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Comparing jsr166/src/test/tck/PriorityBlockingQueueTest.java (file contents):
Revision 1.14 by jsr166, Mon Nov 16 05:30:08 2009 UTC vs.
Revision 1.71 by jsr166, Sat Mar 11 18:20:47 2017 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.*;
11	<	import java.util.concurrent.*;
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	>	main(suite(), args);
42		}
43	+
44		public static Test suite() {
45	<	return new TestSuite(PriorityBlockingQueueTest.class);
45	>	class Implementation implements CollectionImplementation {
46	>	public Class<?> klazz() { return PriorityBlockingQueue.class; }
47	>	public Collection emptyCollection() { return new PriorityBlockingQueue(); }
48	>	public Object makeElement(int i) { return i; }
49	>	public boolean isConcurrent() { return true; }
50	>	public boolean permitsNulls() { return false; }
51	>	}
52	>	return newTestSuite(PriorityBlockingQueueTest.class,
53	>	new Generic().testSuite(),
54	>	new InitialCapacity().testSuite(),
55	>	CollectionTest.testSuite(new Implementation()));
56		}
57
22	–	private static final int NOCAP = Integer.MAX_VALUE;
23	–
58		/** Sample Comparator */
59		static class MyReverseComparator implements Comparator {
60		public int compare(Object x, Object y) {
61	<	int i = ((Integer)x).intValue();
28	<	int j = ((Integer)y).intValue();
29	<	if (i < j) return 1;
30	<	if (i > j) return -1;
31	<	return 0;
61	>	return ((Comparable)y).compareTo(x);
62		}
63		}
64
65		/**
66	<	* Create a queue of given size containing consecutive
67	<	* Integers 0 ... n.
66	>	* Returns a new queue of given size containing consecutive
67	>	* Integers 0 ... n - 1.
68		*/
69	<	private PriorityBlockingQueue populatedQueue(int n) {
70	<	PriorityBlockingQueue q = new PriorityBlockingQueue(n);
69	>	private static PriorityBlockingQueue<Integer> populatedQueue(int n) {
70	>	PriorityBlockingQueue<Integer> q =
71	>	new PriorityBlockingQueue<Integer>(n);
72		assertTrue(q.isEmpty());
73	<	for (int i = n-1; i >= 0; i-=2)
74	<	assertTrue(q.offer(new Integer(i)));
75	<	for (int i = (n & 1); i < n; i+=2)
76	<	assertTrue(q.offer(new Integer(i)));
73	>	for (int i = n - 1; i >= 0; i -= 2)
74	>	assertTrue(q.offer(new Integer(i)));
75	>	for (int i = (n & 1); i < n; i += 2)
76	>	assertTrue(q.offer(new Integer(i)));
77		assertFalse(q.isEmpty());
78	<	assertEquals(NOCAP, q.remainingCapacity());
79	<	assertEquals(n, q.size());
78	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
79	>	assertEquals(n, q.size());
80	>	assertEquals((Integer) 0, q.peek());
81		return q;
82		}
83
#	Line 53 | Line 85 | public class PriorityBlockingQueueTest e
85		* A new queue has unbounded capacity
86		*/
87		public void testConstructor1() {
88	<	assertEquals(NOCAP, new PriorityBlockingQueue(SIZE).remainingCapacity());
88	>	assertEquals(Integer.MAX_VALUE,
89	>	new PriorityBlockingQueue(SIZE).remainingCapacity());
90		}
91
92		/**
93	<	* Constructor throws IAE if  capacity argument nonpositive
93	>	* Constructor throws IAE if capacity argument nonpositive
94		*/
95		public void testConstructor2() {
96		try {
97	<	PriorityBlockingQueue q = new PriorityBlockingQueue(0);
97	>	new PriorityBlockingQueue(0);
98		shouldThrow();
99	<	}
67	<	catch (IllegalArgumentException success) {}
99	>	} catch (IllegalArgumentException success) {}
100		}
101
102		/**
#	Line 72 | Line 104 | public class PriorityBlockingQueueTest e
104		*/
105		public void testConstructor3() {
106		try {
107	<	PriorityBlockingQueue q = new PriorityBlockingQueue(null);
107	>	new PriorityBlockingQueue(null);
108		shouldThrow();
109	<	}
78	<	catch (NullPointerException success) {}
109	>	} catch (NullPointerException success) {}
110		}
111
112		/**
113		* Initializing from Collection of null elements throws NPE
114		*/
115		public void testConstructor4() {
116	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
117		try {
118	<	Integer[] ints = new Integer[SIZE];
87	<	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
118	>	new PriorityBlockingQueue(elements);
119		shouldThrow();
120	<	}
90	<	catch (NullPointerException success) {}
120	>	} catch (NullPointerException success) {}
121		}
122
123		/**
124		* Initializing from Collection with some null elements throws NPE
125		*/
126		public void testConstructor5() {
127	+	Integer[] ints = new Integer[SIZE];
128	+	for (int i = 0; i < SIZE - 1; ++i)
129	+	ints[i] = i;
130	+	Collection<Integer> elements = Arrays.asList(ints);
131		try {
132	<	Integer[] ints = new Integer[SIZE];
99	<	for (int i = 0; i < SIZE-1; ++i)
100	<	ints[i] = new Integer(i);
101	<	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
132	>	new PriorityBlockingQueue(elements);
133		shouldThrow();
134	<	}
104	<	catch (NullPointerException success) {}
134	>	} catch (NullPointerException success) {}
135		}
136
137		/**
138		* Queue contains all elements of collection used to initialize
139		*/
140		public void testConstructor6() {
