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

Comparing jsr166/src/test/tck/DelayQueueTest.java (file contents):
Revision 1.3 by dl, Sun Sep 14 20:42:40 2003 UTC vs.
Revision 1.10 by dl, Tue Jun 1 12:54:09 2004 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 20 | Line 21 | public class DelayQueueTest extends JSR1
21
22		private static final int NOCAP = Integer.MAX_VALUE;
23
24	<	// Most Q/BQ tests use Pseudodelays, where delays are all elapsed
25	<	// (so, no blocking solely for delays) but are still ordered
26	<
24	>	/**
25	>	* A delayed implementation for testing.
26	>	* Most  tests use Pseudodelays, where delays are all elapsed
27	>	* (so, no blocking solely for delays) but are still ordered
28	>	*/
29		static class PDelay implements Delayed {
30		int pseudodelay;
31		PDelay(int i) { pseudodelay = Integer.MIN_VALUE + i; }
32	<	public int compareTo(Object y) {
32	>	public int compareTo(PDelay y) {
33		int i = pseudodelay;
34		int j = ((PDelay)y).pseudodelay;
35		if (i < j) return -1;
#	Line 34 | Line 37 | public class DelayQueueTest extends JSR1
37		return 0;
38		}
39
40	<	public int compareTo(PDelay y) {
40	>	public int compareTo(Delayed y) {
41		int i = pseudodelay;
42		int j = ((PDelay)y).pseudodelay;
43		if (i < j) return -1;
#	Line 63 | Line 66 | public class DelayQueueTest extends JSR1
66		}
67
68
69	+	/**
70	+	* Delayed implementation that actually delays
71	+	*/
72	+	static class NanoDelay implements Delayed {
73	+	long trigger;
74	+	NanoDelay(long i) {
75	+	trigger = System.nanoTime() + i;
76	+	}
77	+	public int compareTo(NanoDelay y) {
78	+	long i = trigger;
79	+	long j = ((NanoDelay)y).trigger;
80	+	if (i < j) return -1;
81	+	if (i > j) return 1;
82	+	return 0;
83	+	}
84	+
85	+	public int compareTo(Delayed y) {
86	+	long i = trigger;
87	+	long j = ((NanoDelay)y).trigger;
88	+	if (i < j) return -1;
89	+	if (i > j) return 1;
90	+	return 0;
91	+	}
92	+
93	+	public boolean equals(Object other) {
94	+	return ((NanoDelay)other).trigger == trigger;
95	+	}
96	+	public boolean equals(NanoDelay other) {
97	+	return ((NanoDelay)other).trigger == trigger;
98	+	}
99	+
100	+	public long getDelay(TimeUnit unit) {
101	+	long n = trigger - System.nanoTime();
102	+	return unit.convert(n, TimeUnit.NANOSECONDS);
103	+	}
104	+
105	+	public long getTriggerTime() {
106	+	return trigger;
107	+	}
108	+
109	+	public String toString() {
110	+	return String.valueOf(trigger);
111	+	}
112	+	}
113
114
115		/**
#	Line 82 | Line 129 | public class DelayQueueTest extends JSR1
129		return q;
130		}
131
132	<	public void testConstructor1(){
132	>	/**
133	>	* A new queue has unbounded capacity
134	>	*/
135	>	public void testConstructor1() {
136		assertEquals(NOCAP, new DelayQueue().remainingCapacity());
137		}
138
139	<	public void testConstructor3(){
140	<
139	>	/**
140	>	* Initializing from null Collection throws NPE
141	>	*/
142	>	public void testConstructor3() {
143		try {
144		DelayQueue q = new DelayQueue(null);
145	<	fail("Cannot make from null collection");
145	>	shouldThrow();
146		}
147		catch (NullPointerException success) {}
148		}
149
150	<	public void testConstructor4(){
150	>	/**
151	>	* Initializing from Collection of null elements throws NPE
152	>	*/
153	>	public void testConstructor4() {
154		try {
155		PDelay[] ints = new PDelay[SIZE];
156		DelayQueue q = new DelayQueue(Arrays.asList(ints));
157	<	fail("Cannot make with null elements");
157	>	shouldThrow();
158		}
159		catch (NullPointerException success) {}
160		}
161
