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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.44 by jsr166, Tue Mar 15 19:47:06 2011 UTC vs.
Revision 1.82 by jsr166, Sun Aug 11 22:29:27 2019 UTC

#	Line 5 | Line 5
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.Callable;
19	>	import java.util.concurrent.CountDownLatch;
20	>	import java.util.concurrent.Executors;
21	>	import java.util.concurrent.ExecutorService;
22	>	import java.util.concurrent.LinkedTransferQueue;
23	>
24		import junit.framework.Test;
23	–	import junit.framework.TestSuite;
25
26		@SuppressWarnings({"unchecked", "rawtypes"})
27		public class LinkedTransferQueueTest extends JSR166TestCase {
27	–
28		public static class Generic extends BlockingQueueTest {
29		protected BlockingQueue emptyCollection() {
30		return new LinkedTransferQueue();
#	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() {
39	+	class Implementation implements CollectionImplementation {
40	+	public Class<?> klazz() { return LinkedTransferQueue.class; }
41	+	public Collection emptyCollection() { return new LinkedTransferQueue(); }
42	+	public Object makeElement(int i) { return i; }
43	+	public boolean isConcurrent() { return true; }
44	+	public boolean permitsNulls() { return false; }
45	+	}
46		return newTestSuite(LinkedTransferQueueTest.class,
47	<	new Generic().testSuite());
47	>	new Generic().testSuite(),
48	>	CollectionTest.testSuite(new Implementation()));
49		}
50
51		/**
#	Line 65 | Line 73 | public class LinkedTransferQueueTest ext
73		* NullPointerException
74		*/
75		public void testConstructor3() {
76	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
77		try {
78	<	Integer[] ints = new Integer[SIZE];
70	<	new LinkedTransferQueue(Arrays.asList(ints));
78	>	new LinkedTransferQueue(elements);
79		shouldThrow();
80		} catch (NullPointerException success) {}
81		}
#	Line 77 | Line 85 | public class LinkedTransferQueueTest ext
85		* throws NullPointerException
86		*/
87		public void testConstructor4() {
88	+	Integer[] ints = new Integer[SIZE];
89	+	for (int i = 0; i < SIZE - 1; ++i)
90	+	ints[i] = i;
91	+	Collection<Integer> elements = Arrays.asList(ints);
92		try {
93	<	Integer[] ints = new Integer[SIZE];
82	<	for (int i = 0; i < SIZE - 1; ++i) {
83	<	ints[i] = i;
84	<	}
85	<	new LinkedTransferQueue(Arrays.asList(ints));
93	>	new LinkedTransferQueue(elements);
94		shouldThrow();
95		} catch (NullPointerException success) {}
96		}
#	Line 115 | Line 123 | public class LinkedTransferQueueTest ext
123		* remainingCapacity() always returns Integer.MAX_VALUE
124		*/
125		public void testRemainingCapacity() {
126	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
126	>	BlockingQueue q = populatedQueue(SIZE);
127		for (int i = 0; i < SIZE; ++i) {
128		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
129		assertEquals(SIZE - i, q.size());
130	<	q.remove();
130	>	assertEquals(i, q.remove());
131		}
132		for (int i = 0; i < SIZE; ++i) {
133		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
134		assertEquals(i, q.size());
135	<	q.add(i);
135	>	assertTrue(q.add(i));
136		}
137		}
138
139		/**
132	–	* offer(null) throws NullPointerException
133	–	*/
134	–	public void testOfferNull() {
135	–	try {
136	–	LinkedTransferQueue q = new LinkedTransferQueue();
137	–	q.offer(null);
138	–	shouldThrow();
139	–	} catch (NullPointerException success) {}
140	–	}
141	–
142	–	/**
143	–	* add(null) throws NullPointerException
144	–	*/
145	–	public void testAddNull() {
146	–	try {
147	–	LinkedTransferQueue q = new LinkedTransferQueue();
148	–	q.add(null);
149	–	shouldThrow();
150	–	} catch (NullPointerException success) {}
151	–	}
152	–
153	–	/**
154	–	* addAll(null) throws NullPointerException
155	–	*/
156	–	public void testAddAll1() {
157	–	try {
158	–	LinkedTransferQueue q = new LinkedTransferQueue();
159	–	q.addAll(null);
160	–	shouldThrow();
161	–	} catch (NullPointerException success) {}
162	–	}
163	–
164	–	/**
140		* addAll(this) throws IllegalArgumentException
141		*/
142		public void testAddAllSelf() {
