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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.27 by jsr166, Thu Oct 28 17:22:13 2010 UTC vs.
Revision 1.59 by jsr166, Sat Apr 25 04:55:31 2015 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include John Vint
6		*/
7
8	<	import java.io.BufferedInputStream;
9	<	import java.io.BufferedOutputStream;
10	<	import java.io.ByteArrayInputStream;
11	<	import java.io.ByteArrayOutputStream;
12	<	import java.io.ObjectInputStream;
13	<	import java.io.ObjectOutputStream;
8	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
9	>
10		import java.util.ArrayList;
11		import java.util.Arrays;
12	+	import java.util.Collection;
13		import java.util.Iterator;
14		import java.util.List;
15		import java.util.NoSuchElementException;
16	<	import java.util.concurrent.*;
17	<	import static java.util.concurrent.TimeUnit.MILLISECONDS;
18	<	import static java.util.concurrent.TimeUnit.NANOSECONDS;
16	>	import java.util.Queue;
17	>	import java.util.concurrent.BlockingQueue;
18	>	import java.util.concurrent.CountDownLatch;
19	>	import java.util.concurrent.Executors;
20	>	import java.util.concurrent.ExecutorService;
21	>	import java.util.concurrent.LinkedTransferQueue;
22	>
23		import junit.framework.Test;
23	–	import junit.framework.TestSuite;
24
25		@SuppressWarnings({"unchecked", "rawtypes"})
26		public class LinkedTransferQueueTest extends JSR166TestCase {
#	Line 32 | Line 32 | public class LinkedTransferQueueTest ext
32		}
33
34		public static void main(String[] args) {
35	<	junit.textui.TestRunner.run(suite());
35	>	main(suite(), args);
36		}
37
38		public static Test suite() {
#	Line 40 | Line 40 | public class LinkedTransferQueueTest ext
40		new Generic().testSuite());
41		}
42
43	–	void checkEmpty(LinkedTransferQueue q) throws InterruptedException {
44	–	assertTrue(q.isEmpty());
45	–	assertEquals(0, q.size());
46	–	assertNull(q.peek());
47	–	assertNull(q.poll());
48	–	assertNull(q.poll(0, MILLISECONDS));
49	–	assertEquals(q.toString(), "[]");
50	–	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
51	–	assertFalse(q.iterator().hasNext());
52	–	try {
53	–	q.element();
54	–	shouldThrow();
55	–	} catch (NoSuchElementException success) {}
56	–	try {
57	–	q.iterator().next();
58	–	shouldThrow();
59	–	} catch (NoSuchElementException success) {}
60	–	try {
61	–	q.remove();
62	–	shouldThrow();
63	–	} catch (NoSuchElementException success) {}
64	–	}
65	–
43		/**
44		* Constructor builds new queue with size being zero and empty
45		* being true
#	Line 88 | Line 65 | public class LinkedTransferQueueTest ext
65		* NullPointerException
66		*/
67		public void testConstructor3() {
68	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
69		try {
70	<	Integer[] ints = new Integer[SIZE];
93	<	new LinkedTransferQueue(Arrays.asList(ints));
70	>	new LinkedTransferQueue(elements);
71		shouldThrow();
72		} catch (NullPointerException success) {}
73		}
#	Line 100 | Line 77 | public class LinkedTransferQueueTest ext
77		* throws NullPointerException
78		*/
79		public void testConstructor4() {
80	+	Integer[] ints = new Integer[SIZE];
81	+	for (int i = 0; i < SIZE-1; ++i)
82	+	ints[i] = i;
83	+	Collection<Integer> elements = Arrays.asList(ints);
84		try {
85	<	Integer[] ints = new Integer[SIZE];
105	<	for (int i = 0; i < SIZE - 1; ++i) {
106	<	ints[i] = i;
107	<	}
108	<	new LinkedTransferQueue(Arrays.asList(ints));
85	>	new LinkedTransferQueue(elements);
86		shouldThrow();
87		} catch (NullPointerException success) {}
88		}
#	Line 138 | Line 115 | public class LinkedTransferQueueTest ext
115		* remainingCapacity() always returns Integer.MAX_VALUE
116		*/
117		public void testRemainingCapacity() {
118	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
118	>	BlockingQueue q = populatedQueue(SIZE);
119		for (int i = 0; i < SIZE; ++i) {
120		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
