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

Comparing jsr166/src/test/tck/DelayQueueTest.java (file contents):
Revision 1.36 by jsr166, Mon Oct 11 04:19:16 2010 UTC vs.
Revision 1.54 by jsr166, Tue May 31 16:16:23 2011 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
8
9		import junit.framework.*;
10	<	import java.util.*;
10	>	import java.util.Arrays;
11	>	import java.util.ArrayList;
12	>	import java.util.Iterator;
13	>	import java.util.NoSuchElementException;
14	>	import java.util.concurrent.BlockingQueue;
15	>	import java.util.concurrent.CountDownLatch;
16	>	import java.util.concurrent.Delayed;
17	>	import java.util.concurrent.DelayQueue;
18	>	import java.util.concurrent.Executors;
19	>	import java.util.concurrent.ExecutorService;
20	>	import java.util.concurrent.TimeUnit;
21		import static java.util.concurrent.TimeUnit.MILLISECONDS;
12	–	import java.util.concurrent.*;
22
23		public class DelayQueueTest extends JSR166TestCase {
24	+
25	+	public static class Generic extends BlockingQueueTest {
26	+	protected BlockingQueue emptyCollection() {
27	+	return new DelayQueue();
28	+	}
29	+	protected PDelay makeElement(int i) {
30	+	return new PDelay(i);
31	+	}
32	+	}
33	+
34		public static void main(String[] args) {
35		junit.textui.TestRunner.run(suite());
36		}
37
38		public static Test suite() {
39	<	return new TestSuite(DelayQueueTest.class);
39	>	return newTestSuite(DelayQueueTest.class,
40	>	new Generic().testSuite());
41		}
42
43		private static final int NOCAP = Integer.MAX_VALUE;
#	Line 49 | Line 69 | public class DelayQueueTest extends JSR1
69		return other.pseudodelay == pseudodelay;
70		}
71
52	–
72		public long getDelay(TimeUnit ignore) {
73		return pseudodelay;
74		}
#	Line 62 | Line 81 | public class DelayQueueTest extends JSR1
81		}
82		}
83
65	–
84		/**
85		* Delayed implementation that actually delays
86		*/
#	Line 104 | Line 122 | public class DelayQueueTest extends JSR1
122		}
123		}
124
107	–
125		/**
126		* Create a queue of given size containing consecutive
127		* PDelays 0 ... n.
128		*/
129	<	private DelayQueue populatedQueue(int n) {
130	<	DelayQueue q = new DelayQueue();
129	>	private DelayQueue<PDelay> populatedQueue(int n) {
130	>	DelayQueue<PDelay> q = new DelayQueue<PDelay>();
131		assertTrue(q.isEmpty());
132		for (int i = n-1; i >= 0; i-=2)
133		assertTrue(q.offer(new PDelay(i)));
#	Line 209 | Line 226 | public class DelayQueueTest extends JSR1
226		}
227
228		/**
212	–	* offer(null) throws NPE
213	–	*/
214	–	public void testOfferNull() {
215	–	try {
216	–	DelayQueue q = new DelayQueue();
217	–	q.offer(null);
218	–	shouldThrow();
219	–	} catch (NullPointerException success) {}
220	–	}
221	–
222	–	/**
223	–	* add(null) throws NPE
224	–	*/
225	–	public void testAddNull() {
226	–	try {
227	–	DelayQueue q = new DelayQueue();
228	–	q.add(null);
229	–	shouldThrow();
230	–	} catch (NullPointerException success) {}
231	–	}
232	–
233	–	/**
229		* offer non-null succeeds
230		*/
231		public void testOffer() {
#	Line 251 | Line 246 | public class DelayQueueTest extends JSR1
246		}
247
248		/**
254	–	* addAll(null) throws NPE
255	–	*/
256	–	public void testAddAll1() {
257	–	try {
258	–	DelayQueue q = new DelayQueue();
259	–	q.addAll(null);
260	–	shouldThrow();
261	–	} catch (NullPointerException success) {}
262	–	}
263	–
264	–
265	–	/**
249		* addAll(this) throws IAE
250		*/
251		public void testAddAllSelf() {
#	Line 274 | Line 257 | public class DelayQueueTest extends JSR1
257		}
258
259		/**
