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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.16 by jsr166, Sat Nov 21 19:11:53 2009 UTC vs.
Revision 1.69 by jsr166, Sat Feb 18 01:17:06 2017 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	+	public static class Generic extends BlockingQueueTest {
28	+	protected BlockingQueue emptyCollection() {
29	+	return new LinkedTransferQueue();
30	+	}
31	+	}
32
33		public static void main(String[] args) {
34	<	junit.textui.TestRunner.run(suite());
34	>	main(suite(), args);
35		}
36
37		public static Test suite() {
38	<	return new TestSuite(LinkedTransferQueueTest.class);
39	<	}
40	<
41	<	void checkEmpty(LinkedTransferQueue q) throws InterruptedException {
42	<	assertTrue(q.isEmpty());
43	<	assertEquals(0, q.size());
44	<	assertNull(q.peek());
45	<	assertNull(q.poll());
46	<	assertNull(q.poll(0, MILLISECONDS));
47	<	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	<	}
38	>	class Implementation implements CollectionImplementation {
39	>	public Class<?> klazz() { return LinkedTransferQueue.class; }
40	>	public Collection emptyCollection() { return new LinkedTransferQueue(); }
41	>	public Object makeElement(int i) { return i; }
42	>	public boolean isConcurrent() { return true; }
43	>	public boolean permitsNulls() { return false; }
44	>	}
45	>	return newTestSuite(LinkedTransferQueueTest.class,
46	>	new Generic().testSuite(),
47	>	CollectionTest.testSuite(new Implementation()));
48		}
49
50		/**
#	Line 75 | Line 64 | public class LinkedTransferQueueTest ext
64		try {
65		new LinkedTransferQueue(null);
66		shouldThrow();
67	<	} catch (NullPointerException success) {
79	<	}
67	>	} catch (NullPointerException success) {}
68		}
69
70		/**
#	Line 84 | Line 72 | public class LinkedTransferQueueTest ext
72		* NullPointerException
73		*/
74		public void testConstructor3() {
75	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
76		try {
77	<	Integer[] ints = new Integer[SIZE];
89	<	new LinkedTransferQueue(Arrays.asList(ints));
77	>	new LinkedTransferQueue(elements);
78		shouldThrow();
79	<	} catch (NullPointerException success) {
92	<	}
79	>	} catch (NullPointerException success) {}
80		}
81
82		/**
#	Line 97 | Line 84 | public class LinkedTransferQueueTest ext
84		* throws NullPointerException
85		*/
86		public void testConstructor4() {
87	+	Integer[] ints = new Integer[SIZE];
88	+	for (int i = 0; i < SIZE - 1; ++i)
89	+	ints[i] = i;
90	+	Collection<Integer> elements = Arrays.asList(ints);
91		try {
92	<	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));
92	>	new LinkedTransferQueue(elements);
93		shouldThrow();
94	<	} catch (NullPointerException success) {
108	<	}
94	>	} catch (NullPointerException success) {}
95		}
96
97		/**
#	Line 136 | Line 122 | public class LinkedTransferQueueTest ext
122		* remainingCapacity() always returns Integer.MAX_VALUE
123		*/
124		public void testRemainingCapacity() {
125	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
125	>	BlockingQueue q = populatedQueue(SIZE);
126		for (int i = 0; i < SIZE; ++i) {
127		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
128		assertEquals(SIZE - i, q.size());
129	<	q.remove();
129	>	assertEquals(i, q.remove());
130		}
131		for (int i = 0; i < SIZE; ++i) {
132		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
133		assertEquals(i, q.size());
134	<	q.add(i);
149	<	}
150	<	}
151	<
152	<	/**
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) {
134	>	assertTrue(q.add(i));
135		}
136		}
137
#	Line 189 | Line 139 | public class LinkedTransferQueueTest ext
139		* addAll(this) throws IllegalArgumentException
140		*/
141		public void testAddAllSelf() {
142	+	LinkedTransferQueue q = populatedQueue(SIZE);
143		try {
193	–	LinkedTransferQueue q = populatedQueue(SIZE);
144		q.addAll(q);
145		shouldThrow();
146	<	} 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	<	}
146	>	} catch (IllegalArgumentException success) {}
147		}
148
149		/**
#	Line 215 | Line 151 | public class LinkedTransferQueueTest ext
151		* NullPointerException after possibly adding some elements
152		*/
153		public void testAddAll3() {
154	+	LinkedTransferQueue q = new LinkedTransferQueue();
155	+	Integer[] ints = new Integer[SIZE];
156	+	for (int i = 0; i < SIZE - 1; ++i)
157	+	ints[i] = i;
158		try {
219	–	LinkedTransferQueue q = new LinkedTransferQueue();
220	–	Integer[] ints = new Integer[SIZE];
221	–	for (int i = 0; i < SIZE - 1; ++i) {
222	–	ints[i] = i;
223	–	}
159		q.addAll(Arrays.asList(ints));
160		shouldThrow();
161	<	} catch (NullPointerException success) {
227	<	}
161	>	} catch (NullPointerException success) {}
162		}
163
164		/**
#	Line 245 | Line 179 | public class LinkedTransferQueueTest ext
179		}
180
181		/**
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	–	/**
