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

Comparing jsr166/src/test/tck/ArrayBlockingQueueTest.java (file contents):
Revision 1.11 by dl, Sun Oct 31 14:55:14 2004 UTC vs.
Revision 1.54 by jsr166, Tue Feb 21 02:04:17 2012 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
5	<	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	<	* Pat Fisher, Mike Judd.
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9	–
9		import junit.framework.*;
10	<	import java.util.*;
11	<	import java.util.concurrent.*;
12	<	import java.io.*;
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.Queue;
16	>	import java.util.concurrent.ArrayBlockingQueue;
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 static java.util.concurrent.TimeUnit.MILLISECONDS;
22
23		public class ArrayBlockingQueueTest extends JSR166TestCase {
24	+
25	+	public static class Fair extends BlockingQueueTest {
26	+	protected BlockingQueue emptyCollection() {
27	+	return new ArrayBlockingQueue(SIZE, true);
28	+	}
29	+	}
30	+
31	+	public static class NonFair extends BlockingQueueTest {
32	+	protected BlockingQueue emptyCollection() {
33	+	return new ArrayBlockingQueue(SIZE, 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
48	>	* Returns a new 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		* A new queue has the indicated capacity
64		*/
#	Line 43 | Line 67 | public class ArrayBlockingQueueTest exte
67		}
68
69		/**
70	<	* Constructor throws IAE if  capacity argument nonpositive
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	<	}
53	<	catch (IllegalArgumentException success) {}
76	>	} catch (IllegalArgumentException success) {}
77		}
78
79		/**
#	Line 58 | Line 81 | public class ArrayBlockingQueueTest exte
81		*/
82		public void testConstructor3() {
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		* 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		* 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		* 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		* 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		/**
#	Line 152 | Line 171 | public class ArrayBlockingQueueTest exte
171		}
172
173		/**
155	–	*  offer(null) throws NPE
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	–	*  add(null) throws NPE
167	–	*/
168	–	public void testAddNull() {
169	–	try {
170	–	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
171	–	q.add(null);
172	–	shouldThrow();
173	–	} catch (NullPointerException success) { }
174	–	}
175	–
176	–	/**
174		* Offer succeeds if not full; fails if full
175		*/
176		public void testOffer() {
#	Line 186 | Line 183 | public class ArrayBlockingQueueTest exte
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));
196	–	} catch (IllegalStateException success){
197	–	}
198	–	}
199	–
200	–	/**
201	–	*  addAll(null) throws NPE
202	–	*/
203	–	public void testAddAll1() {
204	–	try {
205	–	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
206	–	q.addAll(null);
193		shouldThrow();
194	<	}
209	<	catch (NullPointerException success) {}
194	>	} catch (IllegalStateException success) {}
195		}
196
197		/**
#	Line 217 | Line 202 | public class ArrayBlockingQueueTest exte
202		ArrayBlockingQueue q = populatedQueue(SIZE);
203		q.addAll(q);
204		shouldThrow();
205	<	}
221	<	catch (IllegalArgumentException success) {}
205	>	} catch (IllegalArgumentException success) {}
206		}
207
224	–
225	–	/**
226	–	*  addAll of a collection with null elements throws NPE
227	–	*/
228	–	public void testAddAll2() {
229	–	try {
230	–	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
231	–	Integer[] ints = new Integer[SIZE];
232	–	q.addAll(Arrays.asList(ints));
233	–	shouldThrow();
234	–	}
235	–	catch (NullPointerException success) {}
