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

Comparing jsr166/src/test/tck/LinkedBlockingQueueTest.java (file contents):
Revision 1.16 by jsr166, Sat Nov 21 02:33:20 2009 UTC vs.
Revision 1.41 by jsr166, Thu Apr 14 22:55:08 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 14 | Line 14 | 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 27 | 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)));
#	Line 48 | 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	<	}
58	<	catch (IllegalArgumentException success) {}
72	>	} catch (IllegalArgumentException success) {}
73		}
74
75		/**
#	Line 65 | Line 79 | public class LinkedBlockingQueueTest ext
79		try {
80		LinkedBlockingQueue q = new LinkedBlockingQueue(null);
81		shouldThrow();
82	<	}
69	<	catch (NullPointerException success) {}
82	>	} catch (NullPointerException success) {}
83		}
84
85		/**
#	Line 77 | Line 90 | public class LinkedBlockingQueueTest ext
90		Integer[] ints = new Integer[SIZE];
91		LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints));
92		shouldThrow();
93	<	}
81	<	catch (NullPointerException success) {}
93	>	} catch (NullPointerException success) {}
94		}
95
96		/**
#	Line 91 | Line 103 | public class LinkedBlockingQueueTest ext
103		ints[i] = new Integer(i);
104		LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints));
105		shouldThrow();
106	<	}
95	<	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)
108	<	assertEquals(ints[i], q.poll());
109	<	}
110	<	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 150 | Line 158 | public class LinkedBlockingQueueTest ext
158		LinkedBlockingQueue q = new LinkedBlockingQueue(1);
159		q.offer(null);
160		shouldThrow();
161	<	} catch (NullPointerException success) { }
161	>	} catch (NullPointerException success) {}
162		}
163
164		/**
#	Line 161 | Line 169 | public class LinkedBlockingQueueTest ext
169		LinkedBlockingQueue q = new LinkedBlockingQueue(1);
170		q.add(null);
171		shouldThrow();
172	<	} catch (NullPointerException success) { }
172	>	} catch (NullPointerException success) {}
173		}
174
175		/**
#	Line 184 | Line 192 | public class LinkedBlockingQueueTest ext
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 196 | Line 204 | public class LinkedBlockingQueueTest ext
204		LinkedBlockingQueue q = new LinkedBlockingQueue(1);
205		q.addAll(null);
206		shouldThrow();
207	<	}
200	<	catch (NullPointerException success) {}
207	>	} catch (NullPointerException success) {}
208		}
209
210		/**
#	Line 208 | Line 215 | public class LinkedBlockingQueueTest ext
215		LinkedBlockingQueue q = populatedQueue(SIZE);
216		q.addAll(q);
217		shouldThrow();
218	<	}
212	<	catch (IllegalArgumentException success) {}
218	>	} catch (IllegalArgumentException success) {}
219		}
220
221		/**
#	Line 221 | Line 227 | public class LinkedBlockingQueueTest ext
227		Integer[] ints = new Integer[SIZE];
228		q.addAll(Arrays.asList(ints));
229		shouldThrow();
230	<	}
225	<	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 236 | Line 242 | public class LinkedBlockingQueueTest ext
242		ints[i] = new Integer(i);
243		q.addAll(Arrays.asList(ints));
244		shouldThrow();
245	<	}
240	<	catch (NullPointerException success) {}
245	>	} catch (NullPointerException success) {}
246		}
247	+
248		/**
249		* addAll throws ISE if not enough room
250		*/
#	Line 250 | Line 256 | public class LinkedBlockingQueueTest ext
256		ints[i] = new Integer(i);
257		q.addAll(Arrays.asList(ints));
258		shouldThrow();
259	<	}
254	<	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)
269	<	assertEquals(ints[i], q.poll());
270	<	}
271	<	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() {
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) {
284	<	}
285	<	catch (InterruptedException ie) {
286	<	unexpectedException();
