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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.32 by jsr166, Fri Oct 29 06:21:16 2010 UTC vs.
Revision 1.76 by jsr166, Sun May 14 00:48:20 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	<	return newTestSuite(LinkedTransferQueueTest.class,
40	<	new Generic().testSuite());
41	<	}
42	<
43	<	void checkEmpty(BlockingQueue q) {
44	<	try {
45	<	assertTrue(q.isEmpty());
46	<	assertEquals(0, q.size());
47	<	assertNull(q.peek());
48	<	assertNull(q.poll());
49	<	assertNull(q.poll(0, MILLISECONDS));
50	<	assertEquals(q.toString(), "[]");
51	<	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
52	<	assertFalse(q.iterator().hasNext());
53	<	try {
54	<	q.element();
55	<	shouldThrow();
56	<	} catch (NoSuchElementException success) {}
57	<	try {
58	<	q.iterator().next();
59	<	shouldThrow();
60	<	} catch (NoSuchElementException success) {}
61	<	try {
62	<	q.remove();
63	<	shouldThrow();
64	<	} catch (NoSuchElementException success) {}
65	<	} catch (InterruptedException ie) {
66	<	threadUnexpectedException(ie);
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	+	CollectionTest.testSuite(new Implementation()));
49		}
50
51		/**
#	Line 92 | 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];
97	<	new LinkedTransferQueue(Arrays.asList(ints));
78	>	new LinkedTransferQueue(elements);
79		shouldThrow();
80		} catch (NullPointerException success) {}
81		}
#	Line 104 | 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];
109	<	for (int i = 0; i < SIZE - 1; ++i) {
110	<	ints[i] = i;
111	<	}
112	<	new LinkedTransferQueue(Arrays.asList(ints));
93	>	new LinkedTransferQueue(elements);
94		shouldThrow();
95		} catch (NullPointerException success) {}
96		}
#	Line 142 | 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		/**
159	–	* offer(null) throws NullPointerException
160	–	*/
161	–	public void testOfferNull() {
162	–	try {
163	–	LinkedTransferQueue q = new LinkedTransferQueue();
164	–	q.offer(null);
165	–	shouldThrow();
166	–	} catch (NullPointerException success) {}
167	–	}
168	–
169	–	/**
170	–	* add(null) throws NullPointerException
171	–	*/
172	–	public void testAddNull() {
173	–	try {
174	–	LinkedTransferQueue q = new LinkedTransferQueue();
175	–	q.add(null);
176	–	shouldThrow();
177	–	} catch (NullPointerException success) {}
178	–	}
179	–
180	–	/**
181	–	* addAll(null) throws NullPointerException
182	–	*/
183	–	public void testAddAll1() {
184	–	try {
185	–	LinkedTransferQueue q = new LinkedTransferQueue();
186	–	q.addAll(null);
187	–	shouldThrow();
188	–	} catch (NullPointerException success) {}
189	–	}
190	–
191	–	/**
140		* addAll(this) throws IllegalArgumentException
141		*/
142		public void testAddAllSelf() {
143	+	LinkedTransferQueue q = populatedQueue(SIZE);
144		try {
196	–	LinkedTransferQueue q = populatedQueue(SIZE);
145		q.addAll(q);
146		shouldThrow();
147		} catch (IllegalArgumentException success) {}
148		}
149
150		/**
203	–	* addAll of a collection with null elements throws NullPointerException
204	–	*/
205	–	public void testAddAll2() {
206	–	try {
207	–	LinkedTransferQueue q = new LinkedTransferQueue();
208	–	Integer[] ints = new Integer[SIZE];
209	–	q.addAll(Arrays.asList(ints));
210	–	shouldThrow();
211	–	} catch (NullPointerException success) {}
212	–	}
213	–
214	–	/**
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 {
220	–	LinkedTransferQueue q = new LinkedTransferQueue();
221	–	Integer[] ints = new Integer[SIZE];
222	–	for (int i = 0; i < SIZE - 1; ++i) {
