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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 1.83 by jsr166, Thu Sep 5 21:11:13 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	>	for (int i = 0; i < SIZE; i++)
285	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
286	>
287	>	Thread.currentThread().interrupt();
288	>	try {
289	>	q.poll(randomTimeout(), randomTimeUnit());
290	>	shouldThrow();
291	>	} catch (InterruptedException success) {}
292	>	assertFalse(Thread.interrupted());
293	>
294	>	pleaseInterrupt.countDown();
295	>	try {
296	>	q.poll(LONGER_DELAY_MS, MILLISECONDS);
297	>	shouldThrow();
298	>	} catch (InterruptedException success) {}
299	>	assertFalse(Thread.interrupted());
300		}});
301	<	Thread.sleep(SMALL_DELAY_MS);
301	>
302	>	await(pleaseInterrupt);
303	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
304		t.interrupt();
305	<	t.join();
305	>	awaitTermination(t);
306		checkEmpty(q);
307		}
308
309		/**
310	<	* timed poll before a delayed offer fails; after offer succeeds;
311	<	* on interruption throws
310	>	* timed poll after thread interrupted throws InterruptedException
311	>	* instead of returning timeout status
312		*/
313	<	public void testTimedPollWithOffer() throws InterruptedException {
314	<	final LinkedTransferQueue q = new LinkedTransferQueue();
315	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
316	<	void realRun() throws InterruptedException {
317	<	threadAssertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
318	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
319	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
313	>	public void testTimedPollAfterInterrupt() throws InterruptedException {
314	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
315	>	Thread t = newStartedThread(new CheckedRunnable() {
316	>	public void realRun() throws InterruptedException {
317	>	long startTime = System.nanoTime();
318	>	Thread.currentThread().interrupt();
319	>	for (int i = 0; i < SIZE; ++i)
320	>	assertEquals(i, (int) q.poll(randomTimeout(), randomTimeUnit()));
321	>	try {
322	>	q.poll(randomTimeout(), randomTimeUnit());
323	>	shouldThrow();
324	>	} catch (InterruptedException success) {}
325	>	assertFalse(Thread.interrupted());
326	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
327		}});
328	<	Thread.sleep(SMALL_DELAY_MS);
329	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
330	<	t.interrupt();
390	<	t.join();
328	>
329	>	awaitTermination(t);
330	>	checkEmpty(q);
331		}
332
333		/**
#	Line 417 | Line 357 | public class LinkedTransferQueueTest ext
357		try {
358		q.element();
359		shouldThrow();
360	<	} catch (NoSuchElementException success) {
421	<	}
360	>	} catch (NoSuchElementException success) {}
361		checkEmpty(q);
362		}
363
#	Line 433 | Line 372 | public class LinkedTransferQueueTest ext
372		try {
373		q.remove();
374		shouldThrow();
375	<	} 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	<	}
375	>	} catch (NoSuchElementException success) {}
376		checkEmpty(q);
377		}
378
#	Line 463 | Line 386 | public class LinkedTransferQueueTest ext
386		assertTrue(q.remove(one));
387		assertTrue(q.remove(two));
388		assertTrue(q.add(three));
389	<	assertTrue(q.take() == three);
389	>	assertSame(q.take(), three);
390		}
391
392		/**
#	Line 499 | Line 422 | public class LinkedTransferQueueTest ext
422		*/
423		public void testContainsAll() {
424		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
425	<	LinkedTransferQueue<Integer> p = new LinkedTransferQueue<Integer>();
