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Comparing jsr166/src/test/tck/ArrayBlockingQueueTest.java (file contents):
Revision 1.15 by jsr166, Sat Nov 21 02:07:26 2009 UTC vs.
Revision 1.76 by jsr166, Sun Nov 6 02:40:38 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	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10
11	<	import junit.framework.*;
12	<	import java.util.*;
13	<	import java.util.concurrent.*;
14	<	import java.io.*;
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	>	import java.util.concurrent.ThreadLocalRandom;
23	>
24	>	import junit.framework.Test;
25
26		public class ArrayBlockingQueueTest extends JSR166TestCase {
27	+
28		public static void main(String[] args) {
29	<	junit.textui.TestRunner.run (suite());
29	>	main(suite(), args);
30		}
31	+
32		public static Test suite() {
33	<	return new TestSuite(ArrayBlockingQueueTest.class);
33	>	class Implementation implements CollectionImplementation {
34	>	public Class<?> klazz() { return ArrayBlockingQueue.class; }
35	>	public Collection emptyCollection() {
36	>	boolean fair = ThreadLocalRandom.current().nextBoolean();
37	>	return populatedQueue(0, SIZE, 2 * SIZE, fair);
38	>	}
39	>	public Object makeElement(int i) { return i; }
40	>	public boolean isConcurrent() { return true; }
41	>	public boolean permitsNulls() { return false; }
42	>	}
43	>
44	>	return newTestSuite(
45	>	ArrayBlockingQueueTest.class,
46	>	new Fair().testSuite(),
47	>	new NonFair().testSuite(),
48	>	CollectionTest.testSuite(new Implementation()));
49	>	}
50	>
51	>	public static class Fair extends BlockingQueueTest {
52	>	protected BlockingQueue emptyCollection() {
53	>	return populatedQueue(0, SIZE, 2 * SIZE, true);
54	>	}
55	>	}
56	>
57	>	public static class NonFair extends BlockingQueueTest {
58	>	protected BlockingQueue emptyCollection() {
59	>	return populatedQueue(0, SIZE, 2 * SIZE, false);
60	>	}
61		}
62
63		/**
64	<	* Create a queue of given size containing consecutive
65	<	* Integers 0 ... n.
64	>	* Returns a new queue of given size containing consecutive
65	>	* Integers 0 ... n - 1.
66		*/
67	<	private ArrayBlockingQueue populatedQueue(int n) {
68	<	ArrayBlockingQueue q = new ArrayBlockingQueue(n);
67	>	static ArrayBlockingQueue<Integer> populatedQueue(int n) {
68	>	return populatedQueue(n, n, n, false);
69	>	}
70	>
71	>	/**
72	>	* Returns a new queue of given size containing consecutive
73	>	* Integers 0 ... n - 1, with given capacity range and fairness.
74	>	*/
75	>	static ArrayBlockingQueue<Integer> populatedQueue(
76	>	int size, int minCapacity, int maxCapacity, boolean fair) {
77	>	ThreadLocalRandom rnd = ThreadLocalRandom.current();
78	>	int capacity = rnd.nextInt(minCapacity, maxCapacity + 1);
79	>	ArrayBlockingQueue<Integer> q = new ArrayBlockingQueue<>(capacity);
80		assertTrue(q.isEmpty());
81	<	for (int i = 0; i < n; i++)
82	<	assertTrue(q.offer(new Integer(i)));
83	<	assertFalse(q.isEmpty());
84	<	assertEquals(0, q.remainingCapacity());
85	<	assertEquals(n, q.size());
81	>	// shuffle circular array elements so they wrap
82	>	{
83	>	int n = rnd.nextInt(capacity);
84	>	for (int i = 0; i < n; i++) q.add(42);
85	>	for (int i = 0; i < n; i++) q.remove();
86	>	}
87	>	for (int i = 0; i < size; i++)
88	>	assertTrue(q.offer((Integer) i));
89	>	assertEquals(size == 0, q.isEmpty());
90	>	assertEquals(capacity - size, q.remainingCapacity());
91	>	assertEquals(size, q.size());
92	>	if (size > 0)
93	>	assertEquals((Integer) 0, q.peek());
94		return q;
95		}
96
#	Line 43 | Line 102 | public class ArrayBlockingQueueTest exte
102		}
103
104		/**
105	<	* Constructor throws IAE if  capacity argument nonpositive
105	>	* Constructor throws IAE if capacity argument nonpositive
106		*/
107		public void testConstructor2() {
108		try {
109	<	ArrayBlockingQueue q = new ArrayBlockingQueue(0);
109	>	new ArrayBlockingQueue(0);
110		shouldThrow();
111	<	}
53	<	catch (IllegalArgumentException success) {}
111	>	} catch (IllegalArgumentException success) {}
112		}
113
114		/**
#	Line 58 | Line 116 | public class ArrayBlockingQueueTest exte
116		*/
117		public void testConstructor3() {
118		try {
119	<	ArrayBlockingQueue q = new ArrayBlockingQueue(1, true, null);
119	>	new ArrayBlockingQueue(1, true, null);
120		shouldThrow();
121	<	}
64	<	catch (NullPointerException success) {}
121	>	} catch (NullPointerException success) {}
122		}
123
124		/**
125		* Initializing from Collection of null elements throws NPE
126		*/
127		public void testConstructor4() {
128	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
129		try {
130	<	Integer[] ints = new Integer[SIZE];
73	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, false, Arrays.asList(ints));
130	>	new ArrayBlockingQueue(SIZE, false, elements);
131		shouldThrow();
132	<	}
76	<	catch (NullPointerException success) {}
132	>	} catch (NullPointerException success) {}
133		}
134
135		/**
136		* Initializing from Collection with some null elements throws NPE
137		*/
138		public void testConstructor5() {
139	+	Integer[] ints = new Integer[SIZE];
140	+	for (int i = 0; i < SIZE - 1; ++i)
141	+	ints[i] = i;
142	+	Collection<Integer> elements = Arrays.asList(ints);
143		try {
144	<	Integer[] ints = new Integer[SIZE];
85	<	for (int i = 0; i < SIZE-1; ++i)
86	<	ints[i] = new Integer(i);
87	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, false, Arrays.asList(ints));
144	>	new ArrayBlockingQueue(SIZE, false, elements);
145		shouldThrow();
146	<	}
90	<	catch (NullPointerException success) {}
