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

Comparing jsr166/src/test/tck/LinkedBlockingQueueTest.java (file contents):
Revision 1.4 by dl, Sat Sep 20 18:20:08 2003 UTC vs.
Revision 1.20 by jsr166, Sat Nov 21 21:00:34 2009 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
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
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 static java.util.concurrent.TimeUnit.MILLISECONDS;
13		import java.io.*;
14
15		public class LinkedBlockingQueueTest extends JSR166TestCase {
16
17		public static void main(String[] args) {
18	<	junit.textui.TestRunner.run (suite());
18	>	junit.textui.TestRunner.run (suite());
19		}
20
21		public static Test suite() {
22	<	return new TestSuite(LinkedBlockingQueueTest.class);
22	>	return new TestSuite(LinkedBlockingQueueTest.class);
23		}
24
25
#	Line 28 | Line 30 | public class LinkedBlockingQueueTest ext
30		private LinkedBlockingQueue populatedQueue(int n) {
31		LinkedBlockingQueue q = new LinkedBlockingQueue(n);
32		assertTrue(q.isEmpty());
33	<	for(int i = 0; i < n; i++)
34	<	assertTrue(q.offer(new Integer(i)));
33	>	for (int i = 0; i < n; i++)
34	>	assertTrue(q.offer(new Integer(i)));
35		assertFalse(q.isEmpty());
36		assertEquals(0, q.remainingCapacity());
37	<	assertEquals(n, q.size());
37	>	assertEquals(n, q.size());
38		return q;
39		}
40	<
40	>
41		/**
42	<	*
42	>	* A new queue has the indicated capacity, or Integer.MAX_VALUE if
43	>	* none given
44		*/
45		public void testConstructor1() {
46		assertEquals(SIZE, new LinkedBlockingQueue(SIZE).remainingCapacity());
47	+	assertEquals(Integer.MAX_VALUE, new LinkedBlockingQueue().remainingCapacity());
48		}
49
50		/**
51	<	*
51	>	* Constructor throws IAE if capacity argument nonpositive
52		*/
53		public void testConstructor2() {
54		try {
55		LinkedBlockingQueue q = new LinkedBlockingQueue(0);
56		shouldThrow();
57	<	}
54	<	catch (IllegalArgumentException success) {}
57	>	} catch (IllegalArgumentException success) {}
58		}
59
60		/**
61	<	*
61	>	* Initializing from null Collection throws NPE
62		*/
63		public void testConstructor3() {
61	–
64		try {
65		LinkedBlockingQueue q = new LinkedBlockingQueue(null);
66		shouldThrow();
67	<	}
66	<	catch (NullPointerException success) {}
67	>	} catch (NullPointerException success) {}
68		}
69
70		/**
71	<	*
71	>	* Initializing from Collection of null elements throws NPE
72		*/
73		public void testConstructor4() {
74		try {
75		Integer[] ints = new Integer[SIZE];
76		LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints));
77		shouldThrow();
78	<	}
78	<	catch (NullPointerException success) {}
78	>	} catch (NullPointerException success) {}
79		}
80
81		/**
82	<	*
82	>	* Initializing from Collection with some null elements throws NPE
83		*/
84		public void testConstructor5() {
85		try {
#	Line 88 | Line 88 | public class LinkedBlockingQueueTest ext
88		ints[i] = new Integer(i);
89		LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints));
90		shouldThrow();
91	<	}
92	<	catch (NullPointerException success) {}
91	>	} catch (NullPointerException success) {}
92		}
93
94		/**
95	<	*
95	>	* Queue contains all elements of collection used to initialize
96		*/
97		public void testConstructor6() {
98	<	try {
99	<	Integer[] ints = new Integer[SIZE];
100	<	for (int i = 0; i < SIZE; ++i)
101	<	ints[i] = new Integer(i);
102	<	LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints));
103	<	for (int i = 0; i < SIZE; ++i)
105	<	assertEquals(ints[i], q.poll());
106	<	}
107	<	finally {}
98	>	Integer[] ints = new Integer[SIZE];
99	>	for (int i = 0; i < SIZE; ++i)
100	>	ints[i] = new Integer(i);
101	>	LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints));
102	>	for (int i = 0; i < SIZE; ++i)
103	>	assertEquals(ints[i], q.poll());
104		}
105
106		/**
107	<	*
107	>	* Queue transitions from empty to full when elements added
108		*/
109		public void testEmptyFull() {
110		LinkedBlockingQueue q = new LinkedBlockingQueue(2);
#	Line 123 | Line 119 | public class LinkedBlockingQueueTest ext
119		}
120
121		/**
122	<	*
122	>	* remainingCapacity decreases on add, increases on remove
123		*/
124		public void testRemainingCapacity() {
125		LinkedBlockingQueue q = populatedQueue(SIZE);
#	Line 140 | Line 136 | public class LinkedBlockingQueueTest ext
136		}
137
138		/**
139	<	*
139	>	* offer(null) throws NPE
140		*/
141		public void testOfferNull() {
142	<	try {
