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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.25 by jsr166, Wed Oct 6 07:49:22 2010 UTC vs.
Revision 1.66 by jsr166, Sun Oct 18 04:48:32 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 class Generic extends BlockingQueueTest {
36		protected BlockingQueue emptyCollection() {
#	Line 31 | Line 39 | public class LinkedTransferQueueTest ext
39		}
40
41		public static void main(String[] args) {
42	<	junit.textui.TestRunner.run(suite());
42	>	main(suite(), args);
43		}
44
45		public static Test suite() {
46		return newTestSuite(LinkedTransferQueueTest.class,
47	<	new Generic().testSuite());
48	<	}
41	<
42	<	void checkEmpty(LinkedTransferQueue q) throws InterruptedException {
43	<	assertTrue(q.isEmpty());
44	<	assertEquals(0, q.size());
45	<	assertNull(q.peek());
46	<	assertNull(q.poll());
47	<	assertNull(q.poll(0, MILLISECONDS));
48	<	assertEquals(q.toString(), "[]");
49	<	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
50	<	assertFalse(q.iterator().hasNext());
51	<	try {
52	<	q.element();
53	<	shouldThrow();
54	<	} catch (NoSuchElementException success) {}
55	<	try {
56	<	q.iterator().next();
57	<	shouldThrow();
58	<	} catch (NoSuchElementException success) {}
59	<	try {
60	<	q.remove();
61	<	shouldThrow();
62	<	} catch (NoSuchElementException success) {}
47	>	new Generic().testSuite(),
48	>	CollectionTest.testSuite(new Implementation()));
49		}
50
51		/**
#	Line 87 | 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];
92	<	new LinkedTransferQueue(Arrays.asList(ints));
78	>	new LinkedTransferQueue(elements);
79		shouldThrow();
80		} catch (NullPointerException success) {}
81		}
#	Line 99 | 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];
104	<	for (int i = 0; i < SIZE - 1; ++i) {
105	<	ints[i] = i;
106	<	}
107	<	new LinkedTransferQueue(Arrays.asList(ints));
93	>	new LinkedTransferQueue(elements);
94		shouldThrow();
95		} catch (NullPointerException success) {}
96		}
#	Line 137 | 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		/**
154	–	* offer(null) throws NullPointerException
155	–	*/
156	–	public void testOfferNull() {
157	–	try {
158	–	LinkedTransferQueue q = new LinkedTransferQueue();
159	–	q.offer(null);
160	–	shouldThrow();
161	–	} catch (NullPointerException success) {}
162	–	}
163	–
164	–	/**
165	–	* add(null) throws NullPointerException
166	–	*/
167	–	public void testAddNull() {
168	–	try {
169	–	LinkedTransferQueue q = new LinkedTransferQueue();
170	–	q.add(null);
171	–	shouldThrow();
172	–	} catch (NullPointerException success) {}
173	–	}
174	–
175	–	/**
176	–	* addAll(null) throws NullPointerException
177	–	*/
178	–	public void testAddAll1() {
179	–	try {
180	–	LinkedTransferQueue q = new LinkedTransferQueue();
181	–	q.addAll(null);
182	–	shouldThrow();
183	–	} catch (NullPointerException success) {}
184	–	}
185	–
186	–	/**
140		* addAll(this) throws IllegalArgumentException
141		*/
142		public void testAddAllSelf() {
143	+	LinkedTransferQueue q = populatedQueue(SIZE);
144		try {
191	–	LinkedTransferQueue q = populatedQueue(SIZE);
145		q.addAll(q);
146		shouldThrow();
147		} catch (IllegalArgumentException success) {}
148		}
149
150		/**
198	–	* addAll of a collection with null elements throws NullPointerException
199	–	*/
200	–	public void testAddAll2() {
201	–	try {
202	–	LinkedTransferQueue q = new LinkedTransferQueue();
203	–	Integer[] ints = new Integer[SIZE];
204	–	q.addAll(Arrays.asList(ints));
205	–	shouldThrow();
206	–	} catch (NullPointerException success) {}
