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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.7 by jsr166, Mon Aug 3 19:07:51 2009 UTC vs.
Revision 1.27 by jsr166, Thu Oct 28 17:22:13 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(LinkedTransferQueue q) throws InterruptedException {
44	>	assertTrue(q.isEmpty());
45	>	assertEquals(0, q.size());
46	>	assertNull(q.peek());
47	>	assertNull(q.poll());
48	>	assertNull(q.poll(0, MILLISECONDS));
49	>	assertEquals(q.toString(), "[]");
50	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
51	>	assertFalse(q.iterator().hasNext());
52	>	try {
53	>	q.element();
54	>	shouldThrow();
55	>	} catch (NoSuchElementException success) {}
56	>	try {
57	>	q.iterator().next();
58	>	shouldThrow();
59	>	} catch (NoSuchElementException success) {}
60	>	try {
61	>	q.remove();
62	>	shouldThrow();
63	>	} catch (NoSuchElementException success) {}
64		}
65
66		/**
#	Line 48 | Line 80 | public class LinkedTransferQueueTest ext
80		try {
81		new LinkedTransferQueue(null);
82		shouldThrow();
83	<	} catch (NullPointerException success) {
52	<	}
83	>	} catch (NullPointerException success) {}
84		}
85
86		/**
#	Line 61 | Line 92 | public class LinkedTransferQueueTest ext
92		Integer[] ints = new Integer[SIZE];
93		new LinkedTransferQueue(Arrays.asList(ints));
94		shouldThrow();
95	<	} catch (NullPointerException success) {
65	<	}
95	>	} catch (NullPointerException success) {}
96		}
97
98		/**
#	Line 77 | Line 107 | public class LinkedTransferQueueTest ext
107		}
108		new LinkedTransferQueue(Arrays.asList(ints));
109		shouldThrow();
110	<	} catch (NullPointerException success) {
81	<	}
110	>	} catch (NullPointerException success) {}
111		}
112
113		/**
114		* Queue contains all elements of the collection it is initialized by
115		*/
116		public void testConstructor5() {
117	<	try {
118	<	Integer[] ints = new Integer[SIZE];
119	<	for (int i = 0; i < SIZE; ++i) {
120	<	ints[i] = i;
121	<	}
122	<	LinkedTransferQueue q
123	<	= new LinkedTransferQueue(Arrays.asList(ints));
124	<	for (int i = 0; i < SIZE; ++i) {
125	<	assertEquals(ints[i], q.poll());
126	<	}
127	<	} finally {
117	>	Integer[] ints = new Integer[SIZE];
118	>	for (int i = 0; i < SIZE; ++i) {
119	>	ints[i] = i;
120	>	}
121	>	List intList = Arrays.asList(ints);
122	>	LinkedTransferQueue q
123	>	= new LinkedTransferQueue(intList);
124	>	assertEquals(q.size(), intList.size());
125	>	assertEquals(q.toString(), intList.toString());
126	>	assertTrue(Arrays.equals(q.toArray(),
127	>	intList.toArray()));
128	>	assertTrue(Arrays.equals(q.toArray(new Object[0]),
129	>	intList.toArray(new Object[0])));
130	>	assertTrue(Arrays.equals(q.toArray(new Object[SIZE]),
131	>	intList.toArray(new Object[SIZE])));
132	>	for (int i = 0; i < SIZE; ++i) {
133	>	assertEquals(ints[i], q.poll());
134		}
135		}
136
137		/**
138	<	* Remaining capacity never decrease nor increase on add or remove
138	>	* remainingCapacity() always returns Integer.MAX_VALUE
139		*/
140		public void testRemainingCapacity() {
141		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
#	Line 124 | Line 159 | public class LinkedTransferQueueTest ext
159		LinkedTransferQueue q = new LinkedTransferQueue();
160		q.offer(null);
161		shouldThrow();
162	<	} catch (NullPointerException success) {
128	<	}
162	>	} catch (NullPointerException success) {}
163		}
164
165		/**
#	Line 136 | Line 170 | public class LinkedTransferQueueTest ext
170		LinkedTransferQueue q = new LinkedTransferQueue();
171		q.add(null);
172		shouldThrow();
173	<	} catch (NullPointerException success) {
140	<	}
173	>	} catch (NullPointerException success) {}
174		}
175
176		/**
#	Line 148 | Line 181 | public class LinkedTransferQueueTest ext
181		LinkedTransferQueue q = new LinkedTransferQueue();
182		q.addAll(null);
183		shouldThrow();
184	<	} catch (NullPointerException success) {
152	<	}
184	>	} catch (NullPointerException success) {}
185		}
186
187		/**
#	Line 160 | Line 192 | public class LinkedTransferQueueTest ext
192		LinkedTransferQueue q = populatedQueue(SIZE);
