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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 1.82 by jsr166, Sun Aug 11 22:29:27 2019 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.Callable;
19	>	import java.util.concurrent.CountDownLatch;
20	>	import java.util.concurrent.Executors;
21	>	import java.util.concurrent.ExecutorService;
22	>	import java.util.concurrent.LinkedTransferQueue;
23	>
24		import junit.framework.Test;
22	–	import junit.framework.TestSuite;
25
26		@SuppressWarnings({"unchecked", "rawtypes"})
27		public class LinkedTransferQueueTest extends JSR166TestCase {
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());
35	>	main(suite(), args);
36		}
37
38		public static Test suite() {
39	<	return new TestSuite(LinkedTransferQueueTest.class);
40	<	}
41	<
42	<	void checkEmpty(LinkedTransferQueue q) throws InterruptedException {
43	<	assertTrue(q.isEmpty());
44	<	assertEquals(0, q.size());
45	<	assertNull(q.peek());
46	<	assertNull(q.poll());
47	<	assertNull(q.poll(0, MILLISECONDS));
48	<	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) {}
39	>	class Implementation implements CollectionImplementation {
40	>	public Class<?> klazz() { return LinkedTransferQueue.class; }
41	>	public Collection emptyCollection() { return new LinkedTransferQueue(); }
42	>	public Object makeElement(int i) { return i; }
43	>	public boolean isConcurrent() { return true; }
44	>	public boolean permitsNulls() { return false; }
45	>	}
46	>	return newTestSuite(LinkedTransferQueueTest.class,
47	>	new Generic().testSuite(),
48	>	CollectionTest.testSuite(new Implementation()));
49		}
50
51		/**
#	Line 80 | Line 73 | public class LinkedTransferQueueTest ext
73		* NullPointerException
74		*/
75		public void testConstructor3() {
76	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
77		try {
78	<	Integer[] ints = new Integer[SIZE];
85	<	new LinkedTransferQueue(Arrays.asList(ints));
78	>	new LinkedTransferQueue(elements);
79		shouldThrow();
80		} catch (NullPointerException success) {}
81		}
#	Line 92 | Line 85 | public class LinkedTransferQueueTest ext
85		* throws NullPointerException
86		*/
87		public void testConstructor4() {
88	+	Integer[] ints = new Integer[SIZE];
89	+	for (int i = 0; i < SIZE - 1; ++i)
90	+	ints[i] = i;
91	+	Collection<Integer> elements = Arrays.asList(ints);
92		try {
93	<	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));
93	>	new LinkedTransferQueue(elements);
94		shouldThrow();
95		} catch (NullPointerException success) {}
96		}
#	Line 130 | Line 123 | public class LinkedTransferQueueTest ext
123		* remainingCapacity() always returns Integer.MAX_VALUE
124		*/
125		public void testRemainingCapacity() {
126	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
126	>	BlockingQueue q = populatedQueue(SIZE);
127		for (int i = 0; i < SIZE; ++i) {
128		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
129		assertEquals(SIZE - i, q.size());
130	<	q.remove();
130	>	assertEquals(i, q.remove());
131		}
132		for (int i = 0; i < SIZE; ++i) {
133		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
134		assertEquals(i, q.size());
135	<	q.add(i);
135	>	assertTrue(q.add(i));
136		}
137		}
138
139		/**
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	–	/**
140		* addAll(this) throws IllegalArgumentException
141		*/
142		public void testAddAllSelf() {
143	+	LinkedTransferQueue q = populatedQueue(SIZE);
144		try {
184	–	LinkedTransferQueue q = populatedQueue(SIZE);
145		q.addAll(q);
146		shouldThrow();
147		} catch (IllegalArgumentException success) {}
148		}
149
150		/**
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	–	/**
151		* addAll of a collection with any null elements throws
152		* NullPointerException after possibly adding some elements
153		*/
154		public void testAddAll3() {
155	+	LinkedTransferQueue q = new LinkedTransferQueue();
156	+	Integer[] ints = new Integer[SIZE];
157	+	for (int i = 0; i < SIZE - 1; ++i)
158	+	ints[i] = i;
159		try {
208	–	LinkedTransferQueue q = new LinkedTransferQueue();
209	–	Integer[] ints = new Integer[SIZE];
210	–	for (int i = 0; i < SIZE - 1; ++i) {
211	–	ints[i] = i;
212	–	}
160		q.addAll(Arrays.asList(ints));
161		shouldThrow();
162		} catch (NullPointerException success) {}
#	Line 233 | Line 180 | public class LinkedTransferQueueTest ext
180		}
181
182		/**
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	–	/**
183		* all elements successfully put are contained
184		*/
185		public void testPut() {
186	<	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
186	>	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
187		for (int i = 0; i < SIZE; ++i) {
188	<	assertEquals(q.size(), i);
188	>	assertEquals(i, q.size());
189		q.put(i);