143	+	LinkedTransferQueue q = populatedQueue(SIZE);
144		try {
169	–	LinkedTransferQueue q = populatedQueue(SIZE);
145		q.addAll(q);
146		shouldThrow();
147		} catch (IllegalArgumentException success) {}
148		}
149
150		/**
176	–	* addAll of a collection with null elements throws NullPointerException
177	–	*/
178	–	public void testAddAll2() {
179	–	try {
180	–	LinkedTransferQueue q = new LinkedTransferQueue();
181	–	Integer[] ints = new Integer[SIZE];
182	–	q.addAll(Arrays.asList(ints));
183	–	shouldThrow();
184	–	} catch (NullPointerException success) {}
185	–	}
186	–
187	–	/**
151		* addAll of a collection with any null elements throws
152		* NullPointerException after possibly adding some elements
153		*/
154		public void testAddAll3() {
155	+	LinkedTransferQueue q = new LinkedTransferQueue();
156	+	Integer[] ints = new Integer[SIZE];
157	+	for (int i = 0; i < SIZE - 1; ++i)
158	+	ints[i] = i;
159		try {
193	–	LinkedTransferQueue q = new LinkedTransferQueue();
194	–	Integer[] ints = new Integer[SIZE];
195	–	for (int i = 0; i < SIZE - 1; ++i) {
196	–	ints[i] = i;
197	–	}
160		q.addAll(Arrays.asList(ints));
161		shouldThrow();
162		} catch (NullPointerException success) {}
#	Line 218 | Line 180 | public class LinkedTransferQueueTest ext
180		}
181
182		/**
221	–	* put(null) throws NullPointerException
222	–	*/
223	–	public void testPutNull() throws InterruptedException {
224	–	try {
225	–	LinkedTransferQueue q = new LinkedTransferQueue();
226	–	q.put(null);
227	–	shouldThrow();
228	–	} catch (NullPointerException success) {}
229	–	}
230	–
231	–	/**
183		* all elements successfully put are contained
184		*/
185		public void testPut() {
186	<	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
186	>	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
187		for (int i = 0; i < SIZE; ++i) {
188	<	assertEquals(q.size(), i);
188	>	assertEquals(i, q.size());
189		q.put(i);
190		assertTrue(q.contains(i));
191		}
#	Line 254 | Line 205 | public class LinkedTransferQueueTest ext
205		* take removes existing elements until empty, then blocks interruptibly
206		*/
207		public void testBlockingTake() throws InterruptedException {
208	<	final BlockingQueue<Integer> q = populatedQueue(SIZE);
209	<	final CountDownLatch aboutToWait = new CountDownLatch(1);
208	>	final BlockingQueue q = populatedQueue(SIZE);
209	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
210		Thread t = newStartedThread(new CheckedRunnable() {
211		public void realRun() throws InterruptedException {
212	<	for (int i = 0; i < SIZE; ++i) {
213	<	assertEquals(i, (int) q.take());
214	<	}
215	<	aboutToWait.countDown();
212	>	for (int i = 0; i < SIZE; i++) assertEquals(i, q.take());
213	>
214	>	Thread.currentThread().interrupt();
215	>	try {
216	>	q.take();
217	>	shouldThrow();
218	>	} catch (InterruptedException success) {}
219	>	assertFalse(Thread.interrupted());
220	>
221	>	pleaseInterrupt.countDown();
222		try {
223		q.take();
224		shouldThrow();
225		} catch (InterruptedException success) {}
226	+	assertFalse(Thread.interrupted());
227		}});
228
229	<	aboutToWait.await();
230	<	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
229	>	await(pleaseInterrupt);
230	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
231		t.interrupt();
232	<	awaitTermination(t, MEDIUM_DELAY_MS);
275	<	checkEmpty(q);
232	>	awaitTermination(t);
233		}
234
235		/**
#	Line 304 | Line 261 | public class LinkedTransferQueueTest ext
261		*/
262		public void testTimedPoll() throws InterruptedException {
263		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
264	<	for (int i = 0; i < SIZE; ++i) {
265	<	long t0 = System.nanoTime();
266	<	assertEquals(i, (int) q.poll(SMALL_DELAY_MS, MILLISECONDS));
267	<	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
268	<	}
269	<	long t0 = System.nanoTime();
270	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
271	<	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
264	>	long startTime = System.nanoTime();
265	>	for (int i = 0; i < SIZE; ++i)
266	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
