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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.8 by jsr166, Tue Aug 4 20:35:11 2009 UTC vs.
Revision 1.31 by jsr166, Thu Oct 28 22:42:05 2010 UTC

#	Line 13 | Line 13 | import java.io.ObjectInputStream;
13		import java.io.ObjectOutputStream;
14		import java.util.ArrayList;
15		import java.util.Arrays;
16	–	import java.util.ConcurrentModificationException;
16		import java.util.Iterator;
17	+	import java.util.List;
18		import java.util.NoSuchElementException;
19		import java.util.concurrent.*;
20		import static java.util.concurrent.TimeUnit.MILLISECONDS;
21	+	import static java.util.concurrent.TimeUnit.NANOSECONDS;
22		import junit.framework.Test;
23		import junit.framework.TestSuite;
24
25	+	@SuppressWarnings({"unchecked", "rawtypes"})
26		public class LinkedTransferQueueTest extends JSR166TestCase {
27
28	+	public static class Generic extends BlockingQueueTest {
29	+	protected BlockingQueue emptyCollection() {
30	+	return new LinkedTransferQueue();
31	+	}
32	+	}
33	+
34		public static void main(String[] args) {
35		junit.textui.TestRunner.run(suite());
36		}
37
38		public static Test suite() {
39	<	return new TestSuite(LinkedTransferQueueTest.class);
39	>	return newTestSuite(LinkedTransferQueueTest.class,
40	>	new Generic().testSuite());
41	>	}
42	>
43	>	void checkEmpty(BlockingQueue q) {
44	>	try {
45	>	assertTrue(q.isEmpty());
46	>	assertEquals(0, q.size());
47	>	assertNull(q.peek());
48	>	assertNull(q.poll());
49	>	assertNull(q.poll(0, MILLISECONDS));
50	>	assertEquals(q.toString(), "[]");
51	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
52	>	assertFalse(q.iterator().hasNext());
53	>	try {
54	>	q.element();
55	>	shouldThrow();
56	>	} catch (NoSuchElementException success) {}
57	>	try {
58	>	q.iterator().next();
59	>	shouldThrow();
60	>	} catch (NoSuchElementException success) {}
61	>	try {
62	>	q.remove();
63	>	shouldThrow();
64	>	} catch (NoSuchElementException success) {}
65	>	} catch (InterruptedException ie) {
66	>	threadUnexpectedException(ie);
67	>	}
68		}
69
70		/**
#	Line 48 | Line 84 | public class LinkedTransferQueueTest ext
84		try {
85		new LinkedTransferQueue(null);
86		shouldThrow();
87	<	} catch (NullPointerException success) {
52	<	}
87	>	} catch (NullPointerException success) {}
88		}
89
90		/**
#	Line 61 | Line 96 | public class LinkedTransferQueueTest ext
96		Integer[] ints = new Integer[SIZE];
97		new LinkedTransferQueue(Arrays.asList(ints));
98		shouldThrow();
99	<	} catch (NullPointerException success) {
65	<	}
99	>	} catch (NullPointerException success) {}
100		}
101
102		/**
#	Line 77 | Line 111 | public class LinkedTransferQueueTest ext
111		}
112		new LinkedTransferQueue(Arrays.asList(ints));
113		shouldThrow();
114	<	} catch (NullPointerException success) {
81	<	}
114	>	} catch (NullPointerException success) {}
115		}
116
117		/**
118		* Queue contains all elements of the collection it is initialized by
119		*/
120		public void testConstructor5() {
121	<	try {
122	<	Integer[] ints = new Integer[SIZE];
123	<	for (int i = 0; i < SIZE; ++i) {
124	<	ints[i] = i;
125	<	}
126	<	LinkedTransferQueue q
127	<	= new LinkedTransferQueue(Arrays.asList(ints));
128	<	for (int i = 0; i < SIZE; ++i) {
129	<	assertEquals(ints[i], q.poll());
130	<	}
131	<	} finally {
121	>	Integer[] ints = new Integer[SIZE];
122	>	for (int i = 0; i < SIZE; ++i) {
123	>	ints[i] = i;
124	>	}
125	>	List intList = Arrays.asList(ints);
126	>	LinkedTransferQueue q
127	>	= new LinkedTransferQueue(intList);
128	>	assertEquals(q.size(), intList.size());
129	>	assertEquals(q.toString(), intList.toString());
130	>	assertTrue(Arrays.equals(q.toArray(),
131	>	intList.toArray()));
132	>	assertTrue(Arrays.equals(q.toArray(new Object[0]),
133	>	intList.toArray(new Object[0])));
134	>	assertTrue(Arrays.equals(q.toArray(new Object[SIZE]),
135	>	intList.toArray(new Object[SIZE])));
136	>	for (int i = 0; i < SIZE; ++i) {
137	>	assertEquals(ints[i], q.poll());
138		}
139		}
140
141		/**
142	<	* Remaining capacity never decrease nor increase on add or remove
142	>	* remainingCapacity() always returns Integer.MAX_VALUE
143		*/
144		public void testRemainingCapacity() {
145		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
#	Line 124 | Line 163 | public class LinkedTransferQueueTest ext
163		LinkedTransferQueue q = new LinkedTransferQueue();
164		q.offer(null);
165		shouldThrow();
