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Comparing jsr166/src/test/tck/LinkedBlockingQueueTest.java (file contents):
Revision 1.12 by jsr166, Mon Nov 2 20:28:31 2009 UTC vs.
Revision 1.62 by jsr166, Tue Oct 6 00:03:55 2015 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.*;
11	<	import java.util.concurrent.*;
12	<	import java.io.*;
9	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	>
11	>	import java.util.ArrayList;
12	>	import java.util.Arrays;
13	>	import java.util.Collection;
14	>	import java.util.Iterator;
15	>	import java.util.NoSuchElementException;
16	>	import java.util.Queue;
17	>	import java.util.concurrent.BlockingQueue;
18	>	import java.util.concurrent.CountDownLatch;
19	>	import java.util.concurrent.Executors;
20	>	import java.util.concurrent.ExecutorService;
21	>	import java.util.concurrent.LinkedBlockingQueue;
22	>
23	>	import junit.framework.Test;
24
25		public class LinkedBlockingQueueTest extends JSR166TestCase {
26
27	+	public static class Unbounded extends BlockingQueueTest {
28	+	protected BlockingQueue emptyCollection() {
29	+	return new LinkedBlockingQueue();
30	+	}
31	+	}
32	+
33	+	public static class Bounded extends BlockingQueueTest {
34	+	protected BlockingQueue emptyCollection() {
35	+	return new LinkedBlockingQueue(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(LinkedBlockingQueueTest.class);
44	>	return newTestSuite(LinkedBlockingQueueTest.class,
45	>	new Unbounded().testSuite(),
46	>	new Bounded().testSuite());
47		}
48
24	–
49		/**
50	<	* Create a queue of given size containing consecutive
50	>	* Returns a new queue of given size containing consecutive
51		* Integers 0 ... n.
52		*/
53	<	private LinkedBlockingQueue populatedQueue(int n) {
54	<	LinkedBlockingQueue q = new LinkedBlockingQueue(n);
53	>	private LinkedBlockingQueue<Integer> populatedQueue(int n) {
54	>	LinkedBlockingQueue<Integer> q =
55	>	new LinkedBlockingQueue<Integer>(n);
56		assertTrue(q.isEmpty());
57	<	for(int i = 0; i < n; i++)
58	<	assertTrue(q.offer(new Integer(i)));
57	>	for (int i = 0; i < n; i++)
58	>	assertTrue(q.offer(new Integer(i)));
59		assertFalse(q.isEmpty());
60		assertEquals(0, q.remainingCapacity());
61	<	assertEquals(n, q.size());
61	>	assertEquals(n, q.size());
62		return q;
63		}
64
#	Line 47 | Line 72 | public class LinkedBlockingQueueTest ext
72		}
73
74		/**
75	<	* Constructor throws IAE if  capacity argument nonpositive
75	>	* Constructor throws IllegalArgumentException if capacity argument nonpositive
76		*/
77		public void testConstructor2() {
78		try {
79	<	LinkedBlockingQueue q = new LinkedBlockingQueue(0);
79	>	new LinkedBlockingQueue(0);
80		shouldThrow();
81	<	}
57	<	catch (IllegalArgumentException success) {}
81	>	} catch (IllegalArgumentException success) {}
82		}
83
84		/**
85	<	* Initializing from null Collection throws NPE
85	>	* Initializing from null Collection throws NullPointerException
86		*/
87		public void testConstructor3() {
88		try {
89	<	LinkedBlockingQueue q = new LinkedBlockingQueue(null);
89	>	new LinkedBlockingQueue(null);
90		shouldThrow();
91	<	}
68	<	catch (NullPointerException success) {}
91	>	} catch (NullPointerException success) {}
92		}
93
94		/**
95	<	* Initializing from Collection of null elements throws NPE
95	>	* Initializing from Collection of null elements throws NullPointerException
96		*/
97		public void testConstructor4() {
98	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
99		try {
100	<	Integer[] ints = new Integer[SIZE];
77	<	LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints));
100	>	new LinkedBlockingQueue(elements);
101		shouldThrow();
102	<	}
80	<	catch (NullPointerException success) {}
102	>	} catch (NullPointerException success) {}
103		}
104
105		/**
106	<	* Initializing from Collection with some null elements throws NPE
106	>	* Initializing from Collection with some null elements throws
107	>	* NullPointerException
108		*/
109		public void testConstructor5() {
110	+	Integer[] ints = new Integer[SIZE];
111	+	for (int i = 0; i < SIZE - 1; ++i)
112	+	ints[i] = new Integer(i);
113	+	Collection<Integer> elements = Arrays.asList(ints);
114		try {
115	<	Integer[] ints = new Integer[SIZE];
89	<	for (int i = 0; i < SIZE-1; ++i)
90	<	ints[i] = new Integer(i);
91	<	LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints));
115	>	new LinkedBlockingQueue(elements);
116		shouldThrow();
117	<	}
94	<	catch (NullPointerException success) {}
117	>	} catch (NullPointerException success) {}
118		}
119
120		/**
121		* Queue contains all elements of collection used to initialize
122		*/
123		public void testConstructor6() {
124	<	try {
125	<	Integer[] ints = new Integer[SIZE];
126	<	for (int i = 0; i < SIZE; ++i)
127	<	ints[i] = new Integer(i);
128	<	LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints));
129	<	for (int i = 0; i < SIZE; ++i)
107	<	assertEquals(ints[i], q.poll());
108	<	}
109	<	finally {}
124	>	Integer[] ints = new Integer[SIZE];
125	>	for (int i = 0; i < SIZE; ++i)
126	>	ints[i] = new Integer(i);
127	>	LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints));
128	>	for (int i = 0; i < SIZE; ++i)
129	>	assertEquals(ints[i], q.poll());
130		}
131
132		/**
