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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.20 by jsr166, Sun Nov 22 18:57:17 2009 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 junit.framework.Test;
22	–	import junit.framework.TestSuite;
22
23		@SuppressWarnings({"unchecked", "rawtypes"})
24		public class LinkedTransferQueueTest extends JSR166TestCase {
25
26	+	public static class Generic extends BlockingQueueTest {
27	+	protected BlockingQueue emptyCollection() {
28	+	return new LinkedTransferQueue();
29	+	}
30	+	}
31	+
32		public static void main(String[] args) {
33		junit.textui.TestRunner.run(suite());
34		}
35
36		public static Test suite() {
37	<	return new TestSuite(LinkedTransferQueueTest.class);
38	<	}
34	<
35	<	void checkEmpty(LinkedTransferQueue q) throws InterruptedException {
36	<	assertTrue(q.isEmpty());
37	<	assertEquals(0, q.size());
38	<	assertNull(q.peek());
39	<	assertNull(q.poll());
40	<	assertNull(q.poll(0, MILLISECONDS));
41	<	assertEquals(q.toString(), "[]");
42	<	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
43	<	assertFalse(q.iterator().hasNext());
44	<	try {
45	<	q.element();
46	<	shouldThrow();
47	<	} catch (NoSuchElementException success) {}
48	<	try {
49	<	q.iterator().next();
50	<	shouldThrow();
51	<	} catch (NoSuchElementException success) {}
52	<	try {
53	<	q.remove();
54	<	shouldThrow();
55	<	} catch (NoSuchElementException success) {}
37	>	return newTestSuite(LinkedTransferQueueTest.class,
38	>	new Generic().testSuite());
39		}
40
41		/**
#	Line 80 | 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];
85	<	new LinkedTransferQueue(Arrays.asList(ints));
68	>	new LinkedTransferQueue(elements);
69		shouldThrow();
70		} catch (NullPointerException success) {}
71		}
#	Line 92 | 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];
97	<	for (int i = 0; i < SIZE - 1; ++i) {
98	<	ints[i] = i;
99	<	}
100	<	new LinkedTransferQueue(Arrays.asList(ints));
83	>	new LinkedTransferQueue(elements);
84		shouldThrow();
85		} catch (NullPointerException success) {}
86		}
#	Line 144 | Line 127 | public class LinkedTransferQueueTest ext
127		}
128
129		/**
147	–	* offer(null) throws NullPointerException
148	–	*/
149	–	public void testOfferNull() {
150	–	try {
151	–	LinkedTransferQueue q = new LinkedTransferQueue();
152	–	q.offer(null);
153	–	shouldThrow();
154	–	} catch (NullPointerException success) {}
155	–	}
156	–
157	–	/**
158	–	* add(null) throws NullPointerException
159	–	*/
160	–	public void testAddNull() {
161	–	try {
162	–	LinkedTransferQueue q = new LinkedTransferQueue();
163	–	q.add(null);
164	–	shouldThrow();
165	–	} catch (NullPointerException success) {}
166	–	}
167	–
168	–	/**
169	–	* addAll(null) throws NullPointerException
170	–	*/
171	–	public void testAddAll1() {
172	–	try {
173	–	LinkedTransferQueue q = new LinkedTransferQueue();
174	–	q.addAll(null);
175	–	shouldThrow();
176	–	} catch (NullPointerException success) {}
177	–	}
178	–
179	–	/**
130		* addAll(this) throws IllegalArgumentException
131		*/
132		public void testAddAllSelf() {
#	Line 188 | Line 138 | public class LinkedTransferQueueTest ext
138		}
139
140		/**
191	–	* addAll of a collection with null elements throws NullPointerException
192	–	*/
193	–	public void testAddAll2() {
194	–	try {
195	–	LinkedTransferQueue q = new LinkedTransferQueue();
196	–	Integer[] ints = new Integer[SIZE];
197	–	q.addAll(Arrays.asList(ints));
198	–	shouldThrow();
199	–	} catch (NullPointerException success) {}
200	–	}
201	–
202	–	/**
141		* addAll of a collection with any null elements throws
142		* NullPointerException after possibly adding some elements
143		*/
#	Line 233 | Line 171 | public class LinkedTransferQueueTest ext
171		}
172
173		/**
236	–	* put(null) throws NullPointerException
237	–	*/
238	–	public void testPutNull() throws InterruptedException {
239	–	try {
240	–	LinkedTransferQueue q = new LinkedTransferQueue();
241	–	q.put(null);
242	–	shouldThrow();
243	–	} catch (NullPointerException success) {}
244	–	}
245	–
246	–	/**
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 266 | Line 193 | public class LinkedTransferQueueTest ext
193		}
194
195		/**
196	<	* take blocks interruptibly when empty
270	<	*/
271	<	public void testTakeFromEmpty() throws InterruptedException {
272	<	final LinkedTransferQueue q = new LinkedTransferQueue();
273	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
274	<	void realRun() throws InterruptedException {
275	<	q.take();
276	<	}});
277	<	Thread.sleep(SHORT_DELAY_MS);
278	<	t.interrupt();
279	<	t.join();
280	<	}
281	<
282	<	/**
283	<	* Take removes existing elements until empty, then blocks interruptibly
