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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.14 by jsr166, Sat Aug 15 03:20:36 2009 UTC vs.
Revision 1.39 by jsr166, Fri Nov 5 00:17:22 2010 UTC

#	Line 18 | Line 18 | 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 {
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());
43	>	void checkEmpty(BlockingQueue q) {
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) {
45	>	assertTrue(q.isEmpty());
46	>	assertEquals(0, q.size());
47	>	assertNull(q.peek());
48	>	assertNull(q.poll());
49	>	assertNull(q.poll(0, MILLISECONDS));
50	>	assertEquals(q.toString(), "[]");
51	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
52	>	assertFalse(q.iterator().hasNext());
53	>	try {
54	>	q.element();
55	>	shouldThrow();
56	>	} catch (NoSuchElementException success) {}
57	>	try {
58	>	q.iterator().next();
59	>	shouldThrow();
60	>	} catch (NoSuchElementException success) {}
61	>	try {
62	>	q.remove();
63	>	shouldThrow();
64	>	} catch (NoSuchElementException success) {}
65	>	} catch (InterruptedException ie) {
66	>	threadUnexpectedException(ie);
67		}
68		}
69
#	Line 75 | Line 84 | public class LinkedTransferQueueTest ext
84		try {
85		new LinkedTransferQueue(null);
86		shouldThrow();
87	<	} catch (NullPointerException success) {
79	<	}
87	>	} catch (NullPointerException success) {}
88		}
89
90		/**
#	Line 88 | Line 96 | public class LinkedTransferQueueTest ext
96		Integer[] ints = new Integer[SIZE];
97		new LinkedTransferQueue(Arrays.asList(ints));
98		shouldThrow();
99	<	} catch (NullPointerException success) {
92	<	}
99	>	} catch (NullPointerException success) {}
100		}
101
102		/**
#	Line 104 | Line 111 | public class LinkedTransferQueueTest ext
111		}
112		new LinkedTransferQueue(Arrays.asList(ints));
113		shouldThrow();
114	<	} catch (NullPointerException success) {
108	<	}
114	>	} catch (NullPointerException success) {}
115		}
116
117		/**
#	Line 157 | Line 163 | public class LinkedTransferQueueTest ext
163		LinkedTransferQueue q = new LinkedTransferQueue();
164		q.offer(null);
165		shouldThrow();
166	<	} catch (NullPointerException success) {
161	<	}
166	>	} catch (NullPointerException success) {}
167		}
168
169		/**
#	Line 169 | Line 174 | public class LinkedTransferQueueTest ext
174		LinkedTransferQueue q = new LinkedTransferQueue();
175		q.add(null);
176		shouldThrow();
177	<	} catch (NullPointerException success) {
173	<	}
177	>	} catch (NullPointerException success) {}
178		}
179
180		/**
#	Line 181 | Line 185 | public class LinkedTransferQueueTest ext
185		LinkedTransferQueue q = new LinkedTransferQueue();
186		q.addAll(null);
187		shouldThrow();
188	<	} catch (NullPointerException success) {
185	<	}
188	>	} catch (NullPointerException success) {}
189		}
190
191		/**
#	Line 193 | Line 196 | public class LinkedTransferQueueTest ext
196		LinkedTransferQueue q = populatedQueue(SIZE);
197		q.addAll(q);
198		shouldThrow();
199	<	} catch (IllegalArgumentException success) {
197	<	}
199	>	} catch (IllegalArgumentException success) {}
200		}
201
202		/**
#	Line 206 | Line 208 | public class LinkedTransferQueueTest ext
208		Integer[] ints = new Integer[SIZE];
209		q.addAll(Arrays.asList(ints));
210		shouldThrow();
211	<	} catch (NullPointerException success) {
210	<	}
211	>	} catch (NullPointerException success) {}
212		}
213
214		/**
#	Line 223 | Line 224 | public class LinkedTransferQueueTest ext
224		}
225		q.addAll(Arrays.asList(ints));
226		shouldThrow();
227	<	} catch (NullPointerException success) {