162	<	public void testConstructor5(){
162	>	/**
163	>	* Initializing from Collection with some null elements throws NPE
164	>	*/
165	>	public void testConstructor5() {
166		try {
167		PDelay[] ints = new PDelay[SIZE];
168		for (int i = 0; i < SIZE-1; ++i)
169		ints[i] = new PDelay(i);
170		DelayQueue q = new DelayQueue(Arrays.asList(ints));
171	<	fail("Cannot make with null elements");
171	>	shouldThrow();
172		}
173		catch (NullPointerException success) {}
174		}
175
176	<	public void testConstructor6(){
176	>	/**
177	>	* Queue contains all elements of collection used to initialize
178	>	*/
179	>	public void testConstructor6() {
180		try {
181		PDelay[] ints = new PDelay[SIZE];
182		for (int i = 0; i < SIZE; ++i)
#	Line 127 | Line 188 | public class DelayQueueTest extends JSR1
188		finally {}
189		}
190
191	+	/**
192	+	* isEmpty is true before add, false after
193	+	*/
194		public void testEmpty() {
195		DelayQueue q = new DelayQueue();
196		assertTrue(q.isEmpty());
#	Line 139 | Line 203 | public class DelayQueueTest extends JSR1
203		assertTrue(q.isEmpty());
204		}
205
206	<	public void testRemainingCapacity(){
206	>	/**
207	>	* remainingCapacity does not change when elementa added or removed,
208	>	* but size does
209	>	*/
210	>	public void testRemainingCapacity() {
211		DelayQueue q = populatedQueue(SIZE);
212		for (int i = 0; i < SIZE; ++i) {
213		assertEquals(NOCAP, q.remainingCapacity());
#	Line 153 | Line 221 | public class DelayQueueTest extends JSR1
221		}
222		}
223
224	<	public void testOfferNull(){
224	>	/**
225	>	* offer(null) throws NPE
226	>	*/
227	>	public void testOfferNull() {
228		try {
229		DelayQueue q = new DelayQueue();
230		q.offer(null);
231	<	fail("should throw NPE");
231	>	shouldThrow();
232		} catch (NullPointerException success) { }
233		}
234
235	+	/**
236	+	* add(null) throws NPE
237	+	*/
238	+	public void testAddNull() {
239	+	try {
240	+	DelayQueue q = new DelayQueue();
241	+	q.add(null);
242	+	shouldThrow();
243	+	} catch (NullPointerException success) { }
244	+	}
245	+
246	+	/**
247	+	* offer non-null succeeds
248	+	*/
249		public void testOffer() {
250		DelayQueue q = new DelayQueue();
251		assertTrue(q.offer(new PDelay(0)));
252		assertTrue(q.offer(new PDelay(1)));
253		}
254
255	<	public void testAdd(){
255	>	/**
256	>	* add succeeds
257	>	*/
258	>	public void testAdd() {
259		DelayQueue q = new DelayQueue();
260		for (int i = 0; i < SIZE; ++i) {
261		assertEquals(i, q.size());
#	Line 175 | Line 263 | public class DelayQueueTest extends JSR1
263		}
264		}
265
266	<	public void testAddAll1(){
266	>	/**
267	>	* addAll(null) throws NPE
268	>	*/
269	>	public void testAddAll1() {
270		try {
271		DelayQueue q = new DelayQueue();
272		q.addAll(null);
273	<	fail("Cannot add null collection");
273	>	shouldThrow();
274		}
275		catch (NullPointerException success) {}
276		}
277	<	public void testAddAll2(){
277	>
278	>
279	>	/**
280	>	* addAll(this) throws IAE
281	>	*/
282	>	public void testAddAllSelf() {
283	>	try {
284	>	DelayQueue q = populatedQueue(SIZE);
285	>	q.addAll(q);
286	>	shouldThrow();
287	>	}
288	>	catch (IllegalArgumentException success) {}
289	>	}
290	>
291	>	/**
292	>	* addAll of a collection with null elements throws NPE
293	>	*/
294	>	public void testAddAll2() {
295		try {
296		DelayQueue q = new DelayQueue();
297		PDelay[] ints = new PDelay[SIZE];
298		q.addAll(Arrays.asList(ints));
299	<	fail("Cannot add null elements");
299	>	shouldThrow();
300		}
301		catch (NullPointerException success) {}