121		assertEquals(SIZE - i, q.size());
122	<	q.remove();
122	>	assertEquals(i, q.remove());
123		}
124		for (int i = 0; i < SIZE; ++i) {
125		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
126		assertEquals(i, q.size());
127	<	q.add(i);
127	>	assertTrue(q.add(i));
128		}
129		}
130
131		/**
155	–	* offer(null) throws NullPointerException
156	–	*/
157	–	public void testOfferNull() {
158	–	try {
159	–	LinkedTransferQueue q = new LinkedTransferQueue();
160	–	q.offer(null);
161	–	shouldThrow();
162	–	} catch (NullPointerException success) {}
163	–	}
164	–
165	–	/**
166	–	* add(null) throws NullPointerException
167	–	*/
168	–	public void testAddNull() {
169	–	try {
170	–	LinkedTransferQueue q = new LinkedTransferQueue();
171	–	q.add(null);
172	–	shouldThrow();
173	–	} catch (NullPointerException success) {}
174	–	}
175	–
176	–	/**
177	–	* addAll(null) throws NullPointerException
178	–	*/
179	–	public void testAddAll1() {
180	–	try {
181	–	LinkedTransferQueue q = new LinkedTransferQueue();
182	–	q.addAll(null);
183	–	shouldThrow();
184	–	} catch (NullPointerException success) {}
185	–	}
186	–
187	–	/**
132		* addAll(this) throws IllegalArgumentException
133		*/
134		public void testAddAllSelf() {
#	Line 196 | Line 140 | public class LinkedTransferQueueTest ext
140		}
141
142		/**
199	–	* addAll of a collection with null elements throws NullPointerException
200	–	*/
201	–	public void testAddAll2() {
202	–	try {
203	–	LinkedTransferQueue q = new LinkedTransferQueue();
204	–	Integer[] ints = new Integer[SIZE];
205	–	q.addAll(Arrays.asList(ints));
206	–	shouldThrow();
207	–	} catch (NullPointerException success) {}
208	–	}
209	–
210	–	/**
143		* addAll of a collection with any null elements throws
144		* NullPointerException after possibly adding some elements
145		*/
#	Line 241 | Line 173 | public class LinkedTransferQueueTest ext
173		}
174
175		/**
244	–	* put(null) throws NullPointerException
245	–	*/
246	–	public void testPutNull() throws InterruptedException {
247	–	try {
248	–	LinkedTransferQueue q = new LinkedTransferQueue();
249	–	q.put(null);
250	–	shouldThrow();
251	–	} catch (NullPointerException success) {}
252	–	}
253	–
254	–	/**
176		* all elements successfully put are contained
177		*/
178		public void testPut() {
179		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
180		for (int i = 0; i < SIZE; ++i) {
181	<	assertEquals(q.size(), i);
181	>	assertEquals(i, q.size());
182		q.put(i);
183		assertTrue(q.contains(i));
184		}
#	Line 274 | Line 195 | public class LinkedTransferQueueTest ext
195		}
196
197		/**
198	<	* take blocks interruptibly when empty
278	<	*/
279	<	public void testTakeFromEmpty() throws InterruptedException {
280	<	final LinkedTransferQueue q = new LinkedTransferQueue();
281	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
282	<	public void realRun() throws InterruptedException {
283	<	q.take();
284	<	}});
285	<	Thread.sleep(SHORT_DELAY_MS);
286	<	t.interrupt();
287	<	t.join();
288	<	}
289	<
290	<	/**
291	<	* Take removes existing elements until empty, then blocks interruptibly
198	>	* take removes existing elements until empty, then blocks interruptibly
199		*/
200		public void testBlockingTake() throws InterruptedException {
201	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
202	<	Thread t = new Thread(new CheckedRunnable() {
201	>	final BlockingQueue q = populatedQueue(SIZE);
202	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
203	>	Thread t = newStartedThread(new CheckedRunnable() {
204		public void realRun() throws InterruptedException {
205		for (int i = 0; i < SIZE; ++i) {
206	<	assertEquals(i, (int) q.take());
206	>	assertEquals(i, q.take());
207		}
208	+
209	+	Thread.currentThread().interrupt();
210	+	try {
211	+	q.take();
212	+	shouldThrow();
213	+	} catch (InterruptedException success) {}
214	+	assertFalse(Thread.interrupted());
215	+
216	+	pleaseInterrupt.countDown();
