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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.28 by jsr166, Thu Oct 28 17:57:26 2010 UTC vs.
Revision 1.54 by jsr166, Wed Dec 31 16:44:02 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;
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;
21	–	import static java.util.concurrent.TimeUnit.NANOSECONDS;
22	–	import junit.framework.Test;
23	–	import junit.framework.TestSuite;
22
23		@SuppressWarnings({"unchecked", "rawtypes"})
24		public class LinkedTransferQueueTest extends JSR166TestCase {
#	Line 40 | Line 38 | public class LinkedTransferQueueTest ext
38		new Generic().testSuite());
39		}
40
43	–	void checkEmpty(LinkedTransferQueue q) throws InterruptedException {
44	–	assertTrue(q.isEmpty());
45	–	assertEquals(0, q.size());
46	–	assertNull(q.peek());
47	–	assertNull(q.poll());
48	–	assertNull(q.poll(0, MILLISECONDS));
49	–	assertEquals(q.toString(), "[]");
50	–	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
51	–	assertFalse(q.iterator().hasNext());
52	–	try {
53	–	q.element();
54	–	shouldThrow();
55	–	} catch (NoSuchElementException success) {}
56	–	try {
57	–	q.iterator().next();
58	–	shouldThrow();
59	–	} catch (NoSuchElementException success) {}
60	–	try {
61	–	q.remove();
62	–	shouldThrow();
63	–	} catch (NoSuchElementException success) {}
64	–	}
65	–
41		/**
42		* Constructor builds new queue with size being zero and empty
43		* being true
#	Line 88 | Line 63 | public class LinkedTransferQueueTest ext
63		* NullPointerException
64		*/
65		public void testConstructor3() {
66	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
67		try {
68	<	Integer[] ints = new Integer[SIZE];
93	<	new LinkedTransferQueue(Arrays.asList(ints));
68	>	new LinkedTransferQueue(elements);
69		shouldThrow();
70		} catch (NullPointerException success) {}
71		}
#	Line 100 | Line 75 | public class LinkedTransferQueueTest ext
75		* throws NullPointerException
76		*/
77		public void testConstructor4() {
78	+	Integer[] ints = new Integer[SIZE];
79	+	for (int i = 0; i < SIZE-1; ++i)
80	+	ints[i] = i;
81	+	Collection<Integer> elements = Arrays.asList(ints);
82		try {
83	<	Integer[] ints = new Integer[SIZE];
105	<	for (int i = 0; i < SIZE - 1; ++i) {
106	<	ints[i] = i;
107	<	}
108	<	new LinkedTransferQueue(Arrays.asList(ints));
83	>	new LinkedTransferQueue(elements);
84		shouldThrow();
85		} catch (NullPointerException success) {}
86		}
#	Line 152 | Line 127 | public class LinkedTransferQueueTest ext
127		}
128
129		/**
155	–	* offer(null) throws NullPointerException
156	–	*/
157	–	public void testOfferNull() {
158	–	try {
159	–	LinkedTransferQueue q = new LinkedTransferQueue();
160	–	q.offer(null);
161	–	shouldThrow();
162	–	} catch (NullPointerException success) {}
163	–	}
164	–
165	–	/**
166	–	* add(null) throws NullPointerException
167	–	*/
168	–	public void testAddNull() {
169	–	try {
170	–	LinkedTransferQueue q = new LinkedTransferQueue();
171	–	q.add(null);
172	–	shouldThrow();
173	–	} catch (NullPointerException success) {}
174	–	}
175	–
176	–	/**
177	–	* addAll(null) throws NullPointerException
178	–	*/
179	–	public void testAddAll1() {
180	–	try {
181	–	LinkedTransferQueue q = new LinkedTransferQueue();
182	–	q.addAll(null);
183	–	shouldThrow();
184	–	} catch (NullPointerException success) {}
185	–	}
186	–
187	–	/**
130		* addAll(this) throws IllegalArgumentException
131		*/
132		public void testAddAllSelf() {
#	Line 196 | Line 138 | public class LinkedTransferQueueTest ext
138		}
