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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.30 by jsr166, Thu Oct 28 22:20:47 2010 UTC vs.
Revision 1.60 by jsr166, Fri May 15 18:21:19 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;
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 {
#	Line 32 | Line 32 | public class LinkedTransferQueueTest ext
32		}
33
34		public static void main(String[] args) {
35	<	junit.textui.TestRunner.run(suite());
35	>	main(suite(), args);
36		}
37
38		public static Test suite() {
#	Line 40 | Line 40 | public class LinkedTransferQueueTest ext
40		new Generic().testSuite());
41		}
42
43	–	void checkEmpty(LinkedTransferQueue q) throws InterruptedException {
44	–	assertTrue(q.isEmpty());
45	–	assertEquals(0, q.size());
46	–	assertNull(q.peek());
47	–	assertNull(q.poll());
48	–	assertNull(q.poll(0, MILLISECONDS));
49	–	assertEquals(q.toString(), "[]");
50	–	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
51	–	assertFalse(q.iterator().hasNext());
52	–	try {
53	–	q.element();
54	–	shouldThrow();
55	–	} catch (NoSuchElementException success) {}
56	–	try {
57	–	q.iterator().next();
58	–	shouldThrow();
59	–	} catch (NoSuchElementException success) {}
60	–	try {
61	–	q.remove();
62	–	shouldThrow();
63	–	} catch (NoSuchElementException success) {}
64	–	}
65	–
43		/**
44		* Constructor builds new queue with size being zero and empty
45		* being true
#	Line 88 | Line 65 | public class LinkedTransferQueueTest ext
65		* NullPointerException
66		*/
67		public void testConstructor3() {
68	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
69		try {
70	<	Integer[] ints = new Integer[SIZE];
93	<	new LinkedTransferQueue(Arrays.asList(ints));
70	>	new LinkedTransferQueue(elements);
71		shouldThrow();
72		} catch (NullPointerException success) {}
73		}
#	Line 100 | Line 77 | public class LinkedTransferQueueTest ext
77		* throws NullPointerException
78		*/
79		public void testConstructor4() {
80	+	Integer[] ints = new Integer[SIZE];
81	+	for (int i = 0; i < SIZE-1; ++i)
82	+	ints[i] = i;
83	+	Collection<Integer> elements = Arrays.asList(ints);
84		try {
85	<	Integer[] ints = new Integer[SIZE];
105	<	for (int i = 0; i < SIZE - 1; ++i) {
106	<	ints[i] = i;
107	<	}
108	<	new LinkedTransferQueue(Arrays.asList(ints));
85	>	new LinkedTransferQueue(elements);
86		shouldThrow();
87		} catch (NullPointerException success) {}
88		}
#	Line 138 | Line 115 | public class LinkedTransferQueueTest ext
115		* remainingCapacity() always returns Integer.MAX_VALUE
116		*/
117		public void testRemainingCapacity() {
118	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
118	>	BlockingQueue q = populatedQueue(SIZE);
119		for (int i = 0; i < SIZE; ++i) {
120		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
121		assertEquals(SIZE - i, q.size());
122	<	q.remove();
122	>	assertEquals(i, q.remove());
123		}
124		for (int i = 0; i < SIZE; ++i) {
125		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
126		assertEquals(i, q.size());
127	<	q.add(i);
127	>	assertTrue(q.add(i));
128		}
129		}
130
131		/**
155	–	* offer(null) throws NullPointerException
156	–	*/
157	–	public void testOfferNull() {
158	–	try {
159	–	LinkedTransferQueue q = new LinkedTransferQueue();
160	–	q.offer(null);
161	–	shouldThrow();
162	–	} catch (NullPointerException success) {}
163	–	}
164	–
165	–	/**
166	–	* add(null) throws NullPointerException
167	–	*/
168	–	public void testAddNull() {
169	–	try {
170	–	LinkedTransferQueue q = new LinkedTransferQueue();
171	–	q.add(null);
172	–	shouldThrow();
173	–	} catch (NullPointerException success) {}
174	–	}
175	–
176	–	/**
177	–	* addAll(null) throws NullPointerException
178	–	*/
