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Comparing jsr166/src/test/tck/PriorityBlockingQueueTest.java (file contents):
Revision 1.6 by dl, Thu Sep 25 11:02:41 2003 UTC vs.
Revision 1.58 by jsr166, Sat Jan 17 22:55:06 2015 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
9	<	import junit.framework.*;
10	<	import java.util.*;
11	<	import java.util.concurrent.*;
12	<	import java.io.*;
9	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	>
11	>	import java.util.ArrayList;
12	>	import java.util.Arrays;
13	>	import java.util.Collection;
14	>	import java.util.Comparator;
15	>	import java.util.Iterator;
16	>	import java.util.NoSuchElementException;
17	>	import java.util.Queue;
18	>	import java.util.concurrent.BlockingQueue;
19	>	import java.util.concurrent.CountDownLatch;
20	>	import java.util.concurrent.Executors;
21	>	import java.util.concurrent.ExecutorService;
22	>	import java.util.concurrent.PriorityBlockingQueue;
23	>
24	>	import junit.framework.Test;
25
26		public class PriorityBlockingQueueTest extends JSR166TestCase {
27	+
28	+	public static class Generic extends BlockingQueueTest {
29	+	protected BlockingQueue emptyCollection() {
30	+	return new PriorityBlockingQueue();
31	+	}
32	+	}
33	+
34	+	public static class InitialCapacity extends BlockingQueueTest {
35	+	protected BlockingQueue emptyCollection() {
36	+	return new PriorityBlockingQueue(SIZE);
37	+	}
38	+	}
39	+
40		public static void main(String[] args) {
41	<	junit.textui.TestRunner.run (suite());
41	>	junit.textui.TestRunner.run(suite());
42		}
43	+
44		public static Test suite() {
45	<	return new TestSuite(PriorityBlockingQueueTest.class);
45	>	return newTestSuite(PriorityBlockingQueueTest.class,
46	>	new Generic().testSuite(),
47	>	new InitialCapacity().testSuite());
48		}
49
50		private static final int NOCAP = Integer.MAX_VALUE;
51
52		/** Sample Comparator */
53	<	static class MyReverseComparator implements Comparator {
53	>	static class MyReverseComparator implements Comparator {
54		public int compare(Object x, Object y) {
55	<	int i = ((Integer)x).intValue();
27	<	int j = ((Integer)y).intValue();
28	<	if (i < j) return 1;
29	<	if (i > j) return -1;
30	<	return 0;
55	>	return ((Comparable)y).compareTo(x);
56		}
57		}
58
59		/**
60	<	* Create a queue of given size containing consecutive
60	>	* Returns a new queue of given size containing consecutive
61		* Integers 0 ... n.
62		*/
63	<	private PriorityBlockingQueue populatedQueue(int n) {
64	<	PriorityBlockingQueue q = new PriorityBlockingQueue(n);
63	>	private PriorityBlockingQueue<Integer> populatedQueue(int n) {
64	>	PriorityBlockingQueue<Integer> q =
65	>	new PriorityBlockingQueue<Integer>(n);
66		assertTrue(q.isEmpty());
67	<	for(int i = n-1; i >= 0; i-=2)
68	<	assertTrue(q.offer(new Integer(i)));
69	<	for(int i = (n & 1); i < n; i+=2)
70	<	assertTrue(q.offer(new Integer(i)));
67	>	for (int i = n-1; i >= 0; i -= 2)
68	>	assertTrue(q.offer(new Integer(i)));
69	>	for (int i = (n & 1); i < n; i += 2)
70	>	assertTrue(q.offer(new Integer(i)));
71		assertFalse(q.isEmpty());
72		assertEquals(NOCAP, q.remainingCapacity());
73	<	assertEquals(n, q.size());
73	>	assertEquals(n, q.size());
74		return q;
75		}
76	<
76	>
77		/**
78		* A new queue has unbounded capacity
79		*/
#	Line 56 | Line 82 | public class PriorityBlockingQueueTest e
82		}
83
84		/**
85	<	* Constructor throws IAE if  capacity argument nonpositive
85	>	* Constructor throws IAE if capacity argument nonpositive
86		*/
87		public void testConstructor2() {
88		try {
89	<	PriorityBlockingQueue q = new PriorityBlockingQueue(0);
89	>	new PriorityBlockingQueue(0);
90		shouldThrow();
91	<	}
66	<	catch (IllegalArgumentException success) {}
91	>	} catch (IllegalArgumentException success) {}
92		}
93
94		/**
#	Line 71 | Line 96 | public class PriorityBlockingQueueTest e
96		*/
97		public void testConstructor3() {
98		try {
