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

Comparing jsr166/src/test/tck/DelayQueueTest.java (file contents):
Revision 1.4 by dl, Sat Sep 20 18:20:07 2003 UTC vs.
Revision 1.73 by jsr166, Sat May 23 00:53:08 2015 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 java.util.concurrent.*;
9	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	>
11	>	import java.util.ArrayList;
12	>	import java.util.Arrays;
13	>	import java.util.Collection;
14	>	import java.util.Iterator;
15	>	import java.util.NoSuchElementException;
16	>	import java.util.concurrent.BlockingQueue;
17	>	import java.util.concurrent.CountDownLatch;
18	>	import java.util.concurrent.Delayed;
19	>	import java.util.concurrent.DelayQueue;
20	>	import java.util.concurrent.Executors;
21	>	import java.util.concurrent.ExecutorService;
22	>	import java.util.concurrent.TimeUnit;
23	>
24	>	import junit.framework.Test;
25
26		public class DelayQueueTest extends JSR166TestCase {
27	+
28	+	public static class Generic extends BlockingQueueTest {
29	+	protected BlockingQueue emptyCollection() {
30	+	return new DelayQueue();
31	+	}
32	+	protected PDelay makeElement(int i) {
33	+	return new PDelay(i);
34	+	}
35	+	}
36	+
37		public static void main(String[] args) {
38	<	junit.textui.TestRunner.run (suite());
38	>	main(suite(), args);
39		}
40
41		public static Test suite() {
42	<	return new TestSuite(DelayQueueTest.class);
42	>	return newTestSuite(DelayQueueTest.class,
43	>	new Generic().testSuite());
44		}
45
21	–	private static final int NOCAP = Integer.MAX_VALUE;
22	–
46		/**
47	<	* A delayed implmentation for testing.
48	<	* Most Q/BQ tests use Pseudodelays, where delays are all elapsed
47	>	* A delayed implementation for testing.
48	>	* Most tests use Pseudodelays, where delays are all elapsed
49		* (so, no blocking solely for delays) but are still ordered
50	<	*/
51	<	static class PDelay implements Delayed {
50	>	*/
51	>	static class PDelay implements Delayed {
52		int pseudodelay;
53	<	PDelay(int i) { pseudodelay = Integer.MIN_VALUE + i; }
54	<	public int compareTo(Object y) {
55	<	int i = pseudodelay;
56	<	int j = ((PDelay)y).pseudodelay;
57	<	if (i < j) return -1;
35	<	if (i > j) return 1;
36	<	return 0;
53	>	PDelay(int i) { pseudodelay = i; }
54	>	public int compareTo(PDelay other) {
55	>	int a = this.pseudodelay;
56	>	int b = other.pseudodelay;
57	>	return (a < b) ? -1 : (a > b) ? 1 : 0;
58		}
59	<
60	<	public int compareTo(PDelay y) {
40	<	int i = pseudodelay;
41	<	int j = ((PDelay)y).pseudodelay;
42	<	if (i < j) return -1;
43	<	if (i > j) return 1;
44	<	return 0;
59	>	public int compareTo(Delayed y) {
60	>	return compareTo((PDelay)y);
61		}
46	–
62		public boolean equals(Object other) {
63	<	return ((PDelay)other).pseudodelay == pseudodelay;
64	<	}
50	<	public boolean equals(PDelay other) {
51	<	return ((PDelay)other).pseudodelay == pseudodelay;
63	>	return (other instanceof PDelay) &&
64	>	this.pseudodelay == ((PDelay)other).pseudodelay;
65		}
66	<
67	<
66	>	// suppress [overrides] javac warning
67	>	public int hashCode() { return pseudodelay; }
68		public long getDelay(TimeUnit ignore) {
69	<	return pseudodelay;
57	<	}
58	<	public int intValue() {
59	<	return pseudodelay;
69	>	return Integer.MIN_VALUE + pseudodelay;
70		}
61	–
71		public String toString() {
72		return String.valueOf(pseudodelay);
73		}
74		}
75
67	–
76		/**
77		* Delayed implementation that actually delays
78		*/
79	<	static class NanoDelay implements Delayed {
79	>	static class NanoDelay implements Delayed {
80		long trigger;
81	<	NanoDelay(long i) {
81	>	NanoDelay(long i) {
82		trigger = System.nanoTime() + i;
83		}
84	<	public int compareTo(Object y) {
84	>	public int compareTo(NanoDelay y) {
85		long i = trigger;
86	<	long j = ((NanoDelay)y).trigger;
86	>	long j = y.trigger;
87		if (i < j) return -1;
88		if (i > j) return 1;
89		return 0;
90		}
91
92	<	public int compareTo(NanoDelay y) {
93	<	long i = trigger;
86	<	long j = ((NanoDelay)y).trigger;
87	<	if (i < j) return -1;
88	<	if (i > j) return 1;
89	<	return 0;
92	>	public int compareTo(Delayed y) {
93	>	return compareTo((NanoDelay)y);
94		}
95
96		public boolean equals(Object other) {
97	<	return ((NanoDelay)other).trigger == trigger;
97	>	return equals((NanoDelay)other);
98		}
99		public boolean equals(NanoDelay other) {
100	<	return ((NanoDelay)other).trigger == trigger;
100	>	return other.trigger == trigger;
101		}
102
103	+	// suppress [overrides] javac warning
104	+	public int hashCode() { return (int) trigger; }
105	+
106		public long getDelay(TimeUnit unit) {
107		long n = trigger - System.nanoTime();
108		return unit.convert(n, TimeUnit.NANOSECONDS);
#	Line 110 | Line 117 | public class DelayQueueTest extends JSR1
117		}
118		}
119
113	–
120		/**
121	<	* Create a queue of given size containing consecutive
121	>	* Returns a new queue of given size containing consecutive
122		* PDelays 0 ... n.
123		*/
124	<	private DelayQueue populatedQueue(int n) {
125	<	DelayQueue q = new DelayQueue();
124	>	private DelayQueue<PDelay> populatedQueue(int n) {
125	>	DelayQueue<PDelay> q = new DelayQueue<PDelay>();
126		assertTrue(q.isEmpty());
127	<	for(int i = n-1; i >= 0; i-=2)
128	<	assertTrue(q.offer(new PDelay(i)));
129	<	for(int i = (n & 1); i < n; i+=2)
130	<	assertTrue(q.offer(new PDelay(i)));
127	>	for (int i = n-1; i >= 0; i -= 2)
128	>	assertTrue(q.offer(new PDelay(i)));
129	>	for (int i = (n & 1); i < n; i += 2)
130	>	assertTrue(q.offer(new PDelay(i)));
131		assertFalse(q.isEmpty());
132	<	assertEquals(NOCAP, q.remainingCapacity());
133	<	assertEquals(n, q.size());
132	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
133	>	assertEquals(n, q.size());
134		return q;
135		}
136	<
136	>
137		/**
138	<	*
138	>	* A new queue has unbounded capacity
139		*/
140		public void testConstructor1() {
141	<	assertEquals(NOCAP, new DelayQueue().remainingCapacity());
141	>	assertEquals(Integer.MAX_VALUE, new DelayQueue().remainingCapacity());
142		}
143
144		/**
145	<	*
145	>	* Initializing from null Collection throws NPE
146		*/
147		public void testConstructor3() {
148		try {
149	<	DelayQueue q = new DelayQueue(null);
149	>	new DelayQueue(null);
150		shouldThrow();
151	<	}
146	<	catch (NullPointerException success) {}
151	>	} catch (NullPointerException success) {}
152		}
153
154		/**
155	<	*
155	>	* Initializing from Collection of null elements throws NPE
156		*/
157		public void testConstructor4() {
158		try {
159	<	PDelay[] ints = new PDelay[SIZE];
155	<	DelayQueue q = new DelayQueue(Arrays.asList(ints));
159	>	new DelayQueue(Arrays.asList(new PDelay[SIZE]));
160		shouldThrow();
161	<	}
158	<	catch (NullPointerException success) {}
161	>	} catch (NullPointerException success) {}
162		}
163
164		/**
165	<	*
165	>	* Initializing from Collection with some null elements throws NPE
166		*/
167		public void testConstructor5() {
168	+	PDelay[] a = new PDelay[SIZE];
169	+	for (int i = 0; i < SIZE - 1; ++i)
170	+	a[i] = new PDelay(i);
171		try {
172	<	PDelay[] ints = new PDelay[SIZE];
167	<	for (int i = 0; i < SIZE-1; ++i)
168	<	ints[i] = new PDelay(i);
169	<	DelayQueue q = new DelayQueue(Arrays.asList(ints));
172	>	new DelayQueue(Arrays.asList(a));
173		shouldThrow();
174	<	}
172	<	catch (NullPointerException success) {}
174	>	} catch (NullPointerException success) {}
175		}
176
177		/**
178	<	*
178	>	* Queue contains all elements of collection used to initialize
179		*/
180		public void testConstructor6() {
181	<	try {
182	<	PDelay[] ints = new PDelay[SIZE];
183	<	for (int i = 0; i < SIZE; ++i)
184	<	ints[i] = new PDelay(i);
185	<	DelayQueue q = new DelayQueue(Arrays.asList(ints));
186	<	for (int i = 0; i < SIZE; ++i)
185	<	assertEquals(ints[i], q.poll());
186	<	}
187	<	finally {}
181	>	PDelay[] ints = new PDelay[SIZE];
182	>	for (int i = 0; i < SIZE; ++i)
183	>	ints[i] = new PDelay(i);
184	>	DelayQueue q = new DelayQueue(Arrays.asList(ints));
185	>	for (int i = 0; i < SIZE; ++i)
186	>	assertEquals(ints[i], q.poll());
187		}
188
189		/**
190	<	*
190	>	* isEmpty is true before add, false after
191		*/
192		public void testEmpty() {
193		DelayQueue q = new DelayQueue();
194		assertTrue(q.isEmpty());
195	<	assertEquals(NOCAP, q.remainingCapacity());
195	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
196		q.add(new PDelay(1));
197		assertFalse(q.isEmpty());
198		q.add(new PDelay(2));
#	Line 203 | Line 202 | public class DelayQueueTest extends JSR1
202		}
203
204		/**
205	<	*
205	>	* remainingCapacity() always returns Integer.MAX_VALUE
206		*/
207		public void testRemainingCapacity() {
208	<	DelayQueue q = populatedQueue(SIZE);
208	>	BlockingQueue q = populatedQueue(SIZE);
209		for (int i = 0; i < SIZE; ++i) {
210	<	assertEquals(NOCAP, q.remainingCapacity());
211	<	assertEquals(SIZE-i, q.size());
212	<	q.remove();
210	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
211	>	assertEquals(SIZE - i, q.size());
212	>	assertTrue(q.remove() instanceof PDelay);
213		}
214		for (int i = 0; i < SIZE; ++i) {
215	<	assertEquals(NOCAP, q.remainingCapacity());
215	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
216		assertEquals(i, q.size());
217	<	q.add(new PDelay(i));
217	>	assertTrue(q.add(new PDelay(i)));
218		}
219		}
220
221		/**
222	<	*
224	<	*/
225	<	public void testOfferNull() {
226	<	try {
227	<	DelayQueue q = new DelayQueue();
228	<	q.offer(null);
229	<	shouldThrow();
230	<	} catch (NullPointerException success) { }
231	<	}
232	<
233	<	/**
234	<	*
222	>	* offer non-null succeeds
223		*/
224		public void testOffer() {
225		DelayQueue q = new DelayQueue();
#	Line 240 | Line 228 | public class DelayQueueTest extends JSR1
228		}
229
230		/**
231	<	*
231	>	* add succeeds
232		*/
233		public void testAdd() {
234		DelayQueue q = new DelayQueue();
#	Line 251 | Line 239 | public class DelayQueueTest extends JSR1
239		}
240
241		/**
242	<	*
255	<	*/
256	<	public void testAddAll1() {
257	<	try {
258	<	DelayQueue q = new DelayQueue();
259	<	q.addAll(null);
260	<	shouldThrow();
261	<	}
262	<	catch (NullPointerException success) {}
263	<	}
264	<	/**
265	<	*
242	>	* addAll(this) throws IAE
243		*/
244	<	public void testAddAll2() {
244	>	public void testAddAllSelf() {
245	>	DelayQueue q = populatedQueue(SIZE);
246		try {
247	<	DelayQueue q = new DelayQueue();
270	<	PDelay[] ints = new PDelay[SIZE];
271	<	q.addAll(Arrays.asList(ints));
247	>	q.addAll(q);
248		shouldThrow();
249	<	}
274	<	catch (NullPointerException success) {}
249	>	} catch (IllegalArgumentException success) {}
250		}
251	+
252		/**
253	<	*
253	>	* addAll of a collection with any null elements throws NPE after
254	>	* possibly adding some elements
255		*/
256		public void testAddAll3() {
257	+	DelayQueue q = new DelayQueue();
258	+	PDelay[] a = new PDelay[SIZE];
259	+	for (int i = 0; i < SIZE - 1; ++i)
260	+	a[i] = new PDelay(i);
261		try {
262	<	DelayQueue q = new DelayQueue();
282	<	PDelay[] ints = new PDelay[SIZE];
283	<	for (int i = 0; i < SIZE-1; ++i)
284	<	ints[i] = new PDelay(i);
285	<	q.addAll(Arrays.asList(ints));
262	>	q.addAll(Arrays.asList(a));
263		shouldThrow();
264	<	}
288	<	catch (NullPointerException success) {}
264	>	} catch (NullPointerException success) {}
265		}
266
267		/**
268	<	*
268	>	* Queue contains all elements of successful addAll
269		*/
270		public void testAddAll5() {
271	<	try {
272	<	PDelay[] empty = new PDelay[0];
273	<	PDelay[] ints = new PDelay[SIZE];
274	<	for (int i = SIZE-1; i >= 0; --i)
275	<	ints[i] = new PDelay(i);
276	<	DelayQueue q = new DelayQueue();
277	<	assertFalse(q.addAll(Arrays.asList(empty)));
278	<	assertTrue(q.addAll(Arrays.asList(ints)));
279	<	for (int i = 0; i < SIZE; ++i)
304	<	assertEquals(ints[i], q.poll());
305	<	}
306	<	finally {}
271	>	PDelay[] empty = new PDelay[0];
272	>	PDelay[] ints = new PDelay[SIZE];
273	>	for (int i = SIZE - 1; i >= 0; --i)
274	>	ints[i] = new PDelay(i);
275	>	DelayQueue q = new DelayQueue();
276	>	assertFalse(q.addAll(Arrays.asList(empty)));
277	>	assertTrue(q.addAll(Arrays.asList(ints)));
278	>	for (int i = 0; i < SIZE; ++i)
279	>	assertEquals(ints[i], q.poll());
280		}
281
282		/**
283	<	*
311	<	*/
312	<	public void testPutNull() {
313	<	try {
314	<	DelayQueue q = new DelayQueue();
315	<	q.put(null);
316	<	shouldThrow();
317	<	}
318	<	catch (NullPointerException success){
319	<	}
320	<	}
321	<
322	<	/**
323	<	*
283	>	* all elements successfully put are contained
284		*/
285	<	public void testPut() {
286	<	try {
287	<	DelayQueue q = new DelayQueue();
288	<	for (int i = 0; i < SIZE; ++i) {
289	<	PDelay I = new PDelay(i);
290	<	q.put(I);
331	<	assertTrue(q.contains(I));
332	<	}
333	<	assertEquals(SIZE, q.size());
334	<	}
335	<	finally {
285	>	public void testPut() {
286	>	DelayQueue q = new DelayQueue();
287	>	for (int i = 0; i < SIZE; ++i) {
288	>	PDelay x = new PDelay(i);
289	>	q.put(x);
290	>	assertTrue(q.contains(x));
291		}
292	+	assertEquals(SIZE, q.size());
293		}
294
295		/**
296	<	*
296	>	* put doesn't block waiting for take
297		*/
298	<	public void testPutWithTake() {
298	>	public void testPutWithTake() throws InterruptedException {
299		final DelayQueue q = new DelayQueue();
300	<	Thread t = new Thread(new Runnable() {
301	<	public void run() {
302	<	int added = 0;
303	<	try {
304	<	q.put(new PDelay(0));
305	<	++added;
306	<	q.put(new PDelay(0));
307	<	++added;
308	<	q.put(new PDelay(0));
309	<	++added;
354	<	q.put(new PDelay(0));
355	<	++added;
356	<	threadAssertTrue(added == 4);
357	<	} finally {
358	<	}
359	<	}
360	<	});
361	<	try {
362	<	t.start();
363	<	Thread.sleep(SHORT_DELAY_MS);
364	<	q.take();
365	<	t.interrupt();
366	<	t.join();
367	<	} catch (Exception e){
368	<	unexpectedException();
369	<	}
300	>	Thread t = newStartedThread(new CheckedRunnable() {
301	>	public void realRun() {
302	>	q.put(new PDelay(0));
303	>	q.put(new PDelay(0));
304	>	q.put(new PDelay(0));
305	>	q.put(new PDelay(0));
306	>	}});
307	>
308	>	awaitTermination(t);
309	>	assertEquals(4, q.size());
310		}
311
312		/**
313	<	*
313	>	* timed offer does not time out
314		*/
315	<	public void testTimedOffer() {
315	>	public void testTimedOffer() throws InterruptedException {
316		final DelayQueue q = new DelayQueue();
317	<	Thread t = new Thread(new Runnable() {
318	<	public void run() {
319	<	try {
320	<	q.put(new PDelay(0));
321	<	q.put(new PDelay(0));
322	<	threadAssertTrue(q.offer(new PDelay(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
323	<	threadAssertTrue(q.offer(new PDelay(0), LONG_DELAY_MS, TimeUnit.MILLISECONDS));
324	<	} finally { }
325	<	}
386	<	});
387	<
388	<	try {
389	<	t.start();
390	<	Thread.sleep(SMALL_DELAY_MS);
391	<	t.interrupt();
392	<	t.join();
393	<	} catch (Exception e){
394	<	unexpectedException();
395	<	}
317	>	Thread t = newStartedThread(new CheckedRunnable() {
318	>	public void realRun() throws InterruptedException {
319	>	q.put(new PDelay(0));
320	>	q.put(new PDelay(0));
321	>	assertTrue(q.offer(new PDelay(0), SHORT_DELAY_MS, MILLISECONDS));
322	>	assertTrue(q.offer(new PDelay(0), LONG_DELAY_MS, MILLISECONDS));
323	>	}});
324	>
325	>	awaitTermination(t);
326		}
327
328		/**
329	<	*
329	>	* take retrieves elements in priority order
330		*/
331	<	public void testTake() {
332	<	try {
333	<	DelayQueue q = populatedQueue(SIZE);
334	<	for (int i = 0; i < SIZE; ++i) {
335	<	assertEquals(new PDelay(i), ((PDelay)q.take()));
406	<	}
407	<	} catch (InterruptedException e){
408	<	unexpectedException();
409	<	}
331	>	public void testTake() throws InterruptedException {
332	>	DelayQueue q = populatedQueue(SIZE);
333	>	for (int i = 0; i < SIZE; ++i) {
334	>	assertEquals(new PDelay(i), q.take());
335	>	}
336		}
337
338		/**
339	<	*
339	>	* Take removes existing elements until empty, then blocks interruptibly
340		*/
341	<	public void testTakeFromEmpty() {
342	<	final DelayQueue q = new DelayQueue();
343	<	Thread t = new Thread(new Runnable() {
344	<	public void run() {
345	<	try {
346	<	q.take();
347	<	threadShouldThrow();
422	<	} catch (InterruptedException success){ }
341	>	public void testBlockingTake() throws InterruptedException {
342	>	final DelayQueue q = populatedQueue(SIZE);
343	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
344	>	Thread t = newStartedThread(new CheckedRunnable() {
345	>	public void realRun() throws InterruptedException {
346	>	for (int i = 0; i < SIZE; ++i) {
347	>	assertEquals(new PDelay(i), ((PDelay)q.take()));
348		}
424	–	});
425	–	try {
426	–	t.start();
427	–	Thread.sleep(SHORT_DELAY_MS);
428	–	t.interrupt();
429	–	t.join();
430	–	} catch (Exception e){
431	–	unexpectedException();
432	–	}
433	–	}
349
350	<	/**
351	<	*
352	<	*/
353	<	public void testBlockingTake() {
354	<	Thread t = new Thread(new Runnable() {
355	<	public void run() {
356	<	try {
357	<	DelayQueue q = populatedQueue(SIZE);
358	<	for (int i = 0; i < SIZE; ++i) {
359	<	threadAssertEquals(new PDelay(i), ((PDelay)q.take()));
360	<	}
361	<	q.take();
362	<	threadShouldThrow();
363	<	} catch (InterruptedException success){
449	<	}
450	<	}});
451	<	t.start();
452	<	try {
453	<	Thread.sleep(SHORT_DELAY_MS);
454	<	t.interrupt();
455	<	t.join();
456	<	}
457	<	catch (InterruptedException ie) {
458	<	unexpectedException();
459	<	}
460	<	}
350	>	Thread.currentThread().interrupt();
351	>	try {
352	>	q.take();
353	>	shouldThrow();
354	>	} catch (InterruptedException success) {}
355	>	assertFalse(Thread.interrupted());
356	>
357	>	pleaseInterrupt.countDown();
358	>	try {
359	>	q.take();
360	>	shouldThrow();
361	>	} catch (InterruptedException success) {}
362	>	assertFalse(Thread.interrupted());
363	>	}});
364
365	+	await(pleaseInterrupt);
366	+	assertThreadStaysAlive(t);
367	+	t.interrupt();
368	+	awaitTermination(t);
369	+	}
370
371		/**
372	<	*
372	>	* poll succeeds unless empty
373		*/
374		public void testPoll() {
375		DelayQueue q = populatedQueue(SIZE);
376		for (int i = 0; i < SIZE; ++i) {
377	<	assertEquals(new PDelay(i), ((PDelay)q.poll()));
377	>	assertEquals(new PDelay(i), q.poll());
378		}
379	<	assertNull(q.poll());
379	>	assertNull(q.poll());
380		}
381
382		/**
383	<	*
383	>	* timed poll with zero timeout succeeds when non-empty, else times out
384		*/
385	<	public void testTimedPoll0() {
386	<	try {
387	<	DelayQueue q = populatedQueue(SIZE);
388	<	for (int i = 0; i < SIZE; ++i) {
