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

Comparing jsr166/src/test/tck/LinkedBlockingQueueTest.java (file contents):
Revision 1.6 by dl, Sun Oct 5 23:00:40 2003 UTC vs.
Revision 1.28 by dl, Wed Sep 29 12:33:48 2010 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
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
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
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 void main(String[] args) {
18	<	junit.textui.TestRunner.run (suite());
18	>	junit.textui.TestRunner.run(suite());
19		}
20
21		public static Test suite() {
22	<	return new TestSuite(LinkedBlockingQueueTest.class);
22	>	return new TestSuite(LinkedBlockingQueueTest.class);
23		}
24
25
#	Line 28 | Line 30 | public class LinkedBlockingQueueTest ext
30		private LinkedBlockingQueue populatedQueue(int n) {
31		LinkedBlockingQueue q = new LinkedBlockingQueue(n);
32		assertTrue(q.isEmpty());
33	<	for(int i = 0; i < n; i++)
34	<	assertTrue(q.offer(new Integer(i)));
33	>	for (int i = 0; i < n; i++)
34	>	assertTrue(q.offer(new Integer(i)));
35		assertFalse(q.isEmpty());
36		assertEquals(0, q.remainingCapacity());
37	<	assertEquals(n, q.size());
37	>	assertEquals(n, q.size());
38		return q;
39		}
40	<
40	>
41		/**
42		* A new queue has the indicated capacity, or Integer.MAX_VALUE if
43		* none given
#	Line 46 | Line 48 | public class LinkedBlockingQueueTest ext
48		}
49
50		/**
51	<	* Constructor throws IAE if  capacity argument nonpositive
51	>	* Constructor throws IAE if capacity argument nonpositive
52		*/
53		public void testConstructor2() {
54		try {
55		LinkedBlockingQueue q = new LinkedBlockingQueue(0);
56		shouldThrow();
57	<	}
56	<	catch (IllegalArgumentException success) {}
57	>	} catch (IllegalArgumentException success) {}
58		}
59
60		/**
#	Line 63 | Line 64 | public class LinkedBlockingQueueTest ext
64		try {
65		LinkedBlockingQueue q = new LinkedBlockingQueue(null);
66		shouldThrow();
67	<	}
67	<	catch (NullPointerException success) {}
67	>	} catch (NullPointerException success) {}
68		}
69
70		/**
#	Line 75 | Line 75 | public class LinkedBlockingQueueTest ext
75		Integer[] ints = new Integer[SIZE];
76		LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints));
77		shouldThrow();
78	<	}
79	<	catch (NullPointerException success) {}
78	>	} catch (NullPointerException success) {}
79		}
80
81		/**
#	Line 89 | Line 88 | public class LinkedBlockingQueueTest ext
88		ints[i] = new Integer(i);
89		LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints));
90		shouldThrow();
91	<	}
93	<	catch (NullPointerException success) {}
91	>	} catch (NullPointerException success) {}
92		}
93
94		/**
95		* Queue contains all elements of collection used to initialize
96		*/
97		public void testConstructor6() {
98	<	try {
99	<	Integer[] ints = new Integer[SIZE];
100	<	for (int i = 0; i < SIZE; ++i)
101	<	ints[i] = new Integer(i);
102	<	LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints));
103	<	for (int i = 0; i < SIZE; ++i)
106	<	assertEquals(ints[i], q.poll());
107	<	}
108	<	finally {}
98	>	Integer[] ints = new Integer[SIZE];
99	>	for (int i = 0; i < SIZE; ++i)
100	>	ints[i] = new Integer(i);
101	>	LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints));
102	>	for (int i = 0; i < SIZE; ++i)
103	>	assertEquals(ints[i], q.poll());
104		}
105
106		/**
#	Line 144 | Line 139 | public class LinkedBlockingQueueTest ext
139		* offer(null) throws NPE
140		*/
141		public void testOfferNull() {
142	<	try {
142	>	try {
143		LinkedBlockingQueue q = new LinkedBlockingQueue(1);
144		q.offer(null);
145		shouldThrow();
146	<	} catch (NullPointerException success) { }
146	>	} catch (NullPointerException success) {}
147		}
148
149		/**
150		* add(null) throws NPE
151		*/
152		public void testAddNull() {
153	<	try {
153	>	try {
154		LinkedBlockingQueue q = new LinkedBlockingQueue(1);
155		q.add(null);
156		shouldThrow();
157	<	} catch (NullPointerException success) { }
157	>	} catch (NullPointerException success) {}
158		}
159
160		/**
#	Line 175 | Line 170 | public class LinkedBlockingQueueTest ext
170		* add succeeds if not full; throws ISE if full
171		*/
172		public void testAdd() {
173	<	try {
173	>	try {
174		LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
