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Comparing jsr166/src/test/tck/LinkedBlockingDequeTest.java (file contents):
Revision 1.4 by jsr166, Mon Nov 2 20:28:31 2009 UTC vs.
Revision 1.89 by jsr166, Wed Jan 27 01:57:24 2021 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		*/
6
7	<	import junit.framework.*;
8	<	import java.util.*;
9	<	import java.util.concurrent.*;
10	<	import java.io.*;
7	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
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	+
27	+	public static class Unbounded extends BlockingQueueTest {
28	+	protected BlockingQueue emptyCollection() {
29	+	return new LinkedBlockingDeque();
30	+	}
31	+	}
32	+
33	+	public static class Bounded extends BlockingQueueTest {
34	+	protected BlockingQueue emptyCollection() {
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	<	return new TestSuite(LinkedBlockingDequeTest.class);
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(),
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 populatedDeque(int n) {
62	<	LinkedBlockingDeque q = new LinkedBlockingDeque(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)));
64	>	for (int i = 0; i < n; 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 37 | 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 51 | 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	<	try {
108	<	LinkedBlockingDeque q = new LinkedBlockingDeque();
107	>	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>();
108	>	try {
109		q.offerFirst(null);
110		shouldThrow();
111	<	} catch (NullPointerException success) {
112	<	}
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
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, ((Integer)q.pollFirst()).intValue());
149	>	mustEqual(i, q.pollFirst());
150		}
151	<	assertNull(q.pollFirst());
151	>	assertNull(q.pollFirst());
152		}
153
154		/**
155	<	*  pollLast succeeds unless empty
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, ((Integer)q.pollLast()).intValue());
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());
162	>	assertNull(q.pollLast());
163		}
164
165		/**
166	<	*  peekFirst returns next element, or null if empty
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, ((Integer)q.peekFirst()).intValue());
172	<	q.pollFirst();
171	>	mustEqual(i, q.peekFirst());
172	>	mustEqual(i, q.pollFirst());
173		assertTrue(q.peekFirst() == null ||
174	<	i != ((Integer)q.peekFirst()).intValue());
174	>	!q.peekFirst().equals(i));
175		}
176	<	assertNull(q.peekFirst());
176	>	assertNull(q.peekFirst());
177		}
178
179		/**
180	<	*  peek returns next element, or null if empty
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, ((Integer)q.peek()).intValue());
186	<	q.pollFirst();
185	>	mustEqual(i, q.peek());
186	>	mustEqual(i, q.pollFirst());
187		assertTrue(q.peek() == null ||
188	<	i != ((Integer)q.peek()).intValue());
188	>	!q.peek().equals(i));
189		}
190	<	assertNull(q.peek());
190	>	assertNull(q.peek());
191		}
192
193		/**
194	<	*  peekLast returns next element, or null if empty
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, ((Integer)q.peekLast()).intValue());
200	<	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	<	i != ((Integer)q.peekLast()).intValue());
202	>	!q.peekLast().equals(i));
203		}
204	<	assertNull(q.peekLast());
204	>	assertNull(q.peekLast());
205		}
206
207		/**
208	<	* getFirst returns next getFirst, or throws NSEE if empty
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, ((Integer)q.getFirst()).intValue());
214	<	q.pollFirst();
213	>	mustEqual(i, q.getFirst());
214	>	mustEqual(i, q.pollFirst());
215		}
216		try {
217		q.getFirst();
218		shouldThrow();
219	<	}
220	<	catch (NoSuchElementException success) {}
219	>	} catch (NoSuchElementException success) {}
220	>	assertNull(q.peekFirst());
221		}
222
223		/**
224	<	*  getLast returns next element, or throws NSEE if empty
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, ((Integer)q.getLast()).intValue());
230	<	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();
234		shouldThrow();
235	<	}
236	<	catch (NoSuchElementException success) {}
189	<	assertNull(q.peekLast());
235	>	} catch (NoSuchElementException success) {}
236	>	assertNull(q.peekLast());
237		}
238
239		/**
240	<	*  removeFirst removes next element, or throws NSEE if empty
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, ((Integer)q.removeFirst()).intValue());
245	>	mustEqual(i, q.removeFirst());
246		}
247		try {
248		q.removeFirst();
249		shouldThrow();
250	<	} catch (NoSuchElementException success){
251	<	}
250	>	} catch (NoSuchElementException success) {}
251	>	assertNull(q.peekFirst());
252	>	}
253	>
254	>	/**
255	>	* removeLast() removes last element, or throws NSEE if empty
256	>	*/
257	>	public void testRemoveLast() {
258	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
259	>	for (int i = SIZE - 1; i >= 0; --i) {
260	>	mustEqual(i, q.removeLast());
261	>	}
262	>	try {
263	>	q.removeLast();
264	>	shouldThrow();
265	>	} catch (NoSuchElementException success) {}
266	>	assertNull(q.peekLast());
267		}
268
269		/**
270	<	*  remove removes next element, or throws NSEE if empty
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, ((Integer)q.remove()).intValue());
275	>	mustEqual(i, q.remove());
276		}
277		try {
278		q.remove();
279		shouldThrow();
280	<	} catch (NoSuchElementException success){
219	<	}
280	>	} catch (NoSuchElementException success) {}
281		}
282
283		/**
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 238 | 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 253 | 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	<	assertEquals(four,q.peekFirst());
319	>	q.addFirst(four);
320	>	assertSame(four, q.peekFirst());
321		}
322
323		/**
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	<	assertEquals(four,q.peekLast());
329	>	q.addLast(four);
330	>	assertSame(four, q.peekLast());
331		}
332
272	–
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	<	}
290	<	catch (IllegalArgumentException success) {}
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	<	}
301	<	catch (NullPointerException success) {}
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];
310	<	LinkedBlockingDeque q = new LinkedBlockingDeque(Arrays.asList(ints));
368	>	new LinkedBlockingDeque<Item>(elements);
369		shouldThrow();
370	<	}
313	<	catch (NullPointerException success) {}
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];
322	<	for (int i = 0; i < SIZE-1; ++i)
323	<	ints[i] = new Integer(i);
324	<	LinkedBlockingDeque q = new LinkedBlockingDeque(Arrays.asList(ints));
382	>	new LinkedBlockingDeque<Item>(elements);
383		shouldThrow();
384	<	}
327	<	catch (NullPointerException success) {}
384	>	} catch (NullPointerException success) {}
385		}
386
387		/**
388		* Deque contains all elements of collection used to initialize
389		*/
390		public void testConstructor6() {
391	<	try {
392	<	Integer[] ints = new Integer[SIZE];
393	<	for (int i = 0; i < SIZE; ++i)
394	<	ints[i] = new Integer(i);
338	<	LinkedBlockingDeque q = new LinkedBlockingDeque(Arrays.asList(ints));
339	<	for (int i = 0; i < SIZE; ++i)
340	<	assertEquals(ints[i], q.poll());
341	<	}
342	<	finally {}
391	>	Item[] items = defaultItems;