182		* all elements successfully put are contained
183		*/
184		public void testPut() {
185	<	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
185	>	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
186		for (int i = 0; i < SIZE; ++i) {
187	<	assertEquals(q.size(), i);
187	>	assertEquals(i, q.size());
188		q.put(i);
189		assertTrue(q.contains(i));
190		}
#	Line 278 | Line 201 | public class LinkedTransferQueueTest ext
201		}
202
203		/**
204	<	* 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
204	>	* take removes existing elements until empty, then blocks interruptibly
205		*/
206		public void testBlockingTake() throws InterruptedException {
207	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
208	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
209	<	void realRun() throws InterruptedException {
207	>	final BlockingQueue q = populatedQueue(SIZE);
208	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
209	>	Thread t = newStartedThread(new CheckedRunnable() {
210	>	public void realRun() throws InterruptedException {
211		for (int i = 0; i < SIZE; ++i) {
212	<	threadAssertEquals(i, (int) q.take());
212	>	assertEquals(i, q.take());
213		}
214	<	q.take();
214	>
215	>	Thread.currentThread().interrupt();
216	>	try {
217	>	q.take();
218	>	shouldThrow();
219	>	} catch (InterruptedException success) {}
220	>	assertFalse(Thread.interrupted());
221	>
222	>	pleaseInterrupt.countDown();
223	>	try {
224	>	q.take();
225	>	shouldThrow();
226	>	} catch (InterruptedException success) {}
227	>	assertFalse(Thread.interrupted());
228		}});
229	<	Thread.sleep(SMALL_DELAY_MS);
229	>
230	>	await(pleaseInterrupt);
231	>	assertThreadStaysAlive(t);
232		t.interrupt();
233	<	t.join();
309	<	checkEmpty(q);
233	>	awaitTermination(t);
234		}
235
236		/**
#	Line 322 | Line 246 | public class LinkedTransferQueueTest ext
246		}
247
248		/**
249	<	* timed pool with zero timeout succeeds when non-empty, else times out
249	>	* timed poll with zero timeout succeeds when non-empty, else times out
250		*/
251		public void testTimedPoll0() throws InterruptedException {
252		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
#	Line 334 | Line 258 | public class LinkedTransferQueueTest ext
258		}
259
260		/**
261	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
261	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
262		*/
263		public void testTimedPoll() throws InterruptedException {
264		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
265	<	for (int i = 0; i < SIZE; ++i) {
266	<	long t0 = System.nanoTime();
265	>	long startTime = System.nanoTime();
266	>	for (int i = 0; i < SIZE; ++i)
267		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
268	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
269	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
270	<	}
271	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
268	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
269	>
270	>	startTime = System.nanoTime();
271	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
272	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
273		checkEmpty(q);
274		}
275
#	Line 353 | Line 278 | public class LinkedTransferQueueTest ext
278		* returning timeout status
279		*/
280		public void testInterruptedTimedPoll() throws InterruptedException {
281	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
281	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
282	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
283		Thread t = newStartedThread(new CheckedRunnable() {
284	<	void realRun() throws InterruptedException {
285	<	for (int i = 0; i < SIZE; ++i) {
286	<	long t0 = System.nanoTime();
287	<	threadAssertEquals(i, (int) q.poll(LONG_DELAY_MS,
288	<	MILLISECONDS));
363	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
364	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
365	<	}
284	>	public void realRun() throws InterruptedException {
285	>	long startTime = System.nanoTime();
286	>	for (int i = 0; i < SIZE; ++i)
287	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
288	>	aboutToWait.countDown();
289		try {
290		q.poll(LONG_DELAY_MS, MILLISECONDS);
291	+	shouldThrow();
292		} catch (InterruptedException success) {}
293	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
294		}});
295	<	Thread.sleep(SMALL_DELAY_MS);
295	>
296	>	aboutToWait.await();
297	>	waitForThreadToEnterWaitState(t);
298		t.interrupt();
299	<	t.join();
299	>	awaitTermination(t);
300		checkEmpty(q);
301		}
302
303		/**
304	<	* timed poll before a delayed offer fails; after offer succeeds;
305	<	* on interruption throws
304	>	* timed poll after thread interrupted throws InterruptedException
305	>	* instead of returning timeout status
306		*/
307	<	public void testTimedPollWithOffer() throws InterruptedException {
