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

Comparing jsr166/src/test/tck/DelayQueueTest.java (file contents):
Revision 1.1 by dl, Sun Aug 31 19:24:54 2003 UTC vs.
Revision 1.21 by jsr166, Sat Nov 21 10:29:50 2009 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
2	>	* Written by Doug Lea with assistance from members of JCP JSR-166
3	>	* Expert Group and released to the public domain, as explained at
4	>	* http://creativecommons.org/licenses/publicdomain
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9		import junit.framework.*;
10		import java.util.*;
11	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
12		import java.util.concurrent.*;
13
14	<	public class DelayQueueTest extends TestCase {
13	<
14	<	private static final int N = 10;
15	<	private static final long SHORT_DELAY_MS = 100;
16	<	private static final long MEDIUM_DELAY_MS = 1000;
17	<	private static final long LONG_DELAY_MS = 10000;
18	<	private static final int NOCAP = Integer.MAX_VALUE;
19	<
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	<	// Most Q/BQ tests use Pseudodelays, where delays are all elapsed
29	<	// (so, no blocking solely for delays) but are still ordered
23	>	private static final int NOCAP = Integer.MAX_VALUE;
24
25	<	static class PDelay implements Delayed {
25	>	/**
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 {
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;
36		if (i < j) return -1;
#	Line 39 | Line 38 | public class DelayQueueTest extends Test
38		return 0;
39		}
40
41	<	public int compareTo(PDelay y) {
41	>	public int compareTo(Delayed y) {
42		int i = pseudodelay;
43		int j = ((PDelay)y).pseudodelay;
44		if (i < j) return -1;
#	Line 68 | Line 67 | public class DelayQueueTest extends Test
67		}
68
69
70	+	/**
71	+	* Delayed implementation that actually delays
72	+	*/
73	+	static class NanoDelay implements Delayed {
74	+	long trigger;
75	+	NanoDelay(long i) {
76	+	trigger = System.nanoTime() + i;
77	+	}
78	+	public int compareTo(NanoDelay y) {
79	+	long i = trigger;
80	+	long j = ((NanoDelay)y).trigger;
81	+	if (i < j) return -1;
82	+	if (i > j) return 1;
83	+	return 0;
84	+	}
85	+
86	+	public int compareTo(Delayed y) {
87	+	long i = trigger;
88	+	long j = ((NanoDelay)y).trigger;
89	+	if (i < j) return -1;
90	+	if (i > j) return 1;
91	+	return 0;
92	+	}
93	+
94	+	public boolean equals(Object other) {
95	+	return ((NanoDelay)other).trigger == trigger;
96	+	}
97	+	public boolean equals(NanoDelay other) {
98	+	return ((NanoDelay)other).trigger == trigger;
99	+	}
100	+
101	+	public long getDelay(TimeUnit unit) {
102	+	long n = trigger - System.nanoTime();
103	+	return unit.convert(n, TimeUnit.NANOSECONDS);
104	+	}
105	+
106	+	public long getTriggerTime() {
107	+	return trigger;
108	+	}
109	+
110	+	public String toString() {
111	+	return String.valueOf(trigger);
112	+	}
113	+	}
114
115
116		/**
117		* Create a queue of given size containing consecutive
118		* PDelays 0 ... n.
119		*/
120	<	private DelayQueue fullQueue(int n) {
120	>	private DelayQueue populatedQueue(int n) {
121		DelayQueue q = new DelayQueue();
122		assertTrue(q.isEmpty());
123	<	for(int i = n-1; i >= 0; i-=2)
124	<	assertTrue(q.offer(new PDelay(i)));
125	<	for(int i = (n & 1); i < n; i+=2)
126	<	assertTrue(q.offer(new PDelay(i)));
123	>	for (int i = n-1; i >= 0; i-=2)
124	>	assertTrue(q.offer(new PDelay(i)));
125	>	for (int i = (n & 1); i < n; i+=2)
126	>	assertTrue(q.offer(new PDelay(i)));
127		assertFalse(q.isEmpty());
128		assertEquals(NOCAP, q.remainingCapacity());
129	<	assertEquals(n, q.size());
129	>	assertEquals(n, q.size());
130		return q;
131		}
132	<
133	<	public void testConstructor1(){
132	>
133	>	/**
134	>	* A new queue has unbounded capacity
135	>	*/
136	>	public void testConstructor1() {
137		assertEquals(NOCAP, new DelayQueue().remainingCapacity());
138		}
139
140	<	public void testConstructor3(){
141	<
140	>	/**
141	>	* Initializing from null Collection throws NPE
142	>	*/
143	>	public void testConstructor3() {
144		try {
145		DelayQueue q = new DelayQueue(null);
146	<	fail("Cannot make from null collection");
147	<	}
100	<	catch (NullPointerException success) {}
146	>	shouldThrow();
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[N];
155	>	PDelay[] ints = new PDelay[SIZE];
156		DelayQueue q = new DelayQueue(Arrays.asList(ints));
157	<	fail("Cannot make with null elements");
158	<	}
109	<	catch (NullPointerException success) {}
157	>	shouldThrow();
158	>	} catch (NullPointerException success) {}
159		}
160
161	<	public void testConstructor5(){
161	>	/**
162	>	* Initializing from Collection with some null elements throws NPE
163	>	*/
164	>	public void testConstructor5() {
165		try {
166	<	PDelay[] ints = new PDelay[N];
167	<	for (int i = 0; i < N-1; ++i)