#	Line 128 | Line 148 | public class LinkedBlockingQueueTest ext
148		* remainingCapacity decreases on add, increases on remove
149		*/
150		public void testRemainingCapacity() {
151	<	LinkedBlockingQueue q = populatedQueue(SIZE);
151	>	BlockingQueue q = populatedQueue(SIZE);
152		for (int i = 0; i < SIZE; ++i) {
153		assertEquals(i, q.remainingCapacity());
154	<	assertEquals(SIZE-i, q.size());
155	<	q.remove();
154	>	assertEquals(SIZE, q.size() + q.remainingCapacity());
155	>	assertEquals(i, q.remove());
156		}
157		for (int i = 0; i < SIZE; ++i) {
158	<	assertEquals(SIZE-i, q.remainingCapacity());
159	<	assertEquals(i, q.size());
160	<	q.add(new Integer(i));
158	>	assertEquals(SIZE - i, q.remainingCapacity());
159	>	assertEquals(SIZE, q.size() + q.remainingCapacity());
160	>	assertTrue(q.add(i));
161		}
162		}
163
164		/**
145	–	* offer(null) throws NPE
146	–	*/
147	–	public void testOfferNull() {
148	–	try {
149	–	LinkedBlockingQueue q = new LinkedBlockingQueue(1);
150	–	q.offer(null);
151	–	shouldThrow();
152	–	} catch (NullPointerException success) { }
153	–	}
154	–
155	–	/**
156	–	* add(null) throws NPE
157	–	*/
158	–	public void testAddNull() {
159	–	try {
160	–	LinkedBlockingQueue q = new LinkedBlockingQueue(1);
161	–	q.add(null);
162	–	shouldThrow();
163	–	} catch (NullPointerException success) { }
164	–	}
165	–
166	–	/**
165		* Offer succeeds if not full; fails if full
166		*/
167		public void testOffer() {
#	Line 173 | Line 171 | public class LinkedBlockingQueueTest ext
171		}
172
173		/**
174	<	* add succeeds if not full; throws ISE if full
174	>	* add succeeds if not full; throws IllegalStateException if full
175		*/
176		public void testAdd() {
177	<	try {
178	<	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
179	<	for (int i = 0; i < SIZE; ++i) {
180	<	assertTrue(q.add(new Integer(i)));
183	<	}
184	<	assertEquals(0, q.remainingCapacity());
185	<	q.add(new Integer(SIZE));
186	<	} catch (IllegalStateException success){
187	<	}
188	<	}
189	<
190	<	/**
191	<	* addAll(null) throws NPE
192	<	*/
193	<	public void testAddAll1() {
177	>	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
178	>	for (int i = 0; i < SIZE; ++i)
179	>	assertTrue(q.add(new Integer(i)));
180	>	assertEquals(0, q.remainingCapacity());
181		try {
182	<	LinkedBlockingQueue q = new LinkedBlockingQueue(1);
196	<	q.addAll(null);
182	>	q.add(new Integer(SIZE));
183		shouldThrow();
184	<	}
199	<	catch (NullPointerException success) {}
184	>	} catch (IllegalStateException success) {}
185		}
186
187		/**
188	<	* addAll(this) throws IAE
188	>	* addAll(this) throws IllegalArgumentException
189		*/
190		public void testAddAllSelf() {
191	+	LinkedBlockingQueue q = populatedQueue(SIZE);
192		try {
207	–	LinkedBlockingQueue q = populatedQueue(SIZE);
193		q.addAll(q);
194		shouldThrow();
195	<	}
211	<	catch (IllegalArgumentException success) {}
195	>	} catch (IllegalArgumentException success) {}
196		}
197
198		/**
215	–	* addAll of a collection with null elements throws NPE
216	–	*/
217	–	public void testAddAll2() {
218	–	try {
219	–	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
220	–	Integer[] ints = new Integer[SIZE];
221	–	q.addAll(Arrays.asList(ints));
222	–	shouldThrow();
223	–	}
224	–	catch (NullPointerException success) {}
225	–	}
226	–	/**
199		* addAll of a collection with any null elements throws NPE after
200		* possibly adding some elements
201		*/
202		public void testAddAll3() {
203	+	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
204	+	Integer[] ints = new Integer[SIZE];
205	+	for (int i = 0; i < SIZE - 1; ++i)
206	+	ints[i] = new Integer(i);
207	+	Collection<Integer> elements = Arrays.asList(ints);
208		try {
209	<	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
233	<	Integer[] ints = new Integer[SIZE];
234	<	for (int i = 0; i < SIZE-1; ++i)
235	<	ints[i] = new Integer(i);
236	<	q.addAll(Arrays.asList(ints));
209	>	q.addAll(elements);
210		shouldThrow();
211	<	}
239	<	catch (NullPointerException success) {}
211	>	} catch (NullPointerException success) {}
212		}
213	+
214		/**
215	<	* addAll throws ISE if not enough room
215	>	* addAll throws IllegalStateException if not enough room
216		*/
217		public void testAddAll4() {
218	+	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE - 1);
219	+	Integer[] ints = new Integer[SIZE];
220	+	for (int i = 0; i < SIZE; ++i)
221	+	ints[i] = new Integer(i);
222	+	Collection<Integer> elements = Arrays.asList(ints);
223		try {
224	<	LinkedBlockingQueue q = new LinkedBlockingQueue(1);
247	<	Integer[] ints = new Integer[SIZE];
248	<	for (int i = 0; i < SIZE; ++i)
249	<	ints[i] = new Integer(i);
250	<	q.addAll(Arrays.asList(ints));
224	>	q.addAll(elements);
225		shouldThrow();
226	<	}
253	<	catch (IllegalStateException success) {}
226	>	} catch (IllegalStateException success) {}
227		}
228	+
229		/**
230		* Queue contains all elements, in traversal order, of successful addAll
231		*/
232		public void testAddAll5() {
233	<	try {
234	<	Integer[] empty = new Integer[0];
235	<	Integer[] ints = new Integer[SIZE];
236	<	for (int i = 0; i < SIZE; ++i)
237	<	ints[i] = new Integer(i);
238	<	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
239	<	assertFalse(q.addAll(Arrays.asList(empty)));