223	–	ints[i] = i;
224	–	}
160		q.addAll(Arrays.asList(ints));
161		shouldThrow();
162		} catch (NullPointerException success) {}
#	Line 245 | Line 180 | public class LinkedTransferQueueTest ext
180		}
181
182		/**
248	–	* put(null) throws NullPointerException
249	–	*/
250	–	public void testPutNull() throws InterruptedException {
251	–	try {
252	–	LinkedTransferQueue q = new LinkedTransferQueue();
253	–	q.put(null);
254	–	shouldThrow();
255	–	} catch (NullPointerException success) {}
256	–	}
257	–
258	–	/**
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 281 | Line 205 | public class LinkedTransferQueueTest ext
205		* take removes existing elements until empty, then blocks interruptibly
206		*/
207		public void testBlockingTake() throws InterruptedException {
208	<	final BlockingQueue<Integer> q = populatedQueue(SIZE);
209	<	final CountDownLatch aboutToWait = new CountDownLatch(1);
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	<	}
291	<	aboutToWait.countDown();
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	<	aboutToWait.await();
230	<	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
229	>	await(pleaseInterrupt);
230	>	assertThreadBlocks(t, Thread.State.WAITING);
231		t.interrupt();
232	<	awaitTermination(t, MEDIUM_DELAY_MS);
302	<	checkEmpty(q);
232	>	awaitTermination(t);
233		}
234
235		/**
#	Line 331 | Line 261 | public class LinkedTransferQueueTest ext
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();
266	<	assertEquals(i, (int) q.poll(SMALL_DELAY_MS, MILLISECONDS));
267	<	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
268	<	}
269	<	long t0 = System.nanoTime();
270	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
271	<	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
264	>	long startTime = System.nanoTime();
265	>	for (int i = 0; i < SIZE; ++i)
266	>	assertEquals(i, (int) q.poll(LONG_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 348 | Line 278 | public class LinkedTransferQueueTest ext
278		*/
279		public void testInterruptedTimedPoll() throws InterruptedException {
280		final BlockingQueue<Integer> q = populatedQueue(SIZE);
281	<	final CountDownLatch aboutToWait = new CountDownLatch(1);
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	<	assertTrue(millisElapsedSince(t0) < SHORT_DELAY_MS);
288	<	}
359	<	aboutToWait.countDown();
287	>
288	>	pleaseInterrupt.countDown();
289		try {
290	<	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
290	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
291		shouldThrow();
292		} catch (InterruptedException success) {}
293	+	assertFalse(Thread.interrupted());
294	+
295	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
296		}});
297
298	<	aboutToWait.await();
299	<	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
298	>	await(pleaseInterrupt);
299	>	assertThreadBlocks(t, Thread.State.TIMED_WAITING);
300		t.interrupt();
301	<	awaitTermination(t, MEDIUM_DELAY_MS);
301	>	awaitTermination(t);
302		checkEmpty(q);
303		}
304
#	Line 378 | Line 310 | public class LinkedTransferQueueTest ext
310		final BlockingQueue<Integer> q = populatedQueue(SIZE);
311		Thread t = newStartedThread(new CheckedRunnable() {
312		public void realRun() throws InterruptedException {
313	+	long startTime = System.nanoTime();
314		Thread.currentThread().interrupt();
315	<	for (int i = 0; i < SIZE; ++i) {
383	<	long t0 = System.nanoTime();
315	>	for (int i = 0; i < SIZE; ++i)
316		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
