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Comparing jsr166/src/test/tck/SynchronousQueueTest.java (file contents):
Revision 1.20 by jsr166, Tue Dec 1 09:48:12 2009 UTC vs.
Revision 1.41 by jsr166, Thu Dec 8 19:09:58 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
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.*;
10	>	import java.util.Arrays;
11	>	import java.util.ArrayList;
12	>	import java.util.Collection;
13	>	import java.util.Iterator;
14	>	import java.util.NoSuchElementException;
15	>	import java.util.Queue;
16	>	import java.util.concurrent.BlockingQueue;
17	>	import java.util.concurrent.CountDownLatch;
18	>	import java.util.concurrent.Executors;
19	>	import java.util.concurrent.ExecutorService;
20	>	import java.util.concurrent.SynchronousQueue;
21		import static java.util.concurrent.TimeUnit.MILLISECONDS;
13	–	import java.io.*;
22
23		public class SynchronousQueueTest extends JSR166TestCase {
24
25	<	public static void main(String[] args) {
26	<	junit.textui.TestRunner.run (suite());
25	>	public static class Fair extends BlockingQueueTest {
26	>	protected BlockingQueue emptyCollection() {
27	>	return new SynchronousQueue(true);
28	>	}
29		}
30
31	<	public static Test suite() {
32	<	return new TestSuite(SynchronousQueueTest.class);
31	>	public static class NonFair extends BlockingQueueTest {
32	>	protected BlockingQueue emptyCollection() {
33	>	return new SynchronousQueue(false);
34	>	}
35		}
36
37	<	/**
38	<	* A SynchronousQueue is both empty and full
39	<	*/
40	<	public void testEmptyFull() {
41	<	SynchronousQueue q = new SynchronousQueue();
42	<	assertTrue(q.isEmpty());
43	<	assertEquals(0, q.size());
44	<	assertEquals(0, q.remainingCapacity());
33	<	assertFalse(q.offer(zero));
37	>	public static void main(String[] args) {
38	>	junit.textui.TestRunner.run(suite());
39	>	}
40	>
41	>	public static Test suite() {
42	>	return newTestSuite(SynchronousQueueTest.class,
43	>	new Fair().testSuite(),
44	>	new NonFair().testSuite());
45		}
46
47		/**
48	<	* A fair SynchronousQueue is both empty and full
48	>	* Any SynchronousQueue is both empty and full
49		*/
50	<	public void testFairEmptyFull() {
51	<	SynchronousQueue q = new SynchronousQueue(true);
50	>	public void testEmptyFull()      { testEmptyFull(false); }
51	>	public void testEmptyFull_fair() { testEmptyFull(true); }
52	>	public void testEmptyFull(boolean fair) {
53	>	final SynchronousQueue q = new SynchronousQueue(fair);
54		assertTrue(q.isEmpty());
55		assertEquals(0, q.size());
56		assertEquals(0, q.remainingCapacity());
#	Line 45 | Line 58 | public class SynchronousQueueTest extend
58		}
59
60		/**
48	–	* offer(null) throws NPE
49	–	*/
50	–	public void testOfferNull() {
51	–	try {
52	–	SynchronousQueue q = new SynchronousQueue();
53	–	q.offer(null);
54	–	shouldThrow();
55	–	} catch (NullPointerException success) {}
56	–	}
57	–
58	–	/**
59	–	* add(null) throws NPE
60	–	*/
61	–	public void testAddNull() {
62	–	try {
63	–	SynchronousQueue q = new SynchronousQueue();
64	–	q.add(null);
65	–	shouldThrow();
66	–	} catch (NullPointerException success) {}
67	–	}
68	–
69	–	/**
61		* offer fails if no active taker
62		*/
63	<	public void testOffer() {
64	<	SynchronousQueue q = new SynchronousQueue();
63	>	public void testOffer()      { testOffer(false); }
64	>	public void testOffer_fair() { testOffer(true); }
65	>	public void testOffer(boolean fair) {
66	>	SynchronousQueue q = new SynchronousQueue(fair);
67		assertFalse(q.offer(one));
68		}
69
70		/**
71	<	* add throws ISE if no active taker
71	>	* add throws IllegalStateException if no active taker
72		*/
73	<	public void testAdd() {
73	>	public void testAdd()      { testAdd(false); }
74	>	public void testAdd_fair() { testAdd(true); }
75	>	public void testAdd(boolean fair) {
76	>	SynchronousQueue q = new SynchronousQueue(fair);
77	>	assertEquals(0, q.remainingCapacity());
78		try {
82	–	SynchronousQueue q = new SynchronousQueue();
83	–	assertEquals(0, q.remainingCapacity());
79		q.add(one);
80		shouldThrow();
81		} catch (IllegalStateException success) {}
82		}
83
84		/**
85	<	* addAll(null) throws NPE
91	<	*/
92	<	public void testAddAll1() {
93	<	try {
94	<	SynchronousQueue q = new SynchronousQueue();
95	<	q.addAll(null);
96	<	shouldThrow();
97	<	} catch (NullPointerException success) {}
