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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.6 by dl, Sun Aug 2 12:31:24 2009 UTC vs.
Revision 1.16 by jsr166, Sat Nov 21 19:11:53 2009 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 junit.framework.Test;
22		import junit.framework.TestSuite;
23
24	+	@SuppressWarnings({"unchecked", "rawtypes"})
25		public class LinkedTransferQueueTest extends JSR166TestCase {
26
27		public static void main(String[] args) {
#	Line 30 | Line 32 | public class LinkedTransferQueueTest ext
32		return new TestSuite(LinkedTransferQueueTest.class);
33		}
34
35	+	void checkEmpty(LinkedTransferQueue q) throws InterruptedException {
36	+	assertTrue(q.isEmpty());
37	+	assertEquals(0, q.size());
38	+	assertNull(q.peek());
39	+	assertNull(q.poll());
40	+	assertNull(q.poll(0, MILLISECONDS));
41	+	assertEquals(q.toString(), "[]");
42	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
43	+	assertFalse(q.iterator().hasNext());
44	+	try {
45	+	q.element();
46	+	shouldThrow();
47	+	} catch (NoSuchElementException success) {
48	+	}
49	+	try {
50	+	q.iterator().next();
51	+	shouldThrow();
52	+	} catch (NoSuchElementException success) {
53	+	}
54	+	try {
55	+	q.remove();
56	+	shouldThrow();
57	+	} catch (NoSuchElementException success) {
58	+	}
59	+	}
60	+
61		/**
62	<	* Constructor builds new queue with size being zero and empty being true
62	>	* Constructor builds new queue with size being zero and empty
63	>	* being true
64		*/
65		public void testConstructor1() {
66		assertEquals(0, new LinkedTransferQueue().size());
#	Line 39 | Line 68 | public class LinkedTransferQueueTest ext
68		}
69
70		/**
71	<	* Initializing constructor with null collection throws NullPointerException
71	>	* Initializing constructor with null collection throws
72	>	* NullPointerException
73		*/
74		public void testConstructor2() {
75		try {
#	Line 50 | Line 80 | public class LinkedTransferQueueTest ext
80		}
81
82		/**
83	<	* Initializing from Collection of null elements throws NullPointerException
83	>	* Initializing from Collection of null elements throws
84	>	* NullPointerException
85		*/
86		public void testConstructor3() {
87		try {
88		Integer[] ints = new Integer[SIZE];
89	<	LinkedTransferQueue q = new LinkedTransferQueue(Arrays.asList(ints));
89	>	new LinkedTransferQueue(Arrays.asList(ints));
90		shouldThrow();
91		} catch (NullPointerException success) {
92		}
#	Line 71 | Line 102 | public class LinkedTransferQueueTest ext
102		for (int i = 0; i < SIZE - 1; ++i) {
103		ints[i] = i;
104		}
105	<	LinkedTransferQueue q = new LinkedTransferQueue(Arrays.asList(ints));
105	>	new LinkedTransferQueue(Arrays.asList(ints));
106		shouldThrow();
107		} catch (NullPointerException success) {
108		}
#	Line 81 | Line 112 | public class LinkedTransferQueueTest ext
112		* Queue contains all elements of the collection it is initialized by
113		*/
114		public void testConstructor5() {
115	<	try {
116	<	Integer[] ints = new Integer[SIZE];
117	<	for (int i = 0; i < SIZE; ++i) {
118	<	ints[i] = i;
119	<	}
120	<	LinkedTransferQueue q = new LinkedTransferQueue(Arrays.asList(ints));
121	<	for (int i = 0; i < SIZE; ++i) {
122	<	assertEquals(ints[i], q.poll());
123	<	}
124	<	} finally {
115	>	Integer[] ints = new Integer[SIZE];
116	>	for (int i = 0; i < SIZE; ++i) {
117	>	ints[i] = i;
118	>	}
119	>	List intList = Arrays.asList(ints);
120	>	LinkedTransferQueue q
121	>	= new LinkedTransferQueue(intList);
122	>	assertEquals(q.size(), intList.size());
123	>	assertEquals(q.toString(), intList.toString());
124	>	assertTrue(Arrays.equals(q.toArray(),
125	>	intList.toArray()));
126	>	assertTrue(Arrays.equals(q.toArray(new Object[0]),
127	>	intList.toArray(new Object[0])));
128	>	assertTrue(Arrays.equals(q.toArray(new Object[SIZE]),
129	>	intList.toArray(new Object[SIZE])));
130	>	for (int i = 0; i < SIZE; ++i) {
