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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.10 by jsr166, Thu Aug 6 03:55:39 2009 UTC vs.
Revision 1.42 by jsr166, Thu Nov 18 20:21:53 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	>	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 49 | Line 84 | public class LinkedTransferQueueTest ext
84		try {
85		new LinkedTransferQueue(null);
86		shouldThrow();
87	<	} catch (NullPointerException success) {
53	<	}
87	>	} catch (NullPointerException success) {}
88		}
89
90		/**
#	Line 62 | Line 96 | public class LinkedTransferQueueTest ext
96		Integer[] ints = new Integer[SIZE];
97		new LinkedTransferQueue(Arrays.asList(ints));
98		shouldThrow();
99	<	} catch (NullPointerException success) {
66	<	}
99	>	} catch (NullPointerException success) {}
100		}
101
102		/**
#	Line 78 | Line 111 | public class LinkedTransferQueueTest ext
111		}
112		new LinkedTransferQueue(Arrays.asList(ints));
113		shouldThrow();
114	<	} catch (NullPointerException success) {
82	<	}
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 125 | Line 163 | public class LinkedTransferQueueTest ext
163		LinkedTransferQueue q = new LinkedTransferQueue();
164		q.offer(null);
165		shouldThrow();
166	<	} catch (NullPointerException success) {
129	<	}
166	>	} catch (NullPointerException success) {}
167		}
168
169		/**
#	Line 137 | Line 174 | public class LinkedTransferQueueTest ext
174		LinkedTransferQueue q = new LinkedTransferQueue();
175		q.add(null);
176		shouldThrow();
177	<	} catch (NullPointerException success) {
141	<	}
177	>	} catch (NullPointerException success) {}
178		}
179
180		/**
#	Line 149 | Line 185 | public class LinkedTransferQueueTest ext
185		LinkedTransferQueue q = new LinkedTransferQueue();
186		q.addAll(null);
187		shouldThrow();
188	<	} catch (NullPointerException success) {
153	<	}
188	>	} catch (NullPointerException success) {}
189		}
190
191		/**
#	Line 161 | Line 196 | public class LinkedTransferQueueTest ext
196		LinkedTransferQueue q = populatedQueue(SIZE);
197		q.addAll(q);
198		shouldThrow();
199	<	} catch (IllegalArgumentException success) {
165	<	}
199	>	} catch (IllegalArgumentException success) {}
200		}
201
202		/**
#	Line 174 | Line 208 | public class LinkedTransferQueueTest ext
208		Integer[] ints = new Integer[SIZE];
209		q.addAll(Arrays.asList(ints));
210		shouldThrow();
211	<	} catch (NullPointerException success) {
178	<	}
211	>	} catch (NullPointerException success) {}
212		}
213
214		/**
#	Line 191 | Line 224 | public class LinkedTransferQueueTest ext
224		}
225		q.addAll(Arrays.asList(ints));
226		shouldThrow();
227	<	} catch (NullPointerException success) {
195	<	}
227	>	} catch (NullPointerException success) {}
228		}
229
230		/**
#	Line 229 | 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		}
235	–	assertEquals(q.size(), SIZE);
268		}
269
270		/**
#	Line 246 | Line 278 | public class LinkedTransferQueueTest ext
278		}
279
280		/**
281	<	* take blocks interruptibly when empty
250	<	*/
251	<	public void testTakeFromEmpty() throws InterruptedException {
252	<	final LinkedTransferQueue q = new LinkedTransferQueue();
253	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
254	<	void realRun() throws InterruptedException {
255	<	q.take();
256	<	}});
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 = newStartedThread(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	<	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 296 | 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 314 | Line 347 | public class LinkedTransferQueueTest ext
347		* returning timeout status
348		*/
349		public void testInterruptedTimedPoll() throws InterruptedException {
350	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
351	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
352	<	void realRun() throws InterruptedException {
