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Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.18 by jsr166, Sat Nov 21 21:00:34 2009 UTC vs.
Revision 1.76 by jsr166, Sun May 14 00:48:20 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 = newStartedThread(new CheckedInterruptedRunnable() {
210	<	void realRun() throws InterruptedException {
211	<	for (int i = 0; i < SIZE; ++i) {
212	<	threadAssertEquals(i, (int) q.take());
213	<	}
214	<	q.take();
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++) 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	<	Thread.sleep(SMALL_DELAY_MS);
228	>
229	>	await(pleaseInterrupt);
230	>	assertThreadBlocks(t, Thread.State.WAITING);
231		t.interrupt();
232	<	t.join();
297	<	checkEmpty(q);
232	>	awaitTermination(t);
233		}
234
235		/**
#	Line 310 | 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 322 | 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 341 | 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);
352	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
353	<	}
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	>	pleaseInterrupt.countDown();
289		try {
290		q.poll(LONG_DELAY_MS, MILLISECONDS);
291		shouldThrow();
292		} catch (InterruptedException success) {}
293	+	assertFalse(Thread.interrupted());
294	+
295	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
296		}});
297
298	<	Thread.sleep(SMALL_DELAY_MS);
298	>	await(pleaseInterrupt);
299	>	assertThreadBlocks(t, Thread.State.TIMED_WAITING);
300		t.interrupt();
301	<	t.join();
301	>	awaitTermination(t);
302		checkEmpty(q);
303		}
304
305		/**
306	<	* timed poll before a delayed offer fails; after offer succeeds;
307	<	* on interruption throws
306	>	* timed poll after thread interrupted throws InterruptedException
307	>	* instead of returning timeout status
308		*/
309	<	public void testTimedPollWithOffer() throws InterruptedException {
310	<	final LinkedTransferQueue q = new LinkedTransferQueue();
311	<	Thread t = new Thread(new CheckedRunnable() {
312	<	void realRun() throws InterruptedException {
313	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
314	<	assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS));
309	>	public void testTimedPollAfterInterrupt() throws InterruptedException {
310	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
311	>	Thread t = newStartedThread(new CheckedRunnable() {
312	>	public void realRun() throws InterruptedException {
313	>	long startTime = System.nanoTime();
314	>	Thread.currentThread().interrupt();
315	>	for (int i = 0; i < SIZE; ++i)
316	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
317		try {
318		q.poll(LONG_DELAY_MS, MILLISECONDS);
319		shouldThrow();
320		} catch (InterruptedException success) {}
321	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
322		}});
323
324	<	Thread.sleep(SMALL_DELAY_MS);
325	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
384	<	t.interrupt();
385	<	t.join();
324	>	awaitTermination(t);
325	>	checkEmpty(q);
326		}
327
328		/**
#	Line 432 | Line 372 | public class LinkedTransferQueueTest ext
372		}
373
374		/**
435	–	* remove(x) removes x and returns true if present
436	–	*/
437	–	public void testRemoveElement() throws InterruptedException {
438	–	LinkedTransferQueue q = populatedQueue(SIZE);
439	–	for (int i = 1; i < SIZE; i += 2) {
440	–	assertTrue(q.remove(i));
441	–	}
442	–	for (int i = 0; i < SIZE; i += 2) {
443	–	assertTrue(q.remove(i));
444	–	assertFalse(q.remove(i + 1));