131	>	assertEquals(ints[i], q.poll());
132		}
133		}
134
135		/**
136	<	* Remaining capacity never decrease nor increase on add or remove
136	>	* remainingCapacity() always returns Integer.MAX_VALUE
137		*/
138		public void testRemainingCapacity() {
139		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
#	Line 173 | Line 211 | public class LinkedTransferQueueTest ext
211		}
212
213		/**
214	<	* addAll of a collection with any null elements throws NullPointerException after
215	<	* possibly adding some elements
214	>	* addAll of a collection with any null elements throws
215	>	* NullPointerException after possibly adding some elements
216		*/
217		public void testAddAll3() {
218		try {
#	Line 223 | 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		}
229	–	assertEquals(q.size(), SIZE);
268		}
269
270		/**
#	Line 244 | Line 282 | public class LinkedTransferQueueTest ext
282		*/
283		public void testTakeFromEmpty() throws InterruptedException {
284		final LinkedTransferQueue q = new LinkedTransferQueue();
285	<	Thread t = new Thread(new Runnable() {
286	<	public void run() {
287	<	try {
250	<	q.take();
251	<	threadShouldThrow();
252	<	} catch (InterruptedException success) {
253	<	} catch (Throwable ex) {
254	<	threadUnexpectedException(ex);
255	<	}
285	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
286	>	void realRun() throws InterruptedException {
287	>	q.take();
288		}});
257	–	t.start();
289		Thread.sleep(SHORT_DELAY_MS);
290		t.interrupt();
291		t.join();
#	Line 264 | Line 295 | public class LinkedTransferQueueTest ext
295		* Take removes existing elements until empty, then blocks interruptibly
296		*/
297		public void testBlockingTake() throws InterruptedException {
298	<	Thread t = new Thread(new Runnable() {
299	<	public void run() {
300	<	try {
301	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
302	<	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);
298	>	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
299	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
300	>	void realRun() throws InterruptedException {
301	>	for (int i = 0; i < SIZE; ++i) {
302	>	threadAssertEquals(i, (int) q.take());
303		}
304	+	q.take();
305		}});
306	<	t.start();
282	<	Thread.sleep(SHORT_DELAY_MS);
306	>	Thread.sleep(SMALL_DELAY_MS);
307		t.interrupt();
308		t.join();
309	+	checkEmpty(q);
310		}
311
312		/**
313		* poll succeeds unless empty
314		*/
315	<	public void testPoll() {
315	>	public void testPoll() throws InterruptedException {
316		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
317		for (int i = 0; i < SIZE; ++i) {
318		assertEquals(i, (int) q.poll());
319		}
320		assertNull(q.poll());
321	+	checkEmpty(q);
322		}
323
324		/**
#	Line 301 | Line 327 | public class LinkedTransferQueueTest ext
327		public void testTimedPoll0() throws InterruptedException {
328		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
329		for (int i = 0; i < SIZE; ++i) {
330	<	assertEquals(i, (int) q.poll(0, TimeUnit.MILLISECONDS));
330	>	assertEquals(i, (int) q.poll(0, MILLISECONDS));
331		}
332	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
332	>	assertNull(q.poll(0, MILLISECONDS));
333	>	checkEmpty(q);
334		}
335
336		/**
#	Line 312 | Line 339 | public class LinkedTransferQueueTest ext
339		public void testTimedPoll() throws InterruptedException {
340		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
341		for (int i = 0; i < SIZE; ++i) {
342	<	assertEquals(i, (int) q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
342	>	long t0 = System.nanoTime();
343	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
344	>	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
345	>	assertTrue(millisElapsed < SMALL_DELAY_MS);
346		}
347	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
347	>	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
348	>	checkEmpty(q);
349		}
350
351		/**
