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Comparing jsr166/src/test/tck/LinkedBlockingQueueTest.java (file contents):
Revision 1.16 by jsr166, Sat Nov 21 02:33:20 2009 UTC vs.
Revision 1.64 by jsr166, Sun Oct 16 20:44:18 2016 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
8
9	–	import junit.framework.*;
10	–	import java.util.*;
11	–	import java.util.concurrent.*;
9		import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	<	import java.io.*;
10	>
11	>	import java.util.ArrayList;
12	>	import java.util.Arrays;
13	>	import java.util.Collection;
14	>	import java.util.Iterator;
15	>	import java.util.NoSuchElementException;
16	>	import java.util.Queue;
17	>	import java.util.concurrent.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
25	–
49		/**
50	<	* Create a queue of given size containing consecutive
51	<	* Integers 0 ... n.
50	>	* Returns a new queue of given size containing consecutive
51	>	* Integers 0 ... n - 1.
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)));
59		assertFalse(q.isEmpty());
60		assertEquals(0, q.remainingCapacity());
61		assertEquals(n, q.size());
62	+	assertEquals((Integer) 0, q.peek());
63		return q;
64		}
65
#	Line 48 | Line 73 | public class LinkedBlockingQueueTest ext
73		}
74
75		/**
76	<	* Constructor throws IAE if  capacity argument nonpositive
76	>	* Constructor throws IllegalArgumentException if capacity argument nonpositive
77		*/
78		public void testConstructor2() {
79		try {
80	<	LinkedBlockingQueue q = new LinkedBlockingQueue(0);
80	>	new LinkedBlockingQueue(0);
81		shouldThrow();
82	<	}
58	<	catch (IllegalArgumentException success) {}
82	>	} catch (IllegalArgumentException success) {}
83		}
84
85		/**
86	<	* Initializing from null Collection throws NPE
86	>	* Initializing from null Collection throws NullPointerException
87		*/
88		public void testConstructor3() {
89		try {
90	<	LinkedBlockingQueue q = new LinkedBlockingQueue(null);
90	>	new LinkedBlockingQueue(null);
91		shouldThrow();
92	<	}
69	<	catch (NullPointerException success) {}
92	>	} catch (NullPointerException success) {}
93		}
94
95		/**
96	<	* Initializing from Collection of null elements throws NPE
96	>	* Initializing from Collection of null elements throws NullPointerException
97		*/
98		public void testConstructor4() {
99	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
100		try {
101	<	Integer[] ints = new Integer[SIZE];
78	<	LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints));
101	>	new LinkedBlockingQueue(elements);
102		shouldThrow();
103	<	}
81	<	catch (NullPointerException success) {}
103	>	} catch (NullPointerException success) {}
104		}
105
106		/**
107	<	* Initializing from Collection with some null elements throws NPE
107	>	* Initializing from Collection with some null elements throws
108	>	* NullPointerException
109		*/
110		public void testConstructor5() {
111	+	Integer[] ints = new Integer[SIZE];
112	+	for (int i = 0; i < SIZE - 1; ++i)
113	+	ints[i] = new Integer(i);
114	+	Collection<Integer> elements = Arrays.asList(ints);
115		try {
116	<	Integer[] ints = new Integer[SIZE];
90	<	for (int i = 0; i < SIZE-1; ++i)
91	<	ints[i] = new Integer(i);
92	<	LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints));
116	>	new LinkedBlockingQueue(elements);
117		shouldThrow();
118	<	}
95	<	catch (NullPointerException success) {}
118	>	} catch (NullPointerException success) {}
119		}
120
121		/**
122		* Queue contains all elements of collection used to initialize
123		*/
124		public void testConstructor6() {
125	<	try {
126	<	Integer[] ints = new Integer[SIZE];
127	<	for (int i = 0; i < SIZE; ++i)
128	<	ints[i] = new Integer(i);
129	<	LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints));
130	<	for (int i = 0; i < SIZE; ++i)
108	<	assertEquals(ints[i], q.poll());
109	<	}
110	<	finally {}
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)
130	>	assertEquals(ints[i], q.poll());
131		}
132
133		/**
#	Line 129 | Line 149 | public class LinkedBlockingQueueTest ext
149		* remainingCapacity decreases on add, increases on remove
150		*/
151		public void testRemainingCapacity() {
152	<	LinkedBlockingQueue q = populatedQueue(SIZE);
152	>	BlockingQueue q = populatedQueue(SIZE);
153		for (int i = 0; i < SIZE; ++i) {
154		assertEquals(i, q.remainingCapacity());
155	<	assertEquals(SIZE-i, q.size());
156	<	q.remove();
155	>	assertEquals(SIZE, q.size() + q.remainingCapacity());
156	>	assertEquals(i, q.remove());
157		}
158		for (int i = 0; i < SIZE; ++i) {
159	<	assertEquals(SIZE-i, q.remainingCapacity());
160	<	assertEquals(i, q.size());
161	<	q.add(new Integer(i));
159	>	assertEquals(SIZE - i, q.remainingCapacity());
160	>	assertEquals(SIZE, q.size() + q.remainingCapacity());
161	>	assertTrue(q.add(i));
162		}
163		}
164
165		/**
146	–	* offer(null) throws NPE
147	–	*/
148	–	public void testOfferNull() {
149	–	try {
150	–	LinkedBlockingQueue q = new LinkedBlockingQueue(1);
151	–	q.offer(null);