139
140		/**
199	–	* addAll of a collection with null elements throws NullPointerException
200	–	*/
201	–	public void testAddAll2() {
202	–	try {
203	–	LinkedTransferQueue q = new LinkedTransferQueue();
204	–	Integer[] ints = new Integer[SIZE];
205	–	q.addAll(Arrays.asList(ints));
206	–	shouldThrow();
207	–	} catch (NullPointerException success) {}
208	–	}
209	–
210	–	/**
141		* addAll of a collection with any null elements throws
142		* NullPointerException after possibly adding some elements
143		*/
#	Line 241 | Line 171 | public class LinkedTransferQueueTest ext
171		}
172
173		/**
244	–	* put(null) throws NullPointerException
245	–	*/
246	–	public void testPutNull() throws InterruptedException {
247	–	try {
248	–	LinkedTransferQueue q = new LinkedTransferQueue();
249	–	q.put(null);
250	–	shouldThrow();
251	–	} catch (NullPointerException success) {}
252	–	}
253	–
254	–	/**
174		* all elements successfully put are contained
175		*/
176		public void testPut() {
177		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
178		for (int i = 0; i < SIZE; ++i) {
179	<	assertEquals(q.size(), i);
179	>	assertEquals(i, q.size());
180		q.put(i);
181		assertTrue(q.contains(i));
182		}
#	Line 277 | Line 196 | public class LinkedTransferQueueTest ext
196		* take removes existing elements until empty, then blocks interruptibly
197		*/
198		public void testBlockingTake() throws InterruptedException {
199	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
200	<	Thread t = new Thread(new CheckedRunnable() {
199	>	final BlockingQueue q = populatedQueue(SIZE);
200	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
201	>	Thread t = newStartedThread(new CheckedRunnable() {
202		public void realRun() throws InterruptedException {
203		for (int i = 0; i < SIZE; ++i) {
204	<	assertEquals(i, (int) q.take());
204	>	assertEquals(i, q.take());
205		}
206	+
207	+	Thread.currentThread().interrupt();
208		try {
209		q.take();
210		shouldThrow();
211		} catch (InterruptedException success) {}
212	+	assertFalse(Thread.interrupted());
213	+
214	+	pleaseInterrupt.countDown();
215	+	try {
216	+	q.take();
217	+	shouldThrow();
218	+	} catch (InterruptedException success) {}
219	+	assertFalse(Thread.interrupted());
220		}});
221
222	<	t.start();
223	<	Thread.sleep(SHORT_DELAY_MS);
222	>	await(pleaseInterrupt);
223	>	assertThreadStaysAlive(t);
224		t.interrupt();
225	<	t.join();
296	<	checkEmpty(q);
225	>	awaitTermination(t);
226		}
227
228		/**
#	Line 309 | Line 238 | public class LinkedTransferQueueTest ext
238		}
239
240		/**
241	<	* timed pool with zero timeout succeeds when non-empty, else times out
241	>	* timed poll with zero timeout succeeds when non-empty, else times out
242		*/
243		public void testTimedPoll0() throws InterruptedException {
244		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
#	Line 321 | Line 250 | public class LinkedTransferQueueTest ext
250		}
251
252		/**
253	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
253	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
254		*/
255		public void testTimedPoll() throws InterruptedException {
256		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
257		for (int i = 0; i < SIZE; ++i) {
258	<	long t0 = System.nanoTime();
258	>	long startTime = System.nanoTime();
259		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
260	<	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
260	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
