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Comparing jsr166/src/test/tck/SynchronousQueueTest.java (file contents):
Revision 1.8 by dl, Sun Feb 15 00:27:45 2004 UTC vs.
Revision 1.32 by jsr166, Thu Apr 14 22:55:08 2011 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
5	<	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	<	* Pat Fisher, Mike Judd.
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.*;
12	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
13		import java.io.*;
14
15		public class SynchronousQueueTest extends JSR166TestCase {
16
17	+	public static class Fair extends BlockingQueueTest {
18	+	protected BlockingQueue emptyCollection() {
19	+	return new SynchronousQueue(true);
20	+	}
21	+	}
22	+
23	+	public static class NonFair extends BlockingQueueTest {
24	+	protected BlockingQueue emptyCollection() {
25	+	return new SynchronousQueue(false);
26	+	}
27	+	}
28	+
29		public static void main(String[] args) {
30	<	junit.textui.TestRunner.run (suite());
30	>	junit.textui.TestRunner.run(suite());
31		}
32
33		public static Test suite() {
34	<	return new TestSuite(SynchronousQueueTest.class);
34	>	return newTestSuite(SynchronousQueueTest.class,
35	>	new Fair().testSuite(),
36	>	new NonFair().testSuite());
37		}
38
39		/**
40	<	* A SynchronousQueue is both empty and full
40	>	* Any SynchronousQueue is both empty and full
41		*/
42	<	public void testEmptyFull() {
28	<	SynchronousQueue q = new SynchronousQueue();
42	>	public void testEmptyFull(SynchronousQueue q) {
43		assertTrue(q.isEmpty());
44	<	assertEquals(0, q.size());
44	>	assertEquals(0, q.size());
45		assertEquals(0, q.remainingCapacity());
46		assertFalse(q.offer(zero));
47		}
48
49		/**
50	+	* A non-fair SynchronousQueue is both empty and full
51	+	*/
52	+	public void testEmptyFull() {
53	+	testEmptyFull(new SynchronousQueue());
54	+	}
55	+
56	+	/**
57		* A fair SynchronousQueue is both empty and full
58		*/
59		public void testFairEmptyFull() {
60	<	SynchronousQueue q = new SynchronousQueue(true);
40	<	assertTrue(q.isEmpty());
41	<	assertEquals(0, q.size());
42	<	assertEquals(0, q.remainingCapacity());
43	<	assertFalse(q.offer(zero));
60	>	testEmptyFull(new SynchronousQueue(true));
61		}
62
63		/**
64		* offer(null) throws NPE
65		*/
66		public void testOfferNull() {
67	<	try {
67	>	try {
68		SynchronousQueue q = new SynchronousQueue();
69		q.offer(null);
70		shouldThrow();
71	<	} catch (NullPointerException success) { }
71	>	} catch (NullPointerException success) {}
72		}
73
74		/**
75		* add(null) throws NPE
76		*/
77		public void testAddNull() {
78	<	try {
78	>	try {
79		SynchronousQueue q = new SynchronousQueue();
80		q.add(null);
81		shouldThrow();
82	<	} catch (NullPointerException success) { }
82	>	} catch (NullPointerException success) {}
83		}
84
85		/**
#	Line 77 | Line 94 | public class SynchronousQueueTest extend
94		* add throws ISE if no active taker
95		*/
96		public void testAdd() {
97	<	try {
97	>	try {
98		SynchronousQueue q = new SynchronousQueue();
99		assertEquals(0, q.remainingCapacity());
100		q.add(one);
101		shouldThrow();
102	<	} catch (IllegalStateException success){
86	<	}
102	>	} catch (IllegalStateException success) {}
103		}
104
105		/**
#	Line 94 | Line 110 | public class SynchronousQueueTest extend
110		SynchronousQueue q = new SynchronousQueue();
111		q.addAll(null);
112		shouldThrow();
113	<	}
98	<	catch (NullPointerException success) {}
113	>	} catch (NullPointerException success) {}
114		}
115
116		/**
#	Line 106 | Line 121 | public class SynchronousQueueTest extend
121		SynchronousQueue q = new SynchronousQueue();
122		q.addAll(q);
123		shouldThrow();
124	<	}
110	<	catch (IllegalArgumentException success) {}
124	>	} catch (IllegalArgumentException success) {}
125		}
126
127		/**
#	Line 119 | Line 133 | public class SynchronousQueueTest extend
133		Integer[] ints = new Integer[1];
134		q.addAll(Arrays.asList(ints));
135		shouldThrow();
136	<	}
123	<	catch (NullPointerException success) {}
136	>	} catch (NullPointerException success) {}
137		}
138	+
139		/**
140		* addAll throws ISE if no active taker
