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root/jsr166/jsr166/src/test/tck/LinkedBlockingDequeTest.java

Comparing jsr166/src/test/tck/LinkedBlockingDequeTest.java (file contents):
Revision 1.37 by dl, Fri May 6 11:22:07 2011 UTC vs.
Revision 1.89 by jsr166, Wed Jan 27 01:57:24 2021 UTC

#	Line 4 | Line 4
4		* http://creativecommons.org/publicdomain/zero/1.0/
5		*/
6
7	–	import junit.framework.*;
8	–	import java.util.*;
9	–	import java.util.concurrent.*;
7		import static java.util.concurrent.TimeUnit.MILLISECONDS;
8	<	import java.io.*;
8	>
9	>	import java.util.ArrayList;
10	>	import java.util.Arrays;
11	>	import java.util.Collection;
12	>	import java.util.Deque;
13	>	import java.util.Iterator;
14	>	import java.util.NoSuchElementException;
15	>	import java.util.Queue;
16	>	import java.util.concurrent.BlockingDeque;
17	>	import java.util.concurrent.BlockingQueue;
18	>	import java.util.concurrent.CountDownLatch;
19	>	import java.util.concurrent.Executors;
20	>	import java.util.concurrent.ExecutorService;
21	>	import java.util.concurrent.LinkedBlockingDeque;
22	>
23	>	import junit.framework.Test;
24
25		public class LinkedBlockingDequeTest extends JSR166TestCase {
26
#	Line 20 | Line 32 | public class LinkedBlockingDequeTest ext
32
33		public static class Bounded extends BlockingQueueTest {
34		protected BlockingQueue emptyCollection() {
35	<	return new LinkedBlockingDeque(20);
35	>	return new LinkedBlockingDeque(SIZE);
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	+	class Implementation implements CollectionImplementation {
45	+	public Class<?> klazz() { return LinkedBlockingDeque.class; }
46	+	public Collection emptyCollection() { return new LinkedBlockingDeque(); }
47	+	public Object makeElement(int i) { return JSR166TestCase.itemFor(i); }
48	+	public boolean isConcurrent() { return true; }
49	+	public boolean permitsNulls() { return false; }
50	+	}
51		return newTestSuite(LinkedBlockingDequeTest.class,
52		new Unbounded().testSuite(),
53	<	new Bounded().testSuite());
53	>	new Bounded().testSuite(),
54	>	CollectionTest.testSuite(new Implementation()));
55		}
56
57		/**
58	<	* Create a deque of given size containing consecutive
59	<	* Integers 0 ... n.
58	>	* Returns a new deque of given size containing consecutive
59	>	* Items 0 ... n - 1.
60		*/
61	<	private LinkedBlockingDeque<Integer> populatedDeque(int n) {
62	<	LinkedBlockingDeque<Integer> q =
43	<	new LinkedBlockingDeque<Integer>(n);
61	>	private static LinkedBlockingDeque<Item> populatedDeque(int n) {
62	>	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(n);
63		assertTrue(q.isEmpty());
64		for (int i = 0; i < n; i++)
65	<	assertTrue(q.offer(new Integer(i)));
65	>	mustOffer(q, i);
66		assertFalse(q.isEmpty());
67	<	assertEquals(0, q.remainingCapacity());
68	<	assertEquals(n, q.size());
67	>	mustEqual(0, q.remainingCapacity());
68	>	mustEqual(n, q.size());
69	>	mustEqual(0, q.peekFirst());
70	>	mustEqual((n - 1), q.peekLast());
71		return q;
72		}
73
#	Line 54 | Line 75 | public class LinkedBlockingDequeTest ext
75		* isEmpty is true before add, false after
76		*/
77		public void testEmpty() {
78	<	LinkedBlockingDeque q = new LinkedBlockingDeque();
78	>	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>();
79		assertTrue(q.isEmpty());
80	<	q.add(new Integer(1));
80	>	q.add(one);
81		assertFalse(q.isEmpty());
82	<	q.add(new Integer(2));
82	>	q.add(two);
83		q.removeFirst();
84		q.removeFirst();
85		assertTrue(q.isEmpty());
#	Line 68 | Line 89 | public class LinkedBlockingDequeTest ext
89		* size changes when elements added and removed
90		*/
91		public void testSize() {
92	<	LinkedBlockingDeque q = populatedDeque(SIZE);
92	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
93		for (int i = 0; i < SIZE; ++i) {
94	<	assertEquals(SIZE-i, q.size());
94	>	mustEqual(SIZE - i, q.size());
95		q.removeFirst();
96		}
97		for (int i = 0; i < SIZE; ++i) {
98	<	assertEquals(i, q.size());
99	<	q.add(new Integer(i));
98	>	mustEqual(i, q.size());
99	>	mustAdd(q, one);
100		}
101		}
102
103		/**
104	<	* offer(null) throws NPE
104	>	* offerFirst(null) throws NullPointerException
105		*/
106		public void testOfferFirstNull() {
107	+	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>();
108		try {
87	–	LinkedBlockingDeque q = new LinkedBlockingDeque();
109		q.offerFirst(null);
110		shouldThrow();
111		} catch (NullPointerException success) {}
112		}
113
114		/**
115	+	* offerLast(null) throws NullPointerException
116	+	*/
117	+	public void testOfferLastNull() {
118	+	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>();
119	+	try {
120	+	q.offerLast(null);
121	+	shouldThrow();
122	+	} catch (NullPointerException success) {}
123	+	}
124	+
125	+	/**
126		* OfferFirst succeeds
127		*/
128		public void testOfferFirst() {
129	<	LinkedBlockingDeque q = new LinkedBlockingDeque();
130	<	assertTrue(q.offerFirst(new Integer(0)));
131	<	assertTrue(q.offerFirst(new Integer(1)));
129	>	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>();
130	>	assertTrue(q.offerFirst(zero));
131	>	assertTrue(q.offerFirst(two));
132		}
133
134		/**
135		* OfferLast succeeds
136		*/
137		public void testOfferLast() {
138	<	LinkedBlockingDeque q = new LinkedBlockingDeque();
139	<	assertTrue(q.offerLast(new Integer(0)));
140	<	assertTrue(q.offerLast(new Integer(1)));
138	>	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>();
139	>	assertTrue(q.offerLast(zero));
140	>	assertTrue(q.offerLast(one));
141		}
142
143		/**
144		* pollFirst succeeds unless empty
145		*/
146		public void testPollFirst() {
147	<	LinkedBlockingDeque q = populatedDeque(SIZE);
147	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
148		for (int i = 0; i < SIZE; ++i) {
149	<	assertEquals(i, q.pollFirst());
149	>	mustEqual(i, q.pollFirst());
150		}
151		assertNull(q.pollFirst());
152		}
#	Line 123 | Line 155 | public class LinkedBlockingDequeTest ext
155		* pollLast succeeds unless empty
156		*/
157		public void testPollLast() {
158	<	LinkedBlockingDeque q = populatedDeque(SIZE);
159	<	for (int i = SIZE-1; i >= 0; --i) {
160	<	assertEquals(i, q.pollLast());
158	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
159	>	for (int i = SIZE - 1; i >= 0; --i) {
160	>	mustEqual(i, q.pollLast());
161		}
162		assertNull(q.pollLast());
163		}
#	Line 134 | Line 166 | public class LinkedBlockingDequeTest ext
166		* peekFirst returns next element, or null if empty
167		*/
168		public void testPeekFirst() {
169	<	LinkedBlockingDeque q = populatedDeque(SIZE);
169	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
170		for (int i = 0; i < SIZE; ++i) {
171	<	assertEquals(i, q.peekFirst());
172	<	assertEquals(i, q.pollFirst());
171	>	mustEqual(i, q.peekFirst());
172	>	mustEqual(i, q.pollFirst());
173		assertTrue(q.peekFirst() == null ||
174		!q.peekFirst().equals(i));
175		}
#	Line 148 | Line 180 | public class LinkedBlockingDequeTest ext
180		* peek returns next element, or null if empty
181		*/
182		public void testPeek() {
183	<	LinkedBlockingDeque q = populatedDeque(SIZE);
183	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
184		for (int i = 0; i < SIZE; ++i) {
185	<	assertEquals(i, q.peek());
186	<	assertEquals(i, q.pollFirst());
185	>	mustEqual(i, q.peek());
186	>	mustEqual(i, q.pollFirst());
187		assertTrue(q.peek() == null ||
188		!q.peek().equals(i));
189		}
#	Line 162 | Line 194 | public class LinkedBlockingDequeTest ext
194		* peekLast returns next element, or null if empty
195		*/
196		public void testPeekLast() {
197	<	LinkedBlockingDeque q = populatedDeque(SIZE);
198	<	for (int i = SIZE-1; i >= 0; --i) {
199	<	assertEquals(i, q.peekLast());
200	<	assertEquals(i, q.pollLast());
197	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
198	>	for (int i = SIZE - 1; i >= 0; --i) {
199	>	mustEqual(i, q.peekLast());
200	>	mustEqual(i, q.pollLast());
201		assertTrue(q.peekLast() == null ||
202		!q.peekLast().equals(i));
203		}
#	Line 176 | Line 208 | public class LinkedBlockingDequeTest ext
208		* getFirst() returns first element, or throws NSEE if empty
209		*/
210		public void testFirstElement() {
211	<	LinkedBlockingDeque q = populatedDeque(SIZE);
211	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
212		for (int i = 0; i < SIZE; ++i) {
213	<	assertEquals(i, q.getFirst());
214	<	assertEquals(i, q.pollFirst());
213	>	mustEqual(i, q.getFirst());
214	>	mustEqual(i, q.pollFirst());
215		}
216		try {
217		q.getFirst();
#	Line 192 | Line 224 | public class LinkedBlockingDequeTest ext
224		* getLast() returns last element, or throws NSEE if empty
225		*/
226		public void testLastElement() {
227	<	LinkedBlockingDeque q = populatedDeque(SIZE);
228	<	for (int i = SIZE-1; i >= 0; --i) {
229	<	assertEquals(i, q.getLast());
230	<	assertEquals(i, q.pollLast());
227	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
228	>	for (int i = SIZE - 1; i >= 0; --i) {
229	>	mustEqual(i, q.getLast());
230	>	mustEqual(i, q.pollLast());
231		}
232		try {
233		q.getLast();
#	Line 208 | Line 240 | public class LinkedBlockingDequeTest ext
240		* removeFirst() removes first element, or throws NSEE if empty
241		*/
242		public void testRemoveFirst() {
243	<	LinkedBlockingDeque q = populatedDeque(SIZE);
243	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
244		for (int i = 0; i < SIZE; ++i) {
245	<	assertEquals(i, q.removeFirst());
245	>	mustEqual(i, q.removeFirst());
246		}
247		try {
248		q.removeFirst();
#	Line 223 | Line 255 | public class LinkedBlockingDequeTest ext
255		* removeLast() removes last element, or throws NSEE if empty
256		*/
257		public void testRemoveLast() {
258	<	LinkedBlockingDeque q = populatedDeque(SIZE);
258	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
259		for (int i = SIZE - 1; i >= 0; --i) {
260	<	assertEquals(i, q.removeLast());
260	>	mustEqual(i, q.removeLast());
261		}
262		try {
263		q.removeLast();
#	Line 238 | Line 270 | public class LinkedBlockingDequeTest ext
270		* remove removes next element, or throws NSEE if empty
271		*/
272		public void testRemove() {
273	<	LinkedBlockingDeque q = populatedDeque(SIZE);
273	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
274		for (int i = 0; i < SIZE; ++i) {
275	<	assertEquals(i, q.remove());
275	>	mustEqual(i, q.remove());
276		}
277		try {
278		q.remove();
#	Line 252 | Line 284 | public class LinkedBlockingDequeTest ext
284		* removeFirstOccurrence(x) removes x and returns true if present
285		*/
286		public void testRemoveFirstOccurrence() {
287	<	LinkedBlockingDeque q = populatedDeque(SIZE);
288	<	for (int i = 1; i < SIZE; i+=2) {
289	<	assertTrue(q.removeFirstOccurrence(new Integer(i)));
290	<	}
291	<	for (int i = 0; i < SIZE; i+=2) {
292	<	assertTrue(q.removeFirstOccurrence(new Integer(i)));
293	<	assertFalse(q.removeFirstOccurrence(new Integer(i+1)));
287	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
288	>	for (int i = 1; i < SIZE; i += 2) {
289	>	assertTrue(q.removeFirstOccurrence(itemFor(i)));
290	>	}
291	>	for (int i = 0; i < SIZE; i += 2) {
292	>	assertTrue(q.removeFirstOccurrence(itemFor(i)));
293	>	assertFalse(q.removeFirstOccurrence(itemFor(i + 1)));
294		}
295		assertTrue(q.isEmpty());
296		}
#	Line 267 | Line 299 | public class LinkedBlockingDequeTest ext
299		* removeLastOccurrence(x) removes x and returns true if present
300		*/
301		public void testRemoveLastOccurrence() {
302	<	LinkedBlockingDeque q = populatedDeque(SIZE);
303	<	for (int i = 1; i < SIZE; i+=2) {
304	<	assertTrue(q.removeLastOccurrence(new Integer(i)));
305	<	}
306	<	for (int i = 0; i < SIZE; i+=2) {
307	<	assertTrue(q.removeLastOccurrence(new Integer(i)));
308	<	assertFalse(q.removeLastOccurrence(new Integer(i+1)));
302	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
303	>	for (int i = 1; i < SIZE; i += 2) {
304	>	assertTrue(q.removeLastOccurrence(itemFor(i)));
305	>	}
306	>	for (int i = 0; i < SIZE; i += 2) {
307	>	assertTrue(q.removeLastOccurrence(itemFor(i)));
308	>	assertFalse(q.removeLastOccurrence(itemFor(i + 1)));
309		}
310		assertTrue(q.isEmpty());
311		}
#	Line 282 | Line 314 | public class LinkedBlockingDequeTest ext
314		* peekFirst returns element inserted with addFirst
315		*/
316		public void testAddFirst() {
317	<	LinkedBlockingDeque q = populatedDeque(3);
317	>	LinkedBlockingDeque<Item> q = populatedDeque(3);
318		q.pollLast();
319		q.addFirst(four);
320		assertSame(four, q.peekFirst());
#	Line 292 | Line 324 | public class LinkedBlockingDequeTest ext
324		* peekLast returns element inserted with addLast
325		*/
326		public void testAddLast() {
327	<	LinkedBlockingDeque q = populatedDeque(3);
327	>	LinkedBlockingDeque<Item> q = populatedDeque(3);
328		q.pollLast();
329		q.addLast(four);
330		assertSame(four, q.peekLast());
331		}
332
301	–
333		/**
334		* A new deque has the indicated capacity, or Integer.MAX_VALUE if
335		* none given
336		*/
337		public void testConstructor1() {
338	<	assertEquals(SIZE, new LinkedBlockingDeque(SIZE).remainingCapacity());
339	<	assertEquals(Integer.MAX_VALUE, new LinkedBlockingDeque().remainingCapacity());
338	>	mustEqual(SIZE, new LinkedBlockingDeque<Item>(SIZE).remainingCapacity());
339	>	mustEqual(Integer.MAX_VALUE, new LinkedBlockingDeque<Item>().remainingCapacity());
340		}
341
342		/**
343	<	* Constructor throws IAE if capacity argument nonpositive
343	>	* Constructor throws IllegalArgumentException if capacity argument nonpositive
344		*/
345		public void testConstructor2() {
346		try {
347	<	LinkedBlockingDeque q = new LinkedBlockingDeque(0);
347	>	new LinkedBlockingDeque<Item>(0);
348		shouldThrow();
349		} catch (IllegalArgumentException success) {}
350		}
351
352		/**
353	<	* Initializing from null Collection throws NPE
353	>	* Initializing from null Collection throws NullPointerException
354		*/
355		public void testConstructor3() {
356		try {
357	<	LinkedBlockingDeque q = new LinkedBlockingDeque(null);
357	>	new LinkedBlockingDeque<Item>(null);
358		shouldThrow();
359		} catch (NullPointerException success) {}
360		}
361
362		/**
363	<	* Initializing from Collection of null elements throws NPE
363	>	* Initializing from Collection of null elements throws NullPointerException
364		*/
365		public void testConstructor4() {
366	+	Collection<Item> elements = Arrays.asList(new Item[SIZE]);
367		try {
368	<	Integer[] ints = new Integer[SIZE];
337	<	LinkedBlockingDeque q = new LinkedBlockingDeque(Arrays.asList(ints));
368	>	new LinkedBlockingDeque<Item>(elements);
369		shouldThrow();
370		} catch (NullPointerException success) {}
371		}
372
373		/**
374	<	* Initializing from Collection with some null elements throws NPE
374	>	* Initializing from Collection with some null elements throws
375	>	* NullPointerException
376		*/
377		public void testConstructor5() {
378	+	Item[] items = new Item[2];
379	+	items[0] = zero;
380	+	Collection<Item> elements = Arrays.asList(items);
381		try {
382	<	Integer[] ints = new Integer[SIZE];
348	<	for (int i = 0; i < SIZE-1; ++i)
349	<	ints[i] = new Integer(i);
350	<	LinkedBlockingDeque q = new LinkedBlockingDeque(Arrays.asList(ints));
382	>	new LinkedBlockingDeque<Item>(elements);
383		shouldThrow();
384		} catch (NullPointerException success) {}
385		}
#	Line 356 | Line 388 | public class LinkedBlockingDequeTest ext
388		* Deque contains all elements of collection used to initialize
389		*/
390		public void testConstructor6() {
391	<	Integer[] ints = new Integer[SIZE];
392	<	for (int i = 0; i < SIZE; ++i)
361	<	ints[i] = new Integer(i);
362	<	LinkedBlockingDeque q = new LinkedBlockingDeque(Arrays.asList(ints));
391	>	Item[] items = defaultItems;
392	>	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(Arrays.asList(items));
393		for (int i = 0; i < SIZE; ++i)
394	<	assertEquals(ints[i], q.poll());
394	>	mustEqual(items[i], q.poll());
395		}
396
397		/**
398		* Deque transitions from empty to full when elements added
399		*/
400		public void testEmptyFull() {
401	<	LinkedBlockingDeque q = new LinkedBlockingDeque(2);
401	>	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(2);
402		assertTrue(q.isEmpty());
403	<	assertEquals("should have room for 2", 2, q.remainingCapacity());
403	>	mustEqual(2, q.remainingCapacity());
404		q.add(one);
405		assertFalse(q.isEmpty());
406		q.add(two);
407		assertFalse(q.isEmpty());
408	<	assertEquals(0, q.remainingCapacity());
408	>	mustEqual(0, q.remainingCapacity());
409		assertFalse(q.offer(three));
410		}
411
#	Line 383 | Line 413 | public class LinkedBlockingDequeTest ext
413		* remainingCapacity decreases on add, increases on remove
414		*/
415		public void testRemainingCapacity() {
416	<	LinkedBlockingDeque q = populatedDeque(SIZE);
416	>	BlockingQueue<Item> q = populatedDeque(SIZE);
417		for (int i = 0; i < SIZE; ++i) {
418	<	assertEquals(i, q.remainingCapacity());
419	<	assertEquals(SIZE-i, q.size());
420	<	q.remove();
418	>	mustEqual(i, q.remainingCapacity());
419	>	mustEqual(SIZE, q.size() + q.remainingCapacity());
420	>	mustEqual(i, q.remove());
421		}
422		for (int i = 0; i < SIZE; ++i) {
423	<	assertEquals(SIZE-i, q.remainingCapacity());
424	<	assertEquals(i, q.size());
425	<	q.add(new Integer(i));
423	>	mustEqual(SIZE - i, q.remainingCapacity());
424	>	mustEqual(SIZE, q.size() + q.remainingCapacity());
425	>	mustAdd(q, i);
426		}
427		}
428
429		/**
400	–	* offer(null) throws NPE
401	–	*/
402	–	public void testOfferNull() {
403	–	try {
404	–	LinkedBlockingDeque q = new LinkedBlockingDeque(1);
405	–	q.offer(null);
406	–	shouldThrow();
407	–	} catch (NullPointerException success) {}
408	–	}
409	–
410	–	/**
411	–	* add(null) throws NPE
412	–	*/
413	–	public void testAddNull() {
414	–	try {
415	–	LinkedBlockingDeque q = new LinkedBlockingDeque(1);
416	–	q.add(null);
417	–	shouldThrow();
418	–	} catch (NullPointerException success) {}
419	–	}
420	–
421	–	/**
430		* push(null) throws NPE
431		*/
432		public void testPushNull() {
433	+	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(1);
434		try {
426	–	LinkedBlockingDeque q = new LinkedBlockingDeque(1);
435		q.push(null);
436		shouldThrow();
437		} catch (NullPointerException success) {}
438		}
439
440		/**
441	<	* push succeeds if not full; throws ISE if full
441	>	* push succeeds if not full; throws IllegalStateException if full
442		*/
443		public void testPush() {
444	+	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(SIZE);
445	+	for (int i = 0; i < SIZE; ++i) {
446	+	Item x = itemFor(i);
447	+	q.push(x);
448	+	mustEqual(x, q.peek());
449	+	}
450	+	mustEqual(0, q.remainingCapacity());
451		try {
452	<	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
438	<	for (int i = 0; i < SIZE; ++i) {
439	<	Integer I = new Integer(i);
440	<	q.push(I);
441	<	assertEquals(I, q.peek());
442	<	}
443	<	assertEquals(0, q.remainingCapacity());
444	<	q.push(new Integer(SIZE));
452	>	q.push(itemFor(SIZE));
453		shouldThrow();
454		} catch (IllegalStateException success) {}
455		}
#	Line 450 | Line 458 | public class LinkedBlockingDequeTest ext
458		* peekFirst returns element inserted with push
459		*/
460		public void testPushWithPeek() {
461	<	LinkedBlockingDeque q = populatedDeque(3);
461	>	LinkedBlockingDeque<Item> q = populatedDeque(3);
462		q.pollLast();
463		q.push(four);
464		assertSame(four, q.peekFirst());
465		}
466
459	–
467		/**
468		* pop removes next element, or throws NSEE if empty
469		*/
470		public void testPop() {
471	<	LinkedBlockingDeque q = populatedDeque(SIZE);
471	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
472		for (int i = 0; i < SIZE; ++i) {
473	<	assertEquals(i, q.pop());
473	>	mustEqual(i, q.pop());
474		}
475		try {
476		q.pop();
#	Line 471 | Line 478 | public class LinkedBlockingDequeTest ext
478		} catch (NoSuchElementException success) {}
479		}
480
474	–
481		/**
482		* Offer succeeds if not full; fails if full
483		*/
484		public void testOffer() {
485	<	LinkedBlockingDeque q = new LinkedBlockingDeque(1);
485	>	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(1);
486		assertTrue(q.offer(zero));
487		assertFalse(q.offer(one));
488		}
489
490		/**
491	<	* add succeeds if not full; throws ISE if full
491	>	* add succeeds if not full; throws IllegalStateException if full
492		*/
493		public void testAdd() {
494	+	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(SIZE);
495	+	for (int i = 0; i < SIZE; ++i)
496	+	mustAdd(q, i);
497	+	mustEqual(0, q.remainingCapacity());
498		try {
499	<	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
490	<	for (int i = 0; i < SIZE; ++i) {
491	<	assertTrue(q.add(new Integer(i)));
492	<	}
493	<	assertEquals(0, q.remainingCapacity());
494	<	q.add(new Integer(SIZE));
499	>	q.add(itemFor(SIZE));
500		shouldThrow();
501		} catch (IllegalStateException success) {}
502		}
503
504		/**
505	<	* addAll(null) throws NPE
501	<	*/
502	<	public void testAddAll1() {
503	<	try {
504	<	LinkedBlockingDeque q = new LinkedBlockingDeque(1);
505	<	q.addAll(null);
506	<	shouldThrow();
507	<	} catch (NullPointerException success) {}
508	<	}
509	<
510	<	/**
511	<	* addAll(this) throws IAE
505	>	* addAll(this) throws IllegalArgumentException
506		*/
507		public void testAddAllSelf() {
508	+	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
509		try {
515	–	LinkedBlockingDeque q = populatedDeque(SIZE);
510		q.addAll(q);
511		shouldThrow();
512		} catch (IllegalArgumentException success) {}
513		}
514
515		/**
522	–	* addAll of a collection with null elements throws NPE
523	–	*/
524	–	public void testAddAll2() {
525	–	try {
526	–	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
527	–	Integer[] ints = new Integer[SIZE];
528	–	q.addAll(Arrays.asList(ints));
529	–	shouldThrow();
530	–	} catch (NullPointerException success) {}
531	–	}
532	–
533	–	/**
516		* addAll of a collection with any null elements throws NPE after
517		* possibly adding some elements
518		*/
519		public void testAddAll3() {
520	+	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(SIZE);
521	+	Item[] items = new Item[2]; items[0] = zero;
522	+	Collection<Item> elements = Arrays.asList(items);
523		try {
524	<	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
540	<	Integer[] ints = new Integer[SIZE];
541	<	for (int i = 0; i < SIZE-1; ++i)
542	<	ints[i] = new Integer(i);
543	<	q.addAll(Arrays.asList(ints));
524	>	q.addAll(elements);
525		shouldThrow();
526		} catch (NullPointerException success) {}
527		}
528
529		/**
530	<	* addAll throws ISE if not enough room
530	>	* addAll throws IllegalStateException if not enough room
531		*/
532		public void testAddAll4() {
533	+	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(SIZE - 1);
534	+	Item[] items = defaultItems;
535	+	Collection<Item> elements = Arrays.asList(items);
536		try {
537	<	LinkedBlockingDeque q = new LinkedBlockingDeque(1);
554	<	Integer[] ints = new Integer[SIZE];
555	<	for (int i = 0; i < SIZE; ++i)
556	<	ints[i] = new Integer(i);
557	<	q.addAll(Arrays.asList(ints));
537	>	q.addAll(elements);
538		shouldThrow();
539		} catch (IllegalStateException success) {}
540		}
#	Line 563 | Line 543 | public class LinkedBlockingDequeTest ext
543		* Deque contains all elements, in traversal order, of successful addAll
544		*/
545		public void testAddAll5() {
546	<	Integer[] empty = new Integer[0];
547	<	Integer[] ints = new Integer[SIZE];
548	<	for (int i = 0; i < SIZE; ++i)
569	<	ints[i] = new Integer(i);
570	<	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
546	>	Item[] empty = new Item[0];
547	>	Item[] items = defaultItems;
548	>	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(SIZE);
549		assertFalse(q.addAll(Arrays.asList(empty)));
550	<	assertTrue(q.addAll(Arrays.asList(ints)));
550	>	assertTrue(q.addAll(Arrays.asList(items)));
551		for (int i = 0; i < SIZE; ++i)
552	<	assertEquals(ints[i], q.poll());
575	<	}
576	<
577	<
578	<	/**
579	<	* put(null) throws NPE
580	<	*/
581	<	public void testPutNull() throws InterruptedException {
582	<	try {
583	<	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
584	<	q.put(null);
585	<	shouldThrow();
586	<	} catch (NullPointerException success) {}
552	>	mustEqual(items[i], q.poll());
553		}
554
555		/**
556		* all elements successfully put are contained
557		*/
558		public void testPut() throws InterruptedException {
559	<	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
559	>	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(SIZE);
560		for (int i = 0; i < SIZE; ++i) {
561	<	Integer I = new Integer(i);
562	<	q.put(I);
563	<	assertTrue(q.contains(I));
561	>	Item x = itemFor(i);
562	>	q.put(x);
563	>	mustContain(q, x);
564		}
565	<	assertEquals(0, q.remainingCapacity());
565	>	mustEqual(0, q.remainingCapacity());
566		}
567
568		/**
569		* put blocks interruptibly if full
570		*/
571		public void testBlockingPut() throws InterruptedException {
572	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
573	<	Thread t = new Thread(new CheckedRunnable() {
572	>	final LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(SIZE);
573	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
574	>	Thread t = newStartedThread(new CheckedRunnable() {
575		public void realRun() throws InterruptedException {
576		for (int i = 0; i < SIZE; ++i)
577	<	q.put(i);
578	<	assertEquals(SIZE, q.size());
579	<	assertEquals(0, q.remainingCapacity());
577	>	q.put(itemFor(i));
578	>	mustEqual(SIZE, q.size());
579	>	mustEqual(0, q.remainingCapacity());
580	>
581	>	Thread.currentThread().interrupt();
582		try {
583	<	q.put(99);
583	>	q.put(ninetynine);
584		shouldThrow();
585		} catch (InterruptedException success) {}
586	+	assertFalse(Thread.interrupted());
587	+
588	+	pleaseInterrupt.countDown();
589	+	try {
590	+	q.put(ninetynine);
591	+	shouldThrow();
592	+	} catch (InterruptedException success) {}
593	+	assertFalse(Thread.interrupted());
594		}});
595
596	<	t.start();
597	<	delay(SHORT_DELAY_MS);
596	>	await(pleaseInterrupt);
597	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
598		t.interrupt();
599	<	t.join();
600	<	assertEquals(SIZE, q.size());
601	<	assertEquals(0, q.remainingCapacity());
599	>	awaitTermination(t);
600	>	mustEqual(SIZE, q.size());
601	>	mustEqual(0, q.remainingCapacity());
602		}
603
604		/**
605	<	* put blocks waiting for take when full
605	>	* put blocks interruptibly waiting for take when full
606		*/
607		public void testPutWithTake() throws InterruptedException {
608		final int capacity = 2;
609	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(capacity);
610	<	Thread t = new Thread(new CheckedRunnable() {
609	>	final LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(capacity);
610	>	final CountDownLatch pleaseTake = new CountDownLatch(1);
611	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
612	>	Thread t = newStartedThread(new CheckedRunnable() {
613		public void realRun() throws InterruptedException {
614	<	for (int i = 0; i < capacity + 1; i++)
615	<	q.put(i);
614	>	for (int i = 0; i < capacity; i++)
615	>	q.put(itemFor(i));
616	>	pleaseTake.countDown();
617	>	q.put(eightysix);
618	>
619	>	Thread.currentThread().interrupt();
620	>	try {
621	>	q.put(ninetynine);
622	>	shouldThrow();
623	>	} catch (InterruptedException success) {}
624	>	assertFalse(Thread.interrupted());
625	>
626	>	pleaseInterrupt.countDown();
627		try {
628	<	q.put(99);
628	>	q.put(ninetynine);
629		shouldThrow();
630		} catch (InterruptedException success) {}
631	+	assertFalse(Thread.interrupted());
632		}});
633
634	<	t.start();
635	<	delay(SHORT_DELAY_MS);
636	<	assertEquals(q.remainingCapacity(), 0);
637	<	assertEquals(0, q.take());
638	<	delay(SHORT_DELAY_MS);
634	>	await(pleaseTake);
635	>	mustEqual(0, q.remainingCapacity());
636	>	mustEqual(0, q.take());
637	>
638	>	await(pleaseInterrupt);
639	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
640		t.interrupt();
641	<	t.join();
642	<	assertEquals(q.remainingCapacity(), 0);
641	>	awaitTermination(t);
642	>	mustEqual(0, q.remainingCapacity());
643		}
644
645		/**
646		* timed offer times out if full and elements not taken
647		*/
648	<	public void testTimedOffer() throws InterruptedException {
649	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
650	<	Thread t = new Thread(new CheckedRunnable() {
648	>	public void testTimedOffer() {
649	>	final LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(2);
650	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
651	>	Thread t = newStartedThread(new CheckedRunnable() {
652		public void realRun() throws InterruptedException {
653	<	q.put(new Object());
654	<	q.put(new Object());
655	<	assertFalse(q.offer(new Object(), SHORT_DELAY_MS, MILLISECONDS));
653	>	q.put(zero);
654	>	q.put(one);
655	>	long startTime = System.nanoTime();
656	>
657	>	assertFalse(q.offer(two, timeoutMillis(), MILLISECONDS));
658	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
659	>
660	>	Thread.currentThread().interrupt();
661		try {
662	<	q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS);
662	>	q.offer(three, randomTimeout(), randomTimeUnit());
663		shouldThrow();
664		} catch (InterruptedException success) {}
665	+	assertFalse(Thread.interrupted());
666	+
667	+	pleaseInterrupt.countDown();
668	+	try {
669	+	q.offer(four, LONGER_DELAY_MS, MILLISECONDS);
670	+	shouldThrow();
671	+	} catch (InterruptedException success) {}
672	+	assertFalse(Thread.interrupted());
673		}});
674
675	<	t.start();
676	<	delay(SMALL_DELAY_MS);
675	>	await(pleaseInterrupt);
676	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
677		t.interrupt();
678	<	t.join();
678	>	awaitTermination(t);
679		}
680
681		/**
682		* take retrieves elements in FIFO order
683		*/
684		public void testTake() throws InterruptedException {
685	<	LinkedBlockingDeque q = populatedDeque(SIZE);
685	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
686		for (int i = 0; i < SIZE; ++i) {
687	<	assertEquals(i, q.take());
687	>	mustEqual(i, q.take());
688		}
689		}
690
691		/**
692	<	* Take removes existing elements until empty, then blocks interruptibly
692	>	* take removes existing elements until empty, then blocks interruptibly
693		*/
694		public void testBlockingTake() throws InterruptedException {
695	<	final LinkedBlockingDeque q = populatedDeque(SIZE);
696	<	Thread t = new Thread(new CheckedRunnable() {
695	>	final LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
696	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
697	>	Thread t = newStartedThread(new CheckedRunnable() {
698		public void realRun() throws InterruptedException {
699	<	for (int i = 0; i < SIZE; ++i) {
700	<	assertEquals(i, q.take());
701	<	}
699	>	for (int i = 0; i < SIZE; i++) mustEqual(i, q.take());
700	>
701	>	Thread.currentThread().interrupt();
702	>	try {
703	>	q.take();
704	>	shouldThrow();
705	>	} catch (InterruptedException success) {}
706	>	assertFalse(Thread.interrupted());
707	>
708	>	pleaseInterrupt.countDown();
709		try {
710		q.take();
711		shouldThrow();
712		} catch (InterruptedException success) {}
713	+	assertFalse(Thread.interrupted());
714		}});
715
716	<	t.start();
717	<	delay(SHORT_DELAY_MS);
716	>	await(pleaseInterrupt);
717	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
718		t.interrupt();
719	<	t.join();
719	>	awaitTermination(t);
720		}
721
707	–
722		/**
723		* poll succeeds unless empty
724		*/
725		public void testPoll() {
726	<	LinkedBlockingDeque q = populatedDeque(SIZE);
726	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
727		for (int i = 0; i < SIZE; ++i) {
728	<	assertEquals(i, q.poll());
728	>	mustEqual(i, q.poll());
729		}
730		assertNull(q.poll());
731		}