425	>	LinkedTransferQueue<Integer> p = new LinkedTransferQueue<>();
426		for (int i = 0; i < SIZE; ++i) {
427		assertTrue(q.containsAll(p));
428		assertFalse(p.containsAll(q));
#	Line 545 | Line 468 | public class LinkedTransferQueueTest ext
468		}
469
470		/**
471	<	* toArray contains all elements
471	>	* toArray() contains all elements in FIFO order
472		*/
473	<	public void testToArray() throws InterruptedException {
473	>	public void testToArray() {
474		LinkedTransferQueue q = populatedQueue(SIZE);
475	<	Object[] o = q.toArray();
476	<	for (int i = 0; i < o.length; i++) {
477	<	assertEquals(o[i], q.take());
478	<	}
475	>	Object[] a = q.toArray();
476	>	assertSame(Object[].class, a.getClass());
477	>	for (Object o : a)
478	>	assertSame(o, q.poll());
479	>	assertTrue(q.isEmpty());
480		}
481
482		/**
483	<	* toArray(a) contains all elements
483	>	* toArray(a) contains all elements in FIFO order
484		*/
485	<	public void testToArray2() throws InterruptedException {
485	>	public void testToArray2() {
486		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
487		Integer[] ints = new Integer[SIZE];
488	<	ints = q.toArray(ints);
489	<	for (int i = 0; i < ints.length; i++) {
490	<	assertEquals(ints[i], q.take());
491	<	}
492	<	}
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	<	}
488	>	Integer[] array = q.toArray(ints);
489	>	assertSame(ints, array);
490	>	for (Integer o : ints)
491	>	assertSame(o, q.poll());
492	>	assertTrue(q.isEmpty());
493		}
494
495		/**
496	<	* toArray with incompatible array type throws CCE
496	>	* toArray(incompatible array type) throws ArrayStoreException
497		*/
498		public void testToArray1_BadArg() {
499	+	LinkedTransferQueue q = populatedQueue(SIZE);
500		try {
501	<	LinkedTransferQueue q = populatedQueue(SIZE);
588	<	Object o[] = q.toArray(new String[10]);
501	>	q.toArray(new String[10]);
502		shouldThrow();
503	<	} catch (ArrayStoreException success) {
591	<	}
503	>	} catch (ArrayStoreException success) {}
504		}
505
506		/**
#	Line 597 | Line 509 | public class LinkedTransferQueueTest ext
509		public void testIterator() throws InterruptedException {
510		LinkedTransferQueue q = populatedQueue(SIZE);
511		Iterator it = q.iterator();
512	<	int i = 0;
513	<	while (it.hasNext()) {
514	<	assertEquals(it.next(), i++);
603	<	}
512	>	int i;
513	>	for (i = 0; it.hasNext(); i++)
514	>	assertTrue(q.contains(it.next()));
515		assertEquals(i, SIZE);
516	+	assertIteratorExhausted(it);
517	+
518	+	it = q.iterator();
519	+	for (i = 0; it.hasNext(); i++)
520	+	assertEquals(it.next(), q.take());
521	+	assertEquals(i, SIZE);
522	+	assertIteratorExhausted(it);
523	+	}
524	+
525	+	/**
526	+	* iterator of empty collection has no elements
527	+	*/
528	+	public void testEmptyIterator() {
529	+	assertIteratorExhausted(new LinkedTransferQueue().iterator());
530		}
531
532		/**
#	Line 618 | Line 543 | public class LinkedTransferQueueTest ext
543		it.remove();
544
545		it = q.iterator();
546	<	assertEquals(it.next(), one);
547	<	assertEquals(it.next(), three);
546	>	assertSame(it.next(), one);
547	>	assertSame(it.next(), three);
548		assertFalse(it.hasNext());
549		}
550
#	Line 627 | Line 552 | public class LinkedTransferQueueTest ext
552		* iterator ordering is FIFO
553		*/
554		public void testIteratorOrdering() {
555	<	final LinkedTransferQueue<Integer> q
631	<	= new LinkedTransferQueue<Integer>();
555	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
