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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.26 by jsr166, Tue Oct 19 00:41:14 2010 UTC vs.
Revision 1.63 by jsr166, Sun Oct 4 18:49:02 2015 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include John Vint
6		*/
7
8	<	import java.io.BufferedInputStream;
9	<	import java.io.BufferedOutputStream;
10	<	import java.io.ByteArrayInputStream;
11	<	import java.io.ByteArrayOutputStream;
12	<	import java.io.ObjectInputStream;
13	<	import java.io.ObjectOutputStream;
8	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
9	>
10		import java.util.ArrayList;
11		import java.util.Arrays;
12	+	import java.util.Collection;
13		import java.util.Iterator;
14		import java.util.List;
15		import java.util.NoSuchElementException;
16	<	import java.util.concurrent.*;
17	<	import static java.util.concurrent.TimeUnit.MILLISECONDS;
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;
22	–	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 31 | 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());
48	<	}
41	<
42	<	void checkEmpty(LinkedTransferQueue q) throws InterruptedException {
43	<	assertTrue(q.isEmpty());
44	<	assertEquals(0, q.size());
45	<	assertNull(q.peek());
46	<	assertNull(q.poll());
47	<	assertNull(q.poll(0, MILLISECONDS));
48	<	assertEquals(q.toString(), "[]");
49	<	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
50	<	assertFalse(q.iterator().hasNext());
51	<	try {
52	<	q.element();
53	<	shouldThrow();
54	<	} catch (NoSuchElementException success) {}
55	<	try {
56	<	q.iterator().next();
57	<	shouldThrow();
58	<	} catch (NoSuchElementException success) {}
59	<	try {
60	<	q.remove();
61	<	shouldThrow();
62	<	} catch (NoSuchElementException success) {}
47	>	new Generic().testSuite(),
48	>	CollectionTest.testSuite(new Implementation()));
49		}
50
51		/**
#	Line 87 | 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];
92	<	new LinkedTransferQueue(Arrays.asList(ints));
78	>	new LinkedTransferQueue(elements);
79		shouldThrow();
80		} catch (NullPointerException success) {}
81		}
#	Line 99 | 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];
104	<	for (int i = 0; i < SIZE - 1; ++i) {
105	<	ints[i] = i;
106	<	}
107	<	new LinkedTransferQueue(Arrays.asList(ints));
93	>	new LinkedTransferQueue(elements);
94		shouldThrow();
95		} catch (NullPointerException success) {}
96		}
#	Line 137 | 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		/**
154	–	* offer(null) throws NullPointerException
155	–	*/
156	–	public void testOfferNull() {
157	–	try {
158	–	LinkedTransferQueue q = new LinkedTransferQueue();
159	–	q.offer(null);
160	–	shouldThrow();
161	–	} catch (NullPointerException success) {}
162	–	}
163	–
164	–	/**
165	–	* add(null) throws NullPointerException
166	–	*/
167	–	public void testAddNull() {
168	–	try {
169	–	LinkedTransferQueue q = new LinkedTransferQueue();
170	–	q.add(null);
171	–	shouldThrow();
172	–	} catch (NullPointerException success) {}
173	–	}
174	–
175	–	/**
176	–	* addAll(null) throws NullPointerException
177	–	*/
178	–	public void testAddAll1() {
179	–	try {
180	–	LinkedTransferQueue q = new LinkedTransferQueue();
181	–	q.addAll(null);
182	–	shouldThrow();
183	–	} catch (NullPointerException success) {}
184	–	}
185	–
186	–	/**
140		* addAll(this) throws IllegalArgumentException
141		*/
142		public void testAddAllSelf() {
143	+	LinkedTransferQueue q = populatedQueue(SIZE);
144		try {
191	–	LinkedTransferQueue q = populatedQueue(SIZE);
145		q.addAll(q);
146		shouldThrow();
147		} catch (IllegalArgumentException success) {}
148		}
149
150		/**
198	–	* addAll of a collection with null elements throws NullPointerException
199	–	*/