217		try {
218		q.take();
219		shouldThrow();
220		} catch (InterruptedException success) {}
221	+	assertFalse(Thread.interrupted());
222		}});
223
224	<	t.start();
225	<	Thread.sleep(SHORT_DELAY_MS);
224	>	await(pleaseInterrupt);
225	>	assertThreadStaysAlive(t);
226		t.interrupt();
227	<	t.join();
310	<	checkEmpty(q);
227	>	awaitTermination(t);
228		}
229
230		/**
#	Line 323 | Line 240 | public class LinkedTransferQueueTest ext
240		}
241
242		/**
243	<	* timed pool with zero timeout succeeds when non-empty, else times out
243	>	* timed poll with zero timeout succeeds when non-empty, else times out
244		*/
245		public void testTimedPoll0() throws InterruptedException {
246		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
#	Line 335 | Line 252 | public class LinkedTransferQueueTest ext
252		}
253
254		/**
255	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
255	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
256		*/
257		public void testTimedPoll() throws InterruptedException {
258		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
259		for (int i = 0; i < SIZE; ++i) {
260	<	long t0 = System.nanoTime();
260	>	long startTime = System.nanoTime();
261		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
262	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
346	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
262	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
263		}
264	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
264	>	long startTime = System.nanoTime();
265	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
266	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
267		checkEmpty(q);
268		}
269
#	Line 354 | Line 272 | public class LinkedTransferQueueTest ext
272		* returning timeout status
273		*/
274		public void testInterruptedTimedPoll() throws InterruptedException {
275	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
275	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
276	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
277		Thread t = newStartedThread(new CheckedRunnable() {
278		public void realRun() throws InterruptedException {
279		for (int i = 0; i < SIZE; ++i) {
280		long t0 = System.nanoTime();
281		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
282	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
364	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
282	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
283		}
284	+	long t0 = System.nanoTime();
285	+	aboutToWait.countDown();
286		try {
287	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
287	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
288		shouldThrow();
289	<	} catch (InterruptedException success) {}
289	>	} catch (InterruptedException success) {
290	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
291	>	}
292		}});
293
294	<	Thread.sleep(SMALL_DELAY_MS);
294	>	aboutToWait.await();
295	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
296		t.interrupt();
297	<	t.join();
297	>	awaitTermination(t, MEDIUM_DELAY_MS);
298	>	checkEmpty(q);
299	>	}
300	>
301	>	/**
302	>	* timed poll after thread interrupted throws InterruptedException
303	>	* instead of returning timeout status
304	>	*/
305	>	public void testTimedPollAfterInterrupt() throws InterruptedException {
306	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
307	>	Thread t = newStartedThread(new CheckedRunnable() {
308	>	public void realRun() throws InterruptedException {
309	>	Thread.currentThread().interrupt();
310	>	for (int i = 0; i < SIZE; ++i) {
311	>	long t0 = System.nanoTime();
312	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
313	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
314	>	}
315	>	try {
316	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
317	>	shouldThrow();
318	>	} catch (InterruptedException success) {}
319	>	}});
320	>