556		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
557		q.add(one);
558		q.add(two);
#	Line 663 | Line 587 | public class LinkedTransferQueueTest ext
587		LinkedTransferQueue q = populatedQueue(SIZE);
588		String s = q.toString();
589		for (int i = 0; i < SIZE; ++i) {
590	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
590	>	assertTrue(s.contains(String.valueOf(i)));
591		}
592		}
593
#	Line 672 | Line 596 | public class LinkedTransferQueueTest ext
596		*/
597		public void testOfferInExecutor() {
598		final LinkedTransferQueue q = new LinkedTransferQueue();
599	<	q.add(one);
600	<	q.add(two);
601	<	ExecutorService executor = Executors.newFixedThreadPool(2);
602	<
603	<	executor.execute(new CheckedRunnable() {
604	<	void realRun() {
605	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS,
606	<	MILLISECONDS));
607	<	}});
608	<
609	<	executor.execute(new CheckedRunnable() {
686	<	void realRun() throws InterruptedException {
687	<	Thread.sleep(SMALL_DELAY_MS);
688	<	threadAssertEquals(one, q.take());
689	<	}});
599	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
600	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
601	>	try (PoolCleaner cleaner = cleaner(executor)) {
602	>
603	>	executor.execute(new CheckedRunnable() {
604	>	public void realRun() throws InterruptedException {
605	>	threadsStarted.await();
606	>	long startTime = System.nanoTime();
607	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
608	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
609	>	}});
610
611	<	joinPool(executor);
611	>	executor.execute(new CheckedRunnable() {
612	>	public void realRun() throws InterruptedException {
613	>	threadsStarted.await();
614	>	assertSame(one, q.take());
615	>	checkEmpty(q);
616	>	}});
617	>	}
618		}
619
620		/**
621	<	* poll retrieves elements across Executor threads
621	>	* timed poll retrieves elements across Executor threads
622		*/
623		public void testPollInExecutor() {
624		final LinkedTransferQueue q = new LinkedTransferQueue();
625	<	ExecutorService executor = Executors.newFixedThreadPool(2);
626	<
627	<	executor.execute(new CheckedRunnable() {
628	<	void realRun() throws InterruptedException {
629	<	threadAssertNull(q.poll());
630	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS,
631	<	MILLISECONDS));
632	<	threadAssertTrue(q.isEmpty());
633	<	}});
634	<
635	<	executor.execute(new CheckedRunnable() {
636	<	void realRun() throws InterruptedException {
637	<	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();
625	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
626	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
627	>	try (PoolCleaner cleaner = cleaner(executor)) {
628	>
629	>	executor.execute(new CheckedRunnable() {
630	>	public void realRun() throws InterruptedException {
631	>	assertNull(q.poll());
632	>	threadsStarted.await();
633	>	long startTime = System.nanoTime();
634	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
635	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
636	>	checkEmpty(q);
637	>	}});
638
639	<	assertEquals(q.size(), r.size());
640	<	while (!q.isEmpty()) {
641	<	assertEquals(q.remove(), r.remove());
639	>	executor.execute(new CheckedRunnable() {
640	>	public void realRun() throws InterruptedException {
641	>	threadsStarted.await();
642	>	q.put(one);
643	>	}});
644		}
645		}
646
647		/**
648	<	* drainTo(null) throws NullPointerException
648	>	* A deserialized/reserialized queue has same elements in same order
649		*/
650	<	public void testDrainToNull() {
