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Comparing jsr166/src/test/tck/LinkedBlockingQueueTest.java (file contents):
Revision 1.13 by jsr166, Mon Nov 16 04:57:10 2009 UTC vs.
Revision 1.43 by jsr166, Sat May 21 06:24:33 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		*/
#	Line 9 | Line 9
9		import junit.framework.*;
10		import java.util.*;
11		import java.util.concurrent.*;
12	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
13		import java.io.*;
14
15		public class LinkedBlockingQueueTest extends JSR166TestCase {
16
17	+	public static class Unbounded extends BlockingQueueTest {
18	+	protected BlockingQueue emptyCollection() {
19	+	return new LinkedBlockingQueue();
20	+	}
21	+	}
22	+
23	+	public static class Bounded extends BlockingQueueTest {
24	+	protected BlockingQueue emptyCollection() {
25	+	return new LinkedBlockingQueue(20);
26	+	}
27	+	}
28	+
29		public static void main(String[] args) {
30	<	junit.textui.TestRunner.run (suite());
30	>	junit.textui.TestRunner.run(suite());
31		}
32
33		public static Test suite() {
34	<	return new TestSuite(LinkedBlockingQueueTest.class);
34	>	return newTestSuite(LinkedBlockingQueueTest.class,
35	>	new Unbounded().testSuite(),
36	>	new Bounded().testSuite());
37		}
38
39
#	Line 26 | Line 41 | public class LinkedBlockingQueueTest ext
41		* Create a queue of given size containing consecutive
42		* Integers 0 ... n.
43		*/
44	<	private LinkedBlockingQueue populatedQueue(int n) {
45	<	LinkedBlockingQueue q = new LinkedBlockingQueue(n);
44	>	private LinkedBlockingQueue<Integer> populatedQueue(int n) {
45	>	LinkedBlockingQueue<Integer> q =
46	>	new LinkedBlockingQueue<Integer>(n);
47		assertTrue(q.isEmpty());
48	<	for (int i = 0; i < n; i++)
49	<	assertTrue(q.offer(new Integer(i)));
48	>	for (int i = 0; i < n; i++)
49	>	assertTrue(q.offer(new Integer(i)));
50		assertFalse(q.isEmpty());
51		assertEquals(0, q.remainingCapacity());
52	<	assertEquals(n, q.size());
52	>	assertEquals(n, q.size());
53		return q;
54		}
55
#	Line 47 | Line 63 | public class LinkedBlockingQueueTest ext
63		}
64
65		/**
66	<	* Constructor throws IAE if  capacity argument nonpositive
66	>	* Constructor throws IAE if capacity argument nonpositive
67		*/
68		public void testConstructor2() {
69		try {
70		LinkedBlockingQueue q = new LinkedBlockingQueue(0);
71		shouldThrow();
72	<	}
57	<	catch (IllegalArgumentException success) {}
72	>	} catch (IllegalArgumentException success) {}
73		}
74
75		/**
#	Line 64 | Line 79 | public class LinkedBlockingQueueTest ext
79		try {
80		LinkedBlockingQueue q = new LinkedBlockingQueue(null);
81		shouldThrow();
82	<	}
68	<	catch (NullPointerException success) {}
82	>	} catch (NullPointerException success) {}
83		}
84
85		/**
#	Line 76 | Line 90 | public class LinkedBlockingQueueTest ext
90		Integer[] ints = new Integer[SIZE];
91		LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints));
92		shouldThrow();
93	<	}
80	<	catch (NullPointerException success) {}
93	>	} catch (NullPointerException success) {}
94		}
95
96		/**
#	Line 90 | Line 103 | public class LinkedBlockingQueueTest ext
103		ints[i] = new Integer(i);
104		LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints));
105		shouldThrow();
106	<	}
94	<	catch (NullPointerException success) {}
106	>	} catch (NullPointerException success) {}
107		}
108
109		/**
110		* Queue contains all elements of collection used to initialize
111		*/
112		public void testConstructor6() {
113	<	try {
114	<	Integer[] ints = new Integer[SIZE];
115	<	for (int i = 0; i < SIZE; ++i)
116	<	ints[i] = new Integer(i);
117	<	LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints));
118	<	for (int i = 0; i < SIZE; ++i)
107	<	assertEquals(ints[i], q.poll());
108	<	}
109	<	finally {}
113	>	Integer[] ints = new Integer[SIZE];
114	>	for (int i = 0; i < SIZE; ++i)
115	>	ints[i] = new Integer(i);
116	>	LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints));
117	>	for (int i = 0; i < SIZE; ++i)
118	>	assertEquals(ints[i], q.poll());
119		}
120
121		/**
#	Line 145 | Line 154 | public class LinkedBlockingQueueTest ext
154		* offer(null) throws NPE
155		*/
156		public void testOfferNull() {
157	<	try {
157	>	try {
158		LinkedBlockingQueue q = new LinkedBlockingQueue(1);
159		q.offer(null);
160		shouldThrow();
