throws InterruptedException {
640	<	Thread.sleep(SMALL_DELAY_MS);
712	<	q.put(one);
713	<	}});
714	<
715	<	joinPool(executor);
716	<	}
717	<
718	<	/**
719	<	* A deserialized serialized queue has same elements in same order
720	<	*/
721	<	public void testSerialization() throws Exception {
722	<	LinkedTransferQueue q = populatedQueue(SIZE);
723	<
724	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
725	<	ObjectOutputStream out
726	<	= new ObjectOutputStream(new BufferedOutputStream(bout));
727	<	out.writeObject(q);
728	<	out.close();
729	<
730	<	ByteArrayInputStream bin
731	<	= new ByteArrayInputStream(bout.toByteArray());
732	<	ObjectInputStream in
733	<	= new ObjectInputStream(new BufferedInputStream(bin));
734	<	LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
628	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
629	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
630	>	try (PoolCleaner cleaner = cleaner(executor)) {
631	>
632	>	executor.execute(new CheckedRunnable() {
633	>	public void realRun() throws InterruptedException {
634	>	assertNull(q.poll());
635	>	threadsStarted.await();
636	>	long startTime = System.nanoTime();
637	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
638	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
639	>	checkEmpty(q);
640	>	}});
641
642	<	assertEquals(q.size(), r.size());
643	<	while (!q.isEmpty()) {
644	<	assertEquals(q.remove(), r.remove());
642	>	executor.execute(new CheckedRunnable() {
643	>	public void realRun() throws InterruptedException {
644	>	threadsStarted.await();
645	>	q.put(one);
646	>	}});
647		}
648		}
649
650		/**
651	<	* drainTo(null) throws NullPointerException
651	>	* A deserialized/reserialized queue has same elements in same order
652		*/
653	<	public void testDrainToNull() {
654	<	LinkedTransferQueue q = populatedQueue(SIZE);
655	<	try {
748	<	q.drainTo(null);
749	<	shouldThrow();
750	<	} catch (NullPointerException success) {
751	<	}
752	<	}
653	>	public void testSerialization() throws Exception {
654	>	Queue x = populatedQueue(SIZE);
655	>	Queue y = serialClone(x);
656
657	<	/**
658	<	* drainTo(this) throws IllegalArgumentException
659	<	*/
660	<	public void testDrainToSelf() {
661	<	LinkedTransferQueue q = populatedQueue(SIZE);
662	<	try {
663	<	q.drainTo(q);
761	<	shouldThrow();
762	<	} catch (IllegalArgumentException success) {
657	>	assertNotSame(y, x);
658	>	assertEquals(x.size(), y.size());
659	>	assertEquals(x.toString(), y.toString());
660	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
661	>	while (!x.isEmpty()) {
662	>	assertFalse(y.isEmpty());
663	>	assertEquals(x.remove(), y.remove());
664		}
665	+	assertTrue(y.isEmpty());
666		}
667
668		/**
#	Line 770 | Line 672 | public class LinkedTransferQueueTest ext
672		LinkedTransferQueue q = populatedQueue(SIZE);
673		ArrayList l = new ArrayList();
674		q.drainTo(l);
675	<	assertEquals(q.size(), 0);
676	<	assertEquals(l.size(), SIZE);
675	>	assertEquals(0, q.size());
676	>	assertEquals(SIZE, l.size());
677		for (int i = 0; i < SIZE; ++i) {
678	<	assertEquals(l.get(i), i);
678	>	assertEquals(i, l.get(i));
679		}
680		q.add(zero);
681		q.add(one);
#	Line 782 | Line 684 | public class LinkedTransferQueueTest ext
684		assertTrue(q.contains(one));
685		l.clear();
686		q.drainTo(l);
687	<	assertEquals(q.size(), 0);
688	<	assertEquals(l.size(), 2);
687	>	assertEquals(0, q.size());
688	>	assertEquals(2, l.size());
689		for (int i = 0; i < 2; ++i) {
690	<	assertEquals(l.get(i), i);
690	>	assertEquals(i, l.get(i));
691		}
692		}
693
694		/**
695	<	* drainTo empties full queue, unblocking a waiting put.
695	>	* drainTo(c) empties full queue, unblocking a waiting put.
