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Comparing jsr166/src/test/tck/ArrayBlockingQueueTest.java (file contents):
Revision 1.19 by jsr166, Sat Nov 21 10:29:49 2009 UTC vs.
Revision 1.49 by jsr166, Tue May 31 16:16:23 2011 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 Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
8
9	–
9		import junit.framework.*;
10	<	import java.util.*;
11	<	import java.util.concurrent.*;
10	>	import java.util.Arrays;
11	>	import java.util.ArrayList;
12	>	import java.util.Collection;
13	>	import java.util.Iterator;
14	>	import java.util.NoSuchElementException;
15	>	import java.util.Queue;
16	>	import java.util.concurrent.ArrayBlockingQueue;
17	>	import java.util.concurrent.BlockingQueue;
18	>	import java.util.concurrent.CountDownLatch;
19	>	import java.util.concurrent.Executors;
20	>	import java.util.concurrent.ExecutorService;
21		import static java.util.concurrent.TimeUnit.MILLISECONDS;
14	–	import java.io.*;
22
23		public class ArrayBlockingQueueTest extends JSR166TestCase {
24	+
25	+	public static class Fair extends BlockingQueueTest {
26	+	protected BlockingQueue emptyCollection() {
27	+	return new ArrayBlockingQueue(20, true);
28	+	}
29	+	}
30	+
31	+	public static class NonFair extends BlockingQueueTest {
32	+	protected BlockingQueue emptyCollection() {
33	+	return new ArrayBlockingQueue(20, false);
34	+	}
35	+	}
36	+
37		public static void main(String[] args) {
38	<	junit.textui.TestRunner.run (suite());
38	>	junit.textui.TestRunner.run(suite());
39		}
40	+
41		public static Test suite() {
42	<	return new TestSuite(ArrayBlockingQueueTest.class);
42	>	return newTestSuite(ArrayBlockingQueueTest.class,
43	>	new Fair().testSuite(),
44	>	new NonFair().testSuite());
45		}
46
47		/**
48		* Create a queue of given size containing consecutive
49		* Integers 0 ... n.
50		*/
51	<	private ArrayBlockingQueue populatedQueue(int n) {
52	<	ArrayBlockingQueue q = new ArrayBlockingQueue(n);
51	>	private ArrayBlockingQueue<Integer> populatedQueue(int n) {
52	>	ArrayBlockingQueue<Integer> q = new ArrayBlockingQueue<Integer>(n);
53		assertTrue(q.isEmpty());
54		for (int i = 0; i < n; i++)
55		assertTrue(q.offer(new Integer(i)));
#	Line 48 | Line 71 | public class ArrayBlockingQueueTest exte
71		*/
72		public void testConstructor2() {
73		try {
74	<	ArrayBlockingQueue q = new ArrayBlockingQueue(0);
74	>	new ArrayBlockingQueue(0);
75		shouldThrow();
76		} catch (IllegalArgumentException success) {}
77		}
#	Line 58 | Line 81 | public class ArrayBlockingQueueTest exte
81		*/
82		public void testConstructor3() {
83		try {
84	<	ArrayBlockingQueue q = new ArrayBlockingQueue(1, true, null);
84	>	new ArrayBlockingQueue(1, true, null);
85		shouldThrow();
86		} catch (NullPointerException success) {}
87		}
#	Line 67 | Line 90 | public class ArrayBlockingQueueTest exte
90		* Initializing from Collection of null elements throws NPE
91		*/
92		public void testConstructor4() {
93	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
94		try {
95	<	Integer[] ints = new Integer[SIZE];
72	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, false, Arrays.asList(ints));
95	>	new ArrayBlockingQueue(SIZE, false, elements);
96		shouldThrow();
97		} catch (NullPointerException success) {}
98		}
#	Line 78 | Line 101 | public class ArrayBlockingQueueTest exte
101		* Initializing from Collection with some null elements throws NPE
102		*/
103		public void testConstructor5() {
104	+	Integer[] ints = new Integer[SIZE];
