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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 1.63 by jsr166, Sun Oct 4 18:49:02 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		for (int i = 0; i < SIZE; ++i) {
287		long t0 = System.nanoTime();
288		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
289	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
356	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
289	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
290		}
291	+	long t0 = System.nanoTime();
292	+	aboutToWait.countDown();
293		try {
294	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
294	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
295		shouldThrow();
296	<	} catch (InterruptedException success) {}
296	>	} catch (InterruptedException success) {
297	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
298	>	}
299		}});
300
301	<	Thread.sleep(SMALL_DELAY_MS);
301	>	aboutToWait.await();
302	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
303		t.interrupt();
304	<	t.join();
304	>	awaitTermination(t, MEDIUM_DELAY_MS);
305		checkEmpty(q);
306		}
307
308		/**
309	<	* timed poll before a delayed offer fails; after offer succeeds;
310	<	* on interruption throws
309	>	* timed poll after thread interrupted throws InterruptedException
310	>	* instead of returning timeout status
311		*/
312	<	public void testTimedPollWithOffer() throws InterruptedException {
313	<	final LinkedTransferQueue q = new LinkedTransferQueue();
314	<	Thread t = new Thread(new CheckedRunnable() {
312	>	public void testTimedPollAfterInterrupt() throws InterruptedException {
313	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
314	>	Thread t = newStartedThread(new CheckedRunnable() {
315		public void realRun() throws InterruptedException {
316	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
317	<	assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS));
316	>	Thread.currentThread().interrupt();
317	>	for (int i = 0; i < SIZE; ++i) {
318	>	long t0 = System.nanoTime();
319	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
320	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
321	>	}
322		try {
323	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
323	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
324		shouldThrow();
325		} catch (InterruptedException success) {}
326		}});
327
328	<	t.start();
329	<	Thread.sleep(SMALL_DELAY_MS);
388	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
389	<	t.interrupt();
390	<	t.join();
328	>	awaitTermination(t, MEDIUM_DELAY_MS);
329	>	checkEmpty(q);
330		}
331
332		/**
#	Line 437 | Line 376 | public class LinkedTransferQueueTest ext
376		}
377
378		/**
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	–	/**
379		* An add following remove(x) succeeds
380		*/
381		public void testRemoveElementAndAdd() throws InterruptedException {
#	Line 543 | Line 467 | public class LinkedTransferQueueTest ext
467		}
468
469		/**
470	<	* toArray() contains all elements
470	>	* toArray() contains all elements in FIFO order
471		*/
472	<	public void testToArray() throws InterruptedException {
472	>	public void testToArray() {
473		LinkedTransferQueue q = populatedQueue(SIZE);
474		Object[] o = q.toArray();
475		for (int i = 0; i < o.length; i++) {
476	<	assertEquals(o[i], q.take());
476	>	assertSame(o[i], q.poll());
477		}
478		}
479
480		/**
481	<	* toArray(a) contains all elements
481	>	* toArray(a) contains all elements in FIFO order
482		*/
483	<	public void testToArray2() throws InterruptedException {
483	>	public void testToArray2() {
484		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
485		Integer[] ints = new Integer[SIZE];
486	<	ints = q.toArray(ints);
486	>	Integer[] array = q.toArray(ints);
487	>	assertSame(ints, array);