166	>	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));
170	<	fail("Cannot make with null elements");
171	<	}
120	<	catch (NullPointerException success) {}
170	>	shouldThrow();
171	>	} catch (NullPointerException success) {}
172		}
173
174	<	public void testConstructor6(){
175	<	try {
176	<	PDelay[] ints = new PDelay[N];
177	<	for (int i = 0; i < N; ++i)
178	<	ints[i] = new PDelay(i);
179	<	DelayQueue q = new DelayQueue(Arrays.asList(ints));
180	<	for (int i = 0; i < N; ++i)
181	<	assertEquals(ints[i], q.poll());
182	<	}
183	<	finally {}
174	>	/**
175	>	* Queue contains all elements of collection used to initialize
176	>	*/
177	>	public void testConstructor6() {
178	>	PDelay[] ints = new PDelay[SIZE];
179	>	for (int i = 0; i < SIZE; ++i)
180	>	ints[i] = new PDelay(i);
181	>	DelayQueue q = new DelayQueue(Arrays.asList(ints));
182	>	for (int i = 0; i < SIZE; ++i)
183	>	assertEquals(ints[i], q.poll());
184		}
185
186	+	/**
187	+	* isEmpty is true before add, false after
188	+	*/
189		public void testEmpty() {
190		DelayQueue q = new DelayQueue();
191		assertTrue(q.isEmpty());
#	Line 144 | Line 198 | public class DelayQueueTest extends Test
198		assertTrue(q.isEmpty());
199		}
200
201	<	public void testRemainingCapacity(){
202	<	DelayQueue q = fullQueue(N);
203	<	for (int i = 0; i < N; ++i) {
201	>	/**
202	>	* remainingCapacity does not change when elementa added or removed,
203	>	* but size does
204	>	*/
205	>	public void testRemainingCapacity() {
206	>	DelayQueue q = populatedQueue(SIZE);
207	>	for (int i = 0; i < SIZE; ++i) {
208		assertEquals(NOCAP, q.remainingCapacity());
209	<	assertEquals(N-i, q.size());
209	>	assertEquals(SIZE-i, q.size());
210		q.remove();
211		}
212	<	for (int i = 0; i < N; ++i) {
212	>	for (int i = 0; i < SIZE; ++i) {
213		assertEquals(NOCAP, q.remainingCapacity());
214		assertEquals(i, q.size());
215		q.add(new PDelay(i));
216		}
217		}
218
219	<	public void testOfferNull(){
220	<	try {
219	>	/**
220	>	* offer(null) throws NPE
221	>	*/
222	>	public void testOfferNull() {
223	>	try {
224		DelayQueue q = new DelayQueue();
225		q.offer(null);
226	<	fail("should throw NPE");
227	<	} catch (NullPointerException success) { }
226	>	shouldThrow();
227	>	} catch (NullPointerException success) {}
228	>	}
229	>
230	>	/**
231	>	* add(null) throws NPE
232	>	*/
233	>	public void testAddNull() {
234	>	try {
235	>	DelayQueue q = new DelayQueue();
236	>	q.add(null);
237	>	shouldThrow();
238	>	} catch (NullPointerException success) {}
239		}
240
241	+	/**
242	+	* offer non-null succeeds
243	+	*/
244		public void testOffer() {
245		DelayQueue q = new DelayQueue();
246		assertTrue(q.offer(new PDelay(0)));
247		assertTrue(q.offer(new PDelay(1)));
248		}
249
250	<	public void testAdd(){
250	>	/**
251	>	* add succeeds
252	>	*/
253	>	public void testAdd() {
254		DelayQueue q = new DelayQueue();
255	<	for (int i = 0; i < N; ++i) {
255	>	for (int i = 0; i < SIZE; ++i) {
256		assertEquals(i, q.size());
257		assertTrue(q.add(new PDelay(i)));
258		}
259		}
260
261	<	public void testAddAll1(){
261	>	/**
262	>	* addAll(null) throws NPE
263	>	*/
264	>	public void testAddAll1() {
265		try {
266		DelayQueue q = new DelayQueue();
267		q.addAll(null);
268	<	fail("Cannot add null collection");
269	<	}
189	<	catch (NullPointerException success) {}
268	>	shouldThrow();
269	>	} catch (NullPointerException success) {}
270		}
271	<	public void testAddAll2(){
271	>
272	>
273	>	/**
274	>	* addAll(this) throws IAE
275	>	*/
276	>	public void testAddAllSelf() {
277	>	try {
278	>	DelayQueue q = populatedQueue(SIZE);
279	>	q.addAll(q);
280	>	shouldThrow();
281	>	} catch (IllegalArgumentException success) {}
282	>	}
283	>
284	>	/**
285	>	* addAll of a collection with null elements throws NPE
286	>	*/
287	>	public void testAddAll2() {
288		try {
289		DelayQueue q = new DelayQueue();
290	<	PDelay[] ints = new PDelay[N];
290	>	PDelay[] ints = new PDelay[SIZE];
291		q.addAll(Arrays.asList(ints));
292	<	fail("Cannot add null elements");
293	<	}
198	<	catch (NullPointerException success) {}
292	>	shouldThrow();
293	>	} catch (NullPointerException success) {}
294		}
295	<	public void testAddAll3(){
295	>	/**
296	>	* addAll of a collection with any null elements throws NPE after
297	>	* possibly adding some elements
298	>	*/
299	>	public void testAddAll3() {
300		try {
301		DelayQueue q = new DelayQueue();
302	<	PDelay[] ints = new PDelay[N];
303	<	for (int i = 0; i < N-1; ++i)
302	>	PDelay[] ints = new PDelay[SIZE];
303	>	for (int i = 0; i < SIZE-1; ++i)
304		ints[i] = new PDelay(i);
305		q.addAll(Arrays.asList(ints));
306	<	fail("Cannot add null elements");
307	<	}
209	<	catch (NullPointerException success) {}
306	>	shouldThrow();
307	>	} catch (NullPointerException success) {}
308		}
309