287	<	}
288	<	}
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);
299	<	assertTrue(q.contains(I));
300	<	}
301	<	assertEquals(0, q.remainingCapacity());
302	<	}
303	<	catch (InterruptedException ie) {
304	<	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);
325	<	}
326	<	}});
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	<	}
333	<	catch (InterruptedException ie) {
334	<	unexpectedException();
335	<	}
319	>	Thread.sleep(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	<	});
361	<	try {
362	<	t.start();
363	<	Thread.sleep(SHORT_DELAY_MS);
364	<	q.take();
365	<	t.interrupt();
366	<	t.join();
367	<	} catch (Exception e) {
368	<	unexpectedException();
369	<	}
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	>	Thread.sleep(SHORT_DELAY_MS);
344	>	assertEquals(q.remainingCapacity(), 0);
345	>	assertEquals(0, q.take());
346	>	Thread.sleep(SHORT_DELAY_MS);
347	>	t.interrupt();
348	>	t.join();
349	>	assertEquals(q.remainingCapacity(), 0);
350		}
351
352		/**
353		* timed offer times out if full and elements not taken
354		*/
355	<	public void testTimedOffer() {
355	>	public void testTimedOffer() throws InterruptedException {
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, MILLISECONDS));
363	<	q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS);
364	<	threadShouldThrow();
365	<	} catch (InterruptedException success) {}
366	<	}
387	<	});
357	>	Thread t = new Thread(new CheckedRunnable() {
358	>	public void realRun() throws InterruptedException {
359	>	q.put(new Object());
360	>	q.put(new Object());
361	>	assertFalse(q.offer(new Object(), SHORT_DELAY_MS, MILLISECONDS));
362	>	try {
363	>	q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS);
364	>	shouldThrow();
365	>	} catch (InterruptedException success) {}
366	>	}});
367
368	<	try {
369	<	t.start();
370	<	Thread.sleep(SMALL_DELAY_MS);
371	<	t.interrupt();
393	<	t.join();
394	<	} catch (Exception e) {
395	<	unexpectedException();
396	<	}
368	>	t.start();
369	>	Thread.sleep(SMALL_DELAY_MS);
370	>	t.interrupt();
371	>	t.join();
372		}
373
374		/**
375		* take retrieves elements in FIFO order
376		*/
377	<	public void testTake() {
378	<	try {
379	<	LinkedBlockingQueue q = populatedQueue(SIZE);
380	<	for (int i = 0; i < SIZE; ++i) {
406	<	assertEquals(i, ((Integer)q.take()).intValue());
407	<	}
408	<	} catch (InterruptedException e) {
409	<	unexpectedException();
377	>	public void testTake() throws InterruptedException {
378	>	LinkedBlockingQueue q = populatedQueue(SIZE);
379	>	for (int i = 0; i < SIZE; ++i) {
380	>	assertEquals(i, q.take());
381		}
382		}
383
384		/**
385	<	* take blocks interruptibly when empty
385	>	* Take removes existing elements until empty, then blocks interruptibly
386		*/
387	<	public void testTakeFromEmpty() {
388	<	final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
389	<	Thread t = new Thread(new Runnable() {
390	<	public void run() {
391	<	try {
392	<	q.take();
422	<	threadShouldThrow();
423	<	} catch (InterruptedException success) { }
387	>	public void testBlockingTake() throws InterruptedException {
388	>	final LinkedBlockingQueue q = populatedQueue(SIZE);
389	>	Thread t = new Thread(new CheckedRunnable() {
390	>	public void realRun() throws InterruptedException {
391	>	for (int i = 0; i < SIZE; ++i) {
392	>	assertEquals(i, q.take());
393		}
394	<	});
395	<	try {
396	<	t.start();
397	<	Thread.sleep(SHORT_DELAY_MS);
398	<	t.interrupt();
430	<	t.join();
431	<	} catch (Exception e) {
432	<	unexpectedException();
433	<	}
434	<	}
394	>	try {
395	>	q.take();
396	>	shouldThrow();
397	>	} catch (InterruptedException success) {}
398	>	}});
399
436	–	/**
437	–	* Take removes existing elements until empty, then blocks interruptibly
438	–	*/
439	–	public void testBlockingTake() {
440	–	Thread t = new Thread(new Runnable() {