277	–	* addAll of a collection with null elements throws NPE
278	–	*/
279	–	public void testAddAll2() {
280	–	try {
281	–	DelayQueue q = new DelayQueue();
282	–	PDelay[] ints = new PDelay[SIZE];
283	–	q.addAll(Arrays.asList(ints));
284	–	shouldThrow();
285	–	} catch (NullPointerException success) {}
286	–	}
287	–
288	–	/**
260		* addAll of a collection with any null elements throws NPE after
261		* possibly adding some elements
262		*/
#	Line 316 | Line 287 | public class DelayQueueTest extends JSR1
287		}
288
289		/**
319	–	* put(null) throws NPE
320	–	*/
321	–	public void testPutNull() {
322	–	try {
323	–	DelayQueue q = new DelayQueue();
324	–	q.put(null);
325	–	shouldThrow();
326	–	} catch (NullPointerException success) {}
327	–	}
328	–
329	–	/**
290		* all elements successfully put are contained
291		*/
292	<	public void testPut() {
293	<	DelayQueue q = new DelayQueue();
294	<	for (int i = 0; i < SIZE; ++i) {
295	<	PDelay I = new PDelay(i);
296	<	q.put(I);
297	<	assertTrue(q.contains(I));
298	<	}
299	<	assertEquals(SIZE, q.size());
292	>	public void testPut() {
293	>	DelayQueue q = new DelayQueue();
294	>	for (int i = 0; i < SIZE; ++i) {
295	>	PDelay I = new PDelay(i);
296	>	q.put(I);
297	>	assertTrue(q.contains(I));
298	>	}
299	>	assertEquals(SIZE, q.size());
300		}
301
302		/**
#	Line 344 | Line 304 | public class DelayQueueTest extends JSR1
304		*/
305		public void testPutWithTake() throws InterruptedException {
306		final DelayQueue q = new DelayQueue();
307	<	Thread t = new Thread(new CheckedRunnable() {
307	>	Thread t = newStartedThread(new CheckedRunnable() {
308		public void realRun() {
309		q.put(new PDelay(0));
310		q.put(new PDelay(0));
#	Line 352 | Line 312 | public class DelayQueueTest extends JSR1
312		q.put(new PDelay(0));
313		}});
314
315	<	t.start();
316	<	Thread.sleep(SHORT_DELAY_MS);
357	<	q.take();
358	<	t.interrupt();
359	<	t.join();
315	>	awaitTermination(t);
316	>	assertEquals(4, q.size());
317		}
318
319		/**
#	Line 364 | Line 321 | public class DelayQueueTest extends JSR1
321		*/
322		public void testTimedOffer() throws InterruptedException {
323		final DelayQueue q = new DelayQueue();
324	<	Thread t = new Thread(new CheckedRunnable() {
324	>	Thread t = newStartedThread(new CheckedRunnable() {
325		public void realRun() throws InterruptedException {
326		q.put(new PDelay(0));
327		q.put(new PDelay(0));
#	Line 372 | Line 329 | public class DelayQueueTest extends JSR1
329		assertTrue(q.offer(new PDelay(0), LONG_DELAY_MS, MILLISECONDS));
330		}});
331
332	<	t.start();
376	<	Thread.sleep(SMALL_DELAY_MS);
377	<	t.interrupt();
378	<	t.join();
332	>	awaitTermination(t);
333		}
334
335		/**
#	Line 389 | Line 343 | public class DelayQueueTest extends JSR1
343		}
344
345		/**
392	–	* take blocks interruptibly when empty
393	–	*/
394	–	public void testTakeFromEmpty() throws InterruptedException {
395	–	final DelayQueue q = new DelayQueue();
396	–	Thread t = new ThreadShouldThrow(InterruptedException.class) {
397	–	public void realRun() throws InterruptedException {
398	–	q.take();
399	–	}};
400	–
401	–	t.start();
402	–	Thread.sleep(SHORT_DELAY_MS);
403	–	t.interrupt();
404	–	t.join();
405	–	}
406	–
407	–	/**
346		* Take removes existing elements until empty, then blocks interruptibly
347		*/
348		public void testBlockingTake() throws InterruptedException {
349		final DelayQueue q = populatedQueue(SIZE);
350	<	Thread t = new Thread(new CheckedRunnable() {
350	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
