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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 1.79 by jsr166, Fri Aug 4 03:30:21 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.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	>	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);
357	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
358	<	}
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(LONG_DELAY_MS, MILLISECONDS);
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	>	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(LONG_DELAY_MS, MILLISECONDS));
324		try {
325		q.poll(LONG_DELAY_MS, MILLISECONDS);
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());
480	>	assertSame(o[i], q.poll());
481		}
482		}
483
484		/**
485	<	* toArray(a) contains all elements
485	>	* toArray(a) contains all elements in FIFO order
486		*/
487	<	public void testToArray2() throws InterruptedException {
487	>	public void testToArray2() {
488		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
489		Integer[] ints = new Integer[SIZE];
490	<	ints = q.toArray(ints);
490	>	Integer[] array = q.toArray(ints);
491	>	assertSame(ints, array);
492		for (int i = 0; i < ints.length; i++) {
493	<	assertEquals(ints[i], q.take());
493	>	assertSame(ints[i], q.poll());
494		}
495		}
496
497		/**
498	<	* toArray(null) throws NullPointerException
571	<	*/
572	<	public void testToArray_BadArg() {
573	<	LinkedTransferQueue q = populatedQueue(SIZE);
574	<	try {
575	<	Object o[] = q.toArray(null);
576	<	shouldThrow();
577	<	} catch (NullPointerException success) {}
578	<	}
579	<
580	<	/**
581	<	* toArray(incompatible array type) throws CCE
498	>	* toArray(incompatible array type) throws ArrayStoreException
499		*/
500		public void testToArray1_BadArg() {
501		LinkedTransferQueue q = populatedQueue(SIZE);
502		try {
503	<	Object o[] = q.toArray(new String[10]);
503	>	q.toArray(new String[10]);
504		shouldThrow();
505		} catch (ArrayStoreException success) {}
506		}
#	Line 594 | Line 511 | public class LinkedTransferQueueTest ext
511		public void testIterator() throws InterruptedException {
512		LinkedTransferQueue q = populatedQueue(SIZE);
513		Iterator it = q.iterator();
514	<	int i = 0;
515	<	while (it.hasNext()) {
516	<	assertEquals(it.next(), i++);
600	<	}
514	>	int i;
515	>	for (i = 0; it.hasNext(); i++)
516	>	assertTrue(q.contains(it.next()));
517		assertEquals(i, SIZE);
518	+	assertIteratorExhausted(it);
519	+
520	+	it = q.iterator();
521	+	for (i = 0; it.hasNext(); i++)
522	+	assertEquals(it.next(), q.take());
523	+	assertEquals(i, SIZE);
524	+	assertIteratorExhausted(it);
525	+	}
526	+
527	+	/**
528	+	* iterator of empty collection has no elements
529	+	*/
530	+	public void testEmptyIterator() {
531	+	assertIteratorExhausted(new LinkedTransferQueue().iterator());
532		}
533
534		/**
#	Line 615 | Line 545 | public class LinkedTransferQueueTest ext
545		it.remove();
546
547		it = q.iterator();
548	<	assertEquals(it.next(), one);
549	<	assertEquals(it.next(), three);
548	>	assertSame(it.next(), one);
549	>	assertSame(it.next(), three);
550		assertFalse(it.hasNext());
551		}
552
#	Line 624 | Line 554 | public class LinkedTransferQueueTest ext
554		* iterator ordering is FIFO
555		*/
556		public void testIteratorOrdering() {
557	<	final LinkedTransferQueue<Integer> q
628	<	= new LinkedTransferQueue<Integer>();
557	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
558		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
559		q.add(one);
560		q.add(two);
#	Line 660 | Line 589 | public class LinkedTransferQueueTest ext
589		LinkedTransferQueue q = populatedQueue(SIZE);
590		String s = q.toString();
591		for (int i = 0; i < SIZE; ++i) {
592	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
592	>	assertTrue(s.contains(String.valueOf(i)));
593		}
594		}
595
#	Line 669 | Line 598 | public class LinkedTransferQueueTest ext
598		*/
599		public void testOfferInExecutor() {
600		final LinkedTransferQueue q = new LinkedTransferQueue();
601	<	q.add(one);
602	<	q.add(two);
603	<	ExecutorService executor = Executors.newFixedThreadPool(2);
604	<
605	<	executor.execute(new CheckedRunnable() {
606	<	void realRun() {
607	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS,
608	<	MILLISECONDS));
609	<	}});
610	<
611	<	executor.execute(new CheckedRunnable() {
683	<	void realRun() throws InterruptedException {
684	<	Thread.sleep(SMALL_DELAY_MS);
685	<	threadAssertEquals(one, q.take());
686	<	}});
601	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
602	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
603	>	try (PoolCleaner cleaner = cleaner(executor)) {
604	>
605	>	executor.execute(new CheckedRunnable() {
606	>	public void realRun() throws InterruptedException {
607	>	threadsStarted.await();
608	>	long startTime = System.nanoTime();
609	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
610	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
611	>	}});
612
613	<	joinPool(executor);
613	>	executor.execute(new CheckedRunnable() {
614	>	public void realRun() throws InterruptedException {
615	>	threadsStarted.await();
616	>	assertSame(one, q.take());
617	>	checkEmpty(q);
618	>	}});
619	>	}
620		}
621
622		/**
#	Line 693 | Line 624 | public class LinkedTransferQueueTest ext
624		*/
625		public void testPollInExecutor() {
626		final LinkedTransferQueue q = new LinkedTransferQueue();
627	<	ExecutorService executor = Executors.newFixedThreadPool(2);
628	<
629	<	executor.execute(new CheckedRunnable() {
630	<	void realRun() throws InterruptedException {
631	<	threadAssertNull(q.poll());
632	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS,
633	<	MILLISECONDS));
634	<	threadAssertTrue(q.isEmpty());
635	<	}});
636	<
637	<	executor.execute(new CheckedRunnable() {
638	<	void realRun() throws InterruptedException {
639	<	Thread.sleep(SMALL_DELAY_MS);
709	<	q.put(one);
710	<	}});
627	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
628	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
629	>	try (PoolCleaner cleaner = cleaner(executor)) {
630	>
631	>	executor.execute(new CheckedRunnable() {
632	>	public void realRun() throws InterruptedException {
633	>	assertNull(q.poll());
634	>	threadsStarted.await();
635	>	long startTime = System.nanoTime();
636	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
637	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
638	>	checkEmpty(q);
639	>	}});
640
641	<	joinPool(executor);
641	>	executor.execute(new CheckedRunnable() {
642	>	public void realRun() throws InterruptedException {
643	>	threadsStarted.await();
644	>	q.put(one);
645	>	}});
646	>	}
647		}
648
649		/**
650	<	* A deserialized serialized queue has same elements in same order
650	>	* A deserialized/reserialized queue has same elements in same order
651		*/
652		public void testSerialization() throws Exception {
653	<	LinkedTransferQueue q = populatedQueue(SIZE);
653	>	Queue x = populatedQueue(SIZE);
654	>	Queue y = serialClone(x);
655
656	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
657	<	ObjectOutputStream out
658	<	= new ObjectOutputStream(new BufferedOutputStream(bout));
659	<	out.writeObject(q);
660	<	out.close();
661	<
662	<	ByteArrayInputStream bin
728	<	= new ByteArrayInputStream(bout.toByteArray());
729	<	ObjectInputStream in
730	<	= new ObjectInputStream(new BufferedInputStream(bin));
731	<	LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
732	<
733	<	assertEquals(q.size(), r.size());
734	<	while (!q.isEmpty()) {
735	<	assertEquals(q.remove(), r.remove());
656	>	assertNotSame(y, x);
657	>	assertEquals(x.size(), y.size());
658	>	assertEquals(x.toString(), y.toString());
659	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
660	>	while (!x.isEmpty()) {
661	>	assertFalse(y.isEmpty());
662	>	assertEquals(x.remove(), y.remove());
663		}
664	<	}
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) {}
664	>	assertTrue(y.isEmpty());
665		}
666
667		/**
#	Line 765 | Line 671 | public class LinkedTransferQueueTest ext
671		LinkedTransferQueue q = populatedQueue(SIZE);
672		ArrayList l = new ArrayList();
673		q.drainTo(l);
674	<	assertEquals(q.size(), 0);
675	<	assertEquals(l.size(), SIZE);
674	>	assertEquals(0, q.size());
675	>	assertEquals(SIZE, l.size());
676		for (int i = 0; i < SIZE; ++i) {
677	<	assertEquals(l.get(i), i);
677	>	assertEquals(i, l.get(i));
678		}
679		q.add(zero);
680		q.add(one);
#	Line 777 | Line 683 | public class LinkedTransferQueueTest ext
683		assertTrue(q.contains(one));
684		l.clear();
685		q.drainTo(l);
686	<	assertEquals(q.size(), 0);
687	<	assertEquals(l.size(), 2);
686	>	assertEquals(0, q.size());
687	>	assertEquals(2, l.size());
688		for (int i = 0; i < 2; ++i) {
689	<	assertEquals(l.get(i), i);
689	>	assertEquals(i, l.get(i));
690		}
691		}
692
#	Line 790 | Line 696 | public class LinkedTransferQueueTest ext
696		public void testDrainToWithActivePut() throws InterruptedException {
697		final LinkedTransferQueue q = populatedQueue(SIZE);
698		Thread t = newStartedThread(new CheckedRunnable() {
699	<	void realRun() {
699	>	public void realRun() {
700		q.put(SIZE + 1);
701		}});
702		ArrayList l = new ArrayList();
703		q.drainTo(l);
704		assertTrue(l.size() >= SIZE);
705	<	for (int i = 0; i < SIZE; ++i) {
706	<	assertEquals(l.get(i), i);
707	<	}
802	<	t.join();
705	>	for (int i = 0; i < SIZE; ++i)
706	>	assertEquals(i, l.get(i));
707	>	awaitTermination(t);
708		assertTrue(q.size() + l.size() >= SIZE);
709		}
710
711		/**
712	<	* 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
712	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
713		*/
714		public void testDrainToN() {
715		LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 837 | Line 720 | public class LinkedTransferQueueTest ext
720		ArrayList l = new ArrayList();
721		q.drainTo(l, i);
722		int k = (i < SIZE) ? i : SIZE;
723	<	assertEquals(l.size(), k);
724	<	assertEquals(q.size(), SIZE - k);
725	<	for (int j = 0; j < k; ++j) {
726	<	assertEquals(l.get(j), j);
727	<	}
845	<	while (q.poll() != null)
846	<	;
723	>	assertEquals(k, l.size());
724	>	assertEquals(SIZE - k, q.size());
725	>	for (int j = 0; j < k; ++j)
726	>	assertEquals(j, l.get(j));
727	>	do {} while (q.poll() != null);
728		}
729		}
730
#	Line 853 | Line 734 | public class LinkedTransferQueueTest ext
734		*/
735		public void testWaitingConsumer() throws InterruptedException {
736		final LinkedTransferQueue q = new LinkedTransferQueue();
737	<	assertEquals(q.getWaitingConsumerCount(), 0);
737	>	assertEquals(0, q.getWaitingConsumerCount());
738		assertFalse(q.hasWaitingConsumer());
739	+	final CountDownLatch threadStarted = new CountDownLatch(1);
740
741		Thread t = newStartedThread(new CheckedRunnable() {
742	<	void realRun() throws InterruptedException {
743	<	Thread.sleep(SMALL_DELAY_MS);
744	<	threadAssertTrue(q.hasWaitingConsumer());
745	<	threadAssertEquals(q.getWaitingConsumerCount(), 1);
746	<	threadAssertTrue(q.offer(new Object()));
747	<	threadAssertFalse(q.hasWaitingConsumer());
748	<	threadAssertEquals(q.getWaitingConsumerCount(), 0);
742	>	public void realRun() throws InterruptedException {
743	>	threadStarted.countDown();
744	>	long startTime = System.nanoTime();
745	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
746	>	assertEquals(0, q.getWaitingConsumerCount());
747	>	assertFalse(q.hasWaitingConsumer());
748	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
749		}});
750
751	<	assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) != null);
752	<	assertEquals(q.getWaitingConsumerCount(), 0);
751	>	threadStarted.await();
752	>	Callable<Boolean> oneConsumer
753	>	= new Callable<Boolean>() { public Boolean call() {
754	>	return q.hasWaitingConsumer()
755	>	&& q.getWaitingConsumerCount() == 1; }};
756	>	waitForThreadToEnterWaitState(t, oneConsumer);
757	>
758	>	assertTrue(q.offer(one));
759	>	assertEquals(0, q.getWaitingConsumerCount());
760		assertFalse(q.hasWaitingConsumer());
761	<	t.join();
761	>
762	>	awaitTermination(t);
763		}
764
765		/**
#	Line 885 | Line 775 | public class LinkedTransferQueueTest ext
775
776		/**
777		* transfer waits until a poll occurs. The transfered element
778	<	* is returned by this associated poll.
778	>	* is returned by the associated poll.
779		*/
780		public void testTransfer2() throws InterruptedException {
781	<	final LinkedTransferQueue<Integer> q
782	<	= new LinkedTransferQueue<Integer>();
781	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
782	>	final CountDownLatch threadStarted = new CountDownLatch(1);
783
784		Thread t = newStartedThread(new CheckedRunnable() {
785	<	void realRun() throws InterruptedException {
786	<	q.transfer(SIZE);
787	<	threadAssertTrue(q.isEmpty());
785	>	public void realRun() throws InterruptedException {
786	>	threadStarted.countDown();
787	>	q.transfer(five);
788	>	checkEmpty(q);
789		}});
790
791	<	Thread.sleep(SHORT_DELAY_MS);
792	<	assertEquals(1, q.size());
793	<	assertEquals(SIZE, (int) q.poll());
794	<	assertTrue(q.isEmpty());
795	<	t.join();
791	>	threadStarted.await();
792	>	Callable<Boolean> oneElement
793	>	= new Callable<Boolean>() { public Boolean call() {
794	>	return !q.isEmpty() && q.size() == 1; }};
795	>	waitForThreadToEnterWaitState(t, oneElement);
796	>
797	>	assertSame(five, q.poll());
798	>	checkEmpty(q);
799	>	awaitTermination(t);
800		}
801
802		/**
803		* transfer waits until a poll occurs, and then transfers in fifo order
804		*/
805		public void testTransfer3() throws InterruptedException {
806	<	final LinkedTransferQueue<Integer> q
912	<	= new LinkedTransferQueue<Integer>();
806	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
807
808		Thread first = newStartedThread(new CheckedRunnable() {
809	<	void realRun() throws InterruptedException {
810	<	Integer i = SIZE + 1;
811	<	q.transfer(i);
812	<	threadAssertTrue(!q.contains(i));
919	<	threadAssertEquals(1, q.size());
809	>	public void realRun() throws InterruptedException {
810	>	q.transfer(four);
811	>	assertFalse(q.contains(four));
812	>	assertEquals(1, q.size());
813		}});
814
815		Thread interruptedThread = newStartedThread(
816		new CheckedInterruptedRunnable() {
817	<	void realRun() throws InterruptedException {
818	<	while (q.size() == 0)
817	>	public void realRun() throws InterruptedException {
818	>	while (q.isEmpty())
819		Thread.yield();
820	<	q.transfer(SIZE);
820	>	q.transfer(five);
821		}});
822
823		while (q.size() < 2)
824		Thread.yield();
825		assertEquals(2, q.size());
826	<	assertEquals(SIZE + 1, (int) q.poll());
826	>	assertSame(four, q.poll());
827		first.join();
828		assertEquals(1, q.size());
829		interruptedThread.interrupt();
830		interruptedThread.join();
831	<	assertEquals(0, q.size());
939	<	assertTrue(q.isEmpty());
831	>	checkEmpty(q);
832		}
833
834		/**
#	Line 947 | Line 839 | public class LinkedTransferQueueTest ext
839		final LinkedTransferQueue q = new LinkedTransferQueue();
840
841		Thread t = newStartedThread(new CheckedRunnable() {
842	<	void realRun() throws InterruptedException {
842	>	public void realRun() throws InterruptedException {
843		q.transfer(four);
844	<	threadAssertFalse(q.contains(four));
845	<	threadAssertEquals(three, q.poll());
844	>	assertFalse(q.contains(four));
845	>	assertSame(three, q.poll());
846		}});
847
848	<	Thread.sleep(SHORT_DELAY_MS);
848	>	while (q.isEmpty())
849	>	Thread.yield();
850	>	assertFalse(q.isEmpty());
851	>	assertEquals(1, q.size());
852		assertTrue(q.offer(three));
853	<	assertEquals(four, q.poll());
854	<	t.join();
853	>	assertSame(four, q.poll());
854	>	awaitTermination(t);
855		}
856
857		/**
858		* transfer waits until a take occurs. The transfered element
859	<	* is returned by this associated take.
859	>	* is returned by the associated take.
860		*/
861		public void testTransfer5() throws InterruptedException {
862	<	final LinkedTransferQueue<Integer> q
968	<	= new LinkedTransferQueue<Integer>();
862	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
863
864		Thread t = newStartedThread(new CheckedRunnable() {
865	<	void realRun() throws InterruptedException {
866	<	q.transfer(SIZE);
865	>	public void realRun() throws InterruptedException {
866	>	q.transfer(four);
867		checkEmpty(q);
868		}});
869
870	<	Thread.sleep(SHORT_DELAY_MS);
871	<	assertEquals(SIZE, (int) q.take());
870	>	while (q.isEmpty())
871	>	Thread.yield();
872	>	assertFalse(q.isEmpty());
873	>	assertEquals(1, q.size());
874	>	assertSame(four, q.take());
875		checkEmpty(q);
876	<	t.join();
876	>	awaitTermination(t);
877		}
878
879		/**
880		* tryTransfer(null) throws NullPointerException
881		*/
882		public void testTryTransfer1() {
883	+	final LinkedTransferQueue q = new LinkedTransferQueue();
884		try {
987	–	final LinkedTransferQueue q = new LinkedTransferQueue();
885		q.tryTransfer(null);
886		shouldThrow();
887		} catch (NullPointerException success) {}
#	Line 1010 | Line 907 | public class LinkedTransferQueueTest ext
907		final LinkedTransferQueue q = new LinkedTransferQueue();
908
909		Thread t = newStartedThread(new CheckedRunnable() {
910	<	void realRun() {
910	>	public void realRun() {
911		while (! q.hasWaitingConsumer())
912		Thread.yield();
913	<	threadAssertTrue(q.hasWaitingConsumer());
914	<	threadAssertTrue(q.isEmpty());
915	<	threadAssertTrue(q.size() == 0);
1019	<	threadAssertTrue(q.tryTransfer(hotPotato));
913	>	assertTrue(q.hasWaitingConsumer());
914	>	checkEmpty(q);
915	>	assertTrue(q.tryTransfer(hotPotato));
916		}});
917
918	<	assertTrue(q.poll(MEDIUM_DELAY_MS, MILLISECONDS) == hotPotato);
918	>	long startTime = System.nanoTime();
919	>	assertSame(hotPotato, q.poll(LONG_DELAY_MS, MILLISECONDS));
920	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
921		checkEmpty(q);
922	<	t.join();
922	>	awaitTermination(t);
923		}
924
925		/**
#	Line 1033 | Line 931 | public class LinkedTransferQueueTest ext
931		final LinkedTransferQueue q = new LinkedTransferQueue();
932
933		Thread t = newStartedThread(new CheckedRunnable() {
934	<	void realRun() {
934	>	public void realRun() {
935		while (! q.hasWaitingConsumer())
936		Thread.yield();
937	<	threadAssertTrue(q.hasWaitingConsumer());
938	<	threadAssertTrue(q.isEmpty());
939	<	threadAssertTrue(q.size() == 0);
1042	<	threadAssertTrue(q.tryTransfer(hotPotato));
937	>	assertTrue(q.hasWaitingConsumer());
938	>	checkEmpty(q);
939	>	assertTrue(q.tryTransfer(hotPotato));
940		}});
941
942	<	assertTrue(q.take() == hotPotato);
942	>	assertSame(q.take(), hotPotato);
943		checkEmpty(q);
944	<	t.join();
944	>	awaitTermination(t);
945		}
946
947		/**
948	<	* tryTransfer waits the amount given if interrupted, and
1052	<	* throws interrupted exception
948	>	* tryTransfer blocks interruptibly if no takers
949		*/
950		public void testTryTransfer5() throws InterruptedException {
951		final LinkedTransferQueue q = new LinkedTransferQueue();
952	+	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
953	+	assertTrue(q.isEmpty());
954
955	<	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
956	<	void realRun() throws InterruptedException {
957	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
955	>	Thread t = newStartedThread(new CheckedRunnable() {
956	>	public void realRun() throws InterruptedException {
957	>	long startTime = System.nanoTime();
958	>	Thread.currentThread().interrupt();
959	>	try {
960	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
961	>	shouldThrow();
962	>	} catch (InterruptedException success) {}
963	>	assertFalse(Thread.interrupted());
964	>
965	>	pleaseInterrupt.countDown();
966	>	try {
967	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
968	>	shouldThrow();
969	>	} catch (InterruptedException success) {}
970	>	assertFalse(Thread.interrupted());
971	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
972		}});
973
974	<	Thread.sleep(SMALL_DELAY_MS);
975	<	toInterrupt.interrupt();
976	<	toInterrupt.join();
974	>	await(pleaseInterrupt);
975	>	assertThreadBlocks(t, Thread.State.TIMED_WAITING);
976	>	t.interrupt();
977	>	awaitTermination(t);
978	>	checkEmpty(q);
979		}
980
981		/**
982	<	* tryTransfer gives up after the timeout and return false
982	>	* tryTransfer gives up after the timeout and returns false
983		*/
984		public void testTryTransfer6() throws InterruptedException {
985		final LinkedTransferQueue q = new LinkedTransferQueue();
986
987		Thread t = newStartedThread(new CheckedRunnable() {
988	<	void realRun() throws InterruptedException {
989	<	threadAssertFalse
990	<	(q.tryTransfer(new Object(),
991	<	SHORT_DELAY_MS, MILLISECONDS));
988	>	public void realRun() throws InterruptedException {
989	>	long startTime = System.nanoTime();
990	>	assertFalse(q.tryTransfer(new Object(),
991	>	timeoutMillis(), MILLISECONDS));
992	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
993	>	checkEmpty(q);
994		}});
995
996	<	Thread.sleep(SMALL_DELAY_MS);
996	>	awaitTermination(t);
997		checkEmpty(q);
1082	–	t.join();
998		}
999
1000		/**
#	Line 1091 | Line 1006 | public class LinkedTransferQueueTest ext
1006		assertTrue(q.offer(four));
1007
1008		Thread t = newStartedThread(new CheckedRunnable() {
1009	<	void realRun() throws InterruptedException {
1010	<	threadAssertTrue(q.tryTransfer(five,
1011	<	MEDIUM_DELAY_MS, MILLISECONDS));
1012	<	threadAssertTrue(q.isEmpty());
1009	>	public void realRun() throws InterruptedException {
1010	>	long startTime = System.nanoTime();
1011	>	assertTrue(q.tryTransfer(five, LONG_DELAY_MS, MILLISECONDS));
1012	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1013	>	checkEmpty(q);
1014		}});
1015
1016	<	Thread.sleep(SHORT_DELAY_MS);
1016	>	while (q.size() != 2)
1017	>	Thread.yield();
1018		assertEquals(2, q.size());
1019	<	assertEquals(four, q.poll());
1020	<	assertEquals(five, q.poll());
1019	>	assertSame(four, q.poll());
1020	>	assertSame(five, q.poll());
1021		checkEmpty(q);
1022	<	t.join();
1022	>	awaitTermination(t);
1023		}
1024
1025		/**
1026	<	* tryTransfer attempts to enqueue into the q and fails returning
1027	<	* false not enqueueing and the successive poll is null
1026	>	* tryTransfer attempts to enqueue into the queue and fails
1027	>	* returning false not enqueueing and the successive poll is null
1028		*/
1029		public void testTryTransfer8() throws InterruptedException {
1030		final LinkedTransferQueue q = new LinkedTransferQueue();
1031		assertTrue(q.offer(four));
1032		assertEquals(1, q.size());
1033	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1033	>	long startTime = System.nanoTime();
1034	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
1035	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
1036		assertEquals(1, q.size());
1037	<	assertEquals(four, q.poll());
1037	>	assertSame(four, q.poll());
1038		assertNull(q.poll());
1039		checkEmpty(q);
1040		}
1041
1042		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1043	<	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1044	<	assertTrue(q.isEmpty());
1043	>	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
1044	>	checkEmpty(q);
1045		for (int i = 0; i < n; i++) {
1046		assertEquals(i, q.size());
1047		assertTrue(q.offer(i));
#	Line 1131 | Line 1050 | public class LinkedTransferQueueTest ext
1050		assertFalse(q.isEmpty());
1051		return q;
1052		}
1053	+
1054	+	/**
1055	+	* remove(null), contains(null) always return false
1056	+	*/
1057	+	public void testNeverContainsNull() {
1058	+	Collection<?>[] qs = {
1059	+	new LinkedTransferQueue<Object>(),
1060	+	populatedQueue(2),
1061	+	};
1062	+
1063	+	for (Collection<?> q : qs) {
1064	+	assertFalse(q.contains(null));
1065	+	assertFalse(q.remove(null));
1066	+	}
1067	+	}
1068		}

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