240	<	assertTrue(q.addAll(Arrays.asList(ints)));
241	<	for (int i = 0; i < SIZE; ++i)
268	<	assertEquals(ints[i], q.poll());
269	<	}
270	<	finally {}
233	>	Integer[] empty = new Integer[0];
234	>	Integer[] ints = new Integer[SIZE];
235	>	for (int i = 0; i < SIZE; ++i)
236	>	ints[i] = new Integer(i);
237	>	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
238	>	assertFalse(q.addAll(Arrays.asList(empty)));
239	>	assertTrue(q.addAll(Arrays.asList(ints)));
240	>	for (int i = 0; i < SIZE; ++i)
241	>	assertEquals(ints[i], q.poll());
242		}
243
244		/**
274	–	* put(null) throws NPE
275	–	*/
276	–	public void testPutNull() {
277	–	try {
278	–	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
279	–	q.put(null);
280	–	shouldThrow();
281	–	}
282	–	catch (NullPointerException success){
283	–	}
284	–	catch (InterruptedException ie) {
285	–	unexpectedException();
286	–	}
287	–	}
288	–
289	–	/**
245		* all elements successfully put are contained
246		*/
247	<	public void testPut() {
248	<	try {
249	<	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
250	<	for (int i = 0; i < SIZE; ++i) {
251	<	Integer I = new Integer(i);
252	<	q.put(I);
298	<	assertTrue(q.contains(I));
299	<	}
300	<	assertEquals(0, q.remainingCapacity());
301	<	}
302	<	catch (InterruptedException ie) {
303	<	unexpectedException();
247	>	public void testPut() throws InterruptedException {
248	>	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
249	>	for (int i = 0; i < SIZE; ++i) {
250	>	Integer x = new Integer(i);
251	>	q.put(x);
252	>	assertTrue(q.contains(x));
253		}
254	+	assertEquals(0, q.remainingCapacity());
255		}
256
257		/**
258		* put blocks interruptibly if full
259		*/
260	<	public void testBlockingPut() {
261	<	Thread t = new Thread(new Runnable() {
262	<	public void run() {
263	<	int added = 0;
264	<	try {
265	<	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
266	<	for (int i = 0; i < SIZE; ++i) {
267	<	q.put(new Integer(i));
268	<	++added;
269	<	}
270	<	q.put(new Integer(SIZE));
271	<	threadShouldThrow();
272	<	} catch (InterruptedException ie){
273	<	threadAssertEquals(added, SIZE);
274	<	}
275	<	}});
276	<	t.start();
277	<	try {
278	<	Thread.sleep(SHORT_DELAY_MS);
279	<	t.interrupt();
280	<	t.join();
281	<	}
282	<	catch (InterruptedException ie) {
283	<	unexpectedException();
284	<	}
260	>	public void testBlockingPut() throws InterruptedException {
261	>	final LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
262	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
263	>	Thread t = newStartedThread(new CheckedRunnable() {
264	>	public void realRun() throws InterruptedException {
265	>	for (int i = 0; i < SIZE; ++i)
266	>	q.put(i);
267	>	assertEquals(SIZE, q.size());
268	>	assertEquals(0, q.remainingCapacity());
269	>
270	>	Thread.currentThread().interrupt();
271	>	try {
272	>	q.put(99);
273	>	shouldThrow();
274	>	} catch (InterruptedException success) {}
275	>	assertFalse(Thread.interrupted());
276	>
277	>	pleaseInterrupt.countDown();
278	>	try {
279	>	q.put(99);
280	>	shouldThrow();
281	>	} catch (InterruptedException success) {}
282	>	assertFalse(Thread.interrupted());
283	>	}});
284	>
285	>	await(pleaseInterrupt);
286	>	assertThreadStaysAlive(t);
287	>	t.interrupt();
288	>	awaitTermination(t);
289	>	assertEquals(SIZE, q.size());
290	>	assertEquals(0, q.remainingCapacity());
291		}
292
293		/**
294	<	* put blocks waiting for take when full
294	>	* put blocks interruptibly waiting for take when full
295		*/
296	<	public void testPutWithTake() {
296	>	public void testPutWithTake() throws InterruptedException {
297	>	final int capacity = 2;
298		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
299	<	Thread t = new Thread(new Runnable() {
300	<	public void run() {
301	<	int added = 0;
302	<	try {
303	<	q.put(new Object());
304	<	++added;
305	<	q.put(new Object());
306	<	++added;
307	<	q.put(new Object());
308	<	++added;
309	<	q.put(new Object());
310	<	++added;
311	<	threadShouldThrow();
312	<	} catch (InterruptedException e){
313	<	threadAssertTrue(added >= 2);
314	<	}
315	<	}
316	<	});
317	<	try {
318	<	t.start();
319	<	Thread.sleep(SHORT_DELAY_MS);
320	<	q.take();
321	<	t.interrupt();
322	<	t.join();
323	<	} catch (Exception e){
324	<	unexpectedException();
368	<	}
299	>	final CountDownLatch pleaseTake = new CountDownLatch(1);
300	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
301	>	Thread t = newStartedThread(new CheckedRunnable() {
302	>	public void realRun() throws InterruptedException {
303	>	for (int i = 0; i < capacity; i++)
304	>	q.put(i);
305	>	pleaseTake.countDown();
306	>	q.put(86);
307	>
308	>	pleaseInterrupt.countDown();
309	>	try {
310	>	q.put(99);
311	>	shouldThrow();
312	>	} catch (InterruptedException success) {}
313	>	assertFalse(Thread.interrupted());
314	>	}});
315	>
316	>	await(pleaseTake);
317	>	assertEquals(0, q.remainingCapacity());
318	>	assertEquals(0, q.take());
319	>
320	>	await(pleaseInterrupt);
321	>	assertThreadStaysAlive(t);
322	>	t.interrupt();
323	>	awaitTermination(t);
324	>	assertEquals(0, q.remainingCapacity());
325		}
326
327		/**
#	Line 373 | Line 329 | public class LinkedBlockingQueueTest ext
329		*/
330		public void testTimedOffer() {