445	–	}
446	–	checkEmpty(q);
447	–	}
448	–
449	–	/**
375		* An add following remove(x) succeeds
376		*/
377		public void testRemoveElementAndAdd() throws InterruptedException {
#	Line 456 | Line 381 | public class LinkedTransferQueueTest ext
381		assertTrue(q.remove(one));
382		assertTrue(q.remove(two));
383		assertTrue(q.add(three));
384	<	assertTrue(q.take() == three);
384	>	assertSame(q.take(), three);
385		}
386
387		/**
#	Line 492 | Line 417 | public class LinkedTransferQueueTest ext
417		*/
418		public void testContainsAll() {
419		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
420	<	LinkedTransferQueue<Integer> p = new LinkedTransferQueue<Integer>();
420	>	LinkedTransferQueue<Integer> p = new LinkedTransferQueue<>();
421		for (int i = 0; i < SIZE; ++i) {
422		assertTrue(q.containsAll(p));
423		assertFalse(p.containsAll(q));
#	Line 538 | Line 463 | public class LinkedTransferQueueTest ext
463		}
464
465		/**
466	<	* toArray() contains all elements
466	>	* toArray() contains all elements in FIFO order
467		*/
468	<	public void testToArray() throws InterruptedException {
468	>	public void testToArray() {
469		LinkedTransferQueue q = populatedQueue(SIZE);
470		Object[] o = q.toArray();
471		for (int i = 0; i < o.length; i++) {
472	<	assertEquals(o[i], q.take());
472	>	assertSame(o[i], q.poll());
473		}
474		}
475
476		/**
477	<	* toArray(a) contains all elements
477	>	* toArray(a) contains all elements in FIFO order
478		*/
479	<	public void testToArray2() throws InterruptedException {
479	>	public void testToArray2() {
480		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
481		Integer[] ints = new Integer[SIZE];
482	<	ints = q.toArray(ints);
482	>	Integer[] array = q.toArray(ints);
483	>	assertSame(ints, array);
484		for (int i = 0; i < ints.length; i++) {
485	<	assertEquals(ints[i], q.take());
485	>	assertSame(ints[i], q.poll());
486		}
487		}
488
489		/**
490	<	* toArray(null) throws NullPointerException
565	<	*/
566	<	public void testToArray_BadArg() {
567	<	try {
568	<	LinkedTransferQueue q = populatedQueue(SIZE);
569	<	Object o[] = q.toArray(null);
570	<	shouldThrow();
571	<	} catch (NullPointerException success) {}
572	<	}
573	<
574	<	/**
575	<	* toArray(incompatible array type) throws CCE
490	>	* toArray(incompatible array type) throws ArrayStoreException
491		*/
492		public void testToArray1_BadArg() {
493	+	LinkedTransferQueue q = populatedQueue(SIZE);
494		try {
495	<	LinkedTransferQueue q = populatedQueue(SIZE);
580	<	Object o[] = q.toArray(new String[10]);
495	>	q.toArray(new String[10]);
496		shouldThrow();
497		} catch (ArrayStoreException success) {}
498		}
#	Line 588 | Line 503 | public class LinkedTransferQueueTest ext
503		public void testIterator() throws InterruptedException {
504		LinkedTransferQueue q = populatedQueue(SIZE);
505		Iterator it = q.iterator();
506	<	int i = 0;
507	<	while (it.hasNext()) {
508	<	assertEquals(it.next(), i++);
509	<	}
506	>	int i;
507	>	for (i = 0; it.hasNext(); i++)
508	>	assertTrue(q.contains(it.next()));
509	>	assertEquals(i, SIZE);
510	>	assertIteratorExhausted(it);
511	>
512	>	it = q.iterator();
513	>	for (i = 0; it.hasNext(); i++)
514	>	assertEquals(it.next(), q.take());
515		assertEquals(i, SIZE);
516	+	assertIteratorExhausted(it);
517	+	}
518	+
519	+	/**
520	+	* iterator of empty collection has no elements
521	+	*/
522	+	public void testEmptyIterator() {
523	+	assertIteratorExhausted(new LinkedTransferQueue().iterator());