142	>	try {
143		LinkedBlockingQueue q = new LinkedBlockingQueue(1);
144		q.offer(null);
145		shouldThrow();
146	<	} catch (NullPointerException success) { }
146	>	} catch (NullPointerException success) {}
147		}
148
149		/**
150	<	*
150	>	* add(null) throws NPE
151	>	*/
152	>	public void testAddNull() {
153	>	try {
154	>	LinkedBlockingQueue q = new LinkedBlockingQueue(1);
155	>	q.add(null);
156	>	shouldThrow();
157	>	} catch (NullPointerException success) {}
158	>	}
159	>
160	>	/**
161	>	* Offer succeeds if not full; fails if full
162		*/
163		public void testOffer() {
164		LinkedBlockingQueue q = new LinkedBlockingQueue(1);
#	Line 160 | Line 167 | public class LinkedBlockingQueueTest ext
167		}
168
169		/**
170	<	*
170	>	* add succeeds if not full; throws ISE if full
171		*/
172		public void testAdd() {
173	<	try {
173	>	try {
174		LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
175		for (int i = 0; i < SIZE; ++i) {
176		assertTrue(q.add(new Integer(i)));
177		}
178		assertEquals(0, q.remainingCapacity());
179		q.add(new Integer(SIZE));
180	<	} catch (IllegalStateException success){
181	<	}
180	>	shouldThrow();
181	>	} catch (IllegalStateException success) {}
182		}
183
184		/**
185	<	*
185	>	* addAll(null) throws NPE
186		*/
187		public void testAddAll1() {
188		try {
189		LinkedBlockingQueue q = new LinkedBlockingQueue(1);
190		q.addAll(null);
191		shouldThrow();
192	<	}
186	<	catch (NullPointerException success) {}
192	>	} catch (NullPointerException success) {}
193		}
194	+
195		/**
196	<	*
196	>	* addAll(this) throws IAE
197	>	*/
198	>	public void testAddAllSelf() {
199	>	try {
200	>	LinkedBlockingQueue q = populatedQueue(SIZE);
201	>	q.addAll(q);
202	>	shouldThrow();
203	>	} catch (IllegalArgumentException success) {}
204	>	}
205	>
206	>	/**
207	>	* addAll of a collection with null elements throws NPE
208		*/
209		public void testAddAll2() {
210		try {
#	Line 194 | Line 212 | public class LinkedBlockingQueueTest ext
212		Integer[] ints = new Integer[SIZE];
213		q.addAll(Arrays.asList(ints));
214		shouldThrow();
215	<	}
198	<	catch (NullPointerException success) {}
215	>	} catch (NullPointerException success) {}
216		}
217		/**
218	<	*
218	>	* addAll of a collection with any null elements throws NPE after
219	>	* possibly adding some elements
220		*/
221		public void testAddAll3() {
222		try {
#	Line 208 | Line 226 | public class LinkedBlockingQueueTest ext
226		ints[i] = new Integer(i);
227		q.addAll(Arrays.asList(ints));
228		shouldThrow();
229	<	}
212	<	catch (NullPointerException success) {}
229	>	} catch (NullPointerException success) {}
230		}
231		/**
232	<	*
232	>	* addAll throws ISE if not enough room
233		*/
234		public void testAddAll4() {
235		try {
#	Line 222 | Line 239 | public class LinkedBlockingQueueTest ext
239		ints[i] = new Integer(i);
240		q.addAll(Arrays.asList(ints));
241		shouldThrow();
242	<	}
226	<	catch (IllegalStateException success) {}
242	>	} catch (IllegalStateException success) {}
243		}
244		/**
245	<	*
245	>	* Queue contains all elements, in traversal order, of successful addAll
246		*/
247		public void testAddAll5() {
248	<	try {
249	<	Integer[] empty = new Integer[0];
250	<	Integer[] ints = new Integer[SIZE];
251	<	for (int i = 0; i < SIZE; ++i)
252	<	ints[i] = new Integer(i);
253	<	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
254	<	assertFalse(q.addAll(Arrays.asList(empty)));
255	<	assertTrue(q.addAll(Arrays.asList(ints)));
256	<	for (int i = 0; i < SIZE; ++i)
241	<	assertEquals(ints[i], q.poll());
242	<	}
243	<	finally {}
248	>	Integer[] empty = new Integer[0];
249	>	Integer[] ints = new Integer[SIZE];
250	>	for (int i = 0; i < SIZE; ++i)
251	>	ints[i] = new Integer(i);
252	>	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
253	>	assertFalse(q.addAll(Arrays.asList(empty)));
254	>	assertTrue(q.addAll(Arrays.asList(ints)));
255	>	for (int i = 0; i < SIZE; ++i)
256	>	assertEquals(ints[i], q.poll());
257		}
258
259		/**
260	<	*
260	>	* put(null) throws NPE
261		*/
262	<	public void testPutNull() {
263	<	try {
262	>	public void testPutNull() throws InterruptedException {
263	>	try {
264		LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
265		q.put(null);
266		shouldThrow();
267	<	}
255	<	catch (NullPointerException success){
256	<	}
257	<	catch (InterruptedException ie) {
258	<	unexpectedException();
259	<	}
267	>	} catch (NullPointerException success) {}
268		}
269