331		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
332	<	Thread t = new Thread(new Runnable() {
333	<	public void run() {
334	<	try {
335	<	q.put(new Object());
336	<	q.put(new Object());
337	<	threadAssertFalse(q.offer(new Object(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
338	<	q.offer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS);
339	<	threadShouldThrow();
340	<	} catch (InterruptedException success){}
341	<	}
342	<	});
343	<
344	<	try {
345	<	t.start();
346	<	Thread.sleep(SMALL_DELAY_MS);
347	<	t.interrupt();
348	<	t.join();
349	<	} catch (Exception e){
350	<	unexpectedException();
395	<	}
332	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
333	>	Thread t = newStartedThread(new CheckedRunnable() {
334	>	public void realRun() throws InterruptedException {
335	>	q.put(new Object());
336	>	q.put(new Object());
337	>	long startTime = System.nanoTime();
338	>	assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS));
339	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
340	>	pleaseInterrupt.countDown();
341	>	try {
342	>	q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS);
343	>	shouldThrow();
344	>	} catch (InterruptedException success) {}
345	>	}});
346	>
347	>	await(pleaseInterrupt);
348	>	assertThreadStaysAlive(t);
349	>	t.interrupt();
350	>	awaitTermination(t);
351		}
352
353		/**
354		* take retrieves elements in FIFO order
355		*/
356	<	public void testTake() {
357	<	try {
358	<	LinkedBlockingQueue q = populatedQueue(SIZE);
359	<	for (int i = 0; i < SIZE; ++i) {
405	<	assertEquals(i, ((Integer)q.take()).intValue());
406	<	}
407	<	} catch (InterruptedException e){
408	<	unexpectedException();
409	<	}
410	<	}
411	<
412	<	/**
413	<	* take blocks interruptibly when empty
414	<	*/
415	<	public void testTakeFromEmpty() {
416	<	final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
417	<	Thread t = new Thread(new Runnable() {
418	<	public void run() {
419	<	try {
420	<	q.take();
421	<	threadShouldThrow();
422	<	} catch (InterruptedException success){ }
423	<	}
424	<	});
425	<	try {
426	<	t.start();
427	<	Thread.sleep(SHORT_DELAY_MS);
428	<	t.interrupt();
429	<	t.join();
430	<	} catch (Exception e){
431	<	unexpectedException();
356	>	public void testTake() throws InterruptedException {
357	>	LinkedBlockingQueue q = populatedQueue(SIZE);
358	>	for (int i = 0; i < SIZE; ++i) {
359	>	assertEquals(i, q.take());
360		}
361		}
362
363		/**
364		* Take removes existing elements until empty, then blocks interruptibly
365		*/
366	<	public void testBlockingTake() {
367	<	Thread t = new Thread(new Runnable() {
368	<	public void run() {
369	<	try {
370	<	LinkedBlockingQueue q = populatedQueue(SIZE);
371	<	for (int i = 0; i < SIZE; ++i) {
372	<	assertEquals(i, ((Integer)q.take()).intValue());
373	<	}
446	<	q.take();
447	<	threadShouldThrow();
448	<	} catch (InterruptedException success){
449	<	}
450	<	}});
451	<	t.start();
452	<	try {
453	<	Thread.sleep(SHORT_DELAY_MS);
454	<	t.interrupt();
455	<	t.join();
456	<	}
457	<	catch (InterruptedException ie) {
458	<	unexpectedException();
459	<	}
460	<	}
366	>	public void testBlockingTake() throws InterruptedException {
367	>	final BlockingQueue q = populatedQueue(SIZE);
368	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
369	>	Thread t = newStartedThread(new CheckedRunnable() {
370	>	public void realRun() throws InterruptedException {
371	>	for (int i = 0; i < SIZE; ++i) {
372	>	assertEquals(i, q.take());
373	>	}
374
375	+	Thread.currentThread().interrupt();
376	+	try {
377	+	q.take();
378	+	shouldThrow();
379	+	} catch (InterruptedException success) {}
380	+	assertFalse(Thread.interrupted());
381	+
382	+	pleaseInterrupt.countDown();
383	+	try {
384	+	q.take();
385	+	shouldThrow();
386	+	} catch (InterruptedException success) {}
387	+	assertFalse(Thread.interrupted());
388	+	}});
389	+
390	+	await(pleaseInterrupt);
391	+	assertThreadStaysAlive(t);
392	+	t.interrupt();
393	+	awaitTermination(t);
394	+	}
395
396		/**
397		* poll succeeds unless empty
#	Line 466 | Line 399 | public class LinkedBlockingQueueTest ext
399		public void testPoll() {
400		LinkedBlockingQueue q = populatedQueue(SIZE);
401		for (int i = 0; i < SIZE; ++i) {
402	<	assertEquals(i, ((Integer)q.poll()).intValue());
402	>	assertEquals(i, q.poll());
403		}
404	<	assertNull(q.poll());
404	>	assertNull(q.poll());
405		}
406
407		/**
408	<	* timed pool with zero timeout succeeds when non-empty, else times out
408	>	* timed poll with zero timeout succeeds when non-empty, else times out
409		*/
410	<	public void testTimedPoll0() {
411	<	try {
412	<	LinkedBlockingQueue q = populatedQueue(SIZE);
413	<	for (int i = 0; i < SIZE; ++i) {
414	<	assertEquals(i, ((Integer)q.poll(0, TimeUnit.MILLISECONDS)).intValue());
415	<	}
483	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
484	<	} catch (InterruptedException e){
485	<	unexpectedException();
486	<	}
410	>	public void testTimedPoll0() throws InterruptedException {
411	>	LinkedBlockingQueue q = populatedQueue(SIZE);
412	>	for (int i = 0; i < SIZE; ++i) {
413	>	assertEquals(i, q.poll(0, MILLISECONDS));
414	>	}
415	>	assertNull(q.poll(0, MILLISECONDS));
416		}
417
418		/**
419	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