141		*/
#	Line 133 | Line 147 | public class SynchronousQueueTest extend
147		ints[i] = new Integer(i);
148		q.addAll(Arrays.asList(ints));
149		shouldThrow();
150	<	}
137	<	catch (IllegalStateException success) {}
150	>	} catch (IllegalStateException success) {}
151		}
152
153		/**
154		* put(null) throws NPE
155		*/
156	<	public void testPutNull() {
157	<	try {
156	>	public void testPutNull() throws InterruptedException {
157	>	try {
158		SynchronousQueue q = new SynchronousQueue();
159		q.put(null);
160		shouldThrow();
161	<	}
162	<	catch (NullPointerException success){
150	<	}
151	<	catch (InterruptedException ie) {
152	<	unexpectedException();
153	<	}
154	<	}
161	>	} catch (NullPointerException success) {}
162	>	}
163
164		/**
165		* put blocks interruptibly if no active taker
166		*/
167	<	public void testBlockingPut() {
168	<	Thread t = new Thread(new Runnable() {
169	<	public void run() {
170	<	try {
171	<	SynchronousQueue q = new SynchronousQueue();
172	<	q.put(zero);
173	<	threadShouldThrow();
166	<	} catch (InterruptedException ie){
167	<	}
168	<	}});
167	>	public void testBlockingPut() throws InterruptedException {
168	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
169	>	public void realRun() throws InterruptedException {
170	>	SynchronousQueue q = new SynchronousQueue();
171	>	q.put(zero);
172	>	}});
173	>
174		t.start();
175	<	try {
176	<	Thread.sleep(SHORT_DELAY_MS);
177	<	t.interrupt();
173	<	t.join();
174	<	}
175	<	catch (InterruptedException ie) {
176	<	unexpectedException();
177	<	}
175	>	Thread.sleep(SHORT_DELAY_MS);
176	>	t.interrupt();
177	>	t.join();
178		}
179
180		/**
181	<	* put blocks waiting for take
181	>	* put blocks waiting for take
182		*/
183	<	public void testPutWithTake() {
183	>	public void testPutWithTake() throws InterruptedException {
184		final SynchronousQueue q = new SynchronousQueue();
185	<	Thread t = new Thread(new Runnable() {
186	<	public void run() {
187	<	int added = 0;
188	<	try {
189	<	q.put(new Object());
190	<	++added;
191	<	q.put(new Object());
192	<	++added;
193	<	q.put(new Object());
194	<	++added;
195	<	q.put(new Object());
185	>	Thread t = new Thread(new CheckedRunnable() {
186	>	public void realRun() throws InterruptedException {
187	>	int added = 0;
188	>	try {
189	>	while (true) {
190	>	q.put(added);
191		++added;
197	–	threadShouldThrow();
198	–	} catch (InterruptedException e){
199	–	assertTrue(added >= 1);
192		}
193	+	} catch (InterruptedException success) {
194	+	assertEquals(1, added);
195		}
196	<	});
197	<	try {
198	<	t.start();
199	<	Thread.sleep(SHORT_DELAY_MS);
200	<	q.take();
201	<	Thread.sleep(SHORT_DELAY_MS);
202	<	t.interrupt();
203	<	t.join();
210	<	} catch (Exception e){
211	<	unexpectedException();
212	<	}
196	>	}});
197	>
198	>	t.start();
199	>	Thread.sleep(SHORT_DELAY_MS);
200	>	assertEquals(0, q.take());
201	>	Thread.sleep(SHORT_DELAY_MS);
202	>	t.interrupt();
203	>	t.join();
204		}
205
206		/**
207		* timed offer times out if elements not taken
208		*/
209	<	public void testTimedOffer() {
210	<	final SynchronousQueue q = new SynchronousQueue();
211	<	Thread t = new Thread(new Runnable() {
212	<	public void run() {
213	<	try {
214	<
215	<	threadAssertFalse(q.offer(new Object(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
216	<	q.offer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS);
217	<	threadShouldThrow();
218	<	} catch (InterruptedException success){}
219	<	}
220	<	});
221	<
222	<	try {
223	<	t.start();
224	<	Thread.sleep(SMALL_DELAY_MS);
225	<	t.interrupt();
226	<	t.join();
227	<	} catch (Exception e){
228	<	unexpectedException();
238	<	}
209	>	public void testTimedOffer(final SynchronousQueue q)
210	>	throws InterruptedException {
211	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
212	>	Thread t = newStartedThread(new CheckedRunnable() {
213	>	public void realRun() throws InterruptedException {
214	>	long t0 = System.nanoTime();
215	>	assertFalse(q.offer(new Object(), SHORT_DELAY_MS, MILLISECONDS));
216	>	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
