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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 1.83 by jsr166, Thu Sep 5 21:11:13 2019 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	>	if (randomBoolean()) 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) {
361	<	long t0 = System.nanoTime();
284	>	for (int i = 0; i < SIZE; i++)
285		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
286	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
287	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
288	<	}
286	>
287	>	Thread.currentThread().interrupt();
288	>	try {
289	>	q.poll(randomTimeout(), randomTimeUnit());
290	>	shouldThrow();
291	>	} catch (InterruptedException success) {}
292	>	assertFalse(Thread.interrupted());
293	>
294	>	pleaseInterrupt.countDown();
295		try {
296	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
296	>	q.poll(LONGER_DELAY_MS, MILLISECONDS);
297		shouldThrow();
298		} catch (InterruptedException success) {}
299	+	assertFalse(Thread.interrupted());
300		}});
301
302	<	Thread.sleep(SMALL_DELAY_MS);
302	>	await(pleaseInterrupt);
303	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
304		t.interrupt();
305	<	t.join();
305	>	awaitTermination(t);
306	>	checkEmpty(q);
307	>	}
308	>
309	>	/**
310	>	* timed poll after thread interrupted throws InterruptedException
311	>	* instead of returning timeout status
312	>	*/
313	>	public void testTimedPollAfterInterrupt() throws InterruptedException {
314	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
315	>	Thread t = newStartedThread(new CheckedRunnable() {
316	>	public void realRun() throws InterruptedException {
317	>	long startTime = System.nanoTime();
318	>	Thread.currentThread().interrupt();
319	>	for (int i = 0; i < SIZE; ++i)
320	>	assertEquals(i, (int) q.poll(randomTimeout(), randomTimeUnit()));
321	>	try {
322	>	q.poll(randomTimeout(), randomTimeUnit());
323	>	shouldThrow();
324	>	} catch (InterruptedException success) {}
325	>	assertFalse(Thread.interrupted());
326	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
327	>	}});
328	>
329	>	awaitTermination(t);
330		checkEmpty(q);
331		}
332
#	Line 422 | Line 377 | public class LinkedTransferQueueTest ext
377		}
378
379		/**
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	–	/**
380		* An add following remove(x) succeeds
381		*/
382		public void testRemoveElementAndAdd() throws InterruptedException {
#	Line 482 | Line 422 | public class LinkedTransferQueueTest ext
422		*/
423		public void testContainsAll() {
424		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
425	<	LinkedTransferQueue<Integer> p = new LinkedTransferQueue<Integer>();
425	>	LinkedTransferQueue<Integer> p = new LinkedTransferQueue<>();
426		for (int i = 0; i < SIZE; ++i) {
427		assertTrue(q.containsAll(p));
428		assertFalse(p.containsAll(q));
#	Line 528 | Line 468 | public class LinkedTransferQueueTest ext
468		}
469
470		/**
471	<	* toArray() contains all elements
471	>	* toArray() contains all elements in FIFO order
472		*/
473	<	public void testToArray() throws InterruptedException {
473	>	public void testToArray() {
474		LinkedTransferQueue q = populatedQueue(SIZE);
475	<	Object[] o = q.toArray();
476	<	for (int i = 0; i < o.length; i++) {
477	<	assertEquals(o[i], q.take());
478	<	}
475	>	Object[] a = q.toArray();
476	>	assertSame(Object[].class, a.getClass());
477	>	for (Object o : a)
478	>	assertSame(o, q.poll());
479	>	assertTrue(q.isEmpty());
480		}
481
482		/**
483	<	* toArray(a) contains all elements
483	>	* toArray(a) contains all elements in FIFO order
484		*/
485	<	public void testToArray2() throws InterruptedException {
485	>	public void testToArray2() {
486		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
487		Integer[] ints = new Integer[SIZE];
488	<	ints = q.toArray(ints);
489	<	for (int i = 0; i < ints.length; i++) {
490	<	assertEquals(ints[i], q.take());
491	<	}
492	<	}
552	<
553	<	/**
554	<	* 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) {}
488	>	Integer[] array = q.toArray(ints);
489	>	assertSame(ints, array);
490	>	for (Integer o : ints)
491	>	assertSame(o, q.poll());
492	>	assertTrue(q.isEmpty());
493		}
494
495		/**