227	<	}
227	>	} catch (NullPointerException success) {}
228		}
229
230		/**
#	Line 278 | Line 278 | public class LinkedTransferQueueTest ext
278		}
279
280		/**
281	<	* take blocks interruptibly when empty
282	<	*/
283	<	public void testTakeFromEmpty() throws InterruptedException {
284	<	final LinkedTransferQueue q = new LinkedTransferQueue();
285	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
286	<	void realRun() throws InterruptedException {
287	<	q.take();
288	<	}});
289	<	Thread.sleep(SHORT_DELAY_MS);
290	<	t.interrupt();
291	<	t.join();
292	<	}
293	<
294	<	/**
295	<	* Take removes existing elements until empty, then blocks interruptibly
281	>	* take removes existing elements until empty, then blocks interruptibly
282		*/
283		public void testBlockingTake() throws InterruptedException {
284	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
285	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
286	<	void realRun() throws InterruptedException {
284	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
285	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
286	>	Thread t = newStartedThread(new CheckedRunnable() {
287	>	public void realRun() throws InterruptedException {
288		for (int i = 0; i < SIZE; ++i) {
289	<	threadAssertEquals(i, (int) q.take());
289	>	assertEquals(i, (int) q.take());
290		}
291	<	q.take();
291	>	aboutToWait.countDown();
292	>	try {
293	>	q.take();
294	>	shouldThrow();
295	>	} catch (InterruptedException success) {}
296		}});
297	<	Thread.sleep(SMALL_DELAY_MS);
297	>
298	>	aboutToWait.await();
299	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
300		t.interrupt();
301	<	t.join();
301	>	awaitTermination(t, MEDIUM_DELAY_MS);
302		checkEmpty(q);
303		}
304
#	Line 322 | Line 315 | public class LinkedTransferQueueTest ext
315		}
316
317		/**
318	<	* timed pool with zero timeout succeeds when non-empty, else times out
318	>	* timed poll with zero timeout succeeds when non-empty, else times out
319		*/
320		public void testTimedPoll0() throws InterruptedException {
321		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
#	Line 334 | Line 327 | public class LinkedTransferQueueTest ext
327		}
328
329		/**
330	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
330	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
331		*/
332		public void testTimedPoll() throws InterruptedException {
333		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
334		for (int i = 0; i < SIZE; ++i) {
335		long t0 = System.nanoTime();
336	<	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
337	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
345	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
336	>	assertEquals(i, (int) q.poll(SMALL_DELAY_MS, MILLISECONDS));
337	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
338		}
339	+	long t0 = System.nanoTime();
340		assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
341	+	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
342		checkEmpty(q);
343		}
344
#	Line 353 | Line 347 | public class LinkedTransferQueueTest ext
347		* returning timeout status
348		*/
349		public void testInterruptedTimedPoll() throws InterruptedException {
350	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
351	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
352	<	void realRun() throws InterruptedException {
350	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
351	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
352	>	Thread t = newStartedThread(new CheckedRunnable() {
