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Comparing jsr166/src/test/tck/SynchronousQueueTest.java (file contents):
Revision 1.25 by jsr166, Wed Oct 6 07:49:23 2010 UTC vs.
Revision 1.64 by jsr166, Tue Aug 13 00:54:51 2019 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.*;
9		import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	<	import java.io.*;
10	>
11	>	import java.util.ArrayList;
12	>	import java.util.Arrays;
13	>	import java.util.Collection;
14	>	import java.util.Iterator;
15	>	import java.util.NoSuchElementException;
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 java.util.concurrent.ThreadLocalRandom;
22	>
23	>	import junit.framework.Test;
24
25		public class SynchronousQueueTest extends JSR166TestCase {
26
#	Line 27 | Line 37 | public class SynchronousQueueTest extend
37		}
38
39		public static void main(String[] args) {
40	<	junit.textui.TestRunner.run(suite());
40	>	main(suite(), args);
41		}
42
43		public static Test suite() {
#	Line 37 | Line 47 | public class SynchronousQueueTest extend
47		}
48
49		/**
50	<	* A SynchronousQueue is both empty and full
50	>	* Any SynchronousQueue is both empty and full
51		*/
52	<	public void testEmptyFull() {
53	<	SynchronousQueue q = new SynchronousQueue();
52	>	public void testEmptyFull()      { testEmptyFull(false); }
53	>	public void testEmptyFull_fair() { testEmptyFull(true); }
54	>	public void testEmptyFull(boolean fair) {
55	>	final SynchronousQueue q = new SynchronousQueue(fair);
56		assertTrue(q.isEmpty());
57		assertEquals(0, q.size());
58		assertEquals(0, q.remainingCapacity());
#	Line 48 | Line 60 | public class SynchronousQueueTest extend
60		}
61
62		/**
51	–	* A fair SynchronousQueue is both empty and full
52	–	*/
53	–	public void testFairEmptyFull() {
54	–	SynchronousQueue q = new SynchronousQueue(true);
55	–	assertTrue(q.isEmpty());
56	–	assertEquals(0, q.size());
57	–	assertEquals(0, q.remainingCapacity());
58	–	assertFalse(q.offer(zero));
59	–	}
60	–
61	–	/**
62	–	* offer(null) throws NPE
63	–	*/
64	–	public void testOfferNull() {
65	–	try {
66	–	SynchronousQueue q = new SynchronousQueue();
67	–	q.offer(null);
68	–	shouldThrow();
69	–	} catch (NullPointerException success) {}
70	–	}
71	–
72	–	/**
73	–	* add(null) throws NPE
74	–	*/
75	–	public void testAddNull() {
76	–	try {
77	–	SynchronousQueue q = new SynchronousQueue();
78	–	q.add(null);
79	–	shouldThrow();
80	–	} catch (NullPointerException success) {}
81	–	}
82	–
83	–	/**
63		* offer fails if no active taker
64		*/
65	<	public void testOffer() {
66	<	SynchronousQueue q = new SynchronousQueue();
65	>	public void testOffer()      { testOffer(false); }
66	>	public void testOffer_fair() { testOffer(true); }
67	>	public void testOffer(boolean fair) {
68	>	SynchronousQueue q = new SynchronousQueue(fair);
69		assertFalse(q.offer(one));
70		}
71
72		/**
73	<	* add throws ISE if no active taker
73	>	* add throws IllegalStateException if no active taker
74		*/
75	<	public void testAdd() {
75	>	public void testAdd()      { testAdd(false); }
76	>	public void testAdd_fair() { testAdd(true); }
77	>	public void testAdd(boolean fair) {
78	>	SynchronousQueue q = new SynchronousQueue(fair);
79	>	assertEquals(0, q.remainingCapacity());
80		try {
96	–	SynchronousQueue q = new SynchronousQueue();
97	–	assertEquals(0, q.remainingCapacity());
81		q.add(one);
82		shouldThrow();
83		} catch (IllegalStateException success) {}
84		}
85
86		/**
87	<	* addAll(null) throws NPE
87	>	* addAll(this) throws IllegalArgumentException
88		*/
89	<	public void testAddAll1() {
89	>	public void testAddAll_self()      { testAddAll_self(false); }
90	>	public void testAddAll_self_fair() { testAddAll_self(true); }
91	>	public void testAddAll_self(boolean fair) {
92	>	SynchronousQueue q = new SynchronousQueue(fair);
93		try {
108	–	SynchronousQueue q = new SynchronousQueue();
109	–	q.addAll(null);
110	–	shouldThrow();
111	–	} catch (NullPointerException success) {}
112	–	}
113	–
114	–	/**
115	–	* addAll(this) throws IAE
116	–	*/
117	–	public void testAddAllSelf() {
118	–	try {
119	–	SynchronousQueue q = new SynchronousQueue();
94		q.addAll(q);
95		shouldThrow();
96		} catch (IllegalArgumentException success) {}
97		}
98
99		/**
100	<	* addAll of a collection with null elements throws NPE
127	<	*/
128	<	public void testAddAll2() {
129	<	try {
130	<	SynchronousQueue q = new SynchronousQueue();
131	<	Integer[] ints = new Integer[1];
132	<	q.addAll(Arrays.asList(ints));
133	<	shouldThrow();
134	<	} catch (NullPointerException success) {}
135	<	}
136	<
137	<	/**