#	Line 322 | Line 353 | public class LinkedTransferQueueTest ext
353		* returning timeout status
354		*/
355		public void testInterruptedTimedPoll() throws InterruptedException {
356	<	Thread t = new Thread(new Runnable() {
357	<	public void run() {
358	<	try {
359	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
360	<	for (int i = 0; i < SIZE; ++i) {
361	<	threadAssertEquals(i, (int) q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
362	<	}
363	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
364	<	} catch (InterruptedException success) {
334	<	} catch (Throwable ex) {
335	<	threadUnexpectedException(ex);
356	>	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
357	>	Thread t = newStartedThread(new CheckedRunnable() {
358	>	void realRun() throws InterruptedException {
359	>	for (int i = 0; i < SIZE; ++i) {
360	>	long t0 = System.nanoTime();
361	>	threadAssertEquals(i, (int) q.poll(LONG_DELAY_MS,
362	>	MILLISECONDS));
363	>	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
364	>	assertTrue(millisElapsed < SMALL_DELAY_MS);
365		}
366	+	try {
367	+	q.poll(LONG_DELAY_MS, MILLISECONDS);
368	+	} catch (InterruptedException success) {}
369		}});
370	<	t.start();
339	<	Thread.sleep(SHORT_DELAY_MS);
370	>	Thread.sleep(SMALL_DELAY_MS);
371		t.interrupt();
372		t.join();
373	+	checkEmpty(q);
374		}
375
376		/**
#	Line 347 | Line 379 | public class LinkedTransferQueueTest ext
379		*/
380		public void testTimedPollWithOffer() throws InterruptedException {
381		final LinkedTransferQueue q = new LinkedTransferQueue();
382	<	Thread t = new Thread(new Runnable() {
383	<	public void run() {
384	<	try {
385	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
386	<	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	<	}
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);
387		}});
362	–	t.start();
388		Thread.sleep(SMALL_DELAY_MS);
389	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
389	>	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
390		t.interrupt();
391		t.join();
392		}
#	Line 369 | Line 394 | public class LinkedTransferQueueTest ext
394		/**
395		* peek returns next element, or null if empty
396		*/
397	<	public void testPeek() {
397	>	public void testPeek() throws InterruptedException {
398		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
399		for (int i = 0; i < SIZE; ++i) {
400		assertEquals(i, (int) q.peek());
#	Line 378 | Line 403 | public class LinkedTransferQueueTest ext
403		i != (int) q.peek());
404		}
405		assertNull(q.peek());
406	+	checkEmpty(q);
407		}
408
409		/**
410		* element returns next element, or throws NoSuchElementException if empty
411		*/
412	<	public void testElement() {
412	>	public void testElement() throws InterruptedException {
413		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
414		for (int i = 0; i < SIZE; ++i) {
415		assertEquals(i, (int) q.element());
#	Line 394 | Line 420 | public class LinkedTransferQueueTest ext
420		shouldThrow();
421		} catch (NoSuchElementException success) {
422		}
423	+	checkEmpty(q);
424		}
425
426		/**
427		* remove removes next element, or throws NoSuchElementException if empty
428		*/
429	<	public void testRemove() {
429	>	public void testRemove() throws InterruptedException {
430		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
431		for (int i = 0; i < SIZE; ++i) {
432		assertEquals(i, (int) q.remove());
#	Line 409 | Line 436 | public class LinkedTransferQueueTest ext
436		shouldThrow();
437		} catch (NoSuchElementException success) {
438		}
439	+	checkEmpty(q);
440		}
441
442		/**
443		* remove(x) removes x and returns true if present
444		*/
445	<	public void testRemoveElement() {
445	>	public void testRemoveElement() throws InterruptedException {
446		LinkedTransferQueue q = populatedQueue(SIZE);
447		for (int i = 1; i < SIZE; i += 2) {
448		assertTrue(q.remove(i));