190		assertTrue(q.contains(i));
191		}
#	Line 266 | Line 202 | public class LinkedTransferQueueTest ext
202		}
203
204		/**
205	<	* 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
205	>	* take removes existing elements until empty, then blocks interruptibly
206		*/
207		public void testBlockingTake() throws InterruptedException {
208	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
209	<	Thread t = new Thread(new CheckedRunnable() {
208	>	final BlockingQueue q = populatedQueue(SIZE);
209	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
210	>	Thread t = newStartedThread(new CheckedRunnable() {
211		public void realRun() throws InterruptedException {
212	<	for (int i = 0; i < SIZE; ++i) {
213	<	assertEquals(i, (int) q.take());
214	<	}
212	>	for (int i = 0; i < SIZE; i++) assertEquals(i, q.take());
213	>
214	>	Thread.currentThread().interrupt();
215	>	try {
216	>	q.take();
217	>	shouldThrow();
218	>	} catch (InterruptedException success) {}
219	>	assertFalse(Thread.interrupted());
220	>
221	>	pleaseInterrupt.countDown();
222		try {
223		q.take();
224		shouldThrow();
225		} catch (InterruptedException success) {}
226	+	assertFalse(Thread.interrupted());
227		}});
228
229	<	t.start();
230	<	Thread.sleep(SHORT_DELAY_MS);
229	>	await(pleaseInterrupt);
230	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
231		t.interrupt();
232	<	t.join();
302	<	checkEmpty(q);
232	>	awaitTermination(t);
233		}
234
235		/**
#	Line 315 | Line 245 | public class LinkedTransferQueueTest ext
245		}
246
247		/**
248	<	* timed pool with zero timeout succeeds when non-empty, else times out
248	>	* timed poll with zero timeout succeeds when non-empty, else times out
249		*/
250		public void testTimedPoll0() throws InterruptedException {
251		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
#	Line 327 | Line 257 | public class LinkedTransferQueueTest ext
257		}
258
259		/**
260	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
260	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
261		*/
262		public void testTimedPoll() throws InterruptedException {
263		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
264	<	for (int i = 0; i < SIZE; ++i) {
265	<	long t0 = System.nanoTime();
264	>	long startTime = System.nanoTime();
265	>	for (int i = 0; i < SIZE; ++i)
266		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
267	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
268	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
269	<	}
270	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
267	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
268	>
269	>	startTime = System.nanoTime();
270	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
271	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
272		checkEmpty(q);
273		}
274
#	Line 346 | Line 277 | public class LinkedTransferQueueTest ext
277		* returning timeout status
278		*/
279		public void testInterruptedTimedPoll() throws InterruptedException {
280	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
280	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
281	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
282		Thread t = newStartedThread(new CheckedRunnable() {
283	<	void realRun() throws InterruptedException {
284	<	for (int i = 0; i < SIZE; ++i) {
285	<	long t0 = System.nanoTime();
286	<	threadAssertEquals(i, (int) q.poll(LONG_DELAY_MS,
287	<	MILLISECONDS));
288	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
289	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
290	<	}
283	>	public void realRun() throws InterruptedException {
284	>	long startTime = System.nanoTime();
285	>	for (int i = 0; i < SIZE; i++)
286	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
287	>
288	>	Thread.currentThread().interrupt();
289	>	try {
290	>	q.poll(randomTimeout(), randomTimeUnit());
291	>	shouldThrow();
292	>	} catch (InterruptedException success) {}
293	>	assertFalse(Thread.interrupted());
294	>
295	>	pleaseInterrupt.countDown();
296		try {
297		q.poll(LONG_DELAY_MS, MILLISECONDS);
298		shouldThrow();
299		} catch (InterruptedException success) {}
300	+	assertFalse(Thread.interrupted());
301	+
302	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
303		}});
304
305	<	Thread.sleep(SMALL_DELAY_MS);
305	>	await(pleaseInterrupt);
306	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
307		t.interrupt();
308	<	t.join();
308	>	awaitTermination(t);
309		checkEmpty(q);
310		}
311
312		/**
313	<	* timed poll before a delayed offer fails; after offer succeeds;
314	<	* on interruption throws
313	>	* timed poll after thread interrupted throws InterruptedException
314	>	* instead of returning timeout status
315		*/
316	<	public void testTimedPollWithOffer() throws InterruptedException {