419	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
420		*/
421	<	public void testTimedPoll() {
422	<	try {
423	<	LinkedBlockingQueue q = populatedQueue(SIZE);
424	<	for (int i = 0; i < SIZE; ++i) {
425	<	assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
426	<	}
427	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
428	<	} catch (InterruptedException e){
429	<	unexpectedException();
430	<	}
421	>	public void testTimedPoll() throws InterruptedException {
422	>	LinkedBlockingQueue<Integer> q = populatedQueue(SIZE);
423	>	for (int i = 0; i < SIZE; ++i) {
424	>	long startTime = System.nanoTime();
425	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
426	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
427	>	}
428	>	long startTime = System.nanoTime();
429	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
430	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
431	>	checkEmpty(q);
432		}
433
434		/**
435		* Interrupted timed poll throws InterruptedException instead of
436		* returning timeout status
437		*/
438	<	public void testInterruptedTimedPoll() {
439	<	Thread t = new Thread(new Runnable() {
440	<	public void run() {
441	<	try {
442	<	LinkedBlockingQueue q = populatedQueue(SIZE);
443	<	for (int i = 0; i < SIZE; ++i) {
444	<	threadAssertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
445	<	}
516	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
517	<	} catch (InterruptedException success){
518	<	}
519	<	}});
520	<	t.start();
521	<	try {
522	<	Thread.sleep(SHORT_DELAY_MS);
523	<	t.interrupt();
524	<	t.join();
525	<	}
526	<	catch (InterruptedException ie) {
527	<	unexpectedException();
528	<	}
529	<	}
530	<
531	<	/**
532	<	*  timed poll before a delayed offer fails; after offer succeeds;
533	<	*  on interruption throws
534	<	*/
535	<	public void testTimedPollWithOffer() {
536	<	final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
537	<	Thread t = new Thread(new Runnable() {
538	<	public void run() {
539	<	try {
540	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
541	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
542	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
543	<	threadShouldThrow();
544	<	} catch (InterruptedException success) { }
438	>	public void testInterruptedTimedPoll() throws InterruptedException {
439	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
440	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
441	>	Thread t = newStartedThread(new CheckedRunnable() {
442	>	public void realRun() throws InterruptedException {
443	>	long startTime = System.nanoTime();
444	>	for (int i = 0; i < SIZE; ++i) {
445	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
446		}
447	<	});
448	<	try {
449	<	t.start();
450	<	Thread.sleep(SMALL_DELAY_MS);
451	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
452	<	t.interrupt();
453	<	t.join();
454	<	} catch (Exception e){
455	<	unexpectedException();
456	<	}
447	>	aboutToWait.countDown();
448	>	try {
449	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
450	>	shouldThrow();
451	>	} catch (InterruptedException success) {
452	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
453	>	}
454	>	}});
455	>
456	>	await(aboutToWait);
457	>	waitForThreadToEnterWaitState(t, LONG_DELAY_MS);
458	>	t.interrupt();
459	>	awaitTermination(t);
460	>	checkEmpty(q);
461		}
462
463		/**
#	Line 561 | Line 466 | public class LinkedBlockingQueueTest ext
466		public void testPeek() {
467		LinkedBlockingQueue q = populatedQueue(SIZE);
468		for (int i = 0; i < SIZE; ++i) {
469	<	assertEquals(i, ((Integer)q.peek()).intValue());
470	<	q.poll();
469	>	assertEquals(i, q.peek());
470	>	assertEquals(i, q.poll());
471		assertTrue(q.peek() == null ||
472	<	i != ((Integer)q.peek()).intValue());
472	>	!q.peek().equals(i));
473		}
474	<	assertNull(q.peek());
474	>	assertNull(q.peek());
475		}
476
477		/**
#	Line 575 | Line 480 | public class LinkedBlockingQueueTest ext
480		public void testElement() {
481		LinkedBlockingQueue q = populatedQueue(SIZE);
482		for (int i = 0; i < SIZE; ++i) {
483	<	assertEquals(i, ((Integer)q.element()).intValue());
484	<	q.poll();
483	>	assertEquals(i, q.element());
484	>	assertEquals(i, q.poll());
485		}
486		try {
487		q.element();
488		shouldThrow();
489	<	}
585	<	catch (NoSuchElementException success) {}
489	>	} catch (NoSuchElementException success) {}
490		}
491
492		/**
#	Line 591 | Line 495 | public class LinkedBlockingQueueTest ext
495		public void testRemove() {
496		LinkedBlockingQueue q = populatedQueue(SIZE);
497		for (int i = 0; i < SIZE; ++i) {
498	<	assertEquals(i, ((Integer)q.remove()).intValue());
498	>	assertEquals(i, q.remove());
499		}
500		try {
501		q.remove();
502		shouldThrow();
503	<	} catch (NoSuchElementException success){
600	<	}
601	<	}
602	<
603	<	/**
604	<	* remove(x) removes x and returns true if present
605	<	*/
606	<	public void testRemoveElement() {
607	<	LinkedBlockingQueue q = populatedQueue(SIZE);
608	<	for (int i = 1; i < SIZE; i+=2) {
609	<	assertTrue(q.remove(new Integer(i)));
610	<	}
611	<	for (int i = 0; i < SIZE; i+=2) {
612	<	assertTrue(q.remove(new Integer(i)));
613	<	assertFalse(q.remove(new Integer(i+1)));
614	<	}
615	<	assertTrue(q.isEmpty());
