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Comparing jsr166/src/test/tck/SynchronousQueueTest.java (file contents):
Revision 1.5 by dl, Thu Sep 25 11:02:41 2003 UTC vs.
Revision 1.20 by jsr166, Tue Dec 1 09:48:12 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 java.util.concurrent.*;
12	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
13		import java.io.*;
14
15		public class SynchronousQueueTest extends JSR166TestCase {
16
17		public static void main(String[] args) {
18	<	junit.textui.TestRunner.run (suite());
18	>	junit.textui.TestRunner.run (suite());
19		}
20
21		public static Test suite() {
22	<	return new TestSuite(SynchronousQueueTest.class);
22	>	return new TestSuite(SynchronousQueueTest.class);
23		}
24
25		/**
#	Line 26 | Line 28 | public class SynchronousQueueTest extend
28		public void testEmptyFull() {
29		SynchronousQueue q = new SynchronousQueue();
30		assertTrue(q.isEmpty());
31	<	assertEquals(0, q.size());
31	>	assertEquals(0, q.size());
32	>	assertEquals(0, q.remainingCapacity());
33	>	assertFalse(q.offer(zero));
34	>	}
35	>
36	>	/**
37	>	* A fair SynchronousQueue is both empty and full
38	>	*/
39	>	public void testFairEmptyFull() {
40	>	SynchronousQueue q = new SynchronousQueue(true);
41	>	assertTrue(q.isEmpty());
42	>	assertEquals(0, q.size());
43		assertEquals(0, q.remainingCapacity());
44		assertFalse(q.offer(zero));
45		}
#	Line 35 | Line 48 | public class SynchronousQueueTest extend
48		* offer(null) throws NPE
49		*/
50		public void testOfferNull() {
51	<	try {
51	>	try {
52		SynchronousQueue q = new SynchronousQueue();
53		q.offer(null);
54		shouldThrow();
55	<	} catch (NullPointerException success) { }
55	>	} catch (NullPointerException success) {}
56	>	}
57	>
58	>	/**
59	>	* add(null) throws NPE
60	>	*/
61	>	public void testAddNull() {
62	>	try {
63	>	SynchronousQueue q = new SynchronousQueue();
64	>	q.add(null);
65	>	shouldThrow();
66	>	} catch (NullPointerException success) {}
67		}
68
69		/**
#	Line 54 | Line 78 | public class SynchronousQueueTest extend
78		* add throws ISE if no active taker
79		*/
80		public void testAdd() {
81	<	try {
81	>	try {
82		SynchronousQueue q = new SynchronousQueue();
83		assertEquals(0, q.remainingCapacity());
84		q.add(one);
85		shouldThrow();
86	<	} catch (IllegalStateException success){
63	<	}
86	>	} catch (IllegalStateException success) {}
87		}
88
89		/**
#	Line 71 | Line 94 | public class SynchronousQueueTest extend
94		SynchronousQueue q = new SynchronousQueue();
95		q.addAll(null);
96		shouldThrow();
97	<	}
98	<	catch (NullPointerException success) {}
97	>	} catch (NullPointerException success) {}
98	>	}
99	>
100	>	/**
101	>	* addAll(this) throws IAE
102	>	*/
103	>	public void testAddAllSelf() {
104	>	try {
105	>	SynchronousQueue q = new SynchronousQueue();
106	>	q.addAll(q);
107	>	shouldThrow();
108	>	} catch (IllegalArgumentException success) {}
109		}
110	+
111		/**
112		* addAll of a collection with null elements throws NPE
113		*/
#	Line 83 | Line 117 | public class SynchronousQueueTest extend
117		Integer[] ints = new Integer[1];
118		q.addAll(Arrays.asList(ints));
119		shouldThrow();
120	<	}
87	<	catch (NullPointerException success) {}
120	>	} catch (NullPointerException success) {}
121		}
122		/**
123		* addAll throws ISE if no active taker
#	Line 97 | Line 130 | public class SynchronousQueueTest extend
130		ints[i] = new Integer(i);
131		q.addAll(Arrays.asList(ints));
132		shouldThrow();
133	<	}
101	<	catch (IllegalStateException success) {}
133	>	} catch (IllegalStateException success) {}
134		}