#	Line 720 | Line 734 | public class LinkedBlockingDequeTest ext
734		* timed poll with zero timeout succeeds when non-empty, else times out
735		*/
736		public void testTimedPoll0() throws InterruptedException {
737	<	LinkedBlockingDeque q = populatedDeque(SIZE);
737	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
738		for (int i = 0; i < SIZE; ++i) {
739	<	assertEquals(i, q.poll(0, MILLISECONDS));
739	>	mustEqual(i, q.poll(0, MILLISECONDS));
740		}
741		assertNull(q.poll(0, MILLISECONDS));
742		}
#	Line 731 | Line 745 | public class LinkedBlockingDequeTest ext
745		* timed poll with nonzero timeout succeeds when non-empty, else times out
746		*/
747		public void testTimedPoll() throws InterruptedException {
748	<	LinkedBlockingDeque q = populatedDeque(SIZE);
748	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
749		for (int i = 0; i < SIZE; ++i) {
750	<	assertEquals(i, q.poll(SHORT_DELAY_MS, MILLISECONDS));
751	<	}
752	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
750	>	long startTime = System.nanoTime();
751	>	mustEqual(i, q.poll(LONG_DELAY_MS, MILLISECONDS));
752	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
753	>	}
754	>	long startTime = System.nanoTime();
755	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
756	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
757	>	checkEmpty(q);
758		}
759
760		/**
#	Line 743 | Line 762 | public class LinkedBlockingDequeTest ext
762		* returning timeout status
763		*/
764		public void testInterruptedTimedPoll() throws InterruptedException {
765	<	final BlockingQueue<Integer> q = populatedDeque(SIZE);
766	<	final CountDownLatch aboutToWait = new CountDownLatch(1);
765	>	final BlockingQueue<Item> q = populatedDeque(SIZE);
766	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
767		Thread t = newStartedThread(new CheckedRunnable() {
768		public void realRun() throws InterruptedException {
769	<	for (int i = 0; i < SIZE; ++i) {
770	<	long t0 = System.nanoTime();
771	<	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
772	<	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
773	<	}
774	<	long t0 = System.nanoTime();
775	<	aboutToWait.countDown();
776	<	try {
777	<	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
778	<	shouldThrow();
779	<	} catch (InterruptedException success) {
780	<	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
781	<	}
769	>	for (int i = 0; i < SIZE; i++)
770	>	mustEqual(i, q.poll(LONG_DELAY_MS, MILLISECONDS));
771	>
772	>	Thread.currentThread().interrupt();
773	>	try {
774	>	q.poll(randomTimeout(), randomTimeUnit());
775	>	shouldThrow();
776	>	} catch (InterruptedException success) {}
777	>	assertFalse(Thread.interrupted());
778	>
779	>	pleaseInterrupt.countDown();
780	>	try {
781	>	q.poll(LONGER_DELAY_MS, MILLISECONDS);
782	>	shouldThrow();
783	>	} catch (InterruptedException success) {}
784	>	assertFalse(Thread.interrupted());
785		}});
786
787	<	aboutToWait.await();
788	<	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
787	>	await(pleaseInterrupt);
788	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
789		t.interrupt();
790	<	awaitTermination(t, MEDIUM_DELAY_MS);
790	>	awaitTermination(t);
791		checkEmpty(q);
792		}
793
#	Line 773 | Line 795 | public class LinkedBlockingDequeTest ext
795		* putFirst(null) throws NPE
796		*/
797		public void testPutFirstNull() throws InterruptedException {
798	+	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(SIZE);
799		try {
777	–	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
800		q.putFirst(null);
801		shouldThrow();
802		} catch (NullPointerException success) {}
#	Line 784 | Line 806 | public class LinkedBlockingDequeTest ext
806		* all elements successfully putFirst are contained
807		*/
808		public void testPutFirst() throws InterruptedException {
809	<	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
809	>	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(SIZE);
810		for (int i = 0; i < SIZE; ++i) {
811	<	Integer I = new Integer(i);
812	<	q.putFirst(I);
813	<	assertTrue(q.contains(I));
811	>	Item x = itemFor(i);
812	>	q.putFirst(x);
813	>	mustContain(q, x);
814		}
815	<	assertEquals(0, q.remainingCapacity());
815	>	mustEqual(0, q.remainingCapacity());
816		}
817
818		/**
819		* putFirst blocks interruptibly if full
820		*/
821		public void testBlockingPutFirst() throws InterruptedException {
822	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
823	<	Thread t = new Thread(new CheckedRunnable() {
822	>	final LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(SIZE);
823	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
824	>	Thread t = newStartedThread(new CheckedRunnable() {
825		public void realRun() throws InterruptedException {
826		for (int i = 0; i < SIZE; ++i)
827	<	q.putFirst(i);
828	<	assertEquals(SIZE, q.size());
829	<	assertEquals(0, q.remainingCapacity());
827	>	q.putFirst(itemFor(i));
828	>	mustEqual(SIZE, q.size());
829	>	mustEqual(0, q.remainingCapacity());
830	>
831	>	Thread.currentThread().interrupt();
832		try {
833	<	q.putFirst(99);
833	>	q.putFirst(ninetynine);
834		shouldThrow();
835		} catch (InterruptedException success) {}
836	+	assertFalse(Thread.interrupted());
837	+
838	+	pleaseInterrupt.countDown();
839	+	try {
840	+	q.putFirst(ninetynine);
841	+	shouldThrow();
842	+	} catch (InterruptedException success) {}
843	+	assertFalse(Thread.interrupted());
844		}});
845
846	<	t.start();
847	<	delay(SHORT_DELAY_MS);
846	>	await(pleaseInterrupt);
847	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
848		t.interrupt();
849	<	t.join();
850	<	assertEquals(SIZE, q.size());
851	<	assertEquals(0, q.remainingCapacity());
849	>	awaitTermination(t);
850	>	mustEqual(SIZE, q.size());
851	>	mustEqual(0, q.remainingCapacity());
852		}
853
854		/**
855	<	* putFirst blocks waiting for take when full
855	>	* putFirst blocks interruptibly waiting for take when full
856		*/
857		public void testPutFirstWithTake() throws InterruptedException {
858		final int capacity = 2;
859	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(capacity);
860	<	Thread t = new Thread(new CheckedRunnable() {
859	>	final LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(capacity);
860	>	final CountDownLatch pleaseTake = new CountDownLatch(1);
861	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
862	>	Thread t = newStartedThread(new CheckedRunnable() {
863		public void realRun() throws InterruptedException {
864	<	for (int i = 0; i < capacity + 1; i++)
865	<	q.putFirst(i);
864	>	for (int i = 0; i < capacity; i++)
865	>	q.putFirst(itemFor(i));
866	>	pleaseTake.countDown();
867	>	q.putFirst(eightysix);
868	>
869	>	pleaseInterrupt.countDown();
870		try {
871	<	q.putFirst(99);
871	>	q.putFirst(ninetynine);
872		shouldThrow();
873		} catch (InterruptedException success) {}
874	+	assertFalse(Thread.interrupted());
875		}});
876
877	<	t.start();
878	<	delay(SHORT_DELAY_MS);
879	<	assertEquals(q.remainingCapacity(), 0);
880	<	assertEquals(capacity - 1, q.take());
881	<	delay(SHORT_DELAY_MS);
877	>	await(pleaseTake);
878	>	mustEqual(0, q.remainingCapacity());
879	>	mustEqual(capacity - 1, q.take());
880	>
881	>	await(pleaseInterrupt);
882	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
883		t.interrupt();
884	<	t.join();
885	<	assertEquals(q.remainingCapacity(), 0);
884	>	awaitTermination(t);
885	>	mustEqual(0, q.remainingCapacity());
886		}
887
888		/**
889		* timed offerFirst times out if full and elements not taken
890		*/
891	<	public void testTimedOfferFirst() throws InterruptedException {
892	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
893	<	Thread t = new Thread(new CheckedRunnable() {
891	>	public void testTimedOfferFirst() {
892	>	final LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(2);
893	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
894	>	Thread t = newStartedThread(new CheckedRunnable() {
895		public void realRun() throws InterruptedException {
896	<	q.putFirst(new Object());
897	<	q.putFirst(new Object());
898	<	assertFalse(q.offerFirst(new Object(), SHORT_DELAY_MS, MILLISECONDS));
896	>	q.putFirst(zero);
897	>	q.putFirst(one);
898	>	long startTime = System.nanoTime();
899	>
900	>	assertFalse(q.offerFirst(two, timeoutMillis(), MILLISECONDS));
901	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
902	>
903	>	Thread.currentThread().interrupt();
904		try {
905	<	q.offerFirst(new Object(), LONG_DELAY_MS, MILLISECONDS);
905	>	q.offerFirst(three, randomTimeout(), randomTimeUnit());
906		shouldThrow();
907		} catch (InterruptedException success) {}
908	+	assertFalse(Thread.interrupted());
909	+
910	+	pleaseInterrupt.countDown();
911	+	try {
912	+	q.offerFirst(four, LONGER_DELAY_MS, MILLISECONDS);
913	+	shouldThrow();
914	+	} catch (InterruptedException success) {}
915	+	assertFalse(Thread.interrupted());
916		}});
917
918	<	t.start();
919	<	delay(SMALL_DELAY_MS);
918	>	await(pleaseInterrupt);
919	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
920		t.interrupt();
921	<	t.join();
921	>	awaitTermination(t);
922		}
923
924		/**
925		* take retrieves elements in FIFO order
926		*/
927		public void testTakeFirst() throws InterruptedException {
928	<	LinkedBlockingDeque q = populatedDeque(SIZE);
928	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
929		for (int i = 0; i < SIZE; ++i) {
930	<	assertEquals(i, q.takeFirst());
930	>	mustEqual(i, q.takeFirst());
931		}
932		}
933
934		/**
935	<	* takeFirst blocks interruptibly when empty
935	>	* takeFirst() blocks interruptibly when empty
936		*/
937	<	public void testTakeFirstFromEmpty() throws InterruptedException {
938	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
939	<	Thread t = new ThreadShouldThrow(InterruptedException.class) {
940	<	public void realRun() throws InterruptedException {
941	<	q.takeFirst();
942	<	}};
937	>	public void testTakeFirstFromEmptyBlocksInterruptibly() {
938	>	final BlockingDeque<Item> q = new LinkedBlockingDeque<>();
939	>	final CountDownLatch threadStarted = new CountDownLatch(1);
940	>	Thread t = newStartedThread(new CheckedRunnable() {
941	>	public void realRun() {
942	>	threadStarted.countDown();
943	>	try {
944	>	q.takeFirst();
945	>	shouldThrow();
946	>	} catch (InterruptedException success) {}
947	>	assertFalse(Thread.interrupted());
948	>	}});
949
950	<	t.start();
951	<	delay(SHORT_DELAY_MS);
950	>	await(threadStarted);
951	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
952		t.interrupt();
953	<	t.join();
953	>	awaitTermination(t);