146	>	} catch (NullPointerException success) {}
147		}
148
149		/**
150		* Initializing from too large collection throws IAE
151		*/
152		public void testConstructor6() {
153	+	Integer[] ints = new Integer[SIZE];
154	+	for (int i = 0; i < SIZE; ++i)
155	+	ints[i] = i;
156	+	Collection<Integer> elements = Arrays.asList(ints);
157		try {
158	<	Integer[] ints = new Integer[SIZE];
99	<	for (int i = 0; i < SIZE; ++i)
100	<	ints[i] = new Integer(i);
101	<	ArrayBlockingQueue q = new ArrayBlockingQueue(1, false, Arrays.asList(ints));
158	>	new ArrayBlockingQueue(SIZE - 1, false, elements);
159		shouldThrow();
160	<	}
104	<	catch (IllegalArgumentException success) {}
160	>	} catch (IllegalArgumentException success) {}
161		}
162
163		/**
164		* Queue contains all elements of collection used to initialize
165		*/
166		public void testConstructor7() {
167	<	try {
168	<	Integer[] ints = new Integer[SIZE];
169	<	for (int i = 0; i < SIZE; ++i)
170	<	ints[i] = new Integer(i);
171	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, true, Arrays.asList(ints));
172	<	for (int i = 0; i < SIZE; ++i)
173	<	assertEquals(ints[i], q.poll());
118	<	}
119	<	finally {}
167	>	Integer[] ints = new Integer[SIZE];
168	>	for (int i = 0; i < SIZE; ++i)
169	>	ints[i] = i;
170	>	Collection<Integer> elements = Arrays.asList(ints);
171	>	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, true, elements);
172	>	for (int i = 0; i < SIZE; ++i)
173	>	assertEquals(ints[i], q.poll());
174		}
175
176		/**
#	Line 138 | Line 192 | public class ArrayBlockingQueueTest exte
192		* remainingCapacity decreases on add, increases on remove
193		*/
194		public void testRemainingCapacity() {
195	<	ArrayBlockingQueue q = populatedQueue(SIZE);
195	>	BlockingQueue q = populatedQueue(SIZE);
196		for (int i = 0; i < SIZE; ++i) {
197		assertEquals(i, q.remainingCapacity());
198	<	assertEquals(SIZE-i, q.size());
199	<	q.remove();
198	>	assertEquals(SIZE, q.size() + q.remainingCapacity());
199	>	assertEquals(i, q.remove());
200		}
201		for (int i = 0; i < SIZE; ++i) {
202	<	assertEquals(SIZE-i, q.remainingCapacity());
203	<	assertEquals(i, q.size());
204	<	q.add(new Integer(i));
202	>	assertEquals(SIZE - i, q.remainingCapacity());
203	>	assertEquals(SIZE, q.size() + q.remainingCapacity());
204	>	assertTrue(q.add(i));
205		}
206		}
207
208		/**
155	–	*  offer(null) throws NPE
156	–	*/
157	–	public void testOfferNull() {
158	–	try {
159	–	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
160	–	q.offer(null);
161	–	shouldThrow();
162	–	} catch (NullPointerException success) { }
163	–	}
164	–
165	–	/**
166	–	*  add(null) throws NPE
167	–	*/
168	–	public void testAddNull() {
169	–	try {
170	–	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
171	–	q.add(null);
172	–	shouldThrow();
173	–	} catch (NullPointerException success) { }
174	–	}
175	–
176	–	/**
209		* Offer succeeds if not full; fails if full
210		*/
211		public void testOffer() {
#	Line 186 | Line 218 | public class ArrayBlockingQueueTest exte
218		* add succeeds if not full; throws ISE if full
219		*/
220		public void testAdd() {
221	<	try {
222	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
223	<	for (int i = 0; i < SIZE; ++i) {
192	<	assertTrue(q.add(new Integer(i)));
193	<	}
194	<	assertEquals(0, q.remainingCapacity());
195	<	q.add(new Integer(SIZE));
196	<	} catch (IllegalStateException success) {
221	>	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
222	>	for (int i = 0; i < SIZE; ++i) {
223	>	assertTrue(q.add(new Integer(i)));
224		}
225	<	}
199	<
200	<	/**
201	<	*  addAll(null) throws NPE
202	<	*/
203	<	public void testAddAll1() {
225	>	assertEquals(0, q.remainingCapacity());
226		try {
227	<	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
206	<	q.addAll(null);
227	>	q.add(new Integer(SIZE));
228		shouldThrow();
229	<	}
209	<	catch (NullPointerException success) {}
229	>	} catch (IllegalStateException success) {}
230		}
231
232		/**
233		* addAll(this) throws IAE
234		*/
235		public void testAddAllSelf() {
236	+	ArrayBlockingQueue q = populatedQueue(SIZE);
237		try {
217	–	ArrayBlockingQueue q = populatedQueue(SIZE);
238		q.addAll(q);
239		shouldThrow();
240	<	}
221	<	catch (IllegalArgumentException success) {}
240	>	} catch (IllegalArgumentException success) {}
241		}
242
224	–
225	–	/**
226	–	*  addAll of a collection with null elements throws NPE
227	–	*/
228	–	public void testAddAll2() {
229	–	try {
230	–	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
231	–	Integer[] ints = new Integer[SIZE];
232	–	q.addAll(Arrays.asList(ints));
233	–	shouldThrow();
234	–	}
235	–	catch (NullPointerException success) {}
236	–	}
243		/**
244		* addAll of a collection with any null elements throws NPE after
245		* possibly adding some elements
246		*/
247		public void testAddAll3() {
248	+	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
249	+	Integer[] ints = new Integer[SIZE];
250	+	for (int i = 0; i < SIZE - 1; ++i)
251	+	ints[i] = new Integer(i);
252		try {
243	–	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
244	–	Integer[] ints = new Integer[SIZE];
245	–	for (int i = 0; i < SIZE-1; ++i)
246	–	ints[i] = new Integer(i);
253		q.addAll(Arrays.asList(ints));
254		shouldThrow();
255	<	}
250	<	catch (NullPointerException success) {}
255	>	} catch (NullPointerException success) {}
256		}
257	+
258		/**
259		* addAll throws ISE if not enough room
260		*/
261		public void testAddAll4() {