193		q.addAll(q);
194		shouldThrow();
195	<	} catch (IllegalArgumentException success) {
164	<	}
195	>	} catch (IllegalArgumentException success) {}
196		}
197
198		/**
#	Line 173 | Line 204 | public class LinkedTransferQueueTest ext
204		Integer[] ints = new Integer[SIZE];
205		q.addAll(Arrays.asList(ints));
206		shouldThrow();
207	<	} catch (NullPointerException success) {
177	<	}
207	>	} catch (NullPointerException success) {}
208		}
209
210		/**
#	Line 190 | Line 220 | public class LinkedTransferQueueTest ext
220		}
221		q.addAll(Arrays.asList(ints));
222		shouldThrow();
223	<	} catch (NullPointerException success) {
194	<	}
223	>	} catch (NullPointerException success) {}
224		}
225
226		/**
#	Line 228 | Line 257 | public class LinkedTransferQueueTest ext
257		public void testPut() {
258		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
259		for (int i = 0; i < SIZE; ++i) {
260	+	assertEquals(q.size(), i);
261		q.put(i);
262		assertTrue(q.contains(i));
263		}
234	–	assertEquals(q.size(), SIZE);
264		}
265
266		/**
#	Line 249 | Line 278 | public class LinkedTransferQueueTest ext
278		*/
279		public void testTakeFromEmpty() throws InterruptedException {
280		final LinkedTransferQueue q = new LinkedTransferQueue();
281	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
282	<	void realRun() throws InterruptedException {
281	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
282	>	public void realRun() throws InterruptedException {
283		q.take();
284		}});
256	–	t.start();
285		Thread.sleep(SHORT_DELAY_MS);
286		t.interrupt();
287		t.join();
#	Line 263 | Line 291 | public class LinkedTransferQueueTest ext
291		* Take removes existing elements until empty, then blocks interruptibly
292		*/
293		public void testBlockingTake() throws InterruptedException {
294	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
295	<	void realRun() throws InterruptedException {
296	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
294	>	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
295	>	Thread t = new Thread(new CheckedRunnable() {
296	>	public void realRun() throws InterruptedException {
297		for (int i = 0; i < SIZE; ++i) {
298	<	threadAssertEquals(i, (int) q.take());
298	>	assertEquals(i, (int) q.take());
299		}
300	<	q.take();
300	>	try {
301	>	q.take();
302	>	shouldThrow();
303	>	} catch (InterruptedException success) {}
304		}});
305	+
306		t.start();
307		Thread.sleep(SHORT_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 297 | Line 331 | public class LinkedTransferQueueTest ext
331		assertEquals(i, (int) q.poll(0, MILLISECONDS));
332		}
333		assertNull(q.poll(0, MILLISECONDS));
334	+	checkEmpty(q);
335		}
336
337		/**
#	Line 305 | 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, 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, MILLISECONDS));
349	+	checkEmpty(q);
350		}
351
352		/**
#	Line 315 | Line 354 | public class LinkedTransferQueueTest ext
354		* returning timeout status
355		*/
356		public void testInterruptedTimedPoll() throws InterruptedException {
357	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
358	<	void realRun() throws InterruptedException {
359	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
357	>	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
358	>	Thread t = newStartedThread(new CheckedRunnable() {
359	>	public void realRun() throws InterruptedException {
360		for (int i = 0; i < SIZE; ++i) {
361	<	threadAssertEquals(i, (int) q.poll(SHORT_DELAY_MS,
362	<	MILLISECONDS));
361	>	long t0 = System.nanoTime();
362	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
363	>	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
364	>	assertTrue(millisElapsed < SMALL_DELAY_MS);
365		}
366	<	q.poll(SHORT_DELAY_MS, MILLISECONDS);
366	>	try {
367	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
368	>	shouldThrow();
369	>	} catch (InterruptedException success) {}
370		}});
327	–	t.start();
328	–	Thread.sleep(SHORT_DELAY_MS);
329	–	t.interrupt();
330	–	t.join();
331	–	}
371
333	–	/**
