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

Comparing jsr166/src/test/tck/LinkedBlockingQueueTest.java (file contents):
Revision 1.4 by dl, Sat Sep 20 18:20:08 2003 UTC vs.
Revision 1.15 by jsr166, Sat Nov 21 02:07:26 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.*;
#	Line 13 | Line 14 | import java.io.*;
14		public class LinkedBlockingQueueTest extends JSR166TestCase {
15
16		public static void main(String[] args) {
17	<	junit.textui.TestRunner.run (suite());
17	>	junit.textui.TestRunner.run (suite());
18		}
19
20		public static Test suite() {
21	<	return new TestSuite(LinkedBlockingQueueTest.class);
21	>	return new TestSuite(LinkedBlockingQueueTest.class);
22		}
23
24
#	Line 28 | Line 29 | public class LinkedBlockingQueueTest ext
29		private LinkedBlockingQueue populatedQueue(int n) {
30		LinkedBlockingQueue q = new LinkedBlockingQueue(n);
31		assertTrue(q.isEmpty());
32	<	for(int i = 0; i < n; i++)
33	<	assertTrue(q.offer(new Integer(i)));
32	>	for (int i = 0; i < n; i++)
33	>	assertTrue(q.offer(new Integer(i)));
34		assertFalse(q.isEmpty());
35		assertEquals(0, q.remainingCapacity());
36	<	assertEquals(n, q.size());
36	>	assertEquals(n, q.size());
37		return q;
38		}
39	<
39	>
40		/**
41	<	*
41	>	* A new queue has the indicated capacity, or Integer.MAX_VALUE if
42	>	* none given
43		*/
44		public void testConstructor1() {
45		assertEquals(SIZE, new LinkedBlockingQueue(SIZE).remainingCapacity());
46	+	assertEquals(Integer.MAX_VALUE, new LinkedBlockingQueue().remainingCapacity());
47		}
48
49		/**
50	<	*
50	>	* Constructor throws IAE if  capacity argument nonpositive
51		*/
52		public void testConstructor2() {
53		try {
#	Line 55 | Line 58 | public class LinkedBlockingQueueTest ext
58		}
59
60		/**
61	<	*
61	>	* Initializing from null Collection throws NPE
62		*/
63		public void testConstructor3() {
61	–
64		try {
65		LinkedBlockingQueue q = new LinkedBlockingQueue(null);
66		shouldThrow();
#	Line 67 | Line 69 | public class LinkedBlockingQueueTest ext
69		}
70
71		/**
72	<	*
72	>	* Initializing from Collection of null elements throws NPE
73		*/
74		public void testConstructor4() {
75		try {
#	Line 79 | Line 81 | public class LinkedBlockingQueueTest ext
81		}
82
83		/**
84	<	*
84	>	* Initializing from Collection with some null elements throws NPE
85		*/
86		public void testConstructor5() {
87		try {
#	Line 93 | Line 95 | public class LinkedBlockingQueueTest ext
95		}
96
97		/**
98	<	*
98	>	* Queue contains all elements of collection used to initialize
99		*/
100		public void testConstructor6() {
101		try {
#	Line 108 | Line 110 | public class LinkedBlockingQueueTest ext
110		}
111
112		/**
113	<	*
113	>	* Queue transitions from empty to full when elements added
114		*/
115		public void testEmptyFull() {
116		LinkedBlockingQueue q = new LinkedBlockingQueue(2);
#	Line 123 | Line 125 | public class LinkedBlockingQueueTest ext
125		}
126
127		/**
128	<	*
128	>	* remainingCapacity decreases on add, increases on remove
129		*/
130		public void testRemainingCapacity() {
131		LinkedBlockingQueue q = populatedQueue(SIZE);
#	Line 140 | Line 142 | public class LinkedBlockingQueueTest ext
142		}
143
144		/**
145	<	*
145	>	* offer(null) throws NPE
146		*/
147		public void testOfferNull() {
148	<	try {
148	>	try {
