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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.40 by jsr166, Thu Nov 18 18:37:55 2010 UTC vs.
Revision 1.67 by jsr166, Sun Oct 16 20:16:36 2016 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include John Vint
6		*/
7
8	<	import java.io.BufferedInputStream;
9	<	import java.io.BufferedOutputStream;
10	<	import java.io.ByteArrayInputStream;
11	<	import java.io.ByteArrayOutputStream;
12	<	import java.io.ObjectInputStream;
13	<	import java.io.ObjectOutputStream;
8	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
9	>
10		import java.util.ArrayList;
11		import java.util.Arrays;
12	+	import java.util.Collection;
13		import java.util.Iterator;
14		import java.util.List;
15		import java.util.NoSuchElementException;
16	<	import java.util.concurrent.*;
17	<	import static java.util.concurrent.TimeUnit.MILLISECONDS;
18	<	import static java.util.concurrent.TimeUnit.NANOSECONDS;
16	>	import java.util.Queue;
17	>	import java.util.concurrent.BlockingQueue;
18	>	import java.util.concurrent.CountDownLatch;
19	>	import java.util.concurrent.Executors;
20	>	import java.util.concurrent.ExecutorService;
21	>	import java.util.concurrent.LinkedTransferQueue;
22	>
23		import junit.framework.Test;
23	–	import junit.framework.TestSuite;
24
25		@SuppressWarnings({"unchecked", "rawtypes"})
26		public class LinkedTransferQueueTest extends JSR166TestCase {
27	–
27		public static class Generic extends BlockingQueueTest {
28		protected BlockingQueue emptyCollection() {
29		return new LinkedTransferQueue();
#	Line 32 | Line 31 | public class LinkedTransferQueueTest ext
31		}
32
33		public static void main(String[] args) {
34	<	junit.textui.TestRunner.run(suite());
34	>	main(suite(), args);
35		}
36
37		public static Test suite() {
38	<	return newTestSuite(LinkedTransferQueueTest.class,
39	<	new Generic().testSuite());
40	<	}
41	<
42	<	void checkEmpty(BlockingQueue q) {
43	<	try {
45	<	assertTrue(q.isEmpty());
46	<	assertEquals(0, q.size());
47	<	assertNull(q.peek());
48	<	assertNull(q.poll());
49	<	assertNull(q.poll(0, MILLISECONDS));
50	<	assertEquals(q.toString(), "[]");
51	<	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
52	<	assertFalse(q.iterator().hasNext());
53	<	try {
54	<	q.element();
55	<	shouldThrow();
56	<	} catch (NoSuchElementException success) {}
57	<	try {
58	<	q.iterator().next();
59	<	shouldThrow();
60	<	} catch (NoSuchElementException success) {}
61	<	try {
62	<	q.remove();
63	<	shouldThrow();
64	<	} catch (NoSuchElementException success) {}
65	<	} catch (InterruptedException ie) {
66	<	threadUnexpectedException(ie);
38	>	class Implementation implements CollectionImplementation {
39	>	public Class<?> klazz() { return LinkedTransferQueue.class; }
40	>	public Collection emptyCollection() { return new LinkedTransferQueue(); }
41	>	public Object makeElement(int i) { return i; }
42	>	public boolean isConcurrent() { return true; }
43	>	public boolean permitsNulls() { return false; }
44		}
45	+	return newTestSuite(LinkedTransferQueueTest.class,
46	+	new Generic().testSuite(),
47	+	CollectionTest.testSuite(new Implementation()));
48		}
49
50		/**
#	Line 92 | Line 72 | public class LinkedTransferQueueTest ext
72		* NullPointerException
73		*/
74		public void testConstructor3() {
75	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
76		try {
77	<	Integer[] ints = new Integer[SIZE];
97	<	new LinkedTransferQueue(Arrays.asList(ints));
77	>	new LinkedTransferQueue(elements);
78		shouldThrow();
79		} catch (NullPointerException success) {}
80		}