135
136		/**
137		* put(null) throws NPE
138		*/
139	<	public void testPutNull() {
140	<	try {
139	>	public void testPutNull() throws InterruptedException {
140	>	try {
141		SynchronousQueue q = new SynchronousQueue();
142		q.put(null);
143		shouldThrow();
144	<	}
113	<	catch (NullPointerException success){
114	<	}
115	<	catch (InterruptedException ie) {
116	<	unexpectedException();
117	<	}
144	>	} catch (NullPointerException success) {}
145		}
146
147		/**
148		* put blocks interruptibly if no active taker
149		*/
150	<	public void testBlockingPut() {
151	<	Thread t = new Thread(new Runnable() {
152	<	public void run() {
153	<	try {
154	<	SynchronousQueue q = new SynchronousQueue();
155	<	q.put(zero);
156	<	threadShouldThrow();
157	<	} catch (InterruptedException ie){
158	<	}
159	<	}});
160	<	t.start();
134	<	try {
135	<	Thread.sleep(SHORT_DELAY_MS);
136	<	t.interrupt();
137	<	t.join();
138	<	}
139	<	catch (InterruptedException ie) {
140	<	unexpectedException();
141	<	}
150	>	public void testBlockingPut() throws InterruptedException {
151	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
152	>	public void realRun() throws InterruptedException {
153	>	SynchronousQueue q = new SynchronousQueue();
154	>	q.put(zero);
155	>	}});
156	>
157	>	t.start();
158	>	Thread.sleep(SHORT_DELAY_MS);
159	>	t.interrupt();
160	>	t.join();
161		}
162
163		/**
164	<	* put blocks waiting for take
164	>	* put blocks waiting for take
165		*/
166	<	public void testPutWithTake() {
166	>	public void testPutWithTake() throws InterruptedException {
167		final SynchronousQueue q = new SynchronousQueue();
168	<	Thread t = new Thread(new Runnable() {
169	<	public void run() {
170	<	int added = 0;
171	<	try {
172	<	q.put(new Object());
173	<	++added;
155	<	q.put(new Object());
156	<	++added;
157	<	q.put(new Object());
158	<	++added;
159	<	q.put(new Object());
168	>	Thread t = new Thread(new CheckedRunnable() {
169	>	public void realRun() throws InterruptedException {
170	>	int added = 0;
171	>	try {
172	>	while (true) {
173	>	q.put(added);
174		++added;
161	–	threadShouldThrow();
162	–	} catch (InterruptedException e){
163	–	assertTrue(added >= 1);
175		}
176	+	} catch (InterruptedException success) {
177	+	assertTrue(added == 1);
178		}
179	<	});
180	<	try {
181	<	t.start();
182	<	Thread.sleep(SHORT_DELAY_MS);
183	<	q.take();
184	<	Thread.sleep(SHORT_DELAY_MS);
185	<	t.interrupt();
186	<	t.join();
174	<	} catch (Exception e){
175	<	unexpectedException();
176	<	}
179	>	}});
180	>
181	>	t.start();
182	>	Thread.sleep(SHORT_DELAY_MS);
183	>	assertEquals(0, q.take());
184	>	Thread.sleep(SHORT_DELAY_MS);
185	>	t.interrupt();
186	>	t.join();
187		}
188
189		/**
190		* timed offer times out if elements not taken
191		*/
192	<	public void testTimedOffer() {
192	>	public void testTimedOffer() throws InterruptedException {
193		final SynchronousQueue q = new SynchronousQueue();
194	<	Thread t = new Thread(new Runnable() {
195	<	public void run() {
196	<	try {
197	<
198	<	threadAssertFalse(q.offer(new Object(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
199	<	q.offer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS);
200	<	threadShouldThrow();
201	<	} catch (InterruptedException success){}
202	<	}
203	<	});
194	<
195	<	try {
196	<	t.start();
197	<	Thread.sleep(SMALL_DELAY_MS);
198	<	t.interrupt();
199	<	t.join();
200	<	} catch (Exception e){
201	<	unexpectedException();
202	<	}
194	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
195	>	public void realRun() throws InterruptedException {