524		}
525
526		/**
#	Line 609 | Line 537 | public class LinkedTransferQueueTest ext
537		it.remove();
538
539		it = q.iterator();
540	<	assertEquals(it.next(), one);
541	<	assertEquals(it.next(), three);
540	>	assertSame(it.next(), one);
541	>	assertSame(it.next(), three);
542		assertFalse(it.hasNext());
543		}
544
#	Line 618 | Line 546 | public class LinkedTransferQueueTest ext
546		* iterator ordering is FIFO
547		*/
548		public void testIteratorOrdering() {
549	<	final LinkedTransferQueue<Integer> q
622	<	= new LinkedTransferQueue<Integer>();
549	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
550		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
551		q.add(one);
552		q.add(two);
#	Line 654 | Line 581 | public class LinkedTransferQueueTest ext
581		LinkedTransferQueue q = populatedQueue(SIZE);
582		String s = q.toString();
583		for (int i = 0; i < SIZE; ++i) {
584	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
584	>	assertTrue(s.contains(String.valueOf(i)));
585		}
586		}
587
#	Line 663 | Line 590 | public class LinkedTransferQueueTest ext
590		*/
591		public void testOfferInExecutor() {
592		final LinkedTransferQueue q = new LinkedTransferQueue();
593	<	q.add(one);
594	<	q.add(two);
595	<	ExecutorService executor = Executors.newFixedThreadPool(2);
596	<
597	<	executor.execute(new CheckedRunnable() {
598	<	void realRun() {
599	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS,
600	<	MILLISECONDS));
601	<	}});
602	<
603	<	executor.execute(new CheckedRunnable() {
677	<	void realRun() throws InterruptedException {
678	<	Thread.sleep(SMALL_DELAY_MS);
679	<	threadAssertEquals(one, q.take());
680	<	}});
593	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
594	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
595	>	try (PoolCleaner cleaner = cleaner(executor)) {
596	>
597	>	executor.execute(new CheckedRunnable() {
598	>	public void realRun() throws InterruptedException {
599	>	threadsStarted.await();
600	>	long startTime = System.nanoTime();
601	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
602	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
603	>	}});
604
605	<	joinPool(executor);
605	>	executor.execute(new CheckedRunnable() {
606	>	public void realRun() throws InterruptedException {
607	>	threadsStarted.await();
608	>	assertSame(one, q.take());
609	>	checkEmpty(q);
610	>	}});
611	>	}
612		}
613
614		/**
#	Line 687 | Line 616 | public class LinkedTransferQueueTest ext
616		*/
617		public void testPollInExecutor() {
618		final LinkedTransferQueue q = new LinkedTransferQueue();
619	<	ExecutorService executor = Executors.newFixedThreadPool(2);
620	<
621	<	executor.execute(new CheckedRunnable() {
622	<	void realRun() throws InterruptedException {
623	<	threadAssertNull(q.poll());
624	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS,
625	<	MILLISECONDS));
626	<	threadAssertTrue(q.isEmpty());
627	<	}});
628	<
629	<	executor.execute(new CheckedRunnable() {
630	<	void realRun() throws InterruptedException {
631	<	Thread.sleep(SMALL_DELAY_MS);
703	<	q.put(one);
704	<	}});
619	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
620	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
621	>	try (PoolCleaner cleaner = cleaner(executor)) {
622	>
623	>	executor.execute(new CheckedRunnable() {
624	>	public void realRun() throws InterruptedException {
625	>	assertNull(q.poll());
626	>	threadsStarted.await();
627	>	long startTime = System.nanoTime();