#	Line 104 | Line 84 | public class LinkedTransferQueueTest ext
84		* throws NullPointerException
85		*/
86		public void testConstructor4() {
87	+	Integer[] ints = new Integer[SIZE];
88	+	for (int i = 0; i < SIZE - 1; ++i)
89	+	ints[i] = i;
90	+	Collection<Integer> elements = Arrays.asList(ints);
91		try {
92	<	Integer[] ints = new Integer[SIZE];
109	<	for (int i = 0; i < SIZE - 1; ++i) {
110	<	ints[i] = i;
111	<	}
112	<	new LinkedTransferQueue(Arrays.asList(ints));
92	>	new LinkedTransferQueue(elements);
93		shouldThrow();
94		} catch (NullPointerException success) {}
95		}
#	Line 142 | Line 122 | public class LinkedTransferQueueTest ext
122		* remainingCapacity() always returns Integer.MAX_VALUE
123		*/
124		public void testRemainingCapacity() {
125	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
125	>	BlockingQueue q = populatedQueue(SIZE);
126		for (int i = 0; i < SIZE; ++i) {
127		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
128		assertEquals(SIZE - i, q.size());
129	<	q.remove();
129	>	assertEquals(i, q.remove());
130		}
131		for (int i = 0; i < SIZE; ++i) {
132		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
133		assertEquals(i, q.size());
134	<	q.add(i);
134	>	assertTrue(q.add(i));
135		}
136		}
137
138		/**
159	–	* offer(null) throws NullPointerException
160	–	*/
161	–	public void testOfferNull() {
162	–	try {
163	–	LinkedTransferQueue q = new LinkedTransferQueue();
164	–	q.offer(null);
165	–	shouldThrow();
166	–	} catch (NullPointerException success) {}
167	–	}
168	–
169	–	/**
170	–	* add(null) throws NullPointerException
171	–	*/
172	–	public void testAddNull() {
173	–	try {
174	–	LinkedTransferQueue q = new LinkedTransferQueue();
175	–	q.add(null);
176	–	shouldThrow();
177	–	} catch (NullPointerException success) {}
178	–	}
179	–
180	–	/**
181	–	* addAll(null) throws NullPointerException
182	–	*/
183	–	public void testAddAll1() {
184	–	try {
185	–	LinkedTransferQueue q = new LinkedTransferQueue();
186	–	q.addAll(null);
187	–	shouldThrow();
188	–	} catch (NullPointerException success) {}
189	–	}
190	–
191	–	/**
139		* addAll(this) throws IllegalArgumentException
140		*/
141		public void testAddAllSelf() {
142	+	LinkedTransferQueue q = populatedQueue(SIZE);
143		try {
196	–	LinkedTransferQueue q = populatedQueue(SIZE);
144		q.addAll(q);
145		shouldThrow();
146		} catch (IllegalArgumentException success) {}
147		}
148
149		/**
203	–	* addAll of a collection with null elements throws NullPointerException
204	–	*/
205	–	public void testAddAll2() {
206	–	try {
207	–	LinkedTransferQueue q = new LinkedTransferQueue();
208	–	Integer[] ints = new Integer[SIZE];
209	–	q.addAll(Arrays.asList(ints));
210	–	shouldThrow();
211	–	} catch (NullPointerException success) {}
212	–	}
213	–
214	–	/**
150		* addAll of a collection with any null elements throws
151		* NullPointerException after possibly adding some elements
152		*/
153		public void testAddAll3() {
154	+	LinkedTransferQueue q = new LinkedTransferQueue();
155	+	Integer[] ints = new Integer[SIZE];
156	+	for (int i = 0; i < SIZE - 1; ++i)
157	+	ints[i] = i;
158		try {
220	–	LinkedTransferQueue q = new LinkedTransferQueue();
221	–	Integer[] ints = new Integer[SIZE];
222	–	for (int i = 0; i < SIZE - 1; ++i) {
223	–	ints[i] = i;
224	–	}
159		q.addAll(Arrays.asList(ints));
160		shouldThrow();
161		} catch (NullPointerException success) {}
#	Line 245 | Line 179 | public class LinkedTransferQueueTest ext
179		}
180
181		/**
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	–	/**
182		* all elements successfully put are contained
183		*/