317	<	final LinkedTransferQueue q = new LinkedTransferQueue();
318	<	Thread t = new Thread(new CheckedRunnable() {
319	<	void realRun() throws InterruptedException {
320	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
321	<	assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS));
316	>	public void testTimedPollAfterInterrupt() throws InterruptedException {
317	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
318	>	Thread t = newStartedThread(new CheckedRunnable() {
319	>	public void realRun() throws InterruptedException {
320	>	long startTime = System.nanoTime();
321	>	Thread.currentThread().interrupt();
322	>	for (int i = 0; i < SIZE; ++i)
323	>	assertEquals(i, (int) q.poll(randomTimeout(), randomTimeUnit()));
324		try {
325	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
325	>	q.poll(randomTimeout(), randomTimeUnit());
326		shouldThrow();
327		} catch (InterruptedException success) {}
328	+	assertFalse(Thread.interrupted());
329	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
330		}});
331
332	<	t.start();
333	<	Thread.sleep(SMALL_DELAY_MS);
389	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
390	<	t.interrupt();
391	<	t.join();
332	>	awaitTermination(t);
333	>	checkEmpty(q);
334		}
335
336		/**
#	Line 438 | Line 380 | public class LinkedTransferQueueTest ext
380		}
381
382		/**
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	–	/**
383		* An add following remove(x) succeeds
384		*/
385		public void testRemoveElementAndAdd() throws InterruptedException {
#	Line 462 | Line 389 | public class LinkedTransferQueueTest ext
389		assertTrue(q.remove(one));
390		assertTrue(q.remove(two));
391		assertTrue(q.add(three));
392	<	assertTrue(q.take() == three);
392	>	assertSame(q.take(), three);
393		}
394
395		/**
#	Line 498 | Line 425 | public class LinkedTransferQueueTest ext
425		*/
426		public void testContainsAll() {
427		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
428	<	LinkedTransferQueue<Integer> p = new LinkedTransferQueue<Integer>();
428	>	LinkedTransferQueue<Integer> p = new LinkedTransferQueue<>();
429		for (int i = 0; i < SIZE; ++i) {
430		assertTrue(q.containsAll(p));
431		assertFalse(p.containsAll(q));
#	Line 544 | Line 471 | public class LinkedTransferQueueTest ext
471		}
472
473		/**
474	<	* toArray() contains all elements
474	>	* toArray() contains all elements in FIFO order
475		*/
476	<	public void testToArray() throws InterruptedException {
476	>	public void testToArray() {
477		LinkedTransferQueue q = populatedQueue(SIZE);
478	<	Object[] o = q.toArray();
479	<	for (int i = 0; i < o.length; i++) {
480	<	assertEquals(o[i], q.take());
481	<	}
478	>	Object[] a = q.toArray();
479	>	assertSame(Object[].class, a.getClass());
480	>	for (Object o : a)
481	>	assertSame(o, q.poll());
482	>	assertTrue(q.isEmpty());
483		}
484
485		/**
486	<	* toArray(a) contains all elements
486	>	* toArray(a) contains all elements in FIFO order
487		*/
488	<	public void testToArray2() throws InterruptedException {
488	>	public void testToArray2() {
489		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
490		Integer[] ints = new Integer[SIZE];
491	<	ints = q.toArray(ints);
492	<	for (int i = 0; i < ints.length; i++) {
493	<	assertEquals(ints[i], q.take());
494	<	}
495	<	}
568	<
569	<	/**
570	<	* 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) {}
491	>	Integer[] array = q.toArray(ints);
492	>	assertSame(ints, array);
493	>	for (Integer o : ints)
494	>	assertSame(o, q.poll());
495	>	assertTrue(q.isEmpty());
496		}
497
498		/**
499	<	* toArray(incompatible array type) throws CCE
499	>	* toArray(incompatible array type) throws ArrayStoreException
500		*/
501		public void testToArray1_BadArg() {
502		LinkedTransferQueue q = populatedQueue(SIZE);
503		try {
504	<	Object o[] = q.toArray(new String[10]);
504	>	q.toArray(new String[10]);
505		shouldThrow();
506		} catch (ArrayStoreException success) {}
507		}
#	Line 594 | Line 512 | public class LinkedTransferQueueTest ext
512		public void testIterator() throws InterruptedException {
513		LinkedTransferQueue q = populatedQueue(SIZE);
514		Iterator it = q.iterator();
515	<	int i = 0;
516	<	while (it.hasNext()) {
517	<	assertEquals(it.next(), i++);
600	<	}
515	>	int i;
516	>	for (i = 0; it.hasNext(); i++)
517	>	assertTrue(q.contains(it.next()));
518		assertEquals(i, SIZE);
519	+	assertIteratorExhausted(it);
520	+
521	+	it = q.iterator();
522	+	for (i = 0; it.hasNext(); i++)
523	+	assertEquals(it.next(), q.take());
524	+	assertEquals(i, SIZE);
525	+	assertIteratorExhausted(it);
526	+	}
527	+
528	+	/**
529	+	* iterator of empty collection has no elements
530	+	*/
531	+	public void testEmptyIterator() {