392	>	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(Arrays.asList(items));
393	>	for (int i = 0; i < SIZE; ++i)
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 361 | 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		/**
378	–	* offer(null) throws NPE
379	–	*/
380	–	public void testOfferNull() {
381	–	try {
382	–	LinkedBlockingDeque q = new LinkedBlockingDeque(1);
383	–	q.offer(null);
384	–	shouldThrow();
385	–	} catch (NullPointerException success) { }
386	–	}
387	–
388	–	/**
389	–	* add(null) throws NPE
390	–	*/
391	–	public void testAddNull() {
392	–	try {
393	–	LinkedBlockingDeque q = new LinkedBlockingDeque(1);
394	–	q.add(null);
395	–	shouldThrow();
396	–	} catch (NullPointerException success) { }
397	–	}
398	–
399	–	/**
430		* push(null) throws NPE
431		*/
432		public void testPushNull() {
433	<	try {
434	<	LinkedBlockingDeque q = new LinkedBlockingDeque(1);
433	>	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(1);
434	>	try {
435		q.push(null);
436		shouldThrow();
437	<	} catch (NullPointerException success) { }
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	<	try {
445	<	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
446	<	for (int i = 0; i < SIZE; ++i) {
447	<	Integer I = new Integer(i);
448	<	q.push(I);
449	<	assertEquals(I, q.peek());
450	<	}
451	<	assertEquals(0, q.remainingCapacity());
452	<	q.push(new Integer(SIZE));
453	<	} catch (IllegalStateException success){
454	<	}
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	>	q.push(itemFor(SIZE));
453	>	shouldThrow();
454	>	} catch (IllegalStateException success) {}
455		}
456
457		/**
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	<	assertEquals(four,q.peekFirst());
463	>	q.push(four);
464	>	assertSame(four, q.peekFirst());
465		}
466
437	–
467		/**
468	<	*  pop removes next element, or throws NSEE if empty
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, ((Integer)q.pop()).intValue());
473	>	mustEqual(i, q.pop());
474		}
475		try {
476		q.pop();
477		shouldThrow();
478	<	} catch (NoSuchElementException success){
450	<	}
478	>	} catch (NoSuchElementException success) {}
479		}
480
453	–
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	<	try {
495	<	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
496	<	for (int i = 0; i < SIZE; ++i) {
497	<	assertTrue(q.add(new Integer(i)));
471	<	}
472	<	assertEquals(0, q.remainingCapacity());
473	<	q.add(new Integer(SIZE));
474	<	} catch (IllegalStateException success){
475	<	}
476	<	}
477	<
478	<	/**
479	<	* addAll(null) throws NPE
480	<	*/
481	<	public void testAddAll1() {
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(1);
484	<	q.addAll(null);
499	>	q.add(itemFor(SIZE));
500		shouldThrow();
501	<	}
487	<	catch (NullPointerException success) {}
501	>	} catch (IllegalStateException success) {}
502		}
503
504		/**
505	<	* addAll(this) throws IAE
505	>	* addAll(this) throws IllegalArgumentException
506		*/
507		public void testAddAllSelf() {
508	+	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
509		try {
495	–	LinkedBlockingDeque q = populatedDeque(SIZE);
510		q.addAll(q);
511		shouldThrow();
512	<	}
499	<	catch (IllegalArgumentException success) {}
512	>	} catch (IllegalArgumentException success) {}
513		}
514
515		/**
503	–	* addAll of a collection with null elements throws NPE
504	–	*/
505	–	public void testAddAll2() {
506	–	try {
507	–	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
508	–	Integer[] ints = new Integer[SIZE];
509	–	q.addAll(Arrays.asList(ints));
510	–	shouldThrow();
511	–	}
512	–	catch (NullPointerException success) {}
513	–	}
514	–	/**
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);
521	<	Integer[] ints = new Integer[SIZE];
522	<	for (int i = 0; i < SIZE-1; ++i)
523	<	ints[i] = new Integer(i);
524	<	q.addAll(Arrays.asList(ints));
524	>	q.addAll(elements);
525		shouldThrow();
526	<	}
527	<	catch (NullPointerException success) {}
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);
535	<	Integer[] ints = new Integer[SIZE];
536	<	for (int i = 0; i < SIZE; ++i)
537	<	ints[i] = new Integer(i);
538	<	q.addAll(Arrays.asList(ints));
537	>	q.addAll(elements);
538		shouldThrow();
539	<	}
541	<	catch (IllegalStateException success) {}
539	>	} catch (IllegalStateException success) {}
540		}
541	+
542		/**
543		* Deque contains all elements, in traversal order, of successful addAll
544		*/
545		public void testAddAll5() {
546	<	try {
547	<	Integer[] empty = new Integer[0];
548	<	Integer[] ints = new Integer[SIZE];
549	<	for (int i = 0; i < SIZE; ++i)
550	<	ints[i] = new Integer(i);
551	<	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
552	<	assertFalse(q.addAll(Arrays.asList(empty)));
554	<	assertTrue(q.addAll(Arrays.asList(ints)));
555	<	for (int i = 0; i < SIZE; ++i)
556	<	assertEquals(ints[i], q.poll());
557	<	}
558	<	finally {}
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(items)));
551	>	for (int i = 0; i < SIZE; ++i)
552	>	mustEqual(items[i], q.poll());
553		}
554
561	–
562	–	/**
563	–	* put(null) throws NPE
564	–	*/
565	–	public void testPutNull() {
566	–	try {
567	–	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
568	–	q.put(null);
569	–	shouldThrow();
570	–	}
571	–	catch (NullPointerException success){
572	–	}
573	–	catch (InterruptedException ie) {
574	–	unexpectedException();
575	–	}
576	–	}
577	–
555		/**
556		* all elements successfully put are contained
557		*/
558	<	public void testPut() {
559	<	try {
560	<	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
561	<	for (int i = 0; i < SIZE; ++i) {
562	<	Integer I = new Integer(i);
563	<	q.put(I);
587	<	assertTrue(q.contains(I));
588	<	}
589	<	assertEquals(0, q.remainingCapacity());
590	<	}
591	<	catch (InterruptedException ie) {
592	<	unexpectedException();
558	>	public void testPut() throws InterruptedException {
559	>	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(SIZE);
560	>	for (int i = 0; i < SIZE; ++i) {
561	>	Item x = itemFor(i);
562	>	q.put(x);
563	>	mustContain(q, x);
564		}
565	+	mustEqual(0, q.remainingCapacity());
566		}
567
568		/**
569		* put blocks interruptibly if full
570		*/
571	<	public void testBlockingPut() {
572	<	Thread t = new Thread(new Runnable() {
573	<	public void run() {
574	<	int added = 0;
575	<	try {
576	<	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
577	<	for (int i = 0; i < SIZE; ++i) {
578	<	q.put(new Integer(i));
579	<	++added;
580	<	}
581	<	q.put(new Integer(SIZE));
582	<	threadShouldThrow();
583	<	} catch (InterruptedException ie){
584	<	threadAssertEquals(added, SIZE);
585	<	}
586	<	}});
587	<	t.start();
588	<	try {
589	<	Thread.sleep(SHORT_DELAY_MS);
590	<	t.interrupt();
591	<	t.join();
592	<	}
593	<	catch (InterruptedException ie) {
594	<	unexpectedException();
595	<	}
571	>	public void testBlockingPut() throws InterruptedException {
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(itemFor(i));
578	>	mustEqual(SIZE, q.size());
579	>	mustEqual(0, q.remainingCapacity());
580	>
581	>	Thread.currentThread().interrupt();
582	>	try {
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	>	await(pleaseInterrupt);
597	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
598	>	t.interrupt();
599	>	awaitTermination(t);
600	>	mustEqual(SIZE, q.size());
601	>	mustEqual(0, q.remainingCapacity());
