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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 1.41 by jsr166, Thu Nov 18 18:49:44 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(BlockingQueue q) {
44	>	try {
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
70		/**
#	Line 48 | Line 84 | public class LinkedTransferQueueTest ext
84		try {
85		new LinkedTransferQueue(null);
86		shouldThrow();
87	<	} catch (NullPointerException success) {
52	<	}
87	>	} catch (NullPointerException success) {}
88		}
89
90		/**
#	Line 61 | Line 96 | public class LinkedTransferQueueTest ext
96		Integer[] ints = new Integer[SIZE];
97		new LinkedTransferQueue(Arrays.asList(ints));
98		shouldThrow();
99	<	} catch (NullPointerException success) {
65	<	}
99	>	} catch (NullPointerException success) {}
100		}
101
102		/**
#	Line 77 | Line 111 | public class LinkedTransferQueueTest ext
111		}
112		new LinkedTransferQueue(Arrays.asList(ints));
113		shouldThrow();
114	<	} catch (NullPointerException success) {
81	<	}
114	>	} catch (NullPointerException success) {}
115		}
116
117		/**
118		* Queue contains all elements of the collection it is initialized by
119		*/
120		public void testConstructor5() {
121	<	try {
122	<	Integer[] ints = new Integer[SIZE];
123	<	for (int i = 0; i < SIZE; ++i) {
124	<	ints[i] = i;
125	<	}
126	<	LinkedTransferQueue q
127	<	= new LinkedTransferQueue(Arrays.asList(ints));
128	<	for (int i = 0; i < SIZE; ++i) {
129	<	assertEquals(ints[i], q.poll());
130	<	}
131	<	} finally {
121	>	Integer[] ints = new Integer[SIZE];
122	>	for (int i = 0; i < SIZE; ++i) {
123	>	ints[i] = i;
124	>	}
125	>	List intList = Arrays.asList(ints);
126	>	LinkedTransferQueue q
127	>	= new LinkedTransferQueue(intList);
128	>	assertEquals(q.size(), intList.size());
129	>	assertEquals(q.toString(), intList.toString());
130	>	assertTrue(Arrays.equals(q.toArray(),
131	>	intList.toArray()));
132	>	assertTrue(Arrays.equals(q.toArray(new Object[0]),
133	>	intList.toArray(new Object[0])));
134	>	assertTrue(Arrays.equals(q.toArray(new Object[SIZE]),
135	>	intList.toArray(new Object[SIZE])));
136	>	for (int i = 0; i < SIZE; ++i) {
137	>	assertEquals(ints[i], q.poll());
138		}
139		}
140
141		/**
142	<	* Remaining capacity never decrease nor increase on add or remove
142	>	* remainingCapacity() always returns Integer.MAX_VALUE
143		*/
144		public void testRemainingCapacity() {
145		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
#	Line 124 | Line 163 | public class LinkedTransferQueueTest ext
163		LinkedTransferQueue q = new LinkedTransferQueue();
164		q.offer(null);
165		shouldThrow();
166	<	} catch (NullPointerException success) {
128	<	}
166	>	} catch (NullPointerException success) {}
167		}
168
169		/**
#	Line 136 | Line 174 | public class LinkedTransferQueueTest ext
174		LinkedTransferQueue q = new LinkedTransferQueue();
175		q.add(null);
176		shouldThrow();
177	<	} catch (NullPointerException success) {
140	<	}
177	>	} catch (NullPointerException success) {}
178		}
179
180		/**
#	Line 148 | Line 185 | public class LinkedTransferQueueTest ext
185		LinkedTransferQueue q = new LinkedTransferQueue();
186		q.addAll(null);
187		shouldThrow();
188	<	} catch (NullPointerException success) {
152	<	}
188	>	} catch (NullPointerException success) {}
189		}
190
191		/**
#	Line 160 | Line 196 | public class LinkedTransferQueueTest ext
196		LinkedTransferQueue q = populatedQueue(SIZE);
197		q.addAll(q);
198		shouldThrow();
199	<	} catch (IllegalArgumentException success) {
164	<	}
199	>	} catch (IllegalArgumentException success) {}
200		}
201
202		/**
#	Line 173 | Line 208 | public class LinkedTransferQueueTest ext
208		Integer[] ints = new Integer[SIZE];
209		q.addAll(Arrays.asList(ints));
210		shouldThrow();
211	<	} catch (NullPointerException success) {
177	<	}
211	>	} catch (NullPointerException success) {}
212		}
213
214		/**
#	Line 190 | Line 224 | public class LinkedTransferQueueTest ext
224		}
225		q.addAll(Arrays.asList(ints));
226		shouldThrow();
227	<	} catch (NullPointerException success) {
194	<	}