98	<	}
99	<
100	<	/**
101	<	* addAll(this) throws IAE
85	>	* addAll(this) throws IllegalArgumentException
86		*/
87	<	public void testAddAllSelf() {
87	>	public void testAddAll_self()      { testAddAll_self(false); }
88	>	public void testAddAll_self_fair() { testAddAll_self(true); }
89	>	public void testAddAll_self(boolean fair) {
90	>	SynchronousQueue q = new SynchronousQueue(fair);
91		try {
105	–	SynchronousQueue q = new SynchronousQueue();
92		q.addAll(q);
93		shouldThrow();
94		} catch (IllegalArgumentException success) {}
95		}
96
97		/**
112	–	* addAll of a collection with null elements throws NPE
113	–	*/
114	–	public void testAddAll2() {
115	–	try {
116	–	SynchronousQueue q = new SynchronousQueue();
117	–	Integer[] ints = new Integer[1];
118	–	q.addAll(Arrays.asList(ints));
119	–	shouldThrow();
120	–	} catch (NullPointerException success) {}
121	–	}
122	–	/**
98		* addAll throws ISE if no active taker
99		*/
100	<	public void testAddAll4() {
100	>	public void testAddAll_ISE()      { testAddAll_ISE(false); }
101	>	public void testAddAll_ISE_fair() { testAddAll_ISE(true); }
102	>	public void testAddAll_ISE(boolean fair) {
103	>	SynchronousQueue q = new SynchronousQueue(fair);
104	>	Integer[] ints = new Integer[1];
105	>	for (int i = 0; i < ints.length; i++)
106	>	ints[i] = i;
107	>	Collection<Integer> coll = Arrays.asList(ints);
108		try {
109	<	SynchronousQueue q = new SynchronousQueue();
128	<	Integer[] ints = new Integer[1];
129	<	for (int i = 0; i < 1; ++i)
130	<	ints[i] = new Integer(i);
131	<	q.addAll(Arrays.asList(ints));
109	>	q.addAll(coll);
110		shouldThrow();
111		} catch (IllegalStateException success) {}
112		}
113
114		/**
137	–	* put(null) throws NPE
138	–	*/
139	–	public void testPutNull() throws InterruptedException {
140	–	try {
141	–	SynchronousQueue q = new SynchronousQueue();
142	–	q.put(null);
143	–	shouldThrow();
144	–	} catch (NullPointerException success) {}
145	–	}
146	–
147	–	/**
115		* put blocks interruptibly if no active taker
116		*/
117	<	public void testBlockingPut() throws InterruptedException {
118	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
117	>	public void testBlockingPut()      { testBlockingPut(false); }
118	>	public void testBlockingPut_fair() { testBlockingPut(true); }
119	>	public void testBlockingPut(boolean fair) {
120	>	final SynchronousQueue q = new SynchronousQueue(fair);
121	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
122	>	Thread t = newStartedThread(new CheckedRunnable() {
123		public void realRun() throws InterruptedException {
124	<	SynchronousQueue q = new SynchronousQueue();
154	<	q.put(zero);
155	<	}});
156	<
157	<	t.start();
158	<	Thread.sleep(SHORT_DELAY_MS);
159	<	t.interrupt();
160	<	t.join();
161	<	}
162	<
163	<	/**
164	<	* put blocks waiting for take
165	<	*/
166	<	public void testPutWithTake() throws InterruptedException {
167	<	final SynchronousQueue q = new SynchronousQueue();
168	<	Thread t = new Thread(new CheckedRunnable() {
169	<	public void realRun() throws InterruptedException {
170	<	int added = 0;
124	>	Thread.currentThread().interrupt();
125		try {
126	<	while (true) {
127	<	q.put(added);
128	<	++added;
129	<	}
176	<	} catch (InterruptedException success) {
177	<	assertTrue(added == 1);
178	<	}
179	<	}});
180	<
181	<	t.start();
182	<	Thread.sleep(SHORT_DELAY_MS);
183	<	assertEquals(0, q.take());
184	<	Thread.sleep(SHORT_DELAY_MS);
185	<	t.interrupt();
186	<	t.join();
187	<	}
188	<
189	<	/**
190	<	* timed offer times out if elements not taken
191	<	*/
192	<	public void testTimedOffer() throws InterruptedException {
193	<	final SynchronousQueue q = new SynchronousQueue();
194	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
195	<	public void realRun() throws InterruptedException {
196	<	assertFalse(q.offer(new Object(), SHORT_DELAY_MS, MILLISECONDS));
197	<	q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS);
198	<	}});
199	<
200	<	t.start();
201	<	Thread.sleep(SMALL_DELAY_MS);
202	<	t.interrupt();
203	<	t.join();
204	<	}
205	<
126	>	q.put(99);
127	>	shouldThrow();
128	>	} catch (InterruptedException success) {}
129	>	assertFalse(Thread.interrupted());
130
131	<	/**
132	<	* take blocks interruptibly when empty
133	<	*/
134	<	public void testTakeFromEmpty() throws InterruptedException {
135	<	final SynchronousQueue q = new SynchronousQueue();
136	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
213	<	public void realRun() throws InterruptedException {
214	<	q.take();
131	>	pleaseInterrupt.countDown();
132	>	try {
133	>	q.put(99);
134	>	shouldThrow();
135	>	} catch (InterruptedException success) {}
136	>	assertFalse(Thread.interrupted());
137		}});
138
139	<	t.start();
140	<	Thread.sleep(SHORT_DELAY_MS);
139	>	await(pleaseInterrupt);
140	>	assertThreadStaysAlive(t);
141		t.interrupt();
142	<	t.join();
142	>	awaitTermination(t);
143	>	assertEquals(0, q.remainingCapacity());
144		}
145
223	–
146		/**
147	<	* put blocks interruptibly if no active taker
147	>	* put blocks interruptibly waiting for take
148		*/
149	<	public void testFairBlockingPut() throws InterruptedException {
150	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
149	>	public void testPutWithTake()      { testPutWithTake(false); }
150	>	public void testPutWithTake_fair() { testPutWithTake(true); }
151	>	public void testPutWithTake(boolean fair) {
152	>	final SynchronousQueue q = new SynchronousQueue(fair);
153	>	final CountDownLatch pleaseTake = new CountDownLatch(1);
154	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
155	>	Thread t = newStartedThread(new CheckedRunnable() {
156		public void realRun() throws InterruptedException {
157	<	SynchronousQueue q = new SynchronousQueue(true);
158	<	q.put(zero);
232	<	}});
233	<
234	<	t.start();
235	<	Thread.sleep(SHORT_DELAY_MS);
236	<	t.interrupt();
237	<	t.join();
238	<	}
157	>	pleaseTake.countDown();
158	>	q.put(one);
159
160	<	/**
241	<	* put blocks waiting for take
242	<	*/
243	<	public void testFairPutWithTake() throws InterruptedException {
244	<	final SynchronousQueue q = new SynchronousQueue(true);
245	<	Thread t = new Thread(new CheckedRunnable() {
246	<	public void realRun() throws InterruptedException {
247	<	int added = 0;
160	>	pleaseInterrupt.countDown();
161		try {
162	<	while (true) {
163	<	q.put(added);
164	<	++added;
165	<	}
253	<	} catch (InterruptedException success) {
254	<	assertTrue(added == 1);
255	<	}
162	>	q.put(99);
163	>	shouldThrow();
164	>	} catch (InterruptedException success) {}
165	>	assertFalse(Thread.interrupted());
166		}});
167
168	<	t.start();
169	<	Thread.sleep(SHORT_DELAY_MS);
170	<	assertEquals(0, q.take());
171	<	Thread.sleep(SHORT_DELAY_MS);
262	<	t.interrupt();
263	<	t.join();
264	<	}
265	<
266	<	/**
267	<	* timed offer times out if elements not taken
268	<	*/
269	<	public void testFairTimedOffer() throws InterruptedException {
270	<	final SynchronousQueue q = new SynchronousQueue(true);
271	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
272	<	public void realRun() throws InterruptedException {
273	<	assertFalse(q.offer(new Object(), SHORT_DELAY_MS, MILLISECONDS));
274	<	q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS);
275	<	}});
168	>	await(pleaseTake);
169	>	assertEquals(0, q.remainingCapacity());
170	>	try { assertSame(one, q.take()); }
171	>	catch (InterruptedException e) { threadUnexpectedException(e); }
172
173	<	t.start();
174	<	Thread.sleep(SMALL_DELAY_MS);
173	>	await(pleaseInterrupt);
174	>	assertThreadStaysAlive(t);
175		t.interrupt();
176	<	t.join();
176	>	awaitTermination(t);
177	>	assertEquals(0, q.remainingCapacity());
178		}
179
283	–
180		/**
181	<	* take blocks interruptibly when empty
181	>	* timed offer times out if elements not taken
182		*/
183	<	public void testFairTakeFromEmpty() throws InterruptedException {
184	<	final SynchronousQueue q = new SynchronousQueue(true);
185	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
186	<	public void realRun() throws InterruptedException {
187	<	q.take();
183	>	public void testTimedOffer()      { testTimedOffer(false); }
184	>	public void testTimedOffer_fair() { testTimedOffer(true); }
185	>	public void testTimedOffer(boolean fair) {
186	>	final SynchronousQueue q = new SynchronousQueue(fair);
187	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
188	>	Thread t = newStartedThread(new CheckedRunnable() {
189	>	public void realRun() throws InterruptedException {
190	>	long startTime = System.nanoTime();
191	>	assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS));
192	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
193	>	pleaseInterrupt.countDown();
194	>	try {