99	<	PriorityBlockingQueue q = new PriorityBlockingQueue(null);
99	>	new PriorityBlockingQueue(null);
100		shouldThrow();
101	<	}
77	<	catch (NullPointerException success) {}
101	>	} catch (NullPointerException success) {}
102		}
103
104		/**
105		* Initializing from Collection of null elements throws NPE
106		*/
107		public void testConstructor4() {
108	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
109		try {
110	<	Integer[] ints = new Integer[SIZE];
86	<	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
110	>	new PriorityBlockingQueue(elements);
111		shouldThrow();
112	<	}
89	<	catch (NullPointerException success) {}
112	>	} catch (NullPointerException success) {}
113		}
114
115		/**
116		* Initializing from Collection with some null elements throws NPE
117		*/
118		public void testConstructor5() {
119	+	Integer[] ints = new Integer[SIZE];
120	+	for (int i = 0; i < SIZE-1; ++i)
121	+	ints[i] = i;
122	+	Collection<Integer> elements = Arrays.asList(ints);
123		try {
124	<	Integer[] ints = new Integer[SIZE];
98	<	for (int i = 0; i < SIZE-1; ++i)
99	<	ints[i] = new Integer(i);
100	<	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
124	>	new PriorityBlockingQueue(elements);
125		shouldThrow();
126	<	}
103	<	catch (NullPointerException success) {}
126	>	} catch (NullPointerException success) {}
127		}
128
129		/**
130		* Queue contains all elements of collection used to initialize
131		*/
132		public void testConstructor6() {
133	<	try {
134	<	Integer[] ints = new Integer[SIZE];
135	<	for (int i = 0; i < SIZE; ++i)
136	<	ints[i] = new Integer(i);
137	<	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
138	<	for (int i = 0; i < SIZE; ++i)
116	<	assertEquals(ints[i], q.poll());
117	<	}
118	<	finally {}
133	>	Integer[] ints = new Integer[SIZE];
134	>	for (int i = 0; i < SIZE; ++i)
135	>	ints[i] = i;
136	>	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
137	>	for (int i = 0; i < SIZE; ++i)
138	>	assertEquals(ints[i], q.poll());
139		}
140
141		/**
142		* The comparator used in constructor is used
143		*/
144		public void testConstructor7() {
145	<	try {
146	<	MyReverseComparator cmp = new MyReverseComparator();
147	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE, cmp);
148	<	assertEquals(cmp, q.comparator());
149	<	Integer[] ints = new Integer[SIZE];
150	<	for (int i = 0; i < SIZE; ++i)
151	<	ints[i] = new Integer(i);
152	<	q.addAll(Arrays.asList(ints));
153	<	for (int i = SIZE-1; i >= 0; --i)
134	<	assertEquals(ints[i], q.poll());
135	<	}
136	<	finally {}
145	>	MyReverseComparator cmp = new MyReverseComparator();
146	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE, cmp);
147	>	assertEquals(cmp, q.comparator());
148	>	Integer[] ints = new Integer[SIZE];
149	>	for (int i = 0; i < SIZE; ++i)
150	>	ints[i] = new Integer(i);
151	>	q.addAll(Arrays.asList(ints));
152	>	for (int i = SIZE-1; i >= 0; --i)
153	>	assertEquals(ints[i], q.poll());
154		}
155
156		/**
#	Line 152 | Line 169 | public class PriorityBlockingQueueTest e
169		}
170
171		/**
172	<	* remainingCapacity does not change when elementa added or removed,
172	>	* remainingCapacity does not change when elements added or removed,
173		* but size does
174		*/
175		public void testRemainingCapacity() {
#	Line 170 | Line 187 | public class PriorityBlockingQueueTest e
187		}
188
189		/**
173	–	* offer(null) throws NPE
174	–	*/
175	–	public void testOfferNull() {
176	–	try {
177	–	PriorityBlockingQueue q = new PriorityBlockingQueue(1);
178	–	q.offer(null);
179	–	shouldThrow();
180	–	} catch (NullPointerException success) { }
181	–	}
182	–
183	–	/**
190		* Offer of comparable element succeeds
191		*/
192		public void testOffer() {
#	Line 199 | Line 205 | public class PriorityBlockingQueueTest e
205		q.offer(new Object());
206		q.offer(new Object());
207		shouldThrow();
208	<	}
203	<	catch(ClassCastException success) {}
208	>	} catch (ClassCastException success) {}