353	>	public void realRun() throws InterruptedException {
354		for (int i = 0; i < SIZE; ++i) {
355		long t0 = System.nanoTime();
356	<	threadAssertEquals(i, (int) q.poll(LONG_DELAY_MS,
357	<	MILLISECONDS));
358	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
359	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
356	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
357	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
358	>	}
359	>	long t0 = System.nanoTime();
360	>	aboutToWait.countDown();
361	>	try {
362	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
363	>	shouldThrow();
364	>	} catch (InterruptedException success) {
365	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
366		}
366	–	q.poll(LONG_DELAY_MS, MILLISECONDS);
367		}});
368	<	Thread.sleep(SMALL_DELAY_MS);
368	>
369	>	aboutToWait.await();
370	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
371		t.interrupt();
372	<	t.join();
372	>	awaitTermination(t, MEDIUM_DELAY_MS);
373		checkEmpty(q);
374		}
375
376		/**
377	<	* timed poll before a delayed offer fails; after offer succeeds;
378	<	* on interruption throws
377	>	* timed poll after thread interrupted throws InterruptedException
378	>	* instead of returning timeout status
379		*/
380	<	public void testTimedPollWithOffer() throws InterruptedException {
381	<	final LinkedTransferQueue q = new LinkedTransferQueue();
382	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
383	<	void realRun() throws InterruptedException {
384	<	threadAssertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
385	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
386	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
380	>	public void testTimedPollAfterInterrupt() throws InterruptedException {
381	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
382	>	Thread t = newStartedThread(new CheckedRunnable() {
383	>	public void realRun() throws InterruptedException {
384	>	Thread.currentThread().interrupt();
385	>	for (int i = 0; i < SIZE; ++i) {
386	>	long t0 = System.nanoTime();
387	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
388	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
389	>	}
390	>	try {
391	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
392	>	shouldThrow();
393	>	} catch (InterruptedException success) {}
394		}});
395	<	Thread.sleep(SMALL_DELAY_MS);
396	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
397	<	t.interrupt();
389	<	t.join();
395	>
396	>	awaitTermination(t, MEDIUM_DELAY_MS);
397	>	checkEmpty(q);
398		}
399
400		/**
#	Line 416 | Line 424 | public class LinkedTransferQueueTest ext
424		try {
425		q.element();
426		shouldThrow();
427	<	} catch (NoSuchElementException success) {
420	<	}
427	>	} catch (NoSuchElementException success) {}
428		checkEmpty(q);
429		}
430
#	Line 432 | Line 439 | public class LinkedTransferQueueTest ext
439		try {
440		q.remove();
441		shouldThrow();
442	<	} catch (NoSuchElementException success) {
436	<	}
442	>	} catch (NoSuchElementException success) {}
443		checkEmpty(q);
444		}
445
#	Line 462 | Line 468 | public class LinkedTransferQueueTest ext
468		assertTrue(q.remove(one));
469		assertTrue(q.remove(two));
470		assertTrue(q.add(three));
471	<	assertTrue(q.take() == three);
471	>	assertSame(q.take(), three);
472		}
473
474		/**
#	Line 544 | Line 550 | public class LinkedTransferQueueTest ext
550		}
551
552		/**
553	<	* toArray() contains all elements
553	>	* toArray() contains all elements in FIFO order
554		*/
555	<	public void testToArray() throws InterruptedException {