602		}
603
604		/**
605	<	* put blocks waiting for take when full
606	<	*/
607	<	public void testPutWithTake() {
608	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
609	<	Thread t = new Thread(new Runnable() {
610	<	public void run() {
611	<	int added = 0;
612	<	try {
613	<	q.put(new Object());
614	<	++added;
615	<	q.put(new Object());
616	<	++added;
617	<	q.put(new Object());
618	<	++added;
619	<	q.put(new Object());
620	<	++added;
621	<	threadShouldThrow();
622	<	} catch (InterruptedException e){
623	<	threadAssertTrue(added >= 2);
624	<	}
625	<	}
626	<	});
627	<	try {
628	<	t.start();
629	<	Thread.sleep(SHORT_DELAY_MS);
630	<	q.take();
631	<	t.interrupt();
632	<	t.join();
633	<	} catch (Exception e){
634	<	unexpectedException();
635	<	}
605	>	* put blocks interruptibly waiting for take when full
606	>	*/
607	>	public void testPutWithTake() throws InterruptedException {
608	>	final int capacity = 2;
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; 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(ninetynine);
629	>	shouldThrow();
630	>	} catch (InterruptedException success) {}
631	>	assertFalse(Thread.interrupted());
632	>	}});
633	>
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	>	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() {
649	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
650	<	Thread t = new Thread(new Runnable() {
651	<	public void run() {
652	<	try {
653	<	q.put(new Object());
654	<	q.put(new Object());
655	<	threadAssertFalse(q.offer(new Object(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
656	<	q.offer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS);
657	<	threadShouldThrow();
658	<	} catch (InterruptedException success){}
659	<	}
660	<	});
661	<
662	<	try {
663	<	t.start();
664	<	Thread.sleep(SMALL_DELAY_MS);
665	<	t.interrupt();
666	<	t.join();
667	<	} catch (Exception e){
668	<	unexpectedException();
669	<	}
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(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(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	>	await(pleaseInterrupt);
676	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
677	>	t.interrupt();
678	>	awaitTermination(t);
679		}
680
681		/**
682		* take retrieves elements in FIFO order
683		*/
684	<	public void testTake() {
685	<	try {
686	<	LinkedBlockingDeque q = populatedDeque(SIZE);
687	<	for (int i = 0; i < SIZE; ++i) {
694	<	assertEquals(i, ((Integer)q.take()).intValue());
695	<	}
696	<	} catch (InterruptedException e){
697	<	unexpectedException();
698	<	}
699	<	}
700	<
701	<	/**
702	<	* take blocks interruptibly when empty
703	<	*/
704	<	public void testTakeFromEmpty() {
705	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
706	<	Thread t = new Thread(new Runnable() {
707	<	public void run() {
708	<	try {
709	<	q.take();
710	<	threadShouldThrow();
711	<	} catch (InterruptedException success){ }
712	<	}
713	<	});
714	<	try {
715	<	t.start();
716	<	Thread.sleep(SHORT_DELAY_MS);
717	<	t.interrupt();
718	<	t.join();
719	<	} catch (Exception e){
720	<	unexpectedException();
684	>	public void testTake() throws InterruptedException {
685	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
686	>	for (int i = 0; i < SIZE; ++i) {
687	>	mustEqual(i, q.take());
688		}
689		}
690
691		/**
692	<	* Take removes existing elements until empty, then blocks interruptibly
693	<	*/
694	<	public void testBlockingTake() {
695	<	Thread t = new Thread(new Runnable() {
696	<	public void run() {
697	<	try {
698	<	LinkedBlockingDeque q = populatedDeque(SIZE);
699	<	for (int i = 0; i < SIZE; ++i) {
700	<	assertEquals(i, ((Integer)q.take()).intValue());
701	<	}
702	<	q.take();
703	<	threadShouldThrow();
704	<	} catch (InterruptedException success){
705	<	}
706	<	}});
740	<	t.start();
741	<	try {
742	<	Thread.sleep(SHORT_DELAY_MS);
743	<	t.interrupt();
744	<	t.join();
745	<	}
746	<	catch (InterruptedException ie) {
747	<	unexpectedException();
748	<	}
749	<	}
692	>	* take removes existing elements until empty, then blocks interruptibly
693	>	*/
694	>	public void testBlockingTake() throws InterruptedException {
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++) 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	+	await(pleaseInterrupt);
717	+	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
718	+	t.interrupt();
719	+	awaitTermination(t);
720	+	}
721
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, ((Integer)q.poll()).intValue());
728	>	mustEqual(i, q.poll());
729		}
730	<	assertNull(q.poll());
730	>	assertNull(q.poll());
731		}
732
733		/**
734		* timed poll with zero timeout succeeds when non-empty, else times out
735		*/
736	<	public void testTimedPoll0() {
737	<	try {
738	<	LinkedBlockingDeque q = populatedDeque(SIZE);
739	<	for (int i = 0; i < SIZE; ++i) {
740	<	assertEquals(i, ((Integer)q.poll(0, TimeUnit.MILLISECONDS)).intValue());
741	<	}
772	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
773	<	} catch (InterruptedException e){
774	<	unexpectedException();
775	<	}
736	>	public void testTimedPoll0() throws InterruptedException {
737	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
738	>	for (int i = 0; i < SIZE; ++i) {
739	>	mustEqual(i, q.poll(0, MILLISECONDS));
740	>	}
741	>	assertNull(q.poll(0, MILLISECONDS));
742		}
743
744		/**
745		* timed poll with nonzero timeout succeeds when non-empty, else times out
746		*/
747	<	public void testTimedPoll() {
748	<	try {
749	<	LinkedBlockingDeque q = populatedDeque(SIZE);
750	<	for (int i = 0; i < SIZE; ++i) {
751	<	assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
752	<	}
753	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
754	<	} catch (InterruptedException e){
755	<	unexpectedException();
756	<	}
747	>	public void testTimedPoll() throws InterruptedException {
748	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
749	>	for (int i = 0; i < SIZE; ++i) {
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		/**
761		* Interrupted timed poll throws InterruptedException instead of
762		* returning timeout status
763		*/
764	<	public void testInterruptedTimedPoll() {
765	<	Thread t = new Thread(new Runnable() {
766	<	public void run() {
767	<	try {
768	<	LinkedBlockingDeque q = populatedDeque(SIZE);
769	<	for (int i = 0; i < SIZE; ++i) {
770	<	threadAssertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
804	<	}
805	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
806	<	} catch (InterruptedException success){
807	<	}
808	<	}});
809	<	t.start();
810	<	try {
811	<	Thread.sleep(SHORT_DELAY_MS);
812	<	t.interrupt();
813	<	t.join();
814	<	}
815	<	catch (InterruptedException ie) {
816	<	unexpectedException();
817	<	}
818	<	}
764	>	public void testInterruptedTimedPoll() throws InterruptedException {
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	>	mustEqual(i, q.poll(LONG_DELAY_MS, MILLISECONDS));
771
772	<	/**
773	<	*  timed poll before a delayed offer fails; after offer succeeds;
774	<	*  on interruption throws
775	<	*/
776	<	public void testTimedPollWithOffer() {
777	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
826	<	Thread t = new Thread(new Runnable() {
827	<	public void run() {
828	<	try {
829	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
