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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.26 by jsr166, Tue Oct 19 00:41:14 2010 UTC vs.
Revision 1.52 by jsr166, Thu May 30 03:28:55 2013 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;
14	<	import java.util.ArrayList;
8	>	import junit.framework.*;
9		import java.util.Arrays;
10	+	import java.util.ArrayList;
11	+	import java.util.Collection;
12		import java.util.Iterator;
13		import java.util.List;
14		import java.util.NoSuchElementException;
15	<	import java.util.concurrent.*;
15	>	import java.util.Queue;
16	>	import java.util.concurrent.BlockingQueue;
17	>	import java.util.concurrent.CountDownLatch;
18	>	import java.util.concurrent.Executors;
19	>	import java.util.concurrent.ExecutorService;
20	>	import java.util.concurrent.LinkedTransferQueue;
21		import static java.util.concurrent.TimeUnit.MILLISECONDS;
22	<	import junit.framework.Test;
22	<	import junit.framework.TestSuite;
22	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
23
24		@SuppressWarnings({"unchecked", "rawtypes"})
25		public class LinkedTransferQueueTest extends JSR166TestCase {
#	Line 39 | Line 39 | public class LinkedTransferQueueTest ext
39		new Generic().testSuite());
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(), "[]");
49	–	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
50	–	assertFalse(q.iterator().hasNext());
51	–	try {
52	–	q.element();
53	–	shouldThrow();
54	–	} catch (NoSuchElementException success) {}
55	–	try {
56	–	q.iterator().next();
57	–	shouldThrow();
58	–	} catch (NoSuchElementException success) {}
59	–	try {
60	–	q.remove();
61	–	shouldThrow();
62	–	} catch (NoSuchElementException success) {}
63	–	}
64	–
42		/**
43		* Constructor builds new queue with size being zero and empty
44		* being true
#	Line 87 | Line 64 | public class LinkedTransferQueueTest ext
64		* NullPointerException
65		*/
66		public void testConstructor3() {
67	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
68		try {
69	<	Integer[] ints = new Integer[SIZE];
92	<	new LinkedTransferQueue(Arrays.asList(ints));
69	>	new LinkedTransferQueue(elements);
70		shouldThrow();
71		} catch (NullPointerException success) {}
72		}
#	Line 99 | Line 76 | public class LinkedTransferQueueTest ext
76		* throws NullPointerException
77		*/
78		public void testConstructor4() {
79	+	Integer[] ints = new Integer[SIZE];
80	+	for (int i = 0; i < SIZE-1; ++i)
81	+	ints[i] = i;
82	+	Collection<Integer> elements = Arrays.asList(ints);
83		try {
84	<	Integer[] ints = new Integer[SIZE];
104	<	for (int i = 0; i < SIZE - 1; ++i) {
105	<	ints[i] = i;
106	<	}
107	<	new LinkedTransferQueue(Arrays.asList(ints));
84	>	new LinkedTransferQueue(elements);
85		shouldThrow();
86		} catch (NullPointerException success) {}
87		}
#	Line 151 | Line 128 | public class LinkedTransferQueueTest ext
128		}
129
130		/**
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	–	* add(null) throws NullPointerException
166	–	*/
167	–	public void testAddNull() {
168	–	try {
169	–	LinkedTransferQueue q = new LinkedTransferQueue();
170	–	q.add(null);
171	–	shouldThrow();
172	–	} catch (NullPointerException success) {}
173	–	}
174	–
175	–	/**
176	–	* addAll(null) throws NullPointerException
177	–	*/
178	–	public void testAddAll1() {
179	–	try {
180	–	LinkedTransferQueue q = new LinkedTransferQueue();
181	–	q.addAll(null);
182	–	shouldThrow();
183	–	} catch (NullPointerException success) {}
184	–	}
185	–
186	–	/**
131		* addAll(this) throws IllegalArgumentException
132		*/
133		public void testAddAllSelf() {
#	Line 195 | Line 139 | public class LinkedTransferQueueTest ext
139		}
140
141		/**
198	–	* addAll of a collection with null elements throws NullPointerException
199	–	*/
200	–	public void testAddAll2() {
201	–	try {
202	–	LinkedTransferQueue q = new LinkedTransferQueue();
203	–	Integer[] ints = new Integer[SIZE];
204	–	q.addAll(Arrays.asList(ints));
205	–	shouldThrow();
206	–	} catch (NullPointerException success) {}
207	–	}
208	–