488		for (int i = 0; i < ints.length; i++) {
489	<	assertEquals(ints[i], q.take());
489	>	assertSame(ints[i], q.poll());
490		}
491		}
492
493		/**
494	<	* 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
494	>	* toArray(incompatible array type) throws ArrayStoreException
495		*/
496		public void testToArray1_BadArg() {
497		LinkedTransferQueue q = populatedQueue(SIZE);
498		try {
499	<	Object o[] = q.toArray(new String[10]);
499	>	q.toArray(new String[10]);
500		shouldThrow();
501		} catch (ArrayStoreException success) {}
502		}
#	Line 593 | Line 507 | public class LinkedTransferQueueTest ext
507		public void testIterator() throws InterruptedException {
508		LinkedTransferQueue q = populatedQueue(SIZE);
509		Iterator it = q.iterator();
510	<	int i = 0;
511	<	while (it.hasNext()) {
512	<	assertEquals(it.next(), i++);
513	<	}
510	>	int i;
511	>	for (i = 0; it.hasNext(); i++)
512	>	assertTrue(q.contains(it.next()));
513	>	assertEquals(i, SIZE);
514	>	assertIteratorExhausted(it);
515	>
516	>	it = q.iterator();
517	>	for (i = 0; it.hasNext(); i++)
518	>	assertEquals(it.next(), q.take());
519		assertEquals(i, SIZE);
520	+	assertIteratorExhausted(it);
521	+	}
522	+
523	+	/**
524	+	* iterator of empty collection has no elements
525	+	*/
526	+	public void testEmptyIterator() {
527	+	assertIteratorExhausted(new LinkedTransferQueue().iterator());
528		}
529
530		/**
#	Line 614 | Line 541 | public class LinkedTransferQueueTest ext
541		it.remove();
542
543		it = q.iterator();
544	<	assertEquals(it.next(), one);
545	<	assertEquals(it.next(), three);
544	>	assertSame(it.next(), one);
545	>	assertSame(it.next(), three);
546		assertFalse(it.hasNext());
547		}
548
#	Line 659 | Line 586 | public class LinkedTransferQueueTest ext
586		LinkedTransferQueue q = populatedQueue(SIZE);
587		String s = q.toString();
588		for (int i = 0; i < SIZE; ++i) {
589	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
589	>	assertTrue(s.contains(String.valueOf(i)));
590		}
591		}
592
#	Line 668 | Line 595 | public class LinkedTransferQueueTest ext
595		*/
596		public void testOfferInExecutor() {
597		final LinkedTransferQueue q = new LinkedTransferQueue();
598	<	q.add(one);
599	<	q.add(two);
600	<	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	<	}});
598	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
599	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
600	>	try (PoolCleaner cleaner = cleaner(executor)) {
601
602	<	executor.execute(new CheckedRunnable() {
603	<	public void realRun() throws InterruptedException {
604	<	Thread.sleep(SMALL_DELAY_MS);
605	<	assertEquals(one, q.take());
606	<	}});
602	>	executor.execute(new CheckedRunnable() {
603	>	public void realRun() throws InterruptedException {
604	>	threadsStarted.await();
605	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
606	>	}});
607
608	<	joinPool(executor);
608	>	executor.execute(new CheckedRunnable() {
609	>	public void realRun() throws InterruptedException {
610	>	threadsStarted.await();
611	>	assertSame(one, q.take());
612	>	checkEmpty(q);
613	>	}});
614	>	}
615		}
616
617		/**
#	Line 691 | Line 619 | public class LinkedTransferQueueTest ext
619		*/
620		public void testPollInExecutor() {
621		final LinkedTransferQueue q = new LinkedTransferQueue();
622	<	ExecutorService executor = Executors.newFixedThreadPool(2);
623	<
624	<	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	<	}});
622	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
623	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
624	>	try (PoolCleaner cleaner = cleaner(executor)) {
625
626	<	executor.execute(new CheckedRunnable() {
627	<	public void realRun() throws InterruptedException {
628	<	Thread.sleep(SMALL_DELAY_MS);
629	<	q.put(one);
630	<	}});