179	–	public void testAddAll1() {
180	–	try {
181	–	LinkedTransferQueue q = new LinkedTransferQueue();
182	–	q.addAll(null);
183	–	shouldThrow();
184	–	} catch (NullPointerException success) {}
185	–	}
186	–
187	–	/**
132		* addAll(this) throws IllegalArgumentException
133		*/
134		public void testAddAllSelf() {
135	+	LinkedTransferQueue q = populatedQueue(SIZE);
136		try {
192	–	LinkedTransferQueue q = populatedQueue(SIZE);
137		q.addAll(q);
138		shouldThrow();
139		} catch (IllegalArgumentException success) {}
140		}
141
142		/**
199	–	* addAll of a collection with null elements throws NullPointerException
200	–	*/
201	–	public void testAddAll2() {
202	–	try {
203	–	LinkedTransferQueue q = new LinkedTransferQueue();
204	–	Integer[] ints = new Integer[SIZE];
205	–	q.addAll(Arrays.asList(ints));
206	–	shouldThrow();
207	–	} catch (NullPointerException success) {}
208	–	}
209	–
210	–	/**
143		* addAll of a collection with any null elements throws
144		* NullPointerException after possibly adding some elements
145		*/
146		public void testAddAll3() {
147	+	LinkedTransferQueue q = new LinkedTransferQueue();
148	+	Integer[] ints = new Integer[SIZE];
149	+	for (int i = 0; i < SIZE - 1; ++i)
150	+	ints[i] = i;
151		try {
216	–	LinkedTransferQueue q = new LinkedTransferQueue();
217	–	Integer[] ints = new Integer[SIZE];
218	–	for (int i = 0; i < SIZE - 1; ++i) {
219	–	ints[i] = i;
220	–	}
152		q.addAll(Arrays.asList(ints));
153		shouldThrow();
154		} catch (NullPointerException success) {}
#	Line 241 | Line 172 | public class LinkedTransferQueueTest ext
172		}
173
174		/**
244	–	* put(null) throws NullPointerException
245	–	*/
246	–	public void testPutNull() throws InterruptedException {
247	–	try {
248	–	LinkedTransferQueue q = new LinkedTransferQueue();
249	–	q.put(null);
250	–	shouldThrow();
251	–	} catch (NullPointerException success) {}
252	–	}
253	–
254	–	/**
175		* all elements successfully put are contained
176		*/
177		public void testPut() {
178		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
179		for (int i = 0; i < SIZE; ++i) {
180	<	assertEquals(q.size(), i);
180	>	assertEquals(i, q.size());
181		q.put(i);
182		assertTrue(q.contains(i));
183		}
#	Line 277 | Line 197 | public class LinkedTransferQueueTest ext
197		* take removes existing elements until empty, then blocks interruptibly
198		*/
199		public void testBlockingTake() throws InterruptedException {
200	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
201	<	Thread t = new Thread(new CheckedRunnable() {
200	>	final BlockingQueue q = populatedQueue(SIZE);
201	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
202	>	Thread t = newStartedThread(new CheckedRunnable() {
203		public void realRun() throws InterruptedException {
204		for (int i = 0; i < SIZE; ++i) {
205	<	assertEquals(i, (int) q.take());
205	>	assertEquals(i, q.take());
206		}
207	+
208	+	Thread.currentThread().interrupt();
209		try {
210		q.take();
211		shouldThrow();
212		} catch (InterruptedException success) {}
213	+	assertFalse(Thread.interrupted());
214	+
215	+	pleaseInterrupt.countDown();
216	+	try {
217	+	q.take();
218	+	shouldThrow();
219	+	} catch (InterruptedException success) {}
220	+	assertFalse(Thread.interrupted());
221		}});
222
223	<	t.start();
224	<	Thread.sleep(SHORT_DELAY_MS);
223	>	await(pleaseInterrupt);
224	>	assertThreadStaysAlive(t);
225		t.interrupt();
226	<	awaitTermination(t, MEDIUM_DELAY_MS);
296	<	checkEmpty(q);
226	>	awaitTermination(t);
227		}
228
229		/**
#	Line 326 | Line 256 | public class LinkedTransferQueueTest ext
256		public void testTimedPoll() throws InterruptedException {
257		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
258		for (int i = 0; i < SIZE; ++i) {