532	+	assertIteratorExhausted(new LinkedTransferQueue().iterator());
533		}
534
535		/**
#	Line 615 | Line 546 | public class LinkedTransferQueueTest ext
546		it.remove();
547
548		it = q.iterator();
549	<	assertEquals(it.next(), one);
550	<	assertEquals(it.next(), three);
549	>	assertSame(it.next(), one);
550	>	assertSame(it.next(), three);
551		assertFalse(it.hasNext());
552		}
553
#	Line 624 | Line 555 | public class LinkedTransferQueueTest ext
555		* iterator ordering is FIFO
556		*/
557		public void testIteratorOrdering() {
558	<	final LinkedTransferQueue<Integer> q
628	<	= new LinkedTransferQueue<Integer>();
558	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
559		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
560		q.add(one);
561		q.add(two);
#	Line 660 | Line 590 | public class LinkedTransferQueueTest ext
590		LinkedTransferQueue q = populatedQueue(SIZE);
591		String s = q.toString();
592		for (int i = 0; i < SIZE; ++i) {
593	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
593	>	assertTrue(s.contains(String.valueOf(i)));
594		}
595		}
596
#	Line 669 | Line 599 | public class LinkedTransferQueueTest ext
599		*/
600		public void testOfferInExecutor() {
601		final LinkedTransferQueue q = new LinkedTransferQueue();
602	<	q.add(one);
603	<	q.add(two);
604	<	ExecutorService executor = Executors.newFixedThreadPool(2);
605	<
606	<	executor.execute(new CheckedRunnable() {
607	<	void realRun() {
608	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS,
609	<	MILLISECONDS));
610	<	}});
611	<
612	<	executor.execute(new CheckedRunnable() {
683	<	void realRun() throws InterruptedException {
684	<	Thread.sleep(SMALL_DELAY_MS);
685	<	threadAssertEquals(one, q.take());
686	<	}});
602	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
603	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
604	>	try (PoolCleaner cleaner = cleaner(executor)) {
605	>
606	>	executor.execute(new CheckedRunnable() {
607	>	public void realRun() throws InterruptedException {
608	>	threadsStarted.await();
609	>	long startTime = System.nanoTime();
610	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
611	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
612	>	}});
613
614	<	joinPool(executor);
614	>	executor.execute(new CheckedRunnable() {
615	>	public void realRun() throws InterruptedException {
616	>	threadsStarted.await();
617	>	assertSame(one, q.take());
618	>	checkEmpty(q);
619	>	}});
620	>	}
621		}
622
623		/**
#	Line 693 | Line 625 | public class LinkedTransferQueueTest ext
625		*/
626		public void testPollInExecutor() {
627		final LinkedTransferQueue q = new LinkedTransferQueue();
628	<	ExecutorService executor = Executors.newFixedThreadPool(2);
629	<
630	<	executor.execute(new CheckedRunnable() {
631	<	void realRun() throws InterruptedException {
632	<	threadAssertNull(q.poll());
633	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS,
634	<	MILLISECONDS));
635	<	threadAssertTrue(q.isEmpty());
636	<	}});
637	<
638	<	executor.execute(new CheckedRunnable() {
639	<	void realRun() throws InterruptedException {
640	<	Thread.sleep(SMALL_DELAY_MS);
709	<	q.put(one);
710	<	}});
628	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
629	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
630	>	try (PoolCleaner cleaner = cleaner(executor)) {
631	>
632	>	executor.execute(new CheckedRunnable() {
633	>	public void realRun() throws InterruptedException {
634	>	assertNull(q.poll());
635	>	threadsStarted.await();
636	>	long startTime = System.nanoTime();
637	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
638	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
639	>	checkEmpty(q);
640	>	}});
641
642	<	joinPool(executor);
642	>	executor.execute(new CheckedRunnable() {
643	>	public void realRun() throws InterruptedException {
644	>	threadsStarted.await();
645	>	q.put(one);
646	>	}});
647	>	}
648		}
649
650		/**
651	<	* A deserialized serialized queue has same elements in same order
651	>	* A deserialized/reserialized queue has same elements in same order
652		*/
653		public void testSerialization() throws Exception {
654	<	LinkedTransferQueue q = populatedQueue(SIZE);
655	<
721	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
722	<	ObjectOutputStream out
723	<	= new ObjectOutputStream(new BufferedOutputStream(bout));
724	<	out.writeObject(q);
725	<	out.close();
654	>	Queue x = populatedQueue(SIZE);
655	>	Queue y = serialClone(x);
656
657	<	ByteArrayInputStream bin
658	<	= new ByteArrayInputStream(bout.toByteArray());
659	<	ObjectInputStream in
660	<	= new ObjectInputStream(new BufferedInputStream(bin));
661	<	LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
662	<
663	<	assertEquals(q.size(), r.size());
734	<	while (!q.isEmpty()) {