138	<	* addAll throws ISE if no active taker
100	>	* addAll throws IllegalStateException if no active taker
101		*/
102	<	public void testAddAll4() {
102	>	public void testAddAll_ISE()      { testAddAll_ISE(false); }
103	>	public void testAddAll_ISE_fair() { testAddAll_ISE(true); }
104	>	public void testAddAll_ISE(boolean fair) {
105	>	SynchronousQueue q = new SynchronousQueue(fair);
106	>	Integer[] ints = new Integer[1];
107	>	for (int i = 0; i < ints.length; i++)
108	>	ints[i] = i;
109	>	Collection<Integer> coll = Arrays.asList(ints);
110		try {
111	<	SynchronousQueue q = new SynchronousQueue();
143	<	Integer[] ints = new Integer[1];
144	<	for (int i = 0; i < 1; ++i)
145	<	ints[i] = new Integer(i);
146	<	q.addAll(Arrays.asList(ints));
111	>	q.addAll(coll);
112		shouldThrow();
113		} catch (IllegalStateException success) {}
114		}
115
116		/**
152	–	* put(null) throws NPE
153	–	*/
154	–	public void testPutNull() throws InterruptedException {
155	–	try {
156	–	SynchronousQueue q = new SynchronousQueue();
157	–	q.put(null);
158	–	shouldThrow();
159	–	} catch (NullPointerException success) {}
160	–	}
161	–
162	–	/**
117		* put blocks interruptibly if no active taker
118		*/
119	<	public void testBlockingPut() throws InterruptedException {
120	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
121	<	public void realRun() throws InterruptedException {
122	<	SynchronousQueue q = new SynchronousQueue();
123	<	q.put(zero);
124	<	}});
171	<
172	<	t.start();
173	<	Thread.sleep(SHORT_DELAY_MS);
174	<	t.interrupt();
175	<	t.join();
176	<	}
177	<
178	<	/**
179	<	* put blocks waiting for take
180	<	*/
181	<	public void testPutWithTake() throws InterruptedException {
182	<	final SynchronousQueue q = new SynchronousQueue();
183	<	Thread t = new Thread(new CheckedRunnable() {
119	>	public void testBlockingPut()      { testBlockingPut(false); }
120	>	public void testBlockingPut_fair() { testBlockingPut(true); }
121	>	public void testBlockingPut(boolean fair) {
122	>	final SynchronousQueue q = new SynchronousQueue(fair);
123	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
124	>	Thread t = newStartedThread(new CheckedRunnable() {
125		public void realRun() throws InterruptedException {
126	<	int added = 0;
126	>	Thread.currentThread().interrupt();
127		try {
128	<	while (true) {
129	<	q.put(added);
130	<	++added;
131	<	}
191	<	} catch (InterruptedException success) {
192	<	assertEquals(1, added);
193	<	}
194	<	}});
195	<
196	<	t.start();
197	<	Thread.sleep(SHORT_DELAY_MS);
198	<	assertEquals(0, q.take());
199	<	Thread.sleep(SHORT_DELAY_MS);
200	<	t.interrupt();
201	<	t.join();
202	<	}
203	<
204	<	/**
205	<	* timed offer times out if elements not taken
206	<	*/
207	<	public void testTimedOffer() throws InterruptedException {
208	<	final SynchronousQueue q = new SynchronousQueue();
209	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
210	<	public void realRun() throws InterruptedException {
211	<	assertFalse(q.offer(new Object(), SHORT_DELAY_MS, MILLISECONDS));
212	<	q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS);
213	<	}});
214	<
215	<	t.start();
216	<	Thread.sleep(SMALL_DELAY_MS);
217	<	t.interrupt();
218	<	t.join();
219	<	}
220	<
128	>	q.put(99);
129	>	shouldThrow();
130	>	} catch (InterruptedException success) {}
131	>	assertFalse(Thread.interrupted());
132
133	<	/**
134	<	* take blocks interruptibly when empty
135	<	*/
136	<	public void testTakeFromEmpty() throws InterruptedException {
137	<	final SynchronousQueue q = new SynchronousQueue();
138	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
228	<	public void realRun() throws InterruptedException {
229	<	q.take();
133	>	pleaseInterrupt.countDown();
134	>	try {
135	>	q.put(99);
136	>	shouldThrow();
137	>	} catch (InterruptedException success) {}
138	>	assertFalse(Thread.interrupted());
139		}});
140
141	<	t.start();
142	<	Thread.sleep(SHORT_DELAY_MS);
141	>	await(pleaseInterrupt);
142	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
143		t.interrupt();
144	<	t.join();
144	>	awaitTermination(t);
145	>	assertEquals(0, q.remainingCapacity());
146		}
147
238	–
148		/**
149	<	* put blocks interruptibly if no active taker
149	>	* put blocks interruptibly waiting for take
150		*/
151	<	public void testFairBlockingPut() throws InterruptedException {
152	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
151	>	public void testPutWithTake()      { testPutWithTake(false); }
152	>	public void testPutWithTake_fair() { testPutWithTake(true); }
153	>	public void testPutWithTake(boolean fair) {
154	>	final SynchronousQueue q = new SynchronousQueue(fair);