149		LinkedBlockingQueue q = new LinkedBlockingQueue(1);
150		q.offer(null);
151		shouldThrow();
152	<	} catch (NullPointerException success) { }
152	>	} catch (NullPointerException success) { }
153	>	}
154	>
155	>	/**
156	>	* add(null) throws NPE
157	>	*/
158	>	public void testAddNull() {
159	>	try {
160	>	LinkedBlockingQueue q = new LinkedBlockingQueue(1);
161	>	q.add(null);
162	>	shouldThrow();
163	>	} catch (NullPointerException success) { }
164		}
165
166		/**
167	<	*
167	>	* Offer succeeds if not full; fails if full
168		*/
169		public void testOffer() {
170		LinkedBlockingQueue q = new LinkedBlockingQueue(1);
#	Line 160 | Line 173 | public class LinkedBlockingQueueTest ext
173		}
174
175		/**
176	<	*
176	>	* add succeeds if not full; throws ISE if full
177		*/
178		public void testAdd() {
179	<	try {
179	>	try {
180		LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
181		for (int i = 0; i < SIZE; ++i) {
182		assertTrue(q.add(new Integer(i)));
183		}
184		assertEquals(0, q.remainingCapacity());
185		q.add(new Integer(SIZE));
186	<	} catch (IllegalStateException success){
187	<	}
186	>	} catch (IllegalStateException success) {
187	>	}
188		}
189
190		/**
191	<	*
191	>	* addAll(null) throws NPE
192		*/
193		public void testAddAll1() {
194		try {
#	Line 185 | Line 198 | public class LinkedBlockingQueueTest ext
198		}
199		catch (NullPointerException success) {}
200		}
201	+
202		/**
203	<	*
203	>	* addAll(this) throws IAE
204	>	*/
205	>	public void testAddAllSelf() {
206	>	try {
207	>	LinkedBlockingQueue q = populatedQueue(SIZE);
208	>	q.addAll(q);
209	>	shouldThrow();
210	>	}
211	>	catch (IllegalArgumentException success) {}
212	>	}
213	>
214	>	/**
215	>	* addAll of a collection with null elements throws NPE
216		*/
217		public void testAddAll2() {
218		try {
#	Line 198 | Line 224 | public class LinkedBlockingQueueTest ext
224		catch (NullPointerException success) {}
225		}
226		/**
227	<	*
227	>	* addAll of a collection with any null elements throws NPE after
228	>	* possibly adding some elements
229		*/
230		public void testAddAll3() {
231		try {
#	Line 212 | Line 239 | public class LinkedBlockingQueueTest ext
239		catch (NullPointerException success) {}
240		}
241		/**
242	<	*
242	>	* addAll throws ISE if not enough room
243		*/
244		public void testAddAll4() {
245		try {
#	Line 226 | Line 253 | public class LinkedBlockingQueueTest ext
253		catch (IllegalStateException success) {}
254		}
255		/**
256	<	*
256	>	* Queue contains all elements, in traversal order, of successful addAll
257		*/
258		public void testAddAll5() {
259		try {
#	Line 244 | Line 271 | public class LinkedBlockingQueueTest ext
271		}
272
273		/**
274	<	*
274	>	* put(null) throws NPE
275		*/
276		public void testPutNull() {
277	<	try {
277	>	try {
278		LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
279		q.put(null);
280		shouldThrow();
281	<	}
282	<	catch (NullPointerException success){
283	<	}
281	>	}
282	>	catch (NullPointerException success) {
283	>	}
284		catch (InterruptedException ie) {
285	<	unexpectedException();
285	>	unexpectedException();
286		}
287		}
288
289		/**
290	<	*
290	>	* all elements successfully put are contained
291		*/
292		public void testPut() {
293		try {
#	Line 273 | Line 300 | public class LinkedBlockingQueueTest ext
300		assertEquals(0, q.remainingCapacity());