334	–	* timed poll before a delayed offer fails; after offer succeeds;
335	–	* on interruption throws
336	–	*/
337	–	public void testTimedPollWithOffer() throws InterruptedException {
338	–	final LinkedTransferQueue q = new LinkedTransferQueue();
339	–	Thread t = new Thread(new CheckedInterruptedRunnable() {
340	–	void realRun() throws InterruptedException {
341	–	threadAssertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
342	–	q.poll(LONG_DELAY_MS, MILLISECONDS);
343	–	q.poll(LONG_DELAY_MS, MILLISECONDS);
344	–	}});
345	–	t.start();
372		Thread.sleep(SMALL_DELAY_MS);
347	–	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
373		t.interrupt();
374		t.join();
375	+	checkEmpty(q);
376		}
377
378		/**
379		* peek returns next element, or null if empty
380		*/
381	<	public void testPeek() {
381	>	public void testPeek() throws InterruptedException {
382		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
383		for (int i = 0; i < SIZE; ++i) {
384		assertEquals(i, (int) q.peek());
#	Line 361 | Line 387 | public class LinkedTransferQueueTest ext
387		i != (int) q.peek());
388		}
389		assertNull(q.peek());
390	+	checkEmpty(q);
391		}
392
393		/**
394		* element returns next element, or throws NoSuchElementException if empty
395		*/
396	<	public void testElement() {
396	>	public void testElement() throws InterruptedException {
397		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
398		for (int i = 0; i < SIZE; ++i) {
399		assertEquals(i, (int) q.element());
#	Line 375 | Line 402 | public class LinkedTransferQueueTest ext
402		try {
403		q.element();
404		shouldThrow();
405	<	} catch (NoSuchElementException success) {
406	<	}
405	>	} catch (NoSuchElementException success) {}
406	>	checkEmpty(q);
407		}
408
409		/**
410		* remove removes next element, or throws NoSuchElementException if empty
411		*/
412	<	public void testRemove() {
412	>	public void testRemove() throws InterruptedException {
413		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
414		for (int i = 0; i < SIZE; ++i) {
415		assertEquals(i, (int) q.remove());
#	Line 390 | Line 417 | public class LinkedTransferQueueTest ext
417		try {
418		q.remove();
419		shouldThrow();
420	<	} catch (NoSuchElementException success) {
421	<	}
420	>	} catch (NoSuchElementException success) {}
421	>	checkEmpty(q);
422		}
423
424		/**
425		* remove(x) removes x and returns true if present
426		*/
427	<	public void testRemoveElement() {
427	>	public void testRemoveElement() throws InterruptedException {
428		LinkedTransferQueue q = populatedQueue(SIZE);
429		for (int i = 1; i < SIZE; i += 2) {
430		assertTrue(q.remove(i));
#	Line 406 | Line 433 | public class LinkedTransferQueueTest ext
433		assertTrue(q.remove(i));
434		assertFalse(q.remove(i + 1));
435		}
436	<	assertTrue(q.isEmpty());
436	>	checkEmpty(q);
437		}
438
439		/**
#	Line 419 | Line 446 | public class LinkedTransferQueueTest ext
446		assertTrue(q.remove(one));
447		assertTrue(q.remove(two));
448		assertTrue(q.add(three));
449	<	assertTrue(q.take() != null);
449	>	assertSame(q.take(), three);
450		}
451
452		/**
#	Line 437 | Line 464 | public class LinkedTransferQueueTest ext
464		/**
465		* clear removes all elements
466		*/
467	<	public void testClear() {
467	>	public void testClear() throws InterruptedException {
468		LinkedTransferQueue q = populatedQueue(SIZE);
469		q.clear();
470	<	assertTrue(q.isEmpty());
444	<	assertEquals(0, q.size());
470	>	checkEmpty(q);
471		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
472		q.add(one);
473		assertFalse(q.isEmpty());
474	+	assertEquals(1, q.size());
475		assertTrue(q.contains(one));
476		q.clear();
477	<	assertTrue(q.isEmpty());
477	>	checkEmpty(q);
478		}
479
480		/**
#	Line 501 | Line 528 | public class LinkedTransferQueueTest ext
528		}
529
530		/**
531	<	* toArray contains all elements
531	>	* toArray() contains all elements
532		*/
533		public void testToArray() throws InterruptedException {
534		LinkedTransferQueue q = populatedQueue(SIZE);
#	Line 527 | Line 554 | public class LinkedTransferQueueTest ext
554		* toArray(null) throws NullPointerException
