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Comparing jsr166/src/test/tck/ArrayBlockingQueueTest.java (file contents):
Revision 1.29 by jsr166, Wed Aug 25 00:07:02 2010 UTC vs.
Revision 1.73 by jsr166, Mon Oct 17 01:52:04 2016 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	–
10	–	import junit.framework.*;
11	–	import java.util.*;
12	–	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.Queue;
17	>	import java.util.concurrent.ArrayBlockingQueue;
18	>	import java.util.concurrent.BlockingQueue;
19	>	import java.util.concurrent.CountDownLatch;
20	>	import java.util.concurrent.Executors;
21	>	import java.util.concurrent.ExecutorService;
22	>
23	>	import junit.framework.Test;
24
25		public class ArrayBlockingQueueTest extends JSR166TestCase {
26	+
27	+	public static class Fair extends BlockingQueueTest {
28	+	protected BlockingQueue emptyCollection() {
29	+	return new ArrayBlockingQueue(SIZE, true);
30	+	}
31	+	}
32	+
33	+	public static class NonFair extends BlockingQueueTest {
34	+	protected BlockingQueue emptyCollection() {
35	+	return new ArrayBlockingQueue(SIZE, false);
36	+	}
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() {
44	<	return new TestSuite(ArrayBlockingQueueTest.class);
44	>	class Implementation implements CollectionImplementation {
45	>	public Class<?> klazz() { return ArrayBlockingQueue.class; }
46	>	public Collection emptyCollection() { return new ArrayBlockingQueue(SIZE, false); }
47	>	public Object makeElement(int i) { return i; }
48	>	public boolean isConcurrent() { return true; }
49	>	public boolean permitsNulls() { return false; }
50	>	}
51	>	return newTestSuite(ArrayBlockingQueueTest.class,
52	>	new Fair().testSuite(),
53	>	new NonFair().testSuite(),
54	>	CollectionTest.testSuite(new Implementation()));
55		}
56
57		/**
58	<	* Create a queue of given size containing consecutive
59	<	* Integers 0 ... n.
58	>	* Returns a new queue of given size containing consecutive
59	>	* Integers 0 ... n - 1.
60		*/
61	<	private ArrayBlockingQueue populatedQueue(int n) {
62	<	ArrayBlockingQueue q = new ArrayBlockingQueue(n);
61	>	private ArrayBlockingQueue<Integer> populatedQueue(int n) {
62	>	ArrayBlockingQueue<Integer> q = new ArrayBlockingQueue<Integer>(n);
63		assertTrue(q.isEmpty());
64		for (int i = 0; i < n; i++)
65		assertTrue(q.offer(new Integer(i)));
66		assertFalse(q.isEmpty());
67		assertEquals(0, q.remainingCapacity());
68		assertEquals(n, q.size());
69	+	assertEquals((Integer) 0, q.peek());
70		return q;
71		}
72
#	Line 48 | Line 82 | public class ArrayBlockingQueueTest exte
82		*/
83		public void testConstructor2() {
84		try {
85	<	ArrayBlockingQueue q = new ArrayBlockingQueue(0);
85	>	new ArrayBlockingQueue(0);
86		shouldThrow();
87		} catch (IllegalArgumentException success) {}
88		}
#	Line 58 | Line 92 | public class ArrayBlockingQueueTest exte
92		*/
93		public void testConstructor3() {
94		try {
95	<	ArrayBlockingQueue q = new ArrayBlockingQueue(1, true, null);
95	>	new ArrayBlockingQueue(1, true, null);
96		shouldThrow();
97		} catch (NullPointerException success) {}
98		}
#	Line 67 | Line 101 | public class ArrayBlockingQueueTest exte
101		* Initializing from Collection of null elements throws NPE
102		*/
103		public void testConstructor4() {
104	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
105		try {
106	<	Integer[] ints = new Integer[SIZE];
72	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, false, Arrays.asList(ints));
106	>	new ArrayBlockingQueue(SIZE, false, elements);
107		shouldThrow();
108		} catch (NullPointerException success) {}
109		}
#	Line 78 | Line 112 | public class ArrayBlockingQueueTest exte
112		* Initializing from Collection with some null elements throws NPE
113		*/
114		public void testConstructor5() {
115	+	Integer[] ints = new Integer[SIZE];
116	+	for (int i = 0; i < SIZE - 1; ++i)
117	+	ints[i] = i;
118	+	Collection<Integer> elements = Arrays.asList(ints);
119		try {
120	<	Integer[] ints = new Integer[SIZE];
83	<	for (int i = 0; i < SIZE-1; ++i)
84	<	ints[i] = new Integer(i);
85	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, false, Arrays.asList(ints));
