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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.27 by jsr166, Thu Oct 28 17:22:13 2010 UTC vs.
Revision 1.78 by jsr166, Sun May 14 01:30:34 2017 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.Callable;
19	>	import java.util.concurrent.CountDownLatch;
20	>	import java.util.concurrent.Executors;
21	>	import java.util.concurrent.ExecutorService;
22	>	import java.util.concurrent.LinkedTransferQueue;
23	>
24		import junit.framework.Test;
23	–	import junit.framework.TestSuite;
25
26		@SuppressWarnings({"unchecked", "rawtypes"})
27		public class LinkedTransferQueueTest extends JSR166TestCase {
27	–
28		public static class Generic extends BlockingQueueTest {
29		protected BlockingQueue emptyCollection() {
30		return new LinkedTransferQueue();
#	Line 32 | Line 32 | public class LinkedTransferQueueTest ext
32		}
33
34		public static void main(String[] args) {
35	<	junit.textui.TestRunner.run(suite());
35	>	main(suite(), args);
36		}
37
38		public static Test suite() {
39	+	class Implementation implements CollectionImplementation {
40	+	public Class<?> klazz() { return LinkedTransferQueue.class; }
41	+	public Collection emptyCollection() { return new LinkedTransferQueue(); }
42	+	public Object makeElement(int i) { return i; }
43	+	public boolean isConcurrent() { return true; }
44	+	public boolean permitsNulls() { return false; }
45	+	}
46		return newTestSuite(LinkedTransferQueueTest.class,
47	<	new Generic().testSuite());
48	<	}
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) {}
47	>	new Generic().testSuite(),
48	>	CollectionTest.testSuite(new Implementation()));
49		}
50
51		/**
#	Line 88 | 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];
93	<	new LinkedTransferQueue(Arrays.asList(ints));
78	>	new LinkedTransferQueue(elements);
79		shouldThrow();
80		} catch (NullPointerException success) {}
81		}
#	Line 100 | 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];
105	<	for (int i = 0; i < SIZE - 1; ++i) {
106	<	ints[i] = i;
107	<	}
108	<	new LinkedTransferQueue(Arrays.asList(ints));
93	>	new LinkedTransferQueue(elements);
94		shouldThrow();
95		} catch (NullPointerException success) {}
96		}
#	Line 138 | 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		/**
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	–	/**
140		* addAll(this) throws IllegalArgumentException
141		*/
142		public void testAddAllSelf() {
143	+	LinkedTransferQueue q = populatedQueue(SIZE);
144		try {
192	–	LinkedTransferQueue q = populatedQueue(SIZE);
145		q.addAll(q);
146		shouldThrow();
147		} catch (IllegalArgumentException success) {}
148		}
149
150		/**
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	–	/**
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 {
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	–	}
160		q.addAll(Arrays.asList(ints));
161		shouldThrow();
162		} catch (NullPointerException success) {}
#	Line 241 | Line 180 | public class LinkedTransferQueueTest ext
180		}
181
182		/**
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	–	/**
183		* all elements successfully put are contained
184		*/
185		public void testPut() {
186	<	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
186	>	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
187		for (int i = 0; i < SIZE; ++i) {
188	<	assertEquals(q.size(), i);
188	>	assertEquals(i, q.size());
189		q.put(i);
190		assertTrue(q.contains(i));
191		}
#	Line 274 | Line 202 | public class LinkedTransferQueueTest ext
202		}
203
204		/**
205	<	* take blocks interruptibly when empty
278	<	*/
279	<	public void testTakeFromEmpty() throws InterruptedException {
280	<	final LinkedTransferQueue q = new LinkedTransferQueue();
281	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
282	<	public void realRun() throws InterruptedException {
283	<	q.take();
284	<	}});
285	<	Thread.sleep(SHORT_DELAY_MS);
286	<	t.interrupt();
287	<	t.join();
288	<	}
289	<
290	<	/**
291	<	* 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());
214	<	}
212	>	for (int i = 0; i < SIZE; i++) assertEquals(i, q.take());