#	Line 423 | Line 451 | public class LinkedTransferQueueTest ext
451		assertTrue(q.remove(i));
452		assertFalse(q.remove(i + 1));
453		}
454	<	assertTrue(q.isEmpty());
454	>	checkEmpty(q);
455		}
456
457		/**
#	Line 436 | Line 464 | public class LinkedTransferQueueTest ext
464		assertTrue(q.remove(one));
465		assertTrue(q.remove(two));
466		assertTrue(q.add(three));
467	<	assertTrue(q.take() != null);
467	>	assertTrue(q.take() == three);
468		}
469
470		/**
#	Line 454 | Line 482 | public class LinkedTransferQueueTest ext
482		/**
483		* clear removes all elements
484		*/
485	<	public void testClear() {
485	>	public void testClear() throws InterruptedException {
486		LinkedTransferQueue q = populatedQueue(SIZE);
487		q.clear();
488	<	assertTrue(q.isEmpty());
461	<	assertEquals(0, q.size());
488	>	checkEmpty(q);
489		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
490		q.add(one);
491		assertFalse(q.isEmpty());
492	+	assertEquals(1, q.size());
493		assertTrue(q.contains(one));
494		q.clear();
495	<	assertTrue(q.isEmpty());
495	>	checkEmpty(q);
496		}
497
498		/**
#	Line 482 | Line 510 | public class LinkedTransferQueueTest ext
510		}
511
512		/**
513	<	* retainAll(c) retains only those elements of c and reports true if changed
513	>	* retainAll(c) retains only those elements of c and reports true
514	>	* if changed
515		*/
516		public void testRetainAll() {
517		LinkedTransferQueue q = populatedQueue(SIZE);
#	Line 501 | Line 530 | public class LinkedTransferQueueTest ext
530		}
531
532		/**
533	<	* removeAll(c) removes only those elements of c and reports true if changed
533	>	* removeAll(c) removes only those elements of c and reports true
534	>	* if changed
535		*/
536		public void testRemoveAll() {
537		for (int i = 1; i < SIZE; ++i) {
#	Line 516 | Line 546 | public class LinkedTransferQueueTest ext
546		}
547
548		/**
549	<	* toArray contains all elements
549	>	* toArray() contains all elements
550		*/
551		public void testToArray() throws InterruptedException {
552		LinkedTransferQueue q = populatedQueue(SIZE);
#	Line 551 | Line 581 | public class LinkedTransferQueueTest ext
581		}
582
583		/**
584	<	* toArray with incompatible array type throws CCE
584	>	* toArray(incompatible array type) throws CCE
585		*/
586		public void testToArray1_BadArg() {
587		try {
#	Line 568 | Line 598 | public class LinkedTransferQueueTest ext
598		public void testIterator() throws InterruptedException {
599		LinkedTransferQueue q = populatedQueue(SIZE);
600		Iterator it = q.iterator();
601	+	int i = 0;
602		while (it.hasNext()) {
603	<	assertEquals(it.next(), q.take());
603	>	assertEquals(it.next(), i++);
604		}
605	+	assertEquals(i, SIZE);
606		}
607
608		/**
609	<	* iterator.remove removes current element
609	>	* iterator.remove() removes current element
610		*/
611		public void testIteratorRemove() {
612		final LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 596 | Line 628 | public class LinkedTransferQueueTest ext
628		* iterator ordering is FIFO
629		*/
630		public void testIteratorOrdering() {
631	<	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
631	>	final LinkedTransferQueue<Integer> q
632	>	= new LinkedTransferQueue<Integer>();
633		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
634		q.add(one);
635		q.add(two);
#	Line 643 | Line 676 | public class LinkedTransferQueueTest ext
676		q.add(one);
677		q.add(two);
678		ExecutorService executor = Executors.newFixedThreadPool(2);
679	<	executor.execute(new Runnable() {
680	<	public void run() {
681	<	try {
682	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
683	<	} catch (Throwable ex) {
651	<	threadUnexpectedException(ex);
652	<	}
679	>
680	>	executor.execute(new CheckedRunnable() {
681	>	void realRun() {
682	>	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS,
683	>	MILLISECONDS));
684		}});
685
686	<	executor.execute(new Runnable() {
687	<	public void run() {