209		}
210
211		/**
#	Line 215 | Line 220 | public class PriorityBlockingQueueTest e
220		}
221
222		/**
223	<	* addAll(null) throws NPE
223	>	* addAll(this) throws IAE
224		*/
225	<	public void testAddAll1() {
225	>	public void testAddAllSelf() {
226		try {
227	<	PriorityBlockingQueue q = new PriorityBlockingQueue(1);
228	<	q.addAll(null);
224	<	shouldThrow();
225	<	}
226	<	catch (NullPointerException success) {}
227	<	}
228	<	/**
229	<	* addAll of a collection with null elements throws NPE
230	<	*/
231	<	public void testAddAll2() {
232	<	try {
233	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
234	<	Integer[] ints = new Integer[SIZE];
235	<	q.addAll(Arrays.asList(ints));
227	>	PriorityBlockingQueue q = populatedQueue(SIZE);
228	>	q.addAll(q);
229		shouldThrow();
230	<	}
238	<	catch (NullPointerException success) {}
230	>	} catch (IllegalArgumentException success) {}
231		}
232	+
233		/**
234		* addAll of a collection with any null elements throws NPE after
235		* possibly adding some elements
#	Line 249 | Line 242 | public class PriorityBlockingQueueTest e
242		ints[i] = new Integer(i);
243		q.addAll(Arrays.asList(ints));
244		shouldThrow();
245	<	}
253	<	catch (NullPointerException success) {}
245	>	} catch (NullPointerException success) {}
246		}
247
248		/**
249		* Queue contains all elements of successful addAll
250		*/
251		public void testAddAll5() {
252	<	try {
253	<	Integer[] empty = new Integer[0];
254	<	Integer[] ints = new Integer[SIZE];
255	<	for (int i = SIZE-1; i >= 0; --i)
256	<	ints[i] = new Integer(i);
257	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
258	<	assertFalse(q.addAll(Arrays.asList(empty)));
259	<	assertTrue(q.addAll(Arrays.asList(ints)));
260	<	for (int i = 0; i < SIZE; ++i)
269	<	assertEquals(ints[i], q.poll());
270	<	}
271	<	finally {}
252	>	Integer[] empty = new Integer[0];
253	>	Integer[] ints = new Integer[SIZE];
254	>	for (int i = SIZE-1; i >= 0; --i)
255	>	ints[i] = new Integer(i);
256	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
257	>	assertFalse(q.addAll(Arrays.asList(empty)));
258	>	assertTrue(q.addAll(Arrays.asList(ints)));
259	>	for (int i = 0; i < SIZE; ++i)
260	>	assertEquals(ints[i], q.poll());
261		}
262
263		/**
275	–	* put(null) throws NPE
276	–	*/
277	–	public void testPutNull() {
278	–	try {
279	–	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
280	–	q.put(null);
281	–	shouldThrow();
282	–	}
283	–	catch (NullPointerException success){
284	–	}
285	–	}
286	–
287	–	/**
264		* all elements successfully put are contained
265		*/
266	<	public void testPut() {
267	<	try {
268	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
269	<	for (int i = 0; i < SIZE; ++i) {
270	<	Integer I = new Integer(i);
271	<	q.put(I);
296	<	assertTrue(q.contains(I));
297	<	}
298	<	assertEquals(SIZE, q.size());
299	<	}
300	<	finally {
266	>	public void testPut() {
267	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
268	>	for (int i = 0; i < SIZE; ++i) {
269	>	Integer x = new Integer(i);
270	>	q.put(x);
271	>	assertTrue(q.contains(x));
272		}
273	+	assertEquals(SIZE, q.size());
274		}
275
276		/**
277		* put doesn't block waiting for take
278		*/
279	<	public void testPutWithTake() {
279	>	public void testPutWithTake() throws InterruptedException {
280		final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
281	<	Thread t = new Thread(new Runnable() {
282	<	public void run() {
283	<	int added = 0;
284	<	try {
285	<	q.put(new Integer(0));
286	<	++added;
287	<	q.put(new Integer(0));
288	<	++added;
289	<	q.put(new Integer(0));
290	<	++added;
319	<	q.put(new Integer(0));
320	<	++added;
321	<	threadAssertTrue(added == 4);
322	<	} finally {
323	<	}
324	<	}
325	<	});
326	<	try {
327	<	t.start();
328	<	Thread.sleep(SHORT_DELAY_MS);
329	<	q.take();
330	<	t.interrupt();
331	<	t.join();
332	<	} catch (Exception e){
333	<	unexpectedException();
