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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 1.66 by jsr166, Sun Oct 18 04:48:32 2015 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.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 {
27	+	static class Implementation implements CollectionImplementation {
28	+	public Class<?> klazz() { return LinkedTransferQueue.class; }
29	+	public Collection emptyCollection() { return new LinkedTransferQueue(); }
30	+	public Object makeElement(int i) { return i; }
31	+	public boolean isConcurrent() { return true; }
32	+	public boolean permitsNulls() { return false; }
33	+	}
34
35		public static class Generic extends BlockingQueueTest {
36		protected BlockingQueue emptyCollection() {
#	Line 32 | Line 39 | public class LinkedTransferQueueTest ext
39		}
40
41		public static void main(String[] args) {
42	<	junit.textui.TestRunner.run(suite());
42	>	main(suite(), args);
43		}
44
45		public static Test suite() {
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>();
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());
213	>	assertEquals(i, q.take());
214		}
215	<	aboutToWait.countDown();
215	>
216	>	Thread.currentThread().interrupt();
217		try {
218		q.take();
219		shouldThrow();
220		} catch (InterruptedException success) {}
221	+	assertFalse(Thread.interrupted());
222	+
223	+	pleaseInterrupt.countDown();
224	+	try {
225	+	q.take();
226	+	shouldThrow();
227	+	} catch (InterruptedException success) {}
228	+	assertFalse(Thread.interrupted());
229		}});
230
231	<	aboutToWait.await();
232	<	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
231	>	await(pleaseInterrupt);
232	>	assertThreadStaysAlive(t);
233		t.interrupt();
234	<	awaitTermination(t, MEDIUM_DELAY_MS);
275	<	checkEmpty(q);
234	>	awaitTermination(t);
235		}
236
237		/**
#	Line 304 | Line 263 | public class LinkedTransferQueueTest ext
263		*/
264		public void testTimedPoll() throws InterruptedException {
265		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
266	<	for (int i = 0; i < SIZE; ++i) {
267	<	long t0 = System.nanoTime();
268	<	assertEquals(i, (int) q.poll(SMALL_DELAY_MS, MILLISECONDS));
269	<	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
270	<	}
271	<	long t0 = System.nanoTime();
272	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
273	<	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
266	>	long startTime = System.nanoTime();
267	>	for (int i = 0; i < SIZE; ++i)
268	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
269	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
270	>
271	>	startTime = System.nanoTime();
272	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
273	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
274		checkEmpty(q);
275		}
276
#	Line 324 | Line 283 | public class LinkedTransferQueueTest ext
283		final CountDownLatch aboutToWait = new CountDownLatch(1);
284		Thread t = newStartedThread(new CheckedRunnable() {
285		public void realRun() throws InterruptedException {
286	<	for (int i = 0; i < SIZE; ++i) {
287	<	long t0 = System.nanoTime();
286	>	long startTime = System.nanoTime();
287	>	for (int i = 0; i < SIZE; ++i)
288		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
330	–	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
331	–	}
332	–	long t0 = System.nanoTime();
289		aboutToWait.countDown();
290		try {
291	<	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
291	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
292		shouldThrow();
293	<	} catch (InterruptedException success) {
294	<	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
339	<	}
293	>	} catch (InterruptedException success) {}
294	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
295		}});
296
297		aboutToWait.await();
298	<	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
298	>	waitForThreadToEnterWaitState(t);
299		t.interrupt();
300	<	awaitTermination(t, MEDIUM_DELAY_MS);
