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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.23 by jsr166, Tue Dec 1 06:28:43 2009 UTC vs.
Revision 1.65 by jsr166, Tue Oct 6 00:36:55 2015 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	+	static class Implementation implements CollectionImplementation {
28	+	public Class<?> klazz() { return LinkedTransferQueue.class; }
29	+	public Collection emptyCollection() { return new LinkedTransferQueue(); }
30	+	public Object makeElement(int i) { return i; }
31	+	public boolean isConcurrent() { return true; }
32	+	public boolean permitsNulls() { return false; }
33	+	}
34
35	<	public static void main(String[] args) {
36	<	junit.textui.TestRunner.run(suite());
35	>	public static class Generic extends BlockingQueueTest {
36	>	protected BlockingQueue emptyCollection() {
37	>	return new LinkedTransferQueue();
38	>	}
39		}
40
41	<	public static Test suite() {
42	<	return new TestSuite(LinkedTransferQueueTest.class);
41	>	public static void main(String[] args) {
42	>	main(suite(), args);
43		}
44
45	<	void checkEmpty(LinkedTransferQueue q) throws InterruptedException {
46	<	assertTrue(q.isEmpty());
47	<	assertEquals(0, q.size());
48	<	assertNull(q.peek());
39	<	assertNull(q.poll());
40	<	assertNull(q.poll(0, MILLISECONDS));
41	<	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) {}
45	>	public static Test suite() {
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>();
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	<	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
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());
213	>	assertEquals(i, q.take());
214		}
215	+
216	+	Thread.currentThread().interrupt();
217	+	try {
218	+	q.take();
219	+	shouldThrow();
220	+	} catch (InterruptedException success) {}
221	+	assertFalse(Thread.interrupted());
222	+
223	+	pleaseInterrupt.countDown();
224		try {
225		q.take();
226		shouldThrow();
227		} catch (InterruptedException success) {}
228	+	assertFalse(Thread.interrupted());
229		}});
230
231	<	t.start();
232	<	Thread.sleep(SHORT_DELAY_MS);
231	>	await(pleaseInterrupt);
232	>	assertThreadStaysAlive(t);
233		t.interrupt();
234	<	t.join();
302	<	checkEmpty(q);
234	>	awaitTermination(t);
235		}
236
237		/**
#	Line 315 | Line 247 | public class LinkedTransferQueueTest ext
247		}
248
249		/**
250	<	* timed pool with zero timeout succeeds when non-empty, else times out
250	>	* timed poll with zero timeout succeeds when non-empty, else times out
251		*/
252		public void testTimedPoll0() throws InterruptedException {
253		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
#	Line 327 | Line 259 | public class LinkedTransferQueueTest ext
259		}
260
261		/**
262	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
262	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
263		*/
264		public void testTimedPoll() throws InterruptedException {
265		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
266		for (int i = 0; i < SIZE; ++i) {
267	<	long t0 = System.nanoTime();
267	>	long startTime = System.nanoTime();
268		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
269	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
338	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
269	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
270		}
271	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
271	>	long startTime = System.nanoTime();
272	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
273	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
274		checkEmpty(q);
275		}
276
#	Line 346 | Line 279 | public class LinkedTransferQueueTest ext
279		* returning timeout status
280		*/
281		public void testInterruptedTimedPoll() throws InterruptedException {
282	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
282	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
283	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
284		Thread t = newStartedThread(new CheckedRunnable() {
285		public void realRun() throws InterruptedException {
286	+	long startTime = System.nanoTime();
287		for (int i = 0; i < SIZE; ++i) {
353	–	long t0 = System.nanoTime();
