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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 1.17 by jsr166, Sat Nov 21 19:45:16 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 31 | 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	+	try {
49	+	q.iterator().next();
50	+	shouldThrow();
51	+	} catch (NoSuchElementException success) {}
52	+	try {
53	+	q.remove();
54	+	shouldThrow();
55	+	} catch (NoSuchElementException success) {}
56	+	}
57	+
58		/**
59		* Constructor builds new queue with size being zero and empty
60		* being true
#	Line 48 | Line 72 | public class LinkedTransferQueueTest ext
72		try {
73		new LinkedTransferQueue(null);
74		shouldThrow();
75	<	} catch (NullPointerException success) {
52	<	}
75	>	} catch (NullPointerException success) {}
76		}
77
78		/**
#	Line 61 | Line 84 | public class LinkedTransferQueueTest ext
84		Integer[] ints = new Integer[SIZE];
85		new LinkedTransferQueue(Arrays.asList(ints));
86		shouldThrow();
87	<	} catch (NullPointerException success) {
65	<	}
87	>	} catch (NullPointerException success) {}
88		}
89
90		/**
#	Line 77 | Line 99 | public class LinkedTransferQueueTest ext
99		}
100		new LinkedTransferQueue(Arrays.asList(ints));
101		shouldThrow();
102	<	} catch (NullPointerException success) {
81	<	}
102	>	} catch (NullPointerException success) {}
103		}
104
105		/**
106		* Queue contains all elements of the collection it is initialized by
107		*/
108		public void testConstructor5() {
109	<	try {
110	<	Integer[] ints = new Integer[SIZE];
111	<	for (int i = 0; i < SIZE; ++i) {
112	<	ints[i] = i;
113	<	}
114	<	LinkedTransferQueue q
115	<	= new LinkedTransferQueue(Arrays.asList(ints));
116	<	for (int i = 0; i < SIZE; ++i) {
117	<	assertEquals(ints[i], q.poll());
118	<	}
119	<	} finally {
109	>	Integer[] ints = new Integer[SIZE];
110	>	for (int i = 0; i < SIZE; ++i) {
111	>	ints[i] = i;
112	>	}
113	>	List intList = Arrays.asList(ints);
114	>	LinkedTransferQueue q
115	>	= new LinkedTransferQueue(intList);
116	>	assertEquals(q.size(), intList.size());
117	>	assertEquals(q.toString(), intList.toString());
118	>	assertTrue(Arrays.equals(q.toArray(),
119	>	intList.toArray()));
120	>	assertTrue(Arrays.equals(q.toArray(new Object[0]),
121	>	intList.toArray(new Object[0])));
122	>	assertTrue(Arrays.equals(q.toArray(new Object[SIZE]),
123	>	intList.toArray(new Object[SIZE])));
124	>	for (int i = 0; i < SIZE; ++i) {
125	>	assertEquals(ints[i], q.poll());
126		}
127		}
128
129		/**
130	<	* Remaining capacity never decrease nor increase on add or remove
130	>	* remainingCapacity() always returns Integer.MAX_VALUE
131		*/
132		public void testRemainingCapacity() {
133		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
#	Line 124 | Line 151 | public class LinkedTransferQueueTest ext
151		LinkedTransferQueue q = new LinkedTransferQueue();
152		q.offer(null);
153		shouldThrow();
154	<	} catch (NullPointerException success) {
128	<	}
154	>	} catch (NullPointerException success) {}
155		}
156
157		/**
#	Line 136 | Line 162 | public class LinkedTransferQueueTest ext
162		LinkedTransferQueue q = new LinkedTransferQueue();
163		q.add(null);
164		shouldThrow();
165	<	} catch (NullPointerException success) {
140	<	}
165	>	} catch (NullPointerException success) {}
166		}
167
168		/**
#	Line 148 | Line 173 | public class LinkedTransferQueueTest ext
173		LinkedTransferQueue q = new LinkedTransferQueue();
174		q.addAll(null);
175		shouldThrow();
176	<	} catch (NullPointerException success) {
152	<	}
176	>	} catch (NullPointerException success) {}
177		}
178
179		/**
#	Line 160 | Line 184 | public class LinkedTransferQueueTest ext
184		LinkedTransferQueue q = populatedQueue(SIZE);