217	>	pleaseInterrupt.countDown();
218	>	t0 = System.nanoTime();
219	>	try {
220	>	q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS);
221	>	shouldThrow();
222	>	} catch (InterruptedException success) {}
223	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
224	>	}});
225	>
226	>	assertTrue(pleaseInterrupt.await(MEDIUM_DELAY_MS, MILLISECONDS));
227	>	t.interrupt();
228	>	awaitTermination(t, MEDIUM_DELAY_MS);
229		}
230
241	–
231		/**
232	<	* take blocks interruptibly when empty
232	>	* timed offer times out if elements not taken
233		*/
234	<	public void testTakeFromEmpty() {
235	<	final SynchronousQueue q = new SynchronousQueue();
247	<	Thread t = new Thread(new Runnable() {
248	<	public void run() {
249	<	try {
250	<	q.take();
251	<	threadShouldThrow();
252	<	} catch (InterruptedException success){ }
253	<	}
254	<	});
255	<	try {
256	<	t.start();
257	<	Thread.sleep(SHORT_DELAY_MS);
258	<	t.interrupt();
259	<	t.join();
260	<	} catch (Exception e){
261	<	unexpectedException();
262	<	}
234	>	public void testTimedOffer() throws InterruptedException {
235	>	testTimedOffer(new SynchronousQueue());
236		}
237
238	+	/**
239	+	* timed offer times out if elements not taken
240	+	*/
241	+	public void testFairTimedOffer() throws InterruptedException {
242	+	testTimedOffer(new SynchronousQueue(true));
243	+	}
244
245		/**
246		* put blocks interruptibly if no active taker
247		*/
248	<	public void testFairBlockingPut() {
249	<	Thread t = new Thread(new Runnable() {
250	<	public void run() {
251	<	try {
252	<	SynchronousQueue q = new SynchronousQueue(true);
253	<	q.put(zero);
254	<	threadShouldThrow();
276	<	} catch (InterruptedException ie){
277	<	}
278	<	}});
248	>	public void testFairBlockingPut() throws InterruptedException {
249	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
250	>	public void realRun() throws InterruptedException {
251	>	SynchronousQueue q = new SynchronousQueue(true);
252	>	q.put(zero);
253	>	}});
254	>
255		t.start();
256	<	try {
257	<	Thread.sleep(SHORT_DELAY_MS);
258	<	t.interrupt();
283	<	t.join();
284	<	}
285	<	catch (InterruptedException ie) {
286	<	unexpectedException();
287	<	}
256	>	Thread.sleep(SHORT_DELAY_MS);
257	>	t.interrupt();
258	>	t.join();
259		}
260
261		/**
262	<	* put blocks waiting for take
262	>	* put blocks waiting for take
263		*/
264	<	public void testFairPutWithTake() {
264	>	public void testFairPutWithTake() throws InterruptedException {
265		final SynchronousQueue q = new SynchronousQueue(true);
266	<	Thread t = new Thread(new Runnable() {
267	<	public void run() {
268	<	int added = 0;
269	<	try {
270	<	q.put(new Object());
271	<	++added;
301	<	q.put(new Object());
302	<	++added;
303	<	q.put(new Object());
304	<	++added;
305	<	q.put(new Object());
266	>	Thread t = new Thread(new CheckedRunnable() {
267	>	public void realRun() throws InterruptedException {
268	>	int added = 0;
269	>	try {
270	>	while (true) {
271	>	q.put(added);
272		++added;
307	–	threadShouldThrow();
308	–	} catch (InterruptedException e){
309	–	assertTrue(added >= 1);
273		}
274	+	} catch (InterruptedException success) {
275	+	assertEquals(1, added);
276		}
277	<	});
313	<	try {
314	<	t.start();
315	<	Thread.sleep(SHORT_DELAY_MS);
316	<	q.take();
317	<	Thread.sleep(SHORT_DELAY_MS);
318	<	t.interrupt();
319	<	t.join();
320	<	} catch (Exception e){
321	<	unexpectedException();
322	<	}
323	<	}
277	>	}});
278
279	<	/**
280	<	* timed offer times out if elements not taken
281	<	*/
282	<	public void testFairTimedOffer() {
283	<	final SynchronousQueue q = new SynchronousQueue(true);
284	<	Thread t = new Thread(new Runnable() {
331	<	public void run() {
332	<	try {
333	<
334	<	threadAssertFalse(q.offer(new Object(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
335	<	q.offer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS);
336	<	threadShouldThrow();
337	<	} catch (InterruptedException success){}
338	<	}
339	<	});
340	<
341	<	try {
342	<	t.start();
343	<	Thread.sleep(SMALL_DELAY_MS);
344	<	t.interrupt();
345	<	t.join();
346	<	} catch (Exception e){
347	<	unexpectedException();
348	<	}
279	>	t.start();