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(LONG_DELAY_MS,
356	<	MILLISECONDS));
355	>	long t0 = System.nanoTime();
356	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
357	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
358	>	}
359	>	long t0 = System.nanoTime();
360	>	aboutToWait.countDown();
361	>	try {
362	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
363	>	shouldThrow();
364	>	} catch (InterruptedException success) {
365	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
366		}
324	–	q.poll(LONG_DELAY_MS, MILLISECONDS);
367		}});
368	<	Thread.sleep(SMALL_DELAY_MS);
368	>
369	>	aboutToWait.await();
370	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
371		t.interrupt();
372	<	t.join();
373	<	assertEquals(q.size(), 0);
330	<	assertNull(q.poll());
372	>	awaitTermination(t, MEDIUM_DELAY_MS);
373	>	checkEmpty(q);
374		}
375
376		/**
377	<	* timed poll before a delayed offer fails; after offer succeeds;
378	<	* on interruption throws
377	>	* timed poll after thread interrupted throws InterruptedException
378	>	* instead of returning timeout status
379		*/
380	<	public void testTimedPollWithOffer() throws InterruptedException {
381	<	final LinkedTransferQueue q = new LinkedTransferQueue();
382	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
383	<	void realRun() throws InterruptedException {
384	<	threadAssertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
385	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
386	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
380	>	public void testTimedPollAfterInterrupt() throws InterruptedException {
381	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
382	>	Thread t = newStartedThread(new CheckedRunnable() {
383	>	public void realRun() throws InterruptedException {
384	>	Thread.currentThread().interrupt();
385	>	for (int i = 0; i < SIZE; ++i) {
386	>	long t0 = System.nanoTime();
387	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
388	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
389	>	}
390	>	try {
391	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
392	>	shouldThrow();
393	>	} catch (InterruptedException success) {}
394		}});
395	<	Thread.sleep(SMALL_DELAY_MS);
396	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
397	<	t.interrupt();
348	<	t.join();
395	>
396	>	awaitTermination(t, MEDIUM_DELAY_MS);
397	>	checkEmpty(q);
398		}
399
400		/**
401		* peek returns next element, or null if empty
402		*/
403	<	public void testPeek() {
403	>	public void testPeek() throws InterruptedException {
404		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
405		for (int i = 0; i < SIZE; ++i) {
406		assertEquals(i, (int) q.peek());
#	Line 360 | Line 409 | public class LinkedTransferQueueTest ext
409		i != (int) q.peek());
410		}
411		assertNull(q.peek());
412	+	checkEmpty(q);
413		}
414
415		/**
416		* element returns next element, or throws NoSuchElementException if empty
417		*/
418	<	public void testElement() {
418	>	public void testElement() throws InterruptedException {
419		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
420		for (int i = 0; i < SIZE; ++i) {
421		assertEquals(i, (int) q.element());
#	Line 374 | Line 424 | public class LinkedTransferQueueTest ext
424		try {
425		q.element();
426		shouldThrow();
427	<	} catch (NoSuchElementException success) {
428	<	}
427	>	} catch (NoSuchElementException success) {}
428	>	checkEmpty(q);
429		}
430
431		/**
432		* remove removes next element, or throws NoSuchElementException if empty
433		*/
434	<	public void testRemove() {
434	>	public void testRemove() throws InterruptedException {
435		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
436		for (int i = 0; i < SIZE; ++i) {
437		assertEquals(i, (int) q.remove());
#	Line 389 | Line 439 | public class LinkedTransferQueueTest ext
439		try {
440		q.remove();
441		shouldThrow();