628	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
629	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
630	>	checkEmpty(q);
631	>	}});
632
633	<	joinPool(executor);
633	>	executor.execute(new CheckedRunnable() {
634	>	public void realRun() throws InterruptedException {
635	>	threadsStarted.await();
636	>	q.put(one);
637	>	}});
638	>	}
639		}
640
641		/**
642		* A deserialized serialized queue has same elements in same order
643		*/
644		public void testSerialization() throws Exception {
645	<	LinkedTransferQueue q = populatedQueue(SIZE);
645	>	Queue x = populatedQueue(SIZE);
646	>	Queue y = serialClone(x);
647
648	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
649	<	ObjectOutputStream out
650	<	= new ObjectOutputStream(new BufferedOutputStream(bout));
651	<	out.writeObject(q);
652	<	out.close();
653	<
654	<	ByteArrayInputStream bin
722	<	= new ByteArrayInputStream(bout.toByteArray());
723	<	ObjectInputStream in
724	<	= new ObjectInputStream(new BufferedInputStream(bin));
725	<	LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
726	<
727	<	assertEquals(q.size(), r.size());
728	<	while (!q.isEmpty()) {
729	<	assertEquals(q.remove(), r.remove());
648	>	assertNotSame(y, x);
649	>	assertEquals(x.size(), y.size());
650	>	assertEquals(x.toString(), y.toString());
651	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
652	>	while (!x.isEmpty()) {
653	>	assertFalse(y.isEmpty());
654	>	assertEquals(x.remove(), y.remove());
655		}
656	<	}
732	<
733	<	/**
734	<	* drainTo(null) throws NullPointerException
735	<	*/
736	<	public void testDrainToNull() {
737	<	LinkedTransferQueue q = populatedQueue(SIZE);
738	<	try {
739	<	q.drainTo(null);
740	<	shouldThrow();
741	<	} catch (NullPointerException success) {}
742	<	}
743	<
744	<	/**
745	<	* drainTo(this) throws IllegalArgumentException
746	<	*/
747	<	public void testDrainToSelf() {
748	<	LinkedTransferQueue q = populatedQueue(SIZE);
749	<	try {
750	<	q.drainTo(q);
751	<	shouldThrow();
752	<	} catch (IllegalArgumentException success) {}
656	>	assertTrue(y.isEmpty());
657		}
658
659		/**
#	Line 759 | Line 663 | public class LinkedTransferQueueTest ext
663		LinkedTransferQueue q = populatedQueue(SIZE);
664		ArrayList l = new ArrayList();
665		q.drainTo(l);
666	<	assertEquals(q.size(), 0);
667	<	assertEquals(l.size(), SIZE);
666	>	assertEquals(0, q.size());
667	>	assertEquals(SIZE, l.size());
668		for (int i = 0; i < SIZE; ++i) {
669	<	assertEquals(l.get(i), i);
669	>	assertEquals(i, l.get(i));
670		}
671		q.add(zero);
672		q.add(one);
#	Line 771 | Line 675 | public class LinkedTransferQueueTest ext
675		assertTrue(q.contains(one));
676		l.clear();
677		q.drainTo(l);
678	<	assertEquals(q.size(), 0);
679	<	assertEquals(l.size(), 2);
678	>	assertEquals(0, q.size());
679	>	assertEquals(2, l.size());
680		for (int i = 0; i < 2; ++i) {
681	<	assertEquals(l.get(i), i);
681	>	assertEquals(i, l.get(i));
682		}
683		}
684
#	Line 784 | Line 688 | public class LinkedTransferQueueTest ext
688		public void testDrainToWithActivePut() throws InterruptedException {
689		final LinkedTransferQueue q = populatedQueue(SIZE);
690		Thread t = newStartedThread(new CheckedRunnable() {
691	<	void realRun() {
691	>	public void realRun() {
692		q.put(SIZE + 1);
693		}});
694		ArrayList l = new ArrayList();
695		q.drainTo(l);
696		assertTrue(l.size() >= SIZE);
697	<	for (int i = 0; i < SIZE; ++i) {
698	<	assertEquals(l.get(i), i);
699	<	}
796	<	t.join();
697	>	for (int i = 0; i < SIZE; ++i)