267	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
268	>
269	>	startTime = System.nanoTime();
270	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
271	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
272		checkEmpty(q);
273		}
274
#	Line 321 | Line 278 | public class LinkedTransferQueueTest ext
278		*/
279		public void testInterruptedTimedPoll() throws InterruptedException {
280		final BlockingQueue<Integer> q = populatedQueue(SIZE);
281	<	final CountDownLatch aboutToWait = new CountDownLatch(1);
281	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
282		Thread t = newStartedThread(new CheckedRunnable() {
283		public void realRun() throws InterruptedException {
284	<	for (int i = 0; i < SIZE; ++i) {
285	<	long t0 = System.nanoTime();
284	>	long startTime = System.nanoTime();
285	>	for (int i = 0; i < SIZE; i++)
286		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
287	<	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
288	<	}
289	<	long t0 = System.nanoTime();
290	<	aboutToWait.countDown();
287	>
288	>	Thread.currentThread().interrupt();
289	>	try {
290	>	q.poll(randomTimeout(), randomTimeUnit());
291	>	shouldThrow();
292	>	} catch (InterruptedException success) {}
293	>	assertFalse(Thread.interrupted());
294	>
295	>	pleaseInterrupt.countDown();
296		try {
297	<	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
297	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
298		shouldThrow();
299	<	} catch (InterruptedException success) {
300	<	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
301	<	}
299	>	} catch (InterruptedException success) {}
300	>	assertFalse(Thread.interrupted());
301	>
302	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
303		}});
304
305	<	aboutToWait.await();
306	<	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
305	>	await(pleaseInterrupt);
306	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
307		t.interrupt();
308	<	awaitTermination(t, MEDIUM_DELAY_MS);
308	>	awaitTermination(t);
309		checkEmpty(q);
310		}
311
#	Line 354 | Line 317 | public class LinkedTransferQueueTest ext
317		final BlockingQueue<Integer> q = populatedQueue(SIZE);
318		Thread t = newStartedThread(new CheckedRunnable() {
319		public void realRun() throws InterruptedException {
320	+	long startTime = System.nanoTime();
321		Thread.currentThread().interrupt();
322	<	for (int i = 0; i < SIZE; ++i) {
323	<	long t0 = System.nanoTime();
360	<	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
361	<	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
362	<	}
322	>	for (int i = 0; i < SIZE; ++i)
323	>	assertEquals(i, (int) q.poll(randomTimeout(), randomTimeUnit()));
324		try {
325	<	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
325	>	q.poll(randomTimeout(), randomTimeUnit());
326		shouldThrow();
327		} catch (InterruptedException success) {}
328	+	assertFalse(Thread.interrupted());
329	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
330		}});
331
332	<	awaitTermination(t, MEDIUM_DELAY_MS);
332	>	awaitTermination(t);
333		checkEmpty(q);
334		}
335
#	Line 417 | Line 380 | public class LinkedTransferQueueTest ext
380		}
381
382		/**
420	–	* remove(x) removes x and returns true if present
421	–	*/
422	–	public void testRemoveElement() throws InterruptedException {
423	–	LinkedTransferQueue q = populatedQueue(SIZE);
424	–	for (int i = 1; i < SIZE; i+=2) {
425	–	assertTrue(q.contains(i));
426	–	assertTrue(q.remove(i));
427	–	assertFalse(q.contains(i));
428	–	assertTrue(q.contains(i-1));
429	–	}
430	–	for (int i = 0; i < SIZE; i+=2) {
431	–	assertTrue(q.contains(i));
432	–	assertTrue(q.remove(i));
433	–	assertFalse(q.contains(i));
434	–	assertFalse(q.remove(i+1));
435	–	assertFalse(q.contains(i+1));
436	–	}
437	–	checkEmpty(q);
438	–	}
439	–
440	–	/**
383		* An add following remove(x) succeeds
384		*/
385		public void testRemoveElementAndAdd() throws InterruptedException {
#	Line 483 | Line 425 | public class LinkedTransferQueueTest ext
425		*/
426		public void testContainsAll() {
427		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