166	<	} catch (NullPointerException success) {
128	<	}
166	>	} catch (NullPointerException success) {}
167		}
168
169		/**
#	Line 136 | Line 174 | public class LinkedTransferQueueTest ext
174		LinkedTransferQueue q = new LinkedTransferQueue();
175		q.add(null);
176		shouldThrow();
177	<	} catch (NullPointerException success) {
140	<	}
177	>	} catch (NullPointerException success) {}
178		}
179
180		/**
#	Line 148 | Line 185 | public class LinkedTransferQueueTest ext
185		LinkedTransferQueue q = new LinkedTransferQueue();
186		q.addAll(null);
187		shouldThrow();
188	<	} catch (NullPointerException success) {
152	<	}
188	>	} catch (NullPointerException success) {}
189		}
190
191		/**
#	Line 160 | Line 196 | public class LinkedTransferQueueTest ext
196		LinkedTransferQueue q = populatedQueue(SIZE);
197		q.addAll(q);
198		shouldThrow();
199	<	} catch (IllegalArgumentException success) {
164	<	}
199	>	} catch (IllegalArgumentException success) {}
200		}
201
202		/**
#	Line 173 | Line 208 | public class LinkedTransferQueueTest ext
208		Integer[] ints = new Integer[SIZE];
209		q.addAll(Arrays.asList(ints));
210		shouldThrow();
211	<	} catch (NullPointerException success) {
177	<	}
211	>	} catch (NullPointerException success) {}
212		}
213
214		/**
#	Line 190 | Line 224 | public class LinkedTransferQueueTest ext
224		}
225		q.addAll(Arrays.asList(ints));
226		shouldThrow();
227	<	} catch (NullPointerException success) {
194	<	}
227	>	} catch (NullPointerException success) {}
228		}
229
230		/**
#	Line 228 | Line 261 | public class LinkedTransferQueueTest ext
261		public void testPut() {
262		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
263		for (int i = 0; i < SIZE; ++i) {
264	+	assertEquals(q.size(), i);
265		q.put(i);
266		assertTrue(q.contains(i));
267		}
234	–	assertEquals(q.size(), SIZE);
268		}
269
270		/**
#	Line 245 | Line 278 | public class LinkedTransferQueueTest ext
278		}
279
280		/**
281	<	* take blocks interruptibly when empty
249	<	*/
250	<	public void testTakeFromEmpty() throws InterruptedException {
251	<	final LinkedTransferQueue q = new LinkedTransferQueue();
252	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
253	<	void realRun() throws InterruptedException {
254	<	q.take();
255	<	}});
256	<	t.start();
257	<	Thread.sleep(SHORT_DELAY_MS);
258	<	t.interrupt();
259	<	t.join();
260	<	}
261	<
262	<	/**
263	<	* Take removes existing elements until empty, then blocks interruptibly
281	>	* take removes existing elements until empty, then blocks interruptibly
282		*/
283		public void testBlockingTake() throws InterruptedException {
284	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
285	<	void realRun() throws InterruptedException {
286	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
284	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
285	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
286	>	Thread t = newStartedThread(new CheckedRunnable() {
287	>	public void realRun() throws InterruptedException {
288		for (int i = 0; i < SIZE; ++i) {
289	<	threadAssertEquals(i, (int) q.take());
289	>	assertEquals(i, (int) q.take());
290		}
291	<	q.take();
291	>	aboutToWait.countDown();
292	>	try {
293	>	q.take();
294	>	shouldThrow();
295	>	} catch (InterruptedException success) {}
296		}});
297	<	t.start();
298	<	Thread.sleep(SHORT_DELAY_MS);
297	>
298	>	aboutToWait.await();
299	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
300		t.interrupt();
301	<	t.join();
301	>	awaitTermination(t, MEDIUM_DELAY_MS);
302	>	checkEmpty(q);
303		}
304
305		/**
306		* poll succeeds unless empty
307		*/
308	<	public void testPoll() {
308	>	public void testPoll() throws InterruptedException {
309		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
310		for (int i = 0; i < SIZE; ++i) {
311		assertEquals(i, (int) q.poll());
312		}
313		assertNull(q.poll());
314	+	checkEmpty(q);
315		}
316
317		/**
318	<	* timed pool with zero timeout succeeds when non-empty, else times out
318	>	* timed poll with zero timeout succeeds when non-empty, else times out
319		*/
320		public void testTimedPoll0() throws InterruptedException {
321		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
#	Line 297 | Line 323 | public class LinkedTransferQueueTest ext
323		assertEquals(i, (int) q.poll(0, MILLISECONDS));
324		}
325		assertNull(q.poll(0, MILLISECONDS));
326	+	checkEmpty(q);
327		}
328
329		/**
330	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
