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

Comparing jsr166/src/test/tck/DelayQueueTest.java (file contents):
Revision 1.5 by dl, Thu Sep 25 11:02:41 2003 UTC vs.
Revision 1.52 by jsr166, Sat May 28 22:40:00 2011 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/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.*;
11	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
12		import java.util.concurrent.*;
13
14		public class DelayQueueTest extends JSR166TestCase {
15		public static void main(String[] args) {
16	<	junit.textui.TestRunner.run (suite());
16	>	junit.textui.TestRunner.run(suite());
17		}
18
19		public static Test suite() {
20	<	return new TestSuite(DelayQueueTest.class);
20	>	return new TestSuite(DelayQueueTest.class);
21		}
22
23		private static final int NOCAP = Integer.MAX_VALUE;
24
25		/**
26	<	* A delayed implmentation for testing.
27	<	* Most  tests use Pseudodelays, where delays are all elapsed
26	>	* A delayed implementation for testing.
27	>	* Most tests use Pseudodelays, where delays are all elapsed
28		* (so, no blocking solely for delays) but are still ordered
29	<	*/
30	<	static class PDelay implements Delayed {
29	>	*/
30	>	static class PDelay implements Delayed {
31		int pseudodelay;
32		PDelay(int i) { pseudodelay = Integer.MIN_VALUE + i; }
33	<	public int compareTo(Object y) {
33	>	public int compareTo(PDelay y) {
34		int i = pseudodelay;
35	<	int j = ((PDelay)y).pseudodelay;
35	>	int j = y.pseudodelay;
36		if (i < j) return -1;
37		if (i > j) return 1;
38		return 0;
39		}
40
41	<	public int compareTo(PDelay y) {
42	<	int i = pseudodelay;
41	<	int j = ((PDelay)y).pseudodelay;
42	<	if (i < j) return -1;
43	<	if (i > j) return 1;
44	<	return 0;
41	>	public int compareTo(Delayed y) {
42	>	return compareTo((PDelay)y);
43		}
44
45		public boolean equals(Object other) {
46	<	return ((PDelay)other).pseudodelay == pseudodelay;
46	>	return equals((PDelay)other);
47		}
48		public boolean equals(PDelay other) {
49	<	return ((PDelay)other).pseudodelay == pseudodelay;
49	>	return other.pseudodelay == pseudodelay;
50		}
51
54	–
52		public long getDelay(TimeUnit ignore) {
53		return pseudodelay;
54		}
#	Line 64 | Line 61 | public class DelayQueueTest extends JSR1
61		}
62		}
63
67	–
64		/**
65		* Delayed implementation that actually delays
66		*/
67	<	static class NanoDelay implements Delayed {
67	>	static class NanoDelay implements Delayed {
68		long trigger;
69	<	NanoDelay(long i) {
69	>	NanoDelay(long i) {
70		trigger = System.nanoTime() + i;
71		}
72	<	public int compareTo(Object y) {
72	>	public int compareTo(NanoDelay y) {
73		long i = trigger;
74	<	long j = ((NanoDelay)y).trigger;
74	>	long j = y.trigger;
75		if (i < j) return -1;
76		if (i > j) return 1;
77		return 0;
78		}
79
80	<	public int compareTo(NanoDelay y) {
81	<	long i = trigger;
86	<	long j = ((NanoDelay)y).trigger;
87	<	if (i < j) return -1;
88	<	if (i > j) return 1;
89	<	return 0;
80	>	public int compareTo(Delayed y) {
81	>	return compareTo((NanoDelay)y);
82		}
83
84		public boolean equals(Object other) {
85	<	return ((NanoDelay)other).trigger == trigger;
85	>	return equals((NanoDelay)other);
86		}
87		public boolean equals(NanoDelay other) {
88	<	return ((NanoDelay)other).trigger == trigger;
88	>	return other.trigger == trigger;
89		}
90
91		public long getDelay(TimeUnit unit) {
#	Line 110 | Line 102 | public class DelayQueueTest extends JSR1
102		}
103		}
104
113	–
105		/**
106		* Create a queue of given size containing consecutive
107		* PDelays 0 ... n.
