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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.15 by jsr166, Sat Nov 21 17:38:05 2009 UTC vs.
Revision 1.54 by jsr166, Wed Dec 31 16:44:02 2014 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;
14	<	import java.util.ArrayList;
8	>	import junit.framework.*;
9		import java.util.Arrays;
10	+	import java.util.ArrayList;
11	+	import java.util.Collection;
12		import java.util.Iterator;
13		import java.util.List;
14		import java.util.NoSuchElementException;
15	<	import java.util.concurrent.*;
15	>	import java.util.Queue;
16	>	import java.util.concurrent.BlockingQueue;
17	>	import java.util.concurrent.CountDownLatch;
18	>	import java.util.concurrent.Executors;
19	>	import java.util.concurrent.ExecutorService;
20	>	import java.util.concurrent.LinkedTransferQueue;
21		import static java.util.concurrent.TimeUnit.MILLISECONDS;
21	–	import junit.framework.Test;
22	–	import junit.framework.TestSuite;
22
23		@SuppressWarnings({"unchecked", "rawtypes"})
24		public class LinkedTransferQueueTest extends JSR166TestCase {
25
26	+	public static class Generic extends BlockingQueueTest {
27	+	protected BlockingQueue emptyCollection() {
28	+	return new LinkedTransferQueue();
29	+	}
30	+	}
31	+
32		public static void main(String[] args) {
33		junit.textui.TestRunner.run(suite());
34		}
35
36		public static Test suite() {
37	<	return new TestSuite(LinkedTransferQueueTest.class);
38	<	}
34	<
35	<	void checkEmpty(LinkedTransferQueue q) throws InterruptedException {
36	<	assertTrue(q.isEmpty());
37	<	assertEquals(0, q.size());
38	<	assertNull(q.peek());
39	<	assertNull(q.poll());
40	<	assertNull(q.poll(0, MILLISECONDS));
41	<	assertEquals(q.toString(), "[]");
42	<	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
43	<	assertFalse(q.iterator().hasNext());
44	<	try {
45	<	q.element();
46	<	shouldThrow();
47	<	} catch (NoSuchElementException success) {
48	<	}
49	<	try {
50	<	q.iterator().next();
51	<	shouldThrow();
52	<	} catch (NoSuchElementException success) {
53	<	}
54	<	try {
55	<	q.remove();
56	<	shouldThrow();
57	<	} catch (NoSuchElementException success) {
58	<	}
37	>	return newTestSuite(LinkedTransferQueueTest.class,
38	>	new Generic().testSuite());
39		}
40
41		/**
#	Line 75 | Line 55 | public class LinkedTransferQueueTest ext
55		try {
56		new LinkedTransferQueue(null);
57		shouldThrow();
58	<	} catch (NullPointerException success) {
79	<	}
58	>	} catch (NullPointerException success) {}
59		}
60
61		/**
#	Line 84 | Line 63 | public class LinkedTransferQueueTest ext
63		* NullPointerException
64		*/
65		public void testConstructor3() {
66	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
67		try {
68	<	Integer[] ints = new Integer[SIZE];
89	<	new LinkedTransferQueue(Arrays.asList(ints));
68	>	new LinkedTransferQueue(elements);
69		shouldThrow();
70	<	} catch (NullPointerException success) {
92	<	}
70	>	} catch (NullPointerException success) {}
71		}
72
73		/**
#	Line 97 | Line 75 | public class LinkedTransferQueueTest ext
75		* throws NullPointerException
76		*/
77		public void testConstructor4() {
78	+	Integer[] ints = new Integer[SIZE];
79	+	for (int i = 0; i < SIZE-1; ++i)
80	+	ints[i] = i;
81	+	Collection<Integer> elements = Arrays.asList(ints);
82		try {
83	<	Integer[] ints = new Integer[SIZE];
102	<	for (int i = 0; i < SIZE - 1; ++i) {
103	<	ints[i] = i;
104	<	}
105	<	new LinkedTransferQueue(Arrays.asList(ints));
83	>	new LinkedTransferQueue(elements);
84		shouldThrow();
85	<	} catch (NullPointerException success) {
108	<	}
85	>	} catch (NullPointerException success) {}
86		}
87
88		/**
#	Line 150 | Line 127 | public class LinkedTransferQueueTest ext
127		}
128
129		/**
153	–	* offer(null) throws NullPointerException
154	–	*/
155	–	public void testOfferNull() {
156	–	try {
157	–	LinkedTransferQueue q = new LinkedTransferQueue();
158	–	q.offer(null);
159	–	shouldThrow();
160	–	} catch (NullPointerException success) {
161	–	}
162	–	}
163	–
164	–	/**
165	–	* add(null) throws NullPointerException
166	–	*/
167	–	public void testAddNull() {
168	–	try {
169	–	LinkedTransferQueue q = new LinkedTransferQueue();
170	–	q.add(null);
171	–	shouldThrow();
172	–	} catch (NullPointerException success) {