735	<	assertEquals(q.remove(), r.remove());
657	>	assertNotSame(y, x);
658	>	assertEquals(x.size(), y.size());
659	>	assertEquals(x.toString(), y.toString());
660	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
661	>	while (!x.isEmpty()) {
662	>	assertFalse(y.isEmpty());
663	>	assertEquals(x.remove(), y.remove());
664		}
665	<	}
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) {}
665	>	assertTrue(y.isEmpty());
666		}
667
668		/**
#	Line 765 | Line 672 | public class LinkedTransferQueueTest ext
672		LinkedTransferQueue q = populatedQueue(SIZE);
673		ArrayList l = new ArrayList();
674		q.drainTo(l);
675	<	assertEquals(q.size(), 0);
676	<	assertEquals(l.size(), SIZE);
675	>	assertEquals(0, q.size());
676	>	assertEquals(SIZE, l.size());
677		for (int i = 0; i < SIZE; ++i) {
678	<	assertEquals(l.get(i), i);
678	>	assertEquals(i, l.get(i));
679		}
680		q.add(zero);
681		q.add(one);
#	Line 777 | Line 684 | public class LinkedTransferQueueTest ext
684		assertTrue(q.contains(one));
685		l.clear();
686		q.drainTo(l);
687	<	assertEquals(q.size(), 0);
688	<	assertEquals(l.size(), 2);
687	>	assertEquals(0, q.size());
688	>	assertEquals(2, l.size());
689		for (int i = 0; i < 2; ++i) {
690	<	assertEquals(l.get(i), i);
690	>	assertEquals(i, l.get(i));
691		}
692		}
693
#	Line 790 | Line 697 | public class LinkedTransferQueueTest ext
697		public void testDrainToWithActivePut() throws InterruptedException {
698		final LinkedTransferQueue q = populatedQueue(SIZE);
699		Thread t = newStartedThread(new CheckedRunnable() {
700	<	void realRun() {
700	>	public void realRun() {
701		q.put(SIZE + 1);
702		}});
703		ArrayList l = new ArrayList();
704		q.drainTo(l);
705		assertTrue(l.size() >= SIZE);
706	<	for (int i = 0; i < SIZE; ++i) {
707	<	assertEquals(l.get(i), i);
708	<	}
802	<	t.join();
706	>	for (int i = 0; i < SIZE; ++i)
707	>	assertEquals(i, l.get(i));
708	>	awaitTermination(t);
709		assertTrue(q.size() + l.size() >= SIZE);
710		}
711
712		/**
713	<	* 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
713	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
714		*/
715		public void testDrainToN() {
716		LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 837 | Line 721 | public class LinkedTransferQueueTest ext
721		ArrayList l = new ArrayList();
722		q.drainTo(l, i);
723		int k = (i < SIZE) ? i : SIZE;
724	<	assertEquals(l.size(), k);
725	<	assertEquals(q.size(), SIZE - k);
726	<	for (int j = 0; j < k; ++j) {
727	<	assertEquals(l.get(j), j);
728	<	}
845	<	while (q.poll() != null)
846	<	;
724	>	assertEquals(k, l.size());
725	>	assertEquals(SIZE - k, q.size());
726	>	for (int j = 0; j < k; ++j)
727	>	assertEquals(j, l.get(j));
728	>	do {} while (q.poll() != null);
729		}
730		}
731
#	Line 853 | Line 735 | public class LinkedTransferQueueTest ext
735		*/
736		public void testWaitingConsumer() throws InterruptedException {
737		final LinkedTransferQueue q = new LinkedTransferQueue();
738	<	assertEquals(q.getWaitingConsumerCount(), 0);
738	>	assertEquals(0, q.getWaitingConsumerCount());
739		assertFalse(q.hasWaitingConsumer());
740	+	final CountDownLatch threadStarted = new CountDownLatch(1);
741
742		Thread t = newStartedThread(new CheckedRunnable() {
743	<	void realRun() throws InterruptedException {
744	<	Thread.sleep(SMALL_DELAY_MS);
745	<	threadAssertTrue(q.hasWaitingConsumer());
746	<	threadAssertEquals(q.getWaitingConsumerCount(), 1);
747	<	threadAssertTrue(q.offer(new Object()));
748	<	threadAssertFalse(q.hasWaitingConsumer());
749	<	threadAssertEquals(q.getWaitingConsumerCount(), 0);
743	>	public void realRun() throws InterruptedException {
744	>	threadStarted.countDown();
745	>	long startTime = System.nanoTime();
746	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
747	>	assertEquals(0, q.getWaitingConsumerCount());
748	>	assertFalse(q.hasWaitingConsumer());
749	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
750		}});
751
752	<	assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) != null);
753	<	assertEquals(q.getWaitingConsumerCount(), 0);
752	>	threadStarted.await();
753	>	Callable<Boolean> oneConsumer
754	>	= new Callable<Boolean>() { public Boolean call() {
755	>	return q.hasWaitingConsumer()
756	>	&& q.getWaitingConsumerCount() == 1; }};
757	>	waitForThreadToEnterWaitState(t, oneConsumer);
758	>
759	>	assertTrue(q.offer(one));
760	>	assertEquals(0, q.getWaitingConsumerCount());
761		assertFalse(q.hasWaitingConsumer());
762	<	t.join();
762	>
763	>	awaitTermination(t);
764		}
765
766		/**
#	Line 884 | Line 775 | public class LinkedTransferQueueTest ext
775		}
776
777		/**
778	<	* transfer waits until a poll occurs. The transfered element
779	<	* is returned by this associated poll.