321	>	awaitTermination(t, MEDIUM_DELAY_MS);
322		checkEmpty(q);
323		}
324
#	Line 422 | Line 369 | public class LinkedTransferQueueTest ext
369		}
370
371		/**
425	–	* remove(x) removes x and returns true if present
426	–	*/
427	–	public void testRemoveElement() throws InterruptedException {
428	–	LinkedTransferQueue q = populatedQueue(SIZE);
429	–	for (int i = 1; i < SIZE; i += 2) {
430	–	assertTrue(q.remove(i));
431	–	}
432	–	for (int i = 0; i < SIZE; i += 2) {
433	–	assertTrue(q.remove(i));
434	–	assertFalse(q.remove(i + 1));
435	–	}
436	–	checkEmpty(q);
437	–	}
438	–
439	–	/**
372		* An add following remove(x) succeeds
373		*/
374		public void testRemoveElementAndAdd() throws InterruptedException {
#	Line 528 | Line 460 | public class LinkedTransferQueueTest ext
460		}
461
462		/**
463	<	* toArray() contains all elements
463	>	* toArray() contains all elements in FIFO order
464		*/
465	<	public void testToArray() throws InterruptedException {
465	>	public void testToArray() {
466		LinkedTransferQueue q = populatedQueue(SIZE);
467		Object[] o = q.toArray();
468		for (int i = 0; i < o.length; i++) {
469	<	assertEquals(o[i], q.take());
469	>	assertSame(o[i], q.poll());
470		}
471		}
472
473		/**
474	<	* toArray(a) contains all elements
474	>	* toArray(a) contains all elements in FIFO order
475		*/
476	<	public void testToArray2() throws InterruptedException {
476	>	public void testToArray2() {
477		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
478		Integer[] ints = new Integer[SIZE];
479	<	ints = q.toArray(ints);
479	>	Integer[] array = q.toArray(ints);
480	>	assertSame(ints, array);
481		for (int i = 0; i < ints.length; i++) {
482	<	assertEquals(ints[i], q.take());
482	>	assertSame(ints[i], q.poll());
483		}
484		}
485
486		/**
487	<	* toArray(null) throws NullPointerException
555	<	*/
556	<	public void testToArray_BadArg() {
557	<	LinkedTransferQueue q = populatedQueue(SIZE);
558	<	try {
559	<	Object o[] = q.toArray(null);
560	<	shouldThrow();
561	<	} catch (NullPointerException success) {}
562	<	}
563	<
564	<	/**
565	<	* toArray(incompatible array type) throws CCE
487	>	* toArray(incompatible array type) throws ArrayStoreException
488		*/
489		public void testToArray1_BadArg() {
490		LinkedTransferQueue q = populatedQueue(SIZE);
491		try {
492	<	Object o[] = q.toArray(new String[10]);
492	>	q.toArray(new String[10]);
493		shouldThrow();
494		} catch (ArrayStoreException success) {}
495		}
#	Line 578 | Line 500 | public class LinkedTransferQueueTest ext
500		public void testIterator() throws InterruptedException {
501		LinkedTransferQueue q = populatedQueue(SIZE);
502		Iterator it = q.iterator();
503	<	int i = 0;
504	<	while (it.hasNext()) {
505	<	assertEquals(it.next(), i++);
584	<	}
503	>	int i;
504	>	for (i = 0; it.hasNext(); i++)
505	>	assertTrue(q.contains(it.next()));
506		assertEquals(i, SIZE);
507	+	assertIteratorExhausted(it);
508	+
509	+	it = q.iterator();
510	+	for (i = 0; it.hasNext(); i++)
511	+	assertEquals(it.next(), q.take());
512	+	assertEquals(i, SIZE);
513	+	assertIteratorExhausted(it);
514	+	}
515	+
516	+	/**
517	+	* iterator of empty collection has no elements
518	+	*/
519	+	public void testEmptyIterator() {
520	+	assertIteratorExhausted(new LinkedTransferQueue().iterator());
521		}
522
523		/**
#	Line 644 | Line 579 | public class LinkedTransferQueueTest ext
579		LinkedTransferQueue q = populatedQueue(SIZE);
580		String s = q.toString();
581		for (int i = 0; i < SIZE; ++i) {
582	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
582	>	assertTrue(s.contains(String.valueOf(i)));
583		}
584		}
585
#	Line 653 | Line 588 | public class LinkedTransferQueueTest ext
588		*/
589		public void testOfferInExecutor() {
590		final LinkedTransferQueue q = new LinkedTransferQueue();
591	<	q.add(one);
657	<	q.add(two);
591	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