301		}
302		catch (InterruptedException ie) {
303	<	unexpectedException();
303	>	unexpectedException();
304		}
305		}
306
307		/**
308	<	*
308	>	* put blocks interruptibly if full
309		*/
310		public void testBlockingPut() {
311		Thread t = new Thread(new Runnable() {
#	Line 292 | Line 319 | public class LinkedBlockingQueueTest ext
319		}
320		q.put(new Integer(SIZE));
321		threadShouldThrow();
322	<	} catch (InterruptedException ie){
322	>	} catch (InterruptedException ie) {
323		threadAssertEquals(added, SIZE);
324	<	}
324	>	}
325		}});
326		t.start();
327	<	try {
328	<	Thread.sleep(SHORT_DELAY_MS);
327	>	try {
328	>	Thread.sleep(SHORT_DELAY_MS);
329		t.interrupt();
330		t.join();
331		}
332		catch (InterruptedException ie) {
333	<	unexpectedException();
333	>	unexpectedException();
334		}
335		}
336
337		/**
338	<	*
338	>	* put blocks waiting for take when full
339		*/
340		public void testPutWithTake() {
341		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
#	Line 324 | Line 351 | public class LinkedBlockingQueueTest ext
351		++added;
352		q.put(new Object());
353		++added;
354	<	threadShouldThrow();
355	<	} catch (InterruptedException e){
354	>	threadShouldThrow();
355	>	} catch (InterruptedException e) {
356		threadAssertTrue(added >= 2);
357		}
358		}
#	Line 336 | Line 363 | public class LinkedBlockingQueueTest ext
363		q.take();
364		t.interrupt();
365		t.join();
366	<	} catch (Exception e){
366	>	} catch (Exception e) {
367		unexpectedException();
368		}
369		}
370
371		/**
372	<	*
372	>	* timed offer times out if full and elements not taken
373		*/
374		public void testTimedOffer() {
375		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
#	Line 353 | Line 380 | public class LinkedBlockingQueueTest ext
380		q.put(new Object());
381		threadAssertFalse(q.offer(new Object(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
382		q.offer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS);
383	<	threadShouldThrow();
384	<	} catch (InterruptedException success){}
383	>	threadShouldThrow();
384	>	} catch (InterruptedException success) {}
385		}
386		});
387	<
387	>
388		try {
389		t.start();
390		Thread.sleep(SMALL_DELAY_MS);
391		t.interrupt();
392		t.join();
393	<	} catch (Exception e){
393	>	} catch (Exception e) {
394		unexpectedException();
395		}
396		}
397
398		/**
399	<	*
399	>	* take retrieves elements in FIFO order
400		*/
401		public void testTake() {
402	<	try {
402	>	try {
403		LinkedBlockingQueue q = populatedQueue(SIZE);
404		for (int i = 0; i < SIZE; ++i) {
405		assertEquals(i, ((Integer)q.take()).intValue());
406		}
407	<	} catch (InterruptedException e){
408	<	unexpectedException();
409	<	}
407	>	} catch (InterruptedException e) {
408	>	unexpectedException();
409	>	}
410		}
411
412		/**
413	<	*
413	>	* take blocks interruptibly when empty
414		*/
415		public void testTakeFromEmpty() {
416		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
#	Line 391 | Line 418 | public class LinkedBlockingQueueTest ext
418		public void run() {
419		try {
420		q.take();
421	<	threadShouldThrow();
422	<	} catch (InterruptedException success){ }
421	>	threadShouldThrow();
422	>	} catch (InterruptedException success) { }
423		}
424		});
425		try {
#	Line 400 | Line 427 | public class LinkedBlockingQueueTest ext
427		Thread.sleep(SHORT_DELAY_MS);
