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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.14 by jsr166, Sat Aug 15 03:20:36 2009 UTC vs.
Revision 1.55 by jsr166, Wed Dec 31 19:05:43 2014 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include John Vint
6		*/
7
8	<	import java.io.BufferedInputStream;
9	<	import java.io.BufferedOutputStream;
10	<	import java.io.ByteArrayInputStream;
11	<	import java.io.ByteArrayOutputStream;
12	<	import java.io.ObjectInputStream;
13	<	import java.io.ObjectOutputStream;
8	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
9	>
10		import java.util.ArrayList;
11		import java.util.Arrays;
12	+	import java.util.Collection;
13		import java.util.Iterator;
14		import java.util.List;
15		import java.util.NoSuchElementException;
16	<	import java.util.concurrent.*;
17	<	import static java.util.concurrent.TimeUnit.MILLISECONDS;
16	>	import java.util.Queue;
17	>	import java.util.concurrent.BlockingQueue;
18	>	import java.util.concurrent.CountDownLatch;
19	>	import java.util.concurrent.Executors;
20	>	import java.util.concurrent.ExecutorService;
21	>	import java.util.concurrent.LinkedTransferQueue;
22	>
23		import junit.framework.Test;
22	–	import junit.framework.TestSuite;
24
25		@SuppressWarnings({"unchecked", "rawtypes"})
26		public class LinkedTransferQueueTest extends JSR166TestCase {
27
28	+	public static class Generic extends BlockingQueueTest {
29	+	protected BlockingQueue emptyCollection() {
30	+	return new LinkedTransferQueue();
31	+	}
32	+	}
33	+
34		public static void main(String[] args) {
35		junit.textui.TestRunner.run(suite());
36		}
37
38		public static Test suite() {
39	<	return new TestSuite(LinkedTransferQueueTest.class);
40	<	}
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	<	}
49	<	try {
50	<	q.iterator().next();
51	<	shouldThrow();
52	<	} catch (NoSuchElementException success) {
53	<	}
54	<	try {
55	<	q.remove();
56	<	shouldThrow();
57	<	} catch (NoSuchElementException success) {
58	<	}
39	>	return newTestSuite(LinkedTransferQueueTest.class,
40	>	new Generic().testSuite());
41		}
42
43		/**
#	Line 75 | Line 57 | public class LinkedTransferQueueTest ext
57		try {
58		new LinkedTransferQueue(null);
59		shouldThrow();
60	<	} catch (NullPointerException success) {
79	<	}
60	>	} catch (NullPointerException success) {}
61		}
62
63		/**
#	Line 84 | Line 65 | public class LinkedTransferQueueTest ext
65		* NullPointerException
66		*/
67		public void testConstructor3() {
68	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
69		try {
70	<	Integer[] ints = new Integer[SIZE];
89	<	new LinkedTransferQueue(Arrays.asList(ints));
70	>	new LinkedTransferQueue(elements);
71		shouldThrow();
72	<	} catch (NullPointerException success) {
92	<	}
72	>	} catch (NullPointerException success) {}
73		}
74
75		/**
#	Line 97 | Line 77 | public class LinkedTransferQueueTest ext
77		* throws NullPointerException
78		*/
79		public void testConstructor4() {
80	+	Integer[] ints = new Integer[SIZE];
81	+	for (int i = 0; i < SIZE-1; ++i)
82	+	ints[i] = i;
83	+	Collection<Integer> elements = Arrays.asList(ints);
84		try {
85	<	Integer[] ints = new Integer[SIZE];
102	<	for (int i = 0; i < SIZE - 1; ++i) {
103	<	ints[i] = i;
104	<	}
105	<	new LinkedTransferQueue(Arrays.asList(ints));
85	>	new LinkedTransferQueue(elements);
86		shouldThrow();
87	<	} catch (NullPointerException success) {
108	<	}
87	>	} catch (NullPointerException success) {}
88		}
89
90		/**
#	Line 150 | Line 129 | public class LinkedTransferQueueTest ext
129		}
130
131		/**
153	–	* offer(null) throws NullPointerException
154	–	*/
155	–	public void testOfferNull() {
156	–	try {
157	–	LinkedTransferQueue q = new LinkedTransferQueue();
158	–	q.offer(null);
159	–	shouldThrow();
160	–	} catch (NullPointerException success) {
161	–	}
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	–	/**
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	–
188	–	/**
132		* addAll(this) throws IllegalArgumentException
133		*/
134		public void testAddAllSelf() {
#	Line 193 | Line 136 | public class LinkedTransferQueueTest ext
136		LinkedTransferQueue q = populatedQueue(SIZE);
137		q.addAll(q);
138		shouldThrow();
139	<	} catch (IllegalArgumentException success) {
197	<	}
198	<	}
199	<
200	<	/**