310	<	public void testAddAll5(){
311	<	try {
312	<	PDelay[] empty = new PDelay[0];
313	<	PDelay[] ints = new PDelay[N];
314	<	for (int i = N-1; i >= 0; --i)
315	<	ints[i] = new PDelay(i);
316	<	DelayQueue q = new DelayQueue();
317	<	assertFalse(q.addAll(Arrays.asList(empty)));
318	<	assertTrue(q.addAll(Arrays.asList(ints)));
319	<	for (int i = 0; i < N; ++i)
320	<	assertEquals(ints[i], q.poll());
321	<	}
322	<	finally {}
310	>	/**
311	>	* Queue contains all elements of successful addAll
312	>	*/
313	>	public void testAddAll5() {
314	>	PDelay[] empty = new PDelay[0];
315	>	PDelay[] ints = new PDelay[SIZE];
316	>	for (int i = SIZE-1; i >= 0; --i)
317	>	ints[i] = new PDelay(i);
318	>	DelayQueue q = new DelayQueue();
319	>	assertFalse(q.addAll(Arrays.asList(empty)));
320	>	assertTrue(q.addAll(Arrays.asList(ints)));
321	>	for (int i = 0; i < SIZE; ++i)
322	>	assertEquals(ints[i], q.poll());
323		}
324
325	+	/**
326	+	* put(null) throws NPE
327	+	*/
328		public void testPutNull() {
329	<	try {
329	>	try {
330		DelayQueue q = new DelayQueue();
331		q.put(null);
332	<	fail("put should throw NPE");
333	<	}
233	<	catch (NullPointerException success){
234	<	}
332	>	shouldThrow();
333	>	} catch (NullPointerException success) {}
334		}
335
336	+	/**
337	+	* all elements successfully put are contained
338	+	*/
339		public void testPut() {
340	<	try {
341	<	DelayQueue q = new DelayQueue();
342	<	for (int i = 0; i < N; ++i) {
343	<	PDelay I = new PDelay(i);
344	<	q.put(I);
243	<	assertTrue(q.contains(I));
244	<	}
245	<	assertEquals(N, q.size());
340	>	DelayQueue q = new DelayQueue();
341	>	for (int i = 0; i < SIZE; ++i) {
342	>	PDelay I = new PDelay(i);
343	>	q.put(I);
344	>	assertTrue(q.contains(I));
345		}
346	<	finally {
248	<	}
346	>	assertEquals(SIZE, q.size());
347		}
348
349	<	public void testPutWithTake() {
349	>	/**
350	>	* put doesn't block waiting for take
351	>	*/
352	>	public void testPutWithTake() throws InterruptedException {
353		final DelayQueue q = new DelayQueue();
354	<	Thread t = new Thread(new Runnable() {
355	<	public void run(){
356	<	int added = 0;
357	<	try {
358	<	q.put(new PDelay(0));
359	<	++added;
360	<	q.put(new PDelay(0));
361	<	++added;
362	<	q.put(new PDelay(0));
363	<	++added;
364	<	q.put(new PDelay(0));
365	<	++added;
366	<	assertTrue(added == 4);
266	<	} finally {
267	<	}
268	<	}
269	<	});
270	<	try {
271	<	t.start();
272	<	Thread.sleep(SHORT_DELAY_MS);
273	<	q.take();
274	<	t.interrupt();
275	<	t.join();
276	<	} catch (Exception e){
277	<	fail("Unexpected exception");
278	<	}
354	>	Thread t = new Thread(new CheckedRunnable() {
355	>	public void realRun() {
356	>	q.put(new PDelay(0));
357	>	q.put(new PDelay(0));
358	>	q.put(new PDelay(0));
359	>	q.put(new PDelay(0));
360	>	}});
361	>
362	>	t.start();
363	>	Thread.sleep(SHORT_DELAY_MS);
364	>	q.take();
365	>	t.interrupt();
366	>	t.join();
367		}
368
369	<	public void testTimedOffer() {
369	>	/**
370	>	* timed offer does not time out
371	>	*/
372	>	public void testTimedOffer() throws InterruptedException {
373		final DelayQueue q = new DelayQueue();
374	<	Thread t = new Thread(new Runnable() {
375	<	public void run(){
376	<	try {
377	<	q.put(new PDelay(0));
378	<	q.put(new PDelay(0));
379	<	assertTrue(q.offer(new PDelay(0), SHORT_DELAY_MS/2, TimeUnit.MILLISECONDS));
380	<	assertTrue(q.offer(new PDelay(0), LONG_DELAY_MS, TimeUnit.MILLISECONDS));
381	<	} finally { }
382	<	}
383	<	});
384	<
385	<	try {
295	<	t.start();
296	<	Thread.sleep(SHORT_DELAY_MS);
297	<	t.interrupt();
298	<	t.join();
299	<	} catch (Exception e){
300	<	fail("Unexpected exception");
301	<	}
374	>	Thread t = new Thread(new CheckedRunnable() {
375	>	public void realRun() throws InterruptedException {
376	>	q.put(new PDelay(0));
377	>	q.put(new PDelay(0));
378	>	threadAssertTrue(q.offer(new PDelay(0), SHORT_DELAY_MS, MILLISECONDS));
379	>	threadAssertTrue(q.offer(new PDelay(0), LONG_DELAY_MS, MILLISECONDS));
380	>	}});
381	>
382	>	t.start();
383	>	Thread.sleep(SMALL_DELAY_MS);
384	>	t.interrupt();
385	>	t.join();
386		}
387
388	<	public void testTake(){
389	<	try {
390	<	DelayQueue q = fullQueue(N);
391	<	for (int i = 0; i < N; ++i) {
392	<	assertEquals(new PDelay(i), ((PDelay)q.take()));
393	<	}
394	<	} catch (InterruptedException e){
395	<	fail("Unexpected exception");
312	<	}
388	>	/**
389	>	* take retrieves elements in priority order
390	>	*/
391	>	public void testTake() throws InterruptedException {
392	>	DelayQueue q = populatedQueue(SIZE);
393	>	for (int i = 0; i < SIZE; ++i) {
394	>	assertEquals(new PDelay(i), ((PDelay)q.take()));
395	>	}
396		}
397
398	<	public void testTakeFromEmpty() {
398	>	/**
399	>	* take blocks interruptibly when empty
400	>	*/
401	>	public void testTakeFromEmpty() throws InterruptedException {