262	+	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
263	+	Integer[] ints = new Integer[SIZE];
264	+	for (int i = 0; i < SIZE; ++i)
265	+	ints[i] = new Integer(i);
266		try {
257	–	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
258	–	Integer[] ints = new Integer[SIZE];
259	–	for (int i = 0; i < SIZE; ++i)
260	–	ints[i] = new Integer(i);
267		q.addAll(Arrays.asList(ints));
268		shouldThrow();
269	<	}
264	<	catch (IllegalStateException success) {}
269	>	} catch (IllegalStateException success) {}
270		}
271	+
272		/**
273		* Queue contains all elements, in traversal order, of successful addAll
274		*/
275		public void testAddAll5() {
276	<	try {
277	<	Integer[] empty = new Integer[0];
278	<	Integer[] ints = new Integer[SIZE];
279	<	for (int i = 0; i < SIZE; ++i)
280	<	ints[i] = new Integer(i);
281	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
282	<	assertFalse(q.addAll(Arrays.asList(empty)));
283	<	assertTrue(q.addAll(Arrays.asList(ints)));
284	<	for (int i = 0; i < SIZE; ++i)
279	<	assertEquals(ints[i], q.poll());
280	<	}
281	<	finally {}
276	>	Integer[] empty = new Integer[0];
277	>	Integer[] ints = new Integer[SIZE];
278	>	for (int i = 0; i < SIZE; ++i)
279	>	ints[i] = new Integer(i);
280	>	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
281	>	assertFalse(q.addAll(Arrays.asList(empty)));
282	>	assertTrue(q.addAll(Arrays.asList(ints)));
283	>	for (int i = 0; i < SIZE; ++i)
284	>	assertEquals(ints[i], q.poll());
285		}
286
287		/**
285	–	*  put(null) throws NPE
286	–	*/
287	–	public void testPutNull() {
288	–	try {
289	–	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
290	–	q.put(null);
291	–	shouldThrow();
292	–	}
293	–	catch (NullPointerException success) {
294	–	}
295	–	catch (InterruptedException ie) {
296	–	unexpectedException();
297	–	}
298	–	}
299	–
300	–	/**
288		* all elements successfully put are contained
289		*/
290	<	public void testPut() {
291	<	try {
292	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
293	<	for (int i = 0; i < SIZE; ++i) {
294	<	Integer I = new Integer(i);
295	<	q.put(I);
309	<	assertTrue(q.contains(I));
310	<	}
311	<	assertEquals(0, q.remainingCapacity());
312	<	}
313	<	catch (InterruptedException ie) {
314	<	unexpectedException();
290	>	public void testPut() throws InterruptedException {
291	>	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
292	>	for (int i = 0; i < SIZE; ++i) {
293	>	Integer x = new Integer(i);
294	>	q.put(x);
295	>	assertTrue(q.contains(x));
296		}
297	+	assertEquals(0, q.remainingCapacity());
298		}
299
300		/**
301		* put blocks interruptibly if full
302		*/
303	<	public void testBlockingPut() {
303	>	public void testBlockingPut() throws InterruptedException {
304		final ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
305	<	Thread t = new Thread(new Runnable() {
306	<	public void run() {
307	<	int added = 0;
308	<	try {
309	<	for (int i = 0; i < SIZE; ++i) {
310	<	q.put(new Integer(i));
311	<	++added;
312	<	}
313	<	q.put(new Integer(SIZE));
314	<	threadShouldThrow();
315	<	} catch (InterruptedException ie) {
316	<	threadAssertEquals(added, SIZE);
317	<	}
318	<	}});
319	<	try {
320	<	t.start();
321	<	Thread.sleep(MEDIUM_DELAY_MS);
322	<	t.interrupt();
323	<	t.join();
324	<	}
325	<	catch (InterruptedException ie) {
326	<	unexpectedException();
327	<	}
305	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
306	>	Thread t = newStartedThread(new CheckedRunnable() {
307	>	public void realRun() throws InterruptedException {
308	>	for (int i = 0; i < SIZE; ++i)
309	>	q.put(i);
310	>	assertEquals(SIZE, q.size());
311	>	assertEquals(0, q.remainingCapacity());
312	>
313	>	Thread.currentThread().interrupt();
314	>	try {
315	>	q.put(99);
316	>	shouldThrow();
317	>	} catch (InterruptedException success) {}
318	>	assertFalse(Thread.interrupted());
319	>
320	>	pleaseInterrupt.countDown();
321	>	try {
322	>	q.put(99);
323	>	shouldThrow();
324	>	} catch (InterruptedException success) {}
325	>	assertFalse(Thread.interrupted());
326	>	}});
327	>
328	>	await(pleaseInterrupt);
329	>	assertThreadStaysAlive(t);
330	>	t.interrupt();
331	>	awaitTermination(t);
332	>	assertEquals(SIZE, q.size());
333	>	assertEquals(0, q.remainingCapacity());
334		}
335
336		/**
337	<	* put blocks waiting for take when full
337	>	* put blocks interruptibly waiting for take when full
338		*/
339	<	public void testPutWithTake() {
340	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
341	<	Thread t = new Thread(new Runnable() {
342	<	public void run() {
343	<	int added = 0;
344	<	try {
345	<	q.put(new Object());
346	<	++added;
347	<	q.put(new Object());
348	<	++added;
349	<	q.put(new Object());
350	<	++added;
351	<	q.put(new Object());
352	<	++added;
353	<	threadShouldThrow();
354	<	} catch (InterruptedException e) {
355	<	threadAssertTrue(added >= 2);
356	<	}
357	<	}
358	<	});
359	<	try {
360	<	t.start();
361	<	Thread.sleep(SHORT_DELAY_MS);
362	<	q.take();
363	<	t.interrupt();
364	<	t.join();
365	<	} catch (Exception e) {
366	<	unexpectedException();
367	<	}
339	>	public void testPutWithTake() throws InterruptedException {
340	>	final int capacity = 2;
341	>	final ArrayBlockingQueue q = new ArrayBlockingQueue(capacity);
342	>	final CountDownLatch pleaseTake = new CountDownLatch(1);
343	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
344	>	Thread t = newStartedThread(new CheckedRunnable() {
345	>	public void realRun() throws InterruptedException {
346	>	for (int i = 0; i < capacity; i++)
347	>	q.put(i);
348	>	pleaseTake.countDown();