688	<	try {
689	<	Thread.sleep(SMALL_DELAY_MS);
659	<	threadAssertEquals(one, q.take());
660	<	} catch (Throwable ex) {
661	<	threadUnexpectedException(ex);
662	<	}
686	>	executor.execute(new CheckedRunnable() {
687	>	void realRun() throws InterruptedException {
688	>	Thread.sleep(SMALL_DELAY_MS);
689	>	threadAssertEquals(one, q.take());
690		}});
691
692		joinPool(executor);
693		}
694
695		/**
696	<	* poll retrieves elements across Executor threads
696	>	* timed poll retrieves elements across Executor threads
697		*/
698		public void testPollInExecutor() {
699		final LinkedTransferQueue q = new LinkedTransferQueue();
700		ExecutorService executor = Executors.newFixedThreadPool(2);
701	<	executor.execute(new Runnable() {
702	<	public void run() {
703	<	try {
704	<	threadAssertNull(q.poll());
705	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
706	<	threadAssertTrue(q.isEmpty());
707	<	} catch (Throwable  ex) {
681	<	threadUnexpectedException(ex);
682	<	}
701	>
702	>	executor.execute(new CheckedRunnable() {
703	>	void realRun() throws InterruptedException {
704	>	threadAssertNull(q.poll());
705	>	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS,
706	>	MILLISECONDS));
707	>	threadAssertTrue(q.isEmpty());
708		}});
709
710	<	executor.execute(new Runnable() {
711	<	public void run() {
712	<	try {
713	<	Thread.sleep(SMALL_DELAY_MS);
689	<	q.put(one);
690	<	} catch (Throwable ex) {
691	<	threadUnexpectedException(ex);
692	<	}
710	>	executor.execute(new CheckedRunnable() {
711	>	void realRun() throws InterruptedException {
712	>	Thread.sleep(SMALL_DELAY_MS);
713	>	q.put(one);
714		}});
715
716		joinPool(executor);
#	Line 702 | Line 723 | public class LinkedTransferQueueTest ext
723		LinkedTransferQueue q = populatedQueue(SIZE);
724
725		ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
726	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
726	>	ObjectOutputStream out
727	>	= new ObjectOutputStream(new BufferedOutputStream(bout));
728		out.writeObject(q);
729		out.close();
730
731	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
732	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
731	>	ByteArrayInputStream bin
732	>	= new ByteArrayInputStream(bout.toByteArray());
733	>	ObjectInputStream in
734	>	= new ObjectInputStream(new BufferedInputStream(bin));
735		LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
736
737		assertEquals(q.size(), r.size());
#	Line 767 | Line 791 | public class LinkedTransferQueueTest ext
791		}
792
793		/**
794	<	* drainTo empties full queue, unblocking a waiting put.
794	>	* drainTo(c) empties full queue, unblocking a waiting put.
795		*/
796		public void testDrainToWithActivePut() throws InterruptedException {
797		final LinkedTransferQueue q = populatedQueue(SIZE);
798	<	Thread t = new Thread(new Runnable() {
799	<	public void run() {
800	<	try {
777	<	q.put(SIZE + 1);
778	<	} catch (Throwable ex) {
779	<	threadUnexpectedException(ex);
780	<	}
798	>	Thread t = newStartedThread(new CheckedRunnable() {
799	>	void realRun() {
800	>	q.put(SIZE + 1);
801		}});
782	–	t.start();
802		ArrayList l = new ArrayList();
803		q.drainTo(l);
804		assertTrue(l.size() >= SIZE);
#	Line 796 | Line 815 | public class LinkedTransferQueueTest ext
815		public void testDrainToNullN() {
816		LinkedTransferQueue q = populatedQueue(SIZE);
817		try {
818	<	q.drainTo(null, 0);
818	>	q.drainTo(null, SIZE);
819		shouldThrow();
820		} catch (NullPointerException success) {
821		}
#	Line 808 | Line 827 | public class LinkedTransferQueueTest ext
827		public void testDrainToSelfN() {
828		LinkedTransferQueue q = populatedQueue(SIZE);
829		try {
830	<	q.drainTo(q, 0);
830	>	q.drainTo(q, SIZE);
831		shouldThrow();
832		} catch (IllegalArgumentException success) {
833		}
#	Line 837 | Line 856 | public class LinkedTransferQueueTest ext
856		}
857
858		/**
859	<	* poll and take decrement the waiting consumer count
