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Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.28 by jsr166, Thu Oct 28 17:57:26 2010 UTC vs.
Revision 1.48 by jsr166, Tue May 31 16:16:24 2011 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 static java.util.concurrent.TimeUnit.NANOSECONDS;
22	–	import junit.framework.Test;
23	–	import junit.framework.TestSuite;
23
24		@SuppressWarnings({"unchecked", "rawtypes"})
25		public class LinkedTransferQueueTest extends JSR166TestCase {
#	Line 40 | Line 39 | public class LinkedTransferQueueTest ext
39		new Generic().testSuite());
40		}
41
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	–
42		/**
43		* Constructor builds new queue with size being zero and empty
44		* being true
#	Line 88 | 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];
93	<	new LinkedTransferQueue(Arrays.asList(ints));
69	>	new LinkedTransferQueue(elements);
70		shouldThrow();
71		} catch (NullPointerException success) {}
72		}
#	Line 100 | 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];
105	<	for (int i = 0; i < SIZE - 1; ++i) {
106	<	ints[i] = i;
107	<	}
108	<	new LinkedTransferQueue(Arrays.asList(ints));
84	>	new LinkedTransferQueue(elements);
85		shouldThrow();
86		} catch (NullPointerException success) {}
87		}
#	Line 152 | Line 128 | public class LinkedTransferQueueTest ext
128		}
129
130		/**
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	–	/**
131		* addAll(this) throws IllegalArgumentException
132		*/
133		public void testAddAllSelf() {
#	Line 196 | Line 139 | public class LinkedTransferQueueTest ext
139		}
140
141		/**
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	–	/**
142		* addAll of a collection with any null elements throws
143		* NullPointerException after possibly adding some elements
144		*/
#	Line 241 | Line 172 | public class LinkedTransferQueueTest ext
172		}
173
174		/**
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	–	/**
175		* all elements successfully put are contained
176		*/
177		public void testPut() {
#	Line 277 | Line 197 | public class LinkedTransferQueueTest ext
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();
296	<	checkEmpty(q);
226	>	awaitTermination(t);
227		}
228
229		/**
#	Line 309 | 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 321 | 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	<	assertTrue(millisElapsedSince(t0) < 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 339 | 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) {
#	Line 347 | Line 280 | public class LinkedTransferQueueTest ext
280		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
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 410 | Line 372 | public class LinkedTransferQueueTest ext
372		*/
373		public void testRemoveElement() throws InterruptedException {
374		LinkedTransferQueue q = populatedQueue(SIZE);
375	<	for (int i = 1; i < SIZE; i += 2) {
375	>	for (int i = 1; i < SIZE; i+=2) {
376	>	assertTrue(q.contains(i));
377		assertTrue(q.remove(i));
378	+	assertFalse(q.contains(i));
379	+	assertTrue(q.contains(i-1));
380		}
381	<	for (int i = 0; i < SIZE; i += 2) {
381	>	for (int i = 0; i < SIZE; i+=2) {
382	>	assertTrue(q.contains(i));
383		assertTrue(q.remove(i));
384	<	assertFalse(q.remove(i + 1));
384	>	assertFalse(q.contains(i));
385	>	assertFalse(q.remove(i+1));
386	>	assertFalse(q.contains(i+1));
387		}
388		checkEmpty(q);
389		}
#	Line 512 | Line 480 | public class LinkedTransferQueueTest ext
480		}
481
482		/**
483	<	* toArray() contains all elements
483	>	* toArray() contains all elements in FIFO order
484		*/
485	<	public void testToArray() throws InterruptedException {
485	>	public void testToArray() {
486		LinkedTransferQueue q = populatedQueue(SIZE);
487		Object[] o = q.toArray();
488		for (int i = 0; i < o.length; i++) {
489	<	assertEquals(o[i], q.take());
489	>	assertSame(o[i], q.poll());
490		}
491		}
492
493		/**
494	<	* toArray(a) contains all elements
494	>	* toArray(a) contains all elements in FIFO order
495		*/
496	<	public void testToArray2() throws InterruptedException {
496	>	public void testToArray2() {
497		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
498		Integer[] ints = new Integer[SIZE];
499	<	ints = q.toArray(ints);
499	>	Integer[] array = q.toArray(ints);
500	>	assertSame(ints, array);