185		q.addAll(q);
186		shouldThrow();
187	<	} catch (IllegalArgumentException success) {
164	<	}
187	>	} catch (IllegalArgumentException success) {}
188		}
189
190		/**
#	Line 173 | Line 196 | public class LinkedTransferQueueTest ext
196		Integer[] ints = new Integer[SIZE];
197		q.addAll(Arrays.asList(ints));
198		shouldThrow();
199	<	} catch (NullPointerException success) {
177	<	}
199	>	} catch (NullPointerException success) {}
200		}
201
202		/**
#	Line 190 | Line 212 | public class LinkedTransferQueueTest ext
212		}
213		q.addAll(Arrays.asList(ints));
214		shouldThrow();
215	<	} catch (NullPointerException success) {
194	<	}
215	>	} catch (NullPointerException success) {}
216		}
217
218		/**
#	Line 228 | Line 249 | public class LinkedTransferQueueTest ext
249		public void testPut() {
250		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
251		for (int i = 0; i < SIZE; ++i) {
252	+	assertEquals(q.size(), i);
253		q.put(i);
254		assertTrue(q.contains(i));
255		}
234	–	assertEquals(q.size(), SIZE);
256		}
257
258		/**
#	Line 249 | Line 270 | public class LinkedTransferQueueTest ext
270		*/
271		public void testTakeFromEmpty() throws InterruptedException {
272		final LinkedTransferQueue q = new LinkedTransferQueue();
273	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
273	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
274		void realRun() throws InterruptedException {
275		q.take();
276		}});
256	–	t.start();
277		Thread.sleep(SHORT_DELAY_MS);
278		t.interrupt();
279		t.join();
#	Line 263 | Line 283 | public class LinkedTransferQueueTest ext
283		* Take removes existing elements until empty, then blocks interruptibly
284		*/
285		public void testBlockingTake() throws InterruptedException {
286	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
286	>	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
287	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
288		void realRun() throws InterruptedException {
268	–	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
289		for (int i = 0; i < SIZE; ++i) {
290		threadAssertEquals(i, (int) q.take());
291		}
292		q.take();
293		}});
294	<	t.start();
275	<	Thread.sleep(SHORT_DELAY_MS);
294	>	Thread.sleep(SMALL_DELAY_MS);
295		t.interrupt();
296		t.join();
297	+	checkEmpty(q);
298		}
299
300		/**
301		* poll succeeds unless empty
302		*/
303	<	public void testPoll() {
303	>	public void testPoll() throws InterruptedException {
304		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
305		for (int i = 0; i < SIZE; ++i) {
306		assertEquals(i, (int) q.poll());
307		}
308		assertNull(q.poll());
309	+	checkEmpty(q);
310		}
311
312		/**
#	Line 297 | Line 318 | public class LinkedTransferQueueTest ext
318		assertEquals(i, (int) q.poll(0, MILLISECONDS));
319		}
320		assertNull(q.poll(0, MILLISECONDS));
321	+	checkEmpty(q);
322		}
323
324		/**
#	Line 305 | Line 327 | public class LinkedTransferQueueTest ext
327		public void testTimedPoll() throws InterruptedException {
328		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
329		for (int i = 0; i < SIZE; ++i) {
330	<	assertEquals(i, (int) q.poll(SHORT_DELAY_MS, MILLISECONDS));
330	>	long t0 = System.nanoTime();
331	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
332	>	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
333	>	assertTrue(millisElapsed < SMALL_DELAY_MS);
334		}
335		assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
336	+	checkEmpty(q);
337		}
338
339		/**
#	Line 315 | Line 341 | public class LinkedTransferQueueTest ext
341		* returning timeout status
342		*/
343		public void testInterruptedTimedPoll() throws InterruptedException {