428		t.interrupt();
429		t.join();
430	<	} catch (Exception e){
430	>	} catch (Exception e) {
431		unexpectedException();
432		}
433		}
434
435		/**
436	<	*
436	>	* Take removes existing elements until empty, then blocks interruptibly
437		*/
438		public void testBlockingTake() {
439		Thread t = new Thread(new Runnable() {
#	Line 418 | Line 445 | public class LinkedBlockingQueueTest ext
445		}
446		q.take();
447		threadShouldThrow();
448	<	} catch (InterruptedException success){
449	<	}
448	>	} catch (InterruptedException success) {
449	>	}
450		}});
451		t.start();
452	<	try {
453	<	Thread.sleep(SHORT_DELAY_MS);
452	>	try {
453	>	Thread.sleep(SHORT_DELAY_MS);
454		t.interrupt();
455		t.join();
456		}
457		catch (InterruptedException ie) {
458	<	unexpectedException();
458	>	unexpectedException();
459		}
460		}
461
462
463		/**
464	<	*
464	>	* poll succeeds unless empty
465		*/
466		public void testPoll() {
467		LinkedBlockingQueue q = populatedQueue(SIZE);
468		for (int i = 0; i < SIZE; ++i) {
469		assertEquals(i, ((Integer)q.poll()).intValue());
470		}
471	<	assertNull(q.poll());
471	>	assertNull(q.poll());
472		}
473
474		/**
475	<	*
475	>	* timed pool with zero timeout succeeds when non-empty, else times out
476		*/
477		public void testTimedPoll0() {
478		try {
#	Line 454 | Line 481 | public class LinkedBlockingQueueTest ext
481		assertEquals(i, ((Integer)q.poll(0, TimeUnit.MILLISECONDS)).intValue());
482		}
483		assertNull(q.poll(0, TimeUnit.MILLISECONDS));
484	<	} catch (InterruptedException e){
485	<	unexpectedException();
486	<	}
484	>	} catch (InterruptedException e) {
485	>	unexpectedException();
486	>	}
487		}
488
489		/**
490	<	*
490	>	* timed pool with nonzero timeout succeeds when non-empty, else times out
491		*/
492		public void testTimedPoll() {
493		try {
#	Line 469 | Line 496 | public class LinkedBlockingQueueTest ext
496		assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
497		}
498		assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
499	<	} catch (InterruptedException e){
500	<	unexpectedException();
501	<	}
499	>	} catch (InterruptedException e) {
500	>	unexpectedException();
501	>	}
502		}
503
504		/**
505	<	*
505	>	* Interrupted timed poll throws InterruptedException instead of
506	>	* returning timeout status
507		*/
508		public void testInterruptedTimedPoll() {
509		Thread t = new Thread(new Runnable() {
#	Line 486 | Line 514 | public class LinkedBlockingQueueTest ext
514		threadAssertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
515		}
516		threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
517	<	} catch (InterruptedException success){
518	<	}
517	>	} catch (InterruptedException success) {
518	>	}
519		}});
520		t.start();
521	<	try {
522	<	Thread.sleep(SHORT_DELAY_MS);
521	>	try {
522	>	Thread.sleep(SHORT_DELAY_MS);
523		t.interrupt();
524		t.join();
525		}
526		catch (InterruptedException ie) {
527	<	unexpectedException();
527	>	unexpectedException();
528		}
529		}
530
531		/**
532	<	*
532	>	*  timed poll before a delayed offer fails; after offer succeeds;
533	>	*  on interruption throws
534		*/
535		public void testTimedPollWithOffer() {
536		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
