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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.21 by jsr166, Thu Nov 26 15:42:15 2009 UTC vs.
Revision 1.67 by jsr166, Sun Oct 16 20:16:36 2016 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include John Vint
6		*/
7
8	<	import java.io.BufferedInputStream;
9	<	import java.io.BufferedOutputStream;
10	<	import java.io.ByteArrayInputStream;
11	<	import java.io.ByteArrayOutputStream;
12	<	import java.io.ObjectInputStream;
13	<	import java.io.ObjectOutputStream;
8	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
9	>
10		import java.util.ArrayList;
11		import java.util.Arrays;
12	+	import java.util.Collection;
13		import java.util.Iterator;
14		import java.util.List;
15		import java.util.NoSuchElementException;
16	<	import java.util.concurrent.*;
17	<	import static java.util.concurrent.TimeUnit.MILLISECONDS;
16	>	import java.util.Queue;
17	>	import java.util.concurrent.BlockingQueue;
18	>	import java.util.concurrent.CountDownLatch;
19	>	import java.util.concurrent.Executors;
20	>	import java.util.concurrent.ExecutorService;
21	>	import java.util.concurrent.LinkedTransferQueue;
22	>
23		import junit.framework.Test;
22	–	import junit.framework.TestSuite;
24
25		@SuppressWarnings({"unchecked", "rawtypes"})
26		public class LinkedTransferQueueTest extends JSR166TestCase {
27	+	public static class Generic extends BlockingQueueTest {
28	+	protected BlockingQueue emptyCollection() {
29	+	return new LinkedTransferQueue();
30	+	}
31	+	}
32
33		public static void main(String[] args) {
34	<	junit.textui.TestRunner.run(suite());
34	>	main(suite(), args);
35		}
36
37		public static Test suite() {
38	<	return new TestSuite(LinkedTransferQueueTest.class);
39	<	}
40	<
41	<	void checkEmpty(LinkedTransferQueue q) throws InterruptedException {
42	<	assertTrue(q.isEmpty());
43	<	assertEquals(0, q.size());
44	<	assertNull(q.peek());
45	<	assertNull(q.poll());
46	<	assertNull(q.poll(0, MILLISECONDS));
47	<	assertEquals(q.toString(), "[]");
42	<	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
43	<	assertFalse(q.iterator().hasNext());
44	<	try {
45	<	q.element();
46	<	shouldThrow();
47	<	} catch (NoSuchElementException success) {}
48	<	try {
49	<	q.iterator().next();
50	<	shouldThrow();
51	<	} catch (NoSuchElementException success) {}
52	<	try {
53	<	q.remove();
54	<	shouldThrow();
55	<	} catch (NoSuchElementException success) {}
38	>	class Implementation implements CollectionImplementation {
39	>	public Class<?> klazz() { return LinkedTransferQueue.class; }
40	>	public Collection emptyCollection() { return new LinkedTransferQueue(); }
41	>	public Object makeElement(int i) { return i; }
42	>	public boolean isConcurrent() { return true; }
43	>	public boolean permitsNulls() { return false; }
44	>	}
45	>	return newTestSuite(LinkedTransferQueueTest.class,
46	>	new Generic().testSuite(),
47	>	CollectionTest.testSuite(new Implementation()));
48		}
49
50		/**
#	Line 80 | Line 72 | public class LinkedTransferQueueTest ext
72		* NullPointerException
73		*/
74		public void testConstructor3() {
75	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
76		try {
77	<	Integer[] ints = new Integer[SIZE];
85	<	new LinkedTransferQueue(Arrays.asList(ints));
77	>	new LinkedTransferQueue(elements);
78		shouldThrow();
79		} catch (NullPointerException success) {}
80		}
#	Line 92 | Line 84 | public class LinkedTransferQueueTest ext
84		* throws NullPointerException
85		*/
86		public void testConstructor4() {
87	+	Integer[] ints = new Integer[SIZE];
88	+	for (int i = 0; i < SIZE - 1; ++i)
89	+	ints[i] = i;
90	+	Collection<Integer> elements = Arrays.asList(ints);
91		try {
92	<	Integer[] ints = new Integer[SIZE];
97	<	for (int i = 0; i < SIZE - 1; ++i) {
98	<	ints[i] = i;
99	<	}
100	<	new LinkedTransferQueue(Arrays.asList(ints));
92	>	new LinkedTransferQueue(elements);
93		shouldThrow();
94		} catch (NullPointerException success) {}
95		}
#	Line 130 | Line 122 | public class LinkedTransferQueueTest ext
122		* remainingCapacity() always returns Integer.MAX_VALUE