428	<	LinkedTransferQueue<Integer> p = new LinkedTransferQueue<Integer>();
428	>	LinkedTransferQueue<Integer> p = new LinkedTransferQueue<>();
429		for (int i = 0; i < SIZE; ++i) {
430		assertTrue(q.containsAll(p));
431		assertFalse(p.containsAll(q));
#	Line 533 | Line 475 | public class LinkedTransferQueueTest ext
475		*/
476		public void testToArray() {
477		LinkedTransferQueue q = populatedQueue(SIZE);
478	<	Object[] o = q.toArray();
479	<	for (int i = 0; i < o.length; i++) {
480	<	assertSame(o[i], q.poll());
481	<	}
478	>	Object[] a = q.toArray();
479	>	assertSame(Object[].class, a.getClass());
480	>	for (Object o : a)
481	>	assertSame(o, q.poll());
482	>	assertTrue(q.isEmpty());
483		}
484
485		/**
#	Line 547 | Line 490 | public class LinkedTransferQueueTest ext
490		Integer[] ints = new Integer[SIZE];
491		Integer[] array = q.toArray(ints);
492		assertSame(ints, array);
493	<	for (int i = 0; i < ints.length; i++) {
494	<	assertSame(ints[i], q.poll());
495	<	}
553	<	}
554	<
555	<	/**
556	<	* toArray(null) throws NullPointerException
557	<	*/
558	<	public void testToArray_NullArg() {
559	<	LinkedTransferQueue q = populatedQueue(SIZE);
560	<	try {
561	<	q.toArray(null);
562	<	shouldThrow();
563	<	} catch (NullPointerException success) {}
493	>	for (Integer o : ints)
494	>	assertSame(o, q.poll());
495	>	assertTrue(q.isEmpty());
496		}
497
498		/**
#	Line 580 | Line 512 | public class LinkedTransferQueueTest ext
512		public void testIterator() throws InterruptedException {
513		LinkedTransferQueue q = populatedQueue(SIZE);
514		Iterator it = q.iterator();
515	<	int i = 0;
516	<	while (it.hasNext()) {
517	<	assertEquals(it.next(), i++);
518	<	}
515	>	int i;
516	>	for (i = 0; it.hasNext(); i++)
517	>	assertTrue(q.contains(it.next()));
518	>	assertEquals(i, SIZE);
519	>	assertIteratorExhausted(it);
520	>
521	>	it = q.iterator();
522	>	for (i = 0; it.hasNext(); i++)
523	>	assertEquals(it.next(), q.take());
524		assertEquals(i, SIZE);
525	+	assertIteratorExhausted(it);
526	+	}
527	+
528	+	/**
529	+	* iterator of empty collection has no elements
530	+	*/
531	+	public void testEmptyIterator() {
532	+	assertIteratorExhausted(new LinkedTransferQueue().iterator());
533		}
534
535		/**
#	Line 610 | Line 555 | public class LinkedTransferQueueTest ext
555		* iterator ordering is FIFO
556		*/
557		public void testIteratorOrdering() {
558	<	final LinkedTransferQueue<Integer> q
614	<	= new LinkedTransferQueue<Integer>();
558	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
559		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
560		q.add(one);
561		q.add(two);
#	Line 646 | Line 590 | public class LinkedTransferQueueTest ext
590		LinkedTransferQueue q = populatedQueue(SIZE);
591		String s = q.toString();
592		for (int i = 0; i < SIZE; ++i) {
593	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
593	>	assertTrue(s.contains(String.valueOf(i)));
594		}
595		}
596
#	Line 655 | Line 599 | public class LinkedTransferQueueTest ext
599		*/
600		public void testOfferInExecutor() {
601		final LinkedTransferQueue q = new LinkedTransferQueue();
602	<	final CountDownLatch threadsStarted = new CountDownLatch(2);
603	<	ExecutorService executor = Executors.newFixedThreadPool(2);
604	<
661	<	executor.execute(new CheckedRunnable() {
662	<	public void realRun() throws InterruptedException {
663	<	threadsStarted.countDown();
664	<	threadsStarted.await();
665	<	assertTrue(q.offer(one, MEDIUM_DELAY_MS, MILLISECONDS));
666	<	}});
602	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
603	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
604	>	try (PoolCleaner cleaner = cleaner(executor)) {
605
606	<	executor.execute(new CheckedRunnable() {
607	<	public void realRun() throws InterruptedException {
608	<	threadsStarted.countDown();
609	<	threadsStarted.await();
610	<	assertSame(one, q.take());
611	<	checkEmpty(q);
612	<	}});
606	>	executor.execute(new CheckedRunnable() {
607	>	public void realRun() throws InterruptedException {
608	>	threadsStarted.await();
609	>	long startTime = System.nanoTime();