259	<	long t0 = System.nanoTime();
259	>	long startTime = System.nanoTime();
260		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
261	<	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
261	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
262		}
263	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
263	>	long startTime = System.nanoTime();
264	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
265	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
266		checkEmpty(q);
267		}
268
#	Line 339 | Line 271 | public class LinkedTransferQueueTest ext
271		* returning timeout status
272		*/
273		public void testInterruptedTimedPoll() throws InterruptedException {
274	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
274	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
275	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
276		Thread t = newStartedThread(new CheckedRunnable() {
277		public void realRun() throws InterruptedException {
278		for (int i = 0; i < SIZE; ++i) {
#	Line 347 | Line 280 | public class LinkedTransferQueueTest ext
280		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
281		assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
282		}
283	+	long t0 = System.nanoTime();
284	+	aboutToWait.countDown();
285		try {
286	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
286	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
287		shouldThrow();
288	<	} catch (InterruptedException success) {}
288	>	} catch (InterruptedException success) {
289	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
290	>	}
291		}});
292
293	<	Thread.sleep(SMALL_DELAY_MS);
293	>	aboutToWait.await();
294	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
295		t.interrupt();
296		awaitTermination(t, MEDIUM_DELAY_MS);
297		checkEmpty(q);
298		}
299
300		/**
301	+	* timed poll after thread interrupted throws InterruptedException
302	+	* instead of returning timeout status
303	+	*/
304	+	public void testTimedPollAfterInterrupt() throws InterruptedException {
305	+	final BlockingQueue<Integer> q = populatedQueue(SIZE);
306	+	Thread t = newStartedThread(new CheckedRunnable() {
307	+	public void realRun() throws InterruptedException {
308	+	Thread.currentThread().interrupt();
309	+	for (int i = 0; i < SIZE; ++i) {
310	+	long t0 = System.nanoTime();
311	+	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
312	+	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
313	+	}
314	+	try {
315	+	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
316	+	shouldThrow();
317	+	} catch (InterruptedException success) {}
318	+	}});
319	+
320	+	awaitTermination(t, MEDIUM_DELAY_MS);
321	+	checkEmpty(q);
322	+	}
323	+
324	+	/**
325		* peek returns next element, or null if empty
326		*/
327		public void testPeek() throws InterruptedException {
#	Line 406 | Line 368 | public class LinkedTransferQueueTest ext
368		}
369
370		/**
409	–	* remove(x) removes x and returns true if present
410	–	*/
411	–	public void testRemoveElement() throws InterruptedException {
412	–	LinkedTransferQueue q = populatedQueue(SIZE);
413	–	for (int i = 1; i < SIZE; i += 2) {
414	–	assertTrue(q.remove(i));
415	–	}
416	–	for (int i = 0; i < SIZE; i += 2) {
417	–	assertTrue(q.remove(i));
418	–	assertFalse(q.remove(i + 1));
419	–	}
420	–	checkEmpty(q);
421	–	}
422	–
423	–	/**
371		* An add following remove(x) succeeds
372		*/
373		public void testRemoveElementAndAdd() throws InterruptedException {
#	Line 512 | Line 459 | public class LinkedTransferQueueTest ext
459		}
460
461		/**
462	<	* toArray() contains all elements
462	>	* toArray() contains all elements in FIFO order
463		*/
464	<	public void testToArray() throws InterruptedException {