123		*/
124		public void testRemainingCapacity() {
125	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
125	>	BlockingQueue q = populatedQueue(SIZE);
126		for (int i = 0; i < SIZE; ++i) {
127		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
128		assertEquals(SIZE - i, q.size());
129	<	q.remove();
129	>	assertEquals(i, q.remove());
130		}
131		for (int i = 0; i < SIZE; ++i) {
132		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
133		assertEquals(i, q.size());
134	<	q.add(i);
134	>	assertTrue(q.add(i));
135		}
136		}
137
138		/**
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	–	/**
139		* addAll(this) throws IllegalArgumentException
140		*/
141		public void testAddAllSelf() {
142	+	LinkedTransferQueue q = populatedQueue(SIZE);
143		try {
184	–	LinkedTransferQueue q = populatedQueue(SIZE);
144		q.addAll(q);
145		shouldThrow();
146		} catch (IllegalArgumentException success) {}
147		}
148
149		/**
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	–	/**
150		* addAll of a collection with any null elements throws
151		* NullPointerException after possibly adding some elements
152		*/
153		public void testAddAll3() {
154	+	LinkedTransferQueue q = new LinkedTransferQueue();
155	+	Integer[] ints = new Integer[SIZE];
156	+	for (int i = 0; i < SIZE - 1; ++i)
157	+	ints[i] = i;
158		try {
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	–	}
159		q.addAll(Arrays.asList(ints));
160		shouldThrow();
161		} catch (NullPointerException success) {}
#	Line 233 | Line 179 | public class LinkedTransferQueueTest ext
179		}
180
181		/**
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	–	/**
182		* all elements successfully put are contained
183		*/
184		public void testPut() {
185		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
186		for (int i = 0; i < SIZE; ++i) {
187	<	assertEquals(q.size(), i);
187	>	assertEquals(i, q.size());
188		q.put(i);
189		assertTrue(q.contains(i));
190		}
#	Line 266 | Line 201 | public class LinkedTransferQueueTest ext
201		}
202
203		/**
204	<	* 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	<	public 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
204	>	* take removes existing elements until empty, then blocks interruptibly
205		*/
206		public void testBlockingTake() throws InterruptedException {
207	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
208	<	Thread t = new Thread(new CheckedRunnable() {
207	>	final BlockingQueue q = populatedQueue(SIZE);
208	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
209	>	Thread t = newStartedThread(new CheckedRunnable() {
210		public void realRun() throws InterruptedException {
211		for (int i = 0; i < SIZE; ++i) {
212	<	assertEquals(i, (int) q.take());
212	>	assertEquals(i, q.take());
213		}
214	+
215	+	Thread.currentThread().interrupt();
216		try {
217		q.take();
218		shouldThrow();
219		} catch (InterruptedException success) {}
220	+	assertFalse(Thread.interrupted());
221	+
222	+	pleaseInterrupt.countDown();
223	+	try {
224	+	q.take();
225	+	shouldThrow();
226	+	} catch (InterruptedException success) {}
227	+	assertFalse(Thread.interrupted());
228		}});
229
230	<	t.start();
231	<	Thread.sleep(SHORT_DELAY_MS);
230	>	await(pleaseInterrupt);
231	>	assertThreadStaysAlive(t);
232		t.interrupt();
233	<	t.join();
302	<	checkEmpty(q);
233	>	awaitTermination(t);
234		}
235
236		/**
#	Line 315 | Line 246 | public class LinkedTransferQueueTest ext
246		}
247
248		/**
249	<	* timed pool with zero timeout succeeds when non-empty, else times out
249	>	* timed poll with zero timeout succeeds when non-empty, else times out
250		*/
251		public void testTimedPoll0() throws InterruptedException {
252		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
#	Line 327 | Line 258 | public class LinkedTransferQueueTest ext
258		}
259
260		/**
261	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
261	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
262		*/
263		public void testTimedPoll() throws InterruptedException {