213	>
214	>	Thread.currentThread().interrupt();
215	>	try {
216	>	q.take();
217	>	shouldThrow();
218	>	} catch (InterruptedException success) {}
219	>	assertFalse(Thread.interrupted());
220	>
221	>	pleaseInterrupt.countDown();
222		try {
223		q.take();
224		shouldThrow();
225		} catch (InterruptedException success) {}
226	+	assertFalse(Thread.interrupted());
227		}});
228
229	<	t.start();
230	<	Thread.sleep(SHORT_DELAY_MS);
229	>	await(pleaseInterrupt);
230	>	assertThreadBlocks(t, Thread.State.WAITING);
231		t.interrupt();
232	<	t.join();
310	<	checkEmpty(q);
232	>	awaitTermination(t);
233		}
234
235		/**
#	Line 323 | Line 245 | public class LinkedTransferQueueTest ext
245		}
246
247		/**
248	<	* timed pool with zero timeout succeeds when non-empty, else times out
248	>	* timed poll with zero timeout succeeds when non-empty, else times out
249		*/
250		public void testTimedPoll0() throws InterruptedException {
251		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
#	Line 335 | Line 257 | public class LinkedTransferQueueTest ext
257		}
258
259		/**
260	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
260	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
261		*/
262		public void testTimedPoll() throws InterruptedException {
263		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
264	<	for (int i = 0; i < SIZE; ++i) {
265	<	long t0 = System.nanoTime();
264	>	long startTime = System.nanoTime();
265	>	for (int i = 0; i < SIZE; ++i)
266		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
267	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
268	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
269	<	}
270	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
267	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
268	>
269	>	startTime = System.nanoTime();
270	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
271	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
272		checkEmpty(q);
273		}
274
#	Line 354 | Line 277 | public class LinkedTransferQueueTest ext
277		* returning timeout status
278		*/
279		public void testInterruptedTimedPoll() throws InterruptedException {
280	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
280	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
281	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
282		Thread t = newStartedThread(new CheckedRunnable() {
283		public void realRun() throws InterruptedException {
284	<	for (int i = 0; i < SIZE; ++i) {
285	<	long t0 = System.nanoTime();
284	>	long startTime = System.nanoTime();
285	>	for (int i = 0; i < SIZE; i++)
286		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
287	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
288	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
289	<	}
287	>
288	>	Thread.currentThread().interrupt();
289	>	try {
290	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
291	>	shouldThrow();
292	>	} catch (InterruptedException success) {}
293	>	assertFalse(Thread.interrupted());
294	>
295	>	pleaseInterrupt.countDown();
296		try {
297		q.poll(LONG_DELAY_MS, MILLISECONDS);
298		shouldThrow();
299		} catch (InterruptedException success) {}
300	+	assertFalse(Thread.interrupted());
301	+
302	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
303		}});
304
305	<	Thread.sleep(SMALL_DELAY_MS);
305	>	await(pleaseInterrupt);
306	>	assertThreadBlocks(t, Thread.State.TIMED_WAITING);
307		t.interrupt();
308	<	t.join();
308	>	awaitTermination(t);
309	>	checkEmpty(q);
310	>	}
311	>
312	>	/**
313	>	* timed poll after thread interrupted throws InterruptedException
314	>	* instead of returning timeout status
315	>	*/
316	>	public void testTimedPollAfterInterrupt() throws InterruptedException {
317	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
318	>	Thread t = newStartedThread(new CheckedRunnable() {
319	>	public void realRun() throws InterruptedException {
320	>	long startTime = System.nanoTime();
321	>	Thread.currentThread().interrupt();
322	>	for (int i = 0; i < SIZE; ++i)
323	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