201	<	* addAll of a collection with null elements throws NullPointerException
202	<	*/
203	<	public void testAddAll2() {
204	<	try {
205	<	LinkedTransferQueue q = new LinkedTransferQueue();
206	<	Integer[] ints = new Integer[SIZE];
207	<	q.addAll(Arrays.asList(ints));
208	<	shouldThrow();
209	<	} catch (NullPointerException success) {
210	<	}
139	>	} catch (IllegalArgumentException success) {}
140		}
141
142		/**
#	Line 223 | Line 152 | public class LinkedTransferQueueTest ext
152		}
153		q.addAll(Arrays.asList(ints));
154		shouldThrow();
155	<	} catch (NullPointerException success) {
227	<	}
155	>	} catch (NullPointerException success) {}
156		}
157
158		/**
#	Line 245 | Line 173 | public class LinkedTransferQueueTest ext
173		}
174
175		/**
248	–	* put(null) throws NullPointerException
249	–	*/
250	–	public void testPutNull() throws InterruptedException {
251	–	try {
252	–	LinkedTransferQueue q = new LinkedTransferQueue();
253	–	q.put(null);
254	–	shouldThrow();
255	–	} catch (NullPointerException success) {}
256	–	}
257	–
258	–	/**
176		* all elements successfully put are contained
177		*/
178		public void testPut() {
179		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
180		for (int i = 0; i < SIZE; ++i) {
181	<	assertEquals(q.size(), i);
181	>	assertEquals(i, q.size());
182		q.put(i);
183		assertTrue(q.contains(i));
184		}
#	Line 278 | Line 195 | public class LinkedTransferQueueTest ext
195		}
196
197		/**
198	<	* take blocks interruptibly when empty
282	<	*/
283	<	public void testTakeFromEmpty() throws InterruptedException {
284	<	final LinkedTransferQueue q = new LinkedTransferQueue();
285	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
286	<	void realRun() throws InterruptedException {
287	<	q.take();
288	<	}});
289	<	Thread.sleep(SHORT_DELAY_MS);
290	<	t.interrupt();
291	<	t.join();
292	<	}
293	<
294	<	/**
295	<	* Take removes existing elements until empty, then blocks interruptibly
198	>	* take removes existing elements until empty, then blocks interruptibly
199		*/
200		public void testBlockingTake() throws InterruptedException {
201	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
202	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
203	<	void realRun() throws InterruptedException {
201	>	final BlockingQueue q = populatedQueue(SIZE);
202	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
203	>	Thread t = newStartedThread(new CheckedRunnable() {
204	>	public void realRun() throws InterruptedException {
205		for (int i = 0; i < SIZE; ++i) {
206	<	threadAssertEquals(i, (int) q.take());
206	>	assertEquals(i, q.take());
207		}
208	<	q.take();
208	>
209	>	Thread.currentThread().interrupt();
210	>	try {
211	>	q.take();
212	>	shouldThrow();
213	>	} catch (InterruptedException success) {}
214	>	assertFalse(Thread.interrupted());
215	>
216	>	pleaseInterrupt.countDown();
217	>	try {
218	>	q.take();
219	>	shouldThrow();
220	>	} catch (InterruptedException success) {}
221	>	assertFalse(Thread.interrupted());
222		}});
223	<	Thread.sleep(SMALL_DELAY_MS);
223	>
224	>	await(pleaseInterrupt);
225	>	assertThreadStaysAlive(t);
226		t.interrupt();
227	<	t.join();
309	<	checkEmpty(q);
227	>	awaitTermination(t);
228		}
229
230		/**
#	Line 322 | Line 240 | public class LinkedTransferQueueTest ext
240		}
241
242		/**
243	<	* timed pool with zero timeout succeeds when non-empty, else times out
243	>	* timed poll with zero timeout succeeds when non-empty, else times out
244		*/
245		public void testTimedPoll0() throws InterruptedException {
246		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
#	Line 334 | Line 252 | public class LinkedTransferQueueTest ext
252		}
253
254		/**
255	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
255	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
256		*/
257		public void testTimedPoll() throws InterruptedException {
258		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
259		for (int i = 0; i < SIZE; ++i) {
260	<	long t0 = System.nanoTime();
260	>	long startTime = System.nanoTime();
261		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
262	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
345	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
262	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