555		*/
556		public void testToArray_BadArg() {
557	+	LinkedTransferQueue q = populatedQueue(SIZE);
558		try {
531	–	LinkedTransferQueue q = populatedQueue(SIZE);
559		Object o[] = q.toArray(null);
560		shouldThrow();
561	<	} catch (NullPointerException success) {
535	<	}
561	>	} catch (NullPointerException success) {}
562		}
563
564		/**
565	<	* toArray with incompatible array type throws CCE
565	>	* toArray(incompatible array type) throws CCE
566		*/
567		public void testToArray1_BadArg() {
568	+	LinkedTransferQueue q = populatedQueue(SIZE);
569		try {
543	–	LinkedTransferQueue q = populatedQueue(SIZE);
570		Object o[] = q.toArray(new String[10]);
571		shouldThrow();
572	<	} catch (ArrayStoreException success) {
547	<	}
572	>	} catch (ArrayStoreException success) {}
573		}
574
575		/**
#	Line 553 | Line 578 | public class LinkedTransferQueueTest ext
578		public void testIterator() throws InterruptedException {
579		LinkedTransferQueue q = populatedQueue(SIZE);
580		Iterator it = q.iterator();
581	+	int i = 0;
582		while (it.hasNext()) {
583	<	assertEquals(it.next(), q.take());
583	>	assertEquals(it.next(), i++);
584		}
585	+	assertEquals(i, SIZE);
586		}
587
588		/**
589	<	* iterator.remove removes current element
589	>	* iterator.remove() removes current element
590		*/
591		public void testIteratorRemove() {
592		final LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 572 | Line 599 | public class LinkedTransferQueueTest ext
599		it.remove();
600
601		it = q.iterator();
602	<	assertEquals(it.next(), one);
603	<	assertEquals(it.next(), three);
602	>	assertSame(it.next(), one);
603	>	assertSame(it.next(), three);
604		assertFalse(it.hasNext());
605		}
606
#	Line 631 | Line 658 | public class LinkedTransferQueueTest ext
658		ExecutorService executor = Executors.newFixedThreadPool(2);
659
660		executor.execute(new CheckedRunnable() {
661	<	void realRun() {
662	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS,
636	<	MILLISECONDS));
661	>	public void realRun() {
662	>	assertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS));
663		}});
664
665		executor.execute(new CheckedRunnable() {
666	<	void realRun() throws InterruptedException {
666	>	public void realRun() throws InterruptedException {
667		Thread.sleep(SMALL_DELAY_MS);
668	<	threadAssertEquals(one, q.take());
668	>	assertSame(one, q.take());
669		}});
670
671		joinPool(executor);
672		}
673
674		/**
675	<	* poll retrieves elements across Executor threads
675	>	* timed poll retrieves elements across Executor threads
676		*/
677		public void testPollInExecutor() {
678		final LinkedTransferQueue q = new LinkedTransferQueue();
679		ExecutorService executor = Executors.newFixedThreadPool(2);
680
681		executor.execute(new CheckedRunnable() {
682	<	void realRun() throws InterruptedException {
683	<	threadAssertNull(q.poll());
684	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS,
685	<	MILLISECONDS));
660	<	threadAssertTrue(q.isEmpty());
682	>	public void realRun() throws InterruptedException {
683	>	assertNull(q.poll());
684	>	assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
685	>	assertTrue(q.isEmpty());
686		}});
687
688		executor.execute(new CheckedRunnable() {
689	<	void realRun() throws InterruptedException {
689	>	public void realRun() throws InterruptedException {
690		Thread.sleep(SMALL_DELAY_MS);
691		q.put(one);
692		}});
#	Line 701 | Line 726 | public class LinkedTransferQueueTest ext
726		try {
727		q.drainTo(null);
728		shouldThrow();
729	<	} catch (NullPointerException success) {
705	<	}
729	>	} catch (NullPointerException success) {}
730		}
731
732		/**
#	Line 713 | Line 737 | public class LinkedTransferQueueTest ext
737		try {
738		q.drainTo(q);
739		shouldThrow();
740	<	} catch (IllegalArgumentException success) {
717	<	}
740	>	} catch (IllegalArgumentException success) {}
741		}
742
743		/**
#	Line 744 | Line 767 | public class LinkedTransferQueueTest ext
767		}
768
769		/**
770	<	* drainTo empties full queue, unblocking a waiting put.