555	>	public void testToArray() {
556		LinkedTransferQueue q = populatedQueue(SIZE);
557		Object[] o = q.toArray();
558		for (int i = 0; i < o.length; i++) {
559	<	assertEquals(o[i], q.take());
559	>	assertSame(o[i], q.poll());
560		}
561		}
562
563		/**
564	<	* toArray(a) contains all elements
564	>	* toArray(a) contains all elements in FIFO order
565		*/
566	<	public void testToArray2() throws InterruptedException {
566	>	public void testToArray2() {
567		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
568		Integer[] ints = new Integer[SIZE];
569	<	ints = q.toArray(ints);
569	>	Integer[] array = q.toArray(ints);
570	>	assertSame(ints, array);
571		for (int i = 0; i < ints.length; i++) {
572	<	assertEquals(ints[i], q.take());
572	>	assertSame(ints[i], q.poll());
573		}
574		}
575
576		/**
577		* toArray(null) throws NullPointerException
578		*/
579	<	public void testToArray_BadArg() {
579	>	public void testToArray_NullArg() {
580	>	LinkedTransferQueue q = populatedQueue(SIZE);
581		try {
582	<	LinkedTransferQueue q = populatedQueue(SIZE);
575	<	Object o[] = q.toArray(null);
582	>	q.toArray(null);
583		shouldThrow();
584	<	} catch (NullPointerException success) {
578	<	}
584	>	} catch (NullPointerException success) {}
585		}
586
587		/**
588	<	* toArray(incompatible array type) throws CCE
588	>	* toArray(incompatible array type) throws ArrayStoreException
589		*/
590		public void testToArray1_BadArg() {
591	+	LinkedTransferQueue q = populatedQueue(SIZE);
592		try {
593	<	LinkedTransferQueue q = populatedQueue(SIZE);
587	<	Object o[] = q.toArray(new String[10]);
593	>	q.toArray(new String[10]);
594		shouldThrow();
595	<	} catch (ArrayStoreException success) {
590	<	}
595	>	} catch (ArrayStoreException success) {}
596		}
597
598		/**
#	Line 617 | Line 622 | public class LinkedTransferQueueTest ext
622		it.remove();
623
624		it = q.iterator();
625	<	assertEquals(it.next(), one);
626	<	assertEquals(it.next(), three);
625	>	assertSame(it.next(), one);
626	>	assertSame(it.next(), three);
627		assertFalse(it.hasNext());
628		}
629
#	Line 671 | Line 676 | public class LinkedTransferQueueTest ext
676		*/
677		public void testOfferInExecutor() {
678		final LinkedTransferQueue q = new LinkedTransferQueue();
679	<	q.add(one);
675	<	q.add(two);
679	>	final CountDownLatch threadsStarted = new CountDownLatch(2);
680		ExecutorService executor = Executors.newFixedThreadPool(2);
681
682		executor.execute(new CheckedRunnable() {
683	<	void realRun() {
684	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS,
685	<	MILLISECONDS));
683	>	public void realRun() throws InterruptedException {
684	>	threadsStarted.countDown();
685	>	threadsStarted.await();
686	>	assertTrue(q.offer(one, MEDIUM_DELAY_MS, MILLISECONDS));
687		}});
688
689		executor.execute(new CheckedRunnable() {
690	<	void realRun() throws InterruptedException {
691	<	Thread.sleep(SMALL_DELAY_MS);
692	<	threadAssertEquals(one, q.take());
690	>	public void realRun() throws InterruptedException {
691	>	threadsStarted.countDown();
692	>	threadsStarted.await();
693	>	assertSame(one, q.take());
694	>	checkEmpty(q);
695		}});
696
697		joinPool(executor);
#	Line 695 | Line 702 | public class LinkedTransferQueueTest ext
702		*/
703		public void testPollInExecutor() {
704		final LinkedTransferQueue q = new LinkedTransferQueue();
705	+	final CountDownLatch threadsStarted = new CountDownLatch(2);
706		ExecutorService executor = Executors.newFixedThreadPool(2);
707
708		executor.execute(new CheckedRunnable() {