263		}
264	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
264	>	long startTime = System.nanoTime();
265	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
266	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
267		checkEmpty(q);
268		}
269
#	Line 353 | Line 272 | public class LinkedTransferQueueTest ext
272		* returning timeout status
273		*/
274		public void testInterruptedTimedPoll() throws InterruptedException {
275	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
276	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
277	<	void realRun() throws InterruptedException {
275	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
276	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
277	>	Thread t = newStartedThread(new CheckedRunnable() {
278	>	public void realRun() throws InterruptedException {
279		for (int i = 0; i < SIZE; ++i) {
280		long t0 = System.nanoTime();
281	<	threadAssertEquals(i, (int) q.poll(LONG_DELAY_MS,
282	<	MILLISECONDS));
283	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
284	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
281	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
282	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
283	>	}
284	>	long t0 = System.nanoTime();
285	>	aboutToWait.countDown();
286	>	try {
287	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
288	>	shouldThrow();
289	>	} catch (InterruptedException success) {
290	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
291		}
366	–	q.poll(LONG_DELAY_MS, MILLISECONDS);
292		}});
293	<	Thread.sleep(SMALL_DELAY_MS);
293	>
294	>	aboutToWait.await();
295	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
296		t.interrupt();
297	<	t.join();
297	>	awaitTermination(t, MEDIUM_DELAY_MS);
298		checkEmpty(q);
299		}
300
301		/**
302	<	* timed poll before a delayed offer fails; after offer succeeds;
303	<	* on interruption throws
302	>	* timed poll after thread interrupted throws InterruptedException
303	>	* instead of returning timeout status
304		*/
305	<	public void testTimedPollWithOffer() throws InterruptedException {
306	<	final LinkedTransferQueue q = new LinkedTransferQueue();
307	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
308	<	void realRun() throws InterruptedException {
309	<	threadAssertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
310	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
311	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
305	>	public void testTimedPollAfterInterrupt() throws InterruptedException {
306	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
307	>	Thread t = newStartedThread(new CheckedRunnable() {
308	>	public void realRun() throws InterruptedException {
309	>	Thread.currentThread().interrupt();
310	>	for (int i = 0; i < SIZE; ++i) {
311	>	long t0 = System.nanoTime();
312	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
313	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
314	>	}
315	>	try {
316	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
317	>	shouldThrow();
318	>	} catch (InterruptedException success) {}
319		}});
320	<	Thread.sleep(SMALL_DELAY_MS);
321	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
322	<	t.interrupt();
389	<	t.join();
320	>
321	>	awaitTermination(t, MEDIUM_DELAY_MS);
322	>	checkEmpty(q);
323		}
324
325		/**
#	Line 416 | Line 349 | public class LinkedTransferQueueTest ext
349		try {
350		q.element();
351		shouldThrow();
352	<	} catch (NoSuchElementException success) {
420	<	}
352	>	} catch (NoSuchElementException success) {}
353		checkEmpty(q);
354		}
355
#	Line 432 | Line 364 | public class LinkedTransferQueueTest ext
364		try {
365		q.remove();
366		shouldThrow();
367	<	} catch (NoSuchElementException success) {
436	<	}
437	<	checkEmpty(q);
438	<	}
439	<
440	<	/**
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	<	}
367	>	} catch (NoSuchElementException success) {}
368		checkEmpty(q);
369		}
370
#	Line 462 | Line 378 | public class LinkedTransferQueueTest ext
378		assertTrue(q.remove(one));
379		assertTrue(q.remove(two));
380		assertTrue(q.add(three));
381	<	assertTrue(q.take() == three);
381	>	assertSame(q.take(), three);
382		}
383
384		/**
#	Line 544 | Line 460 | public class LinkedTransferQueueTest ext
460		}
461
462		/**
463	<	* toArray() contains all elements
463	>	* toArray() contains all elements in FIFO order
464		*/
465	<	public void testToArray() throws InterruptedException {
465	>	public void testToArray() {
466		LinkedTransferQueue q = populatedQueue(SIZE);
467		Object[] o = q.toArray();
468		for (int i = 0; i < o.length; i++) {
469	<	assertEquals(o[i], q.take());
469	>	assertSame(o[i], q.poll());
470		}
471		}
472
473		/**
474	<	* toArray(a) contains all elements
474	>	* toArray(a) contains all elements in FIFO order
475		*/
476	<	public void testToArray2() throws InterruptedException {
476	>	public void testToArray2() {
477		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
478		Integer[] ints = new Integer[SIZE];
479	<	ints = q.toArray(ints);
479	>	Integer[] array = q.toArray(ints);
480	>	assertSame(ints, array);
481		for (int i = 0; i < ints.length; i++) {
482	<	assertEquals(ints[i], q.take());
566	<	}
567	<	}
568	<
569	<	/**
570	<	* toArray(null) throws NullPointerException
571	<	*/
572	<	public void testToArray_BadArg() {
573	<	try {
574	<	LinkedTransferQueue q = populatedQueue(SIZE);
575	<	Object o[] = q.toArray(null);
576	<	shouldThrow();
577	<	} catch (NullPointerException success) {
482	>	assertSame(ints[i], q.poll());
483		}
484		}
485
486		/**
487	<	* toArray(incompatible array type) throws CCE
487	>	* toArray(incompatible array type) throws ArrayStoreException
488		*/
489		public void testToArray1_BadArg() {
490	+	LinkedTransferQueue q = populatedQueue(SIZE);
491		try {
492	<	LinkedTransferQueue q = populatedQueue(SIZE);
587	<	Object o[] = q.toArray(new String[10]);
492	>	q.toArray(new String[10]);
493		shouldThrow();
494	<	} catch (ArrayStoreException success) {
590	<	}
494	>	} catch (ArrayStoreException success) {}
495		}
496
497		/**
#	Line 617 | Line 521 | public class LinkedTransferQueueTest ext
521		it.remove();
522
523		it = q.iterator();
524	<	assertEquals(it.next(), one);
525	<	assertEquals(it.next(), three);
524	>	assertSame(it.next(), one);
525	>	assertSame(it.next(), three);
526		assertFalse(it.hasNext());
527		}
528
#	Line 662 | Line 566 | public class LinkedTransferQueueTest ext
566		LinkedTransferQueue q = populatedQueue(SIZE);
567		String s = q.toString();
568		for (int i = 0; i < SIZE; ++i) {
569	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
569	>	assertTrue(s.contains(String.valueOf(i)));
570		}
571		}
572
#	Line 671 | Line 575 | public class LinkedTransferQueueTest ext
575		*/
576		public void testOfferInExecutor() {
577		final LinkedTransferQueue q = new LinkedTransferQueue();
578	<	q.add(one);
675	<	q.add(two);
578	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
579		ExecutorService executor = Executors.newFixedThreadPool(2);
580
581		executor.execute(new CheckedRunnable() {
582	<	void realRun() {
583	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS,
584	<	MILLISECONDS));
582	>	public void realRun() throws InterruptedException {
583	>	threadsStarted.await();
584	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
585		}});
586
587		executor.execute(new CheckedRunnable() {
588	<	void realRun() throws InterruptedException {
589	<	Thread.sleep(SMALL_DELAY_MS);
590	<	threadAssertEquals(one, q.take());
588	>	public void realRun() throws InterruptedException {
589	>	threadsStarted.await();
590	>	assertSame(one, q.take());
591	>	checkEmpty(q);
592		}});
593
594		joinPool(executor);
#	Line 695 | Line 599 | public class LinkedTransferQueueTest ext
599		*/
600		public void testPollInExecutor() {
601		final LinkedTransferQueue q = new LinkedTransferQueue();
602	+	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
603		ExecutorService executor = Executors.newFixedThreadPool(2);
604
605		executor.execute(new CheckedRunnable() {
606	<	void realRun() throws InterruptedException {
607	<	threadAssertNull(q.poll());
608	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS,
609	<	MILLISECONDS));
610	<	threadAssertTrue(q.isEmpty());
606	>	public void realRun() throws InterruptedException {
607	>	assertNull(q.poll());
608	>	threadsStarted.await();
609	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
610	>	checkEmpty(q);
611		}});
612
613		executor.execute(new CheckedRunnable() {
614	<	void realRun() throws InterruptedException {