175		for (int i = 0; i < SIZE; ++i) {
176		assertTrue(q.add(new Integer(i)));
177		}
178		assertEquals(0, q.remainingCapacity());
179		q.add(new Integer(SIZE));
180	<	} catch (IllegalStateException success){
181	<	}
180	>	shouldThrow();
181	>	} catch (IllegalStateException success) {}
182		}
183
184		/**
#	Line 194 | Line 189 | public class LinkedBlockingQueueTest ext
189		LinkedBlockingQueue q = new LinkedBlockingQueue(1);
190		q.addAll(null);
191		shouldThrow();
192	<	}
198	<	catch (NullPointerException success) {}
192	>	} catch (NullPointerException success) {}
193		}
194
195		/**
#	Line 206 | Line 200 | public class LinkedBlockingQueueTest ext
200		LinkedBlockingQueue q = populatedQueue(SIZE);
201		q.addAll(q);
202		shouldThrow();
203	<	}
210	<	catch (IllegalArgumentException success) {}
203	>	} catch (IllegalArgumentException success) {}
204		}
205
206		/**
#	Line 219 | Line 212 | public class LinkedBlockingQueueTest ext
212		Integer[] ints = new Integer[SIZE];
213		q.addAll(Arrays.asList(ints));
214		shouldThrow();
215	<	}
223	<	catch (NullPointerException success) {}
215	>	} catch (NullPointerException success) {}
216		}
217	+
218		/**
219		* addAll of a collection with any null elements throws NPE after
220		* possibly adding some elements
#	Line 234 | Line 227 | public class LinkedBlockingQueueTest ext
227		ints[i] = new Integer(i);
228		q.addAll(Arrays.asList(ints));
229		shouldThrow();
230	<	}
238	<	catch (NullPointerException success) {}
230	>	} catch (NullPointerException success) {}
231		}
232	+
233		/**
234		* addAll throws ISE if not enough room
235		*/
#	Line 248 | Line 241 | public class LinkedBlockingQueueTest ext
241		ints[i] = new Integer(i);
242		q.addAll(Arrays.asList(ints));
243		shouldThrow();
244	<	}
252	<	catch (IllegalStateException success) {}
244	>	} catch (IllegalStateException success) {}
245		}
246	+
247		/**
248		* Queue contains all elements, in traversal order, of successful addAll
249		*/
250		public void testAddAll5() {
251	<	try {
252	<	Integer[] empty = new Integer[0];
253	<	Integer[] ints = new Integer[SIZE];
254	<	for (int i = 0; i < SIZE; ++i)
255	<	ints[i] = new Integer(i);
256	<	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
257	<	assertFalse(q.addAll(Arrays.asList(empty)));
258	<	assertTrue(q.addAll(Arrays.asList(ints)));
259	<	for (int i = 0; i < SIZE; ++i)
267	<	assertEquals(ints[i], q.poll());
268	<	}
269	<	finally {}
251	>	Integer[] empty = new Integer[0];
252	>	Integer[] ints = new Integer[SIZE];
253	>	for (int i = 0; i < SIZE; ++i)
254	>	ints[i] = new Integer(i);
255	>	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
256	>	assertFalse(q.addAll(Arrays.asList(empty)));
257	>	assertTrue(q.addAll(Arrays.asList(ints)));
258	>	for (int i = 0; i < SIZE; ++i)
259	>	assertEquals(ints[i], q.poll());
260		}
261
262		/**
263		* put(null) throws NPE
264		*/
265	<	public void testPutNull() {
266	<	try {
265	>	public void testPutNull() throws InterruptedException {
266	>	try {
267		LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
268		q.put(null);
269		shouldThrow();
270	<	}
281	<	catch (NullPointerException success){
282	<	}
283	<	catch (InterruptedException ie) {
284	<	unexpectedException();
285	<	}
270	>	} catch (NullPointerException success) {}
271		}
272
273		/**
274		* all elements successfully put are contained
275		*/
276	<	public void testPut() {
277	<	try {
278	<	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
279	<	for (int i = 0; i < SIZE; ++i) {
280	<	Integer I = new Integer(i);
281	<	q.put(I);
297	<	assertTrue(q.contains(I));
298	<	}
299	<	assertEquals(0, q.remainingCapacity());
300	<	}
301	<	catch (InterruptedException ie) {
302	<	unexpectedException();
276	>	public void testPut() throws InterruptedException {
277	>	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
278	>	for (int i = 0; i < SIZE; ++i) {
279	>	Integer I = new Integer(i);
280	>	q.put(I);
281	>	assertTrue(q.contains(I));
282		}
283	+	assertEquals(0, q.remainingCapacity());
284		}
285
286		/**
287		* put blocks interruptibly if full
288		*/
289	<	public void testBlockingPut() {
290	<	Thread t = new Thread(new Runnable() {
291	<	public void run() {
292	<	int added = 0;
293	<	try {
294	<	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
295	<	for (int i = 0; i < SIZE; ++i) {
