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Comparing jsr166/src/test/tck/SynchronousQueueTest.java (file contents):
Revision 1.36 by jsr166, Sat May 28 13:40:20 2011 UTC vs.
Revision 1.58 by jsr166, Sun May 14 04:02:06 2017 UTC

#	Line 6 | Line 6
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 50 | Line 60 | public class SynchronousQueueTest extend
60		}
61
62		/**
53	–	* offer(null) throws NullPointerException
54	–	*/
55	–	public void testOfferNull()      { testOfferNull(false); }
56	–	public void testOfferNull_fair() { testOfferNull(true); }
57	–	public void testOfferNull(boolean fair) {
58	–	SynchronousQueue q = new SynchronousQueue(fair);
59	–	try {
60	–	q.offer(null);
61	–	shouldThrow();
62	–	} catch (NullPointerException success) {}
63	–	}
64	–
65	–	/**
66	–	* add(null) throws NullPointerException
67	–	*/
68	–	public void testAddNull()      { testAddNull(false); }
69	–	public void testAddNull_fair() { testAddNull(true); }
70	–	public void testAddNull(boolean fair) {
71	–	SynchronousQueue q = new SynchronousQueue(fair);
72	–	try {
73	–	q.add(null);
74	–	shouldThrow();
75	–	} catch (NullPointerException success) {}
76	–	}
77	–
78	–	/**
63		* offer fails if no active taker
64		*/
65		public void testOffer()      { testOffer(false); }
#	Line 100 | Line 84 | public class SynchronousQueueTest extend
84		}
85
86		/**
103	–	* addAll(null) throws NullPointerException
104	–	*/
105	–	public void testAddAll_null()      { testAddAll_null(false); }
106	–	public void testAddAll_null_fair() { testAddAll_null(true); }
107	–	public void testAddAll_null(boolean fair) {
108	–	SynchronousQueue q = new SynchronousQueue(fair);
109	–	try {
110	–	q.addAll(null);
111	–	shouldThrow();
112	–	} catch (NullPointerException success) {}
113	–	}
114	–
115	–	/**
87		* addAll(this) throws IllegalArgumentException
88		*/
89		public void testAddAll_self()      { testAddAll_self(false); }
#	Line 126 | Line 97 | public class SynchronousQueueTest extend
97		}
98
99		/**
129	–	* addAll of a collection with null elements throws NullPointerException
130	–	*/
131	–	public void testAddAll_null2()      { testAddAll_null2(false); }
132	–	public void testAddAll_null2_fair() { testAddAll_null2(true); }
133	–	public void testAddAll_null2(boolean fair) {
134	–	SynchronousQueue q = new SynchronousQueue(fair);
135	–	Collection<Integer> ints = Arrays.asList(new Integer[1]);
136	–	try {
137	–	q.addAll(ints);
138	–	shouldThrow();
139	–	} catch (NullPointerException success) {}
140	–	}
141	–
142	–	/**
100		* addAll throws ISE if no active taker
101		*/
102		public void testAddAll_ISE()      { testAddAll_ISE(false); }
#	Line 157 | Line 114 | public class SynchronousQueueTest extend
114		}
115
116		/**
160	–	* put(null) throws NPE
161	–	*/
162	–	public void testPutNull() throws InterruptedException {
163	–	try {
164	–	SynchronousQueue q = new SynchronousQueue();
165	–	q.put(null);
166	–	shouldThrow();
167	–	} catch (NullPointerException success) {}
168	–	}
169	–
170	–	/**
117		* put blocks interruptibly if no active taker
118		*/
119		public void testBlockingPut()      { testBlockingPut(false); }
#	Line 193 | Line 139 | public class SynchronousQueueTest extend
139		}});
140
141		await(pleaseInterrupt);
142	<	assertThreadStaysAlive(t);
142	>	assertThreadBlocks(t, Thread.State.WAITING);
143		t.interrupt();
144		awaitTermination(t);
145		assertEquals(0, q.remainingCapacity());
#	Line 213 | Line 159 | public class SynchronousQueueTest extend
159		pleaseTake.countDown();
160		q.put(one);
161
162	+	Thread.currentThread().interrupt();
163	+	try {
164	+	q.put(99);