184		public void testPut() {
185		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
186		for (int i = 0; i < SIZE; ++i) {
187	<	assertEquals(q.size(), i);
187	>	assertEquals(i, q.size());
188		q.put(i);
189		assertTrue(q.contains(i));
190		}
#	Line 281 | Line 204 | public class LinkedTransferQueueTest ext
204		* take removes existing elements until empty, then blocks interruptibly
205		*/
206		public void testBlockingTake() throws InterruptedException {
207	<	final BlockingQueue<Integer> q = populatedQueue(SIZE);
208	<	final CountDownLatch aboutToWait = new CountDownLatch(1);
207	>	final BlockingQueue q = populatedQueue(SIZE);
208	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
209		Thread t = newStartedThread(new CheckedRunnable() {
210		public void realRun() throws InterruptedException {
211		for (int i = 0; i < SIZE; ++i) {
212	<	assertEquals(i, (int) q.take());
212	>	assertEquals(i, q.take());
213		}
214	<	aboutToWait.countDown();
214	>
215	>	Thread.currentThread().interrupt();
216	>	try {
217	>	q.take();
218	>	shouldThrow();
219	>	} catch (InterruptedException success) {}
220	>	assertFalse(Thread.interrupted());
221	>
222	>	pleaseInterrupt.countDown();
223		try {
224		q.take();
225		shouldThrow();
226		} catch (InterruptedException success) {}
227	+	assertFalse(Thread.interrupted());
228		}});
229
230	<	aboutToWait.await();
231	<	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
230	>	await(pleaseInterrupt);
231	>	assertThreadStaysAlive(t);
232		t.interrupt();
233	<	awaitTermination(t, MEDIUM_DELAY_MS);
302	<	checkEmpty(q);
233	>	awaitTermination(t);
234		}
235
236		/**
#	Line 331 | Line 262 | public class LinkedTransferQueueTest ext
262		*/
263		public void testTimedPoll() throws InterruptedException {
264		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
265	<	for (int i = 0; i < SIZE; ++i) {
266	<	long t0 = System.nanoTime();
267	<	assertEquals(i, (int) q.poll(SMALL_DELAY_MS, MILLISECONDS));
268	<	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
269	<	}
270	<	long t0 = System.nanoTime();
271	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
272	<	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
265	>	long startTime = System.nanoTime();
266	>	for (int i = 0; i < SIZE; ++i)
267	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
268	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
269	>
270	>	startTime = System.nanoTime();
271	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
272	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
273		checkEmpty(q);
274		}
275
#	Line 351 | Line 282 | public class LinkedTransferQueueTest ext
282		final CountDownLatch aboutToWait = new CountDownLatch(1);
283		Thread t = newStartedThread(new CheckedRunnable() {
284		public void realRun() throws InterruptedException {
285	<	for (int i = 0; i < SIZE; ++i) {
286	<	long t0 = System.nanoTime();
285	>	long startTime = System.nanoTime();
286	>	for (int i = 0; i < SIZE; ++i)
287		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
357	–	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
358	–	}
359	–	long t0 = System.nanoTime();
288		aboutToWait.countDown();
289		try {
290	<	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
290	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
291		shouldThrow();
292	<	} catch (InterruptedException success) {
293	<	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
366	<	}
292	>	} catch (InterruptedException success) {}
293	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
294		}});
295
296		aboutToWait.await();