334	<	}
281	>	final int size = 4;
282	>	Thread t = newStartedThread(new CheckedRunnable() {
283	>	public void realRun() {
284	>	for (int i = 0; i < size; i++)
285	>	q.put(new Integer(0));
286	>	}});
287	>
288	>	awaitTermination(t);
289	>	assertEquals(size, q.size());
290	>	q.take();
291		}
292
293		/**
294		* timed offer does not time out
295		*/
296	<	public void testTimedOffer() {
296	>	public void testTimedOffer() throws InterruptedException {
297		final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
298	<	Thread t = new Thread(new Runnable() {
299	<	public void run() {
300	<	try {
301	<	q.put(new Integer(0));
302	<	q.put(new Integer(0));
303	<	threadAssertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
304	<	threadAssertTrue(q.offer(new Integer(0), LONG_DELAY_MS, TimeUnit.MILLISECONDS));
349	<	} finally { }
350	<	}
351	<	});
352	<
353	<	try {
354	<	t.start();
355	<	Thread.sleep(SMALL_DELAY_MS);
356	<	t.interrupt();
357	<	t.join();
358	<	} catch (Exception e){
359	<	unexpectedException();
360	<	}
361	<	}
298	>	Thread t = newStartedThread(new CheckedRunnable() {
299	>	public void realRun() {
300	>	q.put(new Integer(0));
301	>	q.put(new Integer(0));
302	>	assertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, MILLISECONDS));
303	>	assertTrue(q.offer(new Integer(0), LONG_DELAY_MS, MILLISECONDS));
304	>	}});
305
306	<	/**
364	<	* take retrieves elements in priority order
365	<	*/
366	<	public void testTake() {
367	<	try {
368	<	PriorityBlockingQueue q = populatedQueue(SIZE);
369	<	for (int i = 0; i < SIZE; ++i) {
370	<	assertEquals(i, ((Integer)q.take()).intValue());
371	<	}
372	<	} catch (InterruptedException e){
373	<	unexpectedException();
374	<	}
306	>	awaitTermination(t);
307		}
308
309		/**
310	<	* take blocks interruptibly when empty
310	>	* take retrieves elements in priority order
311		*/
312	<	public void testTakeFromEmpty() {
313	<	final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
314	<	Thread t = new Thread(new Runnable() {
315	<	public void run() {
384	<	try {
385	<	q.take();
386	<	threadShouldThrow();
387	<	} catch (InterruptedException success){ }
388	<	}
389	<	});
390	<	try {
391	<	t.start();
392	<	Thread.sleep(SHORT_DELAY_MS);
393	<	t.interrupt();
394	<	t.join();
395	<	} catch (Exception e){
396	<	unexpectedException();
312	>	public void testTake() throws InterruptedException {
313	>	PriorityBlockingQueue q = populatedQueue(SIZE);
314	>	for (int i = 0; i < SIZE; ++i) {
315	>	assertEquals(i, q.take());
316		}
317		}
318
319		/**
320		* Take removes existing elements until empty, then blocks interruptibly
321		*/
322	<	public void testBlockingTake() {
323	<	Thread t = new Thread(new Runnable() {
324	<	public void run() {
325	<	try {
326	<	PriorityBlockingQueue q = populatedQueue(SIZE);
327	<	for (int i = 0; i < SIZE; ++i) {
328	<	threadAssertEquals(i, ((Integer)q.take()).intValue());
329	<	}
411	<	q.take();
412	<	threadShouldThrow();
413	<	} catch (InterruptedException success){
414	<	}
415	<	}});
416	<	t.start();
417	<	try {
418	<	Thread.sleep(SHORT_DELAY_MS);
419	<	t.interrupt();
420	<	t.join();
421	<	}
422	<	catch (InterruptedException ie) {
423	<	unexpectedException();
424	<	}
425	<	}
322	>	public void testBlockingTake() throws InterruptedException {
323	>	final PriorityBlockingQueue q = populatedQueue(SIZE);
324	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
325	>	Thread t = newStartedThread(new CheckedRunnable() {
326	>	public void realRun() throws InterruptedException {
327	>	for (int i = 0; i < SIZE; ++i) {
328	>	assertEquals(i, q.take());
329	>	}
330
331	+	Thread.currentThread().interrupt();
332	+	try {
333	+	q.take();
334	+	shouldThrow();
335	+	} catch (InterruptedException success) {}
336	+	assertFalse(Thread.interrupted());
337	+
338	+	pleaseInterrupt.countDown();
339	+	try {
340	+	q.take();
341	+	shouldThrow();
342	+	} catch (InterruptedException success) {}