626	>	executor.execute(new CheckedRunnable() {
627	>	public void realRun() throws InterruptedException {
628	>	assertNull(q.poll());
629	>	threadsStarted.await();
630	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
631	>	checkEmpty(q);
632	>	}});
633
634	<	joinPool(executor);
634	>	executor.execute(new CheckedRunnable() {
635	>	public void realRun() throws InterruptedException {
636	>	threadsStarted.await();
637	>	q.put(one);
638	>	}});
639	>	}
640		}
641
642		/**
643		* A deserialized serialized queue has same elements in same order
644		*/
645		public void testSerialization() throws Exception {
646	<	LinkedTransferQueue q = populatedQueue(SIZE);
647	<
718	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
719	<	ObjectOutputStream out
720	<	= new ObjectOutputStream(new BufferedOutputStream(bout));
721	<	out.writeObject(q);
722	<	out.close();
646	>	Queue x = populatedQueue(SIZE);
647	>	Queue y = serialClone(x);
648
649	<	ByteArrayInputStream bin
650	<	= new ByteArrayInputStream(bout.toByteArray());
651	<	ObjectInputStream in
652	<	= new ObjectInputStream(new BufferedInputStream(bin));
653	<	LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
654	<
655	<	assertEquals(q.size(), r.size());
731	<	while (!q.isEmpty()) {
732	<	assertEquals(q.remove(), r.remove());
649	>	assertNotSame(y, x);
650	>	assertEquals(x.size(), y.size());
651	>	assertEquals(x.toString(), y.toString());
652	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
653	>	while (!x.isEmpty()) {
654	>	assertFalse(y.isEmpty());
655	>	assertEquals(x.remove(), y.remove());
656		}
657	<	}
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) {}
657	>	assertTrue(y.isEmpty());
658		}
659
660		/**
#	Line 762 | Line 664 | public class LinkedTransferQueueTest ext
664		LinkedTransferQueue q = populatedQueue(SIZE);
665		ArrayList l = new ArrayList();
666		q.drainTo(l);
667	<	assertEquals(q.size(), 0);
668	<	assertEquals(l.size(), SIZE);
667	>	assertEquals(0, q.size());
668	>	assertEquals(SIZE, l.size());
669		for (int i = 0; i < SIZE; ++i) {
670	<	assertEquals(l.get(i), i);
670	>	assertEquals(i, l.get(i));
671		}
672		q.add(zero);
673		q.add(one);
#	Line 774 | Line 676 | public class LinkedTransferQueueTest ext
676		assertTrue(q.contains(one));
677		l.clear();
678		q.drainTo(l);
679	<	assertEquals(q.size(), 0);
680	<	assertEquals(l.size(), 2);
679	>	assertEquals(0, q.size());
680	>	assertEquals(2, l.size());
681		for (int i = 0; i < 2; ++i) {
682	<	assertEquals(l.get(i), i);
682	>	assertEquals(i, l.get(i));
683		}
684		}
685
#	Line 793 | Line 695 | public class LinkedTransferQueueTest ext
695		ArrayList l = new ArrayList();
696		q.drainTo(l);
697		assertTrue(l.size() >= SIZE);
698	<	for (int i = 0; i < SIZE; ++i) {
699	<	assertEquals(l.get(i), i);
700	<	}
799	<	t.join();
698	>	for (int i = 0; i < SIZE; ++i)
699	>	assertEquals(i, l.get(i));
700	>	awaitTermination(t, MEDIUM_DELAY_MS);
701		assertTrue(q.size() + l.size() >= SIZE);
702		}
703
704		/**
705	<	* 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
705	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
706		*/
707		public void testDrainToN() {
708		LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 834 | Line 713 | public class LinkedTransferQueueTest ext
713		ArrayList l = new ArrayList();
714		q.drainTo(l, i);
715		int k = (i < SIZE) ? i : SIZE;
716	<	assertEquals(l.size(), k);
717	<	assertEquals(q.size(), SIZE - k);
718	<	for (int j = 0; j < k; ++j) {
719	<	assertEquals(l.get(j), j);
720	<	}
842	<	while (q.poll() != null)
843	<	;
716	>	assertEquals(k, l.size());
717	>	assertEquals(SIZE - k, q.size());
718	>	for (int j = 0; j < k; ++j)
719	>	assertEquals(j, l.get(j));
720	>	do {} while (q.poll() != null);
721		}
722		}
723
#	Line 850 | Line 727 | public class LinkedTransferQueueTest ext
727		*/
728		public void testWaitingConsumer() throws InterruptedException {
729		final LinkedTransferQueue q = new LinkedTransferQueue();
730	<	assertEquals(q.getWaitingConsumerCount(), 0);
730	>	assertEquals(0, q.getWaitingConsumerCount());
731		assertFalse(q.hasWaitingConsumer());
732	+	final CountDownLatch threadStarted = new CountDownLatch(1);
733
734		Thread t = newStartedThread(new CheckedRunnable() {
735		public void realRun() throws InterruptedException {
736	<	Thread.sleep(SMALL_DELAY_MS);
737	<	assertTrue(q.hasWaitingConsumer());
738	<	assertEquals(q.getWaitingConsumerCount(), 1);
861	<	assertTrue(q.offer(one));
736	>	threadStarted.countDown();
737	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
738	>	assertEquals(0, q.getWaitingConsumerCount());
739		assertFalse(q.hasWaitingConsumer());
863	–	assertEquals(q.getWaitingConsumerCount(), 0);
740		}});
741
742	<	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
743	<	assertEquals(q.getWaitingConsumerCount(), 0);
742	>	threadStarted.await();
743	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
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, MEDIUM_DELAY_MS);
752		}
753
754		/**
#	Line 887 | 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, SMALL_DELAY_MS);
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, MEDIUM_DELAY_MS);
787		}
788
789		/**
#	Line 910 | 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));
916	<	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());
936	<	assertTrue(q.isEmpty());
819	>	checkEmpty(q);
820		}
821
822		/**
#	Line 946 | 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, MEDIUM_DELAY_MS);
843		}
844
845		/**
#	Line 966 | 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, MEDIUM_DELAY_MS);
866		}
867
868		/**
869		* tryTransfer(null) throws NullPointerException
870		*/
871		public void testTryTransfer1() {
872	+	final LinkedTransferQueue q = new LinkedTransferQueue();
873		try {
984	–	final LinkedTransferQueue q = new LinkedTransferQueue();
874		q.tryTransfer(null);
875		shouldThrow();
876		} catch (NullPointerException success) {}
#	Line 1010 | 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);
1016	<	threadAssertTrue(q.tryTransfer(hotPotato));
902	>	assertTrue(q.hasWaitingConsumer());
903	>	checkEmpty(q);
904	>	assertTrue(q.tryTransfer(hotPotato));
905		}});
906
907		assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
908		checkEmpty(q);
909	<	t.join();
909	>	awaitTermination(t, MEDIUM_DELAY_MS);
910		}
911
912		/**
#	Line 1033 | Line 921 | public class LinkedTransferQueueTest ext
921		public void realRun() {
922		while (! q.hasWaitingConsumer())
923		Thread.yield();
924	<	threadAssertTrue(q.hasWaitingConsumer());
925	<	threadAssertTrue(q.isEmpty());
926	<	threadAssertTrue(q.size() == 0);
1039	<	threadAssertTrue(q.tryTransfer(hotPotato));
924	>	assertTrue(q.hasWaitingConsumer());
925	>	checkEmpty(q);
926	>	assertTrue(q.tryTransfer(hotPotato));
927		}});
928
929		assertSame(q.take(), hotPotato);
930		checkEmpty(q);
931	<	t.join();
931	>	awaitTermination(t, MEDIUM_DELAY_MS);
932		}
933
934		/**
935	<	* tryTransfer waits the amount given if interrupted, and
1049	<	* throws interrupted exception
935	>	* tryTransfer blocks interruptibly if no takers
936		*/
937		public void testTryTransfer5() throws InterruptedException {
938		final LinkedTransferQueue q = new LinkedTransferQueue();
939	+	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
940	+	assertTrue(q.isEmpty());
941
942	<	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
942	>	Thread t = newStartedThread(new CheckedRunnable() {
943		public void realRun() throws InterruptedException {
944	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
944	>	Thread.currentThread().interrupt();
945	>	try {