297	<	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
297	>	waitForThreadToEnterWaitState(t);
298		t.interrupt();
299	<	awaitTermination(t, MEDIUM_DELAY_MS);
299	>	awaitTermination(t);
300		checkEmpty(q);
301		}
302
#	Line 381 | Line 308 | public class LinkedTransferQueueTest ext
308		final BlockingQueue<Integer> q = populatedQueue(SIZE);
309		Thread t = newStartedThread(new CheckedRunnable() {
310		public void realRun() throws InterruptedException {
311	+	long startTime = System.nanoTime();
312		Thread.currentThread().interrupt();
313	<	for (int i = 0; i < SIZE; ++i) {
386	<	long t0 = System.nanoTime();
313	>	for (int i = 0; i < SIZE; ++i)
314		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
388	–	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
389	–	}
315		try {
316	<	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
316	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
317		shouldThrow();
318		} catch (InterruptedException success) {}
319	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
320		}});
321
322	<	awaitTermination(t, MEDIUM_DELAY_MS);
322	>	awaitTermination(t);
323		checkEmpty(q);
324		}
325
#	Line 444 | Line 370 | public class LinkedTransferQueueTest ext
370		}
371
372		/**
447	–	* remove(x) removes x and returns true if present
448	–	*/
449	–	public void testRemoveElement() throws InterruptedException {
450	–	LinkedTransferQueue q = populatedQueue(SIZE);
451	–	for (int i = 1; i < SIZE; i += 2) {
452	–	assertTrue(q.remove(i));
453	–	}
454	–	for (int i = 0; i < SIZE; i += 2) {
455	–	assertTrue(q.remove(i));
456	–	assertFalse(q.remove(i + 1));
457	–	}
458	–	checkEmpty(q);
459	–	}
460	–
461	–	/**
373		* An add following remove(x) succeeds
374		*/
375		public void testRemoveElementAndAdd() throws InterruptedException {
#	Line 574 | Line 485 | public class LinkedTransferQueueTest ext
485		}
486
487		/**
577	–	* toArray(null) throws NullPointerException
578	–	*/
579	–	public void testToArray_NullArg() {
580	–	LinkedTransferQueue q = populatedQueue(SIZE);
581	–	try {
582	–	q.toArray(null);
583	–	shouldThrow();
584	–	} catch (NullPointerException success) {}
585	–	}
586	–
587	–	/**
488		* toArray(incompatible array type) throws ArrayStoreException
489		*/
490		public void testToArray1_BadArg() {
#	Line 601 | Line 501 | public class LinkedTransferQueueTest ext
501		public void testIterator() throws InterruptedException {
502		LinkedTransferQueue q = populatedQueue(SIZE);
503		Iterator it = q.iterator();
504	<	int i = 0;
505	<	while (it.hasNext()) {
506	<	assertEquals(it.next(), i++);
507	<	}
504	>	int i;
505	>	for (i = 0; it.hasNext(); i++)
506	>	assertTrue(q.contains(it.next()));
507	>	assertEquals(i, SIZE);
508	>	assertIteratorExhausted(it);
509	>
510	>	it = q.iterator();
511	>	for (i = 0; it.hasNext(); i++)
512	>	assertEquals(it.next(), q.take());
513		assertEquals(i, SIZE);
514	+	assertIteratorExhausted(it);
515	+	}
516	+
517	+	/**
518	+	* iterator of empty collection has no elements
519	+	*/
520	+	public void testEmptyIterator() {
521	+	assertIteratorExhausted(new LinkedTransferQueue().iterator());
522		}
523
524		/**
#	Line 667 | Line 580 | public class LinkedTransferQueueTest ext
580		LinkedTransferQueue q = populatedQueue(SIZE);
581		String s = q.toString();
582		for (int i = 0; i < SIZE; ++i) {
583	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
583	>	assertTrue(s.contains(String.valueOf(i)));
584		}
585		}
586
#	Line 676 | Line 589 | public class LinkedTransferQueueTest ext
589		*/
590		public void testOfferInExecutor() {
591		final LinkedTransferQueue q = new LinkedTransferQueue();