155	>	final CountDownLatch pleaseTake = new CountDownLatch(1);
156	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
157	>	Thread t = newStartedThread(new CheckedRunnable() {
158		public void realRun() throws InterruptedException {
159	<	SynchronousQueue q = new SynchronousQueue(true);
160	<	q.put(zero);
247	<	}});
159	>	pleaseTake.countDown();
160	>	q.put(one);
161
162	<	t.start();
163	<	Thread.sleep(SHORT_DELAY_MS);
164	<	t.interrupt();
165	<	t.join();
166	<	}
162	>	Thread.currentThread().interrupt();
163	>	try {
164	>	q.put(99);
165	>	shouldThrow();
166	>	} catch (InterruptedException success) {}
167	>	assertFalse(Thread.interrupted());
168
169	<	/**
256	<	* put blocks waiting for take
257	<	*/
258	<	public void testFairPutWithTake() throws InterruptedException {
259	<	final SynchronousQueue q = new SynchronousQueue(true);
260	<	Thread t = new Thread(new CheckedRunnable() {
261	<	public void realRun() throws InterruptedException {
262	<	int added = 0;
169	>	pleaseInterrupt.countDown();
170		try {
171	<	while (true) {
172	<	q.put(added);
173	<	++added;
174	<	}
268	<	} catch (InterruptedException success) {
269	<	assertEquals(1, added);
270	<	}
171	>	q.put(99);
172	>	shouldThrow();
173	>	} catch (InterruptedException success) {}
174	>	assertFalse(Thread.interrupted());
175		}});
176
177	<	t.start();
178	<	Thread.sleep(SHORT_DELAY_MS);
179	<	assertEquals(0, q.take());
180	<	Thread.sleep(SHORT_DELAY_MS);
177	>	await(pleaseTake);
178	>	assertEquals(0, q.remainingCapacity());
179	>	try { assertSame(one, q.take()); }
180	>	catch (InterruptedException e) { threadUnexpectedException(e); }
181	>
182	>	await(pleaseInterrupt);
183	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
184		t.interrupt();
185	<	t.join();
185	>	awaitTermination(t);
186	>	assertEquals(0, q.remainingCapacity());
187		}
188
189		/**
190		* timed offer times out if elements not taken
191		*/
192	<	public void testFairTimedOffer() throws InterruptedException {
193	<	final SynchronousQueue q = new SynchronousQueue(true);
194	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
192	>	public void testTimedOffer() {
193	>	final boolean fair = randomBoolean();
194	>	final SynchronousQueue q = new SynchronousQueue(fair);
195	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
196	>	Thread t = newStartedThread(new CheckedRunnable() {
197		public void realRun() throws InterruptedException {
198	<	assertFalse(q.offer(new Object(), SHORT_DELAY_MS, MILLISECONDS));
289	<	q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS);
290	<	}});
198	>	long startTime = System.nanoTime();
199
200	<	t.start();
201	<	Thread.sleep(SMALL_DELAY_MS);
202	<	t.interrupt();
203	<	t.join();
204	<	}
200	>	assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS));
201	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
202	>
203	>	Thread.currentThread().interrupt();
204	>	try {
205	>	q.offer(new Object(), randomTimeout(), randomTimeUnit());
206	>	shouldThrow();
207	>	} catch (InterruptedException success) {}
208	>	assertFalse(Thread.interrupted());
209
210	+	pleaseInterrupt.countDown();
211	+	try {
212	+	q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS);
213	+	shouldThrow();
214	+	} catch (InterruptedException success) {}
215	+	assertFalse(Thread.interrupted());
216
217	<	/**
300	<	* take blocks interruptibly when empty
301	<	*/
302	<	public void testFairTakeFromEmpty() throws InterruptedException {
303	<	final SynchronousQueue q = new SynchronousQueue(true);
304	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
305	<	public void realRun() throws InterruptedException {
306	<	q.take();
217	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
218		}});
219
220	<	t.start();
221	<	Thread.sleep(SHORT_DELAY_MS);
220	>	await(pleaseInterrupt);
221	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
222		t.interrupt();
223	<	t.join();
223	>	awaitTermination(t);
224		}
225
226		/**
227	<	* poll fails unless active taker
227	>	* poll return null if no active putter
228		*/
229	<	public void testPoll() {
230	<	SynchronousQueue q = new SynchronousQueue();
229	>	public void testPoll()      { testPoll(false); }
230	>	public void testPoll_fair() { testPoll(true); }
231	>	public void testPoll(boolean fair) {
232	>	final SynchronousQueue q = new SynchronousQueue(fair);
233		assertNull(q.poll());
234		}
235
236		/**
237	<	* timed pool with zero timeout times out if no active taker
237	>	* timed poll with zero timeout times out if no active putter
238		*/
239	<	public void testTimedPoll0() throws InterruptedException {