200	–	public void testAddAll2() {
201	–	try {
202	–	LinkedTransferQueue q = new LinkedTransferQueue();
203	–	Integer[] ints = new Integer[SIZE];
204	–	q.addAll(Arrays.asList(ints));
205	–	shouldThrow();
206	–	} catch (NullPointerException success) {}
207	–	}
208	–
209	–	/**
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 {
215	–	LinkedTransferQueue q = new LinkedTransferQueue();
216	–	Integer[] ints = new Integer[SIZE];
217	–	for (int i = 0; i < SIZE - 1; ++i) {
218	–	ints[i] = i;
219	–	}
160		q.addAll(Arrays.asList(ints));
161		shouldThrow();
162		} catch (NullPointerException success) {}
#	Line 240 | Line 180 | public class LinkedTransferQueueTest ext
180		}
181
182		/**
243	–	* put(null) throws NullPointerException
244	–	*/
245	–	public void testPutNull() throws InterruptedException {
246	–	try {
247	–	LinkedTransferQueue q = new LinkedTransferQueue();
248	–	q.put(null);
249	–	shouldThrow();
250	–	} catch (NullPointerException success) {}
251	–	}
252	–
253	–	/**
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 273 | Line 202 | public class LinkedTransferQueueTest ext
202		}
203
204		/**
205	<	* take blocks interruptibly when empty
277	<	*/
278	<	public void testTakeFromEmpty() throws InterruptedException {
279	<	final LinkedTransferQueue q = new LinkedTransferQueue();
280	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
281	<	public void realRun() throws InterruptedException {
282	<	q.take();
283	<	}});
284	<	Thread.sleep(SHORT_DELAY_MS);
285	<	t.interrupt();
286	<	t.join();
287	<	}
288	<
289	<	/**
290	<	* Take removes existing elements until empty, then blocks interruptibly
205	>	* take removes existing elements until empty, then blocks interruptibly
206		*/
207		public void testBlockingTake() throws InterruptedException {
208	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
209	<	Thread t = new Thread(new CheckedRunnable() {
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	+
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	<	t.start();
232	<	Thread.sleep(SHORT_DELAY_MS);
231	>	await(pleaseInterrupt);
232	>	assertThreadStaysAlive(t);
233		t.interrupt();
234	<	t.join();
309	<	checkEmpty(q);
234	>	awaitTermination(t);
235		}
236
237		/**
#	Line 322 | Line 247 | public class LinkedTransferQueueTest ext
247		}
248
249		/**
250	<	* timed pool with zero timeout succeeds when non-empty, else times out
250	>	* timed poll with zero timeout succeeds when non-empty, else times out
251		*/
252		public void testTimedPoll0() throws InterruptedException {
253		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
#	Line 334 | Line 259 | public class LinkedTransferQueueTest ext
259		}
260
261		/**
262	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
262	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
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();
267	>	long startTime = System.nanoTime();
268		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
269	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
345	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
269	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
270		}
271	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
271	>	long startTime = System.nanoTime();
272	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
273	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
274		checkEmpty(q);
275		}
276
#	Line 353 | Line 279 | public class LinkedTransferQueueTest ext
279		* returning timeout status
280		*/
281		public void testInterruptedTimedPoll() throws InterruptedException {
282	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
282	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