441	–	public void run() {
442	–	try {
443	–	LinkedBlockingQueue q = populatedQueue(SIZE);
444	–	for (int i = 0; i < SIZE; ++i) {
445	–	assertEquals(i, ((Integer)q.take()).intValue());
446	–	}
447	–	q.take();
448	–	threadShouldThrow();
449	–	} catch (InterruptedException success) {
450	–	}
451	–	}});
400		t.start();
401	<	try {
402	<	Thread.sleep(SHORT_DELAY_MS);
403	<	t.interrupt();
456	<	t.join();
457	<	}
458	<	catch (InterruptedException ie) {
459	<	unexpectedException();
460	<	}
401	>	Thread.sleep(SHORT_DELAY_MS);
402	>	t.interrupt();
403	>	t.join();
404		}
405
463	–
406		/**
407		* poll succeeds unless empty
408		*/
409		public void testPoll() {
410		LinkedBlockingQueue q = populatedQueue(SIZE);
411		for (int i = 0; i < SIZE; ++i) {
412	<	assertEquals(i, ((Integer)q.poll()).intValue());
412	>	assertEquals(i, q.poll());
413		}
414		assertNull(q.poll());
415		}
416
417		/**
418	<	* timed pool with zero timeout succeeds when non-empty, else times out
418	>	* timed poll with zero timeout succeeds when non-empty, else times out
419		*/
420	<	public void testTimedPoll0() {
421	<	try {
422	<	LinkedBlockingQueue q = populatedQueue(SIZE);
423	<	for (int i = 0; i < SIZE; ++i) {
482	<	assertEquals(i, ((Integer)q.poll(0, MILLISECONDS)).intValue());
483	<	}
484	<	assertNull(q.poll(0, MILLISECONDS));
485	<	} catch (InterruptedException e) {
486	<	unexpectedException();
420	>	public void testTimedPoll0() throws InterruptedException {
421	>	LinkedBlockingQueue q = populatedQueue(SIZE);
422	>	for (int i = 0; i < SIZE; ++i) {
423	>	assertEquals(i, q.poll(0, MILLISECONDS));
424		}
425	+	assertNull(q.poll(0, MILLISECONDS));
426		}
427
428		/**
429	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
429	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
430		*/
431	<	public void testTimedPoll() {
432	<	try {
433	<	LinkedBlockingQueue q = populatedQueue(SIZE);
434	<	for (int i = 0; i < SIZE; ++i) {
497	<	assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, MILLISECONDS)).intValue());
498	<	}
499	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
500	<	} catch (InterruptedException e) {
501	<	unexpectedException();
431	>	public void testTimedPoll() throws InterruptedException {
432	>	LinkedBlockingQueue q = populatedQueue(SIZE);
433	>	for (int i = 0; i < SIZE; ++i) {
434	>	assertEquals(i, q.poll(SHORT_DELAY_MS, MILLISECONDS));
435		}
436	+	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
437		}
438
439		/**
440		* Interrupted timed poll throws InterruptedException instead of
441		* returning timeout status
442		*/
443	<	public void testInterruptedTimedPoll() {
444	<	Thread t = new Thread(new Runnable() {
445	<	public void run() {
446	<	try {
447	<	LinkedBlockingQueue q = populatedQueue(SIZE);
448	<	for (int i = 0; i < SIZE; ++i) {
449	<	threadAssertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, MILLISECONDS)).intValue());
450	<	}
451	<	threadAssertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
518	<	} catch (InterruptedException success) {
519	<	}
520	<	}});
521	<	t.start();
522	<	try {
523	<	Thread.sleep(SHORT_DELAY_MS);
524	<	t.interrupt();
525	<	t.join();
526	<	}
527	<	catch (InterruptedException ie) {
528	<	unexpectedException();
529	<	}
530	<	}
531	<
532	<	/**
533	<	*  timed poll before a delayed offer fails; after offer succeeds;
534	<	*  on interruption throws
535	<	*/
536	<	public void testTimedPollWithOffer() {
537	<	final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
538	<	Thread t = new Thread(new Runnable() {
539	<	public void run() {
540	<	try {
541	<	threadAssertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
542	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
543	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
544	<	threadShouldThrow();