270		/**
271	<	*
271	>	* all elements successfully put are contained
272		*/
273	<	public void testPut() {
274	<	try {
275	<	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
276	<	for (int i = 0; i < SIZE; ++i) {
277	<	Integer I = new Integer(i);
278	<	q.put(I);
271	<	assertTrue(q.contains(I));
272	<	}
273	<	assertEquals(0, q.remainingCapacity());
274	<	}
275	<	catch (InterruptedException ie) {
276	<	unexpectedException();
273	>	public void testPut() throws InterruptedException {
274	>	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
275	>	for (int i = 0; i < SIZE; ++i) {
276	>	Integer I = new Integer(i);
277	>	q.put(I);
278	>	assertTrue(q.contains(I));
279		}
280	+	assertEquals(0, q.remainingCapacity());
281		}
282
283		/**
284	<	*
285	<	*/
286	<	public void testBlockingPut() {
287	<	Thread t = new Thread(new Runnable() {
288	<	public void run() {
289	<	int added = 0;
290	<	try {
291	<	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
292	<	for (int i = 0; i < SIZE; ++i) {
293	<	q.put(new Integer(i));
294	<	++added;
295	<	}
296	<	q.put(new Integer(SIZE));
297	<	threadShouldThrow();
298	<	} catch (InterruptedException ie){
299	<	threadAssertEquals(added, SIZE);
300	<	}
301	<	}});
284	>	* put blocks interruptibly if full
285	>	*/
286	>	public void testBlockingPut() throws InterruptedException {
287	>	Thread t = new Thread(new CheckedRunnable() {
288	>	public void realRun() {
289	>	int added = 0;
290	>	try {
291	>	LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
292	>	for (int i = 0; i < SIZE; ++i) {
293	>	q.put(new Integer(i));
294	>	++added;
295	>	}
296	>	q.put(new Integer(SIZE));
297	>	threadShouldThrow();
298	>	} catch (InterruptedException success) {
299	>	threadAssertEquals(added, SIZE);
300	>	}
301	>	}});
302	>
303		t.start();
304	<	try {
305	<	Thread.sleep(SHORT_DELAY_MS);
306	<	t.interrupt();
303	<	t.join();
304	<	}
305	<	catch (InterruptedException ie) {
306	<	unexpectedException();
307	<	}
304	>	Thread.sleep(SHORT_DELAY_MS);
305	>	t.interrupt();
306	>	t.join();
307		}
308
309		/**
310	<	*
310	>	* put blocks waiting for take when full
311		*/
312	<	public void testPutWithTake() {
312	>	public void testPutWithTake() throws InterruptedException {
313		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
314	<	Thread t = new Thread(new Runnable() {
315	<	public void run() {
316	<	int added = 0;
317	<	try {
318	<	q.put(new Object());
319	<	++added;
320	<	q.put(new Object());
321	<	++added;
322	<	q.put(new Object());
323	<	++added;
324	<	q.put(new Object());
325	<	++added;
326	<	threadShouldThrow();
327	<	} catch (InterruptedException e){
328	<	threadAssertTrue(added >= 2);
330	<	}
314	>	Thread t = new Thread(new CheckedRunnable() {
315	>	public void realRun() {
316	>	int added = 0;
317	>	try {
318	>	q.put(new Object());
319	>	++added;
320	>	q.put(new Object());
321	>	++added;
322	>	q.put(new Object());
323	>	++added;
324	>	q.put(new Object());
325	>	++added;
326	>	threadShouldThrow();
327	>	} catch (InterruptedException success) {
328	>	threadAssertTrue(added >= 2);
329		}
330	<	});
331	<	try {
332	<	t.start();
333	<	Thread.sleep(SHORT_DELAY_MS);
334	<	q.take();
335	<	t.interrupt();
336	<	t.join();
339	<	} catch (Exception e){
340	<	unexpectedException();
341	<	}
330	>	}});
331	>
332	>	t.start();
333	>	Thread.sleep(SHORT_DELAY_MS);
334	>	q.take();
335	>	t.interrupt();
336	>	t.join();
337		}
338
339		/**
340	<	*
340	>	* timed offer times out if full and elements not taken
341		*/
342	<	public void testTimedOffer() {
342	>	public void testTimedOffer() throws InterruptedException {
343		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
344	<	Thread t = new Thread(new Runnable() {
345	<	public void run() {
346	<	try {
347	<	q.put(new Object());
348	<	q.put(new Object());
349	<	threadAssertFalse(q.offer(new Object(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
350	<	q.offer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS);
351	<	threadShouldThrow();
352	<	} catch (InterruptedException success){}
353	<	}
354	<	});
355	<
361	<	try {
362	<	t.start();
363	<	Thread.sleep(SMALL_DELAY_MS);
364	<	t.interrupt();
365	<	t.join();
366	<	} catch (Exception e){
367	<	unexpectedException();
368	<	}
344	>	Thread t = new ThreadShouldThrow(InterruptedException.class) {
345	>	public void realRun() throws InterruptedException {
346	>	q.put(new Object());
347	>	q.put(new Object());