240	<	SynchronousQueue q = new SynchronousQueue();
241	<	assertNull(q.poll(0, MILLISECONDS));
239	>	public void testTimedPoll0()      { testTimedPoll0(false); }
240	>	public void testTimedPoll0_fair() { testTimedPoll0(true); }
241	>	public void testTimedPoll0(boolean fair) {
242	>	final SynchronousQueue q = new SynchronousQueue(fair);
243	>	try { assertNull(q.poll(0, MILLISECONDS)); }
244	>	catch (InterruptedException e) { threadUnexpectedException(e); }
245		}
246
247		/**
248	<	* timed pool with nonzero timeout times out if no active taker
248	>	* timed poll with nonzero timeout times out if no active putter
249		*/
250	<	public void testTimedPoll() throws InterruptedException {
251	<	SynchronousQueue q = new SynchronousQueue();
252	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
250	>	public void testTimedPoll() {
251	>	final boolean fair = randomBoolean();
252	>	final SynchronousQueue q = new SynchronousQueue(fair);
253	>	final long startTime = System.nanoTime();
254	>	try { assertNull(q.poll(timeoutMillis(), MILLISECONDS)); }
255	>	catch (InterruptedException e) { threadUnexpectedException(e); }
256	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
257		}
258
259		/**
260	<	* Interrupted timed poll throws InterruptedException instead of
261	<	* returning timeout status
260	>	* timed poll before a delayed offer times out, returning null;
261	>	* after offer succeeds; on interruption throws
262		*/
263	<	public void testInterruptedTimedPoll() throws InterruptedException {
264	<	final SynchronousQueue q = new SynchronousQueue();
265	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
263	>	public void testTimedPollWithOffer() {
264	>	final boolean fair = randomBoolean();
265	>	final SynchronousQueue q = new SynchronousQueue(fair);
266	>	final CountDownLatch pleaseOffer = new CountDownLatch(1);
267	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
268	>	Thread t = newStartedThread(new CheckedRunnable() {
269		public void realRun() throws InterruptedException {
270	<	q.poll(SMALL_DELAY_MS, MILLISECONDS);
271	<	}});
270	>	long startTime = System.nanoTime();
271	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
272	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
273
274	<	t.start();
275	<	Thread.sleep(SHORT_DELAY_MS);
276	<	t.interrupt();
353	<	t.join();
354	<	}
274	>	pleaseOffer.countDown();
275	>	startTime = System.nanoTime();
276	>	assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS));
277
278	<	/**
279	<	* Interrupted timed poll throws InterruptedException instead of
280	<	* returning timeout status
281	<	*/
282	<	public void testFairInterruptedTimedPoll() throws InterruptedException {
283	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
362	<	public void realRun() throws InterruptedException {
363	<	SynchronousQueue q = new SynchronousQueue(true);
364	<	q.poll(SMALL_DELAY_MS, MILLISECONDS);
365	<	}});
366	<
367	<	t.start();
368	<	Thread.sleep(SHORT_DELAY_MS);
369	<	t.interrupt();
370	<	t.join();
371	<	}
278	>	Thread.currentThread().interrupt();
279	>	try {
280	>	q.poll(randomTimeout(), randomTimeUnit());
281	>	shouldThrow();
282	>	} catch (InterruptedException success) {}
283	>	assertFalse(Thread.interrupted());
284
285	<	/**
374	<	*  timed poll before a delayed offer fails; after offer succeeds;
375	<	*  on interruption throws
376	<	*/
377	<	public void testFairTimedPollWithOffer() throws InterruptedException {
378	<	final SynchronousQueue q = new SynchronousQueue(true);
379	<	Thread t = new Thread(new CheckedRunnable() {
380	<	public void realRun() throws InterruptedException {
285	>	pleaseInterrupt.countDown();
286		try {
382	–	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
383	–	assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS));
287		q.poll(LONG_DELAY_MS, MILLISECONDS);
288	<	threadShouldThrow();
288	>	shouldThrow();
289		} catch (InterruptedException success) {}
290	+	assertFalse(Thread.interrupted());
291	+
292	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
293		}});
294
295	<	t.start();
296	<	Thread.sleep(SMALL_DELAY_MS);
297	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
295	>	await(pleaseOffer);
296	>	long startTime = System.nanoTime();
297	>	try { assertTrue(q.offer(zero, LONG_DELAY_MS, MILLISECONDS)); }
298	>	catch (InterruptedException e) { threadUnexpectedException(e); }
299	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
300	>
301	>	await(pleaseInterrupt);
302	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
303		t.interrupt();
304	<	t.join();
304	>	awaitTermination(t);
305		}
306
396	–
307		/**