209	–	/**
142		* addAll of a collection with any null elements throws
143		* NullPointerException after possibly adding some elements
144		*/
#	Line 240 | Line 172 | public class LinkedTransferQueueTest ext
172		}
173
174		/**
243	–	* put(null) throws NullPointerException
244	–	*/
245	–	public void testPutNull() throws InterruptedException {
246	–	try {
247	–	LinkedTransferQueue q = new LinkedTransferQueue();
248	–	q.put(null);
249	–	shouldThrow();
250	–	} catch (NullPointerException success) {}
251	–	}
252	–
253	–	/**
175		* all elements successfully put are contained
176		*/
177		public void testPut() {
178		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
179		for (int i = 0; i < SIZE; ++i) {
180	<	assertEquals(q.size(), i);
180	>	assertEquals(i, q.size());
181		q.put(i);
182		assertTrue(q.contains(i));
183		}
#	Line 273 | Line 194 | public class LinkedTransferQueueTest ext
194		}
195
196		/**
197	<	* take blocks interruptibly when empty
277	<	*/
278	<	public void testTakeFromEmpty() throws InterruptedException {
279	<	final LinkedTransferQueue q = new LinkedTransferQueue();
280	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
281	<	public void realRun() throws InterruptedException {
282	<	q.take();
283	<	}});
284	<	Thread.sleep(SHORT_DELAY_MS);
285	<	t.interrupt();
286	<	t.join();
287	<	}
288	<
289	<	/**
290	<	* Take removes existing elements until empty, then blocks interruptibly
197	>	* take removes existing elements until empty, then blocks interruptibly
198		*/
199		public void testBlockingTake() throws InterruptedException {
200	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
201	<	Thread t = new Thread(new CheckedRunnable() {
200	>	final BlockingQueue q = populatedQueue(SIZE);
201	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
202	>	Thread t = newStartedThread(new CheckedRunnable() {
203		public void realRun() throws InterruptedException {
204		for (int i = 0; i < SIZE; ++i) {
205	<	assertEquals(i, (int) q.take());
205	>	assertEquals(i, q.take());
206		}
207	+
208	+	Thread.currentThread().interrupt();
209		try {
210		q.take();
211		shouldThrow();
212		} catch (InterruptedException success) {}
213	+	assertFalse(Thread.interrupted());
214	+
215	+	pleaseInterrupt.countDown();
216	+	try {
217	+	q.take();
218	+	shouldThrow();
219	+	} catch (InterruptedException success) {}
220	+	assertFalse(Thread.interrupted());
221		}});
222
223	<	t.start();
224	<	Thread.sleep(SHORT_DELAY_MS);
223	>	await(pleaseInterrupt);
224	>	assertThreadStaysAlive(t);
225		t.interrupt();
226	<	t.join();
309	<	checkEmpty(q);
226	>	awaitTermination(t);
227		}
228
229		/**
#	Line 322 | Line 239 | public class LinkedTransferQueueTest ext
239		}
240
241		/**
242	<	* timed pool with zero timeout succeeds when non-empty, else times out
242	>	* timed poll with zero timeout succeeds when non-empty, else times out
243		*/
244		public void testTimedPoll0() throws InterruptedException {
245		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
#	Line 334 | Line 251 | public class LinkedTransferQueueTest ext
251		}
252
253		/**
254	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
254	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
255		*/
256		public void testTimedPoll() throws InterruptedException {
257		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
258		for (int i = 0; i < SIZE; ++i) {
259	<	long t0 = System.nanoTime();
259	>	long startTime = System.nanoTime();
260		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
261	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
345	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
261	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
262		}
263	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
263	>	long startTime = System.nanoTime();
264	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
265	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
266		checkEmpty(q);
267		}
268
#	Line 353 | Line 271 | public class LinkedTransferQueueTest ext
271		* returning timeout status
