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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.5 by jsr166, Sun Aug 2 08:17:31 2009 UTC vs.
Revision 1.13 by jsr166, Sat Aug 15 00:48:10 2009 UTC

#	Line 15 | Line 15 | import java.util.ArrayList;
15		import java.util.Arrays;
16		import java.util.ConcurrentModificationException;
17		import java.util.Iterator;
18	+	import java.util.List;
19		import java.util.NoSuchElementException;
20		import java.util.concurrent.*;
21	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
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 void main(String[] args) {
#	Line 30 | Line 33 | public class LinkedTransferQueueTest ext
33		return new TestSuite(LinkedTransferQueueTest.class);
34		}
35
36	+	void checkEmpty(LinkedTransferQueue q) throws InterruptedException {
37	+	assertTrue(q.isEmpty());
38	+	assertEquals(0, q.size());
39	+	assertNull(q.peek());
40	+	assertNull(q.poll());
41	+	assertNull(q.poll(0, MILLISECONDS));
42	+	assertEquals(q.toString(), "[]");
43	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
44	+	assertFalse(q.iterator().hasNext());
45	+	try {
46	+	q.element();
47	+	shouldThrow();
48	+	} catch (NoSuchElementException success) {
49	+	}
50	+	try {
51	+	q.iterator().next();
52	+	shouldThrow();
53	+	} catch (NoSuchElementException success) {
54	+	}
55	+	try {
56	+	q.remove();
57	+	shouldThrow();
58	+	} catch (NoSuchElementException success) {
59	+	}
60	+	}
61	+
62		/**
63	<	* Constructor builds new queue with size being zero and empty being true
63	>	* Constructor builds new queue with size being zero and empty
64	>	* being true
65		*/
66		public void testConstructor1() {
67		assertEquals(0, new LinkedTransferQueue().size());
#	Line 39 | Line 69 | public class LinkedTransferQueueTest ext
69		}
70
71		/**
72	<	* Initializing constructor with null collection throws NullPointerException
72	>	* Initializing constructor with null collection throws
73	>	* NullPointerException
74		*/
75		public void testConstructor2() {
76		try {
#	Line 50 | Line 81 | public class LinkedTransferQueueTest ext
81		}
82
83		/**
84	<	* Initializing from Collection of null elements throws NullPointerException
84	>	* Initializing from Collection of null elements throws
85	>	* NullPointerException
86		*/
87		public void testConstructor3() {
88		try {
89		Integer[] ints = new Integer[SIZE];
90	<	LinkedTransferQueue q = new LinkedTransferQueue(Arrays.asList(ints));
90	>	new LinkedTransferQueue(Arrays.asList(ints));
91		shouldThrow();
92		} catch (NullPointerException success) {
93		}
#	Line 71 | Line 103 | public class LinkedTransferQueueTest ext
103		for (int i = 0; i < SIZE - 1; ++i) {
104		ints[i] = i;
105		}
106	<	LinkedTransferQueue q = new LinkedTransferQueue(Arrays.asList(ints));
106	>	new LinkedTransferQueue(Arrays.asList(ints));
107		shouldThrow();
108		} catch (NullPointerException success) {
109		}
#	Line 81 | Line 113 | public class LinkedTransferQueueTest ext
113		* Queue contains all elements of the collection it is initialized by
114		*/
115		public void testConstructor5() {
116	<	try {
117	<	Integer[] ints = new Integer[SIZE];
118	<	for (int i = 0; i < SIZE; ++i) {
119	<	ints[i] = i;
120	<	}
121	<	LinkedTransferQueue q = new LinkedTransferQueue(Arrays.asList(ints));
122	<	for (int i = 0; i < SIZE; ++i) {
123	<	assertEquals(ints[i], q.poll());
124	<	}
125	<	} finally {
116	>	Integer[] ints = new Integer[SIZE];
117	>	for (int i = 0; i < SIZE; ++i) {
118	>	ints[i] = i;
119	>	}
120	>	List intList = Arrays.asList(ints);
121	>	LinkedTransferQueue q
122	>	= new LinkedTransferQueue(intList);
123	>	assertEquals(q.size(), intList.size());
124	>	assertEquals(q.toString(), intList.toString());
125	>	assertTrue(Arrays.equals(q.toArray(),
126	>	intList.toArray()));
127	>	assertTrue(Arrays.equals(q.toArray(new Object[0]),
128	>	intList.toArray(new Object[0])));
129	>	assertTrue(Arrays.equals(q.toArray(new Object[SIZE]),
130	>	intList.toArray(new Object[SIZE])));
131	>	for (int i = 0; i < SIZE; ++i) {
132	>	assertEquals(ints[i], q.poll());
133		}
134		}
135
136		/**
137	<	* Remaining capacity never decrease nor increase on add or remove
137	>	* remainingCapacity() always returns Integer.MAX_VALUE
138		*/
139		public void testRemainingCapacity() {
140		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
#	Line 173 | Line 212 | public class LinkedTransferQueueTest ext
212		}
213
214		/**
215	<	* addAll of a collection with any null elements throws NullPointerException after
216	<	* possibly adding some elements
215	>	* addAll of a collection with any null elements throws