385	–	assertTrue(millisElapsedSince(t0) < SHORT_DELAY_MS);
386	–	}
317		try {
318	<	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
318	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
319		shouldThrow();
320		} catch (InterruptedException success) {}
321	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
322		}});
323
324	<	awaitTermination(t, MEDIUM_DELAY_MS);
324	>	awaitTermination(t);
325		checkEmpty(q);
326		}
327
#	Line 441 | Line 372 | public class LinkedTransferQueueTest ext
372		}
373
374		/**
444	–	* remove(x) removes x and returns true if present
445	–	*/
446	–	public void testRemoveElement() throws InterruptedException {
447	–	LinkedTransferQueue q = populatedQueue(SIZE);
448	–	for (int i = 1; i < SIZE; i += 2) {
449	–	assertTrue(q.remove(i));
450	–	}
451	–	for (int i = 0; i < SIZE; i += 2) {
452	–	assertTrue(q.remove(i));
453	–	assertFalse(q.remove(i + 1));
454	–	}
455	–	checkEmpty(q);
456	–	}
457	–
458	–	/**
375		* An add following remove(x) succeeds
376		*/
377		public void testRemoveElementAndAdd() throws InterruptedException {
#	Line 501 | Line 417 | public class LinkedTransferQueueTest ext
417		*/
418		public void testContainsAll() {
419		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
420	<	LinkedTransferQueue<Integer> p = new LinkedTransferQueue<Integer>();
420	>	LinkedTransferQueue<Integer> p = new LinkedTransferQueue<>();
421		for (int i = 0; i < SIZE; ++i) {
422		assertTrue(q.containsAll(p));
423		assertFalse(p.containsAll(q));
#	Line 547 | Line 463 | public class LinkedTransferQueueTest ext
463		}
464
465		/**
466	<	* toArray() contains all elements
466	>	* toArray() contains all elements in FIFO order
467		*/
468	<	public void testToArray() throws InterruptedException {
468	>	public void testToArray() {
469		LinkedTransferQueue q = populatedQueue(SIZE);
470		Object[] o = q.toArray();
471		for (int i = 0; i < o.length; i++) {
472	<	assertEquals(o[i], q.take());
472	>	assertSame(o[i], q.poll());
473		}
474		}
475
476		/**
477	<	* toArray(a) contains all elements
477	>	* toArray(a) contains all elements in FIFO order
478		*/
479	<	public void testToArray2() throws InterruptedException {
479	>	public void testToArray2() {
480		LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
481		Integer[] ints = new Integer[SIZE];
482	<	ints = q.toArray(ints);
482	>	Integer[] array = q.toArray(ints);
483	>	assertSame(ints, array);
484		for (int i = 0; i < ints.length; i++) {
485	<	assertEquals(ints[i], q.take());
485	>	assertSame(ints[i], q.poll());
486		}
487		}
488
489		/**
490	<	* toArray(null) throws NullPointerException
574	<	*/
575	<	public void testToArray_BadArg() {
576	<	LinkedTransferQueue q = populatedQueue(SIZE);
577	<	try {
578	<	Object o[] = q.toArray(null);
579	<	shouldThrow();
580	<	} catch (NullPointerException success) {}
581	<	}
582	<
583	<	/**
584	<	* toArray(incompatible array type) throws CCE
490	>	* toArray(incompatible array type) throws ArrayStoreException
491		*/
492		public void testToArray1_BadArg() {
493		LinkedTransferQueue q = populatedQueue(SIZE);
494		try {
495	<	Object o[] = q.toArray(new String[10]);
495	>	q.toArray(new String[10]);
496		shouldThrow();
497		} catch (ArrayStoreException success) {}
498		}
#	Line 597 | Line 503 | public class LinkedTransferQueueTest ext
503		public void testIterator() throws InterruptedException {
504		LinkedTransferQueue q = populatedQueue(SIZE);
505		Iterator it = q.iterator();
506	<	int i = 0;
507	<	while (it.hasNext()) {
508	<	assertEquals(it.next(), i++);
