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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.9 by jsr166, Wed Aug 5 00:43:23 2009 UTC vs.
Revision 1.43 by jsr166, Sun Nov 28 08:43:53 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		/**
#	Line 48 | Line 57 | public class LinkedTransferQueueTest ext
57		try {
58		new LinkedTransferQueue(null);
59		shouldThrow();
60	<	} catch (NullPointerException success) {
52	<	}
60	>	} catch (NullPointerException success) {}
61		}
62
63		/**
#	Line 61 | Line 69 | public class LinkedTransferQueueTest ext
69		Integer[] ints = new Integer[SIZE];
70		new LinkedTransferQueue(Arrays.asList(ints));
71		shouldThrow();
72	<	} catch (NullPointerException success) {
65	<	}
72	>	} catch (NullPointerException success) {}
73		}
74
75		/**
#	Line 77 | Line 84 | public class LinkedTransferQueueTest ext
84		}
85		new LinkedTransferQueue(Arrays.asList(ints));
86		shouldThrow();
87	<	} catch (NullPointerException success) {
81	<	}
87	>	} catch (NullPointerException success) {}
88		}
89
90		/**
91		* Queue contains all elements of the collection it is initialized by
92		*/
93		public void testConstructor5() {
94	<	try {
95	<	Integer[] ints = new Integer[SIZE];
96	<	for (int i = 0; i < SIZE; ++i) {
97	<	ints[i] = i;
98	<	}
99	<	LinkedTransferQueue q
100	<	= new LinkedTransferQueue(Arrays.asList(ints));
101	<	for (int i = 0; i < SIZE; ++i) {
102	<	assertEquals(ints[i], q.poll());
103	<	}
104	<	} finally {
94	>	Integer[] ints = new Integer[SIZE];
95	>	for (int i = 0; i < SIZE; ++i) {
96	>	ints[i] = i;
97	>	}
98	>	List intList = Arrays.asList(ints);
99	>	LinkedTransferQueue q
100	>	= new LinkedTransferQueue(intList);
101	>	assertEquals(q.size(), intList.size());
102	>	assertEquals(q.toString(), intList.toString());
103	>	assertTrue(Arrays.equals(q.toArray(),
104	>	intList.toArray()));
105	>	assertTrue(Arrays.equals(q.toArray(new Object[0]),
106	>	intList.toArray(new Object[0])));
107	>	assertTrue(Arrays.equals(q.toArray(new Object[SIZE]),
108	>	intList.toArray(new Object[SIZE])));
109	>	for (int i = 0; i < SIZE; ++i) {
110	>	assertEquals(ints[i], q.poll());
111		}
112		}
113
114		/**
115	<	* Remaining capacity never decrease nor increase on add or remove
115	>	* remainingCapacity() always returns Integer.MAX_VALUE
116		*/
117		public void testRemainingCapacity() {
118		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
#	Line 124 | Line 136 | public class LinkedTransferQueueTest ext
136		LinkedTransferQueue q = new LinkedTransferQueue();
137		q.offer(null);
138		shouldThrow();
139	<	} catch (NullPointerException success) {
128	<	}
139	>	} catch (NullPointerException success) {}
140		}
141
142		/**
#	Line 136 | Line 147 | public class LinkedTransferQueueTest ext
147		LinkedTransferQueue q = new LinkedTransferQueue();
148		q.add(null);
149		shouldThrow();
150	<	} catch (NullPointerException success) {
140	<	}
150	>	} catch (NullPointerException success) {}
151		}
152
153		/**
#	Line 148 | Line 158 | public class LinkedTransferQueueTest ext
158		LinkedTransferQueue q = new LinkedTransferQueue();
159		q.addAll(null);
160		shouldThrow();
161	<	} catch (NullPointerException success) {
152	<	}
161	>	} catch (NullPointerException success) {}
162		}
163
164		/**
#	Line 160 | Line 169 | public class LinkedTransferQueueTest ext
169		LinkedTransferQueue q = populatedQueue(SIZE);
170		q.addAll(q);
171		shouldThrow();
172	<	} catch (IllegalArgumentException success) {
164	<	}
172	>	} catch (IllegalArgumentException success) {}
173		}
174
175		/**
#	Line 173 | Line 181 | public class LinkedTransferQueueTest ext
181		Integer[] ints = new Integer[SIZE];
182		q.addAll(Arrays.asList(ints));
183		shouldThrow();
184	<	} catch (NullPointerException success) {
177	<	}
184	>	} catch (NullPointerException success) {}
185		}
186
187		/**
#	Line 190 | Line 197 | public class LinkedTransferQueueTest ext
197		}
198		q.addAll(Arrays.asList(ints));
199		shouldThrow();
200	<	} catch (NullPointerException success) {
194	<	}
200	>	} catch (NullPointerException success) {}
201		}
202
203		/**
#	Line 228 | Line 234 | public class LinkedTransferQueueTest ext
234		public void testPut() {
235		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
236		for (int i = 0; i < SIZE; ++i) {
237	+	assertEquals(q.size(), i);
238		q.put(i);
239		assertTrue(q.contains(i));
240		}
234	–	assertEquals(q.size(), SIZE);
241		}
242
243		/**
#	Line 245 | Line 251 | public class LinkedTransferQueueTest ext
251		}
252
253		/**
254	<	* take blocks interruptibly when empty
249	<	*/
250	<	public void testTakeFromEmpty() throws InterruptedException {
251	<	final LinkedTransferQueue q = new LinkedTransferQueue();