389	<	assertEquals(new PDelay(i), ((PDelay)q.poll(0, TimeUnit.MILLISECONDS)));
390	<	}
483	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
484	<	} catch (InterruptedException e){
485	<	unexpectedException();
486	<	}
385	>	public void testTimedPoll0() throws InterruptedException {
386	>	DelayQueue q = populatedQueue(SIZE);
387	>	for (int i = 0; i < SIZE; ++i) {
388	>	assertEquals(new PDelay(i), q.poll(0, MILLISECONDS));
389	>	}
390	>	assertNull(q.poll(0, MILLISECONDS));
391		}
392
393		/**
394	<	*
394	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
395		*/
396	<	public void testTimedPoll() {
397	<	try {
398	<	DelayQueue q = populatedQueue(SIZE);
399	<	for (int i = 0; i < SIZE; ++i) {
400	<	assertEquals(new PDelay(i), ((PDelay)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)));
401	<	}
498	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
499	<	} catch (InterruptedException e){
500	<	unexpectedException();
501	<	}
502	<	}
503	<
504	<	/**
505	<	*
506	<	*/
507	<	public void testInterruptedTimedPoll() {
508	<	Thread t = new Thread(new Runnable() {
509	<	public void run() {
510	<	try {
511	<	DelayQueue q = populatedQueue(SIZE);
512	<	for (int i = 0; i < SIZE; ++i) {
513	<	threadAssertEquals(new PDelay(i), ((PDelay)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)));
514	<	}
515	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
516	<	} catch (InterruptedException success){
517	<	}
518	<	}});
519	<	t.start();
520	<	try {
521	<	Thread.sleep(SHORT_DELAY_MS);
522	<	t.interrupt();
523	<	t.join();
524	<	}
525	<	catch (InterruptedException ie) {
526	<	unexpectedException();
396	>	public void testTimedPoll() throws InterruptedException {
397	>	DelayQueue q = populatedQueue(SIZE);
398	>	for (int i = 0; i < SIZE; ++i) {
399	>	long startTime = System.nanoTime();
400	>	assertEquals(new PDelay(i), q.poll(LONG_DELAY_MS, MILLISECONDS));
401	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
402		}
403	+	long startTime = System.nanoTime();
404	+	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
405	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
406	+	checkEmpty(q);
407		}
408
409		/**
410	<	*
410	>	* Interrupted timed poll throws InterruptedException instead of
411	>	* returning timeout status
412		*/
413	<	public void testTimedPollWithOffer() {
414	<	final DelayQueue q = new DelayQueue();
415	<	Thread t = new Thread(new Runnable() {
416	<	public void run() {
417	<	try {
418	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
419	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
540	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
541	<	threadFail("Should block");
542	<	} catch (InterruptedException success) { }
413	>	public void testInterruptedTimedPoll() throws InterruptedException {
414	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
415	>	Thread t = newStartedThread(new CheckedRunnable() {
416	>	public void realRun() throws InterruptedException {
417	>	DelayQueue q = populatedQueue(SIZE);
418	>	for (int i = 0; i < SIZE; ++i) {
419	>	assertEquals(new PDelay(i), ((PDelay)q.poll(SHORT_DELAY_MS, MILLISECONDS)));
420		}
544	–	});
545	–	try {
546	–	t.start();
547	–	Thread.sleep(SMALL_DELAY_MS);
548	–	assertTrue(q.offer(new PDelay(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
549	–	t.interrupt();
550	–	t.join();
551	–	} catch (Exception e){
552	–	unexpectedException();
553	–	}
554	–	}
421
422	+	Thread.currentThread().interrupt();
423	+	try {
424	+	q.poll(LONG_DELAY_MS, MILLISECONDS);
425	+	shouldThrow();
426	+	} catch (InterruptedException success) {}
427	+	assertFalse(Thread.interrupted());
428	+
429	+	pleaseInterrupt.countDown();
430	+	try {
431	+	q.poll(LONG_DELAY_MS, MILLISECONDS);
432	+	shouldThrow();
433	+	} catch (InterruptedException success) {}
434	+	assertFalse(Thread.interrupted());
435	+	}});
436	+
437	+	await(pleaseInterrupt);
438	+	assertThreadStaysAlive(t);
439	+	t.interrupt();
440	+	awaitTermination(t);
441	+	}
442
443		/**
444	<	*
444	>	* peek returns next element, or null if empty
445		*/
446		public void testPeek() {
447		DelayQueue q = populatedQueue(SIZE);
448		for (int i = 0; i < SIZE; ++i) {
449	<	assertEquals(new PDelay(i), ((PDelay)q.peek()));
450	<	q.poll();
451	<	assertTrue(q.peek() == null ||
452	<	i != ((PDelay)q.peek()).intValue());
449	>	assertEquals(new PDelay(i), q.peek());
450	>	assertEquals(new PDelay(i), q.poll());
451	>	if (q.isEmpty())
452	>	assertNull(q.peek());
453	>	else
454	>	assertFalse(new PDelay(i).equals(q.peek()));
455		}
456	<	assertNull(q.peek());
456	>	assertNull(q.peek());
457		}
458
459		/**
460	<	*
460	>	* element returns next element, or throws NSEE if empty
461		*/
462		public void testElement() {
463		DelayQueue q = populatedQueue(SIZE);
464		for (int i = 0; i < SIZE; ++i) {
465	<	assertEquals(new PDelay(i), ((PDelay)q.element()));
465	>	assertEquals(new PDelay(i), q.element());
466		q.poll();
467		}
468		try {
469		q.element();
470		shouldThrow();
471	<	}
584	<	catch (NoSuchElementException success) {}
471	>	} catch (NoSuchElementException success) {}
472		}
473
474		/**
475	<	*
475	>	* remove removes next element, or throws NSEE if empty
476		*/
477		public void testRemove() {
478		DelayQueue q = populatedQueue(SIZE);
479		for (int i = 0; i < SIZE; ++i) {
480	<	assertEquals(new PDelay(i), ((PDelay)q.remove()));
480	>	assertEquals(new PDelay(i), q.remove());
481		}
482		try {
483		q.remove();
484		shouldThrow();
485	<	} catch (NoSuchElementException success){
599	<	}
485	>	} catch (NoSuchElementException success) {}
486		}
487
488		/**
489	<	*
604	<	*/
605	<	public void testRemoveElement() {
606	<	DelayQueue q = populatedQueue(SIZE);
607	<	for (int i = 1; i < SIZE; i+=2) {
608	<	assertTrue(q.remove(new PDelay(i)));
609	<	}
610	<	for (int i = 0; i < SIZE; i+=2) {
611	<	assertTrue(q.remove(new PDelay(i)));
612	<	assertFalse(q.remove(new PDelay(i+1)));
613	<	}
614	<	assertTrue(q.isEmpty());
615	<	}
616	<
617	<	/**
618	<	*
489	>	* contains(x) reports true when elements added but not yet removed
490		*/
491		public void testContains() {
492		DelayQueue q = populatedQueue(SIZE);
#	Line 627 | Line 498 | public class DelayQueueTest extends JSR1
498		}
499
500		/**
501	<	*
501	>	* clear removes all elements
502		*/
503		public void testClear() {
504		DelayQueue q = populatedQueue(SIZE);
505		q.clear();
506		assertTrue(q.isEmpty());
507		assertEquals(0, q.size());
508	<	assertEquals(NOCAP, q.remainingCapacity());
509	<	q.add(new PDelay(1));
508	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
509	>	PDelay x = new PDelay(1);
510	>	q.add(x);
511		assertFalse(q.isEmpty());
512	+	assertTrue(q.contains(x));
513		q.clear();
514		assertTrue(q.isEmpty());
515		}
516
517		/**
518	<	*
518	>	* containsAll(c) is true when c contains a subset of elements
519		*/
520		public void testContainsAll() {
521		DelayQueue q = populatedQueue(SIZE);
#	Line 656 | Line 529 | public class DelayQueueTest extends JSR1
529		}
530
531		/**
532	<	*
532	>	* retainAll(c) retains only those elements of c and reports true if changed
533		*/
534		public void testRetainAll() {
535		DelayQueue q = populatedQueue(SIZE);
#	Line 669 | Line 542 | public class DelayQueueTest extends JSR1
542		assertTrue(changed);
543
544		assertTrue(q.containsAll(p));
545	<	assertEquals(SIZE-i, q.size());
545	>	assertEquals(SIZE - i, q.size());
546		p.remove();
547		}
548		}
549
550		/**
551	<	*
551	>	* removeAll(c) removes only those elements of c and reports true if changed
552		*/
553		public void testRemoveAll() {
554		for (int i = 1; i < SIZE; ++i) {
555		DelayQueue q = populatedQueue(SIZE);
556		DelayQueue p = populatedQueue(i);
557		assertTrue(q.removeAll(p));
558	<	assertEquals(SIZE-i, q.size());
558	>	assertEquals(SIZE - i, q.size());
559		for (int j = 0; j < i; ++j) {
560	<	PDelay I = (PDelay)(p.remove());
561	<	assertFalse(q.contains(I));
560	>	PDelay x = (PDelay)(p.remove());
561	>	assertFalse(q.contains(x));
562		}
563		}
564		}
565
566		/**
567	<	*
567	>	* toArray contains all elements
568		*/
569	<	public void testToArray() {
569	>	public void testToArray() throws InterruptedException {
570		DelayQueue q = populatedQueue(SIZE);
571	<	Object[] o = q.toArray();
571	>	Object[] o = q.toArray();
572		Arrays.sort(o);
573	<	try {
574	<	for(int i = 0; i < o.length; i++)
702	<	assertEquals(o[i], q.take());
703	<	} catch (InterruptedException e){
704	<	unexpectedException();
705	<	}
573	>	for (int i = 0; i < o.length; i++)
574	>	assertSame(o[i], q.take());
575		}
576
577		/**
578	<	*
578	>	* toArray(a) contains all elements
579		*/
580		public void testToArray2() {
581	<	DelayQueue q = populatedQueue(SIZE);
582	<	PDelay[] ints = new PDelay[SIZE];
583	<	ints = (PDelay[])q.toArray(ints);
581	>	DelayQueue<PDelay> q = populatedQueue(SIZE);
582	>	PDelay[] ints = new PDelay[SIZE];
583	>	PDelay[] array = q.toArray(ints);
584	>	assertSame(ints, array);
585		Arrays.sort(ints);
586	<	try {