264		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
265	<	for (int i = 0; i < SIZE; ++i) {
266	<	long t0 = System.nanoTime();
265	>	long startTime = System.nanoTime();
266	>	for (int i = 0; i < SIZE; ++i)
267		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
268	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
269	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
270	<	}
271	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
268	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
269	>
270	>	startTime = System.nanoTime();
271	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
272	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
273		checkEmpty(q);
274		}
275
#	Line 346 | Line 278 | public class LinkedTransferQueueTest ext
278		* returning timeout status
279		*/
280		public void testInterruptedTimedPoll() throws InterruptedException {
281	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
281	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
282	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
283		Thread t = newStartedThread(new CheckedRunnable() {
284		public void realRun() throws InterruptedException {
285	<	for (int i = 0; i < SIZE; ++i) {
286	<	long t0 = System.nanoTime();
287	<	threadAssertEquals(i, (int) q.poll(LONG_DELAY_MS,
288	<	MILLISECONDS));
356	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
357	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
358	<	}
285	>	long startTime = System.nanoTime();
286	>	for (int i = 0; i < SIZE; ++i)
287	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
288	>	aboutToWait.countDown();
289		try {
290		q.poll(LONG_DELAY_MS, MILLISECONDS);
291		shouldThrow();
292		} catch (InterruptedException success) {}
293	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
294		}});
295
296	<	Thread.sleep(SMALL_DELAY_MS);
296	>	aboutToWait.await();
297	>	waitForThreadToEnterWaitState(t);
298		t.interrupt();
299	<	t.join();
299	>	awaitTermination(t);
300		checkEmpty(q);
301		}
302
303		/**
304	<	* timed poll before a delayed offer fails; after offer succeeds;
305	<	* on interruption throws
304	>	* timed poll after thread interrupted throws InterruptedException
305	>	* instead of returning timeout status
306		*/
307	<	public void testTimedPollWithOffer() throws InterruptedException {
308	<	final LinkedTransferQueue q = new LinkedTransferQueue();
309	<	Thread t = new Thread(new CheckedRunnable() {
307	>	public void testTimedPollAfterInterrupt() throws InterruptedException {
308	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
309	>	Thread t = newStartedThread(new CheckedRunnable() {
310		public void realRun() throws InterruptedException {
311	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
312	<	assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS));
311	>	long startTime = System.nanoTime();
312	>	Thread.currentThread().interrupt();
313	>	for (int i = 0; i < SIZE; ++i)
314	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
315		try {
316		q.poll(LONG_DELAY_MS, MILLISECONDS);
317		shouldThrow();
318		} catch (InterruptedException success) {}
319	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
320		}});
321
322	<	t.start();
323	<	Thread.sleep(SMALL_DELAY_MS);
389	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
390	<	t.interrupt();
391	<	t.join();
322	>	awaitTermination(t);
323	>	checkEmpty(q);
324		}
325
326		/**
#	Line 438 | Line 370 | public class LinkedTransferQueueTest ext
370		}
371
372		/**
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	–	/**
373		* An add following remove(x) succeeds
374		*/
375		public void testRemoveElementAndAdd() throws InterruptedException {
#	Line 462 | Line 379 | public class LinkedTransferQueueTest ext
379		assertTrue(q.remove(one));
380		assertTrue(q.remove(two));
381		assertTrue(q.add(three));
382	<	assertTrue(q.take() == three);
382	>	assertSame(q.take(), three);
383		}
384
385		/**
#	Line 544 | Line 461 | public class LinkedTransferQueueTest ext
461		}
462
463		/**
464	<	* toArray() contains all elements