696		*/
697		public void testDrainToWithActivePut() throws InterruptedException {
698		final LinkedTransferQueue q = populatedQueue(SIZE);
699		Thread t = newStartedThread(new CheckedRunnable() {
700	<	void realRun() {
700	>	public void realRun() {
701		q.put(SIZE + 1);
702		}});
703		ArrayList l = new ArrayList();
704		q.drainTo(l);
705		assertTrue(l.size() >= SIZE);
706	<	for (int i = 0; i < SIZE; ++i) {
707	<	assertEquals(l.get(i), i);
708	<	}
807	<	t.join();
706	>	for (int i = 0; i < SIZE; ++i)
707	>	assertEquals(i, l.get(i));
708	>	awaitTermination(t);
709		assertTrue(q.size() + l.size() >= SIZE);
710		}
711
712		/**
713	<	* drainTo(null, n) throws NullPointerException
813	<	*/
814	<	public void testDrainToNullN() {
815	<	LinkedTransferQueue q = populatedQueue(SIZE);
816	<	try {
817	<	q.drainTo(null, SIZE);
818	<	shouldThrow();
819	<	} catch (NullPointerException success) {
820	<	}
821	<	}
822	<
823	<	/**
824	<	* drainTo(this, n) throws IllegalArgumentException
825	<	*/
826	<	public void testDrainToSelfN() {
827	<	LinkedTransferQueue q = populatedQueue(SIZE);
828	<	try {
829	<	q.drainTo(q, SIZE);
830	<	shouldThrow();
831	<	} catch (IllegalArgumentException success) {
832	<	}
833	<	}
834	<
835	<	/**
836	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
713	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
714		*/
715		public void testDrainToN() {
716		LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 844 | Line 721 | public class LinkedTransferQueueTest ext
721		ArrayList l = new ArrayList();
722		q.drainTo(l, i);
723		int k = (i < SIZE) ? i : SIZE;
724	<	assertEquals(l.size(), k);
725	<	assertEquals(q.size(), SIZE - k);
726	<	for (int j = 0; j < k; ++j) {
727	<	assertEquals(l.get(j), j);
728	<	}
852	<	while (q.poll() != null)
853	<	;
724	>	assertEquals(k, l.size());
725	>	assertEquals(SIZE - k, q.size());
726	>	for (int j = 0; j < k; ++j)
727	>	assertEquals(j, l.get(j));
728	>	do {} while (q.poll() != null);
729		}
730		}
731
732		/**
733	<	* poll and take decrement the waiting consumer count
733	>	* timed poll() or take() increments the waiting consumer count;
734	>	* offer(e) decrements the waiting consumer count
735		*/
736		public void testWaitingConsumer() throws InterruptedException {
737		final LinkedTransferQueue q = new LinkedTransferQueue();
738	<	final ConsumerObserver waiting = new ConsumerObserver();
738	>	assertEquals(0, q.getWaitingConsumerCount());
739	>	assertFalse(q.hasWaitingConsumer());
740	>	final CountDownLatch threadStarted = new CountDownLatch(1);
741
742		Thread t = newStartedThread(new CheckedRunnable() {
743	<	void realRun() throws InterruptedException {
744	<	Thread.sleep(SMALL_DELAY_MS);
745	<	threadAssertTrue(q.hasWaitingConsumer());
746	<	waiting.setWaitingConsumer(q.getWaitingConsumerCount());
747	<	threadAssertTrue(q.offer(new Object()));
743	>	public void realRun() throws InterruptedException {
744	>	threadStarted.countDown();
745	>	long startTime = System.nanoTime();
746	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
747	>	assertEquals(0, q.getWaitingConsumerCount());
748	>	assertFalse(q.hasWaitingConsumer());
749	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
750		}});
751
752	<	assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) != null);
753	<	assertTrue(q.getWaitingConsumerCount()
754	<	< waiting.getWaitingConsumers());
755	<	t.join();
752	>	threadStarted.await();
753	>	Callable<Boolean> oneConsumer
754	>	= new Callable<Boolean>() { public Boolean call() {
755	>	return q.hasWaitingConsumer()
756	>	&& q.getWaitingConsumerCount() == 1; }};
757	>	waitForThreadToEnterWaitState(t, oneConsumer);
758	>
759	>	assertTrue(q.offer(one));
760	>	assertEquals(0, q.getWaitingConsumerCount());
761	>	assertFalse(q.hasWaitingConsumer());
762	>
763	>	awaitTermination(t);
764		}
765
766		/**
#	Line 883 | Line 771 | public class LinkedTransferQueueTest ext
771		LinkedTransferQueue q = new LinkedTransferQueue();
772		q.transfer(null);
773		shouldThrow();
774	<	} catch (NullPointerException ex) {
887	<	}
774	>	} catch (NullPointerException success) {}
775		}
776
777		/**
778	<	* transfer waits until a poll occurs. The transfered element
779	<	* is returned by this associated poll.
