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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.5 by jsr166, Sun Aug 2 08:17:31 2009 UTC vs.
Revision 1.55 by jsr166, Wed Dec 31 19:05:43 2014 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.*;
16	>	import java.util.Queue;
17	>	import java.util.concurrent.BlockingQueue;
18	>	import java.util.concurrent.CountDownLatch;
19	>	import java.util.concurrent.Executors;
20	>	import java.util.concurrent.ExecutorService;
21	>	import java.util.concurrent.LinkedTransferQueue;
22	>
23		import junit.framework.Test;
21	–	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		/**
44	<	* Constructor builds new queue with size being zero and empty being true
44	>	* Constructor builds new queue with size being zero and empty
45	>	* being true
46		*/
47		public void testConstructor1() {
48		assertEquals(0, new LinkedTransferQueue().size());
#	Line 39 | Line 50 | public class LinkedTransferQueueTest ext
50		}
51
52		/**
53	<	* Initializing constructor with null collection throws NullPointerException
53	>	* Initializing constructor with null collection throws
54	>	* NullPointerException
55		*/
56		public void testConstructor2() {
57		try {
58		new LinkedTransferQueue(null);
59		shouldThrow();
60	<	} catch (NullPointerException success) {
49	<	}
60	>	} catch (NullPointerException success) {}
61		}
62
63		/**
64	<	* Initializing from Collection of null elements throws NullPointerException
64	>	* Initializing from Collection of null elements throws
65	>	* NullPointerException
66		*/
67		public void testConstructor3() {
68	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
69		try {
70	<	Integer[] ints = new Integer[SIZE];
58	<	LinkedTransferQueue q = new LinkedTransferQueue(Arrays.asList(ints));
70	>	new LinkedTransferQueue(elements);
71		shouldThrow();
72	<	} catch (NullPointerException success) {
61	<	}
72	>	} catch (NullPointerException success) {}
73		}
74
75		/**
#	Line 66 | Line 77 | public class LinkedTransferQueueTest ext
77		* throws NullPointerException
78		*/
79		public void testConstructor4() {
80	+	Integer[] ints = new Integer[SIZE];
81	+	for (int i = 0; i < SIZE-1; ++i)
82	+	ints[i] = i;
83	+	Collection<Integer> elements = Arrays.asList(ints);
84		try {
85	<	Integer[] ints = new Integer[SIZE];
71	<	for (int i = 0; i < SIZE - 1; ++i) {
72	<	ints[i] = i;
73	<	}
74	<	LinkedTransferQueue q = new LinkedTransferQueue(Arrays.asList(ints));
85	>	new LinkedTransferQueue(elements);
86		shouldThrow();
87	<	} catch (NullPointerException success) {
77	<	}
87	>	} catch (NullPointerException success) {}
88		}
89
90		/**
91		* Queue contains all elements of the collection it is initialized by
92		*/
93		public void testConstructor5() {
94	<	try {
95	<	Integer[] ints = new Integer[SIZE];
96	<	for (int i = 0; i < SIZE; ++i) {
97	<	ints[i] = i;
98	<	}
99	<	LinkedTransferQueue q = new LinkedTransferQueue(Arrays.asList(ints));
100	<	for (int i = 0; i < SIZE; ++i) {
101	<	assertEquals(ints[i], q.poll());
102	<	}
103	<	} finally {
94	>	Integer[] ints = new Integer[SIZE];
95	>	for (int i = 0; i < SIZE; ++i) {
96	>	ints[i] = i;
97	>	}
98	>	List intList = Arrays.asList(ints);
99	>	LinkedTransferQueue q
100	>	= new LinkedTransferQueue(intList);
101	>	assertEquals(q.size(), intList.size());
102	>	assertEquals(q.toString(), intList.toString());
103	>	assertTrue(Arrays.equals(q.toArray(),
104	>	intList.toArray()));
105	>	assertTrue(Arrays.equals(q.toArray(new Object[0]),
106	>	intList.toArray(new Object[0])));
107	>	assertTrue(Arrays.equals(q.toArray(new Object[SIZE]),
108	>	intList.toArray(new Object[SIZE])));
109	>	for (int i = 0; i < SIZE; ++i) {
110	>	assertEquals(ints[i], q.poll());
111		}
112		}
113
114		/**
115	<	* Remaining capacity never decrease nor increase on add or remove
115	>	* remainingCapacity() always returns Integer.MAX_VALUE
116		*/
117		public void testRemainingCapacity() {
118		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
#	Line 112 | Line 129 | public class LinkedTransferQueueTest ext
129		}
130
131		/**
115	–	* offer(null) throws NullPointerException
116	–	*/
117	–	public void testOfferNull() {
118	–	try {
119	–	LinkedTransferQueue q = new LinkedTransferQueue();
120	–	q.offer(null);
121	–	shouldThrow();
122	–	} catch (NullPointerException success) {
123	–	}
124	–	}
125	–
126	–	/**
127	–	* add(null) throws NullPointerException
128	–	*/
129	–	public void testAddNull() {
130	–	try {
131	–	LinkedTransferQueue q = new LinkedTransferQueue();
132	–	q.add(null);
133	–	shouldThrow();
134	–	} catch (NullPointerException success) {
135	–	}
136	–	}
137	–
138	–	/**
139	–	* addAll(null) throws NullPointerException
140	–	*/
141	–	public void testAddAll1() {
142	–	try {
143	–	LinkedTransferQueue q = new LinkedTransferQueue();
144	–	q.addAll(null);
145	–	shouldThrow();
146	–	} catch (NullPointerException success) {
147	–	}
148	–	}
149	–
150	–	/**
132		* addAll(this) throws IllegalArgumentException
133		*/
134		public void testAddAllSelf() {
#	Line 155 | Line 136 | public class LinkedTransferQueueTest ext
136		LinkedTransferQueue q = populatedQueue(SIZE);
137		q.addAll(q);
138		shouldThrow();
139	<	} catch (IllegalArgumentException success) {
159	<	}
160	<	}
161	<
162	<	/**
163	<	* addAll of a collection with null elements throws NullPointerException
164	<	*/
165	<	public void testAddAll2() {
166	<	try {
167	<	LinkedTransferQueue q = new LinkedTransferQueue();
168	<	Integer[] ints = new Integer[SIZE];
169	<	q.addAll(Arrays.asList(ints));
170	<	shouldThrow();
171	<	} catch (NullPointerException success) {
172	<	}
139	>	} catch (IllegalArgumentException success) {}
140		}
141
142		/**
143	<	* addAll of a collection with any null elements throws NullPointerException after
144	<	* possibly adding some elements
143	>	* addAll of a collection with any null elements throws