464	>	public void testToArray() {
465		LinkedTransferQueue q = populatedQueue(SIZE);
466		Object[] o = q.toArray();
467		for (int i = 0; i < o.length; i++) {
468	<	assertEquals(o[i], q.take());
468	>	assertSame(o[i], q.poll());
469		}
470		}
471
472		/**
473	<	* toArray(a) contains all elements
473	>	* toArray(a) contains all elements in FIFO order
474		*/
475	<	public void testToArray2() throws InterruptedException {
475	>	public void testToArray2() {
476		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
477		Integer[] ints = new Integer[SIZE];
478	<	ints = q.toArray(ints);
478	>	Integer[] array = q.toArray(ints);
479	>	assertSame(ints, array);
480		for (int i = 0; i < ints.length; i++) {
481	<	assertEquals(ints[i], q.take());
481	>	assertSame(ints[i], q.poll());
482		}
483		}
484
485		/**
486	<	* toArray(null) throws NullPointerException
539	<	*/
540	<	public void testToArray_BadArg() {
541	<	LinkedTransferQueue q = populatedQueue(SIZE);
542	<	try {
543	<	Object o[] = q.toArray(null);
544	<	shouldThrow();
545	<	} catch (NullPointerException success) {}
546	<	}
547	<
548	<	/**
549	<	* toArray(incompatible array type) throws CCE
486	>	* toArray(incompatible array type) throws ArrayStoreException
487		*/
488		public void testToArray1_BadArg() {
489		LinkedTransferQueue q = populatedQueue(SIZE);
490		try {
491	<	Object o[] = q.toArray(new String[10]);
491	>	q.toArray(new String[10]);
492		shouldThrow();
493		} catch (ArrayStoreException success) {}
494		}
#	Line 562 | Line 499 | public class LinkedTransferQueueTest ext
499		public void testIterator() throws InterruptedException {
500		LinkedTransferQueue q = populatedQueue(SIZE);
501		Iterator it = q.iterator();
502	<	int i = 0;
503	<	while (it.hasNext()) {
504	<	assertEquals(it.next(), i++);
505	<	}
502	>	int i;
503	>	for (i = 0; it.hasNext(); i++)
504	>	assertTrue(q.contains(it.next()));
505	>	assertEquals(i, SIZE);
506	>	assertIteratorExhausted(it);
507	>
508	>	it = q.iterator();
509	>	for (i = 0; it.hasNext(); i++)
510	>	assertEquals(it.next(), q.take());
511		assertEquals(i, SIZE);
512	+	assertIteratorExhausted(it);
513	+	}
514	+
515	+	/**
516	+	* iterator of empty collection has no elements
517	+	*/
518	+	public void testEmptyIterator() {
519	+	assertIteratorExhausted(new LinkedTransferQueue().iterator());
520		}
521
522		/**
#	Line 628 | Line 578 | public class LinkedTransferQueueTest ext
578		LinkedTransferQueue q = populatedQueue(SIZE);
579		String s = q.toString();
580		for (int i = 0; i < SIZE; ++i) {
581	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
581	>	assertTrue(s.contains(String.valueOf(i)));
582		}
583		}
584
#	Line 637 | Line 587 | public class LinkedTransferQueueTest ext
587		*/
588		public void testOfferInExecutor() {
589		final LinkedTransferQueue q = new LinkedTransferQueue();
590	<	q.add(one);
641	<	q.add(two);
590	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
591		ExecutorService executor = Executors.newFixedThreadPool(2);
592
593		executor.execute(new CheckedRunnable() {
594	<	public void realRun() {
595	<	assertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS));
594	>	public void realRun() throws InterruptedException {
595	>	threadsStarted.await();
596	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
597		}});
598
599		executor.execute(new CheckedRunnable() {
600		public void realRun() throws InterruptedException {
601	<	Thread.sleep(SMALL_DELAY_MS);
601	>	threadsStarted.await();
602		assertSame(one, q.take());
603	+	checkEmpty(q);
604		}});
605
606		joinPool(executor);
#	Line 660 | Line 611 | public class LinkedTransferQueueTest ext
611		*/
612		public void testPollInExecutor() {