261		}
262	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
262	>	long startTime = System.nanoTime();
263	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
264	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
265		checkEmpty(q);
266		}
267
#	Line 339 | Line 270 | public class LinkedTransferQueueTest ext
270		* returning timeout status
271		*/
272		public void testInterruptedTimedPoll() throws InterruptedException {
273	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
273	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
274	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
275		Thread t = newStartedThread(new CheckedRunnable() {
276		public void realRun() throws InterruptedException {
277		for (int i = 0; i < SIZE; ++i) {
#	Line 347 | Line 279 | public class LinkedTransferQueueTest ext
279		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
280		assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
281		}
282	+	long t0 = System.nanoTime();
283	+	aboutToWait.countDown();
284		try {
285	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
285	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
286		shouldThrow();
287	<	} catch (InterruptedException success) {}
287	>	} catch (InterruptedException success) {
288	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
289	>	}
290		}});
291
292	<	Thread.sleep(SMALL_DELAY_MS);
292	>	aboutToWait.await();
293	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
294		t.interrupt();
295	<	t.join();
295	>	awaitTermination(t, MEDIUM_DELAY_MS);
296	>	checkEmpty(q);
297	>	}
298	>
299	>	/**
300	>	* timed poll after thread interrupted throws InterruptedException
301	>	* instead of returning timeout status
302	>	*/
303	>	public void testTimedPollAfterInterrupt() throws InterruptedException {
304	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
305	>	Thread t = newStartedThread(new CheckedRunnable() {
306	>	public void realRun() throws InterruptedException {
307	>	Thread.currentThread().interrupt();
308	>	for (int i = 0; i < SIZE; ++i) {
309	>	long t0 = System.nanoTime();
310	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
311	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
312	>	}
313	>	try {
314	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
315	>	shouldThrow();
316	>	} catch (InterruptedException success) {}
317	>	}});
318	>
319	>	awaitTermination(t, MEDIUM_DELAY_MS);
320		checkEmpty(q);
321		}
322
#	Line 406 | Line 367 | public class LinkedTransferQueueTest ext
367		}
368
369		/**
409	–	* remove(x) removes x and returns true if present
410	–	*/
411	–	public void testRemoveElement() throws InterruptedException {
412	–	LinkedTransferQueue q = populatedQueue(SIZE);
413	–	for (int i = 1; i < SIZE; i += 2) {
414	–	assertTrue(q.remove(i));
415	–	}
416	–	for (int i = 0; i < SIZE; i += 2) {
417	–	assertTrue(q.remove(i));
418	–	assertFalse(q.remove(i + 1));
419	–	}
420	–	checkEmpty(q);
421	–	}
422	–
423	–	/**
370		* An add following remove(x) succeeds
371		*/
372		public void testRemoveElementAndAdd() throws InterruptedException {
#	Line 512 | Line 458 | public class LinkedTransferQueueTest ext
458		}
459
460		/**
461	<	* toArray() contains all elements
461	>	* toArray() contains all elements in FIFO order
462		*/
463	<	public void testToArray() throws InterruptedException {
463	>	public void testToArray() {
464		LinkedTransferQueue q = populatedQueue(SIZE);
465		Object[] o = q.toArray();
466		for (int i = 0; i < o.length; i++) {