509	<	}
506	>	int i;
507	>	for (i = 0; it.hasNext(); i++)
508	>	assertTrue(q.contains(it.next()));
509	>	assertEquals(i, SIZE);
510	>	assertIteratorExhausted(it);
511	>
512	>	it = q.iterator();
513	>	for (i = 0; it.hasNext(); i++)
514	>	assertEquals(it.next(), q.take());
515		assertEquals(i, SIZE);
516	+	assertIteratorExhausted(it);
517	+	}
518	+
519	+	/**
520	+	* iterator of empty collection has no elements
521	+	*/
522	+	public void testEmptyIterator() {
523	+	assertIteratorExhausted(new LinkedTransferQueue().iterator());
524		}
525
526		/**
#	Line 627 | Line 546 | public class LinkedTransferQueueTest ext
546		* iterator ordering is FIFO
547		*/
548		public void testIteratorOrdering() {
549	<	final LinkedTransferQueue<Integer> q
631	<	= new LinkedTransferQueue<Integer>();
549	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
550		assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
551		q.add(one);
552		q.add(two);
#	Line 663 | Line 581 | public class LinkedTransferQueueTest ext
581		LinkedTransferQueue q = populatedQueue(SIZE);
582		String s = q.toString();
583		for (int i = 0; i < SIZE; ++i) {
584	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
584	>	assertTrue(s.contains(String.valueOf(i)));
585		}
586		}
587
#	Line 672 | Line 590 | public class LinkedTransferQueueTest ext
590		*/
591		public void testOfferInExecutor() {
592		final LinkedTransferQueue q = new LinkedTransferQueue();
593	<	final CountDownLatch threadsStarted = new CountDownLatch(2);
594	<	ExecutorService executor = Executors.newFixedThreadPool(2);
595	<
678	<	executor.execute(new CheckedRunnable() {
679	<	public void realRun() throws InterruptedException {
680	<	threadsStarted.countDown();
681	<	threadsStarted.await();
682	<	assertTrue(q.offer(one, MEDIUM_DELAY_MS, MILLISECONDS));
683	<	}});
593	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
594	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
595	>	try (PoolCleaner cleaner = cleaner(executor)) {
596
597	<	executor.execute(new CheckedRunnable() {
598	<	public void realRun() throws InterruptedException {
599	<	threadsStarted.countDown();
600	<	threadsStarted.await();
601	<	assertSame(one, q.take());
602	<	checkEmpty(q);
603	<	}});
597	>	executor.execute(new CheckedRunnable() {
598	>	public void realRun() throws InterruptedException {
599	>	threadsStarted.await();
600	>	long startTime = System.nanoTime();
601	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
602	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
603	>	}});
604
605	<	joinPool(executor);
605	>	executor.execute(new CheckedRunnable() {
606	>	public void realRun() throws InterruptedException {
607	>	threadsStarted.await();
608	>	assertSame(one, q.take());
609	>	checkEmpty(q);
610	>	}});
611	>	}
612		}
613
614		/**
#	Line 698 | Line 616 | public class LinkedTransferQueueTest ext
616		*/
617		public void testPollInExecutor() {
618		final LinkedTransferQueue q = new LinkedTransferQueue();
619	<	final CountDownLatch threadsStarted = new CountDownLatch(2);
620	<	ExecutorService executor = Executors.newFixedThreadPool(2);
619	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
620	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
621	>	try (PoolCleaner cleaner = cleaner(executor)) {
622
623	<	executor.execute(new CheckedRunnable() {
624	<	public void realRun() throws InterruptedException {
625	<	assertNull(q.poll());
626	<	threadsStarted.countDown();
627	<	threadsStarted.await();