207	–	}
208	–
209	–	/**
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 {
215	–	LinkedTransferQueue q = new LinkedTransferQueue();
216	–	Integer[] ints = new Integer[SIZE];
217	–	for (int i = 0; i < SIZE - 1; ++i) {
218	–	ints[i] = i;
219	–	}
160		q.addAll(Arrays.asList(ints));
161		shouldThrow();
162		} catch (NullPointerException success) {}
#	Line 240 | Line 180 | public class LinkedTransferQueueTest ext
180		}
181
182		/**
243	–	* put(null) throws NullPointerException
244	–	*/
245	–	public void testPutNull() throws InterruptedException {
246	–	try {
247	–	LinkedTransferQueue q = new LinkedTransferQueue();
248	–	q.put(null);
249	–	shouldThrow();
250	–	} catch (NullPointerException success) {}
251	–	}
252	–
253	–	/**
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 273 | Line 202 | public class LinkedTransferQueueTest ext
202		}
203
204		/**
205	<	* take blocks interruptibly when empty
277	<	*/
278	<	public void testTakeFromEmpty() throws InterruptedException {
279	<	final LinkedTransferQueue q = new LinkedTransferQueue();
280	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
281	<	public void realRun() throws InterruptedException {
282	<	q.take();
283	<	}});
284	<	Thread.sleep(SHORT_DELAY_MS);
285	<	t.interrupt();
286	<	t.join();
287	<	}
288	<
289	<	/**
290	<	* 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();
309	<	checkEmpty(q);
234	>	awaitTermination(t);
235		}
236
237		/**
#	Line 322 | 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 334 | 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();
266	>	long startTime = System.nanoTime();
267	>	for (int i = 0; i < SIZE; ++i)
268		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
269	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
270	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
271	<	}
272	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
269	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
270	>
271	>	startTime = System.nanoTime();
272	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
273	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
274		checkEmpty(q);
275		}
276
#	Line 353 | 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();
286	>	long startTime = System.nanoTime();
287	>	for (int i = 0; i < SIZE; ++i)
288		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
289	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
363	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
364	<	}
289	>	aboutToWait.countDown();
290		try {
291		q.poll(LONG_DELAY_MS, MILLISECONDS);
292		shouldThrow();
293		} catch (InterruptedException success) {}
294	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
295		}});
296
297	<	Thread.sleep(SMALL_DELAY_MS);
297	>	aboutToWait.await();
298	>	waitForThreadToEnterWaitState(t);
299		t.interrupt();
300	<	t.join();
300	>	awaitTermination(t);
301	>	checkEmpty(q);
302	>	}
303	>
304	>	/**
305	>	* timed poll after thread interrupted throws InterruptedException
306	>	* instead of returning timeout status
307	>	*/
308	>	public void testTimedPollAfterInterrupt() throws InterruptedException {
309	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
310	>	Thread t = newStartedThread(new CheckedRunnable() {
311	>	public void realRun() throws InterruptedException {
312	>	long startTime = System.nanoTime();
313	>	Thread.currentThread().interrupt();
314	>	for (int i = 0; i < SIZE; ++i)
315	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
316	>	try {
317	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
318	>	shouldThrow();