954	>	}
955	>
956	>	/**
957	>	* takeFirst() throws InterruptedException immediately if interrupted
958	>	* before waiting
959	>	*/
960	>	public void testTakeFirstFromEmptyAfterInterrupt() {
961	>	final BlockingDeque<Item> q = new LinkedBlockingDeque<>();
962	>	Thread t = newStartedThread(new CheckedRunnable() {
963	>	public void realRun() {
964	>	Thread.currentThread().interrupt();
965	>	try {
966	>	q.takeFirst();
967	>	shouldThrow();
968	>	} catch (InterruptedException success) {}
969	>	assertFalse(Thread.interrupted());
970	>	}});
971	>
972	>	awaitTermination(t);
973	>	}
974	>
975	>	/**
976	>	* takeLast() blocks interruptibly when empty
977	>	*/
978	>	public void testTakeLastFromEmptyBlocksInterruptibly() {
979	>	final BlockingDeque<Item> q = new LinkedBlockingDeque<>();
980	>	final CountDownLatch threadStarted = new CountDownLatch(1);
981	>	Thread t = newStartedThread(new CheckedRunnable() {
982	>	public void realRun() {
983	>	threadStarted.countDown();
984	>	try {
985	>	q.takeLast();
986	>	shouldThrow();
987	>	} catch (InterruptedException success) {}
988	>	assertFalse(Thread.interrupted());
989	>	}});
990	>
991	>	await(threadStarted);
992	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
993	>	t.interrupt();
994	>	awaitTermination(t);
995		}
996
997		/**
998	<	* TakeFirst removes existing elements until empty, then blocks interruptibly
998	>	* takeLast() throws InterruptedException immediately if interrupted
999	>	* before waiting
1000	>	*/
1001	>	public void testTakeLastFromEmptyAfterInterrupt() {
1002	>	final BlockingDeque<Item> q = new LinkedBlockingDeque<>();
1003	>	Thread t = newStartedThread(new CheckedRunnable() {
1004	>	public void realRun() {
1005	>	Thread.currentThread().interrupt();
1006	>	try {
1007	>	q.takeLast();
1008	>	shouldThrow();
1009	>	} catch (InterruptedException success) {}
1010	>	assertFalse(Thread.interrupted());
1011	>	}});
1012	>
1013	>	awaitTermination(t);
1014	>	}
1015	>
1016	>	/**
1017	>	* takeFirst removes existing elements until empty, then blocks interruptibly
1018		*/
1019		public void testBlockingTakeFirst() throws InterruptedException {
1020	<	final LinkedBlockingDeque q = populatedDeque(SIZE);
1021	<	Thread t = new Thread(new CheckedRunnable() {
1020	>	final LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1021	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
1022	>	Thread t = newStartedThread(new CheckedRunnable() {
1023		public void realRun() throws InterruptedException {
1024	<	for (int i = 0; i < SIZE; ++i)
1025	<	assertEquals(i, q.takeFirst());
1024	>	for (int i = 0; i < SIZE; i++) mustEqual(i, q.takeFirst());
1025	>
1026	>	Thread.currentThread().interrupt();
1027		try {
1028		q.takeFirst();
1029		shouldThrow();
1030		} catch (InterruptedException success) {}
1031	+	assertFalse(Thread.interrupted());
1032	+
1033	+	pleaseInterrupt.countDown();
1034	+	try {
1035	+	q.takeFirst();
1036	+	shouldThrow();
1037	+	} catch (InterruptedException success) {}
1038	+	assertFalse(Thread.interrupted());
1039		}});
1040
1041	<	t.start();
1042	<	delay(SHORT_DELAY_MS);
1041	>	await(pleaseInterrupt);
1042	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
1043		t.interrupt();
1044	<	t.join();
1044	>	awaitTermination(t);
1045		}
1046
916	–
1047		/**
1048		* timed pollFirst with zero timeout succeeds when non-empty, else times out
1049		*/
1050		public void testTimedPollFirst0() throws InterruptedException {
1051	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1051	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1052		for (int i = 0; i < SIZE; ++i) {
1053	<	assertEquals(i, q.pollFirst(0, MILLISECONDS));
1053	>	mustEqual(i, q.pollFirst(0, MILLISECONDS));
1054		}
1055		assertNull(q.pollFirst(0, MILLISECONDS));
1056		}
#	Line 929 | Line 1059 | public class LinkedBlockingDequeTest ext
1059		* timed pollFirst with nonzero timeout succeeds when non-empty, else times out
1060		*/
1061		public void testTimedPollFirst() throws InterruptedException {
1062	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1062	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1063		for (int i = 0; i < SIZE; ++i) {
1064	<	assertEquals(i, q.pollFirst(SHORT_DELAY_MS, MILLISECONDS));
1065	<	}
1066	<	assertNull(q.pollFirst(SHORT_DELAY_MS, MILLISECONDS));
1064	>	long startTime = System.nanoTime();
1065	>	mustEqual(i, q.pollFirst(LONG_DELAY_MS, MILLISECONDS));
1066	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1067	>	}
1068	>	long startTime = System.nanoTime();
1069	>	assertNull(q.pollFirst(timeoutMillis(), MILLISECONDS));
1070	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
1071	>	checkEmpty(q);
1072		}
1073
1074		/**
#	Line 941 | Line 1076 | public class LinkedBlockingDequeTest ext
1076		* returning timeout status
1077		*/
1078		public void testInterruptedTimedPollFirst() throws InterruptedException {
1079	<	Thread t = new Thread(new CheckedRunnable() {
1079	>	final LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1080	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
1081	>	Thread t = newStartedThread(new CheckedRunnable() {
1082		public void realRun() throws InterruptedException {
1083	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1084	<	for (int i = 0; i < SIZE; ++i) {
1085	<	assertEquals(i, q.pollFirst(SHORT_DELAY_MS, MILLISECONDS));
1086	<	}
1083	>	for (int i = 0; i < SIZE; i++)
1084	>	mustEqual(i, q.pollFirst(LONG_DELAY_MS, MILLISECONDS));
1085	>
1086	>	Thread.currentThread().interrupt();
1087	>	try {
1088	>	q.pollFirst(randomTimeout(), randomTimeUnit());
1089	>	shouldThrow();
1090	>	} catch (InterruptedException success) {}
1091	>	assertFalse(Thread.interrupted());
1092	>
1093	>	pleaseInterrupt.countDown();
1094		try {
1095	<	q.pollFirst(SMALL_DELAY_MS, MILLISECONDS);
1095	>	q.pollFirst(LONGER_DELAY_MS, MILLISECONDS);
1096		shouldThrow();
1097		} catch (InterruptedException success) {}
1098	+	assertFalse(Thread.interrupted());
1099		}});
1100
1101	<	t.start();
1102	<	delay(SHORT_DELAY_MS);
1101	>	await(pleaseInterrupt);
1102	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
1103		t.interrupt();
1104	<	t.join();
1104	>	awaitTermination(t);
1105		}
1106
1107		/**
#	Line 964 | Line 1109 | public class LinkedBlockingDequeTest ext
1109		* on interruption throws
1110		*/
1111		public void testTimedPollFirstWithOfferFirst() throws InterruptedException {
1112	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
1113	<	Thread t = new Thread(new CheckedRunnable() {
1112	>	final LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(2);
1113	>	final CheckedBarrier barrier = new CheckedBarrier(2);
1114	>	Thread t = newStartedThread(new CheckedRunnable() {
1115		public void realRun() throws InterruptedException {
1116	<	assertNull(q.pollFirst(SHORT_DELAY_MS, MILLISECONDS));
1116	>	long startTime = System.nanoTime();
1117	>	assertNull(q.pollFirst(timeoutMillis(), MILLISECONDS));
1118	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
1119	>
1120	>	barrier.await();
1121	>
1122		assertSame(zero, q.pollFirst(LONG_DELAY_MS, MILLISECONDS));
1123	+
1124	+	Thread.currentThread().interrupt();
1125	+	try {
1126	+	q.pollFirst(randomTimeout(), randomTimeUnit());
1127	+	shouldThrow();
1128	+	} catch (InterruptedException success) {}
1129	+
1130	+	barrier.await();
1131		try {
1132		q.pollFirst(LONG_DELAY_MS, MILLISECONDS);
1133		shouldThrow();
1134		} catch (InterruptedException success) {}
1135	+	assertFalse(Thread.interrupted());
1136	+
1137	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1138		}});
1139
1140	<	t.start();
1141	<	delay(SMALL_DELAY_MS);
1142	<	assertTrue(q.offerFirst(zero, SHORT_DELAY_MS, MILLISECONDS));
1140	>	barrier.await();
1141	>	long startTime = System.nanoTime();
1142	>	assertTrue(q.offerFirst(zero, LONG_DELAY_MS, MILLISECONDS));
1143	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1144	>	barrier.await();
1145	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
1146		t.interrupt();
1147	<	t.join();
1147	>	awaitTermination(t);
1148		}
1149
1150		/**
1151		* putLast(null) throws NPE
1152		*/
1153		public void testPutLastNull() throws InterruptedException {
1154	+	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(SIZE);
1155		try {
990	–	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
1156		q.putLast(null);
1157		shouldThrow();
1158		} catch (NullPointerException success) {}
#	Line 997 | Line 1162 | public class LinkedBlockingDequeTest ext
1162		* all elements successfully putLast are contained
1163		*/
1164		public void testPutLast() throws InterruptedException {
1165	<	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
1165	>	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(SIZE);
1166		for (int i = 0; i < SIZE; ++i) {
1167	<	Integer I = new Integer(i);
1168	<	q.putLast(I);
1169	<	assertTrue(q.contains(I));
1167	>	Item x = itemFor(i);
1168	>	q.putLast(x);
1169	>	mustContain(q, x);
1170		}
1171	<	assertEquals(0, q.remainingCapacity());
1171	>	mustEqual(0, q.remainingCapacity());
1172		}
1173
1174		/**
1175		* putLast blocks interruptibly if full
1176		*/
1177		public void testBlockingPutLast() throws InterruptedException {
1178	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
1179	<	Thread t = new Thread(new CheckedRunnable() {
1178	>	final LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(SIZE);
1179	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
1180	>	Thread t = newStartedThread(new CheckedRunnable() {
1181		public void realRun() throws InterruptedException {
1182		for (int i = 0; i < SIZE; ++i)
1183	<	q.putLast(i);
1184	<	assertEquals(SIZE, q.size());
1185	<	assertEquals(0, q.remainingCapacity());
1183	>	q.putLast(itemFor(i));
1184	>	mustEqual(SIZE, q.size());
1185	>	mustEqual(0, q.remainingCapacity());
1186	>
1187	>	Thread.currentThread().interrupt();
1188		try {
1189	<	q.putLast(99);
1189	>	q.putLast(ninetynine);
1190		shouldThrow();
1191		} catch (InterruptedException success) {}
1192	+	assertFalse(Thread.interrupted());
1193	+
1194	+	pleaseInterrupt.countDown();
1195	+	try {
1196	+	q.putLast(ninetynine);
1197	+	shouldThrow();
1198	+	} catch (InterruptedException success) {}
1199	+	assertFalse(Thread.interrupted());
1200		}});
1201
1202	<	t.start();
1203	<	delay(SHORT_DELAY_MS);
1202	>	await(pleaseInterrupt);
1203	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
1204		t.interrupt();
1205	<	t.join();
1206	<	assertEquals(SIZE, q.size());
1207	<	assertEquals(0, q.remainingCapacity());
1205	>	awaitTermination(t);
1206	>	mustEqual(SIZE, q.size());