280	>	Thread.sleep(SHORT_DELAY_MS);
281	>	assertEquals(0, q.take());
282	>	Thread.sleep(SHORT_DELAY_MS);
283	>	t.interrupt();
284	>	t.join();
285		}
286
351	–
287		/**
288		* take blocks interruptibly when empty
289		*/
290	<	public void testFairTakeFromEmpty() {
290	>	public void testFairTakeFromEmpty() throws InterruptedException {
291		final SynchronousQueue q = new SynchronousQueue(true);
292	<	Thread t = new Thread(new Runnable() {
293	<	public void run() {
294	<	try {
295	<	q.take();
296	<	threadShouldThrow();
297	<	} catch (InterruptedException success){ }
298	<	}
299	<	});
300	<	try {
366	<	t.start();
367	<	Thread.sleep(SHORT_DELAY_MS);
368	<	t.interrupt();
369	<	t.join();
370	<	} catch (Exception e){
371	<	unexpectedException();
372	<	}
292	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
293	>	public void realRun() throws InterruptedException {
294	>	q.take();
295	>	}});
296	>
297	>	t.start();
298	>	Thread.sleep(SHORT_DELAY_MS);
299	>	t.interrupt();
300	>	t.join();
301		}
302
303		/**
304	<	* poll fails unless active taker
304	>	* poll return null if no active putter
305		*/
306		public void testPoll() {
307		SynchronousQueue q = new SynchronousQueue();
308	<	assertNull(q.poll());
308	>	assertNull(q.poll());
309		}
310
311		/**
312	<	* timed pool with zero timeout times out if no active taker
312	>	* timed poll with zero timeout times out if no active putter
313		*/
314	<	public void testTimedPoll0() {
315	<	try {
316	<	SynchronousQueue q = new SynchronousQueue();
389	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
390	<	} catch (InterruptedException e){
391	<	unexpectedException();
392	<	}
314	>	public void testTimedPoll0() throws InterruptedException {
315	>	SynchronousQueue q = new SynchronousQueue();
316	>	assertNull(q.poll(0, MILLISECONDS));
317		}
318
319		/**
320	<	* timed pool with nonzero timeout times out if no active taker
320	>	* timed poll with nonzero timeout times out if no active putter
321		*/
322	<	public void testTimedPoll() {
323	<	try {
324	<	SynchronousQueue q = new SynchronousQueue();
325	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
326	<	} catch (InterruptedException e){
403	<	unexpectedException();
404	<	}
322	>	public void testTimedPoll() throws InterruptedException {
323	>	SynchronousQueue q = new SynchronousQueue();
324	>	long t0 = System.nanoTime();
325	>	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
326	>	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
327		}
328
329		/**
330		* Interrupted timed poll throws InterruptedException instead of
331		* returning timeout status
332		*/
333	<	public void testInterruptedTimedPoll() {
334	<	Thread t = new Thread(new Runnable() {
335	<	public void run() {
336	<	try {
337	<	SynchronousQueue q = new SynchronousQueue();
338	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
339	<	} catch (InterruptedException success){
340	<	}
341	<	}});
342	<	t.start();
343	<	try {
344	<	Thread.sleep(SHORT_DELAY_MS);
345	<	t.interrupt();
346	<	t.join();
347	<	}
348	<	catch (InterruptedException ie) {
349	<	unexpectedException();
350	<	}
333	>	public void testInterruptedTimedPoll(final SynchronousQueue q)
334	>	throws InterruptedException {
335	>	final CountDownLatch threadStarted = new CountDownLatch(1);
336	>	Thread t = newStartedThread(new CheckedRunnable() {
337	>	public void realRun() throws InterruptedException {
338	>	long t0 = System.nanoTime();
339	>	threadStarted.countDown();
340	>	try {
341	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
342	>	shouldThrow();
343	>	} catch (InterruptedException success) {}
344	>	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
345	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
346	>	}});
347	>
348	>	threadStarted.await();
349	>	Thread.sleep(SHORT_DELAY_MS);
350	>	t.interrupt();
351	>	awaitTermination(t, MEDIUM_DELAY_MS);
352		}
353
354		/**
355	<	*  timed poll before a delayed offer fails; after offer succeeds;
356	<	*  on interruption throws
355	>	* Interrupted timed poll throws InterruptedException instead of
356	>	* returning timeout status
