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

Comparing jsr166/src/test/tck/SynchronousQueueTest.java (file contents):
Revision 1.8 by dl, Sun Feb 15 00:27:45 2004 UTC vs.
Revision 1.34 by jsr166, Sat May 21 06:24:33 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	>	delay(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	>	delay(SHORT_DELAY_MS);
200	>	assertEquals(0, q.take());
201	>	delay(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();
236	<	} catch (Exception e){
237	<	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 startTime = System.nanoTime();
215	>	assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS));
216	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
217	>	pleaseInterrupt.countDown();
218	>	try {
219	>	q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS);
220	>	shouldThrow();
221	>	} catch (InterruptedException success) {}
222	>	}});
223	>
224	>	await(pleaseInterrupt);
225	>	t.interrupt();
226	>	awaitTermination(t);
227		}
228
241	–
229		/**
230	<	* take blocks interruptibly when empty
230	>	* timed offer times out if elements not taken
231		*/
232	<	public void testTakeFromEmpty() {
233	<	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	<	}
232	>	public void testTimedOffer() throws InterruptedException {
233	>	testTimedOffer(new SynchronousQueue());
234		}
235
236	+	/**
237	+	* timed offer times out if elements not taken
238	+	*/
239	+	public void testFairTimedOffer() throws InterruptedException {
240	+	testTimedOffer(new SynchronousQueue(true));
241	+	}
242
243		/**
244		* put blocks interruptibly if no active taker
245		*/
246	<	public void testFairBlockingPut() {
247	<	Thread t = new Thread(new Runnable() {
248	<	public void run() {
249	<	try {
250	<	SynchronousQueue q = new SynchronousQueue(true);
251	<	q.put(zero);
252	<	threadShouldThrow();
276	<	} catch (InterruptedException ie){
277	<	}
278	<	}});
246	>	public void testFairBlockingPut() throws InterruptedException {
247	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
248	>	public void realRun() throws InterruptedException {
249	>	SynchronousQueue q = new SynchronousQueue(true);
250	>	q.put(zero);
251	>	}});
252	>
253		t.start();
254	<	try {
255	<	Thread.sleep(SHORT_DELAY_MS);
256	<	t.interrupt();
283	<	t.join();
284	<	}
285	<	catch (InterruptedException ie) {
286	<	unexpectedException();
287	<	}
254	>	delay(SHORT_DELAY_MS);
255	>	t.interrupt();
256	>	t.join();
257		}
258
259		/**
260	<	* put blocks waiting for take
260	>	* put blocks waiting for take
261		*/
262	<	public void testFairPutWithTake() {
262	>	public void testFairPutWithTake() throws InterruptedException {
263		final SynchronousQueue q = new SynchronousQueue(true);
264	<	Thread t = new Thread(new Runnable() {
265	<	public void run() {
266	<	int added = 0;
267	<	try {
268	<	q.put(new Object());
269	<	++added;
301	<	q.put(new Object());
302	<	++added;
303	<	q.put(new Object());
304	<	++added;
305	<	q.put(new Object());
264	>	Thread t = new Thread(new CheckedRunnable() {
265	>	public void realRun() throws InterruptedException {
266	>	int added = 0;
267	>	try {
268	>	while (true) {
269	>	q.put(added);
270		++added;
307	–	threadShouldThrow();
308	–	} catch (InterruptedException e){
309	–	assertTrue(added >= 1);
271		}
272	+	} catch (InterruptedException success) {
273	+	assertEquals(1, added);
274		}
275	<	});
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	<	}
275	>	}});
276
277	<	/**
278	<	* timed offer times out if elements not taken
279	<	*/
280	<	public void testFairTimedOffer() {
281	<	final SynchronousQueue q = new SynchronousQueue(true);
282	<	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	<	}
277	>	t.start();
278	>	delay(SHORT_DELAY_MS);
279	>	assertEquals(0, q.take());
280	>	delay(SHORT_DELAY_MS);
281	>	t.interrupt();
282	>	t.join();
283		}
284
351	–
285		/**
286		* take blocks interruptibly when empty
287		*/
288	<	public void testFairTakeFromEmpty() {
288	>	public void testFairTakeFromEmpty() throws InterruptedException {
289		final SynchronousQueue q = new SynchronousQueue(true);
290	<	Thread t = new Thread(new Runnable() {
291	<	public void run() {
292	<	try {
293	<	q.take();
294	<	threadShouldThrow();
295	<	} catch (InterruptedException success){ }
296	<	}
297	<	});
298	<	try {
366	<	t.start();
367	<	Thread.sleep(SHORT_DELAY_MS);
368	<	t.interrupt();
369	<	t.join();
370	<	} catch (Exception e){
371	<	unexpectedException();
372	<	}
290	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
291	>	public void realRun() throws InterruptedException {