698	>	assertEquals(i, l.get(i));
699	>	awaitTermination(t);
700		assertTrue(q.size() + l.size() >= SIZE);
701		}
702
703		/**
704	<	* drainTo(null, n) throws NullPointerException
802	<	*/
803	<	public void testDrainToNullN() {
804	<	LinkedTransferQueue q = populatedQueue(SIZE);
805	<	try {
806	<	q.drainTo(null, SIZE);
807	<	shouldThrow();
808	<	} catch (NullPointerException success) {}
809	<	}
810	<
811	<	/**
812	<	* drainTo(this, n) throws IllegalArgumentException
813	<	*/
814	<	public void testDrainToSelfN() {
815	<	LinkedTransferQueue q = populatedQueue(SIZE);
816	<	try {
817	<	q.drainTo(q, SIZE);
818	<	shouldThrow();
819	<	} catch (IllegalArgumentException success) {}
820	<	}
821	<
822	<	/**
823	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
704	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
705		*/
706		public void testDrainToN() {
707		LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 831 | Line 712 | public class LinkedTransferQueueTest ext
712		ArrayList l = new ArrayList();
713		q.drainTo(l, i);
714		int k = (i < SIZE) ? i : SIZE;
715	<	assertEquals(l.size(), k);
716	<	assertEquals(q.size(), SIZE - k);
717	<	for (int j = 0; j < k; ++j) {
718	<	assertEquals(l.get(j), j);
719	<	}
839	<	while (q.poll() != null)
840	<	;
715	>	assertEquals(k, l.size());
716	>	assertEquals(SIZE - k, q.size());
717	>	for (int j = 0; j < k; ++j)
718	>	assertEquals(j, l.get(j));
719	>	do {} while (q.poll() != null);
720		}
721		}
722
#	Line 847 | Line 726 | public class LinkedTransferQueueTest ext
726		*/
727		public void testWaitingConsumer() throws InterruptedException {
728		final LinkedTransferQueue q = new LinkedTransferQueue();
729	<	assertEquals(q.getWaitingConsumerCount(), 0);
729	>	assertEquals(0, q.getWaitingConsumerCount());
730		assertFalse(q.hasWaitingConsumer());
731	+	final CountDownLatch threadStarted = new CountDownLatch(1);
732
733		Thread t = newStartedThread(new CheckedRunnable() {
734	<	void realRun() throws InterruptedException {
735	<	Thread.sleep(SMALL_DELAY_MS);
736	<	threadAssertTrue(q.hasWaitingConsumer());
737	<	threadAssertEquals(q.getWaitingConsumerCount(), 1);
738	<	threadAssertTrue(q.offer(new Object()));
739	<	threadAssertFalse(q.hasWaitingConsumer());
740	<	threadAssertEquals(q.getWaitingConsumerCount(), 0);
734	>	public void realRun() throws InterruptedException {
735	>	threadStarted.countDown();
736	>	long startTime = System.nanoTime();
737	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
738	>	assertEquals(0, q.getWaitingConsumerCount());
739	>	assertFalse(q.hasWaitingConsumer());
740	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
741		}});
742
743	<	assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) != null);
744	<	assertEquals(q.getWaitingConsumerCount(), 0);
743	>	threadStarted.await();
744	>	Callable<Boolean> oneConsumer
745	>	= new Callable<Boolean>() { public Boolean call() {
746	>	return q.hasWaitingConsumer()
747	>	&& q.getWaitingConsumerCount() == 1; }};
748	>	waitForThreadToEnterWaitState(t, oneConsumer);
749	>
750	>	assertTrue(q.offer(one));
751	>	assertEquals(0, q.getWaitingConsumerCount());
752		assertFalse(q.hasWaitingConsumer());
753	<	t.join();
753	>
754	>	awaitTermination(t);
755		}
756
757		/**
#	Line 879 | Line 767 | public class LinkedTransferQueueTest ext
767
768		/**
769		* transfer waits until a poll occurs. The transfered element
770	<	* is returned by this associated poll.
770	>	* is returned by the associated poll.
771		*/
772		public void testTransfer2() throws InterruptedException {
773	<	final LinkedTransferQueue<Integer> q
774	<	= new LinkedTransferQueue<Integer>();
773	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
774	>	final CountDownLatch threadStarted = new CountDownLatch(1);
775
776		Thread t = newStartedThread(new CheckedRunnable() {
777	<	void realRun() throws InterruptedException {
778	<	q.transfer(SIZE);
779	<	threadAssertTrue(q.isEmpty());
777	>	public void realRun() throws InterruptedException {
778	>	threadStarted.countDown();
779	>	q.transfer(five);
780	>	checkEmpty(q);
781		}});
782
783	<	Thread.sleep(SHORT_DELAY_MS);
784	<	assertEquals(1, q.size());
785	<	assertEquals(SIZE, (int) q.poll());
786	<	assertTrue(q.isEmpty());
787	<	t.join();
783	>	threadStarted.await();
784	>	Callable<Boolean> oneElement
785	>	= new Callable<Boolean>() { public Boolean call() {
786	>	return !q.isEmpty() && q.size() == 1; }};
787	>	waitForThreadToEnterWaitState(t, oneElement);
788	>
789	>	assertSame(five, q.poll());
790	>	checkEmpty(q);
791	>	awaitTermination(t);
792		}
793
794		/**
795		* transfer waits until a poll occurs, and then transfers in fifo order
796		*/
797		public void testTransfer3() throws InterruptedException {
798	<	final LinkedTransferQueue<Integer> q
906	<	= new LinkedTransferQueue<Integer>();
798	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
799
800		Thread first = newStartedThread(new CheckedRunnable() {
801	<	void realRun() throws InterruptedException {
802	<	Integer i = SIZE + 1;
803	<	q.transfer(i);
804	<	threadAssertTrue(!q.contains(i));
913	<	threadAssertEquals(1, q.size());
801	>	public void realRun() throws InterruptedException {
802	>	q.transfer(four);
803	>	assertFalse(q.contains(four));
804	>	assertEquals(1, q.size());
805		}});
806
807		Thread interruptedThread = newStartedThread(
808		new CheckedInterruptedRunnable() {
809	<	void realRun() throws InterruptedException {
810	<	while (q.size() == 0)
809	>	public void realRun() throws InterruptedException {
810	>	while (q.isEmpty())
811		Thread.yield();
812	<	q.transfer(SIZE);
812	>	q.transfer(five);
813		}});
814
815		while (q.size() < 2)
816		Thread.yield();
817		assertEquals(2, q.size());
818	<	assertEquals(SIZE + 1, (int) q.poll());
818	>	assertSame(four, q.poll());
819		first.join();
820		assertEquals(1, q.size());
821		interruptedThread.interrupt();
822		interruptedThread.join();
823	<	assertEquals(0, q.size());
933	<	assertTrue(q.isEmpty());
823	>	checkEmpty(q);
824		}
825
826		/**
#	Line 941 | Line 831 | public class LinkedTransferQueueTest ext
831		final LinkedTransferQueue q = new LinkedTransferQueue();
832
833		Thread t = newStartedThread(new CheckedRunnable() {
834	<	void realRun() throws InterruptedException {
834	>	public void realRun() throws InterruptedException {
835		q.transfer(four);
836	<	threadAssertFalse(q.contains(four));
837	<	threadAssertEquals(three, q.poll());
836	>	assertFalse(q.contains(four));
837	>	assertSame(three, q.poll());
838		}});
839
840	<	Thread.sleep(SHORT_DELAY_MS);
840	>	while (q.isEmpty())
841	>	Thread.yield();
842	>	assertFalse(q.isEmpty());
843	>	assertEquals(1, q.size());
844		assertTrue(q.offer(three));
845	<	assertEquals(four, q.poll());
846	<	t.join();
845	>	assertSame(four, q.poll());
846	>	awaitTermination(t);
847		}
848
849		/**
850		* transfer waits until a take occurs. The transfered element
851	<	* is returned by this associated take.
851	>	* is returned by the associated take.