501		for (int i = 0; i < ints.length; i++) {
502	<	assertEquals(ints[i], q.take());
502	>	assertSame(ints[i], q.poll());
503		}
504		}
505
506		/**
507	<	* 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
507	>	* toArray(incompatible array type) throws ArrayStoreException
508		*/
509		public void testToArray1_BadArg() {
510		LinkedTransferQueue q = populatedQueue(SIZE);
511		try {
512	<	Object o[] = q.toArray(new String[10]);
512	>	q.toArray(new String[10]);
513		shouldThrow();
514		} catch (ArrayStoreException success) {}
515		}
#	Line 628 | Line 586 | public class LinkedTransferQueueTest ext
586		LinkedTransferQueue q = populatedQueue(SIZE);
587		String s = q.toString();
588		for (int i = 0; i < SIZE; ++i) {
589	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
589	>	assertTrue(s.contains(String.valueOf(i)));
590		}
591		}
592
#	Line 637 | Line 595 | public class LinkedTransferQueueTest ext
595		*/
596		public void testOfferInExecutor() {
597		final LinkedTransferQueue q = new LinkedTransferQueue();
598	<	q.add(one);
641	<	q.add(two);
598	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
599		ExecutorService executor = Executors.newFixedThreadPool(2);
600
601		executor.execute(new CheckedRunnable() {
602	<	public void realRun() {
603	<	assertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS));
602	>	public void realRun() throws InterruptedException {
603	>	threadsStarted.await();
604	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
605		}});
606
607		executor.execute(new CheckedRunnable() {
608		public void realRun() throws InterruptedException {
609	<	Thread.sleep(SMALL_DELAY_MS);
609	>	threadsStarted.await();
610		assertSame(one, q.take());
611	+	checkEmpty(q);
612		}});
613
614		joinPool(executor);
#	Line 660 | Line 619 | public class LinkedTransferQueueTest ext
619		*/
620		public void testPollInExecutor() {
621		final LinkedTransferQueue q = new LinkedTransferQueue();
622	+	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
623		ExecutorService executor = Executors.newFixedThreadPool(2);
624
625		executor.execute(new CheckedRunnable() {
626		public void realRun() throws InterruptedException {
627		assertNull(q.poll());
628	<	assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
629	<	assertTrue(q.isEmpty());
628	>	threadsStarted.await();
629	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
630	>	checkEmpty(q);
631		}});
632
633		executor.execute(new CheckedRunnable() {
634		public void realRun() throws InterruptedException {
635	<	Thread.sleep(SMALL_DELAY_MS);
635	>	threadsStarted.await();
636		q.put(one);
637		}});
638
#	Line 682 | Line 643 | public class LinkedTransferQueueTest ext
643		* A deserialized serialized queue has same elements in same order
644		*/
645		public void testSerialization() throws Exception {
646	<	LinkedTransferQueue q = populatedQueue(SIZE);
647	<
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();
646	>	Queue x = populatedQueue(SIZE);
647	>	Queue y = serialClone(x);
648
649	<	assertEquals(q.size(), r.size());
650	<	while (!q.isEmpty()) {
651	<	assertEquals(q.remove(), r.remove());
649	>	assertTrue(x != y);
650	>	assertEquals(x.size(), y.size());
651	>	assertEquals(x.toString(), y.toString());
652	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
653	>	while (!x.isEmpty()) {
654	>	assertFalse(y.isEmpty());
655	>	assertEquals(x.remove(), y.remove());
656		}
657	<	}
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) {}
657	>	assertTrue(y.isEmpty());
658		}
659
660		/**
#	Line 765 | Line 698 | public class LinkedTransferQueueTest ext
698		for (int i = 0; i < SIZE; ++i) {
699		assertEquals(l.get(i), i);
700		}
701	<	t.join();
701	>	awaitTermination(t, MEDIUM_DELAY_MS);
702		assertTrue(q.size() + l.size() >= SIZE);
703		}
704
705		/**
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	–	/**
706		* drainTo(c, n) empties first min(n, size) elements of queue into c
707		*/
708		public void testDrainToN() {
#	Line 821 | Line 732 | public class LinkedTransferQueueTest ext
732		final LinkedTransferQueue q = new LinkedTransferQueue();
733		assertEquals(q.getWaitingConsumerCount(), 0);
734		assertFalse(q.hasWaitingConsumer());
735	+	final CountDownLatch threadStarted = new CountDownLatch(1);
736
737		Thread t = newStartedThread(new CheckedRunnable() {
738		public void realRun() throws InterruptedException {