227	>	} catch (NullPointerException success) {}
228		}
229
230		/**
#	Line 228 | 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		}
234	–	assertEquals(q.size(), SIZE);
268		}
269
270		/**
#	Line 245 | Line 278 | public class LinkedTransferQueueTest ext
278		}
279
280		/**
281	<	* take blocks interruptibly when empty
249	<	*/
250	<	public void testTakeFromEmpty() throws InterruptedException {
251	<	final LinkedTransferQueue q = new LinkedTransferQueue();
252	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
253	<	void realRun() throws InterruptedException {
254	<	q.take();
255	<	}});
256	<	t.start();
257	<	Thread.sleep(SHORT_DELAY_MS);
258	<	t.interrupt();
259	<	t.join();
260	<	}
261	<
262	<	/**
263	<	* 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	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
285	<	void realRun() throws InterruptedException {
286	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
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	<	t.start();
298	<	Thread.sleep(SHORT_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
305		/**
306		* poll succeeds unless empty
307		*/
308	<	public void testPoll() {
308	>	public void testPoll() throws InterruptedException {
309		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
310		for (int i = 0; i < SIZE; ++i) {
311		assertEquals(i, (int) q.poll());
312		}
313		assertNull(q.poll());
314	+	checkEmpty(q);
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 297 | Line 323 | public class LinkedTransferQueueTest ext
323		assertEquals(i, (int) q.poll(0, MILLISECONDS));
324		}
325		assertNull(q.poll(0, MILLISECONDS));
326	+	checkEmpty(q);
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	<	assertEquals(i, (int) q.poll(SHORT_DELAY_MS, MILLISECONDS));
335	>	long t0 = System.nanoTime();
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
345		/**
#	Line 315 | Line 347 | public class LinkedTransferQueueTest ext
347		* returning timeout status
348		*/
349		public void testInterruptedTimedPoll() throws InterruptedException {
350	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
351	<	void realRun() throws InterruptedException {
352	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
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	<	threadAssertEquals(i, (int) q.poll(SHORT_DELAY_MS,
356	<	MILLISECONDS));
355	>	long t0 = System.nanoTime();
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		}
325	–	q.poll(SHORT_DELAY_MS, MILLISECONDS);
367		}});
368	<	t.start();
369	<	Thread.sleep(SHORT_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 = new Thread(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	<	t.start();
396	<	Thread.sleep(SMALL_DELAY_MS);
397	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
348	<	t.interrupt();
349	<	t.join();
395	>
396	>	awaitTermination(t, MEDIUM_DELAY_MS);
397	>	checkEmpty(q);
398		}
399
400		/**
401		* peek returns next element, or null if empty
402		*/
403	<	public void testPeek() {
403	>	public void testPeek() throws InterruptedException {
404		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
405		for (int i = 0; i < SIZE; ++i) {
406		assertEquals(i, (int) q.peek());
#	Line 361 | Line 409 | public class LinkedTransferQueueTest ext
409		i != (int) q.peek());
410		}
411		assertNull(q.peek());
412	+	checkEmpty(q);
413		}
414
415		/**
416		* element returns next element, or throws NoSuchElementException if empty
417		*/
418	<	public void testElement() {
418	>	public void testElement() throws InterruptedException {
419		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
420		for (int i = 0; i < SIZE; ++i) {
421		assertEquals(i, (int) q.element());
#	Line 375 | Line 424 | public class LinkedTransferQueueTest ext
424		try {
425		q.element();
426		shouldThrow();
427	<	} catch (NoSuchElementException success) {
428	<	}
427	>	} catch (NoSuchElementException success) {}
428	>	checkEmpty(q);
429		}
430
431		/**
432		* remove removes next element, or throws NoSuchElementException if empty
433		*/
434	<	public void testRemove() {