296	<	q.put(new Integer(i));
297	<	++added;
298	<	}
299	<	q.put(new Integer(SIZE));
300	<	threadShouldThrow();
301	<	} catch (InterruptedException ie){
302	<	threadAssertEquals(added, SIZE);
323	<	}
324	<	}});
289	>	public void testBlockingPut() throws InterruptedException {
290	>	final LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
291	>	Thread t = new Thread(new CheckedRunnable() {
292	>	public void realRun() throws InterruptedException {
293	>	for (int i = 0; i < SIZE; ++i)
294	>	q.put(i);
295	>	assertEquals(SIZE, q.size());
296	>	assertEquals(0, q.remainingCapacity());
297	>	try {
298	>	q.put(99);
299	>	shouldThrow();
300	>	} catch (InterruptedException success) {}
301	>	}});
302	>
303		t.start();
304	<	try {
305	<	Thread.sleep(SHORT_DELAY_MS);
306	<	t.interrupt();
307	<	t.join();
308	<	}
331	<	catch (InterruptedException ie) {
332	<	unexpectedException();
333	<	}
304	>	Thread.sleep(SHORT_DELAY_MS);
305	>	t.interrupt();
306	>	t.join();
307	>	assertEquals(SIZE, q.size());
308	>	assertEquals(0, q.remainingCapacity());
309		}
310
311		/**
312		* put blocks waiting for take when full
313		*/
314	<	public void testPutWithTake() {
314	>	public void testPutWithTake() throws InterruptedException {
315	>	final int capacity = 2;
316		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
317	<	Thread t = new Thread(new Runnable() {
318	<	public void run() {
319	<	int added = 0;
320	<	try {
321	<	q.put(new Object());
322	<	++added;
323	<	q.put(new Object());
324	<	++added;
325	<	q.put(new Object());
326	<	++added;
327	<	q.put(new Object());
328	<	++added;
329	<	threadShouldThrow();
330	<	} catch (InterruptedException e){
331	<	threadAssertTrue(added >= 2);
332	<	}
333	<	}
334	<	});
359	<	try {
360	<	t.start();
361	<	Thread.sleep(SHORT_DELAY_MS);
362	<	q.take();
363	<	t.interrupt();
364	<	t.join();
365	<	} catch (Exception e){
366	<	unexpectedException();
367	<	}
317	>	Thread t = new Thread(new CheckedRunnable() {
318	>	public void realRun() throws InterruptedException {
319	>	for (int i = 0; i < capacity + 1; i++)
320	>	q.put(i);
321	>	try {
322	>	q.put(99);
323	>	shouldThrow();
324	>	} catch (InterruptedException success) {}
325	>	}});
326	>
327	>	t.start();
328	>	Thread.sleep(SHORT_DELAY_MS);
329	>	assertEquals(q.remainingCapacity(), 0);
330	>	assertEquals(0, q.take());
331	>	Thread.sleep(SHORT_DELAY_MS);
332	>	t.interrupt();
333	>	t.join();
334	>	assertEquals(q.remainingCapacity(), 0);
335		}
336
337		/**
338		* timed offer times out if full and elements not taken
339		*/
340	<	public void testTimedOffer() {
340	>	public void testTimedOffer() throws InterruptedException {
341		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
342	<	Thread t = new Thread(new Runnable() {
343	<	public void run() {
344	<	try {
345	<	q.put(new Object());
346	<	q.put(new Object());
347	<	threadAssertFalse(q.offer(new Object(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
348	<	q.offer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS);
349	<	threadShouldThrow();
350	<	} catch (InterruptedException success){}
351	<	}
352	<	});
353	<
354	<	try {
355	<	t.start();
356	<	Thread.sleep(SMALL_DELAY_MS);
390	<	t.interrupt();
391	<	t.join();
392	<	} catch (Exception e){
393	<	unexpectedException();
394	<	}
342	>	Thread t = new Thread(new CheckedRunnable() {
343	>	public void realRun() throws InterruptedException {
344	>	q.put(new Object());
345	>	q.put(new Object());
346	>	assertFalse(q.offer(new Object(), SHORT_DELAY_MS, MILLISECONDS));
347	>	try {
348	>	q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS);
349	>	shouldThrow();
350	>	} catch (InterruptedException success) {}
351	>	}});
352	>
353	>	t.start();
354	>	Thread.sleep(SMALL_DELAY_MS);
355	>	t.interrupt();
356	>	t.join();
357		}
358
359		/**
360		* take retrieves elements in FIFO order
361		*/
362	<	public void testTake() {
363	<	try {
364	<	LinkedBlockingQueue q = populatedQueue(SIZE);
365	<	for (int i = 0; i < SIZE; ++i) {
366	<	assertEquals(i, ((Integer)q.take()).intValue());
405	<	}
406	<	} catch (InterruptedException e){
407	<	unexpectedException();
408	<	}
362	>	public void testTake() throws InterruptedException {
363	>	LinkedBlockingQueue q = populatedQueue(SIZE);
364	>	for (int i = 0; i < SIZE; ++i) {
365	>	assertEquals(i, q.take());
366	>	}