402		final DelayQueue q = new DelayQueue();
403	<	Thread t = new Thread(new Runnable() {
404	<	public void run(){
405	<	try {
406	<	q.take();
407	<	fail("Should block");
408	<	} catch (InterruptedException success){ }
409	<	}
410	<	});
411	<	try {
326	<	t.start();
327	<	Thread.sleep(SHORT_DELAY_MS);
328	<	t.interrupt();
329	<	t.join();
330	<	} catch (Exception e){
331	<	fail("Unexpected exception");
332	<	}
403	>	Thread t = new ThreadShouldThrow(InterruptedException.class) {
404	>	public void realRun() throws InterruptedException {
405	>	q.take();
406	>	}};
407	>
408	>	t.start();
409	>	Thread.sleep(SHORT_DELAY_MS);
410	>	t.interrupt();
411	>	t.join();
412		}
413
414	<	public void testBlockingTake(){
415	<	Thread t = new Thread(new Runnable() {
416	<	public void run() {
417	<	try {
418	<	DelayQueue q = fullQueue(N);
419	<	for (int i = 0; i < N; ++i) {
420	<	assertEquals(new PDelay(i), ((PDelay)q.take()));
421	<	}
422	<	q.take();
423	<	fail("take should block");
424	<	} catch (InterruptedException success){
425	<	}
426	<	}});
414	>	/**
415	>	* Take removes existing elements until empty, then blocks interruptibly
416	>	*/
417	>	public void testBlockingTake() throws InterruptedException {
418	>	Thread t = new ThreadShouldThrow(InterruptedException.class) {
419	>	public void realRun() throws InterruptedException {
420	>	DelayQueue q = populatedQueue(SIZE);
421	>	for (int i = 0; i < SIZE; ++i) {
422	>	threadAssertEquals(new PDelay(i), ((PDelay)q.take()));
423	>	}
424	>	q.take();
425	>	}};
426	>
427		t.start();
428	<	try {
429	<	Thread.sleep(SHORT_DELAY_MS);
430	<	t.interrupt();
352	<	t.join();
353	<	}
354	<	catch (InterruptedException ie) {
355	<	fail("Unexpected exception");
356	<	}
428	>	Thread.sleep(SHORT_DELAY_MS);
429	>	t.interrupt();
430	>	t.join();
431		}
432
433
434	<	public void testPoll(){
435	<	DelayQueue q = fullQueue(N);
436	<	for (int i = 0; i < N; ++i) {
434	>	/**
435	>	* poll succeeds unless empty
436	>	*/
437	>	public void testPoll() {
438	>	DelayQueue q = populatedQueue(SIZE);
439	>	for (int i = 0; i < SIZE; ++i) {
440		assertEquals(new PDelay(i), ((PDelay)q.poll()));
441		}
442	<	assertNull(q.poll());
442	>	assertNull(q.poll());
443		}
444
445	<	public void testTimedPoll0() {
446	<	try {
447	<	DelayQueue q = fullQueue(N);
448	<	for (int i = 0; i < N; ++i) {
449	<	assertEquals(new PDelay(i), ((PDelay)q.poll(0, TimeUnit.MILLISECONDS)));
450	<	}
451	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
452	<	} catch (InterruptedException e){
453	<	fail("Unexpected exception");
377	<	}
445	>	/**
446	>	* timed pool with zero timeout succeeds when non-empty, else times out
447	>	*/
448	>	public void testTimedPoll0() throws InterruptedException {
449	>	DelayQueue q = populatedQueue(SIZE);
450	>	for (int i = 0; i < SIZE; ++i) {
451	>	assertEquals(new PDelay(i), ((PDelay)q.poll(0, MILLISECONDS)));
452	>	}
453	>	assertNull(q.poll(0, MILLISECONDS));
454		}
455
456	<	public void testTimedPoll() {
457	<	try {
458	<	DelayQueue q = fullQueue(N);
459	<	for (int i = 0; i < N; ++i) {
460	<	assertEquals(new PDelay(i), ((PDelay)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)));
461	<	}
462	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
387	<	} catch (InterruptedException e){
388	<	fail("Unexpected exception");
389	<	}
390	<	}
391	<
392	<	public void testInterruptedTimedPoll(){
393	<	Thread t = new Thread(new Runnable() {
394	<	public void run() {
395	<	try {
396	<	DelayQueue q = fullQueue(N);
397	<	for (int i = 0; i < N; ++i) {
398	<	assertEquals(new PDelay(i), ((PDelay)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)));
399	<	}
400	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
401	<	} catch (InterruptedException success){
402	<	}
403	<	}});
404	<	t.start();
405	<	try {
406	<	Thread.sleep(SHORT_DELAY_MS);
407	<	t.interrupt();
408	<	t.join();
409	<	}
410	<	catch (InterruptedException ie) {
411	<	fail("Unexpected exception");
456	>	/**
457	>	* timed pool with nonzero timeout succeeds when non-empty, else times out
458	>	*/
459	>	public void testTimedPoll() throws InterruptedException {
460	>	DelayQueue q = populatedQueue(SIZE);
461	>	for (int i = 0; i < SIZE; ++i) {
462	>	assertEquals(new PDelay(i), ((PDelay)q.poll(SHORT_DELAY_MS, MILLISECONDS)));
463		}
464	+	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
465		}
466
467	<	public void testTimedPollWithOffer(){
468	<	final DelayQueue q = new DelayQueue();
469	<	Thread t = new Thread(new Runnable() {
470	<	public void run(){
471	<	try {
472	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
473	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
474	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
475	<	fail("Should block");
476	<	} catch (InterruptedException success) { }
467	>	/**