503	>	} catch (NoSuchElementException success) {}
504		}
505
506		/**
507		* An add following remove(x) succeeds
508		*/
509	<	public void testRemoveElementAndAdd() {
510	<	try {
511	<	LinkedBlockingQueue q = new LinkedBlockingQueue();
512	<	assertTrue(q.add(new Integer(1)));
513	<	assertTrue(q.add(new Integer(2)));
514	<	assertTrue(q.remove(new Integer(1)));
515	<	assertTrue(q.remove(new Integer(2)));
516	<	assertTrue(q.add(new Integer(3)));
629	<	assertTrue(q.take() != null);
630	<	} catch (Exception e){
631	<	unexpectedException();
632	<	}
509	>	public void testRemoveElementAndAdd() throws InterruptedException {
510	>	LinkedBlockingQueue q = new LinkedBlockingQueue();
511	>	assertTrue(q.add(new Integer(1)));
512	>	assertTrue(q.add(new Integer(2)));
513	>	assertTrue(q.remove(new Integer(1)));
514	>	assertTrue(q.remove(new Integer(2)));
515	>	assertTrue(q.add(new Integer(3)));
516	>	assertNotNull(q.take());
517		}
518
519		/**
#	Line 688 | Line 572 | public class LinkedBlockingQueueTest ext
572		assertTrue(changed);
573
574		assertTrue(q.containsAll(p));
575	<	assertEquals(SIZE-i, q.size());
575	>	assertEquals(SIZE - i, q.size());
576		p.remove();
577		}
578		}
#	Line 701 | Line 585 | public class LinkedBlockingQueueTest ext
585		LinkedBlockingQueue q = populatedQueue(SIZE);
586		LinkedBlockingQueue p = populatedQueue(i);
587		assertTrue(q.removeAll(p));
588	<	assertEquals(SIZE-i, q.size());
588	>	assertEquals(SIZE - i, q.size());
589		for (int j = 0; j < i; ++j) {
590	<	Integer I = (Integer)(p.remove());
591	<	assertFalse(q.contains(I));
590	>	Integer x = (Integer)(p.remove());
591	>	assertFalse(q.contains(x));
592		}
593		}
594		}
595
596		/**
597	<	* toArray contains all elements
597	>	* toArray contains all elements in FIFO order
598		*/
599		public void testToArray() {
600		LinkedBlockingQueue q = populatedQueue(SIZE);
601	<	Object[] o = q.toArray();
602	<	try {
603	<	for(int i = 0; i < o.length; i++)
720	<	assertEquals(o[i], q.take());
721	<	} catch (InterruptedException e){
722	<	unexpectedException();
723	<	}
601	>	Object[] o = q.toArray();
602	>	for (int i = 0; i < o.length; i++)
603	>	assertSame(o[i], q.poll());
604		}
605
606		/**
607	<	* toArray(a) contains all elements
607	>	* toArray(a) contains all elements in FIFO order
608		*/
609	<	public void testToArray2() {
610	<	LinkedBlockingQueue q = populatedQueue(SIZE);
611	<	Integer[] ints = new Integer[SIZE];
612	<	ints = (Integer[])q.toArray(ints);
613	<	try {
614	<	for(int i = 0; i < ints.length; i++)
615	<	assertEquals(ints[i], q.take());
736	<	} catch (InterruptedException e){
737	<	unexpectedException();
738	<	}
609	>	public void testToArray2() throws InterruptedException {
610	>	LinkedBlockingQueue<Integer> q = populatedQueue(SIZE);
611	>	Integer[] ints = new Integer[SIZE];
612	>	Integer[] array = q.toArray(ints);
613	>	assertSame(ints, array);
614	>	for (int i = 0; i < ints.length; i++)
615	>	assertSame(ints[i], q.poll());
616		}
617
618		/**
619	<	* toArray(null) throws NPE
619	>	* toArray(incompatible array type) throws ArrayStoreException
620		*/
621	<	public void testToArray_BadArg() {
622	<	try {
623	<	LinkedBlockingQueue q = populatedQueue(SIZE);
624	<	Object o[] = q.toArray(null);
625	<	shouldThrow();
626	<	} catch(NullPointerException success){}
621	>	public void testToArray1_BadArg() {
622	>	LinkedBlockingQueue q = populatedQueue(SIZE);
623	>	try {
624	>	q.toArray(new String[10]);
625	>	shouldThrow();
626	>	} catch (ArrayStoreException success) {}
627		}
628
629		/**
630	<	* toArray with incompatible array type throws CCE
630	>	* iterator iterates through all elements
631		*/
632	<	public void testToArray1_BadArg() {
633	<	try {
634	<	LinkedBlockingQueue q = populatedQueue(SIZE);
635	<	Object o[] = q.toArray(new String[10] );
636	<	shouldThrow();
637	<	} catch(ArrayStoreException  success){}
638	<	}
632	>	public void testIterator() throws InterruptedException {
633	>	LinkedBlockingQueue q = populatedQueue(SIZE);
634	>	Iterator it = q.iterator();
635	>	int i;
636	>	for (i = 0; it.hasNext(); i++)
637	>	assertTrue(q.contains(it.next()));
638	>	assertEquals(i, SIZE);
639	>	assertIteratorExhausted(it);
640
641	+	it = q.iterator();
642	+	for (i = 0; it.hasNext(); i++)
643	+	assertEquals(it.next(), q.take());
644	+	assertEquals(i, SIZE);
645	+	assertIteratorExhausted(it);
646	+	}
647
648		/**
649	<	* iterator iterates through all elements
649	>	* iterator of empty collection has no elements
650		*/
651	<	public void testIterator() {
652	<	LinkedBlockingQueue q = populatedQueue(SIZE);
769	<	Iterator it = q.iterator();
770	<	try {
771	<	while(it.hasNext()){
772	<	assertEquals(it.next(), q.take());
773	<	}
774	<	} catch (InterruptedException e){
775	<	unexpectedException();
776	<	}
651	>	public void testEmptyIterator() {
652	>	assertIteratorExhausted(new LinkedBlockingQueue().iterator());
653		}
654
655		/**
656		* iterator.remove removes current element
657		*/
658	<	public void testIteratorRemove () {
658	>	public void testIteratorRemove() {
659		final LinkedBlockingQueue q = new LinkedBlockingQueue(3);
660		q.add(two);
661		q.add(one);
#	Line 790 | Line 666 | public class LinkedBlockingQueueTest ext
666		it.remove();