324	>	try {
325	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
326	>	shouldThrow();
327	>	} catch (InterruptedException success) {}
328	>	assertFalse(Thread.interrupted());
329	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
330	>	}});
331	>
332	>	awaitTermination(t);
333		checkEmpty(q);
334		}
335
#	Line 422 | Line 380 | public class LinkedTransferQueueTest ext
380		}
381
382		/**
425	–	* remove(x) removes x and returns true if present
426	–	*/
427	–	public void testRemoveElement() throws InterruptedException {
428	–	LinkedTransferQueue q = populatedQueue(SIZE);
429	–	for (int i = 1; i < SIZE; i += 2) {
430	–	assertTrue(q.remove(i));
431	–	}
432	–	for (int i = 0; i < SIZE; i += 2) {
433	–	assertTrue(q.remove(i));
434	–	assertFalse(q.remove(i + 1));
435	–	}
436	–	checkEmpty(q);
437	–	}
438	–
439	–	/**
383		* An add following remove(x) succeeds
384		*/
385		public void testRemoveElementAndAdd() throws InterruptedException {
#	Line 482 | Line 425 | public class LinkedTransferQueueTest ext
425		*/
426		public void testContainsAll() {
427		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
428	<	LinkedTransferQueue<Integer> p = new LinkedTransferQueue<Integer>();
428	>	LinkedTransferQueue<Integer> p = new LinkedTransferQueue<>();
429		for (int i = 0; i < SIZE; ++i) {
430		assertTrue(q.containsAll(p));
431		assertFalse(p.containsAll(q));
#	Line 528 | Line 471 | public class LinkedTransferQueueTest ext
471		}
472
473		/**
474	<	* toArray() contains all elements
474	>	* toArray() contains all elements in FIFO order
475		*/
476	<	public void testToArray() throws InterruptedException {
476	>	public void testToArray() {
477		LinkedTransferQueue q = populatedQueue(SIZE);
478		Object[] o = q.toArray();
479		for (int i = 0; i < o.length; i++) {
480	<	assertEquals(o[i], q.take());
480	>	assertSame(o[i], q.poll());
481		}
482		}
483
484		/**
485	<	* toArray(a) contains all elements
485	>	* toArray(a) contains all elements in FIFO order
486		*/
487	<	public void testToArray2() throws InterruptedException {
487	>	public void testToArray2() {
488		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
489		Integer[] ints = new Integer[SIZE];
490	<	ints = q.toArray(ints);
490	>	Integer[] array = q.toArray(ints);
491	>	assertSame(ints, array);
492		for (int i = 0; i < ints.length; i++) {
493	<	assertEquals(ints[i], q.take());
493	>	assertSame(ints[i], q.poll());
494		}
495		}
496
497		/**
498	<	* toArray(null) throws NullPointerException
555	<	*/
556	<	public void testToArray_BadArg() {
557	<	LinkedTransferQueue q = populatedQueue(SIZE);
558	<	try {
559	<	Object o[] = q.toArray(null);
560	<	shouldThrow();
561	<	} catch (NullPointerException success) {}
562	<	}
563	<
564	<	/**
565	<	* toArray(incompatible array type) throws CCE
498	>	* toArray(incompatible array type) throws ArrayStoreException
499		*/
500		public void testToArray1_BadArg() {
501		LinkedTransferQueue q = populatedQueue(SIZE);
502		try {
503	<	Object o[] = q.toArray(new String[10]);
503	>	q.toArray(new String[10]);
504		shouldThrow();
505		} catch (ArrayStoreException success) {}
506		}
#	Line 578 | Line 511 | public class LinkedTransferQueueTest ext
511		public void testIterator() throws InterruptedException {
512		LinkedTransferQueue q = populatedQueue(SIZE);
513		Iterator it = q.iterator();
514	<	int i = 0;
515	<	while (it.hasNext()) {
516	<	assertEquals(it.next(), i++);
517	<	}
514	>	int i;
515	>	for (i = 0; it.hasNext(); i++)
516	>	assertTrue(q.contains(it.next()));
517	>	assertEquals(i, SIZE);
518	>	assertIteratorExhausted(it);
519	>
520	>	it = q.iterator();
521	>	for (i = 0; it.hasNext(); i++)
522	>	assertEquals(it.next(), q.take());
523		assertEquals(i, SIZE);
524	+	assertIteratorExhausted(it);
525	+	}
526	+
527	+	/**
528	+	* iterator of empty collection has no elements
529	+	*/
530	+	public void testEmptyIterator() {
531	+	assertIteratorExhausted(new LinkedTransferQueue().iterator());
532		}
533
534		/**
#	Line 608 | Line 554 | public class LinkedTransferQueueTest ext
554		* iterator ordering is FIFO
555		*/