105	+	for (int i = 0; i < SIZE-1; ++i)
106	+	ints[i] = i;
107	+	Collection<Integer> elements = Arrays.asList(ints);
108		try {
109	<	Integer[] ints = new Integer[SIZE];
83	<	for (int i = 0; i < SIZE-1; ++i)
84	<	ints[i] = new Integer(i);
85	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, false, Arrays.asList(ints));
109	>	new ArrayBlockingQueue(SIZE, false, Arrays.asList(ints));
110		shouldThrow();
111		} catch (NullPointerException success) {}
112		}
#	Line 91 | Line 115 | public class ArrayBlockingQueueTest exte
115		* Initializing from too large collection throws IAE
116		*/
117		public void testConstructor6() {
118	+	Integer[] ints = new Integer[SIZE];
119	+	for (int i = 0; i < SIZE; ++i)
120	+	ints[i] = i;
121	+	Collection<Integer> elements = Arrays.asList(ints);
122		try {
123	<	Integer[] ints = new Integer[SIZE];
96	<	for (int i = 0; i < SIZE; ++i)
97	<	ints[i] = new Integer(i);
98	<	ArrayBlockingQueue q = new ArrayBlockingQueue(1, false, Arrays.asList(ints));
123	>	new ArrayBlockingQueue(SIZE - 1, false, elements);
124		shouldThrow();
125		} catch (IllegalArgumentException success) {}
126		}
#	Line 106 | Line 131 | public class ArrayBlockingQueueTest exte
131		public void testConstructor7() {
132		Integer[] ints = new Integer[SIZE];
133		for (int i = 0; i < SIZE; ++i)
134	<	ints[i] = new Integer(i);
135	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, true, Arrays.asList(ints));
134	>	ints[i] = i;
135	>	Collection<Integer> elements = Arrays.asList(ints);
136	>	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, true, elements);
137		for (int i = 0; i < SIZE; ++i)
138		assertEquals(ints[i], q.poll());
139		}
#	Line 145 | Line 171 | public class ArrayBlockingQueueTest exte
171		}
172
173		/**
148	–	*  offer(null) throws NPE
149	–	*/
150	–	public void testOfferNull() {
151	–	try {
152	–	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
153	–	q.offer(null);
154	–	shouldThrow();
155	–	} catch (NullPointerException success) {}
156	–	}
157	–
158	–	/**
159	–	*  add(null) throws NPE
160	–	*/
161	–	public void testAddNull() {
162	–	try {
163	–	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
164	–	q.add(null);
165	–	shouldThrow();
166	–	} catch (NullPointerException success) {}
167	–	}
168	–
169	–	/**
174		* Offer succeeds if not full; fails if full
175		*/
176		public void testOffer() {
#	Line 191 | Line 195 | public class ArrayBlockingQueueTest exte
195		}
196
197		/**
194	–	*  addAll(null) throws NPE
195	–	*/
196	–	public void testAddAll1() {
197	–	try {
198	–	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
199	–	q.addAll(null);
200	–	shouldThrow();
201	–	} catch (NullPointerException success) {}
202	–	}
203	–
204	–	/**
198		* addAll(this) throws IAE
199		*/
200		public void testAddAllSelf() {
#	Line 212 | Line 205 | public class ArrayBlockingQueueTest exte
205		} catch (IllegalArgumentException success) {}
206		}
207
215	–
216	–	/**
217	–	*  addAll of a collection with null elements throws NPE
218	–	*/
219	–	public void testAddAll2() {
220	–	try {
221	–	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
222	–	Integer[] ints = new Integer[SIZE];
223	–	q.addAll(Arrays.asList(ints));
224	–	shouldThrow();
225	–	} catch (NullPointerException success) {}
226	–	}
208		/**
209		* addAll of a collection with any null elements throws NPE after
210		* possibly adding some elements
#	Line 238 | Line 219 | public class ArrayBlockingQueueTest exte
219		shouldThrow();
220		} catch (NullPointerException success) {}
221		}
222	+
223		/**
