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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 1.19 by jsr166, Sat Nov 21 19:11:53 2009 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		* addAll of a collection with any null elements throws NPE after
#	Line 234 | Line 226 | public class LinkedBlockingQueueTest ext
226		ints[i] = new Integer(i);
227		q.addAll(Arrays.asList(ints));
228		shouldThrow();
229	<	}
238	<	catch (NullPointerException success) {}
229	>	} catch (NullPointerException success) {}
230		}
231		/**
232		* addAll throws ISE if not enough room
#	Line 248 | Line 239 | public class LinkedBlockingQueueTest ext
239		ints[i] = new Integer(i);
240		q.addAll(Arrays.asList(ints));
241		shouldThrow();
242	<	}
252	<	catch (IllegalStateException success) {}
242	>	} catch (IllegalStateException success) {}
243		}
244		/**
245		* Queue contains all elements, in traversal order, of successful addAll
246		*/
247		public void testAddAll5() {
248	<	try {
249	<	Integer[] empty = new Integer[0];
250	<	Integer[] ints = new Integer[SIZE];
251	<	for (int i = 0; i < SIZE; ++i)
252	<	ints[i] = new Integer(i);
253	<	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
254	<	assertFalse(q.addAll(Arrays.asList(empty)));
255	<	assertTrue(q.addAll(Arrays.asList(ints)));
256	<	for (int i = 0; i < SIZE; ++i)
267	<	assertEquals(ints[i], q.poll());
268	<	}
269	<	finally {}
248	>	Integer[] empty = new Integer[0];
249	>	Integer[] ints = new Integer[SIZE];
250	>	for (int i = 0; i < SIZE; ++i)
251	>	ints[i] = new Integer(i);
252	>	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
253	>	assertFalse(q.addAll(Arrays.asList(empty)));
254	>	assertTrue(q.addAll(Arrays.asList(ints)));
255	>	for (int i = 0; i < SIZE; ++i)
256	>	assertEquals(ints[i], q.poll());
257		}
258
259		/**
260		* put(null) throws NPE
261		*/
262	<	public void testPutNull() {
263	<	try {
262	>	public void testPutNull() throws InterruptedException {
263	>	try {
264		LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
265		q.put(null);
266		shouldThrow();
267	<	}
281	<	catch (NullPointerException success){
282	<	}
283	<	catch (InterruptedException ie) {
284	<	unexpectedException();
285	<	}
267	>	} catch (NullPointerException success) {}
268		}
269
270		/**
271		* all elements successfully put are contained
272		*/
273	<	public void testPut() {
274	<	try {
275	<	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
276	<	for (int i = 0; i < SIZE; ++i) {
277	<	Integer I = new Integer(i);
278	<	q.put(I);
297	<	assertTrue(q.contains(I));
298	<	}
299	<	assertEquals(0, q.remainingCapacity());
300	<	}
301	<	catch (InterruptedException ie) {
302	<	unexpectedException();
273	>	public void testPut() throws InterruptedException {
274	>	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
275	>	for (int i = 0; i < SIZE; ++i) {
276	>	Integer I = new Integer(i);
277	>	q.put(I);
278	>	assertTrue(q.contains(I));
279		}
280	+	assertEquals(0, q.remainingCapacity());
281		}
282
283		/**
284		* put blocks interruptibly if full
285		*/
286	<	public void testBlockingPut() {
287	<	Thread t = new Thread(new Runnable() {
288	<	public void run() {
289	<	int added = 0;
290	<	try {
291	<	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
292	<	for (int i = 0; i < SIZE; ++i) {
293	<	q.put(new Integer(i));
294	<	++added;
295	<	}
296	<	q.put(new Integer(SIZE));
297	<	threadShouldThrow();
298	<	} catch (InterruptedException ie){
299	<	threadAssertEquals(added, SIZE);
300	<	}
301	<	}});
286	>	public void testBlockingPut() throws InterruptedException {
287	>	Thread t = new Thread(new CheckedRunnable() {
288	>	public void realRun() {
289	>	int added = 0;
290	>	try {
291	>	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
292	>	for (int i = 0; i < SIZE; ++i) {
293	>	q.put(new Integer(i));
294	>	++added;
295	>	}