#	Line 511 | Line 540 | public class LinkedBlockingQueueTest ext
540		threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
541		q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
542		q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
543	<	threadShouldThrow();
544	<	} catch (InterruptedException success) { }
543	>	threadShouldThrow();
544	>	} catch (InterruptedException success) { }
545		}
546		});
547		try {
#	Line 521 | Line 550 | public class LinkedBlockingQueueTest ext
550		assertTrue(q.offer(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
551		t.interrupt();
552		t.join();
553	<	} catch (Exception e){
553	>	} catch (Exception e) {
554		unexpectedException();
555		}
556	<	}
528	<
556	>	}
557
558		/**
559	<	*
559	>	* peek returns next element, or null if empty
560		*/
561		public void testPeek() {
562		LinkedBlockingQueue q = populatedQueue(SIZE);
#	Line 538 | Line 566 | public class LinkedBlockingQueueTest ext
566		assertTrue(q.peek() == null ||
567		i != ((Integer)q.peek()).intValue());
568		}
569	<	assertNull(q.peek());
569	>	assertNull(q.peek());
570		}
571
572		/**
573	<	*
573	>	* element returns next element, or throws NSEE if empty
574		*/
575		public void testElement() {
576		LinkedBlockingQueue q = populatedQueue(SIZE);
#	Line 558 | Line 586 | public class LinkedBlockingQueueTest ext
586		}
587
588		/**
589	<	*
589	>	* remove removes next element, or throws NSEE if empty
590		*/
591		public void testRemove() {
592		LinkedBlockingQueue q = populatedQueue(SIZE);
#	Line 568 | Line 596 | public class LinkedBlockingQueueTest ext
596		try {
597		q.remove();
598		shouldThrow();
599	<	} catch (NoSuchElementException success){
600	<	}
599	>	} catch (NoSuchElementException success) {
600	>	}
601		}
602
603		/**
604	<	*
604	>	* remove(x) removes x and returns true if present
605		*/
606		public void testRemoveElement() {
607		LinkedBlockingQueue q = populatedQueue(SIZE);
#	Line 586 | Line 614 | public class LinkedBlockingQueueTest ext
614		}
615		assertTrue(q.isEmpty());
616		}
617	<
617	>
618	>	/**
619	>	* An add following remove(x) succeeds
620	>	*/
621	>	public void testRemoveElementAndAdd() {
622	>	try {
623	>	LinkedBlockingQueue q = new LinkedBlockingQueue();
624	>	assertTrue(q.add(new Integer(1)));
625	>	assertTrue(q.add(new Integer(2)));
626	>	assertTrue(q.remove(new Integer(1)));
627	>	assertTrue(q.remove(new Integer(2)));
628	>	assertTrue(q.add(new Integer(3)));
629	>	assertTrue(q.take() != null);
630	>	} catch (Exception e) {
631	>	unexpectedException();
632	>	}
633	>	}
634	>
635		/**
636	<	*
636	>	* contains(x) reports true when elements added but not yet removed
637		*/
638		public void testContains() {
639		LinkedBlockingQueue q = populatedQueue(SIZE);
#	Line 600 | Line 645 | public class LinkedBlockingQueueTest ext
645		}
646
647		/**
648	<	*
648	>	* clear removes all elements
649		*/
650		public void testClear() {
651		LinkedBlockingQueue q = populatedQueue(SIZE);
#	Line 610 | Line 655 | public class LinkedBlockingQueueTest ext
655		assertEquals(SIZE, q.remainingCapacity());
656		q.add(one);
657		assertFalse(q.isEmpty());
658	+	assertTrue(q.contains(one));
659		q.clear();
660		assertTrue(q.isEmpty());
661		}
662
663		/**
664	<	*
664	>	* containsAll(c) is true when c contains a subset of elements
665		*/
666		public void testContainsAll() {
667		LinkedBlockingQueue q = populatedQueue(SIZE);
#	Line 629 | Line 675 | public class LinkedBlockingQueueTest ext
675		}
676
677		/**
678	<	*
678	>	* retainAll(c) retains only those elements of c and reports true if changed
679		*/
680		public void testRetainAll() {
681		LinkedBlockingQueue q = populatedQueue(SIZE);
#	Line 648 | Line 694 | public class LinkedBlockingQueueTest ext
694		}
695
696		/**
697	<	*
697	>	* removeAll(c) removes only those elements of c and reports true if changed
698		*/
699		public void testRemoveAll() {
700		for (int i = 1; i < SIZE; ++i) {
#	Line 663 | Line 709 | public class LinkedBlockingQueueTest ext
709		}
710		}
711
666	–
712		/**
713	<	*
713	>	* toArray contains all elements
714		*/
715		public void testToArray() {
716		LinkedBlockingQueue q = populatedQueue(SIZE);
717	<	Object[] o = q.toArray();
718	<	try {
719	<	for(int i = 0; i < o.length; i++)
720	<	assertEquals(o[i], q.take());
721	<	} catch (InterruptedException e){
722	<	unexpectedException();
723	<	}
717	>	Object[] o = q.toArray();
718	>	try {
719	>	for (int i = 0; i < o.length; i++)
720	>	assertEquals(o[i], q.take());
721	>	} catch (InterruptedException e) {
722	>	unexpectedException();
723	>	}
724		}
725
726		/**
727	<	*
727	>	* toArray(a) contains all elements
728		*/
729		public void testToArray2() {
730		LinkedBlockingQueue q = populatedQueue(SIZE);
731	<	Integer[] ints = new Integer[SIZE];
732	<	ints = (Integer[])q.toArray(ints);
733	<	try {
734	<	for(int i = 0; i < ints.length; i++)
735	<	assertEquals(ints[i], q.take());
736	<	} catch (InterruptedException e){
737	<	unexpectedException();
738	<	}
731	>	Integer[] ints = new Integer[SIZE];
732	>	ints = (Integer[])q.toArray(ints);
733	>	try {
734	>	for (int i = 0; i < ints.length; i++)
735	>	assertEquals(ints[i], q.take());
736	>	} catch (InterruptedException e) {
737	>	unexpectedException();
738	>	}
739	>	}
740	>
741	>	/**
742	>	* toArray(null) throws NPE
743	>	*/
744	>	public void testToArray_BadArg() {
745	>	try {
746	>	LinkedBlockingQueue q = populatedQueue(SIZE);
747	>	Object o[] = q.toArray(null);
748	>	shouldThrow();
749	>	} catch (NullPointerException success) {}
750	>	}
751	>
752	>	/**
753	>	* toArray with incompatible array type throws CCE
754	>	*/
755	>	public void testToArray1_BadArg() {
756	>	try {
757	>	LinkedBlockingQueue q = populatedQueue(SIZE);
758	>	Object o[] = q.toArray(new String[10] );
759	>	shouldThrow();
760	>	} catch (ArrayStoreException  success) {}
761		}
762	<
762	>
763	>
764		/**
765	<	*
765	>	* iterator iterates through all elements
766		*/
767		public void testIterator() {
768		LinkedBlockingQueue q = populatedQueue(SIZE);
769	<	Iterator it = q.iterator();
770	<	try {
771	<	while(it.hasNext()){
772	<	assertEquals(it.next(), q.take());
773	<	}
774	<	} catch (InterruptedException e){
775	<	unexpectedException();
776	<	}
769	>	Iterator it = q.iterator();
770	>	try {
771	>	while (it.hasNext()) {
772	>	assertEquals(it.next(), q.take());
773	>	}
774	>	} catch (InterruptedException e) {
775	>	unexpectedException();
776	>	}
777		}
778
779		/**
780	<	*
780	>	* iterator.remove removes current element
781		*/
782	<	public void testIteratorOrdering() {
715	<
782	>	public void testIteratorRemove () {
783		final LinkedBlockingQueue q = new LinkedBlockingQueue(3);
784	+	q.add(two);