288		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
355	–	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
356	–	assertTrue(millisElapsed < SMALL_DELAY_MS);
289		}
290	+	aboutToWait.countDown();
291		try {
292		q.poll(LONG_DELAY_MS, MILLISECONDS);
293		shouldThrow();
294	<	} catch (InterruptedException success) {}
294	>	} catch (InterruptedException success) {
295	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
296	>	}
297		}});
298
299	<	Thread.sleep(SMALL_DELAY_MS);
299	>	aboutToWait.await();
300	>	waitForThreadToEnterWaitState(t, LONG_DELAY_MS);
301		t.interrupt();
302	<	t.join();
302	>	awaitTermination(t);
303		checkEmpty(q);
304		}
305
306		/**
307	<	* timed poll before a delayed offer fails; after offer succeeds;
308	<	* on interruption throws
307	>	* timed poll after thread interrupted throws InterruptedException
308	>	* instead of returning timeout status
309		*/
310	<	public void testTimedPollWithOffer() throws InterruptedException {
311	<	final LinkedTransferQueue q = new LinkedTransferQueue();
312	<	Thread t = new Thread(new CheckedRunnable() {
310	>	public void testTimedPollAfterInterrupt() throws InterruptedException {
311	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
312	>	Thread t = newStartedThread(new CheckedRunnable() {
313		public void realRun() throws InterruptedException {
314	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
315	<	assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS));
314	>	Thread.currentThread().interrupt();
315	>	for (int i = 0; i < SIZE; ++i) {
316	>	long startTime = System.nanoTime();
317	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
318	>	assertTrue(millisElapsedSince(startTime) < SMALL_DELAY_MS);
319	>	}
320		try {
321	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
321	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
322		shouldThrow();
323		} catch (InterruptedException success) {}
324		}});
325
326	<	t.start();
327	<	Thread.sleep(SMALL_DELAY_MS);
388	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
389	<	t.interrupt();
390	<	t.join();
326	>	awaitTermination(t, MEDIUM_DELAY_MS);
327	>	checkEmpty(q);
328		}
329
330		/**
#	Line 437 | Line 374 | public class LinkedTransferQueueTest ext
374		}
375
376		/**
440	–	* remove(x) removes x and returns true if present
441	–	*/
442	–	public void testRemoveElement() throws InterruptedException {
443	–	LinkedTransferQueue q = populatedQueue(SIZE);
444	–	for (int i = 1; i < SIZE; i += 2) {
445	–	assertTrue(q.remove(i));
446	–	}
447	–	for (int i = 0; i < SIZE; i += 2) {
448	–	assertTrue(q.remove(i));
449	–	assertFalse(q.remove(i + 1));
450	–	}
451	–	checkEmpty(q);
452	–	}
453	–
454	–	/**
377		* An add following remove(x) succeeds
378		*/
379		public void testRemoveElementAndAdd() throws InterruptedException {
#	Line 543 | Line 465 | public class LinkedTransferQueueTest ext
465		}
466
467		/**
468	<	* toArray() contains all elements
468	>	* toArray() contains all elements in FIFO order
469		*/
470	<	public void testToArray() throws InterruptedException {
470	>	public void testToArray() {
471		LinkedTransferQueue q = populatedQueue(SIZE);
472		Object[] o = q.toArray();
473		for (int i = 0; i < o.length; i++) {
474	<	assertEquals(o[i], q.take());
474	>	assertSame(o[i], q.poll());
475		}
476		}
477
478		/**
479	<	* toArray(a) contains all elements
479	>	* toArray(a) contains all elements in FIFO order
480		*/
481	<	public void testToArray2() throws InterruptedException {
481	>	public void testToArray2() {
482		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
483		Integer[] ints = new Integer[SIZE];
484	<	ints = q.toArray(ints);
484	>	Integer[] array = q.toArray(ints);
485	>	assertSame(ints, array);
486		for (int i = 0; i < ints.length; i++) {
487	<	assertEquals(ints[i], q.take());
487	>	assertSame(ints[i], q.poll());
488		}
489		}
490
491		/**
492	<	* toArray(null) throws NullPointerException
570	<	*/
571	<	public void testToArray_BadArg() {
572	<	LinkedTransferQueue q = populatedQueue(SIZE);
573	<	try {
574	<	Object o[] = q.toArray(null);
575	<	shouldThrow();
576	<	} catch (NullPointerException success) {}
577	<	}
578	<