236	–	}
208		/**
209		* addAll of a collection with any null elements throws NPE after
210		* possibly adding some elements
#	Line 246 | Line 217 | public class ArrayBlockingQueueTest exte
217		ints[i] = new Integer(i);
218		q.addAll(Arrays.asList(ints));
219		shouldThrow();
220	<	}
250	<	catch (NullPointerException success) {}
220	>	} catch (NullPointerException success) {}
221		}
222	+
223		/**
224		* addAll throws ISE if not enough room
225		*/
#	Line 260 | Line 231 | public class ArrayBlockingQueueTest exte
231		ints[i] = new Integer(i);
232		q.addAll(Arrays.asList(ints));
233		shouldThrow();
234	<	}
264	<	catch (IllegalStateException success) {}
234	>	} catch (IllegalStateException success) {}
235		}
236	+
237		/**
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)
279	<	assertEquals(ints[i], q.poll());
280	<	}
281	<	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		/**
285	–	*  put(null) throws NPE
286	–	*/
287	–	public void testPutNull() {
288	–	try {
289	–	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
290	–	q.put(null);
291	–	shouldThrow();
292	–	}
293	–	catch (NullPointerException success){
294	–	}
295	–	catch (InterruptedException ie) {
296	–	unexpectedException();
297	–	}
298	–	}
299	–
300	–	/**
253		* all elements successfully put are contained
254		*/
255	<	public void testPut() {
256	<	try {
257	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
258	<	for (int i = 0; i < SIZE; ++i) {
259	<	Integer I = new Integer(i);
260	<	q.put(I);
309	<	assertTrue(q.contains(I));
310	<	}
311	<	assertEquals(0, q.remainingCapacity());
312	<	}
313	<	catch (InterruptedException ie) {
314	<	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		* put blocks interruptibly if full
267		*/
268	<	public void testBlockingPut() {
268	>	public void testBlockingPut() throws InterruptedException {
269		final ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
270	<	Thread t = new Thread(new Runnable() {
271	<	public void run() {
272	<	int added = 0;
273	<	try {
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(MEDIUM_DELAY_MS);
287	<	t.interrupt();
288	<	t.join();
289	<	}
290	<	catch (InterruptedException ie) {
291	<	unexpectedException();
292	<	}
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	<	* put blocks waiting for take when full
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(0, q.remainingCapacity());
326	>	assertEquals(0, q.take());
327	>
328	>	await(pleaseInterrupt);
329	>	assertThreadStaysAlive(t);
330	>	t.interrupt();
331	>	awaitTermination(t);
332	>	assertEquals(0, q.remainingCapacity());
333		}
334
335		/**
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();
354	<	Thread.sleep(SHORT_DELAY_MS);
355	<	t.interrupt();
356	<	t.join();
357	<	} catch (Exception e){
358	<	unexpectedException();
406	<	}
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	>	await(pleaseInterrupt);
356	>	assertThreadStaysAlive(t);
357	>	t.interrupt();
358	>	awaitTermination(t);
359		}
360
361		/**
362		* take retrieves elements in FIFO order
363		*/
364	<	public void testTake() {
365	<	try {
366	<	ArrayBlockingQueue q = populatedQueue(SIZE);
367	<	for (int i = 0; i < SIZE; ++i) {
416	<	assertEquals(i, ((Integer)q.take()).intValue());
417	<	}
418	<	} catch (InterruptedException e){
419	<	unexpectedException();
420	<	}
421	<	}
422	<
423	<	/**
424	<	* take blocks interruptibly when empty
425	<	*/
426	<	public void testTakeFromEmpty() {
427	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
428	<	Thread t = new Thread(new Runnable() {
429	<	public void run() {
430	<	try {
431	<	q.take();
432	<	threadShouldThrow();
433	<	} catch (InterruptedException success){ }
434	<	}
435	<	});
436	<	try {
437	<	t.start();
438	<	Thread.sleep(SHORT_DELAY_MS);
439	<	t.interrupt();
440	<	t.join();
441	<	} catch (Exception e){
442	<	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		* 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();
464	<	Thread.sleep(SHORT_DELAY_MS);
465	<	t.interrupt();
466	<	t.join();
467	<	}
468	<	catch (InterruptedException ie) {
469	<	unexpectedException();
470	<	}
471	<	}
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		* poll succeeds unless empty
#	Line 477 | Line 407 | public class ArrayBlockingQueueTest exte
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());
412	>	assertNull(q.poll());
413		}
414
415		/**
416	<	* timed pool with zero timeout succeeds when non-empty, else times out
416	>	* timed poll with zero timeout succeeds when non-empty, else times out
417		*/
418	<	public void testTimedPoll0() {
419	<	try {
420	<	ArrayBlockingQueue q = populatedQueue(SIZE);
421	<	for (int i = 0; i < SIZE; ++i) {
422	<	assertEquals(i, ((Integer)q.poll(0, TimeUnit.MILLISECONDS)).intValue());
423	<	}
424	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
495	<	} catch (InterruptedException e){
496	<	unexpectedException();
497	<	}
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	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
428	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
429		*/
430	<	public void testTimedPoll() {
431	<	try {
432	<	ArrayBlockingQueue q = populatedQueue(SIZE);
433	<	for (int i = 0; i < SIZE; ++i) {
434	<	assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
435	<	}
436	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
437	<	} catch (InterruptedException e){
438	<	unexpectedException();
439	<	}
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		* Interrupted timed poll throws InterruptedException instead of
445		* returning timeout status
446		*/
447	<	public void testInterruptedTimedPoll() {
448	<	Thread t = new Thread(new Runnable() {
449	<	public void run() {
450	<	try {
451	<	ArrayBlockingQueue q = populatedQueue(SIZE);
452	<	for (int i = 0; i < SIZE; ++i) {
453	<	threadAssertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
454	<	}
455	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
528	<	} catch (InterruptedException success){
529	<	}
530	<	}});
531	<	try {
532	<	t.start();
533	<	Thread.sleep(SHORT_DELAY_MS);
534	<	t.interrupt();
535	<	t.join();
536	<	}
537	<	catch (InterruptedException ie) {
538	<	unexpectedException();
539	<	}
540	<	}
541	<
542	<	/**
543	<	*  timed poll before a delayed offer fails; after offer succeeds;
544	<	*  on interruption throws
545	<	*/
546	<	public void testTimedPollWithOffer() {
547	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
548	<	Thread t = new Thread(new Runnable() {
549	<	public void run() {
550	<	try {
551	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
552	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
553	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
554	<	threadShouldThrow();
555	<	} catch (InterruptedException success) { }
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();
466	<	}
467	<	}
468	<
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		* peek returns next element, or null if empty
#	Line 573 | Line 477 | public class ArrayBlockingQueueTest exte
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		/**
#	Line 587 | Line 491 | public class ArrayBlockingQueueTest exte
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	<	}
597	<	catch (NoSuchElementException success) {}
500	>	} catch (NoSuchElementException success) {}
501		}
502
503		/**
#	Line 603 | Line 506 | public class ArrayBlockingQueueTest exte
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){