152	–	shouldThrow();
153	–	} catch (NullPointerException success) { }
154	–	}
155	–
156	–	/**
157	–	* add(null) throws NPE
158	–	*/
159	–	public void testAddNull() {
160	–	try {
161	–	LinkedBlockingQueue q = new LinkedBlockingQueue(1);
162	–	q.add(null);
163	–	shouldThrow();
164	–	} catch (NullPointerException success) { }
165	–	}
166	–
167	–	/**
166		* Offer succeeds if not full; fails if full
167		*/
168		public void testOffer() {
#	Line 174 | Line 172 | public class LinkedBlockingQueueTest ext
172		}
173
174		/**
175	<	* add succeeds if not full; throws ISE if full
175	>	* add succeeds if not full; throws IllegalStateException if full
176		*/
177		public void testAdd() {
178	+	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
179	+	for (int i = 0; i < SIZE; ++i)
180	+	assertTrue(q.add(new Integer(i)));
181	+	assertEquals(0, q.remainingCapacity());
182		try {
181	–	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
182	–	for (int i = 0; i < SIZE; ++i) {
183	–	assertTrue(q.add(new Integer(i)));
184	–	}
185	–	assertEquals(0, q.remainingCapacity());
183		q.add(new Integer(SIZE));
187	–	} catch (IllegalStateException success) {
188	–	}
189	–	}
190	–
191	–	/**
192	–	* addAll(null) throws NPE
193	–	*/
194	–	public void testAddAll1() {
195	–	try {
196	–	LinkedBlockingQueue q = new LinkedBlockingQueue(1);
197	–	q.addAll(null);
184		shouldThrow();
185	<	}
200	<	catch (NullPointerException success) {}
185	>	} catch (IllegalStateException success) {}
186		}
187
188		/**
189	<	* addAll(this) throws IAE
189	>	* addAll(this) throws IllegalArgumentException
190		*/
191		public void testAddAllSelf() {
192	+	LinkedBlockingQueue q = populatedQueue(SIZE);
193		try {
208	–	LinkedBlockingQueue q = populatedQueue(SIZE);
194		q.addAll(q);
195		shouldThrow();
196	<	}
212	<	catch (IllegalArgumentException success) {}
196	>	} catch (IllegalArgumentException success) {}
197		}
198
199		/**
216	–	* addAll of a collection with null elements throws NPE
217	–	*/
218	–	public void testAddAll2() {
219	–	try {
220	–	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
221	–	Integer[] ints = new Integer[SIZE];
222	–	q.addAll(Arrays.asList(ints));
223	–	shouldThrow();
224	–	}
225	–	catch (NullPointerException success) {}
226	–	}
227	–	/**
200		* addAll of a collection with any null elements throws NPE after
201		* possibly adding some elements
202		*/
203		public void testAddAll3() {
204	+	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
205	+	Integer[] ints = new Integer[SIZE];
206	+	for (int i = 0; i < SIZE - 1; ++i)
207	+	ints[i] = new Integer(i);
208	+	Collection<Integer> elements = Arrays.asList(ints);
209		try {
210	<	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
234	<	Integer[] ints = new Integer[SIZE];
235	<	for (int i = 0; i < SIZE-1; ++i)
236	<	ints[i] = new Integer(i);
237	<	q.addAll(Arrays.asList(ints));
210	>	q.addAll(elements);
211		shouldThrow();
212	<	}
240	<	catch (NullPointerException success) {}
212	>	} catch (NullPointerException success) {}
213		}
214	+
215		/**
216	<	* addAll throws ISE if not enough room
216	>	* addAll throws IllegalStateException if not enough room
217		*/
218		public void testAddAll4() {
219	+	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE - 1);
220	+	Integer[] ints = new Integer[SIZE];
221	+	for (int i = 0; i < SIZE; ++i)
222	+	ints[i] = new Integer(i);
223	+	Collection<Integer> elements = Arrays.asList(ints);
224		try {
225	<	LinkedBlockingQueue q = new LinkedBlockingQueue(1);
248	<	Integer[] ints = new Integer[SIZE];
249	<	for (int i = 0; i < SIZE; ++i)
250	<	ints[i] = new Integer(i);
251	<	q.addAll(Arrays.asList(ints));
225	>	q.addAll(elements);
226		shouldThrow();
227	<	}
254	<	catch (IllegalStateException success) {}
227	>	} catch (IllegalStateException success) {}
228		}
229	+
230		/**
231		* Queue contains all elements, in traversal order, of successful addAll
232		*/
233		public void testAddAll5() {
234	<	try {
235	<	Integer[] empty = new Integer[0];
236	<	Integer[] ints = new Integer[SIZE];
237	<	for (int i = 0; i < SIZE; ++i)
238	<	ints[i] = new Integer(i);
239	<	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
240	<	assertFalse(q.addAll(Arrays.asList(empty)));
241	<	assertTrue(q.addAll(Arrays.asList(ints)));
242	<	for (int i = 0; i < SIZE; ++i)
269	<	assertEquals(ints[i], q.poll());
270	<	}
271	<	finally {}
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)
242	>	assertEquals(ints[i], q.poll());
243		}
244
245		/**
275	–	* put(null) throws NPE
276	–	*/
277	–	public void testPutNull() {
278	–	try {
279	–	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
280	–	q.put(null);
281	–	shouldThrow();
282	–	}
283	–	catch (NullPointerException success) {
284	–	}
285	–	catch (InterruptedException ie) {
286	–	unexpectedException();
287	–	}
288	–	}
289	–
290	–	/**
246		* all elements successfully put are contained
247		*/
248	<	public void testPut() {
249	<	try {
250	<	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