349	>	q.put(86);
350	>
351	>	pleaseInterrupt.countDown();
352	>	try {
353	>	q.put(99);
354	>	shouldThrow();
355	>	} catch (InterruptedException success) {}
356	>	assertFalse(Thread.interrupted());
357	>	}});
358	>
359	>	await(pleaseTake);
360	>	assertEquals(0, q.remainingCapacity());
361	>	assertEquals(0, q.take());
362	>
363	>	await(pleaseInterrupt);
364	>	assertThreadStaysAlive(t);
365	>	t.interrupt();
366	>	awaitTermination(t);
367	>	assertEquals(0, q.remainingCapacity());
368		}
369
370		/**
371		* timed offer times out if full and elements not taken
372		*/
373	<	public void testTimedOffer() {
373	>	public void testTimedOffer() throws InterruptedException {
374		final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
375	<	Thread t = new Thread(new Runnable() {
376	<	public void run() {
377	<	try {
378	<	q.put(new Object());
379	<	q.put(new Object());
380	<	threadAssertFalse(q.offer(new Object(), SHORT_DELAY_MS/2, TimeUnit.MILLISECONDS));
381	<	q.offer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS);
382	<	threadShouldThrow();
383	<	} catch (InterruptedException success) {}
384	<	}
385	<	});
386	<
387	<	try {
388	<	t.start();
389	<	Thread.sleep(SHORT_DELAY_MS);
390	<	t.interrupt();
391	<	t.join();
392	<	} catch (Exception e) {
393	<	unexpectedException();
406	<	}
375	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
376	>	Thread t = newStartedThread(new CheckedRunnable() {
377	>	public void realRun() throws InterruptedException {
378	>	q.put(new Object());
379	>	q.put(new Object());
380	>	long startTime = System.nanoTime();
381	>	assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS));
382	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
383	>	pleaseInterrupt.countDown();
384	>	try {
385	>	q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS);
386	>	shouldThrow();
387	>	} catch (InterruptedException success) {}
388	>	}});
389	>
390	>	await(pleaseInterrupt);
391	>	assertThreadStaysAlive(t);
392	>	t.interrupt();
393	>	awaitTermination(t);
394		}
395
396		/**
397		* take retrieves elements in FIFO order
398		*/
399	<	public void testTake() {
400	<	try {
401	<	ArrayBlockingQueue q = populatedQueue(SIZE);
402	<	for (int i = 0; i < SIZE; ++i) {
416	<	assertEquals(i, ((Integer)q.take()).intValue());
417	<	}
418	<	} catch (InterruptedException e) {
419	<	unexpectedException();
399	>	public void testTake() throws InterruptedException {
400	>	ArrayBlockingQueue q = populatedQueue(SIZE);
401	>	for (int i = 0; i < SIZE; ++i) {
402	>	assertEquals(i, q.take());
403		}
404		}
405
406		/**
407	<	* take blocks interruptibly when empty
407	>	* Take removes existing elements until empty, then blocks interruptibly
408		*/
409	<	public void testTakeFromEmpty() {
410	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
411	<	Thread t = new Thread(new Runnable() {
412	<	public void run() {
413	<	try {
414	<	q.take();
415	<	threadShouldThrow();
433	<	} catch (InterruptedException success) { }
409	>	public void testBlockingTake() throws InterruptedException {
410	>	final ArrayBlockingQueue q = populatedQueue(SIZE);
411	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
412	>	Thread t = newStartedThread(new CheckedRunnable() {
413	>	public void realRun() throws InterruptedException {
414	>	for (int i = 0; i < SIZE; ++i) {
415	>	assertEquals(i, q.take());
416		}
435	–	});
436	–	try {
437	–	t.start();
438	–	Thread.sleep(SHORT_DELAY_MS);
439	–	t.interrupt();
440	–	t.join();
441	–	} catch (Exception e) {
442	–	unexpectedException();
443	–	}
444	–	}
417
418	<	/**
419	<	* Take removes existing elements until empty, then blocks interruptibly
420	<	*/
421	<	public void testBlockingTake() {
422	<	Thread t = new Thread(new Runnable() {
423	<	public void run() {
452	<	try {
453	<	ArrayBlockingQueue q = populatedQueue(SIZE);
454	<	for (int i = 0; i < SIZE; ++i) {
455	<	threadAssertEquals(i, ((Integer)q.take()).intValue());
456	<	}
457	<	q.take();
458	<	threadShouldThrow();
459	<	} catch (InterruptedException success) {
460	<	}
461	<	}});
462	<	try {
463	<	t.start();
464	<	Thread.sleep(SHORT_DELAY_MS);
465	<	t.interrupt();
466	<	t.join();
467	<	}
468	<	catch (InterruptedException ie) {
469	<	unexpectedException();
470	<	}
471	<	}
418	>	Thread.currentThread().interrupt();
419	>	try {
420	>	q.take();
421	>	shouldThrow();
422	>	} catch (InterruptedException success) {}
423	>	assertFalse(Thread.interrupted());
424
425	+	pleaseInterrupt.countDown();
426	+	try {
427	+	q.take();
428	+	shouldThrow();
429	+	} catch (InterruptedException success) {}
430	+	assertFalse(Thread.interrupted());
431	+	}});
432	+
433	+	await(pleaseInterrupt);
434	+	assertThreadStaysAlive(t);
435	+	t.interrupt();
436	+	awaitTermination(t);
437	+	}
438
439		/**
440		* poll succeeds unless empty
#	Line 477 | Line 442 | public class ArrayBlockingQueueTest exte
442		public void testPoll() {
443		ArrayBlockingQueue q = populatedQueue(SIZE);
444		for (int i = 0; i < SIZE; ++i) {
445	<	assertEquals(i, ((Integer)q.poll()).intValue());
445	>	assertEquals(i, q.poll());
446		}
447		assertNull(q.poll());
448		}
449
450		/**
451	<	* timed pool with zero timeout succeeds when non-empty, else times out
451	>	* timed poll with zero timeout succeeds when non-empty, else times out
452		*/
453	<	public void testTimedPoll0() {
454	<	try {
455	<	ArrayBlockingQueue q = populatedQueue(SIZE);
456	<	for (int i = 0; i < SIZE; ++i) {
492	<	assertEquals(i, ((Integer)q.poll(0, TimeUnit.MILLISECONDS)).intValue());
493	<	}