852		*/
853		public void testTransfer5() throws InterruptedException {
854	<	final LinkedTransferQueue<Integer> q
962	<	= new LinkedTransferQueue<Integer>();
854	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
855
856		Thread t = newStartedThread(new CheckedRunnable() {
857	<	void realRun() throws InterruptedException {
858	<	q.transfer(SIZE);
857	>	public void realRun() throws InterruptedException {
858	>	q.transfer(four);
859		checkEmpty(q);
860		}});
861
862	<	Thread.sleep(SHORT_DELAY_MS);
863	<	assertEquals(SIZE, (int) q.take());
862	>	while (q.isEmpty())
863	>	Thread.yield();
864	>	assertFalse(q.isEmpty());
865	>	assertEquals(1, q.size());
866	>	assertSame(four, q.take());
867		checkEmpty(q);
868	<	t.join();
868	>	awaitTermination(t);
869		}
870
871		/**
872		* tryTransfer(null) throws NullPointerException
873		*/
874		public void testTryTransfer1() {
875	+	final LinkedTransferQueue q = new LinkedTransferQueue();
876		try {
981	–	final LinkedTransferQueue q = new LinkedTransferQueue();
877		q.tryTransfer(null);
878		shouldThrow();
879		} catch (NullPointerException success) {}
#	Line 1004 | Line 899 | public class LinkedTransferQueueTest ext
899		final LinkedTransferQueue q = new LinkedTransferQueue();
900
901		Thread t = newStartedThread(new CheckedRunnable() {
902	<	void realRun() {
902	>	public void realRun() {
903		while (! q.hasWaitingConsumer())
904		Thread.yield();
905	<	threadAssertTrue(q.hasWaitingConsumer());
906	<	threadAssertTrue(q.isEmpty());
907	<	threadAssertTrue(q.size() == 0);
1013	<	threadAssertTrue(q.tryTransfer(hotPotato));
905	>	assertTrue(q.hasWaitingConsumer());
906	>	checkEmpty(q);
907	>	assertTrue(q.tryTransfer(hotPotato));
908		}});
909
910	<	assertTrue(q.poll(MEDIUM_DELAY_MS, MILLISECONDS) == hotPotato);
910	>	long startTime = System.nanoTime();
911	>	assertSame(hotPotato, q.poll(LONG_DELAY_MS, MILLISECONDS));
912	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
913		checkEmpty(q);
914	<	t.join();
914	>	awaitTermination(t);
915		}
916
917		/**
#	Line 1027 | Line 923 | public class LinkedTransferQueueTest ext
923		final LinkedTransferQueue q = new LinkedTransferQueue();
924
925		Thread t = newStartedThread(new CheckedRunnable() {
926	<	void realRun() {
926	>	public void realRun() {
927		while (! q.hasWaitingConsumer())
928		Thread.yield();
929	<	threadAssertTrue(q.hasWaitingConsumer());
930	<	threadAssertTrue(q.isEmpty());
931	<	threadAssertTrue(q.size() == 0);
1036	<	threadAssertTrue(q.tryTransfer(hotPotato));
929	>	assertTrue(q.hasWaitingConsumer());
930	>	checkEmpty(q);
931	>	assertTrue(q.tryTransfer(hotPotato));
932		}});
933
934	<	assertTrue(q.take() == hotPotato);
934	>	assertSame(q.take(), hotPotato);
935		checkEmpty(q);
936	<	t.join();
936	>	awaitTermination(t);
937		}
938
939		/**
940	<	* tryTransfer waits the amount given if interrupted, and
1046	<	* throws interrupted exception
940	>	* tryTransfer blocks interruptibly if no takers
941		*/
942		public void testTryTransfer5() throws InterruptedException {
943		final LinkedTransferQueue q = new LinkedTransferQueue();
944	+	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
945	+	assertTrue(q.isEmpty());
946
947	<	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
948	<	void realRun() throws InterruptedException {
949	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
947	>	Thread t = newStartedThread(new CheckedRunnable() {
948	>	public void realRun() throws InterruptedException {
949	>	long startTime = System.nanoTime();
950	>	Thread.currentThread().interrupt();
951	>	try {
952	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
953	>	shouldThrow();
954	>	} catch (InterruptedException success) {}
955	>	assertFalse(Thread.interrupted());
956	>
957	>	pleaseInterrupt.countDown();
958	>	try {
959	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
960	>	shouldThrow();
961	>	} catch (InterruptedException success) {}
962	>	assertFalse(Thread.interrupted());