610	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
611	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
612	>	}});
613
614	<	joinPool(executor);
614	>	executor.execute(new CheckedRunnable() {
615	>	public void realRun() throws InterruptedException {
616	>	threadsStarted.await();
617	>	assertSame(one, q.take());
618	>	checkEmpty(q);
619	>	}});
620	>	}
621		}
622
623		/**
#	Line 681 | Line 625 | public class LinkedTransferQueueTest ext
625		*/
626		public void testPollInExecutor() {
627		final LinkedTransferQueue q = new LinkedTransferQueue();
628	<	final CountDownLatch threadsStarted = new CountDownLatch(2);
629	<	ExecutorService executor = Executors.newFixedThreadPool(2);
630	<
687	<	executor.execute(new CheckedRunnable() {
688	<	public void realRun() throws InterruptedException {
689	<	assertNull(q.poll());
690	<	threadsStarted.countDown();
691	<	threadsStarted.await();
692	<	assertSame(one, q.poll(SMALL_DELAY_MS, MILLISECONDS));
693	<	checkEmpty(q);
694	<	}});
628	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
629	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
630	>	try (PoolCleaner cleaner = cleaner(executor)) {
631
632	<	executor.execute(new CheckedRunnable() {
633	<	public void realRun() throws InterruptedException {
634	<	threadsStarted.countDown();
635	<	threadsStarted.await();
636	<	q.put(one);
637	<	}});
632	>	executor.execute(new CheckedRunnable() {
633	>	public void realRun() throws InterruptedException {
634	>	assertNull(q.poll());
635	>	threadsStarted.await();
636	>	long startTime = System.nanoTime();
637	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
638	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
639	>	checkEmpty(q);
640	>	}});
641
642	<	joinPool(executor);
642	>	executor.execute(new CheckedRunnable() {
643	>	public void realRun() throws InterruptedException {
644	>	threadsStarted.await();
645	>	q.put(one);
646	>	}});
647	>	}
648		}
649
650		/**
651	<	* A deserialized serialized queue has same elements in same order
651	>	* A deserialized/reserialized queue has same elements in same order
652		*/
653		public void testSerialization() throws Exception {
654	<	LinkedTransferQueue q = populatedQueue(SIZE);
655	<
712	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
713	<	ObjectOutputStream out
714	<	= new ObjectOutputStream(new BufferedOutputStream(bout));
715	<	out.writeObject(q);
716	<	out.close();
717	<
718	<	ByteArrayInputStream bin
719	<	= new ByteArrayInputStream(bout.toByteArray());
720	<	ObjectInputStream in
721	<	= new ObjectInputStream(new BufferedInputStream(bin));
722	<	LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
654	>	Queue x = populatedQueue(SIZE);
655	>	Queue y = serialClone(x);
656
657	<	assertEquals(q.size(), r.size());
658	<	assertEquals(q.toString(), r.toString());
659	<	assertTrue(Arrays.equals(q.toArray(), r.toArray()));
660	<	while (!q.isEmpty()) {
661	<	assertEquals(q.remove(), r.remove());
657	>	assertNotSame(y, x);
658	>	assertEquals(x.size(), y.size());
659	>	assertEquals(x.toString(), y.toString());
660	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
661	>	while (!x.isEmpty()) {
662	>	assertFalse(y.isEmpty());
663	>	assertEquals(x.remove(), y.remove());
664		}
665	<	}
731	<
732	<	/**
733	<	* drainTo(null) throws NullPointerException
734	<	*/
735	<	public void testDrainToNull() {
736	<	LinkedTransferQueue q = populatedQueue(SIZE);
737	<	try {
738	<	q.drainTo(null);
739	<	shouldThrow();
740	<	} catch (NullPointerException success) {}
741	<	}
742	<
743	<	/**
744	<	* drainTo(this) throws IllegalArgumentException
745	<	*/
746	<	public void testDrainToSelf() {
747	<	LinkedTransferQueue q = populatedQueue(SIZE);
748	<	try {
749	<	q.drainTo(q);
750	<	shouldThrow();
751	<	} catch (IllegalArgumentException success) {}
665	>	assertTrue(y.isEmpty());
666		}
667
668		/**
#	Line 758 | Line 672 | public class LinkedTransferQueueTest ext
672		LinkedTransferQueue q = populatedQueue(SIZE);
673		ArrayList l = new ArrayList();
674		q.drainTo(l);
675	<	assertEquals(q.size(), 0);
676	<	assertEquals(l.size(), SIZE);