464	>	* toArray() contains all elements in FIFO order
465		*/
466	<	public void testToArray() throws InterruptedException {
466	>	public void testToArray() {
467		LinkedTransferQueue q = populatedQueue(SIZE);
468		Object[] o = q.toArray();
469		for (int i = 0; i < o.length; i++) {
470	<	assertEquals(o[i], q.take());
470	>	assertSame(o[i], q.poll());
471		}
472		}
473
474		/**
475	<	* toArray(a) contains all elements
475	>	* toArray(a) contains all elements in FIFO order
476		*/
477	<	public void testToArray2() throws InterruptedException {
477	>	public void testToArray2() {
478		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
479		Integer[] ints = new Integer[SIZE];
480	<	ints = q.toArray(ints);
480	>	Integer[] array = q.toArray(ints);
481	>	assertSame(ints, array);
482		for (int i = 0; i < ints.length; i++) {
483	<	assertEquals(ints[i], q.take());
483	>	assertSame(ints[i], q.poll());
484		}
485		}
486
487		/**
488	<	* 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
488	>	* toArray(incompatible array type) throws ArrayStoreException
489		*/
490		public void testToArray1_BadArg() {
491		LinkedTransferQueue q = populatedQueue(SIZE);
492		try {
493	<	Object o[] = q.toArray(new String[10]);
493	>	q.toArray(new String[10]);
494		shouldThrow();
495		} catch (ArrayStoreException success) {}
496		}
#	Line 594 | Line 501 | public class LinkedTransferQueueTest ext
501		public void testIterator() throws InterruptedException {
502		LinkedTransferQueue q = populatedQueue(SIZE);
503		Iterator it = q.iterator();
504	<	int i = 0;
505	<	while (it.hasNext()) {
506	<	assertEquals(it.next(), i++);
507	<	}
504	>	int i;
505	>	for (i = 0; it.hasNext(); i++)
506	>	assertTrue(q.contains(it.next()));
507	>	assertEquals(i, SIZE);
508	>	assertIteratorExhausted(it);
509	>
510	>	it = q.iterator();
511	>	for (i = 0; it.hasNext(); i++)
512	>	assertEquals(it.next(), q.take());
513		assertEquals(i, SIZE);
514	+	assertIteratorExhausted(it);
515	+	}
516	+
517	+	/**
518	+	* iterator of empty collection has no elements
519	+	*/
520	+	public void testEmptyIterator() {
521	+	assertIteratorExhausted(new LinkedTransferQueue().iterator());
522		}
523
524		/**
#	Line 615 | Line 535 | public class LinkedTransferQueueTest ext
535		it.remove();
536
537		it = q.iterator();
538	<	assertEquals(it.next(), one);
539	<	assertEquals(it.next(), three);
538	>	assertSame(it.next(), one);
539	>	assertSame(it.next(), three);
540		assertFalse(it.hasNext());
541		}
542
#	Line 660 | Line 580 | public class LinkedTransferQueueTest ext
580		LinkedTransferQueue q = populatedQueue(SIZE);
581		String s = q.toString();
582		for (int i = 0; i < SIZE; ++i) {
583	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
583	>	assertTrue(s.contains(String.valueOf(i)));
584		}
585		}
586
#	Line 669 | Line 589 | public class LinkedTransferQueueTest ext
589		*/
590		public void testOfferInExecutor() {
591		final LinkedTransferQueue q = new LinkedTransferQueue();
592	<	q.add(one);
593	<	q.add(two);
594	<	ExecutorService executor = Executors.newFixedThreadPool(2);
592	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
593	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
594	>	try (PoolCleaner cleaner = cleaner(executor)) {
595
596	<	executor.execute(new CheckedRunnable() {
597	<	public void realRun() {
598	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS,
599	<	MILLISECONDS));
600	<	}});
601	<
602	<	executor.execute(new CheckedRunnable() {
683	<	public void realRun() throws InterruptedException {
684	<	Thread.sleep(SMALL_DELAY_MS);
685	<	threadAssertEquals(one, q.take());
686	<	}});
596	>	executor.execute(new CheckedRunnable() {
597	>	public void realRun() throws InterruptedException {
598	>	threadsStarted.await();
599	>	long startTime = System.nanoTime();
600	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
601	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
602	>	}});
603
604	<	joinPool(executor);
604	>	executor.execute(new CheckedRunnable() {
605	>	public void realRun() throws InterruptedException {
606	>	threadsStarted.await();
