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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.6 by dl, Sun Aug 2 12:31:24 2009 UTC vs.
Revision 1.39 by jsr166, Fri Nov 5 00:17:22 2010 UTC

#	Line 13 | Line 13 | import java.io.ObjectInputStream;
13		import java.io.ObjectOutputStream;
14		import java.util.ArrayList;
15		import java.util.Arrays;
16	–	import java.util.ConcurrentModificationException;
16		import java.util.Iterator;
17	+	import java.util.List;
18		import java.util.NoSuchElementException;
19		import java.util.concurrent.*;
20	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
21	+	import static java.util.concurrent.TimeUnit.NANOSECONDS;
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 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());
36		}
37
38		public static Test suite() {
39	<	return new TestSuite(LinkedTransferQueueTest.class);
39	>	return newTestSuite(LinkedTransferQueueTest.class,
40	>	new Generic().testSuite());
41	>	}
42	>
43	>	void checkEmpty(BlockingQueue q) {
44	>	try {
45	>	assertTrue(q.isEmpty());
46	>	assertEquals(0, q.size());
47	>	assertNull(q.peek());
48	>	assertNull(q.poll());
49	>	assertNull(q.poll(0, MILLISECONDS));
50	>	assertEquals(q.toString(), "[]");
51	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
52	>	assertFalse(q.iterator().hasNext());
53	>	try {
54	>	q.element();
55	>	shouldThrow();
56	>	} catch (NoSuchElementException success) {}
57	>	try {
58	>	q.iterator().next();
59	>	shouldThrow();
60	>	} catch (NoSuchElementException success) {}
61	>	try {
62	>	q.remove();
63	>	shouldThrow();
64	>	} catch (NoSuchElementException success) {}
65	>	} catch (InterruptedException ie) {
66	>	threadUnexpectedException(ie);
67	>	}
68		}
69
70		/**
71	<	* Constructor builds new queue with size being zero and empty being true
71	>	* Constructor builds new queue with size being zero and empty
72	>	* being true
73		*/
74		public void testConstructor1() {
75		assertEquals(0, new LinkedTransferQueue().size());
#	Line 39 | Line 77 | public class LinkedTransferQueueTest ext
77		}
78
79		/**
80	<	* Initializing constructor with null collection throws NullPointerException
80	>	* Initializing constructor with null collection throws
81	>	* NullPointerException
82		*/
83		public void testConstructor2() {
84		try {
85		new LinkedTransferQueue(null);
86		shouldThrow();
87	<	} catch (NullPointerException success) {
49	<	}
87	>	} catch (NullPointerException success) {}
88		}
89
90		/**
91	<	* Initializing from Collection of null elements throws NullPointerException
91	>	* Initializing from Collection of null elements throws
92	>	* NullPointerException
93		*/
94		public void testConstructor3() {
95		try {
96		Integer[] ints = new Integer[SIZE];
97	<	LinkedTransferQueue q = new LinkedTransferQueue(Arrays.asList(ints));
97	>	new LinkedTransferQueue(Arrays.asList(ints));
98		shouldThrow();
99	<	} catch (NullPointerException success) {
61	<	}
99	>	} catch (NullPointerException success) {}
100		}
101
102		/**
#	Line 71 | Line 109 | public class LinkedTransferQueueTest ext
109		for (int i = 0; i < SIZE - 1; ++i) {
110		ints[i] = i;
111		}
112	<	LinkedTransferQueue q = new LinkedTransferQueue(Arrays.asList(ints));
112	>	new LinkedTransferQueue(Arrays.asList(ints));
113		shouldThrow();
114	<	} catch (NullPointerException success) {
77	<	}
114	>	} catch (NullPointerException success) {}
115		}
116
117		/**
118		* Queue contains all elements of the collection it is initialized by
119		*/
120		public void testConstructor5() {
121	<	try {
122	<	Integer[] ints = new Integer[SIZE];
123	<	for (int i = 0; i < SIZE; ++i) {
124	<	ints[i] = i;
125	<	}
126	<	LinkedTransferQueue q = new LinkedTransferQueue(Arrays.asList(ints));
127	<	for (int i = 0; i < SIZE; ++i) {
128	<	assertEquals(ints[i], q.poll());
129	<	}
130	<	} finally {
121	>	Integer[] ints = new Integer[SIZE];
122	>	for (int i = 0; i < SIZE; ++i) {
123	>	ints[i] = i;
124	>	}
125	>	List intList = Arrays.asList(ints);
126	>	LinkedTransferQueue q
127	>	= new LinkedTransferQueue(intList);
128	>	assertEquals(q.size(), intList.size());
129	>	assertEquals(q.toString(), intList.toString());
130	>	assertTrue(Arrays.equals(q.toArray(),
131	>	intList.toArray()));
132	>	assertTrue(Arrays.equals(q.toArray(new Object[0]),
133	>	intList.toArray(new Object[0])));
134	>	assertTrue(Arrays.equals(q.toArray(new Object[SIZE]),
135	>	intList.toArray(new Object[SIZE])));
136	>	for (int i = 0; i < SIZE; ++i) {
137	>	assertEquals(ints[i], q.poll());
138		}
139		}
140
141		/**
142	<	* Remaining capacity never decrease nor increase on add or remove
142	>	* remainingCapacity() always returns Integer.MAX_VALUE
143		*/
144		public void testRemainingCapacity() {
145		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
#	Line 119 | Line 163 | public class LinkedTransferQueueTest ext
163		LinkedTransferQueue q = new LinkedTransferQueue();
164		q.offer(null);
165		shouldThrow();
166	<	} catch (NullPointerException success) {
123	<	}
166	>	} catch (NullPointerException success) {}
167		}
168
169		/**
#	Line 131 | Line 174 | public class LinkedTransferQueueTest ext
174		LinkedTransferQueue q = new LinkedTransferQueue();
175		q.add(null);
176		shouldThrow();
177	<	} catch (NullPointerException success) {
135	<	}
177	>	} catch (NullPointerException success) {}
178		}
179
180		/**
#	Line 143 | Line 185 | public class LinkedTransferQueueTest ext
185		LinkedTransferQueue q = new LinkedTransferQueue();
186		q.addAll(null);
187		shouldThrow();
188	<	} catch (NullPointerException success) {
147	<	}