344	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
344	>	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
345	>	Thread t = newStartedThread(new CheckedRunnable() {
346		void realRun() throws InterruptedException {
320	–	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
347		for (int i = 0; i < SIZE; ++i) {
348	<	threadAssertEquals(i, (int) q.poll(SHORT_DELAY_MS,
348	>	long t0 = System.nanoTime();
349	>	threadAssertEquals(i, (int) q.poll(LONG_DELAY_MS,
350		MILLISECONDS));
351	+	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
352	+	assertTrue(millisElapsed < SMALL_DELAY_MS);
353		}
354	<	q.poll(SHORT_DELAY_MS, MILLISECONDS);
354	>	try {
355	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
356	>	shouldThrow();
357	>	} catch (InterruptedException success) {}
358		}});
359	<	t.start();
360	<	Thread.sleep(SHORT_DELAY_MS);
359	>
360	>	Thread.sleep(SMALL_DELAY_MS);
361		t.interrupt();
362		t.join();
363	+	checkEmpty(q);
364		}
365
366		/**
#	Line 336 | Line 369 | public class LinkedTransferQueueTest ext
369		*/
370		public void testTimedPollWithOffer() throws InterruptedException {
371		final LinkedTransferQueue q = new LinkedTransferQueue();
372	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
372	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
373		void realRun() throws InterruptedException {
374		threadAssertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
375		q.poll(LONG_DELAY_MS, MILLISECONDS);
376		q.poll(LONG_DELAY_MS, MILLISECONDS);
377		}});
345	–	t.start();
378		Thread.sleep(SMALL_DELAY_MS);
379		assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
380		t.interrupt();
#	Line 352 | Line 384 | public class LinkedTransferQueueTest ext
384		/**
385		* peek returns next element, or null if empty
386		*/
387	<	public void testPeek() {
387	>	public void testPeek() throws InterruptedException {
388		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
389		for (int i = 0; i < SIZE; ++i) {
390		assertEquals(i, (int) q.peek());
#	Line 361 | Line 393 | public class LinkedTransferQueueTest ext
393		i != (int) q.peek());
394		}
395		assertNull(q.peek());
396	+	checkEmpty(q);
397		}
398
399		/**
400		* element returns next element, or throws NoSuchElementException if empty
401		*/
402	<	public void testElement() {
402	>	public void testElement() throws InterruptedException {
403		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
404		for (int i = 0; i < SIZE; ++i) {
405		assertEquals(i, (int) q.element());
#	Line 375 | Line 408 | public class LinkedTransferQueueTest ext
408		try {
409		q.element();
410		shouldThrow();
411	<	} catch (NoSuchElementException success) {
412	<	}
411	>	} catch (NoSuchElementException success) {}
412	>	checkEmpty(q);
413		}
414
415		/**
416		* remove removes next element, or throws NoSuchElementException if empty
417		*/
418	<	public void testRemove() {
418	>	public void testRemove() throws InterruptedException {
419		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
420		for (int i = 0; i < SIZE; ++i) {
421		assertEquals(i, (int) q.remove());
#	Line 390 | Line 423 | public class LinkedTransferQueueTest ext
423		try {
424		q.remove();
425		shouldThrow();
426	<	} catch (NoSuchElementException success) {
427	<	}
426	>	} catch (NoSuchElementException success) {}
427	>	checkEmpty(q);
428		}
429
430		/**
431		* remove(x) removes x and returns true if present
432		*/
433	<	public void testRemoveElement() {
433	>	public void testRemoveElement() throws InterruptedException {
434		LinkedTransferQueue q = populatedQueue(SIZE);
435		for (int i = 1; i < SIZE; i += 2) {
436		assertTrue(q.remove(i));
