ViewVC Help

View File | Revision Log | Show Annotations | Download File | Root Listing

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

Comparing jsr166/src/test/tck/SynchronousQueueTest.java (file contents):
Revision 1.4 by dl, Sat Sep 20 18:20:08 2003 UTC vs.
Revision 1.32 by jsr166, Thu Apr 14 22:55:08 2011 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
2	>	* Written by Doug Lea with assistance from members of JCP JSR-166
3	>	* Expert Group and released to the public domain, as explained at
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9		import junit.framework.*;
10		import java.util.*;
11		import java.util.concurrent.*;
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	<	*
40	>	* Any SynchronousQueue is both empty and full
41		*/
42	<	public void testEmptyFull() {
27	<	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(new Integer(3)));
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	>	testEmptyFull(new SynchronousQueue(true));
61		}
62
63		/**
64	<	*
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 {
79	>	SynchronousQueue q = new SynchronousQueue();
80	>	q.add(null);
81	>	shouldThrow();
82	>	} catch (NullPointerException success) {}
83		}
84
85		/**
86	<	*
86	>	* offer fails if no active taker
87		*/
88		public void testOffer() {
89		SynchronousQueue q = new SynchronousQueue();
90	<	assertFalse(q.offer(new Integer(1)));
90	>	assertFalse(q.offer(one));
91		}
92
93		/**
94	<	*
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(new Integer(0));
101	<	} catch (IllegalStateException success){
102	<	}
100	>	q.add(one);
101	>	shouldThrow();
102	>	} catch (IllegalStateException success) {}
103		}
104
105		/**
106	<	*
106	>	* addAll(null) throws NPE
107		*/
108		public void testAddAll1() {
109		try {
110		SynchronousQueue q = new SynchronousQueue();
111		q.addAll(null);
112		shouldThrow();
113	<	}
114	<	catch (NullPointerException success) {}
113	>	} catch (NullPointerException success) {}
114	>	}
115	>
116	>	/**
117	>	* addAll(this) throws IAE
118	>	*/
119	>	public void testAddAllSelf() {
120	>	try {
121	>	SynchronousQueue q = new SynchronousQueue();
122	>	q.addAll(q);
123	>	shouldThrow();
124	>	} catch (IllegalArgumentException success) {}
125		}
126	+
127		/**
128	<	*
128	>	* addAll of a collection with null elements throws NPE
129		*/
130		public void testAddAll2() {
131		try {
#	Line 82 | Line 133 | public class SynchronousQueueTest extend
133		Integer[] ints = new Integer[1];
134		q.addAll(Arrays.asList(ints));
135		shouldThrow();
136	<	}
86	<	catch (NullPointerException success) {}
136	>	} catch (NullPointerException success) {}
137		}
138	+
139		/**
140	<	*
140	>	* addAll throws ISE if no active taker
141		*/
142		public void testAddAll4() {
143		try {
#	Line 96 | Line 147 | public class SynchronousQueueTest extend
147		ints[i] = new Integer(i);
148		q.addAll(Arrays.asList(ints));
149		shouldThrow();
150	<	}
100	<	catch (IllegalStateException success) {}
150	>	} catch (IllegalStateException success) {}
151		}
152
153		/**
154	<	*
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){
113	<	}
114	<	catch (InterruptedException ie) {
115	<	unexpectedException();
116	<	}
117	<	}
161	>	} catch (NullPointerException success) {}
162	>	}
163
164		/**
165	<	*
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(new Integer(0));
173	<	threadShouldThrow();
129	<	} catch (InterruptedException ie){
130	<	}
131	<	}});
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();
136	<	t.join();
137	<	}
138	<	catch (InterruptedException ie) {
139	<	unexpectedException();
140	<	}
175	>	Thread.sleep(SHORT_DELAY_MS);
176	>	t.interrupt();
177	>	t.join();
178		}
179
180		/**
181	<	*
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;
154	<	q.put(new Object());
155	<	++added;
156	<	q.put(new Object());
157	<	++added;
158	<	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;
160	–	threadShouldThrow();
161	–	} catch (InterruptedException e){
162	–	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();
204	<	} catch (Exception e){
205	<	unexpectedException();
206	<	}
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(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
231		/**
232	<	*
232	>	* timed offer times out if elements not taken
233		*/
234	<	public void testTimedOffer() {
235	<	final SynchronousQueue q = new SynchronousQueue();
183	<	Thread t = new Thread(new Runnable() {
184	<	public void run() {
185	<	try {
186	<
187	<	threadAssertFalse(q.offer(new Object(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
188	<	q.offer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS);
189	<	threadShouldThrow();
190	<	} catch (InterruptedException success){}
191	<	}
192	<	});
193	<
194	<	try {
195	<	t.start();
196	<	Thread.sleep(SMALL_DELAY_MS);
197	<	t.interrupt();
198	<	t.join();
199	<	} catch (Exception e){
200	<	unexpectedException();
201	<	}