351	>	Thread t = newStartedThread(new CheckedRunnable() {
352		public void realRun() throws InterruptedException {
353		for (int i = 0; i < SIZE; ++i) {
354		assertEquals(new PDelay(i), ((PDelay)q.take()));
355		}
356	+
357	+	Thread.currentThread().interrupt();
358		try {
359		q.take();
360		shouldThrow();
361		} catch (InterruptedException success) {}
362	+	assertFalse(Thread.interrupted());
363	+
364	+	pleaseInterrupt.countDown();
365	+	try {
366	+	q.take();
367	+	shouldThrow();
368	+	} catch (InterruptedException success) {}
369	+	assertFalse(Thread.interrupted());
370		}});
371
372	<	t.start();
373	<	Thread.sleep(SHORT_DELAY_MS);
372	>	await(pleaseInterrupt);
373	>	assertThreadStaysAlive(t);
374		t.interrupt();
375	<	t.join();
375	>	awaitTermination(t);
376		}
377
429	–
378		/**
379		* poll succeeds unless empty
380		*/
#	Line 439 | Line 387 | public class DelayQueueTest extends JSR1
387		}
388
389		/**
390	<	* timed pool with zero timeout succeeds when non-empty, else times out
390	>	* timed poll with zero timeout succeeds when non-empty, else times out
391		*/
392		public void testTimedPoll0() throws InterruptedException {
393		DelayQueue q = populatedQueue(SIZE);
#	Line 450 | Line 398 | public class DelayQueueTest extends JSR1
398		}
399
400		/**
401	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
401	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
402		*/
403		public void testTimedPoll() throws InterruptedException {
404		DelayQueue q = populatedQueue(SIZE);
405		for (int i = 0; i < SIZE; ++i) {
406	<	assertEquals(new PDelay(i), ((PDelay)q.poll(SHORT_DELAY_MS, MILLISECONDS)));
407	<	}
408	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
406	>	long startTime = System.nanoTime();
407	>	assertEquals(new PDelay(i), ((PDelay)q.poll(LONG_DELAY_MS, MILLISECONDS)));
408	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
409	>	}
410	>	long startTime = System.nanoTime();
411	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
412	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
413	>	checkEmpty(q);
414		}
415
416		/**
#	Line 465 | Line 418 | public class DelayQueueTest extends JSR1
418		* returning timeout status
419		*/
420		public void testInterruptedTimedPoll() throws InterruptedException {
421	<	Thread t = new Thread(new CheckedRunnable() {
421	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
422	>	Thread t = newStartedThread(new CheckedRunnable() {
423		public void realRun() throws InterruptedException {
424		DelayQueue q = populatedQueue(SIZE);
425		for (int i = 0; i < SIZE; ++i) {
426		assertEquals(new PDelay(i), ((PDelay)q.poll(SHORT_DELAY_MS, MILLISECONDS)));
427		}
474	–	try {
475	–	q.poll(SMALL_DELAY_MS, MILLISECONDS);
476	–	shouldThrow();
477	–	} catch (InterruptedException success) {}
478	–	}});
479	–
480	–	t.start();
481	–	Thread.sleep(SHORT_DELAY_MS);
482	–	t.interrupt();
483	–	t.join();
484	–	}
485	–
486	–	/**
487	–	* timed poll before a delayed offer fails; after offer succeeds;
488	–	* on interruption throws
489	–	*/
490	–	public void testTimedPollWithOffer() throws InterruptedException {
491	–	final DelayQueue q = new DelayQueue();
492	–	final PDelay pdelay = new PDelay(0);
493	–	final CheckedBarrier barrier = new CheckedBarrier(2);
494	–	Thread t = new Thread(new CheckedRunnable() {
495	–	public void realRun() throws InterruptedException {
496	–	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
497	–
498	–	barrier.await();
499	–	assertSame(pdelay, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
428