651	<	LinkedTransferQueue q = populatedQueue(SIZE);
652	<	try {
748	<	q.drainTo(null);
749	<	shouldThrow();
750	<	} catch (NullPointerException success) {
751	<	}
752	<	}
650	>	public void testSerialization() throws Exception {
651	>	Queue x = populatedQueue(SIZE);
652	>	Queue y = serialClone(x);
653
654	<	/**
655	<	* drainTo(this) throws IllegalArgumentException
656	<	*/
657	<	public void testDrainToSelf() {
658	<	LinkedTransferQueue q = populatedQueue(SIZE);
659	<	try {
660	<	q.drainTo(q);
761	<	shouldThrow();
762	<	} catch (IllegalArgumentException success) {
654	>	assertNotSame(y, x);
655	>	assertEquals(x.size(), y.size());
656	>	assertEquals(x.toString(), y.toString());
657	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
658	>	while (!x.isEmpty()) {
659	>	assertFalse(y.isEmpty());
660	>	assertEquals(x.remove(), y.remove());
661		}
662	+	assertTrue(y.isEmpty());
663		}
664
665		/**
#	Line 770 | Line 669 | public class LinkedTransferQueueTest ext
669		LinkedTransferQueue q = populatedQueue(SIZE);
670		ArrayList l = new ArrayList();
671		q.drainTo(l);
672	<	assertEquals(q.size(), 0);
673	<	assertEquals(l.size(), SIZE);
672	>	assertEquals(0, q.size());
673	>	assertEquals(SIZE, l.size());
674		for (int i = 0; i < SIZE; ++i) {
675	<	assertEquals(l.get(i), i);
675	>	assertEquals(i, l.get(i));
676		}
677		q.add(zero);
678		q.add(one);
#	Line 782 | Line 681 | public class LinkedTransferQueueTest ext
681		assertTrue(q.contains(one));
682		l.clear();
683		q.drainTo(l);
684	<	assertEquals(q.size(), 0);
685	<	assertEquals(l.size(), 2);
684	>	assertEquals(0, q.size());
685	>	assertEquals(2, l.size());
686		for (int i = 0; i < 2; ++i) {
687	<	assertEquals(l.get(i), i);
687	>	assertEquals(i, l.get(i));
688		}
689		}
690
691		/**
692	<	* drainTo empties full queue, unblocking a waiting put.
692	>	* drainTo(c) empties full queue, unblocking a waiting put.
693		*/
694		public void testDrainToWithActivePut() throws InterruptedException {
695		final LinkedTransferQueue q = populatedQueue(SIZE);
696		Thread t = newStartedThread(new CheckedRunnable() {
697	<	void realRun() {
697	>	public void realRun() {
698		q.put(SIZE + 1);
699		}});
700		ArrayList l = new ArrayList();
701		q.drainTo(l);
702		assertTrue(l.size() >= SIZE);
703	<	for (int i = 0; i < SIZE; ++i) {
704	<	assertEquals(l.get(i), i);
705	<	}
807	<	t.join();
703	>	for (int i = 0; i < SIZE; ++i)
704	>	assertEquals(i, l.get(i));
705	>	awaitTermination(t);
706		assertTrue(q.size() + l.size() >= SIZE);
707		}
708
709		/**
710	<	* 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
710	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
711		*/
712		public void testDrainToN() {
713		LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 844 | Line 718 | public class LinkedTransferQueueTest ext
718		ArrayList l = new ArrayList();
719		q.drainTo(l, i);
720		int k = (i < SIZE) ? i : SIZE;
721	<	assertEquals(l.size(), k);
722	<	assertEquals(q.size(), SIZE - k);
723	<	for (int j = 0; j < k; ++j) {
724	<	assertEquals(l.get(j), j);
725	<	}
852	<	while (q.poll() != null)
853	<	;
721	>	assertEquals(k, l.size());
722	>	assertEquals(SIZE - k, q.size());
723	>	for (int j = 0; j < k; ++j)
724	>	assertEquals(j, l.get(j));
725	>	do {} while (q.poll() != null);
726		}
727		}
728
729		/**
730	<	* poll and take decrement the waiting consumer count
730	>	* timed poll() or take() increments the waiting consumer count;
731	>	* offer(e) decrements the waiting consumer count
732		*/