357		*/
358	<	public void testTimedPollWithOffer() {
359	<	final SynchronousQueue q = new SynchronousQueue();
360	<	Thread t = new Thread(new Runnable() {
438	<	public void run() {
439	<	try {
440	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
441	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
442	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
443	<	threadShouldThrow();
444	<	} catch (InterruptedException success) { }
445	<	}
446	<	});
447	<	try {
448	<	t.start();
449	<	Thread.sleep(SMALL_DELAY_MS);
450	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
451	<	t.interrupt();
452	<	t.join();
453	<	} catch (Exception e){
454	<	unexpectedException();
455	<	}
456	<	}
358	>	public void testInterruptedTimedPoll() throws InterruptedException {
359	>	testInterruptedTimedPoll(new SynchronousQueue());
360	>	}
361
362		/**
363		* Interrupted timed poll throws InterruptedException instead of
364		* returning timeout status
365		*/
366	<	public void testFairInterruptedTimedPoll() {
367	<	Thread t = new Thread(new Runnable() {
464	<	public void run() {
465	<	try {
466	<	SynchronousQueue q = new SynchronousQueue(true);
467	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
468	<	} catch (InterruptedException success){
469	<	}
470	<	}});
471	<	t.start();
472	<	try {
473	<	Thread.sleep(SHORT_DELAY_MS);
474	<	t.interrupt();
475	<	t.join();
476	<	}
477	<	catch (InterruptedException ie) {
478	<	unexpectedException();
479	<	}
366	>	public void testFairInterruptedTimedPoll() throws InterruptedException {
367	>	testInterruptedTimedPoll(new SynchronousQueue(true));
368		}
369
370		/**
371	<	*  timed poll before a delayed offer fails; after offer succeeds;
372	<	*  on interruption throws
371	>	* timed poll before a delayed offer times out, returning null;
372	>	* after offer succeeds; on interruption throws
373		*/
374	<	public void testFairTimedPollWithOffer() {
374	>	public void testFairTimedPollWithOffer() throws InterruptedException {
375		final SynchronousQueue q = new SynchronousQueue(true);
376	<	Thread t = new Thread(new Runnable() {
377	<	public void run() {
378	<	try {
379	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
380	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
381	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
382	<	threadShouldThrow();
383	<	} catch (InterruptedException success) { }
384	<	}
385	<	});
386	<	try {
387	<	t.start();
388	<	Thread.sleep(SMALL_DELAY_MS);
389	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
390	<	t.interrupt();
391	<	t.join();
392	<	} catch (Exception e){
393	<	unexpectedException();
394	<	}
395	<	}
376	>	final CountDownLatch pleaseOffer = new CountDownLatch(1);
377	>	Thread t = newStartedThread(new CheckedRunnable() {
378	>	public void realRun() throws InterruptedException {
379	>	long t0 = System.nanoTime();
380	>	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
381	>	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
382	>
383	>	pleaseOffer.countDown();
384	>	t0 = System.nanoTime();
385	>	assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS));
386	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
387	>
388	>	t0 = System.nanoTime();
389	>	try {
390	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
391	>	shouldThrow();
392	>	} catch (InterruptedException success) {}
393	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
394	>	}});
395	>
396	>	assertTrue(pleaseOffer.await(MEDIUM_DELAY_MS, MILLISECONDS));
397	>	long t0 = System.nanoTime();
398	>	assertTrue(q.offer(zero, LONG_DELAY_MS, MILLISECONDS));
399	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
400
401	+	t.interrupt();
402	+	awaitTermination(t, MEDIUM_DELAY_MS);
403	+	}
404
405		/**
406	<	* peek returns null
406	>	* peek() returns null if no active putter
407		*/
408		public void testPeek() {
409		SynchronousQueue q = new SynchronousQueue();
410	<	assertNull(q.peek());
410	>	assertNull(q.peek());
411		}
412
413		/**
414	<	* element throws NSEE
414	>	* element() throws NSEE if no active putter
415		*/
416		public void testElement() {