859	>	* timed poll() or take() increments the waiting consumer count;
860	>	* offer(e) decrements the waiting consumer count
861		*/
862		public void testWaitingConsumer() throws InterruptedException {
863		final LinkedTransferQueue q = new LinkedTransferQueue();
864	<	final ConsumerObserver waiting = new ConsumerObserver();
865	<	new Thread(new Runnable() {
866	<	public void run() {
867	<	try {
868	<	threadAssertTrue(q.hasWaitingConsumer());
869	<	waiting.setWaitingConsumer(q.getWaitingConsumerCount());
870	<	threadAssertTrue(q.offer(new Object()));
871	<	} catch (Throwable ex) {
872	<	threadUnexpectedException(ex);
873	<	}
874	<	}}).start();
875	<	assertTrue(q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS) != null);
876	<	assertTrue(q.getWaitingConsumerCount() < waiting.getWaitingConsumers());
864	>	assertEquals(q.getWaitingConsumerCount(), 0);
865	>	assertFalse(q.hasWaitingConsumer());
866	>
867	>	Thread t = newStartedThread(new CheckedRunnable() {
868	>	void realRun() throws InterruptedException {
869	>	Thread.sleep(SMALL_DELAY_MS);
870	>	threadAssertTrue(q.hasWaitingConsumer());
871	>	threadAssertEquals(q.getWaitingConsumerCount(), 1);
872	>	threadAssertTrue(q.offer(new Object()));
873	>	threadAssertFalse(q.hasWaitingConsumer());
874	>	threadAssertEquals(q.getWaitingConsumerCount(), 0);
875	>	}});
876	>
877	>	assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) != null);
878	>	assertEquals(q.getWaitingConsumerCount(), 0);
879	>	assertFalse(q.hasWaitingConsumer());
880	>	t.join();
881		}
882
883		/**
#	Line 864 | Line 888 | public class LinkedTransferQueueTest ext
888		LinkedTransferQueue q = new LinkedTransferQueue();
889		q.transfer(null);
890		shouldThrow();
891	<	} catch (NullPointerException ex) {
868	<	}
891	>	} catch (NullPointerException success) {}
892		}
893
894		/**
#	Line 873 | Line 896 | public class LinkedTransferQueueTest ext
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 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));
907	<	threadAssertEquals(1, q.size());
908	<	} catch (Throwable ex) {
909	<	threadUnexpectedException(ex);
910	<	}
911	<	}});
912	<	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();
920	<	q.transfer(SIZE);
921	<	threadShouldThrow();
922	<	} catch (InterruptedException success) {
923	<	} catch (Throwable ex) {
924	<	threadUnexpectedException(ex);
925	<	}
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		}});
927	–	interruptedThread.start();
937
938		while (q.size() < 2)
939		Thread.yield();
#	Line 944 | Line 953 | public class LinkedTransferQueueTest ext
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	<	}
956	<	}}).start();
957	<	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		/**
#	Line 964 | Line 972 | public class LinkedTransferQueueTest ext
972		* is returned by this associated take.
973		*/
974		public void testTransfer5() throws InterruptedException {
975	<	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
975	>	final LinkedTransferQueue<Integer> q
976	>	= new LinkedTransferQueue<Integer>();
977
978	<	new Thread(new Runnable() {
979	<	public void run() {
980	<	try {
981	<	q.transfer(SIZE);
982	<	threadAssertTrue(q.isEmpty());
974	<	} catch (Throwable ex) {
975	<	threadUnexpectedException(ex);
976	<	}
977	<	}}).start();
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	<	assertTrue(q.isEmpty());
986	>	checkEmpty(q);
987	>	t.join();
988		}
989
990		/**
#	Line 988 | Line 994 | public class LinkedTransferQueueTest ext
994		try {
995		final LinkedTransferQueue q = new LinkedTransferQueue();
996		q.tryTransfer(null);
997	<	this.shouldThrow();
998	<	} catch (NullPointerException ex) {
993	<	}
997	>	shouldThrow();
998	>	} catch (NullPointerException success) {}
999		}
1000
1001		/**
1002		* tryTransfer returns false and does not enqueue if there are no
1003		* consumers waiting to poll or take.