592	<	final CountDownLatch threadsStarted = new CountDownLatch(2);
593	<	ExecutorService executor = Executors.newFixedThreadPool(2);
594	<
682	<	executor.execute(new CheckedRunnable() {
683	<	public void realRun() throws InterruptedException {
684	<	threadsStarted.countDown();
685	<	threadsStarted.await();
686	<	assertTrue(q.offer(one, MEDIUM_DELAY_MS, MILLISECONDS));
687	<	}});
592	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
593	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
594	>	try (PoolCleaner cleaner = cleaner(executor)) {
595
596	<	executor.execute(new CheckedRunnable() {
597	<	public void realRun() throws InterruptedException {
598	<	threadsStarted.countDown();
599	<	threadsStarted.await();
600	<	assertSame(one, q.take());
601	<	checkEmpty(q);
602	<	}});
596	>	executor.execute(new CheckedRunnable() {
597	>	public void realRun() throws InterruptedException {
598	>	threadsStarted.await();
599	>	long startTime = System.nanoTime();
600	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
601	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
602	>	}});
603
604	<	joinPool(executor);
604	>	executor.execute(new CheckedRunnable() {
605	>	public void realRun() throws InterruptedException {
606	>	threadsStarted.await();
607	>	assertSame(one, q.take());
608	>	checkEmpty(q);
609	>	}});
610	>	}
611		}
612
613		/**
#	Line 702 | Line 615 | public class LinkedTransferQueueTest ext
615		*/
616		public void testPollInExecutor() {
617		final LinkedTransferQueue q = new LinkedTransferQueue();
618	<	final CountDownLatch threadsStarted = new CountDownLatch(2);
619	<	ExecutorService executor = Executors.newFixedThreadPool(2);
620	<
708	<	executor.execute(new CheckedRunnable() {
709	<	public void realRun() throws InterruptedException {
710	<	assertNull(q.poll());
711	<	threadsStarted.countDown();
712	<	threadsStarted.await();
713	<	assertSame(one, q.poll(SMALL_DELAY_MS, MILLISECONDS));
714	<	checkEmpty(q);
715	<	}});
618	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
619	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
620	>	try (PoolCleaner cleaner = cleaner(executor)) {
621
622	<	executor.execute(new CheckedRunnable() {
623	<	public void realRun() throws InterruptedException {
624	<	threadsStarted.countDown();
625	<	threadsStarted.await();
626	<	q.put(one);
627	<	}});
622	>	executor.execute(new CheckedRunnable() {
623	>	public void realRun() throws InterruptedException {
624	>	assertNull(q.poll());
625	>	threadsStarted.await();
626	>	long startTime = System.nanoTime();
627	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
628	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
629	>	checkEmpty(q);
630	>	}});
631
632	<	joinPool(executor);
632	>	executor.execute(new CheckedRunnable() {
633	>	public void realRun() throws InterruptedException {
634	>	threadsStarted.await();
635	>	q.put(one);
636	>	}});
637	>	}
638		}
639
640		/**
641		* A deserialized serialized queue has same elements in same order
642		*/
643		public void testSerialization() throws Exception {
644	<	LinkedTransferQueue q = populatedQueue(SIZE);
645	<
733	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
734	<	ObjectOutputStream out
735	<	= new ObjectOutputStream(new BufferedOutputStream(bout));
736	<	out.writeObject(q);
737	<	out.close();
738	<
739	<	ByteArrayInputStream bin
740	<	= new ByteArrayInputStream(bout.toByteArray());
741	<	ObjectInputStream in
742	<	= new ObjectInputStream(new BufferedInputStream(bin));
743	<	LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