308	<	* peek returns null
308	>	* peek() returns null if no active putter
309		*/
310	<	public void testPeek() {
311	<	SynchronousQueue q = new SynchronousQueue();
310	>	public void testPeek()      { testPeek(false); }
311	>	public void testPeek_fair() { testPeek(true); }
312	>	public void testPeek(boolean fair) {
313	>	final SynchronousQueue q = new SynchronousQueue(fair);
314		assertNull(q.peek());
315		}
316
317		/**
318	<	* element throws NSEE
318	>	* element() throws NoSuchElementException if no active putter
319		*/
320	<	public void testElement() {
321	<	SynchronousQueue q = new SynchronousQueue();
320	>	public void testElement()      { testElement(false); }
321	>	public void testElement_fair() { testElement(true); }
322	>	public void testElement(boolean fair) {
323	>	final SynchronousQueue q = new SynchronousQueue(fair);
324		try {
325		q.element();
326		shouldThrow();
#	Line 414 | Line 328 | public class SynchronousQueueTest extend
328		}
329
330		/**
331	<	* remove throws NSEE if no active taker
331	>	* remove() throws NoSuchElementException if no active putter
332		*/
333	<	public void testRemove() {
334	<	SynchronousQueue q = new SynchronousQueue();
333	>	public void testRemove()      { testRemove(false); }
334	>	public void testRemove_fair() { testRemove(true); }
335	>	public void testRemove(boolean fair) {
336	>	final SynchronousQueue q = new SynchronousQueue(fair);
337		try {
338		q.remove();
339		shouldThrow();
#	Line 425 | Line 341 | public class SynchronousQueueTest extend
341		}
342
343		/**
428	–	* remove(x) returns false
429	–	*/
430	–	public void testRemoveElement() {
431	–	SynchronousQueue q = new SynchronousQueue();
432	–	assertFalse(q.remove(zero));
433	–	assertTrue(q.isEmpty());
434	–	}
435	–
436	–	/**
344		* contains returns false
345		*/
346	<	public void testContains() {
347	<	SynchronousQueue q = new SynchronousQueue();
346	>	public void testContains()      { testContains(false); }
347	>	public void testContains_fair() { testContains(true); }
348	>	public void testContains(boolean fair) {
349	>	final SynchronousQueue q = new SynchronousQueue(fair);
350		assertFalse(q.contains(zero));
351		}
352
353		/**
354		* clear ensures isEmpty
355		*/
356	<	public void testClear() {
357	<	SynchronousQueue q = new SynchronousQueue();
356	>	public void testClear()      { testClear(false); }
357	>	public void testClear_fair() { testClear(true); }
358	>	public void testClear(boolean fair) {
359	>	final SynchronousQueue q = new SynchronousQueue(fair);
360		q.clear();
361		assertTrue(q.isEmpty());
362		}
#	Line 453 | Line 364 | public class SynchronousQueueTest extend
364		/**
365		* containsAll returns false unless empty
366		*/
367	<	public void testContainsAll() {
368	<	SynchronousQueue q = new SynchronousQueue();
367	>	public void testContainsAll()      { testContainsAll(false); }
368	>	public void testContainsAll_fair() { testContainsAll(true); }
369	>	public void testContainsAll(boolean fair) {
370	>	final SynchronousQueue q = new SynchronousQueue(fair);
371		Integer[] empty = new Integer[0];
372		assertTrue(q.containsAll(Arrays.asList(empty)));
373		Integer[] ints = new Integer[1]; ints[0] = zero;
#	Line 464 | Line 377 | public class SynchronousQueueTest extend
377		/**
378		* retainAll returns false
379		*/
380	<	public void testRetainAll() {
381	<	SynchronousQueue q = new SynchronousQueue();
380	>	public void testRetainAll()      { testRetainAll(false); }
381	>	public void testRetainAll_fair() { testRetainAll(true); }
382	>	public void testRetainAll(boolean fair) {
383	>	final SynchronousQueue q = new SynchronousQueue(fair);
384		Integer[] empty = new Integer[0];
385		assertFalse(q.retainAll(Arrays.asList(empty)));
386		Integer[] ints = new Integer[1]; ints[0] = zero;
#	Line 475 | Line 390 | public class SynchronousQueueTest extend
390		/**
391		* removeAll returns false
392		*/
393	<	public void testRemoveAll() {
394	<	SynchronousQueue q = new SynchronousQueue();
393	>	public void testRemoveAll()      { testRemoveAll(false); }
394	>	public void testRemoveAll_fair() { testRemoveAll(true); }
395	>	public void testRemoveAll(boolean fair) {
396	>	final SynchronousQueue q = new SynchronousQueue(fair);
397		Integer[] empty = new Integer[0];
398		assertFalse(q.removeAll(Arrays.asList(empty)));
399		Integer[] ints = new Integer[1]; ints[0] = zero;
400		assertFalse(q.containsAll(Arrays.asList(ints)));
401		}
402
486	–
403		/**
404		* toArray is empty
405		*/
406	<	public void testToArray() {
407	<	SynchronousQueue q = new SynchronousQueue();
406	>	public void testToArray()      { testToArray(false); }