308	<	final LinkedTransferQueue q = new LinkedTransferQueue();
309	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
310	<	void realRun() throws InterruptedException {
311	<	threadAssertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
312	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
313	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
307	>	public void testTimedPollAfterInterrupt() throws InterruptedException {
308	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
309	>	Thread t = newStartedThread(new CheckedRunnable() {
310	>	public void realRun() throws InterruptedException {
311	>	long startTime = System.nanoTime();
312	>	Thread.currentThread().interrupt();
313	>	for (int i = 0; i < SIZE; ++i)
314	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
315	>	try {
316	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
317	>	shouldThrow();
318	>	} catch (InterruptedException success) {}
319	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
320		}});
321	<	Thread.sleep(SMALL_DELAY_MS);
322	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
323	<	t.interrupt();
391	<	t.join();
321	>
322	>	awaitTermination(t);
323	>	checkEmpty(q);
324		}
325
326		/**
#	Line 418 | Line 350 | public class LinkedTransferQueueTest ext
350		try {
351		q.element();
352		shouldThrow();
353	<	} catch (NoSuchElementException success) {
422	<	}
353	>	} catch (NoSuchElementException success) {}
354		checkEmpty(q);
355		}
356
#	Line 434 | Line 365 | public class LinkedTransferQueueTest ext
365		try {
366		q.remove();
367		shouldThrow();
368	<	} catch (NoSuchElementException success) {
438	<	}
439	<	checkEmpty(q);
440	<	}
441	<
442	<	/**
443	<	* remove(x) removes x and returns true if present
444	<	*/
445	<	public void testRemoveElement() throws InterruptedException {
446	<	LinkedTransferQueue q = populatedQueue(SIZE);
447	<	for (int i = 1; i < SIZE; i += 2) {
448	<	assertTrue(q.remove(i));
449	<	}
450	<	for (int i = 0; i < SIZE; i += 2) {
451	<	assertTrue(q.remove(i));
452	<	assertFalse(q.remove(i + 1));
453	<	}
368	>	} catch (NoSuchElementException success) {}
369		checkEmpty(q);
370		}
371
#	Line 464 | Line 379 | public class LinkedTransferQueueTest ext
379		assertTrue(q.remove(one));
380		assertTrue(q.remove(two));
381		assertTrue(q.add(three));
382	<	assertTrue(q.take() == three);
382	>	assertSame(q.take(), three);
383		}
384
385		/**
#	Line 500 | Line 415 | public class LinkedTransferQueueTest ext
415		*/
416		public void testContainsAll() {
417		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
418	<	LinkedTransferQueue<Integer> p = new LinkedTransferQueue<Integer>();
418	>	LinkedTransferQueue<Integer> p = new LinkedTransferQueue<>();
419		for (int i = 0; i < SIZE; ++i) {
420		assertTrue(q.containsAll(p));
421		assertFalse(p.containsAll(q));
#	Line 546 | Line 461 | public class LinkedTransferQueueTest ext
461		}
462
463		/**
464	<	* toArray() contains all elements
464	>	* toArray() contains all elements in FIFO order
465		*/
466	<	public void testToArray() throws InterruptedException {
466	>	public void testToArray() {
467		LinkedTransferQueue q = populatedQueue(SIZE);
468		Object[] o = q.toArray();
469		for (int i = 0; i < o.length; i++) {
470	<	assertEquals(o[i], q.take());
470	>	assertSame(o[i], q.poll());
471		}
472		}
473
474		/**
475	<	* toArray(a) contains all elements
475	>	* toArray(a) contains all elements in FIFO order
476		*/
477	<	public void testToArray2() throws InterruptedException {
477	>	public void testToArray2() {
478		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
479		Integer[] ints = new Integer[SIZE];
480	<	ints = q.toArray(ints);
480	>	Integer[] array = q.toArray(ints);
481	>	assertSame(ints, array);
482		for (int i = 0; i < ints.length; i++) {
483	<	assertEquals(ints[i], q.take());
568	<	}
569	<	}
570	<
571	<	/**
572	<	* toArray(null) throws NullPointerException
573	<	*/
574	<	public void testToArray_BadArg() {
575	<	try {
576	<	LinkedTransferQueue q = populatedQueue(SIZE);
577	<	Object o[] = q.toArray(null);
578	<	shouldThrow();
579	<	} catch (NullPointerException success) {
483	>	assertSame(ints[i], q.poll());
484		}
485		}
486
487		/**
488	<	* toArray(incompatible array type) throws CCE
488	>	* toArray(incompatible array type) throws ArrayStoreException
489		*/
490		public void testToArray1_BadArg() {
491	+	LinkedTransferQueue q = populatedQueue(SIZE);
492		try {
493	<	LinkedTransferQueue q = populatedQueue(SIZE);
589	<	Object o[] = q.toArray(new String[10]);
493	>	q.toArray(new String[10]);
494		shouldThrow();
495	<	} catch (ArrayStoreException success) {
592	<	}
495	>	} catch (ArrayStoreException success) {}
496		}
497
498		/**
#	Line 598 | Line 501 | public class LinkedTransferQueueTest ext
501		public void testIterator() throws InterruptedException {