195	>	q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS);
196	>	shouldThrow();
197	>	} catch (InterruptedException success) {}
198		}});
199
200	<	t.start();
201	<	Thread.sleep(SHORT_DELAY_MS);
200	>	await(pleaseInterrupt);
201	>	assertThreadStaysAlive(t);
202		t.interrupt();
203	<	t.join();
203	>	awaitTermination(t);
204		}
205
206		/**
207	<	* poll fails unless active taker
207	>	* poll return null if no active putter
208		*/
209	<	public void testPoll() {
210	<	SynchronousQueue q = new SynchronousQueue();
209	>	public void testPoll()      { testPoll(false); }
210	>	public void testPoll_fair() { testPoll(true); }
211	>	public void testPoll(boolean fair) {
212	>	final SynchronousQueue q = new SynchronousQueue(fair);
213		assertNull(q.poll());
214		}
215
216		/**
217	<	* timed pool with zero timeout times out if no active taker
217	>	* timed poll with zero timeout times out if no active putter
218		*/
219	<	public void testTimedPoll0() throws InterruptedException {
220	<	SynchronousQueue q = new SynchronousQueue();
221	<	assertNull(q.poll(0, MILLISECONDS));
219	>	public void testTimedPoll0()      { testTimedPoll0(false); }
220	>	public void testTimedPoll0_fair() { testTimedPoll0(true); }
221	>	public void testTimedPoll0(boolean fair) {
222	>	final SynchronousQueue q = new SynchronousQueue(fair);
223	>	try { assertNull(q.poll(0, MILLISECONDS)); }
224	>	catch (InterruptedException e) { threadUnexpectedException(e); }
225		}
226
227		/**
228	<	* timed pool with nonzero timeout times out if no active taker
228	>	* timed poll with nonzero timeout times out if no active putter
229		*/
230	<	public void testTimedPoll() throws InterruptedException {
231	<	SynchronousQueue q = new SynchronousQueue();
232	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
230	>	public void testTimedPoll()      { testTimedPoll(false); }
231	>	public void testTimedPoll_fair() { testTimedPoll(true); }
232	>	public void testTimedPoll(boolean fair) {
233	>	final SynchronousQueue q = new SynchronousQueue(fair);
234	>	long startTime = System.nanoTime();
235	>	try { assertNull(q.poll(timeoutMillis(), MILLISECONDS)); }
236	>	catch (InterruptedException e) { threadUnexpectedException(e); }
237	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
238		}
239
240		/**
241	<	* Interrupted timed poll throws InterruptedException instead of
242	<	* returning timeout status
241	>	* timed poll before a delayed offer times out, returning null;
242	>	* after offer succeeds; on interruption throws
243		*/
244	<	public void testInterruptedTimedPoll() throws InterruptedException {
245	<	final SynchronousQueue q = new SynchronousQueue();
246	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
244	>	public void testTimedPollWithOffer()      { testTimedPollWithOffer(false); }
245	>	public void testTimedPollWithOffer_fair() { testTimedPollWithOffer(true); }
246	>	public void testTimedPollWithOffer(boolean fair) {
247	>	final SynchronousQueue q = new SynchronousQueue(fair);
248	>	final CountDownLatch pleaseOffer = new CountDownLatch(1);
249	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
250	>	Thread t = newStartedThread(new CheckedRunnable() {
251		public void realRun() throws InterruptedException {
252	<	q.poll(SMALL_DELAY_MS, MILLISECONDS);
253	<	}});
252	>	long startTime = System.nanoTime();
253	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
254	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
255
256	<	t.start();
257	<	Thread.sleep(SHORT_DELAY_MS);
337	<	t.interrupt();
338	<	t.join();
339	<	}
340	<
341	<	/**
342	<	*  timed poll before a delayed offer fails; after offer succeeds;
343	<	*  on interruption throws
344	<	*/
345	<	public void testTimedPollWithOffer() throws InterruptedException {
346	<	final SynchronousQueue q = new SynchronousQueue();
347	<	Thread t = new Thread(new CheckedRunnable() {
348	<	public void realRun() throws InterruptedException {
349	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
256	>	pleaseOffer.countDown();
257	>	startTime = System.nanoTime();
258		assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS));
259	+	assertTrue(millisElapsedSince(startTime) < MEDIUM_DELAY_MS);
260	+
261	+	Thread.currentThread().interrupt();
262		try {
263		q.poll(LONG_DELAY_MS, MILLISECONDS);
264		shouldThrow();