216	>	* NullPointerException after possibly adding some elements
217		*/
218		public void testAddAll3() {
219		try {
#	Line 223 | Line 262 | public class LinkedTransferQueueTest ext
262		public void testPut() {
263		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
264		for (int i = 0; i < SIZE; ++i) {
265	+	assertEquals(q.size(), i);
266		q.put(i);
267		assertTrue(q.contains(i));
268		}
229	–	assertEquals(q.size(), SIZE);
269		}
270
271		/**
#	Line 244 | Line 283 | public class LinkedTransferQueueTest ext
283		*/
284		public void testTakeFromEmpty() throws InterruptedException {
285		final LinkedTransferQueue q = new LinkedTransferQueue();
286	<	Thread t = new Thread(new Runnable() {
287	<	public void run() {
288	<	try {
250	<	q.take();
251	<	threadShouldThrow();
252	<	} catch (InterruptedException success) {
253	<	} catch (Throwable ex) {
254	<	threadUnexpectedException(ex);
255	<	}
286	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
287	>	void realRun() throws InterruptedException {
288	>	q.take();
289		}});
257	–	t.start();
290		Thread.sleep(SHORT_DELAY_MS);
291		t.interrupt();
292		t.join();
#	Line 264 | Line 296 | public class LinkedTransferQueueTest ext
296		* Take removes existing elements until empty, then blocks interruptibly
297		*/
298		public void testBlockingTake() throws InterruptedException {
299	<	Thread t = new Thread(new Runnable() {
300	<	public void run() {
301	<	try {
302	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
303	<	for (int i = 0; i < SIZE; ++i) {
272	<	threadAssertEquals(i, (int) q.take());
273	<	}
274	<	q.take();
275	<	threadShouldThrow();
276	<	} catch (InterruptedException success) {
277	<	} catch (Throwable ex) {
278	<	threadUnexpectedException(ex);
299	>	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
300	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
301	>	void realRun() throws InterruptedException {
302	>	for (int i = 0; i < SIZE; ++i) {
303	>	threadAssertEquals(i, (int) q.take());
304		}
305	+	q.take();
306		}});
307	<	t.start();
282	<	Thread.sleep(SHORT_DELAY_MS);
307	>	Thread.sleep(SMALL_DELAY_MS);
308		t.interrupt();
309		t.join();
310	+	checkEmpty(q);
311		}
312
313		/**
314		* poll succeeds unless empty
315		*/
316	<	public void testPoll() {
316	>	public void testPoll() throws InterruptedException {
317		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
318		for (int i = 0; i < SIZE; ++i) {
319		assertEquals(i, (int) q.poll());
320		}
321		assertNull(q.poll());
322	+	checkEmpty(q);
323		}
324
325		/**
#	Line 301 | Line 328 | public class LinkedTransferQueueTest ext
328		public void testTimedPoll0() throws InterruptedException {
329		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
330		for (int i = 0; i < SIZE; ++i) {
331	<	assertEquals(i, (int) q.poll(0, TimeUnit.MILLISECONDS));
331	>	assertEquals(i, (int) q.poll(0, MILLISECONDS));
332		}
333	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
333	>	assertNull(q.poll(0, MILLISECONDS));
334	>	checkEmpty(q);
335		}
336
337		/**
#	Line 312 | Line 340 | public class LinkedTransferQueueTest ext
340		public void testTimedPoll() throws InterruptedException {
341		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
342		for (int i = 0; i < SIZE; ++i) {
343	<	assertEquals(i, (int) q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
343	>	long t0 = System.nanoTime();
344	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
345	>	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
346	>	assertTrue(millisElapsed < SMALL_DELAY_MS);
347		}
348	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
348	>	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
349	>	checkEmpty(q);
350		}
351
352		/**
#	Line 322 | Line 354 | public class LinkedTransferQueueTest ext
354		* returning timeout status
355		*/
356		public void testInterruptedTimedPoll() throws InterruptedException {
357	<	Thread t = new Thread(new Runnable() {
358	<	public void run() {
359	<	try {
360	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
361	<	for (int i = 0; i < SIZE; ++i) {
362	<	threadAssertEquals(i, (int) q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
363	<	}
364	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
365	<	} catch (InterruptedException success) {
334	<	} catch (Throwable ex) {
335	<	threadUnexpectedException(ex);
357	>	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
358	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
359	>	void realRun() throws InterruptedException {
360	>	for (int i = 0; i < SIZE; ++i) {
361	>	long t0 = System.nanoTime();
362	>	threadAssertEquals(i, (int) q.poll(LONG_DELAY_MS,
363	>	MILLISECONDS));