607	>	assertSame(one, q.take());
608	>	checkEmpty(q);
609	>	}});
610	>	}
611		}
612
613		/**
#	Line 693 | Line 615 | public class LinkedTransferQueueTest ext
615		*/
616		public void testPollInExecutor() {
617		final LinkedTransferQueue q = new LinkedTransferQueue();
618	<	ExecutorService executor = Executors.newFixedThreadPool(2);
618	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
619	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
620	>	try (PoolCleaner cleaner = cleaner(executor)) {
621
622	<	executor.execute(new CheckedRunnable() {
623	<	public void realRun() throws InterruptedException {
624	<	threadAssertNull(q.poll());
625	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS,
626	<	MILLISECONDS));
627	<	threadAssertTrue(q.isEmpty());
628	<	}});
629	<
630	<	executor.execute(new CheckedRunnable() {
707	<	public void realRun() throws InterruptedException {
708	<	Thread.sleep(SMALL_DELAY_MS);
709	<	q.put(one);
710	<	}});
622	>	executor.execute(new CheckedRunnable() {
623	>	public void realRun() throws InterruptedException {
624	>	assertNull(q.poll());
625	>	threadsStarted.await();
626	>	long startTime = System.nanoTime();
627	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
628	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
629	>	checkEmpty(q);
630	>	}});
631
632	<	joinPool(executor);
632	>	executor.execute(new CheckedRunnable() {
633	>	public void realRun() throws InterruptedException {
634	>	threadsStarted.await();
635	>	q.put(one);
636	>	}});
637	>	}
638		}
639
640		/**
641		* A deserialized serialized queue has same elements in same order
642		*/
643		public void testSerialization() throws Exception {
644	<	LinkedTransferQueue q = populatedQueue(SIZE);
645	<
721	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
722	<	ObjectOutputStream out
723	<	= new ObjectOutputStream(new BufferedOutputStream(bout));
724	<	out.writeObject(q);
725	<	out.close();
644	>	Queue x = populatedQueue(SIZE);
645	>	Queue y = serialClone(x);
646
647	<	ByteArrayInputStream bin
648	<	= new ByteArrayInputStream(bout.toByteArray());
649	<	ObjectInputStream in
650	<	= new ObjectInputStream(new BufferedInputStream(bin));
651	<	LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
652	<
653	<	assertEquals(q.size(), r.size());
734	<	while (!q.isEmpty()) {
735	<	assertEquals(q.remove(), r.remove());
647	>	assertNotSame(y, x);
648	>	assertEquals(x.size(), y.size());
649	>	assertEquals(x.toString(), y.toString());
650	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
651	>	while (!x.isEmpty()) {
652	>	assertFalse(y.isEmpty());
653	>	assertEquals(x.remove(), y.remove());
654		}
655	<	}
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) {}
655	>	assertTrue(y.isEmpty());
656		}
657
658		/**
#	Line 765 | Line 662 | public class LinkedTransferQueueTest ext
662		LinkedTransferQueue q = populatedQueue(SIZE);
663		ArrayList l = new ArrayList();
664		q.drainTo(l);
665	<	assertEquals(q.size(), 0);
666	<	assertEquals(l.size(), SIZE);
665	>	assertEquals(0, q.size());
666	>	assertEquals(SIZE, l.size());
667		for (int i = 0; i < SIZE; ++i) {
668	<	assertEquals(l.get(i), i);
668	>	assertEquals(i, l.get(i));
669		}
670		q.add(zero);
671		q.add(one);
#	Line 777 | Line 674 | public class LinkedTransferQueueTest ext
674		assertTrue(q.contains(one));
675		l.clear();
676		q.drainTo(l);
677	<	assertEquals(q.size(), 0);
678	<	assertEquals(l.size(), 2);
677	>	assertEquals(0, q.size());
678	>	assertEquals(2, l.size());
679		for (int i = 0; i < 2; ++i) {
680	<	assertEquals(l.get(i), i);
680	>	assertEquals(i, l.get(i));
681		}
682		}
683
#	Line 796 | Line 693 | public class LinkedTransferQueueTest ext
693		ArrayList l = new ArrayList();
694		q.drainTo(l);
695		assertTrue(l.size() >= SIZE);
696	<	for (int i = 0; i < SIZE; ++i) {
697	<	assertEquals(l.get(i), i);
698	<	}
802	<	t.join();
696	>	for (int i = 0; i < SIZE; ++i)
697	>	assertEquals(i, l.get(i));
698	>	awaitTermination(t);
699		assertTrue(q.size() + l.size() >= SIZE);
700		}
701
702		/**