188	>	} catch (NullPointerException success) {}
189		}
190
191		/**
#	Line 155 | Line 196 | public class LinkedTransferQueueTest ext
196		LinkedTransferQueue q = populatedQueue(SIZE);
197		q.addAll(q);
198		shouldThrow();
199	<	} catch (IllegalArgumentException success) {
159	<	}
199	>	} catch (IllegalArgumentException success) {}
200		}
201
202		/**
#	Line 168 | Line 208 | public class LinkedTransferQueueTest ext
208		Integer[] ints = new Integer[SIZE];
209		q.addAll(Arrays.asList(ints));
210		shouldThrow();
211	<	} catch (NullPointerException success) {
172	<	}
211	>	} catch (NullPointerException success) {}
212		}
213
214		/**
215	<	* addAll of a collection with any null elements throws NullPointerException after
216	<	* possibly adding some elements
215	>	* addAll of a collection with any null elements throws
216	>	* NullPointerException after possibly adding some elements
217		*/
218		public void testAddAll3() {
219		try {
#	Line 185 | Line 224 | public class LinkedTransferQueueTest ext
224		}
225		q.addAll(Arrays.asList(ints));
226		shouldThrow();
227	<	} catch (NullPointerException success) {
189	<	}
227	>	} catch (NullPointerException success) {}
228		}
229
230		/**
#	Line 223 | Line 261 | public class LinkedTransferQueueTest ext
261		public void testPut() {
262		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
263		for (int i = 0; i < SIZE; ++i) {
264	+	assertEquals(q.size(), i);
265		q.put(i);
266		assertTrue(q.contains(i));
267		}
229	–	assertEquals(q.size(), SIZE);
268		}
269
270		/**
#	Line 240 | Line 278 | public class LinkedTransferQueueTest ext
278		}
279
280		/**
281	<	* take blocks interruptibly when empty
244	<	*/
245	<	public void testTakeFromEmpty() throws InterruptedException {
246	<	final LinkedTransferQueue q = new LinkedTransferQueue();
247	<	Thread t = new Thread(new Runnable() {
248	<	public void run() {
249	<	try {
250	<	q.take();
251	<	threadShouldThrow();
252	<	} catch (InterruptedException success) {
253	<	} catch (Throwable ex) {
254	<	threadUnexpectedException(ex);
255	<	}
256	<	}});
257	<	t.start();
258	<	Thread.sleep(SHORT_DELAY_MS);
259	<	t.interrupt();
260	<	t.join();
261	<	}
262	<
263	<	/**
264	<	* Take removes existing elements until empty, then blocks interruptibly
281	>	* take removes existing elements until empty, then blocks interruptibly
282		*/
283		public void testBlockingTake() throws InterruptedException {
284	<	Thread t = new Thread(new Runnable() {
285	<	public void run() {
284	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
285	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
286	>	Thread t = newStartedThread(new CheckedRunnable() {
287	>	public void realRun() throws InterruptedException {
288	>	for (int i = 0; i < SIZE; ++i) {
289	>	assertEquals(i, (int) q.take());
290	>	}
291	>	aboutToWait.countDown();
292		try {
270	–	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
271	–	for (int i = 0; i < SIZE; ++i) {
272	–	threadAssertEquals(i, (int) q.take());
273	–	}
293		q.take();
294	<	threadShouldThrow();
295	<	} catch (InterruptedException success) {
277	<	} catch (Throwable ex) {
278	<	threadUnexpectedException(ex);
279	<	}
294	>	shouldThrow();
295	>	} catch (InterruptedException success) {}
296		}});
297	<	t.start();
298	<	Thread.sleep(SHORT_DELAY_MS);
297	>
298	>	aboutToWait.await();
299	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
300		t.interrupt();
301	<	t.join();
301	>	awaitTermination(t, MEDIUM_DELAY_MS);
302	>	checkEmpty(q);
303		}
304
305		/**
306		* poll succeeds unless empty
307		*/
308	<	public void testPoll() {
308	>	public void testPoll() throws InterruptedException {
309		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
310		for (int i = 0; i < SIZE; ++i) {
311		assertEquals(i, (int) q.poll());
312		}
313		assertNull(q.poll());
314	+	checkEmpty(q);
315		}
316
317		/**
318	<	* timed pool with zero timeout succeeds when non-empty, else times out
318	>	* timed poll with zero timeout succeeds when non-empty, else times out
319		*/
320		public void testTimedPoll0() throws InterruptedException {
321		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
322		for (int i = 0; i < SIZE; ++i) {
323	<	assertEquals(i, (int) q.poll(0, TimeUnit.MILLISECONDS));
323	>	assertEquals(i, (int) q.poll(0, MILLISECONDS));
324		}
325	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
325	>	assertNull(q.poll(0, MILLISECONDS));
326	>	checkEmpty(q);
327		}
328
329		/**
330	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
330	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
331		*/
332		public void testTimedPoll() throws InterruptedException {
333		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
334		for (int i = 0; i < SIZE; ++i) {
335	<	assertEquals(i, (int) q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
336	<	}
337	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
335	>	long t0 = System.nanoTime();
336	>	assertEquals(i, (int) q.poll(SMALL_DELAY_MS, MILLISECONDS));
337	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
338	>	}
339	>	long t0 = System.nanoTime();
340	>	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
341	>	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
342	>	checkEmpty(q);
343		}
344
345		/**
#	Line 322 | Line 347 | public class LinkedTransferQueueTest ext
347		* returning timeout status
348		*/
349		public void testInterruptedTimedPoll() throws InterruptedException {
350	<	Thread t = new Thread(new Runnable() {
351	<	public void run() {
350	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