224		* addAll throws ISE if not enough room
225		*/
#	Line 251 | Line 233 | public class ArrayBlockingQueueTest exte
233		shouldThrow();
234		} catch (IllegalStateException success) {}
235		}
236	+
237		/**
238		* Queue contains all elements, in traversal order, of successful addAll
239		*/
#	Line 267 | Line 250 | public class ArrayBlockingQueueTest exte
250		}
251
252		/**
270	–	*  put(null) throws NPE
271	–	*/
272	–	public void testPutNull() throws InterruptedException {
273	–	try {
274	–	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
275	–	q.put(null);
276	–	shouldThrow();
277	–	} catch (NullPointerException success) {}
278	–	}
279	–
280	–	/**
253		* all elements successfully put are contained
254		*/
255		public void testPut() throws InterruptedException {
#	Line 295 | Line 267 | public class ArrayBlockingQueueTest exte
267		*/
268		public void testBlockingPut() throws InterruptedException {
269		final ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
270	<	Thread t = new Thread(new CheckedRunnable() {
271	<	public void realRun() {
272	<	int added = 0;
270	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
271	>	Thread t = newStartedThread(new CheckedRunnable() {
272	>	public void realRun() throws InterruptedException {
273	>	for (int i = 0; i < SIZE; ++i)
274	>	q.put(i);
275	>	assertEquals(SIZE, q.size());
276	>	assertEquals(0, q.remainingCapacity());
277	>
278	>	Thread.currentThread().interrupt();
279		try {
280	<	for (int i = 0; i < SIZE; ++i) {
281	<	q.put(new Integer(i));
282	<	++added;
283	<	}
306	<	q.put(new Integer(SIZE));
307	<	threadShouldThrow();
308	<	} catch (InterruptedException ie) {
309	<	threadAssertEquals(added, SIZE);
310	<	}}});
280	>	q.put(99);
281	>	shouldThrow();
282	>	} catch (InterruptedException success) {}
283	>	assertFalse(Thread.interrupted());
284
285	<	t.start();
286	<	Thread.sleep(MEDIUM_DELAY_MS);
285	>	pleaseInterrupt.countDown();
286	>	try {
287	>	q.put(99);
288	>	shouldThrow();
289	>	} catch (InterruptedException success) {}
290	>	assertFalse(Thread.interrupted());
291	>	}});
292	>
293	>	await(pleaseInterrupt);
294	>	assertThreadStaysAlive(t);
295		t.interrupt();
296	<	t.join();
296	>	awaitTermination(t);
297	>	assertEquals(SIZE, q.size());
298	>	assertEquals(0, q.remainingCapacity());
299		}
300
301		/**
302	<	* put blocks waiting for take when full
302	>	* put blocks interruptibly waiting for take when full
303		*/
304		public void testPutWithTake() throws InterruptedException {
305	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
306	<	Thread t = new Thread(new CheckedRunnable() {
307	<	public void realRun() {
308	<	int added = 0;
305	>	final int capacity = 2;
306	>	final ArrayBlockingQueue q = new ArrayBlockingQueue(capacity);
307	>	final CountDownLatch pleaseTake = new CountDownLatch(1);
308	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
309	>	Thread t = newStartedThread(new CheckedRunnable() {
310	>	public void realRun() throws InterruptedException {
311	>	for (int i = 0; i < capacity; i++)
312	>	q.put(i);
313	>	pleaseTake.countDown();
314	>	q.put(86);
315	>
316	>	pleaseInterrupt.countDown();
317		try {
318	<	q.put(new Object());
319	<	++added;
320	<	q.put(new Object());
321	<	++added;
331	<	q.put(new Object());
332	<	++added;
333	<	q.put(new Object());
334	<	++added;
335	<	threadShouldThrow();
336	<	} catch (InterruptedException e) {
337	<	threadAssertTrue(added >= 2);
338	<	}
318	>	q.put(99);
319	>	shouldThrow();
320	>	} catch (InterruptedException success) {}