675	>	assertEquals(0, q.size());
676	>	assertEquals(SIZE, l.size());
677		for (int i = 0; i < SIZE; ++i) {
678	<	assertEquals(l.get(i), i);
678	>	assertEquals(i, l.get(i));
679		}
680		q.add(zero);
681		q.add(one);
#	Line 770 | Line 684 | public class LinkedTransferQueueTest ext
684		assertTrue(q.contains(one));
685		l.clear();
686		q.drainTo(l);
687	<	assertEquals(q.size(), 0);
688	<	assertEquals(l.size(), 2);
687	>	assertEquals(0, q.size());
688	>	assertEquals(2, l.size());
689		for (int i = 0; i < 2; ++i) {
690	<	assertEquals(l.get(i), i);
690	>	assertEquals(i, l.get(i));
691		}
692		}
693
#	Line 789 | Line 703 | public class LinkedTransferQueueTest ext
703		ArrayList l = new ArrayList();
704		q.drainTo(l);
705		assertTrue(l.size() >= SIZE);
706	<	for (int i = 0; i < SIZE; ++i) {
707	<	assertEquals(l.get(i), i);
708	<	}
795	<	awaitTermination(t, MEDIUM_DELAY_MS);
706	>	for (int i = 0; i < SIZE; ++i)
707	>	assertEquals(i, l.get(i));
708	>	awaitTermination(t);
709		assertTrue(q.size() + l.size() >= SIZE);
710		}
711
712		/**
800	–	* drainTo(null, n) throws NullPointerException
801	–	*/
802	–	public void testDrainToNullN() {
803	–	LinkedTransferQueue q = populatedQueue(SIZE);
804	–	try {
805	–	q.drainTo(null, SIZE);
806	–	shouldThrow();
807	–	} catch (NullPointerException success) {}
808	–	}
809	–
810	–	/**
811	–	* drainTo(this, n) throws IllegalArgumentException
812	–	*/
813	–	public void testDrainToSelfN() {
814	–	LinkedTransferQueue q = populatedQueue(SIZE);
815	–	try {
816	–	q.drainTo(q, SIZE);
817	–	shouldThrow();
818	–	} catch (IllegalArgumentException success) {}
819	–	}
820	–
821	–	/**
713		* drainTo(c, n) empties first min(n, size) elements of queue into c
714		*/
715		public void testDrainToN() {
#	Line 830 | Line 721 | public class LinkedTransferQueueTest ext
721		ArrayList l = new ArrayList();
722		q.drainTo(l, i);
723		int k = (i < SIZE) ? i : SIZE;
724	<	assertEquals(l.size(), k);
725	<	assertEquals(q.size(), SIZE - k);
726	<	for (int j = 0; j < k; ++j) {
727	<	assertEquals(l.get(j), j);
728	<	}
838	<	while (q.poll() != null)
839	<	;
724	>	assertEquals(k, l.size());
725	>	assertEquals(SIZE - k, q.size());
726	>	for (int j = 0; j < k; ++j)
727	>	assertEquals(j, l.get(j));
728	>	do {} while (q.poll() != null);
729		}
730		}
731
#	Line 846 | Line 735 | public class LinkedTransferQueueTest ext
735		*/
736		public void testWaitingConsumer() throws InterruptedException {
737		final LinkedTransferQueue q = new LinkedTransferQueue();
738	<	assertEquals(q.getWaitingConsumerCount(), 0);
738	>	assertEquals(0, q.getWaitingConsumerCount());
739		assertFalse(q.hasWaitingConsumer());
740		final CountDownLatch threadStarted = new CountDownLatch(1);
741
742		Thread t = newStartedThread(new CheckedRunnable() {
743		public void realRun() throws InterruptedException {
744		threadStarted.countDown();
745	+	long startTime = System.nanoTime();
746		assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
747	<	assertEquals(q.getWaitingConsumerCount(), 0);
747	>	assertEquals(0, q.getWaitingConsumerCount());
748		assertFalse(q.hasWaitingConsumer());
749	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
750		}});
751
752		threadStarted.await();
753	<	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
754	<	assertEquals(q.getWaitingConsumerCount(), 1);
755	<	assertTrue(q.hasWaitingConsumer());
753	>	Callable<Boolean> oneConsumer
754	>	= new Callable<Boolean>() { public Boolean call() {
755	>	return q.hasWaitingConsumer()
756	>	&& q.getWaitingConsumerCount() == 1; }};
757	>	waitForThreadToEnterWaitState(t, oneConsumer);
758
759		assertTrue(q.offer(one));
760	<	assertEquals(q.getWaitingConsumerCount(), 0);
760	>	assertEquals(0, q.getWaitingConsumerCount());
761		assertFalse(q.hasWaitingConsumer());
762
763	<	awaitTermination(t, MEDIUM_DELAY_MS);
763	>	awaitTermination(t);
764		}
765
766		/**
#	Line 882 | Line 775 | public class LinkedTransferQueueTest ext
775		}
776
777		/**
778	<	* transfer waits until a poll occurs. The transfered element
779	<	* is returned by this associated poll.