703	<	* 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
703	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
704		*/
705		public void testDrainToN() {
706		LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 837 | Line 711 | public class LinkedTransferQueueTest ext
711		ArrayList l = new ArrayList();
712		q.drainTo(l, i);
713		int k = (i < SIZE) ? i : SIZE;
714	<	assertEquals(l.size(), k);
715	<	assertEquals(q.size(), SIZE - k);
716	<	for (int j = 0; j < k; ++j) {
717	<	assertEquals(l.get(j), j);
718	<	}
845	<	while (q.poll() != null)
846	<	;
714	>	assertEquals(k, l.size());
715	>	assertEquals(SIZE - k, q.size());
716	>	for (int j = 0; j < k; ++j)
717	>	assertEquals(j, l.get(j));
718	>	do {} while (q.poll() != null);
719		}
720		}
721
#	Line 853 | Line 725 | public class LinkedTransferQueueTest ext
725		*/
726		public void testWaitingConsumer() throws InterruptedException {
727		final LinkedTransferQueue q = new LinkedTransferQueue();
728	<	assertEquals(q.getWaitingConsumerCount(), 0);
728	>	assertEquals(0, q.getWaitingConsumerCount());
729		assertFalse(q.hasWaitingConsumer());
730	+	final CountDownLatch threadStarted = new CountDownLatch(1);
731
732		Thread t = newStartedThread(new CheckedRunnable() {
733		public void realRun() throws InterruptedException {
734	<	Thread.sleep(SMALL_DELAY_MS);
735	<	threadAssertTrue(q.hasWaitingConsumer());
736	<	threadAssertEquals(q.getWaitingConsumerCount(), 1);
737	<	threadAssertTrue(q.offer(new Object()));
738	<	threadAssertFalse(q.hasWaitingConsumer());
739	<	threadAssertEquals(q.getWaitingConsumerCount(), 0);
734	>	threadStarted.countDown();
735	>	long startTime = System.nanoTime();
736	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
737	>	assertEquals(0, q.getWaitingConsumerCount());
738	>	assertFalse(q.hasWaitingConsumer());
739	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
740		}});
741
742	<	assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) != null);
743	<	assertEquals(q.getWaitingConsumerCount(), 0);
742	>	threadStarted.await();
743	>	waitForThreadToEnterWaitState(t);
744	>	assertEquals(1, q.getWaitingConsumerCount());
745	>	assertTrue(q.hasWaitingConsumer());
746	>
747	>	assertTrue(q.offer(one));
748	>	assertEquals(0, q.getWaitingConsumerCount());
749		assertFalse(q.hasWaitingConsumer());
750	<	t.join();
750	>
751	>	awaitTermination(t);
752		}
753
754		/**
#	Line 890 | Line 769 | public class LinkedTransferQueueTest ext
769		public void testTransfer2() throws InterruptedException {
770		final LinkedTransferQueue<Integer> q
771		= new LinkedTransferQueue<Integer>();
772	+	final CountDownLatch threadStarted = new CountDownLatch(1);
773
774		Thread t = newStartedThread(new CheckedRunnable() {
775		public void realRun() throws InterruptedException {
776	<	q.transfer(SIZE);
777	<	threadAssertTrue(q.isEmpty());
776	>	threadStarted.countDown();
777	>	q.transfer(five);
778	>	checkEmpty(q);
779		}});
780
781	<	Thread.sleep(SHORT_DELAY_MS);
781	>	threadStarted.await();
782	>	waitForThreadToEnterWaitState(t);
783		assertEquals(1, q.size());
784	<	assertEquals(SIZE, (int) q.poll());
785	<	assertTrue(q.isEmpty());
786	<	t.join();
784	>	assertSame(five, q.poll());
785	>	checkEmpty(q);
786	>	awaitTermination(t);
787		}
788
789		/**
#	Line 913 | Line 795 | public class LinkedTransferQueueTest ext
795
796		Thread first = newStartedThread(new CheckedRunnable() {
797		public void realRun() throws InterruptedException {
798	<	Integer i = SIZE + 1;
799	<	q.transfer(i);
800	<	threadAssertTrue(!q.contains(i));
919	<	threadAssertEquals(1, q.size());
798	>	q.transfer(four);
799	>	assertTrue(!q.contains(four));
800	>	assertEquals(1, q.size());
801		}});
802
803		Thread interruptedThread = newStartedThread(
804		new CheckedInterruptedRunnable() {
805		public void realRun() throws InterruptedException {
806	<	while (q.size() == 0)
806	>	while (q.isEmpty())
807		Thread.yield();
808	<	q.transfer(SIZE);
808	>	q.transfer(five);
809		}});
810
811		while (q.size() < 2)
812		Thread.yield();
813		assertEquals(2, q.size());