502		LinkedTransferQueue q = populatedQueue(SIZE);
503		Iterator it = q.iterator();
504	<	int i = 0;
505	<	while (it.hasNext()) {
506	<	assertEquals(it.next(), i++);
604	<	}
504	>	int i;
505	>	for (i = 0; it.hasNext(); i++)
506	>	assertTrue(q.contains(it.next()));
507		assertEquals(i, SIZE);
508	+	assertIteratorExhausted(it);
509	+
510	+	it = q.iterator();
511	+	for (i = 0; it.hasNext(); i++)
512	+	assertEquals(it.next(), q.take());
513	+	assertEquals(i, SIZE);
514	+	assertIteratorExhausted(it);
515	+	}
516	+
517	+	/**
518	+	* iterator of empty collection has no elements
519	+	*/
520	+	public void testEmptyIterator() {
521	+	assertIteratorExhausted(new LinkedTransferQueue().iterator());
522		}
523
524		/**
#	Line 619 | Line 535 | public class LinkedTransferQueueTest ext
535		it.remove();
536
537		it = q.iterator();
538	<	assertEquals(it.next(), one);
539	<	assertEquals(it.next(), three);
538	>	assertSame(it.next(), one);
539	>	assertSame(it.next(), three);
540		assertFalse(it.hasNext());
541		}
542
#	Line 628 | Line 544 | public class LinkedTransferQueueTest ext
544		* iterator ordering is FIFO
545		*/
546		public void testIteratorOrdering() {
547	<	final LinkedTransferQueue<Integer> q
632	<	= new LinkedTransferQueue<Integer>();
547	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
548		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
549		q.add(one);
550		q.add(two);
#	Line 664 | Line 579 | public class LinkedTransferQueueTest ext
579		LinkedTransferQueue q = populatedQueue(SIZE);
580		String s = q.toString();
581		for (int i = 0; i < SIZE; ++i) {
582	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
582	>	assertTrue(s.contains(String.valueOf(i)));
583		}
584		}
585
#	Line 673 | Line 588 | public class LinkedTransferQueueTest ext
588		*/
589		public void testOfferInExecutor() {
590		final LinkedTransferQueue q = new LinkedTransferQueue();
591	<	q.add(one);
592	<	q.add(two);
593	<	ExecutorService executor = Executors.newFixedThreadPool(2);
594	<
595	<	executor.execute(new CheckedRunnable() {
596	<	void realRun() {
597	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS,
598	<	MILLISECONDS));
599	<	}});
600	<
601	<	executor.execute(new CheckedRunnable() {
687	<	void realRun() throws InterruptedException {
688	<	Thread.sleep(SMALL_DELAY_MS);
689	<	threadAssertEquals(one, q.take());
690	<	}});
591	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
592	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
593	>	try (PoolCleaner cleaner = cleaner(executor)) {
594	>
595	>	executor.execute(new CheckedRunnable() {
596	>	public void realRun() throws InterruptedException {
597	>	threadsStarted.await();
598	>	long startTime = System.nanoTime();
599	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
600	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
601	>	}});
602
603	<	joinPool(executor);
603	>	executor.execute(new CheckedRunnable() {
604	>	public void realRun() throws InterruptedException {
605	>	threadsStarted.await();
606	>	assertSame(one, q.take());
607	>	checkEmpty(q);
608	>	}});
609	>	}
610		}
611
612		/**
#	Line 697 | Line 614 | public class LinkedTransferQueueTest ext
614		*/
615		public void testPollInExecutor() {
616		final LinkedTransferQueue q = new LinkedTransferQueue();
617	<	ExecutorService executor = Executors.newFixedThreadPool(2);
618	<
619	<	executor.execute(new CheckedRunnable() {
620	<	void realRun() throws InterruptedException {
621	<	threadAssertNull(q.poll());
622	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS,
623	<	MILLISECONDS));
624	<	threadAssertTrue(q.isEmpty());
625	<	}});
626	<
627	<	executor.execute(new CheckedRunnable() {
628	<	void realRun() throws InterruptedException {
629	<	Thread.sleep(SMALL_DELAY_MS);
713	<	q.put(one);
714	<	}});
617	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
618	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
619	>	try (PoolCleaner cleaner = cleaner(executor)) {
620	>
621	>	executor.execute(new CheckedRunnable() {
622	>	public void realRun() throws InterruptedException {
623	>	assertNull(q.poll());
624	>	threadsStarted.await();
625	>	long startTime = System.nanoTime();
626	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
627	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
628	>	checkEmpty(q);
629	>	}});
630
631	<	joinPool(executor);
631	>	executor.execute(new CheckedRunnable() {
632	>	public void realRun() throws InterruptedException {
633	>	threadsStarted.await();
634	>	q.put(one);
635	>	}});
636	>	}
637		}
638
639		/**
640		* A deserialized serialized queue has same elements in same order
641		*/
642		public void testSerialization() throws Exception {
643	<	LinkedTransferQueue q = populatedQueue(SIZE);
644	<
725	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