108		*/
109	<	private DelayQueue populatedQueue(int n) {
110	<	DelayQueue q = new DelayQueue();
109	>	private DelayQueue<PDelay> populatedQueue(int n) {
110	>	DelayQueue<PDelay> q = new DelayQueue<PDelay>();
111		assertTrue(q.isEmpty());
112	<	for(int i = n-1; i >= 0; i-=2)
113	<	assertTrue(q.offer(new PDelay(i)));
114	<	for(int i = (n & 1); i < n; i+=2)
115	<	assertTrue(q.offer(new PDelay(i)));
112	>	for (int i = n-1; i >= 0; i-=2)
113	>	assertTrue(q.offer(new PDelay(i)));
114	>	for (int i = (n & 1); i < n; i+=2)
115	>	assertTrue(q.offer(new PDelay(i)));
116		assertFalse(q.isEmpty());
117		assertEquals(NOCAP, q.remainingCapacity());
118	<	assertEquals(n, q.size());
118	>	assertEquals(n, q.size());
119		return q;
120		}
121	<
121	>
122		/**
123		* A new queue has unbounded capacity
124		*/
#	Line 142 | Line 133 | public class DelayQueueTest extends JSR1
133		try {
134		DelayQueue q = new DelayQueue(null);
135		shouldThrow();
136	<	}
146	<	catch (NullPointerException success) {}
136	>	} catch (NullPointerException success) {}
137		}
138
139		/**
#	Line 154 | Line 144 | public class DelayQueueTest extends JSR1
144		PDelay[] ints = new PDelay[SIZE];
145		DelayQueue q = new DelayQueue(Arrays.asList(ints));
146		shouldThrow();
147	<	}
158	<	catch (NullPointerException success) {}
147	>	} catch (NullPointerException success) {}
148		}
149
150		/**
#	Line 168 | Line 157 | public class DelayQueueTest extends JSR1
157		ints[i] = new PDelay(i);
158		DelayQueue q = new DelayQueue(Arrays.asList(ints));
159		shouldThrow();
160	<	}
172	<	catch (NullPointerException success) {}
160	>	} catch (NullPointerException success) {}
161		}
162
163		/**
164		* Queue contains all elements of collection used to initialize
165		*/
166		public void testConstructor6() {
167	<	try {
168	<	PDelay[] ints = new PDelay[SIZE];
169	<	for (int i = 0; i < SIZE; ++i)
170	<	ints[i] = new PDelay(i);
171	<	DelayQueue q = new DelayQueue(Arrays.asList(ints));
172	<	for (int i = 0; i < SIZE; ++i)
185	<	assertEquals(ints[i], q.poll());
186	<	}
187	<	finally {}
167	>	PDelay[] ints = new PDelay[SIZE];
168	>	for (int i = 0; i < SIZE; ++i)
169	>	ints[i] = new PDelay(i);
170	>	DelayQueue q = new DelayQueue(Arrays.asList(ints));
171	>	for (int i = 0; i < SIZE; ++i)
172	>	assertEquals(ints[i], q.poll());
173		}
174
175		/**
#	Line 203 | Line 188 | public class DelayQueueTest extends JSR1
188		}
189
190		/**
191	<	* remainingCapacity does not change when elementa added or removed,
191	>	* remainingCapacity does not change when elements added or removed,
192		* but size does
193		*/
194		public void testRemainingCapacity() {
#	Line 224 | Line 209 | public class DelayQueueTest extends JSR1
209		* offer(null) throws NPE
210		*/
211		public void testOfferNull() {
212	<	try {
212	>	try {
213		DelayQueue q = new DelayQueue();
214		q.offer(null);
215		shouldThrow();
216	<	} catch (NullPointerException success) { }
216	>	} catch (NullPointerException success) {}
217	>	}
218	>
219	>	/**
220	>	* add(null) throws NPE
221	>	*/
222	>	public void testAddNull() {
223	>	try {
224	>	DelayQueue q = new DelayQueue();
225	>	q.add(null);
226	>	shouldThrow();
227	>	} catch (NullPointerException success) {}
228		}
229
230		/**
#	Line 259 | Line 255 | public class DelayQueueTest extends JSR1
255		DelayQueue q = new DelayQueue();
256		q.addAll(null);
257		shouldThrow();
258	<	}
259	<	catch (NullPointerException success) {}
258	>	} catch (NullPointerException success) {}
259	>	}
260	>
261	>	/**
262	>	* addAll(this) throws IAE
263	>	*/
264	>	public void testAddAllSelf() {
265	>	try {
266	>	DelayQueue q = populatedQueue(SIZE);
267	>	q.addAll(q);
268	>	shouldThrow();
269	>	} catch (IllegalArgumentException success) {}
270		}
271	+
272		/**
273		* addAll of a collection with null elements throws NPE
274		*/
#	Line 271 | Line 278 | public class DelayQueueTest extends JSR1
278		PDelay[] ints = new PDelay[SIZE];
279		q.addAll(Arrays.asList(ints));
280		shouldThrow();
281	<	}
275	<	catch (NullPointerException success) {}
281	>	} catch (NullPointerException success) {}
282		}
283	+
284		/**
285		* addAll of a collection with any null elements throws NPE after