407	>	public void testToArray_fair() { testToArray(true); }
408	>	public void testToArray(boolean fair) {
409	>	final SynchronousQueue q = new SynchronousQueue(fair);
410		Object[] o = q.toArray();
411	<	assertEquals(o.length, 0);
411	>	assertEquals(0, o.length);
412		}
413
414		/**
415	<	* toArray(a) is nulled at position 0
415	>	* toArray(Integer array) returns its argument with the first
416	>	* element (if present) nulled out
417		*/
418	<	public void testToArray2() {
419	<	SynchronousQueue q = new SynchronousQueue();
420	<	Integer[] ints = new Integer[1];
421	<	assertNull(ints[0]);
418	>	public void testToArray2()      { testToArray2(false); }
419	>	public void testToArray2_fair() { testToArray2(true); }
420	>	public void testToArray2(boolean fair) {
421	>	final SynchronousQueue<Integer> q = new SynchronousQueue<>(fair);
422	>	Integer[] a;
423	>
424	>	a = new Integer[0];
425	>	assertSame(a, q.toArray(a));
426	>
427	>	a = new Integer[3];
428	>	Arrays.fill(a, 42);
429	>	assertSame(a, q.toArray(a));
430	>	assertNull(a[0]);
431	>	for (int i = 1; i < a.length; i++)
432	>	assertEquals(42, (int) a[i]);
433		}
434
435		/**
436		* toArray(null) throws NPE
437		*/
438	<	public void testToArray_BadArg() {
439	<	SynchronousQueue q = new SynchronousQueue();
438	>	public void testToArray_null()      { testToArray_null(false); }
439	>	public void testToArray_null_fair() { testToArray_null(true); }
440	>	public void testToArray_null(boolean fair) {
441	>	final SynchronousQueue q = new SynchronousQueue(fair);
442		try {
443	<	Object o[] = q.toArray(null);
443	>	Object[] o = q.toArray((Object[])null);
444		shouldThrow();
445		} catch (NullPointerException success) {}
446		}
447
516	–
448		/**
449		* iterator does not traverse any elements
450		*/
451	<	public void testIterator() {
452	<	SynchronousQueue q = new SynchronousQueue();
453	<	Iterator it = q.iterator();
454	<	assertFalse(it.hasNext());
524	<	try {
525	<	Object x = it.next();
526	<	shouldThrow();
527	<	} catch (NoSuchElementException success) {}
451	>	public void testIterator()      { testIterator(false); }
452	>	public void testIterator_fair() { testIterator(true); }
453	>	public void testIterator(boolean fair) {
454	>	assertIteratorExhausted(new SynchronousQueue(fair).iterator());
455		}
456
457		/**
458	<	* iterator remove throws ISE
458	>	* iterator remove throws IllegalStateException
459		*/
460	<	public void testIteratorRemove() {
461	<	SynchronousQueue q = new SynchronousQueue();
460	>	public void testIteratorRemove()      { testIteratorRemove(false); }
461	>	public void testIteratorRemove_fair() { testIteratorRemove(true); }
462	>	public void testIteratorRemove(boolean fair) {
463	>	final SynchronousQueue q = new SynchronousQueue(fair);
464		Iterator it = q.iterator();
465		try {
466		it.remove();
#	Line 542 | Line 471 | public class SynchronousQueueTest extend
471		/**
472		* toString returns a non-null string
473		*/
474	<	public void testToString() {
475	<	SynchronousQueue q = new SynchronousQueue();
474	>	public void testToString()      { testToString(false); }
475	>	public void testToString_fair() { testToString(true); }
476	>	public void testToString(boolean fair) {
477	>	final SynchronousQueue q = new SynchronousQueue(fair);
478		String s = q.toString();
479		assertNotNull(s);
480		}
481
551	–
482		/**
483		* offer transfers elements across Executor tasks
484		*/
485	<	public void testOfferInExecutor() {
486	<	final SynchronousQueue q = new SynchronousQueue();
487	<	ExecutorService executor = Executors.newFixedThreadPool(2);
488	<
489	<	executor.execute(new CheckedRunnable() {
490	<	public void realRun() throws InterruptedException {
491	<	assertFalse(q.offer(one));
492	<	assertTrue(q.offer(one, MEDIUM_DELAY_MS, MILLISECONDS));
493	<	assertEquals(0, q.remainingCapacity());
494	<	}});
495	<
496	<	executor.execute(new CheckedRunnable() {
497	<	public void realRun() throws InterruptedException {
498	<	Thread.sleep(SMALL_DELAY_MS);
499	<	assertSame(one, q.take());
500	<	}});
501	<
502	<	joinPool(executor);
503	<	}
504	<
505	<	/**
506	<	* poll retrieves elements across Executor threads
577	<	*/
578	<	public void testPollInExecutor() {
579	<	final SynchronousQueue q = new SynchronousQueue();
580	<	ExecutorService executor = Executors.newFixedThreadPool(2);
581	<	executor.execute(new CheckedRunnable() {
582	<	public void realRun() throws InterruptedException {
583	<	assertNull(q.poll());
584	<	assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
585	<	assertTrue(q.isEmpty());
586	<	}});
587	<