726	<	ObjectOutputStream out
727	<	= new ObjectOutputStream(new BufferedOutputStream(bout));
728	<	out.writeObject(q);
729	<	out.close();
730	<
731	<	ByteArrayInputStream bin
732	<	= new ByteArrayInputStream(bout.toByteArray());
733	<	ObjectInputStream in
734	<	= new ObjectInputStream(new BufferedInputStream(bin));
735	<	LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
643	>	Queue x = populatedQueue(SIZE);
644	>	Queue y = serialClone(x);
645
646	<	assertEquals(q.size(), r.size());
647	<	while (!q.isEmpty()) {
648	<	assertEquals(q.remove(), r.remove());
649	<	}
650	<	}
651	<
652	<	/**
744	<	* drainTo(null) throws NullPointerException
745	<	*/
746	<	public void testDrainToNull() {
747	<	LinkedTransferQueue q = populatedQueue(SIZE);
748	<	try {
749	<	q.drainTo(null);
750	<	shouldThrow();
751	<	} catch (NullPointerException success) {
752	<	}
753	<	}
754	<
755	<	/**
756	<	* drainTo(this) throws IllegalArgumentException
757	<	*/
758	<	public void testDrainToSelf() {
759	<	LinkedTransferQueue q = populatedQueue(SIZE);
760	<	try {
761	<	q.drainTo(q);
762	<	shouldThrow();
763	<	} catch (IllegalArgumentException success) {
646	>	assertNotSame(y, x);
647	>	assertEquals(x.size(), y.size());
648	>	assertEquals(x.toString(), y.toString());
649	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
650	>	while (!x.isEmpty()) {
651	>	assertFalse(y.isEmpty());
652	>	assertEquals(x.remove(), y.remove());
653		}
654	+	assertTrue(y.isEmpty());
655		}
656
657		/**
#	Line 771 | Line 661 | public class LinkedTransferQueueTest ext
661		LinkedTransferQueue q = populatedQueue(SIZE);
662		ArrayList l = new ArrayList();
663		q.drainTo(l);
664	<	assertEquals(q.size(), 0);
665	<	assertEquals(l.size(), SIZE);
664	>	assertEquals(0, q.size());
665	>	assertEquals(SIZE, l.size());
666		for (int i = 0; i < SIZE; ++i) {
667	<	assertEquals(l.get(i), i);
667	>	assertEquals(i, l.get(i));
668		}
669		q.add(zero);
670		q.add(one);
#	Line 783 | Line 673 | public class LinkedTransferQueueTest ext
673		assertTrue(q.contains(one));
674		l.clear();
675		q.drainTo(l);
676	<	assertEquals(q.size(), 0);
677	<	assertEquals(l.size(), 2);
676	>	assertEquals(0, q.size());
677	>	assertEquals(2, l.size());
678		for (int i = 0; i < 2; ++i) {
679	<	assertEquals(l.get(i), i);
679	>	assertEquals(i, l.get(i));
680		}
681		}
682
#	Line 796 | Line 686 | public class LinkedTransferQueueTest ext
686		public void testDrainToWithActivePut() throws InterruptedException {
687		final LinkedTransferQueue q = populatedQueue(SIZE);
688		Thread t = newStartedThread(new CheckedRunnable() {
689	<	void realRun() {
689	>	public void realRun() {
690		q.put(SIZE + 1);
691		}});
692		ArrayList l = new ArrayList();
693		q.drainTo(l);
694		assertTrue(l.size() >= SIZE);
695	<	for (int i = 0; i < SIZE; ++i) {
696	<	assertEquals(l.get(i), i);
697	<	}
808	<	t.join();
695	>	for (int i = 0; i < SIZE; ++i)
696	>	assertEquals(i, l.get(i));
697	>	awaitTermination(t);
698		assertTrue(q.size() + l.size() >= SIZE);
699		}
700
701		/**
702	<	* drainTo(null, n) throws NullPointerException
814	<	*/
815	<	public void testDrainToNullN() {
816	<	LinkedTransferQueue q = populatedQueue(SIZE);
817	<	try {
818	<	q.drainTo(null, SIZE);
819	<	shouldThrow();
820	<	} catch (NullPointerException success) {
821	<	}
822	<	}
823	<
824	<	/**
825	<	* drainTo(this, n) throws IllegalArgumentException
826	<	*/
827	<	public void testDrainToSelfN() {
828	<	LinkedTransferQueue q = populatedQueue(SIZE);
829	<	try {
830	<	q.drainTo(q, SIZE);
831	<	shouldThrow();
832	<	} catch (IllegalArgumentException success) {
833	<	}
834	<	}
835	<
836	<	/**
837	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
702	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
703		*/
704		public void testDrainToN() {
705		LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 845 | Line 710 | public class LinkedTransferQueueTest ext
710		ArrayList l = new ArrayList();
711		q.drainTo(l, i);
712		int k = (i < SIZE) ? i : SIZE;
713	<	assertEquals(l.size(), k);
714	<	assertEquals(q.size(), SIZE - k);
715	<	for (int j = 0; j < k; ++j) {
716	<	assertEquals(l.get(j), j);
717	<	}
853	<	while (q.poll() != null)
854	<	;
713	>	assertEquals(k, l.size());
714	>	assertEquals(SIZE - k, q.size());
715	>	for (int j = 0; j < k; ++j)
716	>	assertEquals(j, l.get(j));
717	>	do {} while (q.poll() != null);
718		}
719		}
720
#	Line 861 | Line 724 | public class LinkedTransferQueueTest ext
724		*/
725		public void testWaitingConsumer() throws InterruptedException {
726		final LinkedTransferQueue q = new LinkedTransferQueue();
727	<	assertEquals(q.getWaitingConsumerCount(), 0);
727	>	assertEquals(0, q.getWaitingConsumerCount());
728		assertFalse(q.hasWaitingConsumer());
729	+	final CountDownLatch threadStarted = new CountDownLatch(1);