196	>	assertFalse(q.offer(new Object(), SHORT_DELAY_MS, MILLISECONDS));
197	>	q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS);
198	>	}});
199	>
200	>	t.start();
201	>	Thread.sleep(SMALL_DELAY_MS);
202	>	t.interrupt();
203	>	t.join();
204		}
205
206
207		/**
208		* take blocks interruptibly when empty
209		*/
210	<	public void testTakeFromEmpty() {
210	>	public void testTakeFromEmpty() throws InterruptedException {
211		final SynchronousQueue q = new SynchronousQueue();
212	<	Thread t = new Thread(new Runnable() {
213	<	public void run() {
214	<	try {
215	<	q.take();
216	<	threadShouldThrow();
217	<	} catch (InterruptedException success){ }
212	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
213	>	public void realRun() throws InterruptedException {
214	>	q.take();
215	>	}});
216	>
217	>	t.start();
218	>	Thread.sleep(SHORT_DELAY_MS);
219	>	t.interrupt();
220	>	t.join();
221	>	}
222	>
223	>
224	>	/**
225	>	* put blocks interruptibly if no active taker
226	>	*/
227	>	public void testFairBlockingPut() throws InterruptedException {
228	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
229	>	public void realRun() throws InterruptedException {
230	>	SynchronousQueue q = new SynchronousQueue(true);
231	>	q.put(zero);
232	>	}});
233	>
234	>	t.start();
235	>	Thread.sleep(SHORT_DELAY_MS);
236	>	t.interrupt();
237	>	t.join();
238	>	}
239	>
240	>	/**
241	>	* put blocks waiting for take
242	>	*/
243	>	public void testFairPutWithTake() throws InterruptedException {
244	>	final SynchronousQueue q = new SynchronousQueue(true);
245	>	Thread t = new Thread(new CheckedRunnable() {
246	>	public void realRun() throws InterruptedException {
247	>	int added = 0;
248	>	try {
249	>	while (true) {
250	>	q.put(added);
251	>	++added;
252	>	}
253	>	} catch (InterruptedException success) {
254	>	assertTrue(added == 1);
255		}
256	<	});
257	<	try {
258	<	t.start();
259	<	Thread.sleep(SHORT_DELAY_MS);
260	<	t.interrupt();
261	<	t.join();
262	<	} catch (Exception e){
263	<	unexpectedException();
264	<	}
256	>	}});
257	>
258	>	t.start();
259	>	Thread.sleep(SHORT_DELAY_MS);
260	>	assertEquals(0, q.take());
261	>	Thread.sleep(SHORT_DELAY_MS);
262	>	t.interrupt();
263	>	t.join();
264	>	}
265	>
266	>	/**
267	>	* timed offer times out if elements not taken
268	>	*/
269	>	public void testFairTimedOffer() throws InterruptedException {
270	>	final SynchronousQueue q = new SynchronousQueue(true);
271	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
272	>	public void realRun() throws InterruptedException {
273	>	assertFalse(q.offer(new Object(), SHORT_DELAY_MS, MILLISECONDS));
274	>	q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS);
275	>	}});
276	>
277	>	t.start();
278	>	Thread.sleep(SMALL_DELAY_MS);
279	>	t.interrupt();
280	>	t.join();
281	>	}
282	>
283	>
284	>	/**
285	>	* take blocks interruptibly when empty
286	>	*/
287	>	public void testFairTakeFromEmpty() throws InterruptedException {
288	>	final SynchronousQueue q = new SynchronousQueue(true);
289	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
290	>	public void realRun() throws InterruptedException {
291	>	q.take();
292	>	}});
293	>
294	>	t.start();
295	>	Thread.sleep(SHORT_DELAY_MS);
296	>	t.interrupt();
297	>	t.join();
298		}
299
300		/**
#	Line 231 | Line 302 | public class SynchronousQueueTest extend
302		*/
303		public void testPoll() {
304		SynchronousQueue q = new SynchronousQueue();
305	<	assertNull(q.poll());
305	>	assertNull(q.poll());
306		}
307
308		/**
309		* timed pool with zero timeout times out if no active taker
310		*/
311	<	public void testTimedPoll0() {
312	<	try {
313	<	SynchronousQueue q = new SynchronousQueue();
243	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
244	<	} catch (InterruptedException e){
245	<	unexpectedException();
246	<	}
311	>	public void testTimedPoll0() throws InterruptedException {
312	>	SynchronousQueue q = new SynchronousQueue();
313	>	assertNull(q.poll(0, MILLISECONDS));
314		}
315
316		/**
317		* timed pool with nonzero timeout times out if no active taker
318		*/
319	<	public void testTimedPoll() {
320	<	try {
321	<	SynchronousQueue q = new SynchronousQueue();
255	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
256	<	} catch (InterruptedException e){
257	<	unexpectedException();
258	<	}
319	>	public void testTimedPoll() throws InterruptedException {
320	>	SynchronousQueue q = new SynchronousQueue();
321	>	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
322		}
323
324		/**
325		* Interrupted timed poll throws InterruptedException instead of
326		* returning timeout status
327		*/
328	<	public void testInterruptedTimedPoll() {
329	<	Thread t = new Thread(new Runnable() {
330	<	public void run() {
331	<	try {
332	<	SynchronousQueue q = new SynchronousQueue();
333	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
334	<	} catch (InterruptedException success){
335	<	}
336	<	}});
337	<	t.start();
338	<	try {
276	<	Thread.sleep(SHORT_DELAY_MS);
277	<	t.interrupt();
278	<	t.join();
279	<	}
280	<	catch (InterruptedException ie) {
281	<	unexpectedException();
282	<	}
328	>	public void testInterruptedTimedPoll() throws InterruptedException {
329	>	final SynchronousQueue q = new SynchronousQueue();
330	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
331	>	public void realRun() throws InterruptedException {
332	>	q.poll(SMALL_DELAY_MS, MILLISECONDS);
333	>	}});
334	>
335	>	t.start();
336	>	Thread.sleep(SHORT_DELAY_MS);
337	>	t.interrupt();
338	>	t.join();
339		}
340
341		/**
342		*  timed poll before a delayed offer fails; after offer succeeds;
343		*  on interruption throws
344		*/
345	<	public void testTimedPollWithOffer() {
345	>	public void testTimedPollWithOffer() throws InterruptedException {
346		final SynchronousQueue q = new SynchronousQueue();
347	<	Thread t = new Thread(new Runnable() {
348	<	public void run() {
349	<	try {
350	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
351	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
352	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
353	<	threadShouldThrow();
354	<	} catch (InterruptedException success) { }
355	<	}
356	<	});
357	<	try {
358	<	t.start();
359	<	Thread.sleep(SMALL_DELAY_MS);
360	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
361	<	t.interrupt();
362	<	t.join();
363	<	} catch (Exception e){
364	<	unexpectedException();
365	<	}
366	<	}
347	>	Thread t = new Thread(new CheckedRunnable() {
348	>	public void realRun() throws InterruptedException {
349	>	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
350	>	assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS));
351	>	try {
352	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
353	>	shouldThrow();
354	>	} catch (InterruptedException success) {}
355	>	}});
356	>
357	>	t.start();
358	>	Thread.sleep(SMALL_DELAY_MS);
359	>	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
360	>	t.interrupt();
361	>	t.join();
362	>	}
363	>
364	>	/**
365	>	* Interrupted timed poll throws InterruptedException instead of
366	>	* returning timeout status
367	>	*/
368	>	public void testFairInterruptedTimedPoll() throws InterruptedException {