592		ExecutorService executor = Executors.newFixedThreadPool(2);
593
594		executor.execute(new CheckedRunnable() {
595	<	public void realRun() {
596	<	assertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS));
595	>	public void realRun() throws InterruptedException {
596	>	threadsStarted.await();
597	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
598		}});
599
600		executor.execute(new CheckedRunnable() {
601		public void realRun() throws InterruptedException {
602	<	Thread.sleep(SMALL_DELAY_MS);
602	>	threadsStarted.await();
603		assertSame(one, q.take());
604	+	checkEmpty(q);
605		}});
606
607		joinPool(executor);
#	Line 676 | Line 612 | public class LinkedTransferQueueTest ext
612		*/
613		public void testPollInExecutor() {
614		final LinkedTransferQueue q = new LinkedTransferQueue();
615	+	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
616		ExecutorService executor = Executors.newFixedThreadPool(2);
617
618		executor.execute(new CheckedRunnable() {
619		public void realRun() throws InterruptedException {
620		assertNull(q.poll());
621	<	assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
622	<	assertTrue(q.isEmpty());
621	>	threadsStarted.await();
622	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
623	>	checkEmpty(q);
624		}});
625
626		executor.execute(new CheckedRunnable() {
627		public void realRun() throws InterruptedException {
628	<	Thread.sleep(SMALL_DELAY_MS);
628	>	threadsStarted.await();
629		q.put(one);
630		}});
631
#	Line 698 | Line 636 | public class LinkedTransferQueueTest ext
636		* A deserialized serialized queue has same elements in same order
637		*/
638		public void testSerialization() throws Exception {
639	<	LinkedTransferQueue q = populatedQueue(SIZE);
640	<
703	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
704	<	ObjectOutputStream out
705	<	= new ObjectOutputStream(new BufferedOutputStream(bout));
706	<	out.writeObject(q);
707	<	out.close();
639	>	Queue x = populatedQueue(SIZE);
640	>	Queue y = serialClone(x);
641
642	<	ByteArrayInputStream bin
643	<	= new ByteArrayInputStream(bout.toByteArray());
644	<	ObjectInputStream in
645	<	= new ObjectInputStream(new BufferedInputStream(bin));
646	<	LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
647	<
648	<	assertEquals(q.size(), r.size());
716	<	while (!q.isEmpty()) {
717	<	assertEquals(q.remove(), r.remove());
642	>	assertNotSame(y, x);
643	>	assertEquals(x.size(), y.size());
644	>	assertEquals(x.toString(), y.toString());
645	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
646	>	while (!x.isEmpty()) {
647	>	assertFalse(y.isEmpty());
648	>	assertEquals(x.remove(), y.remove());
649		}
650	<	}
720	<
721	<	/**
722	<	* drainTo(null) throws NullPointerException
723	<	*/
724	<	public void testDrainToNull() {
725	<	LinkedTransferQueue q = populatedQueue(SIZE);
726	<	try {
727	<	q.drainTo(null);
728	<	shouldThrow();
729	<	} catch (NullPointerException success) {}
730	<	}
731	<
732	<	/**
733	<	* drainTo(this) throws IllegalArgumentException
734	<	*/
735	<	public void testDrainToSelf() {
736	<	LinkedTransferQueue q = populatedQueue(SIZE);
737	<	try {
738	<	q.drainTo(q);
739	<	shouldThrow();
740	<	} catch (IllegalArgumentException success) {}
650	>	assertTrue(y.isEmpty());
651		}
652
653		/**
#	Line 747 | Line 657 | public class LinkedTransferQueueTest ext
657		LinkedTransferQueue q = populatedQueue(SIZE);
658		ArrayList l = new ArrayList();
659		q.drainTo(l);
660	<	assertEquals(q.size(), 0);
661	<	assertEquals(l.size(), SIZE);
660	>	assertEquals(0, q.size());
661	>	assertEquals(SIZE, l.size());
662		for (int i = 0; i < SIZE; ++i) {
663	<	assertEquals(l.get(i), i);
663	>	assertEquals(i, l.get(i));
664		}
665		q.add(zero);
666		q.add(one);
#	Line 759 | Line 669 | public class LinkedTransferQueueTest ext
669		assertTrue(q.contains(one));
670		l.clear();
671		q.drainTo(l);
672	<	assertEquals(q.size(), 0);
673	<	assertEquals(l.size(), 2);