292	>	q.take();
293	>	}});
294	>
295	>	t.start();
296	>	delay(SHORT_DELAY_MS);
297	>	t.interrupt();
298	>	t.join();
299		}
300
301		/**
302	<	* poll fails unless active taker
302	>	* poll return null if no active putter
303		*/
304		public void testPoll() {
305		SynchronousQueue q = new SynchronousQueue();
306	<	assertNull(q.poll());
306	>	assertNull(q.poll());
307		}
308
309		/**
310	<	* timed pool with zero timeout times out if no active taker
310	>	* timed poll with zero timeout times out if no active putter
311		*/
312	<	public void testTimedPoll0() {
313	<	try {
314	<	SynchronousQueue q = new SynchronousQueue();
389	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
390	<	} catch (InterruptedException e){
391	<	unexpectedException();
392	<	}
312	>	public void testTimedPoll0() throws InterruptedException {
313	>	SynchronousQueue q = new SynchronousQueue();
314	>	assertNull(q.poll(0, MILLISECONDS));
315		}
316
317		/**
318	<	* timed pool with nonzero timeout times out if no active taker
318	>	* timed poll with nonzero timeout times out if no active putter
319		*/
320	<	public void testTimedPoll() {
321	<	try {
322	<	SynchronousQueue q = new SynchronousQueue();
323	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
324	<	} catch (InterruptedException e){
403	<	unexpectedException();
404	<	}
320	>	public void testTimedPoll() throws InterruptedException {
321	>	SynchronousQueue q = new SynchronousQueue();
322	>	long t0 = System.nanoTime();
323	>	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
324	>	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
325		}
326
327		/**
328		* Interrupted timed poll throws InterruptedException instead of
329		* returning timeout status
330		*/
331	<	public void testInterruptedTimedPoll() {
332	<	Thread t = new Thread(new Runnable() {
333	<	public void run() {
334	<	try {
335	<	SynchronousQueue q = new SynchronousQueue();
336	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
337	<	} catch (InterruptedException success){
338	<	}
339	<	}});
340	<	t.start();
341	<	try {
342	<	Thread.sleep(SHORT_DELAY_MS);
343	<	t.interrupt();
344	<	t.join();
345	<	}
346	<	catch (InterruptedException ie) {
347	<	unexpectedException();
348	<	}
331	>	public void testInterruptedTimedPoll(final SynchronousQueue q)
332	>	throws InterruptedException {
333	>	final CountDownLatch threadStarted = new CountDownLatch(1);
334	>	Thread t = newStartedThread(new CheckedRunnable() {
335	>	public void realRun() throws InterruptedException {
336	>	long t0 = System.nanoTime();
337	>	threadStarted.countDown();
338	>	try {
339	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
340	>	shouldThrow();
341	>	} catch (InterruptedException success) {}
342	>	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
343	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
344	>	}});
345	>
346	>	threadStarted.await();
347	>	delay(SHORT_DELAY_MS);
348	>	t.interrupt();
349	>	awaitTermination(t, MEDIUM_DELAY_MS);
350		}
351
352		/**
353	<	*  timed poll before a delayed offer fails; after offer succeeds;
354	<	*  on interruption throws
353	>	* Interrupted timed poll throws InterruptedException instead of
354	>	* returning timeout status
355		*/
356	<	public void testTimedPollWithOffer() {
357	<	final SynchronousQueue q = new SynchronousQueue();
358	<	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	<	}
356	>	public void testInterruptedTimedPoll() throws InterruptedException {
357	>	testInterruptedTimedPoll(new SynchronousQueue());
358	>	}
359
360		/**
361		* Interrupted timed poll throws InterruptedException instead of
362		* returning timeout status
363		*/
364	<	public void testFairInterruptedTimedPoll() {
365	<	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	<	}
364	>	public void testFairInterruptedTimedPoll() throws InterruptedException {
365	>	testInterruptedTimedPoll(new SynchronousQueue(true));
366		}
367
368		/**
369	<	*  timed poll before a delayed offer fails; after offer succeeds;
370	<	*  on interruption throws
369	>	* timed poll before a delayed offer times out, returning null;
370	>	* after offer succeeds; on interruption throws
371		*/
372	<	public void testFairTimedPollWithOffer() {
372	>	public void testFairTimedPollWithOffer() throws InterruptedException {
373		final SynchronousQueue q = new SynchronousQueue(true);
374	<	Thread t = new Thread(new Runnable() {
375	<	public void run() {
376	<	try {
377	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
378	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
379	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
380	<	threadShouldThrow();
381	<	} catch (InterruptedException success) { }
382	<	}
383	<	});
384	<	try {
385	<	t.start();
386	<	Thread.sleep(SMALL_DELAY_MS);
387	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
388	<	t.interrupt();
389	<	t.join();
390	<	} catch (Exception e){
391	<	unexpectedException();
392	<	}
393	<	}
374	>	final CountDownLatch pleaseOffer = new CountDownLatch(1);
375	>	Thread t = newStartedThread(new CheckedRunnable() {
376	>	public void realRun() throws InterruptedException {
377	>	long t0 = System.nanoTime();
378	>	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
379	>	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
380	>
381	>	pleaseOffer.countDown();
382	>	t0 = System.nanoTime();
383	>	assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS));
384	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
385	>
386	>	t0 = System.nanoTime();
387	>	try {
388	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
389	>	shouldThrow();
390	>	} catch (InterruptedException success) {}
391	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
392	>	}});
393	>
394	>	assertTrue(pleaseOffer.await(MEDIUM_DELAY_MS, MILLISECONDS));
395	>	long t0 = System.nanoTime();
396	>	assertTrue(q.offer(zero, LONG_DELAY_MS, MILLISECONDS));
397	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
398
399	+	t.interrupt();
400	+	awaitTermination(t, MEDIUM_DELAY_MS);
401	+	}
402
403		/**
404	<	* peek returns null
404	>	* peek() returns null if no active putter
405		*/
406		public void testPeek() {
407		SynchronousQueue q = new SynchronousQueue();
408	<	assertNull(q.peek());
408	>	assertNull(q.peek());
409		}
410
411		/**
412	<	* element throws NSEE
412	>	* element() throws NSEE if no active putter
413		*/
414		public void testElement() {
415		SynchronousQueue q = new SynchronousQueue();
416		try {
417		q.element();
418		shouldThrow();
419	<	}
527	<	catch (NoSuchElementException success) {}
419	>	} catch (NoSuchElementException success) {}
420		}
421
422		/**
423	<	* remove throws NSEE if no active taker
423	>	* remove() throws NSEE if no active putter
424		*/
425		public void testRemove() {
426		SynchronousQueue q = new SynchronousQueue();
427		try {
428		q.remove();
429		shouldThrow();
430	<	} catch (NoSuchElementException success){
539	<	}
430	>	} catch (NoSuchElementException success) {}
431		}
432
433		/**
#	Line 547 | Line 438 | public class SynchronousQueueTest extend
438		assertFalse(q.remove(zero));
439		assertTrue(q.isEmpty());
440		}
441	<
441	>
442		/**
443		* contains returns false
444		*/
#	Line 604 | Line 495 | public class SynchronousQueueTest extend
495		*/
496		public void testToArray() {
497		SynchronousQueue q = new SynchronousQueue();
498	<	Object[] o = q.toArray();
498	>	Object[] o = q.toArray();
499		assertEquals(o.length, 0);
500		}
501
#	Line 613 | Line 504 | public class SynchronousQueueTest extend
504		*/
505		public void testToArray2() {
506		SynchronousQueue q = new SynchronousQueue();
507	<	Integer[] ints = new Integer[1];
507	>	Integer[] ints = new Integer[1];
508		assertNull(ints[0]);
509		}
510	<
510	>
511		/**
512		* toArray(null) throws NPE
513		*/
514		public void testToArray_BadArg() {
515	<	try {
516	<	SynchronousQueue q = new SynchronousQueue();
517	<	Object o[] = q.toArray(null);
518	<	shouldThrow();
519	<	} catch(NullPointerException success){}
515	>	SynchronousQueue q = new SynchronousQueue();
516	>	try {
517	>	Object o[] = q.toArray(null);
518	>	shouldThrow();
519	>	} catch (NullPointerException success) {}
520		}
521
522
#	Line 634 | Line 525 | public class SynchronousQueueTest extend
525		*/
526		public void testIterator() {
527		SynchronousQueue q = new SynchronousQueue();
528	<	Iterator it = q.iterator();
528	>	Iterator it = q.iterator();
529		assertFalse(it.hasNext());
530		try {
531		Object x = it.next();
532		shouldThrow();
533	<	}
643	<	catch (NoSuchElementException success) {}
533	>	} catch (NoSuchElementException success) {}
534		}
535
536		/**
#	Line 648 | Line 538 | public class SynchronousQueueTest extend
538		*/
539		public void testIteratorRemove() {
540		SynchronousQueue q = new SynchronousQueue();
541	<	Iterator it = q.iterator();
541	>	Iterator it = q.iterator();
542		try {
543		it.remove();
544		shouldThrow();
545	<	}
656	<	catch (IllegalStateException success) {}
545	>	} catch (IllegalStateException success) {}
546		}
547
548		/**
#	Line 663 | Line 552 | public class SynchronousQueueTest extend
552		SynchronousQueue q = new SynchronousQueue();