252	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
253	<	void realRun() throws InterruptedException {
254	<	q.take();
255	<	}});
256	<	Thread.sleep(SHORT_DELAY_MS);
257	<	t.interrupt();
258	<	t.join();
259	<	}
260	<
261	<	/**
262	<	* Take removes existing elements until empty, then blocks interruptibly
254	>	* take removes existing elements until empty, then blocks interruptibly
255		*/
256		public void testBlockingTake() throws InterruptedException {
257	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
258	<	void realRun() throws InterruptedException {
259	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
257	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
258	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
259	>	Thread t = newStartedThread(new CheckedRunnable() {
260	>	public void realRun() throws InterruptedException {
261		for (int i = 0; i < SIZE; ++i) {
262	<	threadAssertEquals(i, (int) q.take());
262	>	assertEquals(i, (int) q.take());
263		}
264	<	q.take();
264	>	aboutToWait.countDown();
265	>	try {
266	>	q.take();
267	>	shouldThrow();
268	>	} catch (InterruptedException success) {}
269		}});
270	<	Thread.sleep(SHORT_DELAY_MS);
270	>
271	>	aboutToWait.await();
272	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
273		t.interrupt();
274	<	t.join();
274	>	awaitTermination(t, MEDIUM_DELAY_MS);
275	>	checkEmpty(q);
276		}
277
278		/**
279		* poll succeeds unless empty
280		*/
281	<	public void testPoll() {
281	>	public void testPoll() throws InterruptedException {
282		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
283		for (int i = 0; i < SIZE; ++i) {
284		assertEquals(i, (int) q.poll());
285		}
286		assertNull(q.poll());
287	+	checkEmpty(q);
288		}
289
290		/**
291	<	* timed pool with zero timeout succeeds when non-empty, else times out
291	>	* timed poll with zero timeout succeeds when non-empty, else times out
292		*/
293		public void testTimedPoll0() throws InterruptedException {
294		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
#	Line 295 | Line 296 | public class LinkedTransferQueueTest ext
296		assertEquals(i, (int) q.poll(0, MILLISECONDS));
297		}
298		assertNull(q.poll(0, MILLISECONDS));
299	+	checkEmpty(q);
300		}
301
302		/**
303	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
303	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
304		*/
305		public void testTimedPoll() throws InterruptedException {
306		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
307		for (int i = 0; i < SIZE; ++i) {
308	<	assertEquals(i, (int) q.poll(SHORT_DELAY_MS, MILLISECONDS));
308	>	long t0 = System.nanoTime();
309	>	assertEquals(i, (int) q.poll(SMALL_DELAY_MS, MILLISECONDS));
310	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
311		}
312	+	long t0 = System.nanoTime();
313		assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
314	+	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
315	+	checkEmpty(q);
316		}
317
318		/**
#	Line 313 | Line 320 | public class LinkedTransferQueueTest ext
320		* returning timeout status
321		*/
322		public void testInterruptedTimedPoll() throws InterruptedException {
323	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
324	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
325	<	void realRun() throws InterruptedException {
323	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
324	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
325	>	Thread t = newStartedThread(new CheckedRunnable() {
326	>	public void realRun() throws InterruptedException {
327		for (int i = 0; i < SIZE; ++i) {
328	<	threadAssertEquals(i, (int) q.poll(LONG_DELAY_MS,
329	<	MILLISECONDS));
328	>	long t0 = System.nanoTime();
329	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
330	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
331	>	}
332	>	long t0 = System.nanoTime();
333	>	aboutToWait.countDown();
334	>	try {
335	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
336	>	shouldThrow();
337	>	} catch (InterruptedException success) {
338	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
339		}
323	–	q.poll(LONG_DELAY_MS, MILLISECONDS);
340		}});
341	<	Thread.sleep(SMALL_DELAY_MS);
341	>
342	>	aboutToWait.await();
343	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
344		t.interrupt();
345	<	t.join();
346	<	assertEquals(q.size(), 0);
329	<	assertNull(q.poll());
345	>	awaitTermination(t, MEDIUM_DELAY_MS);
346	>	checkEmpty(q);
347		}
348
349		/**
350	<	* timed poll before a delayed offer fails; after offer succeeds;
351	<	* on interruption throws
350	>	* timed poll after thread interrupted throws InterruptedException