672	>	assertEquals(0, q.size());
673	>	assertEquals(2, l.size());
674		for (int i = 0; i < 2; ++i) {
675	<	assertEquals(l.get(i), i);
675	>	assertEquals(i, l.get(i));
676		}
677		}
678
#	Line 778 | Line 688 | public class LinkedTransferQueueTest ext
688		ArrayList l = new ArrayList();
689		q.drainTo(l);
690		assertTrue(l.size() >= SIZE);
691	<	for (int i = 0; i < SIZE; ++i) {
692	<	assertEquals(l.get(i), i);
693	<	}
784	<	t.join();
691	>	for (int i = 0; i < SIZE; ++i)
692	>	assertEquals(i, l.get(i));
693	>	awaitTermination(t, MEDIUM_DELAY_MS);
694		assertTrue(q.size() + l.size() >= SIZE);
695		}
696
697		/**
789	–	* drainTo(null, n) throws NullPointerException
790	–	*/
791	–	public void testDrainToNullN() {
792	–	LinkedTransferQueue q = populatedQueue(SIZE);
793	–	try {
794	–	q.drainTo(null, SIZE);
795	–	shouldThrow();
796	–	} catch (NullPointerException success) {}
797	–	}
798	–
799	–	/**
800	–	* drainTo(this, n) throws IllegalArgumentException
801	–	*/
802	–	public void testDrainToSelfN() {
803	–	LinkedTransferQueue q = populatedQueue(SIZE);
804	–	try {
805	–	q.drainTo(q, SIZE);
806	–	shouldThrow();
807	–	} catch (IllegalArgumentException success) {}
808	–	}
809	–
810	–	/**
698		* drainTo(c, n) empties first min(n, size) elements of queue into c
699		*/
700		public void testDrainToN() {
#	Line 819 | Line 706 | public class LinkedTransferQueueTest ext
706		ArrayList l = new ArrayList();
707		q.drainTo(l, i);
708		int k = (i < SIZE) ? i : SIZE;
709	<	assertEquals(l.size(), k);
710	<	assertEquals(q.size(), SIZE - k);
711	<	for (int j = 0; j < k; ++j) {
712	<	assertEquals(l.get(j), j);
713	<	}
827	<	while (q.poll() != null)
828	<	;
709	>	assertEquals(k, l.size());
710	>	assertEquals(SIZE - k, q.size());
711	>	for (int j = 0; j < k; ++j)
712	>	assertEquals(j, l.get(j));
713	>	do {} while (q.poll() != null);
714		}
715		}
716
#	Line 835 | Line 720 | public class LinkedTransferQueueTest ext
720		*/
721		public void testWaitingConsumer() throws InterruptedException {
722		final LinkedTransferQueue q = new LinkedTransferQueue();
723	<	assertEquals(q.getWaitingConsumerCount(), 0);
723	>	assertEquals(0, q.getWaitingConsumerCount());
724		assertFalse(q.hasWaitingConsumer());
725	+	final CountDownLatch threadStarted = new CountDownLatch(1);
726
727		Thread t = newStartedThread(new CheckedRunnable() {
728		public void realRun() throws InterruptedException {
729	<	Thread.sleep(SMALL_DELAY_MS);
730	<	assertTrue(q.hasWaitingConsumer());
731	<	assertEquals(q.getWaitingConsumerCount(), 1);
846	<	assertTrue(q.offer(one));
729	>	threadStarted.countDown();
730	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
731	>	assertEquals(0, q.getWaitingConsumerCount());
732		assertFalse(q.hasWaitingConsumer());
848	–	assertEquals(q.getWaitingConsumerCount(), 0);
733		}});
734
735	<	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
736	<	assertEquals(q.getWaitingConsumerCount(), 0);
735	>	threadStarted.await();
736	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
737	>	assertEquals(1, q.getWaitingConsumerCount());
738	>	assertTrue(q.hasWaitingConsumer());
739	>
740	>	assertTrue(q.offer(one));
741	>	assertEquals(0, q.getWaitingConsumerCount());
742		assertFalse(q.hasWaitingConsumer());
743	<	t.join();
743	>
744	>	awaitTermination(t, MEDIUM_DELAY_MS);
745		}
746
747		/**
#	Line 872 | Line 762 | public class LinkedTransferQueueTest ext
762		public void testTransfer2() throws InterruptedException {
763		final LinkedTransferQueue<Integer> q
764		= new LinkedTransferQueue<Integer>();
765	+	final CountDownLatch threadStarted = new CountDownLatch(1);
766
767		Thread t = newStartedThread(new CheckedRunnable() {
768		public void realRun() throws InterruptedException {
769	<	q.transfer(SIZE);
770	<	assertTrue(q.isEmpty());
769	>	threadStarted.countDown();
770	>	q.transfer(five);
771	>	checkEmpty(q);
772		}});
773
774	<	Thread.sleep(SHORT_DELAY_MS);