321	>	assertFalse(Thread.interrupted());
322		}});
323
324	<	t.start();
325	<	Thread.sleep(SHORT_DELAY_MS);
326	<	q.take();
324	>	await(pleaseTake);
325	>	assertEquals(q.remainingCapacity(), 0);
326	>	assertEquals(0, q.take());
327	>
328	>	await(pleaseInterrupt);
329	>	assertThreadStaysAlive(t);
330		t.interrupt();
331	<	t.join();
331	>	awaitTermination(t);
332	>	assertEquals(q.remainingCapacity(), 0);
333		}
334
335		/**
#	Line 350 | Line 337 | public class ArrayBlockingQueueTest exte
337		*/
338		public void testTimedOffer() throws InterruptedException {
339		final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
340	<	Thread t = new ThreadShouldThrow(InterruptedException.class) {
340	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
341	>	Thread t = newStartedThread(new CheckedRunnable() {
342		public void realRun() throws InterruptedException {
343		q.put(new Object());
344		q.put(new Object());
345	<	threadAssertFalse(q.offer(new Object(), SHORT_DELAY_MS/2, MILLISECONDS));
346	<	q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS);
347	<	}};
345	>	long startTime = System.nanoTime();
346	>	assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS));
347	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
348	>	pleaseInterrupt.countDown();
349	>	try {
350	>	q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS);
351	>	shouldThrow();
352	>	} catch (InterruptedException success) {}
353	>	}});
354
355	<	t.start();
356	<	Thread.sleep(SHORT_DELAY_MS);
355	>	await(pleaseInterrupt);
356	>	assertThreadStaysAlive(t);
357		t.interrupt();
358	<	t.join();
358	>	awaitTermination(t);
359		}
360
361		/**
#	Line 370 | Line 364 | public class ArrayBlockingQueueTest exte
364		public void testTake() throws InterruptedException {
365		ArrayBlockingQueue q = populatedQueue(SIZE);
366		for (int i = 0; i < SIZE; ++i) {
367	<	assertEquals(i, ((Integer)q.take()).intValue());
367	>	assertEquals(i, q.take());
368		}
369		}
370
371		/**
378	–	* take blocks interruptibly when empty
379	–	*/
380	–	public void testTakeFromEmpty() throws InterruptedException {
381	–	final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
382	–	Thread t = new ThreadShouldThrow(InterruptedException.class) {
383	–	public void realRun() throws InterruptedException {
384	–	q.take();
385	–	}};
386	–
387	–	t.start();
388	–	Thread.sleep(SHORT_DELAY_MS);
389	–	t.interrupt();
390	–	t.join();
391	–	}
392	–
393	–	/**
372		* Take removes existing elements until empty, then blocks interruptibly
373		*/
374		public void testBlockingTake() throws InterruptedException {
375	<	Thread t = new ThreadShouldThrow(InterruptedException.class) {
375	>	final ArrayBlockingQueue q = populatedQueue(SIZE);
376	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
377	>	Thread t = newStartedThread(new CheckedRunnable() {
378		public void realRun() throws InterruptedException {
399	–	ArrayBlockingQueue q = populatedQueue(SIZE);
379		for (int i = 0; i < SIZE; ++i) {
380	<	threadAssertEquals(i, ((Integer)q.take()).intValue());
380	>	assertEquals(i, q.take());
381		}
403	–	q.take();
404	–	}};
382
383	<	t.start();
384	<	Thread.sleep(SHORT_DELAY_MS);
385	<	t.interrupt();
386	<	t.join();
387	<	}
383	>	Thread.currentThread().interrupt();
384	>	try {
385	>	q.take();
386	>	shouldThrow();
387	>	} catch (InterruptedException success) {}
388	>	assertFalse(Thread.interrupted());
389
390	+	pleaseInterrupt.countDown();
391	+	try {
392	+	q.take();
393	+	shouldThrow();
394	+	} catch (InterruptedException success) {}