367		}
368
369		/**
370		* take blocks interruptibly when empty
371		*/
372	<	public void testTakeFromEmpty() {
372	>	public void testTakeFromEmpty() throws InterruptedException {
373		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
374	<	Thread t = new Thread(new Runnable() {
375	<	public void run() {
376	<	try {
377	<	q.take();
378	<	threadShouldThrow();
379	<	} catch (InterruptedException success){ }
380	<	}
381	<	});
382	<	try {
425	<	t.start();
426	<	Thread.sleep(SHORT_DELAY_MS);
427	<	t.interrupt();
428	<	t.join();
429	<	} catch (Exception e){
430	<	unexpectedException();
431	<	}
374	>	Thread t = new ThreadShouldThrow(InterruptedException.class) {
375	>	public void realRun() throws InterruptedException {
376	>	q.take();
377	>	}};
378	>
379	>	t.start();
380	>	Thread.sleep(SHORT_DELAY_MS);
381	>	t.interrupt();
382	>	t.join();
383		}
384
385		/**
386		* Take removes existing elements until empty, then blocks interruptibly
387		*/
388	<	public void testBlockingTake() {
389	<	Thread t = new Thread(new Runnable() {
390	<	public void run() {
391	<	try {
392	<	LinkedBlockingQueue q = populatedQueue(SIZE);
393	<	for (int i = 0; i < SIZE; ++i) {
394	<	assertEquals(i, ((Integer)q.take()).intValue());
395	<	}
396	<	q.take();
397	<	threadShouldThrow();
398	<	} catch (InterruptedException success){
399	<	}
400	<	}});
388	>	public void testBlockingTake() throws InterruptedException {
389	>	final LinkedBlockingQueue q = populatedQueue(SIZE);
390	>	Thread t = new Thread(new CheckedRunnable() {
391	>	public void realRun() throws InterruptedException {
392	>	for (int i = 0; i < SIZE; ++i) {
393	>	assertEquals(i, q.take());
394	>	}
395	>	try {
396	>	q.take();
397	>	shouldThrow();
398	>	} catch (InterruptedException success) {}
399	>	}});
400	>
401		t.start();
402	<	try {
403	<	Thread.sleep(SHORT_DELAY_MS);
404	<	t.interrupt();
454	<	t.join();
455	<	}
456	<	catch (InterruptedException ie) {
457	<	unexpectedException();
458	<	}
402	>	Thread.sleep(SHORT_DELAY_MS);
403	>	t.interrupt();
404	>	t.join();
405		}
406
461	–
407		/**
408		* poll succeeds unless empty
409		*/
410		public void testPoll() {
411		LinkedBlockingQueue q = populatedQueue(SIZE);
412		for (int i = 0; i < SIZE; ++i) {
413	<	assertEquals(i, ((Integer)q.poll()).intValue());
413	>	assertEquals(i, q.poll());
414		}
415	<	assertNull(q.poll());
415	>	assertNull(q.poll());
416		}
417
418		/**
419		* timed pool with zero timeout succeeds when non-empty, else times out
420		*/
421	<	public void testTimedPoll0() {
422	<	try {
423	<	LinkedBlockingQueue q = populatedQueue(SIZE);
424	<	for (int i = 0; i < SIZE; ++i) {
425	<	assertEquals(i, ((Integer)q.poll(0, TimeUnit.MILLISECONDS)).intValue());
426	<	}
482	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
483	<	} catch (InterruptedException e){
484	<	unexpectedException();
485	<	}
421	>	public void testTimedPoll0() throws InterruptedException {
422	>	LinkedBlockingQueue q = populatedQueue(SIZE);
423	>	for (int i = 0; i < SIZE; ++i) {
424	>	assertEquals(i, q.poll(0, MILLISECONDS));
425	>	}
426	>	assertNull(q.poll(0, MILLISECONDS));
427		}
428
429		/**
430		* timed pool with nonzero timeout succeeds when non-empty, else times out
431		*/
432	<	public void testTimedPoll() {
433	<	try {
434	<	LinkedBlockingQueue q = populatedQueue(SIZE);
435	<	for (int i = 0; i < SIZE; ++i) {
436	<	assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
437	<	}
497	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
498	<	} catch (InterruptedException e){
499	<	unexpectedException();
500	<	}
432	>	public void testTimedPoll() throws InterruptedException {
433	>	LinkedBlockingQueue q = populatedQueue(SIZE);
434	>	for (int i = 0; i < SIZE; ++i) {
435	>	assertEquals(i, q.poll(SHORT_DELAY_MS, MILLISECONDS));
436	>	}
437	>	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
438		}
439
440		/**
441		* Interrupted timed poll throws InterruptedException instead of
442		* returning timeout status
443		*/
444	<	public void testInterruptedTimedPoll() {
445	<	Thread t = new Thread(new Runnable() {
446	<	public void run() {
447	<	try {
448	<	LinkedBlockingQueue q = populatedQueue(SIZE);
449	<	for (int i = 0; i < SIZE; ++i) {
450	<	threadAssertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
451	<	}
452	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