667
668		it = q.iterator();
669	<	assertEquals(it.next(), one);
670	<	assertEquals(it.next(), three);
669	>	assertSame(it.next(), one);
670	>	assertSame(it.next(), three);
671		assertFalse(it.hasNext());
672		}
673
798	–
674		/**
675		* iterator ordering is FIFO
676		*/
#	Line 807 | Line 682 | public class LinkedBlockingQueueTest ext
682		assertEquals(0, q.remainingCapacity());
683		int k = 0;
684		for (Iterator it = q.iterator(); it.hasNext();) {
685	<	int i = ((Integer)(it.next())).intValue();
811	<	assertEquals(++k, i);
685	>	assertEquals(++k, it.next());
686		}
687		assertEquals(3, k);
688		}
#	Line 816 | Line 690 | public class LinkedBlockingQueueTest ext
690		/**
691		* Modifications do not cause iterators to fail
692		*/
693	<	public void testWeaklyConsistentIteration () {
693	>	public void testWeaklyConsistentIteration() {
694		final LinkedBlockingQueue q = new LinkedBlockingQueue(3);
695		q.add(one);
696		q.add(two);
697		q.add(three);
698	<	try {
699	<	for (Iterator it = q.iterator(); it.hasNext();) {
700	<	q.remove();
827	<	it.next();
828	<	}
829	<	}
830	<	catch (ConcurrentModificationException e) {
831	<	unexpectedException();
698	>	for (Iterator it = q.iterator(); it.hasNext();) {
699	>	q.remove();
700	>	it.next();
701		}
702		assertEquals(0, q.size());
703		}
704
836	–
705		/**
706		* toString contains toStrings of elements
707		*/
#	Line 841 | Line 709 | public class LinkedBlockingQueueTest ext
709		LinkedBlockingQueue q = populatedQueue(SIZE);
710		String s = q.toString();
711		for (int i = 0; i < SIZE; ++i) {
712	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
712	>	assertTrue(s.contains(String.valueOf(i)));
713		}
714		}
715
848	–
716		/**
717		* offer transfers elements across Executor tasks
718		*/
#	Line 853 | Line 720 | public class LinkedBlockingQueueTest ext
720		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
721		q.add(one);
722		q.add(two);
723	<	ExecutorService executor = Executors.newFixedThreadPool(2);
724	<	executor.execute(new Runnable() {
725	<	public void run() {
726	<	threadAssertFalse(q.offer(three));
727	<	try {
728	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
729	<	threadAssertEquals(0, q.remainingCapacity());
730	<	}
731	<	catch (InterruptedException e) {
732	<	threadUnexpectedException();
866	<	}
867	<	}
868	<	});
869	<
870	<	executor.execute(new Runnable() {
871	<	public void run() {
872	<	try {
873	<	Thread.sleep(SMALL_DELAY_MS);
874	<	threadAssertEquals(one, q.take());
875	<	}
876	<	catch (InterruptedException e) {
877	<	threadUnexpectedException();
878	<	}
879	<	}
880	<	});
723	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
724	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
725	>	try (PoolCleaner cleaner = cleaner(executor)) {
726	>	executor.execute(new CheckedRunnable() {
727	>	public void realRun() throws InterruptedException {
728	>	assertFalse(q.offer(three));
729	>	threadsStarted.await();
730	>	assertTrue(q.offer(three, LONG_DELAY_MS, MILLISECONDS));
731	>	assertEquals(0, q.remainingCapacity());
732	>	}});
733
734	<	joinPool(executor);
734	>	executor.execute(new CheckedRunnable() {
735	>	public void realRun() throws InterruptedException {
736	>	threadsStarted.await();
737	>	assertSame(one, q.take());
738	>	}});
739	>	}
740		}
741
742		/**
743	<	* poll retrieves elements across Executor threads
743	>	* timed poll retrieves elements across Executor threads
744		*/
745		public void testPollInExecutor() {
746		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
747	<	ExecutorService executor = Executors.newFixedThreadPool(2);
748	<	executor.execute(new Runnable() {
749	<	public void run() {
750	<	threadAssertNull(q.poll());
751	<	try {
752	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
753	<	threadAssertTrue(q.isEmpty());
754	<	}
755	<	catch (InterruptedException e) {
756	<	threadUnexpectedException();
900	<	}
901	<	}
902	<	});
747	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
748	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
749	>	try (PoolCleaner cleaner = cleaner(executor)) {
750	>	executor.execute(new CheckedRunnable() {
751	>	public void realRun() throws InterruptedException {
752	>	assertNull(q.poll());
753	>	threadsStarted.await();
754	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
755	>	checkEmpty(q);
756	>	}});
757
758	<	executor.execute(new Runnable() {
759	<	public void run() {
760	<	try {
907	<	Thread.sleep(SMALL_DELAY_MS);
758	>	executor.execute(new CheckedRunnable() {
759	>	public void realRun() throws InterruptedException {
760	>	threadsStarted.await();
761		q.put(one);
762	<	}
910	<	catch (InterruptedException e) {
911	<	threadUnexpectedException();
912	<	}
913	<	}
914	<	});
915	<
916	<	joinPool(executor);
917	<	}
918	<
919	<	/**
920	<	* A deserialized serialized queue has same elements in same order
921	<	*/
922	<	public void testSerialization() {
923	<	LinkedBlockingQueue q = populatedQueue(SIZE);
924	<
925	<	try {
926	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
927	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
928	<	out.writeObject(q);
929	<	out.close();
930	<
931	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
932	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