251	<	for (int i = 0; i < SIZE; ++i) {
252	<	Integer I = new Integer(i);
253	<	q.put(I);
299	<	assertTrue(q.contains(I));
300	<	}
301	<	assertEquals(0, q.remainingCapacity());
302	<	}
303	<	catch (InterruptedException ie) {
304	<	unexpectedException();
248	>	public void testPut() throws InterruptedException {
249	>	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
250	>	for (int i = 0; i < SIZE; ++i) {
251	>	Integer x = new Integer(i);
252	>	q.put(x);
253	>	assertTrue(q.contains(x));
254		}
255	+	assertEquals(0, q.remainingCapacity());
256		}
257
258		/**
259		* put blocks interruptibly if full
260		*/
261	<	public void testBlockingPut() {
262	<	Thread t = new Thread(new Runnable() {
263	<	public void run() {
264	<	int added = 0;
265	<	try {
266	<	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
267	<	for (int i = 0; i < SIZE; ++i) {
268	<	q.put(new Integer(i));
269	<	++added;
270	<	}
271	<	q.put(new Integer(SIZE));
272	<	threadShouldThrow();
273	<	} catch (InterruptedException ie) {
274	<	threadAssertEquals(added, SIZE);
275	<	}
276	<	}});
277	<	t.start();
278	<	try {
279	<	Thread.sleep(SHORT_DELAY_MS);
280	<	t.interrupt();
281	<	t.join();
282	<	}
283	<	catch (InterruptedException ie) {
284	<	unexpectedException();
285	<	}
261	>	public void testBlockingPut() throws InterruptedException {
262	>	final LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
263	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
264	>	Thread t = newStartedThread(new CheckedRunnable() {
265	>	public void realRun() throws InterruptedException {
266	>	for (int i = 0; i < SIZE; ++i)
267	>	q.put(i);
268	>	assertEquals(SIZE, q.size());
269	>	assertEquals(0, q.remainingCapacity());
270	>
271	>	Thread.currentThread().interrupt();
272	>	try {
273	>	q.put(99);
274	>	shouldThrow();
275	>	} catch (InterruptedException success) {}
276	>	assertFalse(Thread.interrupted());
277	>
278	>	pleaseInterrupt.countDown();
279	>	try {
280	>	q.put(99);
281	>	shouldThrow();
282	>	} catch (InterruptedException success) {}
283	>	assertFalse(Thread.interrupted());
284	>	}});
285	>
286	>	await(pleaseInterrupt);
287	>	assertThreadStaysAlive(t);
288	>	t.interrupt();
289	>	awaitTermination(t);
290	>	assertEquals(SIZE, q.size());
291	>	assertEquals(0, q.remainingCapacity());
292		}
293
294		/**
295	<	* put blocks waiting for take when full
295	>	* put blocks interruptibly waiting for take when full
296		*/
297	<	public void testPutWithTake() {
297	>	public void testPutWithTake() throws InterruptedException {
298	>	final int capacity = 2;
299		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
300	<	Thread t = new Thread(new Runnable() {
301	<	public void run() {
302	<	int added = 0;
303	<	try {
304	<	q.put(new Object());
305	<	++added;
306	<	q.put(new Object());
307	<	++added;
308	<	q.put(new Object());
309	<	++added;
310	<	q.put(new Object());
311	<	++added;
312	<	threadShouldThrow();
313	<	} catch (InterruptedException e) {
314	<	threadAssertTrue(added >= 2);
315	<	}
316	<	}
317	<	});
318	<	try {
319	<	t.start();
320	<	Thread.sleep(SHORT_DELAY_MS);
321	<	q.take();
322	<	t.interrupt();
323	<	t.join();
324	<	} catch (Exception e) {
325	<	unexpectedException();
369	<	}
300	>	final CountDownLatch pleaseTake = new CountDownLatch(1);
301	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
302	>	Thread t = newStartedThread(new CheckedRunnable() {
303	>	public void realRun() throws InterruptedException {
304	>	for (int i = 0; i < capacity; i++)
305	>	q.put(i);
306	>	pleaseTake.countDown();
307	>	q.put(86);
308	>
309	>	pleaseInterrupt.countDown();
310	>	try {
311	>	q.put(99);
312	>	shouldThrow();
313	>	} catch (InterruptedException success) {}
314	>	assertFalse(Thread.interrupted());
315	>	}});
316	>
317	>	await(pleaseTake);
318	>	assertEquals(0, q.remainingCapacity());
319	>	assertEquals(0, q.take());
320	>
321	>	await(pleaseInterrupt);
322	>	assertThreadStaysAlive(t);
323	>	t.interrupt();
324	>	awaitTermination(t);
325	>	assertEquals(0, q.remainingCapacity());
326		}
327
328		/**
#	Line 374 | Line 330 | public class LinkedBlockingQueueTest ext
330		*/
331		public void testTimedOffer() {
332		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
333	<	Thread t = new Thread(new Runnable() {
334	<	public void run() {
335	<	try {
336	<	q.put(new Object());
337	<	q.put(new Object());
338	<	threadAssertFalse(q.offer(new Object(), SHORT_DELAY_MS, MILLISECONDS));
339	<	q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS);
340	<	threadShouldThrow();
341	<	} catch (InterruptedException success) {}
342	<	}
343	<	});
344	<
345	<	try {
346	<	t.start();
347	<	Thread.sleep(SMALL_DELAY_MS);
348	<	t.interrupt();
349	<	t.join();
350	<	} catch (Exception e) {
351	<	unexpectedException();
396	<	}
333	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
334	>	Thread t = newStartedThread(new CheckedRunnable() {
335	>	public void realRun() throws InterruptedException {
336	>	q.put(new Object());