144	>	* NullPointerException after possibly adding some elements
145		*/
146		public void testAddAll3() {
147		try {
#	Line 185 | Line 152 | public class LinkedTransferQueueTest ext
152		}
153		q.addAll(Arrays.asList(ints));
154		shouldThrow();
155	<	} catch (NullPointerException success) {
189	<	}
155	>	} catch (NullPointerException success) {}
156		}
157
158		/**
#	Line 207 | Line 173 | public class LinkedTransferQueueTest ext
173		}
174
175		/**
210	–	* put(null) throws NullPointerException
211	–	*/
212	–	public void testPutNull() throws InterruptedException {
213	–	try {
214	–	LinkedTransferQueue q = new LinkedTransferQueue();
215	–	q.put(null);
216	–	shouldThrow();
217	–	} catch (NullPointerException success) {}
218	–	}
219	–
220	–	/**
176		* all elements successfully put are contained
177		*/
178		public void testPut() {
179		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
180		for (int i = 0; i < SIZE; ++i) {
181	+	assertEquals(i, q.size());
182		q.put(i);
183		assertTrue(q.contains(i));
184		}
229	–	assertEquals(q.size(), SIZE);
185		}
186
187		/**
#	Line 240 | Line 195 | public class LinkedTransferQueueTest ext
195		}
196
197		/**
198	<	* take blocks interruptibly when empty
198	>	* take removes existing elements until empty, then blocks interruptibly
199		*/
200	<	public void testTakeFromEmpty() throws InterruptedException {
201	<	final LinkedTransferQueue q = new LinkedTransferQueue();
202	<	Thread t = new Thread(new Runnable() {
203	<	public void run() {
200	>	public void testBlockingTake() throws InterruptedException {
201	>	final BlockingQueue q = populatedQueue(SIZE);
202	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
203	>	Thread t = newStartedThread(new CheckedRunnable() {
204	>	public void realRun() throws InterruptedException {
205	>	for (int i = 0; i < SIZE; ++i) {
206	>	assertEquals(i, q.take());
207	>	}
208	>
209	>	Thread.currentThread().interrupt();
210		try {
211		q.take();
212	<	threadShouldThrow();
213	<	} catch (InterruptedException success) {
214	<	} catch (Throwable ex) {
254	<	threadUnexpectedException(ex);
255	<	}
256	<	}});
257	<	t.start();
258	<	Thread.sleep(SHORT_DELAY_MS);
259	<	t.interrupt();
260	<	t.join();
261	<	}
212	>	shouldThrow();
213	>	} catch (InterruptedException success) {}
214	>	assertFalse(Thread.interrupted());
215
216	<	/**
264	<	* Take removes existing elements until empty, then blocks interruptibly
265	<	*/
266	<	public void testBlockingTake() throws InterruptedException {
267	<	Thread t = new Thread(new Runnable() {
268	<	public void run() {
216	>	pleaseInterrupt.countDown();
217		try {
270	–	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
271	–	for (int i = 0; i < SIZE; ++i) {
272	–	threadAssertEquals(i, (int) q.take());
273	–	}
218		q.take();
219	<	threadShouldThrow();
220	<	} catch (InterruptedException success) {
221	<	} catch (Throwable ex) {
278	<	threadUnexpectedException(ex);
279	<	}
219	>	shouldThrow();
220	>	} catch (InterruptedException success) {}
221	>	assertFalse(Thread.interrupted());
222		}});
223	<	t.start();
224	<	Thread.sleep(SHORT_DELAY_MS);
223	>
224	>	await(pleaseInterrupt);
225	>	assertThreadStaysAlive(t);
226		t.interrupt();
227	<	t.join();
227	>	awaitTermination(t);
228		}
229
230		/**
231		* poll succeeds unless empty
232		*/
233	<	public void testPoll() {
233	>	public void testPoll() throws InterruptedException {
234		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
235		for (int i = 0; i < SIZE; ++i) {
236		assertEquals(i, (int) q.poll());
237		}
238		assertNull(q.poll());
239	+	checkEmpty(q);
240		}
241
242		/**
243	<	* timed pool with zero timeout succeeds when non-empty, else times out
243	>	* timed poll with zero timeout succeeds when non-empty, else times out
244		*/
245		public void testTimedPoll0() throws InterruptedException {
246		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
247		for (int i = 0; i < SIZE; ++i) {
248	<	assertEquals(i, (int) q.poll(0, TimeUnit.MILLISECONDS));
248	>	assertEquals(i, (int) q.poll(0, MILLISECONDS));
249		}
250	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
250	>	assertNull(q.poll(0, MILLISECONDS));
251	>	checkEmpty(q);
252		}
253
254		/**
255	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
255	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
256		*/
257		public void testTimedPoll() throws InterruptedException {
258		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
259		for (int i = 0; i < SIZE; ++i) {
260	<	assertEquals(i, (int) q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
261	<	}
262	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
260	>	long startTime = System.nanoTime();
261	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
262	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
263	>	}
264	>	long startTime = System.nanoTime();
265	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
266	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
267	>	checkEmpty(q);
268		}
269
270		/**
#	Line 322 | Line 272 | public class LinkedTransferQueueTest ext
272		* returning timeout status
273		*/
274		public void testInterruptedTimedPoll() throws InterruptedException {
275	<	Thread t = new Thread(new Runnable() {
276	<	public void run() {
275	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
276	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
277	>	Thread t = newStartedThread(new CheckedRunnable() {
278	>	public void realRun() throws InterruptedException {
279	>	for (int i = 0; i < SIZE; ++i) {
280	>	long t0 = System.nanoTime();
281	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
282	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
283	>	}
284	>	long t0 = System.nanoTime();
285	>	aboutToWait.countDown();
286		try {
287	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
288	<	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));