319	>	} catch (InterruptedException success) {}
320	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
321	>	}});
322	>
323	>	awaitTermination(t);
324		checkEmpty(q);
325		}
326
#	Line 421 | Line 371 | public class LinkedTransferQueueTest ext
371		}
372
373		/**
424	–	* remove(x) removes x and returns true if present
425	–	*/
426	–	public void testRemoveElement() throws InterruptedException {
427	–	LinkedTransferQueue q = populatedQueue(SIZE);
428	–	for (int i = 1; i < SIZE; i += 2) {
429	–	assertTrue(q.remove(i));
430	–	}
431	–	for (int i = 0; i < SIZE; i += 2) {
432	–	assertTrue(q.remove(i));
433	–	assertFalse(q.remove(i + 1));
434	–	}
435	–	checkEmpty(q);
436	–	}
437	–
438	–	/**
374		* An add following remove(x) succeeds
375		*/
376		public void testRemoveElementAndAdd() throws InterruptedException {
#	Line 527 | Line 462 | public class LinkedTransferQueueTest ext
462		}
463
464		/**
465	<	* toArray() contains all elements
465	>	* toArray() contains all elements in FIFO order
466		*/
467	<	public void testToArray() throws InterruptedException {
467	>	public void testToArray() {
468		LinkedTransferQueue q = populatedQueue(SIZE);
469		Object[] o = q.toArray();
470		for (int i = 0; i < o.length; i++) {
471	<	assertEquals(o[i], q.take());
471	>	assertSame(o[i], q.poll());
472		}
473		}
474
475		/**
476	<	* toArray(a) contains all elements
476	>	* toArray(a) contains all elements in FIFO order
477		*/
478	<	public void testToArray2() throws InterruptedException {
478	>	public void testToArray2() {
479		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
480		Integer[] ints = new Integer[SIZE];
481	<	ints = q.toArray(ints);
481	>	Integer[] array = q.toArray(ints);
482	>	assertSame(ints, array);
483		for (int i = 0; i < ints.length; i++) {
484	<	assertEquals(ints[i], q.take());
484	>	assertSame(ints[i], q.poll());
485		}
486		}
487
488		/**
489	<	* toArray(null) throws NullPointerException
554	<	*/
555	<	public void testToArray_BadArg() {
556	<	LinkedTransferQueue q = populatedQueue(SIZE);
557	<	try {
558	<	Object o[] = q.toArray(null);
559	<	shouldThrow();
560	<	} catch (NullPointerException success) {}
561	<	}
562	<
563	<	/**
564	<	* toArray(incompatible array type) throws CCE
489	>	* toArray(incompatible array type) throws ArrayStoreException
490		*/
491		public void testToArray1_BadArg() {
492		LinkedTransferQueue q = populatedQueue(SIZE);
493		try {
494	<	Object o[] = q.toArray(new String[10]);
494	>	q.toArray(new String[10]);
495		shouldThrow();
496		} catch (ArrayStoreException success) {}
497		}
#	Line 577 | Line 502 | public class LinkedTransferQueueTest ext
502		public void testIterator() throws InterruptedException {
503		LinkedTransferQueue q = populatedQueue(SIZE);
504		Iterator it = q.iterator();
505	<	int i = 0;
506	<	while (it.hasNext()) {
507	<	assertEquals(it.next(), i++);
583	<	}
505	>	int i;
506	>	for (i = 0; it.hasNext(); i++)
507	>	assertTrue(q.contains(it.next()));
508		assertEquals(i, SIZE);
509	+	assertIteratorExhausted(it);
510	+
511	+	it = q.iterator();
512	+	for (i = 0; it.hasNext(); i++)
513	+	assertEquals(it.next(), q.take());
514	+	assertEquals(i, SIZE);
515	+	assertIteratorExhausted(it);
516	+	}
517	+
518	+	/**
519	+	* iterator of empty collection has no elements
520	+	*/
521	+	public void testEmptyIterator() {
522	+	assertIteratorExhausted(new LinkedTransferQueue().iterator());
523		}
524
525		/**
#	Line 643 | Line 581 | public class LinkedTransferQueueTest ext
581		LinkedTransferQueue q = populatedQueue(SIZE);
582		String s = q.toString();