587	<	for(int i = 0; i < ints.length; i++)
588	<	assertEquals(ints[i], q.take());
589	<	} catch (InterruptedException e){
590	<	unexpectedException();
591	<	}
586	>	for (int i = 0; i < ints.length; i++)
587	>	assertSame(ints[i], q.remove());
588	>	}
589	>
590	>	/**
591	>	* toArray(incompatible array type) throws ArrayStoreException
592	>	*/
593	>	public void testToArray1_BadArg() {
594	>	DelayQueue q = populatedQueue(SIZE);
595	>	try {
596	>	q.toArray(new String[10]);
597	>	shouldThrow();
598	>	} catch (ArrayStoreException success) {}
599		}
600	<
600	>
601		/**
602	<	*
602	>	* iterator iterates through all elements
603		*/
604		public void testIterator() {
605		DelayQueue q = populatedQueue(SIZE);
606		int i = 0;
607	<	Iterator it = q.iterator();
608	<	while(it.hasNext()) {
607	>	Iterator it = q.iterator();
608	>	while (it.hasNext()) {
609		assertTrue(q.contains(it.next()));
610		++i;
611		}
612		assertEquals(i, SIZE);
613	+	assertIteratorExhausted(it);
614		}
615
616		/**
617	<	*
617	>	* iterator of empty collection has no elements
618		*/
619	<	public void testIteratorRemove () {
619	>	public void testEmptyIterator() {
620	>	assertIteratorExhausted(new DelayQueue().iterator());
621	>	}
622
623	+	/**
624	+	* iterator.remove removes current element
625	+	*/
626	+	public void testIteratorRemove() {
627		final DelayQueue q = new DelayQueue();
744	–
628		q.add(new PDelay(2));
629		q.add(new PDelay(1));
630		q.add(new PDelay(3));
748	–
631		Iterator it = q.iterator();
632		it.next();
633		it.remove();
752	–
634		it = q.iterator();
635	<	assertEquals(it.next(), new PDelay(2));
636	<	assertEquals(it.next(), new PDelay(3));
635	>	assertEquals(new PDelay(2), it.next());
636	>	assertEquals(new PDelay(3), it.next());
637		assertFalse(it.hasNext());
638		}
639
759	–
640		/**
641	<	*
641	>	* toString contains toStrings of elements
642		*/
643		public void testToString() {
644		DelayQueue q = populatedQueue(SIZE);
645		String s = q.toString();
646	<	for (int i = 0; i < SIZE; ++i) {
647	<	assertTrue(s.indexOf(String.valueOf(Integer.MIN_VALUE+i)) >= 0);
648	<	}
769	<	}
646	>	for (Object e : q)
647	>	assertTrue(s.contains(e.toString()));
648	>	}
649
650		/**
651	<	*
651	>	* timed poll transfers elements across Executor tasks
652		*/
653		public void testPollInExecutor() {
775	–
654		final DelayQueue q = new DelayQueue();
655	<
655	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
656		ExecutorService executor = Executors.newFixedThreadPool(2);
657	+	executor.execute(new CheckedRunnable() {
658	+	public void realRun() throws InterruptedException {
659	+	assertNull(q.poll());
660	+	threadsStarted.await();
661	+	assertNotNull(q.poll(LONG_DELAY_MS, MILLISECONDS));
662	+	checkEmpty(q);
663	+	}});
664	+
665	+	executor.execute(new CheckedRunnable() {
666	+	public void realRun() throws InterruptedException {
667	+	threadsStarted.await();
668	+	q.put(new PDelay(1));
669	+	}});
670
780	–	executor.execute(new Runnable() {
781	–	public void run() {
782	–	threadAssertNull(q.poll());
783	–	try {
784	–	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
785	–	threadAssertTrue(q.isEmpty());
786	–	}
787	–	catch (InterruptedException e) {
788	–	threadUnexpectedException();
789	–	}
790	–	}
791	–	});
792	–
793	–	executor.execute(new Runnable() {
794	–	public void run() {
795	–	try {
796	–	Thread.sleep(SHORT_DELAY_MS);
797	–	q.put(new PDelay(1));
798	–	}
799	–	catch (InterruptedException e) {
800	–	threadUnexpectedException();
801	–	}
802	–	}
803	–	});
804	–
671		joinPool(executor);
672	+	}
673
674	+	/**
675	+	* Delayed actions do not occur until their delay elapses
676	+	*/
677	+	public void testDelay() throws InterruptedException {
678	+	DelayQueue<NanoDelay> q = new DelayQueue<NanoDelay>();
679	+	for (int i = 0; i < SIZE; ++i)
680	+	q.add(new NanoDelay(1000000L * (SIZE - i)));
681	+
682	+	long last = 0;
683	+	for (int i = 0; i < SIZE; ++i) {
684	+	NanoDelay e = q.take();
685	+	long tt = e.getTriggerTime();
686	+	assertTrue(System.nanoTime() - tt >= 0);
687	+	if (i != 0)
688	+	assertTrue(tt >= last);
689	+	last = tt;
690	+	}
691	+	assertTrue(q.isEmpty());
692		}
693
694	+	/**
695	+	* peek of a non-empty queue returns non-null even if not expired
696	+	*/
697	+	public void testPeekDelayed() {
698	+	DelayQueue q = new DelayQueue();
699	+	q.add(new NanoDelay(Long.MAX_VALUE));
700	+	assertNotNull(q.peek());
701	+	}
702
703		/**
704	<	*
704	>	* poll of a non-empty queue returns null if no expired elements.