286		* possibly adding some elements
#	Line 286 | Line 293 | public class DelayQueueTest extends JSR1
293		ints[i] = new PDelay(i);
294		q.addAll(Arrays.asList(ints));
295		shouldThrow();
296	<	}
290	<	catch (NullPointerException success) {}
296	>	} catch (NullPointerException success) {}
297		}
298
299		/**
300		* Queue contains all elements of successful addAll
301		*/
302		public void testAddAll5() {
303	<	try {
304	<	PDelay[] empty = new PDelay[0];
305	<	PDelay[] ints = new PDelay[SIZE];
306	<	for (int i = SIZE-1; i >= 0; --i)
307	<	ints[i] = new PDelay(i);
308	<	DelayQueue q = new DelayQueue();
309	<	assertFalse(q.addAll(Arrays.asList(empty)));
310	<	assertTrue(q.addAll(Arrays.asList(ints)));
311	<	for (int i = 0; i < SIZE; ++i)
306	<	assertEquals(ints[i], q.poll());
307	<	}
308	<	finally {}
303	>	PDelay[] empty = new PDelay[0];
304	>	PDelay[] ints = new PDelay[SIZE];
305	>	for (int i = SIZE-1; i >= 0; --i)
306	>	ints[i] = new PDelay(i);
307	>	DelayQueue q = new DelayQueue();
308	>	assertFalse(q.addAll(Arrays.asList(empty)));
309	>	assertTrue(q.addAll(Arrays.asList(ints)));
310	>	for (int i = 0; i < SIZE; ++i)
311	>	assertEquals(ints[i], q.poll());
312		}
313
314		/**
315		* put(null) throws NPE
316		*/
317	<	public void testPutNull() {
318	<	try {
317	>	public void testPutNull() {
318	>	try {
319		DelayQueue q = new DelayQueue();
320		q.put(null);
321		shouldThrow();
322	<	}
323	<	catch (NullPointerException success){
321	<	}
322	<	}
322	>	} catch (NullPointerException success) {}
323	>	}
324
325		/**
326		* all elements successfully put are contained
327		*/
328	<	public void testPut() {
329	<	try {
330	<	DelayQueue q = new DelayQueue();
331	<	for (int i = 0; i < SIZE; ++i) {
332	<	PDelay I = new PDelay(i);
333	<	q.put(I);
333	<	assertTrue(q.contains(I));
334	<	}
335	<	assertEquals(SIZE, q.size());
336	<	}
337	<	finally {
328	>	public void testPut() {
329	>	DelayQueue q = new DelayQueue();
330	>	for (int i = 0; i < SIZE; ++i) {
331	>	PDelay I = new PDelay(i);
332	>	q.put(I);
333	>	assertTrue(q.contains(I));
334		}
335	+	assertEquals(SIZE, q.size());
336		}
337
338		/**
339		* put doesn't block waiting for take
340		*/
341	<	public void testPutWithTake() {
341	>	public void testPutWithTake() throws InterruptedException {
342		final DelayQueue q = new DelayQueue();
343	<	Thread t = new Thread(new Runnable() {
344	<	public void run() {
345	<	int added = 0;
346	<	try {
347	<	q.put(new PDelay(0));
348	<	++added;
349	<	q.put(new PDelay(0));
350	<	++added;
351	<	q.put(new PDelay(0));
352	<	++added;
356	<	q.put(new PDelay(0));
357	<	++added;
358	<	threadAssertTrue(added == 4);
359	<	} finally {
360	<	}
361	<	}
362	<	});
363	<	try {
364	<	t.start();
365	<	Thread.sleep(SHORT_DELAY_MS);
366	<	q.take();
367	<	t.interrupt();
368	<	t.join();
369	<	} catch (Exception e){
370	<	unexpectedException();
371	<	}
343	>	Thread t = newStartedThread(new CheckedRunnable() {
344	>	public void realRun() {
345	>	q.put(new PDelay(0));
346	>	q.put(new PDelay(0));
347	>	q.put(new PDelay(0));
348	>	q.put(new PDelay(0));
349	>	}});
350	>
351	>	awaitTermination(t);
352	>	assertEquals(4, q.size());
353		}
354
355		/**
356		* timed offer does not time out
357		*/
358	<	public void testTimedOffer() {
358	>	public void testTimedOffer() throws InterruptedException {
359		final DelayQueue q = new DelayQueue();
360	<	Thread t = new Thread(new Runnable() {
361	<	public void run() {
362	<	try {
363	<	q.put(new PDelay(0));
364	<	q.put(new PDelay(0));
365	<	threadAssertTrue(q.offer(new PDelay(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
366	<	threadAssertTrue(q.offer(new PDelay(0), LONG_DELAY_MS, TimeUnit.MILLISECONDS));
367	<	} finally { }
368	<	}
388	<	});
389	<
390	<	try {
391	<	t.start();
392	<	Thread.sleep(SMALL_DELAY_MS);
393	<	t.interrupt();
394	<	t.join();
395	<	} catch (Exception e){
396	<	unexpectedException();
397	<	}
360	>	Thread t = newStartedThread(new CheckedRunnable() {
361	>	public void realRun() throws InterruptedException {
362	>	q.put(new PDelay(0));
363	>	q.put(new PDelay(0));
364	>	assertTrue(q.offer(new PDelay(0), SHORT_DELAY_MS, MILLISECONDS));