1207	>	mustEqual(0, q.remainingCapacity());
1208		}
1209
1210		/**
1211	<	* putLast blocks waiting for take when full
1211	>	* putLast blocks interruptibly waiting for take when full
1212		*/
1213		public void testPutLastWithTake() throws InterruptedException {
1214		final int capacity = 2;
1215	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(capacity);
1216	<	Thread t = new Thread(new CheckedRunnable() {
1215	>	final LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(capacity);
1216	>	final CountDownLatch pleaseTake = new CountDownLatch(1);
1217	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
1218	>	Thread t = newStartedThread(new CheckedRunnable() {
1219		public void realRun() throws InterruptedException {
1220	<	for (int i = 0; i < capacity + 1; i++)
1221	<	q.putLast(i);
1220	>	for (int i = 0; i < capacity; i++)
1221	>	q.putLast(itemFor(i));
1222	>	pleaseTake.countDown();
1223	>	q.putLast(eightysix);
1224	>
1225	>	Thread.currentThread().interrupt();
1226	>	try {
1227	>	q.putLast(ninetynine);
1228	>	shouldThrow();
1229	>	} catch (InterruptedException success) {}
1230	>	assertFalse(Thread.interrupted());
1231	>
1232	>	pleaseInterrupt.countDown();
1233		try {
1234	<	q.putLast(99);
1234	>	q.putLast(ninetynine);
1235		shouldThrow();
1236		} catch (InterruptedException success) {}
1237	+	assertFalse(Thread.interrupted());
1238		}});
1239
1240	<	t.start();
1241	<	delay(SHORT_DELAY_MS);
1242	<	assertEquals(q.remainingCapacity(), 0);
1243	<	assertEquals(0, q.take());
1244	<	delay(SHORT_DELAY_MS);
1240	>	await(pleaseTake);
1241	>	mustEqual(0, q.remainingCapacity());
1242	>	mustEqual(0, q.take());
1243	>
1244	>	await(pleaseInterrupt);
1245	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
1246		t.interrupt();
1247	<	t.join();
1248	<	assertEquals(q.remainingCapacity(), 0);
1247	>	awaitTermination(t);
1248	>	mustEqual(0, q.remainingCapacity());
1249		}
1250
1251		/**
1252		* timed offerLast times out if full and elements not taken
1253		*/
1254	<	public void testTimedOfferLast() throws InterruptedException {
1255	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
1256	<	Thread t = new Thread(new CheckedRunnable() {
1254	>	public void testTimedOfferLast() {
1255	>	final LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(2);
1256	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
1257	>	Thread t = newStartedThread(new CheckedRunnable() {
1258		public void realRun() throws InterruptedException {
1259	<	q.putLast(new Object());
1260	<	q.putLast(new Object());
1261	<	assertFalse(q.offerLast(new Object(), SHORT_DELAY_MS, MILLISECONDS));
1259	>	q.putLast(zero);
1260	>	q.putLast(one);
1261	>	long startTime = System.nanoTime();
1262	>
1263	>	assertFalse(q.offerLast(two, timeoutMillis(), MILLISECONDS));
1264	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
1265	>
1266	>	Thread.currentThread().interrupt();
1267	>	try {
1268	>	q.offerLast(three, randomTimeout(), randomTimeUnit());
1269	>	shouldThrow();
1270	>	} catch (InterruptedException success) {}
1271	>
1272	>	pleaseInterrupt.countDown();
1273		try {
1274	<	q.offerLast(new Object(), LONG_DELAY_MS, MILLISECONDS);
1274	>	q.offerLast(four, LONGER_DELAY_MS, MILLISECONDS);
1275		shouldThrow();
1276		} catch (InterruptedException success) {}
1277		}});
1278
1279	<	t.start();
1280	<	delay(SMALL_DELAY_MS);
1279	>	await(pleaseInterrupt);
1280	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
1281		t.interrupt();
1282	<	t.join();
1282	>	awaitTermination(t);
1283		}
1284
1285		/**
1286		* takeLast retrieves elements in FIFO order
1287		*/
1288		public void testTakeLast() throws InterruptedException {
1289	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1289	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1290		for (int i = 0; i < SIZE; ++i) {
1291	<	assertEquals(SIZE-i-1, q.takeLast());
1291	>	mustEqual(SIZE - i - 1, q.takeLast());
1292		}
1293		}
1294
1295		/**
1296	<	* takeLast blocks interruptibly when empty
1296	>	* takeLast removes existing elements until empty, then blocks interruptibly
1297		*/
1298	<	public void testTakeLastFromEmpty() throws InterruptedException {
1299	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
1300	<	Thread t = new ThreadShouldThrow(InterruptedException.class) {
1298	>	public void testBlockingTakeLast() throws InterruptedException {
1299	>	final LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1300	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
1301	>	Thread t = newStartedThread(new CheckedRunnable() {
1302		public void realRun() throws InterruptedException {
1303	<	q.takeLast();
1304	<	}};
1303	>	for (int i = 0; i < SIZE; i++)
1304	>	mustEqual(SIZE - i - 1, q.takeLast());
1305
1306	<	t.start();
1307	<	delay(SHORT_DELAY_MS);
1308	<	t.interrupt();
1309	<	t.join();
1310	<	}
1306	>	Thread.currentThread().interrupt();
1307	>	try {
1308	>	q.takeLast();
1309	>	shouldThrow();
1310	>	} catch (InterruptedException success) {}
1311	>	assertFalse(Thread.interrupted());
1312
1313	<	/**
1109	<	* TakeLast removes existing elements until empty, then blocks interruptibly
1110	<	*/
1111	<	public void testBlockingTakeLast() throws InterruptedException {
1112	<	final LinkedBlockingDeque q = populatedDeque(SIZE);
1113	<	Thread t = new Thread(new CheckedRunnable() {
1114	<	public void realRun() throws InterruptedException {
1115	<	for (int i = 0; i < SIZE; ++i)
1116	<	assertEquals(SIZE - 1 - i, q.takeLast());
1313	>	pleaseInterrupt.countDown();
1314		try {
1315		q.takeLast();
1316		shouldThrow();
1317		} catch (InterruptedException success) {}
1318	+	assertFalse(Thread.interrupted());
1319		}});
1320
1321	<	t.start();
1322	<	delay(SHORT_DELAY_MS);
1321	>	await(pleaseInterrupt);
1322	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
1323		t.interrupt();
1324	<	t.join();
1324	>	awaitTermination(t);
1325		}
1326
1327		/**
1328		* timed pollLast with zero timeout succeeds when non-empty, else times out
1329		*/
1330		public void testTimedPollLast0() throws InterruptedException {
1331	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1331	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1332		for (int i = 0; i < SIZE; ++i) {
1333	<	assertEquals(SIZE-i-1, q.pollLast(0, MILLISECONDS));
1333	>	mustEqual(SIZE - i - 1, q.pollLast(0, MILLISECONDS));
1334		}
1335		assertNull(q.pollLast(0, MILLISECONDS));
1336		}
#	Line 1141 | Line 1339 | public class LinkedBlockingDequeTest ext
1339		* timed pollLast with nonzero timeout succeeds when non-empty, else times out
1340		*/
1341		public void testTimedPollLast() throws InterruptedException {
1342	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1342	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1343		for (int i = 0; i < SIZE; ++i) {
1344	<	assertEquals(SIZE-i-1, q.pollLast(SHORT_DELAY_MS, MILLISECONDS));
1345	<	}
1346	<	assertNull(q.pollLast(SHORT_DELAY_MS, MILLISECONDS));
1344	>	long startTime = System.nanoTime();
1345	>	mustEqual(SIZE - i - 1, q.pollLast(LONG_DELAY_MS, MILLISECONDS));
1346	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1347	>	}
1348	>	long startTime = System.nanoTime();
1349	>	assertNull(q.pollLast(timeoutMillis(), MILLISECONDS));
1350	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
1351	>	checkEmpty(q);
1352		}
1353
1354		/**
#	Line 1153 | Line 1356 | public class LinkedBlockingDequeTest ext
1356		* returning timeout status
1357		*/
1358		public void testInterruptedTimedPollLast() throws InterruptedException {
1359	<	Thread t = new Thread(new CheckedRunnable() {
1359	>	final LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1360	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
1361	>	Thread t = newStartedThread(new CheckedRunnable() {
1362		public void realRun() throws InterruptedException {
1363	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1364	<	for (int i = 0; i < SIZE; ++i) {
1365	<	assertEquals(SIZE-i-1, q.pollLast(SHORT_DELAY_MS, MILLISECONDS));
1366	<	}
1363	>	for (int i = 0; i < SIZE; i++)
1364	>	mustEqual(SIZE - i - 1,
1365	>	q.pollLast(LONG_DELAY_MS, MILLISECONDS));
1366	>
1367	>	Thread.currentThread().interrupt();
1368	>	try {
1369	>	q.pollLast(randomTimeout(), randomTimeUnit());
1370	>	shouldThrow();
1371	>	} catch (InterruptedException success) {}
1372	>	assertFalse(Thread.interrupted());
1373	>
1374	>	pleaseInterrupt.countDown();
1375		try {
1376	<	q.pollLast(SMALL_DELAY_MS, MILLISECONDS);
1376	>	q.pollLast(LONGER_DELAY_MS, MILLISECONDS);
1377		shouldThrow();
1378		} catch (InterruptedException success) {}
1379	+	assertFalse(Thread.interrupted());
1380		}});
1381
1382	<	t.start();
1383	<	delay(SHORT_DELAY_MS);
1382	>	await(pleaseInterrupt);
1383	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
1384		t.interrupt();
1385	<	t.join();
1385	>	awaitTermination(t);
1386	>	checkEmpty(q);
1387		}
1388
1389		/**
#	Line 1176 | Line 1391 | public class LinkedBlockingDequeTest ext
1391		* on interruption throws
1392		*/
1393		public void testTimedPollWithOfferLast() throws InterruptedException {
1394	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
1395	<	Thread t = new Thread(new CheckedRunnable() {
1394	>	final LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(2);
1395	>	final CheckedBarrier barrier = new CheckedBarrier(2);
1396	>	Thread t = newStartedThread(new CheckedRunnable() {
1397		public void realRun() throws InterruptedException {
1398	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
1398	>	long startTime = System.nanoTime();
1399	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
1400	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
1401	>
1402	>	barrier.await();
1403	>
1404		assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS));
1405	+
1406	+	Thread.currentThread().interrupt();
1407	+	try {
1408	+	q.poll(randomTimeout(), randomTimeUnit());
1409	+	shouldThrow();
1410	+	} catch (InterruptedException success) {}
1411	+	assertFalse(Thread.interrupted());
1412	+
1413	+	barrier.await();
1414		try {
1415		q.poll(LONG_DELAY_MS, MILLISECONDS);
1416		shouldThrow();
1417		} catch (InterruptedException success) {}
1418	+	assertFalse(Thread.interrupted());
1419	+
1420	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1421		}});
1422
1423	<	t.start();
1424	<	delay(SMALL_DELAY_MS);
1425	<	assertTrue(q.offerLast(zero, SHORT_DELAY_MS, MILLISECONDS));
1423	>	barrier.await();
1424	>	long startTime = System.nanoTime();
1425	>	assertTrue(q.offerLast(zero, LONG_DELAY_MS, MILLISECONDS));