1004		*/
1005	<	public void testTryTransfer2() {
1005	>	public void testTryTransfer2() throws InterruptedException {
1006		final LinkedTransferQueue q = new LinkedTransferQueue();
1007		assertFalse(q.tryTransfer(new Object()));
1008		assertFalse(q.hasWaitingConsumer());
1009	<	assertTrue(q.isEmpty());
1005	<	assertEquals(0, q.size());
1009	>	checkEmpty(q);
1010		}
1011
1012		/**
#	Line 1012 | Line 1016 | public class LinkedTransferQueueTest ext
1016		public void testTryTransfer3() throws InterruptedException {
1017		final Object hotPotato = new Object();
1018		final LinkedTransferQueue q = new LinkedTransferQueue();
1019	<	new Thread(new Runnable() {
1020	<	public void run() {
1021	<	try {
1022	<	while (! q.hasWaitingConsumer())
1023	<	Thread.yield();
1024	<	threadAssertTrue(q.hasWaitingConsumer());
1025	<	threadAssertTrue(q.isEmpty());
1026	<	threadAssertTrue(q.size() == 0);
1027	<	threadAssertTrue(q.tryTransfer(hotPotato));
1028	<	} catch (Throwable ex) {
1029	<	threadUnexpectedException(ex);
1030	<	}
1031	<	}}).start();
1032	<	assertTrue(q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS) == hotPotato);
1029	<	assertTrue(q.isEmpty());
1019	>
1020	>	Thread t = newStartedThread(new CheckedRunnable() {
1021	>	void realRun() {
1022	>	while (! q.hasWaitingConsumer())
1023	>	Thread.yield();
1024	>	threadAssertTrue(q.hasWaitingConsumer());
1025	>	threadAssertTrue(q.isEmpty());
1026	>	threadAssertTrue(q.size() == 0);
1027	>	threadAssertTrue(q.tryTransfer(hotPotato));
1028	>	}});
1029	>
1030	>	assertTrue(q.poll(MEDIUM_DELAY_MS, MILLISECONDS) == hotPotato);
1031	>	checkEmpty(q);
1032	>	t.join();
1033		}
1034
1035		/**
#	Line 1036 | Line 1039 | public class LinkedTransferQueueTest ext
1039		public void testTryTransfer4() throws InterruptedException {
1040		final Object hotPotato = new Object();
1041		final LinkedTransferQueue q = new LinkedTransferQueue();
1042	<	new Thread(new Runnable() {
1043	<	public void run() {
1044	<	try {
1045	<	while (! q.hasWaitingConsumer())
1046	<	Thread.yield();
1047	<	threadAssertTrue(q.hasWaitingConsumer());
1048	<	threadAssertTrue(q.isEmpty());
1049	<	threadAssertTrue(q.size() == 0);
1050	<	threadAssertTrue(q.tryTransfer(hotPotato));
1051	<	} catch (Throwable ex) {
1052	<	threadUnexpectedException(ex);
1050	<	}
1051	<	}}).start();
1042	>
1043	>	Thread t = newStartedThread(new CheckedRunnable() {
1044	>	void realRun() {
1045	>	while (! q.hasWaitingConsumer())
1046	>	Thread.yield();
1047	>	threadAssertTrue(q.hasWaitingConsumer());
1048	>	threadAssertTrue(q.isEmpty());
1049	>	threadAssertTrue(q.size() == 0);
1050	>	threadAssertTrue(q.tryTransfer(hotPotato));
1051	>	}});
1052	>
1053		assertTrue(q.take() == hotPotato);
1054	<	assertTrue(q.isEmpty());
1054	>	checkEmpty(q);
1055	>	t.join();
1056		}
1057
1058		/**
#	Line 1059 | Line 1061 | public class LinkedTransferQueueTest ext
1061		*/
1062		public void testTryTransfer5() throws InterruptedException {
1063		final LinkedTransferQueue q = new LinkedTransferQueue();
1064	<	Thread toInterrupt = new Thread(new Runnable() {
1065	<	public void run() {
1066	<	try {
1067	<	q.tryTransfer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS);
1066	<	threadShouldThrow();
1067	<	} catch (InterruptedException success) {
1068	<	} catch (Throwable ex) {
1069	<	threadUnexpectedException(ex);
1070	<	}
1064	>