442	<	} catch (NoSuchElementException success) {
443	<	}
442	>	} catch (NoSuchElementException success) {}
443	>	checkEmpty(q);
444		}
445
446		/**
447		* remove(x) removes x and returns true if present
448		*/
449	<	public void testRemoveElement() {
449	>	public void testRemoveElement() throws InterruptedException {
450		LinkedTransferQueue q = populatedQueue(SIZE);
451	<	for (int i = 1; i < SIZE; i += 2) {
451	>	for (int i = 1; i < SIZE; i+=2) {
452	>	assertTrue(q.contains(i));
453		assertTrue(q.remove(i));
454	+	assertFalse(q.contains(i));
455	+	assertTrue(q.contains(i-1));
456		}
457	<	for (int i = 0; i < SIZE; i += 2) {
457	>	for (int i = 0; i < SIZE; i+=2) {
458	>	assertTrue(q.contains(i));
459		assertTrue(q.remove(i));
460	<	assertFalse(q.remove(i + 1));
460	>	assertFalse(q.contains(i));
461	>	assertFalse(q.remove(i+1));
462	>	assertFalse(q.contains(i+1));
463		}
464	<	assertTrue(q.isEmpty());
464	>	checkEmpty(q);
465		}
466
467		/**
#	Line 418 | Line 474 | public class LinkedTransferQueueTest ext
474		assertTrue(q.remove(one));
475		assertTrue(q.remove(two));
476		assertTrue(q.add(three));
477	<	assertTrue(q.take() != null);
477	>	assertSame(q.take(), three);
478		}
479
480		/**
#	Line 436 | Line 492 | public class LinkedTransferQueueTest ext
492		/**
493		* clear removes all elements
494		*/
495	<	public void testClear() {
495	>	public void testClear() throws InterruptedException {
496		LinkedTransferQueue q = populatedQueue(SIZE);
497		q.clear();
498	<	assertTrue(q.isEmpty());
443	<	assertEquals(0, q.size());
498	>	checkEmpty(q);
499		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
500		q.add(one);
501		assertFalse(q.isEmpty());
502	+	assertEquals(1, q.size());
503		assertTrue(q.contains(one));
504		q.clear();
505	<	assertTrue(q.isEmpty());
505	>	checkEmpty(q);
506		}
507
508		/**
#	Line 500 | Line 556 | public class LinkedTransferQueueTest ext
556		}
557
558		/**
559	<	* toArray contains all elements
559	>	* toArray() contains all elements in FIFO order
560		*/
561	<	public void testToArray() throws InterruptedException {
561	>	public void testToArray() {
562		LinkedTransferQueue q = populatedQueue(SIZE);
563		Object[] o = q.toArray();
564		for (int i = 0; i < o.length; i++) {
565	<	assertEquals(o[i], q.take());
565	>	assertSame(o[i], q.poll());
566		}
567		}
568
569		/**
570	<	* toArray(a) contains all elements
570	>	* toArray(a) contains all elements in FIFO order
571		*/
572	<	public void testToArray2() throws InterruptedException {
572	>	public void testToArray2() {
573		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
574		Integer[] ints = new Integer[SIZE];
575	<	ints = q.toArray(ints);
575	>	Integer[] array = q.toArray(ints);
576	>	assertSame(ints, array);
577		for (int i = 0; i < ints.length; i++) {
578	<	assertEquals(ints[i], q.take());
578	>	assertSame(ints[i], q.poll());
579		}
580		}
581
582		/**
583		* toArray(null) throws NullPointerException
584		*/
585	<	public void testToArray_BadArg() {
585	>	public void testToArray_NullArg() {
586	>	LinkedTransferQueue q = populatedQueue(SIZE);
587		try {
588	<	LinkedTransferQueue q = populatedQueue(SIZE);
531	<	Object o[] = q.toArray(null);
588	>	q.toArray(null);
589		shouldThrow();
590	<	} catch (NullPointerException success) {
534	<	}
590	>	} catch (NullPointerException success) {}
591		}
592
593		/**
594	<	* toArray with incompatible array type throws CCE
594	>	* toArray(incompatible array type) throws ArrayStoreException
595		*/
596		public void testToArray1_BadArg() {
597	+	LinkedTransferQueue q = populatedQueue(SIZE);
598		try {
599	<	LinkedTransferQueue q = populatedQueue(SIZE);
543	<	Object o[] = q.toArray(new String[10]);
599	>	q.toArray(new String[10]);
600		shouldThrow();
601	<	} catch (ArrayStoreException success) {
546	<	}
601	>	} catch (ArrayStoreException success) {}
602		}
603
604		/**