613		final LinkedTransferQueue q = new LinkedTransferQueue();
614	+	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
615		ExecutorService executor = Executors.newFixedThreadPool(2);
616
617		executor.execute(new CheckedRunnable() {
618		public void realRun() throws InterruptedException {
619		assertNull(q.poll());
620	<	assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
621	<	assertTrue(q.isEmpty());
620	>	threadsStarted.await();
621	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
622	>	checkEmpty(q);
623		}});
624
625		executor.execute(new CheckedRunnable() {
626		public void realRun() throws InterruptedException {
627	<	Thread.sleep(SMALL_DELAY_MS);
627	>	threadsStarted.await();
628		q.put(one);
629		}});
630
#	Line 682 | Line 635 | public class LinkedTransferQueueTest ext
635		* A deserialized serialized queue has same elements in same order
636		*/
637		public void testSerialization() throws Exception {
638	<	LinkedTransferQueue q = populatedQueue(SIZE);
639	<
687	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
688	<	ObjectOutputStream out
689	<	= new ObjectOutputStream(new BufferedOutputStream(bout));
690	<	out.writeObject(q);
691	<	out.close();
692	<
693	<	ByteArrayInputStream bin
694	<	= new ByteArrayInputStream(bout.toByteArray());
695	<	ObjectInputStream in
696	<	= new ObjectInputStream(new BufferedInputStream(bin));
697	<	LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
638	>	Queue x = populatedQueue(SIZE);
639	>	Queue y = serialClone(x);
640
641	<	assertEquals(q.size(), r.size());
642	<	while (!q.isEmpty()) {
643	<	assertEquals(q.remove(), r.remove());
641	>	assertNotSame(y, x);
642	>	assertEquals(x.size(), y.size());
643	>	assertEquals(x.toString(), y.toString());
644	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
645	>	while (!x.isEmpty()) {
646	>	assertFalse(y.isEmpty());
647	>	assertEquals(x.remove(), y.remove());
648		}
649	<	}
704	<
705	<	/**
706	<	* drainTo(null) throws NullPointerException
707	<	*/
708	<	public void testDrainToNull() {
709	<	LinkedTransferQueue q = populatedQueue(SIZE);
710	<	try {
711	<	q.drainTo(null);
712	<	shouldThrow();
713	<	} catch (NullPointerException success) {}
714	<	}
715	<
716	<	/**
717	<	* drainTo(this) throws IllegalArgumentException
718	<	*/
719	<	public void testDrainToSelf() {
720	<	LinkedTransferQueue q = populatedQueue(SIZE);
721	<	try {
722	<	q.drainTo(q);
723	<	shouldThrow();
724	<	} catch (IllegalArgumentException success) {}
649	>	assertTrue(y.isEmpty());
650		}
651
652		/**
#	Line 731 | Line 656 | public class LinkedTransferQueueTest ext
656		LinkedTransferQueue q = populatedQueue(SIZE);
657		ArrayList l = new ArrayList();
658		q.drainTo(l);
659	<	assertEquals(q.size(), 0);
660	<	assertEquals(l.size(), SIZE);
659	>	assertEquals(0, q.size());
660	>	assertEquals(SIZE, l.size());
661		for (int i = 0; i < SIZE; ++i) {
662	<	assertEquals(l.get(i), i);
662	>	assertEquals(i, l.get(i));
663		}
664		q.add(zero);
665		q.add(one);
#	Line 743 | Line 668 | public class LinkedTransferQueueTest ext
668		assertTrue(q.contains(one));
669		l.clear();
670		q.drainTo(l);
671	<	assertEquals(q.size(), 0);
672	<	assertEquals(l.size(), 2);
671	>	assertEquals(0, q.size());
672	>	assertEquals(2, l.size());
673		for (int i = 0; i < 2; ++i) {
674	<	assertEquals(l.get(i), i);
674	>	assertEquals(i, l.get(i));
675		}
676		}
677
#	Line 762 | Line 687 | public class LinkedTransferQueueTest ext
687		ArrayList l = new ArrayList();
688		q.drainTo(l);
689		assertTrue(l.size() >= SIZE);
690	<	for (int i = 0; i < SIZE; ++i) {
691	<	assertEquals(l.get(i), i);
767	<	}
690	>	for (int i = 0; i < SIZE; ++i)
691	>	assertEquals(i, l.get(i));
692		awaitTermination(t, MEDIUM_DELAY_MS);