300	>	awaitTermination(t);
301		checkEmpty(q);
302		}
303
#	Line 354 | Line 309 | public class LinkedTransferQueueTest ext
309		final BlockingQueue<Integer> q = populatedQueue(SIZE);
310		Thread t = newStartedThread(new CheckedRunnable() {
311		public void realRun() throws InterruptedException {
312	+	long startTime = System.nanoTime();
313		Thread.currentThread().interrupt();
314	<	for (int i = 0; i < SIZE; ++i) {
359	<	long t0 = System.nanoTime();
314	>	for (int i = 0; i < SIZE; ++i)
315		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
361	–	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
362	–	}
316		try {
317	<	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
317	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
318		shouldThrow();
319		} catch (InterruptedException success) {}
320	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
321		}});
322
323	<	awaitTermination(t, MEDIUM_DELAY_MS);
323	>	awaitTermination(t);
324		checkEmpty(q);
325		}
326
#	Line 417 | Line 371 | public class LinkedTransferQueueTest ext
371		}
372
373		/**
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	–	/**
374		* An add following remove(x) succeeds
375		*/
376		public void testRemoveElementAndAdd() throws InterruptedException {
#	Line 553 | Line 486 | public class LinkedTransferQueueTest ext
486		}
487
488		/**
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) {}
564	–	}
565	–
566	–	/**
489		* toArray(incompatible array type) throws ArrayStoreException
490		*/
491		public void testToArray1_BadArg() {
#	Line 580 | Line 502 | public class LinkedTransferQueueTest ext
502		public void testIterator() throws InterruptedException {
503		LinkedTransferQueue q = populatedQueue(SIZE);
504		Iterator it = q.iterator();
505	<	int i = 0;
506	<	while (it.hasNext()) {
507	<	assertEquals(it.next(), i++);
586	<	}
505	>	int i;
506	>	for (i = 0; it.hasNext(); i++)
507	>	assertTrue(q.contains(it.next()));
508		assertEquals(i, SIZE);
509	+	assertIteratorExhausted(it);
510	+
511	+	it = q.iterator();
512	+	for (i = 0; it.hasNext(); i++)
513	+	assertEquals(it.next(), q.take());
514	+	assertEquals(i, SIZE);
515	+	assertIteratorExhausted(it);
516	+	}
517	+
518	+	/**
519	+	* iterator of empty collection has no elements
520	+	*/
521	+	public void testEmptyIterator() {
522	+	assertIteratorExhausted(new LinkedTransferQueue().iterator());
523		}
524
525		/**
#	Line 646 | Line 581 | public class LinkedTransferQueueTest ext
581		LinkedTransferQueue q = populatedQueue(SIZE);
582		String s = q.toString();
583		for (int i = 0; i < SIZE; ++i) {
584	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
584	>	assertTrue(s.contains(String.valueOf(i)));
585		}
586		}
587
#	Line 655 | Line 590 | public class LinkedTransferQueueTest ext
590		*/
591		public void testOfferInExecutor() {
592		final LinkedTransferQueue q = new LinkedTransferQueue();
593	<	final CountDownLatch threadsStarted = new CountDownLatch(2);
594	<	ExecutorService executor = Executors.newFixedThreadPool(2);
595	<
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	<	}});
593	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
594	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
595	>	try (PoolCleaner cleaner = cleaner(executor)) {
596
597	<	executor.execute(new CheckedRunnable() {
598	<	public void realRun() throws InterruptedException {
599	<	threadsStarted.countDown();
600	<	threadsStarted.await();
601	<	assertSame(one, q.take());
602	<	checkEmpty(q);
603	<	}});
597	>	executor.execute(new CheckedRunnable() {
598	>	public void realRun() throws InterruptedException {
599	>	threadsStarted.await();
600	>	long startTime = System.nanoTime();
601	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
602	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
603	>	}});
604
605	<	joinPool(executor);
605	>	executor.execute(new CheckedRunnable() {
606	>	public void realRun() throws InterruptedException {