553		String s = q.toString();
554		assertNotNull(s);
555	<	}
555	>	}
556
557
558		/**
#	Line 672 | Line 561 | public class SynchronousQueueTest extend
561		public void testOfferInExecutor() {
562		final SynchronousQueue q = new SynchronousQueue();
563		ExecutorService executor = Executors.newFixedThreadPool(2);
675	–	final Integer one = new Integer(1);
564
565	<	executor.execute(new Runnable() {
566	<	public void run() {
567	<	threadAssertFalse(q.offer(one));
568	<	try {
569	<	threadAssertTrue(q.offer(one, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
570	<	threadAssertEquals(0, q.remainingCapacity());
571	<	}
572	<	catch (InterruptedException e) {
573	<	threadUnexpectedException();
574	<	}
575	<	}
576	<	});
565	>	executor.execute(new CheckedRunnable() {
566	>	public void realRun() throws InterruptedException {
567	>	assertFalse(q.offer(one));
568	>	assertTrue(q.offer(one, MEDIUM_DELAY_MS, MILLISECONDS));
569	>	assertEquals(0, q.remainingCapacity());
570	>	}});
571	>
572	>	executor.execute(new CheckedRunnable() {
573	>	public void realRun() throws InterruptedException {
574	>	delay(SMALL_DELAY_MS);
575	>	assertSame(one, q.take());
576	>	}});
577
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	–
578		joinPool(executor);
703	–
579		}
580
581		/**
#	Line 709 | Line 584 | public class SynchronousQueueTest extend
584		public void testPollInExecutor() {
585		final SynchronousQueue q = new SynchronousQueue();
586		ExecutorService executor = Executors.newFixedThreadPool(2);
587	<	executor.execute(new Runnable() {
588	<	public void run() {
589	<	threadAssertNull(q.poll());
590	<	try {
591	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
592	<	threadAssertTrue(q.isEmpty());
593	<	}
594	<	catch (InterruptedException e) {
595	<	threadUnexpectedException();
596	<	}
597	<	}
598	<	});
587	>	executor.execute(new CheckedRunnable() {
588	>	public void realRun() throws InterruptedException {
589	>	assertNull(q.poll());
590	>	assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
591	>	assertTrue(q.isEmpty());
592	>	}});
593	>
594	>	executor.execute(new CheckedRunnable() {
595	>	public void realRun() throws InterruptedException {
596	>	delay(SHORT_DELAY_MS);
597	>	q.put(one);
598	>	}});
599
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	–
600		joinPool(executor);
601		}
602
603		/**
604		* a deserialized serialized queue is usable
605		*/
606	<	public void testSerialization() {
606	>	public void testSerialization() throws Exception {
607		SynchronousQueue q = new SynchronousQueue();
608	<	try {
609	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
610	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
611	<	out.writeObject(q);
612	<	out.close();
613	<
614	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
615	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
616	<	SynchronousQueue r = (SynchronousQueue)in.readObject();
617	<	assertEquals(q.size(), r.size());
618	<	while (!q.isEmpty())
756	<	assertEquals(q.remove(), r.remove());
757	<	} catch(Exception e){
758	<	unexpectedException();
759	<	}
608	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
609	>	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
610	>	out.writeObject(q);
611	>	out.close();
612	>
613	>	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
614	>	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
615	>	SynchronousQueue r = (SynchronousQueue)in.readObject();
616	>	assertEquals(q.size(), r.size());
617	>	while (!q.isEmpty())
618	>	assertEquals(q.remove(), r.remove());
619		}
620
621		/**
622		* drainTo(null) throws NPE
623	<	*/
623	>	*/
624		public void testDrainToNull() {
625		SynchronousQueue q = new SynchronousQueue();
626		try {
627		q.drainTo(null);
628		shouldThrow();
629	<	} catch(NullPointerException success) {
771	<	}
629	>	} catch (NullPointerException success) {}
630		}
631
632		/**
633		* drainTo(this) throws IAE
634	<	*/
634	>	*/
635		public void testDrainToSelf() {
636		SynchronousQueue q = new SynchronousQueue();
637		try {
638		q.drainTo(q);
639		shouldThrow();
640	<	} catch(IllegalArgumentException success) {
783	<	}
640	>	} catch (IllegalArgumentException success) {}
641		}
642
643		/**
644		* drainTo(c) of empty queue doesn't transfer elements
645	<	*/
645	>	*/
646		public void testDrainTo() {
647		SynchronousQueue q = new SynchronousQueue();
648		ArrayList l = new ArrayList();
#	Line 796 | Line 653 | public class SynchronousQueueTest extend
653
654		/**
655		* drainTo empties queue, unblocking a waiting put.