615	<	Thread.sleep(SMALL_DELAY_MS);
614	>	public void realRun() throws InterruptedException {
615	>	threadsStarted.await();
616		q.put(one);
617		}});
618
#	Line 718 | Line 623 | public class LinkedTransferQueueTest ext
623		* A deserialized serialized queue has same elements in same order
624		*/
625		public void testSerialization() throws Exception {
626	<	LinkedTransferQueue q = populatedQueue(SIZE);
627	<
723	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
724	<	ObjectOutputStream out
725	<	= new ObjectOutputStream(new BufferedOutputStream(bout));
726	<	out.writeObject(q);
727	<	out.close();
728	<
729	<	ByteArrayInputStream bin
730	<	= new ByteArrayInputStream(bout.toByteArray());
731	<	ObjectInputStream in
732	<	= new ObjectInputStream(new BufferedInputStream(bin));
733	<	LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
734	<
735	<	assertEquals(q.size(), r.size());
736	<	while (!q.isEmpty()) {
737	<	assertEquals(q.remove(), r.remove());
738	<	}
739	<	}
740	<
741	<	/**
742	<	* drainTo(null) throws NullPointerException
743	<	*/
744	<	public void testDrainToNull() {
745	<	LinkedTransferQueue q = populatedQueue(SIZE);
746	<	try {
747	<	q.drainTo(null);
748	<	shouldThrow();
749	<	} catch (NullPointerException success) {
750	<	}
751	<	}
626	>	Queue x = populatedQueue(SIZE);
627	>	Queue y = serialClone(x);
628
629	<	/**
630	<	* drainTo(this) throws IllegalArgumentException
631	<	*/
632	<	public void testDrainToSelf() {
633	<	LinkedTransferQueue q = populatedQueue(SIZE);
634	<	try {
635	<	q.drainTo(q);
760	<	shouldThrow();
761	<	} catch (IllegalArgumentException success) {
629	>	assertNotSame(y, x);
630	>	assertEquals(x.size(), y.size());
631	>	assertEquals(x.toString(), y.toString());
632	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
633	>	while (!x.isEmpty()) {
634	>	assertFalse(y.isEmpty());
635	>	assertEquals(x.remove(), y.remove());
636		}
637	+	assertTrue(y.isEmpty());
638		}
639
640		/**
#	Line 769 | Line 644 | public class LinkedTransferQueueTest ext
644		LinkedTransferQueue q = populatedQueue(SIZE);
645		ArrayList l = new ArrayList();
646		q.drainTo(l);
647	<	assertEquals(q.size(), 0);
648	<	assertEquals(l.size(), SIZE);
647	>	assertEquals(0, q.size());
648	>	assertEquals(SIZE, l.size());
649		for (int i = 0; i < SIZE; ++i) {
650	<	assertEquals(l.get(i), i);
650	>	assertEquals(i, l.get(i));
651		}
652		q.add(zero);
653		q.add(one);
#	Line 781 | Line 656 | public class LinkedTransferQueueTest ext
656		assertTrue(q.contains(one));
657		l.clear();
658		q.drainTo(l);
659	<	assertEquals(q.size(), 0);
660	<	assertEquals(l.size(), 2);
659	>	assertEquals(0, q.size());
660	>	assertEquals(2, l.size());
661		for (int i = 0; i < 2; ++i) {
662	<	assertEquals(l.get(i), i);
662	>	assertEquals(i, l.get(i));
663		}
664		}
665
#	Line 794 | Line 669 | public class LinkedTransferQueueTest ext
669		public void testDrainToWithActivePut() throws InterruptedException {
670		final LinkedTransferQueue q = populatedQueue(SIZE);
671		Thread t = newStartedThread(new CheckedRunnable() {
672	<	void realRun() {
672	>	public void realRun() {
673		q.put(SIZE + 1);
674		}});
675		ArrayList l = new ArrayList();
676		q.drainTo(l);
677		assertTrue(l.size() >= SIZE);
678	<	for (int i = 0; i < SIZE; ++i) {
679	<	assertEquals(l.get(i), i);
680	<	}
806	<	t.join();
678	>	for (int i = 0; i < SIZE; ++i)
679	>	assertEquals(i, l.get(i));
680	>	awaitTermination(t, MEDIUM_DELAY_MS);
681		assertTrue(q.size() + l.size() >= SIZE);
682		}
683
684		/**
685	<	* drainTo(null, n) throws NullPointerException
812	<	*/
813	<	public void testDrainToNullN() {
814	<	LinkedTransferQueue q = populatedQueue(SIZE);
815	<	try {
816	<	q.drainTo(null, SIZE);
817	<	shouldThrow();
818	<	} catch (NullPointerException success) {
819	<	}
820	<	}
821	<
822	<	/**
823	<	* drainTo(this, n) throws IllegalArgumentException
824	<	*/
825	<	public void testDrainToSelfN() {
826	<	LinkedTransferQueue q = populatedQueue(SIZE);
827	<	try {
828	<	q.drainTo(q, SIZE);
829	<	shouldThrow();
830	<	} catch (IllegalArgumentException success) {
831	<	}
832	<	}
833	<
834	<	/**
835	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
685	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
686		*/
687		public void testDrainToN() {