287	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
288	>	shouldThrow();
289		} catch (InterruptedException success) {
290	<	} catch (Throwable ex) {
335	<	threadUnexpectedException(ex);
290	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
291		}
292		}});
293	<	t.start();
294	<	Thread.sleep(SHORT_DELAY_MS);
293	>
294	>	aboutToWait.await();
295	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
296		t.interrupt();
297	<	t.join();
297	>	awaitTermination(t, MEDIUM_DELAY_MS);
298	>	checkEmpty(q);
299		}
300
301		/**
302	<	* timed poll before a delayed offer fails; after offer succeeds;
303	<	* on interruption throws
302	>	* timed poll after thread interrupted throws InterruptedException
303	>	* instead of returning timeout status
304		*/
305	<	public void testTimedPollWithOffer() throws InterruptedException {
306	<	final LinkedTransferQueue q = new LinkedTransferQueue();
307	<	Thread t = new Thread(new Runnable() {
308	<	public void run() {
309	<	try {
310	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
311	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
312	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
313	<	threadShouldThrow();
357	<	} catch (InterruptedException success) {
358	<	} catch (Throwable ex) {
359	<	threadUnexpectedException(ex);
305	>	public void testTimedPollAfterInterrupt() throws InterruptedException {
306	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
307	>	Thread t = newStartedThread(new CheckedRunnable() {
308	>	public void realRun() throws InterruptedException {
309	>	Thread.currentThread().interrupt();
310	>	for (int i = 0; i < SIZE; ++i) {
311	>	long t0 = System.nanoTime();
312	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
313	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
314		}
315	+	try {
316	+	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
317	+	shouldThrow();
318	+	} catch (InterruptedException success) {}
319		}});
320	<	t.start();
321	<	Thread.sleep(SMALL_DELAY_MS);
322	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
365	<	t.interrupt();
366	<	t.join();
320	>
321	>	awaitTermination(t, MEDIUM_DELAY_MS);
322	>	checkEmpty(q);
323		}
324
325		/**
326		* peek returns next element, or null if empty
327		*/
328	<	public void testPeek() {
328	>	public void testPeek() throws InterruptedException {
329		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
330		for (int i = 0; i < SIZE; ++i) {
331		assertEquals(i, (int) q.peek());
#	Line 378 | Line 334 | public class LinkedTransferQueueTest ext
334		i != (int) q.peek());
335		}
336		assertNull(q.peek());
337	+	checkEmpty(q);
338		}
339
340		/**
341		* element returns next element, or throws NoSuchElementException if empty
342		*/
343	<	public void testElement() {
343	>	public void testElement() throws InterruptedException {
344		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
345		for (int i = 0; i < SIZE; ++i) {
346		assertEquals(i, (int) q.element());
#	Line 392 | Line 349 | public class LinkedTransferQueueTest ext
349		try {
350		q.element();
351		shouldThrow();
352	<	} catch (NoSuchElementException success) {
353	<	}
352	>	} catch (NoSuchElementException success) {}
353	>	checkEmpty(q);
354		}
355
356		/**
357		* remove removes next element, or throws NoSuchElementException if empty
358		*/
359	<	public void testRemove() {
359	>	public void testRemove() throws InterruptedException {
360		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
361		for (int i = 0; i < SIZE; ++i) {
362		assertEquals(i, (int) q.remove());
#	Line 407 | Line 364 | public class LinkedTransferQueueTest ext
364		try {
365		q.remove();
366		shouldThrow();
367	<	} catch (NoSuchElementException success) {
368	<	}
412	<	}
413	<
414	<	/**
415	<	* remove(x) removes x and returns true if present
416	<	*/
417	<	public void testRemoveElement() {
418	<	LinkedTransferQueue q = populatedQueue(SIZE);
419	<	for (int i = 1; i < SIZE; i += 2) {
420	<	assertTrue(q.remove(i));
421	<	}
422	<	for (int i = 0; i < SIZE; i += 2) {
423	<	assertTrue(q.remove(i));
424	<	assertFalse(q.remove(i + 1));
425	<	}
426	<	assertTrue(q.isEmpty());
367	>	} catch (NoSuchElementException success) {}
368	>	checkEmpty(q);
369		}
370
371		/**
#	Line 436 | Line 378 | public class LinkedTransferQueueTest ext
378		assertTrue(q.remove(one));
379		assertTrue(q.remove(two));
380		assertTrue(q.add(three));
381	<	assertTrue(q.take() != null);
381	>	assertSame(q.take(), three);
382		}
383
384		/**
#	Line 454 | Line 396 | public class LinkedTransferQueueTest ext
396		/**
397		* clear removes all elements
398		*/
399	<	public void testClear() {
399	>	public void testClear() throws InterruptedException {
400		LinkedTransferQueue q = populatedQueue(SIZE);
401		q.clear();
402	<	assertTrue(q.isEmpty());
461	<	assertEquals(0, q.size());
402	>	checkEmpty(q);
403		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
404		q.add(one);
405		assertFalse(q.isEmpty());
406	+	assertEquals(1, q.size());
407		assertTrue(q.contains(one));
408		q.clear();
409	<	assertTrue(q.isEmpty());
409	>	checkEmpty(q);
410		}
411
412		/**
#	Line 482 | Line 424 | public class LinkedTransferQueueTest ext
424		}
425
426		/**
427	<	* retainAll(c) retains only those elements of c and reports true if changed
427	>	* retainAll(c) retains only those elements of c and reports true
428	>	* if changed
429		*/
430		public void testRetainAll() {
431		LinkedTransferQueue q = populatedQueue(SIZE);
#	Line 501 | Line 444 | public class LinkedTransferQueueTest ext
444		}
445
446		/**
447	<	* removeAll(c) removes only those elements of c and reports true if changed
447	>	* removeAll(c) removes only those elements of c and reports true
448	>	* if changed
449		*/
450		public void testRemoveAll() {
451		for (int i = 1; i < SIZE; ++i) {