778	>	* transfer waits until a poll occurs. The transferred element
779	>	* is returned by the associated poll.
780		*/
781		public void testTransfer2() throws InterruptedException {
782	<	final LinkedTransferQueue<Integer> q
783	<	= new LinkedTransferQueue<Integer>();
782	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
783	>	final CountDownLatch threadStarted = new CountDownLatch(1);
784
785		Thread t = newStartedThread(new CheckedRunnable() {
786	<	void realRun() throws InterruptedException {
787	<	q.transfer(SIZE);
788	<	threadAssertTrue(q.isEmpty());
786	>	public void realRun() throws InterruptedException {
787	>	threadStarted.countDown();
788	>	q.transfer(five);
789	>	checkEmpty(q);
790		}});
791
792	<	Thread.sleep(SHORT_DELAY_MS);
793	<	assertEquals(1, q.size());
794	<	assertEquals(SIZE, (int) q.poll());
795	<	assertTrue(q.isEmpty());
796	<	t.join();
792	>	threadStarted.await();
793	>	Callable<Boolean> oneElement
794	>	= new Callable<Boolean>() { public Boolean call() {
795	>	return !q.isEmpty() && q.size() == 1; }};
796	>	waitForThreadToEnterWaitState(t, oneElement);
797	>
798	>	assertSame(five, q.poll());
799	>	checkEmpty(q);
800	>	awaitTermination(t);
801		}
802
803		/**
804		* transfer waits until a poll occurs, and then transfers in fifo order
805		*/
806		public void testTransfer3() throws InterruptedException {
807	<	final LinkedTransferQueue<Integer> q
912	<	= new LinkedTransferQueue<Integer>();
807	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
808
809		Thread first = newStartedThread(new CheckedRunnable() {
810	<	void realRun() throws InterruptedException {
811	<	Integer i = SIZE + 1;
812	<	q.transfer(i);
813	<	threadAssertTrue(!q.contains(i));
919	<	threadAssertEquals(1, q.size());
810	>	public void realRun() throws InterruptedException {
811	>	q.transfer(four);
812	>	assertFalse(q.contains(four));
813	>	assertEquals(1, q.size());
814		}});
815
816		Thread interruptedThread = newStartedThread(
817		new CheckedInterruptedRunnable() {
818	<	void realRun() throws InterruptedException {
819	<	while (q.size() == 0)
818	>	public void realRun() throws InterruptedException {
819	>	while (q.isEmpty())
820		Thread.yield();
821	<	q.transfer(SIZE);
821	>	q.transfer(five);
822		}});
823
824		while (q.size() < 2)
825		Thread.yield();
826		assertEquals(2, q.size());
827	<	assertEquals(SIZE + 1, (int) q.poll());
827	>	assertSame(four, q.poll());
828		first.join();
829		assertEquals(1, q.size());
830		interruptedThread.interrupt();
831		interruptedThread.join();
832	<	assertEquals(0, q.size());
939	<	assertTrue(q.isEmpty());
832	>	checkEmpty(q);
833		}
834
835		/**
#	Line 947 | Line 840 | public class LinkedTransferQueueTest ext
840		final LinkedTransferQueue q = new LinkedTransferQueue();
841
842		Thread t = newStartedThread(new CheckedRunnable() {
843	<	void realRun() throws InterruptedException {
843	>	public void realRun() throws InterruptedException {
844		q.transfer(four);
845	<	threadAssertFalse(q.contains(four));
846	<	threadAssertEquals(three, q.poll());
845	>	assertFalse(q.contains(four));
846	>	assertSame(three, q.poll());
847		}});
848
849	<	Thread.sleep(SHORT_DELAY_MS);
849	>	while (q.isEmpty())
850	>	Thread.yield();
851	>	assertFalse(q.isEmpty());
852	>	assertEquals(1, q.size());
853		assertTrue(q.offer(three));
854	<	assertEquals(four, q.poll());
855	<	t.join();
854	>	assertSame(four, q.poll());
855	>	awaitTermination(t);
856		}
857
858		/**
859	<	* transfer waits until a take occurs. The transfered element
860	<	* is returned by this associated take.