272		*/
273		public void testInterruptedTimedPoll() throws InterruptedException {
274	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
274	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
275	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
276		Thread t = newStartedThread(new CheckedRunnable() {
277		public void realRun() throws InterruptedException {
278		for (int i = 0; i < SIZE; ++i) {
279		long t0 = System.nanoTime();
280		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
281	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
363	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
281	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
282		}
283	+	long t0 = System.nanoTime();
284	+	aboutToWait.countDown();
285		try {
286	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
286	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
287		shouldThrow();
288	<	} catch (InterruptedException success) {}
288	>	} catch (InterruptedException success) {
289	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
290	>	}
291		}});
292
293	<	Thread.sleep(SMALL_DELAY_MS);
293	>	aboutToWait.await();
294	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
295		t.interrupt();
296	<	t.join();
296	>	awaitTermination(t, MEDIUM_DELAY_MS);
297	>	checkEmpty(q);
298	>	}
299	>
300	>	/**
301	>	* timed poll after thread interrupted throws InterruptedException
302	>	* instead of returning timeout status
303	>	*/
304	>	public void testTimedPollAfterInterrupt() throws InterruptedException {
305	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
306	>	Thread t = newStartedThread(new CheckedRunnable() {
307	>	public void realRun() throws InterruptedException {
308	>	Thread.currentThread().interrupt();
309	>	for (int i = 0; i < SIZE; ++i) {
310	>	long t0 = System.nanoTime();
311	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
312	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
313	>	}
314	>	try {
315	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
316	>	shouldThrow();
317	>	} catch (InterruptedException success) {}
318	>	}});
319	>
320	>	awaitTermination(t, MEDIUM_DELAY_MS);
321		checkEmpty(q);
322		}
323
#	Line 421 | Line 368 | public class LinkedTransferQueueTest ext
368		}
369
370		/**
424	–	* remove(x) removes x and returns true if present
425	–	*/
426	–	public void testRemoveElement() throws InterruptedException {
427	–	LinkedTransferQueue q = populatedQueue(SIZE);
428	–	for (int i = 1; i < SIZE; i += 2) {
429	–	assertTrue(q.remove(i));
430	–	}
431	–	for (int i = 0; i < SIZE; i += 2) {
432	–	assertTrue(q.remove(i));
433	–	assertFalse(q.remove(i + 1));
434	–	}
435	–	checkEmpty(q);
436	–	}
437	–
438	–	/**
371		* An add following remove(x) succeeds
372		*/
373		public void testRemoveElementAndAdd() throws InterruptedException {
#	Line 527 | Line 459 | public class LinkedTransferQueueTest ext
459		}
460
461		/**
462	<	* toArray() contains all elements
462	>	* toArray() contains all elements in FIFO order
463		*/
464	<	public void testToArray() throws InterruptedException {
464	>	public void testToArray() {
465		LinkedTransferQueue q = populatedQueue(SIZE);
466		Object[] o = q.toArray();
467		for (int i = 0; i < o.length; i++) {
468	<	assertEquals(o[i], q.take());
468	>	assertSame(o[i], q.poll());
469		}
470		}
471
472		/**
473	<	* toArray(a) contains all elements
473	>	* toArray(a) contains all elements in FIFO order
474		*/
475	<	public void testToArray2() throws InterruptedException {
475	>	public void testToArray2() {
476		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
477		Integer[] ints = new Integer[SIZE];
478	<	ints = q.toArray(ints);
478	>	Integer[] array = q.toArray(ints);
479	>	assertSame(ints, array);
480		for (int i = 0; i < ints.length; i++) {
481	<	assertEquals(ints[i], q.take());
481	>	assertSame(ints[i], q.poll());
482		}
483		}
484
485		/**
486	<	* toArray(null) throws NullPointerException
554	<	*/
555	<	public void testToArray_BadArg() {
556	<	LinkedTransferQueue q = populatedQueue(SIZE);