330	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
331		*/
332		public void testTimedPoll() throws InterruptedException {
333		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
334		for (int i = 0; i < SIZE; ++i) {
335	<	assertEquals(i, (int) q.poll(SHORT_DELAY_MS, MILLISECONDS));
335	>	long t0 = System.nanoTime();
336	>	assertEquals(i, (int) q.poll(SMALL_DELAY_MS, MILLISECONDS));
337	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
338		}
339	+	long t0 = System.nanoTime();
340		assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
341	+	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
342	+	checkEmpty(q);
343		}
344
345		/**
#	Line 315 | Line 347 | public class LinkedTransferQueueTest ext
347		* returning timeout status
348		*/
349		public void testInterruptedTimedPoll() throws InterruptedException {
350	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
351	<	void realRun() throws InterruptedException {
352	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
350	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
351	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
352	>	Thread t = newStartedThread(new CheckedRunnable() {
353	>	public void realRun() throws InterruptedException {
354		for (int i = 0; i < SIZE; ++i) {
355	<	threadAssertEquals(i, (int) q.poll(SHORT_DELAY_MS,
356	<	MILLISECONDS));
355	>	long t0 = System.nanoTime();
356	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
357	>	assertTrue(millisElapsedSince(t0) < SHORT_DELAY_MS);
358		}
359	<	q.poll(SHORT_DELAY_MS, MILLISECONDS);
359	>	aboutToWait.countDown();
360	>	try {
361	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
362	>	shouldThrow();
363	>	} catch (InterruptedException success) {}
364		}});
365	<	t.start();
366	<	Thread.sleep(SHORT_DELAY_MS);
365	>
366	>	aboutToWait.await();
367	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
368		t.interrupt();
369	<	t.join();
369	>	awaitTermination(t, MEDIUM_DELAY_MS);
370	>	checkEmpty(q);
371		}
372
373		/**
374	<	* timed poll before a delayed offer fails; after offer succeeds;
375	<	* on interruption throws
374	>	* timed poll after thread interrupted throws InterruptedException
375	>	* instead of returning timeout status
376		*/
377	<	public void testTimedPollWithOffer() throws InterruptedException {
378	<	final LinkedTransferQueue q = new LinkedTransferQueue();
379	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
380	<	void realRun() throws InterruptedException {
381	<	threadAssertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
382	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
383	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
377	>	public void testTimedPollAfterInterrupt() throws InterruptedException {
378	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
379	>	Thread t = newStartedThread(new CheckedRunnable() {
380	>	public void realRun() throws InterruptedException {
381	>	Thread.currentThread().interrupt();
382	>	for (int i = 0; i < SIZE; ++i) {
383	>	long t0 = System.nanoTime();
384	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
385	>	assertTrue(millisElapsedSince(t0) < SHORT_DELAY_MS);
386	>	}
387	>	try {
388	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
389	>	shouldThrow();
390	>	} catch (InterruptedException success) {}
391		}});
392	<	t.start();
393	<	Thread.sleep(SMALL_DELAY_MS);
394	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
348	<	t.interrupt();
349	<	t.join();
392	>
393	>	awaitTermination(t, MEDIUM_DELAY_MS);
394	>	checkEmpty(q);
395		}
396
397		/**
398		* peek returns next element, or null if empty
399		*/
400	<	public void testPeek() {
400	>	public void testPeek() throws InterruptedException {
401		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
402		for (int i = 0; i < SIZE; ++i) {
403		assertEquals(i, (int) q.peek());
#	Line 361 | Line 406 | public class LinkedTransferQueueTest ext
406		i != (int) q.peek());
407		}
408		assertNull(q.peek());
409	+	checkEmpty(q);
410		}
411
412		/**
413		* element returns next element, or throws NoSuchElementException if empty
414		*/
415	<	public void testElement() {
415	>	public void testElement() throws InterruptedException {
416		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
417		for (int i = 0; i < SIZE; ++i) {
418		assertEquals(i, (int) q.element());
#	Line 375 | Line 421 | public class LinkedTransferQueueTest ext
421		try {
422		q.element();