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();
288		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
289	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
363	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
289	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
290		}
291	+	long t0 = System.nanoTime();
292	+	aboutToWait.countDown();
293		try {
294	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
294	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
295		shouldThrow();
296	<	} catch (InterruptedException success) {}
296	>	} catch (InterruptedException success) {
297	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
298	>	}
299		}});
300
301	<	Thread.sleep(SMALL_DELAY_MS);
301	>	aboutToWait.await();
302	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
303		t.interrupt();
304	<	t.join();
304	>	awaitTermination(t, MEDIUM_DELAY_MS);
305	>	checkEmpty(q);
306	>	}
307	>
308	>	/**
309	>	* timed poll after thread interrupted throws InterruptedException
310	>	* instead of returning timeout status
311	>	*/
312	>	public void testTimedPollAfterInterrupt() throws InterruptedException {
313	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
314	>	Thread t = newStartedThread(new CheckedRunnable() {
315	>	public void realRun() throws InterruptedException {
316	>	Thread.currentThread().interrupt();
317	>	for (int i = 0; i < SIZE; ++i) {
318	>	long t0 = System.nanoTime();
319	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
320	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
321	>	}
322	>	try {
323	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
324	>	shouldThrow();
325	>	} catch (InterruptedException success) {}
326	>	}});
327	>
328	>	awaitTermination(t, MEDIUM_DELAY_MS);
329		checkEmpty(q);
330		}
331
#	Line 421 | Line 376 | public class LinkedTransferQueueTest ext
376		}
377
378		/**
424	–	* remove(x) removes x and returns true if present
425	–	*/
426	–	public void testRemoveElement() throws InterruptedException {
427	–	LinkedTransferQueue q = populatedQueue(SIZE);
428	–	for (int i = 1; i < SIZE; i += 2) {
429	–	assertTrue(q.remove(i));
430	–	}
431	–	for (int i = 0; i < SIZE; i += 2) {
432	–	assertTrue(q.remove(i));
433	–	assertFalse(q.remove(i + 1));
434	–	}
435	–	checkEmpty(q);
436	–	}
437	–
438	–	/**
379		* An add following remove(x) succeeds
380		*/
381		public void testRemoveElementAndAdd() throws InterruptedException {
#	Line 527 | Line 467 | public class LinkedTransferQueueTest ext
467		}
468
469		/**
470	<	* toArray() contains all elements
470	>	* toArray() contains all elements in FIFO order
471		*/
472	<	public void testToArray() throws InterruptedException {
472	>	public void testToArray() {
473		LinkedTransferQueue q = populatedQueue(SIZE);
474		Object[] o = q.toArray();
475		for (int i = 0; i < o.length; i++) {
476	<	assertEquals(o[i], q.take());
476	>	assertSame(o[i], q.poll());
477		}
478		}
479
480		/**
481	<	* toArray(a) contains all elements
481	>	* toArray(a) contains all elements in FIFO order
482		*/
483	<	public void testToArray2() throws InterruptedException {
483	>	public void testToArray2() {
484		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
485		Integer[] ints = new Integer[SIZE];
486	<	ints = q.toArray(ints);
486	>	Integer[] array = q.toArray(ints);
487	>	assertSame(ints, array);
488		for (int i = 0; i < ints.length; i++) {
489	<	assertEquals(ints[i], q.take());
489	>	assertSame(ints[i], q.poll());
490		}
491		}
492
493		/**
494	<	* toArray(null) throws NullPointerException
554	<	*/
555	<	public void testToArray_BadArg() {
556	<	LinkedTransferQueue q = populatedQueue(SIZE);
557	<	try {
558	<	Object o[] = q.toArray(null);
559	<	shouldThrow();