296	>	q.put(new Integer(SIZE));
297	>	threadShouldThrow();
298	>	} catch (InterruptedException success) {
299	>	threadAssertEquals(added, SIZE);
300	>	}
301	>	}});
302	>
303		t.start();
304	<	try {
305	<	Thread.sleep(SHORT_DELAY_MS);
306	<	t.interrupt();
329	<	t.join();
330	<	}
331	<	catch (InterruptedException ie) {
332	<	unexpectedException();
333	<	}
304	>	Thread.sleep(SHORT_DELAY_MS);
305	>	t.interrupt();
306	>	t.join();
307		}
308
309		/**
310		* put blocks waiting for take when full
311		*/
312	<	public void testPutWithTake() {
312	>	public void testPutWithTake() throws InterruptedException {
313		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
314	<	Thread t = new Thread(new Runnable() {
315	<	public void run() {
316	<	int added = 0;
317	<	try {
318	<	q.put(new Object());
319	<	++added;
320	<	q.put(new Object());
321	<	++added;
322	<	q.put(new Object());
323	<	++added;
324	<	q.put(new Object());
325	<	++added;
326	<	threadShouldThrow();
327	<	} catch (InterruptedException e){
328	<	threadAssertTrue(added >= 2);
356	<	}
314	>	Thread t = new Thread(new CheckedRunnable() {
315	>	public void realRun() {
316	>	int added = 0;
317	>	try {
318	>	q.put(new Object());
319	>	++added;
320	>	q.put(new Object());
321	>	++added;
322	>	q.put(new Object());
323	>	++added;
324	>	q.put(new Object());
325	>	++added;
326	>	threadShouldThrow();
327	>	} catch (InterruptedException success) {
328	>	threadAssertTrue(added >= 2);
329		}
330	<	});
331	<	try {
332	<	t.start();
333	<	Thread.sleep(SHORT_DELAY_MS);
334	<	q.take();
335	<	t.interrupt();
336	<	t.join();
365	<	} catch (Exception e){
366	<	unexpectedException();
367	<	}
330	>	}});
331	>
332	>	t.start();
333	>	Thread.sleep(SHORT_DELAY_MS);
334	>	q.take();
335	>	t.interrupt();
336	>	t.join();
337		}
338
339		/**
340		* timed offer times out if full and elements not taken
341		*/
342	<	public void testTimedOffer() {
342	>	public void testTimedOffer() throws InterruptedException {
343		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
344	<	Thread t = new Thread(new Runnable() {
345	<	public void run() {
346	<	try {
347	<	q.put(new Object());
348	<	q.put(new Object());
349	<	threadAssertFalse(q.offer(new Object(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
350	<	q.offer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS);
351	<	threadShouldThrow();
352	<	} catch (InterruptedException success){}
353	<	}
354	<	});
355	<
387	<	try {
388	<	t.start();
389	<	Thread.sleep(SMALL_DELAY_MS);
390	<	t.interrupt();
391	<	t.join();
392	<	} catch (Exception e){
393	<	unexpectedException();
394	<	}
344	>	Thread t = new ThreadShouldThrow(InterruptedException.class) {
345	>	public void realRun() throws InterruptedException {
346	>	q.put(new Object());
347	>	q.put(new Object());
348	>	threadAssertFalse(q.offer(new Object(), SHORT_DELAY_MS, MILLISECONDS));
349	>	q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS);
350	>	}};
351	>
352	>	t.start();
353	>	Thread.sleep(SMALL_DELAY_MS);
354	>	t.interrupt();
355	>	t.join();
356		}
357
358		/**
359		* take retrieves elements in FIFO order
360		*/
361	<	public void testTake() {
362	<	try {
363	<	LinkedBlockingQueue q = populatedQueue(SIZE);
364	<	for (int i = 0; i < SIZE; ++i) {
365	<	assertEquals(i, ((Integer)q.take()).intValue());
405	<	}
406	<	} catch (InterruptedException e){
407	<	unexpectedException();
408	<	}
361	>	public void testTake() throws InterruptedException {
362	>	LinkedBlockingQueue q = populatedQueue(SIZE);
363	>	for (int i = 0; i < SIZE; ++i) {
364	>	assertEquals(i, ((Integer)q.take()).intValue());
365	>	}
366		}
367
368		/**
369		* take blocks interruptibly when empty
370		*/
371	<	public void testTakeFromEmpty() {
371	>	public void testTakeFromEmpty() throws InterruptedException {
372		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