494	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
495	<	} catch (InterruptedException e) {
496	<	unexpectedException();
453	>	public void testTimedPoll0() throws InterruptedException {
454	>	ArrayBlockingQueue q = populatedQueue(SIZE);
455	>	for (int i = 0; i < SIZE; ++i) {
456	>	assertEquals(i, q.poll(0, MILLISECONDS));
457		}
458	+	assertNull(q.poll(0, MILLISECONDS));
459	+	checkEmpty(q);
460		}
461
462		/**
463	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
463	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
464		*/
465	<	public void testTimedPoll() {
466	<	try {
467	<	ArrayBlockingQueue q = populatedQueue(SIZE);
468	<	for (int i = 0; i < SIZE; ++i) {
469	<	assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
470	<	}
471	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
472	<	} catch (InterruptedException e) {
473	<	unexpectedException();
474	<	}
465	>	public void testTimedPoll() throws InterruptedException {
466	>	ArrayBlockingQueue q = populatedQueue(SIZE);
467	>	for (int i = 0; i < SIZE; ++i) {
468	>	long startTime = System.nanoTime();
469	>	assertEquals(i, q.poll(LONG_DELAY_MS, MILLISECONDS));
470	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
471	>	}
472	>	long startTime = System.nanoTime();
473	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
474	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
475	>	checkEmpty(q);
476		}
477
478		/**
479		* Interrupted timed poll throws InterruptedException instead of
480		* returning timeout status
481		*/
482	<	public void testInterruptedTimedPoll() {
483	<	Thread t = new Thread(new Runnable() {
484	<	public void run() {
485	<	try {
486	<	ArrayBlockingQueue q = populatedQueue(SIZE);
487	<	for (int i = 0; i < SIZE; ++i) {
488	<	threadAssertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
489	<	}
527	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
528	<	} catch (InterruptedException success) {
529	<	}
530	<	}});
531	<	try {
532	<	t.start();
533	<	Thread.sleep(SHORT_DELAY_MS);
534	<	t.interrupt();
535	<	t.join();
536	<	}
537	<	catch (InterruptedException ie) {
538	<	unexpectedException();
539	<	}
540	<	}
541	<
542	<	/**
543	<	*  timed poll before a delayed offer fails; after offer succeeds;
544	<	*  on interruption throws
545	<	*/
546	<	public void testTimedPollWithOffer() {
547	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
548	<	Thread t = new Thread(new Runnable() {
549	<	public void run() {
550	<	try {
551	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
552	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
553	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
554	<	threadShouldThrow();
555	<	} catch (InterruptedException success) { }
482	>	public void testInterruptedTimedPoll() throws InterruptedException {
483	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
484	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
485	>	Thread t = newStartedThread(new CheckedRunnable() {
486	>	public void realRun() throws InterruptedException {
487	>	long startTime = System.nanoTime();
488	>	for (int i = 0; i < SIZE; ++i) {
489	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
490		}
491	<	});
492	<	try {
493	<	t.start();
494	<	Thread.sleep(SMALL_DELAY_MS);
495	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
496	<	t.interrupt();
497	<	t.join();
498	<	} catch (Exception e) {
499	<	unexpectedException();
500	<	}
491	>	aboutToWait.countDown();
492	>	try {
493	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
494	>	shouldThrow();
495	>	} catch (InterruptedException success) {
496	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
497	>	}
498	>	}});
499	>
500	>	await(aboutToWait);
501	>	waitForThreadToEnterWaitState(t);
502	>	t.interrupt();
503	>	awaitTermination(t);
504	>	checkEmpty(q);
505		}
506
569	–
507		/**
508		* peek returns next element, or null if empty
509		*/
510		public void testPeek() {
511		ArrayBlockingQueue q = populatedQueue(SIZE);
512		for (int i = 0; i < SIZE; ++i) {
513	<	assertEquals(i, ((Integer)q.peek()).intValue());
514	<	q.poll();
513	>	assertEquals(i, q.peek());
514	>	assertEquals(i, q.poll());
515		assertTrue(q.peek() == null ||
516	<	i != ((Integer)q.peek()).intValue());
516	>	!q.peek().equals(i));
517		}
518		assertNull(q.peek());
519		}
#	Line 587 | Line 524 | public class ArrayBlockingQueueTest exte
524		public void testElement() {
525		ArrayBlockingQueue q = populatedQueue(SIZE);
526		for (int i = 0; i < SIZE; ++i) {
527	<	assertEquals(i, ((Integer)q.element()).intValue());
528	<	q.poll();
527	>	assertEquals(i, q.element());
528	>	assertEquals(i, q.poll());
529		}
530		try {
531		q.element();
532		shouldThrow();
533	<	}
597	<	catch (NoSuchElementException success) {}
533	>	} catch (NoSuchElementException success) {}
534		}
535
536		/**
#	Line 603 | Line 539 | public class ArrayBlockingQueueTest exte
539		public void testRemove() {
540		ArrayBlockingQueue q = populatedQueue(SIZE);
541		for (int i = 0; i < SIZE; ++i) {
542	<	assertEquals(i, ((Integer)q.remove()).intValue());
542	>	assertEquals(i, q.remove());
543		}
544		try {
545		q.remove();
546		shouldThrow();
547	<	} catch (NoSuchElementException success) {
612	<	}
613	<	}
614	<
615	<	/**
616	<	* remove(x) removes x and returns true if present
617	<	*/
618	<	public void testRemoveElement() {
619	<	ArrayBlockingQueue q = populatedQueue(SIZE);
620	<	for (int i = 1; i < SIZE; i+=2) {
621	<	assertTrue(q.remove(new Integer(i)));
622	<	}
623	<	for (int i = 0; i < SIZE; i+=2) {