1065	>	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
1066	>	void realRun() throws InterruptedException {
1067	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
1068		}});
1069	<	toInterrupt.start();
1069	>
1070		Thread.sleep(SMALL_DELAY_MS);
1071		toInterrupt.interrupt();
1072	+	toInterrupt.join();
1073		}
1074
1075		/**
#	Line 1079 | Line 1077 | public class LinkedTransferQueueTest ext
1077		*/
1078		public void testTryTransfer6() throws InterruptedException {
1079		final LinkedTransferQueue q = new LinkedTransferQueue();
1080	<	new Thread(new Runnable() {
1081	<	public void run() {
1082	<	try {
1083	<	threadAssertFalse(q.tryTransfer(new Object(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
1084	<	} catch (Throwable ex) {
1085	<	threadUnexpectedException(ex);
1086	<	}
1087	<	}}).start();
1088	<	Thread.sleep(LONG_DELAY_MS);
1089	<	assertTrue(q.isEmpty());
1080	>
1081	>	Thread t = newStartedThread(new CheckedRunnable() {
1082	>	void realRun() throws InterruptedException {
1083	>	threadAssertFalse
1084	>	(q.tryTransfer(new Object(),
1085	>	SHORT_DELAY_MS, MILLISECONDS));
1086	>	}});
1087	>
1088	>	Thread.sleep(SMALL_DELAY_MS);
1089	>	checkEmpty(q);
1090	>	t.join();
1091		}
1092
1093		/**
#	Line 1098 | Line 1097 | public class LinkedTransferQueueTest ext
1097		public void testTryTransfer7() throws InterruptedException {
1098		final LinkedTransferQueue q = new LinkedTransferQueue();
1099		assertTrue(q.offer(four));
1100	<	new Thread(new Runnable() {
1101	<	public void run() {
1102	<	try {
1103	<	threadAssertTrue(q.tryTransfer(five, LONG_DELAY_MS, TimeUnit.MILLISECONDS));
1104	<	threadAssertTrue(q.isEmpty());
1105	<	} catch (Throwable ex) {
1106	<	threadUnexpectedException(ex);
1107	<	}
1109	<	}}).start();
1100	>
1101	>	Thread t = newStartedThread(new CheckedRunnable() {
1102	>	void realRun() throws InterruptedException {
1103	>	threadAssertTrue(q.tryTransfer(five,
1104	>	MEDIUM_DELAY_MS, MILLISECONDS));
1105	>	threadAssertTrue(q.isEmpty());
1106	>	}});
1107	>
1108		Thread.sleep(SHORT_DELAY_MS);
1109		assertEquals(2, q.size());
1110		assertEquals(four, q.poll());
1111		assertEquals(five, q.poll());
1112	<	assertTrue(q.isEmpty());
1112	>	checkEmpty(q);
1113	>	t.join();
1114		}
1115
1116		/**
#	Line 1122 | Line 1121 | public class LinkedTransferQueueTest ext
1121		final LinkedTransferQueue q = new LinkedTransferQueue();
1122		assertTrue(q.offer(four));
1123		assertEquals(1, q.size());
1124	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
1124	>	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1125		assertEquals(1, q.size());
1126		assertEquals(four, q.poll());
1128	–	threadAssertTrue(q.isEmpty());
1127		assertNull(q.poll());
1128	+	checkEmpty(q);
1129		}
1130
1131		private LinkedTransferQueue<Integer> populatedQueue(int n) {
#	Line 1140 | Line 1139 | public class LinkedTransferQueueTest ext
1139		assertFalse(q.isEmpty());
1140		return q;
1141		}
1143	–
1144	–	private static class ConsumerObserver {
1145	–
1146	–	private int waitingConsumers;
1147	–
1148	–	private ConsumerObserver() {
1149	–	}
1150	–
1151	–	private void setWaitingConsumer(int i) {
1152	–	this.waitingConsumers = i;
1153	–	}
1154	–
1155	–	private int getWaitingConsumers() {
1156	–	return waitingConsumers;
1157	–	}
1158	–	}
1142		}

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