453	<	} catch (InterruptedException success){
454	<	}
455	<	}});
444	>	public void testInterruptedTimedPoll() throws InterruptedException {
445	>	Thread t = new Thread(new CheckedRunnable() {
446	>	public void realRun() throws InterruptedException {
447	>	LinkedBlockingQueue q = populatedQueue(SIZE);
448	>	for (int i = 0; i < SIZE; ++i) {
449	>	assertEquals(i, q.poll(SHORT_DELAY_MS, MILLISECONDS));
450	>	}
451	>	try {
452	>	q.poll(SMALL_DELAY_MS, MILLISECONDS);
453	>	shouldThrow();
454	>	} catch (InterruptedException success) {}
455	>	}});
456	>
457		t.start();
458	<	try {
459	<	Thread.sleep(SHORT_DELAY_MS);
460	<	t.interrupt();
523	<	t.join();
524	<	}
525	<	catch (InterruptedException ie) {
526	<	unexpectedException();
527	<	}
458	>	Thread.sleep(SHORT_DELAY_MS);
459	>	t.interrupt();
460	>	t.join();
461		}
462
463		/**
464		*  timed poll before a delayed offer fails; after offer succeeds;
465		*  on interruption throws
466		*/
467	<	public void testTimedPollWithOffer() {
467	>	public void testTimedPollWithOffer() throws InterruptedException {
468		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
469	<	Thread t = new Thread(new Runnable() {
470	<	public void run() {
471	<	try {
472	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
473	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
474	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
475	<	threadShouldThrow();
476	<	} catch (InterruptedException success) { }
477	<	}
478	<	});
479	<	try {
480	<	t.start();
481	<	Thread.sleep(SMALL_DELAY_MS);
482	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
483	<	t.interrupt();
484	<	t.join();
552	<	} catch (Exception e){
553	<	unexpectedException();
554	<	}
555	<	}
469	>	Thread t = new Thread(new CheckedRunnable() {
470	>	public void realRun() throws InterruptedException {
471	>	try {
472	>	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
473	>	assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS));
474	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
475	>	shouldThrow();
476	>	} catch (InterruptedException success) {}
477	>	}});
478	>
479	>	t.start();
480	>	Thread.sleep(SMALL_DELAY_MS);
481	>	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
482	>	t.interrupt();
483	>	t.join();
484	>	}
485
486		/**
487		* peek returns next element, or null if empty
#	Line 560 | Line 489 | public class LinkedBlockingQueueTest ext
489		public void testPeek() {
490		LinkedBlockingQueue q = populatedQueue(SIZE);
491		for (int i = 0; i < SIZE; ++i) {
492	<	assertEquals(i, ((Integer)q.peek()).intValue());
493	<	q.poll();
492	>	assertEquals(i, q.peek());
493	>	assertEquals(i, q.poll());
494		assertTrue(q.peek() == null ||
495	<	i != ((Integer)q.peek()).intValue());
495	>	!q.peek().equals(i));
496		}
497	<	assertNull(q.peek());
497	>	assertNull(q.peek());
498		}
499
500		/**
#	Line 574 | Line 503 | public class LinkedBlockingQueueTest ext
503		public void testElement() {
504		LinkedBlockingQueue q = populatedQueue(SIZE);
505		for (int i = 0; i < SIZE; ++i) {
506	<	assertEquals(i, ((Integer)q.element()).intValue());
507	<	q.poll();
506	>	assertEquals(i, q.element());
507	>	assertEquals(i, q.poll());
508		}
509		try {
510		q.element();
511		shouldThrow();
512	<	}
584	<	catch (NoSuchElementException success) {}
512	>	} catch (NoSuchElementException success) {}
513		}
514
515		/**
#	Line 590 | Line 518 | public class LinkedBlockingQueueTest ext
518		public void testRemove() {
519		LinkedBlockingQueue q = populatedQueue(SIZE);
520		for (int i = 0; i < SIZE; ++i) {
521	<	assertEquals(i, ((Integer)q.remove()).intValue());
521	>	assertEquals(i, q.remove());
522		}
523		try {
524		q.remove();
525		shouldThrow();
526	<	} catch (NoSuchElementException success){
599	<	}
526	>	} catch (NoSuchElementException success) {}
527		}
528
529		/**
#	Line 613 | Line 540 | public class LinkedBlockingQueueTest ext
540		}
541		assertTrue(q.isEmpty());
542		}
543	<
543	>
544	>	/**
545	>	* An add following remove(x) succeeds
546	>	*/
547	>	public void testRemoveElementAndAdd() throws InterruptedException {
548	>	LinkedBlockingQueue q = new LinkedBlockingQueue();
549	>	assertTrue(q.add(new Integer(1)));
550	>	assertTrue(q.add(new Integer(2)));
551	>	assertTrue(q.remove(new Integer(1)));
552	>	assertTrue(q.remove(new Integer(2)));
553	>	assertTrue(q.add(new Integer(3)));
554	>	assertTrue(q.take() != null);
555	>	}
556	>
557		/**
558		* contains(x) reports true when elements added but not yet removed
559		*/
#	Line 637 | Line 577 | public class LinkedBlockingQueueTest ext
577		assertEquals(SIZE, q.remainingCapacity());
578		q.add(one);
579		assertFalse(q.isEmpty());
580	+	assertTrue(q.contains(one));
581		q.clear();
582		assertTrue(q.isEmpty());
583		}
#	Line 693 | Line 634 | public class LinkedBlockingQueueTest ext
634		/**
635		* toArray contains all elements
636		*/
637	<	public void testToArray() {
637	>	public void testToArray() throws InterruptedException {
638		LinkedBlockingQueue q = populatedQueue(SIZE);
639	<	Object[] o = q.toArray();
640	<	try {
641	<	for(int i = 0; i < o.length; i++)
701	<	assertEquals(o[i], q.take());
702	<	} catch (InterruptedException e){
703	<	unexpectedException();
704	<	}
639	>	Object[] o = q.toArray();
640	>	for (int i = 0; i < o.length; i++)
641	>	assertEquals(o[i], q.take());
642		}
643
644		/**
645		* toArray(a) contains all elements
646		*/
647	<	public void testToArray2() {
647	>	public void testToArray2() throws InterruptedException {
648		LinkedBlockingQueue q = populatedQueue(SIZE);
649	<	Integer[] ints = new Integer[SIZE];
650	<	ints = (Integer[])q.toArray(ints);
651	<	try {
652	<	for(int i = 0; i < ints.length; i++)
716	<	assertEquals(ints[i], q.take());
717	<	} catch (InterruptedException e){
718	<	unexpectedException();
719	<	}
649	>	Integer[] ints = new Integer[SIZE];
650	>	ints = (Integer[])q.toArray(ints);
651	>	for (int i = 0; i < ints.length; i++)
652	>	assertEquals(ints[i], q.take());
653		}
654
655		/**
656		* toArray(null) throws NPE
657		*/
658		public void testToArray_BadArg() {
659	<	try {
660	<	LinkedBlockingQueue q = populatedQueue(SIZE);
661	<	Object o[] = q.toArray(null);
662	<	shouldThrow();
663	<	} catch(NullPointerException success){}
659	>	LinkedBlockingQueue q = populatedQueue(SIZE);
660	>	try {
661	>	Object o[] = q.toArray(null);
662	>	shouldThrow();
663	>	} catch (NullPointerException success) {}
664		}
665
666		/**
667	<	* toArray with incompatable array type throws CCE
667	>	* toArray with incompatible array type throws CCE
668		*/
669		public void testToArray1_BadArg() {
670	<	try {
671	<	LinkedBlockingQueue q = populatedQueue(SIZE);
672	<	Object o[] = q.toArray(new String[10] );
673	<	shouldThrow();
674	<	} catch(ArrayStoreException  success){}
670	>	LinkedBlockingQueue q = populatedQueue(SIZE);
671	>	try {
672	>	Object o[] = q.toArray(new String[10]);
673	>	shouldThrow();
674	>	} catch (ArrayStoreException success) {}
675		}
676
677	<
677	>
678		/**
679		* iterator iterates through all elements
680		*/
681	<	public void testIterator() {
681	>	public void testIterator() throws InterruptedException {
682		LinkedBlockingQueue q = populatedQueue(SIZE);
683	<	Iterator it = q.iterator();
684	<	try {
685	<	while(it.hasNext()){
686	<	assertEquals(it.next(), q.take());
754	<	}
755	<	} catch (InterruptedException e){
756	<	unexpectedException();
757	<	}
683	>	Iterator it = q.iterator();
684	>	while (it.hasNext()) {
685	>	assertEquals(it.next(), q.take());
686	>	}
687		}
688
689		/**
690		* iterator.remove removes current element
691		*/
692	<	public void testIteratorRemove () {
692	>	public void testIteratorRemove() {
693		final LinkedBlockingQueue q = new LinkedBlockingQueue(3);
694		q.add(two);
695		q.add(one);
#	Line 769 | Line 698 | public class LinkedBlockingQueueTest ext
698		Iterator it = q.iterator();
699		it.next();
700		it.remove();
701	<
701	>
702		it = q.iterator();
703	<	assertEquals(it.next(), one);
704	<	assertEquals(it.next(), three);
703	>	assertSame(it.next(), one);
704	>	assertSame(it.next(), three);
705		assertFalse(it.hasNext());
706		}
707
#	Line 788 | Line 717 | public class LinkedBlockingQueueTest ext
717		assertEquals(0, q.remainingCapacity());
718		int k = 0;
719		for (Iterator it = q.iterator(); it.hasNext();) {
720	<	int i = ((Integer)(it.next())).intValue();
792	<	assertEquals(++k, i);
720	>	assertEquals(++k, it.next());
721		}
722		assertEquals(3, k);
723		}
#	Line 797 | Line 725 | public class LinkedBlockingQueueTest ext
725		/**
726		* Modifications do not cause iterators to fail
727		*/
728	<	public void testWeaklyConsistentIteration () {
728	>	public void testWeaklyConsistentIteration() {
729		final LinkedBlockingQueue q = new LinkedBlockingQueue(3);
730		q.add(one);
731		q.add(two);
732		q.add(three);
733	<	try {
734	<	for (Iterator it = q.iterator(); it.hasNext();) {
735	<	q.remove();
808	<	it.next();
809	<	}
810	<	}
811	<	catch (ConcurrentModificationException e) {
812	<	unexpectedException();
733	>	for (Iterator it = q.iterator(); it.hasNext();) {
734	>	q.remove();
735	>	it.next();
736		}
737		assertEquals(0, q.size());
738		}
#	Line 824 | Line 747 | public class LinkedBlockingQueueTest ext
747		for (int i = 0; i < SIZE; ++i) {
748		assertTrue(s.indexOf(String.valueOf(i)) >= 0);
749		}
750	<	}
750	>	}
751
752
753		/**
#	Line 835 | Line 758 | public class LinkedBlockingQueueTest ext
758		q.add(one);
759		q.add(two);
760		ExecutorService executor = Executors.newFixedThreadPool(2);
761	<	executor.execute(new Runnable() {
762	<	public void run() {
763	<	threadAssertFalse(q.offer(three));
764	<	try {
765	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
766	<	threadAssertEquals(0, q.remainingCapacity());
767	<	}
768	<	catch (InterruptedException e) {
769	<	threadUnexpectedException();
770	<	}
771	<	}
772	<	});
761	>	executor.execute(new CheckedRunnable() {
762	>	public void realRun() throws InterruptedException {
763	>	assertFalse(q.offer(three));
764	>	assertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS));
765	>	assertEquals(0, q.remainingCapacity());
766	>	}});
767	>
768	>	executor.execute(new CheckedRunnable() {
769	>	public void realRun() throws InterruptedException {
770	>	Thread.sleep(SMALL_DELAY_MS);
771	>	assertSame(one, q.take());
772	>	}});
773
851	–	executor.execute(new Runnable() {
852	–	public void run() {
853	–	try {
854	–	Thread.sleep(SMALL_DELAY_MS);
855	–	threadAssertEquals(one, q.take());
856	–	}
857	–	catch (InterruptedException e) {
858	–	threadUnexpectedException();
859	–	}
860	–	}
861	–	});
862	–
774		joinPool(executor);
775		}
776
#	Line 869 | Line 780 | public class LinkedBlockingQueueTest ext
780		public void testPollInExecutor() {
781		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
782		ExecutorService executor = Executors.newFixedThreadPool(2);
783	<	executor.execute(new Runnable() {
784	<	public void run() {
785	<	threadAssertNull(q.poll());
786	<	try {
787	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
788	<	threadAssertTrue(q.isEmpty());
789	<	}
790	<	catch (InterruptedException e) {
791	<	threadUnexpectedException();
792	<	}
793	<	}
794	<	});
783	>	executor.execute(new CheckedRunnable() {
784	>	public void realRun() throws InterruptedException {
785	>	assertNull(q.poll());
786	>	assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
787	>	assertTrue(q.isEmpty());
788	>	}});
789	>
790	>	executor.execute(new CheckedRunnable() {
791	>	public void realRun() throws InterruptedException {
792	>	Thread.sleep(SMALL_DELAY_MS);
793	>	q.put(one);
794	>	}});
795
885	–	executor.execute(new Runnable() {
886	–	public void run() {
887	–	try {
888	–	Thread.sleep(SMALL_DELAY_MS);
889	–	q.put(one);
890	–	}
891	–	catch (InterruptedException e) {
892	–	threadUnexpectedException();
893	–	}
894	–	}
895	–	});
896	–
796		joinPool(executor);
797		}
798
799		/**
800		* A deserialized serialized queue has same elements in same order
801		*/
802	<	public void testSerialization() {
802	>	public void testSerialization() throws Exception {
803		LinkedBlockingQueue q = populatedQueue(SIZE);
804
805	<	try {
806	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
807	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
808	<	out.writeObject(q);
809	<	out.close();
810	<
811	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
812	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
813	<	LinkedBlockingQueue r = (LinkedBlockingQueue)in.readObject();
814	<	assertEquals(q.size(), r.size());
815	<	while (!q.isEmpty())
917	<	assertEquals(q.remove(), r.remove());
918	<	} catch(Exception e){
919	<	unexpectedException();
920	<	}
805	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
806	>	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
807	>	out.writeObject(q);
808	>	out.close();
809	>
810	>	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
811	>	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
812	>	LinkedBlockingQueue r = (LinkedBlockingQueue)in.readObject();
813	>	assertEquals(q.size(), r.size());
814	>	while (!q.isEmpty())
815	>	assertEquals(q.remove(), r.remove());
816		}
817
818		/**
819		* drainTo(null) throws NPE
820	<	*/
820	>	*/
821		public void testDrainToNull() {
822		LinkedBlockingQueue q = populatedQueue(SIZE);
823		try {
824		q.drainTo(null);
825		shouldThrow();
826	<	} catch(NullPointerException success) {
932	<	}
826	>	} catch (NullPointerException success) {}
827		}
828
829		/**
830		* drainTo(this) throws IAE
831	<	*/
831	>	*/
832		public void testDrainToSelf() {
833		LinkedBlockingQueue q = populatedQueue(SIZE);
834		try {
835		q.drainTo(q);
836		shouldThrow();
837	<	} catch(IllegalArgumentException success) {
944	<	}
837	>	} catch (IllegalArgumentException success) {}
838		}
839
840		/**
841		* drainTo(c) empties queue into another collection c
842	<	*/
842	>	*/
843		public void testDrainTo() {
844		LinkedBlockingQueue q = populatedQueue(SIZE);
845		ArrayList l = new ArrayList();
846		q.drainTo(l);
847		assertEquals(q.size(), 0);
848		assertEquals(l.size(), SIZE);
849	<	for (int i = 0; i < SIZE; ++i)
849	>	for (int i = 0; i < SIZE; ++i)
850	>	assertEquals(l.get(i), new Integer(i));
851	>	q.add(zero);
852	>	q.add(one);
853	>	assertFalse(q.isEmpty());
854	>	assertTrue(q.contains(zero));
855	>	assertTrue(q.contains(one));
856	>	l.clear();
857	>	q.drainTo(l);
858	>	assertEquals(q.size(), 0);
859	>	assertEquals(l.size(), 2);
860	>	for (int i = 0; i < 2; ++i)
861		assertEquals(l.get(i), new Integer(i));
862		}
863
864		/**
865		* drainTo empties full queue, unblocking a waiting put.
866	<	*/
867	<	public void testDrainToWithActivePut() {
866	>	*/
867	>	public void testDrainToWithActivePut() throws InterruptedException {
868		final LinkedBlockingQueue q = populatedQueue(SIZE);
869	<	Thread t = new Thread(new Runnable() {
870	<	public void run() {
871	<	try {
872	<	q.put(new Integer(SIZE+1));
873	<	} catch (InterruptedException ie){
874	<	threadUnexpectedException();
875	<	}
876	<	}
877	<	});
878	<	try {
879	<	t.start();
880	<	ArrayList l = new ArrayList();
881	<	q.drainTo(l);
978	<	assertTrue(l.size() >= SIZE);
979	<	for (int i = 0; i < SIZE; ++i)
980	<	assertEquals(l.get(i), new Integer(i));
981	<	t.join();
982	<	assertTrue(q.size() + l.size() == SIZE+1);
983	<	} catch(Exception e){
984	<	unexpectedException();
985	<	}
869	>	Thread t = new Thread(new CheckedRunnable() {
870	>	public void realRun() throws InterruptedException {
871	>	q.put(new Integer(SIZE+1));
872	>	}});
873	>
874	>	t.start();
875	>	ArrayList l = new ArrayList();
876	>	q.drainTo(l);
877	>	assertTrue(l.size() >= SIZE);
878	>	for (int i = 0; i < SIZE; ++i)
879	>	assertEquals(l.get(i), new Integer(i));
880	>	t.join();
881	>	assertTrue(q.size() + l.size() >= SIZE);
882		}
883
884		/**
885		* drainTo(null, n) throws NPE
886	<	*/
886	>	*/
887		public void testDrainToNullN() {
888		LinkedBlockingQueue q = populatedQueue(SIZE);
889		try {
890		q.drainTo(null, 0);
891		shouldThrow();
892	<	} catch(NullPointerException success) {
997	<	}
892	>	} catch (NullPointerException success) {}
893		}
894
895		/**
896		* drainTo(this, n) throws IAE
897	<	*/
897	>	*/
898		public void testDrainToSelfN() {
899		LinkedBlockingQueue q = populatedQueue(SIZE);
900		try {
901		q.drainTo(q, 0);
902		shouldThrow();
903	<	} catch(IllegalArgumentException success) {
1009	<	}
903	>	} catch (IllegalArgumentException success) {}
904		}
905
906		/**
907		* drainTo(c, n) empties first max {n, size} elements of queue into c
908	<	*/
908	>	*/
909		public void testDrainToN() {
910	+	LinkedBlockingQueue q = new LinkedBlockingQueue();
911		for (int i = 0; i < SIZE + 2; ++i) {
912	<	LinkedBlockingQueue q = populatedQueue(SIZE);
912	>	for (int j = 0; j < SIZE; j++)
913	>	assertTrue(q.offer(new Integer(j)));
914		ArrayList l = new ArrayList();
915		q.drainTo(l, i);
916		int k = (i < SIZE)? i : SIZE;
1021	–	assertEquals(q.size(), SIZE-k);
917		assertEquals(l.size(), k);
918	<	for (int j = 0; j < k; ++j)
918	>	assertEquals(q.size(), SIZE-k);
919	>	for (int j = 0; j < k; ++j)
920		assertEquals(l.get(j), new Integer(j));
921	+	while (q.poll() != null) ;
922		}
923		}
924

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