693		assertTrue(q.size() + l.size() >= SIZE);
694		}
695
696		/**
773	–	* drainTo(null, n) throws NullPointerException
774	–	*/
775	–	public void testDrainToNullN() {
776	–	LinkedTransferQueue q = populatedQueue(SIZE);
777	–	try {
778	–	q.drainTo(null, SIZE);
779	–	shouldThrow();
780	–	} catch (NullPointerException success) {}
781	–	}
782	–
783	–	/**
784	–	* drainTo(this, n) throws IllegalArgumentException
785	–	*/
786	–	public void testDrainToSelfN() {
787	–	LinkedTransferQueue q = populatedQueue(SIZE);
788	–	try {
789	–	q.drainTo(q, SIZE);
790	–	shouldThrow();
791	–	} catch (IllegalArgumentException success) {}
792	–	}
793	–
794	–	/**
697		* drainTo(c, n) empties first min(n, size) elements of queue into c
698		*/
699		public void testDrainToN() {
#	Line 803 | Line 705 | public class LinkedTransferQueueTest ext
705		ArrayList l = new ArrayList();
706		q.drainTo(l, i);
707		int k = (i < SIZE) ? i : SIZE;
708	<	assertEquals(l.size(), k);
709	<	assertEquals(q.size(), SIZE - k);
710	<	for (int j = 0; j < k; ++j) {
711	<	assertEquals(l.get(j), j);
712	<	}
811	<	while (q.poll() != null)
812	<	;
708	>	assertEquals(k, l.size());
709	>	assertEquals(SIZE - k, q.size());
710	>	for (int j = 0; j < k; ++j)
711	>	assertEquals(j, l.get(j));
712	>	do {} while (q.poll() != null);
713		}
714		}
715
#	Line 819 | Line 719 | public class LinkedTransferQueueTest ext
719		*/
720		public void testWaitingConsumer() throws InterruptedException {
721		final LinkedTransferQueue q = new LinkedTransferQueue();
722	<	assertEquals(q.getWaitingConsumerCount(), 0);
722	>	assertEquals(0, q.getWaitingConsumerCount());
723		assertFalse(q.hasWaitingConsumer());
724	+	final CountDownLatch threadStarted = new CountDownLatch(1);
725
726		Thread t = newStartedThread(new CheckedRunnable() {
727		public void realRun() throws InterruptedException {
728	<	Thread.sleep(SMALL_DELAY_MS);
729	<	assertTrue(q.hasWaitingConsumer());
730	<	assertEquals(q.getWaitingConsumerCount(), 1);
830	<	assertTrue(q.offer(one));
728	>	threadStarted.countDown();
729	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
730	>	assertEquals(0, q.getWaitingConsumerCount());
731		assertFalse(q.hasWaitingConsumer());
832	–	assertEquals(q.getWaitingConsumerCount(), 0);
732		}});
733
734	<	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
735	<	assertEquals(q.getWaitingConsumerCount(), 0);
734	>	threadStarted.await();
735	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
736	>	assertEquals(1, q.getWaitingConsumerCount());
737	>	assertTrue(q.hasWaitingConsumer());
738	>
739	>	assertTrue(q.offer(one));
740	>	assertEquals(0, q.getWaitingConsumerCount());
741		assertFalse(q.hasWaitingConsumer());
742	+
743		awaitTermination(t, MEDIUM_DELAY_MS);
744		}
745
#	Line 856 | Line 761 | public class LinkedTransferQueueTest ext
761		public void testTransfer2() throws InterruptedException {
762		final LinkedTransferQueue<Integer> q
763		= new LinkedTransferQueue<Integer>();
764	+	final CountDownLatch threadStarted = new CountDownLatch(1);
765
766		Thread t = newStartedThread(new CheckedRunnable() {
767		public void realRun() throws InterruptedException {
768	<	q.transfer(SIZE);
769	<	assertTrue(q.isEmpty());
768	>	threadStarted.countDown();
769	>	q.transfer(five);
770	>	checkEmpty(q);
771		}});
772
773	<	Thread.sleep(SHORT_DELAY_MS);
773	>	threadStarted.await();
774	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
775		assertEquals(1, q.size());
776	<	assertEquals(SIZE, (int) q.poll());
777	<	assertTrue(q.isEmpty());
776	>	assertSame(five, q.poll());
777	>	checkEmpty(q);
778		awaitTermination(t, MEDIUM_DELAY_MS);
779		}
780
#	Line 879 | Line 787 | public class LinkedTransferQueueTest ext
787