351	>	* instead of returning timeout status
352		*/
353	<	public void testTimedPollWithOffer() throws InterruptedException {
354	<	final LinkedTransferQueue q = new LinkedTransferQueue();
355	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
356	<	void realRun() throws InterruptedException {
357	<	threadAssertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
358	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
359	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
353	>	public void testTimedPollAfterInterrupt() throws InterruptedException {
354	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
355	>	Thread t = newStartedThread(new CheckedRunnable() {
356	>	public void realRun() throws InterruptedException {
357	>	Thread.currentThread().interrupt();
358	>	for (int i = 0; i < SIZE; ++i) {
359	>	long t0 = System.nanoTime();
360	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
361	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
362	>	}
363	>	try {
364	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
365	>	shouldThrow();
366	>	} catch (InterruptedException success) {}
367		}});
368	<	Thread.sleep(SMALL_DELAY_MS);
369	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
370	<	t.interrupt();
347	<	t.join();
368	>
369	>	awaitTermination(t, MEDIUM_DELAY_MS);
370	>	checkEmpty(q);
371		}
372
373		/**
374		* peek returns next element, or null if empty
375		*/
376	<	public void testPeek() {
376	>	public void testPeek() throws InterruptedException {
377		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
378		for (int i = 0; i < SIZE; ++i) {
379		assertEquals(i, (int) q.peek());
#	Line 359 | Line 382 | public class LinkedTransferQueueTest ext
382		i != (int) q.peek());
383		}
384		assertNull(q.peek());
385	+	checkEmpty(q);
386		}
387
388		/**
389		* element returns next element, or throws NoSuchElementException if empty
390		*/
391	<	public void testElement() {
391	>	public void testElement() throws InterruptedException {
392		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
393		for (int i = 0; i < SIZE; ++i) {
394		assertEquals(i, (int) q.element());
#	Line 373 | Line 397 | public class LinkedTransferQueueTest ext
397		try {
398		q.element();
399		shouldThrow();
400	<	} catch (NoSuchElementException success) {
401	<	}
400	>	} catch (NoSuchElementException success) {}
401	>	checkEmpty(q);
402		}
403
404		/**
405		* remove removes next element, or throws NoSuchElementException if empty
406		*/
407	<	public void testRemove() {
407	>	public void testRemove() throws InterruptedException {
408		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
409		for (int i = 0; i < SIZE; ++i) {
410		assertEquals(i, (int) q.remove());
#	Line 388 | Line 412 | public class LinkedTransferQueueTest ext
412		try {
413		q.remove();
414		shouldThrow();
415	<	} catch (NoSuchElementException success) {
416	<	}
415	>	} catch (NoSuchElementException success) {}
416	>	checkEmpty(q);
417		}
418
419		/**
420		* remove(x) removes x and returns true if present
421		*/
422	<	public void testRemoveElement() {
422	>	public void testRemoveElement() throws InterruptedException {
423		LinkedTransferQueue q = populatedQueue(SIZE);
424	<	for (int i = 1; i < SIZE; i += 2) {
424	>	for (int i = 1; i < SIZE; i+=2) {
425	>	assertTrue(q.contains(i));
426		assertTrue(q.remove(i));
427	+	assertFalse(q.contains(i));
428	+	assertTrue(q.contains(i-1));
429		}
430	<	for (int i = 0; i < SIZE; i += 2) {
430	>	for (int i = 0; i < SIZE; i+=2) {
431	>	assertTrue(q.contains(i));
432		assertTrue(q.remove(i));
433	<	assertFalse(q.remove(i + 1));
433	>	assertFalse(q.contains(i));
434	>	assertFalse(q.remove(i+1));
435	>	assertFalse(q.contains(i+1));
436		}
437	<	assertTrue(q.isEmpty());
437	>	checkEmpty(q);
438		}
439
440		/**
#	Line 417 | Line 447 | public class LinkedTransferQueueTest ext
447		assertTrue(q.remove(one));
448		assertTrue(q.remove(two));
449		assertTrue(q.add(three));
450	<	assertTrue(q.take() != null);
450	>	assertSame(q.take(), three);
451		}
452
453		/**
#	Line 435 | Line 465 | public class LinkedTransferQueueTest ext
465		/**
466		* clear removes all elements
467		*/
468	<	public void testClear() {
468	>	public void testClear() throws InterruptedException {
469		LinkedTransferQueue q = populatedQueue(SIZE);
470		q.clear();
471	<	assertTrue(q.isEmpty());
442	<	assertEquals(0, q.size());
471	>	checkEmpty(q);
472		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
473		q.add(one);
474		assertFalse(q.isEmpty());
475	+	assertEquals(1, q.size());
476		assertTrue(q.contains(one));
477		q.clear();
478	<	assertTrue(q.isEmpty());
478	>	checkEmpty(q);
479		}
480
481		/**