434	>	public void testRemove() throws InterruptedException {
435		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
436		for (int i = 0; i < SIZE; ++i) {
437		assertEquals(i, (int) q.remove());
#	Line 390 | Line 439 | public class LinkedTransferQueueTest ext
439		try {
440		q.remove();
441		shouldThrow();
442	<	} catch (NoSuchElementException success) {
443	<	}
442	>	} catch (NoSuchElementException success) {}
443	>	checkEmpty(q);
444		}
445
446		/**
447		* remove(x) removes x and returns true if present
448		*/
449	<	public void testRemoveElement() {
449	>	public void testRemoveElement() throws InterruptedException {
450		LinkedTransferQueue q = populatedQueue(SIZE);
451		for (int i = 1; i < SIZE; i += 2) {
452		assertTrue(q.remove(i));
#	Line 406 | Line 455 | public class LinkedTransferQueueTest ext
455		assertTrue(q.remove(i));
456		assertFalse(q.remove(i + 1));
457		}
458	<	assertTrue(q.isEmpty());
458	>	checkEmpty(q);
459		}
460
461		/**
#	Line 419 | 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() != null);
471	>	assertSame(q.take(), three);
472		}
473
474		/**
#	Line 437 | Line 486 | public class LinkedTransferQueueTest ext
486		/**
487		* clear removes all elements
488		*/
489	<	public void testClear() {
489	>	public void testClear() throws InterruptedException {
490		LinkedTransferQueue q = populatedQueue(SIZE);
491		q.clear();
492	<	assertTrue(q.isEmpty());
444	<	assertEquals(0, q.size());
492	>	checkEmpty(q);
493		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
494		q.add(one);
495		assertFalse(q.isEmpty());
496	+	assertEquals(1, q.size());
497		assertTrue(q.contains(one));
498		q.clear();
499	<	assertTrue(q.isEmpty());
499	>	checkEmpty(q);
500		}
501
502		/**
#	Line 501 | 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);
532	<	Object o[] = q.toArray(null);
582	>	q.toArray(null);
583		shouldThrow();
584	<	} catch (NullPointerException success) {
535	<	}
584	>	} catch (NullPointerException success) {}
585		}
586
587		/**
588	<	* toArray with 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);
544	<	Object o[] = q.toArray(new String[10]);
593	>	q.toArray(new String[10]);
594		shouldThrow();
595	<	} catch (ArrayStoreException success) {
547	<	}
595	>	} catch (ArrayStoreException success) {}
596		}
597
598		/**
#	Line 553 | Line 601 | public class LinkedTransferQueueTest ext
601		public void testIterator() throws InterruptedException {
602		LinkedTransferQueue q = populatedQueue(SIZE);
603		Iterator it = q.iterator();
604	+	int i = 0;
605		while (it.hasNext()) {
606	<	assertEquals(it.next(), q.take());
606	>	assertEquals(it.next(), i++);
607		}
608	+	assertEquals(i, SIZE);
609		}
610
611		/**
612	<	* iterator.remove removes current element
612	>	* iterator.remove() removes current element
613		*/
614		public void testIteratorRemove() {
615		final LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 572 | 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 626 | Line 676 | public class LinkedTransferQueueTest ext
676		*/
677		public void testOfferInExecutor() {
678		final LinkedTransferQueue q = new LinkedTransferQueue();
679	<	q.add(one);
630	<	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);
698		}
699
700		/**
701	<	* poll retrieves elements across Executor threads
701	>	* timed poll retrieves elements across Executor threads
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 688 | 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 701 | Line 758 | public class LinkedTransferQueueTest ext
758		try {
759		q.drainTo(null);
760		shouldThrow();
761	<	} catch (NullPointerException success) {
705	<	}
761	>	} catch (NullPointerException success) {}
762		}
763
764		/**
#	Line 713 | Line 769 | public class LinkedTransferQueueTest ext
769		try {
770		q.drainTo(q);
771		shouldThrow();
772	<	} catch (IllegalArgumentException success) {
717	<	}
772	>	} catch (IllegalArgumentException success) {}
773		}
774
775		/**
#	Line 744 | Line 799 | public class LinkedTransferQueueTest ext
799		}
800
801		/**
802	<	* drainTo empties full queue, unblocking a waiting put.