173	–	}
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	–
188	–	/**
130		* addAll(this) throws IllegalArgumentException
131		*/
132		public void testAddAllSelf() {
#	Line 193 | Line 134 | public class LinkedTransferQueueTest ext
134		LinkedTransferQueue q = populatedQueue(SIZE);
135		q.addAll(q);
136		shouldThrow();
137	<	} catch (IllegalArgumentException success) {
197	<	}
198	<	}
199	<
200	<	/**
201	<	* addAll of a collection with null elements throws NullPointerException
202	<	*/
203	<	public void testAddAll2() {
204	<	try {
205	<	LinkedTransferQueue q = new LinkedTransferQueue();
206	<	Integer[] ints = new Integer[SIZE];
207	<	q.addAll(Arrays.asList(ints));
208	<	shouldThrow();
209	<	} catch (NullPointerException success) {
210	<	}
137	>	} catch (IllegalArgumentException success) {}
138		}
139
140		/**
#	Line 223 | Line 150 | public class LinkedTransferQueueTest ext
150		}
151		q.addAll(Arrays.asList(ints));
152		shouldThrow();
153	<	} catch (NullPointerException success) {
227	<	}
153	>	} catch (NullPointerException success) {}
154		}
155
156		/**
#	Line 245 | Line 171 | public class LinkedTransferQueueTest ext
171		}
172
173		/**
248	–	* put(null) throws NullPointerException
249	–	*/
250	–	public void testPutNull() throws InterruptedException {
251	–	try {
252	–	LinkedTransferQueue q = new LinkedTransferQueue();
253	–	q.put(null);
254	–	shouldThrow();
255	–	} catch (NullPointerException success) {}
256	–	}
257	–
258	–	/**
174		* all elements successfully put are contained
175		*/
176		public void testPut() {
177		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
178		for (int i = 0; i < SIZE; ++i) {
179	<	assertEquals(q.size(), i);
179	>	assertEquals(i, q.size());
180		q.put(i);
181		assertTrue(q.contains(i));
182		}
#	Line 278 | Line 193 | public class LinkedTransferQueueTest ext
193		}
194
195		/**
196	<	* 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
196	>	* take removes existing elements until empty, then blocks interruptibly
197		*/
198		public void testBlockingTake() throws InterruptedException {
199	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
200	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
201	<	void realRun() throws InterruptedException {
199	>	final BlockingQueue q = populatedQueue(SIZE);
200	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
201	>	Thread t = newStartedThread(new CheckedRunnable() {
202	>	public void realRun() throws InterruptedException {
203		for (int i = 0; i < SIZE; ++i) {
204	<	threadAssertEquals(i, (int) q.take());
204	>	assertEquals(i, q.take());
205		}
206	<	q.take();
206	>
207	>	Thread.currentThread().interrupt();
208	>	try {
209	>	q.take();
210	>	shouldThrow();
211	>	} catch (InterruptedException success) {}
212	>	assertFalse(Thread.interrupted());
213	>
214	>	pleaseInterrupt.countDown();
215	>	try {
216	>	q.take();
217	>	shouldThrow();
218	>	} catch (InterruptedException success) {}
219	>	assertFalse(Thread.interrupted());
220		}});
221	<	Thread.sleep(SMALL_DELAY_MS);
221	>
222	>	await(pleaseInterrupt);
223	>	assertThreadStaysAlive(t);
224		t.interrupt();
225	<	t.join();
309	<	checkEmpty(q);
225	>	awaitTermination(t);
226		}
227
228		/**
#	Line 322 | Line 238 | public class LinkedTransferQueueTest ext
238		}
239
240		/**
241	<	* timed pool with zero timeout succeeds when non-empty, else times out
241	>	* timed poll with zero timeout succeeds when non-empty, else times out
242		*/
243		public void testTimedPoll0() throws InterruptedException {
244		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
#	Line 334 | Line 250 | public class LinkedTransferQueueTest ext
250		}
251
252		/**
253	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
253	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
254		*/
255		public void testTimedPoll() throws InterruptedException {
256		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
257		for (int i = 0; i < SIZE; ++i) {
258	<	long t0 = System.nanoTime();
258	>	long startTime = System.nanoTime();
259		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
260	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
345	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
260	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