778	>	* transfer waits until a poll occurs. The transferred element
779	>	* is returned by the associated poll.
780		*/
781		public void testTransfer2() throws InterruptedException {
782	<	final LinkedTransferQueue<Integer> q
783	<	= new LinkedTransferQueue<Integer>();
782	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
783	>	final CountDownLatch threadStarted = new CountDownLatch(1);
784
785		Thread t = newStartedThread(new CheckedRunnable() {
786	<	void realRun() throws InterruptedException {
787	<	q.transfer(SIZE);
788	<	threadAssertTrue(q.isEmpty());
786	>	public void realRun() throws InterruptedException {
787	>	threadStarted.countDown();
788	>	q.transfer(five);
789	>	checkEmpty(q);
790		}});
791
792	<	Thread.sleep(SHORT_DELAY_MS);
793	<	assertEquals(1, q.size());
794	<	assertEquals(SIZE, (int) q.poll());
795	<	assertTrue(q.isEmpty());
796	<	t.join();
792	>	threadStarted.await();
793	>	Callable<Boolean> oneElement
794	>	= new Callable<Boolean>() { public Boolean call() {
795	>	return !q.isEmpty() && q.size() == 1; }};
796	>	waitForThreadToEnterWaitState(t, oneElement);
797	>
798	>	assertSame(five, q.poll());
799	>	checkEmpty(q);
800	>	awaitTermination(t);
801		}
802
803		/**
804		* transfer waits until a poll occurs, and then transfers in fifo order
805		*/
806		public void testTransfer3() throws InterruptedException {
807	<	final LinkedTransferQueue<Integer> q
916	<	= new LinkedTransferQueue<Integer>();
807	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
808
809		Thread first = newStartedThread(new CheckedRunnable() {
810	<	void realRun() throws InterruptedException {
811	<	Integer i = SIZE + 1;
812	<	q.transfer(i);
813	<	threadAssertTrue(!q.contains(i));
923	<	threadAssertEquals(1, q.size());
810	>	public void realRun() throws InterruptedException {
811	>	q.transfer(four);
812	>	assertFalse(q.contains(four));
813	>	assertEquals(1, q.size());
814		}});
815
816		Thread interruptedThread = newStartedThread(
817		new CheckedInterruptedRunnable() {
818	<	void realRun() throws InterruptedException {
819	<	while (q.size() == 0)
818	>	public void realRun() throws InterruptedException {
819	>	while (q.isEmpty())
820		Thread.yield();
821	<	q.transfer(SIZE);
821	>	q.transfer(five);
822		}});
823
824		while (q.size() < 2)
825		Thread.yield();
826		assertEquals(2, q.size());
827	<	assertEquals(SIZE + 1, (int) q.poll());
827	>	assertSame(four, q.poll());
828		first.join();
829		assertEquals(1, q.size());
830		interruptedThread.interrupt();
831		interruptedThread.join();
832	<	assertEquals(0, q.size());
943	<	assertTrue(q.isEmpty());
832	>	checkEmpty(q);
833		}
834
835		/**
#	Line 951 | Line 840 | public class LinkedTransferQueueTest ext
840		final LinkedTransferQueue q = new LinkedTransferQueue();
841
842		Thread t = newStartedThread(new CheckedRunnable() {
843	<	void realRun() throws InterruptedException {
843	>	public void realRun() throws InterruptedException {
844		q.transfer(four);
845	<	threadAssertFalse(q.contains(four));
846	<	threadAssertEquals(three, q.poll());
845	>	assertFalse(q.contains(four));
846	>	assertSame(three, q.poll());
847		}});
848
849	<	Thread.sleep(SHORT_DELAY_MS);
849	>	while (q.isEmpty())
850	>	Thread.yield();
851	>	assertFalse(q.isEmpty());
852	>	assertEquals(1, q.size());
853		assertTrue(q.offer(three));
854	<	assertEquals(four, q.poll());
855	<	t.join();
854	>	assertSame(four, q.poll());
855	>	awaitTermination(t);
856		}
857
858		/**
859	<	* transfer waits until a take occurs. The transfered element
860	<	* is returned by this associated take.
859	>	* transfer waits until a take occurs. The transferred element
860	>	* is returned by the associated take.