467	<	assertEquals(o[i], q.take());
467	>	assertSame(o[i], q.poll());
468		}
469		}
470
471		/**
472	<	* toArray(a) contains all elements
472	>	* toArray(a) contains all elements in FIFO order
473		*/
474	<	public void testToArray2() throws InterruptedException {
474	>	public void testToArray2() {
475		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
476		Integer[] ints = new Integer[SIZE];
477	<	ints = q.toArray(ints);
477	>	Integer[] array = q.toArray(ints);
478	>	assertSame(ints, array);
479		for (int i = 0; i < ints.length; i++) {
480	<	assertEquals(ints[i], q.take());
480	>	assertSame(ints[i], q.poll());
481		}
482		}
483
484		/**
485	<	* toArray(null) throws NullPointerException
539	<	*/
540	<	public void testToArray_BadArg() {
541	<	LinkedTransferQueue q = populatedQueue(SIZE);
542	<	try {
543	<	Object o[] = q.toArray(null);
544	<	shouldThrow();
545	<	} catch (NullPointerException success) {}
546	<	}
547	<
548	<	/**
549	<	* toArray(incompatible array type) throws CCE
485	>	* toArray(incompatible array type) throws ArrayStoreException
486		*/
487		public void testToArray1_BadArg() {
488		LinkedTransferQueue q = populatedQueue(SIZE);
489		try {
490	<	Object o[] = q.toArray(new String[10]);
490	>	q.toArray(new String[10]);
491		shouldThrow();
492		} catch (ArrayStoreException success) {}
493		}
#	Line 628 | Line 564 | public class LinkedTransferQueueTest ext
564		LinkedTransferQueue q = populatedQueue(SIZE);
565		String s = q.toString();
566		for (int i = 0; i < SIZE; ++i) {
567	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
567	>	assertTrue(s.contains(String.valueOf(i)));
568		}
569		}
570
#	Line 637 | Line 573 | public class LinkedTransferQueueTest ext
573		*/
574		public void testOfferInExecutor() {
575		final LinkedTransferQueue q = new LinkedTransferQueue();
576	<	q.add(one);
641	<	q.add(two);
576	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
577		ExecutorService executor = Executors.newFixedThreadPool(2);
578
579		executor.execute(new CheckedRunnable() {
580	<	public void realRun() {
581	<	assertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS));
580	>	public void realRun() throws InterruptedException {
581	>	threadsStarted.await();
582	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
583		}});
584
585		executor.execute(new CheckedRunnable() {
586		public void realRun() throws InterruptedException {
587	<	Thread.sleep(SMALL_DELAY_MS);
587	>	threadsStarted.await();
588		assertSame(one, q.take());
589	+	checkEmpty(q);
590		}});
591
592		joinPool(executor);
#	Line 660 | Line 597 | public class LinkedTransferQueueTest ext
597		*/
598		public void testPollInExecutor() {
599		final LinkedTransferQueue q = new LinkedTransferQueue();
600	+	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
601		ExecutorService executor = Executors.newFixedThreadPool(2);
602
603		executor.execute(new CheckedRunnable() {
604		public void realRun() throws InterruptedException {
605		assertNull(q.poll());
606	<	assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
607	<	assertTrue(q.isEmpty());
606	>	threadsStarted.await();
607	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
608	>	checkEmpty(q);
609		}});
610
611		executor.execute(new CheckedRunnable() {
612		public void realRun() throws InterruptedException {
613	<	Thread.sleep(SMALL_DELAY_MS);
613	>	threadsStarted.await();
614		q.put(one);
615		}});
616
#	Line 682 | Line 621 | public class LinkedTransferQueueTest ext
621		* A deserialized serialized queue has same elements in same order