612	<	}
514	>	} catch (NoSuchElementException success) {}
515		}
516
517		/**
616	–	* remove(x) removes x and returns true if present
617	–	*/
618	–	public void testRemoveElement() {
619	–	ArrayBlockingQueue q = populatedQueue(SIZE);
620	–	for (int i = 1; i < SIZE; i+=2) {
621	–	assertTrue(q.remove(new Integer(i)));
622	–	}
623	–	for (int i = 0; i < SIZE; i+=2) {
624	–	assertTrue(q.remove(new Integer(i)));
625	–	assertFalse(q.remove(new Integer(i+1)));
626	–	}
627	–	assertTrue(q.isEmpty());
628	–	}
629	–
630	–	/**
518		* contains(x) reports true when elements added but not yet removed
519		*/
520		public void testContains() {
521		ArrayBlockingQueue q = populatedQueue(SIZE);
522		for (int i = 0; i < SIZE; ++i) {
523		assertTrue(q.contains(new Integer(i)));
524	<	q.poll();
524	>	assertEquals(i, q.poll());
525		assertFalse(q.contains(new Integer(i)));
526		}
527		}
#	Line 705 | Line 592 | public class ArrayBlockingQueueTest exte
592		}
593
594		/**
595	<	*  toArray contains all elements
595	>	* toArray contains all elements in FIFO order
596		*/
597		public void testToArray() {
598		ArrayBlockingQueue q = populatedQueue(SIZE);
599	<	Object[] o = q.toArray();
600	<	try {
601	<	for(int i = 0; i < o.length; i++)
715	<	assertEquals(o[i], q.take());
716	<	} catch (InterruptedException e){
717	<	unexpectedException();
718	<	}
599	>	Object[] o = q.toArray();
600	>	for (int i = 0; i < o.length; i++)
601	>	assertSame(o[i], q.poll());
602		}
603
604		/**
605	<	* toArray(a) contains all elements
605	>	* toArray(a) contains all elements in FIFO order
606		*/
607		public void testToArray2() {
608	<	ArrayBlockingQueue q = populatedQueue(SIZE);
609	<	Integer[] ints = new Integer[SIZE];
610	<	ints = (Integer[])q.toArray(ints);
611	<	try {
612	<	for(int i = 0; i < ints.length; i++)
613	<	assertEquals(ints[i], q.take());
731	<	} catch (InterruptedException e){
732	<	unexpectedException();
733	<	}
608	>	ArrayBlockingQueue<Integer> q = populatedQueue(SIZE);
609	>	Integer[] ints = new Integer[SIZE];
610	>	Integer[] array = q.toArray(ints);
611	>	assertSame(ints, array);
612	>	for (int i = 0; i < ints.length; i++)
613	>	assertSame(ints[i], q.poll());
614		}
615
616		/**
617	<	* toArray(null) throws NPE
738	<	*/
739	<	public void testToArray_BadArg() {
740	<	try {
741	<	ArrayBlockingQueue q = populatedQueue(SIZE);
742	<	Object o[] = q.toArray(null);
743	<	shouldThrow();
744	<	} catch(NullPointerException success){}
745	<	}
746	<
747	<	/**
748	<	* toArray with incompatible array type throws CCE
617	>	* toArray(incompatible array type) throws ArrayStoreException
618		*/
619		public void testToArray1_BadArg() {
620	<	try {
621	<	ArrayBlockingQueue q = populatedQueue(SIZE);
622	<	Object o[] = q.toArray(new String[10] );
623	<	shouldThrow();
624	<	} catch(ArrayStoreException  success){}
620	>	ArrayBlockingQueue q = populatedQueue(SIZE);
621	>	try {
622	>	q.toArray(new String[10]);
623	>	shouldThrow();
624	>	} catch (ArrayStoreException success) {}
625		}
626
758	–
627		/**
628		* iterator iterates through all elements
629		*/
630	<	public void testIterator() {
630	>	public void testIterator() throws InterruptedException {
631		ArrayBlockingQueue q = populatedQueue(SIZE);
632	<	Iterator it = q.iterator();
633	<	try {
634	<	while(it.hasNext()){
635	<	assertEquals(it.next(), q.take());
768	<	}
769	<	} catch (InterruptedException e){
770	<	unexpectedException();
771	<	}
632	>	Iterator it = q.iterator();
633	>	while (it.hasNext()) {
634	>	assertEquals(it.next(), q.take());
635	>	}
636		}
637
638		/**
639		* iterator.remove removes current element
640		*/
641	<	public void testIteratorRemove () {
641	>	public void testIteratorRemove() {