#	Line 560 | Line 615 | public class LinkedTransferQueueTest ext
615		}
616
617		/**
618	<	* iterator.remove removes current element
618	>	* iterator.remove() removes current element
619		*/
620		public void testIteratorRemove() {
621		final LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 573 | Line 628 | public class LinkedTransferQueueTest ext
628		it.remove();
629
630		it = q.iterator();
631	<	assertEquals(it.next(), one);
632	<	assertEquals(it.next(), three);
631	>	assertSame(it.next(), one);
632	>	assertSame(it.next(), three);
633		assertFalse(it.hasNext());
634		}
635
#	Line 627 | Line 682 | public class LinkedTransferQueueTest ext
682		*/
683		public void testOfferInExecutor() {
684		final LinkedTransferQueue q = new LinkedTransferQueue();
685	<	q.add(one);
631	<	q.add(two);
685	>	final CountDownLatch threadsStarted = new CountDownLatch(2);
686		ExecutorService executor = Executors.newFixedThreadPool(2);
687
688		executor.execute(new CheckedRunnable() {
689	<	void realRun() {
690	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS,
691	<	MILLISECONDS));
689	>	public void realRun() throws InterruptedException {
690	>	threadsStarted.countDown();
691	>	threadsStarted.await();
692	>	assertTrue(q.offer(one, MEDIUM_DELAY_MS, MILLISECONDS));
693		}});
694
695		executor.execute(new CheckedRunnable() {
696	<	void realRun() throws InterruptedException {
697	<	Thread.sleep(SMALL_DELAY_MS);
698	<	threadAssertEquals(one, q.take());
696	>	public void realRun() throws InterruptedException {
697	>	threadsStarted.countDown();
698	>	threadsStarted.await();
699	>	assertSame(one, q.take());
700	>	checkEmpty(q);
701		}});
702
703		joinPool(executor);
704		}
705
706		/**
707	<	* poll retrieves elements across Executor threads
707	>	* timed poll retrieves elements across Executor threads
708		*/
709		public void testPollInExecutor() {
710		final LinkedTransferQueue q = new LinkedTransferQueue();
711	+	final CountDownLatch threadsStarted = new CountDownLatch(2);
712		ExecutorService executor = Executors.newFixedThreadPool(2);
713
714		executor.execute(new CheckedRunnable() {
715	<	void realRun() throws InterruptedException {
716	<	threadAssertNull(q.poll());
717	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS,
718	<	MILLISECONDS));
719	<	threadAssertTrue(q.isEmpty());
715	>	public void realRun() throws InterruptedException {
716	>	assertNull(q.poll());
717	>	threadsStarted.countDown();
718	>	threadsStarted.await();
719	>	assertSame(one, q.poll(SMALL_DELAY_MS, MILLISECONDS));
720	>	checkEmpty(q);
721		}});
722
723		executor.execute(new CheckedRunnable() {
724	<	void realRun() throws InterruptedException {
725	<	Thread.sleep(SMALL_DELAY_MS);
724	>	public void realRun() throws InterruptedException {
725	>	threadsStarted.countDown();
726	>	threadsStarted.await();
727		q.put(one);
728		}});
729
#	Line 689 | Line 749 | public class LinkedTransferQueueTest ext
749		LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
750
751		assertEquals(q.size(), r.size());
752	+	assertEquals(q.toString(), r.toString());
753	+	assertTrue(Arrays.equals(q.toArray(), r.toArray()));
754		while (!q.isEmpty()) {
755		assertEquals(q.remove(), r.remove());
756		}
#	Line 702 | Line 764 | public class LinkedTransferQueueTest ext
764		try {
765		q.drainTo(null);
766		shouldThrow();
767	<	} catch (NullPointerException success) {
706	<	}
767	>	} catch (NullPointerException success) {}
768		}
769
770		/**
#	Line 714 | Line 775 | public class LinkedTransferQueueTest ext
775		try {
776		q.drainTo(q);
777		shouldThrow();
778	<	} catch (IllegalArgumentException success) {
718	<	}
778	>	} catch (IllegalArgumentException success) {}
779		}
780
781		/**
#	Line 745 | Line 805 | public class LinkedTransferQueueTest ext
805		}
806
807		/**
808	<	* drainTo empties full queue, unblocking a waiting put.
808	>	* drainTo(c) empties full queue, unblocking a waiting put.