#	Line 499 | Line 529 | public class LinkedTransferQueueTest ext
529		}
530
531		/**
532	<	* toArray contains all elements
532	>	* toArray() contains all elements in FIFO order
533		*/
534	<	public void testToArray() throws InterruptedException {
534	>	public void testToArray() {
535		LinkedTransferQueue q = populatedQueue(SIZE);
536		Object[] o = q.toArray();
537		for (int i = 0; i < o.length; i++) {
538	<	assertEquals(o[i], q.take());
538	>	assertSame(o[i], q.poll());
539		}
540		}
541
542		/**
543	<	* toArray(a) contains all elements
543	>	* toArray(a) contains all elements in FIFO order
544		*/
545	<	public void testToArray2() throws InterruptedException {
545	>	public void testToArray2() {
546		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
547		Integer[] ints = new Integer[SIZE];
548	<	ints = q.toArray(ints);
548	>	Integer[] array = q.toArray(ints);
549	>	assertSame(ints, array);
550		for (int i = 0; i < ints.length; i++) {
551	<	assertEquals(ints[i], q.take());
551	>	assertSame(ints[i], q.poll());
552		}
553		}
554
555		/**
556		* toArray(null) throws NullPointerException
557		*/
558	<	public void testToArray_BadArg() {
558	>	public void testToArray_NullArg() {
559	>	LinkedTransferQueue q = populatedQueue(SIZE);
560		try {
561	<	LinkedTransferQueue q = populatedQueue(SIZE);
530	<	Object o[] = q.toArray(null);
561	>	q.toArray(null);
562		shouldThrow();
563	<	} catch (NullPointerException success) {
533	<	}
563	>	} catch (NullPointerException success) {}
564		}
565
566		/**
567	<	* toArray with incompatible array type throws CCE
567	>	* toArray(incompatible array type) throws ArrayStoreException
568		*/
569		public void testToArray1_BadArg() {
570	+	LinkedTransferQueue q = populatedQueue(SIZE);
571		try {
572	<	LinkedTransferQueue q = populatedQueue(SIZE);
542	<	Object o[] = q.toArray(new String[10]);
572	>	q.toArray(new String[10]);
573		shouldThrow();
574	<	} catch (ArrayStoreException success) {
545	<	}
574	>	} catch (ArrayStoreException success) {}
575		}
576
577		/**
#	Line 551 | Line 580 | public class LinkedTransferQueueTest ext
580		public void testIterator() throws InterruptedException {
581		LinkedTransferQueue q = populatedQueue(SIZE);
582		Iterator it = q.iterator();
583	+	int i = 0;
584		while (it.hasNext()) {
585	<	assertEquals(it.next(), q.take());
585	>	assertEquals(it.next(), i++);
586		}
587	+	assertEquals(i, SIZE);
588		}
589
590		/**
591	<	* iterator.remove removes current element
591	>	* iterator.remove() removes current element
592		*/
593		public void testIteratorRemove() {
594		final LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 570 | Line 601 | public class LinkedTransferQueueTest ext
601		it.remove();
602
603		it = q.iterator();
604	<	assertEquals(it.next(), one);
605	<	assertEquals(it.next(), three);
604	>	assertSame(it.next(), one);
605	>	assertSame(it.next(), three);
606		assertFalse(it.hasNext());
607		}
608
#	Line 624 | Line 655 | public class LinkedTransferQueueTest ext
655		*/
656		public void testOfferInExecutor() {
657		final LinkedTransferQueue q = new LinkedTransferQueue();
658	<	q.add(one);
628	<	q.add(two);
658	>	final CountDownLatch threadsStarted = new CountDownLatch(2);
659		ExecutorService executor = Executors.newFixedThreadPool(2);
660
661		executor.execute(new CheckedRunnable() {
662	<	void realRun() {
663	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS,
664	<	MILLISECONDS));
662	>	public void realRun() throws InterruptedException {
663	>	threadsStarted.countDown();
664	>	threadsStarted.await();
665	>	assertTrue(q.offer(one, MEDIUM_DELAY_MS, MILLISECONDS));
666		}});
667
668		executor.execute(new CheckedRunnable() {
669	<	void realRun() throws InterruptedException {
670	<	Thread.sleep(SMALL_DELAY_MS);
671	<	threadAssertEquals(one, q.take());
669	>	public void realRun() throws InterruptedException {
670	>	threadsStarted.countDown();
671	>	threadsStarted.await();
672	>	assertSame(one, q.take());
673	>	checkEmpty(q);
674		}});
675
676		joinPool(executor);
677		}
678
679		/**
680	<	* poll retrieves elements across Executor threads
680	>	* timed poll retrieves elements across Executor threads
681		*/
682		public void testPollInExecutor() {
683		final LinkedTransferQueue q = new LinkedTransferQueue();
684	+	final CountDownLatch threadsStarted = new CountDownLatch(2);
685		ExecutorService executor = Executors.newFixedThreadPool(2);
686
687		executor.execute(new CheckedRunnable() {
688	<	void realRun() throws InterruptedException {
689	<	threadAssertNull(q.poll());
690	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS,
691	<	MILLISECONDS));
692	<	threadAssertTrue(q.isEmpty());
688	>	public void realRun() throws InterruptedException {
689	>	assertNull(q.poll());
690	>	threadsStarted.countDown();
691	>	threadsStarted.await();
692	>	assertSame(one, q.poll(SMALL_DELAY_MS, MILLISECONDS));
693	>	checkEmpty(q);
694		}});
695
696		executor.execute(new CheckedRunnable() {
697	<	void realRun() throws InterruptedException {
698	<	Thread.sleep(SMALL_DELAY_MS);
697	>	public void realRun() throws InterruptedException {
698	>	threadsStarted.countDown();
699	>	threadsStarted.await();
700		q.put(one);
701		}});
702
#	Line 686 | Line 722 | public class LinkedTransferQueueTest ext
722		LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
723
724		assertEquals(q.size(), r.size());
725	+	assertEquals(q.toString(), r.toString());
726	+	assertTrue(Arrays.equals(q.toArray(), r.toArray()));
727		while (!q.isEmpty()) {
728		assertEquals(q.remove(), r.remove());
729		}
#	Line 699 | Line 737 | public class LinkedTransferQueueTest ext
737		try {
738		q.drainTo(null);
739		shouldThrow();
740	<	} catch (NullPointerException success) {
703	<	}
740	>	} catch (NullPointerException success) {}
741		}
742
743		/**
#	Line 711 | Line 748 | public class LinkedTransferQueueTest ext
748		try {
749		q.drainTo(q);
750		shouldThrow();
751	<	} catch (IllegalArgumentException success) {
715	<	}
751	>	} catch (IllegalArgumentException success) {}
752		}
753
754		/**
#	Line 742 | Line 778 | public class LinkedTransferQueueTest ext
778		}
779
780		/**
781	<	* drainTo empties full queue, unblocking a waiting put.
781	>	* drainTo(c) empties full queue, unblocking a waiting put.
782		*/
783		public void testDrainToWithActivePut() throws InterruptedException {
784		final LinkedTransferQueue q = populatedQueue(SIZE);
785		Thread t = newStartedThread(new CheckedRunnable() {
786	<	void realRun() {
786	>	public void realRun() {
787		q.put(SIZE + 1);
788		}});
789		ArrayList l = new ArrayList();
#	Line 756 | Line 792 | public class LinkedTransferQueueTest ext
792		for (int i = 0; i < SIZE; ++i) {
793		assertEquals(l.get(i), i);
794		}
795	<	t.join();
795	>	awaitTermination(t, MEDIUM_DELAY_MS);
796		assertTrue(q.size() + l.size() >= SIZE);
797		}
798
#	Line 766 | Line 802 | public class LinkedTransferQueueTest ext
802		public void testDrainToNullN() {
803		LinkedTransferQueue q = populatedQueue(SIZE);
804		try {
805	<	q.drainTo(null, 0);
805	>	q.drainTo(null, SIZE);
806		shouldThrow();
807	<	} catch (NullPointerException success) {
772	<	}
807	>	} catch (NullPointerException success) {}
808		}
809
810		/**
#	Line 778 | Line 813 | public class LinkedTransferQueueTest ext
813		public void testDrainToSelfN() {
814		LinkedTransferQueue q = populatedQueue(SIZE);
815		try {
816	<	q.drainTo(q, 0);
816	>	q.drainTo(q, SIZE);
817		shouldThrow();
818	<	} catch (IllegalArgumentException success) {
784	<	}
818	>	} catch (IllegalArgumentException success) {}
819		}
820
821		/**
822	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
822	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
823		*/
824		public void testDrainToN() {
825		LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 807 | Line 841 | public class LinkedTransferQueueTest ext
841		}
842
843		/**
844	<	* poll and take decrement the waiting consumer count
844	>	* timed poll() or take() increments the waiting consumer count;
845	>	* offer(e) decrements the waiting consumer count
846		*/
847		public void testWaitingConsumer() throws InterruptedException {
848		final LinkedTransferQueue q = new LinkedTransferQueue();
849	<	final ConsumerObserver waiting = new ConsumerObserver();
849	>	assertEquals(q.getWaitingConsumerCount(), 0);
850	>	assertFalse(q.hasWaitingConsumer());
851	>	final CountDownLatch threadStarted = new CountDownLatch(1);
852
853		Thread t = newStartedThread(new CheckedRunnable() {
854	<	void realRun() throws InterruptedException {
855	<	Thread.sleep(SMALL_DELAY_MS);
856	<	threadAssertTrue(q.hasWaitingConsumer());
857	<	waiting.setWaitingConsumer(q.getWaitingConsumerCount());
858	<	threadAssertTrue(q.offer(new Object()));
854	>	public void realRun() throws InterruptedException {
855	>	threadStarted.countDown();
856	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
857	>	assertEquals(q.getWaitingConsumerCount(), 0);
858	>	assertFalse(q.hasWaitingConsumer());
859		}});
860
861	<	assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) != null);
862	<	assertTrue(q.getWaitingConsumerCount()
863	<	< waiting.getWaitingConsumers());
864	<	t.join();
861	>	threadStarted.await();
862	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
863	>	assertEquals(q.getWaitingConsumerCount(), 1);
864	>	assertTrue(q.hasWaitingConsumer());
865	>
866	>	assertTrue(q.offer(one));