365	>	assertTrue(q.offer(new PDelay(0), LONG_DELAY_MS, MILLISECONDS));
366	>	}});
367	>
368	>	awaitTermination(t);
369		}
370
371		/**
372		* take retrieves elements in priority order
373		*/
374	<	public void testTake() {
375	<	try {
376	<	DelayQueue q = populatedQueue(SIZE);
377	<	for (int i = 0; i < SIZE; ++i) {
378	<	assertEquals(new PDelay(i), ((PDelay)q.take()));
408	<	}
409	<	} catch (InterruptedException e){
410	<	unexpectedException();
411	<	}
374	>	public void testTake() throws InterruptedException {
375	>	DelayQueue q = populatedQueue(SIZE);
376	>	for (int i = 0; i < SIZE; ++i) {
377	>	assertEquals(new PDelay(i), ((PDelay)q.take()));
378	>	}
379		}
380
381		/**
382		* take blocks interruptibly when empty
383		*/
384	<	public void testTakeFromEmpty() {
385	<	final DelayQueue q = new DelayQueue();
386	<	Thread t = new Thread(new Runnable() {
387	<	public void run() {
388	<	try {
389	<	q.take();
390	<	threadShouldThrow();
391	<	} catch (InterruptedException success){ }
392	<	}
393	<	});
394	<	try {
395	<	t.start();
396	<	Thread.sleep(SHORT_DELAY_MS);
397	<	t.interrupt();
398	<	t.join();
399	<	} catch (Exception e){
400	<	unexpectedException();
401	<	}
384	>	public void testTakeFromEmptyBlocksInterruptibly()
385	>	throws InterruptedException {
386	>	final BlockingQueue q = new DelayQueue();
387	>	final CountDownLatch threadStarted = new CountDownLatch(1);
388	>	Thread t = newStartedThread(new CheckedRunnable() {
389	>	public void realRun() {
390	>	threadStarted.countDown();
391	>	try {
392	>	q.take();
393	>	shouldThrow();
394	>	} catch (InterruptedException success) {}
395	>	assertFalse(Thread.interrupted());
396	>	}});
397	>
398	>	await(threadStarted);
399	>	assertThreadStaysAlive(t);
400	>	t.interrupt();
401	>	awaitTermination(t);
402		}
403
404		/**
405		* Take removes existing elements until empty, then blocks interruptibly
406		*/
407	<	public void testBlockingTake() {
408	<	Thread t = new Thread(new Runnable() {
409	<	public void run() {
410	<	try {
411	<	DelayQueue q = populatedQueue(SIZE);
412	<	for (int i = 0; i < SIZE; ++i) {
413	<	threadAssertEquals(new PDelay(i), ((PDelay)q.take()));
414	<	}
448	<	q.take();
449	<	threadShouldThrow();
450	<	} catch (InterruptedException success){
451	<	}
452	<	}});
453	<	t.start();
454	<	try {
455	<	Thread.sleep(SHORT_DELAY_MS);
456	<	t.interrupt();
457	<	t.join();
458	<	}
459	<	catch (InterruptedException ie) {
460	<	unexpectedException();
461	<	}
462	<	}
407	>	public void testBlockingTake() throws InterruptedException {
408	>	final DelayQueue q = populatedQueue(SIZE);
409	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
410	>	Thread t = newStartedThread(new CheckedRunnable() {
411	>	public void realRun() throws InterruptedException {
412	>	for (int i = 0; i < SIZE; ++i) {
413	>	assertEquals(new PDelay(i), ((PDelay)q.take()));
414	>	}
415
416	+	Thread.currentThread().interrupt();
417	+	try {
418	+	q.take();
419	+	shouldThrow();
420	+	} catch (InterruptedException success) {}
421	+	assertFalse(Thread.interrupted());
422	+
423	+	pleaseInterrupt.countDown();
424	+	try {
425	+	q.take();
426	+	shouldThrow();
427	+	} catch (InterruptedException success) {}
428	+	assertFalse(Thread.interrupted());
429	+	}});
430	+
431	+	await(pleaseInterrupt);
432	+	assertThreadStaysAlive(t);
433	+	t.interrupt();
434	+	awaitTermination(t);
435	+	}
436
437		/**
438		* poll succeeds unless empty
#	Line 470 | Line 442 | public class DelayQueueTest extends JSR1
442		for (int i = 0; i < SIZE; ++i) {
443		assertEquals(new PDelay(i), ((PDelay)q.poll()));
444		}
445	<	assertNull(q.poll());
445	>	assertNull(q.poll());
446		}
447
448		/**
449	<	* timed pool with zero timeout succeeds when non-empty, else times out
449	>	* timed poll with zero timeout succeeds when non-empty, else times out
450		*/
451	<	public void testTimedPoll0() {
452	<	try {
453	<	DelayQueue q = populatedQueue(SIZE);
454	<	for (int i = 0; i < SIZE; ++i) {
455	<	assertEquals(new PDelay(i), ((PDelay)q.poll(0, TimeUnit.MILLISECONDS)));
456	<	}
485	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
486	<	} catch (InterruptedException e){
487	<	unexpectedException();
488	<	}