165	+	shouldThrow();
166	+	} catch (InterruptedException success) {}
167	+	assertFalse(Thread.interrupted());
168	+
169		pleaseInterrupt.countDown();
170		try {
171		q.put(99);
#	Line 222 | Line 175 | public class SynchronousQueueTest extend
175		}});
176
177		await(pleaseTake);
178	<	assertEquals(q.remainingCapacity(), 0);
178	>	assertEquals(0, q.remainingCapacity());
179		try { assertSame(one, q.take()); }
180		catch (InterruptedException e) { threadUnexpectedException(e); }
181
182		await(pleaseInterrupt);
183	<	assertThreadStaysAlive(t);
183	>	assertThreadBlocks(t, Thread.State.WAITING);
184		t.interrupt();
185		awaitTermination(t);
186	<	assertEquals(q.remainingCapacity(), 0);
186	>	assertEquals(0, q.remainingCapacity());
187		}
188
189		/**
190		* timed offer times out if elements not taken
191		*/
192	<	public void testTimedOffer()      { testTimedOffer(false); }
193	<	public void testTimedOffer_fair() { testTimedOffer(true); }
241	<	public void testTimedOffer(boolean fair) {
192	>	public void testTimedOffer() {
193	>	final boolean fair = ThreadLocalRandom.current().nextBoolean();
194		final SynchronousQueue q = new SynchronousQueue(fair);
195		final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
196		Thread t = newStartedThread(new CheckedRunnable() {
#	Line 251 | Line 203 | public class SynchronousQueueTest extend
203		q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS);
204		shouldThrow();
205		} catch (InterruptedException success) {}
206	+	assertFalse(Thread.interrupted());
207		}});
208
209		await(pleaseInterrupt);
210	<	assertThreadStaysAlive(t);
210	>	assertThreadBlocks(t, Thread.State.TIMED_WAITING);
211		t.interrupt();
212		awaitTermination(t);
213		}
#	Line 283 | Line 236 | public class SynchronousQueueTest extend
236		/**
237		* timed poll with nonzero timeout times out if no active putter
238		*/
239	<	public void testTimedPoll()      { testTimedPoll(false); }
240	<	public void testTimedPoll_fair() { testTimedPoll(true); }
288	<	public void testTimedPoll(boolean fair) {
239	>	public void testTimedPoll() {
240	>	final boolean fair = ThreadLocalRandom.current().nextBoolean();
241		final SynchronousQueue q = new SynchronousQueue(fair);
242	<	long startTime = System.nanoTime();
242	>	final long startTime = System.nanoTime();
243		try { assertNull(q.poll(timeoutMillis(), MILLISECONDS)); }
244		catch (InterruptedException e) { threadUnexpectedException(e); }
245		assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
#	Line 297 | Line 249 | public class SynchronousQueueTest extend
249		* timed poll before a delayed offer times out, returning null;
250		* after offer succeeds; on interruption throws
251		*/
252	<	public void testTimedPollWithOffer()      { testTimedPollWithOffer(false); }
253	<	public void testTimedPollWithOffer_fair() { testTimedPollWithOffer(true); }
302	<	public void testTimedPollWithOffer(boolean fair) {
252	>	public void testTimedPollWithOffer() {
253	>	final boolean fair = ThreadLocalRandom.current().nextBoolean();
254		final SynchronousQueue q = new SynchronousQueue(fair);
255		final CountDownLatch pleaseOffer = new CountDownLatch(1);
256		final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
#	Line 312 | Line 263 | public class SynchronousQueueTest extend
263		pleaseOffer.countDown();
264		startTime = System.nanoTime();
265		assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS));
315	–	assertTrue(millisElapsedSince(startTime) < MEDIUM_DELAY_MS);
266
267		Thread.currentThread().interrupt();
268		try {
#	Line 327 | Line 277 | public class SynchronousQueueTest extend
277		shouldThrow();