302		}
303	<	public void testAddAll3(){
303	>	/**
304	>	* addAll of a collection with any null elements throws NPE after
305	>	* possibly adding some elements
306	>	*/
307	>	public void testAddAll3() {
308		try {
309		DelayQueue q = new DelayQueue();
310		PDelay[] ints = new PDelay[SIZE];
311		for (int i = 0; i < SIZE-1; ++i)
312		ints[i] = new PDelay(i);
313		q.addAll(Arrays.asList(ints));
314	<	fail("Cannot add null elements");
314	>	shouldThrow();
315		}
316		catch (NullPointerException success) {}
317		}
318
319	<	public void testAddAll5(){
319	>	/**
320	>	* Queue contains all elements of successful addAll
321	>	*/
322	>	public void testAddAll5() {
323		try {
324		PDelay[] empty = new PDelay[0];
325		PDelay[] ints = new PDelay[SIZE];
#	Line 219 | Line 334 | public class DelayQueueTest extends JSR1
334		finally {}
335		}
336
337	+	/**
338	+	* put(null) throws NPE
339	+	*/
340		public void testPutNull() {
341		try {
342		DelayQueue q = new DelayQueue();
343		q.put(null);
344	<	fail("put should throw NPE");
344	>	shouldThrow();
345		}
346		catch (NullPointerException success){
347		}
348		}
349
350	+	/**
351	+	* all elements successfully put are contained
352	+	*/
353		public void testPut() {
354		try {
355		DelayQueue q = new DelayQueue();
#	Line 243 | Line 364 | public class DelayQueueTest extends JSR1
364		}
365		}
366
367	+	/**
368	+	* put doesn't block waiting for take
369	+	*/
370		public void testPutWithTake() {
371		final DelayQueue q = new DelayQueue();
372		Thread t = new Thread(new Runnable() {
373	<	public void run(){
373	>	public void run() {
374		int added = 0;
375		try {
376		q.put(new PDelay(0));
#	Line 269 | Line 393 | public class DelayQueueTest extends JSR1
393		t.interrupt();
394		t.join();
395		} catch (Exception e){
396	<	fail("Unexpected exception");
396	>	unexpectedException();
397		}
398		}
399
400	+	/**
401	+	* timed offer does not time out
402	+	*/
403		public void testTimedOffer() {
404		final DelayQueue q = new DelayQueue();
405		Thread t = new Thread(new Runnable() {
406	<	public void run(){
406	>	public void run() {
407		try {
408		q.put(new PDelay(0));
409		q.put(new PDelay(0));
#	Line 292 | Line 419 | public class DelayQueueTest extends JSR1
419		t.interrupt();
420		t.join();
421		} catch (Exception e){
422	<	fail("Unexpected exception");
422	>	unexpectedException();
423		}
424		}
425
426	<	public void testTake(){
426	>	/**
427	>	* take retrieves elements in priority order
428	>	*/
429	>	public void testTake() {
430		try {
431		DelayQueue q = populatedQueue(SIZE);
432		for (int i = 0; i < SIZE; ++i) {
433		assertEquals(new PDelay(i), ((PDelay)q.take()));
434		}
435		} catch (InterruptedException e){
436	<	fail("Unexpected exception");
436	>	unexpectedException();
437		}
438		}
439
440	+	/**
441	+	* take blocks interruptibly when empty
442	+	*/
443		public void testTakeFromEmpty() {
444		final DelayQueue q = new DelayQueue();
445		Thread t = new Thread(new Runnable() {
446	<	public void run(){
446	>	public void run() {
447		try {
448		q.take();
449	<	threadFail("Should block");
449	>	threadShouldThrow();
450		} catch (InterruptedException success){ }
451		}
452		});
#	Line 323 | Line 456 | public class DelayQueueTest extends JSR1
456		t.interrupt();
457		t.join();
458		} catch (Exception e){
459	<	fail("Unexpected exception");
459	>	unexpectedException();
460		}
461		}
462
463	<	public void testBlockingTake(){
463	>	/**
464	>	* Take removes existing elements until empty, then blocks interruptibly