656	<	*/
657	<	public void testDrainToWithActivePut() {
656	>	*/
657	>	public void testDrainToWithActivePut() throws InterruptedException {
658		final SynchronousQueue q = new SynchronousQueue();
659	<	Thread t = new Thread(new Runnable() {
660	<	public void run() {
661	<	try {
662	<	q.put(new Integer(1));
663	<	} catch (InterruptedException ie){
664	<	threadUnexpectedException();
665	<	}
666	<	}
667	<	});
668	<	try {
669	<	t.start();
670	<	ArrayList l = new ArrayList();
671	<	Thread.sleep(SHORT_DELAY_MS);
672	<	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	<	}
659	>	Thread t = new Thread(new CheckedRunnable() {
660	>	public void realRun() throws InterruptedException {
661	>	q.put(new Integer(1));
662	>	}});
663	>
664	>	t.start();
665	>	ArrayList l = new ArrayList();
666	>	delay(SHORT_DELAY_MS);
667	>	q.drainTo(l);
668	>	assertTrue(l.size() <= 1);
669	>	if (l.size() > 0)
670	>	assertEquals(l.get(0), new Integer(1));
671	>	t.join();
672	>	assertTrue(l.size() <= 1);
673		}
674
675		/**
676		* drainTo(null, n) throws NPE
677	<	*/
677	>	*/
678		public void testDrainToNullN() {
679		SynchronousQueue q = new SynchronousQueue();
680		try {
681		q.drainTo(null, 0);
682		shouldThrow();
683	<	} catch(NullPointerException success) {
835	<	}
683	>	} catch (NullPointerException success) {}
684		}
685
686		/**
687		* drainTo(this, n) throws IAE
688	<	*/
688	>	*/
689		public void testDrainToSelfN() {
690		SynchronousQueue q = new SynchronousQueue();
691		try {
692		q.drainTo(q, 0);
693		shouldThrow();
694	<	} catch(IllegalArgumentException success) {
847	<	}
694	>	} catch (IllegalArgumentException success) {}
695		}
696
697		/**
698		* drainTo(c, n) empties up to n elements of queue into c
699	<	*/
700	<	public void testDrainToN() {
699	>	*/
700	>	public void testDrainToN() throws InterruptedException {
701		final SynchronousQueue q = new SynchronousQueue();
702	<	Thread t1 = new Thread(new Runnable() {
703	<	public void run() {
704	<	try {
705	<	q.put(one);
706	<	} catch (InterruptedException ie){
707	<	threadUnexpectedException();
708	<	}
709	<	}
710	<	});
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	<	});
702	>	Thread t1 = new Thread(new CheckedRunnable() {
703	>	public void realRun() throws InterruptedException {
704	>	q.put(one);
705	>	}});
706	>
707	>	Thread t2 = new Thread(new CheckedRunnable() {
708	>	public void realRun() throws InterruptedException {
709	>	q.put(two);
710	>	}});
711
712	<	try {
713	<	t1.start();
714	<	t2.start();
715	<	ArrayList l = new ArrayList();
716	<	Thread.sleep(SHORT_DELAY_MS);
717	<	q.drainTo(l, 1);
718	<	assertTrue(l.size() == 1);
719	<	q.drainTo(l, 1);
720	<	assertTrue(l.size() == 2);
721	<	assertTrue(l.contains(one));
722	<	assertTrue(l.contains(two));
723	<	t1.join();
886	<	t2.join();
887	<	} catch(Exception e){
888	<	unexpectedException();
889	<	}
712	>	t1.start();
713	>	t2.start();
714	>	ArrayList l = new ArrayList();
715	>	delay(SHORT_DELAY_MS);
716	>	q.drainTo(l, 1);
717	>	assertEquals(1, l.size());
718	>	q.drainTo(l, 1);
719	>	assertEquals(2, l.size());
720	>	assertTrue(l.contains(one));
721	>	assertTrue(l.contains(two));
722	>	t1.join();
723	>	t2.join();
724		}
725
892	–
726		}

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