809		*/
810		public void testDrainToWithActivePut() throws InterruptedException {
811		final LinkedTransferQueue q = populatedQueue(SIZE);
812		Thread t = newStartedThread(new CheckedRunnable() {
813	<	void realRun() {
813	>	public void realRun() {
814		q.put(SIZE + 1);
815		}});
816		ArrayList l = new ArrayList();
#	Line 759 | Line 819 | public class LinkedTransferQueueTest ext
819		for (int i = 0; i < SIZE; ++i) {
820		assertEquals(l.get(i), i);
821		}
822	<	t.join();
822	>	awaitTermination(t, MEDIUM_DELAY_MS);
823		assertTrue(q.size() + l.size() >= SIZE);
824		}
825
#	Line 769 | Line 829 | public class LinkedTransferQueueTest ext
829		public void testDrainToNullN() {
830		LinkedTransferQueue q = populatedQueue(SIZE);
831		try {
832	<	q.drainTo(null, 0);
832	>	q.drainTo(null, SIZE);
833		shouldThrow();
834	<	} catch (NullPointerException success) {
775	<	}
834	>	} catch (NullPointerException success) {}
835		}
836
837		/**
#	Line 781 | Line 840 | public class LinkedTransferQueueTest ext
840		public void testDrainToSelfN() {
841		LinkedTransferQueue q = populatedQueue(SIZE);
842		try {
843	<	q.drainTo(q, 0);
843	>	q.drainTo(q, SIZE);
844		shouldThrow();
845	<	} catch (IllegalArgumentException success) {
787	<	}
845	>	} catch (IllegalArgumentException success) {}
846		}
847
848		/**
849	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
849	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
850		*/
851		public void testDrainToN() {
852		LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 810 | Line 868 | public class LinkedTransferQueueTest ext
868		}
869
870		/**
871	<	* poll and take decrement the waiting consumer count
871	>	* timed poll() or take() increments the waiting consumer count;
872	>	* offer(e) decrements the waiting consumer count
873		*/
874		public void testWaitingConsumer() throws InterruptedException {
875		final LinkedTransferQueue q = new LinkedTransferQueue();
876	<	final ConsumerObserver waiting = new ConsumerObserver();
876	>	assertEquals(q.getWaitingConsumerCount(), 0);
877	>	assertFalse(q.hasWaitingConsumer());
878	>	final CountDownLatch threadStarted = new CountDownLatch(1);
879
880		Thread t = newStartedThread(new CheckedRunnable() {
881	<	void realRun() throws InterruptedException {
882	<	Thread.sleep(SMALL_DELAY_MS);
883	<	threadAssertTrue(q.hasWaitingConsumer());
884	<	waiting.setWaitingConsumer(q.getWaitingConsumerCount());
885	<	threadAssertTrue(q.offer(new Object()));
881	>	public void realRun() throws InterruptedException {
882	>	threadStarted.countDown();
883	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
884	>	assertEquals(q.getWaitingConsumerCount(), 0);
885	>	assertFalse(q.hasWaitingConsumer());
886		}});
887
888	<	assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) != null);
889	<	assertTrue(q.getWaitingConsumerCount()
890	<	< waiting.getWaitingConsumers());
891	<	t.join();
888	>	threadStarted.await();
889	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
890	>	assertEquals(q.getWaitingConsumerCount(), 1);
891	>	assertTrue(q.hasWaitingConsumer());
892	>
893	>	assertTrue(q.offer(one));
894	>	assertEquals(q.getWaitingConsumerCount(), 0);
895	>	assertFalse(q.hasWaitingConsumer());
896	>
897	>	awaitTermination(t, MEDIUM_DELAY_MS);
898		}
899
900		/**
#	Line 838 | Line 905 | public class LinkedTransferQueueTest ext
905		LinkedTransferQueue q = new LinkedTransferQueue();
906		q.transfer(null);
907		shouldThrow();
908	<	} catch (NullPointerException ex) {
842	<	}
908	>	} catch (NullPointerException success) {}
909		}
910
911		/**
#	Line 849 | Line 915 | public class LinkedTransferQueueTest ext
915		public void testTransfer2() throws InterruptedException {
916		final LinkedTransferQueue<Integer> q
917		= new LinkedTransferQueue<Integer>();
918	+	final CountDownLatch threadStarted = new CountDownLatch(1);
919
920		Thread t = newStartedThread(new CheckedRunnable() {