802	>	* drainTo(c) empties full queue, unblocking a waiting put.
803		*/
804		public void testDrainToWithActivePut() throws InterruptedException {
805		final LinkedTransferQueue q = populatedQueue(SIZE);
806	<	Thread t = new Thread(new CheckedRunnable() {
807	<	void realRun() {
806	>	Thread t = newStartedThread(new CheckedRunnable() {
807	>	public void realRun() {
808		q.put(SIZE + 1);
809		}});
755	–	t.start();
810		ArrayList l = new ArrayList();
811		q.drainTo(l);
812		assertTrue(l.size() >= SIZE);
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 769 | Line 823 | public class LinkedTransferQueueTest ext
823		public void testDrainToNullN() {
824		LinkedTransferQueue q = populatedQueue(SIZE);
825		try {
826	<	q.drainTo(null, 0);
826	>	q.drainTo(null, SIZE);
827		shouldThrow();
828	<	} catch (NullPointerException success) {
775	<	}
828	>	} catch (NullPointerException success) {}
829		}
830
831		/**
#	Line 781 | Line 834 | public class LinkedTransferQueueTest ext
834		public void testDrainToSelfN() {
835		LinkedTransferQueue q = populatedQueue(SIZE);
836		try {
837	<	q.drainTo(q, 0);
837	>	q.drainTo(q, SIZE);
838		shouldThrow();
839	<	} catch (IllegalArgumentException success) {
787	<	}
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 810 | Line 862 | public class LinkedTransferQueueTest ext
862		}
863
864		/**
865	<	* poll and take decrement the waiting consumer count
865	>	* timed poll() or take() increments the waiting consumer count;
866	>	* offer(e) decrements the waiting consumer count
867		*/
868		public void testWaitingConsumer() throws InterruptedException {
869		final LinkedTransferQueue q = new LinkedTransferQueue();
870	<	final ConsumerObserver waiting = new ConsumerObserver();
871	<	new Thread(new CheckedRunnable() {
872	<	void realRun() {
873	<	threadAssertTrue(q.hasWaitingConsumer());
874	<	waiting.setWaitingConsumer(q.getWaitingConsumerCount());
875	<	threadAssertTrue(q.offer(new Object()));
876	<	}}).start();
877	<	assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) != null);
878	<	assertTrue(q.getWaitingConsumerCount()
879	<	< waiting.getWaitingConsumers());
870	>	assertEquals(q.getWaitingConsumerCount(), 0);
871	>	assertFalse(q.hasWaitingConsumer());
872	>	final CountDownLatch threadStarted = new CountDownLatch(1);
873	>
874	>	Thread t = newStartedThread(new CheckedRunnable() {
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	>	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	>
891	>	awaitTermination(t, MEDIUM_DELAY_MS);
892		}
893
894		/**
#	Line 834 | Line 899 | public class LinkedTransferQueueTest ext
899		LinkedTransferQueue q = new LinkedTransferQueue();
900		q.transfer(null);
901		shouldThrow();
902	<	} catch (NullPointerException ex) {
838	<	}
902	>	} catch (NullPointerException success) {}
903		}
904
905		/**
#	Line 845 | 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	<	new Thread(new CheckedRunnable() {
915	<	void realRun() throws InterruptedException {
916	<	q.transfer(SIZE);
917	<	threadAssertTrue(q.isEmpty());
918	<	}}).start();
914	>	Thread t = newStartedThread(new CheckedRunnable() {
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());
924	>	assertSame(five, q.poll());