120	>	new ArrayBlockingQueue(SIZE, false, elements);
121		shouldThrow();
122		} catch (NullPointerException success) {}
123		}
#	Line 91 | Line 126 | public class ArrayBlockingQueueTest exte
126		* Initializing from too large collection throws IAE
127		*/
128		public void testConstructor6() {
129	+	Integer[] ints = new Integer[SIZE];
130	+	for (int i = 0; i < SIZE; ++i)
131	+	ints[i] = i;
132	+	Collection<Integer> elements = Arrays.asList(ints);
133		try {
134	<	Integer[] ints = new Integer[SIZE];
96	<	for (int i = 0; i < SIZE; ++i)
97	<	ints[i] = new Integer(i);
98	<	ArrayBlockingQueue q = new ArrayBlockingQueue(1, false, Arrays.asList(ints));
134	>	new ArrayBlockingQueue(SIZE - 1, false, elements);
135		shouldThrow();
136		} catch (IllegalArgumentException success) {}
137		}
#	Line 106 | Line 142 | public class ArrayBlockingQueueTest exte
142		public void testConstructor7() {
143		Integer[] ints = new Integer[SIZE];
144		for (int i = 0; i < SIZE; ++i)
145	<	ints[i] = new Integer(i);
146	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, true, Arrays.asList(ints));
145	>	ints[i] = i;
146	>	Collection<Integer> elements = Arrays.asList(ints);
147	>	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, true, elements);
148		for (int i = 0; i < SIZE; ++i)
149		assertEquals(ints[i], q.poll());
150		}
#	Line 131 | Line 168 | public class ArrayBlockingQueueTest exte
168		* remainingCapacity decreases on add, increases on remove
169		*/
170		public void testRemainingCapacity() {
171	<	ArrayBlockingQueue q = populatedQueue(SIZE);
171	>	BlockingQueue q = populatedQueue(SIZE);
172		for (int i = 0; i < SIZE; ++i) {
173		assertEquals(i, q.remainingCapacity());
174	<	assertEquals(SIZE-i, q.size());
175	<	q.remove();
174	>	assertEquals(SIZE, q.size() + q.remainingCapacity());
175	>	assertEquals(i, q.remove());
176		}
177		for (int i = 0; i < SIZE; ++i) {
178	<	assertEquals(SIZE-i, q.remainingCapacity());
179	<	assertEquals(i, q.size());
180	<	q.add(new Integer(i));
178	>	assertEquals(SIZE - i, q.remainingCapacity());
179	>	assertEquals(SIZE, q.size() + q.remainingCapacity());
180	>	assertTrue(q.add(i));
181		}
182		}
183
184		/**
148	–	*  offer(null) throws NPE
149	–	*/
150	–	public void testOfferNull() {
151	–	try {
152	–	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
153	–	q.offer(null);
154	–	shouldThrow();
155	–	} catch (NullPointerException success) {}
156	–	}
157	–
158	–	/**
159	–	*  add(null) throws NPE
160	–	*/
161	–	public void testAddNull() {
162	–	try {
163	–	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
164	–	q.add(null);
165	–	shouldThrow();
166	–	} catch (NullPointerException success) {}
167	–	}
168	–
169	–	/**
185		* Offer succeeds if not full; fails if full
186		*/
187		public void testOffer() {
#	Line 179 | Line 194 | public class ArrayBlockingQueueTest exte
194		* add succeeds if not full; throws ISE if full
195		*/
196		public void testAdd() {
197	+	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
198	+	for (int i = 0; i < SIZE; ++i) {
199	+	assertTrue(q.add(new Integer(i)));
200	+	}
201	+	assertEquals(0, q.remainingCapacity());
202		try {
183	–	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
184	–	for (int i = 0; i < SIZE; ++i) {
185	–	assertTrue(q.add(new Integer(i)));
186	–	}
187	–	assertEquals(0, q.remainingCapacity());
203		q.add(new Integer(SIZE));
204		shouldThrow();
205		} catch (IllegalStateException success) {}
206		}
207
208		/**
194	–	*  addAll(null) throws NPE
195	–	*/
196	–	public void testAddAll1() {
197	–	try {
198	–	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
199	–	q.addAll(null);
200	–	shouldThrow();
201	–	} catch (NullPointerException success) {}
202	–	}
203	–
204	–	/**
209		* addAll(this) throws IAE
210		*/
211		public void testAddAllSelf() {
212	+	ArrayBlockingQueue q = populatedQueue(SIZE);
213		try {
209	–	ArrayBlockingQueue q = populatedQueue(SIZE);
214		q.addAll(q);
215		shouldThrow();
216		} catch (IllegalArgumentException success) {}
217		}
218
215	–
216	–	/**
217	–	*  addAll of a collection with null elements throws NPE
218	–	*/
219	–	public void testAddAll2() {
220	–	try {
221	–	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