465	>	*/
466	>	public void testBlockingTake() {
467		Thread t = new Thread(new Runnable() {
468		public void run() {
469		try {
#	Line 336 | Line 472 | public class DelayQueueTest extends JSR1
472		threadAssertEquals(new PDelay(i), ((PDelay)q.take()));
473		}
474		q.take();
475	<	threadFail("take should block");
475	>	threadShouldThrow();
476		} catch (InterruptedException success){
477		}
478		}});
#	Line 347 | Line 483 | public class DelayQueueTest extends JSR1
483		t.join();
484		}
485		catch (InterruptedException ie) {
486	<	fail("Unexpected exception");
486	>	unexpectedException();
487		}
488		}
489
490
491	<	public void testPoll(){
491	>	/**
492	>	* poll succeeds unless empty
493	>	*/
494	>	public void testPoll() {
495		DelayQueue q = populatedQueue(SIZE);
496		for (int i = 0; i < SIZE; ++i) {
497		assertEquals(new PDelay(i), ((PDelay)q.poll()));
#	Line 360 | Line 499 | public class DelayQueueTest extends JSR1
499		assertNull(q.poll());
500		}
501
502	+	/**
503	+	* timed pool with zero timeout succeeds when non-empty, else times out
504	+	*/
505		public void testTimedPoll0() {
506		try {
507		DelayQueue q = populatedQueue(SIZE);
#	Line 368 | Line 510 | public class DelayQueueTest extends JSR1
510		}
511		assertNull(q.poll(0, TimeUnit.MILLISECONDS));
512		} catch (InterruptedException e){
513	<	fail("Unexpected exception");
513	>	unexpectedException();
514		}
515		}
516
517	+	/**
518	+	* timed pool with nonzero timeout succeeds when non-empty, else times out
519	+	*/
520		public void testTimedPoll() {
521		try {
522		DelayQueue q = populatedQueue(SIZE);
#	Line 380 | Line 525 | public class DelayQueueTest extends JSR1
525		}
526		assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
527		} catch (InterruptedException e){
528	<	fail("Unexpected exception");
528	>	unexpectedException();
529		}
530		}
531
532	<	public void testInterruptedTimedPoll(){
532	>	/**
533	>	* Interrupted timed poll throws InterruptedException instead of
534	>	* returning timeout status
535	>	*/
536	>	public void testInterruptedTimedPoll() {
537		Thread t = new Thread(new Runnable() {
538		public void run() {
539		try {
#	Line 403 | Line 552 | public class DelayQueueTest extends JSR1
552		t.join();
553		}
554		catch (InterruptedException ie) {
555	<	fail("Unexpected exception");
555	>	unexpectedException();
556		}
557		}
558
559	<	public void testTimedPollWithOffer(){
559	>	/**
560	>	*  timed poll before a delayed offer fails; after offer succeeds;
561	>	*  on interruption throws
562	>	*/
563	>	public void testTimedPollWithOffer() {
564		final DelayQueue q = new DelayQueue();
565		Thread t = new Thread(new Runnable() {
566	<	public void run(){
566	>	public void run() {
567		try {
568		threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
569		q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
#	Line 426 | Line 579 | public class DelayQueueTest extends JSR1
579		t.interrupt();
580		t.join();
581		} catch (Exception e){
582	<	fail("Unexpected exception");
582	>	unexpectedException();
583		}
584		}
585
586
587	<	public void testPeek(){
587	>	/**
588	>	* peek returns next element, or null if empty
589	>	*/
590	>	public void testPeek() {
591		DelayQueue q = populatedQueue(SIZE);
592		for (int i = 0; i < SIZE; ++i) {
593		assertEquals(new PDelay(i), ((PDelay)q.peek()));
#	Line 442 | Line 598 | public class DelayQueueTest extends JSR1
598		assertNull(q.peek());
599		}
600
601	<	public void testElement(){
601	>	/**
602	>	* element returns next element, or throws NSEE if empty