785	+	q.add(one);
786	+	q.add(three);
787	+
788	+	Iterator it = q.iterator();
789	+	it.next();
790	+	it.remove();
791	+
792	+	it = q.iterator();
793	+	assertEquals(it.next(), one);
794	+	assertEquals(it.next(), three);
795	+	assertFalse(it.hasNext());
796	+	}
797	+
798
799	+	/**
800	+	* iterator ordering is FIFO
801	+	*/
802	+	public void testIteratorOrdering() {
803	+	final LinkedBlockingQueue q = new LinkedBlockingQueue(3);
804		q.add(one);
805		q.add(two);
806		q.add(three);
721	–
807		assertEquals(0, q.remainingCapacity());
723	–
808		int k = 0;
809		for (Iterator it = q.iterator(); it.hasNext();) {
810		int i = ((Integer)(it.next())).intValue();
811		assertEquals(++k, i);
812		}
729	–
813		assertEquals(3, k);
814		}
815
816		/**
817	<	*
817	>	* Modifications do not cause iterators to fail
818		*/
819		public void testWeaklyConsistentIteration () {
737	–
820		final LinkedBlockingQueue q = new LinkedBlockingQueue(3);
739	–
821		q.add(one);
822		q.add(two);
823		q.add(three);
743	–
824		try {
825		for (Iterator it = q.iterator(); it.hasNext();) {
826		q.remove();
#	Line 750 | Line 830 | public class LinkedBlockingQueueTest ext
830		catch (ConcurrentModificationException e) {
831		unexpectedException();
832		}
753	–
833		assertEquals(0, q.size());
834		}
835
836
837		/**
838	<	*
838	>	* toString contains toStrings of elements
839		*/
840		public void testToString() {
841		LinkedBlockingQueue q = populatedQueue(SIZE);
#	Line 764 | Line 843 | public class LinkedBlockingQueueTest ext
843		for (int i = 0; i < SIZE; ++i) {
844		assertTrue(s.indexOf(String.valueOf(i)) >= 0);
845		}
846	<	}
846	>	}
847
848
849		/**
850	<	*
850	>	* offer transfers elements across Executor tasks
851		*/
852		public void testOfferInExecutor() {
774	–
853		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
776	–
854		q.add(one);
855		q.add(two);
779	–
856		ExecutorService executor = Executors.newFixedThreadPool(2);
781	–
857		executor.execute(new Runnable() {
858		public void run() {
859		threadAssertFalse(q.offer(three));
#	Line 803 | Line 878 | public class LinkedBlockingQueueTest ext
878		}
879		}
880		});
806	–
807	–	joinPool(executor);
881
882	+	joinPool(executor);
883		}
884
885		/**
886	<	*
886	>	* poll retrieves elements across Executor threads
887		*/
888		public void testPollInExecutor() {
815	–
889		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
817	–
890		ExecutorService executor = Executors.newFixedThreadPool(2);
819	–
891		executor.execute(new Runnable() {
892		public void run() {
893		threadAssertNull(q.poll());
#	Line 841 | Line 912 | public class LinkedBlockingQueueTest ext
912		}
913		}
914		});
915	<
915	>
916		joinPool(executor);
917		}
918
919		/**
920	<	*
920	>	* A deserialized serialized queue has same elements in same order
921		*/
922		public void testSerialization() {
923		LinkedBlockingQueue q = populatedQueue(SIZE);
#	Line 861 | Line 932 | public class LinkedBlockingQueueTest ext
932		ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
933		LinkedBlockingQueue r = (LinkedBlockingQueue)in.readObject();
934		assertEquals(q.size(), r.size());
935	<	while (!q.isEmpty())
935	>	while (!q.isEmpty())
936		assertEquals(q.remove(), r.remove());
937	<	} catch(Exception e){
937	>	} catch (Exception e) {
938	>	unexpectedException();