770	>	* drainTo(c) empties full queue, unblocking a waiting put.
771		*/
772		public void testDrainToWithActivePut() throws InterruptedException {
773		final LinkedTransferQueue q = populatedQueue(SIZE);
774	<	Thread t = new Thread(new CheckedRunnable() {
775	<	void realRun() {
774	>	Thread t = newStartedThread(new CheckedRunnable() {
775	>	public void realRun() {
776		q.put(SIZE + 1);
777		}});
755	–	t.start();
778		ArrayList l = new ArrayList();
779		q.drainTo(l);
780		assertTrue(l.size() >= SIZE);
#	Line 769 | Line 791 | public class LinkedTransferQueueTest ext
791		public void testDrainToNullN() {
792		LinkedTransferQueue q = populatedQueue(SIZE);
793		try {
794	<	q.drainTo(null, 0);
794	>	q.drainTo(null, SIZE);
795		shouldThrow();
796	<	} catch (NullPointerException success) {
775	<	}
796	>	} catch (NullPointerException success) {}
797		}
798
799		/**
#	Line 781 | Line 802 | public class LinkedTransferQueueTest ext
802		public void testDrainToSelfN() {
803		LinkedTransferQueue q = populatedQueue(SIZE);
804		try {
805	<	q.drainTo(q, 0);
805	>	q.drainTo(q, SIZE);
806		shouldThrow();
807	<	} catch (IllegalArgumentException success) {
787	<	}
807	>	} catch (IllegalArgumentException success) {}
808		}
809
810		/**
811	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
811	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
812		*/
813		public void testDrainToN() {
814		LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 810 | Line 830 | public class LinkedTransferQueueTest ext
830		}
831
832		/**
833	<	* poll and take decrement the waiting consumer count
833	>	* timed poll() or take() increments the waiting consumer count;
834	>	* offer(e) decrements the waiting consumer count
835		*/
836		public void testWaitingConsumer() throws InterruptedException {
837		final LinkedTransferQueue q = new LinkedTransferQueue();
838	<	final ConsumerObserver waiting = new ConsumerObserver();
839	<	new Thread(new CheckedRunnable() {
840	<	void realRun() {
841	<	threadAssertTrue(q.hasWaitingConsumer());
842	<	waiting.setWaitingConsumer(q.getWaitingConsumerCount());
843	<	threadAssertTrue(q.offer(new Object()));
844	<	}}).start();
845	<	assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) != null);
846	<	assertTrue(q.getWaitingConsumerCount()
847	<	< waiting.getWaitingConsumers());
838	>	assertEquals(q.getWaitingConsumerCount(), 0);
839	>	assertFalse(q.hasWaitingConsumer());
840	>
841	>	Thread t = newStartedThread(new CheckedRunnable() {
842	>	public void realRun() throws InterruptedException {
843	>	Thread.sleep(SMALL_DELAY_MS);
844	>	assertTrue(q.hasWaitingConsumer());
845	>	assertEquals(q.getWaitingConsumerCount(), 1);
846	>	assertTrue(q.offer(one));
847	>	assertFalse(q.hasWaitingConsumer());
848	>	assertEquals(q.getWaitingConsumerCount(), 0);
849	>	}});
850	>
851	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
852	>	assertEquals(q.getWaitingConsumerCount(), 0);
853	>	assertFalse(q.hasWaitingConsumer());
854	>	t.join();
855		}
856
857		/**
#	Line 834 | Line 862 | public class LinkedTransferQueueTest ext
862		LinkedTransferQueue q = new LinkedTransferQueue();
863		q.transfer(null);
864		shouldThrow();
865	<	} catch (NullPointerException ex) {
838	<	}
865	>	} catch (NullPointerException success) {}
866		}
867
868		/**
#	Line 846 | Line 873 | public class LinkedTransferQueueTest ext
873		final LinkedTransferQueue<Integer> q
874		= new LinkedTransferQueue<Integer>();
875
876	<	new Thread(new CheckedRunnable() {
877	<	void realRun() throws InterruptedException {