603	>	*/
604	>	public void testElement() {
605		DelayQueue q = populatedQueue(SIZE);
606		for (int i = 0; i < SIZE; ++i) {
607		assertEquals(new PDelay(i), ((PDelay)q.element()));
#	Line 450 | Line 609 | public class DelayQueueTest extends JSR1
609		}
610		try {
611		q.element();
612	<	fail("no such element");
612	>	shouldThrow();
613		}
614		catch (NoSuchElementException success) {}
615		}
616
617	<	public void testRemove(){
617	>	/**
618	>	* remove removes next element, or throws NSEE if empty
619	>	*/
620	>	public void testRemove() {
621		DelayQueue q = populatedQueue(SIZE);
622		for (int i = 0; i < SIZE; ++i) {
623		assertEquals(new PDelay(i), ((PDelay)q.remove()));
624		}
625		try {
626		q.remove();
627	<	fail("remove should throw");
627	>	shouldThrow();
628		} catch (NoSuchElementException success){
629		}
630		}
631
632	<	public void testRemoveElement(){
632	>	/**
633	>	* remove(x) removes x and returns true if present
634	>	*/
635	>	public void testRemoveElement() {
636		DelayQueue q = populatedQueue(SIZE);
637		for (int i = 1; i < SIZE; i+=2) {
638		assertTrue(q.remove(new PDelay(i)));
#	Line 479 | Line 644 | public class DelayQueueTest extends JSR1
644		assertTrue(q.isEmpty());
645		}
646
647	<	public void testContains(){
647	>	/**
648	>	* contains(x) reports true when elements added but not yet removed
649	>	*/
650	>	public void testContains() {
651		DelayQueue q = populatedQueue(SIZE);
652		for (int i = 0; i < SIZE; ++i) {
653		assertTrue(q.contains(new PDelay(i)));
#	Line 488 | Line 656 | public class DelayQueueTest extends JSR1
656		}
657		}
658
659	<	public void testClear(){
659	>	/**
660	>	* clear removes all elements
661	>	*/
662	>	public void testClear() {
663		DelayQueue q = populatedQueue(SIZE);
664		q.clear();
665		assertTrue(q.isEmpty());
#	Line 500 | Line 671 | public class DelayQueueTest extends JSR1
671		assertTrue(q.isEmpty());
672		}
673
674	<	public void testContainsAll(){
674	>	/**
675	>	* containsAll(c) is true when c contains a subset of elements
676	>	*/
677	>	public void testContainsAll() {
678		DelayQueue q = populatedQueue(SIZE);
679		DelayQueue p = new DelayQueue();
680		for (int i = 0; i < SIZE; ++i) {
#	Line 511 | Line 685 | public class DelayQueueTest extends JSR1
685		assertTrue(p.containsAll(q));
686		}
687
688	<	public void testRetainAll(){
688	>	/**
689	>	* retainAll(c) retains only those elements of c and reports true if changed
690	>	*/
691	>	public void testRetainAll() {
692		DelayQueue q = populatedQueue(SIZE);
693		DelayQueue p = populatedQueue(SIZE);
694		for (int i = 0; i < SIZE; ++i) {
#	Line 527 | Line 704 | public class DelayQueueTest extends JSR1
704		}
705		}
706
707	<	public void testRemoveAll(){
707	>	/**
708	>	* removeAll(c) removes only those elements of c and reports true if changed
709	>	*/
710	>	public void testRemoveAll() {
711		for (int i = 1; i < SIZE; ++i) {
712		DelayQueue q = populatedQueue(SIZE);
713		DelayQueue p = populatedQueue(i);
#	Line 540 | Line 720 | public class DelayQueueTest extends JSR1
720		}
721		}
722
723	<	public void testToArray(){
723	>	/**
724	>	* toArray contains all elements
725	>	*/
726	>	public void testToArray() {
727		DelayQueue q = populatedQueue(SIZE);
728		Object[] o = q.toArray();
729		Arrays.sort(o);
#	Line 548 | Line 731 | public class DelayQueueTest extends JSR1
731		for(int i = 0; i < o.length; i++)
732		assertEquals(o[i], q.take());
733		} catch (InterruptedException e){
734	<	fail("Unexpected exception");