545	<	} catch (InterruptedException success) { }
443	>	public void testInterruptedTimedPoll() throws InterruptedException {
444	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
445	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
446	>	Thread t = newStartedThread(new CheckedRunnable() {
447	>	public void realRun() throws InterruptedException {
448	>	for (int i = 0; i < SIZE; ++i) {
449	>	long t0 = System.nanoTime();
450	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
451	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
452		}
453	<	});
454	<	try {
455	<	t.start();
456	<	Thread.sleep(SMALL_DELAY_MS);
457	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
458	<	t.interrupt();
459	<	t.join();
460	<	} catch (Exception e) {
461	<	unexpectedException();
462	<	}
453	>	long t0 = System.nanoTime();
454	>	aboutToWait.countDown();
455	>	try {
456	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
457	>	shouldThrow();
458	>	} catch (InterruptedException success) {
459	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
460	>	}
461	>	}});
462	>
463	>	aboutToWait.await();
464	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
465	>	t.interrupt();
466	>	awaitTermination(t, MEDIUM_DELAY_MS);
467	>	checkEmpty(q);
468		}
469
470		/**
#	Line 562 | Line 473 | public class LinkedBlockingQueueTest ext
473		public void testPeek() {
474		LinkedBlockingQueue q = populatedQueue(SIZE);
475		for (int i = 0; i < SIZE; ++i) {
476	<	assertEquals(i, ((Integer)q.peek()).intValue());
477	<	q.poll();
476	>	assertEquals(i, q.peek());
477	>	assertEquals(i, q.poll());
478		assertTrue(q.peek() == null ||
479	<	i != ((Integer)q.peek()).intValue());
479	>	!q.peek().equals(i));
480		}
481		assertNull(q.peek());
482		}
#	Line 576 | Line 487 | public class LinkedBlockingQueueTest ext
487		public void testElement() {
488		LinkedBlockingQueue q = populatedQueue(SIZE);
489		for (int i = 0; i < SIZE; ++i) {
490	<	assertEquals(i, ((Integer)q.element()).intValue());
491	<	q.poll();
490	>	assertEquals(i, q.element());
491	>	assertEquals(i, q.poll());
492		}
493		try {
494		q.element();
495		shouldThrow();
496	<	}
586	<	catch (NoSuchElementException success) {}
496	>	} catch (NoSuchElementException success) {}
497		}
498
499		/**
#	Line 592 | Line 502 | public class LinkedBlockingQueueTest ext
502		public void testRemove() {
503		LinkedBlockingQueue q = populatedQueue(SIZE);
504		for (int i = 0; i < SIZE; ++i) {
505	<	assertEquals(i, ((Integer)q.remove()).intValue());
505	>	assertEquals(i, q.remove());
506		}
507		try {
508		q.remove();
509		shouldThrow();
510	<	} catch (NoSuchElementException success) {
601	<	}
510	>	} catch (NoSuchElementException success) {}
511		}
512
513		/**
#	Line 607 | Line 516 | public class LinkedBlockingQueueTest ext
516		public void testRemoveElement() {
517		LinkedBlockingQueue q = populatedQueue(SIZE);
518		for (int i = 1; i < SIZE; i+=2) {
519	<	assertTrue(q.remove(new Integer(i)));
519	>	assertTrue(q.contains(i));
520	>	assertTrue(q.remove(i));
521	>	assertFalse(q.contains(i));
522	>	assertTrue(q.contains(i-1));
523		}
524		for (int i = 0; i < SIZE; i+=2) {
525	<	assertTrue(q.remove(new Integer(i)));
526	<	assertFalse(q.remove(new Integer(i+1)));
525	>	assertTrue(q.contains(i));
526	>	assertTrue(q.remove(i));
527	>	assertFalse(q.contains(i));
528	>	assertFalse(q.remove(i+1));
529	>	assertFalse(q.contains(i+1));
530		}
531		assertTrue(q.isEmpty());
532		}
#	Line 619 | Line 534 | public class LinkedBlockingQueueTest ext
534		/**
535		* An add following remove(x) succeeds
536		*/
537	<	public void testRemoveElementAndAdd() {
538	<	try {
539	<	LinkedBlockingQueue q = new LinkedBlockingQueue();
540	<	assertTrue(q.add(new Integer(1)));
541	<	assertTrue(q.add(new Integer(2)));
542	<	assertTrue(q.remove(new Integer(1)));