946	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
947	>	shouldThrow();
948	>	} catch (InterruptedException success) {}
949	>	assertFalse(Thread.interrupted());
950	>
951	>	pleaseInterrupt.countDown();
952	>	try {
953	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
954	>	shouldThrow();
955	>	} catch (InterruptedException success) {}
956	>	assertFalse(Thread.interrupted());
957		}});
958
959	<	Thread.sleep(SMALL_DELAY_MS);
960	<	toInterrupt.interrupt();
961	<	toInterrupt.join();
959	>	await(pleaseInterrupt);
960	>	assertThreadStaysAlive(t);
961	>	t.interrupt();
962	>	awaitTermination(t);
963	>	checkEmpty(q);
964		}
965
966		/**
967	<	* tryTransfer gives up after the timeout and return false
967	>	* tryTransfer gives up after the timeout and returns false
968		*/
969		public void testTryTransfer6() throws InterruptedException {
970		final LinkedTransferQueue q = new LinkedTransferQueue();
971
972		Thread t = newStartedThread(new CheckedRunnable() {
973		public void realRun() throws InterruptedException {
974	+	long t0 = System.nanoTime();
975		assertFalse(q.tryTransfer(new Object(),
976	<	SHORT_DELAY_MS, MILLISECONDS));
976	>	timeoutMillis(), MILLISECONDS));
977	>	assertTrue(millisElapsedSince(t0) >= timeoutMillis());
978	>	checkEmpty(q);
979		}});
980
981	<	Thread.sleep(SMALL_DELAY_MS);
981	>	awaitTermination(t);
982		checkEmpty(q);
1078	–	t.join();
983		}
984
985		/**
#	Line 1089 | Line 993 | public class LinkedTransferQueueTest ext
993		Thread t = newStartedThread(new CheckedRunnable() {
994		public void realRun() throws InterruptedException {
995		assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
996	<	assertTrue(q.isEmpty());
996	>	checkEmpty(q);
997		}});
998
999	<	Thread.sleep(SHORT_DELAY_MS);
999	>	while (q.size() != 2)
1000	>	Thread.yield();
1001		assertEquals(2, q.size());
1002	<	assertEquals(four, q.poll());
1003	<	assertEquals(five, q.poll());
1002	>	assertSame(four, q.poll());
1003	>	assertSame(five, q.poll());
1004		checkEmpty(q);
1005	<	t.join();
1005	>	awaitTermination(t, MEDIUM_DELAY_MS);
1006		}
1007
1008		/**
1009	<	* tryTransfer attempts to enqueue into the q and fails returning
1010	<	* false not enqueueing and the successive poll is null
1009	>	* tryTransfer attempts to enqueue into the queue and fails
1010	>	* returning false not enqueueing and the successive poll is null
1011		*/
1012		public void testTryTransfer8() throws InterruptedException {
1013		final LinkedTransferQueue q = new LinkedTransferQueue();
1014		assertTrue(q.offer(four));
1015		assertEquals(1, q.size());
1016	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1016	>	long t0 = System.nanoTime();
1017	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
1018	>	assertTrue(millisElapsedSince(t0) >= timeoutMillis());
1019		assertEquals(1, q.size());
1020	<	assertEquals(four, q.poll());
1020	>	assertSame(four, q.poll());
1021		assertNull(q.poll());
1022		checkEmpty(q);
1023		}
1024
1025		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1026		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1027	<	assertTrue(q.isEmpty());
1027	>	checkEmpty(q);
1028		for (int i = 0; i < n; i++) {
1029		assertEquals(i, q.size());
1030		assertTrue(q.offer(i));
#	Line 1126 | Line 1033 | public class LinkedTransferQueueTest ext
1033		assertFalse(q.isEmpty());
1034		return q;
1035		}
1036	+
1037	+	/**
1038	+	* remove(null), contains(null) always return false
1039	+	*/
1040	+	public void testNeverContainsNull() {
1041	+	Collection<?>[] qs = {
1042	+	new LinkedTransferQueue<Object>(),
1043	+	populatedQueue(2),
1044	+	};
1045	+
1046	+	for (Collection<?> q : qs) {
1047	+	assertFalse(q.contains(null));
1048	+	assertFalse(q.remove(null));
1049	+	}
1050	+	}
1051		}

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