644	>	Queue x = populatedQueue(SIZE);
645	>	Queue y = serialClone(x);
646
647	<	assertEquals(q.size(), r.size());
648	<	assertEquals(q.toString(), r.toString());
649	<	assertTrue(Arrays.equals(q.toArray(), r.toArray()));
650	<	while (!q.isEmpty()) {
651	<	assertEquals(q.remove(), r.remove());
647	>	assertNotSame(y, x);
648	>	assertEquals(x.size(), y.size());
649	>	assertEquals(x.toString(), y.toString());
650	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
651	>	while (!x.isEmpty()) {
652	>	assertFalse(y.isEmpty());
653	>	assertEquals(x.remove(), y.remove());
654		}
655	<	}
752	<
753	<	/**
754	<	* drainTo(null) throws NullPointerException
755	<	*/
756	<	public void testDrainToNull() {
757	<	LinkedTransferQueue q = populatedQueue(SIZE);
758	<	try {
759	<	q.drainTo(null);
760	<	shouldThrow();
761	<	} catch (NullPointerException success) {}
762	<	}
763	<
764	<	/**
765	<	* drainTo(this) throws IllegalArgumentException
766	<	*/
767	<	public void testDrainToSelf() {
768	<	LinkedTransferQueue q = populatedQueue(SIZE);
769	<	try {
770	<	q.drainTo(q);
771	<	shouldThrow();
772	<	} catch (IllegalArgumentException success) {}
655	>	assertTrue(y.isEmpty());
656		}
657
658		/**
#	Line 779 | Line 662 | public class LinkedTransferQueueTest ext
662		LinkedTransferQueue q = populatedQueue(SIZE);
663		ArrayList l = new ArrayList();
664		q.drainTo(l);
665	<	assertEquals(q.size(), 0);
666	<	assertEquals(l.size(), SIZE);
665	>	assertEquals(0, q.size());
666	>	assertEquals(SIZE, l.size());
667		for (int i = 0; i < SIZE; ++i) {
668	<	assertEquals(l.get(i), i);
668	>	assertEquals(i, l.get(i));
669		}
670		q.add(zero);
671		q.add(one);
#	Line 791 | Line 674 | public class LinkedTransferQueueTest ext
674		assertTrue(q.contains(one));
675		l.clear();
676		q.drainTo(l);
677	<	assertEquals(q.size(), 0);
678	<	assertEquals(l.size(), 2);
677	>	assertEquals(0, q.size());
678	>	assertEquals(2, l.size());
679		for (int i = 0; i < 2; ++i) {
680	<	assertEquals(l.get(i), i);
680	>	assertEquals(i, l.get(i));
681		}
682		}
683
#	Line 810 | Line 693 | public class LinkedTransferQueueTest ext
693		ArrayList l = new ArrayList();
694		q.drainTo(l);
695		assertTrue(l.size() >= SIZE);
696	<	for (int i = 0; i < SIZE; ++i) {
697	<	assertEquals(l.get(i), i);
698	<	}
816	<	awaitTermination(t, MEDIUM_DELAY_MS);
696	>	for (int i = 0; i < SIZE; ++i)
697	>	assertEquals(i, l.get(i));
698	>	awaitTermination(t);
699		assertTrue(q.size() + l.size() >= SIZE);
700		}
701
702		/**
821	–	* drainTo(null, n) throws NullPointerException
822	–	*/
823	–	public void testDrainToNullN() {
824	–	LinkedTransferQueue q = populatedQueue(SIZE);
825	–	try {
826	–	q.drainTo(null, SIZE);
827	–	shouldThrow();
828	–	} catch (NullPointerException success) {}
829	–	}
830	–
831	–	/**
832	–	* drainTo(this, n) throws IllegalArgumentException
833	–	*/
834	–	public void testDrainToSelfN() {
835	–	LinkedTransferQueue q = populatedQueue(SIZE);
836	–	try {
837	–	q.drainTo(q, SIZE);
838	–	shouldThrow();
839	–	} catch (IllegalArgumentException success) {}
840	–	}
841	–
842	–	/**
703		* drainTo(c, n) empties first min(n, size) elements of queue into c
704		*/
705		public void testDrainToN() {
#	Line 851 | Line 711 | public class LinkedTransferQueueTest ext
711		ArrayList l = new ArrayList();
712		q.drainTo(l, i);
713		int k = (i < SIZE) ? i : SIZE;
714	<	assertEquals(l.size(), k);
715	<	assertEquals(q.size(), SIZE - k);
716	<	for (int j = 0; j < k; ++j) {
717	<	assertEquals(l.get(j), j);
718	<	}
859	<	while (q.poll() != null)
860	<	;
714	>	assertEquals(k, l.size());
715	>	assertEquals(SIZE - k, q.size());