739	<	Thread.sleep(SMALL_DELAY_MS);
740	<	assertTrue(q.hasWaitingConsumer());
829	<	assertEquals(q.getWaitingConsumerCount(), 1);
830	<	assertTrue(q.offer(one));
831	<	assertFalse(q.hasWaitingConsumer());
739	>	threadStarted.countDown();
740	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
741		assertEquals(q.getWaitingConsumerCount(), 0);
742	+	assertFalse(q.hasWaitingConsumer());
743		}});
744
745	<	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
745	>	threadStarted.await();
746	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
747	>	assertEquals(q.getWaitingConsumerCount(), 1);
748	>	assertTrue(q.hasWaitingConsumer());
749	>
750	>	assertTrue(q.offer(one));
751		assertEquals(q.getWaitingConsumerCount(), 0);
752		assertFalse(q.hasWaitingConsumer());
753	<	t.join();
753	>
754	>	awaitTermination(t, MEDIUM_DELAY_MS);
755		}
756
757		/**
#	Line 856 | Line 772 | public class LinkedTransferQueueTest ext
772		public void testTransfer2() throws InterruptedException {
773		final LinkedTransferQueue<Integer> q
774		= new LinkedTransferQueue<Integer>();
775	+	final CountDownLatch threadStarted = new CountDownLatch(1);
776
777		Thread t = newStartedThread(new CheckedRunnable() {
778		public void realRun() throws InterruptedException {
779	<	q.transfer(SIZE);
780	<	assertTrue(q.isEmpty());
779	>	threadStarted.countDown();
780	>	q.transfer(five);
781	>	checkEmpty(q);
782		}});
783
784	<	Thread.sleep(SHORT_DELAY_MS);
784	>	threadStarted.await();
785	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
786		assertEquals(1, q.size());
787	<	assertEquals(SIZE, (int) q.poll());
788	<	assertTrue(q.isEmpty());
789	<	t.join();
787	>	assertSame(five, q.poll());
788	>	checkEmpty(q);
789	>	awaitTermination(t, MEDIUM_DELAY_MS);
790		}
791
792		/**
#	Line 879 | Line 798 | public class LinkedTransferQueueTest ext
798
799		Thread first = newStartedThread(new CheckedRunnable() {
800		public void realRun() throws InterruptedException {
801	<	Integer i = SIZE + 1;
802	<	q.transfer(i);
884	<	assertTrue(!q.contains(i));
801	>	q.transfer(four);
802	>	assertTrue(!q.contains(four));
803		assertEquals(1, q.size());
804		}});
805
806		Thread interruptedThread = newStartedThread(
807		new CheckedInterruptedRunnable() {
808		public void realRun() throws InterruptedException {
809	<	while (q.size() == 0)
809	>	while (q.isEmpty())
810		Thread.yield();
811	<	q.transfer(SIZE);
811	>	q.transfer(five);
812		}});
813
814		while (q.size() < 2)
815		Thread.yield();
816		assertEquals(2, q.size());
817	<	assertEquals(SIZE + 1, (int) q.poll());
817	>	assertSame(four, q.poll());
818		first.join();
819		assertEquals(1, q.size());
820		interruptedThread.interrupt();
821		interruptedThread.join();
822	<	assertEquals(0, q.size());
905	<	assertTrue(q.isEmpty());
822	>	checkEmpty(q);
823		}
824
825		/**
#	Line 919 | Line 836 | public class LinkedTransferQueueTest ext
836		assertSame(three, q.poll());
837		}});
838
839	<	Thread.sleep(SHORT_DELAY_MS);
839	>	while (q.isEmpty())
840	>	Thread.yield();
841	>	assertFalse(q.isEmpty());
842	>	assertEquals(1, q.size());
843		assertTrue(q.offer(three));
844		assertSame(four, q.poll());
845	<	t.join();
845	>	awaitTermination(t, MEDIUM_DELAY_MS);
846		}
847
848		/**
#	Line 935 | Line 855 | public class LinkedTransferQueueTest ext
855
856		Thread t = newStartedThread(new CheckedRunnable() {
857		public void realRun() throws InterruptedException {
858	<	q.transfer(SIZE);
858	>	q.transfer(four);
859		checkEmpty(q);
860		}});
861
862	<	Thread.sleep(SHORT_DELAY_MS);
863	<	assertEquals(SIZE, (int) q.take());
862	>	while (q.isEmpty())
863	>	Thread.yield();
864	>	assertFalse(q.isEmpty());
865	>	assertEquals(1, q.size());
866	>	assertSame(four, q.take());
867		checkEmpty(q);
868	<	t.join();
868	>	awaitTermination(t, MEDIUM_DELAY_MS);
869		}
870
871		/**
#	Line 980 | Line 903 | public class LinkedTransferQueueTest ext
903		while (! q.hasWaitingConsumer())
904		Thread.yield();
905		assertTrue(q.hasWaitingConsumer());
906	<	assertTrue(q.isEmpty());
984	<	assertEquals(q.size(), 0);
906	>	checkEmpty(q);
907		assertTrue(q.tryTransfer(hotPotato));
908		}});
909
910		assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
911		checkEmpty(q);
912	<	t.join();
912	>	awaitTermination(t, MEDIUM_DELAY_MS);
913		}
914
915		/**