556		public void testIteratorOrdering() {
557	<	final LinkedTransferQueue<Integer> q
612	<	= new LinkedTransferQueue<Integer>();
557	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
558		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
559		q.add(one);
560		q.add(two);
#	Line 644 | Line 589 | public class LinkedTransferQueueTest ext
589		LinkedTransferQueue q = populatedQueue(SIZE);
590		String s = q.toString();
591		for (int i = 0; i < SIZE; ++i) {
592	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
592	>	assertTrue(s.contains(String.valueOf(i)));
593		}
594		}
595
#	Line 653 | Line 598 | public class LinkedTransferQueueTest ext
598		*/
599		public void testOfferInExecutor() {
600		final LinkedTransferQueue q = new LinkedTransferQueue();
601	<	q.add(one);
602	<	q.add(two);
603	<	ExecutorService executor = Executors.newFixedThreadPool(2);
659	<
660	<	executor.execute(new CheckedRunnable() {
661	<	public void realRun() {
662	<	assertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS));
663	<	}});
601	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
602	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
603	>	try (PoolCleaner cleaner = cleaner(executor)) {
604
605	<	executor.execute(new CheckedRunnable() {
606	<	public void realRun() throws InterruptedException {
607	<	Thread.sleep(SMALL_DELAY_MS);
608	<	assertSame(one, q.take());
609	<	}});
605	>	executor.execute(new CheckedRunnable() {
606	>	public void realRun() throws InterruptedException {
607	>	threadsStarted.await();
608	>	long startTime = System.nanoTime();
609	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
610	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
611	>	}});
612
613	<	joinPool(executor);
613	>	executor.execute(new CheckedRunnable() {
614	>	public void realRun() throws InterruptedException {
615	>	threadsStarted.await();
616	>	assertSame(one, q.take());
617	>	checkEmpty(q);
618	>	}});
619	>	}
620		}
621
622		/**
#	Line 676 | Line 624 | public class LinkedTransferQueueTest ext
624		*/
625		public void testPollInExecutor() {
626		final LinkedTransferQueue q = new LinkedTransferQueue();
627	<	ExecutorService executor = Executors.newFixedThreadPool(2);
627	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
628	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
629	>	try (PoolCleaner cleaner = cleaner(executor)) {
630
631	<	executor.execute(new CheckedRunnable() {
632	<	public void realRun() throws InterruptedException {
633	<	assertNull(q.poll());
634	<	assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
635	<	assertTrue(q.isEmpty());
636	<	}});
637	<
638	<	executor.execute(new CheckedRunnable() {
639	<	public void realRun() throws InterruptedException {
690	<	Thread.sleep(SMALL_DELAY_MS);
691	<	q.put(one);
692	<	}});
631	>	executor.execute(new CheckedRunnable() {
632	>	public void realRun() throws InterruptedException {
633	>	assertNull(q.poll());
634	>	threadsStarted.await();
635	>	long startTime = System.nanoTime();
636	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
637	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
638	>	checkEmpty(q);
639	>	}});
640
641	<	joinPool(executor);
641	>	executor.execute(new CheckedRunnable() {
642	>	public void realRun() throws InterruptedException {
643	>	threadsStarted.await();
644	>	q.put(one);
645	>	}});
646	>	}
647		}
648
649		/**
650		* A deserialized serialized queue has same elements in same order
651		*/
652		public void testSerialization() throws Exception {
653	<	LinkedTransferQueue q = populatedQueue(SIZE);
654	<
703	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
704	<	ObjectOutputStream out
705	<	= new ObjectOutputStream(new BufferedOutputStream(bout));
706	<	out.writeObject(q);
707	<	out.close();
653	>	Queue x = populatedQueue(SIZE);
654	>	Queue y = serialClone(x);
655
656	<	ByteArrayInputStream bin
657	<	= new ByteArrayInputStream(bout.toByteArray());
658	<	ObjectInputStream in
659	<	= new ObjectInputStream(new BufferedInputStream(bin));
660	<	LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
661	<
662	<	assertEquals(q.size(), r.size());