583		for (int i = 0; i < SIZE; ++i) {
584	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
584	>	assertTrue(s.contains(String.valueOf(i)));
585		}
586		}
587
#	Line 652 | Line 590 | public class LinkedTransferQueueTest ext
590		*/
591		public void testOfferInExecutor() {
592		final LinkedTransferQueue q = new LinkedTransferQueue();
593	<	q.add(one);
594	<	q.add(two);
595	<	ExecutorService executor = Executors.newFixedThreadPool(2);
658	<
659	<	executor.execute(new CheckedRunnable() {
660	<	public void realRun() {
661	<	assertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS));
662	<	}});
593	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
594	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
595	>	try (PoolCleaner cleaner = cleaner(executor)) {
596
597	<	executor.execute(new CheckedRunnable() {
598	<	public void realRun() throws InterruptedException {
599	<	Thread.sleep(SMALL_DELAY_MS);
600	<	assertSame(one, q.take());
601	<	}});
597	>	executor.execute(new CheckedRunnable() {
598	>	public void realRun() throws InterruptedException {
599	>	threadsStarted.await();
600	>	long startTime = System.nanoTime();
601	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
602	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
603	>	}});
604
605	<	joinPool(executor);
605	>	executor.execute(new CheckedRunnable() {
606	>	public void realRun() throws InterruptedException {
607	>	threadsStarted.await();
608	>	assertSame(one, q.take());
609	>	checkEmpty(q);
610	>	}});
611	>	}
612		}
613
614		/**
#	Line 675 | Line 616 | public class LinkedTransferQueueTest ext
616		*/
617		public void testPollInExecutor() {
618		final LinkedTransferQueue q = new LinkedTransferQueue();
619	<	ExecutorService executor = Executors.newFixedThreadPool(2);
620	<
621	<	executor.execute(new CheckedRunnable() {
681	<	public void realRun() throws InterruptedException {
682	<	assertNull(q.poll());
683	<	assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
684	<	assertTrue(q.isEmpty());
685	<	}});
619	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
620	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
621	>	try (PoolCleaner cleaner = cleaner(executor)) {
622
623	<	executor.execute(new CheckedRunnable() {
624	<	public void realRun() throws InterruptedException {
625	<	Thread.sleep(SMALL_DELAY_MS);
626	<	q.put(one);
627	<	}});
623	>	executor.execute(new CheckedRunnable() {
624	>	public void realRun() throws InterruptedException {
625	>	assertNull(q.poll());
626	>	threadsStarted.await();
627	>	long startTime = System.nanoTime();
628	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
629	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
630	>	checkEmpty(q);
631	>	}});
632
633	<	joinPool(executor);
633	>	executor.execute(new CheckedRunnable() {
634	>	public void realRun() throws InterruptedException {
635	>	threadsStarted.await();
636	>	q.put(one);
637	>	}});
638	>	}
639		}
640
641		/**
642		* A deserialized serialized queue has same elements in same order
643		*/
644		public void testSerialization() throws Exception {
645	<	LinkedTransferQueue q = populatedQueue(SIZE);
645	>	Queue x = populatedQueue(SIZE);
646	>	Queue y = serialClone(x);
647
648	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
649	<	ObjectOutputStream out
650	<	= new ObjectOutputStream(new BufferedOutputStream(bout));
651	<	out.writeObject(q);
652	<	out.close();
653	<
654	<	ByteArrayInputStream bin
709	<	= new ByteArrayInputStream(bout.toByteArray());
710	<	ObjectInputStream in