373	<	Thread t = new Thread(new Runnable() {
374	<	public void run() {
375	<	try {
376	<	q.take();
377	<	threadShouldThrow();
378	<	} catch (InterruptedException success){ }
379	<	}
380	<	});
381	<	try {
425	<	t.start();
426	<	Thread.sleep(SHORT_DELAY_MS);
427	<	t.interrupt();
428	<	t.join();
429	<	} catch (Exception e){
430	<	unexpectedException();
431	<	}
373	>	Thread t = new ThreadShouldThrow(InterruptedException.class) {
374	>	public void realRun() throws InterruptedException {
375	>	q.take();
376	>	}};
377	>
378	>	t.start();
379	>	Thread.sleep(SHORT_DELAY_MS);
380	>	t.interrupt();
381	>	t.join();
382		}
383
384		/**
385		* Take removes existing elements until empty, then blocks interruptibly
386		*/
387	<	public void testBlockingTake() {
388	<	Thread t = new Thread(new Runnable() {
389	<	public void run() {
390	<	try {
391	<	LinkedBlockingQueue q = populatedQueue(SIZE);
392	<	for (int i = 0; i < SIZE; ++i) {
393	<	assertEquals(i, ((Integer)q.take()).intValue());
394	<	}
395	<	q.take();
396	<	threadShouldThrow();
447	<	} catch (InterruptedException success){
448	<	}
449	<	}});
387	>	public void testBlockingTake() throws InterruptedException {
388	>	Thread t = new ThreadShouldThrow(InterruptedException.class) {
389	>	public void realRun() throws InterruptedException {
390	>	LinkedBlockingQueue q = populatedQueue(SIZE);
391	>	for (int i = 0; i < SIZE; ++i) {
392	>	assertEquals(i, ((Integer)q.take()).intValue());
393	>	}
394	>	q.take();
395	>	}};
396	>
397		t.start();
398	<	try {
399	<	Thread.sleep(SHORT_DELAY_MS);
400	<	t.interrupt();
454	<	t.join();
455	<	}
456	<	catch (InterruptedException ie) {
457	<	unexpectedException();
458	<	}
398	>	Thread.sleep(SHORT_DELAY_MS);
399	>	t.interrupt();
400	>	t.join();
401		}
402
403
#	Line 467 | Line 409 | public class LinkedBlockingQueueTest ext
409		for (int i = 0; i < SIZE; ++i) {
410		assertEquals(i, ((Integer)q.poll()).intValue());
411		}
412	<	assertNull(q.poll());
412	>	assertNull(q.poll());
413		}
414
415		/**
416		* timed pool with zero timeout succeeds when non-empty, else times out
417		*/
418	<	public void testTimedPoll0() {
419	<	try {
420	<	LinkedBlockingQueue q = populatedQueue(SIZE);
421	<	for (int i = 0; i < SIZE; ++i) {
422	<	assertEquals(i, ((Integer)q.poll(0, TimeUnit.MILLISECONDS)).intValue());
423	<	}
482	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
483	<	} catch (InterruptedException e){
484	<	unexpectedException();
485	<	}
418	>	public void testTimedPoll0() throws InterruptedException {
419	>	LinkedBlockingQueue q = populatedQueue(SIZE);
420	>	for (int i = 0; i < SIZE; ++i) {
421	>	assertEquals(i, ((Integer)q.poll(0, MILLISECONDS)).intValue());
422	>	}
423	>	assertNull(q.poll(0, MILLISECONDS));
424		}
425
426		/**
427		* timed pool with nonzero timeout succeeds when non-empty, else times out
428		*/
429	<	public void testTimedPoll() {
430	<	try {
431	<	LinkedBlockingQueue q = populatedQueue(SIZE);
432	<	for (int i = 0; i < SIZE; ++i) {
433	<	assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
434	<	}
497	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
498	<	} catch (InterruptedException e){
499	<	unexpectedException();
500	<	}
429	>	public void testTimedPoll() throws InterruptedException {
430	>	LinkedBlockingQueue q = populatedQueue(SIZE);
431	>	for (int i = 0; i < SIZE; ++i) {
432	>	assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, MILLISECONDS)).intValue());
433	>	}
434	>	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
435		}
436
437		/**
438		* Interrupted timed poll throws InterruptedException instead of
439		* returning timeout status
440		*/
441	<	public void testInterruptedTimedPoll() {
442	<	Thread t = new Thread(new Runnable() {
443	<	public void run() {
444	<	try {
445	<	LinkedBlockingQueue q = populatedQueue(SIZE);
446	<	for (int i = 0; i < SIZE; ++i) {