830	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
831	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
832	<	threadShouldThrow();
833	<	} catch (InterruptedException success) { }
834	<	}
835	<	});
836	<	try {
837	<	t.start();
838	<	Thread.sleep(SMALL_DELAY_MS);
839	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
840	<	t.interrupt();
841	<	t.join();
842	<	} catch (Exception e){
843	<	unexpectedException();
844	<	}
845	<	}
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	+	await(pleaseInterrupt);
788	+	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
789	+	t.interrupt();
790	+	awaitTermination(t);
791	+	checkEmpty(q);
792	+	}
793
794		/**
795		* putFirst(null) throws NPE
796		*/
797	<	public void testPutFirstNull() {
798	<	try {
799	<	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
797	>	public void testPutFirstNull() throws InterruptedException {
798	>	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(SIZE);
799	>	try {
800		q.putFirst(null);
801		shouldThrow();
802	<	}
803	<	catch (NullPointerException success){
858	<	}
859	<	catch (InterruptedException ie) {
860	<	unexpectedException();
861	<	}
862	<	}
802	>	} catch (NullPointerException success) {}
803	>	}
804
805		/**
806		* all elements successfully putFirst are contained
807		*/
808	<	public void testPutFirst() {
809	<	try {
810	<	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
811	<	for (int i = 0; i < SIZE; ++i) {
812	<	Integer I = new Integer(i);
813	<	q.putFirst(I);
873	<	assertTrue(q.contains(I));
874	<	}
875	<	assertEquals(0, q.remainingCapacity());
876	<	}
877	<	catch (InterruptedException ie) {
878	<	unexpectedException();
808	>	public void testPutFirst() throws InterruptedException {
809	>	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(SIZE);
810	>	for (int i = 0; i < SIZE; ++i) {
811	>	Item x = itemFor(i);
812	>	q.putFirst(x);
813	>	mustContain(q, x);
814		}
815	+	mustEqual(0, q.remainingCapacity());
816		}
817
818		/**
819		* putFirst blocks interruptibly if full
820		*/
821	<	public void testBlockingPutFirst() {
822	<	Thread t = new Thread(new Runnable() {
823	<	public void run() {
824	<	int added = 0;
825	<	try {
826	<	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
827	<	for (int i = 0; i < SIZE; ++i) {
828	<	q.putFirst(new Integer(i));
829	<	++added;
830	<	}
831	<	q.putFirst(new Integer(SIZE));
832	<	threadShouldThrow();
833	<	} catch (InterruptedException ie){
834	<	threadAssertEquals(added, SIZE);
835	<	}
836	<	}});
837	<	t.start();
838	<	try {
839	<	Thread.sleep(SHORT_DELAY_MS);
840	<	t.interrupt();
841	<	t.join();
842	<	}
843	<	catch (InterruptedException ie) {
844	<	unexpectedException();
845	<	}
821	>	public void testBlockingPutFirst() throws InterruptedException {
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(itemFor(i));
828	>	mustEqual(SIZE, q.size());
829	>	mustEqual(0, q.remainingCapacity());
830	>
831	>	Thread.currentThread().interrupt();
832	>	try {
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	>	await(pleaseInterrupt);
847	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
848	>	t.interrupt();
849	>	awaitTermination(t);
850	>	mustEqual(SIZE, q.size());
851	>	mustEqual(0, q.remainingCapacity());
852		}
853
854		/**
855	<	* putFirst blocks waiting for take when full
856	<	*/
857	<	public void testPutFirstWithTake() {
858	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
859	<	Thread t = new Thread(new Runnable() {
860	<	public void run() {
861	<	int added = 0;
862	<	try {
863	<	q.putFirst(new Object());
864	<	++added;
865	<	q.putFirst(new Object());
866	<	++added;
867	<	q.putFirst(new Object());
868	<	++added;
869	<	q.putFirst(new Object());
870	<	++added;
871	<	threadShouldThrow();
872	<	} catch (InterruptedException e){
873	<	threadAssertTrue(added >= 2);
874	<	}
875	<	}
876	<	});
877	<	try {
878	<	t.start();
879	<	Thread.sleep(SHORT_DELAY_MS);
880	<	q.take();
881	<	t.interrupt();
882	<	t.join();
883	<	} catch (Exception e){
884	<	unexpectedException();
885	<	}
855	>	* putFirst blocks interruptibly waiting for take when full
856	>	*/
857	>	public void testPutFirstWithTake() throws InterruptedException {
858	>	final int capacity = 2;
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; i++)
865	>	q.putFirst(itemFor(i));
866	>	pleaseTake.countDown();
867	>	q.putFirst(eightysix);
868	>
869	>	pleaseInterrupt.countDown();
870	>	try {
871	>	q.putFirst(ninetynine);
872	>	shouldThrow();
873	>	} catch (InterruptedException success) {}
874	>	assertFalse(Thread.interrupted());
875	>	}});
876	>
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	>	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() {
892	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
893	<	Thread t = new Thread(new Runnable() {
894	<	public void run() {
895	<	try {
896	<	q.putFirst(new Object());
897	<	q.putFirst(new Object());
898	<	threadAssertFalse(q.offerFirst(new Object(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
899	<	q.offerFirst(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS);
900	<	threadShouldThrow();
901	<	} catch (InterruptedException success){}
902	<	}
903	<	});
904	<
905	<	try {
906	<	t.start();
907	<	Thread.sleep(SMALL_DELAY_MS);
908	<	t.interrupt();
909	<	t.join();
910	<	} catch (Exception e){
911	<	unexpectedException();
912	<	}
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(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(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	>	await(pleaseInterrupt);
919	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
920	>	t.interrupt();
921	>	awaitTermination(t);
922		}
923
924		/**
925		* take retrieves elements in FIFO order
926		*/
927	<	public void testTakeFirst() {
928	<	try {
929	<	LinkedBlockingDeque q = populatedDeque(SIZE);
930	<	for (int i = 0; i < SIZE; ++i) {
931	<	assertEquals(i, ((Integer)q.takeFirst()).intValue());
981	<	}
982	<	} catch (InterruptedException e){
983	<	unexpectedException();
984	<	}
927	>	public void testTakeFirst() throws InterruptedException {
928	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
929	>	for (int i = 0; i < SIZE; ++i) {
930	>	mustEqual(i, q.takeFirst());
931	>	}
932		}
933
934		/**
935	<	* takeFirst blocks interruptibly when empty
936	<	*/
937	<	public void testTakeFirstFromEmpty() {
938	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
939	<	Thread t = new Thread(new Runnable() {
940	<	public void run() {
941	<	try {
942	<	q.takeFirst();
943	<	threadShouldThrow();
944	<	} catch (InterruptedException success){ }
945	<	}
946	<	});
947	<	try {
948	<	t.start();
949	<	Thread.sleep(SHORT_DELAY_MS);
950	<	t.interrupt();
951	<	t.join();
952	<	} catch (Exception e){
953	<	unexpectedException();
1007	<	}
935	>	* takeFirst() blocks interruptibly when empty
936	>	*/
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	>	await(threadStarted);
951	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
952	>	t.interrupt();
953	>	awaitTermination(t);
954		}
955
956		/**
957	<	* TakeFirst removes existing elements until empty, then blocks interruptibly
958	<	*/
959	<	public void testBlockingTakeFirst() {
960	<	Thread t = new Thread(new Runnable() {
961	<	public void run() {
962	<	try {
963	<	LinkedBlockingDeque q = populatedDeque(SIZE);