774	>	threadStarted.await();
775	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
776		assertEquals(1, q.size());
777	<	assertEquals(SIZE, (int) q.poll());
778	<	assertTrue(q.isEmpty());
779	<	t.join();
777	>	assertSame(five, q.poll());
778	>	checkEmpty(q);
779	>	awaitTermination(t, MEDIUM_DELAY_MS);
780		}
781
782		/**
#	Line 895 | Line 788 | public class LinkedTransferQueueTest ext
788
789		Thread first = newStartedThread(new CheckedRunnable() {
790		public void realRun() throws InterruptedException {
791	<	Integer i = SIZE + 1;
792	<	q.transfer(i);
900	<	assertTrue(!q.contains(i));
791	>	q.transfer(four);
792	>	assertTrue(!q.contains(four));
793		assertEquals(1, q.size());
794		}});
795
796		Thread interruptedThread = newStartedThread(
797		new CheckedInterruptedRunnable() {
798		public void realRun() throws InterruptedException {
799	<	while (q.size() == 0)
799	>	while (q.isEmpty())
800		Thread.yield();
801	<	q.transfer(SIZE);
801	>	q.transfer(five);
802		}});
803
804		while (q.size() < 2)
805		Thread.yield();
806		assertEquals(2, q.size());
807	<	assertEquals(SIZE + 1, (int) q.poll());
807	>	assertSame(four, q.poll());
808		first.join();
809		assertEquals(1, q.size());
810		interruptedThread.interrupt();
811		interruptedThread.join();
812	<	assertEquals(0, q.size());
921	<	assertTrue(q.isEmpty());
812	>	checkEmpty(q);
813		}
814
815		/**
#	Line 935 | Line 826 | public class LinkedTransferQueueTest ext
826		assertSame(three, q.poll());
827		}});
828
829	<	Thread.sleep(SHORT_DELAY_MS);
829	>	while (q.isEmpty())
830	>	Thread.yield();
831	>	assertFalse(q.isEmpty());
832	>	assertEquals(1, q.size());
833		assertTrue(q.offer(three));
834		assertSame(four, q.poll());
835	<	t.join();
835	>	awaitTermination(t, MEDIUM_DELAY_MS);
836		}
837
838		/**
#	Line 951 | Line 845 | public class LinkedTransferQueueTest ext
845
846		Thread t = newStartedThread(new CheckedRunnable() {
847		public void realRun() throws InterruptedException {
848	<	q.transfer(SIZE);
848	>	q.transfer(four);
849		checkEmpty(q);
850		}});
851
852	<	Thread.sleep(SHORT_DELAY_MS);
853	<	assertEquals(SIZE, (int) q.take());
852	>	while (q.isEmpty())
853	>	Thread.yield();
854	>	assertFalse(q.isEmpty());
855	>	assertEquals(1, q.size());
856	>	assertSame(four, q.take());
857		checkEmpty(q);
858	<	t.join();
858	>	awaitTermination(t, MEDIUM_DELAY_MS);
859		}
860
861		/**
#	Line 996 | Line 893 | public class LinkedTransferQueueTest ext
893		while (! q.hasWaitingConsumer())
894		Thread.yield();
895		assertTrue(q.hasWaitingConsumer());
896	<	assertTrue(q.isEmpty());
1000	<	assertEquals(q.size(), 0);
896	>	checkEmpty(q);
897		assertTrue(q.tryTransfer(hotPotato));
898		}});
899
900		assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
901		checkEmpty(q);
902	<	t.join();
902	>	awaitTermination(t, MEDIUM_DELAY_MS);
903		}
904
905		/**
#	Line 1019 | Line 915 | public class LinkedTransferQueueTest ext
915		while (! q.hasWaitingConsumer())
916		Thread.yield();
917		assertTrue(q.hasWaitingConsumer());
918	<	assertTrue(q.isEmpty());
1023	<	assertEquals(q.size(), 0);
918	>	checkEmpty(q);
919		assertTrue(q.tryTransfer(hotPotato));
920		}});
921
922		assertSame(q.take(), hotPotato);
923		checkEmpty(q);
924	<	t.join();
924	>	awaitTermination(t, MEDIUM_DELAY_MS);
925		}
926
927		/**
928	<	* tryTransfer waits the amount given if interrupted, and
1034	<	* throws interrupted exception
928	>	* tryTransfer blocks interruptibly if no takers
929		*/
930		public void testTryTransfer5() throws InterruptedException {
931		final LinkedTransferQueue q = new LinkedTransferQueue();
932	+	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
933	+	assertTrue(q.isEmpty());
934
935	<	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
935	>	Thread t = newStartedThread(new CheckedRunnable() {
936		public void realRun() throws InterruptedException {
937	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