429		Thread.currentThread().interrupt();
430		try {
431	<	q.poll(SHORT_DELAY_MS, MILLISECONDS);
431	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
432		shouldThrow();
433		} catch (InterruptedException success) {}
434	+	assertFalse(Thread.interrupted());
435
436	<	barrier.await();
436	>	pleaseInterrupt.countDown();
437		try {
438	<	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
438	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
439		shouldThrow();
440		} catch (InterruptedException success) {}
441	+	assertFalse(Thread.interrupted());
442		}});
443
444	<	t.start();
445	<	barrier.await();
516	<	assertTrue(q.offer(pdelay, SHORT_DELAY_MS, MILLISECONDS));
517	<	barrier.await();
518	<	sleep(SHORT_DELAY_MS);
444	>	await(pleaseInterrupt);
445	>	assertThreadStaysAlive(t);
446		t.interrupt();
447	<	t.join();
447	>	awaitTermination(t);
448		}
449
523	–
450		/**
451		* peek returns next element, or null if empty
452		*/
#	Line 667 | Line 593 | public class DelayQueueTest extends JSR1
593		Object[] o = q.toArray();
594		Arrays.sort(o);
595		for (int i = 0; i < o.length; i++)
596	<	assertEquals(o[i], q.take());
596	>	assertSame(o[i], q.take());
597		}
598
599		/**
600		* toArray(a) contains all elements
601		*/
602	<	public void testToArray2() throws InterruptedException {
603	<	DelayQueue q = populatedQueue(SIZE);
602	>	public void testToArray2() {
603	>	DelayQueue<PDelay> q = populatedQueue(SIZE);
604		PDelay[] ints = new PDelay[SIZE];
605	<	ints = (PDelay[])q.toArray(ints);
605	>	PDelay[] array = q.toArray(ints);
606	>	assertSame(ints, array);
607		Arrays.sort(ints);
608		for (int i = 0; i < ints.length; i++)
609	<	assertEquals(ints[i], q.take());
609	>	assertSame(ints[i], q.remove());
610		}
611
685	–
612		/**
613	<	* toArray(null) throws NPE
688	<	*/
689	<	public void testToArray_BadArg() {
690	<	DelayQueue q = populatedQueue(SIZE);
691	<	try {
692	<	Object o[] = q.toArray(null);
693	<	shouldThrow();
694	<	} catch (NullPointerException success) {}
695	<	}
696	<
697	<	/**
698	<	* toArray with incompatible array type throws CCE
613	>	* toArray(incompatible array type) throws ArrayStoreException
614		*/
615		public void testToArray1_BadArg() {
616		DelayQueue q = populatedQueue(SIZE);
617		try {
618	<	Object o[] = q.toArray(new String[10]);
618	>	q.toArray(new String[10]);
619		shouldThrow();
620		} catch (ArrayStoreException success) {}
621		}
#	Line 736 | Line 651 | public class DelayQueueTest extends JSR1
651		assertFalse(it.hasNext());
652		}
653
739	–
654		/**
655		* toString contains toStrings of elements
656		*/
#	Line 744 | Line 658 | public class DelayQueueTest extends JSR1
658		DelayQueue q = populatedQueue(SIZE);
659		String s = q.toString();
660		for (int i = 0; i < SIZE; ++i) {
661	<	assertTrue(s.indexOf(String.valueOf(Integer.MIN_VALUE+i)) >= 0);
661	>	assertTrue(s.contains(String.valueOf(Integer.MIN_VALUE+i)));
662		}
663		}
664
665		/**
666	<	* offer transfers elements across Executor tasks
666	>	* timed poll transfers elements across Executor tasks
667		*/
668		public void testPollInExecutor() {
669		final DelayQueue q = new DelayQueue();
670	+	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
671		ExecutorService executor = Executors.newFixedThreadPool(2);
672		executor.execute(new CheckedRunnable() {
673		public void realRun() throws InterruptedException {
674		assertNull(q.poll());
675	<	assertTrue(null != q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
676	<	assertTrue(q.isEmpty());
675	>	threadsStarted.await();