343	+	assertFalse(Thread.interrupted());
344	+	}});
345	+
346	+	await(pleaseInterrupt);
347	+	assertThreadStaysAlive(t);
348	+	t.interrupt();
349	+	awaitTermination(t);
350	+	}
351
352		/**
353		* poll succeeds unless empty
#	Line 431 | Line 355 | public class PriorityBlockingQueueTest e
355		public void testPoll() {
356		PriorityBlockingQueue q = populatedQueue(SIZE);
357		for (int i = 0; i < SIZE; ++i) {
358	<	assertEquals(i, ((Integer)q.poll()).intValue());
358	>	assertEquals(i, q.poll());
359		}
360	<	assertNull(q.poll());
360	>	assertNull(q.poll());
361		}
362
363		/**
364	<	* timed pool with zero timeout succeeds when non-empty, else times out
364	>	* timed poll with zero timeout succeeds when non-empty, else times out
365		*/
366	<	public void testTimedPoll0() {
367	<	try {
368	<	PriorityBlockingQueue q = populatedQueue(SIZE);
369	<	for (int i = 0; i < SIZE; ++i) {
370	<	assertEquals(i, ((Integer)q.poll(0, TimeUnit.MILLISECONDS)).intValue());
371	<	}
448	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
449	<	} catch (InterruptedException e){
450	<	unexpectedException();
451	<	}
366	>	public void testTimedPoll0() throws InterruptedException {
367	>	PriorityBlockingQueue q = populatedQueue(SIZE);
368	>	for (int i = 0; i < SIZE; ++i) {
369	>	assertEquals(i, q.poll(0, MILLISECONDS));
370	>	}
371	>	assertNull(q.poll(0, MILLISECONDS));
372		}
373
374		/**
375	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
375	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
376		*/
377	<	public void testTimedPoll() {
378	<	try {
379	<	PriorityBlockingQueue q = populatedQueue(SIZE);
380	<	for (int i = 0; i < SIZE; ++i) {
381	<	assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
382	<	}
383	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
384	<	} catch (InterruptedException e){
385	<	unexpectedException();
386	<	}
377	>	public void testTimedPoll() throws InterruptedException {
378	>	PriorityBlockingQueue<Integer> q = populatedQueue(SIZE);
379	>	for (int i = 0; i < SIZE; ++i) {
380	>	long startTime = System.nanoTime();
381	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
382	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
383	>	}
384	>	long startTime = System.nanoTime();
385	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
386	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
387	>	checkEmpty(q);
388		}
389
390		/**
391		* Interrupted timed poll throws InterruptedException instead of
392		* returning timeout status
393		*/
394	<	public void testInterruptedTimedPoll() {
395	<	Thread t = new Thread(new Runnable() {
396	<	public void run() {
397	<	try {
398	<	PriorityBlockingQueue q = populatedQueue(SIZE);
399	<	for (int i = 0; i < SIZE; ++i) {
400	<	threadAssertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
401	<	}
402	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
482	<	} catch (InterruptedException success){
483	<	}
484	<	}});
485	<	t.start();
486	<	try {
487	<	Thread.sleep(SHORT_DELAY_MS);
488	<	t.interrupt();
489	<	t.join();
490	<	}
491	<	catch (InterruptedException ie) {
492	<	unexpectedException();
493	<	}
494	<	}
495	<
496	<	/**
497	<	*  timed poll before a delayed offer fails; after offer succeeds;
498	<	*  on interruption throws
499	<	*/
500	<	public void testTimedPollWithOffer() {
501	<	final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
502	<	Thread t = new Thread(new Runnable() {
503	<	public void run() {
504	<	try {
505	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
506	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
507	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
508	<	threadShouldThrow();
509	<	} catch (InterruptedException success) { }
394	>	public void testInterruptedTimedPoll() throws InterruptedException {
395	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
396	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