423		shouldThrow();
424	<	} catch (NoSuchElementException success) {
425	<	}
424	>	} catch (NoSuchElementException success) {}
425	>	checkEmpty(q);
426		}
427
428		/**
429		* remove removes next element, or throws NoSuchElementException if empty
430		*/
431	<	public void testRemove() {
431	>	public void testRemove() throws InterruptedException {
432		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
433		for (int i = 0; i < SIZE; ++i) {
434		assertEquals(i, (int) q.remove());
#	Line 390 | Line 436 | public class LinkedTransferQueueTest ext
436		try {
437		q.remove();
438		shouldThrow();
439	<	} catch (NoSuchElementException success) {
440	<	}
439	>	} catch (NoSuchElementException success) {}
440	>	checkEmpty(q);
441		}
442
443		/**
444		* remove(x) removes x and returns true if present
445		*/
446	<	public void testRemoveElement() {
446	>	public void testRemoveElement() throws InterruptedException {
447		LinkedTransferQueue q = populatedQueue(SIZE);
448		for (int i = 1; i < SIZE; i += 2) {
449		assertTrue(q.remove(i));
#	Line 406 | Line 452 | public class LinkedTransferQueueTest ext
452		assertTrue(q.remove(i));
453		assertFalse(q.remove(i + 1));
454		}
455	<	assertTrue(q.isEmpty());
455	>	checkEmpty(q);
456		}
457
458		/**
#	Line 419 | Line 465 | public class LinkedTransferQueueTest ext
465		assertTrue(q.remove(one));
466		assertTrue(q.remove(two));
467		assertTrue(q.add(three));
468	<	assertTrue(q.take() != null);
468	>	assertSame(q.take(), three);
469		}
470
471		/**
#	Line 437 | Line 483 | public class LinkedTransferQueueTest ext
483		/**
484		* clear removes all elements
485		*/
486	<	public void testClear() {
486	>	public void testClear() throws InterruptedException {
487		LinkedTransferQueue q = populatedQueue(SIZE);
488		q.clear();
489	<	assertTrue(q.isEmpty());
444	<	assertEquals(0, q.size());
489	>	checkEmpty(q);
490		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
491		q.add(one);
492		assertFalse(q.isEmpty());
493	+	assertEquals(1, q.size());
494		assertTrue(q.contains(one));
495		q.clear();
496	<	assertTrue(q.isEmpty());
496	>	checkEmpty(q);
497		}
498
499		/**
#	Line 501 | Line 547 | public class LinkedTransferQueueTest ext
547		}
548
549		/**
550	<	* toArray contains all elements
550	>	* toArray() contains all elements
551		*/
552		public void testToArray() throws InterruptedException {
553		LinkedTransferQueue q = populatedQueue(SIZE);
#	Line 527 | Line 573 | public class LinkedTransferQueueTest ext
573		* toArray(null) throws NullPointerException
574		*/
575		public void testToArray_BadArg() {
576	+	LinkedTransferQueue q = populatedQueue(SIZE);
577		try {
531	–	LinkedTransferQueue q = populatedQueue(SIZE);
578		Object o[] = q.toArray(null);
579		shouldThrow();
580	<	} catch (NullPointerException success) {
535	<	}
580	>	} catch (NullPointerException success) {}
581		}
582
583		/**
584	<	* toArray with incompatible array type throws CCE
584	>	* toArray(incompatible array type) throws CCE
585		*/
586		public void testToArray1_BadArg() {
587	+	LinkedTransferQueue q = populatedQueue(SIZE);
588		try {
543	–	LinkedTransferQueue q = populatedQueue(SIZE);
589		Object o[] = q.toArray(new String[10]);
590		shouldThrow();
591	<	} catch (ArrayStoreException success) {
547	<	}
591	>	} catch (ArrayStoreException success) {}
592		}
593
594		/**
#	Line 553 | Line 597 | public class LinkedTransferQueueTest ext
597		public void testIterator() throws InterruptedException {
598		LinkedTransferQueue q = populatedQueue(SIZE);
599		Iterator it = q.iterator();
600	+	int i = 0;
601		while (it.hasNext()) {
602	<	assertEquals(it.next(), q.take());
602	>	assertEquals(it.next(), i++);
603		}
604	+	assertEquals(i, SIZE);
605		}
606
607		/**
608	<	* iterator.remove removes current element
608	>	* iterator.remove() removes current element
609		*/
610		public void testIteratorRemove() {
611		final LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 572 | Line 618 | public class LinkedTransferQueueTest ext
618		it.remove();
619
620		it = q.iterator();
621	<	assertEquals(it.next(), one);
622	<	assertEquals(it.next(), three);
621	>	assertSame(it.next(), one);
622	>	assertSame(it.next(), three);
623		assertFalse(it.hasNext());
624		}
625
#	Line 626 | Line 672 | public class LinkedTransferQueueTest ext
672		*/
673		public void testOfferInExecutor() {
674		final LinkedTransferQueue q = new LinkedTransferQueue();
675	<	q.add(one);
630	<	q.add(two);