451	>	public void testTimedPoll0() throws InterruptedException {
452	>	DelayQueue q = populatedQueue(SIZE);
453	>	for (int i = 0; i < SIZE; ++i) {
454	>	assertEquals(new PDelay(i), ((PDelay)q.poll(0, MILLISECONDS)));
455	>	}
456	>	assertNull(q.poll(0, MILLISECONDS));
457		}
458
459		/**
460	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
460	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
461		*/
462	<	public void testTimedPoll() {
463	<	try {
464	<	DelayQueue q = populatedQueue(SIZE);
465	<	for (int i = 0; i < SIZE; ++i) {
466	<	assertEquals(new PDelay(i), ((PDelay)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)));
467	<	}
468	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
469	<	} catch (InterruptedException e){
470	<	unexpectedException();
471	<	}
462	>	public void testTimedPoll() throws InterruptedException {
463	>	DelayQueue q = populatedQueue(SIZE);
464	>	for (int i = 0; i < SIZE; ++i) {
465	>	long startTime = System.nanoTime();
466	>	assertEquals(new PDelay(i), ((PDelay)q.poll(LONG_DELAY_MS, MILLISECONDS)));
467	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
468	>	}
469	>	long startTime = System.nanoTime();
470	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
471	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
472	>	checkEmpty(q);
473		}
474
475		/**
476		* Interrupted timed poll throws InterruptedException instead of
477		* returning timeout status
478		*/
479	<	public void testInterruptedTimedPoll() {
480	<	Thread t = new Thread(new Runnable() {
481	<	public void run() {
482	<	try {
483	<	DelayQueue q = populatedQueue(SIZE);
484	<	for (int i = 0; i < SIZE; ++i) {
485	<	threadAssertEquals(new PDelay(i), ((PDelay)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)));
486	<	}
487	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
488	<	} catch (InterruptedException success){
489	<	}
490	<	}});
491	<	t.start();
492	<	try {
493	<	Thread.sleep(SHORT_DELAY_MS);
494	<	t.interrupt();
495	<	t.join();
496	<	}
497	<	catch (InterruptedException ie) {
498	<	unexpectedException();
499	<	}
479	>	public void testInterruptedTimedPoll() throws InterruptedException {
480	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
481	>	Thread t = newStartedThread(new CheckedRunnable() {
482	>	public void realRun() throws InterruptedException {
483	>	DelayQueue q = populatedQueue(SIZE);
484	>	for (int i = 0; i < SIZE; ++i) {
485	>	assertEquals(new PDelay(i), ((PDelay)q.poll(SHORT_DELAY_MS, MILLISECONDS)));
486	>	}
487	>
488	>	Thread.currentThread().interrupt();
489	>	try {
490	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
491	>	shouldThrow();
492	>	} catch (InterruptedException success) {}
493	>	assertFalse(Thread.interrupted());
494	>
495	>	pleaseInterrupt.countDown();
496	>	try {
497	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
498	>	shouldThrow();
499	>	} catch (InterruptedException success) {}
500	>	assertFalse(Thread.interrupted());
501	>	}});
502	>
503	>	await(pleaseInterrupt);
504	>	assertThreadStaysAlive(t);
505	>	t.interrupt();
506	>	awaitTermination(t);
507		}
508
509		/**
510	<	*  timed poll before a delayed offer fails; after offer succeeds;
511	<	*  on interruption throws
510	>	* timed poll before a delayed offer fails; after offer succeeds;
511	>	* on interruption throws
512		*/
513	<	public void testTimedPollWithOffer() {
513	>	public void testTimedPollWithOffer() throws InterruptedException {
514		final DelayQueue q = new DelayQueue();
515	<	Thread t = new Thread(new Runnable() {
516	<	public void run() {
517	<	try {
518	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
519	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
544	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
545	<	threadFail("Should block");
546	<	} catch (InterruptedException success) { }
547	<	}
548	<	});
549	<	try {
550	<	t.start();
551	<	Thread.sleep(SMALL_DELAY_MS);
552	<	assertTrue(q.offer(new PDelay(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
553	<	t.interrupt();
554	<	t.join();
555	<	} catch (Exception e){
556	<	unexpectedException();
557	<	}
558	<	}
515	>	final PDelay pdelay = new PDelay(0);
516	>	final CheckedBarrier barrier = new CheckedBarrier(2);
517	>	Thread t = newStartedThread(new CheckedRunnable() {
518	>	public void realRun() throws InterruptedException {
519	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
520
521	+	barrier.await();
522	+	assertSame(pdelay, q.poll(LONG_DELAY_MS, MILLISECONDS));
523	+
524	+	Thread.currentThread().interrupt();
525	+	try {
526	+	q.poll(LONG_DELAY_MS, MILLISECONDS);
527	+	shouldThrow();
528	+	} catch (InterruptedException success) {}
529	+	assertFalse(Thread.interrupted());
530	+
531	+	barrier.await();
532	+	try {
533	+	q.poll(LONG_DELAY_MS, MILLISECONDS);
534	+	shouldThrow();
535	+	} catch (InterruptedException success) {}
536	+	assertFalse(Thread.interrupted());
537	+	}});
538	+
539	+	barrier.await();
540	+	long startTime = System.nanoTime();
541	+	assertTrue(q.offer(pdelay, LONG_DELAY_MS, MILLISECONDS));
542	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
543	+
544	+	barrier.await();
545	+	assertThreadStaysAlive(t);
546	+	t.interrupt();
547	+	awaitTermination(t);
548	+	}
549
550		/**
551		* peek returns next element, or null if empty
#	Line 565 | Line 554 | public class DelayQueueTest extends JSR1
554		DelayQueue q = populatedQueue(SIZE);
555		for (int i = 0; i < SIZE; ++i) {
556		assertEquals(new PDelay(i), ((PDelay)q.peek()));
557	<	q.poll();
558	<	assertTrue(q.peek() == null ||
559	<	i != ((PDelay)q.peek()).intValue());
557	>	assertEquals(new PDelay(i), ((PDelay)q.poll()));
558	>	if (q.isEmpty())
559	>	assertNull(q.peek());
560	>	else
561	>	assertFalse(new PDelay(i).equals(q.peek()));
562		}
563	<	assertNull(q.peek());
563	>	assertNull(q.peek());
564		}
565
566		/**
#	Line 584 | Line 575 | public class DelayQueueTest extends JSR1
575		try {
576		q.element();
577		shouldThrow();
578	<	}
588	<	catch (NoSuchElementException success) {}
578	>	} catch (NoSuchElementException success) {}
579		}
580
581		/**
#	Line 599 | Line 589 | public class DelayQueueTest extends JSR1
589		try {
590		q.remove();
591		shouldThrow();
592	<	} catch (NoSuchElementException success){
603	<	}
592	>	} catch (NoSuchElementException success) {}
593		}
594
595		/**
#	Line 617 | Line 606 | public class DelayQueueTest extends JSR1
606		}
607		assertTrue(q.isEmpty());
608		}
609	<
609	>
610		/**
611		* contains(x) reports true when elements added but not yet removed
612		*/
#	Line 639 | Line 628 | public class DelayQueueTest extends JSR1
628		assertTrue(q.isEmpty());
629		assertEquals(0, q.size());
630		assertEquals(NOCAP, q.remainingCapacity());
631	<	q.add(new PDelay(1));
631	>	PDelay x = new PDelay(1);
632	>	q.add(x);
633		assertFalse(q.isEmpty());
634	+	assertTrue(q.contains(x));
635		q.clear();
636		assertTrue(q.isEmpty());
637		}
#	Line 697 | Line 688 | public class DelayQueueTest extends JSR1
688		/**
689		* toArray contains all elements
690		*/
691	<	public void testToArray() {
691	>	public void testToArray() throws InterruptedException {
692		DelayQueue q = populatedQueue(SIZE);
693	<	Object[] o = q.toArray();
693	>	Object[] o = q.toArray();
694		Arrays.sort(o);
695	<	try {
696	<	for(int i = 0; i < o.length; i++)
706	<	assertEquals(o[i], q.take());
707	<	} catch (InterruptedException e){
708	<	unexpectedException();
709	<	}
695	>	for (int i = 0; i < o.length; i++)
696	>	assertSame(o[i], q.take());
697		}
698
699		/**
700		* toArray(a) contains all elements
701		*/
702		public void testToArray2() {
703	<	DelayQueue q = populatedQueue(SIZE);
704	<	PDelay[] ints = new PDelay[SIZE];
705	<	ints = (PDelay[])q.toArray(ints);
703	>	DelayQueue<PDelay> q = populatedQueue(SIZE);
704	>	PDelay[] ints = new PDelay[SIZE];
705	>	PDelay[] array = q.toArray(ints);
706	>	assertSame(ints, array);
707		Arrays.sort(ints);
708	<	try {
709	<	for(int i = 0; i < ints.length; i++)
722	<	assertEquals(ints[i], q.take());
723	<	} catch (InterruptedException e){
724	<	unexpectedException();
725	<	}
708	>	for (int i = 0; i < ints.length; i++)
709	>	assertSame(ints[i], q.remove());
710		}
711	<
711	>
712	>	/**
713	>	* toArray(null) throws NullPointerException
714	>	*/
715	>	public void testToArray_NullArg() {
716	>	DelayQueue q = populatedQueue(SIZE);
717	>	try {