711	<	= new ObjectInputStream(new BufferedInputStream(bin));
712	<	LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
713	<
714	<	assertEquals(q.size(), r.size());
715	<	while (!q.isEmpty()) {
716	<	assertEquals(q.remove(), r.remove());
648	>	assertNotSame(y, x);
649	>	assertEquals(x.size(), y.size());
650	>	assertEquals(x.toString(), y.toString());
651	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
652	>	while (!x.isEmpty()) {
653	>	assertFalse(y.isEmpty());
654	>	assertEquals(x.remove(), y.remove());
655		}
656	<	}
719	<
720	<	/**
721	<	* drainTo(null) throws NullPointerException
722	<	*/
723	<	public void testDrainToNull() {
724	<	LinkedTransferQueue q = populatedQueue(SIZE);
725	<	try {
726	<	q.drainTo(null);
727	<	shouldThrow();
728	<	} catch (NullPointerException success) {}
729	<	}
730	<
731	<	/**
732	<	* drainTo(this) throws IllegalArgumentException
733	<	*/
734	<	public void testDrainToSelf() {
735	<	LinkedTransferQueue q = populatedQueue(SIZE);
736	<	try {
737	<	q.drainTo(q);
738	<	shouldThrow();
739	<	} catch (IllegalArgumentException success) {}
656	>	assertTrue(y.isEmpty());
657		}
658
659		/**
#	Line 746 | Line 663 | public class LinkedTransferQueueTest ext
663		LinkedTransferQueue q = populatedQueue(SIZE);
664		ArrayList l = new ArrayList();
665		q.drainTo(l);
666	<	assertEquals(q.size(), 0);
667	<	assertEquals(l.size(), SIZE);
666	>	assertEquals(0, q.size());
667	>	assertEquals(SIZE, l.size());
668		for (int i = 0; i < SIZE; ++i) {
669	<	assertEquals(l.get(i), i);
669	>	assertEquals(i, l.get(i));
670		}
671		q.add(zero);
672		q.add(one);
#	Line 758 | Line 675 | public class LinkedTransferQueueTest ext
675		assertTrue(q.contains(one));
676		l.clear();
677		q.drainTo(l);
678	<	assertEquals(q.size(), 0);
679	<	assertEquals(l.size(), 2);
678	>	assertEquals(0, q.size());
679	>	assertEquals(2, l.size());
680		for (int i = 0; i < 2; ++i) {
681	<	assertEquals(l.get(i), i);
681	>	assertEquals(i, l.get(i));
682		}
683		}
684
#	Line 777 | Line 694 | public class LinkedTransferQueueTest ext
694		ArrayList l = new ArrayList();
695		q.drainTo(l);
696		assertTrue(l.size() >= SIZE);
697	<	for (int i = 0; i < SIZE; ++i) {
698	<	assertEquals(l.get(i), i);
699	<	}
783	<	t.join();
697	>	for (int i = 0; i < SIZE; ++i)
698	>	assertEquals(i, l.get(i));
699	>	awaitTermination(t);
700		assertTrue(q.size() + l.size() >= SIZE);
701		}
702
703		/**
704	<	* drainTo(null, n) throws NullPointerException
789	<	*/
790	<	public void testDrainToNullN() {
791	<	LinkedTransferQueue q = populatedQueue(SIZE);
792	<	try {
793	<	q.drainTo(null, SIZE);
794	<	shouldThrow();
795	<	} catch (NullPointerException success) {}
796	<	}
797	<
798	<	/**
799	<	* drainTo(this, n) throws IllegalArgumentException
800	<	*/
801	<	public void testDrainToSelfN() {
802	<	LinkedTransferQueue q = populatedQueue(SIZE);
803	<	try {
804	<	q.drainTo(q, SIZE);
805	<	shouldThrow();
806	<	} catch (IllegalArgumentException success) {}
807	<	}
808	<
809	<	/**
810	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
704	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
705		*/
706		public void testDrainToN() {
707		LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 818 | Line 712 | public class LinkedTransferQueueTest ext
712		ArrayList l = new ArrayList();
713		q.drainTo(l, i);
714		int k = (i < SIZE) ? i : SIZE;
715	<	assertEquals(l.size(), k);
716	<	assertEquals(q.size(), SIZE - k);
717	<	for (int j = 0; j < k; ++j) {
718	<	assertEquals(l.get(j), j);
719	<	}
826	<	while (q.poll() != null)
827	<	;
715	>	assertEquals(k, l.size());