397	>	Thread t = newStartedThread(new CheckedRunnable() {
398	>	public void realRun() throws InterruptedException {
399	>	for (int i = 0; i < SIZE; ++i) {
400	>	long t0 = System.nanoTime();
401	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
402	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
403		}
404	<	});
405	<	try {
406	<	t.start();
407	<	Thread.sleep(SMALL_DELAY_MS);
408	<	assertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
409	<	t.interrupt();
410	<	t.join();
411	<	} catch (Exception e){
412	<	unexpectedException();
520	<	}
521	<	}
404	>	long t0 = System.nanoTime();
405	>	aboutToWait.countDown();
406	>	try {
407	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
408	>	shouldThrow();
409	>	} catch (InterruptedException success) {
410	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
411	>	}
412	>	}});
413
414	+	aboutToWait.await();
415	+	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
416	+	t.interrupt();
417	+	awaitTermination(t, MEDIUM_DELAY_MS);
418	+	}
419
420		/**
421		* peek returns next element, or null if empty
#	Line 527 | Line 423 | public class PriorityBlockingQueueTest e
423		public void testPeek() {
424		PriorityBlockingQueue q = populatedQueue(SIZE);
425		for (int i = 0; i < SIZE; ++i) {
426	<	assertEquals(i, ((Integer)q.peek()).intValue());
427	<	q.poll();
426	>	assertEquals(i, q.peek());
427	>	assertEquals(i, q.poll());
428		assertTrue(q.peek() == null ||
429	<	i != ((Integer)q.peek()).intValue());
429	>	!q.peek().equals(i));
430		}
431	<	assertNull(q.peek());
431	>	assertNull(q.peek());
432		}
433
434		/**
#	Line 541 | Line 437 | public class PriorityBlockingQueueTest e
437		public void testElement() {
438		PriorityBlockingQueue q = populatedQueue(SIZE);
439		for (int i = 0; i < SIZE; ++i) {
440	<	assertEquals(i, ((Integer)q.element()).intValue());
441	<	q.poll();
440	>	assertEquals(i, q.element());
441	>	assertEquals(i, q.poll());
442		}
443		try {
444		q.element();
445		shouldThrow();
446	<	}
551	<	catch (NoSuchElementException success) {}
446	>	} catch (NoSuchElementException success) {}
447		}
448
449		/**
#	Line 557 | Line 452 | public class PriorityBlockingQueueTest e
452		public void testRemove() {
453		PriorityBlockingQueue q = populatedQueue(SIZE);
454		for (int i = 0; i < SIZE; ++i) {
455	<	assertEquals(i, ((Integer)q.remove()).intValue());
455	>	assertEquals(i, q.remove());
456		}
457		try {
458		q.remove();
459		shouldThrow();
460	<	} catch (NoSuchElementException success){
566	<	}
460	>	} catch (NoSuchElementException success) {}
461		}
462
463		/**
570	–	* remove(x) removes x and returns true if present
571	–	*/
572	–	public void testRemoveElement() {
573	–	PriorityBlockingQueue q = populatedQueue(SIZE);
574	–	for (int i = 1; i < SIZE; i+=2) {
575	–	assertTrue(q.remove(new Integer(i)));
576	–	}
577	–	for (int i = 0; i < SIZE; i+=2) {
578	–	assertTrue(q.remove(new Integer(i)));
579	–	assertFalse(q.remove(new Integer(i+1)));
580	–	}
581	–	assertTrue(q.isEmpty());
582	–	}
583	–
584	–	/**
464		* contains(x) reports true when elements added but not yet removed
465		*/
466		public void testContains() {
#	Line 601 | Line 480 | public class PriorityBlockingQueueTest e
480		q.clear();
481		assertTrue(q.isEmpty());
482		assertEquals(0, q.size());
483	<	assertEquals(NOCAP, q.remainingCapacity());
605	<	q.add(new Integer(1));
483	>	q.add(one);
484		assertFalse(q.isEmpty());
485	+	assertTrue(q.contains(one));
486		q.clear();
487		assertTrue(q.isEmpty());
488		}
#	Line 651 | Line 530 | public class PriorityBlockingQueueTest e
530		assertTrue(q.removeAll(p));
531		assertEquals(SIZE-i, q.size());
532		for (int j = 0; j < i; ++j) {
533	<	Integer I = (Integer)(p.remove());
534	<	assertFalse(q.contains(I));
533	>	Integer x = (Integer)(p.remove());
534	>	assertFalse(q.contains(x));
535		}
536		}
537		}
538
539		/**
540	<	*  toArray contains all elements
540	>	* toArray contains all elements