348	>	threadAssertFalse(q.offer(new Object(), SHORT_DELAY_MS, MILLISECONDS));
349	>	q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS);
350	>	}};
351	>
352	>	t.start();
353	>	Thread.sleep(SMALL_DELAY_MS);
354	>	t.interrupt();
355	>	t.join();
356		}
357
358		/**
359	<	*
359	>	* take retrieves elements in FIFO order
360		*/
361	<	public void testTake() {
362	<	try {
363	<	LinkedBlockingQueue q = populatedQueue(SIZE);
364	<	for (int i = 0; i < SIZE; ++i) {
365	<	assertEquals(i, ((Integer)q.take()).intValue());
379	<	}
380	<	} catch (InterruptedException e){
381	<	unexpectedException();
382	<	}
361	>	public void testTake() throws InterruptedException {
362	>	LinkedBlockingQueue q = populatedQueue(SIZE);
363	>	for (int i = 0; i < SIZE; ++i) {
364	>	assertEquals(i, ((Integer)q.take()).intValue());
365	>	}
366		}
367
368		/**
369	<	*
369	>	* take blocks interruptibly when empty
370		*/
371	<	public void testTakeFromEmpty() {
371	>	public void testTakeFromEmpty() throws InterruptedException {
372		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
373	<	Thread t = new Thread(new Runnable() {
374	<	public void run() {
375	<	try {
376	<	q.take();
377	<	threadShouldThrow();
378	<	} catch (InterruptedException success){ }
379	<	}
380	<	});
381	<	try {
399	<	t.start();
400	<	Thread.sleep(SHORT_DELAY_MS);
401	<	t.interrupt();
402	<	t.join();
403	<	} catch (Exception e){
404	<	unexpectedException();
405	<	}
373	>	Thread t = new ThreadShouldThrow(InterruptedException.class) {
374	>	public void realRun() throws InterruptedException {
375	>	q.take();
376	>	}};
377	>
378	>	t.start();
379	>	Thread.sleep(SHORT_DELAY_MS);
380	>	t.interrupt();
381	>	t.join();
382		}
383
384		/**
385	<	*
386	<	*/
387	<	public void testBlockingTake() {
388	<	Thread t = new Thread(new Runnable() {
389	<	public void run() {
390	<	try {
391	<	LinkedBlockingQueue q = populatedQueue(SIZE);
392	<	for (int i = 0; i < SIZE; ++i) {
393	<	assertEquals(i, ((Integer)q.take()).intValue());
394	<	}
395	<	q.take();
396	<	threadShouldThrow();
421	<	} catch (InterruptedException success){
422	<	}
423	<	}});
385	>	* Take removes existing elements until empty, then blocks interruptibly
386	>	*/
387	>	public void testBlockingTake() throws InterruptedException {
388	>	Thread t = new ThreadShouldThrow(InterruptedException.class) {
389	>	public void realRun() throws InterruptedException {
390	>	LinkedBlockingQueue q = populatedQueue(SIZE);
391	>	for (int i = 0; i < SIZE; ++i) {
392	>	assertEquals(i, ((Integer)q.take()).intValue());
393	>	}
394	>	q.take();
395	>	}};
396	>
397		t.start();
398	<	try {
399	<	Thread.sleep(SHORT_DELAY_MS);
400	<	t.interrupt();
428	<	t.join();
429	<	}
430	<	catch (InterruptedException ie) {
431	<	unexpectedException();
432	<	}
398	>	Thread.sleep(SHORT_DELAY_MS);
399	>	t.interrupt();
400	>	t.join();
401		}
402
403
404		/**
405	<	*
405	>	* poll succeeds unless empty
406		*/
407		public void testPoll() {
408		LinkedBlockingQueue q = populatedQueue(SIZE);
409		for (int i = 0; i < SIZE; ++i) {
410		assertEquals(i, ((Integer)q.poll()).intValue());
411		}
412	<	assertNull(q.poll());
412	>	assertNull(q.poll());
413		}
414
415		/**
416	<	*
416	>	* timed pool with zero timeout succeeds when non-empty, else times out
417		*/
418	<	public void testTimedPoll0() {
419	<	try {
420	<	LinkedBlockingQueue q = populatedQueue(SIZE);
421	<	for (int i = 0; i < SIZE; ++i) {
422	<	assertEquals(i, ((Integer)q.poll(0, TimeUnit.MILLISECONDS)).intValue());
423	<	}
456	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
457	<	} catch (InterruptedException e){
458	<	unexpectedException();
459	<	}
418	>	public void testTimedPoll0() throws InterruptedException {
419	>	LinkedBlockingQueue q = populatedQueue(SIZE);
420	>	for (int i = 0; i < SIZE; ++i) {
421	>	assertEquals(i, ((Integer)q.poll(0, MILLISECONDS)).intValue());
422	>	}
423	>	assertNull(q.poll(0, MILLISECONDS));
424		}
425
426		/**
427	<	*
427	>	* timed pool with nonzero timeout succeeds when non-empty, else times out
428		*/
429	<	public void testTimedPoll() {
430	<	try {
431	<	LinkedBlockingQueue q = populatedQueue(SIZE);
432	<	for (int i = 0; i < SIZE; ++i) {
433	<	assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
434	<	}
471	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
472	<	} catch (InterruptedException e){
473	<	unexpectedException();
474	<	}
429	>	public void testTimedPoll() throws InterruptedException {
430	>	LinkedBlockingQueue q = populatedQueue(SIZE);