579	<	/**
580	<	* toArray(incompatible array type) throws CCE
492	>	* toArray(incompatible array type) throws ArrayStoreException
493		*/
494		public void testToArray1_BadArg() {
495		LinkedTransferQueue q = populatedQueue(SIZE);
496		try {
497	<	Object o[] = q.toArray(new String[10]);
497	>	q.toArray(new String[10]);
498		shouldThrow();
499		} catch (ArrayStoreException success) {}
500		}
#	Line 593 | Line 505 | public class LinkedTransferQueueTest ext
505		public void testIterator() throws InterruptedException {
506		LinkedTransferQueue q = populatedQueue(SIZE);
507		Iterator it = q.iterator();
508	<	int i = 0;
509	<	while (it.hasNext()) {
510	<	assertEquals(it.next(), i++);
511	<	}
508	>	int i;
509	>	for (i = 0; it.hasNext(); i++)
510	>	assertTrue(q.contains(it.next()));
511	>	assertEquals(i, SIZE);
512	>	assertIteratorExhausted(it);
513	>
514	>	it = q.iterator();
515	>	for (i = 0; it.hasNext(); i++)
516	>	assertEquals(it.next(), q.take());
517		assertEquals(i, SIZE);
518	+	assertIteratorExhausted(it);
519	+	}
520	+
521	+	/**
522	+	* iterator of empty collection has no elements
523	+	*/
524	+	public void testEmptyIterator() {
525	+	assertIteratorExhausted(new LinkedTransferQueue().iterator());
526		}
527
528		/**
#	Line 614 | Line 539 | public class LinkedTransferQueueTest ext
539		it.remove();
540
541		it = q.iterator();
542	<	assertEquals(it.next(), one);
543	<	assertEquals(it.next(), three);
542	>	assertSame(it.next(), one);
543	>	assertSame(it.next(), three);
544		assertFalse(it.hasNext());
545		}
546
#	Line 659 | Line 584 | public class LinkedTransferQueueTest ext
584		LinkedTransferQueue q = populatedQueue(SIZE);
585		String s = q.toString();
586		for (int i = 0; i < SIZE; ++i) {
587	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
587	>	assertTrue(s.contains(String.valueOf(i)));
588		}
589		}
590
#	Line 668 | Line 593 | public class LinkedTransferQueueTest ext
593		*/
594		public void testOfferInExecutor() {
595		final LinkedTransferQueue q = new LinkedTransferQueue();
596	<	q.add(one);
597	<	q.add(two);
598	<	ExecutorService executor = Executors.newFixedThreadPool(2);
674	<
675	<	executor.execute(new CheckedRunnable() {
676	<	public void realRun() {
677	<	assertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS));
678	<	}});
596	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
597	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
598	>	try (PoolCleaner cleaner = cleaner(executor)) {
599
600	<	executor.execute(new CheckedRunnable() {
601	<	public void realRun() throws InterruptedException {
602	<	Thread.sleep(SMALL_DELAY_MS);
603	<	assertEquals(one, q.take());
604	<	}});
600	>	executor.execute(new CheckedRunnable() {
601	>	public void realRun() throws InterruptedException {
602	>	threadsStarted.await();
603	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
604	>	}});
605
606	<	joinPool(executor);
606	>	executor.execute(new CheckedRunnable() {
607	>	public void realRun() throws InterruptedException {
608	>	threadsStarted.await();
609	>	assertSame(one, q.take());
610	>	checkEmpty(q);
611	>	}});
612	>	}
613		}
614
615		/**
#	Line 691 | Line 617 | public class LinkedTransferQueueTest ext
617		*/
618		public void testPollInExecutor() {
619		final LinkedTransferQueue q = new LinkedTransferQueue();
620	<	ExecutorService executor = Executors.newFixedThreadPool(2);
621	<
622	<	executor.execute(new CheckedRunnable() {
697	<	public void realRun() throws InterruptedException {
698	<	assertNull(q.poll());
699	<	assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
700	<	assertTrue(q.isEmpty());
701	<	}});
620	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
621	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
622	>	try (PoolCleaner cleaner = cleaner(executor)) {
623
624	<	executor.execute(new CheckedRunnable() {
625	<	public void realRun() throws InterruptedException {
626	<	Thread.sleep(SMALL_DELAY_MS);
627	<	q.put(one);
628	<	}});
624	>	executor.execute(new CheckedRunnable() {
625	>	public void realRun() throws InterruptedException {
626	>	assertNull(q.poll());
627	>	threadsStarted.await();
628	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