337	>	q.put(new Object());
338	>	long startTime = System.nanoTime();
339	>	assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS));
340	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
341	>	pleaseInterrupt.countDown();
342	>	try {
343	>	q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS);
344	>	shouldThrow();
345	>	} catch (InterruptedException success) {}
346	>	}});
347	>
348	>	await(pleaseInterrupt);
349	>	assertThreadStaysAlive(t);
350	>	t.interrupt();
351	>	awaitTermination(t);
352		}
353
354		/**
355		* take retrieves elements in FIFO order
356		*/
357	<	public void testTake() {
358	<	try {
359	<	LinkedBlockingQueue q = populatedQueue(SIZE);
360	<	for (int i = 0; i < SIZE; ++i) {
406	<	assertEquals(i, ((Integer)q.take()).intValue());
407	<	}
408	<	} catch (InterruptedException e) {
409	<	unexpectedException();
357	>	public void testTake() throws InterruptedException {
358	>	LinkedBlockingQueue q = populatedQueue(SIZE);
359	>	for (int i = 0; i < SIZE; ++i) {
360	>	assertEquals(i, q.take());
361		}
362		}
363
364		/**
365	<	* take blocks interruptibly when empty
365	>	* Take removes existing elements until empty, then blocks interruptibly
366		*/
367	<	public void testTakeFromEmpty() {
368	<	final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
369	<	Thread t = new Thread(new Runnable() {
370	<	public void run() {
371	<	try {
372	<	q.take();
373	<	threadShouldThrow();
423	<	} catch (InterruptedException success) { }
367	>	public void testBlockingTake() throws InterruptedException {
368	>	final BlockingQueue q = populatedQueue(SIZE);
369	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
370	>	Thread t = newStartedThread(new CheckedRunnable() {
371	>	public void realRun() throws InterruptedException {
372	>	for (int i = 0; i < SIZE; ++i) {
373	>	assertEquals(i, q.take());
374		}
425	–	});
426	–	try {
427	–	t.start();
428	–	Thread.sleep(SHORT_DELAY_MS);
429	–	t.interrupt();
430	–	t.join();
431	–	} catch (Exception e) {
432	–	unexpectedException();
433	–	}
434	–	}
375
376	<	/**
377	<	* Take removes existing elements until empty, then blocks interruptibly
378	<	*/
379	<	public void testBlockingTake() {
380	<	Thread t = new Thread(new Runnable() {
381	<	public void run() {
442	<	try {
443	<	LinkedBlockingQueue q = populatedQueue(SIZE);
444	<	for (int i = 0; i < SIZE; ++i) {
445	<	assertEquals(i, ((Integer)q.take()).intValue());
446	<	}
447	<	q.take();
448	<	threadShouldThrow();
449	<	} catch (InterruptedException success) {
450	<	}
451	<	}});
452	<	t.start();
453	<	try {
454	<	Thread.sleep(SHORT_DELAY_MS);
455	<	t.interrupt();
456	<	t.join();
457	<	}
458	<	catch (InterruptedException ie) {
459	<	unexpectedException();
460	<	}
461	<	}
376	>	Thread.currentThread().interrupt();
377	>	try {
378	>	q.take();
379	>	shouldThrow();
380	>	} catch (InterruptedException success) {}
381	>	assertFalse(Thread.interrupted());
382
383	+	pleaseInterrupt.countDown();
384	+	try {
385	+	q.take();
386	+	shouldThrow();
387	+	} catch (InterruptedException success) {}
388	+	assertFalse(Thread.interrupted());
389	+	}});
390	+
391	+	await(pleaseInterrupt);
392	+	assertThreadStaysAlive(t);
393	+	t.interrupt();
394	+	awaitTermination(t);
395	+	}
396
397		/**
398		* poll succeeds unless empty
#	Line 467 | Line 400 | public class LinkedBlockingQueueTest ext
400		public void testPoll() {
401		LinkedBlockingQueue q = populatedQueue(SIZE);
402		for (int i = 0; i < SIZE; ++i) {
403	<	assertEquals(i, ((Integer)q.poll()).intValue());
403	>	assertEquals(i, q.poll());
404		}
405		assertNull(q.poll());
406		}
407
408		/**
409	<	* timed pool with zero timeout succeeds when non-empty, else times out
409	>	* timed poll with zero timeout succeeds when non-empty, else times out
410		*/
411	<	public void testTimedPoll0() {
412	<	try {
413	<	LinkedBlockingQueue q = populatedQueue(SIZE);
414	<	for (int i = 0; i < SIZE; ++i) {
482	<	assertEquals(i, ((Integer)q.poll(0, MILLISECONDS)).intValue());
483	<	}
484	<	assertNull(q.poll(0, MILLISECONDS));
485	<	} catch (InterruptedException e) {
486	<	unexpectedException();
411	>	public void testTimedPoll0() throws InterruptedException {
412	>	LinkedBlockingQueue q = populatedQueue(SIZE);
413	>	for (int i = 0; i < SIZE; ++i) {
414	>	assertEquals(i, q.poll(0, MILLISECONDS));
415		}
416	+	assertNull(q.poll(0, MILLISECONDS));
417		}
418
419		/**
420	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
420	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
421		*/
422	<	public void testTimedPoll() {
423	<	try {
424	<	LinkedBlockingQueue q = populatedQueue(SIZE);
425	<	for (int i = 0; i < SIZE; ++i) {
426	<	assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, MILLISECONDS)).intValue());
427	<	}
428	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
429	<	} catch (InterruptedException e) {
430	<	unexpectedException();
431	<	}
422	>	public void testTimedPoll() throws InterruptedException {
423	>	LinkedBlockingQueue<Integer> q = populatedQueue(SIZE);