588	<	executor.execute(new CheckedRunnable() {
589	<	public void realRun() throws InterruptedException {
590	<	Thread.sleep(SHORT_DELAY_MS);
591	<	q.put(one);
592	<	}});
593	<
594	<	joinPool(executor);
595	<	}
596	<
597	<	/**
598	<	* a deserialized serialized queue is usable
599	<	*/
600	<	public void testSerialization() throws Exception {
601	<	SynchronousQueue q = new SynchronousQueue();
602	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
603	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
604	<	out.writeObject(q);
605	<	out.close();
606	<
607	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
608	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
609	<	SynchronousQueue r = (SynchronousQueue)in.readObject();
610	<	assertEquals(q.size(), r.size());
611	<	while (!q.isEmpty())
612	<	assertEquals(q.remove(), r.remove());
485	>	public void testOfferInExecutor()      { testOfferInExecutor(false); }
486	>	public void testOfferInExecutor_fair() { testOfferInExecutor(true); }
487	>	public void testOfferInExecutor(boolean fair) {
488	>	final SynchronousQueue q = new SynchronousQueue(fair);
489	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
490	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
491	>	try (PoolCleaner cleaner = cleaner(executor)) {
492	>
493	>	executor.execute(new CheckedRunnable() {
494	>	public void realRun() throws InterruptedException {
495	>	assertFalse(q.offer(one));
496	>	threadsStarted.await();
497	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
498	>	assertEquals(0, q.remainingCapacity());
499	>	}});
500	>
501	>	executor.execute(new CheckedRunnable() {
502	>	public void realRun() throws InterruptedException {
503	>	threadsStarted.await();
504	>	assertSame(one, q.take());
505	>	}});
506	>	}
507		}
508
509		/**
510	<	* drainTo(null) throws NPE
510	>	* timed poll retrieves elements across Executor threads
511		*/
512	<	public void testDrainToNull() {
513	<	SynchronousQueue q = new SynchronousQueue();
514	<	try {
515	<	q.drainTo(null);
516	<	shouldThrow();
517	<	} catch (NullPointerException success) {}
512	>	public void testPollInExecutor()      { testPollInExecutor(false); }
513	>	public void testPollInExecutor_fair() { testPollInExecutor(true); }
514	>	public void testPollInExecutor(boolean fair) {
515	>	final SynchronousQueue q = new SynchronousQueue(fair);
516	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
517	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
518	>	try (PoolCleaner cleaner = cleaner(executor)) {
519	>	executor.execute(new CheckedRunnable() {
520	>	public void realRun() throws InterruptedException {
521	>	assertNull(q.poll());
522	>	threadsStarted.await();
523	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
524	>	assertTrue(q.isEmpty());
525	>	}});
526	>
527	>	executor.execute(new CheckedRunnable() {
528	>	public void realRun() throws InterruptedException {
529	>	threadsStarted.await();
530	>	q.put(one);
531	>	}});
532	>	}
533		}
534
535		/**
536	<	* drainTo(this) throws IAE
536	>	* a deserialized/reserialized queue is usable
537		*/
538	<	public void testDrainToSelf() {
539	<	SynchronousQueue q = new SynchronousQueue();
540	<	try {
541	<	q.drainTo(q);
542	<	shouldThrow();
543	<	} catch (IllegalArgumentException success) {}
538	>	public void testSerialization() {
539	>	final SynchronousQueue x = new SynchronousQueue();
540	>	final SynchronousQueue y = new SynchronousQueue(false);
541	>	final SynchronousQueue z = new SynchronousQueue(true);
542	>	assertSerialEquals(x, y);
543	>	assertNotSerialEquals(x, z);
544	>	SynchronousQueue[] qs = { x, y, z };
545	>	for (SynchronousQueue q : qs) {
546	>	SynchronousQueue clone = serialClone(q);
547	>	assertNotSame(q, clone);
548	>	assertSerialEquals(q, clone);
549	>	assertTrue(clone.isEmpty());
550	>	assertEquals(0, clone.size());
551	>	assertEquals(0, clone.remainingCapacity());
552	>	assertFalse(clone.offer(zero));
553	>	}
554		}
555
556		/**
557		* drainTo(c) of empty queue doesn't transfer elements
558		*/
559	<	public void testDrainTo() {
560	<	SynchronousQueue q = new SynchronousQueue();
559	>	public void testDrainTo()      { testDrainTo(false); }
560	>	public void testDrainTo_fair() { testDrainTo(true); }
561	>	public void testDrainTo(boolean fair) {
562	>	final SynchronousQueue q = new SynchronousQueue(fair);
563		ArrayList l = new ArrayList();
564		q.drainTo(l);
565	<	assertEquals(q.size(), 0);
566	<	assertEquals(l.size(), 0);
565	>	assertEquals(0, q.size());
566	>	assertEquals(0, l.size());
567		}
568
569		/**
570		* drainTo empties queue, unblocking a waiting put.