964	<	for (int i = 0; i < SIZE; ++i) {
965	<	assertEquals(i, ((Integer)q.takeFirst()).intValue());
966	<	}
967	<	q.takeFirst();
968	<	threadShouldThrow();
969	<	} catch (InterruptedException success){
970	<	}
971	<	}});
972	<	t.start();
1027	<	try {
1028	<	Thread.sleep(SHORT_DELAY_MS);
1029	<	t.interrupt();
1030	<	t.join();
1031	<	}
1032	<	catch (InterruptedException ie) {
1033	<	unexpectedException();
1034	<	}
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	+	* 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<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++) 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	+	await(pleaseInterrupt);
1042	+	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
1043	+	t.interrupt();
1044	+	awaitTermination(t);
1045	+	}
1046
1047		/**
1048		* timed pollFirst with zero timeout succeeds when non-empty, else times out
1049		*/
1050	<	public void testTimedPollFirst0() {
1051	<	try {
1052	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1053	<	for (int i = 0; i < SIZE; ++i) {
1054	<	assertEquals(i, ((Integer)q.pollFirst(0, TimeUnit.MILLISECONDS)).intValue());
1055	<	}
1047	<	assertNull(q.pollFirst(0, TimeUnit.MILLISECONDS));
1048	<	} catch (InterruptedException e){
1049	<	unexpectedException();
1050	<	}
1050	>	public void testTimedPollFirst0() throws InterruptedException {
1051	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1052	>	for (int i = 0; i < SIZE; ++i) {
1053	>	mustEqual(i, q.pollFirst(0, MILLISECONDS));
1054	>	}
1055	>	assertNull(q.pollFirst(0, MILLISECONDS));
1056		}
1057
1058		/**
1059		* timed pollFirst with nonzero timeout succeeds when non-empty, else times out
1060		*/
1061	<	public void testTimedPollFirst() {
1062	<	try {
1063	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1064	<	for (int i = 0; i < SIZE; ++i) {
1065	<	assertEquals(i, ((Integer)q.pollFirst(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
1066	<	}
1067	<	assertNull(q.pollFirst(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
1068	<	} catch (InterruptedException e){
1069	<	unexpectedException();
1070	<	}
1061	>	public void testTimedPollFirst() throws InterruptedException {
1062	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1063	>	for (int i = 0; i < SIZE; ++i) {
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		/**
1075		* Interrupted timed pollFirst throws InterruptedException instead of
1076		* returning timeout status
1077		*/
1078	<	public void testInterruptedTimedPollFirst() {
1079	<	Thread t = new Thread(new Runnable() {
1080	<	public void run() {
1081	<	try {
1082	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1083	<	for (int i = 0; i < SIZE; ++i) {
1084	<	threadAssertEquals(i, ((Integer)q.pollFirst(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
1085	<	}
1086	<	threadAssertNull(q.pollFirst(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
1087	<	} catch (InterruptedException success){
1088	<	}
1089	<	}});
1090	<	t.start();
1091	<	try {
1092	<	Thread.sleep(SHORT_DELAY_MS);
1093	<	t.interrupt();
1094	<	t.join();
1095	<	}
1096	<	catch (InterruptedException ie) {
1097	<	unexpectedException();
1098	<	}
1078	>	public void testInterruptedTimedPollFirst() throws InterruptedException {
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	>	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(LONGER_DELAY_MS, MILLISECONDS);
1096	>	shouldThrow();
1097	>	} catch (InterruptedException success) {}
1098	>	assertFalse(Thread.interrupted());
1099	>	}});
1100	>
1101	>	await(pleaseInterrupt);
1102	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
1103	>	t.interrupt();
1104	>	awaitTermination(t);
1105		}
1106
1107		/**
1108	<	*  timed pollFirst before a delayed offerFirst fails; after offerFirst succeeds;
1109	<	*  on interruption throws
1110	<	*/
1111	<	public void testTimedPollFirstWithOfferFirst() {
1112	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
1113	<	Thread t = new Thread(new Runnable() {
1114	<	public void run() {
1115	<	try {
1116	<	threadAssertNull(q.pollFirst(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
1117	<	q.pollFirst(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
1118	<	q.pollFirst(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
1119	<	threadShouldThrow();
1120	<	} catch (InterruptedException success) { }
1121	<	}
1122	<	});
1123	<	try {
1124	<	t.start();
1125	<	Thread.sleep(SMALL_DELAY_MS);
1126	<	assertTrue(q.offerFirst(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
1127	<	t.interrupt();
1128	<	t.join();
1129	<	} catch (Exception e){
1130	<	unexpectedException();
1131	<	}
1108	>	* timed pollFirst before a delayed offerFirst fails; after offerFirst succeeds;
1109	>	* on interruption throws
1110	>	*/
1111	>	public void testTimedPollFirstWithOfferFirst() throws InterruptedException {
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	>	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	>	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	>	awaitTermination(t);
1148		}
1149
1150		/**
1151		* putLast(null) throws NPE
1152		*/
1153	<	public void testPutLastNull() {
1154	<	try {
1155	<	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
1153	>	public void testPutLastNull() throws InterruptedException {
1154	>	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(SIZE);
1155	>	try {
1156		q.putLast(null);
1157		shouldThrow();
1158	<	}
1159	<	catch (NullPointerException success){
1132	<	}
1133	<	catch (InterruptedException ie) {
1134	<	unexpectedException();
1135	<	}
1136	<	}
1158	>	} catch (NullPointerException success) {}
1159	>	}
1160
1161		/**
1162		* all elements successfully putLast are contained
1163		*/
1164	<	public void testPutLast() {
1165	<	try {
1166	<	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
1167	<	for (int i = 0; i < SIZE; ++i) {
1168	<	Integer I = new Integer(i);
1169	<	q.putLast(I);
1147	<	assertTrue(q.contains(I));
1148	<	}
1149	<	assertEquals(0, q.remainingCapacity());
1150	<	}
1151	<	catch (InterruptedException ie) {
1152	<	unexpectedException();
1164	>	public void testPutLast() throws InterruptedException {
1165	>	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(SIZE);
1166	>	for (int i = 0; i < SIZE; ++i) {
1167	>	Item x = itemFor(i);
1168	>	q.putLast(x);
1169	>	mustContain(q, x);
1170		}
1171	+	mustEqual(0, q.remainingCapacity());
1172		}
1173
1174		/**
1175		* putLast blocks interruptibly if full
1176		*/
1177	<	public void testBlockingPutLast() {
1178	<	Thread t = new Thread(new Runnable() {
1179	<	public void run() {
1180	<	int added = 0;
1181	<	try {
1182	<	LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE);
1183	<	for (int i = 0; i < SIZE; ++i) {
1184	<	q.putLast(new Integer(i));
1185	<	++added;
1186	<	}
1187	<	q.putLast(new Integer(SIZE));
1188	<	threadShouldThrow();
1189	<	} catch (InterruptedException ie){
1190	<	threadAssertEquals(added, SIZE);
1191	<	}
1192	<	}});
1193	<	t.start();
1194	<	try {
1195	<	Thread.sleep(SHORT_DELAY_MS);
1196	<	t.interrupt();
1197	<	t.join();
1198	<	}
1199	<	catch (InterruptedException ie) {
1200	<	unexpectedException();
1201	<	}
1177	>	public void testBlockingPutLast() throws InterruptedException {
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(itemFor(i));