676	>	assertTrue(null != q.poll(LONG_DELAY_MS, MILLISECONDS));
677	>	checkEmpty(q);
678		}});
679
680		executor.execute(new CheckedRunnable() {
681		public void realRun() throws InterruptedException {
682	<	Thread.sleep(SHORT_DELAY_MS);
682	>	threadsStarted.await();
683		q.put(new PDelay(1));
684		}});
685
686		joinPool(executor);
687		}
688
773	–
689		/**
690		* Delayed actions do not occur until their delay elapses
691		*/
692		public void testDelay() throws InterruptedException {
693	<	DelayQueue q = new DelayQueue();
694	<	NanoDelay[] elements = new NanoDelay[SIZE];
695	<	for (int i = 0; i < SIZE; ++i) {
781	<	elements[i] = new NanoDelay(1000000000L + 1000000L * (SIZE - i));
782	<	}
783	<	for (int i = 0; i < SIZE; ++i) {
784	<	q.add(elements[i]);
785	<	}
693	>	DelayQueue<NanoDelay> q = new DelayQueue<NanoDelay>();
694	>	for (int i = 0; i < SIZE; ++i)
695	>	q.add(new NanoDelay(1000000L * (SIZE - i)));
696
697		long last = 0;
698		for (int i = 0; i < SIZE; ++i) {
699	<	NanoDelay e = (NanoDelay)(q.take());
699	>	NanoDelay e = q.take();
700		long tt = e.getTriggerTime();
701	<	assertTrue(tt - System.nanoTime() <= 0);
701	>	assertTrue(System.nanoTime() - tt >= 0);
702		if (i != 0)
703		assertTrue(tt >= last);
704		last = tt;
705		}
706	+	assertTrue(q.isEmpty());
707		}
708
709		/**
#	Line 804 | Line 715 | public class DelayQueueTest extends JSR1
715		assertNotNull(q.peek());
716		}
717
807	–
718		/**
719		* poll of a non-empty queue returns null if no expired elements.
720		*/
#	Line 820 | Line 730 | public class DelayQueueTest extends JSR1
730		public void testTimedPollDelayed() throws InterruptedException {
731		DelayQueue q = new DelayQueue();
732		q.add(new NanoDelay(LONG_DELAY_MS * 1000000L));
733	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
824	<	}
825	<
826	<	/**
827	<	* drainTo(null) throws NPE
828	<	*/
829	<	public void testDrainToNull() {
830	<	DelayQueue q = populatedQueue(SIZE);
831	<	try {
832	<	q.drainTo(null);
833	<	shouldThrow();
834	<	} catch (NullPointerException success) {}
835	<	}
836	<
837	<	/**
838	<	* drainTo(this) throws IAE
839	<	*/
840	<	public void testDrainToSelf() {
841	<	DelayQueue q = populatedQueue(SIZE);
842	<	try {
843	<	q.drainTo(q);
844	<	shouldThrow();
845	<	} catch (IllegalArgumentException success) {}
733	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
734		}
735
736		/**
#	Line 892 | Line 780 | public class DelayQueueTest extends JSR1
780		}
781
782		/**
783	<	* drainTo(null, n) throws NPE
896	<	*/
897	<	public void testDrainToNullN() {
898	<	DelayQueue q = populatedQueue(SIZE);
899	<	try {
900	<	q.drainTo(null, 0);
901	<	shouldThrow();
902	<	} catch (NullPointerException success) {}
903	<	}
904	<
905	<	/**
906	<	* drainTo(this, n) throws IAE
907	<	*/
908	<	public void testDrainToSelfN() {
909	<	DelayQueue q = populatedQueue(SIZE);
910	<	try {
911	<	q.drainTo(q, 0);
912	<	shouldThrow();
913	<	} catch (IllegalArgumentException success) {}
914	<	}
915	<
916	<	/**
917	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
783	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
784		*/
785		public void testDrainToN() {
786		for (int i = 0; i < SIZE + 2; ++i) {
787		DelayQueue q = populatedQueue(SIZE);
788		ArrayList l = new ArrayList();
789		q.drainTo(l, i);
790	<	int k = (i < SIZE)? i : SIZE;
790	>	int k = (i < SIZE) ? i : SIZE;
791		assertEquals(q.size(), SIZE-k);
792		assertEquals(l.size(), k);
793		}
794		}
795
930	–
796		}

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