867	>	assertEquals(q.getWaitingConsumerCount(), 0);
868	>	assertFalse(q.hasWaitingConsumer());
869	>
870	>	awaitTermination(t, MEDIUM_DELAY_MS);
871		}
872
873		/**
#	Line 835 | Line 878 | public class LinkedTransferQueueTest ext
878		LinkedTransferQueue q = new LinkedTransferQueue();
879		q.transfer(null);
880		shouldThrow();
881	<	} catch (NullPointerException ex) {
839	<	}
881	>	} catch (NullPointerException success) {}
882		}
883
884		/**
#	Line 846 | Line 888 | public class LinkedTransferQueueTest ext
888		public void testTransfer2() throws InterruptedException {
889		final LinkedTransferQueue<Integer> q
890		= new LinkedTransferQueue<Integer>();
891	+	final CountDownLatch threadStarted = new CountDownLatch(1);
892
893		Thread t = newStartedThread(new CheckedRunnable() {
894	<	void realRun() throws InterruptedException {
895	<	q.transfer(SIZE);
896	<	threadAssertTrue(q.isEmpty());
894	>	public void realRun() throws InterruptedException {
895	>	threadStarted.countDown();
896	>	q.transfer(five);
897	>	checkEmpty(q);
898		}});
899
900	<	Thread.sleep(SHORT_DELAY_MS);
900	>	threadStarted.await();
901	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
902		assertEquals(1, q.size());
903	<	assertEquals(SIZE, (int) q.poll());
904	<	assertTrue(q.isEmpty());
905	<	t.join();
903	>	assertSame(five, q.poll());
904	>	checkEmpty(q);
905	>	awaitTermination(t, MEDIUM_DELAY_MS);
906		}
907
908		/**
#	Line 868 | Line 913 | public class LinkedTransferQueueTest ext
913		= new LinkedTransferQueue<Integer>();
914
915		Thread first = newStartedThread(new CheckedRunnable() {
916	<	void realRun() throws InterruptedException {
917	<	Integer i = SIZE + 1;
918	<	q.transfer(i);
919	<	threadAssertTrue(!q.contains(i));
875	<	threadAssertEquals(1, q.size());
916	>	public void realRun() throws InterruptedException {
917	>	q.transfer(four);
918	>	assertTrue(!q.contains(four));
919	>	assertEquals(1, q.size());
920		}});
921
922		Thread interruptedThread = newStartedThread(
923		new CheckedInterruptedRunnable() {
924	<	void realRun() throws InterruptedException {
925	<	while (q.size() == 0)
924	>	public void realRun() throws InterruptedException {
925	>	while (q.isEmpty())
926		Thread.yield();
927	<	q.transfer(SIZE);
927	>	q.transfer(five);
928		}});
929
930		while (q.size() < 2)
931		Thread.yield();
932		assertEquals(2, q.size());
933	<	assertEquals(SIZE + 1, (int) q.poll());
933	>	assertSame(four, q.poll());
934		first.join();
935		assertEquals(1, q.size());
936		interruptedThread.interrupt();
937		interruptedThread.join();
938	<	assertEquals(0, q.size());
895	<	assertTrue(q.isEmpty());
938	>	checkEmpty(q);
939		}
940
941		/**
#	Line 903 | Line 946 | public class LinkedTransferQueueTest ext
946		final LinkedTransferQueue q = new LinkedTransferQueue();
947
948		Thread t = newStartedThread(new CheckedRunnable() {
949	<	void realRun() throws InterruptedException {
949	>	public void realRun() throws InterruptedException {
950		q.transfer(four);
951	<	threadAssertFalse(q.contains(four));
952	<	threadAssertEquals(three, q.poll());
951	>	assertFalse(q.contains(four));
952	>	assertSame(three, q.poll());
953		}});
954
955	<	Thread.sleep(SHORT_DELAY_MS);
955	>	while (q.isEmpty())
956	>	Thread.yield();
957	>	assertFalse(q.isEmpty());
958	>	assertEquals(1, q.size());
959		assertTrue(q.offer(three));
960	<	assertEquals(four, q.poll());
961	<	t.join();
960	>	assertSame(four, q.poll());
961	>	awaitTermination(t, MEDIUM_DELAY_MS);
962		}
963
964		/**
#	Line 924 | Line 970 | public class LinkedTransferQueueTest ext
970		= new LinkedTransferQueue<Integer>();
971
972		Thread t = newStartedThread(new CheckedRunnable() {
973	<	void realRun() throws InterruptedException {
974	<	q.transfer(SIZE);
975	<	threadAssertTrue(q.isEmpty());
973	>	public void realRun() throws InterruptedException {
974	>	q.transfer(four);
975	>	checkEmpty(q);
976		}});
977
978	<	Thread.sleep(SHORT_DELAY_MS);
979	<	assertEquals(SIZE, (int) q.take());
980	<	assertTrue(q.isEmpty());
981	<	t.join();
978	>	while (q.isEmpty())
979	>	Thread.yield();
980	>	assertFalse(q.isEmpty());
981	>	assertEquals(1, q.size());
982	>	assertSame(four, q.take());
983	>	checkEmpty(q);
984	>	awaitTermination(t, MEDIUM_DELAY_MS);
985		}
986
987		/**
#	Line 943 | Line 992 | public class LinkedTransferQueueTest ext
992		final LinkedTransferQueue q = new LinkedTransferQueue();
993		q.tryTransfer(null);
994		shouldThrow();
995	<	} catch (NullPointerException ex) {
947	<	}
995	>	} catch (NullPointerException success) {}
996		}
997
998		/**
999		* tryTransfer returns false and does not enqueue if there are no
1000		* consumers waiting to poll or take.