628	<	assertSame(one, q.poll(SMALL_DELAY_MS, MILLISECONDS));
629	<	checkEmpty(q);
630	<	}});
631	<
713	<	executor.execute(new CheckedRunnable() {
714	<	public void realRun() throws InterruptedException {
715	<	threadsStarted.countDown();
716	<	threadsStarted.await();
717	<	q.put(one);
718	<	}});
623	>	executor.execute(new CheckedRunnable() {
624	>	public void realRun() throws InterruptedException {
625	>	assertNull(q.poll());
626	>	threadsStarted.await();
627	>	long startTime = System.nanoTime();
628	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
629	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
630	>	checkEmpty(q);
631	>	}});
632
633	<	joinPool(executor);
633	>	executor.execute(new CheckedRunnable() {
634	>	public void realRun() throws InterruptedException {
635	>	threadsStarted.await();
636	>	q.put(one);
637	>	}});
638	>	}
639		}
640
641		/**
642		* A deserialized serialized queue has same elements in same order
643		*/
644		public void testSerialization() throws Exception {
645	<	LinkedTransferQueue q = populatedQueue(SIZE);
646	<
729	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
730	<	ObjectOutputStream out
731	<	= new ObjectOutputStream(new BufferedOutputStream(bout));
732	<	out.writeObject(q);
733	<	out.close();
734	<
735	<	ByteArrayInputStream bin
736	<	= new ByteArrayInputStream(bout.toByteArray());
737	<	ObjectInputStream in
738	<	= new ObjectInputStream(new BufferedInputStream(bin));
739	<	LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
645	>	Queue x = populatedQueue(SIZE);
646	>	Queue y = serialClone(x);
647
648	<	assertEquals(q.size(), r.size());
649	<	assertEquals(q.toString(), r.toString());
650	<	assertTrue(Arrays.equals(q.toArray(), r.toArray()));
651	<	while (!q.isEmpty()) {
652	<	assertEquals(q.remove(), r.remove());
648	>	assertNotSame(y, x);
649	>	assertEquals(x.size(), y.size());
650	>	assertEquals(x.toString(), y.toString());
651	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
652	>	while (!x.isEmpty()) {
653	>	assertFalse(y.isEmpty());
654	>	assertEquals(x.remove(), y.remove());
655		}
656	<	}
748	<
749	<	/**
750	<	* drainTo(null) throws NullPointerException
751	<	*/
752	<	public void testDrainToNull() {
753	<	LinkedTransferQueue q = populatedQueue(SIZE);
754	<	try {
755	<	q.drainTo(null);
756	<	shouldThrow();
757	<	} catch (NullPointerException success) {}
758	<	}
759	<
760	<	/**
761	<	* drainTo(this) throws IllegalArgumentException
762	<	*/
763	<	public void testDrainToSelf() {
764	<	LinkedTransferQueue q = populatedQueue(SIZE);
765	<	try {
766	<	q.drainTo(q);
767	<	shouldThrow();
768	<	} catch (IllegalArgumentException success) {}
656	>	assertTrue(y.isEmpty());
657		}
658
659		/**
#	Line 775 | Line 663 | public class LinkedTransferQueueTest ext
663		LinkedTransferQueue q = populatedQueue(SIZE);
664		ArrayList l = new ArrayList();
665		q.drainTo(l);
666	<	assertEquals(q.size(), 0);
667	<	assertEquals(l.size(), SIZE);
666	>	assertEquals(0, q.size());
667	>	assertEquals(SIZE, l.size());
668		for (int i = 0; i < SIZE; ++i) {
669	<	assertEquals(l.get(i), i);
669	>	assertEquals(i, l.get(i));
670		}
671		q.add(zero);
672		q.add(one);
#	Line 787 | Line 675 | public class LinkedTransferQueueTest ext
675		assertTrue(q.contains(one));
676		l.clear();
677		q.drainTo(l);
678	<	assertEquals(q.size(), 0);
679	<	assertEquals(l.size(), 2);
678	>	assertEquals(0, q.size());
679	>	assertEquals(2, l.size());
680		for (int i = 0; i < 2; ++i) {
681	<	assertEquals(l.get(i), i);
681	>	assertEquals(i, l.get(i));
682		}