447	<	threadAssertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
448	<	}
449	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
450	<	} catch (InterruptedException success){
451	<	}
452	<	}});
441	>	public void testInterruptedTimedPoll() throws InterruptedException {
442	>	Thread t = new Thread(new CheckedRunnable() {
443	>	public void realRun() throws InterruptedException {
444	>	LinkedBlockingQueue q = populatedQueue(SIZE);
445	>	for (int i = 0; i < SIZE; ++i) {
446	>	assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, MILLISECONDS)).intValue());
447	>	}
448	>	try {
449	>	q.poll(SMALL_DELAY_MS, MILLISECONDS);
450	>	shouldThrow();
451	>	} catch (InterruptedException success) {}
452	>	}});
453	>
454		t.start();
455	<	try {
456	<	Thread.sleep(SHORT_DELAY_MS);
457	<	t.interrupt();
523	<	t.join();
524	<	}
525	<	catch (InterruptedException ie) {
526	<	unexpectedException();
527	<	}
455	>	Thread.sleep(SHORT_DELAY_MS);
456	>	t.interrupt();
457	>	t.join();
458		}
459
460		/**
461		*  timed poll before a delayed offer fails; after offer succeeds;
462		*  on interruption throws
463		*/
464	<	public void testTimedPollWithOffer() {
464	>	public void testTimedPollWithOffer() throws InterruptedException {
465		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
466	<	Thread t = new Thread(new Runnable() {
467	<	public void run() {
468	<	try {
469	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
470	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
471	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
472	<	threadShouldThrow();
473	<	} catch (InterruptedException success) { }
474	<	}
475	<	});
476	<	try {
477	<	t.start();
478	<	Thread.sleep(SMALL_DELAY_MS);
549	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
550	<	t.interrupt();
551	<	t.join();
552	<	} catch (Exception e){
553	<	unexpectedException();
554	<	}
555	<	}
466	>	Thread t = new ThreadShouldThrow(InterruptedException.class) {
467	>	public void realRun() throws InterruptedException {
468	>	threadAssertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
469	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
470	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
471	>	}};
472	>
473	>	t.start();
474	>	Thread.sleep(SMALL_DELAY_MS);
475	>	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
476	>	t.interrupt();
477	>	t.join();
478	>	}
479
480		/**
481		* peek returns next element, or null if empty
#	Line 565 | Line 488 | public class LinkedBlockingQueueTest ext
488		assertTrue(q.peek() == null ||
489		i != ((Integer)q.peek()).intValue());
490		}
491	<	assertNull(q.peek());
491	>	assertNull(q.peek());
492		}
493
494		/**
#	Line 580 | Line 503 | public class LinkedBlockingQueueTest ext
503		try {
504		q.element();
505		shouldThrow();
506	<	}
584	<	catch (NoSuchElementException success) {}
506	>	} catch (NoSuchElementException success) {}
507		}
508
509		/**
#	Line 595 | Line 517 | public class LinkedBlockingQueueTest ext
517		try {
518		q.remove();
519		shouldThrow();
520	<	} catch (NoSuchElementException success){
599	<	}
520	>	} catch (NoSuchElementException success) {}
521		}
522
523		/**
#	Line 613 | Line 534 | public class LinkedBlockingQueueTest ext
534		}
535		assertTrue(q.isEmpty());
536		}
537	<
537	>
538	>	/**
539	>	* An add following remove(x) succeeds
540	>	*/
541	>	public void testRemoveElementAndAdd() throws InterruptedException {
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)));
548	>	assertTrue(q.take() != null);
549	>	}
550	>
551		/**
552		* contains(x) reports true when elements added but not yet removed
553		*/
#	Line 637 | Line 571 | public class LinkedBlockingQueueTest ext
571		assertEquals(SIZE, q.remainingCapacity());
572		q.add(one);
573		assertFalse(q.isEmpty());
574	+	assertTrue(q.contains(one));
575		q.clear();
576		assertTrue(q.isEmpty());
577		}