261		}
262	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
262	>	long startTime = System.nanoTime();
263	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
264	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
265		checkEmpty(q);
266		}
267
#	Line 353 | Line 270 | public class LinkedTransferQueueTest ext
270		* returning timeout status
271		*/
272		public void testInterruptedTimedPoll() throws InterruptedException {
273	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
274	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
275	<	void realRun() throws InterruptedException {
273	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
274	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
275	>	Thread t = newStartedThread(new CheckedRunnable() {
276	>	public void realRun() throws InterruptedException {
277		for (int i = 0; i < SIZE; ++i) {
278		long t0 = System.nanoTime();
279	<	threadAssertEquals(i, (int) q.poll(LONG_DELAY_MS,
280	<	MILLISECONDS));
281	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
282	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
279	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
280	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
281	>	}
282	>	long t0 = System.nanoTime();
283	>	aboutToWait.countDown();
284	>	try {
285	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
286	>	shouldThrow();
287	>	} catch (InterruptedException success) {
288	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
289		}
366	–	q.poll(LONG_DELAY_MS, MILLISECONDS);
290		}});
291	<	Thread.sleep(SMALL_DELAY_MS);
291	>
292	>	aboutToWait.await();
293	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
294		t.interrupt();
295	<	t.join();
295	>	awaitTermination(t, MEDIUM_DELAY_MS);
296		checkEmpty(q);
297		}
298
299		/**
300	<	* timed poll before a delayed offer fails; after offer succeeds;
301	<	* on interruption throws
300	>	* timed poll after thread interrupted throws InterruptedException
301	>	* instead of returning timeout status
302		*/
303	<	public void testTimedPollWithOffer() throws InterruptedException {
304	<	final LinkedTransferQueue q = new LinkedTransferQueue();
305	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
306	<	void realRun() throws InterruptedException {
307	<	threadAssertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
308	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
309	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
303	>	public void testTimedPollAfterInterrupt() throws InterruptedException {
304	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
305	>	Thread t = newStartedThread(new CheckedRunnable() {
306	>	public void realRun() throws InterruptedException {
307	>	Thread.currentThread().interrupt();
308	>	for (int i = 0; i < SIZE; ++i) {
309	>	long t0 = System.nanoTime();
310	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
311	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
312	>	}
313	>	try {
314	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
315	>	shouldThrow();
316	>	} catch (InterruptedException success) {}
317		}});
318	<	Thread.sleep(SMALL_DELAY_MS);
319	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
320	<	t.interrupt();
389	<	t.join();
318	>
319	>	awaitTermination(t, MEDIUM_DELAY_MS);
320	>	checkEmpty(q);
321		}
322
323		/**
#	Line 416 | Line 347 | public class LinkedTransferQueueTest ext
347		try {
348		q.element();
349		shouldThrow();
350	<	} catch (NoSuchElementException success) {
420	<	}
350	>	} catch (NoSuchElementException success) {}
351		checkEmpty(q);
352		}
353
#	Line 432 | Line 362 | public class LinkedTransferQueueTest ext
362		try {
363		q.remove();
364		shouldThrow();
365	<	} catch (NoSuchElementException success) {
436	<	}
437	<	checkEmpty(q);
438	<	}
439	<
440	<	/**
441	<	* remove(x) removes x and returns true if present
442	<	*/
443	<	public void testRemoveElement() throws InterruptedException {
444	<	LinkedTransferQueue q = populatedQueue(SIZE);
445	<	for (int i = 1; i < SIZE; i += 2) {
446	<	assertTrue(q.remove(i));
447	<	}
448	<	for (int i = 0; i < SIZE; i += 2) {
449	<	assertTrue(q.remove(i));
450	<	assertFalse(q.remove(i + 1));
451	<	}
365	>	} catch (NoSuchElementException success) {}