468	>	* Interrupted timed poll throws InterruptedException instead of
469	>	* returning timeout status
470	>	*/
471	>	public void testInterruptedTimedPoll() throws InterruptedException {
472	>	Thread t = new Thread(new CheckedRunnable() {
473	>	public void realRun() throws InterruptedException {
474	>	DelayQueue q = populatedQueue(SIZE);
475	>	for (int i = 0; i < SIZE; ++i) {
476	>	assertEquals(new PDelay(i), ((PDelay)q.poll(SHORT_DELAY_MS, MILLISECONDS)));
477		}
478	<	});
479	<	try {
480	<	t.start();
481	<	Thread.sleep(SHORT_DELAY_MS * 2);
482	<	assertTrue(q.offer(new PDelay(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
483	<	t.interrupt();
484	<	t.join();
485	<	} catch (Exception e){
486	<	fail("Unexpected exception");
487	<	}
488	<	}
489	<
490	<
491	<	public void testPeek(){
492	<	DelayQueue q = fullQueue(N);
493	<	for (int i = 0; i < N; ++i) {
478	>	try {
479	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
480	>	shouldThrow();
481	>	} catch (InterruptedException success) {}
482	>	}});
483	>
484	>	t.start();
485	>	Thread.sleep(SHORT_DELAY_MS);
486	>	t.interrupt();
487	>	t.join();
488	>	}
489	>
490	>	/**
491	>	*  timed poll before a delayed offer fails; after offer succeeds;
492	>	*  on interruption throws
493	>	*/
494	>	public void testTimedPollWithOffer() throws InterruptedException {
495	>	final DelayQueue q = new DelayQueue();
496	>	Thread t = new Thread(new CheckedRunnable() {
497	>	public void realRun() throws InterruptedException {
498	>	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
499	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
500	>	try {
501	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
502	>	shouldThrow();
503	>	} catch (InterruptedException success) {}
504	>	}});
505	>
506	>	t.start();
507	>	Thread.sleep(SMALL_DELAY_MS);
508	>	assertTrue(q.offer(new PDelay(0), SHORT_DELAY_MS, MILLISECONDS));
509	>	t.interrupt();
510	>	t.join();
511	>	}
512	>
513	>
514	>	/**
515	>	* peek returns next element, or null if empty
516	>	*/
517	>	public void testPeek() {
518	>	DelayQueue q = populatedQueue(SIZE);
519	>	for (int i = 0; i < SIZE; ++i) {
520		assertEquals(new PDelay(i), ((PDelay)q.peek()));
521		q.poll();
522	<	assertTrue(q.peek() == null ||
523	<	i != ((PDelay)q.peek()).intValue());
522	>	if (q.isEmpty())
523	>	assertNull(q.peek());
524	>	else
525	>	assertTrue(i != ((PDelay)q.peek()).intValue());
526		}
527	<	assertNull(q.peek());
527	>	assertNull(q.peek());
528		}
529
530	<	public void testElement(){
531	<	DelayQueue q = fullQueue(N);
532	<	for (int i = 0; i < N; ++i) {
530	>	/**
531	>	* element returns next element, or throws NSEE if empty
532	>	*/
533	>	public void testElement() {
534	>	DelayQueue q = populatedQueue(SIZE);
535	>	for (int i = 0; i < SIZE; ++i) {
536		assertEquals(new PDelay(i), ((PDelay)q.element()));
537		q.poll();
538		}
539		try {
540		q.element();
541	<	fail("no such element");
542	<	}
460	<	catch (NoSuchElementException success) {}
541	>	shouldThrow();
542	>	} catch (NoSuchElementException success) {}
543		}
544
545	<	public void testRemove(){
546	<	DelayQueue q = fullQueue(N);
547	<	for (int i = 0; i < N; ++i) {
545	>	/**
546	>	* remove removes next element, or throws NSEE if empty
547	>	*/
548	>	public void testRemove() {
549	>	DelayQueue q = populatedQueue(SIZE);
550	>	for (int i = 0; i < SIZE; ++i) {
551		assertEquals(new PDelay(i), ((PDelay)q.remove()));
552		}
553		try {
554		q.remove();
555	<	fail("remove should throw");
556	<	} catch (NoSuchElementException success){
472	<	}
555	>	shouldThrow();
556	>	} catch (NoSuchElementException success) {}
557		}
558
559	<	public void testRemoveElement(){
560	<	DelayQueue q = fullQueue(N);
561	<	for (int i = 1; i < N; i+=2) {
559	>	/**
560	>	* remove(x) removes x and returns true if present
561	>	*/
562	>	public void testRemoveElement() {
563	>	DelayQueue q = populatedQueue(SIZE);
564	>	for (int i = 1; i < SIZE; i+=2) {
565		assertTrue(q.remove(new PDelay(i)));
566		}
567	<	for (int i = 0; i < N; i+=2) {
567	>	for (int i = 0; i < SIZE; i+=2) {
568		assertTrue(q.remove(new PDelay(i)));
569		assertFalse(q.remove(new PDelay(i+1)));
570		}
571	<	assert(q.isEmpty());
571	>	assertTrue(q.isEmpty());
572		}
573	<
574	<	public void testContains(){
575	<	DelayQueue q = fullQueue(N);
576	<	for (int i = 0; i < N; ++i) {
573	>
574	>	/**
575	>	* contains(x) reports true when elements added but not yet removed
576	>	*/
577	>	public void testContains() {
578	>	DelayQueue q = populatedQueue(SIZE);
579	>	for (int i = 0; i < SIZE; ++i) {
580		assertTrue(q.contains(new PDelay(i)));
581		q.poll();
582		assertFalse(q.contains(new PDelay(i)));
583		}
584		}
585
586	<	public void testClear(){
587	<	DelayQueue q = fullQueue(N);
586	>	/**
587	>	* clear removes all elements
588	>	*/
589	>	public void testClear() {