278		} catch (InterruptedException success) {}
279		assertFalse(Thread.interrupted());
280	+
281	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
282		}});
283
284		await(pleaseOffer);
285		long startTime = System.nanoTime();
286		try { assertTrue(q.offer(zero, LONG_DELAY_MS, MILLISECONDS)); }
287		catch (InterruptedException e) { threadUnexpectedException(e); }
288	<	assertTrue(millisElapsedSince(startTime) < MEDIUM_DELAY_MS);
288	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
289
290		await(pleaseInterrupt);
291	<	assertThreadStaysAlive(t);
291	>	assertThreadBlocks(t, Thread.State.TIMED_WAITING);
292		t.interrupt();
293		awaitTermination(t);
294		}
#	Line 378 | Line 330 | public class SynchronousQueueTest extend
330		}
331
332		/**
381	–	* remove(x) returns false
382	–	*/
383	–	public void testRemoveElement()      { testRemoveElement(false); }
384	–	public void testRemoveElement_fair() { testRemoveElement(true); }
385	–	public void testRemoveElement(boolean fair) {
386	–	final SynchronousQueue q = new SynchronousQueue(fair);
387	–	assertFalse(q.remove(zero));
388	–	assertTrue(q.isEmpty());
389	–	}
390	–
391	–	/**
333		* contains returns false
334		*/
335		public void testContains()      { testContains(false); }
#	Line 456 | Line 397 | public class SynchronousQueueTest extend
397		public void testToArray(boolean fair) {
398		final SynchronousQueue q = new SynchronousQueue(fair);
399		Object[] o = q.toArray();
400	<	assertEquals(o.length, 0);
400	>	assertEquals(0, o.length);
401		}
402
403		/**
404	<	* toArray(a) is nulled at position 0
404	>	* toArray(Integer array) returns its argument with the first
405	>	* element (if present) nulled out
406		*/
407		public void testToArray2()      { testToArray2(false); }
408		public void testToArray2_fair() { testToArray2(true); }
409		public void testToArray2(boolean fair) {
410	<	final SynchronousQueue q = new SynchronousQueue(fair);
411	<	Integer[] ints = new Integer[1];
412	<	assertNull(ints[0]);
410	>	final SynchronousQueue<Integer> q = new SynchronousQueue<>(fair);
411	>	Integer[] a;
412	>
413	>	a = new Integer[0];
414	>	assertSame(a, q.toArray(a));
415	>
416	>	a = new Integer[3];
417	>	Arrays.fill(a, 42);
418	>	assertSame(a, q.toArray(a));
419	>	assertNull(a[0]);
420	>	for (int i = 1; i < a.length; i++)
421	>	assertEquals(42, (int) a[i]);
422		}
423
424		/**
#	Line 478 | Line 429 | public class SynchronousQueueTest extend
429		public void testToArray_null(boolean fair) {
430		final SynchronousQueue q = new SynchronousQueue(fair);
431		try {
432	<	Object o[] = q.toArray(null);
432	>	Object[] o = q.toArray(null);
433		shouldThrow();
434		} catch (NullPointerException success) {}
435		}
#	Line 489 | Line 440 | public class SynchronousQueueTest extend
440		public void testIterator()      { testIterator(false); }
441		public void testIterator_fair() { testIterator(true); }
442		public void testIterator(boolean fair) {
443	<	final SynchronousQueue q = new SynchronousQueue(fair);
493	<	Iterator it = q.iterator();
494	<	assertFalse(it.hasNext());
495	<	try {
496	<	Object x = it.next();
497	<	shouldThrow();
498	<	} catch (NoSuchElementException success) {}
443	>	assertIteratorExhausted(new SynchronousQueue(fair).iterator());
444		}
445
446		/**
#	Line 530 | Line 475 | public class SynchronousQueueTest extend
475		public void testOfferInExecutor_fair() { testOfferInExecutor(true); }
476		public void testOfferInExecutor(boolean fair) {
477		final SynchronousQueue q = new SynchronousQueue(fair);