622		*/
623		public void testSerialization() throws Exception {
624	<	LinkedTransferQueue q = populatedQueue(SIZE);
625	<
687	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
688	<	ObjectOutputStream out
689	<	= new ObjectOutputStream(new BufferedOutputStream(bout));
690	<	out.writeObject(q);
691	<	out.close();
692	<
693	<	ByteArrayInputStream bin
694	<	= new ByteArrayInputStream(bout.toByteArray());
695	<	ObjectInputStream in
696	<	= new ObjectInputStream(new BufferedInputStream(bin));
697	<	LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
624	>	Queue x = populatedQueue(SIZE);
625	>	Queue y = serialClone(x);
626
627	<	assertEquals(q.size(), r.size());
628	<	while (!q.isEmpty()) {
629	<	assertEquals(q.remove(), r.remove());
627	>	assertNotSame(y, x);
628	>	assertEquals(x.size(), y.size());
629	>	assertEquals(x.toString(), y.toString());
630	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
631	>	while (!x.isEmpty()) {
632	>	assertFalse(y.isEmpty());
633	>	assertEquals(x.remove(), y.remove());
634		}
635	<	}
704	<
705	<	/**
706	<	* drainTo(null) throws NullPointerException
707	<	*/
708	<	public void testDrainToNull() {
709	<	LinkedTransferQueue q = populatedQueue(SIZE);
710	<	try {
711	<	q.drainTo(null);
712	<	shouldThrow();
713	<	} catch (NullPointerException success) {}
714	<	}
715	<
716	<	/**
717	<	* drainTo(this) throws IllegalArgumentException
718	<	*/
719	<	public void testDrainToSelf() {
720	<	LinkedTransferQueue q = populatedQueue(SIZE);
721	<	try {
722	<	q.drainTo(q);
723	<	shouldThrow();
724	<	} catch (IllegalArgumentException success) {}
635	>	assertTrue(y.isEmpty());
636		}
637
638		/**
#	Line 731 | Line 642 | public class LinkedTransferQueueTest ext
642		LinkedTransferQueue q = populatedQueue(SIZE);
643		ArrayList l = new ArrayList();
644		q.drainTo(l);
645	<	assertEquals(q.size(), 0);
646	<	assertEquals(l.size(), SIZE);
645	>	assertEquals(0, q.size());
646	>	assertEquals(SIZE, l.size());
647		for (int i = 0; i < SIZE; ++i) {
648	<	assertEquals(l.get(i), i);
648	>	assertEquals(i, l.get(i));
649		}
650		q.add(zero);
651		q.add(one);
#	Line 743 | Line 654 | public class LinkedTransferQueueTest ext
654		assertTrue(q.contains(one));
655		l.clear();
656		q.drainTo(l);
657	<	assertEquals(q.size(), 0);
658	<	assertEquals(l.size(), 2);
657	>	assertEquals(0, q.size());
658	>	assertEquals(2, l.size());
659		for (int i = 0; i < 2; ++i) {
660	<	assertEquals(l.get(i), i);
660	>	assertEquals(i, l.get(i));
661		}
662		}
663
#	Line 762 | Line 673 | public class LinkedTransferQueueTest ext
673		ArrayList l = new ArrayList();
674		q.drainTo(l);
675		assertTrue(l.size() >= SIZE);
676	<	for (int i = 0; i < SIZE; ++i) {
677	<	assertEquals(l.get(i), i);
678	<	}
768	<	t.join();
676	>	for (int i = 0; i < SIZE; ++i)
677	>	assertEquals(i, l.get(i));
678	>	awaitTermination(t, MEDIUM_DELAY_MS);
679		assertTrue(q.size() + l.size() >= SIZE);
680		}
681
682		/**
773	–	* drainTo(null, n) throws NullPointerException
774	–	*/
775	–	public void testDrainToNullN() {
776	–	LinkedTransferQueue q = populatedQueue(SIZE);
777	–	try {
778	–	q.drainTo(null, SIZE);
779	–	shouldThrow();
780	–	} catch (NullPointerException success) {}
781	–	}
782	–
783	–	/**
784	–	* drainTo(this, n) throws IllegalArgumentException
785	–	*/
786	–	public void testDrainToSelfN() {
787	–	LinkedTransferQueue q = populatedQueue(SIZE);
788	–	try {
789	–	q.drainTo(q, SIZE);
790	–	shouldThrow();