#	Line 406 | Line 439 | public class LinkedTransferQueueTest ext
439		assertTrue(q.remove(i));
440		assertFalse(q.remove(i + 1));
441		}
442	<	assertTrue(q.isEmpty());
442	>	checkEmpty(q);
443		}
444
445		/**
#	Line 419 | Line 452 | public class LinkedTransferQueueTest ext
452		assertTrue(q.remove(one));
453		assertTrue(q.remove(two));
454		assertTrue(q.add(three));
455	<	assertTrue(q.take() != null);
455	>	assertTrue(q.take() == three);
456		}
457
458		/**
#	Line 437 | Line 470 | public class LinkedTransferQueueTest ext
470		/**
471		* clear removes all elements
472		*/
473	<	public void testClear() {
473	>	public void testClear() throws InterruptedException {
474		LinkedTransferQueue q = populatedQueue(SIZE);
475		q.clear();
476	<	assertTrue(q.isEmpty());
444	<	assertEquals(0, q.size());
476	>	checkEmpty(q);
477		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
478		q.add(one);
479		assertFalse(q.isEmpty());
480	+	assertEquals(1, q.size());
481		assertTrue(q.contains(one));
482		q.clear();
483	<	assertTrue(q.isEmpty());
483	>	checkEmpty(q);
484		}
485
486		/**
#	Line 501 | Line 534 | public class LinkedTransferQueueTest ext
534		}
535
536		/**
537	<	* toArray contains all elements
537	>	* toArray() contains all elements
538		*/
539		public void testToArray() throws InterruptedException {
540		LinkedTransferQueue q = populatedQueue(SIZE);
#	Line 531 | Line 564 | public class LinkedTransferQueueTest ext
564		LinkedTransferQueue q = populatedQueue(SIZE);
565		Object o[] = q.toArray(null);
566		shouldThrow();
567	<	} catch (NullPointerException success) {
535	<	}
567	>	} catch (NullPointerException success) {}
568		}
569
570		/**
571	<	* toArray with incompatible array type throws CCE
571	>	* toArray(incompatible array type) throws CCE
572		*/
573		public void testToArray1_BadArg() {
574		try {
575		LinkedTransferQueue q = populatedQueue(SIZE);
576		Object o[] = q.toArray(new String[10]);
577		shouldThrow();
578	<	} catch (ArrayStoreException success) {
547	<	}
578	>	} catch (ArrayStoreException success) {}
579		}
580
581		/**
#	Line 553 | Line 584 | public class LinkedTransferQueueTest ext
584		public void testIterator() throws InterruptedException {
585		LinkedTransferQueue q = populatedQueue(SIZE);
586		Iterator it = q.iterator();
587	+	int i = 0;
588		while (it.hasNext()) {
589	<	assertEquals(it.next(), q.take());
589	>	assertEquals(it.next(), i++);
590		}
591	+	assertEquals(i, SIZE);
592		}
593
594		/**
595	<	* iterator.remove removes current element
595	>	* iterator.remove() removes current element
596		*/
597		public void testIteratorRemove() {
598		final LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 646 | Line 679 | public class LinkedTransferQueueTest ext
679		}
680
681		/**
682	<	* poll retrieves elements across Executor threads
682	>	* timed poll retrieves elements across Executor threads
683		*/
684		public void testPollInExecutor() {
685		final LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 701 | Line 734 | public class LinkedTransferQueueTest ext
734		try {
735		q.drainTo(null);
736		shouldThrow();
737	<	} catch (NullPointerException success) {
705	<	}
737	>	} catch (NullPointerException success) {}
738		}
739
740		/**
#	Line 713 | Line 745 | public class LinkedTransferQueueTest ext
745		try {
746		q.drainTo(q);
747		shouldThrow();
748	<	} catch (IllegalArgumentException success) {
717	<	}
748	>	} catch (IllegalArgumentException success) {}
749		}
750
751		/**
#	Line 744 | Line 775 | public class LinkedTransferQueueTest ext
775		}
776
777		/**
778	<	* drainTo empties full queue, unblocking a waiting put.
778	>	* drainTo(c) empties full queue, unblocking a waiting put.