607	>	threadsStarted.await();
608	>	assertSame(one, q.take());
609	>	checkEmpty(q);
610	>	}});
611	>	}
612		}
613
614		/**
#	Line 681 | Line 616 | public class LinkedTransferQueueTest ext
616		*/
617		public void testPollInExecutor() {
618		final LinkedTransferQueue q = new LinkedTransferQueue();
619	<	final CountDownLatch threadsStarted = new CountDownLatch(2);
620	<	ExecutorService executor = Executors.newFixedThreadPool(2);
621	<
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	<	}});
619	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
620	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
621	>	try (PoolCleaner cleaner = cleaner(executor)) {
622
623	<	executor.execute(new CheckedRunnable() {
624	<	public void realRun() throws InterruptedException {
625	<	threadsStarted.countDown();
626	<	threadsStarted.await();
627	<	q.put(one);
628	<	}});
623	>	executor.execute(new CheckedRunnable() {
624	>	public void realRun() throws InterruptedException {
625	>	assertNull(q.poll());
626	>	threadsStarted.await();
627	>	long startTime = System.nanoTime();
628	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
629	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
630	>	checkEmpty(q);
631	>	}});
632
633	<	joinPool(executor);
633	>	executor.execute(new CheckedRunnable() {
634	>	public void realRun() throws InterruptedException {
635	>	threadsStarted.await();
636	>	q.put(one);
637	>	}});
638	>	}
639		}
640
641		/**
642		* A deserialized serialized queue has same elements in same order
643		*/
644		public void testSerialization() throws Exception {
645	<	LinkedTransferQueue q = populatedQueue(SIZE);
646	<
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();
645	>	Queue x = populatedQueue(SIZE);
646	>	Queue y = serialClone(x);
647
648	<	assertEquals(q.size(), r.size());
649	<	assertEquals(q.toString(), r.toString());
650	<	assertTrue(Arrays.equals(q.toArray(), r.toArray()));
651	<	while (!q.isEmpty()) {
652	<	assertEquals(q.remove(), r.remove());
648	>	assertNotSame(y, x);
649	>	assertEquals(x.size(), y.size());
650	>	assertEquals(x.toString(), y.toString());
651	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
652	>	while (!x.isEmpty()) {
653	>	assertFalse(y.isEmpty());
654	>	assertEquals(x.remove(), y.remove());
655		}
656	<	}
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) {}
656	>	assertTrue(y.isEmpty());
657		}
658
659		/**
#	Line 758 | Line 663 | public class LinkedTransferQueueTest ext
663		LinkedTransferQueue q = populatedQueue(SIZE);
664		ArrayList l = new ArrayList();
665		q.drainTo(l);
666	<	assertEquals(q.size(), 0);
667	<	assertEquals(l.size(), SIZE);
666	>	assertEquals(0, q.size());
667	>	assertEquals(SIZE, l.size());
668		for (int i = 0; i < SIZE; ++i) {
669	<	assertEquals(l.get(i), i);
669	>	assertEquals(i, l.get(i));
670		}
671		q.add(zero);
672		q.add(one);
#	Line 770 | Line 675 | public class LinkedTransferQueueTest ext
675		assertTrue(q.contains(one));
676		l.clear();
677		q.drainTo(l);
678	<	assertEquals(q.size(), 0);
679	<	assertEquals(l.size(), 2);
678	>	assertEquals(0, q.size());
679	>	assertEquals(2, l.size());
680		for (int i = 0; i < 2; ++i) {
681	<	assertEquals(l.get(i), i);
681	>	assertEquals(i, l.get(i));
682		}
683		}
684
#	Line 789 | Line 694 | public class LinkedTransferQueueTest ext
694		ArrayList l = new ArrayList();
695		q.drainTo(l);
696		assertTrue(l.size() >= SIZE);
697	<	for (int i = 0; i < SIZE; ++i) {
698	<	assertEquals(l.get(i), i);
699	<	}
795	<	awaitTermination(t, MEDIUM_DELAY_MS);
697	>	for (int i = 0; i < SIZE; ++i)
698	>	assertEquals(i, l.get(i));
699	>	awaitTermination(t);
700		assertTrue(q.size() + l.size() >= SIZE);
701		}
702
703		/**
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	–	/**
704		* drainTo(c, n) empties first min(n, size) elements of queue into c
705		*/
706		public void testDrainToN() {
#	Line 830 | Line 712 | public class LinkedTransferQueueTest ext
712		ArrayList l = new ArrayList();