366		checkEmpty(q);
367		}
368
#	Line 462 | Line 376 | public class LinkedTransferQueueTest ext
376		assertTrue(q.remove(one));
377		assertTrue(q.remove(two));
378		assertTrue(q.add(three));
379	<	assertTrue(q.take() == three);
379	>	assertSame(q.take(), three);
380		}
381
382		/**
#	Line 544 | Line 458 | public class LinkedTransferQueueTest ext
458		}
459
460		/**
461	<	* toArray() contains all elements
461	>	* toArray() contains all elements in FIFO order
462		*/
463	<	public void testToArray() throws InterruptedException {
463	>	public void testToArray() {
464		LinkedTransferQueue q = populatedQueue(SIZE);
465		Object[] o = q.toArray();
466		for (int i = 0; i < o.length; i++) {
467	<	assertEquals(o[i], q.take());
467	>	assertSame(o[i], q.poll());
468		}
469		}
470
471		/**
472	<	* toArray(a) contains all elements
472	>	* toArray(a) contains all elements in FIFO order
473		*/
474	<	public void testToArray2() throws InterruptedException {
474	>	public void testToArray2() {
475		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
476		Integer[] ints = new Integer[SIZE];
477	<	ints = q.toArray(ints);
477	>	Integer[] array = q.toArray(ints);
478	>	assertSame(ints, array);
479		for (int i = 0; i < ints.length; i++) {
480	<	assertEquals(ints[i], q.take());
480	>	assertSame(ints[i], q.poll());
481		}
482		}
483
484		/**
485	<	* toArray(null) throws NullPointerException
571	<	*/
572	<	public void testToArray_BadArg() {
573	<	try {
574	<	LinkedTransferQueue q = populatedQueue(SIZE);
575	<	Object o[] = q.toArray(null);
576	<	shouldThrow();
577	<	} catch (NullPointerException success) {
578	<	}
579	<	}
580	<
581	<	/**
582	<	* toArray(incompatible array type) throws CCE
485	>	* toArray(incompatible array type) throws ArrayStoreException
486		*/
487		public void testToArray1_BadArg() {
488	+	LinkedTransferQueue q = populatedQueue(SIZE);
489		try {
490	<	LinkedTransferQueue q = populatedQueue(SIZE);
587	<	Object o[] = q.toArray(new String[10]);
490	>	q.toArray(new String[10]);
491		shouldThrow();
492	<	} catch (ArrayStoreException success) {
590	<	}
492	>	} catch (ArrayStoreException success) {}
493		}
494
495		/**
#	Line 617 | Line 519 | public class LinkedTransferQueueTest ext
519		it.remove();
520
521		it = q.iterator();
522	<	assertEquals(it.next(), one);
523	<	assertEquals(it.next(), three);
522	>	assertSame(it.next(), one);
523	>	assertSame(it.next(), three);
524		assertFalse(it.hasNext());
525		}
526
#	Line 662 | Line 564 | public class LinkedTransferQueueTest ext
564		LinkedTransferQueue q = populatedQueue(SIZE);
565		String s = q.toString();
566		for (int i = 0; i < SIZE; ++i) {
567	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
567	>	assertTrue(s.contains(String.valueOf(i)));
568		}
569		}
570
#	Line 671 | Line 573 | public class LinkedTransferQueueTest ext
573		*/
574		public void testOfferInExecutor() {
575		final LinkedTransferQueue q = new LinkedTransferQueue();
576	<	q.add(one);
675	<	q.add(two);
576	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
577		ExecutorService executor = Executors.newFixedThreadPool(2);
578
579		executor.execute(new CheckedRunnable() {
580	<	void realRun() {
581	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS,
582	<	MILLISECONDS));
580	>	public void realRun() throws InterruptedException {
581	>	threadsStarted.await();
582	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
583		}});
584
585		executor.execute(new CheckedRunnable() {
586	<	void realRun() throws InterruptedException {
587	<	Thread.sleep(SMALL_DELAY_MS);
588	<	threadAssertEquals(one, q.take());
586	>	public void realRun() throws InterruptedException {
587	>	threadsStarted.await();
588	>	assertSame(one, q.take());
589	>	checkEmpty(q);
590		}});
591
592		joinPool(executor);
#	Line 695 | Line 597 | public class LinkedTransferQueueTest ext
597		*/
598		public void testPollInExecutor() {
599		final LinkedTransferQueue q = new LinkedTransferQueue();
600	+	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
601		ExecutorService executor = Executors.newFixedThreadPool(2);
602
603		executor.execute(new CheckedRunnable() {
604	<	void realRun() throws InterruptedException {
605	<	threadAssertNull(q.poll());