734	>	unexpectedException();
735		}
736		}
737
738	<	public void testToArray2(){
738	>	/**
739	>	* toArray(a) contains all elements
740	>	*/
741	>	public void testToArray2() {
742		DelayQueue q = populatedQueue(SIZE);
743		PDelay[] ints = new PDelay[SIZE];
744		ints = (PDelay[])q.toArray(ints);
#	Line 561 | Line 747 | public class DelayQueueTest extends JSR1
747		for(int i = 0; i < ints.length; i++)
748		assertEquals(ints[i], q.take());
749		} catch (InterruptedException e){
750	<	fail("Unexpected exception");
750	>	unexpectedException();
751		}
752		}
753	+
754	+
755	+	/**
756	+	* toArray(null) throws NPE
757	+	*/
758	+	public void testToArray_BadArg() {
759	+	try {
760	+	DelayQueue q = populatedQueue(SIZE);
761	+	Object o[] = q.toArray(null);
762	+	shouldThrow();
763	+	} catch(NullPointerException success){}
764	+	}
765	+
766	+	/**
767	+	* toArray with incompatible array type throws CCE
768	+	*/
769	+	public void testToArray1_BadArg() {
770	+	try {
771	+	DelayQueue q = populatedQueue(SIZE);
772	+	Object o[] = q.toArray(new String[10] );
773	+	shouldThrow();
774	+	} catch(ArrayStoreException  success){}
775	+	}
776
777	<	public void testIterator(){
777	>	/**
778	>	* iterator iterates through all elements
779	>	*/
780	>	public void testIterator() {
781		DelayQueue q = populatedQueue(SIZE);
782		int i = 0;
783		Iterator it = q.iterator();
#	Line 576 | Line 788 | public class DelayQueueTest extends JSR1
788		assertEquals(i, SIZE);
789		}
790
791	+	/**
792	+	* iterator.remove removes current element
793	+	*/
794		public void testIteratorRemove () {
580	–
795		final DelayQueue q = new DelayQueue();
582	–
796		q.add(new PDelay(2));
797		q.add(new PDelay(1));
798		q.add(new PDelay(3));
586	–
799		Iterator it = q.iterator();
800		it.next();
801		it.remove();
590	–
802		it = q.iterator();
803		assertEquals(it.next(), new PDelay(2));
804		assertEquals(it.next(), new PDelay(3));
#	Line 595 | Line 806 | public class DelayQueueTest extends JSR1
806		}
807
808
809	<	public void testToString(){
809	>	/**
810	>	* toString contains toStrings of elements
811	>	*/
812	>	public void testToString() {
813		DelayQueue q = populatedQueue(SIZE);
814		String s = q.toString();
815		for (int i = 0; i < SIZE; ++i) {
#	Line 603 | Line 817 | public class DelayQueueTest extends JSR1
817		}
818		}
819
820	+	/**
821	+	* offer transfers elements across Executor tasks
822	+	*/
823		public void testPollInExecutor() {
607	–
824		final DelayQueue q = new DelayQueue();
609	–
825		ExecutorService executor = Executors.newFixedThreadPool(2);
611	–
826		executor.execute(new Runnable() {
827		public void run() {
828		threadAssertNull(q.poll());
#	Line 617 | Line 831 | public class DelayQueueTest extends JSR1
831		threadAssertTrue(q.isEmpty());
832		}
833		catch (InterruptedException e) {
834	<	threadFail("should not be interrupted");
834	>	threadUnexpectedException();
835		}
836		}
837		});
#	Line 629 | Line 843 | public class DelayQueueTest extends JSR1
843		q.put(new PDelay(1));
844		}
845		catch (InterruptedException e) {
846	<	threadFail("should not be interrupted");
846	>	threadUnexpectedException();
847		}
848		}
849		});
636	–
850		joinPool(executor);
851
852		}
853
641	–	static class NanoDelay implements Delayed {
642	–	long trigger;
643	–	NanoDelay(long i) {
644	–	trigger = System.nanoTime() + i;
645	–	}
646	–	public int compareTo(Object y) {
647	–	long i = trigger;
648	–	long j = ((NanoDelay)y).trigger;
649	–	if (i < j) return -1;
650	–	if (i > j) return 1;