424	>	for (int i = 0; i < SIZE; ++i) {
425	>	long startTime = System.nanoTime();
426	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
427	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
428	>	}
429	>	long startTime = System.nanoTime();
430	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
431	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
432	>	checkEmpty(q);
433		}
434
435		/**
436		* Interrupted timed poll throws InterruptedException instead of
437		* returning timeout status
438		*/
439	<	public void testInterruptedTimedPoll() {
440	<	Thread t = new Thread(new Runnable() {
441	<	public void run() {
442	<	try {
443	<	LinkedBlockingQueue q = populatedQueue(SIZE);
444	<	for (int i = 0; i < SIZE; ++i) {
445	<	threadAssertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, MILLISECONDS)).intValue());
446	<	}
517	<	threadAssertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
518	<	} catch (InterruptedException success) {
519	<	}
520	<	}});
521	<	t.start();
522	<	try {
523	<	Thread.sleep(SHORT_DELAY_MS);
524	<	t.interrupt();
525	<	t.join();
526	<	}
527	<	catch (InterruptedException ie) {
528	<	unexpectedException();
529	<	}
530	<	}
531	<
532	<	/**
533	<	*  timed poll before a delayed offer fails; after offer succeeds;
534	<	*  on interruption throws
535	<	*/
536	<	public void testTimedPollWithOffer() {
537	<	final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
538	<	Thread t = new Thread(new Runnable() {
539	<	public void run() {
540	<	try {
541	<	threadAssertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
542	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
543	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
544	<	threadShouldThrow();
545	<	} catch (InterruptedException success) { }
439	>	public void testInterruptedTimedPoll() throws InterruptedException {
440	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
441	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
442	>	Thread t = newStartedThread(new CheckedRunnable() {
443	>	public void realRun() throws InterruptedException {
444	>	long startTime = System.nanoTime();
445	>	for (int i = 0; i < SIZE; ++i) {
446	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
447		}
448	<	});
449	<	try {
450	<	t.start();
451	<	Thread.sleep(SMALL_DELAY_MS);
452	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
453	<	t.interrupt();
454	<	t.join();
455	<	} catch (Exception e) {
456	<	unexpectedException();
457	<	}
448	>	aboutToWait.countDown();
449	>	try {
450	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
451	>	shouldThrow();
452	>	} catch (InterruptedException success) {
453	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
454	>	}
455	>	}});
456	>
457	>	await(aboutToWait);
458	>	waitForThreadToEnterWaitState(t);
459	>	t.interrupt();
460	>	awaitTermination(t);
461	>	checkEmpty(q);
462		}
463
464		/**
#	Line 562 | Line 467 | public class LinkedBlockingQueueTest ext
467		public void testPeek() {
468		LinkedBlockingQueue q = populatedQueue(SIZE);
469		for (int i = 0; i < SIZE; ++i) {
470	<	assertEquals(i, ((Integer)q.peek()).intValue());
471	<	q.poll();
470	>	assertEquals(i, q.peek());
471	>	assertEquals(i, q.poll());
472		assertTrue(q.peek() == null ||
473	<	i != ((Integer)q.peek()).intValue());
473	>	!q.peek().equals(i));
474		}
475		assertNull(q.peek());
476		}
#	Line 576 | Line 481 | public class LinkedBlockingQueueTest ext
481		public void testElement() {
482		LinkedBlockingQueue q = populatedQueue(SIZE);
483		for (int i = 0; i < SIZE; ++i) {
484	<	assertEquals(i, ((Integer)q.element()).intValue());
485	<	q.poll();
484	>	assertEquals(i, q.element());
485	>	assertEquals(i, q.poll());
486		}
487		try {
488		q.element();
489		shouldThrow();
490	<	}
586	<	catch (NoSuchElementException success) {}
490	>	} catch (NoSuchElementException success) {}
491		}
492
493		/**
#	Line 592 | Line 496 | public class LinkedBlockingQueueTest ext
496		public void testRemove() {
497		LinkedBlockingQueue q = populatedQueue(SIZE);
498		for (int i = 0; i < SIZE; ++i) {
499	<	assertEquals(i, ((Integer)q.remove()).intValue());
499	>	assertEquals(i, q.remove());
500		}
501		try {
502		q.remove();
503		shouldThrow();
504	<	} catch (NoSuchElementException success) {
601	<	}
602	<	}
603	<
604	<	/**
605	<	* remove(x) removes x and returns true if present
606	<	*/
607	<	public void testRemoveElement() {
608	<	LinkedBlockingQueue q = populatedQueue(SIZE);
609	<	for (int i = 1; i < SIZE; i+=2) {
610	<	assertTrue(q.remove(new Integer(i)));
611	<	}
612	<	for (int i = 0; i < SIZE; i+=2) {
613	<	assertTrue(q.remove(new Integer(i)));
614	<	assertFalse(q.remove(new Integer(i+1)));
615	<	}
616	<	assertTrue(q.isEmpty());
504	>	} catch (NoSuchElementException success) {}
505		}
506
507		/**
508		* An add following remove(x) succeeds
509		*/
510	<	public void testRemoveElementAndAdd() {
511	<	try {
512	<	LinkedBlockingQueue q = new LinkedBlockingQueue();