#	Line 516 | Line 460 | public class LinkedTransferQueueTest ext
460		}
461
462		/**
463	<	* toArray contains all elements
463	>	* toArray() contains all elements in FIFO order
464		*/
465	<	public void testToArray() throws InterruptedException {
465	>	public void testToArray() {
466		LinkedTransferQueue q = populatedQueue(SIZE);
467		Object[] o = q.toArray();
468		for (int i = 0; i < o.length; i++) {
469	<	assertEquals(o[i], q.take());
469	>	assertSame(o[i], q.poll());
470		}
471		}
472
473		/**
474	<	* toArray(a) contains all elements
474	>	* toArray(a) contains all elements in FIFO order
475		*/
476	<	public void testToArray2() throws InterruptedException {
476	>	public void testToArray2() {
477		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
478		Integer[] ints = new Integer[SIZE];
479	<	ints = q.toArray(ints);
479	>	Integer[] array = q.toArray(ints);
480	>	assertSame(ints, array);
481		for (int i = 0; i < ints.length; i++) {
482	<	assertEquals(ints[i], q.take());
482	>	assertSame(ints[i], q.poll());
483		}
484		}
485
486		/**
487	<	* toArray(null) throws NullPointerException
543	<	*/
544	<	public void testToArray_BadArg() {
545	<	try {
546	<	LinkedTransferQueue q = populatedQueue(SIZE);
547	<	Object o[] = q.toArray(null);
548	<	shouldThrow();
549	<	} catch (NullPointerException success) {
550	<	}
551	<	}
552	<
553	<	/**
554	<	* toArray with incompatible array type throws CCE
487	>	* toArray(incompatible array type) throws ArrayStoreException
488		*/
489		public void testToArray1_BadArg() {
490	+	LinkedTransferQueue q = populatedQueue(SIZE);
491		try {
492	<	LinkedTransferQueue q = populatedQueue(SIZE);
559	<	Object o[] = q.toArray(new String[10]);
492	>	q.toArray(new String[10]);
493		shouldThrow();
494	<	} catch (ArrayStoreException success) {
562	<	}
494	>	} catch (ArrayStoreException success) {}
495		}
496
497		/**
#	Line 568 | Line 500 | public class LinkedTransferQueueTest ext
500		public void testIterator() throws InterruptedException {
501		LinkedTransferQueue q = populatedQueue(SIZE);
502		Iterator it = q.iterator();
503	+	int i = 0;
504		while (it.hasNext()) {
505	<	assertEquals(it.next(), q.take());
505	>	assertEquals(it.next(), i++);
506		}
507	+	assertEquals(i, SIZE);
508		}
509
510		/**
511	<	* iterator.remove removes current element
511	>	* iterator.remove() removes current element
512		*/
513		public void testIteratorRemove() {
514		final LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 587 | Line 521 | public class LinkedTransferQueueTest ext
521		it.remove();
522
523		it = q.iterator();
524	<	assertEquals(it.next(), one);
525	<	assertEquals(it.next(), three);
524	>	assertSame(it.next(), one);
525	>	assertSame(it.next(), three);
526		assertFalse(it.hasNext());
527		}
528
#	Line 596 | Line 530 | public class LinkedTransferQueueTest ext
530		* iterator ordering is FIFO
531		*/
532		public void testIteratorOrdering() {
533	<	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
533	>	final LinkedTransferQueue<Integer> q
534	>	= new LinkedTransferQueue<Integer>();
535		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
536		q.add(one);
537		q.add(two);
#	Line 631 | Line 566 | public class LinkedTransferQueueTest ext
566		LinkedTransferQueue q = populatedQueue(SIZE);
567		String s = q.toString();
568		for (int i = 0; i < SIZE; ++i) {
569	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
569	>	assertTrue(s.contains(String.valueOf(i)));
570		}
571		}
572
#	Line 640 | Line 575 | public class LinkedTransferQueueTest ext
575		*/
576		public void testOfferInExecutor() {
577		final LinkedTransferQueue q = new LinkedTransferQueue();
578	<	q.add(one);
644	<	q.add(two);
578	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
579		ExecutorService executor = Executors.newFixedThreadPool(2);
580	<	executor.execute(new Runnable() {
581	<	public void run() {
582	<	try {
583	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
584	<	} catch (Throwable ex) {
651	<	threadUnexpectedException(ex);
652	<	}
580	>
581	>	executor.execute(new CheckedRunnable() {
582	>	public void realRun() throws InterruptedException {
583	>	threadsStarted.await();
584	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
585		}});
586
587	<	executor.execute(new Runnable() {
588	<	public void run() {
589	<	try {
590	<	Thread.sleep(SMALL_DELAY_MS);
591	<	threadAssertEquals(one, q.take());
660	<	} catch (Throwable ex) {
661	<	threadUnexpectedException(ex);
662	<	}
587	>	executor.execute(new CheckedRunnable() {
588	>	public void realRun() throws InterruptedException {
589	>	threadsStarted.await();
590	>	assertSame(one, q.take());
591	>	checkEmpty(q);
592		}});
593
594		joinPool(executor);
595		}
596
597		/**
598	<	* poll retrieves elements across Executor threads
598	>	* timed poll retrieves elements across Executor threads
599		*/
600		public void testPollInExecutor() {
601		final LinkedTransferQueue q = new LinkedTransferQueue();
602	+	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
603		ExecutorService executor = Executors.newFixedThreadPool(2);
604	<	executor.execute(new Runnable() {
605	<	public void run() {
606	<	try {
607	<	threadAssertNull(q.poll());
608	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
609	<	threadAssertTrue(q.isEmpty());
610	<	} catch (Throwable  ex) {
681	<	threadUnexpectedException(ex);
682	<	}
604	>
605	>	executor.execute(new CheckedRunnable() {
606	>	public void realRun() throws InterruptedException {
607	>	assertNull(q.poll());
608	>	threadsStarted.await();
609	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
610	>	checkEmpty(q);
611		}});
612
613	<	executor.execute(new Runnable() {
614	<	public void run() {
615	<	try {
616	<	Thread.sleep(SMALL_DELAY_MS);
689	<	q.put(one);
690	<	} catch (Throwable ex) {
691	<	threadUnexpectedException(ex);
692	<	}
613	>	executor.execute(new CheckedRunnable() {