730
731		Thread t = newStartedThread(new CheckedRunnable() {
732	<	void realRun() throws InterruptedException {
733	<	Thread.sleep(SMALL_DELAY_MS);
734	<	threadAssertTrue(q.hasWaitingConsumer());
735	<	threadAssertEquals(q.getWaitingConsumerCount(), 1);
736	<	threadAssertTrue(q.offer(new Object()));
737	<	threadAssertFalse(q.hasWaitingConsumer());
738	<	threadAssertEquals(q.getWaitingConsumerCount(), 0);
732	>	public void realRun() throws InterruptedException {
733	>	threadStarted.countDown();
734	>	long startTime = System.nanoTime();
735	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
736	>	assertEquals(0, q.getWaitingConsumerCount());
737	>	assertFalse(q.hasWaitingConsumer());
738	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
739		}});
740
741	<	assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) != null);
742	<	assertEquals(q.getWaitingConsumerCount(), 0);
741	>	threadStarted.await();
742	>	waitForThreadToEnterWaitState(t);
743	>	assertEquals(1, q.getWaitingConsumerCount());
744	>	assertTrue(q.hasWaitingConsumer());
745	>
746	>	assertTrue(q.offer(one));
747	>	assertEquals(0, q.getWaitingConsumerCount());
748		assertFalse(q.hasWaitingConsumer());
749	<	t.join();
749	>
750	>	awaitTermination(t);
751		}
752
753		/**
#	Line 893 | Line 763 | public class LinkedTransferQueueTest ext
763
764		/**
765		* transfer waits until a poll occurs. The transfered element
766	<	* is returned by this associated poll.
766	>	* is returned by the associated poll.
767		*/
768		public void testTransfer2() throws InterruptedException {
769	<	final LinkedTransferQueue<Integer> q
770	<	= new LinkedTransferQueue<Integer>();
769	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
770	>	final CountDownLatch threadStarted = new CountDownLatch(1);
771
772		Thread t = newStartedThread(new CheckedRunnable() {
773	<	void realRun() throws InterruptedException {
774	<	q.transfer(SIZE);
775	<	threadAssertTrue(q.isEmpty());
773	>	public void realRun() throws InterruptedException {
774	>	threadStarted.countDown();
775	>	q.transfer(five);
776	>	checkEmpty(q);
777		}});
778
779	<	Thread.sleep(SHORT_DELAY_MS);
779	>	threadStarted.await();
780	>	waitForThreadToEnterWaitState(t);
781		assertEquals(1, q.size());
782	<	assertEquals(SIZE, (int) q.poll());
783	<	assertTrue(q.isEmpty());
784	<	t.join();
782	>	assertSame(five, q.poll());
783	>	checkEmpty(q);
784	>	awaitTermination(t);
785		}
786
787		/**
788		* transfer waits until a poll occurs, and then transfers in fifo order
789		*/
790		public void testTransfer3() throws InterruptedException {
791	<	final LinkedTransferQueue<Integer> q
920	<	= new LinkedTransferQueue<Integer>();
791	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
792
793		Thread first = newStartedThread(new CheckedRunnable() {
794	<	void realRun() throws InterruptedException {
795	<	Integer i = SIZE + 1;
796	<	q.transfer(i);
797	<	threadAssertTrue(!q.contains(i));
927	<	threadAssertEquals(1, q.size());
794	>	public void realRun() throws InterruptedException {
795	>	q.transfer(four);
796	>	assertTrue(!q.contains(four));
797	>	assertEquals(1, q.size());
798		}});
799
800		Thread interruptedThread = newStartedThread(
801		new CheckedInterruptedRunnable() {
802	<	void realRun() throws InterruptedException {
803	<	while (q.size() == 0)
802	>	public void realRun() throws InterruptedException {
803	>	while (q.isEmpty())
804		Thread.yield();
805	<	q.transfer(SIZE);
805	>	q.transfer(five);
806		}});
807
808		while (q.size() < 2)
809		Thread.yield();
810		assertEquals(2, q.size());
811	<	assertEquals(SIZE + 1, (int) q.poll());
811	>	assertSame(four, q.poll());
812		first.join();
813		assertEquals(1, q.size());
814		interruptedThread.interrupt();
815		interruptedThread.join();
816	<	assertEquals(0, q.size());
947	<	assertTrue(q.isEmpty());
816	>	checkEmpty(q);
817		}
818
819		/**
#	Line 955 | Line 824 | public class LinkedTransferQueueTest ext
824		final LinkedTransferQueue q = new LinkedTransferQueue();
825
826		Thread t = newStartedThread(new CheckedRunnable() {
827	<	void realRun() throws InterruptedException {
827	>	public void realRun() throws InterruptedException {
828		q.transfer(four);
829	<	threadAssertFalse(q.contains(four));
830	<	threadAssertEquals(three, q.poll());
829	>	assertFalse(q.contains(four));
830	>	assertSame(three, q.poll());
831		}});
832
833	<	Thread.sleep(SHORT_DELAY_MS);
833	>	while (q.isEmpty())
834	>	Thread.yield();
835	>	assertFalse(q.isEmpty());
836	>	assertEquals(1, q.size());
837		assertTrue(q.offer(three));
838	<	assertEquals(four, q.poll());
839	<	t.join();
838	>	assertSame(four, q.poll());
839	>	awaitTermination(t);
840		}
841
842		/**
843		* transfer waits until a take occurs. The transfered element
844	<	* is returned by this associated take.