222	–	Integer[] ints = new Integer[SIZE];
223	–	q.addAll(Arrays.asList(ints));
224	–	shouldThrow();
225	–	} catch (NullPointerException success) {}
226	–	}
219		/**
220		* addAll of a collection with any null elements throws NPE after
221		* possibly adding some elements
222		*/
223		public void testAddAll3() {
224	+	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
225	+	Integer[] ints = new Integer[SIZE];
226	+	for (int i = 0; i < SIZE - 1; ++i)
227	+	ints[i] = new Integer(i);
228		try {
233	–	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
234	–	Integer[] ints = new Integer[SIZE];
235	–	for (int i = 0; i < SIZE-1; ++i)
236	–	ints[i] = new Integer(i);
229		q.addAll(Arrays.asList(ints));
230		shouldThrow();
231		} catch (NullPointerException success) {}
232		}
233	+
234		/**
235		* addAll throws ISE if not enough room
236		*/
237		public void testAddAll4() {
238	+	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
239	+	Integer[] ints = new Integer[SIZE];
240	+	for (int i = 0; i < SIZE; ++i)
241	+	ints[i] = new Integer(i);
242		try {
246	–	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
247	–	Integer[] ints = new Integer[SIZE];
248	–	for (int i = 0; i < SIZE; ++i)
249	–	ints[i] = new Integer(i);
243		q.addAll(Arrays.asList(ints));
244		shouldThrow();
245		} catch (IllegalStateException success) {}
246		}
247	+
248		/**
249		* Queue contains all elements, in traversal order, of successful addAll
250		*/
#	Line 267 | Line 261 | public class ArrayBlockingQueueTest exte
261		}
262
263		/**
270	–	*  put(null) throws NPE
271	–	*/
272	–	public void testPutNull() throws InterruptedException {
273	–	try {
274	–	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
275	–	q.put(null);
276	–	shouldThrow();
277	–	} catch (NullPointerException success) {}
278	–	}
279	–
280	–	/**
264		* all elements successfully put are contained
265		*/
266		public void testPut() throws InterruptedException {
267		ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
268		for (int i = 0; i < SIZE; ++i) {
269	<	Integer I = new Integer(i);
270	<	q.put(I);
271	<	assertTrue(q.contains(I));
269	>	Integer x = new Integer(i);
270	>	q.put(x);
271	>	assertTrue(q.contains(x));
272		}
273		assertEquals(0, q.remainingCapacity());
274		}
#	Line 295 | Line 278 | public class ArrayBlockingQueueTest exte
278		*/
279		public void testBlockingPut() throws InterruptedException {
280		final ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
281	<	Thread t = new Thread(new CheckedRunnable() {
281	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
282	>	Thread t = newStartedThread(new CheckedRunnable() {
283		public void realRun() throws InterruptedException {
284		for (int i = 0; i < SIZE; ++i)
285		q.put(i);
286		assertEquals(SIZE, q.size());
287		assertEquals(0, q.remainingCapacity());
288	+
289	+	Thread.currentThread().interrupt();
290		try {
291		q.put(99);
292		shouldThrow();
293		} catch (InterruptedException success) {}
294	+	assertFalse(Thread.interrupted());
295	+
296	+	pleaseInterrupt.countDown();
297	+	try {
298	+	q.put(99);
299	+	shouldThrow();
300	+	} catch (InterruptedException success) {}
301	+	assertFalse(Thread.interrupted());
302		}});
303
304	<	t.start();
305	<	Thread.sleep(SHORT_DELAY_MS);
304	>	await(pleaseInterrupt);
305	>	assertThreadStaysAlive(t);
306		t.interrupt();
307	<	t.join();
307	>	awaitTermination(t);
308		assertEquals(SIZE, q.size());
309		assertEquals(0, q.remainingCapacity());
310		}
311
312		/**
313	<	* put blocks waiting for take when full
313	>	* put blocks interruptibly waiting for take when full
314		*/
315		public void testPutWithTake() throws InterruptedException {
316		final int capacity = 2;
317		final ArrayBlockingQueue q = new ArrayBlockingQueue(capacity);
318	<	Thread t = new Thread(new CheckedRunnable() {
318	>	final CountDownLatch pleaseTake = new CountDownLatch(1);
319	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
320	>	Thread t = newStartedThread(new CheckedRunnable() {
321		public void realRun() throws InterruptedException {
322	<	for (int i = 0; i < capacity + 1; i++)
322	>	for (int i = 0; i < capacity; i++)
323		q.put(i);