364	>	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
365	>	assertTrue(millisElapsed < SMALL_DELAY_MS);
366		}
367	+	q.poll(LONG_DELAY_MS, MILLISECONDS);
368		}});
369	<	t.start();
339	<	Thread.sleep(SHORT_DELAY_MS);
369	>	Thread.sleep(SMALL_DELAY_MS);
370		t.interrupt();
371		t.join();
372	+	checkEmpty(q);
373		}
374
375		/**
#	Line 347 | Line 378 | public class LinkedTransferQueueTest ext
378		*/
379		public void testTimedPollWithOffer() throws InterruptedException {
380		final LinkedTransferQueue q = new LinkedTransferQueue();
381	<	Thread t = new Thread(new Runnable() {
382	<	public void run() {
383	<	try {
384	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
385	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
355	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
356	<	threadShouldThrow();
357	<	} catch (InterruptedException success) {
358	<	} catch (Throwable ex) {
359	<	threadUnexpectedException(ex);
360	<	}
381	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
382	>	void realRun() throws InterruptedException {
383	>	threadAssertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
384	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
385	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
386		}});
362	–	t.start();
387		Thread.sleep(SMALL_DELAY_MS);
388	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
388	>	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
389		t.interrupt();
390		t.join();
391		}
#	Line 369 | Line 393 | public class LinkedTransferQueueTest ext
393		/**
394		* peek returns next element, or null if empty
395		*/
396	<	public void testPeek() {
396	>	public void testPeek() throws InterruptedException {
397		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
398		for (int i = 0; i < SIZE; ++i) {
399		assertEquals(i, (int) q.peek());
#	Line 378 | Line 402 | public class LinkedTransferQueueTest ext
402		i != (int) q.peek());
403		}
404		assertNull(q.peek());
405	+	checkEmpty(q);
406		}
407
408		/**
409		* element returns next element, or throws NoSuchElementException if empty
410		*/
411	<	public void testElement() {
411	>	public void testElement() throws InterruptedException {
412		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
413		for (int i = 0; i < SIZE; ++i) {
414		assertEquals(i, (int) q.element());
#	Line 394 | Line 419 | public class LinkedTransferQueueTest ext
419		shouldThrow();
420		} catch (NoSuchElementException success) {
421		}
422	+	checkEmpty(q);
423		}
424
425		/**
426		* remove removes next element, or throws NoSuchElementException if empty
427		*/
428	<	public void testRemove() {
428	>	public void testRemove() throws InterruptedException {
429		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
430		for (int i = 0; i < SIZE; ++i) {
431		assertEquals(i, (int) q.remove());
#	Line 409 | Line 435 | public class LinkedTransferQueueTest ext
435		shouldThrow();
436		} catch (NoSuchElementException success) {
437		}
438	+	checkEmpty(q);
439		}
440
441		/**
442		* remove(x) removes x and returns true if present
443		*/
444	<	public void testRemoveElement() {
444	>	public void testRemoveElement() throws InterruptedException {
445		LinkedTransferQueue q = populatedQueue(SIZE);
446		for (int i = 1; i < SIZE; i += 2) {
447		assertTrue(q.remove(i));
#	Line 423 | Line 450 | public class LinkedTransferQueueTest ext
450		assertTrue(q.remove(i));
451		assertFalse(q.remove(i + 1));
452		}
453	<	assertTrue(q.isEmpty());
453	>	checkEmpty(q);
454		}
455
456		/**
#	Line 436 | Line 463 | public class LinkedTransferQueueTest ext
463		assertTrue(q.remove(one));
464		assertTrue(q.remove(two));
465		assertTrue(q.add(three));
466	<	assertTrue(q.take() != null);
466	>	assertTrue(q.take() == three);
467		}
468
469		/**
#	Line 454 | Line 481 | public class LinkedTransferQueueTest ext
481		/**
482		* clear removes all elements
483		*/
484	<	public void testClear() {
484	>	public void testClear() throws InterruptedException {
485		LinkedTransferQueue q = populatedQueue(SIZE);
486		q.clear();
487	<	assertTrue(q.isEmpty());
461	<	assertEquals(0, q.size());
487	>	checkEmpty(q);
488		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
489		q.add(one);
490		assertFalse(q.isEmpty());
491	+	assertEquals(1, q.size());
492		assertTrue(q.contains(one));
493		q.clear();
494	<	assertTrue(q.isEmpty());
494	>	checkEmpty(q);
495		}
496
497		/**
#	Line 482 | Line 509 | public class LinkedTransferQueueTest ext
509		}
510
511		/**
512	<	* retainAll(c) retains only those elements of c and reports true if changed
512	>	* retainAll(c) retains only those elements of c and reports true