933	<	LinkedBlockingQueue r = (LinkedBlockingQueue)in.readObject();
934	<	assertEquals(q.size(), r.size());
935	<	while (!q.isEmpty())
936	<	assertEquals(q.remove(), r.remove());
937	<	} catch(Exception e){
938	<	unexpectedException();
939	<	}
940	<	}
941	<
942	<	/**
943	<	* drainTo(null) throws NPE
944	<	*/
945	<	public void testDrainToNull() {
946	<	LinkedBlockingQueue q = populatedQueue(SIZE);
947	<	try {
948	<	q.drainTo(null);
949	<	shouldThrow();
950	<	} catch(NullPointerException success) {
762	>	}});
763		}
764		}
765
766		/**
767	<	* drainTo(this) throws IAE
767	>	* A deserialized serialized queue has same elements in same order
768		*/
769	<	public void testDrainToSelf() {
770	<	LinkedBlockingQueue q = populatedQueue(SIZE);
771	<	try {
772	<	q.drainTo(q);
773	<	shouldThrow();
774	<	} catch(IllegalArgumentException success) {
769	>	public void testSerialization() throws Exception {
770	>	Queue x = populatedQueue(SIZE);
771	>	Queue y = serialClone(x);
772	>
773	>	assertNotSame(x, y);
774	>	assertEquals(x.size(), y.size());
775	>	assertEquals(x.toString(), y.toString());
776	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
777	>	while (!x.isEmpty()) {
778	>	assertFalse(y.isEmpty());
779	>	assertEquals(x.remove(), y.remove());
780		}
781	+	assertTrue(y.isEmpty());
782		}
783
784		/**
#	Line 970 | Line 788 | public class LinkedBlockingQueueTest ext
788		LinkedBlockingQueue q = populatedQueue(SIZE);
789		ArrayList l = new ArrayList();
790		q.drainTo(l);
791	<	assertEquals(q.size(), 0);
792	<	assertEquals(l.size(), SIZE);
791	>	assertEquals(0, q.size());
792	>	assertEquals(SIZE, l.size());
793		for (int i = 0; i < SIZE; ++i)
794		assertEquals(l.get(i), new Integer(i));
795		q.add(zero);
#	Line 981 | Line 799 | public class LinkedBlockingQueueTest ext
799		assertTrue(q.contains(one));
800		l.clear();
801		q.drainTo(l);
802	<	assertEquals(q.size(), 0);
803	<	assertEquals(l.size(), 2);
802	>	assertEquals(0, q.size());
803	>	assertEquals(2, l.size());
804		for (int i = 0; i < 2; ++i)
805		assertEquals(l.get(i), new Integer(i));
806		}
#	Line 990 | Line 808 | public class LinkedBlockingQueueTest ext
808		/**
809		* drainTo empties full queue, unblocking a waiting put.
810		*/
811	<	public void testDrainToWithActivePut() {
811	>	public void testDrainToWithActivePut() throws InterruptedException {
812		final LinkedBlockingQueue q = populatedQueue(SIZE);
813	<	Thread t = new Thread(new Runnable() {
814	<	public void run() {
815	<	try {
816	<	q.put(new Integer(SIZE+1));
999	<	} catch (InterruptedException ie){
1000	<	threadUnexpectedException();
1001	<	}
1002	<	}
1003	<	});
1004	<	try {
1005	<	t.start();
1006	<	ArrayList l = new ArrayList();
1007	<	q.drainTo(l);
1008	<	assertTrue(l.size() >= SIZE);
1009	<	for (int i = 0; i < SIZE; ++i)
1010	<	assertEquals(l.get(i), new Integer(i));
1011	<	t.join();
1012	<	assertTrue(q.size() + l.size() >= SIZE);
1013	<	} catch(Exception e){
1014	<	unexpectedException();
1015	<	}
1016	<	}
813	>	Thread t = new Thread(new CheckedRunnable() {
814	>	public void realRun() throws InterruptedException {
815	>	q.put(new Integer(SIZE + 1));
816	>	}});
817
818	<	/**
819	<	* drainTo(null, n) throws NPE
820	<	*/
821	<	public void testDrainToNullN() {
822	<	LinkedBlockingQueue q = populatedQueue(SIZE);
823	<	try {
824	<	q.drainTo(null, 0);
825	<	shouldThrow();
1026	<	} catch(NullPointerException success) {
1027	<	}
1028	<	}
1029	<
1030	<	/**
1031	<	* drainTo(this, n) throws IAE
1032	<	*/
1033	<	public void testDrainToSelfN() {
1034	<	LinkedBlockingQueue q = populatedQueue(SIZE);
1035	<	try {
1036	<	q.drainTo(q, 0);
1037	<	shouldThrow();
1038	<	} catch(IllegalArgumentException success) {
1039	<	}
818	>	t.start();
819	>	ArrayList l = new ArrayList();
820	>	q.drainTo(l);
821	>	assertTrue(l.size() >= SIZE);
822	>	for (int i = 0; i < SIZE; ++i)
823	>	assertEquals(l.get(i), new Integer(i));
824	>	t.join();
825	>	assertTrue(q.size() + l.size() >= SIZE);
826		}
827
828		/**
829	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
829	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
830		*/
831		public void testDrainToN() {
832		LinkedBlockingQueue q = new LinkedBlockingQueue();
833		for (int i = 0; i < SIZE + 2; ++i) {
834	<	for(int j = 0; j < SIZE; j++)
834	>	for (int j = 0; j < SIZE; j++)
835		assertTrue(q.offer(new Integer(j)));
836		ArrayList l = new ArrayList();
837		q.drainTo(l, i);
838	<	int k = (i < SIZE)? i : SIZE;
839	<	assertEquals(l.size(), k);
840	<	assertEquals(q.size(), SIZE-k);
838	>	int k = (i < SIZE) ? i : SIZE;
839	>	assertEquals(k, l.size());
840	>	assertEquals(SIZE - k, q.size());
841		for (int j = 0; j < k; ++j)
842		assertEquals(l.get(j), new Integer(j));
843	<	while (q.poll() != null) ;
843	>	do {} while (q.poll() != null);
844	>	}
845	>	}
846	>
847	>	/**
848	>	* remove(null), contains(null) always return false
849	>	*/
850	>	public void testNeverContainsNull() {
851	>	Collection<?>[] qs = {
852	>	new LinkedBlockingQueue<Object>(),
853	>	populatedQueue(2),
854	>	};
855	>
856	>	for (Collection<?> q : qs) {
857	>	assertFalse(q.contains(null));
858	>	assertFalse(q.remove(null));
859		}
860		}
861

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