713		q.drainTo(l, i);
714		int k = (i < SIZE) ? i : SIZE;
715	<	assertEquals(l.size(), k);
716	<	assertEquals(q.size(), SIZE - k);
717	<	for (int j = 0; j < k; ++j) {
718	<	assertEquals(l.get(j), j);
719	<	}
838	<	while (q.poll() != null)
839	<	;
715	>	assertEquals(k, l.size());
716	>	assertEquals(SIZE - k, q.size());
717	>	for (int j = 0; j < k; ++j)
718	>	assertEquals(j, l.get(j));
719	>	do {} while (q.poll() != null);
720		}
721		}
722
#	Line 846 | Line 726 | public class LinkedTransferQueueTest ext
726		*/
727		public void testWaitingConsumer() throws InterruptedException {
728		final LinkedTransferQueue q = new LinkedTransferQueue();
729	<	assertEquals(q.getWaitingConsumerCount(), 0);
729	>	assertEquals(0, q.getWaitingConsumerCount());
730		assertFalse(q.hasWaitingConsumer());
731		final CountDownLatch threadStarted = new CountDownLatch(1);
732
733		Thread t = newStartedThread(new CheckedRunnable() {
734		public void realRun() throws InterruptedException {
735		threadStarted.countDown();
736	+	long startTime = System.nanoTime();
737		assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
738	<	assertEquals(q.getWaitingConsumerCount(), 0);
738	>	assertEquals(0, q.getWaitingConsumerCount());
739		assertFalse(q.hasWaitingConsumer());
740	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
741		}});
742
743		threadStarted.await();
744	<	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
745	<	assertEquals(q.getWaitingConsumerCount(), 1);
744	>	waitForThreadToEnterWaitState(t);
745	>	assertEquals(1, q.getWaitingConsumerCount());
746		assertTrue(q.hasWaitingConsumer());
747
748		assertTrue(q.offer(one));
749	<	assertEquals(q.getWaitingConsumerCount(), 0);
749	>	assertEquals(0, q.getWaitingConsumerCount());
750		assertFalse(q.hasWaitingConsumer());
751
752	<	awaitTermination(t, MEDIUM_DELAY_MS);
752	>	awaitTermination(t);
753		}
754
755		/**
#	Line 898 | Line 780 | public class LinkedTransferQueueTest ext
780		}});
781
782		threadStarted.await();
783	<	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
783	>	waitForThreadToEnterWaitState(t);
784		assertEquals(1, q.size());
785		assertSame(five, q.poll());
786		checkEmpty(q);
787	<	awaitTermination(t, MEDIUM_DELAY_MS);
787	>	awaitTermination(t);
788		}
789
790		/**
#	Line 958 | Line 840 | public class LinkedTransferQueueTest ext
840		assertEquals(1, q.size());
841		assertTrue(q.offer(three));
842		assertSame(four, q.poll());
843	<	awaitTermination(t, MEDIUM_DELAY_MS);
843	>	awaitTermination(t);
844		}
845
846		/**
#	Line 981 | Line 863 | public class LinkedTransferQueueTest ext
863		assertEquals(1, q.size());
864		assertSame(four, q.take());
865		checkEmpty(q);
866	<	awaitTermination(t, MEDIUM_DELAY_MS);
866	>	awaitTermination(t);
867		}
868
869		/**
870		* tryTransfer(null) throws NullPointerException
871		*/
872		public void testTryTransfer1() {
873	+	final LinkedTransferQueue q = new LinkedTransferQueue();
874		try {
992	–	final LinkedTransferQueue q = new LinkedTransferQueue();
875		q.tryTransfer(null);
876		shouldThrow();
877		} catch (NullPointerException success) {}
#	Line 1023 | Line 905 | public class LinkedTransferQueueTest ext
905		assertTrue(q.tryTransfer(hotPotato));
906		}});
907
908	<	assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
908	>	long startTime = System.nanoTime();
909	>	assertSame(hotPotato, q.poll(LONG_DELAY_MS, MILLISECONDS));
910	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
911		checkEmpty(q);
912	<	awaitTermination(t, MEDIUM_DELAY_MS);
912	>	awaitTermination(t);
913		}
914
915		/**
#	Line 1047 | Line 931 | public class LinkedTransferQueueTest ext
931
932		assertSame(q.take(), hotPotato);
933		checkEmpty(q);
934	<	awaitTermination(t, MEDIUM_DELAY_MS);
934	>	awaitTermination(t);
935		}
936
937		/**
938	<	* tryTransfer waits the amount given, and throws
1055	<	* InterruptedException when interrupted.