778	>	* transfer waits until a poll occurs. The transferred element
779	>	* is returned by the associated poll.
780		*/
781		public void testTransfer2() throws InterruptedException {
782	<	final LinkedTransferQueue<Integer> q
890	<	= new LinkedTransferQueue<Integer>();
782	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
783		final CountDownLatch threadStarted = new CountDownLatch(1);
784
785		Thread t = newStartedThread(new CheckedRunnable() {
#	Line 898 | Line 790 | public class LinkedTransferQueueTest ext
790		}});
791
792		threadStarted.await();
793	<	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
794	<	assertEquals(1, q.size());
793	>	Callable<Boolean> oneElement
794	>	= new Callable<Boolean>() { public Boolean call() {
795	>	return !q.isEmpty() && q.size() == 1; }};
796	>	waitForThreadToEnterWaitState(t, oneElement);
797	>
798		assertSame(five, q.poll());
799		checkEmpty(q);
800	<	awaitTermination(t, MEDIUM_DELAY_MS);
800	>	awaitTermination(t);
801		}
802
803		/**
804		* transfer waits until a poll occurs, and then transfers in fifo order
805		*/
806		public void testTransfer3() throws InterruptedException {
807	<	final LinkedTransferQueue<Integer> q
913	<	= new LinkedTransferQueue<Integer>();
807	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
808
809		Thread first = newStartedThread(new CheckedRunnable() {
810		public void realRun() throws InterruptedException {
811		q.transfer(four);
812	<	assertTrue(!q.contains(four));
812	>	assertFalse(q.contains(four));
813		assertEquals(1, q.size());
814		}});
815
#	Line 958 | Line 852 | public class LinkedTransferQueueTest ext
852		assertEquals(1, q.size());
853		assertTrue(q.offer(three));
854		assertSame(four, q.poll());
855	<	awaitTermination(t, MEDIUM_DELAY_MS);
855	>	awaitTermination(t);
856		}
857
858		/**
859	<	* transfer waits until a take occurs. The transfered element
860	<	* is returned by this associated take.
859	>	* transfer waits until a take occurs. The transferred element
860	>	* is returned by the associated take.
861		*/
862		public void testTransfer5() throws InterruptedException {
863	<	final LinkedTransferQueue<Integer> q
970	<	= new LinkedTransferQueue<Integer>();
863	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
864
865		Thread t = newStartedThread(new CheckedRunnable() {
866		public void realRun() throws InterruptedException {
#	Line 981 | Line 874 | public class LinkedTransferQueueTest ext
874		assertEquals(1, q.size());
875		assertSame(four, q.take());
876		checkEmpty(q);
877	<	awaitTermination(t, MEDIUM_DELAY_MS);
877	>	awaitTermination(t);
878		}
879
880		/**
881		* tryTransfer(null) throws NullPointerException
882		*/
883		public void testTryTransfer1() {
884	+	final LinkedTransferQueue q = new LinkedTransferQueue();
885		try {
992	–	final LinkedTransferQueue q = new LinkedTransferQueue();
886		q.tryTransfer(null);
887		shouldThrow();
888		} catch (NullPointerException success) {}
#	Line 1023 | Line 916 | public class LinkedTransferQueueTest ext
916		assertTrue(q.tryTransfer(hotPotato));
917		}});
918
919	<	assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
919	>	long startTime = System.nanoTime();
920	>	assertSame(hotPotato, q.poll(LONG_DELAY_MS, MILLISECONDS));
921	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
922		checkEmpty(q);
923	<	awaitTermination(t, MEDIUM_DELAY_MS);
923	>	awaitTermination(t);
924		}
925
926		/**
#	Line 1047 | Line 942 | public class LinkedTransferQueueTest ext
942
943		assertSame(q.take(), hotPotato);
944		checkEmpty(q);
945	<	awaitTermination(t, MEDIUM_DELAY_MS);
945	>	awaitTermination(t);
946		}
947
948		/**
949	<	* tryTransfer waits the amount given, and throws
1055	<	* InterruptedException when interrupted.