1426	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1427	>
1428	>	barrier.await();
1429	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
1430		t.interrupt();
1431	<	t.join();
1431	>	awaitTermination(t);
1432		}
1433
1197	–
1434		/**
1435		* element returns next element, or throws NSEE if empty
1436		*/
1437		public void testElement() {
1438	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1438	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1439		for (int i = 0; i < SIZE; ++i) {
1440	<	assertEquals(i, q.element());
1440	>	mustEqual(i, q.element());
1441		q.poll();
1442		}
1443		try {
#	Line 1211 | Line 1447 | public class LinkedBlockingDequeTest ext
1447		}
1448
1449		/**
1214	–	* remove(x) removes x and returns true if present
1215	–	*/
1216	–	public void testRemoveElement() {
1217	–	LinkedBlockingDeque q = populatedDeque(SIZE);
1218	–	for (int i = 1; i < SIZE; i+=2) {
1219	–	assertTrue(q.contains(i));
1220	–	assertTrue(q.remove(i));
1221	–	assertFalse(q.contains(i));
1222	–	assertTrue(q.contains(i-1));
1223	–	}
1224	–	for (int i = 0; i < SIZE; i+=2) {
1225	–	assertTrue(q.contains(i));
1226	–	assertTrue(q.remove(i));
1227	–	assertFalse(q.contains(i));
1228	–	assertFalse(q.remove(i+1));
1229	–	assertFalse(q.contains(i+1));
1230	–	}
1231	–	assertTrue(q.isEmpty());
1232	–	}
1233	–
1234	–	/**
1450		* contains(x) reports true when elements added but not yet removed
1451		*/
1452		public void testContains() {
1453	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1453	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1454		for (int i = 0; i < SIZE; ++i) {
1455	<	assertTrue(q.contains(new Integer(i)));
1455	>	mustContain(q, i);
1456		q.poll();
1457	<	assertFalse(q.contains(new Integer(i)));
1457	>	mustNotContain(q, i);
1458		}
1459		}
1460
#	Line 1247 | Line 1462 | public class LinkedBlockingDequeTest ext
1462		* clear removes all elements
1463		*/
1464		public void testClear() {
1465	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1465	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1466		q.clear();
1467		assertTrue(q.isEmpty());
1468	<	assertEquals(0, q.size());
1469	<	assertEquals(SIZE, q.remainingCapacity());
1468	>	mustEqual(0, q.size());
1469	>	mustEqual(SIZE, q.remainingCapacity());
1470		q.add(one);
1471		assertFalse(q.isEmpty());
1472	<	assertTrue(q.contains(one));
1472	>	mustContain(q, one);
1473		q.clear();
1474		assertTrue(q.isEmpty());
1475		}
#	Line 1263 | Line 1478 | public class LinkedBlockingDequeTest ext
1478		* containsAll(c) is true when c contains a subset of elements
1479		*/
1480		public void testContainsAll() {
1481	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1482	<	LinkedBlockingDeque p = new LinkedBlockingDeque(SIZE);
1481	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1482	>	LinkedBlockingDeque<Item> p = new LinkedBlockingDeque<>(SIZE);
1483		for (int i = 0; i < SIZE; ++i) {
1484		assertTrue(q.containsAll(p));
1485		assertFalse(p.containsAll(q));
1486	<	p.add(new Integer(i));
1486	>	mustAdd(p, i);
1487		}
1488		assertTrue(p.containsAll(q));
1489		}
#	Line 1277 | Line 1492 | public class LinkedBlockingDequeTest ext
1492		* retainAll(c) retains only those elements of c and reports true if changed
1493		*/
1494		public void testRetainAll() {
1495	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1496	<	LinkedBlockingDeque p = populatedDeque(SIZE);
1495	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1496	>	LinkedBlockingDeque<Item> p = populatedDeque(SIZE);
1497		for (int i = 0; i < SIZE; ++i) {
1498		boolean changed = q.retainAll(p);
1499		if (i == 0)
#	Line 1287 | Line 1502 | public class LinkedBlockingDequeTest ext
1502		assertTrue(changed);
1503
1504		assertTrue(q.containsAll(p));
1505	<	assertEquals(SIZE-i, q.size());
1505	>	mustEqual(SIZE - i, q.size());
1506		p.remove();
1507		}
1508		}
#	Line 1297 | Line 1512 | public class LinkedBlockingDequeTest ext
1512		*/
1513		public void testRemoveAll() {
1514		for (int i = 1; i < SIZE; ++i) {
1515	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1516	<	LinkedBlockingDeque p = populatedDeque(i);
1515	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1516	>	LinkedBlockingDeque<Item> p = populatedDeque(i);
1517		assertTrue(q.removeAll(p));
1518	<	assertEquals(SIZE-i, q.size());
1518	>	mustEqual(SIZE - i, q.size());
1519		for (int j = 0; j < i; ++j) {
1520	<	Integer I = (Integer)(p.remove());
1306	<	assertFalse(q.contains(I));
1520	>	mustNotContain(q, p.remove());
1521		}
1522		}
1523		}
#	Line 1311 | Line 1525 | public class LinkedBlockingDequeTest ext
1525		/**
1526		* toArray contains all elements in FIFO order
1527		*/
1528	<	public void testToArray() throws InterruptedException{
1529	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1530	<	Object[] o = q.toArray();
1531	<	for (int i = 0; i < o.length; i++)
1532	<	assertSame(o[i], q.poll());
1528	>	public void testToArray() throws InterruptedException {
1529	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1530	>	Object[] a = q.toArray();
1531	>	assertSame(Object[].class, a.getClass());
1532	>	for (Object o : a)
1533	>	assertSame(o, q.poll());
1534	>	assertTrue(q.isEmpty());
1535		}
1536
1537		/**
1538		* toArray(a) contains all elements in FIFO order
1539		*/
1540		public void testToArray2() {
1541	<	LinkedBlockingDeque<Integer> q = populatedDeque(SIZE);
1542	<	Integer[] ints = new Integer[SIZE];
1543	<	Integer[] array = q.toArray(ints);
1544	<	assertSame(ints, array);
1545	<	for (int i = 0; i < ints.length; i++)
1546	<	assertSame(ints[i], q.remove());
1547	<	}
1332	<
1333	<	/**
1334	<	* toArray(null) throws NullPointerException
1335	<	*/
1336	<	public void testToArray_NullArg() {
1337	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1338	<	try {
1339	<	q.toArray(null);
1340	<	shouldThrow();
1341	<	} catch (NullPointerException success) {}
1541	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1542	>	Item[] items = new Item[SIZE];
1543	>	Item[] array = q.toArray(items);
1544	>	assertSame(items, array);
1545	>	for (Item o : items)
1546	>	assertSame(o, q.remove());
1547	>	assertTrue(q.isEmpty());
1548		}
1549
1550		/**
1551		* toArray(incompatible array type) throws ArrayStoreException
1552		*/
1553		public void testToArray1_BadArg() {
1554	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1554	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1555		try {
1556		q.toArray(new String[10]);
1557		shouldThrow();
1558		} catch (ArrayStoreException success) {}
1559		}
1560
1355	–
1561		/**
1562		* iterator iterates through all elements
1563		*/
1564		public void testIterator() throws InterruptedException {
1565	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1566	<	Iterator it = q.iterator();
1567	<	while (it.hasNext()) {
1568	<	assertEquals(it.next(), q.take());
1569	<	}
1565	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1566	>	Iterator<? extends Item> it = q.iterator();
1567	>	int i;
1568	>	for (i = 0; it.hasNext(); i++)
1569	>	mustContain(q, it.next());
1570	>	mustEqual(i, SIZE);
1571	>	assertIteratorExhausted(it);
1572	>
1573	>	it = q.iterator();
1574	>	for (i = 0; it.hasNext(); i++)
1575	>	mustEqual(it.next(), q.take());
1576	>	mustEqual(i, SIZE);
1577	>	assertIteratorExhausted(it);
1578	>	}
1579	>
1580	>	/**
1581	>	* iterator of empty collection has no elements
1582	>	*/
1583	>	public void testEmptyIterator() {
1584	>	Deque<Item> c = new LinkedBlockingDeque<>();
1585	>	assertIteratorExhausted(c.iterator());
1586	>	assertIteratorExhausted(c.descendingIterator());
1587		}
1588
1589		/**
1590		* iterator.remove removes current element
1591		*/
1592		public void testIteratorRemove() {
1593	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(3);
1593	>	final LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(3);
1594		q.add(two);
1595		q.add(one);
1596		q.add(three);
1597
1598	<	Iterator it = q.iterator();
1598	>	Iterator<? extends Item> it = q.iterator();
1599		it.next();
1600		it.remove();
1601
#	Line 1383 | Line 1605 | public class LinkedBlockingDequeTest ext
1605		assertFalse(it.hasNext());
1606		}
1607
1386	–
1608		/**
1609		* iterator ordering is FIFO
1610		*/
1611		public void testIteratorOrdering() {
1612	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(3);
1612	>	final LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(3);
1613		q.add(one);
1614		q.add(two);
1615		q.add(three);
1616	<	assertEquals(0, q.remainingCapacity());
1616	>	mustEqual(0, q.remainingCapacity());
1617		int k = 0;
1618	<	for (Iterator it = q.iterator(); it.hasNext();) {
1619	<	assertEquals(++k, it.next());
1618	>	for (Iterator<? extends Item> it = q.iterator(); it.hasNext();) {
1619	>	mustEqual(++k, it.next());
1620		}
1621	<	assertEquals(3, k);
1621	>	mustEqual(3, k);
1622		}
1623
1624		/**
1625		* Modifications do not cause iterators to fail
1626		*/
1627		public void testWeaklyConsistentIteration() {
1628	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(3);
1628	>	final LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(3);
1629		q.add(one);
1630		q.add(two);
1631		q.add(three);
1632	<	for (Iterator it = q.iterator(); it.hasNext();) {
1632	>	for (Iterator<? extends Item> it = q.iterator(); it.hasNext();) {
1633		q.remove();
1634		it.next();
1635		}
1636	<	assertEquals(0, q.size());
1636	>	mustEqual(0, q.size());
1637		}
1638
1418	–
1639		/**
1640		* Descending iterator iterates through all elements
1641		*/
1642		public void testDescendingIterator() {
1643	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1643	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1644		int i = 0;
1645	<	Iterator it = q.descendingIterator();
1645	>	Iterator<? extends Item> it = q.descendingIterator();
1646		while (it.hasNext()) {
1647	<	assertTrue(q.contains(it.next()));
1647	>	mustContain(q, it.next());
1648		++i;
1649		}
1650	<	assertEquals(i, SIZE);
1650	>	mustEqual(i, SIZE);
1651		assertFalse(it.hasNext());
1652		try {
1653		it.next();
#	Line 1439 | Line 1659 | public class LinkedBlockingDequeTest ext
1659		* Descending iterator ordering is reverse FIFO
1660		*/
1661		public void testDescendingIteratorOrdering() {
1662	<	final LinkedBlockingDeque q = new LinkedBlockingDeque();
1662	>	final LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>();
1663		for (int iters = 0; iters < 100; ++iters) {
1664	<	q.add(new Integer(3));
1665	<	q.add(new Integer(2));
1666	<	q.add(new Integer(1));
1664	>	mustAdd(q, three);
1665	>	mustAdd(q, two);
1666	>	mustAdd(q, one);
1667	>
1668		int k = 0;