161	<	} catch (NullPointerException success) { }
161	>	} catch (NullPointerException success) {}
162		}
163
164		/**
165		* add(null) throws NPE
166		*/
167		public void testAddNull() {
168	<	try {
168	>	try {
169		LinkedBlockingQueue q = new LinkedBlockingQueue(1);
170		q.add(null);
171		shouldThrow();
172	<	} catch (NullPointerException success) { }
172	>	} catch (NullPointerException success) {}
173		}
174
175		/**
#	Line 176 | Line 185 | public class LinkedBlockingQueueTest ext
185		* add succeeds if not full; throws ISE if full
186		*/
187		public void testAdd() {
188	<	try {
188	>	try {
189		LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
190		for (int i = 0; i < SIZE; ++i) {
191		assertTrue(q.add(new Integer(i)));
192		}
193		assertEquals(0, q.remainingCapacity());
194		q.add(new Integer(SIZE));
195	<	} catch (IllegalStateException success){
196	<	}
195	>	shouldThrow();
196	>	} catch (IllegalStateException success) {}
197		}
198
199		/**
#	Line 195 | Line 204 | public class LinkedBlockingQueueTest ext
204		LinkedBlockingQueue q = new LinkedBlockingQueue(1);
205		q.addAll(null);
206		shouldThrow();
207	<	}
199	<	catch (NullPointerException success) {}
207	>	} catch (NullPointerException success) {}
208		}
209
210		/**
#	Line 207 | Line 215 | public class LinkedBlockingQueueTest ext
215		LinkedBlockingQueue q = populatedQueue(SIZE);
216		q.addAll(q);
217		shouldThrow();
218	<	}
211	<	catch (IllegalArgumentException success) {}
218	>	} catch (IllegalArgumentException success) {}
219		}
220
221		/**
#	Line 220 | Line 227 | public class LinkedBlockingQueueTest ext
227		Integer[] ints = new Integer[SIZE];
228		q.addAll(Arrays.asList(ints));
229		shouldThrow();
230	<	}
224	<	catch (NullPointerException success) {}
230	>	} catch (NullPointerException success) {}
231		}
232	+
233		/**
234		* addAll of a collection with any null elements throws NPE after
235		* possibly adding some elements
#	Line 235 | Line 242 | public class LinkedBlockingQueueTest ext
242		ints[i] = new Integer(i);
243		q.addAll(Arrays.asList(ints));
244		shouldThrow();
245	<	}
239	<	catch (NullPointerException success) {}
245	>	} catch (NullPointerException success) {}
246		}
247	+
248		/**
249		* addAll throws ISE if not enough room
250		*/
#	Line 249 | Line 256 | public class LinkedBlockingQueueTest ext
256		ints[i] = new Integer(i);
257		q.addAll(Arrays.asList(ints));
258		shouldThrow();
259	<	}
253	<	catch (IllegalStateException success) {}
259	>	} catch (IllegalStateException success) {}
260		}
261	+
262		/**
263		* Queue contains all elements, in traversal order, of successful addAll
264		*/
265		public void testAddAll5() {
266	<	try {
267	<	Integer[] empty = new Integer[0];
268	<	Integer[] ints = new Integer[SIZE];
269	<	for (int i = 0; i < SIZE; ++i)
270	<	ints[i] = new Integer(i);
271	<	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
272	<	assertFalse(q.addAll(Arrays.asList(empty)));
273	<	assertTrue(q.addAll(Arrays.asList(ints)));
274	<	for (int i = 0; i < SIZE; ++i)
268	<	assertEquals(ints[i], q.poll());
269	<	}
270	<	finally {}
266	>	Integer[] empty = new Integer[0];
267	>	Integer[] ints = new Integer[SIZE];
268	>	for (int i = 0; i < SIZE; ++i)
269	>	ints[i] = new Integer(i);
270	>	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
271	>	assertFalse(q.addAll(Arrays.asList(empty)));
272	>	assertTrue(q.addAll(Arrays.asList(ints)));
273	>	for (int i = 0; i < SIZE; ++i)
274	>	assertEquals(ints[i], q.poll());
275		}
276
277		/**
278		* put(null) throws NPE
279		*/
280	<	public void testPutNull() {
281	<	try {
280	>	public void testPutNull() throws InterruptedException {
281	>	try {
282		LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
283		q.put(null);
284		shouldThrow();
285	<	}
286	<	catch (NullPointerException success){
283	<	}
284	<	catch (InterruptedException ie) {
285	<	unexpectedException();
286	<	}
287	<	}
285	>	} catch (NullPointerException success) {}
286	>	}
287
288		/**
289		* all elements successfully put are contained
290		*/
291	<	public void testPut() {
292	<	try {
293	<	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
294	<	for (int i = 0; i < SIZE; ++i) {
295	<	Integer I = new Integer(i);
296	<	q.put(I);
298	<	assertTrue(q.contains(I));
299	<	}
300	<	assertEquals(0, q.remainingCapacity());