716	<	while (!q.isEmpty()) {
717	<	assertEquals(q.remove(), r.remove());
656	>	assertNotSame(y, x);
657	>	assertEquals(x.size(), y.size());
658	>	assertEquals(x.toString(), y.toString());
659	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
660	>	while (!x.isEmpty()) {
661	>	assertFalse(y.isEmpty());
662	>	assertEquals(x.remove(), y.remove());
663		}
664	<	}
720	<
721	<	/**
722	<	* drainTo(null) throws NullPointerException
723	<	*/
724	<	public void testDrainToNull() {
725	<	LinkedTransferQueue q = populatedQueue(SIZE);
726	<	try {
727	<	q.drainTo(null);
728	<	shouldThrow();
729	<	} catch (NullPointerException success) {}
730	<	}
731	<
732	<	/**
733	<	* drainTo(this) throws IllegalArgumentException
734	<	*/
735	<	public void testDrainToSelf() {
736	<	LinkedTransferQueue q = populatedQueue(SIZE);
737	<	try {
738	<	q.drainTo(q);
739	<	shouldThrow();
740	<	} catch (IllegalArgumentException success) {}
664	>	assertTrue(y.isEmpty());
665		}
666
667		/**
#	Line 747 | Line 671 | public class LinkedTransferQueueTest ext
671		LinkedTransferQueue q = populatedQueue(SIZE);
672		ArrayList l = new ArrayList();
673		q.drainTo(l);
674	<	assertEquals(q.size(), 0);
675	<	assertEquals(l.size(), SIZE);
674	>	assertEquals(0, q.size());
675	>	assertEquals(SIZE, l.size());
676		for (int i = 0; i < SIZE; ++i) {
677	<	assertEquals(l.get(i), i);
677	>	assertEquals(i, l.get(i));
678		}
679		q.add(zero);
680		q.add(one);
#	Line 759 | Line 683 | public class LinkedTransferQueueTest ext
683		assertTrue(q.contains(one));
684		l.clear();
685		q.drainTo(l);
686	<	assertEquals(q.size(), 0);
687	<	assertEquals(l.size(), 2);
686	>	assertEquals(0, q.size());
687	>	assertEquals(2, l.size());
688		for (int i = 0; i < 2; ++i) {
689	<	assertEquals(l.get(i), i);
689	>	assertEquals(i, l.get(i));
690		}
691		}
692
#	Line 778 | Line 702 | public class LinkedTransferQueueTest ext
702		ArrayList l = new ArrayList();
703		q.drainTo(l);
704		assertTrue(l.size() >= SIZE);
705	<	for (int i = 0; i < SIZE; ++i) {
706	<	assertEquals(l.get(i), i);
707	<	}
784	<	t.join();
705	>	for (int i = 0; i < SIZE; ++i)
706	>	assertEquals(i, l.get(i));
707	>	awaitTermination(t);
708		assertTrue(q.size() + l.size() >= SIZE);
709		}
710
711		/**
789	–	* drainTo(null, n) throws NullPointerException
790	–	*/
791	–	public void testDrainToNullN() {
792	–	LinkedTransferQueue q = populatedQueue(SIZE);
793	–	try {
794	–	q.drainTo(null, SIZE);
795	–	shouldThrow();
796	–	} catch (NullPointerException success) {}
797	–	}
798	–
799	–	/**
800	–	* drainTo(this, n) throws IllegalArgumentException
801	–	*/
802	–	public void testDrainToSelfN() {
803	–	LinkedTransferQueue q = populatedQueue(SIZE);
804	–	try {
805	–	q.drainTo(q, SIZE);
806	–	shouldThrow();
807	–	} catch (IllegalArgumentException success) {}
808	–	}
809	–
810	–	/**
712		* drainTo(c, n) empties first min(n, size) elements of queue into c
713		*/
714		public void testDrainToN() {
#	Line 819 | Line 720 | public class LinkedTransferQueueTest ext
720		ArrayList l = new ArrayList();
721		q.drainTo(l, i);
722		int k = (i < SIZE) ? i : SIZE;
723	<	assertEquals(l.size(), k);
724	<	assertEquals(q.size(), SIZE - k);
725	<	for (int j = 0; j < k; ++j) {
726	<	assertEquals(l.get(j), j);
727	<	}
827	<	while (q.poll() != null)
828	<	;
723	>	assertEquals(k, l.size());
724	>	assertEquals(SIZE - k, q.size());
725	>	for (int j = 0; j < k; ++j)
726	>	assertEquals(j, l.get(j));
727	>	do {} while (q.poll() != null);
728		}
729		}
730
#	Line 835 | Line 734 | public class LinkedTransferQueueTest ext
734		*/
735		public void testWaitingConsumer() throws InterruptedException {
736		final LinkedTransferQueue q = new LinkedTransferQueue();
737	<	assertEquals(q.getWaitingConsumerCount(), 0);
737	>	assertEquals(0, q.getWaitingConsumerCount());
738		assertFalse(q.hasWaitingConsumer());
739	+	final CountDownLatch threadStarted = new CountDownLatch(1);
740
741		Thread t = newStartedThread(new CheckedRunnable() {
742		public void realRun() throws InterruptedException {
743	<	Thread.sleep(SMALL_DELAY_MS);