543	<	assertTrue(q.remove(new Integer(2)));
544	<	assertTrue(q.add(new Integer(3)));
630	<	assertTrue(q.take() != null);
631	<	} catch (Exception e) {
632	<	unexpectedException();
633	<	}
537	>	public void testRemoveElementAndAdd() throws InterruptedException {
538	>	LinkedBlockingQueue q = new LinkedBlockingQueue();
539	>	assertTrue(q.add(new Integer(1)));
540	>	assertTrue(q.add(new Integer(2)));
541	>	assertTrue(q.remove(new Integer(1)));
542	>	assertTrue(q.remove(new Integer(2)));
543	>	assertTrue(q.add(new Integer(3)));
544	>	assertTrue(q.take() != null);
545		}
546
547		/**
#	Line 711 | Line 622 | public class LinkedBlockingQueueTest ext
622		}
623
624		/**
625	<	* toArray contains all elements
625	>	* toArray contains all elements in FIFO order
626		*/
627		public void testToArray() {
628		LinkedBlockingQueue q = populatedQueue(SIZE);
629		Object[] o = q.toArray();
719	–	try {
630		for (int i = 0; i < o.length; i++)
631	<	assertEquals(o[i], q.take());
722	<	} catch (InterruptedException e) {
723	<	unexpectedException();
724	<	}
631	>	assertSame(o[i], q.poll());
632		}
633
634		/**
635	<	* toArray(a) contains all elements
635	>	* toArray(a) contains all elements in FIFO order
636		*/
637	<	public void testToArray2() {
638	<	LinkedBlockingQueue q = populatedQueue(SIZE);
637	>	public void testToArray2() throws InterruptedException {
638	>	LinkedBlockingQueue<Integer> q = populatedQueue(SIZE);
639		Integer[] ints = new Integer[SIZE];
640	<	ints = (Integer[])q.toArray(ints);
641	<	try {
642	<	for (int i = 0; i < ints.length; i++)
643	<	assertEquals(ints[i], q.take());
737	<	} catch (InterruptedException e) {
738	<	unexpectedException();
739	<	}
640	>	Integer[] array = q.toArray(ints);
641	>	assertSame(ints, array);
642	>	for (int i = 0; i < ints.length; i++)
643	>	assertSame(ints[i], q.poll());
644		}
645
646		/**
647	<	* toArray(null) throws NPE
647	>	* toArray(null) throws NullPointerException
648		*/
649	<	public void testToArray_BadArg() {
649	>	public void testToArray_NullArg() {
650	>	LinkedBlockingQueue q = populatedQueue(SIZE);
651		try {
652	<	LinkedBlockingQueue q = populatedQueue(SIZE);
748	<	Object o[] = q.toArray(null);
652	>	q.toArray(null);
653		shouldThrow();
654		} catch (NullPointerException success) {}
655		}
656
657		/**
658	<	* toArray with incompatible array type throws CCE
658	>	* toArray(incompatible array type) throws ArrayStoreException
659		*/
660		public void testToArray1_BadArg() {
661	+	LinkedBlockingQueue q = populatedQueue(SIZE);
662		try {
663	<	LinkedBlockingQueue q = populatedQueue(SIZE);
759	<	Object o[] = q.toArray(new String[10] );
663	>	q.toArray(new String[10]);
664		shouldThrow();
665	<	} catch (ArrayStoreException  success) {}
665	>	} catch (ArrayStoreException success) {}
666		}
667
668
669		/**
670		* iterator iterates through all elements
671		*/
672	<	public void testIterator() {
672	>	public void testIterator() throws InterruptedException {
673		LinkedBlockingQueue q = populatedQueue(SIZE);
674		Iterator it = q.iterator();
675	<	try {
676	<	while (it.hasNext()) {
773	<	assertEquals(it.next(), q.take());
774	<	}
775	<	} catch (InterruptedException e) {
776	<	unexpectedException();
675	>	while (it.hasNext()) {
676	>	assertEquals(it.next(), q.take());
677		}
678		}
679
680		/**
681		* iterator.remove removes current element
682		*/
683	<	public void testIteratorRemove () {
683	>	public void testIteratorRemove() {
684		final LinkedBlockingQueue q = new LinkedBlockingQueue(3);
685		q.add(two);
686		q.add(one);
#	Line 791 | Line 691 | public class LinkedBlockingQueueTest ext
691		it.remove();
692
693		it = q.iterator();
694	<	assertEquals(it.next(), one);
695	<	assertEquals(it.next(), three);
694	>	assertSame(it.next(), one);
695	>	assertSame(it.next(), three);