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	<
718	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
719	<	ObjectOutputStream out
720	<	= new ObjectOutputStream(new BufferedOutputStream(bout));
721	<	out.writeObject(q);
722	<	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());
731	<	while (!q.isEmpty()) {
732	<	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	<	}
735	<
736	<	/**
737	<	* drainTo(null) throws NullPointerException
738	<	*/
739	<	public void testDrainToNull() {
740	<	LinkedTransferQueue q = populatedQueue(SIZE);
741	<	try {
742	<	q.drainTo(null);
743	<	shouldThrow();
744	<	} catch (NullPointerException success) {}
745	<	}
746	<
747	<	/**
748	<	* drainTo(this) throws IllegalArgumentException
749	<	*/
750	<	public void testDrainToSelf() {
751	<	LinkedTransferQueue q = populatedQueue(SIZE);
752	<	try {
753	<	q.drainTo(q);
754	<	shouldThrow();
755	<	} catch (IllegalArgumentException success) {}
655	>	assertTrue(y.isEmpty());
656		}
657
658		/**
#	Line 762 | 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 774 | 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 793 | 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	<	}
799	<	t.join();
696	>	for (int i = 0; i < SIZE; ++i)
697	>	assertEquals(i, l.get(i));
698	>	awaitTermination(t, MEDIUM_DELAY_MS);
699		assertTrue(q.size() + l.size() >= SIZE);
700		}
701
702		/**
703	<	* drainTo(null, n) throws NullPointerException
805	<	*/
806	<	public void testDrainToNullN() {
807	<	LinkedTransferQueue q = populatedQueue(SIZE);
808	<	try {
809	<	q.drainTo(null, SIZE);
810	<	shouldThrow();
811	<	} catch (NullPointerException success) {}
812	<	}
813	<
814	<	/**
815	<	* drainTo(this, n) throws IllegalArgumentException
816	<	*/
817	<	public void testDrainToSelfN() {
818	<	LinkedTransferQueue q = populatedQueue(SIZE);
819	<	try {
820	<	q.drainTo(q, SIZE);
821	<	shouldThrow();
822	<	} catch (IllegalArgumentException success) {}
823	<	}
824	<
825	<	/**
826	<	* 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 834 | 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	<	}
842	<	while (q.poll() != null)
843	<	;
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 850 | 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	<	assertTrue(q.hasWaitingConsumer());
736	<	assertEquals(q.getWaitingConsumerCount(), 1);
861	<	assertTrue(q.offer(one));
734	>	threadStarted.countDown();
735	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
736	>	assertEquals(0, q.getWaitingConsumerCount());
737		assertFalse(q.hasWaitingConsumer());
863	–	assertEquals(q.getWaitingConsumerCount(), 0);
738		}});
739
740	<	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
741	<	assertEquals(q.getWaitingConsumerCount(), 0);
740	>	threadStarted.await();
741	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
742	>	assertEquals(1, q.getWaitingConsumerCount());
743	>	assertTrue(q.hasWaitingConsumer());
744	>
745	>	assertTrue(q.offer(one));
746	>	assertEquals(0, q.getWaitingConsumerCount());
747		assertFalse(q.hasWaitingConsumer());
748	<	t.join();
748	>
749	>	awaitTermination(t, MEDIUM_DELAY_MS);
750		}
751
752		/**
#	Line 887 | Line 767 | public class LinkedTransferQueueTest ext
767		public void testTransfer2() throws InterruptedException {
768		final LinkedTransferQueue<Integer> q
769		= new LinkedTransferQueue<Integer>();
770	+	final CountDownLatch threadStarted = new CountDownLatch(1);
771
772		Thread t = newStartedThread(new CheckedRunnable() {
773		public void realRun() throws InterruptedException {
774	<	q.transfer(SIZE);
775	<	threadAssertTrue(q.isEmpty());
774	>	threadStarted.countDown();
775	>	q.transfer(five);
776	>	checkEmpty(q);
777		}});
778
779	<	Thread.sleep(SHORT_DELAY_MS);
779	>	threadStarted.await();
780	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
781		assertEquals(1, q.size());
782	<	assertEquals(SIZE, (int) q.poll());
783	<	assertTrue(q.isEmpty());
784	<	t.join();
782	>	assertSame(five, q.poll());
783	>	checkEmpty(q);
784	>	awaitTermination(t, MEDIUM_DELAY_MS);
785		}
786
787		/**
#	Line 910 | Line 793 | public class LinkedTransferQueueTest ext
793