683		}
684
#	Line 806 | Line 694 | public class LinkedTransferQueueTest ext
694		ArrayList l = new ArrayList();
695		q.drainTo(l);
696		assertTrue(l.size() >= SIZE);
697	<	for (int i = 0; i < SIZE; ++i) {
698	<	assertEquals(l.get(i), i);
699	<	}
812	<	awaitTermination(t, MEDIUM_DELAY_MS);
697	>	for (int i = 0; i < SIZE; ++i)
698	>	assertEquals(i, l.get(i));
699	>	awaitTermination(t);
700		assertTrue(q.size() + l.size() >= SIZE);
701		}
702
703		/**
817	–	* drainTo(null, n) throws NullPointerException
818	–	*/
819	–	public void testDrainToNullN() {
820	–	LinkedTransferQueue q = populatedQueue(SIZE);
821	–	try {
822	–	q.drainTo(null, SIZE);
823	–	shouldThrow();
824	–	} catch (NullPointerException success) {}
825	–	}
826	–
827	–	/**
828	–	* drainTo(this, n) throws IllegalArgumentException
829	–	*/
830	–	public void testDrainToSelfN() {
831	–	LinkedTransferQueue q = populatedQueue(SIZE);
832	–	try {
833	–	q.drainTo(q, SIZE);
834	–	shouldThrow();
835	–	} catch (IllegalArgumentException success) {}
836	–	}
837	–
838	–	/**
704		* drainTo(c, n) empties first min(n, size) elements of queue into c
705		*/
706		public void testDrainToN() {
#	Line 847 | Line 712 | public class LinkedTransferQueueTest ext
712		ArrayList l = new ArrayList();
713		q.drainTo(l, i);
714		int k = (i < SIZE) ? i : SIZE;
715	<	assertEquals(l.size(), k);
716	<	assertEquals(q.size(), SIZE - k);
717	<	for (int j = 0; j < k; ++j) {
718	<	assertEquals(l.get(j), j);
719	<	}
855	<	while (q.poll() != null)
856	<	;
715	>	assertEquals(k, l.size());
716	>	assertEquals(SIZE - k, q.size());
717	>	for (int j = 0; j < k; ++j)
718	>	assertEquals(j, l.get(j));
719	>	do {} while (q.poll() != null);
720		}
721		}
722
#	Line 863 | Line 726 | public class LinkedTransferQueueTest ext
726		*/
727		public void testWaitingConsumer() throws InterruptedException {
728		final LinkedTransferQueue q = new LinkedTransferQueue();
729	<	assertEquals(q.getWaitingConsumerCount(), 0);
729	>	assertEquals(0, q.getWaitingConsumerCount());
730		assertFalse(q.hasWaitingConsumer());
731		final CountDownLatch threadStarted = new CountDownLatch(1);
732
733		Thread t = newStartedThread(new CheckedRunnable() {
734		public void realRun() throws InterruptedException {
735		threadStarted.countDown();
736	+	long startTime = System.nanoTime();
737		assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
738	<	assertEquals(q.getWaitingConsumerCount(), 0);
738	>	assertEquals(0, q.getWaitingConsumerCount());
739		assertFalse(q.hasWaitingConsumer());
740	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
741		}});
742
743		threadStarted.await();
744	<	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
745	<	assertEquals(q.getWaitingConsumerCount(), 1);
746	<	assertTrue(q.hasWaitingConsumer());
744	>	Callable<Boolean> oneConsumer
745	>	= new Callable<Boolean>() { public Boolean call() {
746	>	return q.hasWaitingConsumer()
747	>	&& q.getWaitingConsumerCount() == 1; }};
748	>	waitForThreadToEnterWaitState(t, oneConsumer);
749
750		assertTrue(q.offer(one));
751	<	assertEquals(q.getWaitingConsumerCount(), 0);
751	>	assertEquals(0, q.getWaitingConsumerCount());
752		assertFalse(q.hasWaitingConsumer());
753
754	<	awaitTermination(t, MEDIUM_DELAY_MS);
754	>	awaitTermination(t);
755		}
756
757		/**
#	Line 900 | Line 767 | public class LinkedTransferQueueTest ext
767
768		/**
769		* transfer waits until a poll occurs. The transfered element
770	<	* is returned by this associated poll.
770	>	* is returned by the associated poll.