301	<	}
302	<	catch (InterruptedException ie) {
303	<	unexpectedException();
291	>	public void testPut() throws InterruptedException {
292	>	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
293	>	for (int i = 0; i < SIZE; ++i) {
294	>	Integer I = new Integer(i);
295	>	q.put(I);
296	>	assertTrue(q.contains(I));
297		}
298	+	assertEquals(0, q.remainingCapacity());
299		}
300
301		/**
302		* put blocks interruptibly if full
303		*/
304	<	public void testBlockingPut() {
305	<	Thread t = new Thread(new Runnable() {
306	<	public void run() {
307	<	int added = 0;
308	<	try {
309	<	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
310	<	for (int i = 0; i < SIZE; ++i) {
311	<	q.put(new Integer(i));
312	<	++added;
313	<	}
314	<	q.put(new Integer(SIZE));
315	<	threadShouldThrow();
316	<	} catch (InterruptedException ie){
317	<	threadAssertEquals(added, SIZE);
324	<	}
325	<	}});
304	>	public void testBlockingPut() throws InterruptedException {
305	>	final LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
306	>	Thread t = new Thread(new CheckedRunnable() {
307	>	public void realRun() throws InterruptedException {
308	>	for (int i = 0; i < SIZE; ++i)
309	>	q.put(i);
310	>	assertEquals(SIZE, q.size());
311	>	assertEquals(0, q.remainingCapacity());
312	>	try {
313	>	q.put(99);
314	>	shouldThrow();
315	>	} catch (InterruptedException success) {}
316	>	}});
317	>
318		t.start();
319	<	try {
320	<	Thread.sleep(SHORT_DELAY_MS);
321	<	t.interrupt();
322	<	t.join();
323	<	}
332	<	catch (InterruptedException ie) {
333	<	unexpectedException();
334	<	}
319	>	delay(SHORT_DELAY_MS);
320	>	t.interrupt();
321	>	t.join();
322	>	assertEquals(SIZE, q.size());
323	>	assertEquals(0, q.remainingCapacity());
324		}
325
326		/**
327		* put blocks waiting for take when full
328		*/
329	<	public void testPutWithTake() {
329	>	public void testPutWithTake() throws InterruptedException {
330	>	final int capacity = 2;
331		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
332	<	Thread t = new Thread(new Runnable() {
333	<	public void run() {
334	<	int added = 0;
335	<	try {
336	<	q.put(new Object());
337	<	++added;
338	<	q.put(new Object());
339	<	++added;
340	<	q.put(new Object());
341	<	++added;
342	<	q.put(new Object());
343	<	++added;
344	<	threadShouldThrow();
345	<	} catch (InterruptedException e){
346	<	threadAssertTrue(added >= 2);
347	<	}
348	<	}
349	<	});
360	<	try {
361	<	t.start();
362	<	Thread.sleep(SHORT_DELAY_MS);
363	<	q.take();
364	<	t.interrupt();
365	<	t.join();
366	<	} catch (Exception e){
367	<	unexpectedException();
368	<	}
332	>	Thread t = new Thread(new CheckedRunnable() {
333	>	public void realRun() throws InterruptedException {
334	>	for (int i = 0; i < capacity + 1; i++)
335	>	q.put(i);
336	>	try {
337	>	q.put(99);
338	>	shouldThrow();
339	>	} catch (InterruptedException success) {}
340	>	}});
341	>
342	>	t.start();
343	>	delay(SHORT_DELAY_MS);
344	>	assertEquals(q.remainingCapacity(), 0);
345	>	assertEquals(0, q.take());
346	>	delay(SHORT_DELAY_MS);
347	>	t.interrupt();
348	>	t.join();
349	>	assertEquals(q.remainingCapacity(), 0);
350		}
351
352		/**
#	Line 373 | Line 354 | public class LinkedBlockingQueueTest ext
354		*/
355		public void testTimedOffer() {
356		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
357	<	Thread t = new Thread(new Runnable() {
358	<	public void run() {
359	<	try {
360	<	q.put(new Object());
361	<	q.put(new Object());
362	<	threadAssertFalse(q.offer(new Object(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
363	<	q.offer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS);
364	<	threadShouldThrow();
365	<	} catch (InterruptedException success){}
366	<	}
367	<	});
368	<
369	<	try {
370	<	t.start();
371	<	Thread.sleep(SMALL_DELAY_MS);
372	<	t.interrupt();
373	<	t.join();
374	<	} catch (Exception e){
394	<	unexpectedException();
395	<	}
357	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
358	>	Thread t = newStartedThread(new CheckedRunnable() {
359	>	public void realRun() throws InterruptedException {
360	>	q.put(new Object());
361	>	q.put(new Object());
362	>	long startTime = System.nanoTime();
363	>	assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS));
364	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