513	>	* if changed
514		*/
515		public void testRetainAll() {
516		LinkedTransferQueue q = populatedQueue(SIZE);
#	Line 501 | Line 529 | public class LinkedTransferQueueTest ext
529		}
530
531		/**
532	<	* removeAll(c) removes only those elements of c and reports true if changed
532	>	* removeAll(c) removes only those elements of c and reports true
533	>	* if changed
534		*/
535		public void testRemoveAll() {
536		for (int i = 1; i < SIZE; ++i) {
#	Line 516 | Line 545 | public class LinkedTransferQueueTest ext
545		}
546
547		/**
548	<	* toArray contains all elements
548	>	* toArray() contains all elements
549		*/
550		public void testToArray() throws InterruptedException {
551		LinkedTransferQueue q = populatedQueue(SIZE);
#	Line 551 | Line 580 | public class LinkedTransferQueueTest ext
580		}
581
582		/**
583	<	* toArray with incompatible array type throws CCE
583	>	* toArray(incompatible array type) throws CCE
584		*/
585		public void testToArray1_BadArg() {
586		try {
#	Line 568 | 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 596 | Line 627 | public class LinkedTransferQueueTest ext
627		* iterator ordering is FIFO
628		*/
629		public void testIteratorOrdering() {
630	<	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
630	>	final LinkedTransferQueue<Integer> q
631	>	= new LinkedTransferQueue<Integer>();
632		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
633		q.add(one);
634		q.add(two);
#	Line 643 | Line 675 | public class LinkedTransferQueueTest ext
675		q.add(one);
676		q.add(two);
677		ExecutorService executor = Executors.newFixedThreadPool(2);
678	<	executor.execute(new Runnable() {
679	<	public void run() {
680	<	try {
681	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
682	<	} catch (Throwable ex) {
651	<	threadUnexpectedException(ex);
652	<	}
678	>
679	>	executor.execute(new CheckedRunnable() {
680	>	void realRun() {
681	>	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS,
682	>	MILLISECONDS));
683		}});
684
685	<	executor.execute(new Runnable() {
686	<	public void run() {
687	<	try {
688	<	Thread.sleep(SMALL_DELAY_MS);
659	<	threadAssertEquals(one, q.take());
660	<	} catch (Throwable ex) {
661	<	threadUnexpectedException(ex);
662	<	}
685	>	executor.execute(new CheckedRunnable() {
686	>	void realRun() throws InterruptedException {
687	>	Thread.sleep(SMALL_DELAY_MS);
688	>	threadAssertEquals(one, q.take());
689		}});
690
691		joinPool(executor);
692		}
693
694		/**
695	<	* poll retrieves elements across Executor threads
695	>	* timed poll retrieves elements across Executor threads
696		*/
697		public void testPollInExecutor() {
698		final LinkedTransferQueue q = new LinkedTransferQueue();
699		ExecutorService executor = Executors.newFixedThreadPool(2);
700	<	executor.execute(new Runnable() {
701	<	public void run() {
702	<	try {
703	<	threadAssertNull(q.poll());
704	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
705	<	threadAssertTrue(q.isEmpty());
706	<	} catch (Throwable  ex) {
681	<	threadUnexpectedException(ex);
682	<	}
700	>
701	>	executor.execute(new CheckedRunnable() {
702	>	void realRun() throws InterruptedException {
703	>	threadAssertNull(q.poll());
704	>	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS,
705	>	MILLISECONDS));
706	>	threadAssertTrue(q.isEmpty());
707		}});
708
709	<	executor.execute(new Runnable() {
710	<	public void run() {
711	<	try {
712	<	Thread.sleep(SMALL_DELAY_MS);
689	<	q.put(one);
690	<	} catch (Throwable ex) {
691	<	threadUnexpectedException(ex);
692	<	}
709	>	executor.execute(new CheckedRunnable() {
710	>	void realRun() throws InterruptedException {
711	>	Thread.sleep(SMALL_DELAY_MS);
712	>	q.put(one);
713		}});
714
715		joinPool(executor);
#	Line 702 | Line 722 | public class LinkedTransferQueueTest ext
722		LinkedTransferQueue q = populatedQueue(SIZE);
723
724		ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
725	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
725	>	ObjectOutputStream out
726	>	= new ObjectOutputStream(new BufferedOutputStream(bout));
727		out.writeObject(q);
728		out.close();
729
730	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
731	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
730	>	ByteArrayInputStream bin
731	>	= new ByteArrayInputStream(bout.toByteArray());
732	>	ObjectInputStream in
733	>	= new ObjectInputStream(new BufferedInputStream(bin));
734		LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
735
736		assertEquals(q.size(), r.size());
#	Line 767 | Line 790 | public class LinkedTransferQueueTest ext
790		}
791
792		/**
793	<	* drainTo empties full queue, unblocking a waiting put.