794		Thread first = newStartedThread(new CheckedRunnable() {
795		public void realRun() throws InterruptedException {
796	<	Integer i = SIZE + 1;
797	<	q.transfer(i);
798	<	threadAssertTrue(!q.contains(i));
916	<	threadAssertEquals(1, q.size());
796	>	q.transfer(four);
797	>	assertTrue(!q.contains(four));
798	>	assertEquals(1, q.size());
799		}});
800
801		Thread interruptedThread = newStartedThread(
802		new CheckedInterruptedRunnable() {
803		public void realRun() throws InterruptedException {
804	<	while (q.size() == 0)
804	>	while (q.isEmpty())
805		Thread.yield();
806	<	q.transfer(SIZE);
806	>	q.transfer(five);
807		}});
808
809		while (q.size() < 2)
810		Thread.yield();
811		assertEquals(2, q.size());
812	<	assertEquals(SIZE + 1, (int) q.poll());
812	>	assertSame(four, q.poll());
813		first.join();
814		assertEquals(1, q.size());
815		interruptedThread.interrupt();
816		interruptedThread.join();
817	<	assertEquals(0, q.size());
936	<	assertTrue(q.isEmpty());
817	>	checkEmpty(q);
818		}
819
820		/**
#	Line 946 | Line 827 | public class LinkedTransferQueueTest ext
827		Thread t = newStartedThread(new CheckedRunnable() {
828		public void realRun() throws InterruptedException {
829		q.transfer(four);
830	<	threadAssertFalse(q.contains(four));
831	<	threadAssertEquals(three, q.poll());
830	>	assertFalse(q.contains(four));
831	>	assertSame(three, q.poll());
832		}});
833
834	<	Thread.sleep(SHORT_DELAY_MS);
834	>	while (q.isEmpty())
835	>	Thread.yield();
836	>	assertFalse(q.isEmpty());
837	>	assertEquals(1, q.size());
838		assertTrue(q.offer(three));
839	<	assertEquals(four, q.poll());
840	<	t.join();
839	>	assertSame(four, q.poll());
840	>	awaitTermination(t, MEDIUM_DELAY_MS);
841		}
842
843		/**
#	Line 966 | Line 850 | public class LinkedTransferQueueTest ext
850
851		Thread t = newStartedThread(new CheckedRunnable() {
852		public void realRun() throws InterruptedException {
853	<	q.transfer(SIZE);
853	>	q.transfer(four);
854		checkEmpty(q);
855		}});
856
857	<	Thread.sleep(SHORT_DELAY_MS);
858	<	assertEquals(SIZE, (int) q.take());
857	>	while (q.isEmpty())
858	>	Thread.yield();
859	>	assertFalse(q.isEmpty());
860	>	assertEquals(1, q.size());
861	>	assertSame(four, q.take());
862		checkEmpty(q);
863	<	t.join();
863	>	awaitTermination(t, MEDIUM_DELAY_MS);
864		}
865
866		/**
867		* tryTransfer(null) throws NullPointerException
868		*/
869		public void testTryTransfer1() {
870	+	final LinkedTransferQueue q = new LinkedTransferQueue();
871		try {
984	–	final LinkedTransferQueue q = new LinkedTransferQueue();
872		q.tryTransfer(null);
873		shouldThrow();
874		} catch (NullPointerException success) {}
#	Line 1010 | Line 897 | public class LinkedTransferQueueTest ext
897		public void realRun() {
898		while (! q.hasWaitingConsumer())
899		Thread.yield();
900	<	threadAssertTrue(q.hasWaitingConsumer());
901	<	threadAssertTrue(q.isEmpty());
902	<	threadAssertTrue(q.size() == 0);
1016	<	threadAssertTrue(q.tryTransfer(hotPotato));
900	>	assertTrue(q.hasWaitingConsumer());
901	>	checkEmpty(q);
902	>	assertTrue(q.tryTransfer(hotPotato));
903		}});
904
905		assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
906		checkEmpty(q);
907	<	t.join();
907	>	awaitTermination(t, MEDIUM_DELAY_MS);
908		}
909
910		/**
#	Line 1033 | Line 919 | public class LinkedTransferQueueTest ext
919		public void realRun() {
920		while (! q.hasWaitingConsumer())
921		Thread.yield();
922	<	threadAssertTrue(q.hasWaitingConsumer());
923	<	threadAssertTrue(q.isEmpty());
924	<	threadAssertTrue(q.size() == 0);
1039	<	threadAssertTrue(q.tryTransfer(hotPotato));
922	>	assertTrue(q.hasWaitingConsumer());
923	>	checkEmpty(q);
924	>	assertTrue(q.tryTransfer(hotPotato));
925		}});
926
927		assertSame(q.take(), hotPotato);
928		checkEmpty(q);
929	<	t.join();
929	>	awaitTermination(t, MEDIUM_DELAY_MS);
930		}
931
932		/**
933	<	* tryTransfer waits the amount given if interrupted, and
1049	<	* throws interrupted exception
933	>	* tryTransfer blocks interruptibly if no takers
934		*/
935		public void testTryTransfer5() throws InterruptedException {
936		final LinkedTransferQueue q = new LinkedTransferQueue();