365	>	pleaseInterrupt.countDown();
366	>	try {
367	>	q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS);
368	>	shouldThrow();
369	>	} catch (InterruptedException success) {}
370	>	}});
371	>
372	>	await(pleaseInterrupt);
373	>	t.interrupt();
374	>	awaitTermination(t);
375		}
376
377		/**
378		* take retrieves elements in FIFO order
379		*/
380	<	public void testTake() {
381	<	try {
382	<	LinkedBlockingQueue q = populatedQueue(SIZE);
383	<	for (int i = 0; i < SIZE; ++i) {
405	<	assertEquals(i, ((Integer)q.take()).intValue());
406	<	}
407	<	} catch (InterruptedException e){
408	<	unexpectedException();
409	<	}
410	<	}
411	<
412	<	/**
413	<	* take blocks interruptibly when empty
414	<	*/
415	<	public void testTakeFromEmpty() {
416	<	final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
417	<	Thread t = new Thread(new Runnable() {
418	<	public void run() {
419	<	try {
420	<	q.take();
421	<	threadShouldThrow();
422	<	} catch (InterruptedException success){ }
423	<	}
424	<	});
425	<	try {
426	<	t.start();
427	<	Thread.sleep(SHORT_DELAY_MS);
428	<	t.interrupt();
429	<	t.join();
430	<	} catch (Exception e){
431	<	unexpectedException();
380	>	public void testTake() throws InterruptedException {
381	>	LinkedBlockingQueue q = populatedQueue(SIZE);
382	>	for (int i = 0; i < SIZE; ++i) {
383	>	assertEquals(i, q.take());
384		}
385		}
386
387		/**
388		* Take removes existing elements until empty, then blocks interruptibly
389		*/
390	<	public void testBlockingTake() {
391	<	Thread t = new Thread(new Runnable() {
392	<	public void run() {
393	<	try {
394	<	LinkedBlockingQueue q = populatedQueue(SIZE);
395	<	for (int i = 0; i < SIZE; ++i) {
396	<	assertEquals(i, ((Integer)q.take()).intValue());
397	<	}
398	<	q.take();
399	<	threadShouldThrow();
400	<	} catch (InterruptedException success){
401	<	}
402	<	}});
390	>	public void testBlockingTake() throws InterruptedException {
391	>	final LinkedBlockingQueue q = populatedQueue(SIZE);
392	>	Thread t = new Thread(new CheckedRunnable() {
393	>	public void realRun() throws InterruptedException {
394	>	for (int i = 0; i < SIZE; ++i) {
395	>	assertEquals(i, q.take());
396	>	}
397	>	try {
398	>	q.take();
399	>	shouldThrow();
400	>	} catch (InterruptedException success) {}
401	>	}});
402	>
403		t.start();
404	<	try {
405	<	Thread.sleep(SHORT_DELAY_MS);
406	<	t.interrupt();
455	<	t.join();
456	<	}
457	<	catch (InterruptedException ie) {
458	<	unexpectedException();
459	<	}
404	>	delay(SHORT_DELAY_MS);
405	>	t.interrupt();
406	>	t.join();
407		}
408
462	–
409		/**
410		* poll succeeds unless empty
411		*/
412		public void testPoll() {
413		LinkedBlockingQueue q = populatedQueue(SIZE);
414		for (int i = 0; i < SIZE; ++i) {
415	<	assertEquals(i, ((Integer)q.poll()).intValue());
415	>	assertEquals(i, q.poll());
416		}
417	<	assertNull(q.poll());
417	>	assertNull(q.poll());
418		}
419
420		/**
421	<	* timed pool with zero timeout succeeds when non-empty, else times out
421	>	* timed poll with zero timeout succeeds when non-empty, else times out
422		*/
423	<	public void testTimedPoll0() {
424	<	try {
425	<	LinkedBlockingQueue q = populatedQueue(SIZE);
426	<	for (int i = 0; i < SIZE; ++i) {
427	<	assertEquals(i, ((Integer)q.poll(0, TimeUnit.MILLISECONDS)).intValue());
428	<	}
483	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
484	<	} catch (InterruptedException e){
485	<	unexpectedException();
486	<	}
423	>	public void testTimedPoll0() throws InterruptedException {
424	>	LinkedBlockingQueue q = populatedQueue(SIZE);
425	>	for (int i = 0; i < SIZE; ++i) {
426	>	assertEquals(i, q.poll(0, MILLISECONDS));
427	>	}
428	>	assertNull(q.poll(0, MILLISECONDS));
429		}
430
431		/**
432	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
432	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
433		*/
434	<	public void testTimedPoll() {
435	<	try {
436	<	LinkedBlockingQueue q = populatedQueue(SIZE);
437	<	for (int i = 0; i < SIZE; ++i) {
438	<	assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
439	<	}
498	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
499	<	} catch (InterruptedException e){
500	<	unexpectedException();
501	<	}
434	>	public void testTimedPoll() throws InterruptedException {
435	>	LinkedBlockingQueue q = populatedQueue(SIZE);
436	>	for (int i = 0; i < SIZE; ++i) {