788		Thread first = newStartedThread(new CheckedRunnable() {
789		public void realRun() throws InterruptedException {
790	<	Integer i = SIZE + 1;
791	<	q.transfer(i);
884	<	assertTrue(!q.contains(i));
790	>	q.transfer(four);
791	>	assertTrue(!q.contains(four));
792		assertEquals(1, q.size());
793		}});
794
795		Thread interruptedThread = newStartedThread(
796		new CheckedInterruptedRunnable() {
797		public void realRun() throws InterruptedException {
798	<	while (q.size() == 0)
798	>	while (q.isEmpty())
799		Thread.yield();
800	<	q.transfer(SIZE);
800	>	q.transfer(five);
801		}});
802
803		while (q.size() < 2)
804		Thread.yield();
805		assertEquals(2, q.size());
806	<	assertEquals(SIZE + 1, (int) q.poll());
806	>	assertSame(four, q.poll());
807		first.join();
808		assertEquals(1, q.size());
809		interruptedThread.interrupt();
810		interruptedThread.join();
811	<	assertEquals(0, q.size());
905	<	assertTrue(q.isEmpty());
811	>	checkEmpty(q);
812		}
813
814		/**
#	Line 919 | Line 825 | public class LinkedTransferQueueTest ext
825		assertSame(three, q.poll());
826		}});
827
828	<	Thread.sleep(SHORT_DELAY_MS);
828	>	while (q.isEmpty())
829	>	Thread.yield();
830	>	assertFalse(q.isEmpty());
831	>	assertEquals(1, q.size());
832		assertTrue(q.offer(three));
833		assertSame(four, q.poll());
834		awaitTermination(t, MEDIUM_DELAY_MS);
#	Line 935 | Line 844 | public class LinkedTransferQueueTest ext
844
845		Thread t = newStartedThread(new CheckedRunnable() {
846		public void realRun() throws InterruptedException {
847	<	q.transfer(SIZE);
847	>	q.transfer(four);
848		checkEmpty(q);
849		}});
850
851	<	Thread.sleep(SHORT_DELAY_MS);
852	<	assertEquals(SIZE, (int) q.take());
851	>	while (q.isEmpty())
852	>	Thread.yield();
853	>	assertFalse(q.isEmpty());
854	>	assertEquals(1, q.size());
855	>	assertSame(four, q.take());
856		checkEmpty(q);
857		awaitTermination(t, MEDIUM_DELAY_MS);
858		}
#	Line 949 | Line 861 | public class LinkedTransferQueueTest ext
861		* tryTransfer(null) throws NullPointerException
862		*/
863		public void testTryTransfer1() {
864	+	final LinkedTransferQueue q = new LinkedTransferQueue();
865		try {
953	–	final LinkedTransferQueue q = new LinkedTransferQueue();
866		q.tryTransfer(null);
867		shouldThrow();
868		} catch (NullPointerException success) {}
#	Line 980 | Line 892 | public class LinkedTransferQueueTest ext
892		while (! q.hasWaitingConsumer())
893		Thread.yield();
894		assertTrue(q.hasWaitingConsumer());
895	<	assertTrue(q.isEmpty());
984	<	assertEquals(q.size(), 0);
895	>	checkEmpty(q);
896		assertTrue(q.tryTransfer(hotPotato));
897		}});
898
#	Line 1003 | Line 914 | public class LinkedTransferQueueTest ext
914		while (! q.hasWaitingConsumer())
915		Thread.yield();
916		assertTrue(q.hasWaitingConsumer());
917	<	assertTrue(q.isEmpty());
1007	<	assertEquals(q.size(), 0);
917	>	checkEmpty(q);
918		assertTrue(q.tryTransfer(hotPotato));
919		}});
920
#	Line 1014 | Line 924 | public class LinkedTransferQueueTest ext
924		}
925
926		/**
927	<	* tryTransfer waits the amount given if interrupted, and
1018	<	* throws interrupted exception
927	>	* tryTransfer blocks interruptibly if no takers
928		*/
929		public void testTryTransfer5() throws InterruptedException {
930		final LinkedTransferQueue q = new LinkedTransferQueue();
931	+	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
932	+	assertTrue(q.isEmpty());
933
934	<	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
934	>	Thread t = newStartedThread(new CheckedRunnable() {
935		public void realRun() throws InterruptedException {
936	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
936	>	Thread.currentThread().interrupt();
937	>	try {
938	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