351	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
352	>	Thread t = newStartedThread(new CheckedRunnable() {
353	>	public void realRun() throws InterruptedException {
354	>	for (int i = 0; i < SIZE; ++i) {
355	>	long t0 = System.nanoTime();
356	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
357	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
358	>	}
359	>	long t0 = System.nanoTime();
360	>	aboutToWait.countDown();
361		try {
362	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
363	<	for (int i = 0; i < SIZE; ++i) {
330	<	threadAssertEquals(i, (int) q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
331	<	}
332	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
362	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
363	>	shouldThrow();
364		} catch (InterruptedException success) {
365	<	} catch (Throwable ex) {
335	<	threadUnexpectedException(ex);
365	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
366		}
367		}});
368	<	t.start();
369	<	Thread.sleep(SHORT_DELAY_MS);
368	>
369	>	aboutToWait.await();
370	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
371		t.interrupt();
372	<	t.join();
372	>	awaitTermination(t, MEDIUM_DELAY_MS);
373	>	checkEmpty(q);
374		}
375
376		/**
377	<	* timed poll before a delayed offer fails; after offer succeeds;
378	<	* on interruption throws
377	>	* timed poll after thread interrupted throws InterruptedException
378	>	* instead of returning timeout status
379		*/
380	<	public void testTimedPollWithOffer() throws InterruptedException {
381	<	final LinkedTransferQueue q = new LinkedTransferQueue();
382	<	Thread t = new Thread(new Runnable() {
383	<	public void run() {
384	<	try {
385	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
386	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
387	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
388	<	threadShouldThrow();
357	<	} catch (InterruptedException success) {
358	<	} catch (Throwable ex) {
359	<	threadUnexpectedException(ex);
380	>	public void testTimedPollAfterInterrupt() throws InterruptedException {
381	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
382	>	Thread t = newStartedThread(new CheckedRunnable() {
383	>	public void realRun() throws InterruptedException {
384	>	Thread.currentThread().interrupt();
385	>	for (int i = 0; i < SIZE; ++i) {
386	>	long t0 = System.nanoTime();
387	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
388	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
389		}
390	+	try {
391	+	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
392	+	shouldThrow();
393	+	} catch (InterruptedException success) {}
394		}});
395	<	t.start();
396	<	Thread.sleep(SMALL_DELAY_MS);
397	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
365	<	t.interrupt();
366	<	t.join();
395	>
396	>	awaitTermination(t, MEDIUM_DELAY_MS);
397	>	checkEmpty(q);
398		}
399
400		/**
401		* peek returns next element, or null if empty
402		*/
403	<	public void testPeek() {
403	>	public void testPeek() throws InterruptedException {
404		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
405		for (int i = 0; i < SIZE; ++i) {
406		assertEquals(i, (int) q.peek());
#	Line 378 | Line 409 | public class LinkedTransferQueueTest ext
409		i != (int) q.peek());
410		}
411		assertNull(q.peek());
412	+	checkEmpty(q);
413		}
414
415		/**
416		* element returns next element, or throws NoSuchElementException if empty
417		*/
418	<	public void testElement() {
418	>	public void testElement() throws InterruptedException {
419		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
420		for (int i = 0; i < SIZE; ++i) {
421		assertEquals(i, (int) q.element());
#	Line 392 | Line 424 | public class LinkedTransferQueueTest ext
424		try {
425		q.element();
426		shouldThrow();
427	<	} catch (NoSuchElementException success) {
428	<	}
427	>	} catch (NoSuchElementException success) {}
428	>	checkEmpty(q);
429		}
430
431		/**
432		* remove removes next element, or throws NoSuchElementException if empty
433		*/
434	<	public void testRemove() {
434	>	public void testRemove() throws InterruptedException {
435		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
436		for (int i = 0; i < SIZE; ++i) {
437		assertEquals(i, (int) q.remove());
#	Line 407 | Line 439 | public class LinkedTransferQueueTest ext
439		try {
440		q.remove();
441		shouldThrow();
442	<	} catch (NoSuchElementException success) {
443	<	}
442	>	} catch (NoSuchElementException success) {}
443	>	checkEmpty(q);
444		}
445
446		/**
447		* remove(x) removes x and returns true if present
448		*/
449	<	public void testRemoveElement() {
449	>	public void testRemoveElement() throws InterruptedException {
450		LinkedTransferQueue q = populatedQueue(SIZE);
451		for (int i = 1; i < SIZE; i += 2) {
452		assertTrue(q.remove(i));
#	Line 423 | Line 455 | public class LinkedTransferQueueTest ext
455		assertTrue(q.remove(i));
456		assertFalse(q.remove(i + 1));
457		}
458	<	assertTrue(q.isEmpty());
458	>	checkEmpty(q);
459		}
460
461		/**
#	Line 436 | Line 468 | public class LinkedTransferQueueTest ext
468		assertTrue(q.remove(one));
469		assertTrue(q.remove(two));
470		assertTrue(q.add(three));
471	<	assertTrue(q.take() != null);
471	>	assertSame(q.take(), three);
472		}
473
474		/**
#	Line 454 | Line 486 | public class LinkedTransferQueueTest ext
486		/**
487		* clear removes all elements
488		*/
489	<	public void testClear() {
489	>	public void testClear() throws InterruptedException {
490		LinkedTransferQueue q = populatedQueue(SIZE);
491		q.clear();
492	<	assertTrue(q.isEmpty());