793	>	* drainTo(c) empties full queue, unblocking a waiting put.
794		*/
795		public void testDrainToWithActivePut() throws InterruptedException {
796		final LinkedTransferQueue q = populatedQueue(SIZE);
797	<	Thread t = new Thread(new Runnable() {
798	<	public void run() {
799	<	try {
777	<	q.put(SIZE + 1);
778	<	} catch (Throwable ex) {
779	<	threadUnexpectedException(ex);
780	<	}
797	>	Thread t = newStartedThread(new CheckedRunnable() {
798	>	void realRun() {
799	>	q.put(SIZE + 1);
800		}});
782	–	t.start();
801		ArrayList l = new ArrayList();
802		q.drainTo(l);
803		assertTrue(l.size() >= SIZE);
#	Line 796 | Line 814 | public class LinkedTransferQueueTest ext
814		public void testDrainToNullN() {
815		LinkedTransferQueue q = populatedQueue(SIZE);
816		try {
817	<	q.drainTo(null, 0);
817	>	q.drainTo(null, SIZE);
818		shouldThrow();
819		} catch (NullPointerException success) {
820		}
#	Line 808 | Line 826 | public class LinkedTransferQueueTest ext
826		public void testDrainToSelfN() {
827		LinkedTransferQueue q = populatedQueue(SIZE);
828		try {
829	<	q.drainTo(q, 0);
829	>	q.drainTo(q, SIZE);
830		shouldThrow();
831		} catch (IllegalArgumentException success) {
832		}
#	Line 837 | Line 855 | public class LinkedTransferQueueTest ext
855		}
856
857		/**
858	<	* poll and take should decrement the waiting consumer count
858	>	* timed poll() or take() increments the waiting consumer count;
859	>	* offer(e) decrements the waiting consumer count
860		*/
861		public void testWaitingConsumer() throws InterruptedException {
862		final LinkedTransferQueue q = new LinkedTransferQueue();
863	<	final ConsumerObserver waiting = new ConsumerObserver();
864	<	new Thread(new Runnable() {
865	<	public void run() {
866	<	try {
867	<	threadAssertTrue(q.hasWaitingConsumer());
868	<	waiting.setWaitingConsumer(q.getWaitingConsumerCount());
869	<	threadAssertTrue(q.offer(new Object()));
870	<	} catch (Throwable ex) {
871	<	threadUnexpectedException(ex);
872	<	}
873	<	}}).start();
874	<	assertTrue(q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS) != null);
875	<	assertTrue(q.getWaitingConsumerCount() < waiting.getWaitingConsumers());
863	>	assertEquals(q.getWaitingConsumerCount(), 0);
864	>	assertFalse(q.hasWaitingConsumer());
865	>
866	>	Thread t = newStartedThread(new CheckedRunnable() {
867	>	void realRun() throws InterruptedException {
868	>	Thread.sleep(SMALL_DELAY_MS);
869	>	threadAssertTrue(q.hasWaitingConsumer());
870	>	threadAssertEquals(q.getWaitingConsumerCount(), 1);
871	>	threadAssertTrue(q.offer(new Object()));
872	>	threadAssertFalse(q.hasWaitingConsumer());
873	>	threadAssertEquals(q.getWaitingConsumerCount(), 0);
874	>	}});
875	>
876	>	assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) != null);
877	>	assertEquals(q.getWaitingConsumerCount(), 0);
878	>	assertFalse(q.hasWaitingConsumer());
879	>	t.join();
880		}
881
882		/**
#	Line 869 | Line 892 | public class LinkedTransferQueueTest ext
892		}
893
894		/**
895	<	* transfer attempts to insert into the queue then wait until that
896	<	* object is removed via take or poll.
895	>	* transfer waits until a poll occurs. The transfered element
896	>	* is returned by this associated poll.