1001		*/
1002	<	public void testTryTransfer2() {
1002	>	public void testTryTransfer2() throws InterruptedException {
1003		final LinkedTransferQueue q = new LinkedTransferQueue();
1004		assertFalse(q.tryTransfer(new Object()));
1005		assertFalse(q.hasWaitingConsumer());
1006	<	assertTrue(q.isEmpty());
959	<	assertEquals(0, q.size());
1006	>	checkEmpty(q);
1007		}
1008
1009		/**
#	Line 968 | Line 1015 | public class LinkedTransferQueueTest ext
1015		final LinkedTransferQueue q = new LinkedTransferQueue();
1016
1017		Thread t = newStartedThread(new CheckedRunnable() {
1018	<	void realRun() {
1018	>	public void realRun() {
1019		while (! q.hasWaitingConsumer())
1020		Thread.yield();
1021	<	threadAssertTrue(q.hasWaitingConsumer());
1022	<	threadAssertTrue(q.isEmpty());
1023	<	threadAssertTrue(q.size() == 0);
977	<	threadAssertTrue(q.tryTransfer(hotPotato));
1021	>	assertTrue(q.hasWaitingConsumer());
1022	>	checkEmpty(q);
1023	>	assertTrue(q.tryTransfer(hotPotato));
1024		}});
1025
1026	<	assertTrue(q.poll(MEDIUM_DELAY_MS, MILLISECONDS) == hotPotato);
1027	<	assertTrue(q.isEmpty());
1028	<	t.join();
1026	>	assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
1027	>	checkEmpty(q);
1028	>	awaitTermination(t, MEDIUM_DELAY_MS);
1029		}
1030
1031		/**
#	Line 991 | Line 1037 | public class LinkedTransferQueueTest ext
1037		final LinkedTransferQueue q = new LinkedTransferQueue();
1038
1039		Thread t = newStartedThread(new CheckedRunnable() {
1040	<	void realRun() {
1040	>	public void realRun() {
1041		while (! q.hasWaitingConsumer())
1042		Thread.yield();
1043	<	threadAssertTrue(q.hasWaitingConsumer());
1044	<	threadAssertTrue(q.isEmpty());
1045	<	threadAssertTrue(q.size() == 0);
1000	<	threadAssertTrue(q.tryTransfer(hotPotato));
1043	>	assertTrue(q.hasWaitingConsumer());
1044	>	checkEmpty(q);
1045	>	assertTrue(q.tryTransfer(hotPotato));
1046		}});
1047
1048	<	assertTrue(q.take() == hotPotato);
1049	<	assertTrue(q.isEmpty());
1050	<	t.join();
1048	>	assertSame(q.take(), hotPotato);
1049	>	checkEmpty(q);
1050	>	awaitTermination(t, MEDIUM_DELAY_MS);
1051		}
1052
1053		/**
1054	<	* tryTransfer waits the amount given if interrupted, and
1055	<	* throws interrupted exception
1054	>	* tryTransfer waits the amount given, and throws
1055	>	* InterruptedException when interrupted.