431	>	for (int i = 0; i < SIZE; ++i) {
432	>	assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, MILLISECONDS)).intValue());
433	>	}
434	>	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
435		}
436
437		/**
438	<	*
439	<	*/
440	<	public void testInterruptedTimedPoll() {
441	<	Thread t = new Thread(new Runnable() {
442	<	public void run() {
443	<	try {
444	<	LinkedBlockingQueue q = populatedQueue(SIZE);
445	<	for (int i = 0; i < SIZE; ++i) {
446	<	threadAssertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
447	<	}
448	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
449	<	} catch (InterruptedException success){
450	<	}
451	<	}});
438	>	* Interrupted timed poll throws InterruptedException instead of
439	>	* returning timeout status
440	>	*/
441	>	public void testInterruptedTimedPoll() throws InterruptedException {
442	>	Thread t = new Thread(new CheckedRunnable() {
443	>	public void realRun() throws InterruptedException {
444	>	LinkedBlockingQueue q = populatedQueue(SIZE);
445	>	for (int i = 0; i < SIZE; ++i) {
446	>	assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, MILLISECONDS)).intValue());
447	>	}
448	>	try {
449	>	q.poll(SMALL_DELAY_MS, MILLISECONDS);
450	>	shouldThrow();
451	>	} catch (InterruptedException success) {}
452	>	}});
453	>
454		t.start();
455	<	try {
456	<	Thread.sleep(SHORT_DELAY_MS);
457	<	t.interrupt();
496	<	t.join();
497	<	}
498	<	catch (InterruptedException ie) {
499	<	unexpectedException();
500	<	}
455	>	Thread.sleep(SHORT_DELAY_MS);
456	>	t.interrupt();
457	>	t.join();
458		}
459
460		/**
461	<	*
461	>	*  timed poll before a delayed offer fails; after offer succeeds;
462	>	*  on interruption throws
463		*/
464	<	public void testTimedPollWithOffer() {
464	>	public void testTimedPollWithOffer() throws InterruptedException {
465		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
466	<	Thread t = new Thread(new Runnable() {
467	<	public void run() {
468	<	try {
469	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
470	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
471	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
472	<	threadShouldThrow();
473	<	} catch (InterruptedException success) { }
474	<	}
517	<	});
518	<	try {
519	<	t.start();
520	<	Thread.sleep(SMALL_DELAY_MS);
521	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
522	<	t.interrupt();
523	<	t.join();
524	<	} catch (Exception e){
525	<	unexpectedException();
526	<	}
527	<	}
466	>	Thread t = new Thread(new CheckedRunnable() {
467	>	public void realRun() throws InterruptedException {
468	>	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
469	>	assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS));
470	>	try {
471	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
472	>	shouldThrow();
473	>	} catch (InterruptedException success) {}
474	>	}});
475
476	+	t.start();
477	+	Thread.sleep(SMALL_DELAY_MS);
478	+	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
479	+	t.interrupt();
480	+	t.join();
481	+	}
482
483		/**
484	<	*
484	>	* peek returns next element, or null if empty
485		*/
486		public void testPeek() {
487		LinkedBlockingQueue q = populatedQueue(SIZE);
#	Line 538 | Line 491 | public class LinkedBlockingQueueTest ext
491		assertTrue(q.peek() == null ||
492		i != ((Integer)q.peek()).intValue());
493		}
494	<	assertNull(q.peek());
494	>	assertNull(q.peek());
495		}
496
497		/**
498	<	*
498	>	* element returns next element, or throws NSEE if empty
499		*/
500		public void testElement() {
501		LinkedBlockingQueue q = populatedQueue(SIZE);
#	Line 553 | Line 506 | public class LinkedBlockingQueueTest ext
506		try {
507		q.element();
508		shouldThrow();
509	<	}
557	<	catch (NoSuchElementException success) {}
509	>	} catch (NoSuchElementException success) {}
510		}
511
512		/**
513	<	*
513	>	* remove removes next element, or throws NSEE if empty
514		*/
515		public void testRemove() {
516		LinkedBlockingQueue q = populatedQueue(SIZE);
#	Line 568 | Line 520 | public class LinkedBlockingQueueTest ext
520		try {
521		q.remove();
522		shouldThrow();
523	<	} catch (NoSuchElementException success){
572	<	}
523	>	} catch (NoSuchElementException success) {}
524		}
525
526		/**
527	<	*
527	>	* remove(x) removes x and returns true if present
528		*/
529		public void testRemoveElement() {
530		LinkedBlockingQueue q = populatedQueue(SIZE);
#	Line 586 | Line 537 | public class LinkedBlockingQueueTest ext
537		}