395	+	assertFalse(Thread.interrupted());
396	+	}});
397	+
398	+	await(pleaseInterrupt);
399	+	assertThreadStaysAlive(t);
400	+	t.interrupt();
401	+	awaitTermination(t);
402	+	}
403
404		/**
405		* poll succeeds unless empty
#	Line 416 | Line 407 | public class ArrayBlockingQueueTest exte
407		public void testPoll() {
408		ArrayBlockingQueue q = populatedQueue(SIZE);
409		for (int i = 0; i < SIZE; ++i) {
410	<	assertEquals(i, ((Integer)q.poll()).intValue());
410	>	assertEquals(i, q.poll());
411		}
412		assertNull(q.poll());
413		}
414
415		/**
416	<	* timed pool with zero timeout succeeds when non-empty, else times out
416	>	* timed poll with zero timeout succeeds when non-empty, else times out
417		*/
418		public void testTimedPoll0() throws InterruptedException {
419		ArrayBlockingQueue q = populatedQueue(SIZE);
420		for (int i = 0; i < SIZE; ++i) {
421	<	assertEquals(i, ((Integer)q.poll(0, MILLISECONDS)).intValue());
421	>	assertEquals(i, q.poll(0, MILLISECONDS));
422		}
423		assertNull(q.poll(0, MILLISECONDS));
424	+	checkEmpty(q);
425		}
426
427		/**
428	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
428	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
429		*/
430		public void testTimedPoll() throws InterruptedException {
431		ArrayBlockingQueue q = populatedQueue(SIZE);
432		for (int i = 0; i < SIZE; ++i) {
433	<	assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, MILLISECONDS)).intValue());
434	<	}
435	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
433	>	long startTime = System.nanoTime();
434	>	assertEquals(i, q.poll(LONG_DELAY_MS, MILLISECONDS));
435	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
436	>	}
437	>	long startTime = System.nanoTime();
438	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
439	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
440	>	checkEmpty(q);
441		}
442
443		/**
#	Line 448 | Line 445 | public class ArrayBlockingQueueTest exte
445		* returning timeout status
446		*/
447		public void testInterruptedTimedPoll() throws InterruptedException {
448	<	Thread t = new ThreadShouldThrow(InterruptedException.class) {
448	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
449	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
450	>	Thread t = newStartedThread(new CheckedRunnable() {
451		public void realRun() throws InterruptedException {
453	–	ArrayBlockingQueue q = populatedQueue(SIZE);
452		for (int i = 0; i < SIZE; ++i) {
453	<	threadAssertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, MILLISECONDS)).intValue());
453	>	long t0 = System.nanoTime();
454	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
455	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
456		}
457	<	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
458	<	}};
459	<
460	<	t.start();
461	<	Thread.sleep(SMALL_DELAY_MS);
462	<	t.interrupt();
463	<	t.join();
464	<	}
465	<
466	<	/**
467	<	*  timed poll before a delayed offer fails; after offer succeeds;
468	<	*  on interruption throws
469	<	*/
470	<	public void testTimedPollWithOffer() throws InterruptedException {
471	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
472	<	Thread t = new ThreadShouldThrow(InterruptedException.class) {
473	<	public void realRun() throws InterruptedException {
474	<	threadAssertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
475	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
476	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
477	<	}};
457	>	long t0 = System.nanoTime();
458	>	aboutToWait.countDown();