709	<	void realRun() throws InterruptedException {
710	<	threadAssertNull(q.poll());
711	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS,
712	<	MILLISECONDS));
713	<	threadAssertTrue(q.isEmpty());
709	>	public void realRun() throws InterruptedException {
710	>	assertNull(q.poll());
711	>	threadsStarted.countDown();
712	>	threadsStarted.await();
713	>	assertSame(one, q.poll(SMALL_DELAY_MS, MILLISECONDS));
714	>	checkEmpty(q);
715		}});
716
717		executor.execute(new CheckedRunnable() {
718	<	void realRun() throws InterruptedException {
719	<	Thread.sleep(SMALL_DELAY_MS);
718	>	public void realRun() throws InterruptedException {
719	>	threadsStarted.countDown();
720	>	threadsStarted.await();
721		q.put(one);
722		}});
723
#	Line 733 | Line 743 | public class LinkedTransferQueueTest ext
743		LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
744
745		assertEquals(q.size(), r.size());
746	+	assertEquals(q.toString(), r.toString());
747	+	assertTrue(Arrays.equals(q.toArray(), r.toArray()));
748		while (!q.isEmpty()) {
749		assertEquals(q.remove(), r.remove());
750		}
#	Line 746 | Line 758 | public class LinkedTransferQueueTest ext
758		try {
759		q.drainTo(null);
760		shouldThrow();
761	<	} catch (NullPointerException success) {
750	<	}
761	>	} catch (NullPointerException success) {}
762		}
763
764		/**
#	Line 758 | Line 769 | public class LinkedTransferQueueTest ext
769		try {
770		q.drainTo(q);
771		shouldThrow();
772	<	} catch (IllegalArgumentException success) {
762	<	}
772	>	} catch (IllegalArgumentException success) {}
773		}
774
775		/**
#	Line 794 | Line 804 | public class LinkedTransferQueueTest ext
804		public void testDrainToWithActivePut() throws InterruptedException {
805		final LinkedTransferQueue q = populatedQueue(SIZE);
806		Thread t = newStartedThread(new CheckedRunnable() {
807	<	void realRun() {
807	>	public void realRun() {
808		q.put(SIZE + 1);
809		}});
810		ArrayList l = new ArrayList();
#	Line 803 | Line 813 | public class LinkedTransferQueueTest ext
813		for (int i = 0; i < SIZE; ++i) {
814		assertEquals(l.get(i), i);
815		}
816	<	t.join();
816	>	awaitTermination(t, MEDIUM_DELAY_MS);
817		assertTrue(q.size() + l.size() >= SIZE);
818		}
819
#	Line 815 | Line 825 | public class LinkedTransferQueueTest ext
825		try {
826		q.drainTo(null, SIZE);
827		shouldThrow();
828	<	} catch (NullPointerException success) {
819	<	}
828	>	} catch (NullPointerException success) {}
829		}
830
831		/**
#	Line 827 | Line 836 | public class LinkedTransferQueueTest ext
836		try {
837		q.drainTo(q, SIZE);
838		shouldThrow();
839	<	} catch (IllegalArgumentException success) {
831	<	}
839	>	} catch (IllegalArgumentException success) {}
840		}
841
842		/**
843	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
843	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
844		*/
845		public void testDrainToN() {
846		LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 861 | Line 869 | public class LinkedTransferQueueTest ext
869		final LinkedTransferQueue q = new LinkedTransferQueue();
870		assertEquals(q.getWaitingConsumerCount(), 0);
871		assertFalse(q.hasWaitingConsumer());
872	+	final CountDownLatch threadStarted = new CountDownLatch(1);
873
874		Thread t = newStartedThread(new CheckedRunnable() {
875	<	void realRun() throws InterruptedException {
876	<	Thread.sleep(SMALL_DELAY_MS);
877	<	threadAssertTrue(q.hasWaitingConsumer());
878	<	threadAssertEquals(q.getWaitingConsumerCount(), 1);
879	<	threadAssertTrue(q.offer(new Object()));