#	Line 693 | Line 628 | public class LinkedBlockingQueueTest ext
628		/**
629		* toArray contains all elements
630		*/
631	<	public void testToArray() {
631	>	public void testToArray() throws InterruptedException {
632		LinkedBlockingQueue q = populatedQueue(SIZE);
633	<	Object[] o = q.toArray();
634	<	try {
635	<	for(int i = 0; i < o.length; i++)
701	<	assertEquals(o[i], q.take());
702	<	} catch (InterruptedException e){
703	<	unexpectedException();
704	<	}
633	>	Object[] o = q.toArray();
634	>	for (int i = 0; i < o.length; i++)
635	>	assertEquals(o[i], q.take());
636		}
637
638		/**
639		* toArray(a) contains all elements
640		*/
641	<	public void testToArray2() {
641	>	public void testToArray2() throws InterruptedException {
642		LinkedBlockingQueue q = populatedQueue(SIZE);
643	<	Integer[] ints = new Integer[SIZE];
644	<	ints = (Integer[])q.toArray(ints);
645	<	try {
646	<	for(int i = 0; i < ints.length; i++)
716	<	assertEquals(ints[i], q.take());
717	<	} catch (InterruptedException e){
718	<	unexpectedException();
719	<	}
643	>	Integer[] ints = new Integer[SIZE];
644	>	ints = (Integer[])q.toArray(ints);
645	>	for (int i = 0; i < ints.length; i++)
646	>	assertEquals(ints[i], q.take());
647		}
648
649		/**
650		* toArray(null) throws NPE
651		*/
652		public void testToArray_BadArg() {
653	<	try {
653	>	try {
654		LinkedBlockingQueue q = populatedQueue(SIZE);
655	<	Object o[] = q.toArray(null);
656	<	shouldThrow();
657	<	} catch(NullPointerException success){}
655	>	Object o[] = q.toArray(null);
656	>	shouldThrow();
657	>	} catch (NullPointerException success) {}
658		}
659
660		/**
661	<	* toArray with incompatable array type throws CCE
661	>	* toArray with incompatible array type throws CCE
662		*/
663		public void testToArray1_BadArg() {
664	<	try {
664	>	try {
665		LinkedBlockingQueue q = populatedQueue(SIZE);
666	<	Object o[] = q.toArray(new String[10] );
667	<	shouldThrow();
668	<	} catch(ArrayStoreException  success){}
666	>	Object o[] = q.toArray(new String[10] );
667	>	shouldThrow();
668	>	} catch (ArrayStoreException success) {}
669		}
670
671	<
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());
754	<	}
755	<	} catch (InterruptedException e){
756	<	unexpectedException();
757	<	}
677	>	Iterator it = q.iterator();
678	>	while (it.hasNext()) {
679	>	assertEquals(it.next(), q.take());
680	>	}
681		}
682
683		/**
#	Line 769 | Line 692 | public class LinkedBlockingQueueTest ext
692		Iterator it = q.iterator();
693		it.next();
694		it.remove();
695	<
695	>
696		it = q.iterator();
697		assertEquals(it.next(), one);
698		assertEquals(it.next(), three);
#	Line 802 | Line 725 | public class LinkedBlockingQueueTest ext
725		q.add(one);
726		q.add(two);
727		q.add(three);
728	<	try {
729	<	for (Iterator it = q.iterator(); it.hasNext();) {
730	<	q.remove();
808	<	it.next();
809	<	}
810	<	}
811	<	catch (ConcurrentModificationException e) {
812	<	unexpectedException();
728	>	for (Iterator it = q.iterator(); it.hasNext();) {
729	>	q.remove();
730	>	it.next();
731		}
732		assertEquals(0, q.size());
733		}
#	Line 824 | Line 742 | public class LinkedBlockingQueueTest ext
742		for (int i = 0; i < SIZE; ++i) {
743		assertTrue(s.indexOf(String.valueOf(i)) >= 0);
744		}
745	<	}
745	>	}
746
747
748		/**
#	Line 835 | Line 753 | public class LinkedBlockingQueueTest ext
753		q.add(one);
754		q.add(two);
755		ExecutorService executor = Executors.newFixedThreadPool(2);
756	<	executor.execute(new Runnable() {
757	<	public void run() {
756	>	executor.execute(new CheckedRunnable() {
757	>	public void realRun() throws InterruptedException {
758		threadAssertFalse(q.offer(three));
759	<	try {
760	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
761	<	threadAssertEquals(0, q.remainingCapacity());
762	<	}
763	<	catch (InterruptedException e) {
764	<	threadUnexpectedException();