590	>	DelayQueue q = populatedQueue(SIZE);
591		q.clear();
592		assertTrue(q.isEmpty());
593		assertEquals(0, q.size());
594		assertEquals(NOCAP, q.remainingCapacity());
595	<	q.add(new PDelay(1));
595	>	PDelay x = new PDelay(1);
596	>	q.add(x);
597		assertFalse(q.isEmpty());
598	+	assertTrue(q.contains(x));
599		q.clear();
600		assertTrue(q.isEmpty());
601		}
602
603	<	public void testContainsAll(){
604	<	DelayQueue q = fullQueue(N);
603	>	/**
604	>	* containsAll(c) is true when c contains a subset of elements
605	>	*/
606	>	public void testContainsAll() {
607	>	DelayQueue q = populatedQueue(SIZE);
608		DelayQueue p = new DelayQueue();
609	<	for (int i = 0; i < N; ++i) {
609	>	for (int i = 0; i < SIZE; ++i) {
610		assertTrue(q.containsAll(p));
611		assertFalse(p.containsAll(q));
612		p.add(new PDelay(i));
#	Line 516 | Line 614 | public class DelayQueueTest extends Test
614		assertTrue(p.containsAll(q));
615		}
616
617	<	public void testRetainAll(){
618	<	DelayQueue q = fullQueue(N);
619	<	DelayQueue p = fullQueue(N);
620	<	for (int i = 0; i < N; ++i) {
617	>	/**
618	>	* retainAll(c) retains only those elements of c and reports true if changed
619	>	*/
620	>	public void testRetainAll() {
621	>	DelayQueue q = populatedQueue(SIZE);
622	>	DelayQueue p = populatedQueue(SIZE);
623	>	for (int i = 0; i < SIZE; ++i) {
624		boolean changed = q.retainAll(p);
625		if (i == 0)
626		assertFalse(changed);
#	Line 527 | Line 628 | public class DelayQueueTest extends Test
628		assertTrue(changed);
629
630		assertTrue(q.containsAll(p));
631	<	assertEquals(N-i, q.size());
631	>	assertEquals(SIZE-i, q.size());
632		p.remove();
633		}
634		}
635
636	<	public void testRemoveAll(){
637	<	for (int i = 1; i < N; ++i) {
638	<	DelayQueue q = fullQueue(N);
639	<	DelayQueue p = fullQueue(i);
636	>	/**
637	>	* removeAll(c) removes only those elements of c and reports true if changed
638	>	*/
639	>	public void testRemoveAll() {
640	>	for (int i = 1; i < SIZE; ++i) {
641	>	DelayQueue q = populatedQueue(SIZE);
642	>	DelayQueue p = populatedQueue(i);
643		assertTrue(q.removeAll(p));
644	<	assertEquals(N-i, q.size());
644	>	assertEquals(SIZE-i, q.size());
645		for (int j = 0; j < i; ++j) {
646		PDelay I = (PDelay)(p.remove());
647		assertFalse(q.contains(I));
#	Line 545 | Line 649 | public class DelayQueueTest extends Test
649		}
650		}
651
652	<	/*
653	<	public void testEqualsAndHashCode(){
654	<	DelayQueue q1 = fullQueue(N);
655	<	DelayQueue q2 = fullQueue(N);
656	<	assertTrue(q1.equals(q2));
657	<	assertTrue(q2.equals(q1));
554	<	assertEquals(q1.hashCode(), q2.hashCode());
555	<	q1.remove();
556	<	assertFalse(q1.equals(q2));
557	<	assertFalse(q2.equals(q1));
558	<	assertFalse(q1.hashCode() == q2.hashCode());
559	<	q2.remove();
560	<	assertTrue(q1.equals(q2));
561	<	assertTrue(q2.equals(q1));
562	<	assertEquals(q1.hashCode(), q2.hashCode());
563	<	}
564	<	*/
565	<
566	<	public void testToArray(){
567	<	DelayQueue q = fullQueue(N);
568	<	Object[] o = q.toArray();
652	>	/**
653	>	* toArray contains all elements
654	>	*/
655	>	public void testToArray() throws InterruptedException {
656	>	DelayQueue q = populatedQueue(SIZE);
657	>	Object[] o = q.toArray();
658		Arrays.sort(o);
659	<	try {
660	<	for(int i = 0; i < o.length; i++)
572	<	assertEquals(o[i], q.take());
573	<	} catch (InterruptedException e){
574	<	fail("Unexpected exception");
575	<	}
659	>	for (int i = 0; i < o.length; i++)
660	>	assertEquals(o[i], q.take());
661		}
662
663	<	public void testToArray2(){
664	<	DelayQueue q = fullQueue(N);
665	<	PDelay[] ints = new PDelay[N];
666	<	ints = (PDelay[])q.toArray(ints);
663	>	/**
664	>	* toArray(a) contains all elements
665	>	*/
666	>	public void testToArray2() throws InterruptedException {
667	>	DelayQueue q = populatedQueue(SIZE);
668	>	PDelay[] ints = new PDelay[SIZE];
669	>	ints = (PDelay[])q.toArray(ints);
670		Arrays.sort(ints);
671	<	try {
672	<	for(int i = 0; i < ints.length; i++)
673	<	assertEquals(ints[i], q.take());
674	<	} catch (InterruptedException e){
675	<	fail("Unexpected exception");
676	<	}
677	<	}
678	<
679	<	public void testIterator(){
680	<	DelayQueue q = fullQueue(N);
671	>	for (int i = 0; i < ints.length; i++)
672	>	assertEquals(ints[i], q.take());
673	>	}
674	>
675	>
676	>	/**
677	>	* toArray(null) throws NPE
678	>	*/
679	>	public void testToArray_BadArg() {
680	>	try {
681	>	DelayQueue q = populatedQueue(SIZE);
682	>	Object o[] = q.toArray(null);
683	>	shouldThrow();
684	>	} catch (NullPointerException success) {}
685	>	}
686	>
687	>	/**
688	>	* toArray with incompatible array type throws CCE
689	>	*/
690	>	public void testToArray1_BadArg() {
691	>	try {
692	>	DelayQueue q = populatedQueue(SIZE);
693	>	Object o[] = q.toArray(new String[10] );
694	>	shouldThrow();