324	+	pleaseTake.countDown();
325	+	q.put(86);
326	+
327	+	pleaseInterrupt.countDown();
328		try {
329		q.put(99);
330		shouldThrow();
331		} catch (InterruptedException success) {}
332	+	assertFalse(Thread.interrupted());
333		}});
334
335	<	t.start();
336	<	Thread.sleep(SHORT_DELAY_MS);
336	<	assertEquals(q.remainingCapacity(), 0);
335	>	await(pleaseTake);
336	>	assertEquals(0, q.remainingCapacity());
337		assertEquals(0, q.take());
338	<	Thread.sleep(SHORT_DELAY_MS);
338	>
339	>	await(pleaseInterrupt);
340	>	assertThreadStaysAlive(t);
341		t.interrupt();
342	<	t.join();
343	<	assertEquals(q.remainingCapacity(), 0);
342	>	awaitTermination(t);
343	>	assertEquals(0, q.remainingCapacity());
344		}
345
346		/**
#	Line 346 | Line 348 | public class ArrayBlockingQueueTest exte
348		*/
349		public void testTimedOffer() throws InterruptedException {
350		final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
351	<	Thread t = new Thread(new CheckedRunnable() {
351	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
352	>	Thread t = newStartedThread(new CheckedRunnable() {
353		public void realRun() throws InterruptedException {
354		q.put(new Object());
355		q.put(new Object());
356	<	assertFalse(q.offer(new Object(), SHORT_DELAY_MS/2, MILLISECONDS));
356	>	long startTime = System.nanoTime();
357	>	assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS));
358	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
359	>	pleaseInterrupt.countDown();
360		try {
361	<	q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS);
361	>	q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS);
362		shouldThrow();
363		} catch (InterruptedException success) {}
364		}});
365
366	<	t.start();
367	<	Thread.sleep(SHORT_DELAY_MS);
366	>	await(pleaseInterrupt);
367	>	assertThreadStaysAlive(t);
368		t.interrupt();
369	<	t.join();
369	>	awaitTermination(t);
370		}
371
372		/**
#	Line 374 | Line 380 | public class ArrayBlockingQueueTest exte
380		}
381
382		/**
377	–	* take blocks interruptibly when empty
378	–	*/
379	–	public void testTakeFromEmpty() throws InterruptedException {
380	–	final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
381	–	Thread t = new ThreadShouldThrow(InterruptedException.class) {
382	–	public void realRun() throws InterruptedException {
383	–	q.take();
384	–	}};
385	–
386	–	t.start();
387	–	Thread.sleep(SHORT_DELAY_MS);
388	–	t.interrupt();
389	–	t.join();
390	–	}
391	–
392	–	/**
383		* Take removes existing elements until empty, then blocks interruptibly
384		*/
385		public void testBlockingTake() throws InterruptedException {
386		final ArrayBlockingQueue q = populatedQueue(SIZE);
387	<	Thread t = new Thread(new CheckedRunnable() {
387	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
388	>	Thread t = newStartedThread(new CheckedRunnable() {
389		public void realRun() throws InterruptedException {
390		for (int i = 0; i < SIZE; ++i) {
391		assertEquals(i, q.take());
392		}
393	+
394	+	Thread.currentThread().interrupt();
395		try {
396		q.take();
397		shouldThrow();
398		} catch (InterruptedException success) {}
399	+	assertFalse(Thread.interrupted());
400	+
401	+	pleaseInterrupt.countDown();
402	+	try {
403	+	q.take();
404	+	shouldThrow();
405	+	} catch (InterruptedException success) {}
406	+	assertFalse(Thread.interrupted());
407		}});
408
409	<	t.start();
410	<	Thread.sleep(SHORT_DELAY_MS);
409	>	await(pleaseInterrupt);
410	>	assertThreadStaysAlive(t);
411		t.interrupt();
412	<	t.join();
412	>	awaitTermination(t);
413		}
414
414	–
415		/**
416		* poll succeeds unless empty
417		*/
#	Line 424 | Line 424 | public class ArrayBlockingQueueTest exte
424		}
425
426		/**
427	<	* timed pool with zero timeout succeeds when non-empty, else times out
427	>	* timed poll with zero timeout succeeds when non-empty, else times out
428		*/
429		public void testTimedPoll0() throws InterruptedException {
430		ArrayBlockingQueue q = populatedQueue(SIZE);
#	Line 432 | Line 432 | public class ArrayBlockingQueueTest exte
432		assertEquals(i, q.poll(0, MILLISECONDS));
433		}
434		assertNull(q.poll(0, MILLISECONDS));
435	+	checkEmpty(q);
436		}
437
438		/**