921	<	void realRun() throws InterruptedException {
922	<	q.transfer(SIZE);
923	<	threadAssertTrue(q.isEmpty());
921	>	public void realRun() throws InterruptedException {
922	>	threadStarted.countDown();
923	>	q.transfer(five);
924	>	checkEmpty(q);
925		}});
926
927	<	Thread.sleep(SHORT_DELAY_MS);
927	>	threadStarted.await();
928	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
929		assertEquals(1, q.size());
930	<	assertEquals(SIZE, (int) q.poll());
931	<	assertTrue(q.isEmpty());
932	<	t.join();
930	>	assertSame(five, q.poll());
931	>	checkEmpty(q);
932	>	awaitTermination(t, MEDIUM_DELAY_MS);
933		}
934
935		/**
#	Line 871 | Line 940 | public class LinkedTransferQueueTest ext
940		= new LinkedTransferQueue<Integer>();
941
942		Thread first = newStartedThread(new CheckedRunnable() {
943	<	void realRun() throws InterruptedException {
944	<	Integer i = SIZE + 1;
945	<	q.transfer(i);
946	<	threadAssertTrue(!q.contains(i));
878	<	threadAssertEquals(1, q.size());
943	>	public void realRun() throws InterruptedException {
944	>	q.transfer(four);
945	>	assertTrue(!q.contains(four));
946	>	assertEquals(1, q.size());
947		}});
948
949		Thread interruptedThread = newStartedThread(
950		new CheckedInterruptedRunnable() {
951	<	void realRun() throws InterruptedException {
952	<	while (q.size() == 0)
951	>	public void realRun() throws InterruptedException {
952	>	while (q.isEmpty())
953		Thread.yield();
954	<	q.transfer(SIZE);
954	>	q.transfer(five);
955		}});
956
957		while (q.size() < 2)
958		Thread.yield();
959		assertEquals(2, q.size());
960	<	assertEquals(SIZE + 1, (int) q.poll());
960	>	assertSame(four, q.poll());
961		first.join();
962		assertEquals(1, q.size());
963		interruptedThread.interrupt();
964		interruptedThread.join();
965	<	assertEquals(0, q.size());
898	<	assertTrue(q.isEmpty());
965	>	checkEmpty(q);
966		}
967
968		/**
#	Line 906 | Line 973 | public class LinkedTransferQueueTest ext
973		final LinkedTransferQueue q = new LinkedTransferQueue();
974
975		Thread t = newStartedThread(new CheckedRunnable() {
976	<	void realRun() throws InterruptedException {
976	>	public void realRun() throws InterruptedException {
977		q.transfer(four);
978	<	threadAssertFalse(q.contains(four));
979	<	threadAssertEquals(three, q.poll());
978	>	assertFalse(q.contains(four));
979	>	assertSame(three, q.poll());
980		}});
981
982	<	Thread.sleep(SHORT_DELAY_MS);
982	>	while (q.isEmpty())
983	>	Thread.yield();
984	>	assertFalse(q.isEmpty());
985	>	assertEquals(1, q.size());
986		assertTrue(q.offer(three));
987	<	assertEquals(four, q.poll());
988	<	t.join();
987	>	assertSame(four, q.poll());
988	>	awaitTermination(t, MEDIUM_DELAY_MS);
989		}
990
991		/**
#	Line 927 | Line 997 | public class LinkedTransferQueueTest ext
997		= new LinkedTransferQueue<Integer>();
998
999		Thread t = newStartedThread(new CheckedRunnable() {
1000	<	void realRun() throws InterruptedException {
1001	<	q.transfer(SIZE);
1002	<	threadAssertTrue(q.isEmpty());
1000	>	public void realRun() throws InterruptedException {
1001	>	q.transfer(four);
1002	>	checkEmpty(q);
1003		}});
1004
1005	<	Thread.sleep(SHORT_DELAY_MS);
1006	<	assertEquals(SIZE, (int) q.take());
1007	<	assertTrue(q.isEmpty());
1008	<	t.join();
1005	>	while (q.isEmpty())
1006	>	Thread.yield();
1007	>	assertFalse(q.isEmpty());
1008	>	assertEquals(1, q.size());
1009	>	assertSame(four, q.take());
1010	>	checkEmpty(q);
1011	>	awaitTermination(t, MEDIUM_DELAY_MS);
1012		}
1013
1014		/**
#	Line 946 | Line 1019 | public class LinkedTransferQueueTest ext
1019		final LinkedTransferQueue q = new LinkedTransferQueue();
1020		q.tryTransfer(null);
1021		shouldThrow();
1022	<	} catch (NullPointerException ex) {
950	<	}
1022	>	} catch (NullPointerException success) {}
1023		}
1024
1025		/**
1026		* tryTransfer returns false and does not enqueue if there are no
1027		* consumers waiting to poll or take.