705		*/
706	<	public void testDelay() {
706	>	public void testPollDelayed() {
707		DelayQueue q = new DelayQueue();
708	<	NanoDelay[] elements = new NanoDelay[SIZE];
709	<	for (int i = 0; i < SIZE; ++i) {
710	<	elements[i] = new NanoDelay(1000000000L + 1000000L * (SIZE - i));
711	<	}
708	>	q.add(new NanoDelay(Long.MAX_VALUE));
709	>	assertNull(q.poll());
710	>	}
711	>
712	>	/**
713	>	* timed poll of a non-empty queue returns null if no expired elements.
714	>	*/
715	>	public void testTimedPollDelayed() throws InterruptedException {
716	>	DelayQueue q = new DelayQueue();
717	>	q.add(new NanoDelay(LONG_DELAY_MS * 1000000L));
718	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
719	>	}
720	>
721	>	/**
722	>	* drainTo(c) empties queue into another collection c
723	>	*/
724	>	public void testDrainTo() {
725	>	DelayQueue q = new DelayQueue();
726	>	PDelay[] elems = new PDelay[SIZE];
727		for (int i = 0; i < SIZE; ++i) {
728	<	q.add(elements[i]);
728	>	elems[i] = new PDelay(i);
729	>	q.add(elems[i]);
730		}
731	+	ArrayList l = new ArrayList();
732	+	q.drainTo(l);
733	+	assertEquals(0, q.size());
734	+	for (int i = 0; i < SIZE; ++i)
735	+	assertEquals(elems[i], l.get(i));
736	+	q.add(elems[0]);
737	+	q.add(elems[1]);
738	+	assertFalse(q.isEmpty());
739	+	assertTrue(q.contains(elems[0]));
740	+	assertTrue(q.contains(elems[1]));
741	+	l.clear();
742	+	q.drainTo(l);
743	+	assertEquals(0, q.size());
744	+	assertEquals(2, l.size());
745	+	for (int i = 0; i < 2; ++i)
746	+	assertEquals(elems[i], l.get(i));
747	+	}
748
749	<	try {
750	<	long last = 0;
751	<	for (int i = 0; i < SIZE; ++i) {
752	<	NanoDelay e = (NanoDelay)(q.take());
753	<	long tt = e.getTriggerTime();
754	<	assertTrue(tt <= System.nanoTime());
755	<	if (i != 0)
756	<	assertTrue(tt >= last);
757	<	last = tt;
758	<	}
759	<	}
760	<	catch(InterruptedException ie) {
761	<	unexpectedException();
749	>	/**
750	>	* drainTo empties queue
751	>	*/
752	>	public void testDrainToWithActivePut() throws InterruptedException {
753	>	final DelayQueue q = populatedQueue(SIZE);
754	>	Thread t = new Thread(new CheckedRunnable() {
755	>	public void realRun() {
756	>	q.put(new PDelay(SIZE + 1));
757	>	}});
758	>
759	>	t.start();
760	>	ArrayList l = new ArrayList();
761	>	q.drainTo(l);
762	>	assertTrue(l.size() >= SIZE);
763	>	t.join();
764	>	assertTrue(q.size() + l.size() >= SIZE);
765	>	}
766	>
767	>	/**
768	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
769	>	*/
770	>	public void testDrainToN() {
771	>	for (int i = 0; i < SIZE + 2; ++i) {
772	>	DelayQueue q = populatedQueue(SIZE);
773	>	ArrayList l = new ArrayList();
774	>	q.drainTo(l, i);
775	>	int k = (i < SIZE) ? i : SIZE;
776	>	assertEquals(SIZE - k, q.size());
777	>	assertEquals(k, l.size());
778		}
779		}
780
781	+	/**
782	+	* remove(null), contains(null) always return false
783	+	*/
784	+	public void testNeverContainsNull() {
785	+	Collection<?> q = populatedQueue(SIZE);
786	+	assertFalse(q.contains(null));
787	+	assertFalse(q.remove(null));
788	+	}
789		}

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