1056		*/
1057		public void testTryTransfer5() throws InterruptedException {
1058		final LinkedTransferQueue q = new LinkedTransferQueue();
1059	+	final CountDownLatch threadStarted = new CountDownLatch(1);
1060	+	assertTrue(q.isEmpty());
1061
1062	<	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
1063	<	void realRun() throws InterruptedException {
1064	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
1062	>	Thread t = newStartedThread(new CheckedRunnable() {
1063	>	public void realRun() throws InterruptedException {
1064	>	long t0 = System.nanoTime();
1065	>	threadStarted.countDown();
1066	>	try {
1067	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
1068	>	shouldThrow();
1069	>	} catch (InterruptedException success) {}
1070	>	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
1071	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
1072		}});
1073
1074	<	Thread.sleep(SMALL_DELAY_MS);
1075	<	toInterrupt.interrupt();
1076	<	toInterrupt.join();
1074	>	threadStarted.await();
1075	>	while (q.isEmpty())
1076	>	Thread.yield();
1077	>	Thread.sleep(SHORT_DELAY_MS);
1078	>	t.interrupt();
1079	>	awaitTermination(t, MEDIUM_DELAY_MS);
1080	>	checkEmpty(q);
1081		}
1082
1083		/**
1084	<	* tryTransfer gives up after the timeout and return false
1084	>	* tryTransfer gives up after the timeout and returns false
1085		*/
1086		public void testTryTransfer6() throws InterruptedException {
1087		final LinkedTransferQueue q = new LinkedTransferQueue();
1088
1089		Thread t = newStartedThread(new CheckedRunnable() {
1090	<	void realRun() throws InterruptedException {
1091	<	threadAssertFalse
1092	<	(q.tryTransfer(new Object(),
1093	<	SHORT_DELAY_MS, MILLISECONDS));
1090	>	public void realRun() throws InterruptedException {
1091	>	long t0 = System.nanoTime();
1092	>	assertFalse(q.tryTransfer(new Object(),
1093	>	SHORT_DELAY_MS, MILLISECONDS));
1094	>	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
1095	>	checkEmpty(q);
1096		}});
1097
1098	<	Thread.sleep(SMALL_DELAY_MS);
1099	<	assertTrue(q.isEmpty());
1040	<	t.join();
1098	>	awaitTermination(t, MEDIUM_DELAY_MS);
1099	>	checkEmpty(q);
1100		}
1101
1102		/**
#	Line 1049 | Line 1108 | public class LinkedTransferQueueTest ext
1108		assertTrue(q.offer(four));
1109
1110		Thread t = newStartedThread(new CheckedRunnable() {
1111	<	void realRun() throws InterruptedException {
1112	<	threadAssertTrue(q.tryTransfer(five,
1113	<	MEDIUM_DELAY_MS, MILLISECONDS));
1055	<	threadAssertTrue(q.isEmpty());
1111	>	public void realRun() throws InterruptedException {
1112	>	assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
1113	>	checkEmpty(q);
1114		}});
1115
1116	<	Thread.sleep(SHORT_DELAY_MS);
1116	>	while (q.size() != 2)
1117	>	Thread.yield();
1118		assertEquals(2, q.size());
1119	<	assertEquals(four, q.poll());
1120	<	assertEquals(five, q.poll());
1121	<	assertTrue(q.isEmpty());
1122	<	t.join();
1119	>	assertSame(four, q.poll());
1120	>	assertSame(five, q.poll());
1121	>	checkEmpty(q);
1122	>	awaitTermination(t, MEDIUM_DELAY_MS);
1123		}
1124
1125		/**
1126	<	* tryTransfer attempts to enqueue into the q and fails returning
1127	<	* false not enqueueing and the successive poll is null
1126	>	* tryTransfer attempts to enqueue into the queue and fails
1127	>	* returning false not enqueueing and the successive poll is null
1128		*/
1129		public void testTryTransfer8() throws InterruptedException {
1130		final LinkedTransferQueue q = new LinkedTransferQueue();
1131		assertTrue(q.offer(four));
1132		assertEquals(1, q.size());
1133	+	long t0 = System.nanoTime();
1134		assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1135	+	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
1136		assertEquals(1, q.size());
1137	<	assertEquals(four, q.poll());
1077	<	threadAssertTrue(q.isEmpty());
1137	>	assertSame(four, q.poll());
1138		assertNull(q.poll());
1139	+	checkEmpty(q);
1140		}
1141
1142		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1143		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1144	<	assertTrue(q.isEmpty());
1144	>	checkEmpty(q);
1145		for (int i = 0; i < n; i++) {
1146		assertEquals(i, q.size());
1147		assertTrue(q.offer(i));
#	Line 1089 | Line 1150 | public class LinkedTransferQueueTest ext
1150		assertFalse(q.isEmpty());
1151		return q;
1152		}
1092	–
1093	–	private static class ConsumerObserver {
1094	–
1095	–	private int waitingConsumers;
1096	–
1097	–	private ConsumerObserver() {
1098	–	}
1099	–
1100	–	private void setWaitingConsumer(int i) {
1101	–	this.waitingConsumers = i;
1102	–	}
1103	–
1104	–	private int getWaitingConsumers() {
1105	–	return waitingConsumers;
1106	–	}
1107	–	}
1153		}

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