538		assertTrue(q.isEmpty());
539		}
540	<
540	>
541	>	/**
542	>	* An add following remove(x) succeeds
543	>	*/
544	>	public void testRemoveElementAndAdd() throws InterruptedException {
545	>	LinkedBlockingQueue q = new LinkedBlockingQueue();
546	>	assertTrue(q.add(new Integer(1)));
547	>	assertTrue(q.add(new Integer(2)));
548	>	assertTrue(q.remove(new Integer(1)));
549	>	assertTrue(q.remove(new Integer(2)));
550	>	assertTrue(q.add(new Integer(3)));
551	>	assertTrue(q.take() != null);
552	>	}
553	>
554		/**
555	<	*
555	>	* contains(x) reports true when elements added but not yet removed
556		*/
557		public void testContains() {
558		LinkedBlockingQueue q = populatedQueue(SIZE);
#	Line 600 | Line 564 | public class LinkedBlockingQueueTest ext
564		}
565
566		/**
567	<	*
567	>	* clear removes all elements
568		*/
569		public void testClear() {
570		LinkedBlockingQueue q = populatedQueue(SIZE);
#	Line 610 | Line 574 | public class LinkedBlockingQueueTest ext
574		assertEquals(SIZE, q.remainingCapacity());
575		q.add(one);
576		assertFalse(q.isEmpty());
577	+	assertTrue(q.contains(one));
578		q.clear();
579		assertTrue(q.isEmpty());
580		}
581
582		/**
583	<	*
583	>	* containsAll(c) is true when c contains a subset of elements
584		*/
585		public void testContainsAll() {
586		LinkedBlockingQueue q = populatedQueue(SIZE);
#	Line 629 | Line 594 | public class LinkedBlockingQueueTest ext
594		}
595
596		/**
597	<	*
597	>	* retainAll(c) retains only those elements of c and reports true if changed
598		*/
599		public void testRetainAll() {
600		LinkedBlockingQueue q = populatedQueue(SIZE);
#	Line 648 | Line 613 | public class LinkedBlockingQueueTest ext
613		}
614
615		/**
616	<	*
616	>	* removeAll(c) removes only those elements of c and reports true if changed
617		*/
618		public void testRemoveAll() {
619		for (int i = 1; i < SIZE; ++i) {
#	Line 663 | Line 628 | public class LinkedBlockingQueueTest ext
628		}
629		}
630
666	–
631		/**
632	<	*
632	>	* toArray contains all elements
633		*/
634	<	public void testToArray() {
634	>	public void testToArray() throws InterruptedException {
635		LinkedBlockingQueue q = populatedQueue(SIZE);
636	<	Object[] o = q.toArray();
637	<	try {
638	<	for(int i = 0; i < o.length; i++)
675	<	assertEquals(o[i], q.take());
676	<	} catch (InterruptedException e){
677	<	unexpectedException();
678	<	}
636	>	Object[] o = q.toArray();
637	>	for (int i = 0; i < o.length; i++)
638	>	assertEquals(o[i], q.take());
639		}
640
641		/**
642	<	*
642	>	* toArray(a) contains all elements
643		*/
644	<	public void testToArray2() {
644	>	public void testToArray2() throws InterruptedException {
645		LinkedBlockingQueue q = populatedQueue(SIZE);
646	<	Integer[] ints = new Integer[SIZE];
647	<	ints = (Integer[])q.toArray(ints);
648	<	try {
649	<	for(int i = 0; i < ints.length; i++)
690	<	assertEquals(ints[i], q.take());
691	<	} catch (InterruptedException e){
692	<	unexpectedException();
693	<	}
646	>	Integer[] ints = new Integer[SIZE];
647	>	ints = (Integer[])q.toArray(ints);
648	>	for (int i = 0; i < ints.length; i++)
649	>	assertEquals(ints[i], q.take());
650		}
651	<
651	>
652		/**
653	<	*
653	>	* toArray(null) throws NPE
654		*/
655	<	public void testIterator() {
656	<	LinkedBlockingQueue q = populatedQueue(SIZE);
657	<	Iterator it = q.iterator();
658	<	try {
659	<	while(it.hasNext()){
660	<	assertEquals(it.next(), q.take());
705	<	}
706	<	} catch (InterruptedException e){
707	<	unexpectedException();
708	<	}
655	>	public void testToArray_BadArg() {
656	>	try {
657	>	LinkedBlockingQueue q = populatedQueue(SIZE);
658	>	Object o[] = q.toArray(null);
659	>	shouldThrow();
660	>	} catch (NullPointerException success) {}
661		}
662
663		/**
664	<	*
664	>	* toArray with incompatible array type throws CCE
665		*/
666	<	public void testIteratorOrdering() {
666	>	public void testToArray1_BadArg() {
667	>	try {
668	>	LinkedBlockingQueue q = populatedQueue(SIZE);
669	>	Object o[] = q.toArray(new String[10] );
670	>	shouldThrow();
671	>	} catch (ArrayStoreException success) {}
672	>	}
673	>
674
675	+	/**
676	+	* iterator iterates through all elements
677	+	*/
678	+	public void testIterator() throws InterruptedException {
679	+	LinkedBlockingQueue q = populatedQueue(SIZE);
680	+	Iterator it = q.iterator();
681	+	while (it.hasNext()) {
682	+	assertEquals(it.next(), q.take());
683	+	}
684	+	}
685	+
686	+	/**