560	<	} catch (NullPointerException success) {}
561	<	}
562	<
563	<	/**
564	<	* toArray(incompatible array type) throws CCE
494	>	* toArray(incompatible array type) throws ArrayStoreException
495		*/
496		public void testToArray1_BadArg() {
497		LinkedTransferQueue q = populatedQueue(SIZE);
498		try {
499	<	Object o[] = q.toArray(new String[10]);
499	>	q.toArray(new String[10]);
500		shouldThrow();
501		} catch (ArrayStoreException success) {}
502		}
#	Line 577 | Line 507 | public class LinkedTransferQueueTest ext
507		public void testIterator() throws InterruptedException {
508		LinkedTransferQueue q = populatedQueue(SIZE);
509		Iterator it = q.iterator();
510	<	int i = 0;
511	<	while (it.hasNext()) {
512	<	assertEquals(it.next(), i++);
583	<	}
510	>	int i;
511	>	for (i = 0; it.hasNext(); i++)
512	>	assertTrue(q.contains(it.next()));
513		assertEquals(i, SIZE);
514	+	assertIteratorExhausted(it);
515	+
516	+	it = q.iterator();
517	+	for (i = 0; it.hasNext(); i++)
518	+	assertEquals(it.next(), q.take());
519	+	assertEquals(i, SIZE);
520	+	assertIteratorExhausted(it);
521	+	}
522	+
523	+	/**
524	+	* iterator of empty collection has no elements
525	+	*/
526	+	public void testEmptyIterator() {
527	+	assertIteratorExhausted(new LinkedTransferQueue().iterator());
528		}
529
530		/**
#	Line 643 | Line 586 | public class LinkedTransferQueueTest ext
586		LinkedTransferQueue q = populatedQueue(SIZE);
587		String s = q.toString();
588		for (int i = 0; i < SIZE; ++i) {
589	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
589	>	assertTrue(s.contains(String.valueOf(i)));
590		}
591		}
592
#	Line 652 | Line 595 | public class LinkedTransferQueueTest ext
595		*/
596		public void testOfferInExecutor() {
597		final LinkedTransferQueue q = new LinkedTransferQueue();
598	<	q.add(one);
599	<	q.add(two);
600	<	ExecutorService executor = Executors.newFixedThreadPool(2);
658	<
659	<	executor.execute(new CheckedRunnable() {
660	<	public void realRun() {
661	<	assertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS));
662	<	}});
598	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
599	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
600	>	try (PoolCleaner cleaner = cleaner(executor)) {
601
602	<	executor.execute(new CheckedRunnable() {
603	<	public void realRun() throws InterruptedException {
604	<	Thread.sleep(SMALL_DELAY_MS);
605	<	assertSame(one, q.take());
606	<	}});
602	>	executor.execute(new CheckedRunnable() {
603	>	public void realRun() throws InterruptedException {
604	>	threadsStarted.await();
605	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
606	>	}});
607
608	<	joinPool(executor);
608	>	executor.execute(new CheckedRunnable() {
609	>	public void realRun() throws InterruptedException {
610	>	threadsStarted.await();
611	>	assertSame(one, q.take());
612	>	checkEmpty(q);
613	>	}});
614	>	}
615		}
616
617		/**
#	Line 675 | Line 619 | public class LinkedTransferQueueTest ext
619		*/
620		public void testPollInExecutor() {
621		final LinkedTransferQueue q = new LinkedTransferQueue();
622	<	ExecutorService executor = Executors.newFixedThreadPool(2);
623	<
624	<	executor.execute(new CheckedRunnable() {
681	<	public void realRun() throws InterruptedException {
682	<	assertNull(q.poll());
683	<	assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
684	<	assertTrue(q.isEmpty());
685	<	}});
622	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
623	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
624	>	try (PoolCleaner cleaner = cleaner(executor)) {
625
626	<	executor.execute(new CheckedRunnable() {
627	<	public void realRun() throws InterruptedException {
628	<	Thread.sleep(SMALL_DELAY_MS);
629	<	q.put(one);