439	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
439	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
440		*/
441		public void testTimedPoll() throws InterruptedException {
442		ArrayBlockingQueue q = populatedQueue(SIZE);
443		for (int i = 0; i < SIZE; ++i) {
444	<	assertEquals(i, q.poll(SHORT_DELAY_MS, MILLISECONDS));
445	<	}
446	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
444	>	long startTime = System.nanoTime();
445	>	assertEquals(i, q.poll(LONG_DELAY_MS, MILLISECONDS));
446	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
447	>	}
448	>	long startTime = System.nanoTime();
449	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
450	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
451	>	checkEmpty(q);
452		}
453
454		/**
#	Line 450 | Line 456 | public class ArrayBlockingQueueTest exte
456		* returning timeout status
457		*/
458		public void testInterruptedTimedPoll() throws InterruptedException {
459	<	Thread t = new Thread(new CheckedRunnable() {
459	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
460	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
461	>	Thread t = newStartedThread(new CheckedRunnable() {
462		public void realRun() throws InterruptedException {
463	<	ArrayBlockingQueue q = populatedQueue(SIZE);
463	>	long startTime = System.nanoTime();
464		for (int i = 0; i < SIZE; ++i) {
465	<	assertEquals(i, q.poll(SHORT_DELAY_MS, MILLISECONDS));;
465	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
466		}
467	<	try {
460	<	q.poll(SMALL_DELAY_MS, MILLISECONDS);
461	<	shouldThrow();
462	<	} catch (InterruptedException success) {}
463	<	}});
464	<
465	<	t.start();
466	<	Thread.sleep(SHORT_DELAY_MS);
467	<	t.interrupt();
468	<	t.join();
469	<	}
470	<
471	<	/**
472	<	*  timed poll before a delayed offer fails; after offer succeeds;
473	<	*  on interruption throws
474	<	*/
475	<	public void testTimedPollWithOffer() throws InterruptedException {
476	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
477	<	Thread t = new Thread(new CheckedRunnable() {
478	<	public void realRun() throws InterruptedException {
479	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
480	<	assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS));
467	>	aboutToWait.countDown();
468		try {
469		q.poll(LONG_DELAY_MS, MILLISECONDS);
470		shouldThrow();
471	<	} catch (InterruptedException success) {}
471	>	} catch (InterruptedException success) {
472	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
473	>	}
474		}});
475
476	<	t.start();
477	<	Thread.sleep(SMALL_DELAY_MS);
489	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
476	>	await(aboutToWait);
477	>	waitForThreadToEnterWaitState(t);
478		t.interrupt();
479	<	t.join();
479	>	awaitTermination(t);
480	>	checkEmpty(q);
481		}
482
494	–
483		/**
484		* peek returns next element, or null if empty
485		*/
#	Line 536 | Line 524 | public class ArrayBlockingQueueTest exte
524		}
525
526		/**
539	–	* remove(x) removes x and returns true if present
540	–	*/
541	–	public void testRemoveElement() {
542	–	ArrayBlockingQueue q = populatedQueue(SIZE);
543	–	for (int i = 1; i < SIZE; i+=2) {
544	–	assertTrue(q.remove(new Integer(i)));
545	–	}
546	–	for (int i = 0; i < SIZE; i+=2) {
547	–	assertTrue(q.remove(new Integer(i)));
548	–	assertFalse(q.remove(new Integer(i+1)));
549	–	}
550	–	assertTrue(q.isEmpty());
551	–	}
552	–
553	–	/**
527		* contains(x) reports true when elements added but not yet removed
528		*/
529		public void testContains() {
#	Line 606 | Line 579 | public class ArrayBlockingQueueTest exte
579		assertTrue(changed);
580
581		assertTrue(q.containsAll(p));
582	<	assertEquals(SIZE-i, q.size());
582	>	assertEquals(SIZE - i, q.size());
583		p.remove();
584		}
585		}
#	Line 619 | Line 592 | public class ArrayBlockingQueueTest exte
592		ArrayBlockingQueue q = populatedQueue(SIZE);
593		ArrayBlockingQueue p = populatedQueue(i);
594		assertTrue(q.removeAll(p));
595	<	assertEquals(SIZE-i, q.size());
595	>	assertEquals(SIZE - i, q.size());
596		for (int j = 0; j < i; ++j) {
597	<	Integer I = (Integer)(p.remove());
598	<	assertFalse(q.contains(I));
597	>	Integer x = (Integer)(p.remove());
598	>	assertFalse(q.contains(x));