614	>	public void realRun() throws InterruptedException {
615	>	threadsStarted.await();
616	>	q.put(one);
617		}});
618
619		joinPool(executor);
#	Line 699 | Line 623 | public class LinkedTransferQueueTest ext
623		* A deserialized serialized queue has same elements in same order
624		*/
625		public void testSerialization() throws Exception {
626	<	LinkedTransferQueue q = populatedQueue(SIZE);
627	<
704	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
705	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
706	<	out.writeObject(q);
707	<	out.close();
708	<
709	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
710	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
711	<	LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
712	<
713	<	assertEquals(q.size(), r.size());
714	<	while (!q.isEmpty()) {
715	<	assertEquals(q.remove(), r.remove());
716	<	}
717	<	}
718	<
719	<	/**
720	<	* drainTo(null) throws NullPointerException
721	<	*/
722	<	public void testDrainToNull() {
723	<	LinkedTransferQueue q = populatedQueue(SIZE);
724	<	try {
725	<	q.drainTo(null);
726	<	shouldThrow();
727	<	} catch (NullPointerException success) {
728	<	}
729	<	}
626	>	Queue x = populatedQueue(SIZE);
627	>	Queue y = serialClone(x);
628
629	<	/**
630	<	* drainTo(this) throws IllegalArgumentException
631	<	*/
632	<	public void testDrainToSelf() {
633	<	LinkedTransferQueue q = populatedQueue(SIZE);
634	<	try {
635	<	q.drainTo(q);
738	<	shouldThrow();
739	<	} catch (IllegalArgumentException success) {
629	>	assertNotSame(y, x);
630	>	assertEquals(x.size(), y.size());
631	>	assertEquals(x.toString(), y.toString());
632	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
633	>	while (!x.isEmpty()) {
634	>	assertFalse(y.isEmpty());
635	>	assertEquals(x.remove(), y.remove());
636		}
637	+	assertTrue(y.isEmpty());
638		}
639
640		/**
#	Line 747 | Line 644 | public class LinkedTransferQueueTest ext
644		LinkedTransferQueue q = populatedQueue(SIZE);
645		ArrayList l = new ArrayList();
646		q.drainTo(l);
647	<	assertEquals(q.size(), 0);
648	<	assertEquals(l.size(), SIZE);
647	>	assertEquals(0, q.size());
648	>	assertEquals(SIZE, l.size());
649		for (int i = 0; i < SIZE; ++i) {
650	<	assertEquals(l.get(i), i);
650	>	assertEquals(i, l.get(i));
651		}
652		q.add(zero);
653		q.add(one);
#	Line 759 | Line 656 | public class LinkedTransferQueueTest ext
656		assertTrue(q.contains(one));
657		l.clear();
658		q.drainTo(l);
659	<	assertEquals(q.size(), 0);
660	<	assertEquals(l.size(), 2);
659	>	assertEquals(0, q.size());
660	>	assertEquals(2, l.size());
661		for (int i = 0; i < 2; ++i) {
662	<	assertEquals(l.get(i), i);
662	>	assertEquals(i, l.get(i));
663		}
664		}
665
666		/**
667	<	* drainTo empties full queue, unblocking a waiting put.
667	>	* drainTo(c) empties full queue, unblocking a waiting put.
668		*/
669		public void testDrainToWithActivePut() throws InterruptedException {
670		final LinkedTransferQueue q = populatedQueue(SIZE);
671	<	Thread t = new Thread(new Runnable() {
672	<	public void run() {
673	<	try {
777	<	q.put(SIZE + 1);
778	<	} catch (Throwable ex) {
779	<	threadUnexpectedException(ex);
780	<	}
671	>	Thread t = newStartedThread(new CheckedRunnable() {
672	>	public void realRun() {
673	>	q.put(SIZE + 1);
674		}});
782	–	t.start();
675		ArrayList l = new ArrayList();
676		q.drainTo(l);
677		assertTrue(l.size() >= SIZE);
678	<	for (int i = 0; i < SIZE; ++i) {
679	<	assertEquals(l.get(i), i);
680	<	}
789	<	t.join();
678	>	for (int i = 0; i < SIZE; ++i)
679	>	assertEquals(i, l.get(i));
680	>	awaitTermination(t, MEDIUM_DELAY_MS);
681		assertTrue(q.size() + l.size() >= SIZE);
682		}
683
684		/**
685	<	* drainTo(null, n) throws NullPointerException
795	<	*/
796	<	public void testDrainToNullN() {
797	<	LinkedTransferQueue q = populatedQueue(SIZE);
798	<	try {
799	<	q.drainTo(null, 0);
800	<	shouldThrow();
801	<	} catch (NullPointerException success) {
802	<	}
803	<	}
804	<
805	<	/**
806	<	* drainTo(this, n) throws IllegalArgumentException
807	<	*/
808	<	public void testDrainToSelfN() {
809	<	LinkedTransferQueue q = populatedQueue(SIZE);
810	<	try {
811	<	q.drainTo(q, 0);
812	<	shouldThrow();
813	<	} catch (IllegalArgumentException success) {
814	<	}
815	<	}
816	<
817	<	/**
818	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
685	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
686		*/
687		public void testDrainToN() {
688		LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 826 | Line 693 | public class LinkedTransferQueueTest ext
693		ArrayList l = new ArrayList();
694		q.drainTo(l, i);
695		int k = (i < SIZE) ? i : SIZE;
696	<	assertEquals(l.size(), k);
697	<	assertEquals(q.size(), SIZE - k);
698	<	for (int j = 0; j < k; ++j) {
699	<	assertEquals(l.get(j), j);
833	<	}
696	>	assertEquals(k, l.size());
697	>	assertEquals(SIZE - k, q.size());
698	>	for (int j = 0; j < k; ++j)
699	>	assertEquals(j, l.get(j));
700		while (q.poll() != null)
701		;
702		}
703		}
704
705		/**
706	<	* poll and take should decrement the waiting consumer count
706	>	* timed poll() or take() increments the waiting consumer count;
707	>	* offer(e) decrements the waiting consumer count
708		*/
709		public void testWaitingConsumer() throws InterruptedException {
710		final LinkedTransferQueue q = new LinkedTransferQueue();
711	<	final ConsumerObserver waiting = new ConsumerObserver();
712	<	new Thread(new Runnable() {
713	<	public void run() {
714	<	try {
715	<	threadAssertTrue(q.hasWaitingConsumer());
716	<	waiting.setWaitingConsumer(q.getWaitingConsumerCount());
717	<	threadAssertTrue(q.offer(new Object()));
718	<	} catch (Throwable ex) {
719	<	threadUnexpectedException(ex);
720	<	}
721	<	}}).start();
722	<	assertTrue(q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS) != null);
723	<	assertTrue(q.getWaitingConsumerCount() < waiting.getWaitingConsumers());