718	>	q.toArray(null);
719	>	shouldThrow();
720	>	} catch (NullPointerException success) {}
721	>	}
722	>
723	>	/**
724	>	* toArray(incompatible array type) throws ArrayStoreException
725	>	*/
726	>	public void testToArray1_BadArg() {
727	>	DelayQueue q = populatedQueue(SIZE);
728	>	try {
729	>	q.toArray(new String[10]);
730	>	shouldThrow();
731	>	} catch (ArrayStoreException success) {}
732	>	}
733	>
734		/**
735		* iterator iterates through all elements
736		*/
737		public void testIterator() {
738		DelayQueue q = populatedQueue(SIZE);
739		int i = 0;
740	<	Iterator it = q.iterator();
741	<	while(it.hasNext()) {
740	>	Iterator it = q.iterator();
741	>	while (it.hasNext()) {
742		assertTrue(q.contains(it.next()));
743		++i;
744		}
#	Line 742 | Line 748 | public class DelayQueueTest extends JSR1
748		/**
749		* iterator.remove removes current element
750		*/
751	<	public void testIteratorRemove () {
751	>	public void testIteratorRemove() {
752		final DelayQueue q = new DelayQueue();
753		q.add(new PDelay(2));
754		q.add(new PDelay(1));
#	Line 756 | Line 762 | public class DelayQueueTest extends JSR1
762		assertFalse(it.hasNext());
763		}
764
759	–
765		/**
766		* toString contains toStrings of elements
767		*/
#	Line 764 | Line 769 | public class DelayQueueTest extends JSR1
769		DelayQueue q = populatedQueue(SIZE);
770		String s = q.toString();
771		for (int i = 0; i < SIZE; ++i) {
772	<	assertTrue(s.indexOf(String.valueOf(Integer.MIN_VALUE+i)) >= 0);
772	>	assertTrue(s.contains(String.valueOf(Integer.MIN_VALUE+i)));
773		}
774	<	}
774	>	}
775
776		/**
777	<	* offer transfers elements across Executor tasks
777	>	* timed poll transfers elements across Executor tasks
778		*/
779		public void testPollInExecutor() {
780		final DelayQueue q = new DelayQueue();
781	+	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
782		ExecutorService executor = Executors.newFixedThreadPool(2);
783	<	executor.execute(new Runnable() {
784	<	public void run() {
785	<	threadAssertNull(q.poll());
786	<	try {
787	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
788	<	threadAssertTrue(q.isEmpty());
789	<	}
790	<	catch (InterruptedException e) {
791	<	threadUnexpectedException();
792	<	}
793	<	}
794	<	});
783	>	executor.execute(new CheckedRunnable() {
784	>	public void realRun() throws InterruptedException {
785	>	assertNull(q.poll());
786	>	threadsStarted.await();
787	>	assertTrue(null != q.poll(LONG_DELAY_MS, MILLISECONDS));
788	>	checkEmpty(q);
789	>	}});
790	>
791	>	executor.execute(new CheckedRunnable() {
792	>	public void realRun() throws InterruptedException {
793	>	threadsStarted.await();
794	>	q.put(new PDelay(1));
795	>	}});
796
790	–	executor.execute(new Runnable() {
791	–	public void run() {
792	–	try {
793	–	Thread.sleep(SHORT_DELAY_MS);
794	–	q.put(new PDelay(1));
795	–	}
796	–	catch (InterruptedException e) {
797	–	threadUnexpectedException();
798	–	}
799	–	}
800	–	});
797		joinPool(executor);
798	+	}
799	+
800	+	/**
801	+	* Delayed actions do not occur until their delay elapses
802	+	*/
803	+	public void testDelay() throws InterruptedException {
804	+	DelayQueue<NanoDelay> q = new DelayQueue<NanoDelay>();
805	+	for (int i = 0; i < SIZE; ++i)
806	+	q.add(new NanoDelay(1000000L * (SIZE - i)));
807	+
808	+	long last = 0;
809	+	for (int i = 0; i < SIZE; ++i) {
810	+	NanoDelay e = q.take();
811	+	long tt = e.getTriggerTime();
812	+	assertTrue(System.nanoTime() - tt >= 0);
813	+	if (i != 0)
814	+	assertTrue(tt >= last);
815	+	last = tt;
816	+	}
817	+	assertTrue(q.isEmpty());
818	+	}
819	+
820	+	/**
821	+	* peek of a non-empty queue returns non-null even if not expired
822	+	*/
823	+	public void testPeekDelayed() {
824	+	DelayQueue q = new DelayQueue();
825	+	q.add(new NanoDelay(Long.MAX_VALUE));
826	+	assertNotNull(q.peek());
827	+	}
828	+
829	+	/**
830	+	* poll of a non-empty queue returns null if no expired elements.
831	+	*/
832	+	public void testPollDelayed() {
833	+	DelayQueue q = new DelayQueue();
834	+	q.add(new NanoDelay(Long.MAX_VALUE));
835	+	assertNull(q.poll());
836	+	}
837	+
838	+	/**
839	+	* timed poll of a non-empty queue returns null if no expired elements.