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();
302	<	checkEmpty(q);
225	>	awaitTermination(t);
226		}
227
228		/**
#	Line 315 | 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 327 | 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	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
338	<	assertTrue(millisElapsed < 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 346 | 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	<	void realRun() throws InterruptedException {
276	>	public void realRun() throws InterruptedException {
277		for (int i = 0; i < SIZE; ++i) {
278		long t0 = System.nanoTime();
279	<	threadAssertEquals(i, (int) q.poll(LONG_DELAY_MS,
280	<	MILLISECONDS));
356	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
357	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
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 before a delayed offer fails; after offer succeeds;
301	<	* on interruption throws
300	>	* timed poll after thread interrupted throws InterruptedException
301	>	* instead of returning timeout status
302		*/
303	<	public void testTimedPollWithOffer() throws InterruptedException {
304	<	final LinkedTransferQueue q = new LinkedTransferQueue();
305	<	Thread t = new Thread(new CheckedRunnable() {
306	<	void realRun() throws InterruptedException {
307	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
308	<	assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS));
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(LONG_DELAY_MS, MILLISECONDS);
314	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
315		shouldThrow();
316		} catch (InterruptedException success) {}
317		}});
318
319	<	t.start();
320	<	Thread.sleep(SMALL_DELAY_MS);
389	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
390	<	t.interrupt();
391	<	t.join();
319	>	awaitTermination(t, MEDIUM_DELAY_MS);
320	>	checkEmpty(q);
321		}
322
323		/**
#	Line 438 | Line 367 | public class LinkedTransferQueueTest ext
367		}
368
369		/**
441	–	* remove(x) removes x and returns true if present
442	–	*/
443	–	public void testRemoveElement() throws InterruptedException {
444	–	LinkedTransferQueue q = populatedQueue(SIZE);
445	–	for (int i = 1; i < SIZE; i += 2) {
446	–	assertTrue(q.remove(i));
447	–	}
448	–	for (int i = 0; i < SIZE; i += 2) {
449	–	assertTrue(q.remove(i));
450	–	assertFalse(q.remove(i + 1));
451	–	}
452	–	checkEmpty(q);
453	–	}
454	–
455	–	/**
370		* An add following remove(x) succeeds
371		*/
372		public void testRemoveElementAndAdd() throws InterruptedException {
#	Line 462 | Line 376 | public class LinkedTransferQueueTest ext
376		assertTrue(q.remove(one));
377		assertTrue(q.remove(two));
378		assertTrue(q.add(three));
379	<	assertTrue(q.take() == three);
379	>	assertSame(q.take(), three);
380		}
381
382		/**
#	Line 544 | 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
571	<	*/
572	<	public void testToArray_BadArg() {
573	<	LinkedTransferQueue q = populatedQueue(SIZE);
574	<	try {
575	<	Object o[] = q.toArray(null);
576	<	shouldThrow();
577	<	} catch (NullPointerException success) {}
578	<	}
579	<
580	<	/**
581	<	* 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 615 | Line 519 | public class LinkedTransferQueueTest ext
519		it.remove();
520
521		it = q.iterator();
522	<	assertEquals(it.next(), one);
523	<	assertEquals(it.next(), three);
522	>	assertSame(it.next(), one);
523	>	assertSame(it.next(), three);
524		assertFalse(it.hasNext());
525		}
526
#	Line 660 | 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 669 | Line 573 | public class LinkedTransferQueueTest ext
573		*/
574		public void testOfferInExecutor() {
575		final LinkedTransferQueue q = new LinkedTransferQueue();
576	<	q.add(one);
673	<	q.add(two);
576	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
577		ExecutorService executor = Executors.newFixedThreadPool(2);
578
579		executor.execute(new CheckedRunnable() {
580	<	void realRun() {
581	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS,
582	<	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	<	void realRun() throws InterruptedException {
587	<	Thread.sleep(SMALL_DELAY_MS);
588	<	threadAssertEquals(one, q.take());
586	>	public void realRun() throws InterruptedException {
587	>	threadsStarted.await();
588	>	assertSame(one, q.take());
589	>	checkEmpty(q);
590		}});
591
592		joinPool(executor);
#	Line 693 | 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	<	void realRun() throws InterruptedException {
605	<	threadAssertNull(q.poll());
606	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS,
607	<	MILLISECONDS));
608	<	threadAssertTrue(q.isEmpty());
604	>	public void realRun() throws InterruptedException {
605	>	assertNull(q.poll());
606	>	threadsStarted.await();
607	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
608	>	checkEmpty(q);
609		}});
610
611		executor.execute(new CheckedRunnable() {
612	<	void realRun() throws InterruptedException {
613	<	Thread.sleep(SMALL_DELAY_MS);
612	>	public void realRun() throws InterruptedException {
613	>	threadsStarted.await();
614		q.put(one);
615		}});
616
#	Line 716 | 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	<
721	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
722	<	ObjectOutputStream out
723	<	= new ObjectOutputStream(new BufferedOutputStream(bout));
724	<	out.writeObject(q);
725	<	out.close();
726	<
727	<	ByteArrayInputStream bin
728	<	= new ByteArrayInputStream(bout.toByteArray());
729	<	ObjectInputStream in
730	<	= new ObjectInputStream(new BufferedInputStream(bin));
731	<	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	<	}
738	<
739	<	/**
740	<	* drainTo(null) throws NullPointerException
741	<	*/
742	<	public void testDrainToNull() {
743	<	LinkedTransferQueue q = populatedQueue(SIZE);
744	<	try {
745	<	q.drainTo(null);
746	<	shouldThrow();
747	<	} catch (NullPointerException success) {}
748	<	}
749	<
750	<	/**
751	<	* drainTo(this) throws IllegalArgumentException
752	<	*/
753	<	public void testDrainToSelf() {
754	<	LinkedTransferQueue q = populatedQueue(SIZE);
755	<	try {
756	<	q.drainTo(q);
757	<	shouldThrow();
758	<	} catch (IllegalArgumentException success) {}
635	>	assertTrue(y.isEmpty());
636		}
637
638		/**
#	Line 765 | 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 777 | 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 790 | Line 667 | public class LinkedTransferQueueTest ext
667		public void testDrainToWithActivePut() throws InterruptedException {
668		final LinkedTransferQueue q = populatedQueue(SIZE);
669		Thread t = newStartedThread(new CheckedRunnable() {
670	<	void realRun() {
670	>	public void realRun() {
671		q.put(SIZE + 1);
672		}});
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	<	}
802	<	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		/**
683	<	* drainTo(null, n) throws NullPointerException
808	<	*/
809	<	public void testDrainToNullN() {
810	<	LinkedTransferQueue q = populatedQueue(SIZE);
811	<	try {
812	<	q.drainTo(null, SIZE);
813	<	shouldThrow();
814	<	} catch (NullPointerException success) {}
815	<	}
816	<
817	<	/**
818	<	* drainTo(this, n) throws IllegalArgumentException
819	<	*/
820	<	public void testDrainToSelfN() {
821	<	LinkedTransferQueue q = populatedQueue(SIZE);
822	<	try {
823	<	q.drainTo(q, SIZE);
824	<	shouldThrow();
825	<	} catch (IllegalArgumentException success) {}
826	<	}
827	<
828	<	/**
829	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
683	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
684		*/
685		public void testDrainToN() {
686		LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 837 | 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);
844	<	}
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 853 | 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	<	void realRun() throws InterruptedException {
715	<	Thread.sleep(SMALL_DELAY_MS);
716	<	threadAssertTrue(q.hasWaitingConsumer());
717	<	threadAssertEquals(q.getWaitingConsumerCount(), 1);
718	<	threadAssertTrue(q.offer(new Object()));
865	<	threadAssertFalse(q.hasWaitingConsumer());
866	<	threadAssertEquals(q.getWaitingConsumerCount(), 0);
714	>	public void realRun() throws InterruptedException {
715	>	threadStarted.countDown();
716	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
717	>	assertEquals(0, q.getWaitingConsumerCount());
718	>	assertFalse(q.hasWaitingConsumer());
719		}});
720
721	<	assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) != null);
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 890 | 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	<	void realRun() throws InterruptedException {
755	<	q.transfer(SIZE);
756	<	threadAssertTrue(q.isEmpty());
754	>	public void realRun() throws InterruptedException {
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 912 | Line 773 | public class LinkedTransferQueueTest ext
773		= new LinkedTransferQueue<Integer>();
774
775		Thread first = newStartedThread(new CheckedRunnable() {
776	<	void realRun() throws InterruptedException {
777	<	Integer i = SIZE + 1;
778	<	q.transfer(i);
779	<	threadAssertTrue(!q.contains(i));
919	<	threadAssertEquals(1, q.size());
776	>	public void realRun() throws InterruptedException {
777	>	q.transfer(four);
778	>	assertTrue(!q.contains(four));
779	>	assertEquals(1, q.size());