1669	<	for (Iterator it = q.descendingIterator(); it.hasNext();) {
1670	<	assertEquals(++k, it.next());
1669	>	for (Iterator<? extends Item> it = q.descendingIterator(); it.hasNext();) {
1670	>	mustEqual(++k, it.next());
1671		}
1672
1673	<	assertEquals(3, k);
1673	>	mustEqual(3, k);
1674		q.remove();
1675		q.remove();
1676		q.remove();
#	Line 1460 | Line 1681 | public class LinkedBlockingDequeTest ext
1681		* descendingIterator.remove removes current element
1682		*/
1683		public void testDescendingIteratorRemove() {
1684	<	final LinkedBlockingDeque q = new LinkedBlockingDeque();
1684	>	final LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>();
1685		for (int iters = 0; iters < 100; ++iters) {
1686	<	q.add(new Integer(3));
1687	<	q.add(new Integer(2));
1688	<	q.add(new Integer(1));
1689	<	Iterator it = q.descendingIterator();
1690	<	assertEquals(it.next(), new Integer(1));
1686	>	mustAdd(q, three);
1687	>	mustAdd(q, two);
1688	>	mustAdd(q, one);
1689	>	Iterator<? extends Item> it = q.descendingIterator();
1690	>	mustEqual(it.next(), one);
1691		it.remove();
1692	<	assertEquals(it.next(), new Integer(2));
1692	>	mustEqual(it.next(), two);
1693		it = q.descendingIterator();
1694	<	assertEquals(it.next(), new Integer(2));
1695	<	assertEquals(it.next(), new Integer(3));
1694	>	mustEqual(it.next(), two);
1695	>	mustEqual(it.next(), three);
1696		it.remove();
1697		assertFalse(it.hasNext());
1698		q.remove();
1699		}
1700		}
1701
1481	–
1702		/**
1703		* toString contains toStrings of elements
1704		*/
1705		public void testToString() {
1706	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1706	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1707		String s = q.toString();
1708		for (int i = 0; i < SIZE; ++i) {
1709	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
1709	>	assertTrue(s.contains(String.valueOf(i)));
1710		}
1711		}
1712
1493	–
1713		/**
1714		* offer transfers elements across Executor tasks
1715		*/
1716		public void testOfferInExecutor() {
1717	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
1717	>	final LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(2);
1718		q.add(one);
1719		q.add(two);
1720	<	ExecutorService executor = Executors.newFixedThreadPool(2);
1721	<	executor.execute(new CheckedRunnable() {
1722	<	public void realRun() throws InterruptedException {
1723	<	assertFalse(q.offer(three));
1724	<	assertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS));
1725	<	assertEquals(0, q.remainingCapacity());
1726	<	}});
1727	<
1728	<	executor.execute(new CheckedRunnable() {
1729	<	public void realRun() throws InterruptedException {
1730	<	delay(SMALL_DELAY_MS);
1731	<	assertSame(one, q.take());
1732	<	}});
1733	<
1734	<	joinPool(executor);
1720	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
1721	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
1722	>	try (PoolCleaner cleaner = cleaner(executor)) {
1723	>	executor.execute(new CheckedRunnable() {
1724	>	public void realRun() throws InterruptedException {
1725	>	assertFalse(q.offer(three));
1726	>	threadsStarted.await();
1727	>	assertTrue(q.offer(three, LONG_DELAY_MS, MILLISECONDS));
1728	>	mustEqual(0, q.remainingCapacity());
1729	>	}});
1730	>
1731	>	executor.execute(new CheckedRunnable() {
1732	>	public void realRun() throws InterruptedException {
1733	>	threadsStarted.await();
1734	>	assertSame(one, q.take());
1735	>	}});
1736	>	}
1737		}
1738
1739		/**
1740	<	* poll retrieves elements across Executor threads
1740	>	* timed poll retrieves elements across Executor threads
1741		*/
1742		public void testPollInExecutor() {
1743	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
1744	<	ExecutorService executor = Executors.newFixedThreadPool(2);
1745	<	executor.execute(new CheckedRunnable() {
1746	<	public void realRun() throws InterruptedException {
1747	<	assertNull(q.poll());
1748	<	assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
1749	<	assertTrue(q.isEmpty());
1750	<	}});
1751	<
1752	<	executor.execute(new CheckedRunnable() {
1753	<	public void realRun() throws InterruptedException {
1754	<	delay(SMALL_DELAY_MS);
1755	<	q.put(one);
1756	<	}});
1757	<
1758	<	joinPool(executor);
1743	>	final LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(2);
1744	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
1745	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
1746	>	try (PoolCleaner cleaner = cleaner(executor)) {
1747	>	executor.execute(new CheckedRunnable() {
1748	>	public void realRun() throws InterruptedException {
1749	>	assertNull(q.poll());
1750	>	threadsStarted.await();
1751	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
1752	>	checkEmpty(q);
1753	>	}});
1754	>
1755	>	executor.execute(new CheckedRunnable() {
1756	>	public void realRun() throws InterruptedException {
1757	>	threadsStarted.await();
1758	>	q.put(one);
1759	>	}});
1760	>	}
1761		}
1762
1763		/**
1764	<	* A deserialized serialized deque has same elements in same order
1764	>	* A deserialized/reserialized deque has same elements in same order
1765		*/
1766		public void testSerialization() throws Exception {
1767	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1768	<
1546	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1547	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
1548	<	out.writeObject(q);
1549	<	out.close();
1767	>	Queue<Item> x = populatedDeque(SIZE);
1768	>	Queue<Item> y = serialClone(x);
1769
1770	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
1771	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
1772	<	LinkedBlockingDeque r = (LinkedBlockingDeque)in.readObject();
1773	<	assertEquals(q.size(), r.size());
1774	<	while (!q.isEmpty())
1775	<	assertEquals(q.remove(), r.remove());
1776	<	}
1777	<
1778	<	/**
1560	<	* drainTo(null) throws NPE
1561	<	*/
1562	<	public void testDrainToNull() {
1563	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1564	<	try {
1565	<	q.drainTo(null);
1566	<	shouldThrow();
1567	<	} catch (NullPointerException success) {}
1568	<	}
1569	<
1570	<	/**
1571	<	* drainTo(this) throws IAE
1572	<	*/
1573	<	public void testDrainToSelf() {
1574	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1575	<	try {
1576	<	q.drainTo(q);
1577	<	shouldThrow();
1578	<	} catch (IllegalArgumentException success) {}
1770	>	assertNotSame(y, x);
1771	>	mustEqual(x.size(), y.size());
1772	>	mustEqual(x.toString(), y.toString());
1773	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
1774	>	while (!x.isEmpty()) {
1775	>	assertFalse(y.isEmpty());
1776	>	mustEqual(x.remove(), y.remove());
1777	>	}
1778	>	assertTrue(y.isEmpty());
1779		}
1780
1781		/**
1782		* drainTo(c) empties deque into another collection c
1783		*/
1784		public void testDrainTo() {
1785	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1786	<	ArrayList l = new ArrayList();
1785	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1786	>	ArrayList<Item> l = new ArrayList<>();
1787		q.drainTo(l);
1788	<	assertEquals(q.size(), 0);
1789	<	assertEquals(l.size(), SIZE);
1788	>	mustEqual(0, q.size());
1789	>	mustEqual(SIZE, l.size());
1790		for (int i = 0; i < SIZE; ++i)
1791	<	assertEquals(l.get(i), new Integer(i));
1791	>	mustEqual(l.get(i), i);
1792		q.add(zero);
1793		q.add(one);
1794		assertFalse(q.isEmpty());
1795	<	assertTrue(q.contains(zero));
1796	<	assertTrue(q.contains(one));
1795	>	mustContain(q, zero);
1796	>	mustContain(q, one);
1797		l.clear();
1798		q.drainTo(l);
1799	<	assertEquals(q.size(), 0);
1800	<	assertEquals(l.size(), 2);
1799	>	mustEqual(0, q.size());
1800	>	mustEqual(2, l.size());
1801		for (int i = 0; i < 2; ++i)
1802	<	assertEquals(l.get(i), new Integer(i));
1802	>	mustEqual(l.get(i), i);
1803		}
1804
1805		/**
1806		* drainTo empties full deque, unblocking a waiting put.
1807		*/
1808		public void testDrainToWithActivePut() throws InterruptedException {
1809	<	final LinkedBlockingDeque q = populatedDeque(SIZE);
1809	>	final LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1810		Thread t = new Thread(new CheckedRunnable() {
1811		public void realRun() throws InterruptedException {
1812	<	q.put(new Integer(SIZE+1));
1812	>	q.put(new Item(SIZE + 1));
1813		}});
1814
1815		t.start();
1816	<	ArrayList l = new ArrayList();
1816	>	ArrayList<Item> l = new ArrayList<>();
1817		q.drainTo(l);
1818		assertTrue(l.size() >= SIZE);
1819		for (int i = 0; i < SIZE; ++i)
1820	<	assertEquals(l.get(i), new Integer(i));
1820	>	mustEqual(l.get(i), i);
1821		t.join();
1822		assertTrue(q.size() + l.size() >= SIZE);
1823		}
1824
1825		/**
1626	–	* drainTo(null, n) throws NPE
1627	–	*/
1628	–	public void testDrainToNullN() {
1629	–	LinkedBlockingDeque q = populatedDeque(SIZE);
1630	–	try {
1631	–	q.drainTo(null, 0);
1632	–	shouldThrow();
1633	–	} catch (NullPointerException success) {}
1634	–	}
1635	–
1636	–	/**
1637	–	* drainTo(this, n) throws IAE
1638	–	*/
1639	–	public void testDrainToSelfN() {
1640	–	LinkedBlockingDeque q = populatedDeque(SIZE);
1641	–	try {
1642	–	q.drainTo(q, 0);
1643	–	shouldThrow();
1644	–	} catch (IllegalArgumentException success) {}
1645	–	}
1646	–
1647	–	/**
1826		* drainTo(c, n) empties first min(n, size) elements of queue into c
1827		*/
1828		public void testDrainToN() {
1829	<	LinkedBlockingDeque q = new LinkedBlockingDeque();
1829	>	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>();
1830		for (int i = 0; i < SIZE + 2; ++i) {
1831		for (int j = 0; j < SIZE; j++)
1832	<	assertTrue(q.offer(new Integer(j)));
1833	<	ArrayList l = new ArrayList();
1832	>	mustOffer(q, j);
1833	>	ArrayList<Item> l = new ArrayList<>();
1834		q.drainTo(l, i);
1835		int k = (i < SIZE) ? i : SIZE;
1836	<	assertEquals(l.size(), k);
1837	<	assertEquals(q.size(), SIZE-k);
1836	>	mustEqual(k, l.size());
1837	>	mustEqual(SIZE - k, q.size());
1838		for (int j = 0; j < k; ++j)
1839	<	assertEquals(l.get(j), new Integer(j));
1840	<	while (q.poll() != null) ;
1839	>	mustEqual(l.get(j), j);
1840	>	do {} while (q.poll() != null);
1841	>	}
1842	>	}
1843	>
1844	>	/**
1845	>	* remove(null), contains(null) always return false
1846	>	*/
1847	>	public void testNeverContainsNull() {
1848	>	Deque<?>[] qs = {
1849	>	new LinkedBlockingDeque<>(),
1850	>	populatedDeque(2),
1851	>	};
1852	>
1853	>	for (Deque<?> q : qs) {
1854	>	assertFalse(q.contains(null));
1855	>	assertFalse(q.remove(null));
1856	>	assertFalse(q.removeFirstOccurrence(null));
1857	>	assertFalse(q.removeLastOccurrence(null));
1858		}
1859		}
1860

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