571		*/
572	<	public void testDrainToWithActivePut() throws InterruptedException {
573	<	final SynchronousQueue q = new SynchronousQueue();
574	<	Thread t = new Thread(new CheckedRunnable() {
572	>	public void testDrainToWithActivePut()      { testDrainToWithActivePut(false); }
573	>	public void testDrainToWithActivePut_fair() { testDrainToWithActivePut(true); }
574	>	public void testDrainToWithActivePut(boolean fair) {
575	>	final SynchronousQueue q = new SynchronousQueue(fair);
576	>	Thread t = newStartedThread(new CheckedRunnable() {
577		public void realRun() throws InterruptedException {
578	<	q.put(new Integer(1));
578	>	q.put(one);
579		}});
580
658	–	t.start();
581		ArrayList l = new ArrayList();
582	<	Thread.sleep(SHORT_DELAY_MS);
583	<	q.drainTo(l);
584	<	assertTrue(l.size() <= 1);
585	<	if (l.size() > 0)
586	<	assertEquals(l.get(0), new Integer(1));
587	<	t.join();
588	<	assertTrue(l.size() <= 1);
589	<	}
590	<
591	<	/**
670	<	* drainTo(null, n) throws NPE
671	<	*/
672	<	public void testDrainToNullN() {
673	<	SynchronousQueue q = new SynchronousQueue();
674	<	try {
675	<	q.drainTo(null, 0);
676	<	shouldThrow();
677	<	} catch (NullPointerException success) {}
678	<	}
679	<
680	<	/**
681	<	* drainTo(this, n) throws IAE
682	<	*/
683	<	public void testDrainToSelfN() {
684	<	SynchronousQueue q = new SynchronousQueue();
685	<	try {
686	<	q.drainTo(q, 0);
687	<	shouldThrow();
688	<	} catch (IllegalArgumentException success) {}
582	>	long startTime = System.nanoTime();
583	>	while (l.isEmpty()) {
584	>	q.drainTo(l);
585	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
586	>	fail("timed out");
587	>	Thread.yield();
588	>	}
589	>	assertEquals(1, l.size());
590	>	assertSame(one, l.get(0));
591	>	awaitTermination(t);
592		}
593
594		/**
#	Line 693 | Line 596 | public class SynchronousQueueTest extend
596		*/
597		public void testDrainToN() throws InterruptedException {
598		final SynchronousQueue q = new SynchronousQueue();
599	<	Thread t1 = new Thread(new CheckedRunnable() {
599	>	Thread t1 = newStartedThread(new CheckedRunnable() {
600		public void realRun() throws InterruptedException {
601		q.put(one);
602		}});
603
604	<	Thread t2 = new Thread(new CheckedRunnable() {
604	>	Thread t2 = newStartedThread(new CheckedRunnable() {
605		public void realRun() throws InterruptedException {
606		q.put(two);
607		}});
608
706	–	t1.start();
707	–	t2.start();
609		ArrayList l = new ArrayList();
610	<	Thread.sleep(SHORT_DELAY_MS);
611	<	q.drainTo(l, 1);
610	>	int drained;
611	>	while ((drained = q.drainTo(l, 1)) == 0) Thread.yield();
612	>	assertEquals(1, drained);
613		assertEquals(1, l.size());
614	<	q.drainTo(l, 1);
614	>	while ((drained = q.drainTo(l, 1)) == 0) Thread.yield();
615	>	assertEquals(1, drained);
616		assertEquals(2, l.size());
617		assertTrue(l.contains(one));
618		assertTrue(l.contains(two));
619	<	t1.join();
620	<	t2.join();
619	>	awaitTermination(t1);
620	>	awaitTermination(t2);
621	>	}
622	>
623	>	/**
624	>	* remove(null), contains(null) always return false
625	>	*/
626	>	public void testNeverContainsNull() {
627	>	Collection<?> q = new SynchronousQueue();
628	>	assertFalse(q.contains(null));
629	>	assertFalse(q.remove(null));
630		}
631
632		}

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