733		public void testWaitingConsumer() throws InterruptedException {
734		final LinkedTransferQueue q = new LinkedTransferQueue();
735	<	final ConsumerObserver waiting = new ConsumerObserver();
735	>	assertEquals(0, q.getWaitingConsumerCount());
736	>	assertFalse(q.hasWaitingConsumer());
737	>	final CountDownLatch threadStarted = new CountDownLatch(1);
738
739		Thread t = newStartedThread(new CheckedRunnable() {
740	<	void realRun() throws InterruptedException {
741	<	Thread.sleep(SMALL_DELAY_MS);
742	<	threadAssertTrue(q.hasWaitingConsumer());
743	<	waiting.setWaitingConsumer(q.getWaitingConsumerCount());
744	<	threadAssertTrue(q.offer(new Object()));
740	>	public void realRun() throws InterruptedException {
741	>	threadStarted.countDown();
742	>	long startTime = System.nanoTime();
743	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
744	>	assertEquals(0, q.getWaitingConsumerCount());
745	>	assertFalse(q.hasWaitingConsumer());
746	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
747		}});
748
749	<	assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) != null);
750	<	assertTrue(q.getWaitingConsumerCount()
751	<	< waiting.getWaitingConsumers());
752	<	t.join();
749	>	threadStarted.await();
750	>	Callable<Boolean> oneConsumer
751	>	= new Callable<Boolean>() { public Boolean call() {
752	>	return q.hasWaitingConsumer()
753	>	&& q.getWaitingConsumerCount() == 1; }};
754	>	waitForThreadToEnterWaitState(t, oneConsumer);
755	>
756	>	assertTrue(q.offer(one));
757	>	assertEquals(0, q.getWaitingConsumerCount());
758	>	assertFalse(q.hasWaitingConsumer());
759	>
760	>	awaitTermination(t);
761		}
762
763		/**
#	Line 883 | Line 768 | public class LinkedTransferQueueTest ext
768		LinkedTransferQueue q = new LinkedTransferQueue();
769		q.transfer(null);
770		shouldThrow();
771	<	} catch (NullPointerException ex) {
887	<	}
771	>	} catch (NullPointerException success) {}
772		}
773
774		/**
775	<	* transfer waits until a poll occurs. The transfered element
776	<	* is returned by this associated poll.
775	>	* transfer waits until a poll occurs. The transferred element
776	>	* is returned by the associated poll.
777		*/
778		public void testTransfer2() throws InterruptedException {
779	<	final LinkedTransferQueue<Integer> q
780	<	= new LinkedTransferQueue<Integer>();
779	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
780	>	final CountDownLatch threadStarted = new CountDownLatch(1);
781
782		Thread t = newStartedThread(new CheckedRunnable() {
783	<	void realRun() throws InterruptedException {
784	<	q.transfer(SIZE);
785	<	threadAssertTrue(q.isEmpty());
783	>	public void realRun() throws InterruptedException {
784	>	threadStarted.countDown();
785	>	q.transfer(five);
786	>	checkEmpty(q);
787		}});
788
789	<	Thread.sleep(SHORT_DELAY_MS);
790	<	assertEquals(1, q.size());
791	<	assertEquals(SIZE, (int) q.poll());
792	<	assertTrue(q.isEmpty());
793	<	t.join();
789	>	threadStarted.await();
790	>	Callable<Boolean> oneElement
791	>	= new Callable<Boolean>() { public Boolean call() {
792	>	return !q.isEmpty() && q.size() == 1; }};
793	>	waitForThreadToEnterWaitState(t, oneElement);
794	>
795	>	assertSame(five, q.poll());
796	>	checkEmpty(q);
797	>	awaitTermination(t);
798		}
799
800		/**
801		* transfer waits until a poll occurs, and then transfers in fifo order
802		*/
803		public void testTransfer3() throws InterruptedException {
804	<	final LinkedTransferQueue<Integer> q
916	<	= new LinkedTransferQueue<Integer>();