688		LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 843 | Line 693 | public class LinkedTransferQueueTest ext
693		ArrayList l = new ArrayList();
694		q.drainTo(l, i);
695		int k = (i < SIZE) ? i : SIZE;
696	<	assertEquals(l.size(), k);
697	<	assertEquals(q.size(), SIZE - k);
698	<	for (int j = 0; j < k; ++j) {
699	<	assertEquals(l.get(j), j);
850	<	}
696	>	assertEquals(k, l.size());
697	>	assertEquals(SIZE - k, q.size());
698	>	for (int j = 0; j < k; ++j)
699	>	assertEquals(j, l.get(j));
700		while (q.poll() != null)
701		;
702		}
#	Line 859 | Line 708 | public class LinkedTransferQueueTest ext
708		*/
709		public void testWaitingConsumer() throws InterruptedException {
710		final LinkedTransferQueue q = new LinkedTransferQueue();
711	<	assertEquals(q.getWaitingConsumerCount(), 0);
711	>	assertEquals(0, q.getWaitingConsumerCount());
712		assertFalse(q.hasWaitingConsumer());
713	+	final CountDownLatch threadStarted = new CountDownLatch(1);
714
715		Thread t = newStartedThread(new CheckedRunnable() {
716	<	void realRun() throws InterruptedException {
717	<	Thread.sleep(SMALL_DELAY_MS);
718	<	threadAssertTrue(q.hasWaitingConsumer());
719	<	threadAssertEquals(q.getWaitingConsumerCount(), 1);
720	<	threadAssertTrue(q.offer(new Object()));
871	<	threadAssertFalse(q.hasWaitingConsumer());
872	<	threadAssertEquals(q.getWaitingConsumerCount(), 0);
716	>	public void realRun() throws InterruptedException {
717	>	threadStarted.countDown();
718	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
719	>	assertEquals(0, q.getWaitingConsumerCount());
720	>	assertFalse(q.hasWaitingConsumer());
721		}});
722
723	<	assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) != null);
724	<	assertEquals(q.getWaitingConsumerCount(), 0);
723	>	threadStarted.await();
724	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
725	>	assertEquals(1, q.getWaitingConsumerCount());
726	>	assertTrue(q.hasWaitingConsumer());
727	>
728	>	assertTrue(q.offer(one));
729	>	assertEquals(0, q.getWaitingConsumerCount());
730		assertFalse(q.hasWaitingConsumer());
731	<	t.join();
731	>
732	>	awaitTermination(t, MEDIUM_DELAY_MS);
733		}
734
735		/**
#	Line 886 | Line 740 | public class LinkedTransferQueueTest ext
740		LinkedTransferQueue q = new LinkedTransferQueue();
741		q.transfer(null);
742		shouldThrow();
743	<	} catch (NullPointerException ex) {
890	<	}
743	>	} catch (NullPointerException success) {}
744		}
745
746		/**
#	Line 897 | Line 750 | public class LinkedTransferQueueTest ext
750		public void testTransfer2() throws InterruptedException {
751		final LinkedTransferQueue<Integer> q
752		= new LinkedTransferQueue<Integer>();
753	+	final CountDownLatch threadStarted = new CountDownLatch(1);
754
755		Thread t = newStartedThread(new CheckedRunnable() {
756	<	void realRun() throws InterruptedException {
757	<	q.transfer(SIZE);
758	<	threadAssertTrue(q.isEmpty());
756	>	public void realRun() throws InterruptedException {
757	>	threadStarted.countDown();
758	>	q.transfer(five);
759	>	checkEmpty(q);
760		}});
761
762	<	Thread.sleep(SHORT_DELAY_MS);
762	>	threadStarted.await();
763	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
764		assertEquals(1, q.size());
765	<	assertEquals(SIZE, (int) q.poll());
766	<	assertTrue(q.isEmpty());
767	<	t.join();
765	>	assertSame(five, q.poll());
766	>	checkEmpty(q);
767	>	awaitTermination(t, MEDIUM_DELAY_MS);
768		}
769
770		/**
#	Line 919 | Line 775 | public class LinkedTransferQueueTest ext
775		= new LinkedTransferQueue<Integer>();
776
777		Thread first = newStartedThread(new CheckedRunnable() {
778	<	void realRun() throws InterruptedException {
779	<	Integer i = SIZE + 1;
780	<	q.transfer(i);
781	<	threadAssertTrue(!q.contains(i));
926	<	threadAssertEquals(1, q.size());
778	>	public void realRun() throws InterruptedException {
779	>	q.transfer(four);
780	>	assertTrue(!q.contains(four));
781	>	assertEquals(1, q.size());
782		}});
783
784		Thread interruptedThread = newStartedThread(
785		new CheckedInterruptedRunnable() {
786	<	void realRun() throws InterruptedException {
787	<	while (q.size() == 0)
786	>	public void realRun() throws InterruptedException {
787	>	while (q.isEmpty())
788		Thread.yield();
789	<	q.transfer(SIZE);
789	>	q.transfer(five);
790		}});
791
792		while (q.size() < 2)