1184	>	mustEqual(SIZE, q.size());
1185	>	mustEqual(0, q.remainingCapacity());
1186	>
1187	>	Thread.currentThread().interrupt();
1188	>	try {
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	>	await(pleaseInterrupt);
1203	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
1204	>	t.interrupt();
1205	>	awaitTermination(t);
1206	>	mustEqual(SIZE, q.size());
1207	>	mustEqual(0, q.remainingCapacity());
1208		}
1209
1210		/**
1211	<	* putLast blocks waiting for take when full
1212	<	*/
1213	<	public void testPutLastWithTake() {
1214	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
1215	<	Thread t = new Thread(new Runnable() {
1216	<	public void run() {
1217	<	int added = 0;
1218	<	try {
1219	<	q.putLast(new Object());
1220	<	++added;
1221	<	q.putLast(new Object());
1222	<	++added;
1223	<	q.putLast(new Object());
1224	<	++added;
1225	<	q.putLast(new Object());
1226	<	++added;
1227	<	threadShouldThrow();
1228	<	} catch (InterruptedException e){
1229	<	threadAssertTrue(added >= 2);
1230	<	}
1231	<	}
1232	<	});
1233	<	try {
1234	<	t.start();
1235	<	Thread.sleep(SHORT_DELAY_MS);
1236	<	q.take();
1237	<	t.interrupt();
1238	<	t.join();
1239	<	} catch (Exception e){
1240	<	unexpectedException();
1241	<	}
1211	>	* putLast blocks interruptibly waiting for take when full
1212	>	*/
1213	>	public void testPutLastWithTake() throws InterruptedException {
1214	>	final int capacity = 2;
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; 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(ninetynine);
1235	>	shouldThrow();
1236	>	} catch (InterruptedException success) {}
1237	>	assertFalse(Thread.interrupted());
1238	>	}});
1239	>
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	>	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() {
1255	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
1256	<	Thread t = new Thread(new Runnable() {
1257	<	public void run() {
1258	<	try {
1259	<	q.putLast(new Object());
1260	<	q.putLast(new Object());
1261	<	threadAssertFalse(q.offerLast(new Object(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
1262	<	q.offerLast(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS);
1263	<	threadShouldThrow();
1264	<	} catch (InterruptedException success){}
1265	<	}
1266	<	});
1267	<
1268	<	try {
1269	<	t.start();
1270	<	Thread.sleep(SMALL_DELAY_MS);
1271	<	t.interrupt();
1272	<	t.join();
1273	<	} catch (Exception e){
1274	<	unexpectedException();
1275	<	}
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(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(four, LONGER_DELAY_MS, MILLISECONDS);
1275	>	shouldThrow();
1276	>	} catch (InterruptedException success) {}
1277	>	}});
1278	>
1279	>	await(pleaseInterrupt);
1280	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
1281	>	t.interrupt();
1282	>	awaitTermination(t);
1283		}
1284
1285		/**
1286		* takeLast retrieves elements in FIFO order
1287		*/
1288	<	public void testTakeLast() {
1289	<	try {
1290	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1291	<	for (int i = 0; i < SIZE; ++i) {
1254	<	assertEquals(SIZE-i-1, ((Integer)q.takeLast()).intValue());
1255	<	}
1256	<	} catch (InterruptedException e){
1257	<	unexpectedException();
1258	<	}
1259	<	}
1260	<
1261	<	/**
1262	<	* takeLast blocks interruptibly when empty
1263	<	*/
1264	<	public void testTakeLastFromEmpty() {
1265	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
1266	<	Thread t = new Thread(new Runnable() {
1267	<	public void run() {
1268	<	try {
1269	<	q.takeLast();
1270	<	threadShouldThrow();
1271	<	} catch (InterruptedException success){ }
1272	<	}
1273	<	});
1274	<	try {
1275	<	t.start();
1276	<	Thread.sleep(SHORT_DELAY_MS);
1277	<	t.interrupt();
1278	<	t.join();
1279	<	} catch (Exception e){
1280	<	unexpectedException();
1288	>	public void testTakeLast() throws InterruptedException {
1289	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1290	>	for (int i = 0; i < SIZE; ++i) {
1291	>	mustEqual(SIZE - i - 1, q.takeLast());
1292		}
1293		}
1294
1295		/**
1296	<	* TakeLast removes existing elements until empty, then blocks interruptibly
1297	<	*/
1298	<	public void testBlockingTakeLast() {
1299	<	Thread t = new Thread(new Runnable() {
1300	<	public void run() {
1301	<	try {
1302	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1303	<	for (int i = 0; i < SIZE; ++i) {
1304	<	assertEquals(SIZE-i-1, ((Integer)q.takeLast()).intValue());
1305	<	}
1306	<	q.takeLast();
1307	<	threadShouldThrow();
1308	<	} catch (InterruptedException success){
1309	<	}
1310	<	}});
1311	<	t.start();
1301	<	try {
1302	<	Thread.sleep(SHORT_DELAY_MS);
1303	<	t.interrupt();
1304	<	t.join();
1305	<	}
1306	<	catch (InterruptedException ie) {
1307	<	unexpectedException();
1308	<	}
1309	<	}
1296	>	* takeLast removes existing elements until empty, then blocks interruptibly
1297	>	*/
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	>	for (int i = 0; i < SIZE; i++)
1304	>	mustEqual(SIZE - i - 1, q.takeLast());
1305	>
1306	>	Thread.currentThread().interrupt();
1307	>	try {
1308	>	q.takeLast();
1309	>	shouldThrow();
1310	>	} catch (InterruptedException success) {}
1311	>	assertFalse(Thread.interrupted());
1312
1313	+	pleaseInterrupt.countDown();
1314	+	try {
1315	+	q.takeLast();
1316	+	shouldThrow();
1317	+	} catch (InterruptedException success) {}
1318	+	assertFalse(Thread.interrupted());
1319	+	}});
1320	+
1321	+	await(pleaseInterrupt);
1322	+	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
1323	+	t.interrupt();
1324	+	awaitTermination(t);
1325	+	}
1326
1327		/**
1328		* timed pollLast with zero timeout succeeds when non-empty, else times out
1329		*/
1330	<	public void testTimedPollLast0() {
1331	<	try {
1332	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1333	<	for (int i = 0; i < SIZE; ++i) {
1334	<	assertEquals(SIZE-i-1, ((Integer)q.pollLast(0, TimeUnit.MILLISECONDS)).intValue());
1335	<	}
1321	<	assertNull(q.pollLast(0, TimeUnit.MILLISECONDS));
1322	<	} catch (InterruptedException e){
1323	<	unexpectedException();
1324	<	}
1330	>	public void testTimedPollLast0() throws InterruptedException {
1331	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1332	>	for (int i = 0; i < SIZE; ++i) {
1333	>	mustEqual(SIZE - i - 1, q.pollLast(0, MILLISECONDS));
1334	>	}
1335	>	assertNull(q.pollLast(0, MILLISECONDS));
1336		}
1337
1338		/**
1339		* timed pollLast with nonzero timeout succeeds when non-empty, else times out
1340		*/
1341	<	public void testTimedPollLast() {
1342	<	try {
1343	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1344	<	for (int i = 0; i < SIZE; ++i) {
1345	<	assertEquals(SIZE-i-1, ((Integer)q.pollLast(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
1346	<	}
1347	<	assertNull(q.pollLast(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
1348	<	} catch (InterruptedException e){
1349	<	unexpectedException();
1350	<	}
1341	>	public void testTimedPollLast() throws InterruptedException {
1342	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1343	>	for (int i = 0; i < SIZE; ++i) {
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		/**
1355		* Interrupted timed pollLast throws InterruptedException instead of
1356		* returning timeout status
1357		*/
1358	<	public void testInterruptedTimedPollLast() {
1359	<	Thread t = new Thread(new Runnable() {