876	>	Thread t = newStartedThread(new CheckedRunnable() {
877	>	public void realRun() throws InterruptedException {
878		q.transfer(SIZE);
879	<	threadAssertTrue(q.isEmpty());
880	<	}}).start();
879	>	assertTrue(q.isEmpty());
880	>	}});
881
882		Thread.sleep(SHORT_DELAY_MS);
883		assertEquals(1, q.size());
884		assertEquals(SIZE, (int) q.poll());
885		assertTrue(q.isEmpty());
886	+	t.join();
887		}
888
889		/**
#	Line 865 | Line 893 | public class LinkedTransferQueueTest ext
893		final LinkedTransferQueue<Integer> q
894		= new LinkedTransferQueue<Integer>();
895
896	<	Thread first = new Thread(new CheckedRunnable() {
897	<	void realRun() throws InterruptedException {
896	>	Thread first = newStartedThread(new CheckedRunnable() {
897	>	public void realRun() throws InterruptedException {
898		Integer i = SIZE + 1;
899		q.transfer(i);
900	<	threadAssertTrue(!q.contains(i));
901	<	threadAssertEquals(1, q.size());
900	>	assertTrue(!q.contains(i));
901	>	assertEquals(1, q.size());
902		}});
875	–	first.start();
903
904	<	Thread interruptedThread = new Thread(new CheckedInterruptedRunnable() {
905	<	void realRun() throws InterruptedException {
906	<	while (q.size() == 0)
907	<	Thread.yield();
908	<	q.transfer(SIZE);
909	<	}});
910	<	interruptedThread.start();
904	>	Thread interruptedThread = newStartedThread(
905	>	new CheckedInterruptedRunnable() {
906	>	public void realRun() throws InterruptedException {
907	>	while (q.size() == 0)
908	>	Thread.yield();
909	>	q.transfer(SIZE);
910	>	}});
911
912		while (q.size() < 2)
913		Thread.yield();
#	Line 900 | Line 927 | public class LinkedTransferQueueTest ext
927		*/
928		public void testTransfer4() throws InterruptedException {
929		final LinkedTransferQueue q = new LinkedTransferQueue();
930	<	new Thread(new CheckedRunnable() {
931	<	void realRun() throws InterruptedException {
930	>
931	>	Thread t = newStartedThread(new CheckedRunnable() {
932	>	public void realRun() throws InterruptedException {
933		q.transfer(four);
934	<	threadAssertFalse(q.contains(four));
935	<	threadAssertEquals(three, q.poll());
936	<	}}).start();
937	<	Thread.sleep(MEDIUM_DELAY_MS);
934	>	assertFalse(q.contains(four));
935	>	assertSame(three, q.poll());
936	>	}});
937	>
938	>	Thread.sleep(SHORT_DELAY_MS);
939		assertTrue(q.offer(three));
940	<	assertEquals(four, q.poll());
940	>	assertSame(four, q.poll());
941	>	t.join();
942		}
943
944		/**
#	Line 919 | Line 949 | public class LinkedTransferQueueTest ext
949		final LinkedTransferQueue<Integer> q
950		= new LinkedTransferQueue<Integer>();
951
952	<	new Thread(new CheckedRunnable() {
953	<	void realRun() throws InterruptedException {
952	>	Thread t = newStartedThread(new CheckedRunnable() {
953	>	public void realRun() throws InterruptedException {
954		q.transfer(SIZE);
955	<	threadAssertTrue(q.isEmpty());
956	<	}}).start();
955	>	checkEmpty(q);
956	>	}});
957
958		Thread.sleep(SHORT_DELAY_MS);
959		assertEquals(SIZE, (int) q.take());
960	<	assertTrue(q.isEmpty());
960	>	checkEmpty(q);
961	>	t.join();
962		}
963
964		/**
#	Line 937 | Line 968 | public class LinkedTransferQueueTest ext
968		try {
969		final LinkedTransferQueue q = new LinkedTransferQueue();
970		q.tryTransfer(null);
971	<	this.shouldThrow();
972	<	} catch (NullPointerException ex) {
942	<	}
971	>	shouldThrow();
972	>	} catch (NullPointerException success) {}
973		}
974
975		/**
976		* tryTransfer returns false and does not enqueue if there are no
977		* consumers waiting to poll or take.