606	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS,
607	<	MILLISECONDS));
608	<	threadAssertTrue(q.isEmpty());
604	>	public void realRun() throws InterruptedException {
605	>	assertNull(q.poll());
606	>	threadsStarted.await();
607	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
608	>	checkEmpty(q);
609		}});
610
611		executor.execute(new CheckedRunnable() {
612	<	void realRun() throws InterruptedException {
613	<	Thread.sleep(SMALL_DELAY_MS);
612	>	public void realRun() throws InterruptedException {
613	>	threadsStarted.await();
614		q.put(one);
615		}});
616
#	Line 718 | Line 621 | public class LinkedTransferQueueTest ext
621		* A deserialized serialized queue has same elements in same order
622		*/
623		public void testSerialization() throws Exception {
624	<	LinkedTransferQueue q = populatedQueue(SIZE);
624	>	Queue x = populatedQueue(SIZE);
625	>	Queue y = serialClone(x);
626
627	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
628	<	ObjectOutputStream out
629	<	= new ObjectOutputStream(new BufferedOutputStream(bout));
630	<	out.writeObject(q);
631	<	out.close();
632	<
633	<	ByteArrayInputStream bin
730	<	= new ByteArrayInputStream(bout.toByteArray());
731	<	ObjectInputStream in
732	<	= new ObjectInputStream(new BufferedInputStream(bin));
733	<	LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
734	<
735	<	assertEquals(q.size(), r.size());
736	<	while (!q.isEmpty()) {
737	<	assertEquals(q.remove(), r.remove());
738	<	}
739	<	}
740	<
741	<	/**
742	<	* drainTo(null) throws NullPointerException
743	<	*/
744	<	public void testDrainToNull() {
745	<	LinkedTransferQueue q = populatedQueue(SIZE);
746	<	try {
747	<	q.drainTo(null);
748	<	shouldThrow();
749	<	} catch (NullPointerException success) {
750	<	}
751	<	}
752	<
753	<	/**
754	<	* drainTo(this) throws IllegalArgumentException
755	<	*/
756	<	public void testDrainToSelf() {
757	<	LinkedTransferQueue q = populatedQueue(SIZE);
758	<	try {
759	<	q.drainTo(q);
760	<	shouldThrow();
761	<	} catch (IllegalArgumentException success) {
627	>	assertNotSame(y, x);
628	>	assertEquals(x.size(), y.size());
629	>	assertEquals(x.toString(), y.toString());
630	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
631	>	while (!x.isEmpty()) {
632	>	assertFalse(y.isEmpty());
633	>	assertEquals(x.remove(), y.remove());
634		}
635	+	assertTrue(y.isEmpty());
636		}
637
638		/**
#	Line 769 | Line 642 | public class LinkedTransferQueueTest ext
642		LinkedTransferQueue q = populatedQueue(SIZE);
643		ArrayList l = new ArrayList();
644		q.drainTo(l);
645	<	assertEquals(q.size(), 0);
646	<	assertEquals(l.size(), SIZE);
645	>	assertEquals(0, q.size());
646	>	assertEquals(SIZE, l.size());
647		for (int i = 0; i < SIZE; ++i) {
648	<	assertEquals(l.get(i), i);
648	>	assertEquals(i, l.get(i));
649		}
650		q.add(zero);
651		q.add(one);
#	Line 781 | Line 654 | public class LinkedTransferQueueTest ext
654		assertTrue(q.contains(one));
655		l.clear();
656		q.drainTo(l);
657	<	assertEquals(q.size(), 0);
658	<	assertEquals(l.size(), 2);
657	>	assertEquals(0, q.size());
658	>	assertEquals(2, l.size());
659		for (int i = 0; i < 2; ++i) {
660	<	assertEquals(l.get(i), i);
660	>	assertEquals(i, l.get(i));
661		}
662		}
663
#	Line 794 | Line 667 | public class LinkedTransferQueueTest ext
667		public void testDrainToWithActivePut() throws InterruptedException {
668		final LinkedTransferQueue q = populatedQueue(SIZE);
669		Thread t = newStartedThread(new CheckedRunnable() {
670	<	void realRun() {
670	>	public void realRun() {
671		q.put(SIZE + 1);
672		}});
673		ArrayList l = new ArrayList();
674		q.drainTo(l);
675		assertTrue(l.size() >= SIZE);
676	<	for (int i = 0; i < SIZE; ++i) {
677	<	assertEquals(l.get(i), i);
678	<	}
806	<	t.join();
676	>	for (int i = 0; i < SIZE; ++i)
677	>	assertEquals(i, l.get(i));
678	>	awaitTermination(t, MEDIUM_DELAY_MS);
679		assertTrue(q.size() + l.size() >= SIZE);
680		}
681
682		/**
683	<	* drainTo(null, n) throws NullPointerException
812	<	*/
813	<	public void testDrainToNullN() {
814	<	LinkedTransferQueue q = populatedQueue(SIZE);
815	<	try {
816	<	q.drainTo(null, SIZE);
817	<	shouldThrow();
818	<	} catch (NullPointerException success) {
819	<	}
820	<	}
821	<
822	<	/**
823	<	* drainTo(this, n) throws IllegalArgumentException