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	<	*
246	>	* put blocks interruptibly if no active taker
247		*/
248	<	public void testTakeFromEmpty() {
249	<	final SynchronousQueue q = new SynchronousQueue();
250	<	Thread t = new Thread(new Runnable() {
251	<	public void run() {
252	<	try {
253	<	q.take();
254	<	threadShouldThrow();
255	<	} catch (InterruptedException success){ }
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	>	Thread.sleep(SHORT_DELAY_MS);
257	>	t.interrupt();
258	>	t.join();
259	>	}
260	>
261	>	/**
262	>	* put blocks waiting for take
263	>	*/
264	>	public void testFairPutWithTake() throws InterruptedException {
265	>	final SynchronousQueue q = new SynchronousQueue(true);
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;
273	>	}
274	>	} catch (InterruptedException success) {
275	>	assertEquals(1, added);
276		}
277	<	});
278	<	try {
279	<	t.start();
280	<	Thread.sleep(SHORT_DELAY_MS);
281	<	t.interrupt();
282	<	t.join();
283	<	} catch (Exception e){
284	<	unexpectedException();
285	<	}
277	>	}});
278	>
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	>
287	>	/**
288	>	* take blocks interruptibly when empty
289	>	*/
290	>	public void testFairTakeFromEmpty() throws InterruptedException {
291	>	final SynchronousQueue q = new SynchronousQueue(true);
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	<	*
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	<	*
312	>	* timed poll with zero timeout times out if no active putter
313		*/
314	<	public void testTimedPoll0() {
315	<	try {
316	<	SynchronousQueue q = new SynchronousQueue();
242	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
243	<	} catch (InterruptedException e){
244	<	unexpectedException();
245	<	}
314	>	public void testTimedPoll0() throws InterruptedException {
315	>	SynchronousQueue q = new SynchronousQueue();
316	>	assertNull(q.poll(0, MILLISECONDS));
317		}
318
319		/**
320	<	*
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){
256	<	unexpectedException();
257	<	}
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	<	*
331	<	*/
332	<	public void testInterruptedTimedPoll() {
333	<	Thread t = new Thread(new Runnable() {
334	<	public void run() {
335	<	try {
336	<	SynchronousQueue q = new SynchronousQueue();
337	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
338	<	} catch (InterruptedException success){
339	<	}
340	<	}});
341	<	t.start();
342	<	try {
343	<	Thread.sleep(SHORT_DELAY_MS);
344	<	t.interrupt();
345	<	t.join();
346	<	}
347	<	catch (InterruptedException ie) {
348	<	unexpectedException();
349	<	}
330	>	* Interrupted timed poll throws InterruptedException instead of
331	>	* returning timeout status
332	>	*/
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	<	*
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() {
361	<	public void run() {
362	<	try {
363	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
364	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
365	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
366	<	threadShouldThrow();
367	<	} catch (InterruptedException success) { }
368	<	}
369	<	});
370	<	try {
371	<	t.start();
372	<	Thread.sleep(SMALL_DELAY_MS);
373	<	assertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
374	<	t.interrupt();
375	<	t.join();
376	<	} catch (Exception e){
377	<	unexpectedException();
378	<	}
379	<	}
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() throws InterruptedException {
367	>	testInterruptedTimedPoll(new SynchronousQueue(true));
368	>	}
369	>
370	>	/**
371	>	* timed poll before a delayed offer times out, returning null;
372	>	* after offer succeeds; on interruption throws
373	>	*/
374	>	public void testFairTimedPollWithOffer() throws InterruptedException {
375	>	final SynchronousQueue q = new SynchronousQueue(true);
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	<	*
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	<	*
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	<	}
327	<	catch (NoSuchElementException success) {}
421	>	} catch (NoSuchElementException success) {}
422		}
423
424		/**
425	<	*
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){
339	<	}
432	>	} catch (NoSuchElementException success) {}
433		}
434
435		/**
436	<	*
436	>	* remove(x) returns false
437		*/
438		public void testRemoveElement() {
439		SynchronousQueue q = new SynchronousQueue();
440	<	assertFalse(q.remove(new Integer(0)));
440	>	assertFalse(q.remove(zero));
441		assertTrue(q.isEmpty());
442		}
443	<
443	>
444		/**
445	<	*
445	>	* contains returns false
446		*/
447		public void testContains() {
448		SynchronousQueue q = new SynchronousQueue();
449	<	assertFalse(q.contains(new Integer(0)));
449	>	assertFalse(q.contains(zero));
450		}
451
452		/**
453	<	*
453	>	* clear ensures isEmpty
454		*/
455		public void testClear() {
456		SynchronousQueue q = new SynchronousQueue();
#	Line 366 | Line 459 | public class SynchronousQueueTest extend
459		}