859	>	* transfer waits until a take occurs. The transferred element
860	>	* is returned by the associated take.
861		*/
862		public void testTransfer5() throws InterruptedException {
863	<	final LinkedTransferQueue<Integer> q
968	<	= new LinkedTransferQueue<Integer>();
863	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
864
865		Thread t = newStartedThread(new CheckedRunnable() {
866	<	void realRun() throws InterruptedException {
867	<	q.transfer(SIZE);
866	>	public void realRun() throws InterruptedException {
867	>	q.transfer(four);
868		checkEmpty(q);
869		}});
870
871	<	Thread.sleep(SHORT_DELAY_MS);
872	<	assertEquals(SIZE, (int) q.take());
871	>	while (q.isEmpty())
872	>	Thread.yield();
873	>	assertFalse(q.isEmpty());
874	>	assertEquals(1, q.size());
875	>	assertSame(four, q.take());
876		checkEmpty(q);
877	<	t.join();
877	>	awaitTermination(t);
878		}
879
880		/**
881		* tryTransfer(null) throws NullPointerException
882		*/
883		public void testTryTransfer1() {
884	+	final LinkedTransferQueue q = new LinkedTransferQueue();
885		try {
987	–	final LinkedTransferQueue q = new LinkedTransferQueue();
886		q.tryTransfer(null);
887		shouldThrow();
888		} catch (NullPointerException success) {}
#	Line 1010 | Line 908 | public class LinkedTransferQueueTest ext
908		final LinkedTransferQueue q = new LinkedTransferQueue();
909
910		Thread t = newStartedThread(new CheckedRunnable() {
911	<	void realRun() {
911	>	public void realRun() {
912		while (! q.hasWaitingConsumer())
913		Thread.yield();
914	<	threadAssertTrue(q.hasWaitingConsumer());
915	<	threadAssertTrue(q.isEmpty());
916	<	threadAssertTrue(q.size() == 0);
1019	<	threadAssertTrue(q.tryTransfer(hotPotato));
914	>	assertTrue(q.hasWaitingConsumer());
915	>	checkEmpty(q);
916	>	assertTrue(q.tryTransfer(hotPotato));
917		}});
918
919	<	assertTrue(q.poll(MEDIUM_DELAY_MS, MILLISECONDS) == hotPotato);
919	>	long startTime = System.nanoTime();
920	>	assertSame(hotPotato, q.poll(LONG_DELAY_MS, MILLISECONDS));
921	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
922		checkEmpty(q);
923	<	t.join();
923	>	awaitTermination(t);
924		}
925
926		/**
#	Line 1033 | Line 932 | public class LinkedTransferQueueTest ext
932		final LinkedTransferQueue q = new LinkedTransferQueue();
933
934		Thread t = newStartedThread(new CheckedRunnable() {
935	<	void realRun() {
935	>	public void realRun() {
936		while (! q.hasWaitingConsumer())
937		Thread.yield();
938	<	threadAssertTrue(q.hasWaitingConsumer());
939	<	threadAssertTrue(q.isEmpty());
940	<	threadAssertTrue(q.size() == 0);
1042	<	threadAssertTrue(q.tryTransfer(hotPotato));
938	>	assertTrue(q.hasWaitingConsumer());
939	>	checkEmpty(q);
940	>	assertTrue(q.tryTransfer(hotPotato));
941		}});
942
943	<	assertTrue(q.take() == hotPotato);
943	>	assertSame(q.take(), hotPotato);
944		checkEmpty(q);
945	<	t.join();
945	>	awaitTermination(t);
946		}
947
948		/**
949	<	* tryTransfer waits the amount given if interrupted, and
1052	<	* throws interrupted exception
949	>	* tryTransfer blocks interruptibly if no takers
950		*/
951		public void testTryTransfer5() throws InterruptedException {
952		final LinkedTransferQueue q = new LinkedTransferQueue();
953	+	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
954	+	assertTrue(q.isEmpty());
955	+
956	+	Thread t = newStartedThread(new CheckedRunnable() {
957	+	public void realRun() throws InterruptedException {
958	+	long startTime = System.nanoTime();
959	+	Thread.currentThread().interrupt();
960	+	try {
961	+	q.tryTransfer(new Object(), randomTimeout(), randomTimeUnit());
962	+	shouldThrow();
963	+	} catch (InterruptedException success) {}
964	+	assertFalse(Thread.interrupted());
965	+
966	+	pleaseInterrupt.countDown();
967	+	try {
968	+	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
969	+	shouldThrow();
970	+	} catch (InterruptedException success) {}
971	+	assertFalse(Thread.interrupted());
972
973	<	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
1058	<	void realRun() throws InterruptedException {