265		} catch (InterruptedException success) {}
266	<	}});
356	<
357	<	t.start();
358	<	Thread.sleep(SMALL_DELAY_MS);
359	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
360	<	t.interrupt();
361	<	t.join();
362	<	}
363	<
364	<	/**
365	<	* Interrupted timed poll throws InterruptedException instead of
366	<	* returning timeout status
367	<	*/
368	<	public void testFairInterruptedTimedPoll() throws InterruptedException {
369	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
370	<	public void realRun() throws InterruptedException {
371	<	SynchronousQueue q = new SynchronousQueue(true);
372	<	q.poll(SMALL_DELAY_MS, MILLISECONDS);
373	<	}});
266	>	assertFalse(Thread.interrupted());
267
268	<	t.start();
376	<	Thread.sleep(SHORT_DELAY_MS);
377	<	t.interrupt();
378	<	t.join();
379	<	}
380	<
381	<	/**
382	<	*  timed poll before a delayed offer fails; after offer succeeds;
383	<	*  on interruption throws
384	<	*/
385	<	public void testFairTimedPollWithOffer() throws InterruptedException {
386	<	final SynchronousQueue q = new SynchronousQueue(true);
387	<	Thread t = new Thread(new CheckedRunnable() {
388	<	public void realRun() throws InterruptedException {
389	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
390	<	assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS));
268	>	pleaseInterrupt.countDown();
269		try {
270		q.poll(LONG_DELAY_MS, MILLISECONDS);
271	<	threadShouldThrow();
271	>	shouldThrow();
272		} catch (InterruptedException success) {}
273	+	assertFalse(Thread.interrupted());
274		}});
275
276	<	t.start();
277	<	Thread.sleep(SMALL_DELAY_MS);
278	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
276	>	await(pleaseOffer);
277	>	long startTime = System.nanoTime();
278	>	try { assertTrue(q.offer(zero, LONG_DELAY_MS, MILLISECONDS)); }
279	>	catch (InterruptedException e) { threadUnexpectedException(e); }
280	>	assertTrue(millisElapsedSince(startTime) < MEDIUM_DELAY_MS);
281	>
282	>	await(pleaseInterrupt);
283	>	assertThreadStaysAlive(t);
284		t.interrupt();
285	<	t.join();
285	>	awaitTermination(t);
286		}
287
404	–
288		/**
289	<	* peek returns null
289	>	* peek() returns null if no active putter
290		*/
291	<	public void testPeek() {
292	<	SynchronousQueue q = new SynchronousQueue();
291	>	public void testPeek()      { testPeek(false); }
292	>	public void testPeek_fair() { testPeek(true); }
293	>	public void testPeek(boolean fair) {
294	>	final SynchronousQueue q = new SynchronousQueue(fair);
295		assertNull(q.peek());
296		}
297
298		/**
299	<	* element throws NSEE
299	>	* element() throws NoSuchElementException if no active putter
300		*/
301	<	public void testElement() {
302	<	SynchronousQueue q = new SynchronousQueue();
301	>	public void testElement()      { testElement(false); }
302	>	public void testElement_fair() { testElement(true); }
303	>	public void testElement(boolean fair) {
304	>	final SynchronousQueue q = new SynchronousQueue(fair);
305		try {
306		q.element();
307		shouldThrow();
#	Line 422 | Line 309 | public class SynchronousQueueTest extend
309		}
310
311		/**
312	<	* remove throws NSEE if no active taker
312	>	* remove() throws NoSuchElementException if no active putter
313		*/
314	<	public void testRemove() {
315	<	SynchronousQueue q = new SynchronousQueue();
314	>	public void testRemove()      { testRemove(false); }
315	>	public void testRemove_fair() { testRemove(true); }
316	>	public void testRemove(boolean fair) {
317	>	final SynchronousQueue q = new SynchronousQueue(fair);
318		try {
319		q.remove();
320		shouldThrow();
#	Line 433 | Line 322 | public class SynchronousQueueTest extend
322		}
323
324		/**
436	–	* remove(x) returns false
437	–	*/
438	–	public void testRemoveElement() {
439	–	SynchronousQueue q = new SynchronousQueue();
440	–	assertFalse(q.remove(zero));
441	–	assertTrue(q.isEmpty());
442	–	}
443	–
444	–	/**
325		* contains returns false
326		*/
327	<	public void testContains() {
328	<	SynchronousQueue q = new SynchronousQueue();
327	>	public void testContains()      { testContains(false); }
328	>	public void testContains_fair() { testContains(true); }
329	>	public void testContains(boolean fair) {
330	>	final SynchronousQueue q = new SynchronousQueue(fair);
331		assertFalse(q.contains(zero));
332		}
333
334		/**
335		* clear ensures isEmpty
336		*/