437	>	assertEquals(i, q.poll(SHORT_DELAY_MS, MILLISECONDS));
438	>	}
439	>	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
440		}
441
442		/**
443		* Interrupted timed poll throws InterruptedException instead of
444		* returning timeout status
445		*/
446	<	public void testInterruptedTimedPoll() {
447	<	Thread t = new Thread(new Runnable() {
448	<	public void run() {
449	<	try {
450	<	LinkedBlockingQueue q = populatedQueue(SIZE);
451	<	for (int i = 0; i < SIZE; ++i) {
452	<	threadAssertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
453	<	}
454	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
517	<	} catch (InterruptedException success){
518	<	}
519	<	}});
520	<	t.start();
521	<	try {
522	<	Thread.sleep(SHORT_DELAY_MS);
523	<	t.interrupt();
524	<	t.join();
525	<	}
526	<	catch (InterruptedException ie) {
527	<	unexpectedException();
528	<	}
529	<	}
530	<
531	<	/**
532	<	*  timed poll before a delayed offer fails; after offer succeeds;
533	<	*  on interruption throws
534	<	*/
535	<	public void testTimedPollWithOffer() {
536	<	final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
537	<	Thread t = new Thread(new Runnable() {
538	<	public void run() {
539	<	try {
540	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
541	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
542	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
543	<	threadShouldThrow();
544	<	} catch (InterruptedException success) { }
446	>	public void testInterruptedTimedPoll() throws InterruptedException {
447	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
448	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
449	>	Thread t = newStartedThread(new CheckedRunnable() {
450	>	public void realRun() throws InterruptedException {
451	>	for (int i = 0; i < SIZE; ++i) {
452	>	long t0 = System.nanoTime();
453	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
454	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
455		}
456	<	});
457	<	try {
458	<	t.start();
459	<	Thread.sleep(SMALL_DELAY_MS);
460	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
461	<	t.interrupt();
462	<	t.join();
463	<	} catch (Exception e){
464	<	unexpectedException();
465	<	}
456	>	long t0 = System.nanoTime();
457	>	aboutToWait.countDown();
458	>	try {
459	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
460	>	shouldThrow();
461	>	} catch (InterruptedException success) {
462	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
463	>	}
464	>	}});
465	>
466	>	aboutToWait.await();
467	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
468	>	t.interrupt();
469	>	awaitTermination(t, MEDIUM_DELAY_MS);
470	>	checkEmpty(q);
471		}
472
473		/**
#	Line 561 | Line 476 | public class LinkedBlockingQueueTest ext
476		public void testPeek() {
477		LinkedBlockingQueue q = populatedQueue(SIZE);
478		for (int i = 0; i < SIZE; ++i) {
479	<	assertEquals(i, ((Integer)q.peek()).intValue());
480	<	q.poll();
479	>	assertEquals(i, q.peek());
480	>	assertEquals(i, q.poll());
481		assertTrue(q.peek() == null ||
482	<	i != ((Integer)q.peek()).intValue());
482	>	!q.peek().equals(i));
483		}
484	<	assertNull(q.peek());
484	>	assertNull(q.peek());
485		}
486
487		/**
#	Line 575 | Line 490 | public class LinkedBlockingQueueTest ext
490		public void testElement() {
491		LinkedBlockingQueue q = populatedQueue(SIZE);
492		for (int i = 0; i < SIZE; ++i) {
493	<	assertEquals(i, ((Integer)q.element()).intValue());
494	<	q.poll();
493	>	assertEquals(i, q.element());
494	>	assertEquals(i, q.poll());
495		}
496		try {
497		q.element();
498		shouldThrow();
499	<	}
585	<	catch (NoSuchElementException success) {}
499	>	} catch (NoSuchElementException success) {}
500		}
501
502		/**
#	Line 591 | Line 505 | public class LinkedBlockingQueueTest ext
505		public void testRemove() {
506		LinkedBlockingQueue q = populatedQueue(SIZE);
507		for (int i = 0; i < SIZE; ++i) {
508	<	assertEquals(i, ((Integer)q.remove()).intValue());
508	>	assertEquals(i, q.remove());
509		}
510		try {
511		q.remove();
512		shouldThrow();
513	<	} catch (NoSuchElementException success){
600	<	}
513	>	} catch (NoSuchElementException success) {}
514		}
515
516		/**
#	Line 606 | Line 519 | public class LinkedBlockingQueueTest ext
519		public void testRemoveElement() {