897		*/
898		public void testTransfer2() throws InterruptedException {
899	<	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
899	>	final LinkedTransferQueue<Integer> q
900	>	= new LinkedTransferQueue<Integer>();
901
902	<	new Thread(new Runnable() {
903	<	public void run() {
904	<	try {
905	<	q.transfer(SIZE);
906	<	threadAssertTrue(q.isEmpty());
883	<	} catch (Throwable ex) {
884	<	threadUnexpectedException(ex);
885	<	}
886	<	}}).start();
902	>	Thread t = newStartedThread(new CheckedRunnable() {
903	>	void realRun() throws InterruptedException {
904	>	q.transfer(SIZE);
905	>	threadAssertTrue(q.isEmpty());
906	>	}});
907
908		Thread.sleep(SHORT_DELAY_MS);
909		assertEquals(1, q.size());
910		assertEquals(SIZE, (int) q.poll());
911		assertTrue(q.isEmpty());
912	+	t.join();
913		}
914
915		/**
916	<	* transfer will attempt to transfer in fifo order and continue
896	<	* waiting if the element being transfered is not polled or taken
916	>	* transfer waits until a poll occurs, and then transfers in fifo order
917		*/
918		public void testTransfer3() throws InterruptedException {
919	<	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
919	>	final LinkedTransferQueue<Integer> q
920	>	= new LinkedTransferQueue<Integer>();
921
922	<	Thread first =
923	<	new Thread(new Runnable() {
924	<	public void run() {
925	<	try {
926	<	Integer i = SIZE + 1;
927	<	q.transfer(i);
928	<	threadAssertTrue(!q.contains(i));
908	<	threadAssertEquals(1, q.size());
909	<	} catch (Throwable ex) {
910	<	threadUnexpectedException(ex);
911	<	}
912	<	}});
913	<	first.start();
922	>	Thread first = newStartedThread(new CheckedRunnable() {
923	>	void realRun() throws InterruptedException {
924	>	Integer i = SIZE + 1;
925	>	q.transfer(i);
926	>	threadAssertTrue(!q.contains(i));
927	>	threadAssertEquals(1, q.size());
928	>	}});
929
930	<	Thread interruptedThread =
931	<	new Thread(new Runnable() {
932	<	public void run() {
933	<	try {
934	<	while (q.size() == 0)
935	<	Thread.yield();
921	<	q.transfer(SIZE);
922	<	threadShouldThrow();
923	<	} catch (InterruptedException success) {
924	<	} catch (Throwable ex) {
925	<	threadUnexpectedException(ex);
926	<	}
930	>	Thread interruptedThread = newStartedThread(
931	>	new CheckedInterruptedRunnable() {
932	>	void realRun() throws InterruptedException {
933	>	while (q.size() == 0)
934	>	Thread.yield();
935	>	q.transfer(SIZE);
936		}});
928	–	interruptedThread.start();
937
938		while (q.size() < 2)
939		Thread.yield();
#	Line 940 | Line 948 | public class LinkedTransferQueueTest ext
948		}
949
950		/**
951	<	* transfer will wait as long as a poll or take occurs if one does occur
952	<	* the waiting is finished and the thread that tries to poll/take
945	<	* wins in retrieving the element
951	>	* transfer waits until a poll occurs, at which point the polling
952	>	* thread returns the element
953		*/
954		public void testTransfer4() throws InterruptedException {
955		final LinkedTransferQueue q = new LinkedTransferQueue();
956	<	new Thread(new Runnable() {
957	<	public void run() {
958	<	try {
959	<	q.transfer(four);
960	<	threadAssertFalse(q.contains(four));
961	<	threadAssertEquals(three, q.poll());
962	<	} catch (Throwable ex) {
963	<	threadUnexpectedException(ex);
964	<	}
958	<	}}).start();
959	<	Thread.sleep(MEDIUM_DELAY_MS);
956	>
957	>	Thread t = newStartedThread(new CheckedRunnable() {
958	>	void realRun() throws InterruptedException {
959	>	q.transfer(four);
960	>	threadAssertFalse(q.contains(four));
961	>	threadAssertEquals(three, q.poll());
962	>	}});
963	>
964	>	Thread.sleep(SHORT_DELAY_MS);
965		assertTrue(q.offer(three));
966		assertEquals(four, q.poll());
967	+	t.join();
968	+	}
969	+
970	+	/**
971	+	* transfer waits until a take occurs. The transfered element
972	+	* is returned by this associated take.