337	<	public void testClear() {
338	<	SynchronousQueue q = new SynchronousQueue();
337	>	public void testClear()      { testClear(false); }
338	>	public void testClear_fair() { testClear(true); }
339	>	public void testClear(boolean fair) {
340	>	final SynchronousQueue q = new SynchronousQueue(fair);
341		q.clear();
342		assertTrue(q.isEmpty());
343		}
#	Line 461 | Line 345 | public class SynchronousQueueTest extend
345		/**
346		* containsAll returns false unless empty
347		*/
348	<	public void testContainsAll() {
349	<	SynchronousQueue q = new SynchronousQueue();
348	>	public void testContainsAll()      { testContainsAll(false); }
349	>	public void testContainsAll_fair() { testContainsAll(true); }
350	>	public void testContainsAll(boolean fair) {
351	>	final SynchronousQueue q = new SynchronousQueue(fair);
352		Integer[] empty = new Integer[0];
353		assertTrue(q.containsAll(Arrays.asList(empty)));
354		Integer[] ints = new Integer[1]; ints[0] = zero;
#	Line 472 | Line 358 | public class SynchronousQueueTest extend
358		/**
359		* retainAll returns false
360		*/
361	<	public void testRetainAll() {
362	<	SynchronousQueue q = new SynchronousQueue();
361	>	public void testRetainAll()      { testRetainAll(false); }
362	>	public void testRetainAll_fair() { testRetainAll(true); }
363	>	public void testRetainAll(boolean fair) {
364	>	final SynchronousQueue q = new SynchronousQueue(fair);
365		Integer[] empty = new Integer[0];
366		assertFalse(q.retainAll(Arrays.asList(empty)));
367		Integer[] ints = new Integer[1]; ints[0] = zero;
#	Line 483 | Line 371 | public class SynchronousQueueTest extend
371		/**
372		* removeAll returns false
373		*/
374	<	public void testRemoveAll() {
375	<	SynchronousQueue q = new SynchronousQueue();
374	>	public void testRemoveAll()      { testRemoveAll(false); }
375	>	public void testRemoveAll_fair() { testRemoveAll(true); }
376	>	public void testRemoveAll(boolean fair) {
377	>	final SynchronousQueue q = new SynchronousQueue(fair);
378		Integer[] empty = new Integer[0];
379		assertFalse(q.removeAll(Arrays.asList(empty)));
380		Integer[] ints = new Integer[1]; ints[0] = zero;
381		assertFalse(q.containsAll(Arrays.asList(ints)));
382		}
383
494	–
384		/**
385		* toArray is empty
386		*/
387	<	public void testToArray() {
388	<	SynchronousQueue q = new SynchronousQueue();
387	>	public void testToArray()      { testToArray(false); }
388	>	public void testToArray_fair() { testToArray(true); }
389	>	public void testToArray(boolean fair) {
390	>	final SynchronousQueue q = new SynchronousQueue(fair);
391		Object[] o = q.toArray();
392	<	assertEquals(o.length, 0);
392	>	assertEquals(0, o.length);
393		}
394
395		/**
396	<	* toArray(a) is nulled at position 0
396	>	* toArray(Integer array) returns its argument with the first
397	>	* element (if present) nulled out
398		*/
399	<	public void testToArray2() {
400	<	SynchronousQueue q = new SynchronousQueue();
401	<	Integer[] ints = new Integer[1];
402	<	assertNull(ints[0]);
399	>	public void testToArray2()      { testToArray2(false); }
400	>	public void testToArray2_fair() { testToArray2(true); }
401	>	public void testToArray2(boolean fair) {
402	>	final SynchronousQueue<Integer> q
403	>	= new SynchronousQueue<Integer>(fair);
404	>	Integer[] a;
405	>
406	>	a = new Integer[0];
407	>	assertSame(a, q.toArray(a));
408	>
409	>	a = new Integer[3];
410	>	Arrays.fill(a, 42);
411	>	assertSame(a, q.toArray(a));
412	>	assertNull(a[0]);
413	>	for (int i = 1; i < a.length; i++)
414	>	assertEquals(42, (int) a[i]);
415		}
416
417		/**
418		* toArray(null) throws NPE
419		*/
420	<	public void testToArray_BadArg() {
421	<	SynchronousQueue q = new SynchronousQueue();
420	>	public void testToArray_null()      { testToArray_null(false); }
421	>	public void testToArray_null_fair() { testToArray_null(true); }
422	>	public void testToArray_null(boolean fair) {
423	>	final SynchronousQueue q = new SynchronousQueue(fair);
424		try {
425		Object o[] = q.toArray(null);
426		shouldThrow();
427		} catch (NullPointerException success) {}
428		}
429
524	–
430		/**
431		* iterator does not traverse any elements
432		*/
433	<	public void testIterator() {
434	<	SynchronousQueue q = new SynchronousQueue();
433	>	public void testIterator()      { testIterator(false); }
434	>	public void testIterator_fair() { testIterator(true); }