695	>	} catch (ArrayStoreException success) {}
696	>	}
697	>
698	>	/**
699	>	* iterator iterates through all elements
700	>	*/
701	>	public void testIterator() {
702	>	DelayQueue q = populatedQueue(SIZE);
703		int i = 0;
704	<	Iterator it = q.iterator();
705	<	while(it.hasNext()) {
704	>	Iterator it = q.iterator();
705	>	while (it.hasNext()) {
706		assertTrue(q.contains(it.next()));
707		++i;
708		}
709	<	assertEquals(i, N);
709	>	assertEquals(i, SIZE);
710		}
711
712	+	/**
713	+	* iterator.remove removes current element
714	+	*/
715		public void testIteratorRemove () {
603	–
716		final DelayQueue q = new DelayQueue();
605	–
717		q.add(new PDelay(2));
718		q.add(new PDelay(1));
719		q.add(new PDelay(3));
609	–
720		Iterator it = q.iterator();
721		it.next();
722		it.remove();
613	–
723		it = q.iterator();
724		assertEquals(it.next(), new PDelay(2));
725		assertEquals(it.next(), new PDelay(3));
#	Line 618 | Line 727 | public class DelayQueueTest extends Test
727		}
728
729
730	<	public void testToString(){
731	<	DelayQueue q = fullQueue(N);
730	>	/**
731	>	* toString contains toStrings of elements
732	>	*/
733	>	public void testToString() {
734	>	DelayQueue q = populatedQueue(SIZE);
735		String s = q.toString();
736	<	for (int i = 0; i < N; ++i) {
737	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
736	>	for (int i = 0; i < SIZE; ++i) {
737	>	assertTrue(s.indexOf(String.valueOf(Integer.MIN_VALUE+i)) >= 0);
738		}
739	<	}
739	>	}
740
741	+	/**
742	+	* offer transfers elements across Executor tasks
743	+	*/
744		public void testPollInExecutor() {
630	–
745		final DelayQueue q = new DelayQueue();
632	–
746		ExecutorService executor = Executors.newFixedThreadPool(2);
747	+	executor.execute(new CheckedRunnable() {
748	+	public void realRun() throws InterruptedException {
749	+	threadAssertNull(q.poll());
750	+	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
751	+	threadAssertTrue(q.isEmpty());
752	+	}});
753	+
754	+	executor.execute(new CheckedRunnable() {
755	+	public void realRun() throws InterruptedException {
756	+	Thread.sleep(SHORT_DELAY_MS);
757	+	q.put(new PDelay(1));
758	+	}});
759
760	<	executor.execute(new Runnable() {
636	<	public void run() {
637	<	assertNull("poll should fail", q.poll());
638	<	try {
639	<	assertTrue(null != q.poll(MEDIUM_DELAY_MS * 2, TimeUnit.MILLISECONDS));
640	<	assertTrue(q.isEmpty());
641	<	}
642	<	catch (InterruptedException e) {
643	<	fail("should not be interrupted");
644	<	}
645	<	}
646	<	});
647	<
648	<	executor.execute(new Runnable() {
649	<	public void run() {
650	<	try {
651	<	Thread.sleep(MEDIUM_DELAY_MS);
652	<	q.put(new PDelay(1));
653	<	}
654	<	catch (InterruptedException e) {
655	<	fail("should not be interrupted");
656	<	}
657	<	}
658	<	});
659	<
660	<	executor.shutdown();
760	>	joinPool(executor);
761
762		}
763
764	<	static class NanoDelay implements Delayed {
765	<	long trigger;
766	<	NanoDelay(long i) {
767	<	trigger = System.nanoTime() + i;
764	>
765	>	/**
766	>	* Delayed actions do not occur until their delay elapses
767	>	*/
768	>	public void testDelay() throws InterruptedException {
769	>	DelayQueue q = new DelayQueue();
770	>	NanoDelay[] elements = new NanoDelay[SIZE];
771	>	for (int i = 0; i < SIZE; ++i) {
772	>	elements[i] = new NanoDelay(1000000000L + 1000000L * (SIZE - i));
773		}
774	<	public int compareTo(Object y) {
775	<	long i = trigger;
671	<	long j = ((NanoDelay)y).trigger;
672	<	if (i < j) return -1;
673	<	if (i > j) return 1;
674	<	return 0;
774	>	for (int i = 0; i < SIZE; ++i) {
775	>	q.add(elements[i]);
776		}
777
778	<	public int compareTo(NanoDelay y) {
779	<	long i = trigger;
780	<	long j = ((NanoDelay)y).trigger;
781	<	if (i < j) return -1;
782	<	if (i > j) return 1;
783	<	return 0;
778	>	long last = 0;
779	>	for (int i = 0; i < SIZE; ++i) {
780	>	NanoDelay e = (NanoDelay)(q.take());
781	>	long tt = e.getTriggerTime();
782	>	assertTrue(tt <= System.nanoTime());
783	>	if (i != 0)
784	>	assertTrue(tt >= last);
785	>	last = tt;
786		}
787	+	}
788
789	<	public boolean equals(Object other) {
790	<	return ((NanoDelay)other).trigger == trigger;
791	<	}
792	<	public boolean equals(NanoDelay other) {
793	<	return ((NanoDelay)other).trigger == trigger;
794	<	}
789	>	/**
790	>	* peek of a non-empty queue returns non-null even if not expired
791	>	*/
792	>	public void testPeekDelayed() {
793	>	DelayQueue q = new DelayQueue();
794	>	q.add(new NanoDelay(Long.MAX_VALUE));
795	>	assert(q.peek() != null);
796	>	}
797
692	–	public long getDelay(TimeUnit unit) {
693	–	long n = trigger - System.nanoTime();
694	–	return unit.convert(n, TimeUnit.NANOSECONDS);
695	–	}
798
799	<	public long getTriggerTime() {
800	<	return trigger;
801	<	}
799	>	/**
800	>	* poll of a non-empty queue returns null if no expired elements.