675	>	final CountDownLatch threadsStarted = new CountDownLatch(2);
676		ExecutorService executor = Executors.newFixedThreadPool(2);
677
678		executor.execute(new CheckedRunnable() {
679	<	void realRun() {
680	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS,
681	<	MILLISECONDS));
679	>	public void realRun() throws InterruptedException {
680	>	threadsStarted.countDown();
681	>	threadsStarted.await();
682	>	assertTrue(q.offer(one, MEDIUM_DELAY_MS, MILLISECONDS));
683		}});
684
685		executor.execute(new CheckedRunnable() {
686	<	void realRun() throws InterruptedException {
687	<	Thread.sleep(SMALL_DELAY_MS);
688	<	threadAssertEquals(one, q.take());
686	>	public void realRun() throws InterruptedException {
687	>	threadsStarted.countDown();
688	>	threadsStarted.await();
689	>	assertSame(one, q.take());
690	>	checkEmpty(q);
691		}});
692
693		joinPool(executor);
694		}
695
696		/**
697	<	* poll retrieves elements across Executor threads
697	>	* timed poll retrieves elements across Executor threads
698		*/
699		public void testPollInExecutor() {
700		final LinkedTransferQueue q = new LinkedTransferQueue();
701	+	final CountDownLatch threadsStarted = new CountDownLatch(2);
702		ExecutorService executor = Executors.newFixedThreadPool(2);
703
704		executor.execute(new CheckedRunnable() {
705	<	void realRun() throws InterruptedException {
706	<	threadAssertNull(q.poll());
707	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS,
708	<	MILLISECONDS));
709	<	threadAssertTrue(q.isEmpty());
705	>	public void realRun() throws InterruptedException {
706	>	assertNull(q.poll());
707	>	threadsStarted.countDown();
708	>	threadsStarted.await();
709	>	assertSame(one, q.poll(SMALL_DELAY_MS, MILLISECONDS));
710	>	checkEmpty(q);
711		}});
712
713		executor.execute(new CheckedRunnable() {
714	<	void realRun() throws InterruptedException {
715	<	Thread.sleep(SMALL_DELAY_MS);
714	>	public void realRun() throws InterruptedException {
715	>	threadsStarted.countDown();
716	>	threadsStarted.await();
717		q.put(one);
718		}});
719
#	Line 701 | Line 752 | public class LinkedTransferQueueTest ext
752		try {
753		q.drainTo(null);
754		shouldThrow();
755	<	} catch (NullPointerException success) {
705	<	}
755	>	} catch (NullPointerException success) {}
756		}
757
758		/**
#	Line 713 | Line 763 | public class LinkedTransferQueueTest ext
763		try {
764		q.drainTo(q);
765		shouldThrow();
766	<	} catch (IllegalArgumentException success) {
717	<	}
766	>	} catch (IllegalArgumentException success) {}
767		}
768
769		/**
#	Line 744 | Line 793 | public class LinkedTransferQueueTest ext
793		}
794
795		/**
796	<	* drainTo empties full queue, unblocking a waiting put.
796	>	* drainTo(c) empties full queue, unblocking a waiting put.
797		*/
798		public void testDrainToWithActivePut() throws InterruptedException {
799		final LinkedTransferQueue q = populatedQueue(SIZE);
800	<	Thread t = new Thread(new CheckedRunnable() {
801	<	void realRun() {
800	>	Thread t = newStartedThread(new CheckedRunnable() {
801	>	public void realRun() {
802		q.put(SIZE + 1);
803		}});
755	–	t.start();
804		ArrayList l = new ArrayList();
805		q.drainTo(l);
806		assertTrue(l.size() >= SIZE);
807		for (int i = 0; i < SIZE; ++i) {
808		assertEquals(l.get(i), i);
809		}
810	<	t.join();
810	>	awaitTermination(t, MEDIUM_DELAY_MS);
811		assertTrue(q.size() + l.size() >= SIZE);
812		}
813
#	Line 769 | Line 817 | public class LinkedTransferQueueTest ext
817		public void testDrainToNullN() {
818		LinkedTransferQueue q = populatedQueue(SIZE);
819		try {
820	<	q.drainTo(null, 0);
820	>	q.drainTo(null, SIZE);
821		shouldThrow();
822	<	} catch (NullPointerException success) {
775	<	}
822	>	} catch (NullPointerException success) {}
823		}
824
825		/**
#	Line 781 | Line 828 | public class LinkedTransferQueueTest ext
828		public void testDrainToSelfN() {
829		LinkedTransferQueue q = populatedQueue(SIZE);
830		try {
831	<	q.drainTo(q, 0);
831	>	q.drainTo(q, SIZE);
832		shouldThrow();
833	<	} catch (IllegalArgumentException success) {
787	<	}
833	>	} catch (IllegalArgumentException success) {}
834		}
835
836		/**
837	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
837	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
838		*/
839		public void testDrainToN() {
840		LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 810 | Line 856 | public class LinkedTransferQueueTest ext
856		}
857
858		/**