744	<	assertTrue(q.hasWaitingConsumer());
745	<	assertEquals(q.getWaitingConsumerCount(), 1);
746	<	assertTrue(q.offer(one));
743	>	threadStarted.countDown();
744	>	long startTime = System.nanoTime();
745	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
746	>	assertEquals(0, q.getWaitingConsumerCount());
747		assertFalse(q.hasWaitingConsumer());
748	<	assertEquals(q.getWaitingConsumerCount(), 0);
748	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
749		}});
750
751	<	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
752	<	assertEquals(q.getWaitingConsumerCount(), 0);
751	>	threadStarted.await();
752	>	Callable<Boolean> oneConsumer
753	>	= new Callable<Boolean>() { public Boolean call() {
754	>	return q.hasWaitingConsumer()
755	>	&& q.getWaitingConsumerCount() == 1; }};
756	>	waitForThreadToEnterWaitState(t, oneConsumer);
757	>
758	>	assertTrue(q.offer(one));
759	>	assertEquals(0, q.getWaitingConsumerCount());
760		assertFalse(q.hasWaitingConsumer());
761	<	t.join();
761	>
762	>	awaitTermination(t);
763		}
764
765		/**
#	Line 867 | Line 775 | public class LinkedTransferQueueTest ext
775
776		/**
777		* transfer waits until a poll occurs. The transfered element
778	<	* is returned by this associated poll.
778	>	* is returned by the associated poll.
779		*/
780		public void testTransfer2() throws InterruptedException {
781	<	final LinkedTransferQueue<Integer> q
782	<	= new LinkedTransferQueue<Integer>();
781	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
782	>	final CountDownLatch threadStarted = new CountDownLatch(1);
783
784		Thread t = newStartedThread(new CheckedRunnable() {
785		public void realRun() throws InterruptedException {
786	<	q.transfer(SIZE);
787	<	assertTrue(q.isEmpty());
786	>	threadStarted.countDown();
787	>	q.transfer(five);
788	>	checkEmpty(q);
789		}});
790
791	<	Thread.sleep(SHORT_DELAY_MS);
792	<	assertEquals(1, q.size());
793	<	assertEquals(SIZE, (int) q.poll());
794	<	assertTrue(q.isEmpty());
795	<	t.join();
791	>	threadStarted.await();
792	>	Callable<Boolean> oneElement
793	>	= new Callable<Boolean>() { public Boolean call() {
794	>	return !q.isEmpty() && q.size() == 1; }};
795	>	waitForThreadToEnterWaitState(t, oneElement);
796	>
797	>	assertSame(five, q.poll());
798	>	checkEmpty(q);
799	>	awaitTermination(t);
800		}
801
802		/**
803		* transfer waits until a poll occurs, and then transfers in fifo order
804		*/
805		public void testTransfer3() throws InterruptedException {
806	<	final LinkedTransferQueue<Integer> q
894	<	= new LinkedTransferQueue<Integer>();
806	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
807
808		Thread first = newStartedThread(new CheckedRunnable() {
809		public void realRun() throws InterruptedException {
810	<	Integer i = SIZE + 1;
811	<	q.transfer(i);
900	<	assertTrue(!q.contains(i));
810	>	q.transfer(four);
811	>	assertFalse(q.contains(four));
812		assertEquals(1, q.size());
813		}});
814
815		Thread interruptedThread = newStartedThread(
816		new CheckedInterruptedRunnable() {
817		public void realRun() throws InterruptedException {
818	<	while (q.size() == 0)
818	>	while (q.isEmpty())
819		Thread.yield();
820	<	q.transfer(SIZE);
820	>	q.transfer(five);
821		}});
822
823		while (q.size() < 2)
824		Thread.yield();
825		assertEquals(2, q.size());
826	<	assertEquals(SIZE + 1, (int) q.poll());
826	>	assertSame(four, q.poll());
827		first.join();
828		assertEquals(1, q.size());
829		interruptedThread.interrupt();
830		interruptedThread.join();
831	<	assertEquals(0, q.size());
921	<	assertTrue(q.isEmpty());
831	>	checkEmpty(q);
832		}
833
834		/**
#	Line 935 | Line 845 | public class LinkedTransferQueueTest ext
845		assertSame(three, q.poll());
846		}});
847
848	<	Thread.sleep(SHORT_DELAY_MS);
848	>	while (q.isEmpty())
849	>	Thread.yield();
850	>	assertFalse(q.isEmpty());
851	>	assertEquals(1, q.size());
852		assertTrue(q.offer(three));
853		assertSame(four, q.poll());
854	<	t.join();
854	>	awaitTermination(t);
855		}
856
857		/**
858		* transfer waits until a take occurs. The transfered element
859	<	* is returned by this associated take.