716	>	assertEquals(SIZE - k, q.size());
717	>	for (int j = 0; j < k; ++j)
718	>	assertEquals(j, l.get(j));
719	>	do {} while (q.poll() != null);
720		}
721		}
722
#	Line 834 | Line 726 | public class LinkedTransferQueueTest ext
726		*/
727		public void testWaitingConsumer() throws InterruptedException {
728		final LinkedTransferQueue q = new LinkedTransferQueue();
729	<	assertEquals(q.getWaitingConsumerCount(), 0);
729	>	assertEquals(0, q.getWaitingConsumerCount());
730		assertFalse(q.hasWaitingConsumer());
731	+	final CountDownLatch threadStarted = new CountDownLatch(1);
732
733		Thread t = newStartedThread(new CheckedRunnable() {
734		public void realRun() throws InterruptedException {
735	<	Thread.sleep(SMALL_DELAY_MS);
736	<	assertTrue(q.hasWaitingConsumer());
737	<	assertEquals(q.getWaitingConsumerCount(), 1);
738	<	assertTrue(q.offer(one));
735	>	threadStarted.countDown();
736	>	long startTime = System.nanoTime();
737	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
738	>	assertEquals(0, q.getWaitingConsumerCount());
739		assertFalse(q.hasWaitingConsumer());
740	<	assertEquals(q.getWaitingConsumerCount(), 0);
740	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
741		}});
742
743	<	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
744	<	assertEquals(q.getWaitingConsumerCount(), 0);
743	>	threadStarted.await();
744	>	waitForThreadToEnterWaitState(t);
745	>	assertEquals(1, q.getWaitingConsumerCount());
746	>	assertTrue(q.hasWaitingConsumer());
747	>
748	>	assertTrue(q.offer(one));
749	>	assertEquals(0, q.getWaitingConsumerCount());
750		assertFalse(q.hasWaitingConsumer());
751	<	t.join();
751	>
752	>	awaitTermination(t);
753		}
754
755		/**
#	Line 871 | Line 770 | public class LinkedTransferQueueTest ext
770		public void testTransfer2() throws InterruptedException {
771		final LinkedTransferQueue<Integer> q
772		= new LinkedTransferQueue<Integer>();
773	+	final CountDownLatch threadStarted = new CountDownLatch(1);
774
775		Thread t = newStartedThread(new CheckedRunnable() {
776		public void realRun() throws InterruptedException {
777	<	q.transfer(SIZE);
778	<	assertTrue(q.isEmpty());
777	>	threadStarted.countDown();
778	>	q.transfer(five);
779	>	checkEmpty(q);
780		}});
781
782	<	Thread.sleep(SHORT_DELAY_MS);
782	>	threadStarted.await();
783	>	waitForThreadToEnterWaitState(t);
784		assertEquals(1, q.size());
785	<	assertEquals(SIZE, (int) q.poll());
786	<	assertTrue(q.isEmpty());
787	<	t.join();
785	>	assertSame(five, q.poll());
786	>	checkEmpty(q);
787	>	awaitTermination(t);
788		}
789
790		/**
#	Line 894 | Line 796 | public class LinkedTransferQueueTest ext
796
797		Thread first = newStartedThread(new CheckedRunnable() {
798		public void realRun() throws InterruptedException {
799	<	Integer i = SIZE + 1;
800	<	q.transfer(i);
899	<	assertTrue(!q.contains(i));
799	>	q.transfer(four);
800	>	assertTrue(!q.contains(four));
801		assertEquals(1, q.size());
802		}});
803
804		Thread interruptedThread = newStartedThread(
805		new CheckedInterruptedRunnable() {
806		public void realRun() throws InterruptedException {
807	<	while (q.size() == 0)
807	>	while (q.isEmpty())
808		Thread.yield();
809	<	q.transfer(SIZE);
809	>	q.transfer(five);
810		}});
811
812		while (q.size() < 2)
813		Thread.yield();
814		assertEquals(2, q.size());
815	<	assertEquals(SIZE + 1, (int) q.poll());
815	>	assertSame(four, q.poll());
816		first.join();
817		assertEquals(1, q.size());
818		interruptedThread.interrupt();
819		interruptedThread.join();
820	<	assertEquals(0, q.size());