973	+	*/
974	+	public void testTransfer5() throws InterruptedException {
975	+	final LinkedTransferQueue<Integer> q
976	+	= new LinkedTransferQueue<Integer>();
977	+
978	+	Thread t = newStartedThread(new CheckedRunnable() {
979	+	void realRun() throws InterruptedException {
980	+	q.transfer(SIZE);
981	+	checkEmpty(q);
982	+	}});
983	+
984	+	Thread.sleep(SHORT_DELAY_MS);
985	+	assertEquals(SIZE, (int) q.take());
986	+	checkEmpty(q);
987	+	t.join();
988		}
989
990		/**
#	Line 968 | Line 994 | public class LinkedTransferQueueTest ext
994		try {
995		final LinkedTransferQueue q = new LinkedTransferQueue();
996		q.tryTransfer(null);
997	<	this.shouldThrow();
997	>	shouldThrow();
998		} catch (NullPointerException ex) {
999		}
1000		}
#	Line 977 | Line 1003 | public class LinkedTransferQueueTest ext
1003		* tryTransfer returns false and does not enqueue if there are no
1004		* consumers waiting to poll or take.
1005		*/
1006	<	public void testTryTransfer2() {
1006	>	public void testTryTransfer2() throws InterruptedException {
1007		final LinkedTransferQueue q = new LinkedTransferQueue();
1008		assertFalse(q.tryTransfer(new Object()));
1009		assertFalse(q.hasWaitingConsumer());
1010	<	assertTrue(q.isEmpty());
985	<	assertEquals(0, q.size());
1010	>	checkEmpty(q);
1011		}
1012
1013		/**
#	Line 992 | Line 1017 | public class LinkedTransferQueueTest ext
1017		public void testTryTransfer3() throws InterruptedException {
1018		final Object hotPotato = new Object();
1019		final LinkedTransferQueue q = new LinkedTransferQueue();
1020	<	new Thread(new Runnable() {
1021	<	public void run() {
1022	<	try {
1023	<	while (! q.hasWaitingConsumer())
1024	<	Thread.yield();
1025	<	threadAssertTrue(q.hasWaitingConsumer());
1026	<	threadAssertTrue(q.isEmpty());
1027	<	threadAssertTrue(q.size() == 0);
1028	<	threadAssertTrue(q.tryTransfer(hotPotato));
1029	<	} catch (Throwable ex) {
1030	<	threadUnexpectedException(ex);
1031	<	}
1032	<	}}).start();
1033	<	assertTrue(q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS) == hotPotato);
1009	<	assertTrue(q.isEmpty());
1020	>
1021	>	Thread t = newStartedThread(new CheckedRunnable() {
1022	>	void realRun() {
1023	>	while (! q.hasWaitingConsumer())
1024	>	Thread.yield();
1025	>	threadAssertTrue(q.hasWaitingConsumer());
1026	>	threadAssertTrue(q.isEmpty());
1027	>	threadAssertTrue(q.size() == 0);
1028	>	threadAssertTrue(q.tryTransfer(hotPotato));
1029	>	}});
1030	>
1031	>	assertTrue(q.poll(MEDIUM_DELAY_MS, MILLISECONDS) == hotPotato);
1032	>	checkEmpty(q);
1033	>	t.join();
1034		}
1035
1036		/**
#	Line 1016 | Line 1040 | public class LinkedTransferQueueTest ext
1040		public void testTryTransfer4() throws InterruptedException {
1041		final Object hotPotato = new Object();
1042		final LinkedTransferQueue q = new LinkedTransferQueue();
1043	<	new Thread(new Runnable() {
1044	<	public void run() {
1045	<	try {
1046	<	while (! q.hasWaitingConsumer())
1047	<	Thread.yield();
1048	<	threadAssertTrue(q.hasWaitingConsumer());
1049	<	threadAssertTrue(q.isEmpty());
1050	<	threadAssertTrue(q.size() == 0);
1051	<	threadAssertTrue(q.tryTransfer(hotPotato));
1052	<	} catch (Throwable ex) {
1053	<	threadUnexpectedException(ex);
1030	<	}
1031	<	}}).start();
1043	>
1044	>	Thread t = newStartedThread(new CheckedRunnable() {
1045	>	void realRun() {
1046	>	while (! q.hasWaitingConsumer())
1047	>	Thread.yield();
1048	>	threadAssertTrue(q.hasWaitingConsumer());
1049	>	threadAssertTrue(q.isEmpty());
1050	>	threadAssertTrue(q.size() == 0);
1051	>	threadAssertTrue(q.tryTransfer(hotPotato));
1052	>	}});
1053	>
1054		assertTrue(q.take() == hotPotato);
1055	<	assertTrue(q.isEmpty());
1055	>	checkEmpty(q);
1056	>	t.join();
1057		}
1058
1059		/**
1060	<	* tryTransfer waits the amount given if interrupted, show an
1061	<	* interrupted exception
1060	>	* tryTransfer waits the amount given if interrupted, and