804	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
805
806		Thread first = newStartedThread(new CheckedRunnable() {
807	<	void realRun() throws InterruptedException {
808	<	Integer i = SIZE + 1;
809	<	q.transfer(i);
810	<	threadAssertTrue(!q.contains(i));
923	<	threadAssertEquals(1, q.size());
807	>	public void realRun() throws InterruptedException {
808	>	q.transfer(four);
809	>	assertFalse(q.contains(four));
810	>	assertEquals(1, q.size());
811		}});
812
813		Thread interruptedThread = newStartedThread(
814		new CheckedInterruptedRunnable() {
815	<	void realRun() throws InterruptedException {
816	<	while (q.size() == 0)
815	>	public void realRun() throws InterruptedException {
816	>	while (q.isEmpty())
817		Thread.yield();
818	<	q.transfer(SIZE);
818	>	q.transfer(five);
819		}});
820
821		while (q.size() < 2)
822		Thread.yield();
823		assertEquals(2, q.size());
824	<	assertEquals(SIZE + 1, (int) q.poll());
824	>	assertSame(four, q.poll());
825		first.join();
826		assertEquals(1, q.size());
827		interruptedThread.interrupt();
828		interruptedThread.join();
829	<	assertEquals(0, q.size());
943	<	assertTrue(q.isEmpty());
829	>	checkEmpty(q);
830		}
831
832		/**
#	Line 951 | Line 837 | public class LinkedTransferQueueTest ext
837		final LinkedTransferQueue q = new LinkedTransferQueue();
838
839		Thread t = newStartedThread(new CheckedRunnable() {
840	<	void realRun() throws InterruptedException {
840	>	public void realRun() throws InterruptedException {
841		q.transfer(four);
842	<	threadAssertFalse(q.contains(four));
843	<	threadAssertEquals(three, q.poll());
842	>	assertFalse(q.contains(four));
843	>	assertSame(three, q.poll());
844		}});
845
846	<	Thread.sleep(SHORT_DELAY_MS);
846	>	while (q.isEmpty())
847	>	Thread.yield();
848	>	assertFalse(q.isEmpty());
849	>	assertEquals(1, q.size());
850		assertTrue(q.offer(three));
851	<	assertEquals(four, q.poll());
852	<	t.join();
851	>	assertSame(four, q.poll());
852	>	awaitTermination(t);
853		}
854
855		/**
856	<	* transfer waits until a take occurs. The transfered element
857	<	* is returned by this associated take.
856	>	* transfer waits until a take occurs. The transferred element
857	>	* is returned by the associated take.
858		*/
859		public void testTransfer5() throws InterruptedException {
860	<	final LinkedTransferQueue<Integer> q
972	<	= new LinkedTransferQueue<Integer>();
860	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
861
862		Thread t = newStartedThread(new CheckedRunnable() {
863	<	void realRun() throws InterruptedException {
864	<	q.transfer(SIZE);
863	>	public void realRun() throws InterruptedException {
864	>	q.transfer(four);
865		checkEmpty(q);
866		}});
867
868	<	Thread.sleep(SHORT_DELAY_MS);
869	<	assertEquals(SIZE, (int) q.take());
868	>	while (q.isEmpty())
869	>	Thread.yield();
870	>	assertFalse(q.isEmpty());
871	>	assertEquals(1, q.size());
872	>	assertSame(four, q.take());
873		checkEmpty(q);
874	<	t.join();
874	>	awaitTermination(t);
875		}
876
877		/**
878		* tryTransfer(null) throws NullPointerException
879		*/
880		public void testTryTransfer1() {
881	+	final LinkedTransferQueue q = new LinkedTransferQueue();
882		try {
991	–	final LinkedTransferQueue q = new LinkedTransferQueue();
883		q.tryTransfer(null);
884		shouldThrow();
885	<	} catch (NullPointerException ex) {
995	<	}
885	>	} catch (NullPointerException success) {}
886		}
887
888		/**
#	Line 1015 | Line 905 | public class LinkedTransferQueueTest ext
905		final LinkedTransferQueue q = new LinkedTransferQueue();