824	<	*/
825	<	public void testDrainToSelfN() {
826	<	LinkedTransferQueue q = populatedQueue(SIZE);
827	<	try {
828	<	q.drainTo(q, SIZE);
829	<	shouldThrow();
830	<	} catch (IllegalArgumentException success) {
831	<	}
832	<	}
833	<
834	<	/**
835	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
683	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
684		*/
685		public void testDrainToN() {
686		LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 843 | Line 691 | public class LinkedTransferQueueTest ext
691		ArrayList l = new ArrayList();
692		q.drainTo(l, i);
693		int k = (i < SIZE) ? i : SIZE;
694	<	assertEquals(l.size(), k);
695	<	assertEquals(q.size(), SIZE - k);
696	<	for (int j = 0; j < k; ++j) {
697	<	assertEquals(l.get(j), j);
850	<	}
694	>	assertEquals(k, l.size());
695	>	assertEquals(SIZE - k, q.size());
696	>	for (int j = 0; j < k; ++j)
697	>	assertEquals(j, l.get(j));
698		while (q.poll() != null)
699		;
700		}
#	Line 859 | Line 706 | public class LinkedTransferQueueTest ext
706		*/
707		public void testWaitingConsumer() throws InterruptedException {
708		final LinkedTransferQueue q = new LinkedTransferQueue();
709	<	assertEquals(q.getWaitingConsumerCount(), 0);
709	>	assertEquals(0, q.getWaitingConsumerCount());
710		assertFalse(q.hasWaitingConsumer());
711	+	final CountDownLatch threadStarted = new CountDownLatch(1);
712
713		Thread t = newStartedThread(new CheckedRunnable() {
714	<	void realRun() throws InterruptedException {
715	<	Thread.sleep(SMALL_DELAY_MS);
716	<	threadAssertTrue(q.hasWaitingConsumer());
717	<	threadAssertEquals(q.getWaitingConsumerCount(), 1);
718	<	threadAssertTrue(q.offer(new Object()));
871	<	threadAssertFalse(q.hasWaitingConsumer());
872	<	threadAssertEquals(q.getWaitingConsumerCount(), 0);
714	>	public void realRun() throws InterruptedException {
715	>	threadStarted.countDown();
716	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
717	>	assertEquals(0, q.getWaitingConsumerCount());
718	>	assertFalse(q.hasWaitingConsumer());
719		}});
720
721	<	assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) != null);
722	<	assertEquals(q.getWaitingConsumerCount(), 0);
721	>	threadStarted.await();
722	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
723	>	assertEquals(1, q.getWaitingConsumerCount());
724	>	assertTrue(q.hasWaitingConsumer());
725	>
726	>	assertTrue(q.offer(one));
727	>	assertEquals(0, q.getWaitingConsumerCount());
728		assertFalse(q.hasWaitingConsumer());
729	<	t.join();
729	>
730	>	awaitTermination(t, MEDIUM_DELAY_MS);
731		}
732
733		/**
#	Line 896 | Line 748 | public class LinkedTransferQueueTest ext
748		public void testTransfer2() throws InterruptedException {
749		final LinkedTransferQueue<Integer> q
750		= new LinkedTransferQueue<Integer>();
751	+	final CountDownLatch threadStarted = new CountDownLatch(1);
752
753		Thread t = newStartedThread(new CheckedRunnable() {
754	<	void realRun() throws InterruptedException {
755	<	q.transfer(SIZE);
756	<	threadAssertTrue(q.isEmpty());
754	>	public void realRun() throws InterruptedException {
755	>	threadStarted.countDown();
756	>	q.transfer(five);
757	>	checkEmpty(q);
758		}});
759
760	<	Thread.sleep(SHORT_DELAY_MS);
760	>	threadStarted.await();
761	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
762		assertEquals(1, q.size());
763	<	assertEquals(SIZE, (int) q.poll());
764	<	assertTrue(q.isEmpty());
765	<	t.join();
763	>	assertSame(five, q.poll());
764	>	checkEmpty(q);
765	>	awaitTermination(t, MEDIUM_DELAY_MS);
766		}
767
768		/**
#	Line 918 | Line 773 | public class LinkedTransferQueueTest ext
773		= new LinkedTransferQueue<Integer>();
774
775		Thread first = newStartedThread(new CheckedRunnable() {
776	<	void realRun() throws InterruptedException {
777	<	Integer i = SIZE + 1;
778	<	q.transfer(i);
779	<	threadAssertTrue(!q.contains(i));
925	<	threadAssertEquals(1, q.size());
776	>	public void realRun() throws InterruptedException {
777	>	q.transfer(four);
778	>	assertTrue(!q.contains(four));
779	>	assertEquals(1, q.size());
780		}});
781
782		Thread interruptedThread = newStartedThread(
783		new CheckedInterruptedRunnable() {
784	<	void realRun() throws InterruptedException {
785	<	while (q.size() == 0)