417		SynchronousQueue q = new SynchronousQueue();
418		try {
419		q.element();
420		shouldThrow();
421	<	}
527	<	catch (NoSuchElementException success) {}
421	>	} catch (NoSuchElementException success) {}
422		}
423
424		/**
425	<	* remove throws NSEE if no active taker
425	>	* remove() throws NSEE if no active putter
426		*/
427		public void testRemove() {
428		SynchronousQueue q = new SynchronousQueue();
429		try {
430		q.remove();
431		shouldThrow();
432	<	} catch (NoSuchElementException success){
539	<	}
432	>	} catch (NoSuchElementException success) {}
433		}
434
435		/**
#	Line 547 | 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 604 | 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 613 | 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	<	try {
518	<	SynchronousQueue q = new SynchronousQueue();
519	<	Object o[] = q.toArray(null);
520	<	shouldThrow();
521	<	} catch(NullPointerException success){}
517	>	SynchronousQueue q = new SynchronousQueue();
518	>	try {
519	>	Object o[] = q.toArray(null);
520	>	shouldThrow();
521	>	} catch (NullPointerException success) {}
522		}
523
524
#	Line 634 | Line 527 | public class SynchronousQueueTest extend
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	<	}
643	<	catch (NoSuchElementException success) {}
535	>	} catch (NoSuchElementException success) {}
536		}
537
538		/**
#	Line 648 | 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	<	}
656	<	catch (IllegalStateException success) {}
547	>	} catch (IllegalStateException success) {}
548		}
549
550		/**
#	Line 663 | 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 672 | Line 563 | public class SynchronousQueueTest extend
563		public void testOfferInExecutor() {
564		final SynchronousQueue q = new SynchronousQueue();
565		ExecutorService executor = Executors.newFixedThreadPool(2);
675	–	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
690	–	executor.execute(new Runnable() {
691	–	public void run() {
692	–	try {
693	–	Thread.sleep(SMALL_DELAY_MS);
694	–	threadAssertEquals(one, q.take());
695	–	}
696	–	catch (InterruptedException e) {
697	–	threadUnexpectedException();
698	–	}
699	–	}
700	–	});
701	–
580		joinPool(executor);
703	–
581		}
582
583		/**
#	Line 709 | 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
725	–	executor.execute(new Runnable() {
726	–	public void run() {
727	–	try {
728	–	Thread.sleep(SMALL_DELAY_MS);
729	–	q.put(new Integer(1));
730	–	}
731	–	catch (InterruptedException e) {
732	–	threadUnexpectedException();
733	–	}
734	–	}
735	–	});
736	–
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	<	try {
611	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
612	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
613	<	out.writeObject(q);
614	<	out.close();
615	<
616	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
617	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
618	<	SynchronousQueue r = (SynchronousQueue)in.readObject();
619	<	assertEquals(q.size(), r.size());
620	<	while (!q.isEmpty())
756	<	assertEquals(q.remove(), r.remove());
757	<	} catch(Exception e){
758	<	unexpectedException();
759	<	}
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	<	*/
625	>	*/
626		public void testDrainToNull() {
627		SynchronousQueue q = new SynchronousQueue();
628		try {
629		q.drainTo(null);
630		shouldThrow();
631	<	} catch(NullPointerException success) {
771	<	}
631	>	} catch (NullPointerException success) {}
632		}
633
634		/**
635		* drainTo(this) throws IAE
636	<	*/
636	>	*/
637		public void testDrainToSelf() {
638		SynchronousQueue q = new SynchronousQueue();
639		try {
640		q.drainTo(q);
641		shouldThrow();
642	<	} catch(IllegalArgumentException success) {
783	<	}
642	>	} catch (IllegalArgumentException success) {}
643		}
644
645		/**
646		* drainTo(c) of empty queue doesn't transfer elements
647	<	*/
647	>	*/
648		public void testDrainTo() {
649		SynchronousQueue q = new SynchronousQueue();
650		ArrayList l = new ArrayList();
#	Line 796 | Line 655 | public class SynchronousQueueTest extend
655
656		/**
657		* drainTo empties queue, unblocking a waiting put.