533	–	ExecutorService executor = Executors.newFixedThreadPool(2);
478		final CheckedBarrier threadsStarted = new CheckedBarrier(2);
479	+	final ExecutorService executor = Executors.newFixedThreadPool(2);
480	+	try (PoolCleaner cleaner = cleaner(executor)) {
481
482	<	executor.execute(new CheckedRunnable() {
483	<	public void realRun() throws InterruptedException {
484	<	assertFalse(q.offer(one));
485	<	threadsStarted.await();
486	<	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
487	<	assertEquals(0, q.remainingCapacity());
488	<	}});
489	<
490	<	executor.execute(new CheckedRunnable() {
491	<	public void realRun() throws InterruptedException {
492	<	threadsStarted.await();
493	<	assertSame(one, q.take());
494	<	}});
495	<
550	<	joinPool(executor);
482	>	executor.execute(new CheckedRunnable() {
483	>	public void realRun() throws InterruptedException {
484	>	assertFalse(q.offer(one));
485	>	threadsStarted.await();
486	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
487	>	assertEquals(0, q.remainingCapacity());
488	>	}});
489	>
490	>	executor.execute(new CheckedRunnable() {
491	>	public void realRun() throws InterruptedException {
492	>	threadsStarted.await();
493	>	assertSame(one, q.take());
494	>	}});
495	>	}
496		}
497
498		/**
#	Line 558 | Line 503 | public class SynchronousQueueTest extend
503		public void testPollInExecutor(boolean fair) {
504		final SynchronousQueue q = new SynchronousQueue(fair);
505		final CheckedBarrier threadsStarted = new CheckedBarrier(2);
506	<	ExecutorService executor = Executors.newFixedThreadPool(2);
507	<	executor.execute(new CheckedRunnable() {
508	<	public void realRun() throws InterruptedException {
509	<	assertNull(q.poll());
510	<	threadsStarted.await();
511	<	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
512	<	assertTrue(q.isEmpty());
513	<	}});
514	<
515	<	executor.execute(new CheckedRunnable() {
516	<	public void realRun() throws InterruptedException {
517	<	threadsStarted.await();
518	<	q.put(one);
519	<	}});
520	<
521	<	joinPool(executor);
506	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
507	>	try (PoolCleaner cleaner = cleaner(executor)) {
508	>	executor.execute(new CheckedRunnable() {
509	>	public void realRun() throws InterruptedException {
510	>	assertNull(q.poll());
511	>	threadsStarted.await();
512	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
513	>	assertTrue(q.isEmpty());
514	>	}});
515	>
516	>	executor.execute(new CheckedRunnable() {
517	>	public void realRun() throws InterruptedException {
518	>	threadsStarted.await();
519	>	q.put(one);
520	>	}});
521	>	}
522		}
523
524		/**
525		* a deserialized serialized queue is usable
526		*/
527	<	public void testSerialization()      { testSerialization(false); }
528	<	public void testSerialization_fair() { testSerialization(true); }
529	<	public void testSerialization(boolean fair) {
530	<	final SynchronousQueue q = new SynchronousQueue(fair);
531	<	final SynchronousQueue r = serialClone(q);
532	<	assertTrue(q != r);
533	<	assertEquals(q.size(), r.size());
534	<	while (!q.isEmpty())
535	<	assertEquals(q.remove(), r.remove());
536	<	}
537	<
538	<	/**
539	<	* drainTo(null) throws NPE
540	<	*/
541	<	public void testDrainToNull()      { testDrainToNull(false); }
542	<	public void testDrainToNull_fair() { testDrainToNull(true); }
598	<	public void testDrainToNull(boolean fair) {
599	<	final SynchronousQueue q = new SynchronousQueue(fair);
600	<	try {
601	<	q.drainTo(null);
602	<	shouldThrow();
603	<	} catch (NullPointerException success) {}
604	<	}
605	<
606	<	/**
607	<	* drainTo(this) throws IAE
608	<	*/