461	<	assertEquals(0, q.size());
492	>	checkEmpty(q);
493		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
494		q.add(one);
495		assertFalse(q.isEmpty());
496	+	assertEquals(1, q.size());
497		assertTrue(q.contains(one));
498		q.clear();
499	<	assertTrue(q.isEmpty());
499	>	checkEmpty(q);
500		}
501
502		/**
#	Line 482 | Line 514 | public class LinkedTransferQueueTest ext
514		}
515
516		/**
517	<	* retainAll(c) retains only those elements of c and reports true if changed
517	>	* retainAll(c) retains only those elements of c and reports true
518	>	* if changed
519		*/
520		public void testRetainAll() {
521		LinkedTransferQueue q = populatedQueue(SIZE);
#	Line 501 | Line 534 | public class LinkedTransferQueueTest ext
534		}
535
536		/**
537	<	* removeAll(c) removes only those elements of c and reports true if changed
537	>	* removeAll(c) removes only those elements of c and reports true
538	>	* if changed
539		*/
540		public void testRemoveAll() {
541		for (int i = 1; i < SIZE; ++i) {
#	Line 516 | Line 550 | public class LinkedTransferQueueTest ext
550		}
551
552		/**
553	<	* toArray contains all elements
553	>	* toArray() contains all elements in FIFO order
554		*/
555	<	public void testToArray() throws InterruptedException {
555	>	public void testToArray() {
556		LinkedTransferQueue q = populatedQueue(SIZE);
557		Object[] o = q.toArray();
558		for (int i = 0; i < o.length; i++) {
559	<	assertEquals(o[i], q.take());
559	>	assertSame(o[i], q.poll());
560		}
561		}
562
563		/**
564	<	* toArray(a) contains all elements
564	>	* toArray(a) contains all elements in FIFO order
565		*/
566	<	public void testToArray2() throws InterruptedException {
566	>	public void testToArray2() {
567		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
568		Integer[] ints = new Integer[SIZE];
569	<	ints = q.toArray(ints);
569	>	Integer[] array = q.toArray(ints);
570	>	assertSame(ints, array);
571		for (int i = 0; i < ints.length; i++) {
572	<	assertEquals(ints[i], q.take());
572	>	assertSame(ints[i], q.poll());
573		}
574		}
575
576		/**
577		* toArray(null) throws NullPointerException
578		*/
579	<	public void testToArray_BadArg() {
579	>	public void testToArray_NullArg() {
580	>	LinkedTransferQueue q = populatedQueue(SIZE);
581		try {
582	<	LinkedTransferQueue q = populatedQueue(SIZE);
547	<	Object o[] = q.toArray(null);
582	>	q.toArray(null);
583		shouldThrow();
584	<	} catch (NullPointerException success) {
550	<	}
584	>	} catch (NullPointerException success) {}
585		}
586
587		/**
588	<	* toArray with incompatible array type throws CCE
588	>	* toArray(incompatible array type) throws ArrayStoreException
589		*/
590		public void testToArray1_BadArg() {
591	+	LinkedTransferQueue q = populatedQueue(SIZE);
592		try {
593	<	LinkedTransferQueue q = populatedQueue(SIZE);
559	<	Object o[] = q.toArray(new String[10]);
593	>	q.toArray(new String[10]);
594		shouldThrow();
595	<	} catch (ArrayStoreException success) {
562	<	}
595	>	} catch (ArrayStoreException success) {}
596		}
597
598		/**
#	Line 568 | Line 601 | public class LinkedTransferQueueTest ext
601		public void testIterator() throws InterruptedException {
602		LinkedTransferQueue q = populatedQueue(SIZE);
603		Iterator it = q.iterator();
604	+	int i = 0;
605		while (it.hasNext()) {
606	<	assertEquals(it.next(), q.take());
606	>	assertEquals(it.next(), i++);
607		}
608	+	assertEquals(i, SIZE);
609		}
610
611		/**
612	<	* iterator.remove removes current element
612	>	* iterator.remove() removes current element
613		*/
614		public void testIteratorRemove() {
615		final LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 587 | Line 622 | public class LinkedTransferQueueTest ext
622		it.remove();
623
624		it = q.iterator();
625	<	assertEquals(it.next(), one);
626	<	assertEquals(it.next(), three);
625	>	assertSame(it.next(), one);
626	>	assertSame(it.next(), three);
627		assertFalse(it.hasNext());
628		}
629
#	Line 596 | Line 631 | public class LinkedTransferQueueTest ext
631		* iterator ordering is FIFO
632		*/
633		public void testIteratorOrdering() {
634	<	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
634	>	final LinkedTransferQueue<Integer> q
635	>	= new LinkedTransferQueue<Integer>();
636		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
637		q.add(one);
638		q.add(two);
#	Line 640 | Line 676 | public class LinkedTransferQueueTest ext
676		*/
677		public void testOfferInExecutor() {
678		final LinkedTransferQueue q = new LinkedTransferQueue();
679	<	q.add(one);
644	<	q.add(two);
679	>	final CountDownLatch threadsStarted = new CountDownLatch(2);
680		ExecutorService executor = Executors.newFixedThreadPool(2);
681	<	executor.execute(new Runnable() {
682	<	public void run() {
683	<	try {
684	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
685	<	} catch (Throwable ex) {
686	<	threadUnexpectedException(ex);
652	<	}
681	>
682	>	executor.execute(new CheckedRunnable() {
683	>	public void realRun() throws InterruptedException {
684	>	threadsStarted.countDown();
685	>	threadsStarted.await();
686	>	assertTrue(q.offer(one, MEDIUM_DELAY_MS, MILLISECONDS));
687		}});
688
689	<	executor.execute(new Runnable() {
690	<	public void run() {
691	<	try {
692	<	Thread.sleep(SMALL_DELAY_MS);
693	<	threadAssertEquals(one, q.take());
694	<	} catch (Throwable ex) {
661	<	threadUnexpectedException(ex);
662	<	}
689	>	executor.execute(new CheckedRunnable() {
690	>	public void realRun() throws InterruptedException {
691	>	threadsStarted.countDown();
692	>	threadsStarted.await();
693	>	assertSame(one, q.take());