369	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
370	>	public void realRun() throws InterruptedException {
371	>	SynchronousQueue q = new SynchronousQueue(true);
372	>	q.poll(SMALL_DELAY_MS, MILLISECONDS);
373	>	}});
374	>
375	>	t.start();
376	>	Thread.sleep(SHORT_DELAY_MS);
377	>	t.interrupt();
378	>	t.join();
379	>	}
380	>
381	>	/**
382	>	*  timed poll before a delayed offer fails; after offer succeeds;
383	>	*  on interruption throws
384	>	*/
385	>	public void testFairTimedPollWithOffer() throws InterruptedException {
386	>	final SynchronousQueue q = new SynchronousQueue(true);
387	>	Thread t = new Thread(new CheckedRunnable() {
388	>	public void realRun() throws InterruptedException {
389	>	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
390	>	assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS));
391	>	try {
392	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
393	>	threadShouldThrow();
394	>	} catch (InterruptedException success) {}
395	>	}});
396	>
397	>	t.start();
398	>	Thread.sleep(SMALL_DELAY_MS);
399	>	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
400	>	t.interrupt();
401	>	t.join();
402	>	}
403
404
405		/**
#	Line 315 | Line 407 | public class SynchronousQueueTest extend
407		*/
408		public void testPeek() {
409		SynchronousQueue q = new SynchronousQueue();
410	<	assertNull(q.peek());
410	>	assertNull(q.peek());
411		}
412
413		/**
#	Line 326 | Line 418 | public class SynchronousQueueTest extend
418		try {
419		q.element();
420		shouldThrow();
421	<	}
330	<	catch (NoSuchElementException success) {}
421	>	} catch (NoSuchElementException success) {}
422		}
423
424		/**
#	Line 338 | Line 429 | public class SynchronousQueueTest extend
429		try {
430		q.remove();
431		shouldThrow();
432	<	} catch (NoSuchElementException success){
342	<	}
432	>	} catch (NoSuchElementException success) {}
433		}
434
435		/**
#	Line 350 | Line 440 | public class SynchronousQueueTest extend
440		assertFalse(q.remove(zero));
441		assertTrue(q.isEmpty());
442		}
443	<
443	>
444		/**
445		* contains returns false
446		*/
#	Line 407 | Line 497 | public class SynchronousQueueTest extend
497		*/
498		public void testToArray() {
499		SynchronousQueue q = new SynchronousQueue();
500	<	Object[] o = q.toArray();
500	>	Object[] o = q.toArray();
501		assertEquals(o.length, 0);
502		}
503
#	Line 416 | Line 506 | public class SynchronousQueueTest extend
506		*/
507		public void testToArray2() {
508		SynchronousQueue q = new SynchronousQueue();
509	<	Integer[] ints = new Integer[1];
509	>	Integer[] ints = new Integer[1];
510		assertNull(ints[0]);
511		}
512	<
512	>
513	>	/**
514	>	* toArray(null) throws NPE
515	>	*/
516	>	public void testToArray_BadArg() {
517	>	SynchronousQueue q = new SynchronousQueue();
518	>	try {
519	>	Object o[] = q.toArray(null);
520	>	shouldThrow();
521	>	} catch (NullPointerException success) {}
522	>	}
523	>
524	>
525		/**
526		* iterator does not traverse any elements
527		*/
528		public void testIterator() {
529		SynchronousQueue q = new SynchronousQueue();
530	<	Iterator it = q.iterator();
530	>	Iterator it = q.iterator();
531		assertFalse(it.hasNext());
532		try {
533		Object x = it.next();
534		shouldThrow();
535	<	}
434	<	catch (NoSuchElementException success) {}
535	>	} catch (NoSuchElementException success) {}
536		}
537
538		/**
#	Line 439 | Line 540 | public class SynchronousQueueTest extend
540		*/
541		public void testIteratorRemove() {
542		SynchronousQueue q = new SynchronousQueue();
543	<	Iterator it = q.iterator();
543	>	Iterator it = q.iterator();
544		try {