711	>	assertEquals(0, q.getWaitingConsumerCount());
712	>	assertFalse(q.hasWaitingConsumer());
713	>	final CountDownLatch threadStarted = new CountDownLatch(1);
714	>
715	>	Thread t = newStartedThread(new CheckedRunnable() {
716	>	public void realRun() throws InterruptedException {
717	>	threadStarted.countDown();
718	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
719	>	assertEquals(0, q.getWaitingConsumerCount());
720	>	assertFalse(q.hasWaitingConsumer());
721	>	}});
722	>
723	>	threadStarted.await();
724	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
725	>	assertEquals(1, q.getWaitingConsumerCount());
726	>	assertTrue(q.hasWaitingConsumer());
727	>
728	>	assertTrue(q.offer(one));
729	>	assertEquals(0, q.getWaitingConsumerCount());
730	>	assertFalse(q.hasWaitingConsumer());
731	>
732	>	awaitTermination(t, MEDIUM_DELAY_MS);
733		}
734
735		/**
#	Line 864 | Line 740 | public class LinkedTransferQueueTest ext
740		LinkedTransferQueue q = new LinkedTransferQueue();
741		q.transfer(null);
742		shouldThrow();
743	<	} catch (NullPointerException ex) {
868	<	}
743	>	} catch (NullPointerException success) {}
744		}
745
746		/**
747	<	* transfer attempts to insert into the queue then wait until that
748	<	* object is removed via take or poll.
747	>	* transfer waits until a poll occurs. The transfered element
748	>	* is returned by this associated poll.
749		*/
750		public void testTransfer2() throws InterruptedException {
751	<	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
752	<
753	<	new Thread(new Runnable() {
754	<	public void run() {
755	<	try {
756	<	q.transfer(SIZE);
757	<	threadAssertTrue(q.isEmpty());
758	<	} catch (Throwable ex) {
759	<	threadUnexpectedException(ex);
760	<	}
886	<	}}).start();
751	>	final LinkedTransferQueue<Integer> q
752	>	= new LinkedTransferQueue<Integer>();
753	>	final CountDownLatch threadStarted = new CountDownLatch(1);
754	>
755	>	Thread t = newStartedThread(new CheckedRunnable() {
756	>	public void realRun() throws InterruptedException {
757	>	threadStarted.countDown();
758	>	q.transfer(five);
759	>	checkEmpty(q);
760	>	}});
761
762	<	Thread.sleep(SHORT_DELAY_MS);
762	>	threadStarted.await();
763	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
764		assertEquals(1, q.size());
765	<	assertEquals(SIZE, (int) q.poll());
766	<	assertTrue(q.isEmpty());
765	>	assertSame(five, q.poll());
766	>	checkEmpty(q);
767	>	awaitTermination(t, MEDIUM_DELAY_MS);
768		}
769
770		/**
771	<	* transfer will attempt to transfer in fifo order and continue
896	<	* waiting if the element being transfered is not polled or taken
771	>	* transfer waits until a poll occurs, and then transfers in fifo order
772		*/
773		public void testTransfer3() throws InterruptedException {
774	<	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
774	>	final LinkedTransferQueue<Integer> q
775	>	= new LinkedTransferQueue<Integer>();
776
777	<	Thread first =
778	<	new Thread(new Runnable() {
779	<	public void run() {
780	<	try {
781	<	Integer i = SIZE + 1;
782	<	q.transfer(i);
907	<	threadAssertTrue(!q.contains(i));
908	<	threadAssertEquals(1, q.size());
909	<	} catch (Throwable ex) {
910	<	threadUnexpectedException(ex);
911	<	}
912	<	}});
913	<	first.start();
777	>	Thread first = newStartedThread(new CheckedRunnable() {
778	>	public void realRun() throws InterruptedException {
779	>	q.transfer(four);
780	>	assertTrue(!q.contains(four));
781	>	assertEquals(1, q.size());
782	>	}});
783
784	<	Thread interruptedThread =
785	<	new Thread(new Runnable() {
786	<	public void run() {
787	<	try {
788	<	while (q.size() == 0)
789	<	Thread.yield();
921	<	q.transfer(SIZE);
922	<	threadShouldThrow();
923	<	} catch (InterruptedException success) {
924	<	} catch (Throwable ex) {
925	<	threadUnexpectedException(ex);
926	<	}
784	>	Thread interruptedThread = newStartedThread(
785	>	new CheckedInterruptedRunnable() {
786	>	public void realRun() throws InterruptedException {
787	>	while (q.isEmpty())
788	>	Thread.yield();
789	>	q.transfer(five);
790		}});
928	–	interruptedThread.start();
791
792		while (q.size() < 2)
793		Thread.yield();
794		assertEquals(2, q.size());
795	<	assertEquals(SIZE + 1, (int) q.poll());
795	>	assertSame(four, q.poll());
796		first.join();
797		assertEquals(1, q.size());
798		interruptedThread.interrupt();
799		interruptedThread.join();
800	<	assertEquals(0, q.size());
939	<	assertTrue(q.isEmpty());
800	>	checkEmpty(q);
801		}
802
803		/**
804	<	* transfer will wait as long as a poll or take occurs if one does occur
805	<	* the waiting is finished and the thread that tries to poll/take
945	<	* wins in retrieving the element
804	>	* transfer waits until a poll occurs, at which point the polling
805	>	* thread returns the element
806		*/
807		public void testTransfer4() throws InterruptedException {
808		final LinkedTransferQueue q = new LinkedTransferQueue();
809	<	new Thread(new Runnable() {
810	<	public void run() {
811	<	try {
812	<	q.transfer(four);
813	<	threadAssertFalse(q.contains(four));
814	<	threadAssertEquals(three, q.poll());
815	<	} catch (Throwable ex) {
816	<	threadUnexpectedException(ex);
817	<	}
818	<	}}).start();
819	<	Thread.sleep(MEDIUM_DELAY_MS);
809	>
810	>	Thread t = newStartedThread(new CheckedRunnable() {
811	>	public void realRun() throws InterruptedException {
812	>	q.transfer(four);
813	>	assertFalse(q.contains(four));
814	>	assertSame(three, q.poll());
815	>	}});
816	>
817	>	while (q.isEmpty())
818	>	Thread.yield();
819	>	assertFalse(q.isEmpty());
820	>	assertEquals(1, q.size());
821		assertTrue(q.offer(three));
822	<	assertEquals(four, q.poll());
822	>	assertSame(four, q.poll());
823	>	awaitTermination(t, MEDIUM_DELAY_MS);
824	>	}
825	>
826	>	/**
827	>	* transfer waits until a take occurs. The transfered element
828	>	* is returned by this associated take.