861		*/
862		public void testTransfer5() throws InterruptedException {
863	<	final LinkedTransferQueue<Integer> q
972	<	= new LinkedTransferQueue<Integer>();
863	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
864
865		Thread t = newStartedThread(new CheckedRunnable() {
866	<	void realRun() throws InterruptedException {
867	<	q.transfer(SIZE);
866	>	public void realRun() throws InterruptedException {
867	>	q.transfer(four);
868		checkEmpty(q);
869		}});
870
871	<	Thread.sleep(SHORT_DELAY_MS);
872	<	assertEquals(SIZE, (int) q.take());
871	>	while (q.isEmpty())
872	>	Thread.yield();
873	>	assertFalse(q.isEmpty());
874	>	assertEquals(1, q.size());
875	>	assertSame(four, q.take());
876		checkEmpty(q);
877	<	t.join();
877	>	awaitTermination(t);
878		}
879
880		/**
881		* tryTransfer(null) throws NullPointerException
882		*/
883		public void testTryTransfer1() {
884	+	final LinkedTransferQueue q = new LinkedTransferQueue();
885		try {
991	–	final LinkedTransferQueue q = new LinkedTransferQueue();
886		q.tryTransfer(null);
887		shouldThrow();
888	<	} catch (NullPointerException ex) {
995	<	}
888	>	} catch (NullPointerException success) {}
889		}
890
891		/**
#	Line 1015 | Line 908 | public class LinkedTransferQueueTest ext
908		final LinkedTransferQueue q = new LinkedTransferQueue();
909
910		Thread t = newStartedThread(new CheckedRunnable() {
911	<	void realRun() {
911	>	public void realRun() {
912		while (! q.hasWaitingConsumer())
913		Thread.yield();
914	<	threadAssertTrue(q.hasWaitingConsumer());
915	<	threadAssertTrue(q.isEmpty());
916	<	threadAssertTrue(q.size() == 0);
1024	<	threadAssertTrue(q.tryTransfer(hotPotato));
914	>	assertTrue(q.hasWaitingConsumer());
915	>	checkEmpty(q);
916	>	assertTrue(q.tryTransfer(hotPotato));
917		}});
918
919	<	assertTrue(q.poll(MEDIUM_DELAY_MS, MILLISECONDS) == hotPotato);
919	>	long startTime = System.nanoTime();
920	>	assertSame(hotPotato, q.poll(LONG_DELAY_MS, MILLISECONDS));
921	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
922		checkEmpty(q);
923	<	t.join();
923	>	awaitTermination(t);
924		}
925
926		/**
#	Line 1038 | Line 932 | public class LinkedTransferQueueTest ext
932		final LinkedTransferQueue q = new LinkedTransferQueue();
933
934		Thread t = newStartedThread(new CheckedRunnable() {
935	<	void realRun() {
935	>	public void realRun() {
936		while (! q.hasWaitingConsumer())
937		Thread.yield();
938	<	threadAssertTrue(q.hasWaitingConsumer());
939	<	threadAssertTrue(q.isEmpty());
940	<	threadAssertTrue(q.size() == 0);
1047	<	threadAssertTrue(q.tryTransfer(hotPotato));
938	>	assertTrue(q.hasWaitingConsumer());
939	>	checkEmpty(q);
940	>	assertTrue(q.tryTransfer(hotPotato));
941		}});
942
943	<	assertTrue(q.take() == hotPotato);
943	>	assertSame(q.take(), hotPotato);
944		checkEmpty(q);
945	<	t.join();
945	>	awaitTermination(t);
946		}
947
948		/**
949	<	* tryTransfer waits the amount given if interrupted, and
1057	<	* throws interrupted exception
949	>	* tryTransfer blocks interruptibly if no takers
950		*/
951		public void testTryTransfer5() throws InterruptedException {
952		final LinkedTransferQueue q = new LinkedTransferQueue();
953	+	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
954	+	assertTrue(q.isEmpty());
955
956	<	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
957	<	void realRun() throws InterruptedException {
958	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
956	>	Thread t = newStartedThread(new CheckedRunnable() {
957	>	public void realRun() throws InterruptedException {
958	>	long startTime = System.nanoTime();
959	>	Thread.currentThread().interrupt();
960	>	try {
961	>	q.tryTransfer(new Object(), randomTimeout(), randomTimeUnit());
962	>	shouldThrow();
963	>	} catch (InterruptedException success) {}
964	>	assertFalse(Thread.interrupted());
965	>
966	>	pleaseInterrupt.countDown();
967	>	try {
968	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
969	>	shouldThrow();
970	>	} catch (InterruptedException success) {}
971	>	assertFalse(Thread.interrupted());
972	>
973	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
974		}});
975
976	<	Thread.sleep(SMALL_DELAY_MS);