771		*/
772		public void testTransfer2() throws InterruptedException {
773	<	final LinkedTransferQueue<Integer> q
907	<	= new LinkedTransferQueue<Integer>();
773	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
774		final CountDownLatch threadStarted = new CountDownLatch(1);
775
776		Thread t = newStartedThread(new CheckedRunnable() {
777		public void realRun() throws InterruptedException {
778		threadStarted.countDown();
779	<	q.transfer(SIZE);
779	>	q.transfer(five);
780		checkEmpty(q);
781		}});
782
783		threadStarted.await();
784	<	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
785	<	assertTrue(t.isAlive());
786	<	assertEquals(1, q.size());
787	<	assertEquals(SIZE, (int) q.poll());
784	>	Callable<Boolean> oneElement
785	>	= new Callable<Boolean>() { public Boolean call() {
786	>	return !q.isEmpty() && q.size() == 1; }};
787	>	waitForThreadToEnterWaitState(t, oneElement);
788	>
789	>	assertSame(five, q.poll());
790		checkEmpty(q);
791	<	awaitTermination(t, MEDIUM_DELAY_MS);
791	>	awaitTermination(t);
792		}
793
794		/**
795		* transfer waits until a poll occurs, and then transfers in fifo order
796		*/
797		public void testTransfer3() throws InterruptedException {
798	<	final LinkedTransferQueue<Integer> q
931	<	= new LinkedTransferQueue<Integer>();
798	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
799
800		Thread first = newStartedThread(new CheckedRunnable() {
801		public void realRun() throws InterruptedException {
802		q.transfer(four);
803	<	assertTrue(!q.contains(four));
803	>	assertFalse(q.contains(four));
804		assertEquals(1, q.size());
805		}});
806
#	Line 976 | Line 843 | public class LinkedTransferQueueTest ext
843		assertEquals(1, q.size());
844		assertTrue(q.offer(three));
845		assertSame(four, q.poll());
846	<	awaitTermination(t, MEDIUM_DELAY_MS);
846	>	awaitTermination(t);
847		}
848
849		/**
850		* transfer waits until a take occurs. The transfered element
851	<	* is returned by this associated take.
851	>	* is returned by the associated take.
852		*/
853		public void testTransfer5() throws InterruptedException {
854	<	final LinkedTransferQueue<Integer> q
988	<	= new LinkedTransferQueue<Integer>();
854	>	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
855
856		Thread t = newStartedThread(new CheckedRunnable() {
857		public void realRun() throws InterruptedException {
#	Line 999 | Line 865 | public class LinkedTransferQueueTest ext
865		assertEquals(1, q.size());
866		assertSame(four, q.take());
867		checkEmpty(q);
868	<	awaitTermination(t, MEDIUM_DELAY_MS);
868	>	awaitTermination(t);
869		}
870
871		/**
872		* tryTransfer(null) throws NullPointerException
873		*/
874		public void testTryTransfer1() {
875	+	final LinkedTransferQueue q = new LinkedTransferQueue();
876		try {
1010	–	final LinkedTransferQueue q = new LinkedTransferQueue();
877		q.tryTransfer(null);
878		shouldThrow();
879		} catch (NullPointerException success) {}
#	Line 1041 | Line 907 | public class LinkedTransferQueueTest ext
907		assertTrue(q.tryTransfer(hotPotato));
908		}});
909
910	<	assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
910	>	long startTime = System.nanoTime();
911	>	assertSame(hotPotato, q.poll(LONG_DELAY_MS, MILLISECONDS));
912	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
913		checkEmpty(q);
914	<	awaitTermination(t, MEDIUM_DELAY_MS);
914	>	awaitTermination(t);
915		}
916
917		/**
#	Line 1065 | Line 933 | public class LinkedTransferQueueTest ext
933
934		assertSame(q.take(), hotPotato);
935		checkEmpty(q);
936	<	awaitTermination(t, MEDIUM_DELAY_MS);
936	>	awaitTermination(t);
937		}
938
939		/**
940	<	* tryTransfer waits the amount given if interrupted, and
1073	<	* throws interrupted exception
940	>	* tryTransfer blocks interruptibly if no takers
941		*/
942		public void testTryTransfer5() throws InterruptedException {
943		final LinkedTransferQueue q = new LinkedTransferQueue();
944	<	final CountDownLatch threadStarted = new CountDownLatch(1);
944	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
945	>	assertTrue(q.isEmpty());
946
947		Thread t = newStartedThread(new CheckedRunnable() {
948		public void realRun() throws InterruptedException {
949	<	long t0 = System.nanoTime();
950	<	threadStarted.countDown();