829	>	*/
830	>	public void testTransfer5() throws InterruptedException {
831	>	final LinkedTransferQueue<Integer> q
832	>	= new LinkedTransferQueue<Integer>();
833	>
834	>	Thread t = newStartedThread(new CheckedRunnable() {
835	>	public void realRun() throws InterruptedException {
836	>	q.transfer(four);
837	>	checkEmpty(q);
838	>	}});
839	>
840	>	while (q.isEmpty())
841	>	Thread.yield();
842	>	assertFalse(q.isEmpty());
843	>	assertEquals(1, q.size());
844	>	assertSame(four, q.take());
845	>	checkEmpty(q);
846	>	awaitTermination(t, MEDIUM_DELAY_MS);
847		}
848
849		/**
#	Line 968 | Line 853 | public class LinkedTransferQueueTest ext
853		try {
854		final LinkedTransferQueue q = new LinkedTransferQueue();
855		q.tryTransfer(null);
856	<	this.shouldThrow();
857	<	} catch (NullPointerException ex) {
973	<	}
856	>	shouldThrow();
857	>	} catch (NullPointerException success) {}
858		}
859
860		/**
861		* tryTransfer returns false and does not enqueue if there are no
862		* consumers waiting to poll or take.
863		*/
864	<	public void testTryTransfer2() {
864	>	public void testTryTransfer2() throws InterruptedException {
865		final LinkedTransferQueue q = new LinkedTransferQueue();
866		assertFalse(q.tryTransfer(new Object()));
867		assertFalse(q.hasWaitingConsumer());
868	<	assertTrue(q.isEmpty());
985	<	assertEquals(0, q.size());
868	>	checkEmpty(q);
869		}
870
871		/**
#	Line 992 | Line 875 | public class LinkedTransferQueueTest ext
875		public void testTryTransfer3() throws InterruptedException {
876		final Object hotPotato = new Object();
877		final LinkedTransferQueue q = new LinkedTransferQueue();
878	<	new Thread(new Runnable() {
879	<	public void run() {
880	<	try {
881	<	while (! q.hasWaitingConsumer())
882	<	Thread.yield();
883	<	threadAssertTrue(q.hasWaitingConsumer());
884	<	threadAssertTrue(q.isEmpty());
885	<	threadAssertTrue(q.size() == 0);
886	<	threadAssertTrue(q.tryTransfer(hotPotato));
887	<	} catch (Throwable ex) {
888	<	threadUnexpectedException(ex);
889	<	}
890	<	}}).start();
1008	<	assertTrue(q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS) == hotPotato);
1009	<	assertTrue(q.isEmpty());
878	>
879	>	Thread t = newStartedThread(new CheckedRunnable() {
880	>	public void realRun() {
881	>	while (! q.hasWaitingConsumer())
882	>	Thread.yield();
883	>	assertTrue(q.hasWaitingConsumer());
884	>	checkEmpty(q);
885	>	assertTrue(q.tryTransfer(hotPotato));
886	>	}});
887	>
888	>	assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
889	>	checkEmpty(q);
890	>	awaitTermination(t, MEDIUM_DELAY_MS);
891		}
892
893		/**
#	Line 1016 | Line 897 | public class LinkedTransferQueueTest ext
897		public void testTryTransfer4() throws InterruptedException {
898		final Object hotPotato = new Object();
899		final LinkedTransferQueue q = new LinkedTransferQueue();
900	<	new Thread(new Runnable() {
901	<	public void run() {
902	<	try {
903	<	while (! q.hasWaitingConsumer())
904	<	Thread.yield();
905	<	threadAssertTrue(q.hasWaitingConsumer());
906	<	threadAssertTrue(q.isEmpty());
907	<	threadAssertTrue(q.size() == 0);
908	<	threadAssertTrue(q.tryTransfer(hotPotato));
909	<	} catch (Throwable ex) {
910	<	threadUnexpectedException(ex);
911	<	}
912	<	}}).start();
1032	<	assertTrue(q.take() == hotPotato);
1033	<	assertTrue(q.isEmpty());
900	>
901	>	Thread t = newStartedThread(new CheckedRunnable() {
902	>	public void realRun() {
903	>	while (! q.hasWaitingConsumer())
904	>	Thread.yield();
905	>	assertTrue(q.hasWaitingConsumer());
906	>	checkEmpty(q);
907	>	assertTrue(q.tryTransfer(hotPotato));
908	>	}});
909	>
910	>	assertSame(q.take(), hotPotato);
911	>	checkEmpty(q);
912	>	awaitTermination(t, MEDIUM_DELAY_MS);
913		}
914
915		/**
916	<	* tryTransfer waits the amount given if interrupted, show an
1038	<	* interrupted exception
916	>	* tryTransfer blocks interruptibly if no takers
917		*/
918		public void testTryTransfer5() throws InterruptedException {
919		final LinkedTransferQueue q = new LinkedTransferQueue();
920	<	Thread toInterrupt = new Thread(new Runnable() {
921	<	public void run() {
920	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
921	>	assertTrue(q.isEmpty());
922	>
923	>	Thread t = newStartedThread(new CheckedRunnable() {
924	>	public void realRun() throws InterruptedException {
925	>	Thread.currentThread().interrupt();
926		try {
927	<	q.tryTransfer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS);
928	<	threadShouldThrow();
929	<	} catch (InterruptedException success) {
930	<	} catch (Throwable ex) {
931	<	threadUnexpectedException(ex);
932	<	}
927	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
928	>	shouldThrow();
929	>	} catch (InterruptedException success) {}