557	<	try {
558	<	Object o[] = q.toArray(null);
559	<	shouldThrow();
560	<	} catch (NullPointerException success) {}
561	<	}
562	<
563	<	/**
564	<	* toArray(incompatible array type) throws CCE
486	>	* toArray(incompatible array type) throws ArrayStoreException
487		*/
488		public void testToArray1_BadArg() {
489		LinkedTransferQueue q = populatedQueue(SIZE);
490		try {
491	<	Object o[] = q.toArray(new String[10]);
491	>	q.toArray(new String[10]);
492		shouldThrow();
493		} catch (ArrayStoreException success) {}
494		}
#	Line 643 | Line 565 | public class LinkedTransferQueueTest ext
565		LinkedTransferQueue q = populatedQueue(SIZE);
566		String s = q.toString();
567		for (int i = 0; i < SIZE; ++i) {
568	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
568	>	assertTrue(s.contains(String.valueOf(i)));
569		}
570		}
571
#	Line 652 | Line 574 | public class LinkedTransferQueueTest ext
574		*/
575		public void testOfferInExecutor() {
576		final LinkedTransferQueue q = new LinkedTransferQueue();
577	<	q.add(one);
656	<	q.add(two);
577	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
578		ExecutorService executor = Executors.newFixedThreadPool(2);
579
580		executor.execute(new CheckedRunnable() {
581	<	public void realRun() {
582	<	assertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS));
581	>	public void realRun() throws InterruptedException {
582	>	threadsStarted.await();
583	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
584		}});
585
586		executor.execute(new CheckedRunnable() {
587		public void realRun() throws InterruptedException {
588	<	Thread.sleep(SMALL_DELAY_MS);
588	>	threadsStarted.await();
589		assertSame(one, q.take());
590	+	checkEmpty(q);
591		}});
592
593		joinPool(executor);
#	Line 675 | Line 598 | public class LinkedTransferQueueTest ext
598		*/
599		public void testPollInExecutor() {
600		final LinkedTransferQueue q = new LinkedTransferQueue();
601	+	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
602		ExecutorService executor = Executors.newFixedThreadPool(2);
603
604		executor.execute(new CheckedRunnable() {
605		public void realRun() throws InterruptedException {
606		assertNull(q.poll());
607	<	assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
608	<	assertTrue(q.isEmpty());
607	>	threadsStarted.await();
608	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
609	>	checkEmpty(q);
610		}});
611
612		executor.execute(new CheckedRunnable() {
613		public void realRun() throws InterruptedException {
614	<	Thread.sleep(SMALL_DELAY_MS);
614	>	threadsStarted.await();
615		q.put(one);
616		}});
617
#	Line 697 | Line 622 | public class LinkedTransferQueueTest ext
622		* A deserialized serialized queue has same elements in same order
623		*/
624		public void testSerialization() throws Exception {
625	<	LinkedTransferQueue q = populatedQueue(SIZE);
626	<
702	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
703	<	ObjectOutputStream out
704	<	= new ObjectOutputStream(new BufferedOutputStream(bout));
705	<	out.writeObject(q);
706	<	out.close();
625	>	Queue x = populatedQueue(SIZE);
626	>	Queue y = serialClone(x);
627
628	<	ByteArrayInputStream bin
629	<	= new ByteArrayInputStream(bout.toByteArray());
630	<	ObjectInputStream in
631	<	= new ObjectInputStream(new BufferedInputStream(bin));
632	<	LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
633	<
634	<	assertEquals(q.size(), r.size());
715	<	while (!q.isEmpty()) {
716	<	assertEquals(q.remove(), r.remove());
628	>	assertNotSame(y, x);
629	>	assertEquals(x.size(), y.size());
630	>	assertEquals(x.toString(), y.toString());
631	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
632	>	while (!x.isEmpty()) {
633	>	assertFalse(y.isEmpty());
634	>	assertEquals(x.remove(), y.remove());
635		}
636	<	}
719	<
720	<	/**
721	<	* drainTo(null) throws NullPointerException
722	<	*/
723	<	public void testDrainToNull() {
724	<	LinkedTransferQueue q = populatedQueue(SIZE);
725	<	try {
726	<	q.drainTo(null);
727	<	shouldThrow();