925	>	checkEmpty(q);
926	>	awaitTermination(t, MEDIUM_DELAY_MS);
927		}
928
929		/**
#	Line 865 | Line 933 | public class LinkedTransferQueueTest ext
933		final LinkedTransferQueue<Integer> q
934		= new LinkedTransferQueue<Integer>();
935
936	<	Thread first = new Thread(new CheckedRunnable() {
937	<	void realRun() throws InterruptedException {
938	<	Integer i = SIZE + 1;
939	<	q.transfer(i);
940	<	threadAssertTrue(!q.contains(i));
873	<	threadAssertEquals(1, q.size());
936	>	Thread first = newStartedThread(new CheckedRunnable() {
937	>	public void realRun() throws InterruptedException {
938	>	q.transfer(four);
939	>	assertTrue(!q.contains(four));
940	>	assertEquals(1, q.size());
941		}});
875	–	first.start();
942
943	<	Thread interruptedThread = new Thread(new CheckedInterruptedRunnable() {
944	<	void realRun() throws InterruptedException {
945	<	while (q.size() == 0)
946	<	Thread.yield();
947	<	q.transfer(SIZE);
948	<	}});
949	<	interruptedThread.start();
943	>	Thread interruptedThread = newStartedThread(
944	>	new CheckedInterruptedRunnable() {
945	>	public void realRun() throws InterruptedException {
946	>	while (q.isEmpty())
947	>	Thread.yield();
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());
894	<	assertTrue(q.isEmpty());
959	>	checkEmpty(q);
960		}
961
962		/**
#	Line 900 | Line 965 | public class LinkedTransferQueueTest ext
965		*/
966		public void testTransfer4() throws InterruptedException {
967		final LinkedTransferQueue q = new LinkedTransferQueue();
968	<	new Thread(new CheckedRunnable() {
969	<	void realRun() throws InterruptedException {
968	>
969	>	Thread t = newStartedThread(new CheckedRunnable() {
970	>	public void realRun() throws InterruptedException {
971		q.transfer(four);
972	<	threadAssertFalse(q.contains(four));
973	<	threadAssertEquals(three, q.poll());
974	<	}}).start();
975	<	Thread.sleep(MEDIUM_DELAY_MS);
972	>	assertFalse(q.contains(four));
973	>	assertSame(three, q.poll());
974	>	}});
975	>
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());
981	>	assertSame(four, q.poll());
982	>	awaitTermination(t, MEDIUM_DELAY_MS);
983		}
984
985		/**
#	Line 919 | Line 990 | public class LinkedTransferQueueTest ext
990		final LinkedTransferQueue<Integer> q
991		= new LinkedTransferQueue<Integer>();
992
993	<	new Thread(new CheckedRunnable() {
994	<	void realRun() throws InterruptedException {
995	<	q.transfer(SIZE);
996	<	threadAssertTrue(q.isEmpty());
997	<	}}).start();
993	>	Thread t = newStartedThread(new CheckedRunnable() {
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());
1001	<	assertTrue(q.isEmpty());
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	>	awaitTermination(t, MEDIUM_DELAY_MS);
1006		}
1007
1008		/**
#	Line 937 | Line 1012 | public class LinkedTransferQueueTest ext
1012		try {
1013		final LinkedTransferQueue q = new LinkedTransferQueue();
1014		q.tryTransfer(null);
1015	<	this.shouldThrow();
1016	<	} catch (NullPointerException ex) {
942	<	}
1015	>	shouldThrow();
1016	>	} catch (NullPointerException success) {}
1017		}
1018
1019		/**
1020		* tryTransfer returns false and does not enqueue if there are no
1021		* consumers waiting to poll or take.