696		assertFalse(it.hasNext());
697		}
698
#	Line 808 | Line 708 | public class LinkedBlockingQueueTest ext
708		assertEquals(0, q.remainingCapacity());
709		int k = 0;
710		for (Iterator it = q.iterator(); it.hasNext();) {
711	<	int i = ((Integer)(it.next())).intValue();
812	<	assertEquals(++k, i);
711	>	assertEquals(++k, it.next());
712		}
713		assertEquals(3, k);
714		}
#	Line 817 | Line 716 | public class LinkedBlockingQueueTest ext
716		/**
717		* Modifications do not cause iterators to fail
718		*/
719	<	public void testWeaklyConsistentIteration () {
719	>	public void testWeaklyConsistentIteration() {
720		final LinkedBlockingQueue q = new LinkedBlockingQueue(3);
721		q.add(one);
722		q.add(two);
723		q.add(three);
724	<	try {
725	<	for (Iterator it = q.iterator(); it.hasNext();) {
726	<	q.remove();
828	<	it.next();
829	<	}
830	<	}
831	<	catch (ConcurrentModificationException e) {
832	<	unexpectedException();
724	>	for (Iterator it = q.iterator(); it.hasNext();) {
725	>	q.remove();
726	>	it.next();
727		}
728		assertEquals(0, q.size());
729		}
#	Line 855 | Line 749 | public class LinkedBlockingQueueTest ext
749		q.add(one);
750		q.add(two);
751		ExecutorService executor = Executors.newFixedThreadPool(2);
752	<	executor.execute(new Runnable() {
753	<	public void run() {
754	<	threadAssertFalse(q.offer(three));
755	<	try {
756	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS));
757	<	threadAssertEquals(0, q.remainingCapacity());
758	<	}
759	<	catch (InterruptedException e) {
760	<	threadUnexpectedException();
761	<	}
762	<	}
763	<	});
870	<
871	<	executor.execute(new Runnable() {
872	<	public void run() {
873	<	try {
874	<	Thread.sleep(SMALL_DELAY_MS);
875	<	threadAssertEquals(one, q.take());
876	<	}
877	<	catch (InterruptedException e) {
878	<	threadUnexpectedException();
879	<	}
880	<	}
881	<	});
752	>	executor.execute(new CheckedRunnable() {
753	>	public void realRun() throws InterruptedException {
754	>	assertFalse(q.offer(three));
755	>	assertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS));
756	>	assertEquals(0, q.remainingCapacity());
757	>	}});
758	>
759	>	executor.execute(new CheckedRunnable() {
760	>	public void realRun() throws InterruptedException {
761	>	Thread.sleep(SMALL_DELAY_MS);
762	>	assertSame(one, q.take());
763	>	}});
764
765		joinPool(executor);
766		}
#	Line 889 | Line 771 | public class LinkedBlockingQueueTest ext
771		public void testPollInExecutor() {
772		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
773		ExecutorService executor = Executors.newFixedThreadPool(2);
774	<	executor.execute(new Runnable() {
775	<	public void run() {
776	<	threadAssertNull(q.poll());
777	<	try {
778	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
779	<	threadAssertTrue(q.isEmpty());
780	<	}
781	<	catch (InterruptedException e) {
782	<	threadUnexpectedException();
783	<	}
784	<	}
785	<	});
904	<
905	<	executor.execute(new Runnable() {
906	<	public void run() {
907	<	try {
908	<	Thread.sleep(SMALL_DELAY_MS);
909	<	q.put(one);
910	<	}
911	<	catch (InterruptedException e) {
912	<	threadUnexpectedException();
913	<	}
914	<	}
915	<	});
774	>	executor.execute(new CheckedRunnable() {
775	>	public void realRun() throws InterruptedException {
776	>	assertNull(q.poll());
777	>	assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
778	>	assertTrue(q.isEmpty());
779	>	}});
780	>
781	>	executor.execute(new CheckedRunnable() {
782	>	public void realRun() throws InterruptedException {
783	>	Thread.sleep(SMALL_DELAY_MS);
784	>	q.put(one);
785	>	}});
786
787		joinPool(executor);
788		}
#	Line 920 | Line 790 | public class LinkedBlockingQueueTest ext
790		/**
791		* A deserialized serialized queue has same elements in same order
792		*/
793	<	public void testSerialization() {
793	>	public void testSerialization() throws Exception {