793		Thread.yield();
794		assertEquals(2, q.size());
795	<	assertEquals(SIZE + 1, (int) q.poll());
795	>	assertSame(four, q.poll());
796		first.join();
797		assertEquals(1, q.size());
798		interruptedThread.interrupt();
799		interruptedThread.join();
800	<	assertEquals(0, q.size());
946	<	assertTrue(q.isEmpty());
800	>	checkEmpty(q);
801		}
802
803		/**
#	Line 954 | Line 808 | public class LinkedTransferQueueTest ext
808		final LinkedTransferQueue q = new LinkedTransferQueue();
809
810		Thread t = newStartedThread(new CheckedRunnable() {
811	<	void realRun() throws InterruptedException {
811	>	public void realRun() throws InterruptedException {
812		q.transfer(four);
813	<	threadAssertFalse(q.contains(four));
814	<	threadAssertEquals(three, q.poll());
813	>	assertFalse(q.contains(four));
814	>	assertSame(three, q.poll());
815		}});
816
817	<	Thread.sleep(SHORT_DELAY_MS);
817	>	while (q.isEmpty())
818	>	Thread.yield();
819	>	assertFalse(q.isEmpty());
820	>	assertEquals(1, q.size());
821		assertTrue(q.offer(three));
822	<	assertEquals(four, q.poll());
823	<	t.join();
822	>	assertSame(four, q.poll());
823	>	awaitTermination(t, MEDIUM_DELAY_MS);
824		}
825
826		/**
#	Line 975 | Line 832 | public class LinkedTransferQueueTest ext
832		= new LinkedTransferQueue<Integer>();
833
834		Thread t = newStartedThread(new CheckedRunnable() {
835	<	void realRun() throws InterruptedException {
836	<	q.transfer(SIZE);
835	>	public void realRun() throws InterruptedException {
836	>	q.transfer(four);
837		checkEmpty(q);
838		}});
839
840	<	Thread.sleep(SHORT_DELAY_MS);
841	<	assertEquals(SIZE, (int) q.take());
840	>	while (q.isEmpty())
841	>	Thread.yield();
842	>	assertFalse(q.isEmpty());
843	>	assertEquals(1, q.size());
844	>	assertSame(four, q.take());
845		checkEmpty(q);
846	<	t.join();
846	>	awaitTermination(t, MEDIUM_DELAY_MS);
847		}
848
849		/**
#	Line 994 | Line 854 | public class LinkedTransferQueueTest ext
854		final LinkedTransferQueue q = new LinkedTransferQueue();
855		q.tryTransfer(null);
856		shouldThrow();
857	<	} catch (NullPointerException ex) {
998	<	}
857	>	} catch (NullPointerException success) {}
858		}
859
860		/**
#	Line 1018 | Line 877 | public class LinkedTransferQueueTest ext
877		final LinkedTransferQueue q = new LinkedTransferQueue();
878
879		Thread t = newStartedThread(new CheckedRunnable() {
880	<	void realRun() {
880	>	public void realRun() {
881		while (! q.hasWaitingConsumer())
882		Thread.yield();
883	<	threadAssertTrue(q.hasWaitingConsumer());
884	<	threadAssertTrue(q.isEmpty());
885	<	threadAssertTrue(q.size() == 0);
1027	<	threadAssertTrue(q.tryTransfer(hotPotato));
883	>	assertTrue(q.hasWaitingConsumer());
884	>	checkEmpty(q);
885	>	assertTrue(q.tryTransfer(hotPotato));
886		}});
887
888	<	assertTrue(q.poll(MEDIUM_DELAY_MS, MILLISECONDS) == hotPotato);
888	>	assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
889		checkEmpty(q);
890	<	t.join();
890	>	awaitTermination(t, MEDIUM_DELAY_MS);
891		}
892
893		/**
#	Line 1041 | Line 899 | public class LinkedTransferQueueTest ext
899		final LinkedTransferQueue q = new LinkedTransferQueue();
900
901		Thread t = newStartedThread(new CheckedRunnable() {
902	<	void realRun() {
902	>	public void realRun() {
903		while (! q.hasWaitingConsumer())
904		Thread.yield();
905	<	threadAssertTrue(q.hasWaitingConsumer());
906	<	threadAssertTrue(q.isEmpty());
907	<	threadAssertTrue(q.size() == 0);
1050	<	threadAssertTrue(q.tryTransfer(hotPotato));
905	>	assertTrue(q.hasWaitingConsumer());
906	>	checkEmpty(q);
907	>	assertTrue(q.tryTransfer(hotPotato));
908		}});
909
910	<	assertTrue(q.take() == hotPotato);
910	>	assertSame(q.take(), hotPotato);
911		checkEmpty(q);
912	<	t.join();
912	>	awaitTermination(t, MEDIUM_DELAY_MS);
913		}
914
915		/**
916	<	* tryTransfer waits the amount given if interrupted, and
1060	<	* throws interrupted exception
916	>	* tryTransfer blocks interruptibly if no takers
917		*/
918		public void testTryTransfer5() throws InterruptedException {
919		final LinkedTransferQueue q = new LinkedTransferQueue();
920	+	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
921	+	assertTrue(q.isEmpty());
922
923	<	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
924	<	void realRun() throws InterruptedException {