599		}
600		}
601		}
602
603	<	/**
604	<	*  toArray contains all elements
632	<	*/
633	<	public void testToArray() throws InterruptedException {
634	<	ArrayBlockingQueue q = populatedQueue(SIZE);
603	>	void checkToArray(ArrayBlockingQueue q) {
604	>	int size = q.size();
605		Object[] o = q.toArray();
606	<	for (int i = 0; i < o.length; i++)
607	<	assertEquals(o[i], q.take());
606	>	assertEquals(size, o.length);
607	>	Iterator it = q.iterator();
608	>	for (int i = 0; i < size; i++) {
609	>	Integer x = (Integer) it.next();
610	>	assertEquals((Integer)o[0] + i, (int) x);
611	>	assertSame(o[i], x);
612	>	}
613		}
614
615		/**
616	<	* toArray(a) contains all elements
616	>	* toArray() contains all elements in FIFO order
617		*/
618	<	public void testToArray2() throws InterruptedException {
619	<	ArrayBlockingQueue q = populatedQueue(SIZE);
620	<	Integer[] ints = new Integer[SIZE];
621	<	ints = (Integer[])q.toArray(ints);
622	<	for (int i = 0; i < ints.length; i++)
623	<	assertEquals(ints[i], q.take());
618	>	public void testToArray() {
619	>	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
620	>	for (int i = 0; i < SIZE; i++) {
621	>	checkToArray(q);
622	>	q.add(i);
623	>	}
624	>	// Provoke wraparound
625	>	for (int i = 0; i < SIZE; i++) {
626	>	checkToArray(q);
627	>	assertEquals(i, q.poll());
628	>	checkToArray(q);
629	>	q.add(SIZE + i);
630	>	}
631	>	for (int i = 0; i < SIZE; i++) {
632	>	checkToArray(q);
633	>	assertEquals(SIZE + i, q.poll());
634	>	}
635	>	}
636	>
637	>	void checkToArray2(ArrayBlockingQueue q) {
638	>	int size = q.size();
639	>	Integer[] a1 = (size == 0) ? null : new Integer[size - 1];
640	>	Integer[] a2 = new Integer[size];
641	>	Integer[] a3 = new Integer[size + 2];
642	>	if (size > 0) Arrays.fill(a1, 42);
643	>	Arrays.fill(a2, 42);
644	>	Arrays.fill(a3, 42);
645	>	Integer[] b1 = (size == 0) ? null : (Integer[]) q.toArray(a1);
646	>	Integer[] b2 = (Integer[]) q.toArray(a2);
647	>	Integer[] b3 = (Integer[]) q.toArray(a3);
648	>	assertSame(a2, b2);
649	>	assertSame(a3, b3);
650	>	Iterator it = q.iterator();
651	>	for (int i = 0; i < size; i++) {
652	>	Integer x = (Integer) it.next();
653	>	assertSame(b1[i], x);
654	>	assertEquals(b1[0] + i, (int) x);
655	>	assertSame(b2[i], x);
656	>	assertSame(b3[i], x);
657	>	}
658	>	assertNull(a3[size]);
659	>	assertEquals(42, (int) a3[size + 1]);
660	>	if (size > 0) {
661	>	assertNotSame(a1, b1);
662	>	assertEquals(size, b1.length);
663	>	for (int i = 0; i < a1.length; i++) {
664	>	assertEquals(42, (int) a1[i]);
665	>	}
666	>	}
667		}
668
669		/**
670	<	* toArray(null) throws NPE
670	>	* toArray(a) contains all elements in FIFO order
671		*/
672	<	public void testToArray_BadArg() {
673	<	ArrayBlockingQueue q = populatedQueue(SIZE);
674	<	try {
675	<	Object o[] = q.toArray(null);
676	<	shouldThrow();
677	<	} catch (NullPointerException success) {}
672	>	public void testToArray2() {
673	>	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
674	>	for (int i = 0; i < SIZE; i++) {
675	>	checkToArray2(q);
676	>	q.add(i);
677	>	}
678	>	// Provoke wraparound
679	>	for (int i = 0; i < SIZE; i++) {
680	>	checkToArray2(q);
681	>	assertEquals(i, q.poll());
682	>	checkToArray2(q);
683	>	q.add(SIZE + i);
684	>	}
685	>	for (int i = 0; i < SIZE; i++) {
686	>	checkToArray2(q);
687	>	assertEquals(SIZE + i, q.poll());
688	>	}
689		}
690
691		/**
692	<	* toArray with incompatible array type throws CCE
692	>	* toArray(incompatible array type) throws ArrayStoreException
693		*/
694		public void testToArray1_BadArg() {
695		ArrayBlockingQueue q = populatedQueue(SIZE);
696		try {
697	<	Object o[] = q.toArray(new String[10]);
697	>	q.toArray(new String[10]);
698		shouldThrow();
699		} catch (ArrayStoreException success) {}
700		}
701
673	–
702		/**
703		* iterator iterates through all elements
704		*/
705		public void testIterator() throws InterruptedException {
706		ArrayBlockingQueue q = populatedQueue(SIZE);
707		Iterator it = q.iterator();
708	<	while (it.hasNext()) {
708	>	int i;
709	>	for (i = 0; it.hasNext(); i++)
710	>	assertTrue(q.contains(it.next()));
711	>	assertEquals(i, SIZE);
712	>	assertIteratorExhausted(it);
713	>