794		LinkedBlockingQueue q = populatedQueue(SIZE);
795
796	<	try {
797	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
798	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
799	<	out.writeObject(q);
800	<	out.close();
801	<
802	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
803	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
804	<	LinkedBlockingQueue r = (LinkedBlockingQueue)in.readObject();
805	<	assertEquals(q.size(), r.size());
806	<	while (!q.isEmpty())
937	<	assertEquals(q.remove(), r.remove());
938	<	} catch (Exception e) {
939	<	unexpectedException();
940	<	}
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	>	LinkedBlockingQueue r = (LinkedBlockingQueue)in.readObject();
804	>	assertEquals(q.size(), r.size());
805	>	while (!q.isEmpty())
806	>	assertEquals(q.remove(), r.remove());
807		}
808
809		/**
#	Line 948 | Line 814 | public class LinkedBlockingQueueTest ext
814		try {
815		q.drainTo(null);
816		shouldThrow();
817	<	} catch (NullPointerException success) {
952	<	}
817	>	} catch (NullPointerException success) {}
818		}
819
820		/**
#	Line 960 | Line 825 | public class LinkedBlockingQueueTest ext
825		try {
826		q.drainTo(q);
827		shouldThrow();
828	<	} catch (IllegalArgumentException success) {
964	<	}
828	>	} catch (IllegalArgumentException success) {}
829		}
830
831		/**
#	Line 991 | Line 855 | public class LinkedBlockingQueueTest ext
855		/**
856		* drainTo empties full queue, unblocking a waiting put.
857		*/
858	<	public void testDrainToWithActivePut() {
858	>	public void testDrainToWithActivePut() throws InterruptedException {
859		final LinkedBlockingQueue q = populatedQueue(SIZE);
860	<	Thread t = new Thread(new Runnable() {
861	<	public void run() {
862	<	try {
863	<	q.put(new Integer(SIZE+1));
864	<	} catch (InterruptedException ie) {
865	<	threadUnexpectedException();
866	<	}
867	<	}
868	<	});
869	<	try {
870	<	t.start();
871	<	ArrayList l = new ArrayList();
872	<	q.drainTo(l);
1009	<	assertTrue(l.size() >= SIZE);
1010	<	for (int i = 0; i < SIZE; ++i)
1011	<	assertEquals(l.get(i), new Integer(i));
1012	<	t.join();
1013	<	assertTrue(q.size() + l.size() >= SIZE);
1014	<	} catch (Exception e) {
1015	<	unexpectedException();
1016	<	}
860	>	Thread t = new Thread(new CheckedRunnable() {
861	>	public void realRun() throws InterruptedException {
862	>	q.put(new Integer(SIZE+1));
863	>	}});
864	>
865	>	t.start();
866	>	ArrayList l = new ArrayList();
867	>	q.drainTo(l);
868	>	assertTrue(l.size() >= SIZE);
869	>	for (int i = 0; i < SIZE; ++i)
870	>	assertEquals(l.get(i), new Integer(i));
871	>	t.join();
872	>	assertTrue(q.size() + l.size() >= SIZE);
873		}
874
875		/**
#	Line 1024 | Line 880 | public class LinkedBlockingQueueTest ext
880		try {
881		q.drainTo(null, 0);
882		shouldThrow();
883	<	} catch (NullPointerException success) {
1028	<	}
883	>	} catch (NullPointerException success) {}
884		}
885
886		/**
#	Line 1036 | Line 891 | public class LinkedBlockingQueueTest ext
891		try {
892		q.drainTo(q, 0);
893		shouldThrow();
894	<	} catch (IllegalArgumentException success) {
1040	<	}
894	>	} catch (IllegalArgumentException success) {}
895		}
896
897		/**
898	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
898	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
899		*/
900		public void testDrainToN() {
901		LinkedBlockingQueue q = new LinkedBlockingQueue();
#	Line 1050 | Line 904 | public class LinkedBlockingQueueTest ext
904		assertTrue(q.offer(new Integer(j)));
905		ArrayList l = new ArrayList();
906		q.drainTo(l, i);
907	<	int k = (i < SIZE)? i : SIZE;
907	>	int k = (i < SIZE) ? i : SIZE;
908		assertEquals(l.size(), k);
909		assertEquals(q.size(), SIZE-k);
910		for (int j = 0; j < k; ++j)

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