939	>	}
940	>	}
941	>
942	>	/**
943	>	* drainTo(null) throws NPE
944	>	*/
945	>	public void testDrainToNull() {
946	>	LinkedBlockingQueue q = populatedQueue(SIZE);
947	>	try {
948	>	q.drainTo(null);
949	>	shouldThrow();
950	>	} catch (NullPointerException success) {
951	>	}
952	>	}
953	>
954	>	/**
955	>	* drainTo(this) throws IAE
956	>	*/
957	>	public void testDrainToSelf() {
958	>	LinkedBlockingQueue q = populatedQueue(SIZE);
959	>	try {
960	>	q.drainTo(q);
961	>	shouldThrow();
962	>	} catch (IllegalArgumentException success) {
963	>	}
964	>	}
965	>
966	>	/**
967	>	* drainTo(c) empties queue into another collection c
968	>	*/
969	>	public void testDrainTo() {
970	>	LinkedBlockingQueue q = populatedQueue(SIZE);
971	>	ArrayList l = new ArrayList();
972	>	q.drainTo(l);
973	>	assertEquals(q.size(), 0);
974	>	assertEquals(l.size(), SIZE);
975	>	for (int i = 0; i < SIZE; ++i)
976	>	assertEquals(l.get(i), new Integer(i));
977	>	q.add(zero);
978	>	q.add(one);
979	>	assertFalse(q.isEmpty());
980	>	assertTrue(q.contains(zero));
981	>	assertTrue(q.contains(one));
982	>	l.clear();
983	>	q.drainTo(l);
984	>	assertEquals(q.size(), 0);
985	>	assertEquals(l.size(), 2);
986	>	for (int i = 0; i < 2; ++i)
987	>	assertEquals(l.get(i), new Integer(i));
988	>	}
989	>
990	>	/**
991	>	* drainTo empties full queue, unblocking a waiting put.
992	>	*/
993	>	public void testDrainToWithActivePut() {
994	>	final LinkedBlockingQueue q = populatedQueue(SIZE);
995	>	Thread t = new Thread(new Runnable() {
996	>	public void run() {
997	>	try {
998	>	q.put(new Integer(SIZE+1));
999	>	} catch (InterruptedException ie) {
1000	>	threadUnexpectedException();
1001	>	}
1002	>	}
1003	>	});
1004	>	try {
1005	>	t.start();
1006	>	ArrayList l = new ArrayList();
1007	>	q.drainTo(l);
1008	>	assertTrue(l.size() >= SIZE);
1009	>	for (int i = 0; i < SIZE; ++i)
1010	>	assertEquals(l.get(i), new Integer(i));
1011	>	t.join();
1012	>	assertTrue(q.size() + l.size() >= SIZE);
1013	>	} catch (Exception e) {
1014		unexpectedException();
1015		}
1016		}
1017
1018	+	/**
1019	+	* drainTo(null, n) throws NPE
1020	+	*/
1021	+	public void testDrainToNullN() {
1022	+	LinkedBlockingQueue q = populatedQueue(SIZE);
1023	+	try {
1024	+	q.drainTo(null, 0);
1025	+	shouldThrow();
1026	+	} catch (NullPointerException success) {
1027	+	}
1028	+	}
1029	+
1030	+	/**
1031	+	* drainTo(this, n) throws IAE
1032	+	*/
1033	+	public void testDrainToSelfN() {
1034	+	LinkedBlockingQueue q = populatedQueue(SIZE);
1035	+	try {
1036	+	q.drainTo(q, 0);
1037	+	shouldThrow();
1038	+	} catch (IllegalArgumentException success) {
1039	+	}
1040	+	}
1041	+
1042	+	/**
1043	+	* drainTo(c, n) empties first max {n, size} elements of queue into c
1044	+	*/
1045	+	public void testDrainToN() {
1046	+	LinkedBlockingQueue q = new LinkedBlockingQueue();
1047	+	for (int i = 0; i < SIZE + 2; ++i) {
1048	+	for (int j = 0; j < SIZE; j++)
1049	+	assertTrue(q.offer(new Integer(j)));
1050	+	ArrayList l = new ArrayList();
1051	+	q.drainTo(l, i);
1052	+	int k = (i < SIZE)? i : SIZE;
1053	+	assertEquals(l.size(), k);
1054	+	assertEquals(q.size(), SIZE-k);
1055	+	for (int j = 0; j < k; ++j)
1056	+	assertEquals(l.get(j), new Integer(j));
1057	+	while (q.poll() != null) ;
1058	+	}
1059	+	}
1060	+
1061		}

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