791	–	} catch (IllegalArgumentException success) {}
792	–	}
793	–
794	–	/**
683		* drainTo(c, n) empties first min(n, size) elements of queue into c
684		*/
685		public void testDrainToN() {
#	Line 803 | Line 691 | public class LinkedTransferQueueTest ext
691		ArrayList l = new ArrayList();
692		q.drainTo(l, i);
693		int k = (i < SIZE) ? i : SIZE;
694	<	assertEquals(l.size(), k);
695	<	assertEquals(q.size(), SIZE - k);
696	<	for (int j = 0; j < k; ++j) {
697	<	assertEquals(l.get(j), j);
810	<	}
694	>	assertEquals(k, l.size());
695	>	assertEquals(SIZE - k, q.size());
696	>	for (int j = 0; j < k; ++j)
697	>	assertEquals(j, l.get(j));
698		while (q.poll() != null)
699		;
700		}
#	Line 819 | Line 706 | public class LinkedTransferQueueTest ext
706		*/
707		public void testWaitingConsumer() throws InterruptedException {
708		final LinkedTransferQueue q = new LinkedTransferQueue();
709	<	assertEquals(q.getWaitingConsumerCount(), 0);
709	>	assertEquals(0, q.getWaitingConsumerCount());
710		assertFalse(q.hasWaitingConsumer());
711	+	final CountDownLatch threadStarted = new CountDownLatch(1);
712
713		Thread t = newStartedThread(new CheckedRunnable() {
714		public void realRun() throws InterruptedException {
715	<	Thread.sleep(SMALL_DELAY_MS);
716	<	assertTrue(q.hasWaitingConsumer());
717	<	assertEquals(q.getWaitingConsumerCount(), 1);
830	<	assertTrue(q.offer(one));
715	>	threadStarted.countDown();
716	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
717	>	assertEquals(0, q.getWaitingConsumerCount());
718		assertFalse(q.hasWaitingConsumer());
832	–	assertEquals(q.getWaitingConsumerCount(), 0);
719		}});
720
721	<	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
722	<	assertEquals(q.getWaitingConsumerCount(), 0);
721	>	threadStarted.await();
722	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
723	>	assertEquals(1, q.getWaitingConsumerCount());
724	>	assertTrue(q.hasWaitingConsumer());
725	>
726	>	assertTrue(q.offer(one));
727	>	assertEquals(0, q.getWaitingConsumerCount());
728		assertFalse(q.hasWaitingConsumer());
729	<	t.join();
729	>
730	>	awaitTermination(t, MEDIUM_DELAY_MS);
731		}
732
733		/**
#	Line 856 | Line 748 | public class LinkedTransferQueueTest ext
748		public void testTransfer2() throws InterruptedException {
749		final LinkedTransferQueue<Integer> q
750		= new LinkedTransferQueue<Integer>();
751	+	final CountDownLatch threadStarted = new CountDownLatch(1);
752
753		Thread t = newStartedThread(new CheckedRunnable() {
754		public void realRun() throws InterruptedException {
755	<	q.transfer(SIZE);
756	<	assertTrue(q.isEmpty());
755	>	threadStarted.countDown();
756	>	q.transfer(five);
757	>	checkEmpty(q);
758		}});
759
760	<	Thread.sleep(SHORT_DELAY_MS);
760	>	threadStarted.await();
761	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
762		assertEquals(1, q.size());
763	<	assertEquals(SIZE, (int) q.poll());
764	<	assertTrue(q.isEmpty());
765	<	t.join();
763	>	assertSame(five, q.poll());
764	>	checkEmpty(q);
765	>	awaitTermination(t, MEDIUM_DELAY_MS);
766		}
767
768		/**
#	Line 879 | Line 774 | public class LinkedTransferQueueTest ext
774
775		Thread first = newStartedThread(new CheckedRunnable() {
776		public void realRun() throws InterruptedException {
777	<	Integer i = SIZE + 1;
778	<	q.transfer(i);
884	<	assertTrue(!q.contains(i));
777	>	q.transfer(four);
778	>	assertTrue(!q.contains(four));
779		assertEquals(1, q.size());
780		}});
781
782		Thread interruptedThread = newStartedThread(