459	>	try {
460	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
461	>	shouldThrow();
462	>	} catch (InterruptedException success) {
463	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
464	>	}
465	>	}});
466
467	<	t.start();
468	<	Thread.sleep(SMALL_DELAY_MS);
481	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
467	>	aboutToWait.await();
468	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
469		t.interrupt();
470	<	t.join();
470	>	awaitTermination(t, MEDIUM_DELAY_MS);
471	>	checkEmpty(q);
472		}
473
486	–
474		/**
475		* peek returns next element, or null if empty
476		*/
477		public void testPeek() {
478		ArrayBlockingQueue q = populatedQueue(SIZE);
479		for (int i = 0; i < SIZE; ++i) {
480	<	assertEquals(i, ((Integer)q.peek()).intValue());
481	<	q.poll();
480	>	assertEquals(i, q.peek());
481	>	assertEquals(i, q.poll());
482		assertTrue(q.peek() == null ||
483	<	i != ((Integer)q.peek()).intValue());
483	>	!q.peek().equals(i));
484		}
485		assertNull(q.peek());
486		}
#	Line 504 | Line 491 | public class ArrayBlockingQueueTest exte
491		public void testElement() {
492		ArrayBlockingQueue q = populatedQueue(SIZE);
493		for (int i = 0; i < SIZE; ++i) {
494	<	assertEquals(i, ((Integer)q.element()).intValue());
495	<	q.poll();
494	>	assertEquals(i, q.element());
495	>	assertEquals(i, q.poll());
496		}
497		try {
498		q.element();
#	Line 519 | Line 506 | public class ArrayBlockingQueueTest exte
506		public void testRemove() {
507		ArrayBlockingQueue q = populatedQueue(SIZE);
508		for (int i = 0; i < SIZE; ++i) {
509	<	assertEquals(i, ((Integer)q.remove()).intValue());
509	>	assertEquals(i, q.remove());
510		}
511		try {
512		q.remove();
#	Line 549 | Line 536 | public class ArrayBlockingQueueTest exte
536		ArrayBlockingQueue q = populatedQueue(SIZE);
537		for (int i = 0; i < SIZE; ++i) {
538		assertTrue(q.contains(new Integer(i)));
539	<	q.poll();
539	>	assertEquals(i, q.poll());
540		assertFalse(q.contains(new Integer(i)));
541		}
542		}
#	Line 620 | Line 607 | public class ArrayBlockingQueueTest exte
607		}
608
609		/**
610	<	*  toArray contains all elements
610	>	* toArray contains all elements in FIFO order
611		*/
612	<	public void testToArray() throws InterruptedException {
612	>	public void testToArray() {
613		ArrayBlockingQueue q = populatedQueue(SIZE);
614		Object[] o = q.toArray();
615		for (int i = 0; i < o.length; i++)
616	<	assertEquals(o[i], q.take());
616	>	assertSame(o[i], q.poll());
617		}
618
619		/**
620	<	* toArray(a) contains all elements
620	>	* toArray(a) contains all elements in FIFO order
621		*/
622	<	public void testToArray2() throws InterruptedException {
623	<	ArrayBlockingQueue q = populatedQueue(SIZE);
622	>	public void testToArray2() {
623	>	ArrayBlockingQueue<Integer> q = populatedQueue(SIZE);
624		Integer[] ints = new Integer[SIZE];
625	<	ints = (Integer[])q.toArray(ints);
625	>	Integer[] array = q.toArray(ints);
626	>	assertSame(ints, array);
627		for (int i = 0; i < ints.length; i++)
628	<	assertEquals(ints[i], q.take());
628	>	assertSame(ints[i], q.poll());
629		}
630
631		/**
632	<	* toArray(null) throws NPE
645	<	*/
646	<	public void testToArray_BadArg() {
647	<	try {
648	<	ArrayBlockingQueue q = populatedQueue(SIZE);
649	<	Object o[] = q.toArray(null);
650	<	shouldThrow();
651	<	} catch (NullPointerException success) {}
652	<	}
653	<
654	<	/**
655	<	* toArray with incompatible array type throws CCE
632	>	* toArray(incompatible array type) throws ArrayStoreException
633		*/