1360	<	public void run() {
1361	<	try {
1362	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1363	<	for (int i = 0; i < SIZE; ++i) {
1364	<	threadAssertEquals(SIZE-i-1, ((Integer)q.pollLast(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
1365	<	}
1366	<	threadAssertNull(q.pollLast(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
1367	<	} catch (InterruptedException success){
1368	<	}
1369	<	}});
1370	<	t.start();
1371	<	try {
1372	<	Thread.sleep(SHORT_DELAY_MS);
1373	<	t.interrupt();
1374	<	t.join();
1375	<	}
1376	<	catch (InterruptedException ie) {
1377	<	unexpectedException();
1378	<	}
1358	>	public void testInterruptedTimedPollLast() throws InterruptedException {
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	>	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(LONGER_DELAY_MS, MILLISECONDS);
1377	>	shouldThrow();
1378	>	} catch (InterruptedException success) {}
1379	>	assertFalse(Thread.interrupted());
1380	>	}});
1381	>
1382	>	await(pleaseInterrupt);
1383	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
1384	>	t.interrupt();
1385	>	awaitTermination(t);
1386	>	checkEmpty(q);
1387		}
1388
1389		/**
1390	<	*  timed poll before a delayed offerLast fails; after offerLast succeeds;
1391	<	*  on interruption throws
1392	<	*/
1393	<	public void testTimedPollWithOfferLast() {
1394	<	final LinkedBlockingDeque q = new LinkedBlockingDeque(2);
1395	<	Thread t = new Thread(new Runnable() {
1396	<	public void run() {
1397	<	try {
1398	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
1399	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
1400	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
1401	<	threadShouldThrow();
1402	<	} catch (InterruptedException success) { }
1403	<	}
1404	<	});
1405	<	try {
1406	<	t.start();
1407	<	Thread.sleep(SMALL_DELAY_MS);
1408	<	assertTrue(q.offerLast(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
1409	<	t.interrupt();
1410	<	t.join();
1411	<	} catch (Exception e){
1392	<	unexpectedException();
1393	<	}
1394	<	}
1390	>	* timed poll before a delayed offerLast fails; after offerLast succeeds;
1391	>	* on interruption throws
1392	>	*/
1393	>	public void testTimedPollWithOfferLast() throws InterruptedException {
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	>	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	+	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	+	awaitTermination(t);
1432	+	}
1433
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, ((Integer)q.element()).intValue());
1440	>	mustEqual(i, q.element());
1441		q.poll();
1442		}
1443		try {
1444		q.element();
1445		shouldThrow();
1446	<	}
1410	<	catch (NoSuchElementException success) {}
1411	<	}
1412	<
1413	<	/**
1414	<	* remove(x) removes x and returns true if present
1415	<	*/
1416	<	public void testRemoveElement() {
1417	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1418	<	for (int i = 1; i < SIZE; i+=2) {
1419	<	assertTrue(q.remove(new Integer(i)));
1420	<	}
1421	<	for (int i = 0; i < SIZE; i+=2) {
1422	<	assertTrue(q.remove(new Integer(i)));
1423	<	assertFalse(q.remove(new Integer(i+1)));
1424	<	}
1425	<	assertTrue(q.isEmpty());
1446	>	} catch (NoSuchElementException success) {}
1447		}
1448
1449		/**
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 1441 | 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 1457 | 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 1471 | 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 1481 | 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 1491 | 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());
1500	<	assertFalse(q.contains(I));
1520	>	mustNotContain(q, p.remove());
1521		}
1522		}
1523		}
1524
1525		/**
1526	<	* toArray contains all elements
1526	>	* toArray contains all elements in FIFO order
1527		*/
1528	<	public void testToArray() {
1529	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1530	<	Object[] o = q.toArray();
1531	<	try {
1532	<	for(int i = 0; i < o.length; i++)
1533	<	assertEquals(o[i], q.take());
1534	<	} catch (InterruptedException e){
1515	<	unexpectedException();
1516	<	}
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
1538	>	* toArray(a) contains all elements in FIFO order
1539		*/
1540		public void testToArray2() {
1541	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1542	<	Integer[] ints = new Integer[SIZE];
1543	<	ints = (Integer[])q.toArray(ints);
1544	<	try {
1545	<	for(int i = 0; i < ints.length; i++)
1546	<	assertEquals(ints[i], q.take());
1547	<	} catch (InterruptedException e){
1530	<	unexpectedException();
1531	<	}
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(null) throws NPE
1551	>	* toArray(incompatible array type) throws ArrayStoreException
1552		*/
1553	<	public void testToArray_BadArg() {
1554	<	try {
1555	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1556	<	Object o[] = q.toArray(null);
1557	<	shouldThrow();
1558	<	} catch(NullPointerException success){}
1553	>	public void testToArray1_BadArg() {
1554	>	LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1555	>	try {
1556	>	q.toArray(new String[10]);
1557	>	shouldThrow();
1558	>	} catch (ArrayStoreException success) {}
1559		}
1560
1561		/**
1562	<	* toArray with incompatible array type throws CCE
1562	>	* iterator iterates through all elements
1563		*/
1564	<	public void testToArray1_BadArg() {
1565	<	try {
1566	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1567	<	Object o[] = q.toArray(new String[10] );
1568	<	shouldThrow();
1569	<	} catch(ArrayStoreException  success){}
1570	<	}
1564	>	public void testIterator() throws InterruptedException {
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 iterates through all elements
1581	>	* iterator of empty collection has no elements
1582		*/
1583	<	public void testIterator() {
1584	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1585	<	Iterator it = q.iterator();
1586	<	try {
1564	<	while(it.hasNext()){
1565	<	assertEquals(it.next(), q.take());
1566	<	}
1567	<	} catch (InterruptedException e){
1568	<	unexpectedException();
1569	<	}
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);
1592	>	public void testIteratorRemove() {
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
1602		it = q.iterator();
1603	<	assertEquals(it.next(), one);
1604	<	assertEquals(it.next(), three);
1603	>	assertSame(it.next(), one);
1604	>	assertSame(it.next(), three);
1605		assertFalse(it.hasNext());
1606		}
1607
1591	–
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	<	int i = ((Integer)(it.next())).intValue();
1604	<	assertEquals(++k, i);
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);
1627	>	public void testWeaklyConsistentIteration() {
1628	>	final LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>(3);
1629		q.add(one);
1630		q.add(two);
1631		q.add(three);
1632	<	try {
1633	<	for (Iterator it = q.iterator(); it.hasNext();) {
1634	<	q.remove();
1620	<	it.next();
1621	<	}
1622	<	}
1623	<	catch (ConcurrentModificationException e) {
1624	<	unexpectedException();
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
1629	–
1639		/**
1640	<	*  Descending iterator iterates through all elements
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();
1646	<	while(it.hasNext()) {