844	>	* is returned by the associated take.
845		*/
846		public void testTransfer5() throws InterruptedException {
847	<	final LinkedTransferQueue<Integer> q
976	<	= new LinkedTransferQueue<Integer>();
847	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
848
849		Thread t = newStartedThread(new CheckedRunnable() {
850	<	void realRun() throws InterruptedException {
851	<	q.transfer(SIZE);
850	>	public void realRun() throws InterruptedException {
851	>	q.transfer(four);
852		checkEmpty(q);
853		}});
854
855	<	Thread.sleep(SHORT_DELAY_MS);
856	<	assertEquals(SIZE, (int) q.take());
855	>	while (q.isEmpty())
856	>	Thread.yield();
857	>	assertFalse(q.isEmpty());
858	>	assertEquals(1, q.size());
859	>	assertSame(four, q.take());
860		checkEmpty(q);
861	<	t.join();
861	>	awaitTermination(t);
862		}
863
864		/**
865		* tryTransfer(null) throws NullPointerException
866		*/
867		public void testTryTransfer1() {
868	+	final LinkedTransferQueue q = new LinkedTransferQueue();
869		try {
995	–	final LinkedTransferQueue q = new LinkedTransferQueue();
870		q.tryTransfer(null);
871		shouldThrow();
872		} catch (NullPointerException success) {}
#	Line 1018 | Line 892 | public class LinkedTransferQueueTest ext
892		final LinkedTransferQueue q = new LinkedTransferQueue();
893
894		Thread t = newStartedThread(new CheckedRunnable() {
895	<	void realRun() {
895	>	public void realRun() {
896		while (! q.hasWaitingConsumer())
897		Thread.yield();
898	<	threadAssertTrue(q.hasWaitingConsumer());
899	<	threadAssertTrue(q.isEmpty());
900	<	threadAssertTrue(q.size() == 0);
1027	<	threadAssertTrue(q.tryTransfer(hotPotato));
898	>	assertTrue(q.hasWaitingConsumer());
899	>	checkEmpty(q);
900	>	assertTrue(q.tryTransfer(hotPotato));
901		}});
902
903	<	assertTrue(q.poll(MEDIUM_DELAY_MS, MILLISECONDS) == hotPotato);
903	>	long startTime = System.nanoTime();
904	>	assertSame(hotPotato, q.poll(LONG_DELAY_MS, MILLISECONDS));
905	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
906		checkEmpty(q);
907	<	t.join();
907	>	awaitTermination(t);
908		}
909
910		/**
#	Line 1041 | Line 916 | public class LinkedTransferQueueTest ext
916		final LinkedTransferQueue q = new LinkedTransferQueue();
917
918		Thread t = newStartedThread(new CheckedRunnable() {
919	<	void realRun() {
919	>	public void realRun() {
920		while (! q.hasWaitingConsumer())
921		Thread.yield();
922	<	threadAssertTrue(q.hasWaitingConsumer());
923	<	threadAssertTrue(q.isEmpty());
924	<	threadAssertTrue(q.size() == 0);
1050	<	threadAssertTrue(q.tryTransfer(hotPotato));
922	>	assertTrue(q.hasWaitingConsumer());
923	>	checkEmpty(q);
924	>	assertTrue(q.tryTransfer(hotPotato));
925		}});
926
927	<	assertTrue(q.take() == hotPotato);
927	>	assertSame(q.take(), hotPotato);
928		checkEmpty(q);
929	<	t.join();
929	>	awaitTermination(t);
930		}
931
932		/**
933	<	* tryTransfer waits the amount given if interrupted, and
1060	<	* throws interrupted exception
933	>	* tryTransfer blocks interruptibly if no takers
934		*/
935		public void testTryTransfer5() throws InterruptedException {
936		final LinkedTransferQueue q = new LinkedTransferQueue();
937	+	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
938	+	assertTrue(q.isEmpty());
939	+
940	+	Thread t = newStartedThread(new CheckedRunnable() {
941	+	public void realRun() throws InterruptedException {
942	+	long startTime = System.nanoTime();
943	+	Thread.currentThread().interrupt();
944	+	try {
945	+	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
946	+	shouldThrow();
947	+	} catch (InterruptedException success) {}
948	+	assertFalse(Thread.interrupted());
949
950	<	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
951	<	void realRun() throws InterruptedException {
952	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
950	>	pleaseInterrupt.countDown();
951	>	try {
952	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
953	>	shouldThrow();
954	>	} catch (InterruptedException success) {}