630	<	}});
626	>	executor.execute(new CheckedRunnable() {
627	>	public void realRun() throws InterruptedException {
628	>	assertNull(q.poll());
629	>	threadsStarted.await();
630	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
631	>	checkEmpty(q);
632	>	}});
633
634	<	joinPool(executor);
634	>	executor.execute(new CheckedRunnable() {
635	>	public void realRun() throws InterruptedException {
636	>	threadsStarted.await();
637	>	q.put(one);
638	>	}});
639	>	}
640		}
641
642		/**
643		* A deserialized serialized queue has same elements in same order
644		*/
645		public void testSerialization() throws Exception {
646	<	LinkedTransferQueue q = populatedQueue(SIZE);
646	>	Queue x = populatedQueue(SIZE);
647	>	Queue y = serialClone(x);
648
649	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
650	<	ObjectOutputStream out
651	<	= new ObjectOutputStream(new BufferedOutputStream(bout));
652	<	out.writeObject(q);
653	<	out.close();
654	<
655	<	ByteArrayInputStream bin
709	<	= new ByteArrayInputStream(bout.toByteArray());
710	<	ObjectInputStream in
711	<	= new ObjectInputStream(new BufferedInputStream(bin));
712	<	LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
713	<
714	<	assertEquals(q.size(), r.size());
715	<	while (!q.isEmpty()) {
716	<	assertEquals(q.remove(), r.remove());
649	>	assertNotSame(y, x);
650	>	assertEquals(x.size(), y.size());
651	>	assertEquals(x.toString(), y.toString());
652	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
653	>	while (!x.isEmpty()) {
654	>	assertFalse(y.isEmpty());
655	>	assertEquals(x.remove(), y.remove());
656		}
657	<	}
719	<
720	<	/**
721	<	* drainTo(null) throws NullPointerException
722	<	*/
723	<	public void testDrainToNull() {
724	<	LinkedTransferQueue q = populatedQueue(SIZE);
725	<	try {
726	<	q.drainTo(null);
727	<	shouldThrow();
728	<	} catch (NullPointerException success) {}
729	<	}
730	<
731	<	/**
732	<	* drainTo(this) throws IllegalArgumentException
733	<	*/
734	<	public void testDrainToSelf() {
735	<	LinkedTransferQueue q = populatedQueue(SIZE);
736	<	try {
737	<	q.drainTo(q);
738	<	shouldThrow();
739	<	} catch (IllegalArgumentException success) {}
657	>	assertTrue(y.isEmpty());
658		}
659
660		/**
#	Line 746 | Line 664 | public class LinkedTransferQueueTest ext
664		LinkedTransferQueue q = populatedQueue(SIZE);
665		ArrayList l = new ArrayList();
666		q.drainTo(l);
667	<	assertEquals(q.size(), 0);
668	<	assertEquals(l.size(), SIZE);
667	>	assertEquals(0, q.size());
668	>	assertEquals(SIZE, l.size());
669		for (int i = 0; i < SIZE; ++i) {
670	<	assertEquals(l.get(i), i);
670	>	assertEquals(i, l.get(i));
671		}
672		q.add(zero);
673		q.add(one);
#	Line 758 | Line 676 | public class LinkedTransferQueueTest ext
676		assertTrue(q.contains(one));
677		l.clear();
678		q.drainTo(l);
679	<	assertEquals(q.size(), 0);
680	<	assertEquals(l.size(), 2);
679	>	assertEquals(0, q.size());
680	>	assertEquals(2, l.size());
681		for (int i = 0; i < 2; ++i) {
682	<	assertEquals(l.get(i), i);
682	>	assertEquals(i, l.get(i));
683		}
684		}
685
#	Line 777 | Line 695 | public class LinkedTransferQueueTest ext
695		ArrayList l = new ArrayList();
696		q.drainTo(l);
697		assertTrue(l.size() >= SIZE);
698	<	for (int i = 0; i < SIZE; ++i) {
699	<	assertEquals(l.get(i), i);
700	<	}
783	<	t.join();
698	>	for (int i = 0; i < SIZE; ++i)
699	>	assertEquals(i, l.get(i));
700	>	awaitTermination(t, MEDIUM_DELAY_MS);
701		assertTrue(q.size() + l.size() >= SIZE);
702		}
703
704		/**
788	–	* drainTo(null, n) throws NullPointerException
789	–	*/
790	–	public void testDrainToNullN() {
791	–	LinkedTransferQueue q = populatedQueue(SIZE);
792	–	try {
793	–	q.drainTo(null, SIZE);
794	–	shouldThrow();