624	<	assertTrue(q.remove(new Integer(i)));
625	<	assertFalse(q.remove(new Integer(i+1)));
626	<	}
627	<	assertTrue(q.isEmpty());
547	>	} catch (NoSuchElementException success) {}
548		}
549
550		/**
#	Line 634 | Line 554 | public class ArrayBlockingQueueTest exte
554		ArrayBlockingQueue q = populatedQueue(SIZE);
555		for (int i = 0; i < SIZE; ++i) {
556		assertTrue(q.contains(new Integer(i)));
557	<	q.poll();
557	>	assertEquals(i, q.poll());
558		assertFalse(q.contains(new Integer(i)));
559		}
560		}
#	Line 683 | Line 603 | public class ArrayBlockingQueueTest exte
603		assertTrue(changed);
604
605		assertTrue(q.containsAll(p));
606	<	assertEquals(SIZE-i, q.size());
606	>	assertEquals(SIZE - i, q.size());
607		p.remove();
608		}
609		}
#	Line 696 | Line 616 | public class ArrayBlockingQueueTest exte
616		ArrayBlockingQueue q = populatedQueue(SIZE);
617		ArrayBlockingQueue p = populatedQueue(i);
618		assertTrue(q.removeAll(p));
619	<	assertEquals(SIZE-i, q.size());
619	>	assertEquals(SIZE - i, q.size());
620		for (int j = 0; j < i; ++j) {
621	<	Integer I = (Integer)(p.remove());
622	<	assertFalse(q.contains(I));
621	>	Integer x = (Integer)(p.remove());
622	>	assertFalse(q.contains(x));
623		}
624		}
625		}
626
627	<	/**
628	<	*  toArray contains all elements
629	<	*/
630	<	public void testToArray() {
631	<	ArrayBlockingQueue q = populatedQueue(SIZE);
632	<	Object[] o = q.toArray();
633	<	try {
634	<	for (int i = 0; i < o.length; i++)
635	<	assertEquals(o[i], q.take());
636	<	} catch (InterruptedException e) {
637	<	unexpectedException();
627	>	void checkToArray(ArrayBlockingQueue<Integer> q) {
628	>	int size = q.size();
629	>	Object[] a1 = q.toArray();
630	>	assertEquals(size, a1.length);
631	>	Integer[] a2 = q.toArray(new Integer[0]);
632	>	assertEquals(size, a2.length);
633	>	Integer[] a3 = q.toArray(new Integer[Math.max(0, size - 1)]);
634	>	assertEquals(size, a3.length);
635	>	Integer[] a4 = new Integer[size];
636	>	assertSame(a4, q.toArray(a4));
637	>	Integer[] a5 = new Integer[size + 1];
638	>	Arrays.fill(a5, 42);
639	>	assertSame(a5, q.toArray(a5));
640	>	Integer[] a6 = new Integer[size + 2];
641	>	Arrays.fill(a6, 42);
642	>	assertSame(a6, q.toArray(a6));
643	>	Object[][] as = { a1, a2, a3, a4, a5, a6 };
644	>	for (Object[] a : as) {
645	>	if (a.length > size) assertNull(a[size]);
646	>	if (a.length > size + 1) assertEquals(42, a[size + 1]);
647	>	}
648	>	Iterator it = q.iterator();
649	>	Integer s = q.peek();
650	>	for (int i = 0; i < size; i++) {
651	>	Integer x = (Integer) it.next();
652	>	assertEquals(s + i, (int) x);
653	>	for (Object[] a : as)
654	>	assertSame(a1[i], x);
655		}
656		}
657
658		/**
659	<	* toArray(a) contains all elements
659	>	* toArray() and toArray(a) contain all elements in FIFO order
660		*/
661	<	public void testToArray2() {
662	<	ArrayBlockingQueue q = populatedQueue(SIZE);
663	<	Integer[] ints = new Integer[SIZE];
664	<	ints = (Integer[])q.toArray(ints);
665	<	try {
666	<	for (int i = 0; i < ints.length; i++)
667	<	assertEquals(ints[i], q.take());
668	<	} catch (InterruptedException e) {
669	<	unexpectedException();
661	>	public void testToArray() {
662	>	final ThreadLocalRandom rnd = ThreadLocalRandom.current();
663	>	final int size = rnd.nextInt(6);
664	>	final int capacity = Math.max(1, size + rnd.nextInt(size + 1));
665	>	ArrayBlockingQueue<Integer> q = new ArrayBlockingQueue<>(capacity);
666	>	for (int i = 0; i < size; i++) {
667	>	checkToArray(q);
668	>	q.add(i);
669	>	}
670	>	// Provoke wraparound
671	>	int added = size * 2;
672	>	for (int i = 0; i < added; i++) {
673	>	checkToArray(q);
674	>	assertEquals((Integer) i, q.poll());
675	>	q.add(size + i);
676	>	}
677	>	for (int i = 0; i < size; i++) {
678	>	checkToArray(q);
679	>	assertEquals((Integer) (added + i), q.poll());
680		}
681		}
682
683		/**
684	<	* toArray(null) throws NPE
684	>	* toArray(incompatible array type) throws ArrayStoreException
685		*/
686	<	public void testToArray_BadArg() {
686	>	public void testToArray_incompatibleArrayType() {
687	>	ArrayBlockingQueue q = populatedQueue(SIZE);
688		try {
689	<	ArrayBlockingQueue q = populatedQueue(SIZE);
742	<	Object o[] = q.toArray(null);
689	>	q.toArray(new String[10]);
690		shouldThrow();
691	<	} catch (NullPointerException success) {}
745	<	}
746	<
747	<	/**
748	<	* toArray with incompatible array type throws CCE
749	<	*/
750	<	public void testToArray1_BadArg() {
691	>	} catch (ArrayStoreException success) {}
692		try {
693	<	ArrayBlockingQueue q = populatedQueue(SIZE);
753	<	Object o[] = q.toArray(new String[10] );
693	>	q.toArray(new String[0]);
694		shouldThrow();
695	<	} catch (ArrayStoreException  success) {}
695	>	} catch (ArrayStoreException success) {}
696		}
697
758	–
698		/**
699		* iterator iterates through all elements
700		*/
701	<	public void testIterator() {
701	>	public void testIterator() throws InterruptedException {
702		ArrayBlockingQueue q = populatedQueue(SIZE);
703		Iterator it = q.iterator();
704	<	try {
705	<	while (it.hasNext()) {
706	<	assertEquals(it.next(), q.take());
707	<	}
708	<	} catch (InterruptedException e) {
709	<	unexpectedException();
710	<	}
704	>	int i;
705	>	for (i = 0; it.hasNext(); i++)
706	>	assertTrue(q.contains(it.next()));
707	>	assertEquals(i, SIZE);
708	>	assertIteratorExhausted(it);
709	>
710	>	it = q.iterator();
711	>	for (i = 0; it.hasNext(); i++)
712	>	assertEquals(it.next(), q.take());
713	>	assertEquals(i, SIZE);
714	>	assertIteratorExhausted(it);