801	>	*/
802	>	public void testPollDelayed() {
803	>	DelayQueue q = new DelayQueue();
804	>	q.add(new NanoDelay(Long.MAX_VALUE));
805	>	assertNull(q.poll());
806	>	}
807
808	<	public String toString() {
809	<	return String.valueOf(trigger);
810	<	}
808	>	/**
809	>	* timed poll of a non-empty queue returns null if no expired elements.
810	>	*/
811	>	public void testTimedPollDelayed() throws InterruptedException {
812	>	DelayQueue q = new DelayQueue();
813	>	q.add(new NanoDelay(LONG_DELAY_MS * 1000000L));
814	>	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
815	>	}
816	>
817	>	/**
818	>	* drainTo(null) throws NPE
819	>	*/
820	>	public void testDrainToNull() {
821	>	DelayQueue q = populatedQueue(SIZE);
822	>	try {
823	>	q.drainTo(null);
824	>	shouldThrow();
825	>	} catch (NullPointerException success) {}
826	>	}
827	>
828	>	/**
829	>	* drainTo(this) throws IAE
830	>	*/
831	>	public void testDrainToSelf() {
832	>	DelayQueue q = populatedQueue(SIZE);
833	>	try {
834	>	q.drainTo(q);
835	>	shouldThrow();
836	>	} catch (IllegalArgumentException success) {}
837		}
838
839	<	public void testDelay() {
839	>	/**
840	>	* drainTo(c) empties queue into another collection c
841	>	*/
842	>	public void testDrainTo() {
843		DelayQueue q = new DelayQueue();
844	<	NanoDelay[] elements = new NanoDelay[N];
845	<	for (int i = 0; i < N; ++i) {
846	<	elements[i] = new NanoDelay(1000000000L + 1000000L * (N - i));
847	<	}
848	<	for (int i = 0; i < N; ++i) {
849	<	q.add(elements[i]);
850	<	}
844	>	PDelay[] elems = new PDelay[SIZE];
845	>	for (int i = 0; i < SIZE; ++i) {
846	>	elems[i] = new PDelay(i);
847	>	q.add(elems[i]);
848	>	}
849	>	ArrayList l = new ArrayList();
850	>	q.drainTo(l);
851	>	assertEquals(q.size(), 0);
852	>	for (int i = 0; i < SIZE; ++i)
853	>	assertEquals(l.get(i), elems[i]);
854	>	q.add(elems[0]);
855	>	q.add(elems[1]);
856	>	assertFalse(q.isEmpty());
857	>	assertTrue(q.contains(elems[0]));
858	>	assertTrue(q.contains(elems[1]));
859	>	l.clear();
860	>	q.drainTo(l);
861	>	assertEquals(q.size(), 0);
862	>	assertEquals(l.size(), 2);
863	>	for (int i = 0; i < 2; ++i)
864	>	assertEquals(l.get(i), elems[i]);
865	>	}
866
867	+	/**
868	+	* drainTo empties queue
869	+	*/
870	+	public void testDrainToWithActivePut() throws InterruptedException {
871	+	final DelayQueue q = populatedQueue(SIZE);
872	+	Thread t = new Thread(new CheckedRunnable() {
873	+	public void realRun() {
874	+	q.put(new PDelay(SIZE+1));
875	+	}});
876	+
877	+	t.start();
878	+	ArrayList l = new ArrayList();
879	+	q.drainTo(l);
880	+	assertTrue(l.size() >= SIZE);
881	+	t.join();
882	+	assertTrue(q.size() + l.size() >= SIZE);
883	+	}
884	+
885	+	/**
886	+	* drainTo(null, n) throws NPE
887	+	*/
888	+	public void testDrainToNullN() {
889	+	DelayQueue q = populatedQueue(SIZE);
890		try {
891	<	long last = 0;
892	<	for (int i = 0; i < N; ++i) {
893	<	NanoDelay e = (NanoDelay)(q.take());
894	<	long tt = e.getTriggerTime();
895	<	assertTrue(tt <= System.nanoTime());
896	<	if (i != 0)
897	<	assertTrue(tt >= last);
898	<	last = tt;
899	<	}
900	<	}
901	<	catch(InterruptedException ie) {
902	<	fail("Unexpected Exception");
891	>	q.drainTo(null, 0);
892	>	shouldThrow();
893	>	} catch (NullPointerException success) {}
894	>	}
895	>
896	>	/**
897	>	* drainTo(this, n) throws IAE
898	>	*/
899	>	public void testDrainToSelfN() {
900	>	DelayQueue q = populatedQueue(SIZE);
901	>	try {
902	>	q.drainTo(q, 0);
903	>	shouldThrow();
904	>	} catch (IllegalArgumentException success) {}
905	>	}
906	>
907	>	/**
908	>	* drainTo(c, n) empties first max {n, size} elements of queue into c
909	>	*/
910	>	public void testDrainToN() {
911	>	for (int i = 0; i < SIZE + 2; ++i) {
912	>	DelayQueue q = populatedQueue(SIZE);
913	>	ArrayList l = new ArrayList();
914	>	q.drainTo(l, i);
915	>	int k = (i < SIZE)? i : SIZE;
916	>	assertEquals(q.size(), SIZE-k);
917	>	assertEquals(l.size(), k);
918		}
919		}
920
921	+
922		}

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