716	>	for (int j = 0; j < k; ++j)
717	>	assertEquals(j, l.get(j));
718	>	do {} while (q.poll() != null);
719		}
720		}
721
#	Line 867 | Line 725 | public class LinkedTransferQueueTest ext
725		*/
726		public void testWaitingConsumer() throws InterruptedException {
727		final LinkedTransferQueue q = new LinkedTransferQueue();
728	<	assertEquals(q.getWaitingConsumerCount(), 0);
728	>	assertEquals(0, q.getWaitingConsumerCount());
729		assertFalse(q.hasWaitingConsumer());
730		final CountDownLatch threadStarted = new CountDownLatch(1);
731
732		Thread t = newStartedThread(new CheckedRunnable() {
733		public void realRun() throws InterruptedException {
734		threadStarted.countDown();
735	+	long startTime = System.nanoTime();
736		assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
737	<	assertEquals(q.getWaitingConsumerCount(), 0);
737	>	assertEquals(0, q.getWaitingConsumerCount());
738		assertFalse(q.hasWaitingConsumer());
739	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
740		}});
741
742		threadStarted.await();
743	<	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
744	<	assertEquals(q.getWaitingConsumerCount(), 1);
743	>	waitForThreadToEnterWaitState(t);
744	>	assertEquals(1, q.getWaitingConsumerCount());
745		assertTrue(q.hasWaitingConsumer());
746
747		assertTrue(q.offer(one));
748	<	assertEquals(q.getWaitingConsumerCount(), 0);
748	>	assertEquals(0, q.getWaitingConsumerCount());
749		assertFalse(q.hasWaitingConsumer());
750
751	<	awaitTermination(t, MEDIUM_DELAY_MS);
751	>	awaitTermination(t);
752		}
753
754		/**
#	Line 919 | Line 779 | public class LinkedTransferQueueTest ext
779		}});
780
781		threadStarted.await();
782	<	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
782	>	waitForThreadToEnterWaitState(t);
783		assertEquals(1, q.size());
784		assertSame(five, q.poll());
785		checkEmpty(q);
786	<	awaitTermination(t, MEDIUM_DELAY_MS);
786	>	awaitTermination(t);
787		}
788
789		/**
#	Line 979 | Line 839 | public class LinkedTransferQueueTest ext
839		assertEquals(1, q.size());
840		assertTrue(q.offer(three));
841		assertSame(four, q.poll());
842	<	awaitTermination(t, MEDIUM_DELAY_MS);
842	>	awaitTermination(t);
843		}
844
845		/**
#	Line 1002 | Line 862 | public class LinkedTransferQueueTest ext
862		assertEquals(1, q.size());
863		assertSame(four, q.take());
864		checkEmpty(q);
865	<	awaitTermination(t, MEDIUM_DELAY_MS);
865	>	awaitTermination(t);
866		}
867
868		/**
869		* tryTransfer(null) throws NullPointerException
870		*/
871		public void testTryTransfer1() {
872	+	final LinkedTransferQueue q = new LinkedTransferQueue();
873		try {
1013	–	final LinkedTransferQueue q = new LinkedTransferQueue();
874		q.tryTransfer(null);
875		shouldThrow();
876		} catch (NullPointerException success) {}
#	Line 1044 | Line 904 | public class LinkedTransferQueueTest ext
904		assertTrue(q.tryTransfer(hotPotato));
905		}});
906
907	<	assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
907	>	long startTime = System.nanoTime();
908	>	assertSame(hotPotato, q.poll(LONG_DELAY_MS, MILLISECONDS));
909	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
910		checkEmpty(q);
911	<	awaitTermination(t, MEDIUM_DELAY_MS);
911	>	awaitTermination(t);
912		}
913
914		/**
#	Line 1068 | Line 930 | public class LinkedTransferQueueTest ext
930
931		assertSame(q.take(), hotPotato);
932		checkEmpty(q);
933	<	awaitTermination(t, MEDIUM_DELAY_MS);
933	>	awaitTermination(t);
934		}
935
936		/**
937	<	* tryTransfer waits the amount given, and throws
1076	<	* InterruptedException when interrupted.