715	>	}
716	>
717	>	/**
718	>	* iterator of empty collection has no elements
719	>	*/
720	>	public void testEmptyIterator() {
721	>	assertIteratorExhausted(new ArrayBlockingQueue(SIZE).iterator());
722		}
723
724		/**
725		* iterator.remove removes current element
726		*/
727	<	public void testIteratorRemove () {
727	>	public void testIteratorRemove() {
728		final ArrayBlockingQueue q = new ArrayBlockingQueue(3);
729		q.add(two);
730		q.add(one);
#	Line 785 | Line 735 | public class ArrayBlockingQueueTest exte
735		it.remove();
736
737		it = q.iterator();
738	<	assertEquals(it.next(), one);
739	<	assertEquals(it.next(), three);
738	>	assertSame(it.next(), one);
739	>	assertSame(it.next(), three);
740		assertFalse(it.hasNext());
741		}
742
#	Line 803 | Line 753 | public class ArrayBlockingQueueTest exte
753
754		int k = 0;
755		for (Iterator it = q.iterator(); it.hasNext();) {
756	<	int i = ((Integer)(it.next())).intValue();
807	<	assertEquals(++k, i);
756	>	assertEquals(++k, it.next());
757		}
758		assertEquals(3, k);
759		}
#	Line 812 | Line 761 | public class ArrayBlockingQueueTest exte
761		/**
762		* Modifications do not cause iterators to fail
763		*/
764	<	public void testWeaklyConsistentIteration () {
764	>	public void testWeaklyConsistentIteration() {
765		final ArrayBlockingQueue q = new ArrayBlockingQueue(3);
766		q.add(one);
767		q.add(two);
768		q.add(three);
769	<	try {
770	<	for (Iterator it = q.iterator(); it.hasNext();) {
771	<	q.remove();
823	<	it.next();
824	<	}
825	<	}
826	<	catch (ConcurrentModificationException e) {
827	<	unexpectedException();
769	>	for (Iterator it = q.iterator(); it.hasNext();) {
770	>	q.remove();
771	>	it.next();
772		}
773		assertEquals(0, q.size());
774		}
775
832	–
776		/**
777		* toString contains toStrings of elements
778		*/
#	Line 837 | Line 780 | public class ArrayBlockingQueueTest exte
780		ArrayBlockingQueue q = populatedQueue(SIZE);
781		String s = q.toString();
782		for (int i = 0; i < SIZE; ++i) {
783	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
783	>	assertTrue(s.contains(String.valueOf(i)));
784		}
785		}
786
844	–
787		/**
788		* offer transfers elements across Executor tasks
789		*/
#	Line 849 | Line 791 | public class ArrayBlockingQueueTest exte
791		final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
792		q.add(one);
793		q.add(two);
794	<	ExecutorService executor = Executors.newFixedThreadPool(2);
795	<	executor.execute(new Runnable() {
796	<	public void run() {
797	<	threadAssertFalse(q.offer(three));
798	<	try {
799	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
800	<	threadAssertEquals(0, q.remainingCapacity());
801	<	}
802	<	catch (InterruptedException e) {
803	<	threadUnexpectedException();
862	<	}
863	<	}
864	<	});
865	<
866	<	executor.execute(new Runnable() {
867	<	public void run() {
868	<	try {
869	<	Thread.sleep(SMALL_DELAY_MS);
870	<	threadAssertEquals(one, q.take());
871	<	}
872	<	catch (InterruptedException e) {
873	<	threadUnexpectedException();
874	<	}
875	<	}
876	<	});
877	<
878	<	joinPool(executor);
794	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
795	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
796	>	try (PoolCleaner cleaner = cleaner(executor)) {
797	>	executor.execute(new CheckedRunnable() {
798	>	public void realRun() throws InterruptedException {
799	>	assertFalse(q.offer(three));
800	>	threadsStarted.await();
801	>	assertTrue(q.offer(three, LONG_DELAY_MS, MILLISECONDS));
802	>	assertEquals(0, q.remainingCapacity());
803	>	}});
804
805	+	executor.execute(new CheckedRunnable() {
806	+	public void realRun() throws InterruptedException {
807	+	threadsStarted.await();
808	+	assertEquals(0, q.remainingCapacity());
809	+	assertSame(one, q.take());
810	+	}});
811	+	}
812		}
813
814		/**
815	<	* poll retrieves elements across Executor threads
815	>	* timed poll retrieves elements across Executor threads
816		*/
817		public void testPollInExecutor() {
818		final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
819	<	ExecutorService executor = Executors.newFixedThreadPool(2);
820	<	executor.execute(new Runnable() {
821	<	public void run() {
822	<	threadAssertNull(q.poll());
823	<	try {
824	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
825	<	threadAssertTrue(q.isEmpty());
826	<	}
827	<	catch (InterruptedException e) {
828	<	threadUnexpectedException();
897	<	}
898	<	}
899	<	});
819	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
820	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
821	>	try (PoolCleaner cleaner = cleaner(executor)) {
822	>	executor.execute(new CheckedRunnable() {
823	>	public void realRun() throws InterruptedException {
824	>	assertNull(q.poll());
825	>	threadsStarted.await();
826	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
827	>	checkEmpty(q);
828	>	}});
829
830	<	executor.execute(new Runnable() {
831	<	public void run() {
832	<	try {
904	<	Thread.sleep(SMALL_DELAY_MS);
830	>	executor.execute(new CheckedRunnable() {
831	>	public void realRun() throws InterruptedException {
832	>	threadsStarted.await();
833		q.put(one);
834	<	}
907	<	catch (InterruptedException e) {
908	<	threadUnexpectedException();
909	<	}
910	<	}
911	<	});
912	<
913	<	joinPool(executor);
914	<	}
915	<
916	<	/**
917	<	* A deserialized serialized queue has same elements in same order
918	<	*/
919	<	public void testSerialization() {
920	<	ArrayBlockingQueue q = populatedQueue(SIZE);
921	<
922	<	try {
923	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