435	>	public void testIterator(boolean fair) {
436	>	final SynchronousQueue q = new SynchronousQueue(fair);
437		Iterator it = q.iterator();
438		assertFalse(it.hasNext());
439		try {
#	Line 538 | Line 445 | public class SynchronousQueueTest extend
445		/**
446		* iterator remove throws ISE
447		*/
448	<	public void testIteratorRemove() {
449	<	SynchronousQueue q = new SynchronousQueue();
448	>	public void testIteratorRemove()      { testIteratorRemove(false); }
449	>	public void testIteratorRemove_fair() { testIteratorRemove(true); }
450	>	public void testIteratorRemove(boolean fair) {
451	>	final SynchronousQueue q = new SynchronousQueue(fair);
452		Iterator it = q.iterator();
453		try {
454		it.remove();
#	Line 550 | Line 459 | public class SynchronousQueueTest extend
459		/**
460		* toString returns a non-null string
461		*/
462	<	public void testToString() {
463	<	SynchronousQueue q = new SynchronousQueue();
462	>	public void testToString()      { testToString(false); }
463	>	public void testToString_fair() { testToString(true); }
464	>	public void testToString(boolean fair) {
465	>	final SynchronousQueue q = new SynchronousQueue(fair);
466		String s = q.toString();
467		assertNotNull(s);
468		}
469
559	–
470		/**
471		* offer transfers elements across Executor tasks
472		*/
473	<	public void testOfferInExecutor() {
474	<	final SynchronousQueue q = new SynchronousQueue();
473	>	public void testOfferInExecutor()      { testOfferInExecutor(false); }
474	>	public void testOfferInExecutor_fair() { testOfferInExecutor(true); }
475	>	public void testOfferInExecutor(boolean fair) {
476	>	final SynchronousQueue q = new SynchronousQueue(fair);
477		ExecutorService executor = Executors.newFixedThreadPool(2);
478	+	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
479
480		executor.execute(new CheckedRunnable() {
481		public void realRun() throws InterruptedException {
482		assertFalse(q.offer(one));
483	<	assertTrue(q.offer(one, MEDIUM_DELAY_MS, MILLISECONDS));
483	>	threadsStarted.await();
484	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
485		assertEquals(0, q.remainingCapacity());
486		}});
487
488		executor.execute(new CheckedRunnable() {
489		public void realRun() throws InterruptedException {
490	<	Thread.sleep(SMALL_DELAY_MS);
490	>	threadsStarted.await();
491		assertSame(one, q.take());
492		}});
493
#	Line 581 | Line 495 | public class SynchronousQueueTest extend
495		}
496
497		/**
498	<	* poll retrieves elements across Executor threads
498	>	* timed poll retrieves elements across Executor threads
499		*/
500	<	public void testPollInExecutor() {
501	<	final SynchronousQueue q = new SynchronousQueue();
500	>	public void testPollInExecutor()      { testPollInExecutor(false); }
501	>	public void testPollInExecutor_fair() { testPollInExecutor(true); }
502	>	public void testPollInExecutor(boolean fair) {
503	>	final SynchronousQueue q = new SynchronousQueue(fair);
504	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
505		ExecutorService executor = Executors.newFixedThreadPool(2);
506		executor.execute(new CheckedRunnable() {
507		public void realRun() throws InterruptedException {
508		assertNull(q.poll());
509	<	assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
509	>	threadsStarted.await();
510	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
511		assertTrue(q.isEmpty());
512		}});
513
514		executor.execute(new CheckedRunnable() {
515		public void realRun() throws InterruptedException {
516	<	Thread.sleep(SHORT_DELAY_MS);
516	>	threadsStarted.await();
517		q.put(one);
518		}});
519
#	Line 605 | Line 523 | public class SynchronousQueueTest extend
523		/**
524		* a deserialized serialized queue is usable
525		*/
526	<	public void testSerialization() throws Exception {
527	<	SynchronousQueue q = new SynchronousQueue();
528	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
529	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
530	<	out.writeObject(q);
531	<	out.close();
532	<
533	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
534	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
535	<	SynchronousQueue r = (SynchronousQueue)in.readObject();
536	<	assertEquals(q.size(), r.size());
537	<	while (!q.isEmpty())
538	<	assertEquals(q.remove(), r.remove());