694	>	checkEmpty(q);
695		}});
696
697		joinPool(executor);
698		}
699
700		/**
701	<	* poll retrieves elements across Executor threads
701	>	* timed poll retrieves elements across Executor threads
702		*/
703		public void testPollInExecutor() {
704		final LinkedTransferQueue q = new LinkedTransferQueue();
705	+	final CountDownLatch threadsStarted = new CountDownLatch(2);
706		ExecutorService executor = Executors.newFixedThreadPool(2);
707	<	executor.execute(new Runnable() {
708	<	public void run() {
709	<	try {
710	<	threadAssertNull(q.poll());
711	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
712	<	threadAssertTrue(q.isEmpty());
713	<	} catch (Throwable  ex) {
714	<	threadUnexpectedException(ex);
682	<	}
707	>
708	>	executor.execute(new CheckedRunnable() {
709	>	public void realRun() throws InterruptedException {
710	>	assertNull(q.poll());
711	>	threadsStarted.countDown();
712	>	threadsStarted.await();
713	>	assertSame(one, q.poll(SMALL_DELAY_MS, MILLISECONDS));
714	>	checkEmpty(q);
715		}});
716
717	<	executor.execute(new Runnable() {
718	<	public void run() {
719	<	try {
720	<	Thread.sleep(SMALL_DELAY_MS);
721	<	q.put(one);
690	<	} catch (Throwable ex) {
691	<	threadUnexpectedException(ex);
692	<	}
717	>	executor.execute(new CheckedRunnable() {
718	>	public void realRun() throws InterruptedException {
719	>	threadsStarted.countDown();
720	>	threadsStarted.await();
721	>	q.put(one);
722		}});
723
724		joinPool(executor);
#	Line 702 | Line 731 | public class LinkedTransferQueueTest ext
731		LinkedTransferQueue q = populatedQueue(SIZE);
732
733		ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
734	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
734	>	ObjectOutputStream out
735	>	= new ObjectOutputStream(new BufferedOutputStream(bout));
736		out.writeObject(q);
737		out.close();
738
739	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
740	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
739	>	ByteArrayInputStream bin
740	>	= new ByteArrayInputStream(bout.toByteArray());
741	>	ObjectInputStream in
742	>	= new ObjectInputStream(new BufferedInputStream(bin));
743		LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
744
745		assertEquals(q.size(), r.size());
746	+	assertEquals(q.toString(), r.toString());
747	+	assertTrue(Arrays.equals(q.toArray(), r.toArray()));
748		while (!q.isEmpty()) {
749		assertEquals(q.remove(), r.remove());
750		}
#	Line 724 | Line 758 | public class LinkedTransferQueueTest ext
758		try {
759		q.drainTo(null);
760		shouldThrow();
761	<	} catch (NullPointerException success) {
728	<	}
761	>	} catch (NullPointerException success) {}
762		}
763
764		/**
#	Line 736 | Line 769 | public class LinkedTransferQueueTest ext
769		try {
770		q.drainTo(q);
771		shouldThrow();
772	<	} catch (IllegalArgumentException success) {
740	<	}
772	>	} catch (IllegalArgumentException success) {}
773		}
774
775		/**
#	Line 767 | Line 799 | public class LinkedTransferQueueTest ext
799		}
800
801		/**
802	<	* drainTo empties full queue, unblocking a waiting put.
802	>	* drainTo(c) empties full queue, unblocking a waiting put.
803		*/
804		public void testDrainToWithActivePut() throws InterruptedException {
805		final LinkedTransferQueue q = populatedQueue(SIZE);
806	<	Thread t = new Thread(new Runnable() {
807	<	public void run() {
808	<	try {
777	<	q.put(SIZE + 1);
778	<	} catch (Throwable ex) {
779	<	threadUnexpectedException(ex);
780	<	}
806	>	Thread t = newStartedThread(new CheckedRunnable() {
807	>	public void realRun() {
808	>	q.put(SIZE + 1);
809		}});
782	–	t.start();
810		ArrayList l = new ArrayList();
811		q.drainTo(l);
812		assertTrue(l.size() >= SIZE);
813		for (int i = 0; i < SIZE; ++i) {
814		assertEquals(l.get(i), i);
815		}
816	<	t.join();
816	>	awaitTermination(t, MEDIUM_DELAY_MS);
817		assertTrue(q.size() + l.size() >= SIZE);
818		}
819
#	Line 796 | Line 823 | public class LinkedTransferQueueTest ext
823		public void testDrainToNullN() {
824		LinkedTransferQueue q = populatedQueue(SIZE);
825		try {
826	<	q.drainTo(null, 0);
826	>	q.drainTo(null, SIZE);
827		shouldThrow();
828	<	} catch (NullPointerException success) {
802	<	}
828	>	} catch (NullPointerException success) {}
829		}
830
831		/**
#	Line 808 | Line 834 | public class LinkedTransferQueueTest ext
834		public void testDrainToSelfN() {
835		LinkedTransferQueue q = populatedQueue(SIZE);
836		try {
837	<	q.drainTo(q, 0);
837	>	q.drainTo(q, SIZE);
838		shouldThrow();
839	<	} catch (IllegalArgumentException success) {
814	<	}
839	>	} catch (IllegalArgumentException success) {}
840		}
841
842		/**
843	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
843	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
844		*/
845		public void testDrainToN() {
846		LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 837 | Line 862 | public class LinkedTransferQueueTest ext
862		}
863
864		/**
865	<	* poll and take decrement the waiting consumer count
865	>	* timed poll() or take() increments the waiting consumer count;
866	>	* offer(e) decrements the waiting consumer count
867		*/
868		public void testWaitingConsumer() throws InterruptedException {
869		final LinkedTransferQueue q = new LinkedTransferQueue();
870	<	final ConsumerObserver waiting = new ConsumerObserver();
871	<	new Thread(new Runnable() {
872	<	public void run() {
873	<	try {
874	<	threadAssertTrue(q.hasWaitingConsumer());
875	<	waiting.setWaitingConsumer(q.getWaitingConsumerCount());
876	<	threadAssertTrue(q.offer(new Object()));
877	<	} catch (Throwable ex) {
878	<	threadUnexpectedException(ex);
879	<	}
880	<	}}).start();
881	<	assertTrue(q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS) != null);
882	<	assertTrue(q.getWaitingConsumerCount() < waiting.getWaitingConsumers());
870	>	assertEquals(q.getWaitingConsumerCount(), 0);
871	>	assertFalse(q.hasWaitingConsumer());
872	>	final CountDownLatch threadStarted = new CountDownLatch(1);
873	>
874	>	Thread t = newStartedThread(new CheckedRunnable() {
875	>	public void realRun() throws InterruptedException {
876	>	threadStarted.countDown();
877	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
878	>	assertEquals(q.getWaitingConsumerCount(), 0);
879	>	assertFalse(q.hasWaitingConsumer());
880	>	}});
881	>
882	>	threadStarted.await();
883	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
884	>	assertEquals(q.getWaitingConsumerCount(), 1);
885	>	assertTrue(q.hasWaitingConsumer());
886	>
887	>	assertTrue(q.offer(one));
888	>	assertEquals(q.getWaitingConsumerCount(), 0);
889	>	assertFalse(q.hasWaitingConsumer());
890	>
891	>	awaitTermination(t, MEDIUM_DELAY_MS);
892		}
893
894		/**
#	Line 864 | Line 899 | public class LinkedTransferQueueTest ext
899		LinkedTransferQueue q = new LinkedTransferQueue();
900		q.transfer(null);
901		shouldThrow();
902	<	} catch (NullPointerException ex) {
868	<	}
902	>	} catch (NullPointerException success) {}
903		}
904
905		/**
#	Line 873 | Line 907 | public class LinkedTransferQueueTest ext
907		* is returned by this associated poll.
908		*/
909		public void testTransfer2() throws InterruptedException {
910	<	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
911	<
912	<	new Thread(new Runnable() {
913	<	public void run() {
914	<	try {
915	<	q.transfer(SIZE);
916	<	threadAssertTrue(q.isEmpty());
917	<	} catch (Throwable ex) {
918	<	threadUnexpectedException(ex);
919	<	}
886	<	}}).start();
910	>	final LinkedTransferQueue<Integer> q
911	>	= new LinkedTransferQueue<Integer>();
912	>	final CountDownLatch threadStarted = new CountDownLatch(1);
913	>
914	>	Thread t = newStartedThread(new CheckedRunnable() {
915	>	public void realRun() throws InterruptedException {
916	>	threadStarted.countDown();
917	>	q.transfer(five);
918	>	checkEmpty(q);
919	>	}});
920
921	<	Thread.sleep(SHORT_DELAY_MS);
921	>	threadStarted.await();
922	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
923		assertEquals(1, q.size());
924	<	assertEquals(SIZE, (int) q.poll());
925	<	assertTrue(q.isEmpty());
924	>	assertSame(five, q.poll());
925	>	checkEmpty(q);
926	>	awaitTermination(t, MEDIUM_DELAY_MS);
927		}
928
929		/**
930		* transfer waits until a poll occurs, and then transfers in fifo order
931		*/
932		public void testTransfer3() throws InterruptedException {
933	<	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
933	>	final LinkedTransferQueue<Integer> q
934	>	= new LinkedTransferQueue<Integer>();
935
936	<	Thread first =
937	<	new Thread(new Runnable() {
938	<	public void run() {
939	<	try {
940	<	Integer i = SIZE + 1;
941	<	q.transfer(i);
906	<	threadAssertTrue(!q.contains(i));
907	<	threadAssertEquals(1, q.size());
908	<	} catch (Throwable ex) {
909	<	threadUnexpectedException(ex);
910	<	}
911	<	}});
912	<	first.start();
936	>	Thread first = newStartedThread(new CheckedRunnable() {
937	>	public void realRun() throws InterruptedException {
938	>	q.transfer(four);
939	>	assertTrue(!q.contains(four));
940	>	assertEquals(1, q.size());
941	>	}});
942
943	<	Thread interruptedThread =
944	<	new Thread(new Runnable() {
945	<	public void run() {
946	<	try {
947	<	while (q.size() == 0)
948	<	Thread.yield();
920	<	q.transfer(SIZE);
921	<	threadShouldThrow();
922	<	} catch (InterruptedException success) {
923	<	} catch (Throwable ex) {
924	<	threadUnexpectedException(ex);
925	<	}
943	>	Thread interruptedThread = newStartedThread(
944	>	new CheckedInterruptedRunnable() {
945	>	public void realRun() throws InterruptedException {
946	>	while (q.isEmpty())
947	>	Thread.yield();
948	>	q.transfer(five);
949		}});
927	–	interruptedThread.start();
950
951		while (q.size() < 2)
952		Thread.yield();
953		assertEquals(2, q.size());
954	<	assertEquals(SIZE + 1, (int) q.poll());
954	>	assertSame(four, q.poll());
955		first.join();
956		assertEquals(1, q.size());
957		interruptedThread.interrupt();
958		interruptedThread.join();
959	<	assertEquals(0, q.size());
938	<	assertTrue(q.isEmpty());
959	>	checkEmpty(q);
960		}
961
962		/**
#	Line 944 | Line 965 | public class LinkedTransferQueueTest ext
965		*/
966		public void testTransfer4() throws InterruptedException {
967		final LinkedTransferQueue q = new LinkedTransferQueue();
968	<	new Thread(new Runnable() {
969	<	public void run() {
970	<	try {
971	<	q.transfer(four);
972	<	threadAssertFalse(q.contains(four));
973	<	threadAssertEquals(three, q.poll());
974	<	} catch (Throwable ex) {
975	<	threadUnexpectedException(ex);
976	<	}
977	<	}}).start();
978	<	Thread.sleep(MEDIUM_DELAY_MS);
968	>
969	>	Thread t = newStartedThread(new CheckedRunnable() {
970	>	public void realRun() throws InterruptedException {
971	>	q.transfer(four);
972	>	assertFalse(q.contains(four));
973	>	assertSame(three, q.poll());
974	>	}});
975	>
976	>	while (q.isEmpty())
977	>	Thread.yield();
978	>	assertFalse(q.isEmpty());
979	>	assertEquals(1, q.size());
980		assertTrue(q.offer(three));
981	<	assertEquals(four, q.poll());
981	>	assertSame(four, q.poll());
982	>	awaitTermination(t, MEDIUM_DELAY_MS);
983		}
984
985		/**
#	Line 964 | Line 987 | public class LinkedTransferQueueTest ext
987		* is returned by this associated take.