609	<	public void testDrainToSelf()      { testDrainToSelf(false); }
610	<	public void testDrainToSelf_fair() { testDrainToSelf(true); }
611	<	public void testDrainToSelf(boolean fair) {
612	<	final SynchronousQueue q = new SynchronousQueue(fair);
613	<	try {
614	<	q.drainTo(q);
615	<	shouldThrow();
616	<	} catch (IllegalArgumentException success) {}
527	>	public void testSerialization() {
528	>	final SynchronousQueue x = new SynchronousQueue();
529	>	final SynchronousQueue y = new SynchronousQueue(false);
530	>	final SynchronousQueue z = new SynchronousQueue(true);
531	>	assertSerialEquals(x, y);
532	>	assertNotSerialEquals(x, z);
533	>	SynchronousQueue[] qs = { x, y, z };
534	>	for (SynchronousQueue q : qs) {
535	>	SynchronousQueue clone = serialClone(q);
536	>	assertNotSame(q, clone);
537	>	assertSerialEquals(q, clone);
538	>	assertTrue(clone.isEmpty());
539	>	assertEquals(0, clone.size());
540	>	assertEquals(0, clone.remainingCapacity());
541	>	assertFalse(clone.offer(zero));
542	>	}
543		}
544
545		/**
#	Line 625 | Line 551 | public class SynchronousQueueTest extend
551		final SynchronousQueue q = new SynchronousQueue(fair);
552		ArrayList l = new ArrayList();
553		q.drainTo(l);
554	<	assertEquals(q.size(), 0);
555	<	assertEquals(l.size(), 0);
554	>	assertEquals(0, q.size());
555	>	assertEquals(0, l.size());
556		}
557
558		/**
#	Line 649 | Line 575 | public class SynchronousQueueTest extend
575		fail("timed out");
576		Thread.yield();
577		}
578	<	assertTrue(l.size() == 1);
578	>	assertEquals(1, l.size());
579		assertSame(one, l.get(0));
580		awaitTermination(t);
581		}
582
583		/**
658	–	* drainTo(null, n) throws NullPointerException
659	–	*/
660	–	public void testDrainToNullN()      { testDrainToNullN(false); }
661	–	public void testDrainToNullN_fair() { testDrainToNullN(true); }
662	–	public void testDrainToNullN(boolean fair) {
663	–	final SynchronousQueue q = new SynchronousQueue(fair);
664	–	try {
665	–	q.drainTo(null, 0);
666	–	shouldThrow();
667	–	} catch (NullPointerException success) {}
668	–	}
669	–
670	–	/**
671	–	* drainTo(this, n) throws IllegalArgumentException
672	–	*/
673	–	public void testDrainToSelfN()      { testDrainToSelfN(false); }
674	–	public void testDrainToSelfN_fair() { testDrainToSelfN(true); }
675	–	public void testDrainToSelfN(boolean fair) {
676	–	final SynchronousQueue q = new SynchronousQueue(fair);
677	–	try {
678	–	q.drainTo(q, 0);
679	–	shouldThrow();
680	–	} catch (IllegalArgumentException success) {}
681	–	}
682	–
683	–	/**
584		* drainTo(c, n) empties up to n elements of queue into c
585		*/
586		public void testDrainToN() throws InterruptedException {
#	Line 696 | Line 596 | public class SynchronousQueueTest extend
596		}});
597
598		ArrayList l = new ArrayList();
599	<	delay(SHORT_DELAY_MS);
600	<	q.drainTo(l, 1);
599	>	int drained;
600	>	while ((drained = q.drainTo(l, 1)) == 0) Thread.yield();
601	>	assertEquals(1, drained);
602		assertEquals(1, l.size());
603	<	q.drainTo(l, 1);
603	>	while ((drained = q.drainTo(l, 1)) == 0) Thread.yield();
604	>	assertEquals(1, drained);
605		assertEquals(2, l.size());
606		assertTrue(l.contains(one));
607		assertTrue(l.contains(two));
#	Line 707 | Line 609 | public class SynchronousQueueTest extend
609		awaitTermination(t2);
610		}
611
612	+	/**
613	+	* remove(null), contains(null) always return false
614	+	*/
615	+	public void testNeverContainsNull() {
616	+	Collection<?> q = new SynchronousQueue();
617	+	assertFalse(q.contains(null));
618	+	assertFalse(q.remove(null));
619	+	}
620	+
621		}

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