728	<	} catch (NullPointerException success) {}
729	<	}
730	<
731	<	/**
732	<	* drainTo(this) throws IllegalArgumentException
733	<	*/
734	<	public void testDrainToSelf() {
735	<	LinkedTransferQueue q = populatedQueue(SIZE);
736	<	try {
737	<	q.drainTo(q);
738	<	shouldThrow();
739	<	} catch (IllegalArgumentException success) {}
636	>	assertTrue(y.isEmpty());
637		}
638
639		/**
#	Line 746 | Line 643 | public class LinkedTransferQueueTest ext
643		LinkedTransferQueue q = populatedQueue(SIZE);
644		ArrayList l = new ArrayList();
645		q.drainTo(l);
646	<	assertEquals(q.size(), 0);
647	<	assertEquals(l.size(), SIZE);
646	>	assertEquals(0, q.size());
647	>	assertEquals(SIZE, l.size());
648		for (int i = 0; i < SIZE; ++i) {
649	<	assertEquals(l.get(i), i);
649	>	assertEquals(i, l.get(i));
650		}
651		q.add(zero);
652		q.add(one);
#	Line 758 | Line 655 | public class LinkedTransferQueueTest ext
655		assertTrue(q.contains(one));
656		l.clear();
657		q.drainTo(l);
658	<	assertEquals(q.size(), 0);
659	<	assertEquals(l.size(), 2);
658	>	assertEquals(0, q.size());
659	>	assertEquals(2, l.size());
660		for (int i = 0; i < 2; ++i) {
661	<	assertEquals(l.get(i), i);
661	>	assertEquals(i, l.get(i));
662		}
663		}
664
#	Line 777 | Line 674 | public class LinkedTransferQueueTest ext
674		ArrayList l = new ArrayList();
675		q.drainTo(l);
676		assertTrue(l.size() >= SIZE);
677	<	for (int i = 0; i < SIZE; ++i) {
678	<	assertEquals(l.get(i), i);
679	<	}
783	<	t.join();
677	>	for (int i = 0; i < SIZE; ++i)
678	>	assertEquals(i, l.get(i));
679	>	awaitTermination(t, MEDIUM_DELAY_MS);
680		assertTrue(q.size() + l.size() >= SIZE);
681		}
682
683		/**
788	–	* drainTo(null, n) throws NullPointerException
789	–	*/
790	–	public void testDrainToNullN() {
791	–	LinkedTransferQueue q = populatedQueue(SIZE);
792	–	try {
793	–	q.drainTo(null, SIZE);
794	–	shouldThrow();
795	–	} catch (NullPointerException success) {}
796	–	}
797	–
798	–	/**
799	–	* drainTo(this, n) throws IllegalArgumentException
800	–	*/
801	–	public void testDrainToSelfN() {
802	–	LinkedTransferQueue q = populatedQueue(SIZE);
803	–	try {
804	–	q.drainTo(q, SIZE);
805	–	shouldThrow();
806	–	} catch (IllegalArgumentException success) {}
807	–	}
808	–
809	–	/**
684		* drainTo(c, n) empties first min(n, size) elements of queue into c
685		*/
686		public void testDrainToN() {
#	Line 818 | Line 692 | public class LinkedTransferQueueTest ext
692		ArrayList l = new ArrayList();
693		q.drainTo(l, i);
694		int k = (i < SIZE) ? i : SIZE;
695	<	assertEquals(l.size(), k);
696	<	assertEquals(q.size(), SIZE - k);
697	<	for (int j = 0; j < k; ++j) {
698	<	assertEquals(l.get(j), j);
825	<	}
695	>	assertEquals(k, l.size());
696	>	assertEquals(SIZE - k, q.size());
697	>	for (int j = 0; j < k; ++j)
698	>	assertEquals(j, l.get(j));
699		while (q.poll() != null)
700		;
701		}
#	Line 834 | Line 707 | public class LinkedTransferQueueTest ext
707		*/
708		public void testWaitingConsumer() throws InterruptedException {
709		final LinkedTransferQueue q = new LinkedTransferQueue();
710	<	assertEquals(q.getWaitingConsumerCount(), 0);
710	>	assertEquals(0, q.getWaitingConsumerCount());
711		assertFalse(q.hasWaitingConsumer());
712	+	final CountDownLatch threadStarted = new CountDownLatch(1);
713
714		Thread t = newStartedThread(new CheckedRunnable() {
715		public void realRun() throws InterruptedException {
716	<	Thread.sleep(SMALL_DELAY_MS);
717	<	assertTrue(q.hasWaitingConsumer());
718	<	assertEquals(q.getWaitingConsumerCount(), 1);
845	<	assertTrue(q.offer(one));
716	>	threadStarted.countDown();
717	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
718	>	assertEquals(0, q.getWaitingConsumerCount());
719		assertFalse(q.hasWaitingConsumer());
847	–	assertEquals(q.getWaitingConsumerCount(), 0);
720		}});
721
722	<	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
723	<	assertEquals(q.getWaitingConsumerCount(), 0);
722	>	threadStarted.await();
723	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