871	<	threadAssertFalse(q.hasWaitingConsumer());
872	<	threadAssertEquals(q.getWaitingConsumerCount(), 0);
875	>	public void realRun() throws InterruptedException {
876	>	threadStarted.countDown();
877	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
878	>	assertEquals(q.getWaitingConsumerCount(), 0);
879	>	assertFalse(q.hasWaitingConsumer());
880		}});
881
882	<	assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) != null);
882	>	threadStarted.await();
883	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
884	>	assertEquals(q.getWaitingConsumerCount(), 1);
885	>	assertTrue(q.hasWaitingConsumer());
886	>
887	>	assertTrue(q.offer(one));
888		assertEquals(q.getWaitingConsumerCount(), 0);
889		assertFalse(q.hasWaitingConsumer());
890	<	t.join();
890	>
891	>	awaitTermination(t, MEDIUM_DELAY_MS);
892		}
893
894		/**
#	Line 886 | Line 899 | public class LinkedTransferQueueTest ext
899		LinkedTransferQueue q = new LinkedTransferQueue();
900		q.transfer(null);
901		shouldThrow();
902	<	} catch (NullPointerException ex) {
890	<	}
902	>	} catch (NullPointerException success) {}
903		}
904
905		/**
#	Line 897 | Line 909 | public class LinkedTransferQueueTest ext
909		public void testTransfer2() throws InterruptedException {
910		final LinkedTransferQueue<Integer> q
911		= new LinkedTransferQueue<Integer>();
912	+	final CountDownLatch threadStarted = new CountDownLatch(1);
913
914		Thread t = newStartedThread(new CheckedRunnable() {
915	<	void realRun() throws InterruptedException {
916	<	q.transfer(SIZE);
917	<	threadAssertTrue(q.isEmpty());
915	>	public void realRun() throws InterruptedException {
916	>	threadStarted.countDown();
917	>	q.transfer(five);
918	>	checkEmpty(q);
919		}});
920
921	<	Thread.sleep(SHORT_DELAY_MS);
921	>	threadStarted.await();
922	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
923		assertEquals(1, q.size());
924	<	assertEquals(SIZE, (int) q.poll());
925	<	assertTrue(q.isEmpty());
926	<	t.join();
924	>	assertSame(five, q.poll());
925	>	checkEmpty(q);
926	>	awaitTermination(t, MEDIUM_DELAY_MS);
927		}
928
929		/**
#	Line 919 | Line 934 | public class LinkedTransferQueueTest ext
934		= new LinkedTransferQueue<Integer>();
935
936		Thread first = newStartedThread(new CheckedRunnable() {
937	<	void realRun() throws InterruptedException {
938	<	Integer i = SIZE + 1;
939	<	q.transfer(i);
940	<	threadAssertTrue(!q.contains(i));
926	<	threadAssertEquals(1, q.size());
937	>	public void realRun() throws InterruptedException {
938	>	q.transfer(four);
939	>	assertTrue(!q.contains(four));
940	>	assertEquals(1, q.size());
941		}});
942
943		Thread interruptedThread = newStartedThread(
944		new CheckedInterruptedRunnable() {
945	<	void realRun() throws InterruptedException {
946	<	while (q.size() == 0)
945	>	public void realRun() throws InterruptedException {
946	>	while (q.isEmpty())
947		Thread.yield();
948	<	q.transfer(SIZE);
948	>	q.transfer(five);
949		}});
950
951		while (q.size() < 2)
952		Thread.yield();
953		assertEquals(2, q.size());
954	<	assertEquals(SIZE + 1, (int) q.poll());
954	>	assertSame(four, q.poll());
955		first.join();
956		assertEquals(1, q.size());
957		interruptedThread.interrupt();
958		interruptedThread.join();
959	<	assertEquals(0, q.size());
946	<	assertTrue(q.isEmpty());
959	>	checkEmpty(q);
960		}
961
962		/**
#	Line 954 | Line 967 | public class LinkedTransferQueueTest ext
967		final LinkedTransferQueue q = new LinkedTransferQueue();
968
969		Thread t = newStartedThread(new CheckedRunnable() {