795	–	} catch (NullPointerException success) {}
796	–	}
797	–
798	–	/**
799	–	* drainTo(this, n) throws IllegalArgumentException
800	–	*/
801	–	public void testDrainToSelfN() {
802	–	LinkedTransferQueue q = populatedQueue(SIZE);
803	–	try {
804	–	q.drainTo(q, SIZE);
805	–	shouldThrow();
806	–	} catch (IllegalArgumentException success) {}
807	–	}
808	–
809	–	/**
705		* drainTo(c, n) empties first min(n, size) elements of queue into c
706		*/
707		public void testDrainToN() {
#	Line 818 | Line 713 | public class LinkedTransferQueueTest ext
713		ArrayList l = new ArrayList();
714		q.drainTo(l, i);
715		int k = (i < SIZE) ? i : SIZE;
716	<	assertEquals(l.size(), k);
717	<	assertEquals(q.size(), SIZE - k);
718	<	for (int j = 0; j < k; ++j) {
719	<	assertEquals(l.get(j), j);
720	<	}
826	<	while (q.poll() != null)
827	<	;
716	>	assertEquals(k, l.size());
717	>	assertEquals(SIZE - k, q.size());
718	>	for (int j = 0; j < k; ++j)
719	>	assertEquals(j, l.get(j));
720	>	do {} while (q.poll() != null);
721		}
722		}
723
#	Line 834 | Line 727 | public class LinkedTransferQueueTest ext
727		*/
728		public void testWaitingConsumer() throws InterruptedException {
729		final LinkedTransferQueue q = new LinkedTransferQueue();
730	<	assertEquals(q.getWaitingConsumerCount(), 0);
730	>	assertEquals(0, q.getWaitingConsumerCount());
731		assertFalse(q.hasWaitingConsumer());
732	+	final CountDownLatch threadStarted = new CountDownLatch(1);
733
734		Thread t = newStartedThread(new CheckedRunnable() {
735		public void realRun() throws InterruptedException {
736	<	Thread.sleep(SMALL_DELAY_MS);
737	<	assertTrue(q.hasWaitingConsumer());
738	<	assertEquals(q.getWaitingConsumerCount(), 1);
845	<	assertTrue(q.offer(one));
736	>	threadStarted.countDown();
737	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
738	>	assertEquals(0, q.getWaitingConsumerCount());
739		assertFalse(q.hasWaitingConsumer());
847	–	assertEquals(q.getWaitingConsumerCount(), 0);
740		}});
741
742	<	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
743	<	assertEquals(q.getWaitingConsumerCount(), 0);
742	>	threadStarted.await();
743	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
744	>	assertEquals(1, q.getWaitingConsumerCount());
745	>	assertTrue(q.hasWaitingConsumer());
746	>
747	>	assertTrue(q.offer(one));
748	>	assertEquals(0, q.getWaitingConsumerCount());
749		assertFalse(q.hasWaitingConsumer());
750	<	t.join();
750	>
751	>	awaitTermination(t, MEDIUM_DELAY_MS);
752		}
753
754		/**
#	Line 871 | Line 769 | public class LinkedTransferQueueTest ext
769		public void testTransfer2() throws InterruptedException {
770		final LinkedTransferQueue<Integer> q
771		= new LinkedTransferQueue<Integer>();
772	+	final CountDownLatch threadStarted = new CountDownLatch(1);
773
774		Thread t = newStartedThread(new CheckedRunnable() {
775		public void realRun() throws InterruptedException {
776	<	q.transfer(SIZE);
777	<	assertTrue(q.isEmpty());
776	>	threadStarted.countDown();
777	>	q.transfer(five);
778	>	checkEmpty(q);
779		}});
780
781	<	Thread.sleep(SHORT_DELAY_MS);
781	>	threadStarted.await();
782	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
783		assertEquals(1, q.size());
784	<	assertEquals(SIZE, (int) q.poll());
785	<	assertTrue(q.isEmpty());
786	<	t.join();
784	>	assertSame(five, q.poll());
785	>	checkEmpty(q);
786	>	awaitTermination(t, MEDIUM_DELAY_MS);
787		}
788
789		/**
#	Line 894 | Line 795 | public class LinkedTransferQueueTest ext
795
796		Thread first = newStartedThread(new CheckedRunnable() {
797		public void realRun() throws InterruptedException {
798	<	Integer i = SIZE + 1;
799	<	q.transfer(i);
899	<	assertTrue(!q.contains(i));
798	>	q.transfer(four);