634		public void testToArray1_BadArg() {
635	+	ArrayBlockingQueue q = populatedQueue(SIZE);
636		try {
637	<	ArrayBlockingQueue q = populatedQueue(SIZE);
660	<	Object o[] = q.toArray(new String[10] );
637	>	q.toArray(new String[10]);
638		shouldThrow();
639		} catch (ArrayStoreException success) {}
640		}
641
665	–
642		/**
643		* iterator iterates through all elements
644		*/
#	Line 677 | Line 653 | public class ArrayBlockingQueueTest exte
653		/**
654		* iterator.remove removes current element
655		*/
656	<	public void testIteratorRemove () {
656	>	public void testIteratorRemove() {
657		final ArrayBlockingQueue q = new ArrayBlockingQueue(3);
658		q.add(two);
659		q.add(one);
#	Line 688 | Line 664 | public class ArrayBlockingQueueTest exte
664		it.remove();
665
666		it = q.iterator();
667	<	assertEquals(it.next(), one);
668	<	assertEquals(it.next(), three);
667	>	assertSame(it.next(), one);
668	>	assertSame(it.next(), three);
669		assertFalse(it.hasNext());
670		}
671
#	Line 706 | Line 682 | public class ArrayBlockingQueueTest exte
682
683		int k = 0;
684		for (Iterator it = q.iterator(); it.hasNext();) {
685	<	int i = ((Integer)(it.next())).intValue();
710	<	assertEquals(++k, i);
685	>	assertEquals(++k, it.next());
686		}
687		assertEquals(3, k);
688		}
#	Line 715 | Line 690 | public class ArrayBlockingQueueTest exte
690		/**
691		* Modifications do not cause iterators to fail
692		*/
693	<	public void testWeaklyConsistentIteration () {
693	>	public void testWeaklyConsistentIteration() {
694		final ArrayBlockingQueue q = new ArrayBlockingQueue(3);
695		q.add(one);
696		q.add(two);
#	Line 727 | Line 702 | public class ArrayBlockingQueueTest exte
702		assertEquals(0, q.size());
703		}
704
730	–
705		/**
706		* toString contains toStrings of elements
707		*/
#	Line 735 | Line 709 | public class ArrayBlockingQueueTest exte
709		ArrayBlockingQueue q = populatedQueue(SIZE);
710		String s = q.toString();
711		for (int i = 0; i < SIZE; ++i) {
712	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
712	>	assertTrue(s.contains(String.valueOf(i)));
713		}
714		}
715
742	–
716		/**
717		* offer transfers elements across Executor tasks
718		*/
#	Line 748 | Line 721 | public class ArrayBlockingQueueTest exte
721		q.add(one);
722		q.add(two);
723		ExecutorService executor = Executors.newFixedThreadPool(2);
724	+	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
725		executor.execute(new CheckedRunnable() {
726		public void realRun() throws InterruptedException {
727	<	threadAssertFalse(q.offer(three));
728	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS));
729	<	threadAssertEquals(0, q.remainingCapacity());
727	>	assertFalse(q.offer(three));
728	>	threadsStarted.await();
729	>	assertTrue(q.offer(three, LONG_DELAY_MS, MILLISECONDS));
730	>	assertEquals(0, q.remainingCapacity());
731		}});
732
733		executor.execute(new CheckedRunnable() {
734		public void realRun() throws InterruptedException {
735	<	Thread.sleep(SMALL_DELAY_MS);
736	<	threadAssertEquals(one, q.take());
735	>	threadsStarted.await();
736	>	assertEquals(0, q.remainingCapacity());
737	>	assertSame(one, q.take());
738		}});
739
740		joinPool(executor);
765	–
741		}
742
743		/**
744	<	* poll retrieves elements across Executor threads
744	>	* timed poll retrieves elements across Executor threads
745		*/
746		public void testPollInExecutor() {
747		final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
748	+	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