1022		*/
1023	<	public void testTryTransfer2() {
1023	>	public void testTryTransfer2() throws InterruptedException {
1024		final LinkedTransferQueue q = new LinkedTransferQueue();
1025		assertFalse(q.tryTransfer(new Object()));
1026		assertFalse(q.hasWaitingConsumer());
1027	<	assertTrue(q.isEmpty());
954	<	assertEquals(0, q.size());
1027	>	checkEmpty(q);
1028		}
1029
1030		/**
#	Line 961 | Line 1034 | public class LinkedTransferQueueTest ext
1034		public void testTryTransfer3() throws InterruptedException {
1035		final Object hotPotato = new Object();
1036		final LinkedTransferQueue q = new LinkedTransferQueue();
1037	<	new Thread(new CheckedRunnable() {
1038	<	void realRun() {
1037	>
1038	>	Thread t = newStartedThread(new CheckedRunnable() {
1039	>	public void realRun() {
1040		while (! q.hasWaitingConsumer())
1041		Thread.yield();
1042	<	threadAssertTrue(q.hasWaitingConsumer());
1043	<	threadAssertTrue(q.isEmpty());
1044	<	threadAssertTrue(q.size() == 0);
1045	<	threadAssertTrue(q.tryTransfer(hotPotato));
1046	<	}}).start();
1047	<	assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) == hotPotato);
1048	<	assertTrue(q.isEmpty());
1042	>	assertTrue(q.hasWaitingConsumer());
1043	>	checkEmpty(q);
1044	>	assertTrue(q.tryTransfer(hotPotato));
1045	>	}});
1046	>
1047	>	assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
1048	>	checkEmpty(q);
1049	>	awaitTermination(t, MEDIUM_DELAY_MS);
1050		}
1051
1052		/**
#	Line 981 | Line 1056 | public class LinkedTransferQueueTest ext
1056		public void testTryTransfer4() throws InterruptedException {
1057		final Object hotPotato = new Object();
1058		final LinkedTransferQueue q = new LinkedTransferQueue();
1059	<	new Thread(new CheckedRunnable() {
1060	<	void realRun() {
1059	>
1060	>	Thread t = newStartedThread(new CheckedRunnable() {
1061	>	public void realRun() {
1062		while (! q.hasWaitingConsumer())
1063		Thread.yield();
1064	<	threadAssertTrue(q.hasWaitingConsumer());
1065	<	threadAssertTrue(q.isEmpty());
1066	<	threadAssertTrue(q.size() == 0);
1067	<	threadAssertTrue(q.tryTransfer(hotPotato));
1068	<	}}).start();
1069	<	assertTrue(q.take() == hotPotato);
1070	<	assertTrue(q.isEmpty());
1064	>	assertTrue(q.hasWaitingConsumer());
1065	>	checkEmpty(q);
1066	>	assertTrue(q.tryTransfer(hotPotato));
1067	>	}});
1068	>
1069	>	assertSame(q.take(), hotPotato);
1070	>	checkEmpty(q);
1071	>	awaitTermination(t, MEDIUM_DELAY_MS);
1072		}
1073
1074		/**
1075	<	* tryTransfer waits the amount given if interrupted, and
1076	<	* throws interrupted exception
1075	>	* tryTransfer waits the amount given, and throws
1076	>	* InterruptedException when interrupted.