977	<	toInterrupt.interrupt();
978	<	toInterrupt.join();
976	>	await(pleaseInterrupt);
977	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
978	>	t.interrupt();
979	>	awaitTermination(t);
980	>	checkEmpty(q);
981		}
982
983		/**
984	<	* tryTransfer gives up after the timeout and return false
984	>	* tryTransfer gives up after the timeout and returns false
985		*/
986		public void testTryTransfer6() throws InterruptedException {
987		final LinkedTransferQueue q = new LinkedTransferQueue();
988
989		Thread t = newStartedThread(new CheckedRunnable() {
990	<	void realRun() throws InterruptedException {
991	<	threadAssertFalse
992	<	(q.tryTransfer(new Object(),
993	<	SHORT_DELAY_MS, MILLISECONDS));
990	>	public void realRun() throws InterruptedException {
991	>	long startTime = System.nanoTime();
992	>	assertFalse(q.tryTransfer(new Object(),
993	>	timeoutMillis(), MILLISECONDS));
994	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
995	>	checkEmpty(q);
996		}});
997
998	<	Thread.sleep(SMALL_DELAY_MS);
998	>	awaitTermination(t);
999		checkEmpty(q);
1087	–	t.join();
1000		}
1001
1002		/**
#	Line 1096 | Line 1008 | public class LinkedTransferQueueTest ext
1008		assertTrue(q.offer(four));
1009
1010		Thread t = newStartedThread(new CheckedRunnable() {
1011	<	void realRun() throws InterruptedException {
1012	<	threadAssertTrue(q.tryTransfer(five,
1013	<	MEDIUM_DELAY_MS, MILLISECONDS));
1014	<	threadAssertTrue(q.isEmpty());
1011	>	public void realRun() throws InterruptedException {
1012	>	long startTime = System.nanoTime();
1013	>	assertTrue(q.tryTransfer(five, LONG_DELAY_MS, MILLISECONDS));
1014	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1015	>	checkEmpty(q);
1016		}});
1017
1018	<	Thread.sleep(SHORT_DELAY_MS);
1018	>	while (q.size() != 2)
1019	>	Thread.yield();
1020		assertEquals(2, q.size());
1021	<	assertEquals(four, q.poll());
1022	<	assertEquals(five, q.poll());
1021	>	assertSame(four, q.poll());
1022	>	assertSame(five, q.poll());
1023		checkEmpty(q);
1024	<	t.join();
1024	>	awaitTermination(t);
1025		}
1026
1027		/**
1028	<	* tryTransfer attempts to enqueue into the q and fails returning
1029	<	* false not enqueueing and the successive poll is null
1028	>	* tryTransfer attempts to enqueue into the queue and fails
1029	>	* returning false not enqueueing and the successive poll is null
1030		*/
1031		public void testTryTransfer8() throws InterruptedException {
1032		final LinkedTransferQueue q = new LinkedTransferQueue();
1033		assertTrue(q.offer(four));
1034		assertEquals(1, q.size());
1035	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1035	>	long startTime = System.nanoTime();
1036	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
1037	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
1038		assertEquals(1, q.size());
1039	<	assertEquals(four, q.poll());
1124	<	checkEmpty(q);
1039	>	assertSame(four, q.poll());
1040		assertNull(q.poll());
1041	+	checkEmpty(q);
1042		}
1043
1044		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1045	<	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1046	<	assertTrue(q.isEmpty());
1045	>	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
1046	>	checkEmpty(q);
1047		for (int i = 0; i < n; i++) {
1048		assertEquals(i, q.size());
1049		assertTrue(q.offer(i));
#	Line 1137 | Line 1053 | public class LinkedTransferQueueTest ext
1053		return q;
1054		}
1055
1056	<	private static class ConsumerObserver {
1057	<
1058	<	private int waitingConsumers;
1059	<
1060	<	private ConsumerObserver() {
1061	<	}
1062	<
1063	<	private void setWaitingConsumer(int i) {
1064	<	this.waitingConsumers = i;
1065	<	}
1066	<
1067	<	private int getWaitingConsumers() {
1152	<	return waitingConsumers;
1056	>	/**
1057	>	* remove(null), contains(null) always return false
1058	>	*/
1059	>	public void testNeverContainsNull() {
1060	>	Collection<?>[] qs = {
1061	>	new LinkedTransferQueue<Object>(),
1062	>	populatedQueue(2),
1063	>	};
1064	>
1065	>	for (Collection<?> q : qs) {
1066	>	assertFalse(q.contains(null));
1067	>	assertFalse(q.remove(null));
1068		}
1069		}
1070		}

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