783		new CheckedInterruptedRunnable() {
784		public void realRun() throws InterruptedException {
785	<	while (q.size() == 0)
785	>	while (q.isEmpty())
786		Thread.yield();
787	<	q.transfer(SIZE);
787	>	q.transfer(five);
788		}});
789
790		while (q.size() < 2)
791		Thread.yield();
792		assertEquals(2, q.size());
793	<	assertEquals(SIZE + 1, (int) q.poll());
793	>	assertSame(four, q.poll());
794		first.join();
795		assertEquals(1, q.size());
796		interruptedThread.interrupt();
797		interruptedThread.join();
798	<	assertEquals(0, q.size());
905	<	assertTrue(q.isEmpty());
798	>	checkEmpty(q);
799		}
800
801		/**
#	Line 919 | Line 812 | public class LinkedTransferQueueTest ext
812		assertSame(three, q.poll());
813		}});
814
815	<	Thread.sleep(SHORT_DELAY_MS);
815	>	while (q.isEmpty())
816	>	Thread.yield();
817	>	assertFalse(q.isEmpty());
818	>	assertEquals(1, q.size());
819		assertTrue(q.offer(three));
820		assertSame(four, q.poll());
821	<	t.join();
821	>	awaitTermination(t, MEDIUM_DELAY_MS);
822		}
823
824		/**
#	Line 935 | Line 831 | public class LinkedTransferQueueTest ext
831
832		Thread t = newStartedThread(new CheckedRunnable() {
833		public void realRun() throws InterruptedException {
834	<	q.transfer(SIZE);
834	>	q.transfer(four);
835		checkEmpty(q);
836		}});
837
838	<	Thread.sleep(SHORT_DELAY_MS);
839	<	assertEquals(SIZE, (int) q.take());
838	>	while (q.isEmpty())
839	>	Thread.yield();
840	>	assertFalse(q.isEmpty());
841	>	assertEquals(1, q.size());
842	>	assertSame(four, q.take());
843		checkEmpty(q);
844	<	t.join();
844	>	awaitTermination(t, MEDIUM_DELAY_MS);
845		}
846
847		/**
#	Line 980 | Line 879 | public class LinkedTransferQueueTest ext
879		while (! q.hasWaitingConsumer())
880		Thread.yield();
881		assertTrue(q.hasWaitingConsumer());
882	<	assertTrue(q.isEmpty());
984	<	assertEquals(q.size(), 0);
882	>	checkEmpty(q);
883		assertTrue(q.tryTransfer(hotPotato));
884		}});
885
886		assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
887		checkEmpty(q);
888	<	t.join();
888	>	awaitTermination(t, MEDIUM_DELAY_MS);
889		}
890
891		/**
#	Line 1003 | Line 901 | public class LinkedTransferQueueTest ext
901		while (! q.hasWaitingConsumer())
902		Thread.yield();
903		assertTrue(q.hasWaitingConsumer());
904	<	assertTrue(q.isEmpty());
1007	<	assertEquals(q.size(), 0);
904	>	checkEmpty(q);
905		assertTrue(q.tryTransfer(hotPotato));
906		}});
907
908		assertSame(q.take(), hotPotato);
909		checkEmpty(q);
910	<	t.join();
910	>	awaitTermination(t, MEDIUM_DELAY_MS);
911		}
912
913		/**
914	<	* tryTransfer waits the amount given if interrupted, and
1018	<	* throws interrupted exception
914	>	* tryTransfer blocks interruptibly if no takers
915		*/
916		public void testTryTransfer5() throws InterruptedException {
917		final LinkedTransferQueue q = new LinkedTransferQueue();
918	+	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
919	+	assertTrue(q.isEmpty());
920
921	<	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
921	>	Thread t = newStartedThread(new CheckedRunnable() {
922		public void realRun() throws InterruptedException {
923	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
923	>	Thread.currentThread().interrupt();
924	>	try {
925	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
926	>	shouldThrow();
927	>	} catch (InterruptedException success) {}
928	>	assertFalse(Thread.interrupted());
929	>
930	>	pleaseInterrupt.countDown();
931	>	try {
932	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