520		LinkedBlockingQueue q = populatedQueue(SIZE);
521		for (int i = 1; i < SIZE; i+=2) {
522	<	assertTrue(q.remove(new Integer(i)));
522	>	assertTrue(q.contains(i));
523	>	assertTrue(q.remove(i));
524	>	assertFalse(q.contains(i));
525	>	assertTrue(q.contains(i-1));
526		}
527		for (int i = 0; i < SIZE; i+=2) {
528	<	assertTrue(q.remove(new Integer(i)));
529	<	assertFalse(q.remove(new Integer(i+1)));
528	>	assertTrue(q.contains(i));
529	>	assertTrue(q.remove(i));
530	>	assertFalse(q.contains(i));
531	>	assertFalse(q.remove(i+1));
532	>	assertFalse(q.contains(i+1));
533		}
534		assertTrue(q.isEmpty());
535		}
#	Line 618 | Line 537 | public class LinkedBlockingQueueTest ext
537		/**
538		* An add following remove(x) succeeds
539		*/
540	<	public void testRemoveElementAndAdd() {
541	<	try {
542	<	LinkedBlockingQueue q = new LinkedBlockingQueue();
543	<	assertTrue(q.add(new Integer(1)));
544	<	assertTrue(q.add(new Integer(2)));
545	<	assertTrue(q.remove(new Integer(1)));
546	<	assertTrue(q.remove(new Integer(2)));
547	<	assertTrue(q.add(new Integer(3)));
629	<	assertTrue(q.take() != null);
630	<	} catch (Exception e){
631	<	unexpectedException();
632	<	}
540	>	public void testRemoveElementAndAdd() throws InterruptedException {
541	>	LinkedBlockingQueue q = new LinkedBlockingQueue();
542	>	assertTrue(q.add(new Integer(1)));
543	>	assertTrue(q.add(new Integer(2)));
544	>	assertTrue(q.remove(new Integer(1)));
545	>	assertTrue(q.remove(new Integer(2)));
546	>	assertTrue(q.add(new Integer(3)));
547	>	assertTrue(q.take() != null);
548		}
549
550		/**
#	Line 710 | Line 625 | public class LinkedBlockingQueueTest ext
625		}
626
627		/**
628	<	* toArray contains all elements
628	>	* toArray contains all elements in FIFO order
629		*/
630		public void testToArray() {
631		LinkedBlockingQueue q = populatedQueue(SIZE);
632	<	Object[] o = q.toArray();
633	<	try {
634	<	for (int i = 0; i < o.length; i++)
720	<	assertEquals(o[i], q.take());
721	<	} catch (InterruptedException e){
722	<	unexpectedException();
723	<	}
632	>	Object[] o = q.toArray();
633	>	for (int i = 0; i < o.length; i++)
634	>	assertSame(o[i], q.poll());
635		}
636
637		/**
638	<	* toArray(a) contains all elements
638	>	* toArray(a) contains all elements in FIFO order
639		*/
640	<	public void testToArray2() {
641	<	LinkedBlockingQueue q = populatedQueue(SIZE);
642	<	Integer[] ints = new Integer[SIZE];
643	<	ints = (Integer[])q.toArray(ints);
644	<	try {
645	<	for (int i = 0; i < ints.length; i++)
646	<	assertEquals(ints[i], q.take());
736	<	} catch (InterruptedException e){
737	<	unexpectedException();
738	<	}
640	>	public void testToArray2() throws InterruptedException {
641	>	LinkedBlockingQueue<Integer> q = populatedQueue(SIZE);
642	>	Integer[] ints = new Integer[SIZE];
643	>	Integer[] array = q.toArray(ints);
644	>	assertSame(ints, array);
645	>	for (int i = 0; i < ints.length; i++)
646	>	assertSame(ints[i], q.poll());
647		}
648
649		/**
650	<	* toArray(null) throws NPE
650	>	* toArray(null) throws NullPointerException
651		*/
652	<	public void testToArray_BadArg() {
653	<	try {
654	<	LinkedBlockingQueue q = populatedQueue(SIZE);
655	<	Object o[] = q.toArray(null);
656	<	shouldThrow();
657	<	} catch (NullPointerException success){}
652	>	public void testToArray_NullArg() {
653	>	LinkedBlockingQueue q = populatedQueue(SIZE);
654	>	try {
655	>	q.toArray(null);
656	>	shouldThrow();
657	>	} catch (NullPointerException success) {}
658		}
659
660		/**
661	<	* toArray with incompatible array type throws CCE
661	>	* toArray(incompatible array type) throws ArrayStoreException
662		*/
663		public void testToArray1_BadArg() {
664	<	try {
665	<	LinkedBlockingQueue q = populatedQueue(SIZE);
666	<	Object o[] = q.toArray(new String[10] );
667	<	shouldThrow();
668	<	} catch (ArrayStoreException  success){}
664	>	LinkedBlockingQueue q = populatedQueue(SIZE);
665	>	try {
666	>	q.toArray(new String[10]);
667	>	shouldThrow();
668	>	} catch (ArrayStoreException success) {}
669		}
670
671
672		/**
673		* iterator iterates through all elements
674		*/
675	<	public void testIterator() {
675	>	public void testIterator() throws InterruptedException {
676		LinkedBlockingQueue q = populatedQueue(SIZE);
677	<	Iterator it = q.iterator();
678	<	try {
679	<	while (it.hasNext()){