988		*/
989		public void testTransfer5() throws InterruptedException {
990	<	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
990	>	final LinkedTransferQueue<Integer> q
991	>	= new LinkedTransferQueue<Integer>();
992
993	<	new Thread(new Runnable() {
994	<	public void run() {
995	<	try {
996	<	q.transfer(SIZE);
997	<	threadAssertTrue(q.isEmpty());
974	<	} catch (Throwable ex) {
975	<	threadUnexpectedException(ex);
976	<	}
977	<	}}).start();
993	>	Thread t = newStartedThread(new CheckedRunnable() {
994	>	public void realRun() throws InterruptedException {
995	>	q.transfer(four);
996	>	checkEmpty(q);
997	>	}});
998
999	<	Thread.sleep(SHORT_DELAY_MS);
1000	<	assertEquals(SIZE, (int) q.take());
1001	<	assertTrue(q.isEmpty());
999	>	while (q.isEmpty())
1000	>	Thread.yield();
1001	>	assertFalse(q.isEmpty());
1002	>	assertEquals(1, q.size());
1003	>	assertSame(four, q.take());
1004	>	checkEmpty(q);
1005	>	awaitTermination(t, MEDIUM_DELAY_MS);
1006		}
1007
1008		/**
#	Line 988 | Line 1012 | public class LinkedTransferQueueTest ext
1012		try {
1013		final LinkedTransferQueue q = new LinkedTransferQueue();
1014		q.tryTransfer(null);
1015	<	this.shouldThrow();
1016	<	} catch (NullPointerException ex) {
993	<	}
1015	>	shouldThrow();
1016	>	} catch (NullPointerException success) {}
1017		}
1018
1019		/**
1020		* tryTransfer returns false and does not enqueue if there are no
1021		* consumers waiting to poll or take.
1022		*/
1023	<	public void testTryTransfer2() {
1023	>	public void testTryTransfer2() throws InterruptedException {
1024		final LinkedTransferQueue q = new LinkedTransferQueue();
1025		assertFalse(q.tryTransfer(new Object()));
1026		assertFalse(q.hasWaitingConsumer());
1027	<	assertTrue(q.isEmpty());
1005	<	assertEquals(0, q.size());
1027	>	checkEmpty(q);
1028		}
1029
1030		/**
#	Line 1012 | Line 1034 | public class LinkedTransferQueueTest ext
1034		public void testTryTransfer3() throws InterruptedException {
1035		final Object hotPotato = new Object();
1036		final LinkedTransferQueue q = new LinkedTransferQueue();
1037	<	new Thread(new Runnable() {
1038	<	public void run() {
1039	<	try {
1040	<	while (! q.hasWaitingConsumer())
1041	<	Thread.yield();
1042	<	threadAssertTrue(q.hasWaitingConsumer());
1043	<	threadAssertTrue(q.isEmpty());
1044	<	threadAssertTrue(q.size() == 0);
1045	<	threadAssertTrue(q.tryTransfer(hotPotato));
1046	<	} catch (Throwable ex) {
1047	<	threadUnexpectedException(ex);
1048	<	}
1049	<	}}).start();
1028	<	assertTrue(q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS) == hotPotato);
1029	<	assertTrue(q.isEmpty());
1037	>
1038	>	Thread t = newStartedThread(new CheckedRunnable() {
1039	>	public void realRun() {
1040	>	while (! q.hasWaitingConsumer())
1041	>	Thread.yield();
1042	>	assertTrue(q.hasWaitingConsumer());
1043	>	checkEmpty(q);
1044	>	assertTrue(q.tryTransfer(hotPotato));
1045	>	}});
1046	>
1047	>	assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
1048	>	checkEmpty(q);
1049	>	awaitTermination(t, MEDIUM_DELAY_MS);
1050		}
1051
1052		/**
#	Line 1036 | Line 1056 | public class LinkedTransferQueueTest ext
1056		public void testTryTransfer4() throws InterruptedException {
1057		final Object hotPotato = new Object();
1058		final LinkedTransferQueue q = new LinkedTransferQueue();
1059	<	new Thread(new Runnable() {
1060	<	public void run() {
1061	<	try {
1062	<	while (! q.hasWaitingConsumer())
1063	<	Thread.yield();
1064	<	threadAssertTrue(q.hasWaitingConsumer());
1065	<	threadAssertTrue(q.isEmpty());
1066	<	threadAssertTrue(q.size() == 0);
1067	<	threadAssertTrue(q.tryTransfer(hotPotato));
1068	<	} catch (Throwable ex) {
1069	<	threadUnexpectedException(ex);
1070	<	}
1071	<	}}).start();
1052	<	assertTrue(q.take() == hotPotato);
1053	<	assertTrue(q.isEmpty());
1059	>
1060	>	Thread t = newStartedThread(new CheckedRunnable() {
1061	>	public void realRun() {
1062	>	while (! q.hasWaitingConsumer())
1063	>	Thread.yield();
1064	>	assertTrue(q.hasWaitingConsumer());
1065	>	checkEmpty(q);
1066	>	assertTrue(q.tryTransfer(hotPotato));
1067	>	}});
1068	>
1069	>	assertSame(q.take(), hotPotato);
1070	>	checkEmpty(q);
1071	>	awaitTermination(t, MEDIUM_DELAY_MS);
1072		}
1073
1074		/**
#	Line 1059 | Line 1077 | public class LinkedTransferQueueTest ext
1077		*/
1078		public void testTryTransfer5() throws InterruptedException {
1079		final LinkedTransferQueue q = new LinkedTransferQueue();
1080	<	Thread toInterrupt = new Thread(new Runnable() {
1081	<	public void run() {
1080	>	final CountDownLatch threadStarted = new CountDownLatch(1);