814	<	assertEquals(SIZE + 1, (int) q.poll());
814	>	assertSame(four, q.poll());
815		first.join();
816		assertEquals(1, q.size());
817		interruptedThread.interrupt();
818		interruptedThread.join();
819	<	assertEquals(0, q.size());
939	<	assertTrue(q.isEmpty());
819	>	checkEmpty(q);
820		}
821
822		/**
#	Line 949 | Line 829 | public class LinkedTransferQueueTest ext
829		Thread t = newStartedThread(new CheckedRunnable() {
830		public void realRun() throws InterruptedException {
831		q.transfer(four);
832	<	threadAssertFalse(q.contains(four));
833	<	threadAssertEquals(three, q.poll());
832	>	assertFalse(q.contains(four));
833	>	assertSame(three, q.poll());
834		}});
835
836	<	Thread.sleep(SHORT_DELAY_MS);
836	>	while (q.isEmpty())
837	>	Thread.yield();
838	>	assertFalse(q.isEmpty());
839	>	assertEquals(1, q.size());
840		assertTrue(q.offer(three));
841	<	assertEquals(four, q.poll());
842	<	t.join();
841	>	assertSame(four, q.poll());
842	>	awaitTermination(t);
843		}
844
845		/**
#	Line 969 | Line 852 | public class LinkedTransferQueueTest ext
852
853		Thread t = newStartedThread(new CheckedRunnable() {
854		public void realRun() throws InterruptedException {
855	<	q.transfer(SIZE);
855	>	q.transfer(four);
856		checkEmpty(q);
857		}});
858
859	<	Thread.sleep(SHORT_DELAY_MS);
860	<	assertEquals(SIZE, (int) q.take());
859	>	while (q.isEmpty())
860	>	Thread.yield();
861	>	assertFalse(q.isEmpty());
862	>	assertEquals(1, q.size());
863	>	assertSame(four, q.take());
864		checkEmpty(q);
865	<	t.join();
865	>	awaitTermination(t);
866		}
867
868		/**
869		* tryTransfer(null) throws NullPointerException
870		*/
871		public void testTryTransfer1() {
872	+	final LinkedTransferQueue q = new LinkedTransferQueue();
873		try {
987	–	final LinkedTransferQueue q = new LinkedTransferQueue();
874		q.tryTransfer(null);
875		shouldThrow();
876		} catch (NullPointerException success) {}
#	Line 1013 | Line 899 | public class LinkedTransferQueueTest ext
899		public void realRun() {
900		while (! q.hasWaitingConsumer())
901		Thread.yield();
902	<	threadAssertTrue(q.hasWaitingConsumer());
903	<	threadAssertTrue(q.isEmpty());
904	<	threadAssertTrue(q.size() == 0);
1019	<	threadAssertTrue(q.tryTransfer(hotPotato));
902	>	assertTrue(q.hasWaitingConsumer());
903	>	checkEmpty(q);
904	>	assertTrue(q.tryTransfer(hotPotato));
905		}});
906
907	<	assertTrue(q.poll(MEDIUM_DELAY_MS, MILLISECONDS) == hotPotato);
907	>	long startTime = System.nanoTime();
908	>	assertSame(hotPotato, q.poll(LONG_DELAY_MS, MILLISECONDS));
909	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
910		checkEmpty(q);
911	<	t.join();
911	>	awaitTermination(t);
912		}
913
914		/**
#	Line 1036 | Line 923 | public class LinkedTransferQueueTest ext
923		public void realRun() {
924		while (! q.hasWaitingConsumer())
925		Thread.yield();
926	<	threadAssertTrue(q.hasWaitingConsumer());
927	<	threadAssertTrue(q.isEmpty());
928	<	threadAssertTrue(q.size() == 0);
1042	<	threadAssertTrue(q.tryTransfer(hotPotato));
926	>	assertTrue(q.hasWaitingConsumer());
927	>	checkEmpty(q);
928	>	assertTrue(q.tryTransfer(hotPotato));
929		}});
930
931	<	assertTrue(q.take() == hotPotato);
931	>	assertSame(q.take(), hotPotato);
932		checkEmpty(q);
933	<	t.join();
933	>	awaitTermination(t);
934		}
935
936		/**
937	<	* tryTransfer waits the amount given if interrupted, and
1052	<	* throws interrupted exception
937	>	* tryTransfer blocks interruptibly if no takers
938		*/
939		public void testTryTransfer5() throws InterruptedException {
940		final LinkedTransferQueue q = new LinkedTransferQueue();
941	+	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
942	+	assertTrue(q.isEmpty());
943
944	<	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
944	>	Thread t = newStartedThread(new CheckedRunnable() {
945		public void realRun() throws InterruptedException {
946	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
946	>	long startTime = System.nanoTime();
947	>	Thread.currentThread().interrupt();
948	>	try {
949	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