859	<	* poll and take decrement the waiting consumer count
859	>	* timed poll() or take() increments the waiting consumer count;
860	>	* offer(e) decrements the waiting consumer count
861		*/
862		public void testWaitingConsumer() throws InterruptedException {
863		final LinkedTransferQueue q = new LinkedTransferQueue();
864	<	final ConsumerObserver waiting = new ConsumerObserver();
865	<	new Thread(new CheckedRunnable() {
866	<	void realRun() {
867	<	threadAssertTrue(q.hasWaitingConsumer());
868	<	waiting.setWaitingConsumer(q.getWaitingConsumerCount());
869	<	threadAssertTrue(q.offer(new Object()));
870	<	}}).start();
871	<	assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) != null);
872	<	assertTrue(q.getWaitingConsumerCount()
873	<	< waiting.getWaitingConsumers());
864	>	assertEquals(q.getWaitingConsumerCount(), 0);
865	>	assertFalse(q.hasWaitingConsumer());
866	>	final CountDownLatch threadStarted = new CountDownLatch(1);
867	>
868	>	Thread t = newStartedThread(new CheckedRunnable() {
869	>	public void realRun() throws InterruptedException {
870	>	threadStarted.countDown();
871	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
872	>	assertEquals(q.getWaitingConsumerCount(), 0);
873	>	assertFalse(q.hasWaitingConsumer());
874	>	}});
875	>
876	>	threadStarted.await();
877	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
878	>	assertEquals(q.getWaitingConsumerCount(), 1);
879	>	assertTrue(q.hasWaitingConsumer());
880	>
881	>	assertTrue(q.offer(one));
882	>	assertEquals(q.getWaitingConsumerCount(), 0);
883	>	assertFalse(q.hasWaitingConsumer());
884	>
885	>	awaitTermination(t, MEDIUM_DELAY_MS);
886		}
887
888		/**
#	Line 834 | Line 893 | public class LinkedTransferQueueTest ext
893		LinkedTransferQueue q = new LinkedTransferQueue();
894		q.transfer(null);
895		shouldThrow();
896	<	} catch (NullPointerException ex) {
838	<	}
896	>	} catch (NullPointerException success) {}
897		}
898
899		/**
#	Line 845 | Line 903 | public class LinkedTransferQueueTest ext
903		public void testTransfer2() throws InterruptedException {
904		final LinkedTransferQueue<Integer> q
905		= new LinkedTransferQueue<Integer>();
906	+	final CountDownLatch threadStarted = new CountDownLatch(1);
907
908	<	new Thread(new CheckedRunnable() {
909	<	void realRun() throws InterruptedException {
908	>	Thread t = newStartedThread(new CheckedRunnable() {
909	>	public void realRun() throws InterruptedException {
910	>	threadStarted.countDown();
911		q.transfer(SIZE);
912	<	threadAssertTrue(q.isEmpty());
913	<	}}).start();
912	>	checkEmpty(q);
913	>	}});
914
915	<	Thread.sleep(SHORT_DELAY_MS);
915	>	threadStarted.await();
916	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
917	>	assertTrue(t.isAlive());
918		assertEquals(1, q.size());
919		assertEquals(SIZE, (int) q.poll());
920	<	assertTrue(q.isEmpty());
920	>	checkEmpty(q);
921	>	awaitTermination(t, MEDIUM_DELAY_MS);
922		}
923
924		/**
#	Line 865 | Line 928 | public class LinkedTransferQueueTest ext
928		final LinkedTransferQueue<Integer> q
929		= new LinkedTransferQueue<Integer>();
930
931	<	Thread first = new Thread(new CheckedRunnable() {
932	<	void realRun() throws InterruptedException {
931	>	Thread first = newStartedThread(new CheckedRunnable() {
932	>	public void realRun() throws InterruptedException {
933		Integer i = SIZE + 1;
934		q.transfer(i);
935	<	threadAssertTrue(!q.contains(i));
936	<	threadAssertEquals(1, q.size());
935	>	assertTrue(!q.contains(i));
936	>	assertEquals(1, q.size());
937		}});
875	–	first.start();
938
939	<	Thread interruptedThread = new Thread(new CheckedInterruptedRunnable() {
940	<	void realRun() throws InterruptedException {
941	<	while (q.size() == 0)
942	<	Thread.yield();
943	<	q.transfer(SIZE);
944	<	}});
945	<	interruptedThread.start();
939	>	Thread interruptedThread = newStartedThread(
940	>	new CheckedInterruptedRunnable() {
941	>	public void realRun() throws InterruptedException {
942	>	while (q.size() == 0)
943	>	Thread.yield();
944	>	q.transfer(SIZE);
945	>	}});
946
947		while (q.size() < 2)
948		Thread.yield();
#	Line 890 | Line 952 | public class LinkedTransferQueueTest ext
952		assertEquals(1, q.size());
953		interruptedThread.interrupt();
954		interruptedThread.join();
955	<	assertEquals(0, q.size());
894	<	assertTrue(q.isEmpty());
955	>	checkEmpty(q);
956		}
957
958		/**
#	Line 900 | Line 961 | public class LinkedTransferQueueTest ext
961		*/