1081	>
1082	>	Thread t = newStartedThread(new CheckedRunnable() {
1083	>	public void realRun() throws InterruptedException {
1084	>	long t0 = System.nanoTime();
1085	>	threadStarted.countDown();
1086		try {
1087	<	q.tryTransfer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS);
1088	<	threadShouldThrow();
1089	<	} catch (InterruptedException success) {
1090	<	} catch (Throwable ex) {
1069	<	threadUnexpectedException(ex);
1070	<	}
1087	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
1088	>	shouldThrow();
1089	>	} catch (InterruptedException success) {}
1090	>	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
1091		}});
1092	<	toInterrupt.start();
1093	<	Thread.sleep(SMALL_DELAY_MS);
1094	<	toInterrupt.interrupt();
1092	>
1093	>	threadStarted.await();
1094	>	Thread.sleep(SHORT_DELAY_MS);
1095	>	t.interrupt();
1096	>	awaitTermination(t, MEDIUM_DELAY_MS);
1097	>	checkEmpty(q);
1098		}
1099
1100		/**
1101	<	* tryTransfer gives up after the timeout and return false
1101	>	* tryTransfer gives up after the timeout and returns false
1102		*/
1103		public void testTryTransfer6() throws InterruptedException {
1104		final LinkedTransferQueue q = new LinkedTransferQueue();
1105	<	new Thread(new Runnable() {
1106	<	public void run() {
1107	<	try {
1108	<	threadAssertFalse(q.tryTransfer(new Object(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
1109	<	} catch (Throwable ex) {
1110	<	threadUnexpectedException(ex);
1111	<	}
1112	<	}}).start();
1113	<	Thread.sleep(LONG_DELAY_MS);
1114	<	assertTrue(q.isEmpty());
1105	>
1106	>	Thread t = newStartedThread(new CheckedRunnable() {
1107	>	public void realRun() throws InterruptedException {
1108	>	long t0 = System.nanoTime();
1109	>	assertFalse(q.tryTransfer(new Object(),
1110	>	SHORT_DELAY_MS, MILLISECONDS));
1111	>	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
1112	>	checkEmpty(q);
1113	>	}});
1114	>
1115	>	awaitTermination(t, MEDIUM_DELAY_MS);
1116	>	checkEmpty(q);
1117		}
1118
1119		/**
#	Line 1098 | Line 1123 | public class LinkedTransferQueueTest ext
1123		public void testTryTransfer7() throws InterruptedException {
1124		final LinkedTransferQueue q = new LinkedTransferQueue();
1125		assertTrue(q.offer(four));
1126	<	new Thread(new Runnable() {
1127	<	public void run() {
1128	<	try {
1129	<	threadAssertTrue(q.tryTransfer(five, LONG_DELAY_MS, TimeUnit.MILLISECONDS));
1130	<	threadAssertTrue(q.isEmpty());
1131	<	} catch (Throwable ex) {
1132	<	threadUnexpectedException(ex);
1133	<	}
1134	<	}}).start();
1110	<	Thread.sleep(SHORT_DELAY_MS);
1126	>
1127	>	Thread t = newStartedThread(new CheckedRunnable() {
1128	>	public void realRun() throws InterruptedException {
1129	>	assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
1130	>	checkEmpty(q);
1131	>	}});
1132	>
1133	>	while (q.size() != 2)
1134	>	Thread.yield();
1135		assertEquals(2, q.size());
1136	<	assertEquals(four, q.poll());
1137	<	assertEquals(five, q.poll());
1138	<	assertTrue(q.isEmpty());
1136	>	assertSame(four, q.poll());
1137	>	assertSame(five, q.poll());
1138	>	checkEmpty(q);
1139	>	awaitTermination(t, MEDIUM_DELAY_MS);
1140		}
1141
1142		/**
#	Line 1122 | Line 1147 | public class LinkedTransferQueueTest ext
1147		final LinkedTransferQueue q = new LinkedTransferQueue();
1148		assertTrue(q.offer(four));
1149		assertEquals(1, q.size());
1150	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
1150	>	long t0 = System.nanoTime();
1151	>	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1152	>	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
1153		assertEquals(1, q.size());
1154	<	assertEquals(four, q.poll());
1128	<	threadAssertTrue(q.isEmpty());
1154	>	assertSame(four, q.poll());
1155		assertNull(q.poll());
1156	+	checkEmpty(q);
1157		}
1158
1159		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1160		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1161	<	assertTrue(q.isEmpty());
1161	>	checkEmpty(q);
1162		for (int i = 0; i < n; i++) {
1163		assertEquals(i, q.size());
1164		assertTrue(q.offer(i));
#	Line 1140 | Line 1167 | public class LinkedTransferQueueTest ext
1167		assertFalse(q.isEmpty());
1168		return q;
1169		}
1143	–
1144	–	private static class ConsumerObserver {
1145	–
1146	–	private int waitingConsumers;
1147	–
1148	–	private ConsumerObserver() {
1149	–	}
1150	–
1151	–	private void setWaitingConsumer(int i) {
1152	–	this.waitingConsumers = i;
1153	–	}
1154	–
1155	–	private int getWaitingConsumers() {
1156	–	return waitingConsumers;
1157	–	}
1158	–	}
1170		}

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