1647	<	assertTrue(q.contains(it.next()));
1645	>	Iterator<? extends Item> it = q.descendingIterator();
1646	>	while (it.hasNext()) {
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();
1654	<	} catch(NoSuchElementException success) {
1655	<	}
1654	>	shouldThrow();
1655	>	} catch (NoSuchElementException success) {}
1656		}
1657
1658		/**
1659	<	*  Descending iterator ordering is reverse FIFO
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	<	int i = ((Integer)(it.next())).intValue();
1661	<	assertEquals(++k, i);
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 1671 | Line 1680 | public class LinkedBlockingDequeTest ext
1680		/**
1681		* descendingIterator.remove removes current element
1682		*/
1683	<	public void testDescendingIteratorRemove () {
1684	<	final LinkedBlockingDeque q = new LinkedBlockingDeque();
1683	>	public void testDescendingIteratorRemove() {
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
1693	–
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
1705	–
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 Runnable() {
1722	<	public void run() {
1723	<	threadAssertFalse(q.offer(three));
1724	<	try {
1725	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
1726	<	threadAssertEquals(0, q.remainingCapacity());
1727	<	}
1728	<	catch (InterruptedException e) {
1729	<	threadUnexpectedException();
1723	<	}
1724	<	}
1725	<	});
1726	<
1727	<	executor.execute(new Runnable() {
1728	<	public void run() {
1729	<	try {
1730	<	Thread.sleep(SMALL_DELAY_MS);
1731	<	threadAssertEquals(one, q.take());
1732	<	}
1733	<	catch (InterruptedException e) {
1734	<	threadUnexpectedException();
1735	<	}
1736	<	}
1737	<	});
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	<	joinPool(executor);
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 Runnable() {
1746	<	public void run() {
1747	<	threadAssertNull(q.poll());
1748	<	try {
1749	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
1750	<	threadAssertTrue(q.isEmpty());
1751	<	}
1752	<	catch (InterruptedException e) {
1753	<	threadUnexpectedException();
1757	<	}
1758	<	}
1759	<	});
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 Runnable() {
1756	<	public void run() {
1757	<	try {
1764	<	Thread.sleep(SMALL_DELAY_MS);
1755	>	executor.execute(new CheckedRunnable() {
1756	>	public void realRun() throws InterruptedException {
1757	>	threadsStarted.await();
1758		q.put(one);
1759	<	}
1767	<	catch (InterruptedException e) {
1768	<	threadUnexpectedException();
1769	<	}
1770	<	}
1771	<	});
1772	<
1773	<	joinPool(executor);
1774	<	}
1775	<
1776	<	/**
1777	<	* A deserialized serialized deque has same elements in same order
1778	<	*/
1779	<	public void testSerialization() {
1780	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1781	<
1782	<	try {
1783	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1784	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
1785	<	out.writeObject(q);
1786	<	out.close();
1787	<
1788	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
1789	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
1790	<	LinkedBlockingDeque r = (LinkedBlockingDeque)in.readObject();
1791	<	assertEquals(q.size(), r.size());
1792	<	while (!q.isEmpty())
1793	<	assertEquals(q.remove(), r.remove());
1794	<	} catch(Exception e){
1795	<	unexpectedException();
1796	<	}
1797	<	}
1798	<
1799	<	/**
1800	<	* drainTo(null) throws NPE
1801	<	*/
1802	<	public void testDrainToNull() {
1803	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1804	<	try {
1805	<	q.drainTo(null);
1806	<	shouldThrow();
1807	<	} catch(NullPointerException success) {
1759	>	}});
1760		}
1761		}
1762
1763		/**
1764	<	* drainTo(this) throws IAE
1764	>	* A deserialized/reserialized deque has same elements in same order
1765		*/
1766	<	public void testDrainToSelf() {
1767	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1768	<	try {
1769	<	q.drainTo(q);
1770	<	shouldThrow();
1771	<	} catch(IllegalArgumentException success) {
1766	>	public void testSerialization() throws Exception {
1767	>	Queue<Item> x = populatedDeque(SIZE);
1768	>	Queue<Item> y = serialClone(x);
1769	>
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() {
1809	<	final LinkedBlockingDeque q = populatedDeque(SIZE);
1810	<	Thread t = new Thread(new Runnable() {
1811	<	public void run() {
1812	<	try {
1813	<	q.put(new Integer(SIZE+1));
1856	<	} catch (InterruptedException ie){
1857	<	threadUnexpectedException();
1858	<	}
1859	<	}
1860	<	});
1861	<	try {
1862	<	t.start();
1863	<	ArrayList l = new ArrayList();
1864	<	q.drainTo(l);
1865	<	assertTrue(l.size() >= SIZE);
1866	<	for (int i = 0; i < SIZE; ++i)
1867	<	assertEquals(l.get(i), new Integer(i));
1868	<	t.join();
1869	<	assertTrue(q.size() + l.size() >= SIZE);
1870	<	} catch(Exception e){
1871	<	unexpectedException();
1872	<	}
1873	<	}
1808	>	public void testDrainToWithActivePut() throws InterruptedException {
1809	>	final LinkedBlockingDeque<Item> q = populatedDeque(SIZE);
1810	>	Thread t = new Thread(new CheckedRunnable() {
1811	>	public void realRun() throws InterruptedException {
1812	>	q.put(new Item(SIZE + 1));
1813	>	}});
1814
1815	<	/**
1816	<	* drainTo(null, n) throws NPE
1817	<	*/
1818	<	public void testDrainToNullN() {
1819	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1820	<	try {
1821	<	q.drainTo(null, 0);
1822	<	shouldThrow();
1883	<	} catch(NullPointerException success) {
1884	<	}
1815	>	t.start();
1816	>	ArrayList<Item> l = new ArrayList<>();
1817	>	q.drainTo(l);
1818	>	assertTrue(l.size() >= SIZE);
1819	>	for (int i = 0; i < SIZE; ++i)
1820	>	mustEqual(l.get(i), i);
1821	>	t.join();
1822	>	assertTrue(q.size() + l.size() >= SIZE);
1823		}
1824
1825		/**
1826	<	* drainTo(this, n) throws IAE
1826	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
1827		*/
1828	<	public void testDrainToSelfN() {
1829	<	LinkedBlockingDeque q = populatedDeque(SIZE);
1830	<	try {
1831	<	q.drainTo(q, 0);
1832	<	shouldThrow();
1833	<	} catch(IllegalArgumentException success) {
1828	>	public void testDrainToN() {
1829	>	LinkedBlockingDeque<Item> q = new LinkedBlockingDeque<>();
1830	>	for (int i = 0; i < SIZE + 2; ++i) {
1831	>	for (int j = 0; j < SIZE; j++)
1832	>	mustOffer(q, j);
1833	>	ArrayList<Item> l = new ArrayList<>();
1834	>	q.drainTo(l, i);
1835	>	int k = (i < SIZE) ? i : SIZE;
1836	>	mustEqual(k, l.size());
1837	>	mustEqual(SIZE - k, q.size());
1838	>	for (int j = 0; j < k; ++j)
1839	>	mustEqual(l.get(j), j);
1840	>	do {} while (q.poll() != null);
1841		}
1842		}
1843
1844		/**
1845	<	* drainTo(c, n) empties first max {n, size} elements of deque into c
1845	>	* remove(null), contains(null) always return false
1846		*/
1847	<	public void testDrainToN() {
1848	<	LinkedBlockingDeque q = new LinkedBlockingDeque();
1849	<	for (int i = 0; i < SIZE + 2; ++i) {
1850	<	for(int j = 0; j < SIZE; j++)
1851	<	assertTrue(q.offer(new Integer(j)));
1852	<	ArrayList l = new ArrayList();
1853	<	q.drainTo(l, i);
1854	<	int k = (i < SIZE)? i : SIZE;
1855	<	assertEquals(l.size(), k);
1856	<	assertEquals(q.size(), SIZE-k);
1857	<	for (int j = 0; j < k; ++j)
1913	<	assertEquals(l.get(j), new Integer(j));
1914	<	while (q.poll() != null) ;
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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