513	<	assertTrue(q.add(new Integer(1)));
514	<	assertTrue(q.add(new Integer(2)));
515	<	assertTrue(q.remove(new Integer(1)));
516	<	assertTrue(q.remove(new Integer(2)));
517	<	assertTrue(q.add(new Integer(3)));
630	<	assertTrue(q.take() != null);
631	<	} catch (Exception e) {
632	<	unexpectedException();
633	<	}
510	>	public void testRemoveElementAndAdd() throws InterruptedException {
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)));
517	>	assertNotNull(q.take());
518		}
519
520		/**
#	Line 689 | Line 573 | public class LinkedBlockingQueueTest ext
573		assertTrue(changed);
574
575		assertTrue(q.containsAll(p));
576	<	assertEquals(SIZE-i, q.size());
576	>	assertEquals(SIZE - i, q.size());
577		p.remove();
578		}
579		}
#	Line 702 | Line 586 | public class LinkedBlockingQueueTest ext
586		LinkedBlockingQueue q = populatedQueue(SIZE);
587		LinkedBlockingQueue p = populatedQueue(i);
588		assertTrue(q.removeAll(p));
589	<	assertEquals(SIZE-i, q.size());
589	>	assertEquals(SIZE - i, q.size());
590		for (int j = 0; j < i; ++j) {
591	<	Integer I = (Integer)(p.remove());
592	<	assertFalse(q.contains(I));
591	>	Integer x = (Integer)(p.remove());
592	>	assertFalse(q.contains(x));
593		}
594		}
595		}
596
597		/**
598	<	* toArray contains all elements
598	>	* toArray contains all elements in FIFO order
599		*/
600		public void testToArray() {
601		LinkedBlockingQueue q = populatedQueue(SIZE);
602		Object[] o = q.toArray();
719	–	try {
603		for (int i = 0; i < o.length; i++)
604	<	assertEquals(o[i], q.take());
722	<	} catch (InterruptedException e) {
723	<	unexpectedException();
724	<	}
604	>	assertSame(o[i], q.poll());
605		}
606
607		/**
608	<	* toArray(a) contains all elements
608	>	* toArray(a) contains all elements in FIFO order
609		*/
610	<	public void testToArray2() {
611	<	LinkedBlockingQueue q = populatedQueue(SIZE);
610	>	public void testToArray2() throws InterruptedException {
611	>	LinkedBlockingQueue<Integer> q = populatedQueue(SIZE);
612		Integer[] ints = new Integer[SIZE];
613	<	ints = (Integer[])q.toArray(ints);
614	<	try {
615	<	for (int i = 0; i < ints.length; i++)
616	<	assertEquals(ints[i], q.take());
737	<	} catch (InterruptedException e) {
738	<	unexpectedException();
739	<	}
740	<	}
741	<
742	<	/**
743	<	* toArray(null) throws NPE
744	<	*/
745	<	public void testToArray_BadArg() {
746	<	try {
747	<	LinkedBlockingQueue q = populatedQueue(SIZE);
748	<	Object o[] = q.toArray(null);
749	<	shouldThrow();
750	<	} catch (NullPointerException success) {}
613	>	Integer[] array = q.toArray(ints);
614	>	assertSame(ints, array);
615	>	for (int i = 0; i < ints.length; i++)
616	>	assertSame(ints[i], q.poll());
617		}
618
619		/**
620	<	* toArray with incompatible array type throws CCE
620	>	* toArray(incompatible array type) throws ArrayStoreException
621		*/
622		public void testToArray1_BadArg() {
623	+	LinkedBlockingQueue q = populatedQueue(SIZE);
624		try {
625	<	LinkedBlockingQueue q = populatedQueue(SIZE);
759	<	Object o[] = q.toArray(new String[10] );
625	>	q.toArray(new String[10]);
626		shouldThrow();
627	<	} catch (ArrayStoreException  success) {}
627	>	} catch (ArrayStoreException success) {}
628		}
629
764	–
630		/**
631		* iterator iterates through all elements
632		*/
633	<	public void testIterator() {
633	>	public void testIterator() throws InterruptedException {
634		LinkedBlockingQueue q = populatedQueue(SIZE);
635		Iterator it = q.iterator();
636	<	try {
637	<	while (it.hasNext()) {
638	<	assertEquals(it.next(), q.take());
639	<	}
640	<	} catch (InterruptedException e) {
641	<	unexpectedException();
642	<	}
636	>	int i;
637	>	for (i = 0; it.hasNext(); i++)
638	>	assertTrue(q.contains(it.next()));
639	>	assertEquals(i, SIZE);
640	>	assertIteratorExhausted(it);
641	>
642	>	it = q.iterator();
643	>	for (i = 0; it.hasNext(); i++)
644	>	assertEquals(it.next(), q.take());
645	>	assertEquals(i, SIZE);
646	>	assertIteratorExhausted(it);
647	>	}
648	>
649	>	/**
650	>	* iterator of empty collection has no elements
651	>	*/
652	>	public void testEmptyIterator() {
653	>	assertIteratorExhausted(new LinkedBlockingQueue().iterator());
654		}
655
656		/**
657		* iterator.remove removes current element
658		*/
659	<	public void testIteratorRemove () {
659	>	public void testIteratorRemove() {
660		final LinkedBlockingQueue q = new LinkedBlockingQueue(3);
661		q.add(two);
662		q.add(one);
#	Line 791 | Line 667 | public class LinkedBlockingQueueTest ext
667		it.remove();
668
669		it = q.iterator();
670	<	assertEquals(it.next(), one);
671	<	assertEquals(it.next(), three);
670	>	assertSame(it.next(), one);
671	>	assertSame(it.next(), three);
672		assertFalse(it.hasNext());
673		}
674
799	–
675		/**
676		* iterator ordering is FIFO
677		*/
#	Line 808 | Line 683 | public class LinkedBlockingQueueTest ext
683		assertEquals(0, q.remainingCapacity());
684		int k = 0;
685		for (Iterator it = q.iterator(); it.hasNext();) {
686	<	int i = ((Integer)(it.next())).intValue();