970	<	void realRun() throws InterruptedException {
970	>	public void realRun() throws InterruptedException {
971		q.transfer(four);
972	<	threadAssertFalse(q.contains(four));
973	<	threadAssertEquals(three, q.poll());
972	>	assertFalse(q.contains(four));
973	>	assertSame(three, q.poll());
974		}});
975
976	<	Thread.sleep(SHORT_DELAY_MS);
976	>	while (q.isEmpty())
977	>	Thread.yield();
978	>	assertFalse(q.isEmpty());
979	>	assertEquals(1, q.size());
980		assertTrue(q.offer(three));
981	<	assertEquals(four, q.poll());
982	<	t.join();
981	>	assertSame(four, q.poll());
982	>	awaitTermination(t, MEDIUM_DELAY_MS);
983		}
984
985		/**
#	Line 975 | Line 991 | public class LinkedTransferQueueTest ext
991		= new LinkedTransferQueue<Integer>();
992
993		Thread t = newStartedThread(new CheckedRunnable() {
994	<	void realRun() throws InterruptedException {
995	<	q.transfer(SIZE);
994	>	public void realRun() throws InterruptedException {
995	>	q.transfer(four);
996		checkEmpty(q);
997		}});
998
999	<	Thread.sleep(SHORT_DELAY_MS);
1000	<	assertEquals(SIZE, (int) q.take());
999	>	while (q.isEmpty())
1000	>	Thread.yield();
1001	>	assertFalse(q.isEmpty());
1002	>	assertEquals(1, q.size());
1003	>	assertSame(four, q.take());
1004		checkEmpty(q);
1005	<	t.join();
1005	>	awaitTermination(t, MEDIUM_DELAY_MS);
1006		}
1007
1008		/**
#	Line 994 | Line 1013 | public class LinkedTransferQueueTest ext
1013		final LinkedTransferQueue q = new LinkedTransferQueue();
1014		q.tryTransfer(null);
1015		shouldThrow();
1016	<	} catch (NullPointerException ex) {
998	<	}
1016	>	} catch (NullPointerException success) {}
1017		}
1018
1019		/**
#	Line 1018 | Line 1036 | public class LinkedTransferQueueTest ext
1036		final LinkedTransferQueue q = new LinkedTransferQueue();
1037
1038		Thread t = newStartedThread(new CheckedRunnable() {
1039	<	void realRun() {
1039	>	public void realRun() {
1040		while (! q.hasWaitingConsumer())
1041		Thread.yield();
1042	<	threadAssertTrue(q.hasWaitingConsumer());
1043	<	threadAssertTrue(q.isEmpty());
1044	<	threadAssertTrue(q.size() == 0);
1027	<	threadAssertTrue(q.tryTransfer(hotPotato));
1042	>	assertTrue(q.hasWaitingConsumer());
1043	>	checkEmpty(q);
1044	>	assertTrue(q.tryTransfer(hotPotato));
1045		}});
1046
1047	<	assertTrue(q.poll(MEDIUM_DELAY_MS, MILLISECONDS) == hotPotato);
1047	>	assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
1048		checkEmpty(q);
1049	<	t.join();
1049	>	awaitTermination(t, MEDIUM_DELAY_MS);
1050		}
1051
1052		/**
#	Line 1041 | Line 1058 | public class LinkedTransferQueueTest ext
1058		final LinkedTransferQueue q = new LinkedTransferQueue();
1059
1060		Thread t = newStartedThread(new CheckedRunnable() {
1061	<	void realRun() {
1061	>	public void realRun() {
1062		while (! q.hasWaitingConsumer())
1063		Thread.yield();
1064	<	threadAssertTrue(q.hasWaitingConsumer());
1065	<	threadAssertTrue(q.isEmpty());
1066	<	threadAssertTrue(q.size() == 0);
1050	<	threadAssertTrue(q.tryTransfer(hotPotato));
1064	>	assertTrue(q.hasWaitingConsumer());
1065	>	checkEmpty(q);
1066	>	assertTrue(q.tryTransfer(hotPotato));
1067		}});
1068
1069	<	assertTrue(q.take() == hotPotato);
1069	>	assertSame(q.take(), hotPotato);
1070		checkEmpty(q);
1071	<	t.join();
1071	>	awaitTermination(t, MEDIUM_DELAY_MS);
1072		}
1073
1074		/**
#	Line 1061 | Line 1077 | public class LinkedTransferQueueTest ext
1077		*/
1078		public void testTryTransfer5() throws InterruptedException {
1079		final LinkedTransferQueue q = new LinkedTransferQueue();