642		final ArrayBlockingQueue q = new ArrayBlockingQueue(3);
643		q.add(two);
644		q.add(one);
#	Line 783 | Line 647 | public class ArrayBlockingQueueTest exte
647		Iterator it = q.iterator();
648		it.next();
649		it.remove();
650	<
650	>
651		it = q.iterator();
652	<	assertEquals(it.next(), one);
653	<	assertEquals(it.next(), three);
652	>	assertSame(it.next(), one);
653	>	assertSame(it.next(), three);
654		assertFalse(it.hasNext());
655		}
656
#	Line 803 | Line 667 | public class ArrayBlockingQueueTest exte
667
668		int k = 0;
669		for (Iterator it = q.iterator(); it.hasNext();) {
670	<	int i = ((Integer)(it.next())).intValue();
807	<	assertEquals(++k, i);
670	>	assertEquals(++k, it.next());
671		}
672		assertEquals(3, k);
673		}
#	Line 812 | Line 675 | public class ArrayBlockingQueueTest exte
675		/**
676		* Modifications do not cause iterators to fail
677		*/
678	<	public void testWeaklyConsistentIteration () {
678	>	public void testWeaklyConsistentIteration() {
679		final ArrayBlockingQueue q = new ArrayBlockingQueue(3);
680		q.add(one);
681		q.add(two);
682		q.add(three);
683	<	try {
684	<	for (Iterator it = q.iterator(); it.hasNext();) {
685	<	q.remove();
823	<	it.next();
824	<	}
825	<	}
826	<	catch (ConcurrentModificationException e) {
827	<	unexpectedException();
683	>	for (Iterator it = q.iterator(); it.hasNext();) {
684	>	q.remove();
685	>	it.next();
686		}
687		assertEquals(0, q.size());
688		}
689
832	–
690		/**
691		* toString contains toStrings of elements
692		*/
#	Line 837 | Line 694 | public class ArrayBlockingQueueTest exte
694		ArrayBlockingQueue q = populatedQueue(SIZE);
695		String s = q.toString();
696		for (int i = 0; i < SIZE; ++i) {
697	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
697	>	assertTrue(s.contains(String.valueOf(i)));
698		}
699	<	}
843	<
699	>	}
700
701		/**
702		* offer transfers elements across Executor tasks
#	Line 850 | Line 706 | public class ArrayBlockingQueueTest exte
706		q.add(one);
707		q.add(two);
708		ExecutorService executor = Executors.newFixedThreadPool(2);
709	<	executor.execute(new Runnable() {
710	<	public void run() {
711	<	threadAssertFalse(q.offer(three));
712	<	try {
713	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
714	<	threadAssertEquals(0, q.remainingCapacity());
715	<	}
716	<	catch (InterruptedException e) {
717	<	threadUnexpectedException();
718	<	}
719	<	}
720	<	});
709	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
710	>	executor.execute(new CheckedRunnable() {
711	>	public void realRun() throws InterruptedException {
712	>	assertFalse(q.offer(three));
713	>	threadsStarted.await();
714	>	assertTrue(q.offer(three, LONG_DELAY_MS, MILLISECONDS));
715	>	assertEquals(0, q.remainingCapacity());
716	>	}});
717	>
718	>	executor.execute(new CheckedRunnable() {
719	>	public void realRun() throws InterruptedException {
720	>	threadsStarted.await();
721	>	assertEquals(0, q.remainingCapacity());
722	>	assertSame(one, q.take());
723	>	}});
724
866	–	executor.execute(new Runnable() {
867	–	public void run() {
868	–	try {
869	–	Thread.sleep(SMALL_DELAY_MS);
870	–	threadAssertEquals(one, q.take());
871	–	}
872	–	catch (InterruptedException e) {
873	–	threadUnexpectedException();
874	–	}
875	–	}
876	–	});
877	–
725		joinPool(executor);
879	–
726		}
727
728		/**
729	<	* poll retrieves elements across Executor threads
729	>	* timed poll retrieves elements across Executor threads
730		*/
731		public void testPollInExecutor() {
732		final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
733	+	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
734		ExecutorService executor = Executors.newFixedThreadPool(2);