714	>	it = q.iterator();
715	>	for (i = 0; it.hasNext(); i++)
716		assertEquals(it.next(), q.take());
717	<	}
717	>	assertEquals(i, SIZE);
718	>	assertIteratorExhausted(it);
719	>	}
720	>
721	>	/**
722	>	* iterator of empty collection has no elements
723	>	*/
724	>	public void testEmptyIterator() {
725	>	assertIteratorExhausted(new ArrayBlockingQueue(SIZE).iterator());
726		}
727
728		/**
#	Line 734 | Line 777 | public class ArrayBlockingQueueTest exte
777		assertEquals(0, q.size());
778		}
779
737	–
780		/**
781		* toString contains toStrings of elements
782		*/
#	Line 742 | Line 784 | public class ArrayBlockingQueueTest exte
784		ArrayBlockingQueue q = populatedQueue(SIZE);
785		String s = q.toString();
786		for (int i = 0; i < SIZE; ++i) {
787	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
787	>	assertTrue(s.contains(String.valueOf(i)));
788		}
789		}
790
749	–
791		/**
792		* offer transfers elements across Executor tasks
793		*/
#	Line 754 | Line 795 | public class ArrayBlockingQueueTest exte
795		final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
796		q.add(one);
797		q.add(two);
798	<	ExecutorService executor = Executors.newFixedThreadPool(2);
799	<	executor.execute(new CheckedRunnable() {
800	<	public void realRun() throws InterruptedException {
801	<	assertFalse(q.offer(three));
802	<	assertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS));
803	<	assertEquals(0, q.remainingCapacity());
804	<	}});
805	<
806	<	executor.execute(new CheckedRunnable() {
807	<	public void realRun() throws InterruptedException {
808	<	Thread.sleep(SMALL_DELAY_MS);
809	<	assertSame(one, q.take());
810	<	}});
811	<
812	<	joinPool(executor);
798	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
799	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
800	>	try (PoolCleaner cleaner = cleaner(executor)) {
801	>	executor.execute(new CheckedRunnable() {
802	>	public void realRun() throws InterruptedException {
803	>	assertFalse(q.offer(three));
804	>	threadsStarted.await();
805	>	assertTrue(q.offer(three, LONG_DELAY_MS, MILLISECONDS));
806	>	assertEquals(0, q.remainingCapacity());
807	>	}});
808	>
809	>	executor.execute(new CheckedRunnable() {
810	>	public void realRun() throws InterruptedException {
811	>	threadsStarted.await();
812	>	assertEquals(0, q.remainingCapacity());
813	>	assertSame(one, q.take());
814	>	}});
815	>	}
816		}
817
818		/**
819	<	* poll retrieves elements across Executor threads
819	>	* timed poll retrieves elements across Executor threads
820		*/
821		public void testPollInExecutor() {
822		final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
823	<	ExecutorService executor = Executors.newFixedThreadPool(2);
824	<	executor.execute(new CheckedRunnable() {
825	<	public void realRun() throws InterruptedException {
826	<	assertNull(q.poll());
827	<	assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
828	<	assertTrue(q.isEmpty());
829	<	}});
830	<
831	<	executor.execute(new CheckedRunnable() {
832	<	public void realRun() throws InterruptedException {
833	<	Thread.sleep(SMALL_DELAY_MS);
834	<	q.put(one);
835	<	}});
836	<
837	<	joinPool(executor);
823	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
824	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
825	>	try (PoolCleaner cleaner = cleaner(executor)) {
826	>	executor.execute(new CheckedRunnable() {
827	>	public void realRun() throws InterruptedException {
828	>	assertNull(q.poll());
829	>	threadsStarted.await();
830	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
831	>	checkEmpty(q);
832	>	}});
833	>
834	>	executor.execute(new CheckedRunnable() {
835	>	public void realRun() throws InterruptedException {
836	>	threadsStarted.await();
837	>	q.put(one);
838	>	}});
839	>	}
840		}
841
842		/**
843		* A deserialized serialized queue has same elements in same order
844		*/
845		public void testSerialization() throws Exception {
846	<	ArrayBlockingQueue q = populatedQueue(SIZE);
847	<
802	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
803	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
804	<	out.writeObject(q);
805	<	out.close();
806	<
807	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