1077		*/
1078		public void testTryTransfer5() throws InterruptedException {
1079		final LinkedTransferQueue q = new LinkedTransferQueue();
1080	<	Thread toInterrupt = new Thread(new CheckedInterruptedRunnable() {
1081	<	void realRun() throws InterruptedException {
1082	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
1080	>	final CountDownLatch threadStarted = new CountDownLatch(1);
1081	>	assertTrue(q.isEmpty());
1082	>
1083	>	Thread t = newStartedThread(new CheckedRunnable() {
1084	>	public void realRun() throws InterruptedException {
1085	>	long t0 = System.nanoTime();
1086	>	threadStarted.countDown();
1087	>	try {
1088	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
1089	>	shouldThrow();
1090	>	} catch (InterruptedException success) {}
1091	>	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
1092	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
1093		}});
1094	<	toInterrupt.start();
1095	<	Thread.sleep(SMALL_DELAY_MS);
1096	<	toInterrupt.interrupt();
1094	>
1095	>	threadStarted.await();
1096	>	while (q.isEmpty())
1097	>	Thread.yield();
1098	>	Thread.sleep(SHORT_DELAY_MS);
1099	>	t.interrupt();
1100	>	awaitTermination(t, MEDIUM_DELAY_MS);
1101	>	checkEmpty(q);
1102		}
1103
1104		/**
1105	<	* tryTransfer gives up after the timeout and return false
1105	>	* tryTransfer gives up after the timeout and returns false
1106		*/
1107		public void testTryTransfer6() throws InterruptedException {
1108		final LinkedTransferQueue q = new LinkedTransferQueue();
1109	<	new Thread(new CheckedRunnable() {
1110	<	void realRun() throws InterruptedException {
1111	<	threadAssertFalse
1112	<	(q.tryTransfer(new Object(),
1113	<	SHORT_DELAY_MS, MILLISECONDS));
1114	<	}}).start();
1115	<	Thread.sleep(LONG_DELAY_MS);
1116	<	assertTrue(q.isEmpty());
1109	>
1110	>	Thread t = newStartedThread(new CheckedRunnable() {
1111	>	public void realRun() throws InterruptedException {
1112	>	long t0 = System.nanoTime();
1113	>	assertFalse(q.tryTransfer(new Object(),
1114	>	SHORT_DELAY_MS, MILLISECONDS));
1115	>	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
1116	>	checkEmpty(q);
1117	>	}});
1118	>
1119	>	awaitTermination(t, MEDIUM_DELAY_MS);
1120	>	checkEmpty(q);
1121		}
1122
1123		/**
#	Line 1031 | Line 1127 | public class LinkedTransferQueueTest ext
1127		public void testTryTransfer7() throws InterruptedException {
1128		final LinkedTransferQueue q = new LinkedTransferQueue();
1129		assertTrue(q.offer(four));
1130	<	new Thread(new CheckedRunnable() {
1131	<	void realRun() throws InterruptedException {
1132	<	threadAssertTrue(q.tryTransfer(five,
1133	<	LONG_DELAY_MS, MILLISECONDS));
1134	<	threadAssertTrue(q.isEmpty());
1135	<	}}).start();
1136	<	Thread.sleep(SHORT_DELAY_MS);
1130	>
1131	>	Thread t = newStartedThread(new CheckedRunnable() {
1132	>	public void realRun() throws InterruptedException {
1133	>	assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
1134	>	checkEmpty(q);
1135	>	}});
1136	>
1137	>	while (q.size() != 2)
1138	>	Thread.yield();
1139		assertEquals(2, q.size());
1140	<	assertEquals(four, q.poll());
1141	<	assertEquals(five, q.poll());
1142	<	assertTrue(q.isEmpty());
1140	>	assertSame(four, q.poll());
1141	>	assertSame(five, q.poll());
1142	>	checkEmpty(q);
1143	>	awaitTermination(t, MEDIUM_DELAY_MS);
1144		}
1145
1146		/**
1147	<	* tryTransfer attempts to enqueue into the q and fails returning
1148	<	* false not enqueueing and the successive poll is null
1147	>	* tryTransfer attempts to enqueue into the queue and fails
1148	>	* returning false not enqueueing and the successive poll is null
1149		*/
1150		public void testTryTransfer8() throws InterruptedException {
1151		final LinkedTransferQueue q = new LinkedTransferQueue();
1152		assertTrue(q.offer(four));
1153		assertEquals(1, q.size());
1154	+	long t0 = System.nanoTime();
1155		assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1156	+	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
1157		assertEquals(1, q.size());
1158	<	assertEquals(four, q.poll());
1058	<	threadAssertTrue(q.isEmpty());
1158	>	assertSame(four, q.poll());
1159		assertNull(q.poll());
1160	+	checkEmpty(q);
1161		}
1162
1163		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1164		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1165	<	assertTrue(q.isEmpty());
1165	>	checkEmpty(q);
1166		for (int i = 0; i < n; i++) {
1167		assertEquals(i, q.size());
1168		assertTrue(q.offer(i));
#	Line 1070 | Line 1171 | public class LinkedTransferQueueTest ext
1171		assertFalse(q.isEmpty());
1172		return q;
1173		}
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	–	}
1174		}

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