680	<	assertEquals(it.next(), q.take());
773	<	}
774	<	} catch (InterruptedException e){
775	<	unexpectedException();
776	<	}
677	>	Iterator it = q.iterator();
678	>	while (it.hasNext()) {
679	>	assertEquals(it.next(), q.take());
680	>	}
681		}
682
683		/**
684		* iterator.remove removes current element
685		*/
686	<	public void testIteratorRemove () {
686	>	public void testIteratorRemove() {
687		final LinkedBlockingQueue q = new LinkedBlockingQueue(3);
688		q.add(two);
689		q.add(one);
#	Line 790 | Line 694 | public class LinkedBlockingQueueTest ext
694		it.remove();
695
696		it = q.iterator();
697	<	assertEquals(it.next(), one);
698	<	assertEquals(it.next(), three);
697	>	assertSame(it.next(), one);
698	>	assertSame(it.next(), three);
699		assertFalse(it.hasNext());
700		}
701
#	Line 807 | Line 711 | public class LinkedBlockingQueueTest ext
711		assertEquals(0, q.remainingCapacity());
712		int k = 0;
713		for (Iterator it = q.iterator(); it.hasNext();) {
714	<	int i = ((Integer)(it.next())).intValue();
811	<	assertEquals(++k, i);
714	>	assertEquals(++k, it.next());
715		}
716		assertEquals(3, k);
717		}
#	Line 816 | Line 719 | public class LinkedBlockingQueueTest ext
719		/**
720		* Modifications do not cause iterators to fail
721		*/
722	<	public void testWeaklyConsistentIteration () {
722	>	public void testWeaklyConsistentIteration() {
723		final LinkedBlockingQueue q = new LinkedBlockingQueue(3);
724		q.add(one);
725		q.add(two);
726		q.add(three);
727	<	try {
728	<	for (Iterator it = q.iterator(); it.hasNext();) {
729	<	q.remove();
827	<	it.next();
828	<	}
829	<	}
830	<	catch (ConcurrentModificationException e) {
831	<	unexpectedException();
727	>	for (Iterator it = q.iterator(); it.hasNext();) {
728	>	q.remove();
729	>	it.next();
730		}
731		assertEquals(0, q.size());
732		}
#	Line 854 | Line 752 | public class LinkedBlockingQueueTest ext
752		q.add(one);
753		q.add(two);
754		ExecutorService executor = Executors.newFixedThreadPool(2);
755	<	executor.execute(new Runnable() {
756	<	public void run() {
757	<	threadAssertFalse(q.offer(three));
758	<	try {
759	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
760	<	threadAssertEquals(0, q.remainingCapacity());
761	<	}
762	<	catch (InterruptedException e) {
763	<	threadUnexpectedException();
764	<	}
765	<	}
766	<	});
869	<
870	<	executor.execute(new Runnable() {
871	<	public void run() {
872	<	try {
873	<	Thread.sleep(SMALL_DELAY_MS);
874	<	threadAssertEquals(one, q.take());
875	<	}
876	<	catch (InterruptedException e) {
877	<	threadUnexpectedException();
878	<	}
879	<	}
880	<	});
755	>	executor.execute(new CheckedRunnable() {
756	>	public void realRun() throws InterruptedException {
757	>	assertFalse(q.offer(three));
758	>	assertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS));
759	>	assertEquals(0, q.remainingCapacity());
760	>	}});
761	>
762	>	executor.execute(new CheckedRunnable() {
763	>	public void realRun() throws InterruptedException {
764	>	delay(SMALL_DELAY_MS);
765	>	assertSame(one, q.take());
766	>	}});
767
768		joinPool(executor);
769		}
#	Line 888 | Line 774 | public class LinkedBlockingQueueTest ext
774		public void testPollInExecutor() {
775		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
776		ExecutorService executor = Executors.newFixedThreadPool(2);
777	<	executor.execute(new Runnable() {
778	<	public void run() {
779	<	threadAssertNull(q.poll());
780	<	try {
781	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
782	<	threadAssertTrue(q.isEmpty());
783	<	}
784	<	catch (InterruptedException e) {
785	<	threadUnexpectedException();
786	<	}
787	<	}
788	<	});
903	<
904	<	executor.execute(new Runnable() {
905	<	public void run() {
906	<	try {
907	<	Thread.sleep(SMALL_DELAY_MS);
908	<	q.put(one);
909	<	}
910	<	catch (InterruptedException e) {
911	<	threadUnexpectedException();
912	<	}
913	<	}
914	<	});
777	>	executor.execute(new CheckedRunnable() {
778	>	public void realRun() throws InterruptedException {
779	>	assertNull(q.poll());
780	>	assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
781	>	assertTrue(q.isEmpty());
782	>	}});
783	>
784	>	executor.execute(new CheckedRunnable() {
785	>	public void realRun() throws InterruptedException {
786	>	delay(SMALL_DELAY_MS);
787	>	q.put(one);
788	>	}});
789