933	>	shouldThrow();
934	>	} catch (InterruptedException success) {}
935	>	assertFalse(Thread.interrupted());
936		}});
937
938	<	Thread.sleep(SMALL_DELAY_MS);
939	<	toInterrupt.interrupt();
940	<	toInterrupt.join();
938	>	await(pleaseInterrupt);
939	>	assertThreadStaysAlive(t);
940	>	t.interrupt();
941	>	awaitTermination(t);
942	>	checkEmpty(q);
943		}
944
945		/**
946	<	* tryTransfer gives up after the timeout and return false
946	>	* tryTransfer gives up after the timeout and returns false
947		*/
948		public void testTryTransfer6() throws InterruptedException {
949		final LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 1040 | Line 952 | public class LinkedTransferQueueTest ext
952		public void realRun() throws InterruptedException {
953		long t0 = System.nanoTime();
954		assertFalse(q.tryTransfer(new Object(),
955	<	SHORT_DELAY_MS, MILLISECONDS));
956	<	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
955	>	timeoutMillis(), MILLISECONDS));
956	>	assertTrue(millisElapsedSince(t0) >= timeoutMillis());
957	>	checkEmpty(q);
958		}});
959
960	<	checkEmpty(q);
1048	<	awaitTermination(t, MEDIUM_DELAY_MS);
960	>	awaitTermination(t);
961		checkEmpty(q);
962		}
963
#	Line 1060 | Line 972 | public class LinkedTransferQueueTest ext
972		Thread t = newStartedThread(new CheckedRunnable() {
973		public void realRun() throws InterruptedException {
974		assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
975	<	assertTrue(q.isEmpty());
975	>	checkEmpty(q);
976		}});
977
978	<	Thread.sleep(SHORT_DELAY_MS);
978	>	while (q.size() != 2)
979	>	Thread.yield();
980		assertEquals(2, q.size());
981		assertSame(four, q.poll());
982		assertSame(five, q.poll());
983		checkEmpty(q);
984	<	t.join();
984	>	awaitTermination(t, MEDIUM_DELAY_MS);
985		}
986
987		/**
988	<	* tryTransfer attempts to enqueue into the q and fails returning
989	<	* false not enqueueing and the successive poll is null
988	>	* tryTransfer attempts to enqueue into the queue and fails
989	>	* returning false not enqueueing and the successive poll is null
990		*/
991		public void testTryTransfer8() throws InterruptedException {
992		final LinkedTransferQueue q = new LinkedTransferQueue();
993		assertTrue(q.offer(four));
994		assertEquals(1, q.size());
995	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
995	>	long t0 = System.nanoTime();
996	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
997	>	assertTrue(millisElapsedSince(t0) >= timeoutMillis());
998		assertEquals(1, q.size());
999		assertSame(four, q.poll());
1000		assertNull(q.poll());
#	Line 1088 | Line 1003 | public class LinkedTransferQueueTest ext
1003
1004		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1005		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1006	<	assertTrue(q.isEmpty());
1006	>	checkEmpty(q);
1007		for (int i = 0; i < n; i++) {
1008		assertEquals(i, q.size());
1009		assertTrue(q.offer(i));
#	Line 1097 | Line 1012 | public class LinkedTransferQueueTest ext
1012		assertFalse(q.isEmpty());
1013		return q;
1014		}
1015	+
1016	+	/**
1017	+	* remove(null), contains(null) always return false
1018	+	*/
1019	+	public void testNeverContainsNull() {
1020	+	Collection<?>[] qs = {
1021	+	new LinkedTransferQueue<Object>(),
1022	+	populatedQueue(2),
1023	+	};
1024	+
1025	+	for (Collection<?> q : qs) {
1026	+	assertFalse(q.contains(null));
1027	+	assertFalse(q.remove(null));
1028	+	}
1029	+	}
1030		}

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