859	>	* is returned by the associated take.
860		*/
861		public void testTransfer5() throws InterruptedException {
862	<	final LinkedTransferQueue<Integer> q
950	<	= new LinkedTransferQueue<Integer>();
862	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
863
864		Thread t = newStartedThread(new CheckedRunnable() {
865		public void realRun() throws InterruptedException {
866	<	q.transfer(SIZE);
866	>	q.transfer(four);
867		checkEmpty(q);
868		}});
869
870	<	Thread.sleep(SHORT_DELAY_MS);
871	<	assertEquals(SIZE, (int) q.take());
870	>	while (q.isEmpty())
871	>	Thread.yield();
872	>	assertFalse(q.isEmpty());
873	>	assertEquals(1, q.size());
874	>	assertSame(four, q.take());
875		checkEmpty(q);
876	<	t.join();
876	>	awaitTermination(t);
877		}
878
879		/**
880		* tryTransfer(null) throws NullPointerException
881		*/
882		public void testTryTransfer1() {
883	+	final LinkedTransferQueue q = new LinkedTransferQueue();
884		try {
969	–	final LinkedTransferQueue q = new LinkedTransferQueue();
885		q.tryTransfer(null);
886		shouldThrow();
887		} catch (NullPointerException success) {}
#	Line 996 | Line 911 | public class LinkedTransferQueueTest ext
911		while (! q.hasWaitingConsumer())
912		Thread.yield();
913		assertTrue(q.hasWaitingConsumer());
914	<	assertTrue(q.isEmpty());
1000	<	assertEquals(q.size(), 0);
914	>	checkEmpty(q);
915		assertTrue(q.tryTransfer(hotPotato));
916		}});
917
918	<	assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
918	>	long startTime = System.nanoTime();
919	>	assertSame(hotPotato, q.poll(LONG_DELAY_MS, MILLISECONDS));
920	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
921		checkEmpty(q);
922	<	t.join();
922	>	awaitTermination(t);
923		}
924
925		/**
#	Line 1019 | Line 935 | public class LinkedTransferQueueTest ext
935		while (! q.hasWaitingConsumer())
936		Thread.yield();
937		assertTrue(q.hasWaitingConsumer());
938	<	assertTrue(q.isEmpty());
1023	<	assertEquals(q.size(), 0);
938	>	checkEmpty(q);
939		assertTrue(q.tryTransfer(hotPotato));
940		}});
941
942		assertSame(q.take(), hotPotato);
943		checkEmpty(q);
944	<	t.join();
944	>	awaitTermination(t);
945		}
946
947		/**
948	<	* tryTransfer waits the amount given if interrupted, and
1034	<	* throws interrupted exception
948	>	* tryTransfer blocks interruptibly if no takers
949		*/
950		public void testTryTransfer5() throws InterruptedException {
951		final LinkedTransferQueue q = new LinkedTransferQueue();
952	+	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
953	+	assertTrue(q.isEmpty());
954
955	<	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
955	>	Thread t = newStartedThread(new CheckedRunnable() {
956		public void realRun() throws InterruptedException {
957	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
957	>	long startTime = System.nanoTime();
958	>	Thread.currentThread().interrupt();
959	>	try {
960	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
961	>	shouldThrow();
962	>	} catch (InterruptedException success) {}
963	>	assertFalse(Thread.interrupted());
964	>
965	>	pleaseInterrupt.countDown();
966	>	try {
967	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
968	>	shouldThrow();
969	>	} catch (InterruptedException success) {}
970	>	assertFalse(Thread.interrupted());
971	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
972		}});
973
974	<	Thread.sleep(SMALL_DELAY_MS);
975	<	toInterrupt.interrupt();
976	<	toInterrupt.join();
974	>	await(pleaseInterrupt);
975	>	assertThreadBlocks(t, Thread.State.TIMED_WAITING);
976	>	t.interrupt();