840	+	*/
841	+	public void testTimedPollDelayed() throws InterruptedException {
842	+	DelayQueue q = new DelayQueue();
843	+	q.add(new NanoDelay(LONG_DELAY_MS * 1000000L));
844	+	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
845	+	}
846
847	+	/**
848	+	* drainTo(null) throws NPE
849	+	*/
850	+	public void testDrainToNull() {
851	+	DelayQueue q = populatedQueue(SIZE);
852	+	try {
853	+	q.drainTo(null);
854	+	shouldThrow();
855	+	} catch (NullPointerException success) {}
856		}
857
858	+	/**
859	+	* drainTo(this) throws IAE
860	+	*/
861	+	public void testDrainToSelf() {
862	+	DelayQueue q = populatedQueue(SIZE);
863	+	try {
864	+	q.drainTo(q);
865	+	shouldThrow();
866	+	} catch (IllegalArgumentException success) {}
867	+	}
868
869		/**
870	<	* Dekayed actions do not occur until their delay elapses
870	>	* drainTo(c) empties queue into another collection c
871		*/
872	<	public void testDelay() {
872	>	public void testDrainTo() {
873		DelayQueue q = new DelayQueue();
874	<	NanoDelay[] elements = new NanoDelay[SIZE];
812	<	for (int i = 0; i < SIZE; ++i) {
813	<	elements[i] = new NanoDelay(1000000000L + 1000000L * (SIZE - i));
814	<	}
874	>	PDelay[] elems = new PDelay[SIZE];
875		for (int i = 0; i < SIZE; ++i) {
876	<	q.add(elements[i]);
876	>	elems[i] = new PDelay(i);
877	>	q.add(elems[i]);
878		}
879	+	ArrayList l = new ArrayList();
880	+	q.drainTo(l);
881	+	assertEquals(q.size(), 0);
882	+	for (int i = 0; i < SIZE; ++i)
883	+	assertEquals(l.get(i), elems[i]);
884	+	q.add(elems[0]);
885	+	q.add(elems[1]);
886	+	assertFalse(q.isEmpty());
887	+	assertTrue(q.contains(elems[0]));
888	+	assertTrue(q.contains(elems[1]));
889	+	l.clear();
890	+	q.drainTo(l);
891	+	assertEquals(q.size(), 0);
892	+	assertEquals(l.size(), 2);
893	+	for (int i = 0; i < 2; ++i)
894	+	assertEquals(l.get(i), elems[i]);
895	+	}
896	+
897	+	/**
898	+	* drainTo empties queue
899	+	*/
900	+	public void testDrainToWithActivePut() throws InterruptedException {
901	+	final DelayQueue q = populatedQueue(SIZE);
902	+	Thread t = new Thread(new CheckedRunnable() {
903	+	public void realRun() {
904	+	q.put(new PDelay(SIZE+1));
905	+	}});
906	+
907	+	t.start();
908	+	ArrayList l = new ArrayList();
909	+	q.drainTo(l);
910	+	assertTrue(l.size() >= SIZE);
911	+	t.join();
912	+	assertTrue(q.size() + l.size() >= SIZE);
913	+	}
914
915	+	/**
916	+	* drainTo(null, n) throws NPE
917	+	*/
918	+	public void testDrainToNullN() {
919	+	DelayQueue q = populatedQueue(SIZE);
920		try {
921	<	long last = 0;
922	<	for (int i = 0; i < SIZE; ++i) {
923	<	NanoDelay e = (NanoDelay)(q.take());
924	<	long tt = e.getTriggerTime();
925	<	assertTrue(tt <= System.nanoTime());
926	<	if (i != 0)
927	<	assertTrue(tt >= last);
928	<	last = tt;
929	<	}
930	<	}
931	<	catch(InterruptedException ie) {
932	<	unexpectedException();
921	>	q.drainTo(null, 0);
922	>	shouldThrow();
923	>	} catch (NullPointerException success) {}
924	>	}
925	>
926	>	/**
927	>	* drainTo(this, n) throws IAE
928	>	*/
929	>	public void testDrainToSelfN() {
930	>	DelayQueue q = populatedQueue(SIZE);
931	>	try {
932	>	q.drainTo(q, 0);
933	>	shouldThrow();
934	>	} catch (IllegalArgumentException success) {}
935	>	}
936	>
937	>	/**
938	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
939	>	*/
940	>	public void testDrainToN() {
941	>	for (int i = 0; i < SIZE + 2; ++i) {
942	>	DelayQueue q = populatedQueue(SIZE);
943	>	ArrayList l = new ArrayList();
944	>	q.drainTo(l, i);
945	>	int k = (i < SIZE) ? i : SIZE;
946	>	assertEquals(q.size(), SIZE-k);
947	>	assertEquals(l.size(), k);
948		}
949		}
950

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