545		it.remove();
546		shouldThrow();
547	<	}
447	<	catch (IllegalStateException success) {}
547	>	} catch (IllegalStateException success) {}
548		}
549
550		/**
#	Line 454 | Line 554 | public class SynchronousQueueTest extend
554		SynchronousQueue q = new SynchronousQueue();
555		String s = q.toString();
556		assertNotNull(s);
557	<	}
557	>	}
558
559
560		/**
#	Line 463 | Line 563 | public class SynchronousQueueTest extend
563		public void testOfferInExecutor() {
564		final SynchronousQueue q = new SynchronousQueue();
565		ExecutorService executor = Executors.newFixedThreadPool(2);
466	–	final Integer one = new Integer(1);
566
567	<	executor.execute(new Runnable() {
568	<	public void run() {
569	<	threadAssertFalse(q.offer(one));
570	<	try {
571	<	threadAssertTrue(q.offer(one, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
572	<	threadAssertEquals(0, q.remainingCapacity());
573	<	}
574	<	catch (InterruptedException e) {
575	<	threadUnexpectedException();
576	<	}
577	<	}
578	<	});
567	>	executor.execute(new CheckedRunnable() {
568	>	public void realRun() throws InterruptedException {
569	>	assertFalse(q.offer(one));
570	>	assertTrue(q.offer(one, MEDIUM_DELAY_MS, MILLISECONDS));
571	>	assertEquals(0, q.remainingCapacity());
572	>	}});
573	>
574	>	executor.execute(new CheckedRunnable() {
575	>	public void realRun() throws InterruptedException {
576	>	Thread.sleep(SMALL_DELAY_MS);
577	>	assertSame(one, q.take());
578	>	}});
579
481	–	executor.execute(new Runnable() {
482	–	public void run() {
483	–	try {
484	–	Thread.sleep(SMALL_DELAY_MS);
485	–	threadAssertEquals(one, q.take());
486	–	}
487	–	catch (InterruptedException e) {
488	–	threadUnexpectedException();
489	–	}
490	–	}
491	–	});
492	–
580		joinPool(executor);
494	–
581		}
582
583		/**
#	Line 500 | Line 586 | public class SynchronousQueueTest extend
586		public void testPollInExecutor() {
587		final SynchronousQueue q = new SynchronousQueue();
588		ExecutorService executor = Executors.newFixedThreadPool(2);
589	<	executor.execute(new Runnable() {
590	<	public void run() {
591	<	threadAssertNull(q.poll());
592	<	try {
593	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
594	<	threadAssertTrue(q.isEmpty());
595	<	}
596	<	catch (InterruptedException e) {
597	<	threadUnexpectedException();
598	<	}
599	<	}
600	<	});
589	>	executor.execute(new CheckedRunnable() {
590	>	public void realRun() throws InterruptedException {
591	>	assertNull(q.poll());
592	>	assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
593	>	assertTrue(q.isEmpty());
594	>	}});
595	>
596	>	executor.execute(new CheckedRunnable() {
597	>	public void realRun() throws InterruptedException {
598	>	Thread.sleep(SHORT_DELAY_MS);
599	>	q.put(one);
600	>	}});
601
516	–	executor.execute(new Runnable() {
517	–	public void run() {
518	–	try {
519	–	Thread.sleep(SMALL_DELAY_MS);
520	–	q.put(new Integer(1));
521	–	}
522	–	catch (InterruptedException e) {
523	–	threadUnexpectedException();
524	–	}
525	–	}
526	–	});
527	–
602		joinPool(executor);
603		}
604
605		/**
606		* a deserialized serialized queue is usable
607		*/
608	<	public void testSerialization() {
608	>	public void testSerialization() throws Exception {
609	>	SynchronousQueue q = new SynchronousQueue();
610	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
611	>	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
612	>	out.writeObject(q);
613	>	out.close();
614	>
615	>	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
616	>	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
617	>	SynchronousQueue r = (SynchronousQueue)in.readObject();