735	<	executor.execute(new Runnable() {
736	<	public void run() {
737	<	threadAssertNull(q.poll());
738	<	try {
739	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
740	<	threadAssertTrue(q.isEmpty());
741	<	}
742	<	catch (InterruptedException e) {
743	<	threadUnexpectedException();
744	<	}
745	<	}
746	<	});
735	>	executor.execute(new CheckedRunnable() {
736	>	public void realRun() throws InterruptedException {
737	>	assertNull(q.poll());
738	>	threadsStarted.await();
739	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
740	>	checkEmpty(q);
741	>	}});
742	>
743	>	executor.execute(new CheckedRunnable() {
744	>	public void realRun() throws InterruptedException {
745	>	threadsStarted.await();
746	>	q.put(one);
747	>	}});
748
901	–	executor.execute(new Runnable() {
902	–	public void run() {
903	–	try {
904	–	Thread.sleep(SMALL_DELAY_MS);
905	–	q.put(one);
906	–	}
907	–	catch (InterruptedException e) {
908	–	threadUnexpectedException();
909	–	}
910	–	}
911	–	});
912	–
749		joinPool(executor);
750		}
751
752		/**
753		* A deserialized serialized queue has same elements in same order
754		*/
755	<	public void testSerialization() {
756	<	ArrayBlockingQueue q = populatedQueue(SIZE);
757	<
758	<	try {
759	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
760	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
761	<	out.writeObject(q);
762	<	out.close();
763	<
764	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
765	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
930	<	ArrayBlockingQueue r = (ArrayBlockingQueue)in.readObject();
931	<	assertEquals(q.size(), r.size());
932	<	while (!q.isEmpty())
933	<	assertEquals(q.remove(), r.remove());
934	<	} catch(Exception e){
935	<	unexpectedException();
936	<	}
937	<	}
938	<
939	<	/**
940	<	* drainTo(null) throws NPE
941	<	*/
942	<	public void testDrainToNull() {
943	<	ArrayBlockingQueue q = populatedQueue(SIZE);
944	<	try {
945	<	q.drainTo(null);
946	<	shouldThrow();
947	<	} catch(NullPointerException success) {
948	<	}
949	<	}
950	<
951	<	/**
952	<	* drainTo(this) throws IAE
953	<	*/
954	<	public void testDrainToSelf() {
955	<	ArrayBlockingQueue q = populatedQueue(SIZE);
956	<	try {
957	<	q.drainTo(q);
958	<	shouldThrow();
959	<	} catch(IllegalArgumentException success) {
755	>	public void testSerialization() throws Exception {
756	>	Queue x = populatedQueue(SIZE);
757	>	Queue y = serialClone(x);
758	>
759	>	assertTrue(x != y);
760	>	assertEquals(x.size(), y.size());
761	>	assertEquals(x.toString(), y.toString());
762	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
763	>	while (!x.isEmpty()) {
764	>	assertFalse(y.isEmpty());
765	>	assertEquals(x.remove(), y.remove());
766		}
767	+	assertTrue(y.isEmpty());
768		}
769
770		/**
771		* drainTo(c) empties queue into another collection c
772	<	*/
772	>	*/
773		public void testDrainTo() {
774		ArrayBlockingQueue q = populatedQueue(SIZE);
775		ArrayList l = new ArrayList();
776		q.drainTo(l);
777	<	assertEquals(q.size(), 0);
778	<	assertEquals(l.size(), SIZE);
779	<	for (int i = 0; i < SIZE; ++i)
777	>	assertEquals(0, q.size());
778	>	assertEquals(SIZE, l.size());
779	>	for (int i = 0; i < SIZE; ++i)
780		assertEquals(l.get(i), new Integer(i));
781		q.add(zero);
782		q.add(one);
#	Line 978 | Line 785 | public class ArrayBlockingQueueTest exte
785		assertTrue(q.contains(one));
786		l.clear();
787		q.drainTo(l);
788	<	assertEquals(q.size(), 0);
789	<	assertEquals(l.size(), 2);
790	<	for (int i = 0; i < 2; ++i)
788	>	assertEquals(0, q.size());
789	>	assertEquals(2, l.size());
790	>	for (int i = 0; i < 2; ++i)
791		assertEquals(l.get(i), new Integer(i));
792		}
793
794		/**
795		* drainTo empties full queue, unblocking a waiting put.