955	>	assertFalse(Thread.interrupted());
956	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
957		}});
958
959	<	Thread.sleep(SMALL_DELAY_MS);
960	<	toInterrupt.interrupt();
961	<	toInterrupt.join();
959	>	await(pleaseInterrupt);
960	>	assertThreadStaysAlive(t);
961	>	t.interrupt();
962	>	awaitTermination(t);
963	>	checkEmpty(q);
964		}
965
966		/**
967	<	* tryTransfer gives up after the timeout and return false
967	>	* tryTransfer gives up after the timeout and returns false
968		*/
969		public void testTryTransfer6() throws InterruptedException {
970		final LinkedTransferQueue q = new LinkedTransferQueue();
971
972		Thread t = newStartedThread(new CheckedRunnable() {
973	<	void realRun() throws InterruptedException {
974	<	threadAssertFalse
975	<	(q.tryTransfer(new Object(),
976	<	SHORT_DELAY_MS, MILLISECONDS));
973	>	public void realRun() throws InterruptedException {
974	>	long startTime = System.nanoTime();
975	>	assertFalse(q.tryTransfer(new Object(),
976	>	timeoutMillis(), MILLISECONDS));
977	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
978	>	checkEmpty(q);
979		}});
980
981	<	Thread.sleep(SMALL_DELAY_MS);
981	>	awaitTermination(t);
982		checkEmpty(q);
1090	–	t.join();
983		}
984
985		/**
#	Line 1099 | Line 991 | public class LinkedTransferQueueTest ext
991		assertTrue(q.offer(four));
992
993		Thread t = newStartedThread(new CheckedRunnable() {
994	<	void realRun() throws InterruptedException {
995	<	threadAssertTrue(q.tryTransfer(five,
996	<	MEDIUM_DELAY_MS, MILLISECONDS));
997	<	threadAssertTrue(q.isEmpty());
994	>	public void realRun() throws InterruptedException {
995	>	long startTime = System.nanoTime();
996	>	assertTrue(q.tryTransfer(five, LONG_DELAY_MS, MILLISECONDS));
997	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
998	>	checkEmpty(q);
999		}});
1000
1001	<	Thread.sleep(SHORT_DELAY_MS);
1001	>	while (q.size() != 2)
1002	>	Thread.yield();
1003		assertEquals(2, q.size());
1004	<	assertEquals(four, q.poll());
1005	<	assertEquals(five, q.poll());
1004	>	assertSame(four, q.poll());
1005	>	assertSame(five, q.poll());
1006		checkEmpty(q);
1007	<	t.join();
1007	>	awaitTermination(t);
1008		}
1009
1010		/**
1011	<	* tryTransfer attempts to enqueue into the q and fails returning
1012	<	* false not enqueueing and the successive poll is null
1011	>	* tryTransfer attempts to enqueue into the queue and fails
1012	>	* returning false not enqueueing and the successive poll is null
1013		*/
1014		public void testTryTransfer8() throws InterruptedException {
1015		final LinkedTransferQueue q = new LinkedTransferQueue();
1016		assertTrue(q.offer(four));
1017		assertEquals(1, q.size());
1018	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1018	>	long startTime = System.nanoTime();
1019	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
1020	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
1021		assertEquals(1, q.size());
1022	<	assertEquals(four, q.poll());
1022	>	assertSame(four, q.poll());
1023		assertNull(q.poll());
1024		checkEmpty(q);
1025		}
1026
1027		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1028	<	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1029	<	assertTrue(q.isEmpty());
1028	>	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
1029	>	checkEmpty(q);
1030		for (int i = 0; i < n; i++) {
1031		assertEquals(i, q.size());
1032		assertTrue(q.offer(i));
#	Line 1139 | Line 1035 | public class LinkedTransferQueueTest ext
1035		assertFalse(q.isEmpty());
1036		return q;
1037		}
1038	+
1039	+	/**
1040	+	* remove(null), contains(null) always return false
1041	+	*/
1042	+	public void testNeverContainsNull() {
1043	+	Collection<?>[] qs = {
1044	+	new LinkedTransferQueue<Object>(),
1045	+	populatedQueue(2),
1046	+	};
1047	+
1048	+	for (Collection<?> q : qs) {
1049	+	assertFalse(q.contains(null));
1050	+	assertFalse(q.remove(null));
1051	+	}
1052	+	}
1053		}

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