963	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
964		}});
965
966	<	Thread.sleep(SMALL_DELAY_MS);
967	<	toInterrupt.interrupt();
968	<	toInterrupt.join();
966	>	await(pleaseInterrupt);
967	>	assertThreadBlocks(t, Thread.State.TIMED_WAITING);
968	>	t.interrupt();
969	>	awaitTermination(t);
970	>	checkEmpty(q);
971		}
972
973		/**
974	<	* tryTransfer gives up after the timeout and return false
974	>	* tryTransfer gives up after the timeout and returns false
975		*/
976		public void testTryTransfer6() throws InterruptedException {
977		final LinkedTransferQueue q = new LinkedTransferQueue();
978
979		Thread t = newStartedThread(new CheckedRunnable() {
980	<	void realRun() throws InterruptedException {
981	<	threadAssertFalse
982	<	(q.tryTransfer(new Object(),
983	<	SHORT_DELAY_MS, MILLISECONDS));
980	>	public void realRun() throws InterruptedException {
981	>	long startTime = System.nanoTime();
982	>	assertFalse(q.tryTransfer(new Object(),
983	>	timeoutMillis(), MILLISECONDS));
984	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
985	>	checkEmpty(q);
986		}});
987
988	<	Thread.sleep(SMALL_DELAY_MS);
988	>	awaitTermination(t);
989		checkEmpty(q);
1076	–	t.join();
990		}
991
992		/**
#	Line 1085 | Line 998 | public class LinkedTransferQueueTest ext
998		assertTrue(q.offer(four));
999
1000		Thread t = newStartedThread(new CheckedRunnable() {
1001	<	void realRun() throws InterruptedException {
1002	<	threadAssertTrue(q.tryTransfer(five,
1003	<	MEDIUM_DELAY_MS, MILLISECONDS));
1004	<	threadAssertTrue(q.isEmpty());
1001	>	public void realRun() throws InterruptedException {
1002	>	long startTime = System.nanoTime();
1003	>	assertTrue(q.tryTransfer(five, LONG_DELAY_MS, MILLISECONDS));
1004	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1005	>	checkEmpty(q);
1006		}});
1007
1008	<	Thread.sleep(SHORT_DELAY_MS);
1008	>	while (q.size() != 2)
1009	>	Thread.yield();
1010		assertEquals(2, q.size());
1011	<	assertEquals(four, q.poll());
1012	<	assertEquals(five, q.poll());
1011	>	assertSame(four, q.poll());
1012	>	assertSame(five, q.poll());
1013		checkEmpty(q);
1014	<	t.join();
1014	>	awaitTermination(t);
1015		}
1016
1017		/**
1018	<	* tryTransfer attempts to enqueue into the q and fails returning
1019	<	* false not enqueueing and the successive poll is null
1018	>	* tryTransfer attempts to enqueue into the queue and fails
1019	>	* returning false not enqueueing and the successive poll is null
1020		*/
1021		public void testTryTransfer8() throws InterruptedException {
1022		final LinkedTransferQueue q = new LinkedTransferQueue();
1023		assertTrue(q.offer(four));
1024		assertEquals(1, q.size());
1025	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1025	>	long startTime = System.nanoTime();
1026	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
1027	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
1028		assertEquals(1, q.size());
1029	<	assertEquals(four, q.poll());
1029	>	assertSame(four, q.poll());
1030		assertNull(q.poll());
1031		checkEmpty(q);
1032		}
1033
1034		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1035	<	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1036	<	assertTrue(q.isEmpty());
1035	>	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
1036	>	checkEmpty(q);
1037		for (int i = 0; i < n; i++) {
1038		assertEquals(i, q.size());
1039		assertTrue(q.offer(i));
#	Line 1125 | Line 1042 | public class LinkedTransferQueueTest ext
1042		assertFalse(q.isEmpty());
1043		return q;
1044		}
1045	+
1046	+	/**
1047	+	* remove(null), contains(null) always return false
1048	+	*/
1049	+	public void testNeverContainsNull() {
1050	+	Collection<?>[] qs = {
1051	+	new LinkedTransferQueue<Object>(),
1052	+	populatedQueue(2),
1053	+	};
1054	+
1055	+	for (Collection<?> q : qs) {
1056	+	assertFalse(q.contains(null));
1057	+	assertFalse(q.remove(null));
1058	+	}
1059	+	}
1060		}

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