724	>	assertEquals(1, q.getWaitingConsumerCount());
725	>	assertTrue(q.hasWaitingConsumer());
726	>
727	>	assertTrue(q.offer(one));
728	>	assertEquals(0, q.getWaitingConsumerCount());
729		assertFalse(q.hasWaitingConsumer());
730	<	t.join();
730	>
731	>	awaitTermination(t, MEDIUM_DELAY_MS);
732		}
733
734		/**
#	Line 871 | Line 749 | public class LinkedTransferQueueTest ext
749		public void testTransfer2() throws InterruptedException {
750		final LinkedTransferQueue<Integer> q
751		= new LinkedTransferQueue<Integer>();
752	+	final CountDownLatch threadStarted = new CountDownLatch(1);
753
754		Thread t = newStartedThread(new CheckedRunnable() {
755		public void realRun() throws InterruptedException {
756	<	q.transfer(SIZE);
757	<	assertTrue(q.isEmpty());
756	>	threadStarted.countDown();
757	>	q.transfer(five);
758	>	checkEmpty(q);
759		}});
760
761	<	Thread.sleep(SHORT_DELAY_MS);
761	>	threadStarted.await();
762	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
763		assertEquals(1, q.size());
764	<	assertEquals(SIZE, (int) q.poll());
765	<	assertTrue(q.isEmpty());
766	<	t.join();
764	>	assertSame(five, q.poll());
765	>	checkEmpty(q);
766	>	awaitTermination(t, MEDIUM_DELAY_MS);
767		}
768
769		/**
#	Line 894 | Line 775 | public class LinkedTransferQueueTest ext
775
776		Thread first = newStartedThread(new CheckedRunnable() {
777		public void realRun() throws InterruptedException {
778	<	Integer i = SIZE + 1;
779	<	q.transfer(i);
899	<	assertTrue(!q.contains(i));
778	>	q.transfer(four);
779	>	assertTrue(!q.contains(four));
780		assertEquals(1, q.size());
781		}});
782
783		Thread interruptedThread = newStartedThread(
784		new CheckedInterruptedRunnable() {
785		public void realRun() throws InterruptedException {
786	<	while (q.size() == 0)
786	>	while (q.isEmpty())
787		Thread.yield();
788	<	q.transfer(SIZE);
788	>	q.transfer(five);
789		}});
790
791		while (q.size() < 2)
792		Thread.yield();
793		assertEquals(2, q.size());
794	<	assertEquals(SIZE + 1, (int) q.poll());
794	>	assertSame(four, q.poll());
795		first.join();
796		assertEquals(1, q.size());
797		interruptedThread.interrupt();
798		interruptedThread.join();
799	<	assertEquals(0, q.size());
920	<	assertTrue(q.isEmpty());
799	>	checkEmpty(q);
800		}
801
802		/**
#	Line 934 | Line 813 | public class LinkedTransferQueueTest ext
813		assertSame(three, q.poll());
814		}});
815
816	<	Thread.sleep(SHORT_DELAY_MS);
816	>	while (q.isEmpty())
817	>	Thread.yield();
818	>	assertFalse(q.isEmpty());
819	>	assertEquals(1, q.size());
820		assertTrue(q.offer(three));
821		assertSame(four, q.poll());
822	<	t.join();
822	>	awaitTermination(t, MEDIUM_DELAY_MS);
823		}
824
825		/**
#	Line 950 | Line 832 | public class LinkedTransferQueueTest ext
832
833		Thread t = newStartedThread(new CheckedRunnable() {
834		public void realRun() throws InterruptedException {
835	<	q.transfer(SIZE);
835	>	q.transfer(four);
836		checkEmpty(q);
837		}});
838
839	<	Thread.sleep(SHORT_DELAY_MS);
840	<	assertEquals(SIZE, (int) q.take());
839	>	while (q.isEmpty())
840	>	Thread.yield();
841	>	assertFalse(q.isEmpty());
842	>	assertEquals(1, q.size());
843	>	assertSame(four, q.take());
844		checkEmpty(q);
845	<	t.join();
845	>	awaitTermination(t, MEDIUM_DELAY_MS);
846		}
847
848		/**
#	Line 995 | Line 880 | public class LinkedTransferQueueTest ext
880		while (! q.hasWaitingConsumer())
881		Thread.yield();
882		assertTrue(q.hasWaitingConsumer());
883	<	assertTrue(q.isEmpty());
999	<	assertEquals(q.size(), 0);
883	>	checkEmpty(q);
884		assertTrue(q.tryTransfer(hotPotato));
885		}});
886
887		assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
888		checkEmpty(q);
889	<	t.join();
889	>	awaitTermination(t, MEDIUM_DELAY_MS);
890		}
891
892		/**
#	Line 1018 | Line 902 | public class LinkedTransferQueueTest ext
902		while (! q.hasWaitingConsumer())
903		Thread.yield();
904		assertTrue(q.hasWaitingConsumer());
905	<	assertTrue(q.isEmpty());
1022	<	assertEquals(q.size(), 0);
905	>	checkEmpty(q);
906		assertTrue(q.tryTransfer(hotPotato));