906
907		Thread t = newStartedThread(new CheckedRunnable() {
908	<	void realRun() {
908	>	public void realRun() {
909		while (! q.hasWaitingConsumer())
910		Thread.yield();
911	<	threadAssertTrue(q.hasWaitingConsumer());
912	<	threadAssertTrue(q.isEmpty());
913	<	threadAssertTrue(q.size() == 0);
1024	<	threadAssertTrue(q.tryTransfer(hotPotato));
911	>	assertTrue(q.hasWaitingConsumer());
912	>	checkEmpty(q);
913	>	assertTrue(q.tryTransfer(hotPotato));
914		}});
915
916	<	assertTrue(q.poll(MEDIUM_DELAY_MS, MILLISECONDS) == hotPotato);
916	>	long startTime = System.nanoTime();
917	>	assertSame(hotPotato, q.poll(LONG_DELAY_MS, MILLISECONDS));
918	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
919		checkEmpty(q);
920	<	t.join();
920	>	awaitTermination(t);
921		}
922
923		/**
#	Line 1038 | Line 929 | public class LinkedTransferQueueTest ext
929		final LinkedTransferQueue q = new LinkedTransferQueue();
930
931		Thread t = newStartedThread(new CheckedRunnable() {
932	<	void realRun() {
932	>	public void realRun() {
933		while (! q.hasWaitingConsumer())
934		Thread.yield();
935	<	threadAssertTrue(q.hasWaitingConsumer());
936	<	threadAssertTrue(q.isEmpty());
937	<	threadAssertTrue(q.size() == 0);
1047	<	threadAssertTrue(q.tryTransfer(hotPotato));
935	>	assertTrue(q.hasWaitingConsumer());
936	>	checkEmpty(q);
937	>	assertTrue(q.tryTransfer(hotPotato));
938		}});
939
940	<	assertTrue(q.take() == hotPotato);
940	>	assertSame(q.take(), hotPotato);
941		checkEmpty(q);
942	<	t.join();
942	>	awaitTermination(t);
943		}
944
945		/**
946	<	* tryTransfer waits the amount given if interrupted, and
1057	<	* throws interrupted exception
946	>	* tryTransfer blocks interruptibly if no takers
947		*/
948		public void testTryTransfer5() throws InterruptedException {
949		final LinkedTransferQueue q = new LinkedTransferQueue();
950	+	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
951	+	assertTrue(q.isEmpty());
952
953	<	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
954	<	void realRun() throws InterruptedException {
955	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
953	>	Thread t = newStartedThread(new CheckedRunnable() {
954	>	public void realRun() throws InterruptedException {
955	>	long startTime = System.nanoTime();
956	>	Thread.currentThread().interrupt();
957	>	try {
958	>	q.tryTransfer(new Object(), randomTimeout(), randomTimeUnit());
959	>	shouldThrow();
960	>	} catch (InterruptedException success) {}
961	>	assertFalse(Thread.interrupted());
962	>
963	>	pleaseInterrupt.countDown();
964	>	try {
965	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
966	>	shouldThrow();
967	>	} catch (InterruptedException success) {}
968	>	assertFalse(Thread.interrupted());
969	>
970	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
971		}});
972
973	<	Thread.sleep(SMALL_DELAY_MS);
974	<	toInterrupt.interrupt();
975	<	toInterrupt.join();
973	>	await(pleaseInterrupt);
974	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
975	>	t.interrupt();
976	>	awaitTermination(t);
977	>	checkEmpty(q);
978		}
979
980		/**
981	<	* tryTransfer gives up after the timeout and return false
981	>	* tryTransfer gives up after the timeout and returns false
982		*/
983		public void testTryTransfer6() throws InterruptedException {
984		final LinkedTransferQueue q = new LinkedTransferQueue();
985
986		Thread t = newStartedThread(new CheckedRunnable() {
987	<	void realRun() throws InterruptedException {
988	<	threadAssertFalse