618	>	assertEquals(q.size(), r.size());
619	>	while (!q.isEmpty())
620	>	assertEquals(q.remove(), r.remove());
621	>	}
622	>
623	>	/**
624	>	* drainTo(null) throws NPE
625	>	*/
626	>	public void testDrainToNull() {
627	>	SynchronousQueue q = new SynchronousQueue();
628	>	try {
629	>	q.drainTo(null);
630	>	shouldThrow();
631	>	} catch (NullPointerException success) {}
632	>	}
633	>
634	>	/**
635	>	* drainTo(this) throws IAE
636	>	*/
637	>	public void testDrainToSelf() {
638		SynchronousQueue q = new SynchronousQueue();
639		try {
640	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
641	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
642	<	out.writeObject(q);
643	<	out.close();
644	<
645	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
646	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
647	<	SynchronousQueue r = (SynchronousQueue)in.readObject();
648	<	assertEquals(q.size(), r.size());
649	<	while (!q.isEmpty())
650	<	assertEquals(q.remove(), r.remove());
651	<	} catch(Exception e){
652	<	unexpectedException();
653	<	}
640	>	q.drainTo(q);
641	>	shouldThrow();
642	>	} catch (IllegalArgumentException success) {}
643	>	}
644	>
645	>	/**
646	>	* drainTo(c) of empty queue doesn't transfer elements
647	>	*/
648	>	public void testDrainTo() {
649	>	SynchronousQueue q = new SynchronousQueue();
650	>	ArrayList l = new ArrayList();
651	>	q.drainTo(l);
652	>	assertEquals(q.size(), 0);
653	>	assertEquals(l.size(), 0);
654	>	}
655	>
656	>	/**
657	>	* drainTo empties queue, unblocking a waiting put.
658	>	*/
659	>	public void testDrainToWithActivePut() throws InterruptedException {
660	>	final SynchronousQueue q = new SynchronousQueue();
661	>	Thread t = new Thread(new CheckedRunnable() {
662	>	public void realRun() throws InterruptedException {
663	>	q.put(new Integer(1));
664	>	}});
665	>
666	>	t.start();
667	>	ArrayList l = new ArrayList();
668	>	Thread.sleep(SHORT_DELAY_MS);
669	>	q.drainTo(l);
670	>	assertTrue(l.size() <= 1);
671	>	if (l.size() > 0)
672	>	assertEquals(l.get(0), new Integer(1));
673	>	t.join();
674	>	assertTrue(l.size() <= 1);
675	>	}
676	>
677	>	/**
678	>	* drainTo(null, n) throws NPE
679	>	*/
680	>	public void testDrainToNullN() {
681	>	SynchronousQueue q = new SynchronousQueue();
682	>	try {
683	>	q.drainTo(null, 0);
684	>	shouldThrow();
685	>	} catch (NullPointerException success) {}
686	>	}
687	>
688	>	/**
689	>	* drainTo(this, n) throws IAE
690	>	*/
691	>	public void testDrainToSelfN() {
692	>	SynchronousQueue q = new SynchronousQueue();
693	>	try {
694	>	q.drainTo(q, 0);
695	>	shouldThrow();
696	>	} catch (IllegalArgumentException success) {}
697	>	}
698	>
699	>	/**
700	>	* drainTo(c, n) empties up to n elements of queue into c
701	>	*/
702	>	public void testDrainToN() throws InterruptedException {
703	>	final SynchronousQueue q = new SynchronousQueue();
704	>	Thread t1 = new Thread(new CheckedRunnable() {
705	>	public void realRun() throws InterruptedException {
706	>	q.put(one);
707	>	}});
708	>
709	>	Thread t2 = new Thread(new CheckedRunnable() {
710	>	public void realRun() throws InterruptedException {
711	>	q.put(two);
712	>	}});
713	>
714	>	t1.start();
715	>	t2.start();
716	>	ArrayList l = new ArrayList();
717	>	Thread.sleep(SHORT_DELAY_MS);
718	>	q.drainTo(l, 1);
719	>	assertTrue(l.size() == 1);
720	>	q.drainTo(l, 1);
721	>	assertTrue(l.size() == 2);
722	>	assertTrue(l.contains(one));
723	>	assertTrue(l.contains(two));
724	>	t1.join();
725	>	t2.join();
726		}
727
728		}

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