949	>	* tryTransfer blocks interruptibly if no takers
950		*/
951		public void testTryTransfer5() throws InterruptedException {
952		final LinkedTransferQueue q = new LinkedTransferQueue();
953	<	final CountDownLatch threadStarted = new CountDownLatch(1);
953	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
954		assertTrue(q.isEmpty());
955
956		Thread t = newStartedThread(new CheckedRunnable() {
957		public void realRun() throws InterruptedException {
958	<	long t0 = System.nanoTime();
959	<	threadStarted.countDown();
958	>	long startTime = System.nanoTime();
959	>	Thread.currentThread().interrupt();
960	>	try {
961	>	q.tryTransfer(new Object(), randomTimeout(), randomTimeUnit());
962	>	shouldThrow();
963	>	} catch (InterruptedException success) {}
964	>	assertFalse(Thread.interrupted());
965	>
966	>	pleaseInterrupt.countDown();
967		try {
968		q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
969		shouldThrow();
970		} catch (InterruptedException success) {}
971	<	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
972	<	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
971	>	assertFalse(Thread.interrupted());
972	>
973	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
974		}});
975
976	<	threadStarted.await();
977	<	while (q.isEmpty())
1076	<	Thread.yield();
1077	<	Thread.sleep(SHORT_DELAY_MS);
976	>	await(pleaseInterrupt);
977	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
978		t.interrupt();
979	<	awaitTermination(t, MEDIUM_DELAY_MS);
979	>	awaitTermination(t);
980		checkEmpty(q);
981		}
982
#	Line 1088 | Line 988 | public class LinkedTransferQueueTest ext
988
989		Thread t = newStartedThread(new CheckedRunnable() {
990		public void realRun() throws InterruptedException {
991	<	long t0 = System.nanoTime();
991	>	long startTime = System.nanoTime();
992		assertFalse(q.tryTransfer(new Object(),
993	<	SHORT_DELAY_MS, MILLISECONDS));
994	<	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
993	>	timeoutMillis(), MILLISECONDS));
994	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
995		checkEmpty(q);
996		}});
997
998	<	awaitTermination(t, MEDIUM_DELAY_MS);
998	>	awaitTermination(t);
999		checkEmpty(q);
1000		}
1001
#	Line 1109 | Line 1009 | public class LinkedTransferQueueTest ext
1009
1010		Thread t = newStartedThread(new CheckedRunnable() {
1011		public void realRun() throws InterruptedException {
1012	<	assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
1012	>	long startTime = System.nanoTime();
1013	>	assertTrue(q.tryTransfer(five, LONG_DELAY_MS, MILLISECONDS));
1014	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1015		checkEmpty(q);
1016		}});
1017
#	Line 1119 | Line 1021 | public class LinkedTransferQueueTest ext
1021		assertSame(four, q.poll());
1022		assertSame(five, q.poll());
1023		checkEmpty(q);
1024	<	awaitTermination(t, MEDIUM_DELAY_MS);
1024	>	awaitTermination(t);
1025		}
1026
1027		/**
#	Line 1130 | Line 1032 | public class LinkedTransferQueueTest ext
1032		final LinkedTransferQueue q = new LinkedTransferQueue();
1033		assertTrue(q.offer(four));
1034		assertEquals(1, q.size());
1035	<	long t0 = System.nanoTime();
1036	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1037	<	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
1035	>	long startTime = System.nanoTime();
1036	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
1037	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
1038		assertEquals(1, q.size());
1039		assertSame(four, q.poll());
1040		assertNull(q.poll());
#	Line 1140 | Line 1042 | public class LinkedTransferQueueTest ext
1042		}
1043
1044		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1045	<	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1045	>	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
1046		checkEmpty(q);
1047		for (int i = 0; i < n; i++) {
1048		assertEquals(i, q.size());
#	Line 1150 | Line 1052 | public class LinkedTransferQueueTest ext
1052		assertFalse(q.isEmpty());
1053		return q;
1054		}
1055	+
1056	+	/**
1057	+	* remove(null), contains(null) always return false
1058	+	*/
1059	+	public void testNeverContainsNull() {
1060	+	Collection<?>[] qs = {
1061	+	new LinkedTransferQueue<Object>(),
1062	+	populatedQueue(2),
1063	+	};
1064	+
1065	+	for (Collection<?> q : qs) {
1066	+	assertFalse(q.contains(null));
1067	+	assertFalse(q.remove(null));
1068	+	}
1069	+	}
1070		}

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