977	>	awaitTermination(t);
978	>	checkEmpty(q);
979		}
980
981		/**
982	<	* tryTransfer gives up after the timeout and return false
982	>	* tryTransfer gives up after the timeout and returns false
983		*/
984		public void testTryTransfer6() throws InterruptedException {
985		final LinkedTransferQueue q = new LinkedTransferQueue();
986
987		Thread t = newStartedThread(new CheckedRunnable() {
988		public void realRun() throws InterruptedException {
989	<	long t0 = System.nanoTime();
989	>	long startTime = System.nanoTime();
990		assertFalse(q.tryTransfer(new Object(),
991	<	SHORT_DELAY_MS, MILLISECONDS));
992	<	long elapsed = NANOSECONDS.toMillis(System.nanoTime() - t0);
993	<	assertTrue(elapsed >= SHORT_DELAY_MS);
991	>	timeoutMillis(), MILLISECONDS));
992	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
993	>	checkEmpty(q);
994		}});
995
996	<	checkEmpty(q);
1065	<	awaitTermination(t, MEDIUM_DELAY_MS);
996	>	awaitTermination(t);
997		checkEmpty(q);
998		}
999
#	Line 1076 | Line 1007 | public class LinkedTransferQueueTest ext
1007
1008		Thread t = newStartedThread(new CheckedRunnable() {
1009		public void realRun() throws InterruptedException {
1010	<	assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
1011	<	assertTrue(q.isEmpty());
1010	>	long startTime = System.nanoTime();
1011	>	assertTrue(q.tryTransfer(five, LONG_DELAY_MS, MILLISECONDS));
1012	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1013	>	checkEmpty(q);
1014		}});
1015
1016	<	Thread.sleep(SHORT_DELAY_MS);
1016	>	while (q.size() != 2)
1017	>	Thread.yield();
1018		assertEquals(2, q.size());
1019		assertSame(four, q.poll());
1020		assertSame(five, q.poll());
1021		checkEmpty(q);
1022	<	t.join();
1022	>	awaitTermination(t);
1023		}
1024
1025		/**
1026	<	* tryTransfer attempts to enqueue into the q and fails returning
1027	<	* false not enqueueing and the successive poll is null
1026	>	* tryTransfer attempts to enqueue into the queue and fails
1027	>	* returning false not enqueueing and the successive poll is null
1028		*/
1029		public void testTryTransfer8() throws InterruptedException {
1030		final LinkedTransferQueue q = new LinkedTransferQueue();
1031		assertTrue(q.offer(four));
1032		assertEquals(1, q.size());
1033	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1033	>	long startTime = System.nanoTime();
1034	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
1035	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
1036		assertEquals(1, q.size());
1037		assertSame(four, q.poll());
1038		assertNull(q.poll());
#	Line 1104 | Line 1040 | public class LinkedTransferQueueTest ext
1040		}
1041
1042		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1043	<	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1044	<	assertTrue(q.isEmpty());
1043	>	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
1044	>	checkEmpty(q);
1045		for (int i = 0; i < n; i++) {
1046		assertEquals(i, q.size());
1047		assertTrue(q.offer(i));
#	Line 1114 | Line 1050 | public class LinkedTransferQueueTest ext
1050		assertFalse(q.isEmpty());
1051		return q;
1052		}
1053	+
1054	+	/**
1055	+	* remove(null), contains(null) always return false
1056	+	*/
1057	+	public void testNeverContainsNull() {
1058	+	Collection<?>[] qs = {
1059	+	new LinkedTransferQueue<Object>(),
1060	+	populatedQueue(2),
1061	+	};
1062	+
1063	+	for (Collection<?> q : qs) {
1064	+	assertFalse(q.contains(null));
1065	+	assertFalse(q.remove(null));
1066	+	}
1067	+	}
1068		}

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