784	>	public void realRun() throws InterruptedException {
785	>	while (q.isEmpty())
786		Thread.yield();
787	<	q.transfer(SIZE);
787	>	q.transfer(five);
788		}});
789
790		while (q.size() < 2)
791		Thread.yield();
792		assertEquals(2, q.size());
793	<	assertEquals(SIZE + 1, (int) q.poll());
793	>	assertSame(four, q.poll());
794		first.join();
795		assertEquals(1, q.size());
796		interruptedThread.interrupt();
797		interruptedThread.join();
798	<	assertEquals(0, q.size());
945	<	assertTrue(q.isEmpty());
798	>	checkEmpty(q);
799		}
800
801		/**
#	Line 953 | Line 806 | public class LinkedTransferQueueTest ext
806		final LinkedTransferQueue q = new LinkedTransferQueue();
807
808		Thread t = newStartedThread(new CheckedRunnable() {
809	<	void realRun() throws InterruptedException {
809	>	public void realRun() throws InterruptedException {
810		q.transfer(four);
811	<	threadAssertFalse(q.contains(four));
812	<	threadAssertEquals(three, q.poll());
811	>	assertFalse(q.contains(four));
812	>	assertSame(three, q.poll());
813		}});
814
815	<	Thread.sleep(SHORT_DELAY_MS);
815	>	while (q.isEmpty())
816	>	Thread.yield();
817	>	assertFalse(q.isEmpty());
818	>	assertEquals(1, q.size());
819		assertTrue(q.offer(three));
820	<	assertEquals(four, q.poll());
821	<	t.join();
820	>	assertSame(four, q.poll());
821	>	awaitTermination(t, MEDIUM_DELAY_MS);
822		}
823
824		/**
#	Line 974 | Line 830 | public class LinkedTransferQueueTest ext
830		= new LinkedTransferQueue<Integer>();
831
832		Thread t = newStartedThread(new CheckedRunnable() {
833	<	void realRun() throws InterruptedException {
834	<	q.transfer(SIZE);
833	>	public void realRun() throws InterruptedException {
834	>	q.transfer(four);
835		checkEmpty(q);
836		}});
837
838	<	Thread.sleep(SHORT_DELAY_MS);
839	<	assertEquals(SIZE, (int) q.take());
838	>	while (q.isEmpty())
839	>	Thread.yield();
840	>	assertFalse(q.isEmpty());
841	>	assertEquals(1, q.size());
842	>	assertSame(four, q.take());
843		checkEmpty(q);
844	<	t.join();
844	>	awaitTermination(t, MEDIUM_DELAY_MS);
845		}
846
847		/**
#	Line 1016 | Line 875 | public class LinkedTransferQueueTest ext
875		final LinkedTransferQueue q = new LinkedTransferQueue();
876
877		Thread t = newStartedThread(new CheckedRunnable() {
878	<	void realRun() {
878	>	public void realRun() {
879		while (! q.hasWaitingConsumer())
880		Thread.yield();
881	<	threadAssertTrue(q.hasWaitingConsumer());
882	<	threadAssertTrue(q.isEmpty());
883	<	threadAssertTrue(q.size() == 0);
1025	<	threadAssertTrue(q.tryTransfer(hotPotato));
881	>	assertTrue(q.hasWaitingConsumer());
882	>	checkEmpty(q);
883	>	assertTrue(q.tryTransfer(hotPotato));
884		}});
885
886	<	assertTrue(q.poll(MEDIUM_DELAY_MS, MILLISECONDS) == hotPotato);
886	>	assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
887		checkEmpty(q);
888	<	t.join();
888	>	awaitTermination(t, MEDIUM_DELAY_MS);
889		}
890
891		/**
#	Line 1039 | Line 897 | public class LinkedTransferQueueTest ext
897		final LinkedTransferQueue q = new LinkedTransferQueue();
898
899		Thread t = newStartedThread(new CheckedRunnable() {
900	<	void realRun() {
900	>	public void realRun() {
901		while (! q.hasWaitingConsumer())
902		Thread.yield();
903	<	threadAssertTrue(q.hasWaitingConsumer());
904	<	threadAssertTrue(q.isEmpty());
905	<	threadAssertTrue(q.size() == 0);
1048	<	threadAssertTrue(q.tryTransfer(hotPotato));
903	>	assertTrue(q.hasWaitingConsumer());
904	>	checkEmpty(q);
905	>	assertTrue(q.tryTransfer(hotPotato));
906		}});
907
908	<	assertTrue(q.take() == hotPotato);
908	>	assertSame(q.take(), hotPotato);
909		checkEmpty(q);
910	<	t.join();
910	>	awaitTermination(t, MEDIUM_DELAY_MS);
911		}
912
913		/**
914	<	* tryTransfer waits the amount given if interrupted, and
1058	<	* throws interrupted exception
914	>	* tryTransfer blocks interruptibly if no takers
915		*/
916		public void testTryTransfer5() throws InterruptedException {
917		final LinkedTransferQueue q = new LinkedTransferQueue();
918	+	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
919	+	assertTrue(q.isEmpty());
920
921	<	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
922	<	void realRun() throws InterruptedException {
923	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