1028		*/
1029	<	public void testTryTransfer2() {
1029	>	public void testTryTransfer2() throws InterruptedException {
1030		final LinkedTransferQueue q = new LinkedTransferQueue();
1031		assertFalse(q.tryTransfer(new Object()));
1032		assertFalse(q.hasWaitingConsumer());
1033	<	assertTrue(q.isEmpty());
962	<	assertEquals(0, q.size());
1033	>	checkEmpty(q);
1034		}
1035
1036		/**
#	Line 971 | Line 1042 | public class LinkedTransferQueueTest ext
1042		final LinkedTransferQueue q = new LinkedTransferQueue();
1043
1044		Thread t = newStartedThread(new CheckedRunnable() {
1045	<	void realRun() {
1045	>	public void realRun() {
1046		while (! q.hasWaitingConsumer())
1047		Thread.yield();
1048	<	threadAssertTrue(q.hasWaitingConsumer());
1049	<	threadAssertTrue(q.isEmpty());
1050	<	threadAssertTrue(q.size() == 0);
980	<	threadAssertTrue(q.tryTransfer(hotPotato));
1048	>	assertTrue(q.hasWaitingConsumer());
1049	>	checkEmpty(q);
1050	>	assertTrue(q.tryTransfer(hotPotato));
1051		}});
1052
1053	<	assertTrue(q.poll(MEDIUM_DELAY_MS, MILLISECONDS) == hotPotato);
1054	<	assertTrue(q.isEmpty());
1055	<	t.join();
1053	>	assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
1054	>	checkEmpty(q);
1055	>	awaitTermination(t, MEDIUM_DELAY_MS);
1056		}
1057
1058		/**
#	Line 994 | Line 1064 | public class LinkedTransferQueueTest ext
1064		final LinkedTransferQueue q = new LinkedTransferQueue();
1065
1066		Thread t = newStartedThread(new CheckedRunnable() {
1067	<	void realRun() {
1067	>	public void realRun() {
1068		while (! q.hasWaitingConsumer())
1069		Thread.yield();
1070	<	threadAssertTrue(q.hasWaitingConsumer());
1071	<	threadAssertTrue(q.isEmpty());
1072	<	threadAssertTrue(q.size() == 0);
1003	<	threadAssertTrue(q.tryTransfer(hotPotato));
1070	>	assertTrue(q.hasWaitingConsumer());
1071	>	checkEmpty(q);
1072	>	assertTrue(q.tryTransfer(hotPotato));
1073		}});
1074
1075	<	assertTrue(q.take() == hotPotato);
1076	<	assertTrue(q.isEmpty());
1077	<	t.join();
1075	>	assertSame(q.take(), hotPotato);
1076	>	checkEmpty(q);
1077	>	awaitTermination(t, MEDIUM_DELAY_MS);
1078		}
1079
1080		/**
1081	<	* tryTransfer waits the amount given if interrupted, and
1082	<	* throws interrupted exception
1081	>	* tryTransfer waits the amount given, and throws
1082	>	* InterruptedException when interrupted.