790		joinPool(executor);
791		}
#	Line 919 | Line 793 | public class LinkedBlockingQueueTest ext
793		/**
794		* A deserialized serialized queue has same elements in same order
795		*/
796	<	public void testSerialization() {
796	>	public void testSerialization() throws Exception {
797		LinkedBlockingQueue q = populatedQueue(SIZE);
798
799	<	try {
800	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
801	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
802	<	out.writeObject(q);
803	<	out.close();
804	<
805	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
806	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
807	<	LinkedBlockingQueue r = (LinkedBlockingQueue)in.readObject();
808	<	assertEquals(q.size(), r.size());
809	<	while (!q.isEmpty())
936	<	assertEquals(q.remove(), r.remove());
937	<	} catch (Exception e){
938	<	unexpectedException();
939	<	}
799	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
800	>	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
801	>	out.writeObject(q);
802	>	out.close();
803	>
804	>	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
805	>	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
806	>	LinkedBlockingQueue r = (LinkedBlockingQueue)in.readObject();
807	>	assertEquals(q.size(), r.size());
808	>	while (!q.isEmpty())
809	>	assertEquals(q.remove(), r.remove());
810		}
811
812		/**
#	Line 947 | Line 817 | public class LinkedBlockingQueueTest ext
817		try {
818		q.drainTo(null);
819		shouldThrow();
820	<	} catch (NullPointerException success) {
951	<	}
820	>	} catch (NullPointerException success) {}
821		}
822
823		/**
#	Line 959 | Line 828 | public class LinkedBlockingQueueTest ext
828		try {
829		q.drainTo(q);
830		shouldThrow();
831	<	} catch (IllegalArgumentException success) {
963	<	}
831	>	} catch (IllegalArgumentException success) {}
832		}
833
834		/**
#	Line 990 | Line 858 | public class LinkedBlockingQueueTest ext
858		/**
859		* drainTo empties full queue, unblocking a waiting put.
860		*/
861	<	public void testDrainToWithActivePut() {
861	>	public void testDrainToWithActivePut() throws InterruptedException {
862		final LinkedBlockingQueue q = populatedQueue(SIZE);
863	<	Thread t = new Thread(new Runnable() {
864	<	public void run() {
865	<	try {
866	<	q.put(new Integer(SIZE+1));
867	<	} catch (InterruptedException ie){
868	<	threadUnexpectedException();
869	<	}
870	<	}
871	<	});
872	<	try {
873	<	t.start();
874	<	ArrayList l = new ArrayList();
875	<	q.drainTo(l);
1008	<	assertTrue(l.size() >= SIZE);
1009	<	for (int i = 0; i < SIZE; ++i)
1010	<	assertEquals(l.get(i), new Integer(i));
1011	<	t.join();
1012	<	assertTrue(q.size() + l.size() >= SIZE);
1013	<	} catch (Exception e){
1014	<	unexpectedException();
1015	<	}
863	>	Thread t = new Thread(new CheckedRunnable() {
864	>	public void realRun() throws InterruptedException {
865	>	q.put(new Integer(SIZE+1));
866	>	}});
867	>
868	>	t.start();
869	>	ArrayList l = new ArrayList();
870	>	q.drainTo(l);
871	>	assertTrue(l.size() >= SIZE);
872	>	for (int i = 0; i < SIZE; ++i)
873	>	assertEquals(l.get(i), new Integer(i));
874	>	t.join();
875	>	assertTrue(q.size() + l.size() >= SIZE);
876		}
877
878		/**
#	Line 1023 | Line 883 | public class LinkedBlockingQueueTest ext
883		try {
884		q.drainTo(null, 0);
885		shouldThrow();
886	<	} catch (NullPointerException success) {
1027	<	}
886	>	} catch (NullPointerException success) {}
887		}
888
889		/**
#	Line 1035 | Line 894 | public class LinkedBlockingQueueTest ext
894		try {
895		q.drainTo(q, 0);
896		shouldThrow();
897	<	} catch (IllegalArgumentException success) {
1039	<	}
897	>	} catch (IllegalArgumentException success) {}
898		}
899
900		/**
901	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
901	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
902		*/
903		public void testDrainToN() {
904		LinkedBlockingQueue q = new LinkedBlockingQueue();
#	Line 1049 | Line 907 | public class LinkedBlockingQueueTest ext
907		assertTrue(q.offer(new Integer(j)));
908		ArrayList l = new ArrayList();
909		q.drainTo(l, i);
910	<	int k = (i < SIZE)? i : SIZE;
910	>	int k = (i < SIZE) ? i : SIZE;
911		assertEquals(l.size(), k);
912		assertEquals(q.size(), SIZE-k);
913		for (int j = 0; j < k; ++j)

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