496	<	* toArray(incompatible array type) throws CCE
496	>	* toArray(incompatible array type) throws ArrayStoreException
497		*/
498		public void testToArray1_BadArg() {
499		LinkedTransferQueue q = populatedQueue(SIZE);
500		try {
501	<	Object o[] = q.toArray(new String[10]);
501	>	q.toArray(new String[10]);
502		shouldThrow();
503		} catch (ArrayStoreException success) {}
504		}
#	Line 578 | Line 509 | public class LinkedTransferQueueTest ext
509		public void testIterator() throws InterruptedException {
510		LinkedTransferQueue q = populatedQueue(SIZE);
511		Iterator it = q.iterator();
512	<	int i = 0;
513	<	while (it.hasNext()) {
514	<	assertEquals(it.next(), i++);
515	<	}
512	>	int i;
513	>	for (i = 0; it.hasNext(); i++)
514	>	assertTrue(q.contains(it.next()));
515	>	assertEquals(i, SIZE);
516	>	assertIteratorExhausted(it);
517	>
518	>	it = q.iterator();
519	>	for (i = 0; it.hasNext(); i++)
520	>	assertEquals(it.next(), q.take());
521		assertEquals(i, SIZE);
522	+	assertIteratorExhausted(it);
523	+	}
524	+
525	+	/**
526	+	* iterator of empty collection has no elements
527	+	*/
528	+	public void testEmptyIterator() {
529	+	assertIteratorExhausted(new LinkedTransferQueue().iterator());
530		}
531
532		/**
#	Line 608 | Line 552 | public class LinkedTransferQueueTest ext
552		* iterator ordering is FIFO
553		*/
554		public void testIteratorOrdering() {
555	<	final LinkedTransferQueue<Integer> q
612	<	= new LinkedTransferQueue<Integer>();
555	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
556		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
557		q.add(one);
558		q.add(two);
#	Line 644 | Line 587 | public class LinkedTransferQueueTest ext
587		LinkedTransferQueue q = populatedQueue(SIZE);
588		String s = q.toString();
589		for (int i = 0; i < SIZE; ++i) {
590	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
590	>	assertTrue(s.contains(String.valueOf(i)));
591		}
592		}
593
#	Line 653 | Line 596 | public class LinkedTransferQueueTest ext
596		*/
597		public void testOfferInExecutor() {
598		final LinkedTransferQueue q = new LinkedTransferQueue();
599	<	q.add(one);
600	<	q.add(two);
601	<	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	<	}});
599	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
600	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
601	>	try (PoolCleaner cleaner = cleaner(executor)) {
602
603	<	executor.execute(new CheckedRunnable() {
604	<	public void realRun() throws InterruptedException {
605	<	Thread.sleep(SMALL_DELAY_MS);
606	<	assertSame(one, q.take());
607	<	}});
603	>	executor.execute(new CheckedRunnable() {
604	>	public void realRun() throws InterruptedException {
605	>	threadsStarted.await();
606	>	long startTime = System.nanoTime();
607	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
608	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
609	>	}});
610
611	<	joinPool(executor);
611	>	executor.execute(new CheckedRunnable() {
612	>	public void realRun() throws InterruptedException {
613	>	threadsStarted.await();
614	>	assertSame(one, q.take());
615	>	checkEmpty(q);
616	>	}});
617	>	}
618		}
619
620		/**
#	Line 676 | Line 622 | public class LinkedTransferQueueTest ext
622		*/
623		public void testPollInExecutor() {
624		final LinkedTransferQueue q = new LinkedTransferQueue();
625	<	ExecutorService executor = Executors.newFixedThreadPool(2);
625	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
626	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
627	>	try (PoolCleaner cleaner = cleaner(executor)) {
628
629	<	executor.execute(new CheckedRunnable() {
630	<	public void realRun() throws InterruptedException {
631	<	assertNull(q.poll());
632	<	assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
633	<	assertTrue(q.isEmpty());
634	<	}});
635	<
636	<	executor.execute(new CheckedRunnable() {
637	<	public void realRun() throws InterruptedException {
690	<	Thread.sleep(SMALL_DELAY_MS);
691	<	q.put(one);
692	<	}});
629	>	executor.execute(new CheckedRunnable() {
630	>	public void realRun() throws InterruptedException {
631	>	assertNull(q.poll());
632	>	threadsStarted.await();
633	>	long startTime = System.nanoTime();