978		*/
979	<	public void testTryTransfer2() {
979	>	public void testTryTransfer2() throws InterruptedException {
980		final LinkedTransferQueue q = new LinkedTransferQueue();
981		assertFalse(q.tryTransfer(new Object()));
982		assertFalse(q.hasWaitingConsumer());
983	<	assertTrue(q.isEmpty());
954	<	assertEquals(0, q.size());
983	>	checkEmpty(q);
984		}
985
986		/**
#	Line 961 | Line 990 | public class LinkedTransferQueueTest ext
990		public void testTryTransfer3() throws InterruptedException {
991		final Object hotPotato = new Object();
992		final LinkedTransferQueue q = new LinkedTransferQueue();
993	<	new Thread(new CheckedRunnable() {
994	<	void realRun() {
993	>
994	>	Thread t = newStartedThread(new CheckedRunnable() {
995	>	public void realRun() {
996		while (! q.hasWaitingConsumer())
997		Thread.yield();
998	<	threadAssertTrue(q.hasWaitingConsumer());
999	<	threadAssertTrue(q.isEmpty());
1000	<	threadAssertTrue(q.size() == 0);
1001	<	threadAssertTrue(q.tryTransfer(hotPotato));
1002	<	}}).start();
1003	<	assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) == hotPotato);
1004	<	assertTrue(q.isEmpty());
998	>	assertTrue(q.hasWaitingConsumer());
999	>	assertTrue(q.isEmpty());
1000	>	assertEquals(q.size(), 0);
1001	>	assertTrue(q.tryTransfer(hotPotato));
1002	>	}});
1003	>
1004	>	assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
1005	>	checkEmpty(q);
1006	>	t.join();
1007		}
1008
1009		/**
#	Line 981 | Line 1013 | public class LinkedTransferQueueTest ext
1013		public void testTryTransfer4() throws InterruptedException {
1014		final Object hotPotato = new Object();
1015		final LinkedTransferQueue q = new LinkedTransferQueue();
1016	<	new Thread(new CheckedRunnable() {
1017	<	void realRun() {
1016	>
1017	>	Thread t = newStartedThread(new CheckedRunnable() {
1018	>	public void realRun() {
1019		while (! q.hasWaitingConsumer())
1020		Thread.yield();
1021	<	threadAssertTrue(q.hasWaitingConsumer());
1022	<	threadAssertTrue(q.isEmpty());
1023	<	threadAssertTrue(q.size() == 0);
1024	<	threadAssertTrue(q.tryTransfer(hotPotato));
1025	<	}}).start();
1026	<	assertTrue(q.take() == hotPotato);
1027	<	assertTrue(q.isEmpty());
1021	>	assertTrue(q.hasWaitingConsumer());
1022	>	assertTrue(q.isEmpty());
1023	>	assertEquals(q.size(), 0);
1024	>	assertTrue(q.tryTransfer(hotPotato));
1025	>	}});
1026	>
1027	>	assertSame(q.take(), hotPotato);
1028	>	checkEmpty(q);
1029	>	t.join();
1030		}
1031
1032		/**
#	Line 1000 | Line 1035 | public class LinkedTransferQueueTest ext
1035		*/
1036		public void testTryTransfer5() throws InterruptedException {
1037		final LinkedTransferQueue q = new LinkedTransferQueue();
1038	<	Thread toInterrupt = new Thread(new CheckedInterruptedRunnable() {
1039	<	void realRun() throws InterruptedException {
1038	>
1039	>	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
1040	>	public void realRun() throws InterruptedException {
1041		q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
1042		}});
1043	<	toInterrupt.start();
1043	>
1044		Thread.sleep(SMALL_DELAY_MS);