808	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
809	<	ArrayBlockingQueue r = (ArrayBlockingQueue)in.readObject();
810	<	assertEquals(q.size(), r.size());
811	<	while (!q.isEmpty())
812	<	assertEquals(q.remove(), r.remove());
813	<	}
814	<
815	<	/**
816	<	* drainTo(null) throws NPE
817	<	*/
818	<	public void testDrainToNull() {
819	<	ArrayBlockingQueue q = populatedQueue(SIZE);
820	<	try {
821	<	q.drainTo(null);
822	<	shouldThrow();
823	<	} catch (NullPointerException success) {}
824	<	}
846	>	Queue x = populatedQueue(SIZE);
847	>	Queue y = serialClone(x);
848
849	<	/**
850	<	* drainTo(this) throws IAE
851	<	*/
852	<	public void testDrainToSelf() {
853	<	ArrayBlockingQueue q = populatedQueue(SIZE);
854	<	try {
855	<	q.drainTo(q);
856	<	shouldThrow();
857	<	} catch (IllegalArgumentException success) {}
849	>	assertNotSame(x, y);
850	>	assertEquals(x.size(), y.size());
851	>	assertEquals(x.toString(), y.toString());
852	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
853	>	while (!x.isEmpty()) {
854	>	assertFalse(y.isEmpty());
855	>	assertEquals(x.remove(), y.remove());
856	>	}
857	>	assertTrue(y.isEmpty());
858		}
859
860		/**
#	Line 841 | Line 864 | public class ArrayBlockingQueueTest exte
864		ArrayBlockingQueue q = populatedQueue(SIZE);
865		ArrayList l = new ArrayList();
866		q.drainTo(l);
867	<	assertEquals(q.size(), 0);
868	<	assertEquals(l.size(), SIZE);
867	>	assertEquals(0, q.size());
868	>	assertEquals(SIZE, l.size());
869		for (int i = 0; i < SIZE; ++i)
870		assertEquals(l.get(i), new Integer(i));
871		q.add(zero);
#	Line 852 | Line 875 | public class ArrayBlockingQueueTest exte
875		assertTrue(q.contains(one));
876		l.clear();
877		q.drainTo(l);
878	<	assertEquals(q.size(), 0);
879	<	assertEquals(l.size(), 2);
878	>	assertEquals(0, q.size());
879	>	assertEquals(2, l.size());
880		for (int i = 0; i < 2; ++i)
881		assertEquals(l.get(i), new Integer(i));
882		}
#	Line 865 | Line 888 | public class ArrayBlockingQueueTest exte
888		final ArrayBlockingQueue q = populatedQueue(SIZE);
889		Thread t = new Thread(new CheckedRunnable() {
890		public void realRun() throws InterruptedException {
891	<	q.put(new Integer(SIZE+1));
891	>	q.put(new Integer(SIZE + 1));
892		}});
893
894		t.start();
#	Line 879 | Line 902 | public class ArrayBlockingQueueTest exte
902		}
903
904		/**
905	<	* drainTo(null, n) throws NPE
883	<	*/
884	<	public void testDrainToNullN() {
885	<	ArrayBlockingQueue q = populatedQueue(SIZE);
886	<	try {
887	<	q.drainTo(null, 0);
888	<	shouldThrow();
889	<	} catch (NullPointerException success) {}
890	<	}
891	<
892	<	/**
893	<	* drainTo(this, n) throws IAE
894	<	*/
895	<	public void testDrainToSelfN() {
896	<	ArrayBlockingQueue q = populatedQueue(SIZE);
897	<	try {
898	<	q.drainTo(q, 0);
899	<	shouldThrow();
900	<	} catch (IllegalArgumentException success) {}
901	<	}
902	<
903	<	/**
904	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
905	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
906		*/
907		public void testDrainToN() {
908	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE*2);
908	>	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE * 2);
909		for (int i = 0; i < SIZE + 2; ++i) {
910		for (int j = 0; j < SIZE; j++)
911		assertTrue(q.offer(new Integer(j)));
912		ArrayList l = new ArrayList();
913		q.drainTo(l, i);
914	<	int k = (i < SIZE)? i : SIZE;
915	<	assertEquals(l.size(), k);
916	<	assertEquals(q.size(), SIZE-k);
914	>	int k = (i < SIZE) ? i : SIZE;
915	>	assertEquals(k, l.size());
916	>	assertEquals(SIZE - k, q.size());
917		for (int j = 0; j < k; ++j)
918		assertEquals(l.get(j), new Integer(j));
919	<	while (q.poll() != null) ;
919	>	do {} while (q.poll() != null);
920		}
921		}
922
923	+	/**
924	+	* remove(null), contains(null) always return false
925	+	*/
926	+	public void testNeverContainsNull() {
927	+	Collection<?>[] qs = {
928	+	new ArrayBlockingQueue<Object>(10),
929	+	populatedQueue(2),
930	+	};
931	+
932	+	for (Collection<?> q : qs) {
933	+	assertFalse(q.contains(null));
934	+	assertFalse(q.remove(null));
935	+	}
936	+	}
937		}

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