634	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
635	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
636	>	checkEmpty(q);
637	>	}});
638
639	<	joinPool(executor);
639	>	executor.execute(new CheckedRunnable() {
640	>	public void realRun() throws InterruptedException {
641	>	threadsStarted.await();
642	>	q.put(one);
643	>	}});
644	>	}
645		}
646
647		/**
648	<	* A deserialized serialized queue has same elements in same order
648	>	* A deserialized/reserialized queue has same elements in same order
649		*/
650		public void testSerialization() throws Exception {
651	<	LinkedTransferQueue q = populatedQueue(SIZE);
652	<
703	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
704	<	ObjectOutputStream out
705	<	= new ObjectOutputStream(new BufferedOutputStream(bout));
706	<	out.writeObject(q);
707	<	out.close();
651	>	Queue x = populatedQueue(SIZE);
652	>	Queue y = serialClone(x);
653
654	<	ByteArrayInputStream bin
655	<	= new ByteArrayInputStream(bout.toByteArray());
656	<	ObjectInputStream in
657	<	= new ObjectInputStream(new BufferedInputStream(bin));
658	<	LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
659	<
660	<	assertEquals(q.size(), r.size());
716	<	while (!q.isEmpty()) {
717	<	assertEquals(q.remove(), r.remove());
654	>	assertNotSame(y, x);
655	>	assertEquals(x.size(), y.size());
656	>	assertEquals(x.toString(), y.toString());
657	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
658	>	while (!x.isEmpty()) {
659	>	assertFalse(y.isEmpty());
660	>	assertEquals(x.remove(), y.remove());
661		}
662	<	}
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) {}
662	>	assertTrue(y.isEmpty());
663		}
664
665		/**
#	Line 747 | Line 669 | public class LinkedTransferQueueTest ext
669		LinkedTransferQueue q = populatedQueue(SIZE);
670		ArrayList l = new ArrayList();
671		q.drainTo(l);
672	<	assertEquals(q.size(), 0);
673	<	assertEquals(l.size(), SIZE);
672	>	assertEquals(0, q.size());
673	>	assertEquals(SIZE, l.size());
674		for (int i = 0; i < SIZE; ++i) {
675	<	assertEquals(l.get(i), i);
675	>	assertEquals(i, l.get(i));
676		}
677		q.add(zero);
678		q.add(one);
#	Line 759 | Line 681 | public class LinkedTransferQueueTest ext
681		assertTrue(q.contains(one));
682		l.clear();
683		q.drainTo(l);
684	<	assertEquals(q.size(), 0);
685	<	assertEquals(l.size(), 2);
684	>	assertEquals(0, q.size());
685	>	assertEquals(2, l.size());
686		for (int i = 0; i < 2; ++i) {
687	<	assertEquals(l.get(i), i);
687	>	assertEquals(i, l.get(i));
688		}
689		}
690
#	Line 778 | Line 700 | public class LinkedTransferQueueTest ext
700		ArrayList l = new ArrayList();
701		q.drainTo(l);
702		assertTrue(l.size() >= SIZE);
703	<	for (int i = 0; i < SIZE; ++i) {
704	<	assertEquals(l.get(i), i);
705	<	}
784	<	t.join();
703	>	for (int i = 0; i < SIZE; ++i)
704	>	assertEquals(i, l.get(i));
705	>	awaitTermination(t);
706		assertTrue(q.size() + l.size() >= SIZE);
707		}
708
709		/**
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	–	/**
710		* drainTo(c, n) empties first min(n, size) elements of queue into c
711		*/
712		public void testDrainToN() {
#	Line 819 | Line 718 | public class LinkedTransferQueueTest ext
718		ArrayList l = new ArrayList();
719		q.drainTo(l, i);
720		int k = (i < SIZE) ? i : SIZE;
721	<	assertEquals(l.size(), k);
722	<	assertEquals(q.size(), SIZE - k);
723	<	for (int j = 0; j < k; ++j) {
724	<	assertEquals(l.get(j), j);
725	<	}
827	<	while (q.poll() != null)
828	<	;
721	>	assertEquals(k, l.size());
722	>	assertEquals(SIZE - k, q.size());
723	>	for (int j = 0; j < k; ++j)
724	>	assertEquals(j, l.get(j));
725	>	do {} while (q.poll() != null);
726		}
727		}
728
#	Line 835 | Line 732 | public class LinkedTransferQueueTest ext
732		*/
733		public void testWaitingConsumer() throws InterruptedException {
734		final LinkedTransferQueue q = new LinkedTransferQueue();
735	<	assertEquals(q.getWaitingConsumerCount(), 0);
735	>	assertEquals(0, q.getWaitingConsumerCount());
736		assertFalse(q.hasWaitingConsumer());
737	+	final CountDownLatch threadStarted = new CountDownLatch(1);
738
739		Thread t = newStartedThread(new CheckedRunnable() {
740		public void realRun() throws InterruptedException {
741	<	Thread.sleep(SMALL_DELAY_MS);
742	<	assertTrue(q.hasWaitingConsumer());
743	<	assertEquals(q.getWaitingConsumerCount(), 1);
744	<	assertTrue(q.offer(one));
741	>	threadStarted.countDown();
742	>	long startTime = System.nanoTime();
743	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
744	>	assertEquals(0, q.getWaitingConsumerCount());
745		assertFalse(q.hasWaitingConsumer());
746	<	assertEquals(q.getWaitingConsumerCount(), 0);
746	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
747		}});
748
749	<	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
750	<	assertEquals(q.getWaitingConsumerCount(), 0);
749	>	threadStarted.await();
750	>	Callable<Boolean> oneConsumer
751	>	= new Callable<Boolean>() { public Boolean call() {
752	>	return q.hasWaitingConsumer()
753	>	&& q.getWaitingConsumerCount() == 1; }};
754	>	waitForThreadToEnterWaitState(t, oneConsumer);
755	>
756	>	assertTrue(q.offer(one));
757	>	assertEquals(0, q.getWaitingConsumerCount());
758		assertFalse(q.hasWaitingConsumer());
759	<	t.join();
759	>
760	>	awaitTermination(t);
761		}
762
763		/**
#	Line 866 | Line 772 | public class LinkedTransferQueueTest ext
772		}
773
774		/**
775	<	* transfer waits until a poll occurs. The transfered element
776	<	* is returned by this associated poll.
775	>	* transfer waits until a poll occurs. The transferred element
776	>	* is returned by the associated poll.
777		*/
778		public void testTransfer2() throws InterruptedException {
779	<	final LinkedTransferQueue<Integer> q
780	<	= new LinkedTransferQueue<Integer>();
779	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
780	>	final CountDownLatch threadStarted = new CountDownLatch(1);
781
782		Thread t = newStartedThread(new CheckedRunnable() {
783		public void realRun() throws InterruptedException {
784	<	q.transfer(SIZE);
785	<	assertTrue(q.isEmpty());
784	>	threadStarted.countDown();
785	>	q.transfer(five);
786	>	checkEmpty(q);
787		}});
788
789	<	Thread.sleep(SHORT_DELAY_MS);
790	<	assertEquals(1, q.size());
791	<	assertEquals(SIZE, (int) q.poll());
792	<	assertTrue(q.isEmpty());
793	<	t.join();
789	>	threadStarted.await();
790	>	Callable<Boolean> oneElement
791	>	= new Callable<Boolean>() { public Boolean call() {
792	>	return !q.isEmpty() && q.size() == 1; }};
793	>	waitForThreadToEnterWaitState(t, oneElement);
794	>
795	>	assertSame(five, q.poll());
796	>	checkEmpty(q);
797	>	awaitTermination(t);
798		}
799
800		/**
801		* transfer waits until a poll occurs, and then transfers in fifo order
802		*/
803		public void testTransfer3() throws InterruptedException {
804	<	final LinkedTransferQueue<Integer> q
894	<	= new LinkedTransferQueue<Integer>();
804	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
805
806		Thread first = newStartedThread(new CheckedRunnable() {
807		public void realRun() throws InterruptedException {
808	<	Integer i = SIZE + 1;
809	<	q.transfer(i);
900	<	assertTrue(!q.contains(i));
808	>	q.transfer(four);
809	>	assertFalse(q.contains(four));
810		assertEquals(1, q.size());
811		}});
812
813		Thread interruptedThread = newStartedThread(
814		new CheckedInterruptedRunnable() {
815		public void realRun() throws InterruptedException {
816	<	while (q.size() == 0)
816	>	while (q.isEmpty())
817		Thread.yield();
818	<	q.transfer(SIZE);
818	>	q.transfer(five);
819		}});
820
821		while (q.size() < 2)
822		Thread.yield();
823		assertEquals(2, q.size());
824	<	assertEquals(SIZE + 1, (int) q.poll());
824	>	assertSame(four, q.poll());
825		first.join();
826		assertEquals(1, q.size());
827		interruptedThread.interrupt();
828		interruptedThread.join();
829	<	assertEquals(0, q.size());
921	<	assertTrue(q.isEmpty());
829	>	checkEmpty(q);
830		}
831
832		/**
#	Line 935 | Line 843 | public class LinkedTransferQueueTest ext
843		assertSame(three, q.poll());
844		}});
845
846	<	Thread.sleep(SHORT_DELAY_MS);
846	>	while (q.isEmpty())
847	>	Thread.yield();
848	>	assertFalse(q.isEmpty());
849	>	assertEquals(1, q.size());
850		assertTrue(q.offer(three));
851		assertSame(four, q.poll());
852	<	t.join();
852	>	awaitTermination(t);
853		}
854
855		/**
856	<	* transfer waits until a take occurs. The transfered element
857	<	* is returned by this associated take.
856	>	* transfer waits until a take occurs. The transferred element
857	>	* is returned by the associated take.
858		*/
859		public void testTransfer5() throws InterruptedException {
860	<	final LinkedTransferQueue<Integer> q
950	<	= new LinkedTransferQueue<Integer>();
860	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
861
862		Thread t = newStartedThread(new CheckedRunnable() {
863		public void realRun() throws InterruptedException {
864	<	q.transfer(SIZE);
864	>	q.transfer(four);
865		checkEmpty(q);
866		}});
867
868	<	Thread.sleep(SHORT_DELAY_MS);
869	<	assertEquals(SIZE, (int) q.take());
868	>	while (q.isEmpty())
869	>	Thread.yield();
870	>	assertFalse(q.isEmpty());
871	>	assertEquals(1, q.size());
872	>	assertSame(four, q.take());
873		checkEmpty(q);
874	<	t.join();
874	>	awaitTermination(t);
875		}
876
877		/**
878		* tryTransfer(null) throws NullPointerException
879		*/
880		public void testTryTransfer1() {
881	+	final LinkedTransferQueue q = new LinkedTransferQueue();
882		try {
969	–	final LinkedTransferQueue q = new LinkedTransferQueue();
883		q.tryTransfer(null);
884		shouldThrow();
885		} catch (NullPointerException success) {}
#	Line 996 | Line 909 | public class LinkedTransferQueueTest ext
909		while (! q.hasWaitingConsumer())
910		Thread.yield();
911		assertTrue(q.hasWaitingConsumer());
912	<	assertTrue(q.isEmpty());
1000	<	assertEquals(q.size(), 0);
912	>	checkEmpty(q);
913		assertTrue(q.tryTransfer(hotPotato));
914		}});
915
916	<	assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
916	>	long startTime = System.nanoTime();
917	>	assertSame(hotPotato, q.poll(LONG_DELAY_MS, MILLISECONDS));
918	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
919		checkEmpty(q);
920	<	t.join();
920	>	awaitTermination(t);
921		}
922
923		/**
#	Line 1019 | Line 933 | public class LinkedTransferQueueTest ext
933		while (! q.hasWaitingConsumer())
934		Thread.yield();
935		assertTrue(q.hasWaitingConsumer());
936	<	assertTrue(q.isEmpty());
1023	<	assertEquals(q.size(), 0);
936	>	checkEmpty(q);
937		assertTrue(q.tryTransfer(hotPotato));
938		}});
939
940		assertSame(q.take(), hotPotato);
941		checkEmpty(q);
942	<	t.join();
942	>	awaitTermination(t);
943		}
944
945		/**
946	<	* tryTransfer waits the amount given if interrupted, and
1034	<	* throws interrupted exception
946	>	* tryTransfer blocks interruptibly if no takers
947		*/
948		public void testTryTransfer5() throws InterruptedException {
949		final LinkedTransferQueue q = new LinkedTransferQueue();
950	+	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
951	+	assertTrue(q.isEmpty());
952
953	<	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
953	>	Thread t = newStartedThread(new CheckedRunnable() {
954		public void realRun() throws InterruptedException {
955	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
955	>	long startTime = System.nanoTime();
956	>	Thread.currentThread().interrupt();
957	>	try {
958	>	q.tryTransfer(new Object(), randomTimeout(), randomTimeUnit());
959	>	shouldThrow();
960	>	} catch (InterruptedException success) {}
961	>	assertFalse(Thread.interrupted());
962	>
963	>	pleaseInterrupt.countDown();
964	>	try {
965	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
966	>	shouldThrow();
967	>	} catch (InterruptedException success) {}
968	>	assertFalse(Thread.interrupted());
969	>
970	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
971		}});
972
973	<	Thread.sleep(SMALL_DELAY_MS);
974	<	toInterrupt.interrupt();
975	<	toInterrupt.join();
973	>	await(pleaseInterrupt);
974	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
975	>	t.interrupt();
976	>	awaitTermination(t);
977	>	checkEmpty(q);
978		}
979
980		/**
981	<	* tryTransfer gives up after the timeout and return false
981	>	* tryTransfer gives up after the timeout and returns false
982		*/
983		public void testTryTransfer6() throws InterruptedException {
984		final LinkedTransferQueue q = new LinkedTransferQueue();
985
986		Thread t = newStartedThread(new CheckedRunnable() {
987		public void realRun() throws InterruptedException {
988	<	long t0 = System.nanoTime();
988	>	long startTime = System.nanoTime();
989		assertFalse(q.tryTransfer(new Object(),
990	<	SHORT_DELAY_MS, MILLISECONDS));
991	<	long elapsed = NANOSECONDS.toMillis(System.nanoTime() - t0);
992	<	assertTrue(elapsed >= SHORT_DELAY_MS);
990	>	timeoutMillis(), MILLISECONDS));
991	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
992	>	checkEmpty(q);
993		}});
994
995	<	checkEmpty(q);
1065	<	awaitTermination(t, MEDIUM_DELAY_MS);
995	>	awaitTermination(t);
996		checkEmpty(q);
997		}
998
#	Line 1076 | Line 1006 | public class LinkedTransferQueueTest ext
1006
1007		Thread t = newStartedThread(new CheckedRunnable() {
1008		public void realRun() throws InterruptedException {
1009	<	assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
1010	<	assertTrue(q.isEmpty());
1009	>	long startTime = System.nanoTime();
1010	>	assertTrue(q.tryTransfer(five, LONG_DELAY_MS, MILLISECONDS));
1011	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1012	>	checkEmpty(q);
1013		}});
1014
1015	<	Thread.sleep(SHORT_DELAY_MS);
1015	>	while (q.size() != 2)
1016	>	Thread.yield();
1017		assertEquals(2, q.size());
1018		assertSame(four, q.poll());
1019		assertSame(five, q.poll());
1020		checkEmpty(q);
1021	<	t.join();
1021	>	awaitTermination(t);
1022		}
1023
1024		/**
1025	<	* tryTransfer attempts to enqueue into the q and fails returning
1026	<	* false not enqueueing and the successive poll is null
1025	>	* tryTransfer attempts to enqueue into the queue and fails
1026	>	* returning false not enqueueing and the successive poll is null
1027		*/
1028		public void testTryTransfer8() throws InterruptedException {
1029		final LinkedTransferQueue q = new LinkedTransferQueue();
1030		assertTrue(q.offer(four));
1031		assertEquals(1, q.size());
1032	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1032	>	long startTime = System.nanoTime();
1033	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
1034	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
1035		assertEquals(1, q.size());
1036		assertSame(four, q.poll());
1037		assertNull(q.poll());
#	Line 1104 | Line 1039 | public class LinkedTransferQueueTest ext
1039		}
1040
1041		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1042	<	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1043	<	assertTrue(q.isEmpty());
1042	>	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
1043	>	checkEmpty(q);
1044		for (int i = 0; i < n; i++) {
1045		assertEquals(i, q.size());
1046		assertTrue(q.offer(i));
#	Line 1114 | Line 1049 | public class LinkedTransferQueueTest ext
1049		assertFalse(q.isEmpty());
1050		return q;
1051		}
1052	+
1053	+	/**
1054	+	* remove(null), contains(null) always return false
1055	+	*/
1056	+	public void testNeverContainsNull() {
1057	+	Collection<?>[] qs = {
1058	+	new LinkedTransferQueue<Object>(),
1059	+	populatedQueue(2),
1060	+	};
1061	+
1062	+	for (Collection<?> q : qs) {
1063	+	assertFalse(q.contains(null));
1064	+	assertFalse(q.remove(null));
1065	+	}
1066	+	}
1067		}

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