796	<	*/
797	<	public void testDrainToWithActivePut() {
796	>	*/
797	>	public void testDrainToWithActivePut() throws InterruptedException {
798		final ArrayBlockingQueue q = populatedQueue(SIZE);
799	<	Thread t = new Thread(new Runnable() {
800	<	public void run() {
801	<	try {
802	<	q.put(new Integer(SIZE+1));
996	<	} catch (InterruptedException ie){
997	<	threadUnexpectedException();
998	<	}
999	<	}
1000	<	});
1001	<	try {
1002	<	t.start();
1003	<	ArrayList l = new ArrayList();
1004	<	q.drainTo(l);
1005	<	assertTrue(l.size() >= SIZE);
1006	<	for (int i = 0; i < SIZE; ++i)
1007	<	assertEquals(l.get(i), new Integer(i));
1008	<	t.join();
1009	<	assertTrue(q.size() + l.size() >= SIZE);
1010	<	} catch(Exception e){
1011	<	unexpectedException();
1012	<	}
1013	<	}
799	>	Thread t = new Thread(new CheckedRunnable() {
800	>	public void realRun() throws InterruptedException {
801	>	q.put(new Integer(SIZE+1));
802	>	}});
803
804	<	/**
805	<	* drainTo(null, n) throws NPE
806	<	*/
807	<	public void testDrainToNullN() {
808	<	ArrayBlockingQueue q = populatedQueue(SIZE);
809	<	try {
810	<	q.drainTo(null, 0);
811	<	shouldThrow();
1023	<	} catch(NullPointerException success) {
1024	<	}
1025	<	}
1026	<
1027	<	/**
1028	<	* drainTo(this, n) throws IAE
1029	<	*/
1030	<	public void testDrainToSelfN() {
1031	<	ArrayBlockingQueue q = populatedQueue(SIZE);
1032	<	try {
1033	<	q.drainTo(q, 0);
1034	<	shouldThrow();
1035	<	} catch(IllegalArgumentException success) {
1036	<	}
804	>	t.start();
805	>	ArrayList l = new ArrayList();
806	>	q.drainTo(l);
807	>	assertTrue(l.size() >= SIZE);
808	>	for (int i = 0; i < SIZE; ++i)
809	>	assertEquals(l.get(i), new Integer(i));
810	>	t.join();
811	>	assertTrue(q.size() + l.size() >= SIZE);
812		}
813
814		/**
815	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
816	<	*/
815	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
816	>	*/
817		public void testDrainToN() {
818		ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE*2);
819		for (int i = 0; i < SIZE + 2; ++i) {
820	<	for(int j = 0; j < SIZE; j++)
820	>	for (int j = 0; j < SIZE; j++)
821		assertTrue(q.offer(new Integer(j)));
822		ArrayList l = new ArrayList();
823		q.drainTo(l, i);
824	<	int k = (i < SIZE)? i : SIZE;
825	<	assertEquals(l.size(), k);
826	<	assertEquals(q.size(), SIZE-k);
827	<	for (int j = 0; j < k; ++j)
824	>	int k = (i < SIZE) ? i : SIZE;
825	>	assertEquals(k, l.size());
826	>	assertEquals(SIZE-k, q.size());
827	>	for (int j = 0; j < k; ++j)
828		assertEquals(l.get(j), new Integer(j));
829		while (q.poll() != null) ;
830		}
831		}
832
1058	–
833		}

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