989	<	(q.tryTransfer(new Object(),
990	<	SHORT_DELAY_MS, MILLISECONDS));
987	>	public void realRun() throws InterruptedException {
988	>	long startTime = System.nanoTime();
989	>	assertFalse(q.tryTransfer(new Object(),
990	>	timeoutMillis(), MILLISECONDS));
991	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
992	>	checkEmpty(q);
993		}});
994
995	<	Thread.sleep(SMALL_DELAY_MS);
995	>	awaitTermination(t);
996		checkEmpty(q);
1087	–	t.join();
997		}
998
999		/**
#	Line 1096 | Line 1005 | public class LinkedTransferQueueTest ext
1005		assertTrue(q.offer(four));
1006
1007		Thread t = newStartedThread(new CheckedRunnable() {
1008	<	void realRun() throws InterruptedException {
1009	<	threadAssertTrue(q.tryTransfer(five,
1010	<	MEDIUM_DELAY_MS, MILLISECONDS));
1011	<	threadAssertTrue(q.isEmpty());
1008	>	public void realRun() throws InterruptedException {
1009	>	long startTime = System.nanoTime();
1010	>	assertTrue(q.tryTransfer(five, LONG_DELAY_MS, MILLISECONDS));
1011	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1012	>	checkEmpty(q);
1013		}});
1014
1015	<	Thread.sleep(SHORT_DELAY_MS);
1015	>	while (q.size() != 2)
1016	>	Thread.yield();
1017		assertEquals(2, q.size());
1018	<	assertEquals(four, q.poll());
1019	<	assertEquals(five, q.poll());
1018	>	assertSame(four, q.poll());
1019	>	assertSame(five, q.poll());
1020		checkEmpty(q);
1021	<	t.join();
1021	>	awaitTermination(t);
1022		}
1023
1024		/**
1025	<	* tryTransfer attempts to enqueue into the q and fails returning
1026	<	* false not enqueueing and the successive poll is null
1025	>	* tryTransfer attempts to enqueue into the queue and fails
1026	>	* returning false not enqueueing and the successive poll is null
1027		*/
1028		public void testTryTransfer8() throws InterruptedException {
1029		final LinkedTransferQueue q = new LinkedTransferQueue();
1030		assertTrue(q.offer(four));
1031		assertEquals(1, q.size());
1032	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1032	>	long startTime = System.nanoTime();
1033	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
1034	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
1035		assertEquals(1, q.size());
1036	<	assertEquals(four, q.poll());
1124	<	checkEmpty(q);
1036	>	assertSame(four, q.poll());
1037		assertNull(q.poll());
1038	+	checkEmpty(q);
1039		}
1040
1041		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1042	<	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1043	<	assertTrue(q.isEmpty());
1042	>	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
1043	>	checkEmpty(q);
1044		for (int i = 0; i < n; i++) {
1045		assertEquals(i, q.size());
1046		assertTrue(q.offer(i));
#	Line 1137 | Line 1050 | public class LinkedTransferQueueTest ext
1050		return q;
1051		}
1052
1053	<	private static class ConsumerObserver {
1054	<
1055	<	private int waitingConsumers;
1056	<
1057	<	private ConsumerObserver() {
1058	<	}
1059	<
1060	<	private void setWaitingConsumer(int i) {
1061	<	this.waitingConsumers = i;
1062	<	}
1063	<
1064	<	private int getWaitingConsumers() {
1152	<	return waitingConsumers;
1053	>	/**
1054	>	* remove(null), contains(null) always return false
1055	>	*/
1056	>	public void testNeverContainsNull() {
1057	>	Collection<?>[] qs = {
1058	>	new LinkedTransferQueue<Object>(),
1059	>	populatedQueue(2),
1060	>	};
1061	>
1062	>	for (Collection<?> q : qs) {
1063	>	assertFalse(q.contains(null));
1064	>	assertFalse(q.remove(null));
1065		}
1066		}
1067		}

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