921	>	Thread t = newStartedThread(new CheckedRunnable() {
922	>	public void realRun() throws InterruptedException {
923	>	Thread.currentThread().interrupt();
924	>	try {
925	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
926	>	shouldThrow();
927	>	} catch (InterruptedException success) {}
928	>	assertFalse(Thread.interrupted());
929	>
930	>	pleaseInterrupt.countDown();
931	>	try {
932	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
933	>	shouldThrow();
934	>	} catch (InterruptedException success) {}
935	>	assertFalse(Thread.interrupted());
936		}});
937
938	<	Thread.sleep(SMALL_DELAY_MS);
939	<	toInterrupt.interrupt();
940	<	toInterrupt.join();
938	>	await(pleaseInterrupt);
939	>	assertThreadStaysAlive(t);
940	>	t.interrupt();
941	>	awaitTermination(t);
942	>	checkEmpty(q);
943		}
944
945		/**
946	<	* tryTransfer gives up after the timeout and return false
946	>	* tryTransfer gives up after the timeout and returns false
947		*/
948		public void testTryTransfer6() throws InterruptedException {
949		final LinkedTransferQueue q = new LinkedTransferQueue();
950
951		Thread t = newStartedThread(new CheckedRunnable() {
952	<	void realRun() throws InterruptedException {
953	<	threadAssertFalse
954	<	(q.tryTransfer(new Object(),
955	<	SHORT_DELAY_MS, MILLISECONDS));
952	>	public void realRun() throws InterruptedException {
953	>	long t0 = System.nanoTime();
954	>	assertFalse(q.tryTransfer(new Object(),
955	>	timeoutMillis(), MILLISECONDS));
956	>	assertTrue(millisElapsedSince(t0) >= timeoutMillis());
957	>	checkEmpty(q);
958		}});
959
960	<	Thread.sleep(SMALL_DELAY_MS);
960	>	awaitTermination(t);
961		checkEmpty(q);
1088	–	t.join();
962		}
963
964		/**
#	Line 1097 | Line 970 | public class LinkedTransferQueueTest ext
970		assertTrue(q.offer(four));
971
972		Thread t = newStartedThread(new CheckedRunnable() {
973	<	void realRun() throws InterruptedException {
974	<	threadAssertTrue(q.tryTransfer(five,
975	<	MEDIUM_DELAY_MS, MILLISECONDS));
1103	<	threadAssertTrue(q.isEmpty());
973	>	public void realRun() throws InterruptedException {
974	>	assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
975	>	checkEmpty(q);
976		}});
977
978	<	Thread.sleep(SHORT_DELAY_MS);
978	>	while (q.size() != 2)
979	>	Thread.yield();
980		assertEquals(2, q.size());
981	<	assertEquals(four, q.poll());
982	<	assertEquals(five, q.poll());
981	>	assertSame(four, q.poll());
982	>	assertSame(five, q.poll());
983		checkEmpty(q);
984	<	t.join();
984	>	awaitTermination(t, MEDIUM_DELAY_MS);
985		}
986
987		/**
988	<	* tryTransfer attempts to enqueue into the q and fails returning
989	<	* false not enqueueing and the successive poll is null
988	>	* tryTransfer attempts to enqueue into the queue and fails
989	>	* returning false not enqueueing and the successive poll is null
990		*/
991		public void testTryTransfer8() throws InterruptedException {
992		final LinkedTransferQueue q = new LinkedTransferQueue();
993		assertTrue(q.offer(four));
994		assertEquals(1, q.size());
995	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
995	>	long t0 = System.nanoTime();
996	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
997	>	assertTrue(millisElapsedSince(t0) >= timeoutMillis());
998		assertEquals(1, q.size());
999	<	assertEquals(four, q.poll());
999	>	assertSame(four, q.poll());
1000		assertNull(q.poll());
1001		checkEmpty(q);
1002		}
1003
1004		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1005		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1006	<	assertTrue(q.isEmpty());
1006	>	checkEmpty(q);
1007		for (int i = 0; i < n; i++) {
1008		assertEquals(i, q.size());
1009		assertTrue(q.offer(i));
#	Line 1137 | Line 1012 | public class LinkedTransferQueueTest ext
1012		assertFalse(q.isEmpty());
1013		return q;
1014		}
1015	+
1016	+	/**
1017	+	* remove(null), contains(null) always return false
1018	+	*/
1019	+	public void testNeverContainsNull() {
1020	+	Collection<?>[] qs = {
1021	+	new LinkedTransferQueue<Object>(),
1022	+	populatedQueue(2),
1023	+	};
1024	+
1025	+	for (Collection<?> q : qs) {
1026	+	assertFalse(q.contains(null));
1027	+	assertFalse(q.remove(null));
1028	+	}
1029	+	}
1030		}

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