937	>	* tryTransfer blocks interruptibly if no takers
938		*/
939		public void testTryTransfer5() throws InterruptedException {
940		final LinkedTransferQueue q = new LinkedTransferQueue();
941	<	final CountDownLatch threadStarted = new CountDownLatch(1);
941	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
942		assertTrue(q.isEmpty());
943
944		Thread t = newStartedThread(new CheckedRunnable() {
945		public void realRun() throws InterruptedException {
946	<	long t0 = System.nanoTime();
947	<	threadStarted.countDown();
946	>	long startTime = System.nanoTime();
947	>	Thread.currentThread().interrupt();
948		try {
949		q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
950		shouldThrow();
951		} catch (InterruptedException success) {}
952	<	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
953	<	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
952	>	assertFalse(Thread.interrupted());
953	>
954	>	pleaseInterrupt.countDown();
955	>	try {
956	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
957	>	shouldThrow();
958	>	} catch (InterruptedException success) {}
959	>	assertFalse(Thread.interrupted());
960	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
961		}});
962
963	<	threadStarted.await();
964	<	while (q.isEmpty())
1097	<	Thread.yield();
1098	<	Thread.sleep(SHORT_DELAY_MS);
963	>	await(pleaseInterrupt);
964	>	assertThreadStaysAlive(t);
965		t.interrupt();
966	<	awaitTermination(t, MEDIUM_DELAY_MS);
966	>	awaitTermination(t);
967		checkEmpty(q);
968		}
969
#	Line 1109 | Line 975 | public class LinkedTransferQueueTest ext
975
976		Thread t = newStartedThread(new CheckedRunnable() {
977		public void realRun() throws InterruptedException {
978	<	long t0 = System.nanoTime();
978	>	long startTime = System.nanoTime();
979		assertFalse(q.tryTransfer(new Object(),
980	<	SHORT_DELAY_MS, MILLISECONDS));
981	<	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
980	>	timeoutMillis(), MILLISECONDS));
981	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
982		checkEmpty(q);
983		}});
984
985	<	awaitTermination(t, MEDIUM_DELAY_MS);
985	>	awaitTermination(t);
986		checkEmpty(q);
987		}
988
#	Line 1130 | Line 996 | public class LinkedTransferQueueTest ext
996
997		Thread t = newStartedThread(new CheckedRunnable() {
998		public void realRun() throws InterruptedException {
999	<	assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
999	>	long startTime = System.nanoTime();
1000	>	assertTrue(q.tryTransfer(five, LONG_DELAY_MS, MILLISECONDS));
1001	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1002		checkEmpty(q);
1003		}});
1004
#	Line 1140 | Line 1008 | public class LinkedTransferQueueTest ext
1008		assertSame(four, q.poll());
1009		assertSame(five, q.poll());
1010		checkEmpty(q);
1011	<	awaitTermination(t, MEDIUM_DELAY_MS);
1011	>	awaitTermination(t);
1012		}
1013
1014		/**
1015	<	* tryTransfer attempts to enqueue into the q and fails returning
1016	<	* false not enqueueing and the successive poll is null
1015	>	* tryTransfer attempts to enqueue into the queue and fails
1016	>	* returning false not enqueueing and the successive poll is null
1017		*/
1018		public void testTryTransfer8() throws InterruptedException {
1019		final LinkedTransferQueue q = new LinkedTransferQueue();
1020		assertTrue(q.offer(four));
1021		assertEquals(1, q.size());
1022	<	long t0 = System.nanoTime();
1023	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1024	<	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
1022	>	long startTime = System.nanoTime();
1023	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
1024	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
1025		assertEquals(1, q.size());
1026		assertSame(four, q.poll());
1027		assertNull(q.poll());
#	Line 1171 | Line 1039 | public class LinkedTransferQueueTest ext
1039		assertFalse(q.isEmpty());
1040		return q;
1041		}
1042	+
1043	+	/**
1044	+	* remove(null), contains(null) always return false
1045	+	*/
1046	+	public void testNeverContainsNull() {
1047	+	Collection<?>[] qs = {
1048	+	new LinkedTransferQueue<Object>(),
1049	+	populatedQueue(2),
1050	+	};
1051	+
1052	+	for (Collection<?> q : qs) {
1053	+	assertFalse(q.contains(null));
1054	+	assertFalse(q.remove(null));
1055	+	}
1056	+	}
1057		}

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