765	<	}
766	<	}
767	<	});
759	>	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS));
760	>	threadAssertEquals(0, q.remainingCapacity());
761	>	}});
762	>
763	>	executor.execute(new CheckedRunnable() {
764	>	public void realRun() throws InterruptedException {
765	>	Thread.sleep(SMALL_DELAY_MS);
766	>	threadAssertEquals(one, q.take());
767	>	}});
768
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	–
769		joinPool(executor);
770		}
771
#	Line 869 | Line 775 | public class LinkedBlockingQueueTest ext
775		public void testPollInExecutor() {
776		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
777		ExecutorService executor = Executors.newFixedThreadPool(2);
778	<	executor.execute(new Runnable() {
779	<	public void run() {
778	>	executor.execute(new CheckedRunnable() {
779	>	public void realRun() throws InterruptedException {
780		threadAssertNull(q.poll());
781	<	try {
782	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
783	<	threadAssertTrue(q.isEmpty());
784	<	}
785	<	catch (InterruptedException e) {
786	<	threadUnexpectedException();
787	<	}
788	<	}
789	<	});
781	>	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
782	>	threadAssertTrue(q.isEmpty());
783	>	}});
784	>
785	>	executor.execute(new CheckedRunnable() {
786	>	public void realRun() throws InterruptedException {
787	>	Thread.sleep(SMALL_DELAY_MS);
788	>	q.put(one);
789	>	}});
790
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	–
791		joinPool(executor);
792		}
793
794		/**
795		* A deserialized serialized queue has same elements in same order
796		*/
797	<	public void testSerialization() {
797	>	public void testSerialization() throws Exception {
798		LinkedBlockingQueue q = populatedQueue(SIZE);
799
800	<	try {
801	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
802	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
803	<	out.writeObject(q);
804	<	out.close();
805	<
806	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
807	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
808	<	LinkedBlockingQueue r = (LinkedBlockingQueue)in.readObject();
809	<	assertEquals(q.size(), r.size());
810	<	while (!q.isEmpty())
917	<	assertEquals(q.remove(), r.remove());
918	<	} catch(Exception e){
919	<	unexpectedException();
920	<	}
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())
810	>	assertEquals(q.remove(), r.remove());
811		}
812
813		/**
814		* drainTo(null) throws NPE
815	<	*/
815	>	*/
816		public void testDrainToNull() {
817		LinkedBlockingQueue q = populatedQueue(SIZE);
818		try {
819		q.drainTo(null);
820		shouldThrow();
821	<	} catch(NullPointerException success) {
932	<	}
821	>	} catch (NullPointerException success) {}
822		}
823
824		/**
825		* drainTo(this) throws IAE
826	<	*/
826	>	*/
827		public void testDrainToSelf() {
828		LinkedBlockingQueue q = populatedQueue(SIZE);
829		try {
830		q.drainTo(q);
831		shouldThrow();
832	<	} catch(IllegalArgumentException success) {
944	<	}
832	>	} catch (IllegalArgumentException success) {}
833		}
834
835		/**
836		* drainTo(c) empties queue into another collection c
837	<	*/
837	>	*/
838		public void testDrainTo() {
839		LinkedBlockingQueue q = populatedQueue(SIZE);
840		ArrayList l = new ArrayList();
841		q.drainTo(l);
842		assertEquals(q.size(), 0);
843		assertEquals(l.size(), SIZE);
844	<	for (int i = 0; i < SIZE; ++i)
844	>	for (int i = 0; i < SIZE; ++i)
845	>	assertEquals(l.get(i), new Integer(i));
846	>	q.add(zero);
847	>	q.add(one);
848	>	assertFalse(q.isEmpty());
849	>	assertTrue(q.contains(zero));
850	>	assertTrue(q.contains(one));
851	>	l.clear();
852	>	q.drainTo(l);
853	>	assertEquals(q.size(), 0);
854	>	assertEquals(l.size(), 2);
855	>	for (int i = 0; i < 2; ++i)
856		assertEquals(l.get(i), new Integer(i));
857		}
858
859		/**
860		* drainTo empties full queue, unblocking a waiting put.