950	>	shouldThrow();
951	>	} catch (InterruptedException success) {}
952	>	assertFalse(Thread.interrupted());
953	>
954	>	pleaseInterrupt.countDown();
955	>	try {
956	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
957	>	shouldThrow();
958	>	} catch (InterruptedException success) {}
959	>	assertFalse(Thread.interrupted());
960	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
961		}});
962
963	<	Thread.sleep(SMALL_DELAY_MS);
964	<	toInterrupt.interrupt();
965	<	toInterrupt.join();
963	>	await(pleaseInterrupt);
964	>	assertThreadStaysAlive(t);
965	>	t.interrupt();
966	>	awaitTermination(t);
967	>	checkEmpty(q);
968		}
969
970		/**
971	<	* tryTransfer gives up after the timeout and return false
971	>	* tryTransfer gives up after the timeout and returns false
972		*/
973		public void testTryTransfer6() throws InterruptedException {
974		final LinkedTransferQueue q = new LinkedTransferQueue();
975
976		Thread t = newStartedThread(new CheckedRunnable() {
977		public void realRun() throws InterruptedException {
978	<	threadAssertFalse
979	<	(q.tryTransfer(new Object(),
980	<	SHORT_DELAY_MS, MILLISECONDS));
978	>	long startTime = System.nanoTime();
979	>	assertFalse(q.tryTransfer(new Object(),
980	>	timeoutMillis(), MILLISECONDS));
981	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
982	>	checkEmpty(q);
983		}});
984
985	<	Thread.sleep(SMALL_DELAY_MS);
985	>	awaitTermination(t);
986		checkEmpty(q);
1082	–	t.join();
987		}
988
989		/**
#	Line 1092 | Line 996 | public class LinkedTransferQueueTest ext
996
997		Thread t = newStartedThread(new CheckedRunnable() {
998		public void realRun() throws InterruptedException {
999	<	threadAssertTrue(q.tryTransfer(five,
1000	<	MEDIUM_DELAY_MS, MILLISECONDS));
1001	<	threadAssertTrue(q.isEmpty());
999	>	long startTime = System.nanoTime();
1000	>	assertTrue(q.tryTransfer(five, LONG_DELAY_MS, MILLISECONDS));
1001	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1002	>	checkEmpty(q);
1003		}});
1004
1005	<	Thread.sleep(SHORT_DELAY_MS);
1005	>	while (q.size() != 2)
1006	>	Thread.yield();
1007		assertEquals(2, q.size());
1008	<	assertEquals(four, q.poll());
1009	<	assertEquals(five, q.poll());
1008	>	assertSame(four, q.poll());
1009	>	assertSame(five, q.poll());
1010		checkEmpty(q);
1011	<	t.join();
1011	>	awaitTermination(t);
1012		}
1013
1014		/**
1015	<	* tryTransfer attempts to enqueue into the q and fails returning
1016	<	* false not enqueueing and the successive poll is null
1015	>	* tryTransfer attempts to enqueue into the queue and fails
1016	>	* returning false not enqueueing and the successive poll is null
1017		*/
1018		public void testTryTransfer8() throws InterruptedException {
1019		final LinkedTransferQueue q = new LinkedTransferQueue();
1020		assertTrue(q.offer(four));
1021		assertEquals(1, q.size());
1022	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1022	>	long startTime = System.nanoTime();
1023	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
1024	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
1025		assertEquals(1, q.size());
1026	<	assertEquals(four, q.poll());
1026	>	assertSame(four, q.poll());
1027		assertNull(q.poll());
1028		checkEmpty(q);
1029		}
1030
1031		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1032		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1033	<	assertTrue(q.isEmpty());
1033	>	checkEmpty(q);
1034		for (int i = 0; i < n; i++) {
1035		assertEquals(i, q.size());
1036		assertTrue(q.offer(i));
#	Line 1131 | Line 1039 | public class LinkedTransferQueueTest ext
1039		assertFalse(q.isEmpty());
1040		return q;
1041		}
1042	+
1043	+	/**
1044	+	* remove(null), contains(null) always return false
1045	+	*/
1046	+	public void testNeverContainsNull() {
1047	+	Collection<?>[] qs = {
1048	+	new LinkedTransferQueue<Object>(),
1049	+	populatedQueue(2),
1050	+	};
1051	+
1052	+	for (Collection<?> q : qs) {
1053	+	assertFalse(q.contains(null));
1054	+	assertFalse(q.remove(null));
1055	+	}
1056	+	}
1057		}

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