779		*/
780		public void testDrainToWithActivePut() throws InterruptedException {
781		final LinkedTransferQueue q = populatedQueue(SIZE);
782	<	Thread t = new Thread(new CheckedRunnable() {
782	>	Thread t = newStartedThread(new CheckedRunnable() {
783		void realRun() {
784		q.put(SIZE + 1);
785		}});
755	–	t.start();
786		ArrayList l = new ArrayList();
787		q.drainTo(l);
788		assertTrue(l.size() >= SIZE);
#	Line 769 | Line 799 | public class LinkedTransferQueueTest ext
799		public void testDrainToNullN() {
800		LinkedTransferQueue q = populatedQueue(SIZE);
801		try {
802	<	q.drainTo(null, 0);
802	>	q.drainTo(null, SIZE);
803		shouldThrow();
804	<	} catch (NullPointerException success) {
775	<	}
804	>	} catch (NullPointerException success) {}
805		}
806
807		/**
#	Line 781 | Line 810 | public class LinkedTransferQueueTest ext
810		public void testDrainToSelfN() {
811		LinkedTransferQueue q = populatedQueue(SIZE);
812		try {
813	<	q.drainTo(q, 0);
813	>	q.drainTo(q, SIZE);
814		shouldThrow();
815	<	} catch (IllegalArgumentException success) {
787	<	}
815	>	} catch (IllegalArgumentException success) {}
816		}
817
818		/**
#	Line 810 | Line 838 | public class LinkedTransferQueueTest ext
838		}
839
840		/**
841	<	* poll and take decrement the waiting consumer count
841	>	* timed poll() or take() increments the waiting consumer count;
842	>	* offer(e) decrements the waiting consumer count
843		*/
844		public void testWaitingConsumer() throws InterruptedException {
845		final LinkedTransferQueue q = new LinkedTransferQueue();
846	<	final ConsumerObserver waiting = new ConsumerObserver();
847	<	new Thread(new CheckedRunnable() {
848	<	void realRun() {
846	>	assertEquals(q.getWaitingConsumerCount(), 0);
847	>	assertFalse(q.hasWaitingConsumer());
848	>
849	>	Thread t = newStartedThread(new CheckedRunnable() {
850	>	void realRun() throws InterruptedException {
851	>	Thread.sleep(SMALL_DELAY_MS);
852		threadAssertTrue(q.hasWaitingConsumer());
853	<	waiting.setWaitingConsumer(q.getWaitingConsumerCount());
853	>	threadAssertEquals(q.getWaitingConsumerCount(), 1);
854		threadAssertTrue(q.offer(new Object()));
855	<	}}).start();
855	>	threadAssertFalse(q.hasWaitingConsumer());
856	>	threadAssertEquals(q.getWaitingConsumerCount(), 0);
857	>	}});
858	>
859		assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) != null);
860	<	assertTrue(q.getWaitingConsumerCount()
861	<	< waiting.getWaitingConsumers());
860	>	assertEquals(q.getWaitingConsumerCount(), 0);
861	>	assertFalse(q.hasWaitingConsumer());
862	>	t.join();
863		}
864
865		/**
#	Line 834 | Line 870 | public class LinkedTransferQueueTest ext
870		LinkedTransferQueue q = new LinkedTransferQueue();
871		q.transfer(null);
872		shouldThrow();
873	<	} catch (NullPointerException ex) {
838	<	}
873	>	} catch (NullPointerException success) {}
874		}
875
876		/**
#	Line 846 | Line 881 | public class LinkedTransferQueueTest ext
881		final LinkedTransferQueue<Integer> q
882		= new LinkedTransferQueue<Integer>();
883
884	<	new Thread(new CheckedRunnable() {
884	>	Thread t = newStartedThread(new CheckedRunnable() {
885		void realRun() throws InterruptedException {
886		q.transfer(SIZE);
887		threadAssertTrue(q.isEmpty());
888	<	}}).start();
888	>	}});
889
890		Thread.sleep(SHORT_DELAY_MS);
891		assertEquals(1, q.size());
892		assertEquals(SIZE, (int) q.poll());
893		assertTrue(q.isEmpty());
894	+	t.join();
895		}
896
897		/**
#	Line 865 | Line 901 | public class LinkedTransferQueueTest ext
901		final LinkedTransferQueue<Integer> q
902		= new LinkedTransferQueue<Integer>();
903
904	<	Thread first = new Thread(new CheckedRunnable() {