687	+	* iterator.remove removes current element
688	+	*/
689	+	public void testIteratorRemove () {
690		final LinkedBlockingQueue q = new LinkedBlockingQueue(3);
691	+	q.add(two);
692	+	q.add(one);
693	+	q.add(three);
694	+
695	+	Iterator it = q.iterator();
696	+	it.next();
697	+	it.remove();
698	+
699	+	it = q.iterator();
700	+	assertEquals(it.next(), one);
701	+	assertEquals(it.next(), three);
702	+	assertFalse(it.hasNext());
703	+	}
704
705	+
706	+	/**
707	+	* iterator ordering is FIFO
708	+	*/
709	+	public void testIteratorOrdering() {
710	+	final LinkedBlockingQueue q = new LinkedBlockingQueue(3);
711		q.add(one);
712		q.add(two);
713		q.add(three);
721	–
714		assertEquals(0, q.remainingCapacity());
723	–
715		int k = 0;
716		for (Iterator it = q.iterator(); it.hasNext();) {
717		int i = ((Integer)(it.next())).intValue();
718		assertEquals(++k, i);
719		}
729	–
720		assertEquals(3, k);
721		}
722
723		/**
724	<	*
724	>	* Modifications do not cause iterators to fail
725		*/
726		public void testWeaklyConsistentIteration () {
737	–
727		final LinkedBlockingQueue q = new LinkedBlockingQueue(3);
739	–
728		q.add(one);
729		q.add(two);
730		q.add(three);
731	<
732	<	try {
733	<	for (Iterator it = q.iterator(); it.hasNext();) {
746	<	q.remove();
747	<	it.next();
748	<	}
749	<	}
750	<	catch (ConcurrentModificationException e) {
751	<	unexpectedException();
731	>	for (Iterator it = q.iterator(); it.hasNext();) {
732	>	q.remove();
733	>	it.next();
734		}
753	–
735		assertEquals(0, q.size());
736		}
737
738
739		/**
740	<	*
740	>	* toString contains toStrings of elements
741		*/
742		public void testToString() {
743		LinkedBlockingQueue q = populatedQueue(SIZE);
#	Line 764 | Line 745 | public class LinkedBlockingQueueTest ext
745		for (int i = 0; i < SIZE; ++i) {
746		assertTrue(s.indexOf(String.valueOf(i)) >= 0);
747		}
748	<	}
748	>	}
749
750
751		/**
752	<	*
752	>	* offer transfers elements across Executor tasks
753		*/
754		public void testOfferInExecutor() {
774	–
755		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
776	–
756		q.add(one);
757		q.add(two);
779	–
758		ExecutorService executor = Executors.newFixedThreadPool(2);
759	<
760	<	executor.execute(new Runnable() {
783	<	public void run() {
759	>	executor.execute(new CheckedRunnable() {
760	>	public void realRun() throws InterruptedException {
761		threadAssertFalse(q.offer(three));
762	<	try {
763	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
764	<	threadAssertEquals(0, q.remainingCapacity());
765	<	}
766	<	catch (InterruptedException e) {
767	<	threadUnexpectedException();
768	<	}
769	<	}
770	<	});
762	>	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS));
763	>	threadAssertEquals(0, q.remainingCapacity());
764	>	}});
765	>
766	>	executor.execute(new CheckedRunnable() {
767	>	public void realRun() throws InterruptedException {
768	>	Thread.sleep(SMALL_DELAY_MS);
769	>	threadAssertEquals(one, q.take());
770	>	}});
771
795	–	executor.execute(new Runnable() {
796	–	public void run() {
797	–	try {
798	–	Thread.sleep(SMALL_DELAY_MS);
799	–	threadAssertEquals(one, q.take());
800	–	}
801	–	catch (InterruptedException e) {
802	–	threadUnexpectedException();
803	–	}
804	–	}
805	–	});
806	–
772		joinPool(executor);
808	–
773		}
774
775		/**
776	<	*
776	>	* poll retrieves elements across Executor threads
777		*/
778		public void testPollInExecutor() {
815	–
779		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
817	–
780		ExecutorService executor = Executors.newFixedThreadPool(2);
781	<
782	<	executor.execute(new Runnable() {
821	<	public void run() {
781	>	executor.execute(new CheckedRunnable() {
782	>	public void realRun() throws InterruptedException {
783		threadAssertNull(q.poll());
784	<	try {
785	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
786	<	threadAssertTrue(q.isEmpty());
787	<	}
788	<	catch (InterruptedException e) {
789	<	threadUnexpectedException();
790	<	}
791	<	}
792	<	});
784	>	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
785	>	threadAssertTrue(q.isEmpty());
786	>	}});
787	>
788	>	executor.execute(new CheckedRunnable() {
789	>	public void realRun() throws InterruptedException {
790	>	Thread.sleep(SMALL_DELAY_MS);
791	>	q.put(one);
792	>	}});
793
833	–	executor.execute(new Runnable() {
834	–	public void run() {
835	–	try {
836	–	Thread.sleep(SMALL_DELAY_MS);
837	–	q.put(one);
838	–	}
839	–	catch (InterruptedException e) {
840	–	threadUnexpectedException();
841	–	}
842	–	}
843	–	});
844	–
794		joinPool(executor);
795		}
796
797		/**
798	<	*
798	>	* A deserialized serialized queue has same elements in same order
799		*/
800	<	public void testSerialization() {
800	>	public void testSerialization() throws Exception {
801		LinkedBlockingQueue q = populatedQueue(SIZE);
802
803	+	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
804	+	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
805	+	out.writeObject(q);
806	+	out.close();
807	+
808	+	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
809	+	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
810	+	LinkedBlockingQueue r = (LinkedBlockingQueue)in.readObject();
811	+	assertEquals(q.size(), r.size());
812	+	while (!q.isEmpty())
813	+	assertEquals(q.remove(), r.remove());
814	+	}
815	+
816	+	/**
817	+	* drainTo(null) throws NPE
818	+	*/
819	+	public void testDrainToNull() {
820	+	LinkedBlockingQueue q = populatedQueue(SIZE);
821	+	try {
822	+	q.drainTo(null);
823	+	shouldThrow();
824	+	} catch (NullPointerException success) {}
825	+	}
826	+
827	+	/**
828	+	* drainTo(this) throws IAE
829	+	*/
830	+	public void testDrainToSelf() {
831	+	LinkedBlockingQueue q = populatedQueue(SIZE);
832		try {
833	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
834	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
835	<	out.writeObject(q);
836	<	out.close();
833	>	q.drainTo(q);
834	>	shouldThrow();
835	>	} catch (IllegalArgumentException success) {}
836	>	}
837
838	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
839	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
840	<	LinkedBlockingQueue r = (LinkedBlockingQueue)in.readObject();
841	<	assertEquals(q.size(), r.size());
842	<	while (!q.isEmpty())
843	<	assertEquals(q.remove(), r.remove());
844	<	} catch(Exception e){
845	<	unexpectedException();
838	>	/**
839	>	* drainTo(c) empties queue into another collection c
840	>	*/
841	>	public void testDrainTo() {
842	>	LinkedBlockingQueue q = populatedQueue(SIZE);
843	>	ArrayList l = new ArrayList();
844	>	q.drainTo(l);
845	>	assertEquals(q.size(), 0);
846	>	assertEquals(l.size(), SIZE);
847	>	for (int i = 0; i < SIZE; ++i)
848	>	assertEquals(l.get(i), new Integer(i));
849	>	q.add(zero);
850	>	q.add(one);
851	>	assertFalse(q.isEmpty());
852	>	assertTrue(q.contains(zero));
853	>	assertTrue(q.contains(one));
854	>	l.clear();
855	>	q.drainTo(l);
856	>	assertEquals(q.size(), 0);
857	>	assertEquals(l.size(), 2);
858	>	for (int i = 0; i < 2; ++i)
859	>	assertEquals(l.get(i), new Integer(i));
860	>	}
861	>
862	>	/**
863	>	* drainTo empties full queue, unblocking a waiting put.
864	>	*/
865	>	public void testDrainToWithActivePut() throws InterruptedException {
866	>	final LinkedBlockingQueue q = populatedQueue(SIZE);
867	>	Thread t = new Thread(new CheckedRunnable() {
868	>	public void realRun() throws InterruptedException {
869	>	q.put(new Integer(SIZE+1));
870	>	}});
871	>
872	>	t.start();
873	>	ArrayList l = new ArrayList();
874	>	q.drainTo(l);
875	>	assertTrue(l.size() >= SIZE);
876	>	for (int i = 0; i < SIZE; ++i)
877	>	assertEquals(l.get(i), new Integer(i));
878	>	t.join();
879	>	assertTrue(q.size() + l.size() >= SIZE);
880	>	}
881	>
882	>	/**
883	>	* drainTo(null, n) throws NPE
884	>	*/
885	>	public void testDrainToNullN() {
886	>	LinkedBlockingQueue q = populatedQueue(SIZE);
887	>	try {
888	>	q.drainTo(null, 0);
889	>	shouldThrow();
890	>	} catch (NullPointerException success) {}
891	>	}
892	>
893	>	/**
894	>	* drainTo(this, n) throws IAE
895	>	*/
896	>	public void testDrainToSelfN() {
897	>	LinkedBlockingQueue q = populatedQueue(SIZE);
898	>	try {
899	>	q.drainTo(q, 0);
900	>	shouldThrow();
901	>	} catch (IllegalArgumentException success) {}
902	>	}
903	>
904	>	/**
905	>	* drainTo(c, n) empties first max {n, size} elements of queue into c
906	>	*/
907	>	public void testDrainToN() {
908	>	LinkedBlockingQueue q = new LinkedBlockingQueue();
909	>	for (int i = 0; i < SIZE + 2; ++i) {
910	>	for (int j = 0; j < SIZE; j++)
911	>	assertTrue(q.offer(new Integer(j)));
912	>	ArrayList l = new ArrayList();
913	>	q.drainTo(l, i);
914	>	int k = (i < SIZE)? i : SIZE;
915	>	assertEquals(l.size(), k);
916	>	assertEquals(q.size(), SIZE-k);
917	>	for (int j = 0; j < k; ++j)
918	>	assertEquals(l.get(j), new Integer(j));
919	>	while (q.poll() != null) ;
920		}
921		}
922

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