780		}});
781
782		Thread interruptedThread = newStartedThread(
783		new CheckedInterruptedRunnable() {
784	<	void realRun() throws InterruptedException {
785	<	while (q.size() == 0)
784	>	public void realRun() throws InterruptedException {
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());
939	<	assertTrue(q.isEmpty());
798	>	checkEmpty(q);
799		}
800
801		/**
#	Line 947 | Line 806 | public class LinkedTransferQueueTest ext
806		final LinkedTransferQueue q = new LinkedTransferQueue();
807
808		Thread t = newStartedThread(new CheckedRunnable() {
809	<	void realRun() throws InterruptedException {
809	>	public void realRun() throws InterruptedException {
810		q.transfer(four);
811	<	threadAssertFalse(q.contains(four));
812	<	threadAssertEquals(three, q.poll());
811	>	assertFalse(q.contains(four));
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	<	assertEquals(four, q.poll());
821	<	t.join();
820	>	assertSame(four, q.poll());
821	>	awaitTermination(t, MEDIUM_DELAY_MS);
822		}
823
824		/**
#	Line 968 | Line 830 | public class LinkedTransferQueueTest ext
830		= new LinkedTransferQueue<Integer>();
831
832		Thread t = newStartedThread(new CheckedRunnable() {
833	<	void realRun() throws InterruptedException {
834	<	q.transfer(SIZE);
833	>	public void realRun() throws InterruptedException {
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 1010 | Line 875 | public class LinkedTransferQueueTest ext
875		final LinkedTransferQueue q = new LinkedTransferQueue();
876
877		Thread t = newStartedThread(new CheckedRunnable() {
878	<	void realRun() {
878	>	public void realRun() {
879		while (! q.hasWaitingConsumer())
880		Thread.yield();
881	<	threadAssertTrue(q.hasWaitingConsumer());
882	<	threadAssertTrue(q.isEmpty());
883	<	threadAssertTrue(q.size() == 0);
1019	<	threadAssertTrue(q.tryTransfer(hotPotato));
881	>	assertTrue(q.hasWaitingConsumer());
882	>	checkEmpty(q);
883	>	assertTrue(q.tryTransfer(hotPotato));
884		}});
885
886	<	assertTrue(q.poll(MEDIUM_DELAY_MS, MILLISECONDS) == hotPotato);
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 1033 | Line 897 | public class LinkedTransferQueueTest ext
897		final LinkedTransferQueue q = new LinkedTransferQueue();
898
899		Thread t = newStartedThread(new CheckedRunnable() {
900	<	void realRun() {
900	>	public void realRun() {
901		while (! q.hasWaitingConsumer())
902		Thread.yield();
903	<	threadAssertTrue(q.hasWaitingConsumer());
904	<	threadAssertTrue(q.isEmpty());
905	<	threadAssertTrue(q.size() == 0);
1042	<	threadAssertTrue(q.tryTransfer(hotPotato));
903	>	assertTrue(q.hasWaitingConsumer());
904	>	checkEmpty(q);
905	>	assertTrue(q.tryTransfer(hotPotato));
906		}});
907
908	<	assertTrue(q.take() == hotPotato);
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
1052	<	* 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() {
922	<	void realRun() throws InterruptedException {
923	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
921	>	Thread t = newStartedThread(new CheckedRunnable() {
922	>	public void realRun() throws InterruptedException {
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();
950
951		Thread t = newStartedThread(new CheckedRunnable() {
952	<	void realRun() throws InterruptedException {
953	<	threadAssertFalse
954	<	(q.tryTransfer(new Object(),
955	<	SHORT_DELAY_MS, MILLISECONDS));
952	>	public void realRun() throws InterruptedException {
953	>	long t0 = System.nanoTime();
954	>	assertFalse(q.tryTransfer(new Object(),
955	>	timeoutMillis(), MILLISECONDS));
956	>	assertTrue(millisElapsedSince(t0) >= timeoutMillis());
957	>	checkEmpty(q);
958		}});
959
960	<	Thread.sleep(SMALL_DELAY_MS);
960	>	awaitTermination(t);
961		checkEmpty(q);
1082	–	t.join();
962		}
963
964		/**
#	Line 1091 | Line 970 | public class LinkedTransferQueueTest ext
970		assertTrue(q.offer(four));
971
972		Thread t = newStartedThread(new CheckedRunnable() {
973	<	void realRun() throws InterruptedException {
974	<	threadAssertTrue(q.tryTransfer(five,
975	<	MEDIUM_DELAY_MS, MILLISECONDS));
1097	<	threadAssertTrue(q.isEmpty());
973	>	public void realRun() throws InterruptedException {
974	>	assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
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	<	assertEquals(four, q.poll());
982	<	assertEquals(five, q.poll());
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	<	assertEquals(four, q.poll());
999	>	assertSame(four, q.poll());
1000		assertNull(q.poll());
1001		checkEmpty(q);
1002		}
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 1131 | 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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