924	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
925	<	out.writeObject(q);
926	<	out.close();
927	<
928	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
929	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
930	<	ArrayBlockingQueue r = (ArrayBlockingQueue)in.readObject();
931	<	assertEquals(q.size(), r.size());
932	<	while (!q.isEmpty())
933	<	assertEquals(q.remove(), r.remove());
934	<	} catch (Exception e) {
935	<	unexpectedException();
936	<	}
937	<	}
938	<
939	<	/**
940	<	* drainTo(null) throws NPE
941	<	*/
942	<	public void testDrainToNull() {
943	<	ArrayBlockingQueue q = populatedQueue(SIZE);
944	<	try {
945	<	q.drainTo(null);
946	<	shouldThrow();
947	<	} catch (NullPointerException success) {
834	>	}});
835		}
836		}
837
838		/**
839	<	* drainTo(this) throws IAE
839	>	* A deserialized serialized queue has same elements in same order
840		*/
841	<	public void testDrainToSelf() {
842	<	ArrayBlockingQueue q = populatedQueue(SIZE);
843	<	try {
844	<	q.drainTo(q);
845	<	shouldThrow();
846	<	} catch (IllegalArgumentException success) {
841	>	public void testSerialization() throws Exception {
842	>	Queue x = populatedQueue(SIZE);
843	>	Queue y = serialClone(x);
844	>
845	>	assertNotSame(x, y);
846	>	assertEquals(x.size(), y.size());
847	>	assertEquals(x.toString(), y.toString());
848	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
849	>	while (!x.isEmpty()) {
850	>	assertFalse(y.isEmpty());
851	>	assertEquals(x.remove(), y.remove());
852		}
853	+	assertTrue(y.isEmpty());
854		}
855
856		/**
#	Line 967 | Line 860 | public class ArrayBlockingQueueTest exte
860		ArrayBlockingQueue q = populatedQueue(SIZE);
861		ArrayList l = new ArrayList();
862		q.drainTo(l);
863	<	assertEquals(q.size(), 0);
864	<	assertEquals(l.size(), SIZE);
863	>	assertEquals(0, q.size());
864	>	assertEquals(SIZE, l.size());
865		for (int i = 0; i < SIZE; ++i)
866		assertEquals(l.get(i), new Integer(i));
867		q.add(zero);
#	Line 978 | Line 871 | public class ArrayBlockingQueueTest exte
871		assertTrue(q.contains(one));
872		l.clear();
873		q.drainTo(l);
874	<	assertEquals(q.size(), 0);
875	<	assertEquals(l.size(), 2);
874	>	assertEquals(0, q.size());
875	>	assertEquals(2, l.size());
876		for (int i = 0; i < 2; ++i)
877		assertEquals(l.get(i), new Integer(i));
878		}
#	Line 987 | Line 880 | public class ArrayBlockingQueueTest exte
880		/**
881		* drainTo empties full queue, unblocking a waiting put.
882		*/
883	<	public void testDrainToWithActivePut() {
883	>	public void testDrainToWithActivePut() throws InterruptedException {
884		final ArrayBlockingQueue q = populatedQueue(SIZE);
885	<	Thread t = new Thread(new Runnable() {
886	<	public void run() {
887	<	try {
888	<	q.put(new Integer(SIZE+1));
996	<	} catch (InterruptedException ie) {
997	<	threadUnexpectedException();
998	<	}
999	<	}
1000	<	});
1001	<	try {
1002	<	t.start();
1003	<	ArrayList l = new ArrayList();
1004	<	q.drainTo(l);
1005	<	assertTrue(l.size() >= SIZE);
1006	<	for (int i = 0; i < SIZE; ++i)
1007	<	assertEquals(l.get(i), new Integer(i));
1008	<	t.join();
1009	<	assertTrue(q.size() + l.size() >= SIZE);
1010	<	} catch (Exception e) {
1011	<	unexpectedException();
1012	<	}
1013	<	}
885	>	Thread t = new Thread(new CheckedRunnable() {
886	>	public void realRun() throws InterruptedException {
887	>	q.put(new Integer(SIZE + 1));
888	>	}});
889
890	<	/**
891	<	* drainTo(null, n) throws NPE
892	<	*/
893	<	public void testDrainToNullN() {
894	<	ArrayBlockingQueue q = populatedQueue(SIZE);
895	<	try {
896	<	q.drainTo(null, 0);
897	<	shouldThrow();
1023	<	} catch (NullPointerException success) {
1024	<	}
1025	<	}
1026	<
1027	<	/**
1028	<	* drainTo(this, n) throws IAE
1029	<	*/
1030	<	public void testDrainToSelfN() {
1031	<	ArrayBlockingQueue q = populatedQueue(SIZE);
1032	<	try {
1033	<	q.drainTo(q, 0);
1034	<	shouldThrow();
1035	<	} catch (IllegalArgumentException success) {
1036	<	}
890	>	t.start();
891	>	ArrayList l = new ArrayList();
892	>	q.drainTo(l);
893	>	assertTrue(l.size() >= SIZE);
894	>	for (int i = 0; i < SIZE; ++i)
895	>	assertEquals(l.get(i), new Integer(i));
896	>	t.join();
897	>	assertTrue(q.size() + l.size() >= SIZE);
898		}
899
900		/**
901	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
901	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
902		*/
903		public void testDrainToN() {
904	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE*2);
904	>	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE * 2);
905		for (int i = 0; i < SIZE + 2; ++i) {
906		for (int j = 0; j < SIZE; j++)
907		assertTrue(q.offer(new Integer(j)));
908		ArrayList l = new ArrayList();
909		q.drainTo(l, i);
910	<	int k = (i < SIZE)? i : SIZE;
911	<	assertEquals(l.size(), k);
912	<	assertEquals(q.size(), SIZE-k);
910	>	int k = (i < SIZE) ? i : SIZE;
911	>	assertEquals(k, l.size());
912	>	assertEquals(SIZE - k, q.size());
913		for (int j = 0; j < k; ++j)
914		assertEquals(l.get(j), new Integer(j));
915	<	while (q.poll() != null) ;
915	>	do {} while (q.poll() != null);
916		}
917		}
918
919	+	/**
920	+	* remove(null), contains(null) always return false
921	+	*/
922	+	public void testNeverContainsNull() {
923	+	Collection<?>[] qs = {
924	+	new ArrayBlockingQueue<Object>(10),
925	+	populatedQueue(2),
926	+	};
927
928	+	for (Collection<?> q : qs) {
929	+	assertFalse(q.contains(null));
930	+	assertFalse(q.remove(null));
931	+	}
932	+	}
933		}

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