541		*/
542	<	public void testToArray() {
542	>	public void testToArray() throws InterruptedException {
543		PriorityBlockingQueue q = populatedQueue(SIZE);
544	<	Object[] o = q.toArray();
544	>	Object[] o = q.toArray();
545		Arrays.sort(o);
546	<	try {
547	<	for(int i = 0; i < o.length; i++)
669	<	assertEquals(o[i], q.take());
670	<	} catch (InterruptedException e){
671	<	unexpectedException();
672	<	}
546	>	for (int i = 0; i < o.length; i++)
547	>	assertSame(o[i], q.take());
548		}
549
550		/**
551		* toArray(a) contains all elements
552		*/
553	<	public void testToArray2() {
554	<	PriorityBlockingQueue q = populatedQueue(SIZE);
555	<	Integer[] ints = new Integer[SIZE];
556	<	ints = (Integer[])q.toArray(ints);
553	>	public void testToArray2() throws InterruptedException {
554	>	PriorityBlockingQueue<Integer> q = populatedQueue(SIZE);
555	>	Integer[] ints = new Integer[SIZE];
556	>	Integer[] array = q.toArray(ints);
557	>	assertSame(ints, array);
558		Arrays.sort(ints);
559	<	try {
560	<	for(int i = 0; i < ints.length; i++)
685	<	assertEquals(ints[i], q.take());
686	<	} catch (InterruptedException e){
687	<	unexpectedException();
688	<	}
559	>	for (int i = 0; i < ints.length; i++)
560	>	assertSame(ints[i], q.take());
561		}
562	<
562	>
563	>	/**
564	>	* toArray(incompatible array type) throws ArrayStoreException
565	>	*/
566	>	public void testToArray1_BadArg() {
567	>	PriorityBlockingQueue q = populatedQueue(SIZE);
568	>	try {
569	>	q.toArray(new String[10]);
570	>	shouldThrow();
571	>	} catch (ArrayStoreException success) {}
572	>	}
573	>
574		/**
575		* iterator iterates through all elements
576		*/
577		public void testIterator() {
578		PriorityBlockingQueue q = populatedQueue(SIZE);
579	<	int i = 0;
580	<	Iterator it = q.iterator();
581	<	while(it.hasNext()) {
579	>	Iterator it = q.iterator();
580	>	int i;
581	>	for (i = 0; it.hasNext(); i++)
582		assertTrue(q.contains(it.next()));
700	–	++i;
701	–	}
583		assertEquals(i, SIZE);
584	+	assertIteratorExhausted(it);
585	+	}
586	+
587	+	/**
588	+	* iterator of empty collection has no elements
589	+	*/
590	+	public void testEmptyIterator() {
591	+	assertIteratorExhausted(new PriorityBlockingQueue().iterator());
592		}
593
594		/**
595		* iterator.remove removes current element
596		*/
597	<	public void testIteratorRemove () {
597	>	public void testIteratorRemove() {
598		final PriorityBlockingQueue q = new PriorityBlockingQueue(3);
599		q.add(new Integer(2));
600		q.add(new Integer(1));
#	Line 721 | Line 610 | public class PriorityBlockingQueueTest e
610		assertFalse(it.hasNext());
611		}
612
724	–
613		/**
614		* toString contains toStrings of elements
615		*/
#	Line 729 | Line 617 | public class PriorityBlockingQueueTest e
617		PriorityBlockingQueue q = populatedQueue(SIZE);
618		String s = q.toString();
619		for (int i = 0; i < SIZE; ++i) {
620	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
620	>	assertTrue(s.contains(String.valueOf(i)));
621		}
622	<	}
622	>	}
623
624		/**
625	<	* offer transfers elements across Executor tasks
625	>	* timed poll transfers elements across Executor tasks
626		*/
627		public void testPollInExecutor() {
628		final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
629	+	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
630		ExecutorService executor = Executors.newFixedThreadPool(2);
631	<	executor.execute(new Runnable() {
632	<	public void run() {
633	<	threadAssertNull(q.poll());
634	<	try {
635	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
636	<	threadAssertTrue(q.isEmpty());
637	<	}
638	<	catch (InterruptedException e) {
639	<	threadUnexpectedException();
640	<	}
641	<	}
642	<	});
631	>	executor.execute(new CheckedRunnable() {
632	>	public void realRun() throws InterruptedException {
633	>	assertNull(q.poll());
634	>	threadsStarted.await();
635	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