930	>	assertFalse(Thread.interrupted());
931	>
932	>	pleaseInterrupt.countDown();
933	>	try {
934	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
935	>	shouldThrow();
936	>	} catch (InterruptedException success) {}
937	>	assertFalse(Thread.interrupted());
938		}});
939	<	toInterrupt.start();
940	<	Thread.sleep(SMALL_DELAY_MS);
941	<	toInterrupt.interrupt();
939	>
940	>	await(pleaseInterrupt);
941	>	assertThreadStaysAlive(t);
942	>	t.interrupt();
943	>	awaitTermination(t);
944	>	checkEmpty(q);
945		}
946
947		/**
948	<	* tryTransfer gives up after the timeout and return false
948	>	* tryTransfer gives up after the timeout and returns false
949		*/
950		public void testTryTransfer6() throws InterruptedException {
951		final LinkedTransferQueue q = new LinkedTransferQueue();
952	<	new Thread(new Runnable() {
953	<	public void run() {
954	<	try {
955	<	threadAssertFalse(q.tryTransfer(new Object(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
956	<	} catch (Throwable ex) {
957	<	threadUnexpectedException(ex);
958	<	}
959	<	}}).start();
960	<	Thread.sleep(LONG_DELAY_MS);
961	<	assertTrue(q.isEmpty());
952	>
953	>	Thread t = newStartedThread(new CheckedRunnable() {
954	>	public void realRun() throws InterruptedException {
955	>	long t0 = System.nanoTime();
956	>	assertFalse(q.tryTransfer(new Object(),
957	>	timeoutMillis(), MILLISECONDS));
958	>	assertTrue(millisElapsedSince(t0) >= timeoutMillis());
959	>	checkEmpty(q);
960	>	}});
961	>
962	>	awaitTermination(t);
963	>	checkEmpty(q);
964		}
965
966		/**
#	Line 1078 | Line 970 | public class LinkedTransferQueueTest ext
970		public void testTryTransfer7() throws InterruptedException {
971		final LinkedTransferQueue q = new LinkedTransferQueue();
972		assertTrue(q.offer(four));
973	<	new Thread(new Runnable() {
974	<	public void run() {
975	<	try {
976	<	threadAssertTrue(q.tryTransfer(five, LONG_DELAY_MS, TimeUnit.MILLISECONDS));
977	<	threadAssertTrue(q.isEmpty());
978	<	} catch (Throwable ex) {
979	<	threadUnexpectedException(ex);
980	<	}
981	<	}}).start();
1090	<	Thread.sleep(SHORT_DELAY_MS);
973	>
974	>	Thread t = newStartedThread(new CheckedRunnable() {
975	>	public void realRun() throws InterruptedException {
976	>	assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
977	>	checkEmpty(q);
978	>	}});
979	>
980	>	while (q.size() != 2)
981	>	Thread.yield();
982		assertEquals(2, q.size());
983	<	assertEquals(four, q.poll());
984	<	assertEquals(five, q.poll());
985	<	assertTrue(q.isEmpty());
983	>	assertSame(four, q.poll());
984	>	assertSame(five, q.poll());
985	>	checkEmpty(q);
986	>	awaitTermination(t, MEDIUM_DELAY_MS);
987		}
988
989		/**
990	<	* tryTransfer attempts to enqueue into the q and fails returning
991	<	* false not enqueueing and the successive poll is null
990	>	* tryTransfer attempts to enqueue into the queue and fails
991	>	* returning false not enqueueing and the successive poll is null
992		*/
993		public void testTryTransfer8() throws InterruptedException {
994		final LinkedTransferQueue q = new LinkedTransferQueue();
995		assertTrue(q.offer(four));
996		assertEquals(1, q.size());
997	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
997	>	long t0 = System.nanoTime();
998	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
999	>	assertTrue(millisElapsedSince(t0) >= timeoutMillis());
1000		assertEquals(1, q.size());
1001	<	assertEquals(four, q.poll());
1108	<	threadAssertTrue(q.isEmpty());
1001	>	assertSame(four, q.poll());
1002		assertNull(q.poll());
1003	+	checkEmpty(q);
1004		}
1005
1006		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1007		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1008	<	assertTrue(q.isEmpty());
1008	>	checkEmpty(q);
1009		for (int i = 0; i < n; i++) {
1010		assertEquals(i, q.size());
1011		assertTrue(q.offer(i));
#	Line 1121 | Line 1015 | public class LinkedTransferQueueTest ext
1015		return q;
1016		}
1017
1018	<	private static class ConsumerObserver {
1019	<
1020	<	private int waitingConsumers;
1021	<
1022	<	private ConsumerObserver() {
1023	<	}
1024	<
1025	<	private void setWaitingConsumer(int i) {
1026	<	this.waitingConsumers = i;
1027	<	}
1028	<
1029	<	private int getWaitingConsumers() {
1136	<	return waitingConsumers;
1018	>	/**
1019	>	* remove(null), contains(null) always return false
1020	>	*/
1021	>	public void testNeverContainsNull() {
1022	>	Collection<?>[] qs = {
1023	>	new LinkedTransferQueue<Object>(),
1024	>	populatedQueue(2),
1025	>	};
1026	>
1027	>	for (Collection<?> q : qs) {
1028	>	assertFalse(q.contains(null));
1029	>	assertFalse(q.remove(null));
1030		}
1031		}
1032		}

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