907		}});
908
909		assertSame(q.take(), hotPotato);
910		checkEmpty(q);
911	<	t.join();
911	>	awaitTermination(t, MEDIUM_DELAY_MS);
912		}
913
914		/**
915	<	* tryTransfer waits the amount given if interrupted, and
1033	<	* throws interrupted exception
915	>	* tryTransfer blocks interruptibly if no takers
916		*/
917		public void testTryTransfer5() throws InterruptedException {
918		final LinkedTransferQueue q = new LinkedTransferQueue();
919	+	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
920	+	assertTrue(q.isEmpty());
921
922	<	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
922	>	Thread t = newStartedThread(new CheckedRunnable() {
923		public void realRun() throws InterruptedException {
924	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
924	>	Thread.currentThread().interrupt();
925	>	try {
926	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
927	>	shouldThrow();
928	>	} catch (InterruptedException success) {}
929	>	assertFalse(Thread.interrupted());
930	>
931	>	pleaseInterrupt.countDown();
932	>	try {
933	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
934	>	shouldThrow();
935	>	} catch (InterruptedException success) {}
936	>	assertFalse(Thread.interrupted());
937		}});
938
939	<	Thread.sleep(SMALL_DELAY_MS);
940	<	toInterrupt.interrupt();
941	<	toInterrupt.join();
939	>	await(pleaseInterrupt);
940	>	assertThreadStaysAlive(t);
941	>	t.interrupt();
942	>	awaitTermination(t);
943	>	checkEmpty(q);
944		}
945
946		/**
947	<	* tryTransfer gives up after the timeout and return false
947	>	* tryTransfer gives up after the timeout and returns false
948		*/
949		public void testTryTransfer6() throws InterruptedException {
950		final LinkedTransferQueue q = new LinkedTransferQueue();
951
952		Thread t = newStartedThread(new CheckedRunnable() {
953		public void realRun() throws InterruptedException {
954	+	long t0 = System.nanoTime();
955		assertFalse(q.tryTransfer(new Object(),
956	<	SHORT_DELAY_MS, MILLISECONDS));
956	>	timeoutMillis(), MILLISECONDS));
957	>	assertTrue(millisElapsedSince(t0) >= timeoutMillis());
958	>	checkEmpty(q);
959		}});
960
961	<	Thread.sleep(SMALL_DELAY_MS);
961	>	awaitTermination(t);
962		checkEmpty(q);
1062	–	t.join();
963		}
964
965		/**
#	Line 1073 | Line 973 | public class LinkedTransferQueueTest ext
973		Thread t = newStartedThread(new CheckedRunnable() {
974		public void realRun() throws InterruptedException {
975		assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
976	<	assertTrue(q.isEmpty());
976	>	checkEmpty(q);
977		}});
978
979	<	Thread.sleep(SHORT_DELAY_MS);
979	>	while (q.size() != 2)
980	>	Thread.yield();
981		assertEquals(2, q.size());
982		assertSame(four, q.poll());
983		assertSame(five, q.poll());
984		checkEmpty(q);
985	<	t.join();
985	>	awaitTermination(t, MEDIUM_DELAY_MS);
986		}
987
988		/**
989	<	* tryTransfer attempts to enqueue into the q and fails returning
990	<	* false not enqueueing and the successive poll is null
989	>	* tryTransfer attempts to enqueue into the queue and fails
990	>	* returning false not enqueueing and the successive poll is null
991		*/
992		public void testTryTransfer8() throws InterruptedException {
993		final LinkedTransferQueue q = new LinkedTransferQueue();
994		assertTrue(q.offer(four));
995		assertEquals(1, q.size());
996	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
996	>	long t0 = System.nanoTime();
997	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
998	>	assertTrue(millisElapsedSince(t0) >= timeoutMillis());
999		assertEquals(1, q.size());
1000		assertSame(four, q.poll());
1001		assertNull(q.poll());
#	Line 1101 | Line 1004 | public class LinkedTransferQueueTest ext
1004
1005		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1006		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1007	<	assertTrue(q.isEmpty());
1007	>	checkEmpty(q);
1008		for (int i = 0; i < n; i++) {
1009		assertEquals(i, q.size());
1010		assertTrue(q.offer(i));

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