939	>	shouldThrow();
940	>	} catch (InterruptedException success) {}
941	>	assertFalse(Thread.interrupted());
942	>
943	>	pleaseInterrupt.countDown();
944	>	try {
945	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
946	>	shouldThrow();
947	>	} catch (InterruptedException success) {}
948	>	assertFalse(Thread.interrupted());
949		}});
950
951	<	Thread.sleep(SMALL_DELAY_MS);
952	<	toInterrupt.interrupt();
953	<	toInterrupt.join();
951	>	await(pleaseInterrupt);
952	>	assertThreadStaysAlive(t);
953	>	t.interrupt();
954	>	awaitTermination(t);
955	>	checkEmpty(q);
956		}
957
958		/**
959	<	* tryTransfer gives up after the timeout and return false
959	>	* tryTransfer gives up after the timeout and returns false
960		*/
961		public void testTryTransfer6() throws InterruptedException {
962		final LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 1040 | Line 965 | public class LinkedTransferQueueTest ext
965		public void realRun() throws InterruptedException {
966		long t0 = System.nanoTime();
967		assertFalse(q.tryTransfer(new Object(),
968	<	SHORT_DELAY_MS, MILLISECONDS));
969	<	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
968	>	timeoutMillis(), MILLISECONDS));
969	>	assertTrue(millisElapsedSince(t0) >= timeoutMillis());
970	>	checkEmpty(q);
971		}});
972
973	<	checkEmpty(q);
1048	<	awaitTermination(t, MEDIUM_DELAY_MS);
973	>	awaitTermination(t);
974		checkEmpty(q);
975		}
976
#	Line 1060 | Line 985 | public class LinkedTransferQueueTest ext
985		Thread t = newStartedThread(new CheckedRunnable() {
986		public void realRun() throws InterruptedException {
987		assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
988	<	assertTrue(q.isEmpty());
988	>	checkEmpty(q);
989		}});
990
991	<	Thread.sleep(SHORT_DELAY_MS);
991	>	while (q.size() != 2)
992	>	Thread.yield();
993		assertEquals(2, q.size());
994		assertSame(four, q.poll());
995		assertSame(five, q.poll());
#	Line 1072 | Line 998 | public class LinkedTransferQueueTest ext
998		}
999
1000		/**
1001	<	* tryTransfer attempts to enqueue into the q and fails returning
1002	<	* false not enqueueing and the successive poll is null
1001	>	* tryTransfer attempts to enqueue into the queue and fails
1002	>	* returning false not enqueueing and the successive poll is null
1003		*/
1004		public void testTryTransfer8() throws InterruptedException {
1005		final LinkedTransferQueue q = new LinkedTransferQueue();
1006		assertTrue(q.offer(four));
1007		assertEquals(1, q.size());
1008	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1008	>	long t0 = System.nanoTime();
1009	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
1010	>	assertTrue(millisElapsedSince(t0) >= timeoutMillis());
1011		assertEquals(1, q.size());
1012		assertSame(four, q.poll());
1013		assertNull(q.poll());
#	Line 1088 | Line 1016 | public class LinkedTransferQueueTest ext
1016
1017		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1018		LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1019	<	assertTrue(q.isEmpty());
1019	>	checkEmpty(q);
1020		for (int i = 0; i < n; i++) {
1021		assertEquals(i, q.size());
1022		assertTrue(q.offer(i));
#	Line 1097 | Line 1025 | public class LinkedTransferQueueTest ext
1025		assertFalse(q.isEmpty());
1026		return q;
1027		}
1028	+
1029	+	/**
1030	+	* remove(null), contains(null) always return false
1031	+	*/
1032	+	public void testNeverContainsNull() {
1033	+	Collection<?>[] qs = {
1034	+	new LinkedTransferQueue<Object>(),
1035	+	populatedQueue(2),
1036	+	};
1037	+
1038	+	for (Collection<?> q : qs) {
1039	+	assertFalse(q.contains(null));
1040	+	assertFalse(q.remove(null));
1041	+	}
1042	+	}
1043		}

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