539	<	}
540	<
541	<	/**
624	<	* drainTo(null) throws NPE
625	<	*/
626	<	public void testDrainToNull() {
627	<	SynchronousQueue q = new SynchronousQueue();
628	<	try {
629	<	q.drainTo(null);
630	<	shouldThrow();
631	<	} catch (NullPointerException success) {}
632	<	}
633	<
634	<	/**
635	<	* drainTo(this) throws IAE
636	<	*/
637	<	public void testDrainToSelf() {
638	<	SynchronousQueue q = new SynchronousQueue();
639	<	try {
640	<	q.drainTo(q);
641	<	shouldThrow();
642	<	} catch (IllegalArgumentException success) {}
526	>	public void testSerialization() {
527	>	final SynchronousQueue x = new SynchronousQueue();
528	>	final SynchronousQueue y = new SynchronousQueue(false);
529	>	final SynchronousQueue z = new SynchronousQueue(true);
530	>	assertSerialEquals(x, y);
531	>	assertNotSerialEquals(x, z);
532	>	SynchronousQueue[] qs = { x, y, z };
533	>	for (SynchronousQueue q : qs) {
534	>	SynchronousQueue clone = serialClone(q);
535	>	assertNotSame(q, clone);
536	>	assertSerialEquals(q, clone);
537	>	assertTrue(clone.isEmpty());
538	>	assertEquals(0, clone.size());
539	>	assertEquals(0, clone.remainingCapacity());
540	>	assertFalse(clone.offer(zero));
541	>	}
542		}
543
544		/**
545		* drainTo(c) of empty queue doesn't transfer elements
546		*/
547	<	public void testDrainTo() {
548	<	SynchronousQueue q = new SynchronousQueue();
547	>	public void testDrainTo()      { testDrainTo(false); }
548	>	public void testDrainTo_fair() { testDrainTo(true); }
549	>	public void testDrainTo(boolean fair) {
550	>	final SynchronousQueue q = new SynchronousQueue(fair);
551		ArrayList l = new ArrayList();
552		q.drainTo(l);
553	<	assertEquals(q.size(), 0);
554	<	assertEquals(l.size(), 0);
553	>	assertEquals(0, q.size());
554	>	assertEquals(0, l.size());
555		}
556
557		/**
558		* drainTo empties queue, unblocking a waiting put.
559		*/
560	<	public void testDrainToWithActivePut() throws InterruptedException {
561	<	final SynchronousQueue q = new SynchronousQueue();
562	<	Thread t = new Thread(new CheckedRunnable() {
560	>	public void testDrainToWithActivePut()      { testDrainToWithActivePut(false); }
561	>	public void testDrainToWithActivePut_fair() { testDrainToWithActivePut(true); }
562	>	public void testDrainToWithActivePut(boolean fair) {
563	>	final SynchronousQueue q = new SynchronousQueue(fair);
564	>	Thread t = newStartedThread(new CheckedRunnable() {
565		public void realRun() throws InterruptedException {
566	<	q.put(new Integer(1));
566	>	q.put(one);
567		}});
568
666	–	t.start();
569		ArrayList l = new ArrayList();
570	<	Thread.sleep(SHORT_DELAY_MS);
571	<	q.drainTo(l);
572	<	assertTrue(l.size() <= 1);
573	<	if (l.size() > 0)
574	<	assertEquals(l.get(0), new Integer(1));
575	<	t.join();
576	<	assertTrue(l.size() <= 1);
577	<	}
578	<
579	<	/**
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) {}
570	>	long startTime = System.nanoTime();
571	>	while (l.isEmpty()) {
572	>	q.drainTo(l);
573	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
574	>	fail("timed out");
575	>	Thread.yield();
576	>	}
577	>	assertTrue(l.size() == 1);
578	>	assertSame(one, l.get(0));
579	>	awaitTermination(t);
580		}
581
582		/**
#	Line 701 | Line 584 | public class SynchronousQueueTest extend
584		*/
585		public void testDrainToN() throws InterruptedException {
586		final SynchronousQueue q = new SynchronousQueue();
587	<	Thread t1 = new Thread(new CheckedRunnable() {
587	>	Thread t1 = newStartedThread(new CheckedRunnable() {
588		public void realRun() throws InterruptedException {
589		q.put(one);
590		}});
591
592	<	Thread t2 = new Thread(new CheckedRunnable() {
592	>	Thread t2 = newStartedThread(new CheckedRunnable() {
593		public void realRun() throws InterruptedException {
594		q.put(two);
595		}});
596
714	–	t1.start();
715	–	t2.start();
597		ArrayList l = new ArrayList();
598	<	Thread.sleep(SHORT_DELAY_MS);
598	>	delay(SHORT_DELAY_MS);
599		q.drainTo(l, 1);
600	<	assertTrue(l.size() == 1);
600	>	assertEquals(1, l.size());
601		q.drainTo(l, 1);
602	<	assertTrue(l.size() == 2);
602	>	assertEquals(2, l.size());
603		assertTrue(l.contains(one));
604		assertTrue(l.contains(two));
605	<	t1.join();
606	<	t2.join();
605	>	awaitTermination(t1);
606	>	awaitTermination(t2);
607		}
608
609		}

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