949	>	long startTime = System.nanoTime();
950	>	Thread.currentThread().interrupt();
951		try {
952		q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
953		shouldThrow();
954		} catch (InterruptedException success) {}
955	<	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
955	>	assertFalse(Thread.interrupted());
956	>
957	>	pleaseInterrupt.countDown();
958	>	try {
959	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
960	>	shouldThrow();
961	>	} catch (InterruptedException success) {}
962	>	assertFalse(Thread.interrupted());
963	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
964		}});
965
966	<	threadStarted.await();
967	<	Thread.sleep(SHORT_DELAY_MS);
966	>	await(pleaseInterrupt);
967	>	assertThreadBlocks(t, Thread.State.TIMED_WAITING);
968		t.interrupt();
969	<	awaitTermination(t, MEDIUM_DELAY_MS);
969	>	awaitTermination(t);
970		checkEmpty(q);
971		}
972
973		/**
974	<	* tryTransfer gives up after the timeout and return false
974	>	* tryTransfer gives up after the timeout and returns false
975		*/
976		public void testTryTransfer6() throws InterruptedException {
977		final LinkedTransferQueue q = new LinkedTransferQueue();
978
979		Thread t = newStartedThread(new CheckedRunnable() {
980		public void realRun() throws InterruptedException {
981	<	long t0 = System.nanoTime();
981	>	long startTime = System.nanoTime();
982		assertFalse(q.tryTransfer(new Object(),
983	<	SHORT_DELAY_MS, MILLISECONDS));
984	<	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
983	>	timeoutMillis(), MILLISECONDS));
984	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
985		checkEmpty(q);
986		}});
987
988	<	awaitTermination(t, MEDIUM_DELAY_MS);
988	>	awaitTermination(t);
989		checkEmpty(q);
990		}
991
#	Line 1123 | Line 999 | public class LinkedTransferQueueTest ext
999
1000		Thread t = newStartedThread(new CheckedRunnable() {
1001		public void realRun() throws InterruptedException {
1002	<	assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
1002	>	long startTime = System.nanoTime();
1003	>	assertTrue(q.tryTransfer(five, LONG_DELAY_MS, MILLISECONDS));
1004	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1005		checkEmpty(q);
1006		}});
1007
#	Line 1133 | Line 1011 | public class LinkedTransferQueueTest ext
1011		assertSame(four, q.poll());
1012		assertSame(five, q.poll());
1013		checkEmpty(q);
1014	<	awaitTermination(t, MEDIUM_DELAY_MS);
1014	>	awaitTermination(t);
1015		}
1016
1017		/**
1018	<	* tryTransfer attempts to enqueue into the q and fails returning
1019	<	* false not enqueueing and the successive poll is null
1018	>	* tryTransfer attempts to enqueue into the queue and fails
1019	>	* returning false not enqueueing and the successive poll is null
1020		*/
1021		public void testTryTransfer8() throws InterruptedException {
1022		final LinkedTransferQueue q = new LinkedTransferQueue();
1023		assertTrue(q.offer(four));
1024		assertEquals(1, q.size());
1025	<	long t0 = System.nanoTime();
1026	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1027	<	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
1025	>	long startTime = System.nanoTime();
1026	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
1027	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
1028		assertEquals(1, q.size());
1029		assertSame(four, q.poll());
1030		assertNull(q.poll());
#	Line 1154 | Line 1032 | public class LinkedTransferQueueTest ext
1032		}
1033
1034		private LinkedTransferQueue<Integer> populatedQueue(int n) {
1035	<	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1035	>	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>();
1036		checkEmpty(q);
1037		for (int i = 0; i < n; i++) {
1038		assertEquals(i, q.size());
#	Line 1164 | Line 1042 | public class LinkedTransferQueueTest ext
1042		assertFalse(q.isEmpty());
1043		return q;
1044		}
1045	+
1046	+	/**
1047	+	* remove(null), contains(null) always return false
1048	+	*/
1049	+	public void testNeverContainsNull() {
1050	+	Collection<?>[] qs = {
1051	+	new LinkedTransferQueue<Object>(),
1052	+	populatedQueue(2),
1053	+	};
1054	+
1055	+	for (Collection<?> q : qs) {
1056	+	assertFalse(q.contains(null));
1057	+	assertFalse(q.remove(null));
1058	+	}
1059	+	}
1060		}

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