799	>	assertTrue(!q.contains(four));
800		assertEquals(1, q.size());
801		}});
802
803		Thread interruptedThread = newStartedThread(
804		new CheckedInterruptedRunnable() {
805		public void realRun() throws InterruptedException {
806	<	while (q.size() == 0)
806	>	while (q.isEmpty())
807		Thread.yield();
808	<	q.transfer(SIZE);
808	>	q.transfer(five);
809		}});
810
811		while (q.size() < 2)
812		Thread.yield();
813		assertEquals(2, q.size());
814	<	assertEquals(SIZE + 1, (int) q.poll());
814	>	assertSame(four, q.poll());
815		first.join();
816		assertEquals(1, q.size());
817		interruptedThread.interrupt();
818		interruptedThread.join();
819	<	assertEquals(0, q.size());
920	<	assertTrue(q.isEmpty());
819	>	checkEmpty(q);
820		}
821
822		/**
#	Line 934 | Line 833 | public class LinkedTransferQueueTest ext
833		assertSame(three, q.poll());
834		}});
835
836	<	Thread.sleep(SHORT_DELAY_MS);
836	>	while (q.isEmpty())
837	>	Thread.yield();
838	>	assertFalse(q.isEmpty());
839	>	assertEquals(1, q.size());
840		assertTrue(q.offer(three));
841		assertSame(four, q.poll());
842	<	t.join();
842	>	awaitTermination(t, MEDIUM_DELAY_MS);
843		}
844
845		/**
#	Line 950 | Line 852 | public class LinkedTransferQueueTest ext
852
853		Thread t = newStartedThread(new CheckedRunnable() {
854		public void realRun() throws InterruptedException {
855	<	q.transfer(SIZE);
855	>	q.transfer(four);
856		checkEmpty(q);
857		}});
858
859	<	Thread.sleep(SHORT_DELAY_MS);
860	<	assertEquals(SIZE, (int) q.take());
859	>	while (q.isEmpty())
860	>	Thread.yield();
861	>	assertFalse(q.isEmpty());
862	>	assertEquals(1, q.size());
863	>	assertSame(four, q.take());
864		checkEmpty(q);
865	<	t.join();
865	>	awaitTermination(t, MEDIUM_DELAY_MS);
866		}
867
868		/**
869		* tryTransfer(null) throws NullPointerException
870		*/
871		public void testTryTransfer1() {
872	+	final LinkedTransferQueue q = new LinkedTransferQueue();
873		try {
968	–	final LinkedTransferQueue q = new LinkedTransferQueue();
874		q.tryTransfer(null);
875		shouldThrow();
876		} catch (NullPointerException success) {}
#	Line 995 | Line 900 | public class LinkedTransferQueueTest ext
900		while (! q.hasWaitingConsumer())
901		Thread.yield();
902		assertTrue(q.hasWaitingConsumer());
903	<	assertTrue(q.isEmpty());
999	<	assertEquals(q.size(), 0);
903	>	checkEmpty(q);
904		assertTrue(q.tryTransfer(hotPotato));
905		}});
906
907		assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
908		checkEmpty(q);
909	<	t.join();
909	>	awaitTermination(t, MEDIUM_DELAY_MS);
910		}
911
912		/**
#	Line 1018 | Line 922 | public class LinkedTransferQueueTest ext
922		while (! q.hasWaitingConsumer())
923		Thread.yield();
924		assertTrue(q.hasWaitingConsumer());
925	<	assertTrue(q.isEmpty());
1022	<	assertEquals(q.size(), 0);
925	>	checkEmpty(q);
926		assertTrue(q.tryTransfer(hotPotato));
927		}});
928
929		assertSame(q.take(), hotPotato);
930		checkEmpty(q);
931	<	t.join();
931	>	awaitTermination(t, MEDIUM_DELAY_MS);
932		}
933
934		/**
935	<	* tryTransfer waits the amount given if interrupted, and
1033	<	* throws interrupted exception
935	>	* tryTransfer blocks interruptibly if no takers
936		*/
937		public void testTryTransfer5() throws InterruptedException {
938		final LinkedTransferQueue q = new LinkedTransferQueue();
939	+	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
940	+	assertTrue(q.isEmpty());
941
942	<	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
942	>	Thread t = newStartedThread(new CheckedRunnable() {
943		public void realRun() throws InterruptedException {
944	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
944	>	Thread.currentThread().interrupt();
945	>	try {