937	>	Thread.currentThread().interrupt();
938	>	try {
939	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
940	>	shouldThrow();
941	>	} catch (InterruptedException success) {}
942	>	assertFalse(Thread.interrupted());
943	>
944	>	pleaseInterrupt.countDown();
945	>	try {
946	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
947	>	shouldThrow();
948	>	} catch (InterruptedException success) {}
949	>	assertFalse(Thread.interrupted());
950		}});
951
952	<	Thread.sleep(SMALL_DELAY_MS);
953	<	toInterrupt.interrupt();
954	<	toInterrupt.join();
952	>	await(pleaseInterrupt);
953	>	assertThreadStaysAlive(t);
954	>	t.interrupt();
955	>	awaitTermination(t);
956	>	checkEmpty(q);
957		}
958
959		/**
960	<	* tryTransfer gives up after the timeout and return false
960	>	* tryTransfer gives up after the timeout and returns false
961		*/
962		public void testTryTransfer6() throws InterruptedException {
963		final LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 1056 | Line 966 | public class LinkedTransferQueueTest ext
966		public void realRun() throws InterruptedException {
967		long t0 = System.nanoTime();
968		assertFalse(q.tryTransfer(new Object(),
969	<	SHORT_DELAY_MS, MILLISECONDS));
970	<	long elapsed = NANOSECONDS.toMillis(System.nanoTime() - t0);
971	<	assertTrue(elapsed >= SHORT_DELAY_MS);
969	>	timeoutMillis(), MILLISECONDS));
970	>	assertTrue(millisElapsedSince(t0) >= timeoutMillis());
971	>	checkEmpty(q);
972		}});
973
974	<	checkEmpty(q);
1065	<	awaitTermination(t, MEDIUM_DELAY_MS);
974	>	awaitTermination(t);
975		checkEmpty(q);
976		}
977
#	Line 1077 | Line 986 | public class LinkedTransferQueueTest ext
986		Thread t = newStartedThread(new CheckedRunnable() {
987		public void realRun() throws InterruptedException {
988		assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
989	<	assertTrue(q.isEmpty());
989	>	checkEmpty(q);
990		}});
991
992	<	Thread.sleep(SHORT_DELAY_MS);
992	>	while (q.size() != 2)
993	>	Thread.yield();
994		assertEquals(2, q.size());
995		assertSame(four, q.poll());
996		assertSame(five, q.poll());
997		checkEmpty(q);
998	<	t.join();
998	>	awaitTermination(t, MEDIUM_DELAY_MS);
999		}
1000
1001		/**
1002	<	* tryTransfer attempts to enqueue into the q and fails returning
1003	<	* false not enqueueing and the successive poll is null
1002	>	* tryTransfer attempts to enqueue into the queue and fails
1003	>	* returning false not enqueueing and the successive poll is null
1004		*/
1005		public void testTryTransfer8() throws InterruptedException {
1006		final LinkedTransferQueue q = new LinkedTransferQueue();
1007		assertTrue(q.offer(four));
1008		assertEquals(1, q.size());
1009	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1009	>	long t0 = System.nanoTime();
1010	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
1011	>	assertTrue(millisElapsedSince(t0) >= timeoutMillis());
1012		assertEquals(1, q.size());
1013		assertSame(four, q.poll());
1014		assertNull(q.poll());
#	Line 1105 | Line 1017 | public class LinkedTransferQueueTest ext
1017
1018		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1019		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1020	<	assertTrue(q.isEmpty());
1020	>	checkEmpty(q);
1021		for (int i = 0; i < n; i++) {
1022		assertEquals(i, q.size());
1023		assertTrue(q.offer(i));
#	Line 1114 | Line 1026 | public class LinkedTransferQueueTest ext
1026		assertFalse(q.isEmpty());
1027		return q;
1028		}
1029	+
1030	+	/**
1031	+	* remove(null), contains(null) always return false
1032	+	*/
1033	+	public void testNeverContainsNull() {
1034	+	Collection<?>[] qs = {
1035	+	new LinkedTransferQueue<Object>(),
1036	+	populatedQueue(2),
1037	+	};
1038	+
1039	+	for (Collection<?> q : qs) {
1040	+	assertFalse(q.contains(null));
1041	+	assertFalse(q.remove(null));
1042	+	}
1043	+	}
1044		}

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