1083		*/
1084		public void testTryTransfer5() throws InterruptedException {
1085		final LinkedTransferQueue q = new LinkedTransferQueue();
1086	+	final CountDownLatch threadStarted = new CountDownLatch(1);
1087	+	assertTrue(q.isEmpty());
1088
1089	<	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
1090	<	void realRun() throws InterruptedException {
1091	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
1089	>	Thread t = newStartedThread(new CheckedRunnable() {
1090	>	public void realRun() throws InterruptedException {
1091	>	long t0 = System.nanoTime();
1092	>	threadStarted.countDown();
1093	>	try {
1094	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
1095	>	shouldThrow();
1096	>	} catch (InterruptedException success) {}
1097	>	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
1098	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
1099		}});
1100
1101	<	Thread.sleep(SMALL_DELAY_MS);
1102	<	toInterrupt.interrupt();
1103	<	toInterrupt.join();
1101	>	threadStarted.await();
1102	>	while (q.isEmpty())
1103	>	Thread.yield();
1104	>	Thread.sleep(SHORT_DELAY_MS);
1105	>	t.interrupt();
1106	>	awaitTermination(t, MEDIUM_DELAY_MS);
1107	>	checkEmpty(q);
1108		}
1109
1110		/**
1111	<	* tryTransfer gives up after the timeout and return false
1111	>	* tryTransfer gives up after the timeout and returns false
1112		*/
1113		public void testTryTransfer6() throws InterruptedException {
1114		final LinkedTransferQueue q = new LinkedTransferQueue();
1115
1116		Thread t = newStartedThread(new CheckedRunnable() {
1117	<	void realRun() throws InterruptedException {
1118	<	threadAssertFalse
1119	<	(q.tryTransfer(new Object(),
1120	<	SHORT_DELAY_MS, MILLISECONDS));
1117	>	public void realRun() throws InterruptedException {
1118	>	long t0 = System.nanoTime();
1119	>	assertFalse(q.tryTransfer(new Object(),
1120	>	SHORT_DELAY_MS, MILLISECONDS));
1121	>	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
1122	>	checkEmpty(q);
1123		}});
1124
1125	<	Thread.sleep(SMALL_DELAY_MS);
1126	<	assertTrue(q.isEmpty());
1043	<	t.join();
1125	>	awaitTermination(t, MEDIUM_DELAY_MS);
1126	>	checkEmpty(q);
1127		}
1128
1129		/**
#	Line 1052 | Line 1135 | public class LinkedTransferQueueTest ext
1135		assertTrue(q.offer(four));
1136
1137		Thread t = newStartedThread(new CheckedRunnable() {
1138	<	void realRun() throws InterruptedException {
1139	<	threadAssertTrue(q.tryTransfer(five,
1140	<	MEDIUM_DELAY_MS, MILLISECONDS));
1058	<	threadAssertTrue(q.isEmpty());
1138	>	public void realRun() throws InterruptedException {
1139	>	assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
1140	>	checkEmpty(q);
1141		}});
1142
1143	<	Thread.sleep(SHORT_DELAY_MS);
1143	>	while (q.size() != 2)
1144	>	Thread.yield();
1145		assertEquals(2, q.size());
1146	<	assertEquals(four, q.poll());
1147	<	assertEquals(five, q.poll());
1148	<	assertTrue(q.isEmpty());
1149	<	t.join();
1146	>	assertSame(four, q.poll());
1147	>	assertSame(five, q.poll());
1148	>	checkEmpty(q);
1149	>	awaitTermination(t, MEDIUM_DELAY_MS);
1150		}
1151
1152		/**
1153	<	* tryTransfer attempts to enqueue into the q and fails returning
1154	<	* false not enqueueing and the successive poll is null
1153	>	* tryTransfer attempts to enqueue into the queue and fails
1154	>	* returning false not enqueueing and the successive poll is null
1155		*/
1156		public void testTryTransfer8() throws InterruptedException {
1157		final LinkedTransferQueue q = new LinkedTransferQueue();
1158		assertTrue(q.offer(four));
1159		assertEquals(1, q.size());
1160	+	long t0 = System.nanoTime();
1161		assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1162	+	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
1163		assertEquals(1, q.size());
1164	<	assertEquals(four, q.poll());
1080	<	threadAssertTrue(q.isEmpty());
1164	>	assertSame(four, q.poll());
1165		assertNull(q.poll());
1166	+	checkEmpty(q);
1167		}
1168
1169		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1170		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1171	<	assertTrue(q.isEmpty());
1171	>	checkEmpty(q);
1172		for (int i = 0; i < n; i++) {
1173		assertEquals(i, q.size());
1174		assertTrue(q.offer(i));
#	Line 1092 | Line 1177 | public class LinkedTransferQueueTest ext
1177		assertFalse(q.isEmpty());
1178		return q;
1179		}
1095	–
1096	–	private static class ConsumerObserver {
1097	–
1098	–	private int waitingConsumers;
1099	–
1100	–	private ConsumerObserver() {
1101	–	}
1102	–
1103	–	private void setWaitingConsumer(int i) {
1104	–	this.waitingConsumers = i;
1105	–	}
1106	–
1107	–	private int getWaitingConsumers() {
1108	–	return waitingConsumers;
1109	–	}
1110	–	}
1180		}

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