962		public void testTransfer4() throws InterruptedException {
963		final LinkedTransferQueue q = new LinkedTransferQueue();
964	<	new Thread(new CheckedRunnable() {
965	<	void realRun() throws InterruptedException {
964	>
965	>	Thread t = newStartedThread(new CheckedRunnable() {
966	>	public void realRun() throws InterruptedException {
967		q.transfer(four);
968	<	threadAssertFalse(q.contains(four));
969	<	threadAssertEquals(three, q.poll());
970	<	}}).start();
971	<	Thread.sleep(MEDIUM_DELAY_MS);
968	>	assertFalse(q.contains(four));
969	>	assertSame(three, q.poll());
970	>	}});
971	>
972	>	while (q.isEmpty())
973	>	Thread.yield();
974	>	assertFalse(q.isEmpty());
975	>	assertEquals(1, q.size());
976		assertTrue(q.offer(three));
977	<	assertEquals(four, q.poll());
977	>	assertSame(four, q.poll());
978	>	awaitTermination(t, MEDIUM_DELAY_MS);
979		}
980
981		/**
#	Line 919 | Line 986 | public class LinkedTransferQueueTest ext
986		final LinkedTransferQueue<Integer> q
987		= new LinkedTransferQueue<Integer>();
988
989	<	new Thread(new CheckedRunnable() {
990	<	void realRun() throws InterruptedException {
991	<	q.transfer(SIZE);
992	<	threadAssertTrue(q.isEmpty());
993	<	}}).start();
989	>	Thread t = newStartedThread(new CheckedRunnable() {
990	>	public void realRun() throws InterruptedException {
991	>	q.transfer(four);
992	>	checkEmpty(q);
993	>	}});
994
995	<	Thread.sleep(SHORT_DELAY_MS);
996	<	assertEquals(SIZE, (int) q.take());
997	<	assertTrue(q.isEmpty());
995	>	while (q.isEmpty())
996	>	Thread.yield();
997	>	assertFalse(q.isEmpty());
998	>	assertEquals(1, q.size());
999	>	assertSame(four, q.take());
1000	>	checkEmpty(q);
1001	>	awaitTermination(t, MEDIUM_DELAY_MS);
1002		}
1003
1004		/**
#	Line 938 | Line 1009 | public class LinkedTransferQueueTest ext
1009		final LinkedTransferQueue q = new LinkedTransferQueue();
1010		q.tryTransfer(null);
1011		shouldThrow();
1012	<	} catch (NullPointerException ex) {
942	<	}
1012	>	} catch (NullPointerException success) {}
1013		}
1014
1015		/**
1016		* tryTransfer returns false and does not enqueue if there are no
1017		* consumers waiting to poll or take.
1018		*/
1019	<	public void testTryTransfer2() {
1019	>	public void testTryTransfer2() throws InterruptedException {
1020		final LinkedTransferQueue q = new LinkedTransferQueue();
1021		assertFalse(q.tryTransfer(new Object()));
1022		assertFalse(q.hasWaitingConsumer());
1023	<	assertTrue(q.isEmpty());
954	<	assertEquals(0, q.size());
1023	>	checkEmpty(q);
1024		}
1025
1026		/**
#	Line 961 | Line 1030 | public class LinkedTransferQueueTest ext
1030		public void testTryTransfer3() throws InterruptedException {
1031		final Object hotPotato = new Object();
1032		final LinkedTransferQueue q = new LinkedTransferQueue();
1033	<	new Thread(new CheckedRunnable() {
1034	<	void realRun() {
1033	>
1034	>	Thread t = newStartedThread(new CheckedRunnable() {
1035	>	public void realRun() {
1036		while (! q.hasWaitingConsumer())
1037		Thread.yield();
1038	<	threadAssertTrue(q.hasWaitingConsumer());
1039	<	threadAssertTrue(q.isEmpty());
1040	<	threadAssertTrue(q.size() == 0);
1041	<	threadAssertTrue(q.tryTransfer(hotPotato));
1042	<	}}).start();
1043	<	assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) == hotPotato);
1044	<	assertTrue(q.isEmpty());
1038	>	assertTrue(q.hasWaitingConsumer());
1039	>	checkEmpty(q);
1040	>	assertTrue(q.tryTransfer(hotPotato));
1041	>	}});
1042	>
1043	>	assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
1044	>	checkEmpty(q);
1045	>	awaitTermination(t, MEDIUM_DELAY_MS);
1046		}
1047
1048		/**
#	Line 981 | Line 1052 | public class LinkedTransferQueueTest ext
1052		public void testTryTransfer4() throws InterruptedException {
1053		final Object hotPotato = new Object();
1054		final LinkedTransferQueue q = new LinkedTransferQueue();
1055	<	new Thread(new CheckedRunnable() {
1056	<	void realRun() {
1055	>
1056	>	Thread t = newStartedThread(new CheckedRunnable() {
1057	>	public void realRun() {
1058		while (! q.hasWaitingConsumer())
1059		Thread.yield();
1060	<	threadAssertTrue(q.hasWaitingConsumer());
1061	<	threadAssertTrue(q.isEmpty());
1062	<	threadAssertTrue(q.size() == 0);
1063	<	threadAssertTrue(q.tryTransfer(hotPotato));
1064	<	}}).start();
1065	<	assertTrue(q.take() == hotPotato);
1066	<	assertTrue(q.isEmpty());
1060	>	assertTrue(q.hasWaitingConsumer());
1061	>	checkEmpty(q);
1062	>	assertTrue(q.tryTransfer(hotPotato));
1063	>	}});