658	<	*/
659	<	public void testDrainToWithActivePut() {
658	>	*/
659	>	public void testDrainToWithActivePut() throws InterruptedException {
660		final SynchronousQueue q = new SynchronousQueue();
661	<	Thread t = new Thread(new Runnable() {
662	<	public void run() {
663	<	try {
664	<	q.put(new Integer(1));
665	<	} catch (InterruptedException ie){
666	<	threadUnexpectedException();
667	<	}
668	<	}
669	<	});
670	<	try {
671	<	t.start();
672	<	ArrayList l = new ArrayList();
673	<	Thread.sleep(SHORT_DELAY_MS);
674	<	q.drainTo(l);
816	<	assertTrue(l.size() <= 1);
817	<	if (l.size() > 0)
818	<	assertEquals(l.get(0), new Integer(1));
819	<	t.join();
820	<	assertTrue(l.size() <= 1);
821	<	} catch(Exception e){
822	<	unexpectedException();
823	<	}
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	<	*/
679	>	*/
680		public void testDrainToNullN() {
681		SynchronousQueue q = new SynchronousQueue();
682		try {
683		q.drainTo(null, 0);
684		shouldThrow();
685	<	} catch(NullPointerException success) {
835	<	}
685	>	} catch (NullPointerException success) {}
686		}
687
688		/**
689		* drainTo(this, n) throws IAE
690	<	*/
690	>	*/
691		public void testDrainToSelfN() {
692		SynchronousQueue q = new SynchronousQueue();
693		try {
694		q.drainTo(q, 0);
695		shouldThrow();
696	<	} catch(IllegalArgumentException success) {
847	<	}
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() {
701	>	*/
702	>	public void testDrainToN() throws InterruptedException {
703		final SynchronousQueue q = new SynchronousQueue();
704	<	Thread t1 = new Thread(new Runnable() {
705	<	public void run() {
706	<	try {
707	<	q.put(one);
708	<	} catch (InterruptedException ie){
709	<	threadUnexpectedException();
710	<	}
711	<	}
712	<	});
864	<	Thread t2 = new Thread(new Runnable() {
865	<	public void run() {
866	<	try {
867	<	q.put(two);
868	<	} catch (InterruptedException ie){
869	<	threadUnexpectedException();
870	<	}
871	<	}
872	<	});
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	<	try {
715	<	t1.start();
716	<	t2.start();
717	<	ArrayList l = new ArrayList();
718	<	Thread.sleep(SHORT_DELAY_MS);
719	<	q.drainTo(l, 1);
720	<	assertTrue(l.size() == 1);
721	<	q.drainTo(l, 1);
722	<	assertTrue(l.size() == 2);
723	<	assertTrue(l.contains(one));
724	<	assertTrue(l.contains(two));
725	<	t1.join();
886	<	t2.join();
887	<	} catch(Exception e){
888	<	unexpectedException();
889	<	}
714	>	t1.start();
715	>	t2.start();
716	>	ArrayList l = new ArrayList();
717	>	Thread.sleep(SHORT_DELAY_MS);
718	>	q.drainTo(l, 1);
719	>	assertEquals(1, l.size());
720	>	q.drainTo(l, 1);
721	>	assertEquals(2, l.size());
722	>	assertTrue(l.contains(one));
723	>	assertTrue(l.contains(two));
724	>	t1.join();
725	>	t2.join();
726		}
727
892	–
728		}

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