#	Line 1003 | Line 925 | public class LinkedTransferQueueTest ext
925		while (! q.hasWaitingConsumer())
926		Thread.yield();
927		assertTrue(q.hasWaitingConsumer());
928	<	assertTrue(q.isEmpty());
1007	<	assertEquals(q.size(), 0);
928	>	checkEmpty(q);
929		assertTrue(q.tryTransfer(hotPotato));
930		}});
931
932		assertSame(q.take(), hotPotato);
933		checkEmpty(q);
934	<	t.join();
934	>	awaitTermination(t, MEDIUM_DELAY_MS);
935		}
936
937		/**
938	<	* tryTransfer waits the amount given if interrupted, and
1018	<	* throws interrupted exception
938	>	* tryTransfer blocks interruptibly if no takers
939		*/
940		public void testTryTransfer5() throws InterruptedException {
941		final LinkedTransferQueue q = new LinkedTransferQueue();
942	+	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
943	+	assertTrue(q.isEmpty());
944
945	<	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
945	>	Thread t = newStartedThread(new CheckedRunnable() {
946		public void realRun() throws InterruptedException {
947	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
947	>	Thread.currentThread().interrupt();
948	>	try {
949	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
950	>	shouldThrow();
951	>	} catch (InterruptedException success) {}
952	>	assertFalse(Thread.interrupted());
953	>
954	>	pleaseInterrupt.countDown();
955	>	try {
956	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
957	>	shouldThrow();
958	>	} catch (InterruptedException success) {}
959	>	assertFalse(Thread.interrupted());
960		}});
961
962	<	Thread.sleep(SMALL_DELAY_MS);
963	<	toInterrupt.interrupt();
964	<	toInterrupt.join();
962	>	await(pleaseInterrupt);
963	>	assertThreadStaysAlive(t);
964	>	t.interrupt();
965	>	awaitTermination(t);
966	>	checkEmpty(q);
967		}
968
969		/**
970	<	* tryTransfer gives up after the timeout and return false
970	>	* tryTransfer gives up after the timeout and returns false
971		*/
972		public void testTryTransfer6() throws InterruptedException {
973		final LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 1040 | Line 976 | public class LinkedTransferQueueTest ext
976		public void realRun() throws InterruptedException {
977		long t0 = System.nanoTime();
978		assertFalse(q.tryTransfer(new Object(),
979	<	SHORT_DELAY_MS, MILLISECONDS));
980	<	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
979	>	timeoutMillis(), MILLISECONDS));
980	>	assertTrue(millisElapsedSince(t0) >= timeoutMillis());
981	>	checkEmpty(q);
982		}});
983
984	<	checkEmpty(q);
1048	<	awaitTermination(t, MEDIUM_DELAY_MS);
984	>	awaitTermination(t);
985		checkEmpty(q);
986		}
987
#	Line 1060 | Line 996 | public class LinkedTransferQueueTest ext
996		Thread t = newStartedThread(new CheckedRunnable() {
997		public void realRun() throws InterruptedException {
998		assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
999	<	assertTrue(q.isEmpty());
999	>	checkEmpty(q);
1000		}});
1001
1002	<	Thread.sleep(SHORT_DELAY_MS);
1002	>	while (q.size() != 2)
1003	>	Thread.yield();
1004		assertEquals(2, q.size());
1005		assertSame(four, q.poll());
1006		assertSame(five, q.poll());
1007		checkEmpty(q);
1008	<	t.join();
1008	>	awaitTermination(t, MEDIUM_DELAY_MS);
1009		}
1010
1011		/**
1012	<	* tryTransfer attempts to enqueue into the q and fails returning
1013	<	* false not enqueueing and the successive poll is null
1012	>	* tryTransfer attempts to enqueue into the queue and fails
1013	>	* returning false not enqueueing and the successive poll is null
1014		*/
1015		public void testTryTransfer8() throws InterruptedException {
1016		final LinkedTransferQueue q = new LinkedTransferQueue();
1017		assertTrue(q.offer(four));
1018		assertEquals(1, q.size());
1019	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1019	>	long t0 = System.nanoTime();
1020	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
1021	>	assertTrue(millisElapsedSince(t0) >= timeoutMillis());
1022		assertEquals(1, q.size());
1023		assertSame(four, q.poll());
1024		assertNull(q.poll());
#	Line 1088 | Line 1027 | public class LinkedTransferQueueTest ext
1027
1028		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1029		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1030	<	assertTrue(q.isEmpty());
1030	>	checkEmpty(q);
1031		for (int i = 0; i < n; i++) {
1032		assertEquals(i, q.size());
1033		assertTrue(q.offer(i));

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