1064	>
1065	>	assertSame(q.take(), hotPotato);
1066	>	checkEmpty(q);
1067	>	awaitTermination(t, MEDIUM_DELAY_MS);
1068		}
1069
1070		/**
#	Line 1000 | Line 1073 | public class LinkedTransferQueueTest ext
1073		*/
1074		public void testTryTransfer5() throws InterruptedException {
1075		final LinkedTransferQueue q = new LinkedTransferQueue();
1076	<	Thread toInterrupt = new Thread(new CheckedInterruptedRunnable() {
1077	<	void realRun() throws InterruptedException {
1078	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
1076	>	final CountDownLatch threadStarted = new CountDownLatch(1);
1077	>
1078	>	Thread t = newStartedThread(new CheckedRunnable() {
1079	>	public void realRun() throws InterruptedException {
1080	>	long t0 = System.nanoTime();
1081	>	threadStarted.countDown();
1082	>	try {
1083	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
1084	>	shouldThrow();
1085	>	} catch (InterruptedException success) {}
1086	>	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
1087		}});
1088	<	toInterrupt.start();
1089	<	Thread.sleep(SMALL_DELAY_MS);
1090	<	toInterrupt.interrupt();
1088	>
1089	>	threadStarted.await();
1090	>	Thread.sleep(SHORT_DELAY_MS);
1091	>	t.interrupt();
1092	>	awaitTermination(t, MEDIUM_DELAY_MS);
1093	>	checkEmpty(q);
1094		}
1095
1096		/**
#	Line 1014 | Line 1098 | public class LinkedTransferQueueTest ext
1098		*/
1099		public void testTryTransfer6() throws InterruptedException {
1100		final LinkedTransferQueue q = new LinkedTransferQueue();
1101	<	new Thread(new CheckedRunnable() {
1102	<	void realRun() throws InterruptedException {
1103	<	threadAssertFalse
1104	<	(q.tryTransfer(new Object(),
1105	<	SHORT_DELAY_MS, MILLISECONDS));
1106	<	}}).start();
1107	<	Thread.sleep(LONG_DELAY_MS);
1108	<	assertTrue(q.isEmpty());
1101	>
1102	>	Thread t = newStartedThread(new CheckedRunnable() {
1103	>	public void realRun() throws InterruptedException {
1104	>	long t0 = System.nanoTime();
1105	>	assertFalse(q.tryTransfer(new Object(),
1106	>	SHORT_DELAY_MS, MILLISECONDS));
1107	>	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
1108	>	}});
1109	>
1110	>	checkEmpty(q);
1111	>	awaitTermination(t, MEDIUM_DELAY_MS);
1112	>	checkEmpty(q);
1113		}
1114
1115		/**
#	Line 1031 | Line 1119 | public class LinkedTransferQueueTest ext
1119		public void testTryTransfer7() throws InterruptedException {
1120		final LinkedTransferQueue q = new LinkedTransferQueue();
1121		assertTrue(q.offer(four));
1122	<	new Thread(new CheckedRunnable() {
1123	<	void realRun() throws InterruptedException {
1124	<	threadAssertTrue(q.tryTransfer(five,
1125	<	LONG_DELAY_MS, MILLISECONDS));
1126	<	threadAssertTrue(q.isEmpty());
1127	<	}}).start();
1122	>
1123	>	Thread t = newStartedThread(new CheckedRunnable() {
1124	>	public void realRun() throws InterruptedException {
1125	>	assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
1126	>	checkEmpty(q);
1127	>	}});
1128	>
1129		Thread.sleep(SHORT_DELAY_MS);
1130		assertEquals(2, q.size());
1131	<	assertEquals(four, q.poll());
1132	<	assertEquals(five, q.poll());
1133	<	assertTrue(q.isEmpty());
1131	>	assertSame(four, q.poll());
1132	>	assertSame(five, q.poll());
1133	>	checkEmpty(q);
1134	>	awaitTermination(t, MEDIUM_DELAY_MS);
1135		}
1136
1137		/**
#	Line 1054 | Line 1144 | public class LinkedTransferQueueTest ext
1144		assertEquals(1, q.size());
1145		assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1146		assertEquals(1, q.size());
1147	<	assertEquals(four, q.poll());
1058	<	threadAssertTrue(q.isEmpty());
1147	>	assertSame(four, q.poll());
1148		assertNull(q.poll());
1149	+	checkEmpty(q);
1150		}
1151
1152		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1153		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1154	<	assertTrue(q.isEmpty());
1154	>	checkEmpty(q);
1155		for (int i = 0; i < n; i++) {
1156		assertEquals(i, q.size());
1157		assertTrue(q.offer(i));
#	Line 1070 | Line 1160 | public class LinkedTransferQueueTest ext
1160		assertFalse(q.isEmpty());
1161		return q;
1162		}
1073	–
1074	–	private static class ConsumerObserver {
1075	–
1076	–	private int waitingConsumers;
1077	–
1078	–	private ConsumerObserver() {
1079	–	}
1080	–
1081	–	private void setWaitingConsumer(int i) {
1082	–	this.waitingConsumers = i;
1083	–	}
1084	–
1085	–	private int getWaitingConsumers() {
1086	–	return waitingConsumers;
1087	–	}
1088	–	}
1163		}

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