1080	+	final CountDownLatch threadStarted = new CountDownLatch(1);
1081
1082	<	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
1083	<	void realRun() throws InterruptedException {
1084	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
1082	>	Thread t = newStartedThread(new CheckedRunnable() {
1083	>	public void realRun() throws InterruptedException {
1084	>	long t0 = System.nanoTime();
1085	>	threadStarted.countDown();
1086	>	try {
1087	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
1088	>	shouldThrow();
1089	>	} catch (InterruptedException success) {}
1090	>	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
1091		}});
1092
1093	<	Thread.sleep(SMALL_DELAY_MS);
1094	<	toInterrupt.interrupt();
1095	<	toInterrupt.join();
1093	>	threadStarted.await();
1094	>	Thread.sleep(SHORT_DELAY_MS);
1095	>	t.interrupt();
1096	>	awaitTermination(t, MEDIUM_DELAY_MS);
1097	>	checkEmpty(q);
1098		}
1099
1100		/**
1101	<	* tryTransfer gives up after the timeout and return false
1101	>	* tryTransfer gives up after the timeout and returns false
1102		*/
1103		public void testTryTransfer6() throws InterruptedException {
1104		final LinkedTransferQueue q = new LinkedTransferQueue();
1105
1106		Thread t = newStartedThread(new CheckedRunnable() {
1107	<	void realRun() throws InterruptedException {
1108	<	threadAssertFalse
1109	<	(q.tryTransfer(new Object(),
1110	<	SHORT_DELAY_MS, MILLISECONDS));
1107	>	public void realRun() throws InterruptedException {
1108	>	long t0 = System.nanoTime();
1109	>	assertFalse(q.tryTransfer(new Object(),
1110	>	SHORT_DELAY_MS, MILLISECONDS));
1111	>	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
1112	>	checkEmpty(q);
1113		}});
1114
1115	<	Thread.sleep(SMALL_DELAY_MS);
1115	>	awaitTermination(t, MEDIUM_DELAY_MS);
1116		checkEmpty(q);
1090	–	t.join();
1117		}
1118
1119		/**
#	Line 1099 | Line 1125 | public class LinkedTransferQueueTest ext
1125		assertTrue(q.offer(four));
1126
1127		Thread t = newStartedThread(new CheckedRunnable() {
1128	<	void realRun() throws InterruptedException {
1129	<	threadAssertTrue(q.tryTransfer(five,
1130	<	MEDIUM_DELAY_MS, MILLISECONDS));
1105	<	threadAssertTrue(q.isEmpty());
1128	>	public void realRun() throws InterruptedException {
1129	>	assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
1130	>	checkEmpty(q);
1131		}});
1132
1133	<	Thread.sleep(SHORT_DELAY_MS);
1133	>	while (q.size() != 2)
1134	>	Thread.yield();
1135		assertEquals(2, q.size());
1136	<	assertEquals(four, q.poll());
1137	<	assertEquals(five, q.poll());
1136	>	assertSame(four, q.poll());
1137	>	assertSame(five, q.poll());
1138		checkEmpty(q);
1139	<	t.join();
1139	>	awaitTermination(t, MEDIUM_DELAY_MS);
1140		}
1141
1142		/**
#	Line 1121 | Line 1147 | public class LinkedTransferQueueTest ext
1147		final LinkedTransferQueue q = new LinkedTransferQueue();
1148		assertTrue(q.offer(four));
1149		assertEquals(1, q.size());
1150	+	long t0 = System.nanoTime();
1151		assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1152	+	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
1153		assertEquals(1, q.size());
1154	<	assertEquals(four, q.poll());
1154	>	assertSame(four, q.poll());
1155		assertNull(q.poll());
1156		checkEmpty(q);
1157		}
1158
1159		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1160		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1161	<	assertTrue(q.isEmpty());
1161	>	checkEmpty(q);
1162		for (int i = 0; i < n; i++) {
1163		assertEquals(i, q.size());
1164		assertTrue(q.offer(i));

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