920	<	assertTrue(q.isEmpty());
820	>	checkEmpty(q);
821		}
822
823		/**
#	Line 934 | Line 834 | public class LinkedTransferQueueTest ext
834		assertSame(three, q.poll());
835		}});
836
837	<	Thread.sleep(SHORT_DELAY_MS);
837	>	while (q.isEmpty())
838	>	Thread.yield();
839	>	assertFalse(q.isEmpty());
840	>	assertEquals(1, q.size());
841		assertTrue(q.offer(three));
842		assertSame(four, q.poll());
843	<	t.join();
843	>	awaitTermination(t);
844		}
845
846		/**
#	Line 950 | Line 853 | public class LinkedTransferQueueTest ext
853
854		Thread t = newStartedThread(new CheckedRunnable() {
855		public void realRun() throws InterruptedException {
856	<	q.transfer(SIZE);
856	>	q.transfer(four);
857		checkEmpty(q);
858		}});
859
860	<	Thread.sleep(SHORT_DELAY_MS);
861	<	assertEquals(SIZE, (int) q.take());
860	>	while (q.isEmpty())
861	>	Thread.yield();
862	>	assertFalse(q.isEmpty());
863	>	assertEquals(1, q.size());
864	>	assertSame(four, q.take());
865		checkEmpty(q);
866	<	t.join();
866	>	awaitTermination(t);
867		}
868
869		/**
870		* tryTransfer(null) throws NullPointerException
871		*/
872		public void testTryTransfer1() {
873	+	final LinkedTransferQueue q = new LinkedTransferQueue();
874		try {
968	–	final LinkedTransferQueue q = new LinkedTransferQueue();
875		q.tryTransfer(null);
876		shouldThrow();
877		} catch (NullPointerException success) {}
#	Line 995 | Line 901 | public class LinkedTransferQueueTest ext
901		while (! q.hasWaitingConsumer())
902		Thread.yield();
903		assertTrue(q.hasWaitingConsumer());
904	<	assertTrue(q.isEmpty());
999	<	assertEquals(q.size(), 0);
904	>	checkEmpty(q);
905		assertTrue(q.tryTransfer(hotPotato));
906		}});
907
908	<	assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
908	>	long startTime = System.nanoTime();
909	>	assertSame(hotPotato, q.poll(LONG_DELAY_MS, MILLISECONDS));
910	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
911		checkEmpty(q);
912	<	t.join();
912	>	awaitTermination(t);
913		}
914
915		/**
#	Line 1018 | Line 925 | public class LinkedTransferQueueTest ext
925		while (! q.hasWaitingConsumer())
926		Thread.yield();
927		assertTrue(q.hasWaitingConsumer());
928	<	assertTrue(q.isEmpty());
1022	<	assertEquals(q.size(), 0);
928	>	checkEmpty(q);
929		assertTrue(q.tryTransfer(hotPotato));
930		}});
931
932		assertSame(q.take(), hotPotato);
933		checkEmpty(q);
934	<	t.join();
934	>	awaitTermination(t);
935		}
936
937		/**
938	<	* tryTransfer waits the amount given if interrupted, and
1033	<	* throws interrupted exception
938	>	* tryTransfer blocks interruptibly if no takers
939		*/
940		public void testTryTransfer5() throws InterruptedException {
941		final LinkedTransferQueue q = new LinkedTransferQueue();
942	+	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
943	+	assertTrue(q.isEmpty());
944
945	<	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
945	>	Thread t = newStartedThread(new CheckedRunnable() {
946		public void realRun() throws InterruptedException {
947	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
947	>	long startTime = System.nanoTime();
948	>	Thread.currentThread().interrupt();
949	>	try {
950	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
951	>	shouldThrow();
952	>	} catch (InterruptedException success) {}
953	>	assertFalse(Thread.interrupted());
954	>
955	>	pleaseInterrupt.countDown();
956	>	try {
957	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
958	>	shouldThrow();
959	>	} catch (InterruptedException success) {}
960	>	assertFalse(Thread.interrupted());