1059	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
973	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
974		}});
975
976	<	Thread.sleep(SMALL_DELAY_MS);
977	<	toInterrupt.interrupt();
978	<	toInterrupt.join();
976	>	await(pleaseInterrupt);
977	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
978	>	t.interrupt();
979	>	awaitTermination(t);
980	>	checkEmpty(q);
981		}
982
983		/**
984	<	* tryTransfer gives up after the timeout and return false
984	>	* tryTransfer gives up after the timeout and returns false
985		*/
986		public void testTryTransfer6() throws InterruptedException {
987		final LinkedTransferQueue q = new LinkedTransferQueue();
988
989		Thread t = newStartedThread(new CheckedRunnable() {
990	<	void realRun() throws InterruptedException {
991	<	threadAssertFalse
992	<	(q.tryTransfer(new Object(),
993	<	SHORT_DELAY_MS, MILLISECONDS));
990	>	public void realRun() throws InterruptedException {
991	>	long startTime = System.nanoTime();
992	>	assertFalse(q.tryTransfer(new Object(),
993	>	timeoutMillis(), MILLISECONDS));
994	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
995	>	checkEmpty(q);
996		}});
997
998	<	Thread.sleep(SMALL_DELAY_MS);
998	>	awaitTermination(t);
999		checkEmpty(q);
1082	–	t.join();
1000		}
1001
1002		/**
#	Line 1091 | Line 1008 | public class LinkedTransferQueueTest ext
1008		assertTrue(q.offer(four));
1009
1010		Thread t = newStartedThread(new CheckedRunnable() {
1011	<	void realRun() throws InterruptedException {
1012	<	threadAssertTrue(q.tryTransfer(five,
1013	<	MEDIUM_DELAY_MS, MILLISECONDS));
1014	<	threadAssertTrue(q.isEmpty());
1011	>	public void realRun() throws InterruptedException {
1012	>	long startTime = System.nanoTime();
1013	>	assertTrue(q.tryTransfer(five, LONG_DELAY_MS, MILLISECONDS));
1014	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1015	>	checkEmpty(q);
1016		}});
1017
1018	<	Thread.sleep(SHORT_DELAY_MS);
1018	>	while (q.size() != 2)
1019	>	Thread.yield();
1020		assertEquals(2, q.size());
1021	<	assertEquals(four, q.poll());
1022	<	assertEquals(five, q.poll());
1021	>	assertSame(four, q.poll());
1022	>	assertSame(five, q.poll());
1023		checkEmpty(q);
1024	<	t.join();
1024	>	awaitTermination(t);
1025		}
1026
1027		/**
1028	<	* tryTransfer attempts to enqueue into the q and fails returning
1029	<	* false not enqueueing and the successive poll is null
1028	>	* tryTransfer attempts to enqueue into the queue and fails
1029	>	* returning false not enqueueing and the successive poll is null
1030		*/
1031		public void testTryTransfer8() throws InterruptedException {
1032		final LinkedTransferQueue q = new LinkedTransferQueue();
1033		assertTrue(q.offer(four));
1034		assertEquals(1, q.size());
1035	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1035	>	long startTime = System.nanoTime();
1036	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
1037	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
1038		assertEquals(1, q.size());
1039	<	assertEquals(four, q.poll());
1039	>	assertSame(four, q.poll());
1040		assertNull(q.poll());
1041		checkEmpty(q);
1042		}
1043
1044		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1045	<	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1046	<	assertTrue(q.isEmpty());
1045	>	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
1046	>	checkEmpty(q);
1047		for (int i = 0; i < n; i++) {
1048		assertEquals(i, q.size());
1049		assertTrue(q.offer(i));
#	Line 1131 | Line 1052 | public class LinkedTransferQueueTest ext
1052		assertFalse(q.isEmpty());
1053		return q;
1054		}
1055	+
1056	+	/**
1057	+	* remove(null), contains(null) always return false
1058	+	*/
1059	+	public void testNeverContainsNull() {
1060	+	Collection<?>[] qs = {
1061	+	new LinkedTransferQueue<Object>(),
1062	+	populatedQueue(2),
1063	+	};
1064	+
1065	+	for (Collection<?> q : qs) {
1066	+	assertFalse(q.contains(null));
1067	+	assertFalse(q.remove(null));
1068	+	}
1069	+	}
1070		}

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