861	<	*/
862	<	public void testDrainToWithActivePut() {
861	>	*/
862	>	public void testDrainToWithActivePut() throws InterruptedException {
863		final LinkedBlockingQueue q = populatedQueue(SIZE);
864	<	Thread t = new Thread(new Runnable() {
865	<	public void run() {
866	<	try {
867	<	q.put(new Integer(SIZE+1));
868	<	} catch (InterruptedException ie){
869	<	threadUnexpectedException();
870	<	}
871	<	}
872	<	});
873	<	try {
874	<	t.start();
875	<	ArrayList l = new ArrayList();
876	<	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	<	}
864	>	Thread t = new Thread(new CheckedRunnable() {
865	>	public void realRun() throws InterruptedException {
866	>	q.put(new Integer(SIZE+1));
867	>	}});
868	>
869	>	t.start();
870	>	ArrayList l = new ArrayList();
871	>	q.drainTo(l);
872	>	assertTrue(l.size() >= SIZE);
873	>	for (int i = 0; i < SIZE; ++i)
874	>	assertEquals(l.get(i), new Integer(i));
875	>	t.join();
876	>	assertTrue(q.size() + l.size() >= SIZE);
877		}
878
879		/**
880		* drainTo(null, n) throws NPE
881	<	*/
881	>	*/
882		public void testDrainToNullN() {
883		LinkedBlockingQueue q = populatedQueue(SIZE);
884		try {
885		q.drainTo(null, 0);
886		shouldThrow();
887	<	} catch(NullPointerException success) {
997	<	}
887	>	} catch (NullPointerException success) {}
888		}
889
890		/**
891		* drainTo(this, n) throws IAE
892	<	*/
892	>	*/
893		public void testDrainToSelfN() {
894		LinkedBlockingQueue q = populatedQueue(SIZE);
895		try {
896		q.drainTo(q, 0);
897		shouldThrow();
898	<	} catch(IllegalArgumentException success) {
1009	<	}
898	>	} catch (IllegalArgumentException success) {}
899		}
900
901		/**
902		* drainTo(c, n) empties first max {n, size} elements of queue into c
903	<	*/
903	>	*/
904		public void testDrainToN() {
905	+	LinkedBlockingQueue q = new LinkedBlockingQueue();
906		for (int i = 0; i < SIZE + 2; ++i) {
907	<	LinkedBlockingQueue q = populatedQueue(SIZE);
907	>	for (int j = 0; j < SIZE; j++)
908	>	assertTrue(q.offer(new Integer(j)));
909		ArrayList l = new ArrayList();
910		q.drainTo(l, i);
911		int k = (i < SIZE)? i : SIZE;
1021	–	assertEquals(q.size(), SIZE-k);
912		assertEquals(l.size(), k);
913	<	for (int j = 0; j < k; ++j)
913	>	assertEquals(q.size(), SIZE-k);
914	>	for (int j = 0; j < k; ++j)
915		assertEquals(l.get(j), new Integer(j));
916	+	while (q.poll() != null) ;
917		}
918		}
919

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