925	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
923	>	Thread t = newStartedThread(new CheckedRunnable() {
924	>	public void realRun() throws InterruptedException {
925	>	Thread.currentThread().interrupt();
926	>	try {
927	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
928	>	shouldThrow();
929	>	} catch (InterruptedException success) {}
930	>	assertFalse(Thread.interrupted());
931	>
932	>	pleaseInterrupt.countDown();
933	>	try {
934	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
935	>	shouldThrow();
936	>	} catch (InterruptedException success) {}
937	>	assertFalse(Thread.interrupted());
938		}});
939
940	<	Thread.sleep(SMALL_DELAY_MS);
941	<	toInterrupt.interrupt();
942	<	toInterrupt.join();
940	>	await(pleaseInterrupt);
941	>	assertThreadStaysAlive(t);
942	>	t.interrupt();
943	>	awaitTermination(t);
944	>	checkEmpty(q);
945		}
946
947		/**
948	<	* tryTransfer gives up after the timeout and return false
948	>	* tryTransfer gives up after the timeout and returns false
949		*/
950		public void testTryTransfer6() throws InterruptedException {
951		final LinkedTransferQueue q = new LinkedTransferQueue();
952
953		Thread t = newStartedThread(new CheckedRunnable() {
954	<	void realRun() throws InterruptedException {
955	<	threadAssertFalse
956	<	(q.tryTransfer(new Object(),
957	<	SHORT_DELAY_MS, MILLISECONDS));
954	>	public void realRun() throws InterruptedException {
955	>	long t0 = System.nanoTime();
956	>	assertFalse(q.tryTransfer(new Object(),
957	>	timeoutMillis(), MILLISECONDS));
958	>	assertTrue(millisElapsedSince(t0) >= timeoutMillis());
959	>	checkEmpty(q);
960		}});
961
962	<	Thread.sleep(SMALL_DELAY_MS);
962	>	awaitTermination(t);
963		checkEmpty(q);
1090	–	t.join();
964		}
965
966		/**
#	Line 1099 | Line 972 | public class LinkedTransferQueueTest ext
972		assertTrue(q.offer(four));
973
974		Thread t = newStartedThread(new CheckedRunnable() {
975	<	void realRun() throws InterruptedException {
976	<	threadAssertTrue(q.tryTransfer(five,
977	<	MEDIUM_DELAY_MS, MILLISECONDS));
1105	<	threadAssertTrue(q.isEmpty());
975	>	public void realRun() throws InterruptedException {
976	>	assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
977	>	checkEmpty(q);
978		}});
979
980	<	Thread.sleep(SHORT_DELAY_MS);
980	>	while (q.size() != 2)
981	>	Thread.yield();
982		assertEquals(2, q.size());
983	<	assertEquals(four, q.poll());
984	<	assertEquals(five, q.poll());
983	>	assertSame(four, q.poll());
984	>	assertSame(five, q.poll());
985		checkEmpty(q);
986	<	t.join();
986	>	awaitTermination(t, MEDIUM_DELAY_MS);
987		}
988
989		/**
990	<	* tryTransfer attempts to enqueue into the q and fails returning
991	<	* false not enqueueing and the successive poll is null
990	>	* tryTransfer attempts to enqueue into the queue and fails
991	>	* returning false not enqueueing and the successive poll is null
992		*/
993		public void testTryTransfer8() throws InterruptedException {
994		final LinkedTransferQueue q = new LinkedTransferQueue();
995		assertTrue(q.offer(four));
996		assertEquals(1, q.size());
997	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
997	>	long t0 = System.nanoTime();
998	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
999	>	assertTrue(millisElapsedSince(t0) >= timeoutMillis());
1000		assertEquals(1, q.size());
1001	<	assertEquals(four, q.poll());
1001	>	assertSame(four, q.poll());
1002		assertNull(q.poll());
1003		checkEmpty(q);
1004		}
1005
1006		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1007		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1008	<	assertTrue(q.isEmpty());
1008	>	checkEmpty(q);
1009		for (int i = 0; i < n; i++) {
1010		assertEquals(i, q.size());
1011		assertTrue(q.offer(i));
#	Line 1139 | Line 1014 | public class LinkedTransferQueueTest ext
1014		assertFalse(q.isEmpty());
1015		return q;
1016		}
1017	+
1018	+	/**
1019	+	* remove(null), contains(null) always return false
1020	+	*/
1021	+	public void testNeverContainsNull() {
1022	+	Collection<?>[] qs = {
1023	+	new LinkedTransferQueue<Object>(),
1024	+	populatedQueue(2),
1025	+	};
1026	+
1027	+	for (Collection<?> q : qs) {
1028	+	assertFalse(q.contains(null));
1029	+	assertFalse(q.remove(null));
1030	+	}
1031	+	}
1032		}

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