946	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
947	>	shouldThrow();
948	>	} catch (InterruptedException success) {}
949	>	assertFalse(Thread.interrupted());
950	>
951	>	pleaseInterrupt.countDown();
952	>	try {
953	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
954	>	shouldThrow();
955	>	} catch (InterruptedException success) {}
956	>	assertFalse(Thread.interrupted());
957		}});
958
959	<	Thread.sleep(SMALL_DELAY_MS);
960	<	toInterrupt.interrupt();
961	<	toInterrupt.join();
959	>	await(pleaseInterrupt);
960	>	assertThreadStaysAlive(t);
961	>	t.interrupt();
962	>	awaitTermination(t);
963	>	checkEmpty(q);
964		}
965
966		/**
967	<	* tryTransfer gives up after the timeout and return false
967	>	* tryTransfer gives up after the timeout and returns false
968		*/
969		public void testTryTransfer6() throws InterruptedException {
970		final LinkedTransferQueue q = new LinkedTransferQueue();
971
972		Thread t = newStartedThread(new CheckedRunnable() {
973		public void realRun() throws InterruptedException {
974	+	long t0 = System.nanoTime();
975		assertFalse(q.tryTransfer(new Object(),
976	<	SHORT_DELAY_MS, MILLISECONDS));
976	>	timeoutMillis(), MILLISECONDS));
977	>	assertTrue(millisElapsedSince(t0) >= timeoutMillis());
978	>	checkEmpty(q);
979		}});
980
981	<	Thread.sleep(SMALL_DELAY_MS);
981	>	awaitTermination(t);
982		checkEmpty(q);
1062	–	t.join();
983		}
984
985		/**
#	Line 1073 | Line 993 | public class LinkedTransferQueueTest ext
993		Thread t = newStartedThread(new CheckedRunnable() {
994		public void realRun() throws InterruptedException {
995		assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
996	<	assertTrue(q.isEmpty());
996	>	checkEmpty(q);
997		}});
998
999	<	Thread.sleep(SHORT_DELAY_MS);
999	>	while (q.size() != 2)
1000	>	Thread.yield();
1001		assertEquals(2, q.size());
1002		assertSame(four, q.poll());
1003		assertSame(five, q.poll());
1004		checkEmpty(q);
1005	<	t.join();
1005	>	awaitTermination(t, MEDIUM_DELAY_MS);
1006		}
1007
1008		/**
1009	<	* tryTransfer attempts to enqueue into the q and fails returning
1010	<	* false not enqueueing and the successive poll is null
1009	>	* tryTransfer attempts to enqueue into the queue and fails
1010	>	* returning false not enqueueing and the successive poll is null
1011		*/
1012		public void testTryTransfer8() throws InterruptedException {
1013		final LinkedTransferQueue q = new LinkedTransferQueue();
1014		assertTrue(q.offer(four));
1015		assertEquals(1, q.size());
1016	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1016	>	long t0 = System.nanoTime();
1017	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
1018	>	assertTrue(millisElapsedSince(t0) >= timeoutMillis());
1019		assertEquals(1, q.size());
1020		assertSame(four, q.poll());
1021		assertNull(q.poll());
#	Line 1101 | Line 1024 | public class LinkedTransferQueueTest ext
1024
1025		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1026		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1027	<	assertTrue(q.isEmpty());
1027	>	checkEmpty(q);
1028		for (int i = 0; i < n; i++) {
1029		assertEquals(i, q.size());
1030		assertTrue(q.offer(i));
#	Line 1110 | Line 1033 | public class LinkedTransferQueueTest ext
1033		assertFalse(q.isEmpty());
1034		return q;
1035		}
1036	+
1037	+	/**
1038	+	* remove(null), contains(null) always return false
1039	+	*/
1040	+	public void testNeverContainsNull() {
1041	+	Collection<?>[] qs = {
1042	+	new LinkedTransferQueue<Object>(),
1043	+	populatedQueue(2),
1044	+	};
1045	+
1046	+	for (Collection<?> q : qs) {
1047	+	assertFalse(q.contains(null));
1048	+	assertFalse(q.remove(null));
1049	+	}
1050	+	}
1051		}

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