961	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
962		}});
963
964	<	Thread.sleep(SMALL_DELAY_MS);
965	<	toInterrupt.interrupt();
966	<	toInterrupt.join();
964	>	await(pleaseInterrupt);
965	>	assertThreadStaysAlive(t);
966	>	t.interrupt();
967	>	awaitTermination(t);
968	>	checkEmpty(q);
969		}
970
971		/**
972	<	* tryTransfer gives up after the timeout and return false
972	>	* tryTransfer gives up after the timeout and returns false
973		*/
974		public void testTryTransfer6() throws InterruptedException {
975		final LinkedTransferQueue q = new LinkedTransferQueue();
976
977		Thread t = newStartedThread(new CheckedRunnable() {
978		public void realRun() throws InterruptedException {
979	+	long startTime = System.nanoTime();
980		assertFalse(q.tryTransfer(new Object(),
981	<	SHORT_DELAY_MS, MILLISECONDS));
981	>	timeoutMillis(), MILLISECONDS));
982	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
983	>	checkEmpty(q);
984		}});
985
986	<	Thread.sleep(SMALL_DELAY_MS);
986	>	awaitTermination(t);
987		checkEmpty(q);
1062	–	t.join();
988		}
989
990		/**
#	Line 1072 | Line 997 | public class LinkedTransferQueueTest ext
997
998		Thread t = newStartedThread(new CheckedRunnable() {
999		public void realRun() throws InterruptedException {
1000	<	assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
1001	<	assertTrue(q.isEmpty());
1000	>	long startTime = System.nanoTime();
1001	>	assertTrue(q.tryTransfer(five, LONG_DELAY_MS, MILLISECONDS));
1002	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1003	>	checkEmpty(q);
1004		}});
1005
1006	<	Thread.sleep(SHORT_DELAY_MS);
1006	>	while (q.size() != 2)
1007	>	Thread.yield();
1008		assertEquals(2, q.size());
1009		assertSame(four, q.poll());
1010		assertSame(five, q.poll());
1011		checkEmpty(q);
1012	<	t.join();
1012	>	awaitTermination(t);
1013		}
1014
1015		/**
1016	<	* tryTransfer attempts to enqueue into the q and fails returning
1017	<	* false not enqueueing and the successive poll is null
1016	>	* tryTransfer attempts to enqueue into the queue and fails
1017	>	* returning false not enqueueing and the successive poll is null
1018		*/
1019		public void testTryTransfer8() throws InterruptedException {
1020		final LinkedTransferQueue q = new LinkedTransferQueue();
1021		assertTrue(q.offer(four));
1022		assertEquals(1, q.size());
1023	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1023	>	long startTime = System.nanoTime();
1024	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
1025	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
1026		assertEquals(1, q.size());
1027		assertSame(four, q.poll());
1028		assertNull(q.poll());
#	Line 1101 | Line 1031 | public class LinkedTransferQueueTest ext
1031
1032		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1033		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1034	<	assertTrue(q.isEmpty());
1034	>	checkEmpty(q);
1035		for (int i = 0; i < n; i++) {
1036		assertEquals(i, q.size());
1037		assertTrue(q.offer(i));
#	Line 1110 | Line 1040 | public class LinkedTransferQueueTest ext
1040		assertFalse(q.isEmpty());
1041		return q;
1042		}
1043	+
1044	+	/**
1045	+	* remove(null), contains(null) always return false
1046	+	*/
1047	+	public void testNeverContainsNull() {
1048	+	Collection<?>[] qs = {
1049	+	new LinkedTransferQueue<Object>(),
1050	+	populatedQueue(2),
1051	+	};
1052	+
1053	+	for (Collection<?> q : qs) {
1054	+	assertFalse(q.contains(null));
1055	+	assertFalse(q.remove(null));
1056	+	}
1057	+	}
1058		}

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