1061	>	* throws interrupted exception
1062		*/
1063		public void testTryTransfer5() throws InterruptedException {
1064		final LinkedTransferQueue q = new LinkedTransferQueue();
1065	<	Thread toInterrupt = new Thread(new Runnable() {
1066	<	public void run() {
1067	<	try {
1068	<	q.tryTransfer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS);
1046	<	threadShouldThrow();
1047	<	} catch (InterruptedException success) {
1048	<	} catch (Throwable ex) {
1049	<	threadUnexpectedException(ex);
1050	<	}
1065	>
1066	>	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
1067	>	void realRun() throws InterruptedException {
1068	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
1069		}});
1070	<	toInterrupt.start();
1070	>
1071		Thread.sleep(SMALL_DELAY_MS);
1072		toInterrupt.interrupt();
1073	+	toInterrupt.join();
1074		}
1075
1076		/**
#	Line 1059 | Line 1078 | public class LinkedTransferQueueTest ext
1078		*/
1079		public void testTryTransfer6() throws InterruptedException {
1080		final LinkedTransferQueue q = new LinkedTransferQueue();
1081	<	new Thread(new Runnable() {
1082	<	public void run() {
1083	<	try {
1084	<	threadAssertFalse(q.tryTransfer(new Object(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
1085	<	} catch (Throwable ex) {
1086	<	threadUnexpectedException(ex);
1087	<	}
1088	<	}}).start();
1089	<	Thread.sleep(LONG_DELAY_MS);
1090	<	assertTrue(q.isEmpty());
1081	>
1082	>	Thread t = newStartedThread(new CheckedRunnable() {
1083	>	void realRun() throws InterruptedException {
1084	>	threadAssertFalse
1085	>	(q.tryTransfer(new Object(),
1086	>	SHORT_DELAY_MS, MILLISECONDS));
1087	>	}});
1088	>
1089	>	Thread.sleep(SMALL_DELAY_MS);
1090	>	checkEmpty(q);
1091	>	t.join();
1092		}
1093
1094		/**
#	Line 1078 | Line 1098 | public class LinkedTransferQueueTest ext
1098		public void testTryTransfer7() throws InterruptedException {
1099		final LinkedTransferQueue q = new LinkedTransferQueue();
1100		assertTrue(q.offer(four));
1101	<	new Thread(new Runnable() {
1102	<	public void run() {
1103	<	try {
1104	<	threadAssertTrue(q.tryTransfer(five, LONG_DELAY_MS, TimeUnit.MILLISECONDS));
1105	<	threadAssertTrue(q.isEmpty());
1106	<	} catch (Throwable ex) {
1107	<	threadUnexpectedException(ex);
1108	<	}
1089	<	}}).start();
1101	>
1102	>	Thread t = newStartedThread(new CheckedRunnable() {
1103	>	void realRun() throws InterruptedException {
1104	>	threadAssertTrue(q.tryTransfer(five,
1105	>	MEDIUM_DELAY_MS, MILLISECONDS));
1106	>	threadAssertTrue(q.isEmpty());
1107	>	}});
1108	>
1109		Thread.sleep(SHORT_DELAY_MS);
1110		assertEquals(2, q.size());
1111		assertEquals(four, q.poll());
1112		assertEquals(five, q.poll());
1113	<	assertTrue(q.isEmpty());
1113	>	checkEmpty(q);
1114	>	t.join();
1115		}
1116
1117		/**
#	Line 1102 | Line 1122 | public class LinkedTransferQueueTest ext
1122		final LinkedTransferQueue q = new LinkedTransferQueue();
1123		assertTrue(q.offer(four));
1124		assertEquals(1, q.size());
1125	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
1125	>	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1126		assertEquals(1, q.size());
1127		assertEquals(four, q.poll());
1108	–	threadAssertTrue(q.isEmpty());
1128		assertNull(q.poll());
1129	+	checkEmpty(q);
1130		}
1131
1132		private LinkedTransferQueue<Integer> populatedQueue(int n) {
#	Line 1120 | Line 1140 | public class LinkedTransferQueueTest ext
1140		assertFalse(q.isEmpty());
1141		return q;
1142		}
1123	–
1124	–	private static class ConsumerObserver {
1125	–
1126	–	private int waitingConsumers;
1127	–
1128	–	private ConsumerObserver() {
1129	–	}
1130	–
1131	–	private void setWaitingConsumer(int i) {
1132	–	this.waitingConsumers = i;
1133	–	}
1134	–
1135	–	private int getWaitingConsumers() {
1136	–	return waitingConsumers;
1137	–	}
1138	–	}
1143		}

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