812	<	assertEquals(++k, i);
686	>	assertEquals(++k, it.next());
687		}
688		assertEquals(3, k);
689		}
#	Line 817 | Line 691 | public class LinkedBlockingQueueTest ext
691		/**
692		* Modifications do not cause iterators to fail
693		*/
694	<	public void testWeaklyConsistentIteration () {
694	>	public void testWeaklyConsistentIteration() {
695		final LinkedBlockingQueue q = new LinkedBlockingQueue(3);
696		q.add(one);
697		q.add(two);
698		q.add(three);
699	<	try {
700	<	for (Iterator it = q.iterator(); it.hasNext();) {
701	<	q.remove();
828	<	it.next();
829	<	}
830	<	}
831	<	catch (ConcurrentModificationException e) {
832	<	unexpectedException();
699	>	for (Iterator it = q.iterator(); it.hasNext();) {
700	>	q.remove();
701	>	it.next();
702		}
703		assertEquals(0, q.size());
704		}
705
837	–
706		/**
707		* toString contains toStrings of elements
708		*/
#	Line 842 | Line 710 | public class LinkedBlockingQueueTest ext
710		LinkedBlockingQueue q = populatedQueue(SIZE);
711		String s = q.toString();
712		for (int i = 0; i < SIZE; ++i) {
713	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
713	>	assertTrue(s.contains(String.valueOf(i)));
714		}
715		}
716
849	–
717		/**
718		* offer transfers elements across Executor tasks
719		*/
#	Line 854 | Line 721 | public class LinkedBlockingQueueTest ext
721		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
722		q.add(one);
723		q.add(two);
724	<	ExecutorService executor = Executors.newFixedThreadPool(2);
725	<	executor.execute(new Runnable() {
726	<	public void run() {
727	<	threadAssertFalse(q.offer(three));
728	<	try {
729	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS));
730	<	threadAssertEquals(0, q.remainingCapacity());
731	<	}
732	<	catch (InterruptedException e) {
733	<	threadUnexpectedException();
867	<	}
868	<	}
869	<	});
870	<
871	<	executor.execute(new Runnable() {
872	<	public void run() {
873	<	try {
874	<	Thread.sleep(SMALL_DELAY_MS);
875	<	threadAssertEquals(one, q.take());
876	<	}
877	<	catch (InterruptedException e) {
878	<	threadUnexpectedException();
879	<	}
880	<	}
881	<	});
724	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
725	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
726	>	try (PoolCleaner cleaner = cleaner(executor)) {
727	>	executor.execute(new CheckedRunnable() {
728	>	public void realRun() throws InterruptedException {
729	>	assertFalse(q.offer(three));
730	>	threadsStarted.await();
731	>	assertTrue(q.offer(three, LONG_DELAY_MS, MILLISECONDS));
732	>	assertEquals(0, q.remainingCapacity());
733	>	}});
734
735	<	joinPool(executor);
735	>	executor.execute(new CheckedRunnable() {
736	>	public void realRun() throws InterruptedException {
737	>	threadsStarted.await();
738	>	assertSame(one, q.take());
739	>	}});
740	>	}
741		}
742
743		/**
744	<	* poll retrieves elements across Executor threads
744	>	* timed poll retrieves elements across Executor threads
745		*/
746		public void testPollInExecutor() {
747		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
748	<	ExecutorService executor = Executors.newFixedThreadPool(2);
749	<	executor.execute(new Runnable() {
750	<	public void run() {
751	<	threadAssertNull(q.poll());
752	<	try {
753	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
754	<	threadAssertTrue(q.isEmpty());
755	<	}
756	<	catch (InterruptedException e) {
757	<	threadUnexpectedException();
901	<	}
902	<	}
903	<	});
748	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
749	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
750	>	try (PoolCleaner cleaner = cleaner(executor)) {
751	>	executor.execute(new CheckedRunnable() {
752	>	public void realRun() throws InterruptedException {
753	>	assertNull(q.poll());
754	>	threadsStarted.await();
755	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
756	>	checkEmpty(q);
757	>	}});
758
759	<	executor.execute(new Runnable() {
760	<	public void run() {
761	<	try {
908	<	Thread.sleep(SMALL_DELAY_MS);
759	>	executor.execute(new CheckedRunnable() {
760	>	public void realRun() throws InterruptedException {
761	>	threadsStarted.await();
762		q.put(one);
763	<	}
911	<	catch (InterruptedException e) {
912	<	threadUnexpectedException();
913	<	}
914	<	}
915	<	});
916	<
917	<	joinPool(executor);
918	<	}
919	<
920	<	/**
921	<	* A deserialized serialized queue has same elements in same order
922	<	*/
923	<	public void testSerialization() {
924	<	LinkedBlockingQueue q = populatedQueue(SIZE);
925	<
926	<	try {
927	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
928	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
929	<	out.writeObject(q);
930	<	out.close();
931	<
932	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
933	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
934	<	LinkedBlockingQueue r = (LinkedBlockingQueue)in.readObject();
935	<	assertEquals(q.size(), r.size());
936	<	while (!q.isEmpty())
937	<	assertEquals(q.remove(), r.remove());
938	<	} catch (Exception e) {