636	>	checkEmpty(q);
637	>	}});
638	>
639	>	executor.execute(new CheckedRunnable() {
640	>	public void realRun() throws InterruptedException {
641	>	threadsStarted.await();
642	>	q.put(one);
643	>	}});
644
755	–	executor.execute(new Runnable() {
756	–	public void run() {
757	–	try {
758	–	Thread.sleep(SMALL_DELAY_MS);
759	–	q.put(new Integer(1));
760	–	}
761	–	catch (InterruptedException e) {
762	–	threadUnexpectedException();
763	–	}
764	–	}
765	–	});
766	–
645		joinPool(executor);
646		}
647
648		/**
649	<	* A deserialized serialized queue has same elements
649	>	* A deserialized serialized queue has same elements
650		*/
651	<	public void testSerialization() {
651	>	public void testSerialization() throws Exception {
652	>	Queue x = populatedQueue(SIZE);
653	>	Queue y = serialClone(x);
654	>
655	>	assertNotSame(x, y);
656	>	assertEquals(x.size(), y.size());
657	>	while (!x.isEmpty()) {
658	>	assertFalse(y.isEmpty());
659	>	assertEquals(x.remove(), y.remove());
660	>	}
661	>	assertTrue(y.isEmpty());
662	>	}
663	>
664	>	/**
665	>	* drainTo(c) empties queue into another collection c
666	>	*/
667	>	public void testDrainTo() {
668		PriorityBlockingQueue q = populatedQueue(SIZE);
669	<	try {
670	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
671	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
672	<	out.writeObject(q);
673	<	out.close();
674	<
675	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
676	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
677	<	PriorityBlockingQueue r = (PriorityBlockingQueue)in.readObject();
678	<	assertEquals(q.size(), r.size());
679	<	while (!q.isEmpty())
680	<	assertEquals(q.remove(), r.remove());
681	<	} catch(Exception e){
682	<	unexpectedException();
669	>	ArrayList l = new ArrayList();
670	>	q.drainTo(l);
671	>	assertEquals(0, q.size());
672	>	assertEquals(SIZE, l.size());
673	>	for (int i = 0; i < SIZE; ++i)
674	>	assertEquals(l.get(i), new Integer(i));
675	>	q.add(zero);
676	>	q.add(one);
677	>	assertFalse(q.isEmpty());
678	>	assertTrue(q.contains(zero));
679	>	assertTrue(q.contains(one));
680	>	l.clear();
681	>	q.drainTo(l);
682	>	assertEquals(0, q.size());
683	>	assertEquals(2, l.size());
684	>	for (int i = 0; i < 2; ++i)
685	>	assertEquals(l.get(i), new Integer(i));
686	>	}
687	>
688	>	/**
689	>	* drainTo empties queue
690	>	*/
691	>	public void testDrainToWithActivePut() throws InterruptedException {
692	>	final PriorityBlockingQueue q = populatedQueue(SIZE);
693	>	Thread t = new Thread(new CheckedRunnable() {
694	>	public void realRun() {
695	>	q.put(new Integer(SIZE+1));
696	>	}});
697	>
698	>	t.start();
699	>	ArrayList l = new ArrayList();
700	>	q.drainTo(l);
701	>	assertTrue(l.size() >= SIZE);
702	>	for (int i = 0; i < SIZE; ++i)
703	>	assertEquals(l.get(i), new Integer(i));
704	>	t.join();
705	>	assertTrue(q.size() + l.size() >= SIZE);
706	>	}
707	>
708	>	/**
709	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
710	>	*/
711	>	public void testDrainToN() {
712	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE*2);
713	>	for (int i = 0; i < SIZE + 2; ++i) {
714	>	for (int j = 0; j < SIZE; j++)
715	>	assertTrue(q.offer(new Integer(j)));
716	>	ArrayList l = new ArrayList();
717	>	q.drainTo(l, i);
718	>	int k = (i < SIZE) ? i : SIZE;
719	>	assertEquals(k, l.size());
720	>	assertEquals(SIZE-k, q.size());
721	>	for (int j = 0; j < k; ++j)
722	>	assertEquals(l.get(j), new Integer(j));
723	>	do {} while (q.poll() != null);
724	>	}
725	>	}
726	>
727	>	/**
728	>	* remove(null), contains(null) always return false
729	>	*/
730	>	public void testNeverContainsNull() {
731	>	Collection<?>[] qs = {
732	>	new PriorityBlockingQueue<Object>(),
733	>	populatedQueue(2),
734	>	};
735	>
736	>	for (Collection<?> q : qs) {
737	>	assertFalse(q.contains(null));
738	>	assertFalse(q.remove(null));
739		}
740		}
741

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