904	>	Thread first = newStartedThread(new CheckedRunnable() {
905		void realRun() throws InterruptedException {
906		Integer i = SIZE + 1;
907		q.transfer(i);
908		threadAssertTrue(!q.contains(i));
909		threadAssertEquals(1, q.size());
910		}});
875	–	first.start();
911
912	<	Thread interruptedThread = new Thread(new CheckedInterruptedRunnable() {
913	<	void realRun() throws InterruptedException {
914	<	while (q.size() == 0)
915	<	Thread.yield();
916	<	q.transfer(SIZE);
917	<	}});
918	<	interruptedThread.start();
912	>	Thread interruptedThread = newStartedThread(
913	>	new CheckedInterruptedRunnable() {
914	>	void realRun() throws InterruptedException {
915	>	while (q.size() == 0)
916	>	Thread.yield();
917	>	q.transfer(SIZE);
918	>	}});
919
920		while (q.size() < 2)
921		Thread.yield();
#	Line 900 | Line 935 | public class LinkedTransferQueueTest ext
935		*/
936		public void testTransfer4() throws InterruptedException {
937		final LinkedTransferQueue q = new LinkedTransferQueue();
938	<	new Thread(new CheckedRunnable() {
938	>
939	>	Thread t = newStartedThread(new CheckedRunnable() {
940		void realRun() throws InterruptedException {
941		q.transfer(four);
942		threadAssertFalse(q.contains(four));
943		threadAssertEquals(three, q.poll());
944	<	}}).start();
945	<	Thread.sleep(MEDIUM_DELAY_MS);
944	>	}});
945	>
946	>	Thread.sleep(SHORT_DELAY_MS);
947		assertTrue(q.offer(three));
948		assertEquals(four, q.poll());
949	+	t.join();
950		}
951
952		/**
#	Line 919 | Line 957 | public class LinkedTransferQueueTest ext
957		final LinkedTransferQueue<Integer> q
958		= new LinkedTransferQueue<Integer>();
959
960	<	new Thread(new CheckedRunnable() {
960	>	Thread t = newStartedThread(new CheckedRunnable() {
961		void realRun() throws InterruptedException {
962		q.transfer(SIZE);
963	<	threadAssertTrue(q.isEmpty());
964	<	}}).start();
963	>	checkEmpty(q);
964	>	}});
965
966		Thread.sleep(SHORT_DELAY_MS);
967		assertEquals(SIZE, (int) q.take());
968	<	assertTrue(q.isEmpty());
968	>	checkEmpty(q);
969	>	t.join();
970		}
971
972		/**
#	Line 937 | Line 976 | public class LinkedTransferQueueTest ext
976		try {
977		final LinkedTransferQueue q = new LinkedTransferQueue();
978		q.tryTransfer(null);
979	<	this.shouldThrow();
980	<	} catch (NullPointerException ex) {
942	<	}
979	>	shouldThrow();
980	>	} catch (NullPointerException success) {}
981		}
982
983		/**
984		* tryTransfer returns false and does not enqueue if there are no
985		* consumers waiting to poll or take.
986		*/
987	<	public void testTryTransfer2() {
987	>	public void testTryTransfer2() throws InterruptedException {
988		final LinkedTransferQueue q = new LinkedTransferQueue();
989		assertFalse(q.tryTransfer(new Object()));
990		assertFalse(q.hasWaitingConsumer());
991	<	assertTrue(q.isEmpty());
954	<	assertEquals(0, q.size());
991	>	checkEmpty(q);
992		}
993
994		/**
#	Line 961 | Line 998 | public class LinkedTransferQueueTest ext
998		public void testTryTransfer3() throws InterruptedException {
999		final Object hotPotato = new Object();
1000		final LinkedTransferQueue q = new LinkedTransferQueue();
1001	<	new Thread(new CheckedRunnable() {
1001	>
1002	>	Thread t = newStartedThread(new CheckedRunnable() {
1003		void realRun() {
1004		while (! q.hasWaitingConsumer())
1005		Thread.yield();
#	Line 969 | Line 1007 | public class LinkedTransferQueueTest ext
1007		threadAssertTrue(q.isEmpty());
1008		threadAssertTrue(q.size() == 0);
1009		threadAssertTrue(q.tryTransfer(hotPotato));
1010	<	}}).start();
1011	<	assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) == hotPotato);
1012	<	assertTrue(q.isEmpty());
1010	>	}});
1011	>
1012	>	assertTrue(q.poll(MEDIUM_DELAY_MS, MILLISECONDS) == hotPotato);
1013	>	checkEmpty(q);
1014	>	t.join();
1015		}
1016
1017		/**
#	Line 981 | Line 1021 | public class LinkedTransferQueueTest ext
1021		public void testTryTransfer4() throws InterruptedException {
1022		final Object hotPotato = new Object();
1023		final LinkedTransferQueue q = new LinkedTransferQueue();
1024	<	new Thread(new CheckedRunnable() {
1024	>
1025	>	Thread t = newStartedThread(new CheckedRunnable() {
1026		void realRun() {
1027		while (! q.hasWaitingConsumer())
1028		Thread.yield();
#	Line 989 | Line 1030 | public class LinkedTransferQueueTest ext
1030		threadAssertTrue(q.isEmpty());
1031		threadAssertTrue(q.size() == 0);
1032		threadAssertTrue(q.tryTransfer(hotPotato));
1033	<	}}).start();
1033	>	}});
1034	>
1035		assertTrue(q.take() == hotPotato);
1036	<	assertTrue(q.isEmpty());
1036	>	checkEmpty(q);
1037	>	t.join();
1038		}
1039
1040		/**
#	Line 1000 | Line 1043 | public class LinkedTransferQueueTest ext
1043		*/
1044		public void testTryTransfer5() throws InterruptedException {
1045		final LinkedTransferQueue q = new LinkedTransferQueue();
1046	<	Thread toInterrupt = new Thread(new CheckedInterruptedRunnable() {
1046	>
1047	>	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
1048		void realRun() throws InterruptedException {
1049		q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
1050		}});
1051	<	toInterrupt.start();
1051	>
1052		Thread.sleep(SMALL_DELAY_MS);
1053		toInterrupt.interrupt();
1054	+	toInterrupt.join();
1055		}
1056
1057		/**
#	Line 1014 | Line 1059 | public class LinkedTransferQueueTest ext
1059		*/
1060		public void testTryTransfer6() throws InterruptedException {
1061		final LinkedTransferQueue q = new LinkedTransferQueue();
1062	<	new Thread(new CheckedRunnable() {
1062	>
1063	>	Thread t = newStartedThread(new CheckedRunnable() {
1064		void realRun() throws InterruptedException {
1065		threadAssertFalse
1066		(q.tryTransfer(new Object(),
1067		SHORT_DELAY_MS, MILLISECONDS));
1068	<	}}).start();
1069	<	Thread.sleep(LONG_DELAY_MS);
1070	<	assertTrue(q.isEmpty());
1068	>	}});
1069	>
1070	>	Thread.sleep(SMALL_DELAY_MS);
1071	>	checkEmpty(q);
1072	>	t.join();
1073		}
1074
1075		/**
#	Line 1031 | Line 1079 | public class LinkedTransferQueueTest ext
1079		public void testTryTransfer7() throws InterruptedException {
1080		final LinkedTransferQueue q = new LinkedTransferQueue();
1081		assertTrue(q.offer(four));
1082	<	new Thread(new CheckedRunnable() {
1082	>
1083	>	Thread t = newStartedThread(new CheckedRunnable() {
1084		void realRun() throws InterruptedException {
1085		threadAssertTrue(q.tryTransfer(five,
1086	<	LONG_DELAY_MS, MILLISECONDS));
1086	>	MEDIUM_DELAY_MS, MILLISECONDS));
1087		threadAssertTrue(q.isEmpty());
1088	<	}}).start();
1088	>	}});
1089	>
1090		Thread.sleep(SHORT_DELAY_MS);
1091		assertEquals(2, q.size());
1092		assertEquals(four, q.poll());
1093		assertEquals(five, q.poll());
1094	<	assertTrue(q.isEmpty());
1094	>	checkEmpty(q);
1095	>	t.join();
1096		}
1097
1098		/**
#	Line 1055 | Line 1106 | public class LinkedTransferQueueTest ext
1106		assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1107		assertEquals(1, q.size());
1108		assertEquals(four, q.poll());
1058	–	threadAssertTrue(q.isEmpty());
1109		assertNull(q.poll());
1110	+	checkEmpty(q);
1111		}
1112
1113		private LinkedTransferQueue<Integer> populatedQueue(int n) {
#	Line 1070 | Line 1121 | public class LinkedTransferQueueTest ext
1121		assertFalse(q.isEmpty());
1122		return q;
1123		}
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	–	}
1124		}

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