938	>	* tryTransfer blocks interruptibly if no takers
939		*/
940		public void testTryTransfer5() throws InterruptedException {
941		final LinkedTransferQueue q = new LinkedTransferQueue();
942	<	final CountDownLatch threadStarted = new CountDownLatch(1);
942	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
943		assertTrue(q.isEmpty());
944
945		Thread t = newStartedThread(new CheckedRunnable() {
946		public void realRun() throws InterruptedException {
947	<	long t0 = System.nanoTime();
948	<	threadStarted.countDown();
947	>	long startTime = System.nanoTime();
948	>	Thread.currentThread().interrupt();
949		try {
950		q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
951		shouldThrow();
952		} catch (InterruptedException success) {}
953	<	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
954	<	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
953	>	assertFalse(Thread.interrupted());
954	>
955	>	pleaseInterrupt.countDown();
956	>	try {
957	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
958	>	shouldThrow();
959	>	} catch (InterruptedException success) {}
960	>	assertFalse(Thread.interrupted());
961	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
962		}});
963
964	<	threadStarted.await();
965	<	while (q.isEmpty())
1076	<	Thread.yield();
1077	<	Thread.sleep(SHORT_DELAY_MS);
964	>	await(pleaseInterrupt);
965	>	assertThreadStaysAlive(t);
966		t.interrupt();
967	<	awaitTermination(t, MEDIUM_DELAY_MS);
967	>	awaitTermination(t);
968		checkEmpty(q);
969		}
970
#	Line 1088 | Line 976 | public class LinkedTransferQueueTest ext
976
977		Thread t = newStartedThread(new CheckedRunnable() {
978		public void realRun() throws InterruptedException {
979	<	long t0 = System.nanoTime();
979	>	long startTime = System.nanoTime();
980		assertFalse(q.tryTransfer(new Object(),
981	<	SHORT_DELAY_MS, MILLISECONDS));
982	<	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
981	>	timeoutMillis(), MILLISECONDS));
982	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
983		checkEmpty(q);
984		}});
985
986	<	awaitTermination(t, MEDIUM_DELAY_MS);
986	>	awaitTermination(t);
987		checkEmpty(q);
988		}
989
#	Line 1109 | Line 997 | public class LinkedTransferQueueTest ext
997
998		Thread t = newStartedThread(new CheckedRunnable() {
999		public void realRun() throws InterruptedException {
1000	<	assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
1000	>	long startTime = System.nanoTime();
1001	>	assertTrue(q.tryTransfer(five, LONG_DELAY_MS, MILLISECONDS));
1002	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1003		checkEmpty(q);
1004		}});
1005
#	Line 1119 | Line 1009 | public class LinkedTransferQueueTest ext
1009		assertSame(four, q.poll());
1010		assertSame(five, q.poll());
1011		checkEmpty(q);
1012	<	awaitTermination(t, MEDIUM_DELAY_MS);
1012	>	awaitTermination(t);
1013		}
1014
1015		/**
#	Line 1130 | Line 1020 | public class LinkedTransferQueueTest ext
1020		final LinkedTransferQueue q = new LinkedTransferQueue();
1021		assertTrue(q.offer(four));
1022		assertEquals(1, q.size());
1023	<	long t0 = System.nanoTime();
1024	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1025	<	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
1023	>	long startTime = System.nanoTime();
1024	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
1025	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
1026		assertEquals(1, q.size());
1027		assertSame(four, q.poll());
1028		assertNull(q.poll());
#	Line 1150 | Line 1040 | public class LinkedTransferQueueTest ext
1040		assertFalse(q.isEmpty());
1041		return q;
1042		}
1043	+
1044	+	/**
1045	+	* remove(null), contains(null) always return false
1046	+	*/
1047	+	public void testNeverContainsNull() {
1048	+	Collection<?>[] qs = {
1049	+	new LinkedTransferQueue<Object>(),
1050	+	populatedQueue(2),
1051	+	};
1052	+
1053	+	for (Collection<?> q : qs) {
1054	+	assertFalse(q.contains(null));
1055	+	assertFalse(q.remove(null));
1056	+	}
1057	+	}
1058		}

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