1045		toInterrupt.interrupt();
1046	+	toInterrupt.join();
1047		}
1048
1049		/**
#	Line 1014 | Line 1051 | public class LinkedTransferQueueTest ext
1051		*/
1052		public void testTryTransfer6() throws InterruptedException {
1053		final LinkedTransferQueue q = new LinkedTransferQueue();
1054	<	new Thread(new CheckedRunnable() {
1055	<	void realRun() throws InterruptedException {
1056	<	threadAssertFalse
1057	<	(q.tryTransfer(new Object(),
1058	<	SHORT_DELAY_MS, MILLISECONDS));
1059	<	}}).start();
1060	<	Thread.sleep(LONG_DELAY_MS);
1061	<	assertTrue(q.isEmpty());
1054	>
1055	>	Thread t = newStartedThread(new CheckedRunnable() {
1056	>	public void realRun() throws InterruptedException {
1057	>	long t0 = System.nanoTime();
1058	>	assertFalse(q.tryTransfer(new Object(),
1059	>	SHORT_DELAY_MS, MILLISECONDS));
1060	>	long elapsed = NANOSECONDS.toMillis(System.nanoTime() - t0);
1061	>	assertTrue(elapsed >= SHORT_DELAY_MS);
1062	>	}});
1063	>
1064	>	checkEmpty(q);
1065	>	awaitTermination(t, MEDIUM_DELAY_MS);
1066	>	checkEmpty(q);
1067		}
1068
1069		/**
#	Line 1031 | Line 1073 | public class LinkedTransferQueueTest ext
1073		public void testTryTransfer7() throws InterruptedException {
1074		final LinkedTransferQueue q = new LinkedTransferQueue();
1075		assertTrue(q.offer(four));
1076	<	new Thread(new CheckedRunnable() {
1077	<	void realRun() throws InterruptedException {
1078	<	threadAssertTrue(q.tryTransfer(five,
1079	<	LONG_DELAY_MS, MILLISECONDS));
1080	<	threadAssertTrue(q.isEmpty());
1081	<	}}).start();
1076	>
1077	>	Thread t = newStartedThread(new CheckedRunnable() {
1078	>	public void realRun() throws InterruptedException {
1079	>	assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
1080	>	assertTrue(q.isEmpty());
1081	>	}});
1082	>
1083		Thread.sleep(SHORT_DELAY_MS);
1084		assertEquals(2, q.size());
1085	<	assertEquals(four, q.poll());
1086	<	assertEquals(five, q.poll());
1087	<	assertTrue(q.isEmpty());
1085	>	assertSame(four, q.poll());
1086	>	assertSame(five, q.poll());
1087	>	checkEmpty(q);
1088	>	t.join();
1089		}
1090
1091		/**
#	Line 1054 | Line 1098 | public class LinkedTransferQueueTest ext
1098		assertEquals(1, q.size());
1099		assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1100		assertEquals(1, q.size());
1101	<	assertEquals(four, q.poll());
1058	<	threadAssertTrue(q.isEmpty());
1101	>	assertSame(four, q.poll());
1102		assertNull(q.poll());
1103	+	checkEmpty(q);
1104		}
1105
1106		private LinkedTransferQueue<Integer> populatedQueue(int n) {
#	Line 1070 | Line 1114 | public class LinkedTransferQueueTest ext
1114		assertFalse(q.isEmpty());
1115		return q;
1116		}
1073	–
1074	–	private static class ConsumerObserver {
1075	–
1076	–	private int waitingConsumers;
1077	–
1078	–	private ConsumerObserver() {
1079	–	}
1080	–
1081	–	private void setWaitingConsumer(int i) {
1082	–	this.waitingConsumers = i;
1083	–	}
1084	–
1085	–	private int getWaitingConsumers() {
1086	–	return waitingConsumers;
1087	–	}
1088	–	}
1117		}

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