460
461		/**
462	<	*
462	>	* containsAll returns false unless empty
463		*/
464		public void testContainsAll() {
465		SynchronousQueue q = new SynchronousQueue();
466		Integer[] empty = new Integer[0];
467	<	Integer[] ints = new Integer[1]; ints[0] = new Integer(0);
467	>	assertTrue(q.containsAll(Arrays.asList(empty)));
468	>	Integer[] ints = new Integer[1]; ints[0] = zero;
469		assertFalse(q.containsAll(Arrays.asList(ints)));
470		}
471
472		/**
473	<	*
473	>	* retainAll returns false
474		*/
475		public void testRetainAll() {
476		SynchronousQueue q = new SynchronousQueue();
477		Integer[] empty = new Integer[0];
478	<	Integer[] ints = new Integer[1]; ints[0] = new Integer(0);
479	<	q.retainAll(Arrays.asList(ints));
480	<	assertFalse(q.containsAll(Arrays.asList(ints)));
478	>	assertFalse(q.retainAll(Arrays.asList(empty)));
479	>	Integer[] ints = new Integer[1]; ints[0] = zero;
480	>	assertFalse(q.retainAll(Arrays.asList(ints)));
481		}
482
483		/**
484	<	*
484	>	* removeAll returns false
485		*/
486		public void testRemoveAll() {
487		SynchronousQueue q = new SynchronousQueue();
488		Integer[] empty = new Integer[0];
489	<	Integer[] ints = new Integer[1]; ints[0] = new Integer(0);
490	<	q.removeAll(Arrays.asList(ints));
489	>	assertFalse(q.removeAll(Arrays.asList(empty)));
490	>	Integer[] ints = new Integer[1]; ints[0] = zero;
491		assertFalse(q.containsAll(Arrays.asList(ints)));
492		}
493
494
495		/**
496	<	*
496	>	* toArray is empty
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
504		/**
505	<	*
505	>	* toArray(a) is nulled at position 0
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	<	*
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	<	}
430	<	catch (NoSuchElementException success) {}
535	>	} catch (NoSuchElementException success) {}
536		}
537
538		/**
539	<	*
539	>	* iterator remove throws ISE
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	<	}
443	<	catch (IllegalStateException success) {}
547	>	} catch (IllegalStateException success) {}
548		}
549
550		/**
551	<	*
551	>	* toString returns a non-null string
552		*/
553		public void testToString() {
554		SynchronousQueue q = new SynchronousQueue();
555		String s = q.toString();
556	<	assertTrue(s != null);
557	<	}
556	>	assertNotNull(s);
557	>	}
558
559
560		/**
561	<	*
561	>	* offer transfers elements across Executor tasks
562		*/
563		public void testOfferInExecutor() {
564		final SynchronousQueue q = new SynchronousQueue();
565		ExecutorService executor = Executors.newFixedThreadPool(2);
462	–	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
477	–	executor.execute(new Runnable() {
478	–	public void run() {
479	–	try {
480	–	Thread.sleep(SMALL_DELAY_MS);
481	–	threadAssertEquals(one, q.take());
482	–	}
483	–	catch (InterruptedException e) {
484	–	threadUnexpectedException();
485	–	}
486	–	}
487	–	});
488	–
580		joinPool(executor);
490	–
581		}
582
583		/**
584	<	*
584	>	* poll retrieves elements across Executor threads
585		*/
586		public void testPollInExecutor() {
497	–
587		final SynchronousQueue q = new SynchronousQueue();
499	–
588		ExecutorService executor = Executors.newFixedThreadPool(2);
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
502	–	executor.execute(new Runnable() {
503	–	public void run() {
504	–	threadAssertNull(q.poll());
505	–	try {
506	–	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
507	–	threadAssertTrue(q.isEmpty());
508	–	}
509	–	catch (InterruptedException e) {
510	–	threadUnexpectedException();
511	–	}
512	–	}
513	–	});
514	–
515	–	executor.execute(new Runnable() {
516	–	public void run() {
517	–	try {
518	–	Thread.sleep(SMALL_DELAY_MS);
519	–	q.put(new Integer(1));
520	–	}
521	–	catch (InterruptedException e) {
522	–	threadUnexpectedException();
523	–	}
524	–	}
525	–	});
526	–
602		joinPool(executor);
603	+	}
604	+
605	+	/**
606	+	* a deserialized serialized queue is usable
607	+	*/
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	<	*
624	>	* drainTo(null) throws NPE
625		*/
626	<	public void testSerialization() {
626	>	public void testDrainToNull() {
627		SynchronousQueue q = new SynchronousQueue();
628		try {
629	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
630	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
631	<	out.writeObject(q);
632	<	out.close();
633	<
634	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
635	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
636	<	SynchronousQueue r = (SynchronousQueue)in.readObject();
637	<	assertEquals(q.size(), r.size());
638	<	while (!q.isEmpty())
639	<	assertEquals(q.remove(), r.remove());
640	<	} catch(Exception e){
641	<	unexpectedException();
642	<	}
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	>	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	>	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
728		}

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines