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

Comparing jsr166/src/test/tck/ArrayBlockingQueueTest.java (file contents):
Revision 1.4 by dl, Sat Sep 20 18:20:07 2003 UTC vs.
Revision 1.48 by jsr166, Mon May 30 22:43:20 2011 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/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
8	–
9		import junit.framework.*;
10	<	import java.util.*;
11	<	import java.util.concurrent.*;
10	>	import java.util.Arrays;
11	>	import java.util.ArrayList;
12	>	import java.util.Collection;
13	>	import java.util.Iterator;
14	>	import java.util.NoSuchElementException;
15	>	import java.util.concurrent.ArrayBlockingQueue;
16	>	import java.util.concurrent.BlockingQueue;
17	>	import java.util.concurrent.CountDownLatch;
18	>	import java.util.concurrent.Executors;
19	>	import java.util.concurrent.ExecutorService;
20	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
21		import java.io.*;
22
23		public class ArrayBlockingQueueTest extends JSR166TestCase {
24	+
25	+	public static class Fair extends BlockingQueueTest {
26	+	protected BlockingQueue emptyCollection() {
27	+	return new ArrayBlockingQueue(20, true);
28	+	}
29	+	}
30	+
31	+	public static class NonFair extends BlockingQueueTest {
32	+	protected BlockingQueue emptyCollection() {
33	+	return new ArrayBlockingQueue(20, false);
34	+	}
35	+	}
36	+
37		public static void main(String[] args) {
38	<	junit.textui.TestRunner.run (suite());
38	>	junit.textui.TestRunner.run(suite());
39		}
40	+
41		public static Test suite() {
42	<	return new TestSuite(ArrayBlockingQueueTest.class);
42	>	return newTestSuite(ArrayBlockingQueueTest.class,
43	>	new Fair().testSuite(),
44	>	new NonFair().testSuite());
45		}
46
47		/**
48		* Create a queue of given size containing consecutive
49		* Integers 0 ... n.
50		*/
51	<	private ArrayBlockingQueue populatedQueue(int n) {
52	<	ArrayBlockingQueue q = new ArrayBlockingQueue(n);
51	>	private ArrayBlockingQueue<Integer> populatedQueue(int n) {
52	>	ArrayBlockingQueue<Integer> q = new ArrayBlockingQueue<Integer>(n);
53		assertTrue(q.isEmpty());
54	<	for(int i = 0; i < n; i++)
55	<	assertTrue(q.offer(new Integer(i)));
54	>	for (int i = 0; i < n; i++)
55	>	assertTrue(q.offer(new Integer(i)));
56		assertFalse(q.isEmpty());
57		assertEquals(0, q.remainingCapacity());
58	<	assertEquals(n, q.size());
58	>	assertEquals(n, q.size());
59		return q;
60		}
61	<
61	>
62		/**
63	<	*
63	>	* A new queue has the indicated capacity
64		*/
65		public void testConstructor1() {
66		assertEquals(SIZE, new ArrayBlockingQueue(SIZE).remainingCapacity());
67		}
68
69		/**
70	<	*
70	>	* Constructor throws IAE if capacity argument nonpositive
71		*/
72		public void testConstructor2() {
73		try {
74	<	ArrayBlockingQueue q = new ArrayBlockingQueue(0);
74	>	new ArrayBlockingQueue(0);
75		shouldThrow();
76	<	}
52	<	catch (IllegalArgumentException success) {}
76	>	} catch (IllegalArgumentException success) {}
77		}
78
79		/**
80	<	*
80	>	* Initializing from null Collection throws NPE
81		*/
82		public void testConstructor3() {
59	–
83		try {
84	<	ArrayBlockingQueue q = new ArrayBlockingQueue(1, true, null);
84	>	new ArrayBlockingQueue(1, true, null);
85		shouldThrow();
86	<	}
64	<	catch (NullPointerException success) {}
86	>	} catch (NullPointerException success) {}
87		}
88
89		/**
90	<	*
90	>	* Initializing from Collection of null elements throws NPE
91		*/
92		public void testConstructor4() {
93	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
94		try {
95	<	Integer[] ints = new Integer[SIZE];
73	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, false, Arrays.asList(ints));
95	>	new ArrayBlockingQueue(SIZE, false, elements);
96		shouldThrow();
97	<	}
76	<	catch (NullPointerException success) {}
97	>	} catch (NullPointerException success) {}
98		}
99
100		/**
101	<	*
101	>	* Initializing from Collection with some null elements throws NPE
102		*/
103		public void testConstructor5() {
104	+	Integer[] ints = new Integer[SIZE];
105	+	for (int i = 0; i < SIZE-1; ++i)
106	+	ints[i] = i;
107	+	Collection<Integer> elements = Arrays.asList(ints);
108		try {
109	<	Integer[] ints = new Integer[SIZE];
85	<	for (int i = 0; i < SIZE-1; ++i)
86	<	ints[i] = new Integer(i);
87	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, false, Arrays.asList(ints));
109	>	new ArrayBlockingQueue(SIZE, false, Arrays.asList(ints));
110		shouldThrow();
111	<	}
90	<	catch (NullPointerException success) {}
111	>	} catch (NullPointerException success) {}
112		}
113
114		/**
115	<	*
115	>	* Initializing from too large collection throws IAE
116		*/
117		public void testConstructor6() {
118	+	Integer[] ints = new Integer[SIZE];
119	+	for (int i = 0; i < SIZE; ++i)
120	+	ints[i] = i;
121	+	Collection<Integer> elements = Arrays.asList(ints);
122		try {
123	<	Integer[] ints = new Integer[SIZE];
99	<	for (int i = 0; i < SIZE; ++i)
100	<	ints[i] = new Integer(i);
101	<	ArrayBlockingQueue q = new ArrayBlockingQueue(1, false, Arrays.asList(ints));
123	>	new ArrayBlockingQueue(SIZE - 1, false, elements);
124		shouldThrow();
125	<	}
104	<	catch (IllegalArgumentException success) {}
125	>	} catch (IllegalArgumentException success) {}
126		}
127
128		/**
129	<	*
129	>	* Queue contains all elements of collection used to initialize
130		*/
131		public void testConstructor7() {
132	<	try {
133	<	Integer[] ints = new Integer[SIZE];
134	<	for (int i = 0; i < SIZE; ++i)
135	<	ints[i] = new Integer(i);
136	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, true, Arrays.asList(ints));
137	<	for (int i = 0; i < SIZE; ++i)
138	<	assertEquals(ints[i], q.poll());
118	<	}
119	<	finally {}
132	>	Integer[] ints = new Integer[SIZE];
133	>	for (int i = 0; i < SIZE; ++i)
134	>	ints[i] = i;
135	>	Collection<Integer> elements = Arrays.asList(ints);
136	>	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, true, elements);
137	>	for (int i = 0; i < SIZE; ++i)
138	>	assertEquals(ints[i], q.poll());
139		}
140
141		/**
142	<	*
142	>	* Queue transitions from empty to full when elements added
143		*/
144		public void testEmptyFull() {
145		ArrayBlockingQueue q = new ArrayBlockingQueue(2);
#	Line 135 | Line 154 | public class ArrayBlockingQueueTest exte
154		}
155
156		/**
157	<	*
157	>	* remainingCapacity decreases on add, increases on remove
158		*/
159		public void testRemainingCapacity() {
160		ArrayBlockingQueue q = populatedQueue(SIZE);
#	Line 152 | Line 171 | public class ArrayBlockingQueueTest exte
171		}
172
173		/**
174	<	*
156	<	*/
157	<	public void testOfferNull() {
158	<	try {
159	<	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
160	<	q.offer(null);
161	<	shouldThrow();
162	<	} catch (NullPointerException success) { }
163	<	}
164	<
165	<	/**
166	<	*
174	>	* Offer succeeds if not full; fails if full
175		*/
176		public void testOffer() {
177		ArrayBlockingQueue q = new ArrayBlockingQueue(1);
#	Line 172 | Line 180 | public class ArrayBlockingQueueTest exte
180		}
181
182		/**
183	<	*
183	>	* add succeeds if not full; throws ISE if full
184		*/
185		public void testAdd() {
186	<	try {
186	>	try {
187		ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
188		for (int i = 0; i < SIZE; ++i) {
189		assertTrue(q.add(new Integer(i)));
190		}
191		assertEquals(0, q.remainingCapacity());
192		q.add(new Integer(SIZE));
185	–	} catch (IllegalStateException success){
186	–	}
187	–	}
188	–
189	–	/**
190	–	*
191	–	*/
192	–	public void testAddAll1() {
193	–	try {
194	–	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
195	–	q.addAll(null);
193		shouldThrow();
194	<	}
198	<	catch (NullPointerException success) {}
194	>	} catch (IllegalStateException success) {}
195		}
196	+
197		/**
198	<	*
198	>	* addAll(this) throws IAE
199		*/
200	<	public void testAddAll2() {
200	>	public void testAddAllSelf() {
201		try {
202	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
203	<	Integer[] ints = new Integer[SIZE];
207	<	q.addAll(Arrays.asList(ints));
202	>	ArrayBlockingQueue q = populatedQueue(SIZE);
203	>	q.addAll(q);
204		shouldThrow();
205	<	}
210	<	catch (NullPointerException success) {}
205	>	} catch (IllegalArgumentException success) {}
206		}
207	+
208		/**
209	<	*
209	>	* addAll of a collection with any null elements throws NPE after
210	>	* possibly adding some elements
211		*/
212		public void testAddAll3() {
213		try {
#	Line 220 | Line 217 | public class ArrayBlockingQueueTest exte
217		ints[i] = new Integer(i);
218		q.addAll(Arrays.asList(ints));
219		shouldThrow();
220	<	}
224	<	catch (NullPointerException success) {}
220	>	} catch (NullPointerException success) {}
221		}
222	+
223		/**
224	<	*
224	>	* addAll throws ISE if not enough room
225		*/
226		public void testAddAll4() {
227		try {
#	Line 234 | Line 231 | public class ArrayBlockingQueueTest exte
231		ints[i] = new Integer(i);
232		q.addAll(Arrays.asList(ints));
233		shouldThrow();
234	<	}
238	<	catch (IllegalStateException success) {}
234	>	} catch (IllegalStateException success) {}
235		}
236	+
237		/**
238	<	*
238	>	* Queue contains all elements, in traversal order, of successful addAll
239		*/
240		public void testAddAll5() {
241	<	try {
242	<	Integer[] empty = new Integer[0];
243	<	Integer[] ints = new Integer[SIZE];
244	<	for (int i = 0; i < SIZE; ++i)
245	<	ints[i] = new Integer(i);
246	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
247	<	assertFalse(q.addAll(Arrays.asList(empty)));
248	<	assertTrue(q.addAll(Arrays.asList(ints)));
249	<	for (int i = 0; i < SIZE; ++i)
253	<	assertEquals(ints[i], q.poll());
254	<	}
255	<	finally {}
241	>	Integer[] empty = new Integer[0];
242	>	Integer[] ints = new Integer[SIZE];
243	>	for (int i = 0; i < SIZE; ++i)
244	>	ints[i] = new Integer(i);
245	>	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
246	>	assertFalse(q.addAll(Arrays.asList(empty)));
247	>	assertTrue(q.addAll(Arrays.asList(ints)));
248	>	for (int i = 0; i < SIZE; ++i)
249	>	assertEquals(ints[i], q.poll());
250		}
251
252		/**
253	<	*
253	>	* all elements successfully put are contained
254		*/
255	<	public void testPutNull() {
256	<	try {
257	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
258	<	q.put(null);
259	<	shouldThrow();
260	<	}
267	<	catch (NullPointerException success){
268	<	}
269	<	catch (InterruptedException ie) {
270	<	unexpectedException();
271	<	}
272	<	}
273	<
274	<	/**
275	<	*
276	<	*/
277	<	public void testPut() {
278	<	try {
279	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
280	<	for (int i = 0; i < SIZE; ++i) {
281	<	Integer I = new Integer(i);
282	<	q.put(I);
283	<	assertTrue(q.contains(I));
284	<	}
285	<	assertEquals(0, q.remainingCapacity());
286	<	}
287	<	catch (InterruptedException ie) {
288	<	unexpectedException();
255	>	public void testPut() throws InterruptedException {
256	>	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
257	>	for (int i = 0; i < SIZE; ++i) {
258	>	Integer I = new Integer(i);
259	>	q.put(I);
260	>	assertTrue(q.contains(I));
261		}
262	+	assertEquals(0, q.remainingCapacity());
263		}
264
265		/**
266	<	*
266	>	* put blocks interruptibly if full
267		*/
268	<	public void testBlockingPut() {
269	<	Thread t = new Thread(new Runnable() {
270	<	public void run() {
271	<	int added = 0;
272	<	try {
273	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
274	<	for (int i = 0; i < SIZE; ++i) {
275	<	q.put(new Integer(i));
276	<	++added;
277	<	}
278	<	q.put(new Integer(SIZE));
279	<	threadShouldThrow();
280	<	} catch (InterruptedException ie){
281	<	threadAssertEquals(added, SIZE);
282	<	}
283	<	}});
284	<	try {
285	<	t.start();
286	<	Thread.sleep(SHORT_DELAY_MS);
287	<	t.interrupt();
288	<	t.join();
289	<	}
290	<	catch (InterruptedException ie) {
291	<	unexpectedException();
292	<	}
268	>	public void testBlockingPut() throws InterruptedException {
269	>	final ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
270	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
271	>	Thread t = newStartedThread(new CheckedRunnable() {
272	>	public void realRun() throws InterruptedException {
273	>	for (int i = 0; i < SIZE; ++i)
274	>	q.put(i);
275	>	assertEquals(SIZE, q.size());
276	>	assertEquals(0, q.remainingCapacity());
277	>
278	>	Thread.currentThread().interrupt();
279	>	try {
280	>	q.put(99);
281	>	shouldThrow();
282	>	} catch (InterruptedException success) {}
283	>	assertFalse(Thread.interrupted());
284	>
285	>	pleaseInterrupt.countDown();
286	>	try {
287	>	q.put(99);
288	>	shouldThrow();
289	>	} catch (InterruptedException success) {}
290	>	assertFalse(Thread.interrupted());
291	>	}});
292	>
293	>	await(pleaseInterrupt);
294	>	assertThreadStaysAlive(t);
295	>	t.interrupt();
296	>	awaitTermination(t);
297	>	assertEquals(SIZE, q.size());
298	>	assertEquals(0, q.remainingCapacity());
299		}
300
301		/**
302	<	*
302	>	* put blocks interruptibly waiting for take when full
303		*/
304	<	public void testPutWithTake() {
305	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
306	<	Thread t = new Thread(new Runnable() {
307	<	public void run() {
308	<	int added = 0;
309	<	try {
310	<	q.put(new Object());
311	<	++added;
312	<	q.put(new Object());
313	<	++added;
314	<	q.put(new Object());
315	<	++added;
316	<	q.put(new Object());
317	<	++added;
318	<	threadShouldThrow();
319	<	} catch (InterruptedException e){
320	<	threadAssertTrue(added >= 2);
321	<	}
322	<	}
323	<	});
324	<	try {
325	<	t.start();
326	<	Thread.sleep(SHORT_DELAY_MS);
327	<	q.take();
328	<	t.interrupt();
329	<	t.join();
330	<	} catch (Exception e){
331	<	unexpectedException();
332	<	}
304	>	public void testPutWithTake() throws InterruptedException {
305	>	final int capacity = 2;
306	>	final ArrayBlockingQueue q = new ArrayBlockingQueue(capacity);
307	>	final CountDownLatch pleaseTake = new CountDownLatch(1);
308	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
309	>	Thread t = newStartedThread(new CheckedRunnable() {
310	>	public void realRun() throws InterruptedException {
311	>	for (int i = 0; i < capacity; i++)
312	>	q.put(i);
313	>	pleaseTake.countDown();
314	>	q.put(86);
315	>
316	>	pleaseInterrupt.countDown();
317	>	try {
318	>	q.put(99);
319	>	shouldThrow();
320	>	} catch (InterruptedException success) {}
321	>	assertFalse(Thread.interrupted());
322	>	}});
323	>
324	>	await(pleaseTake);
325	>	assertEquals(q.remainingCapacity(), 0);
326	>	assertEquals(0, q.take());
327	>
328	>	await(pleaseInterrupt);
329	>	assertThreadStaysAlive(t);
330	>	t.interrupt();
331	>	awaitTermination(t);
332	>	assertEquals(q.remainingCapacity(), 0);
333		}
334
335		/**
336	<	*
336	>	* timed offer times out if full and elements not taken
337		*/
338	<	public void testTimedOffer() {
338	>	public void testTimedOffer() throws InterruptedException {
339		final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
340	<	Thread t = new Thread(new Runnable() {
341	<	public void run() {
342	<	try {
343	<	q.put(new Object());
344	<	q.put(new Object());
345	<	threadAssertFalse(q.offer(new Object(), SHORT_DELAY_MS/2, TimeUnit.MILLISECONDS));
346	<	q.offer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS);
347	<	threadShouldThrow();
348	<	} catch (InterruptedException success){}
349	<	}
350	<	});
351	<
352	<	try {
353	<	t.start();
375	<	Thread.sleep(SHORT_DELAY_MS);
376	<	t.interrupt();
377	<	t.join();
378	<	} catch (Exception e){
379	<	unexpectedException();
380	<	}
381	<	}
340	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
341	>	Thread t = newStartedThread(new CheckedRunnable() {
342	>	public void realRun() throws InterruptedException {
343	>	q.put(new Object());
344	>	q.put(new Object());
345	>	long startTime = System.nanoTime();
346	>	assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS));
347	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
348	>	pleaseInterrupt.countDown();
349	>	try {
350	>	q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS);
351	>	shouldThrow();
352	>	} catch (InterruptedException success) {}
353	>	}});
354
355	<	/**
356	<	*
357	<	*/
358	<	public void testTake() {
387	<	try {
388	<	ArrayBlockingQueue q = populatedQueue(SIZE);
389	<	for (int i = 0; i < SIZE; ++i) {
390	<	assertEquals(i, ((Integer)q.take()).intValue());
391	<	}
392	<	} catch (InterruptedException e){
393	<	unexpectedException();
394	<	}
355	>	await(pleaseInterrupt);
356	>	assertThreadStaysAlive(t);
357	>	t.interrupt();
358	>	awaitTermination(t);
359		}
360
361		/**
362	<	*
362	>	* take retrieves elements in FIFO order
363		*/
364	<	public void testTakeFromEmpty() {
365	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
366	<	Thread t = new Thread(new Runnable() {
367	<	public void run() {
404	<	try {
405	<	q.take();
406	<	threadShouldThrow();
407	<	} catch (InterruptedException success){ }
408	<	}
409	<	});
410	<	try {
411	<	t.start();
412	<	Thread.sleep(SHORT_DELAY_MS);
413	<	t.interrupt();
414	<	t.join();
415	<	} catch (Exception e){
416	<	unexpectedException();
364	>	public void testTake() throws InterruptedException {
365	>	ArrayBlockingQueue q = populatedQueue(SIZE);
366	>	for (int i = 0; i < SIZE; ++i) {
367	>	assertEquals(i, q.take());
368		}
369		}
370
371		/**
372	<	*
372	>	* Take removes existing elements until empty, then blocks interruptibly
373		*/
374	<	public void testBlockingTake() {
375	<	Thread t = new Thread(new Runnable() {
376	<	public void run() {
377	<	try {
378	<	ArrayBlockingQueue q = populatedQueue(SIZE);
379	<	for (int i = 0; i < SIZE; ++i) {
380	<	threadAssertEquals(i, ((Integer)q.take()).intValue());
381	<	}
382	<	q.take();
383	<	threadShouldThrow();
384	<	} catch (InterruptedException success){
385	<	}
386	<	}});
387	<	try {
388	<	t.start();
438	<	Thread.sleep(SHORT_DELAY_MS);
439	<	t.interrupt();
440	<	t.join();
441	<	}
442	<	catch (InterruptedException ie) {
443	<	unexpectedException();
444	<	}
445	<	}
374	>	public void testBlockingTake() throws InterruptedException {
375	>	final ArrayBlockingQueue q = populatedQueue(SIZE);
376	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
377	>	Thread t = newStartedThread(new CheckedRunnable() {
378	>	public void realRun() throws InterruptedException {
379	>	for (int i = 0; i < SIZE; ++i) {
380	>	assertEquals(i, q.take());
381	>	}
382	>
383	>	Thread.currentThread().interrupt();
384	>	try {
385	>	q.take();
386	>	shouldThrow();
387	>	} catch (InterruptedException success) {}
388	>	assertFalse(Thread.interrupted());
389
390	+	pleaseInterrupt.countDown();
391	+	try {
392	+	q.take();
393	+	shouldThrow();
394	+	} catch (InterruptedException success) {}
395	+	assertFalse(Thread.interrupted());
396	+	}});
397	+
398	+	await(pleaseInterrupt);
399	+	assertThreadStaysAlive(t);
400	+	t.interrupt();
401	+	awaitTermination(t);
402	+	}
403
404		/**
405	<	*
405	>	* poll succeeds unless empty
406		*/
407		public void testPoll() {
408		ArrayBlockingQueue q = populatedQueue(SIZE);
409		for (int i = 0; i < SIZE; ++i) {
410	<	assertEquals(i, ((Integer)q.poll()).intValue());
410	>	assertEquals(i, q.poll());
411		}
412	<	assertNull(q.poll());
457	<	}
458	<
459	<	/**
460	<	*
461	<	*/
462	<	public void testTimedPoll0() {
463	<	try {
464	<	ArrayBlockingQueue q = populatedQueue(SIZE);
465	<	for (int i = 0; i < SIZE; ++i) {
466	<	assertEquals(i, ((Integer)q.poll(0, TimeUnit.MILLISECONDS)).intValue());
467	<	}
468	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
469	<	} catch (InterruptedException e){
470	<	unexpectedException();
471	<	}
412	>	assertNull(q.poll());
413		}
414
415		/**
416	<	*
416	>	* timed poll with zero timeout succeeds when non-empty, else times out
417		*/
418	<	public void testTimedPoll() {
419	<	try {
420	<	ArrayBlockingQueue q = populatedQueue(SIZE);
421	<	for (int i = 0; i < SIZE; ++i) {
422	<	assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
423	<	}
424	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
484	<	} catch (InterruptedException e){
485	<	unexpectedException();
486	<	}
418	>	public void testTimedPoll0() throws InterruptedException {
419	>	ArrayBlockingQueue q = populatedQueue(SIZE);
420	>	for (int i = 0; i < SIZE; ++i) {
421	>	assertEquals(i, q.poll(0, MILLISECONDS));
422	>	}
423	>	assertNull(q.poll(0, MILLISECONDS));
424	>	checkEmpty(q);
425		}
426
427		/**
428	<	*
428	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
429		*/
430	<	public void testInterruptedTimedPoll() {
431	<	Thread t = new Thread(new Runnable() {
432	<	public void run() {
433	<	try {
434	<	ArrayBlockingQueue q = populatedQueue(SIZE);
435	<	for (int i = 0; i < SIZE; ++i) {
436	<	threadAssertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
437	<	}
438	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
439	<	} catch (InterruptedException success){
440	<	}
503	<	}});
504	<	try {
505	<	t.start();
506	<	Thread.sleep(SHORT_DELAY_MS);
507	<	t.interrupt();
508	<	t.join();
509	<	}
510	<	catch (InterruptedException ie) {
511	<	unexpectedException();
512	<	}
430	>	public void testTimedPoll() throws InterruptedException {
431	>	ArrayBlockingQueue q = populatedQueue(SIZE);
432	>	for (int i = 0; i < SIZE; ++i) {
433	>	long startTime = System.nanoTime();
434	>	assertEquals(i, q.poll(LONG_DELAY_MS, MILLISECONDS));
435	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
436	>	}
437	>	long startTime = System.nanoTime();
438	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
439	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
440	>	checkEmpty(q);
441		}
442
443		/**
444	<	*
445	<	*/
446	<	public void testTimedPollWithOffer() {
447	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
448	<	Thread t = new Thread(new Runnable() {
449	<	public void run() {
450	<	try {
451	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
452	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
453	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
454	<	threadShouldThrow();
455	<	} catch (InterruptedException success) { }
444	>	* Interrupted timed poll throws InterruptedException instead of
445	>	* returning timeout status
446	>	*/
447	>	public void testInterruptedTimedPoll() throws InterruptedException {
448	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
449	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
450	>	Thread t = newStartedThread(new CheckedRunnable() {
451	>	public void realRun() throws InterruptedException {
452	>	for (int i = 0; i < SIZE; ++i) {
453	>	long t0 = System.nanoTime();
454	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
455	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
456		}
457	<	});
458	<	try {
459	<	t.start();
460	<	Thread.sleep(SMALL_DELAY_MS);
461	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
462	<	t.interrupt();
463	<	t.join();
464	<	} catch (Exception e){
465	<	unexpectedException();
538	<	}
539	<	}
457	>	long t0 = System.nanoTime();
458	>	aboutToWait.countDown();
459	>	try {
460	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
461	>	shouldThrow();
462	>	} catch (InterruptedException success) {
463	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
464	>	}
465	>	}});
466
467	+	aboutToWait.await();
468	+	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
469	+	t.interrupt();
470	+	awaitTermination(t, MEDIUM_DELAY_MS);
471	+	checkEmpty(q);
472	+	}
473
474		/**
475	<	*
475	>	* peek returns next element, or null if empty
476		*/
477		public void testPeek() {
478		ArrayBlockingQueue q = populatedQueue(SIZE);
479		for (int i = 0; i < SIZE; ++i) {
480	<	assertEquals(i, ((Integer)q.peek()).intValue());
481	<	q.poll();
480	>	assertEquals(i, q.peek());
481	>	assertEquals(i, q.poll());
482		assertTrue(q.peek() == null ||
483	<	i != ((Integer)q.peek()).intValue());
483	>	!q.peek().equals(i));
484		}
485	<	assertNull(q.peek());
485	>	assertNull(q.peek());
486		}
487
488		/**
489	<	*
489	>	* element returns next element, or throws NSEE if empty
490		*/
491		public void testElement() {
492		ArrayBlockingQueue q = populatedQueue(SIZE);
493		for (int i = 0; i < SIZE; ++i) {
494	<	assertEquals(i, ((Integer)q.element()).intValue());
495	<	q.poll();
494	>	assertEquals(i, q.element());
495	>	assertEquals(i, q.poll());
496		}
497		try {
498		q.element();
499		shouldThrow();
500	<	}
569	<	catch (NoSuchElementException success) {}
500	>	} catch (NoSuchElementException success) {}
501		}
502
503		/**
504	<	*
504	>	* remove removes next element, or throws NSEE if empty
505		*/
506		public void testRemove() {
507		ArrayBlockingQueue q = populatedQueue(SIZE);
508		for (int i = 0; i < SIZE; ++i) {
509	<	assertEquals(i, ((Integer)q.remove()).intValue());
509	>	assertEquals(i, q.remove());
510		}
511		try {
512		q.remove();
513		shouldThrow();
514	<	} catch (NoSuchElementException success){
584	<	}
514	>	} catch (NoSuchElementException success) {}
515		}
516
517		/**
518	<	*
518	>	* remove(x) removes x and returns true if present
519		*/
520		public void testRemoveElement() {
521		ArrayBlockingQueue q = populatedQueue(SIZE);
#	Line 598 | Line 528 | public class ArrayBlockingQueueTest exte
528		}
529		assertTrue(q.isEmpty());
530		}
531	<
531	>
532		/**
533	<	*
533	>	* contains(x) reports true when elements added but not yet removed
534		*/
535		public void testContains() {
536		ArrayBlockingQueue q = populatedQueue(SIZE);
537		for (int i = 0; i < SIZE; ++i) {
538		assertTrue(q.contains(new Integer(i)));
539	<	q.poll();
539	>	assertEquals(i, q.poll());
540		assertFalse(q.contains(new Integer(i)));
541		}
542		}
543
544		/**
545	<	*
545	>	* clear removes all elements
546		*/
547		public void testClear() {
548		ArrayBlockingQueue q = populatedQueue(SIZE);
#	Line 622 | Line 552 | public class ArrayBlockingQueueTest exte
552		assertEquals(SIZE, q.remainingCapacity());
553		q.add(one);
554		assertFalse(q.isEmpty());
555	+	assertTrue(q.contains(one));
556		q.clear();
557		assertTrue(q.isEmpty());
558		}
559
560		/**
561	<	*
561	>	* containsAll(c) is true when c contains a subset of elements
562		*/
563		public void testContainsAll() {
564		ArrayBlockingQueue q = populatedQueue(SIZE);
#	Line 641 | Line 572 | public class ArrayBlockingQueueTest exte
572		}
573
574		/**
575	<	*
575	>	* retainAll(c) retains only those elements of c and reports true if changed
576		*/
577		public void testRetainAll() {
578		ArrayBlockingQueue q = populatedQueue(SIZE);
#	Line 660 | Line 591 | public class ArrayBlockingQueueTest exte
591		}
592
593		/**
594	<	*
594	>	* removeAll(c) removes only those elements of c and reports true if changed
595		*/
596		public void testRemoveAll() {
597		for (int i = 1; i < SIZE; ++i) {
#	Line 675 | Line 606 | public class ArrayBlockingQueueTest exte
606		}
607		}
608
678	–
609		/**
610	<	*
610	>	* toArray contains all elements in FIFO order
611		*/
612		public void testToArray() {
613		ArrayBlockingQueue q = populatedQueue(SIZE);
614	<	Object[] o = q.toArray();
615	<	try {
616	<	for(int i = 0; i < o.length; i++)
687	<	assertEquals(o[i], q.take());
688	<	} catch (InterruptedException e){
689	<	unexpectedException();
690	<	}
614	>	Object[] o = q.toArray();
615	>	for (int i = 0; i < o.length; i++)
616	>	assertSame(o[i], q.poll());
617		}
618
619		/**
620	<	*
620	>	* toArray(a) contains all elements in FIFO order
621		*/
622		public void testToArray2() {
623	+	ArrayBlockingQueue<Integer> q = populatedQueue(SIZE);
624	+	Integer[] ints = new Integer[SIZE];
625	+	Integer[] array = q.toArray(ints);
626	+	assertSame(ints, array);
627	+	for (int i = 0; i < ints.length; i++)
628	+	assertSame(ints[i], q.poll());
629	+	}
630	+
631	+	/**
632	+	* toArray(incompatible array type) throws ArrayStoreException
633	+	*/
634	+	public void testToArray1_BadArg() {
635		ArrayBlockingQueue q = populatedQueue(SIZE);
636	<	Integer[] ints = new Integer[SIZE];
637	<	ints = (Integer[])q.toArray(ints);
638	<	try {
639	<	for(int i = 0; i < ints.length; i++)
702	<	assertEquals(ints[i], q.take());
703	<	} catch (InterruptedException e){
704	<	unexpectedException();
705	<	}
636	>	try {
637	>	q.toArray(new String[10]);
638	>	shouldThrow();
639	>	} catch (ArrayStoreException success) {}
640		}
641	<
641	>
642		/**
643	<	*
643	>	* iterator iterates through all elements
644		*/
645	<	public void testIterator() {
645	>	public void testIterator() throws InterruptedException {
646		ArrayBlockingQueue q = populatedQueue(SIZE);
647	<	Iterator it = q.iterator();
648	<	try {
649	<	while(it.hasNext()){
650	<	assertEquals(it.next(), q.take());
717	<	}
718	<	} catch (InterruptedException e){
719	<	unexpectedException();
720	<	}
647	>	Iterator it = q.iterator();
648	>	while (it.hasNext()) {
649	>	assertEquals(it.next(), q.take());
650	>	}
651		}
652
653		/**
654	<	*
654	>	* iterator.remove removes current element
655	>	*/
656	>	public void testIteratorRemove() {
657	>	final ArrayBlockingQueue q = new ArrayBlockingQueue(3);
658	>	q.add(two);
659	>	q.add(one);
660	>	q.add(three);
661	>
662	>	Iterator it = q.iterator();
663	>	it.next();
664	>	it.remove();
665	>
666	>	it = q.iterator();
667	>	assertSame(it.next(), one);
668	>	assertSame(it.next(), three);
669	>	assertFalse(it.hasNext());
670	>	}
671	>
672	>	/**
673	>	* iterator ordering is FIFO
674		*/
675		public void testIteratorOrdering() {
676		final ArrayBlockingQueue q = new ArrayBlockingQueue(3);
#	Line 733 | Line 682 | public class ArrayBlockingQueueTest exte
682
683		int k = 0;
684		for (Iterator it = q.iterator(); it.hasNext();) {
685	<	int i = ((Integer)(it.next())).intValue();
737	<	assertEquals(++k, i);
685	>	assertEquals(++k, it.next());
686		}
687		assertEquals(3, k);
688		}
689
690		/**
691	<	*
691	>	* Modifications do not cause iterators to fail
692		*/
693	<	public void testWeaklyConsistentIteration () {
693	>	public void testWeaklyConsistentIteration() {
694		final ArrayBlockingQueue q = new ArrayBlockingQueue(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();
753	<	it.next();
754	<	}
755	<	}
756	<	catch (ConcurrentModificationException e) {
757	<	unexpectedException();
698	>	for (Iterator it = q.iterator(); it.hasNext();) {
699	>	q.remove();
700	>	it.next();
701		}
759	–
702		assertEquals(0, q.size());
703		}
704
763	–
705		/**
706	<	*
706	>	* toString contains toStrings of elements
707		*/
708		public void testToString() {
709		ArrayBlockingQueue 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	<	}
774	<
714	>	}
715
716		/**
717	<	*
717	>	* offer transfers elements across Executor tasks
718		*/
719		public void testOfferInExecutor() {
780	–
720		final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
782	–
721		q.add(one);
722		q.add(two);
785	–
723		ExecutorService executor = Executors.newFixedThreadPool(2);
724	+	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
725	+	executor.execute(new CheckedRunnable() {
726	+	public void realRun() throws InterruptedException {
727	+	assertFalse(q.offer(three));
728	+	threadsStarted.await();
729	+	assertTrue(q.offer(three, LONG_DELAY_MS, MILLISECONDS));
730	+	assertEquals(0, q.remainingCapacity());
731	+	}});
732	+
733	+	executor.execute(new CheckedRunnable() {
734	+	public void realRun() throws InterruptedException {
735	+	threadsStarted.await();
736	+	assertEquals(0, q.remainingCapacity());
737	+	assertSame(one, q.take());
738	+	}});
739
788	–	executor.execute(new Runnable() {
789	–	public void run() {
790	–	threadAssertFalse(q.offer(three));
791	–	try {
792	–	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
793	–	threadAssertEquals(0, q.remainingCapacity());
794	–	}
795	–	catch (InterruptedException e) {
796	–	threadUnexpectedException();
797	–	}
798	–	}
799	–	});
800	–
801	–	executor.execute(new Runnable() {
802	–	public void run() {
803	–	try {
804	–	Thread.sleep(SMALL_DELAY_MS);
805	–	threadAssertEquals(one, q.take());
806	–	}
807	–	catch (InterruptedException e) {
808	–	threadUnexpectedException();
809	–	}
810	–	}
811	–	});
812	–
740		joinPool(executor);
814	–
741		}
742
743		/**
744	<	*
744	>	* timed poll retrieves elements across Executor threads
745		*/
746		public void testPollInExecutor() {
821	–
747		final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
748	<
748	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
749		ExecutorService executor = Executors.newFixedThreadPool(2);
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 CheckedRunnable() {
759	+	public void realRun() throws InterruptedException {
760	+	threadsStarted.await();
761	+	q.put(one);
762	+	}});
763
826	–	executor.execute(new Runnable() {
827	–	public void run() {
828	–	threadAssertNull(q.poll());
829	–	try {
830	–	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
831	–	threadAssertTrue(q.isEmpty());
832	–	}
833	–	catch (InterruptedException e) {
834	–	threadUnexpectedException();
835	–	}
836	–	}
837	–	});
838	–
839	–	executor.execute(new Runnable() {
840	–	public void run() {
841	–	try {
842	–	Thread.sleep(SMALL_DELAY_MS);
843	–	q.put(one);
844	–	}
845	–	catch (InterruptedException e) {
846	–	threadUnexpectedException();
847	–	}
848	–	}
849	–	});
850	–
764		joinPool(executor);
765	+	}
766
767	+	/**
768	+	* A deserialized serialized queue has same elements in same order
769	+	*/
770	+	public void testSerialization() throws Exception {
771	+	ArrayBlockingQueue q = populatedQueue(SIZE);
772	+
773	+	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
774	+	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
775	+	out.writeObject(q);
776	+	out.close();
777	+
778	+	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
779	+	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
780	+	ArrayBlockingQueue r = (ArrayBlockingQueue)in.readObject();
781	+	assertEquals(q.size(), r.size());
782	+	while (!q.isEmpty())
783	+	assertEquals(q.remove(), r.remove());
784		}
785
786		/**
787	<	*
787	>	* drainTo(c) empties queue into another collection c
788		*/
789	<	public void testSerialization() {
789	>	public void testDrainTo() {
790		ArrayBlockingQueue q = populatedQueue(SIZE);
791	+	ArrayList l = new ArrayList();
792	+	q.drainTo(l);
793	+	assertEquals(q.size(), 0);
794	+	assertEquals(l.size(), SIZE);
795	+	for (int i = 0; i < SIZE; ++i)
796	+	assertEquals(l.get(i), new Integer(i));
797	+	q.add(zero);
798	+	q.add(one);
799	+	assertFalse(q.isEmpty());
800	+	assertTrue(q.contains(zero));
801	+	assertTrue(q.contains(one));
802	+	l.clear();
803	+	q.drainTo(l);
804	+	assertEquals(q.size(), 0);
805	+	assertEquals(l.size(), 2);
806	+	for (int i = 0; i < 2; ++i)
807	+	assertEquals(l.get(i), new Integer(i));
808	+	}
809
810	<	try {
811	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
812	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
813	<	out.writeObject(q);
814	<	out.close();
810	>	/**
811	>	* drainTo empties full queue, unblocking a waiting put.
812	>	*/
813	>	public void testDrainToWithActivePut() throws InterruptedException {
814	>	final ArrayBlockingQueue q = populatedQueue(SIZE);
815	>	Thread t = new Thread(new CheckedRunnable() {
816	>	public void realRun() throws InterruptedException {
817	>	q.put(new Integer(SIZE+1));
818	>	}});
819	>
820	>	t.start();
821	>	ArrayList l = new ArrayList();
822	>	q.drainTo(l);
823	>	assertTrue(l.size() >= SIZE);
824	>	for (int i = 0; i < SIZE; ++i)
825	>	assertEquals(l.get(i), new Integer(i));
826	>	t.join();
827	>	assertTrue(q.size() + l.size() >= SIZE);
828	>	}
829
830	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
831	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
832	<	ArrayBlockingQueue r = (ArrayBlockingQueue)in.readObject();
833	<	assertEquals(q.size(), r.size());
834	<	while (!q.isEmpty())
835	<	assertEquals(q.remove(), r.remove());
836	<	} catch(Exception e){
837	<	unexpectedException();
830	>	/**
831	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
832	>	*/
833	>	public void testDrainToN() {
834	>	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE*2);
835	>	for (int i = 0; i < SIZE + 2; ++i) {
836	>	for (int j = 0; j < SIZE; j++)
837	>	assertTrue(q.offer(new Integer(j)));
838	>	ArrayList l = new ArrayList();
839	>	q.drainTo(l, i);
840	>	int k = (i < SIZE) ? i : SIZE;
841	>	assertEquals(l.size(), k);
842	>	assertEquals(q.size(), SIZE-k);
843	>	for (int j = 0; j < k; ++j)
844	>	assertEquals(l.get(j), new Integer(j));
845	>	while (q.poll() != null) ;
846		}
847		}
848
878	–
849		}

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