939	<	unexpectedException();
763	>	}});
764		}
765		}
766
767		/**
768	<	* drainTo(null) throws NPE
768	>	* A deserialized serialized queue has same elements in same order
769		*/
770	<	public void testDrainToNull() {
771	<	LinkedBlockingQueue q = populatedQueue(SIZE);
772	<	try {
773	<	q.drainTo(null);
774	<	shouldThrow();
775	<	} catch (NullPointerException success) {
776	<	}
777	<	}
778	<
779	<	/**
780	<	* drainTo(this) throws IAE
957	<	*/
958	<	public void testDrainToSelf() {
959	<	LinkedBlockingQueue q = populatedQueue(SIZE);
960	<	try {
961	<	q.drainTo(q);
962	<	shouldThrow();
963	<	} catch (IllegalArgumentException success) {
770	>	public void testSerialization() throws Exception {
771	>	Queue x = populatedQueue(SIZE);
772	>	Queue y = serialClone(x);
773	>
774	>	assertNotSame(x, y);
775	>	assertEquals(x.size(), y.size());
776	>	assertEquals(x.toString(), y.toString());
777	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
778	>	while (!x.isEmpty()) {
779	>	assertFalse(y.isEmpty());
780	>	assertEquals(x.remove(), y.remove());
781		}
782	+	assertTrue(y.isEmpty());
783		}
784
785		/**
#	Line 971 | Line 789 | public class LinkedBlockingQueueTest ext
789		LinkedBlockingQueue q = populatedQueue(SIZE);
790		ArrayList l = new ArrayList();
791		q.drainTo(l);
792	<	assertEquals(q.size(), 0);
793	<	assertEquals(l.size(), SIZE);
792	>	assertEquals(0, q.size());
793	>	assertEquals(SIZE, l.size());
794		for (int i = 0; i < SIZE; ++i)
795		assertEquals(l.get(i), new Integer(i));
796		q.add(zero);
#	Line 982 | Line 800 | public class LinkedBlockingQueueTest ext
800		assertTrue(q.contains(one));
801		l.clear();
802		q.drainTo(l);
803	<	assertEquals(q.size(), 0);
804	<	assertEquals(l.size(), 2);
803	>	assertEquals(0, q.size());
804	>	assertEquals(2, l.size());
805		for (int i = 0; i < 2; ++i)
806		assertEquals(l.get(i), new Integer(i));
807		}
#	Line 991 | Line 809 | public class LinkedBlockingQueueTest ext
809		/**
810		* drainTo empties full queue, unblocking a waiting put.
811		*/
812	<	public void testDrainToWithActivePut() {
812	>	public void testDrainToWithActivePut() throws InterruptedException {
813		final LinkedBlockingQueue q = populatedQueue(SIZE);
814	<	Thread t = new Thread(new Runnable() {
815	<	public void run() {
816	<	try {
817	<	q.put(new Integer(SIZE+1));
1000	<	} catch (InterruptedException ie) {
1001	<	threadUnexpectedException();
1002	<	}
1003	<	}
1004	<	});
1005	<	try {
1006	<	t.start();
1007	<	ArrayList l = new ArrayList();
1008	<	q.drainTo(l);
1009	<	assertTrue(l.size() >= SIZE);
1010	<	for (int i = 0; i < SIZE; ++i)
1011	<	assertEquals(l.get(i), new Integer(i));
1012	<	t.join();
1013	<	assertTrue(q.size() + l.size() >= SIZE);
1014	<	} catch (Exception e) {
1015	<	unexpectedException();
1016	<	}
1017	<	}
814	>	Thread t = new Thread(new CheckedRunnable() {
815	>	public void realRun() throws InterruptedException {
816	>	q.put(new Integer(SIZE + 1));
817	>	}});
818
819	<	/**
820	<	* drainTo(null, n) throws NPE
821	<	*/
822	<	public void testDrainToNullN() {
823	<	LinkedBlockingQueue q = populatedQueue(SIZE);
824	<	try {
825	<	q.drainTo(null, 0);
826	<	shouldThrow();
1027	<	} catch (NullPointerException success) {
1028	<	}
1029	<	}
1030	<
1031	<	/**
1032	<	* drainTo(this, n) throws IAE
1033	<	*/
1034	<	public void testDrainToSelfN() {
1035	<	LinkedBlockingQueue q = populatedQueue(SIZE);
1036	<	try {
1037	<	q.drainTo(q, 0);
1038	<	shouldThrow();
1039	<	} catch (IllegalArgumentException success) {
1040	<	}
819	>	t.start();
820	>	ArrayList l = new ArrayList();
821	>	q.drainTo(l);
822	>	assertTrue(l.size() >= SIZE);
823	>	for (int i = 0; i < SIZE; ++i)
824	>	assertEquals(l.get(i), new Integer(i));
825	>	t.join();
826	>	assertTrue(q.size() + l.size() >= SIZE);
827		}
828
829		/**
830	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
830	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
831		*/
832		public void testDrainToN() {
833		LinkedBlockingQueue q = new LinkedBlockingQueue();
#	Line 1050 | Line 836 | public class LinkedBlockingQueueTest ext
836		assertTrue(q.offer(new Integer(j)));
837		ArrayList l = new ArrayList();
838		q.drainTo(l, i);
839	<	int k = (i < SIZE)? i : SIZE;
840	<	assertEquals(l.size(), k);
841	<	assertEquals(q.size(), SIZE-k);
839	>	int k = (i < SIZE) ? i : SIZE;
840	>	assertEquals(k, l.size());
841	>	assertEquals(SIZE - k, q.size());
842		for (int j = 0; j < k; ++j)
843		assertEquals(l.get(j), new Integer(j));
844	<	while (q.poll() != null) ;
844	>	do {} while (q.poll() != null);
845	>	}
846	>	}
847	>
848	>	/**
849	>	* remove(null), contains(null) always return false
850	>	*/
851	>	public void testNeverContainsNull() {
852	>	Collection<?>[] qs = {
853	>	new LinkedBlockingQueue<Object>(),
854	>	populatedQueue(2),
855	>	};
856	>
857	>	for (Collection<?> q : qs) {
858	>	assertFalse(q.contains(null));
859	>	assertFalse(q.remove(null));
860		}
861		}
862

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