937	+	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
938	+	assertTrue(q.isEmpty());
939
940	<	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
940	>	Thread t = newStartedThread(new CheckedRunnable() {
941		public void realRun() throws InterruptedException {
942	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
942	>	Thread.currentThread().interrupt();
943	>	try {
944	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
945	>	shouldThrow();
946	>	} catch (InterruptedException success) {}
947	>	assertFalse(Thread.interrupted());
948	>
949	>	pleaseInterrupt.countDown();
950	>	try {
951	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
952	>	shouldThrow();
953	>	} catch (InterruptedException success) {}
954	>	assertFalse(Thread.interrupted());
955		}});
956
957	<	Thread.sleep(SMALL_DELAY_MS);
958	<	toInterrupt.interrupt();
959	<	toInterrupt.join();
957	>	await(pleaseInterrupt);
958	>	assertThreadStaysAlive(t);
959	>	t.interrupt();
960	>	awaitTermination(t);
961	>	checkEmpty(q);
962		}
963
964		/**
965	<	* tryTransfer gives up after the timeout and return false
965	>	* tryTransfer gives up after the timeout and returns false
966		*/
967		public void testTryTransfer6() throws InterruptedException {
968		final LinkedTransferQueue q = new LinkedTransferQueue();
969
970		Thread t = newStartedThread(new CheckedRunnable() {
971		public void realRun() throws InterruptedException {
972	+	long startTime = System.nanoTime();
973		assertFalse(q.tryTransfer(new Object(),
974	<	SHORT_DELAY_MS, MILLISECONDS));
974	>	timeoutMillis(), MILLISECONDS));
975	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
976	>	checkEmpty(q);
977		}});
978
979	<	Thread.sleep(SMALL_DELAY_MS);
979	>	awaitTermination(t);
980		checkEmpty(q);
1078	–	t.join();
981		}
982
983		/**
#	Line 1089 | Line 991 | public class LinkedTransferQueueTest ext
991		Thread t = newStartedThread(new CheckedRunnable() {
992		public void realRun() throws InterruptedException {
993		assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
994	<	assertTrue(q.isEmpty());
994	>	checkEmpty(q);
995		}});
996
997	<	Thread.sleep(SHORT_DELAY_MS);
997	>	while (q.size() != 2)
998	>	Thread.yield();
999		assertEquals(2, q.size());
1000	<	assertEquals(four, q.poll());
1001	<	assertEquals(five, q.poll());
1000	>	assertSame(four, q.poll());
1001	>	assertSame(five, q.poll());
1002		checkEmpty(q);
1003	<	t.join();
1003	>	awaitTermination(t, MEDIUM_DELAY_MS);
1004		}
1005
1006		/**
1007	<	* tryTransfer attempts to enqueue into the q and fails returning
1008	<	* false not enqueueing and the successive poll is null
1007	>	* tryTransfer attempts to enqueue into the queue and fails
1008	>	* returning false not enqueueing and the successive poll is null
1009		*/
1010		public void testTryTransfer8() throws InterruptedException {
1011		final LinkedTransferQueue q = new LinkedTransferQueue();
1012		assertTrue(q.offer(four));
1013		assertEquals(1, q.size());
1014	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1014	>	long startTime = System.nanoTime();
1015	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
1016	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
1017		assertEquals(1, q.size());
1018	<	assertEquals(four, q.poll());
1018	>	assertSame(four, q.poll());
1019		assertNull(q.poll());
1020		checkEmpty(q);
1021		}
1022
1023		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1024		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1025	<	assertTrue(q.isEmpty());
1025	>	checkEmpty(q);
1026		for (int i = 0; i < n; i++) {
1027		assertEquals(i, q.size());
1028		assertTrue(q.offer(i));
#	Line 1126 | Line 1031 | public class LinkedTransferQueueTest ext
1031		assertFalse(q.isEmpty());
1032		return q;
1033		}
1034	+
1035	+	/**
1036	+	* remove(null), contains(null) always return false
1037	+	*/
1038	+	public void testNeverContainsNull() {
1039	+	Collection<?>[] qs = {
1040	+	new LinkedTransferQueue<Object>(),
1041	+	populatedQueue(2),
1042	+	};
1043	+
1044	+	for (Collection<?> q : qs) {
1045	+	assertFalse(q.contains(null));
1046	+	assertFalse(q.remove(null));
1047	+	}
1048	+	}
1049		}

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