651	–	return 0;
652	–	}
653	–
654	–	public int compareTo(NanoDelay y) {
655	–	long i = trigger;
656	–	long j = ((NanoDelay)y).trigger;
657	–	if (i < j) return -1;
658	–	if (i > j) return 1;
659	–	return 0;
660	–	}
661	–
662	–	public boolean equals(Object other) {
663	–	return ((NanoDelay)other).trigger == trigger;
664	–	}
665	–	public boolean equals(NanoDelay other) {
666	–	return ((NanoDelay)other).trigger == trigger;
667	–	}
668	–
669	–	public long getDelay(TimeUnit unit) {
670	–	long n = trigger - System.nanoTime();
671	–	return unit.convert(n, TimeUnit.NANOSECONDS);
672	–	}
673	–
674	–	public long getTriggerTime() {
675	–	return trigger;
676	–	}
677	–
678	–	public String toString() {
679	–	return String.valueOf(trigger);
680	–	}
681	–	}
854
855	+	/**
856	+	* Delayed actions do not occur until their delay elapses
857	+	*/
858		public void testDelay() {
859		DelayQueue q = new DelayQueue();
860		NanoDelay[] elements = new NanoDelay[SIZE];
#	Line 702 | Line 877 | public class DelayQueueTest extends JSR1
877		}
878		}
879		catch(InterruptedException ie) {
880	<	fail("Unexpected Exception");
880	>	unexpectedException();
881	>	}
882	>	}
883	>
884	>
885	>	/**
886	>	* drainTo(null) throws NPE
887	>	*/
888	>	public void testDrainToNull() {
889	>	DelayQueue q = populatedQueue(SIZE);
890	>	try {
891	>	q.drainTo(null);
892	>	shouldThrow();
893	>	} catch(NullPointerException success) {
894	>	}
895	>	}
896	>
897	>	/**
898	>	* drainTo(this) throws IAE
899	>	*/
900	>	public void testDrainToSelf() {
901	>	DelayQueue q = populatedQueue(SIZE);
902	>	try {
903	>	q.drainTo(q);
904	>	shouldThrow();
905	>	} catch(IllegalArgumentException success) {
906		}
907		}
908
909	+	/**
910	+	* drainTo(c) empties queue into another collection c
911	+	*/
912	+	public void testDrainTo() {
913	+	DelayQueue q = populatedQueue(SIZE);
914	+	ArrayList l = new ArrayList();
915	+	q.drainTo(l);
916	+	assertEquals(q.size(), 0);
917	+	assertEquals(l.size(), SIZE);
918	+	}
919	+
920	+	/**
921	+	* drainTo empties queue
922	+	*/
923	+	public void testDrainToWithActivePut() {
924	+	final DelayQueue q = populatedQueue(SIZE);
925	+	Thread t = new Thread(new Runnable() {
926	+	public void run() {
927	+	q.put(new PDelay(SIZE+1));
928	+	}
929	+	});
930	+	try {
931	+	t.start();
932	+	ArrayList l = new ArrayList();
933	+	q.drainTo(l);
934	+	assertTrue(l.size() >= SIZE);
935	+	t.join();
936	+	assertTrue(q.size() + l.size() >= SIZE);
937	+	} catch(Exception e){
938	+	unexpectedException();
939	+	}
940	+	}
941	+
942	+	/**
943	+	* drainTo(null, n) throws NPE
944	+	*/
945	+	public void testDrainToNullN() {
946	+	DelayQueue q = populatedQueue(SIZE);
947	+	try {
948	+	q.drainTo(null, 0);
949	+	shouldThrow();
950	+	} catch(NullPointerException success) {
951	+	}
952	+	}
953	+
954	+	/**
955	+	* drainTo(this, n) throws IAE
956	+	*/
957	+	public void testDrainToSelfN() {
958	+	DelayQueue q = populatedQueue(SIZE);
959	+	try {
960	+	q.drainTo(q, 0);
961	+	shouldThrow();
962	+	} catch(IllegalArgumentException success) {
963	+	}
964	+	}
965	+
966	+	/**
967	+	* drainTo(c, n) empties first max {n, size} elements of queue into c
968	+	*/
969	+	public void testDrainToN() {
970	+	for (int i = 0; i < SIZE + 2; ++i) {
971	+	DelayQueue q = populatedQueue(SIZE);
972	+	ArrayList l = new ArrayList();
973	+	q.drainTo(l, i);
974	+	int k = (i < SIZE)? i : SIZE;
975	+	assertEquals(q.size(), SIZE-k);
976	+	assertEquals(l.size(), k);
977	+	}
978	+	}
979	+
980	+
981		}

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