749		ExecutorService executor = Executors.newFixedThreadPool(2);
750		executor.execute(new CheckedRunnable() {
751		public void realRun() throws InterruptedException {
752	<	threadAssertNull(q.poll());
753	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
754	<	threadAssertTrue(q.isEmpty());
752	>	assertNull(q.poll());
753	>	threadsStarted.await();
754	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
755	>	checkEmpty(q);
756		}});
757
758		executor.execute(new CheckedRunnable() {
759		public void realRun() throws InterruptedException {
760	<	Thread.sleep(SMALL_DELAY_MS);
760	>	threadsStarted.await();
761		q.put(one);
762		}});
763
#	Line 791 | Line 768 | public class ArrayBlockingQueueTest exte
768		* A deserialized serialized queue has same elements in same order
769		*/
770		public void testSerialization() throws Exception {
771	<	ArrayBlockingQueue q = populatedQueue(SIZE);
772	<
796	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
797	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
798	<	out.writeObject(q);
799	<	out.close();
800	<
801	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
802	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
803	<	ArrayBlockingQueue r = (ArrayBlockingQueue)in.readObject();
804	<	assertEquals(q.size(), r.size());
805	<	while (!q.isEmpty())
806	<	assertEquals(q.remove(), r.remove());
807	<	}
771	>	Queue x = populatedQueue(SIZE);
772	>	Queue y = serialClone(x);
773
774	<	/**
775	<	* drainTo(null) throws NPE
776	<	*/
777	<	public void testDrainToNull() {
778	<	ArrayBlockingQueue q = populatedQueue(SIZE);
779	<	try {
780	<	q.drainTo(null);
781	<	shouldThrow();
782	<	} catch (NullPointerException success) {}
818	<	}
819	<
820	<	/**
821	<	* drainTo(this) throws IAE
822	<	*/
823	<	public void testDrainToSelf() {
824	<	ArrayBlockingQueue q = populatedQueue(SIZE);
825	<	try {
826	<	q.drainTo(q);
827	<	shouldThrow();
828	<	} catch (IllegalArgumentException success) {}
774	>	assertTrue(x != y);
775	>	assertEquals(x.size(), y.size());
776	>	assertEquals(x.toString(), y.toString());
777	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
778	>	while (!x.isEmpty()) {
779	>	assertFalse(y.isEmpty());
780	>	assertEquals(x.remove(), y.remove());
781	>	}
782	>	assertTrue(y.isEmpty());
783		}
784
785		/**
#	Line 873 | Line 827 | public class ArrayBlockingQueueTest exte
827		}
828
829		/**
830	<	* drainTo(null, n) throws NPE
877	<	*/
878	<	public void testDrainToNullN() {
879	<	ArrayBlockingQueue q = populatedQueue(SIZE);
880	<	try {
881	<	q.drainTo(null, 0);
882	<	shouldThrow();
883	<	} catch (NullPointerException success) {}
884	<	}
885	<
886	<	/**
887	<	* drainTo(this, n) throws IAE
888	<	*/
889	<	public void testDrainToSelfN() {
890	<	ArrayBlockingQueue q = populatedQueue(SIZE);
891	<	try {
892	<	q.drainTo(q, 0);
893	<	shouldThrow();
894	<	} catch (IllegalArgumentException success) {}
895	<	}
896	<
897	<	/**
898	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
830	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
831		*/
832		public void testDrainToN() {
833		ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE*2);
#	Line 904 | Line 836 | public class ArrayBlockingQueueTest exte
836		assertTrue(q.offer(new Integer(j)));
837		ArrayList l = new ArrayList();
838		q.drainTo(l, i);
839	<	int k = (i < SIZE)? i : SIZE;
839	>	int k = (i < SIZE) ? i : SIZE;
840		assertEquals(l.size(), k);
841		assertEquals(q.size(), SIZE-k);
842		for (int j = 0; j < k; ++j)

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