141	<	try {
142	<	Integer[] ints = new Integer[SIZE];
143	<	for (int i = 0; i < SIZE; ++i)
144	<	ints[i] = new Integer(i);
145	<	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
146	<	for (int i = 0; i < SIZE; ++i)
117	<	assertEquals(ints[i], q.poll());
118	<	}
119	<	finally {}
141	>	Integer[] ints = new Integer[SIZE];
142	>	for (int i = 0; i < SIZE; ++i)
143	>	ints[i] = i;
144	>	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
145	>	for (int i = 0; i < SIZE; ++i)
146	>	assertEquals(ints[i], q.poll());
147		}
148
149		/**
150		* The comparator used in constructor is used
151		*/
152		public void testConstructor7() {
153	<	try {
154	<	MyReverseComparator cmp = new MyReverseComparator();
155	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE, cmp);
156	<	assertEquals(cmp, q.comparator());
157	<	Integer[] ints = new Integer[SIZE];
158	<	for (int i = 0; i < SIZE; ++i)
159	<	ints[i] = new Integer(i);
160	<	q.addAll(Arrays.asList(ints));
161	<	for (int i = SIZE-1; i >= 0; --i)
135	<	assertEquals(ints[i], q.poll());
136	<	}
137	<	finally {}
153	>	MyReverseComparator cmp = new MyReverseComparator();
154	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE, cmp);
155	>	assertEquals(cmp, q.comparator());
156	>	Integer[] ints = new Integer[SIZE];
157	>	for (int i = 0; i < SIZE; ++i)
158	>	ints[i] = new Integer(i);
159	>	q.addAll(Arrays.asList(ints));
160	>	for (int i = SIZE - 1; i >= 0; --i)
161	>	assertEquals(ints[i], q.poll());
162		}
163
164		/**
#	Line 143 | Line 167 | public class PriorityBlockingQueueTest e
167		public void testEmpty() {
168		PriorityBlockingQueue q = new PriorityBlockingQueue(2);
169		assertTrue(q.isEmpty());
170	<	assertEquals(NOCAP, q.remainingCapacity());
170	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
171		q.add(one);
172		assertFalse(q.isEmpty());
173		q.add(two);
#	Line 153 | Line 177 | public class PriorityBlockingQueueTest e
177		}
178
179		/**
180	<	* remainingCapacity does not change when elements added or removed,
157	<	* but size does
180	>	* remainingCapacity() always returns Integer.MAX_VALUE
181		*/
182		public void testRemainingCapacity() {
183	<	PriorityBlockingQueue q = populatedQueue(SIZE);
183	>	BlockingQueue q = populatedQueue(SIZE);
184		for (int i = 0; i < SIZE; ++i) {
185	<	assertEquals(NOCAP, q.remainingCapacity());
186	<	assertEquals(SIZE-i, q.size());
187	<	q.remove();
185	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
186	>	assertEquals(SIZE - i, q.size());
187	>	assertEquals(i, q.remove());
188		}
189		for (int i = 0; i < SIZE; ++i) {
190	<	assertEquals(NOCAP, q.remainingCapacity());
190	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
191		assertEquals(i, q.size());
192	<	q.add(new Integer(i));
192	>	assertTrue(q.add(i));
193		}
194		}
195
196		/**
174	–	* offer(null) throws NPE
175	–	*/
176	–	public void testOfferNull() {
177	–	try {
178	–	PriorityBlockingQueue q = new PriorityBlockingQueue(1);
179	–	q.offer(null);
180	–	shouldThrow();
181	–	} catch (NullPointerException success) { }
182	–	}
183	–
184	–	/**
185	–	* add(null) throws NPE
186	–	*/
187	–	public void testAddNull() {
188	–	try {
189	–	PriorityBlockingQueue q = new PriorityBlockingQueue(1);
190	–	q.add(null);
191	–	shouldThrow();
192	–	} catch (NullPointerException success) { }
193	–	}
194	–
195	–	/**
197		* Offer of comparable element succeeds
198		*/
199		public void testOffer() {
#	Line 205 | Line 206 | public class PriorityBlockingQueueTest e
206		* Offer of non-Comparable throws CCE
207		*/
208		public void testOfferNonComparable() {
209	+	PriorityBlockingQueue q = new PriorityBlockingQueue(1);
210		try {
209	–	PriorityBlockingQueue q = new PriorityBlockingQueue(1);
210	–	q.offer(new Object());
211	–	q.offer(new Object());
211		q.offer(new Object());
212		shouldThrow();
213	+	} catch (ClassCastException success) {
214	+	assertTrue(q.isEmpty());
215	+	assertEquals(0, q.size());
216	+	assertNull(q.poll());
217		}
215	–	catch (ClassCastException success) {}
218		}
219
220		/**
#	Line 227 | Line 229 | public class PriorityBlockingQueueTest e
229		}
230
231		/**
230	–	* addAll(null) throws NPE
231	–	*/
232	–	public void testAddAll1() {
233	–	try {
234	–	PriorityBlockingQueue q = new PriorityBlockingQueue(1);
235	–	q.addAll(null);
236	–	shouldThrow();
237	–	}
238	–	catch (NullPointerException success) {}
239	–	}
240	–
241	–	/**
232		* addAll(this) throws IAE
233		*/
234		public void testAddAllSelf() {
235	+	PriorityBlockingQueue q = populatedQueue(SIZE);
236		try {
246	–	PriorityBlockingQueue q = populatedQueue(SIZE);
237		q.addAll(q);
238		shouldThrow();
239	<	}
250	<	catch (IllegalArgumentException success) {}
239	>	} catch (IllegalArgumentException success) {}
240		}
241
242		/**
254	–	* addAll of a collection with null elements throws NPE
255	–	*/
256	–	public void testAddAll2() {
257	–	try {
258	–	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
259	–	Integer[] ints = new Integer[SIZE];
260	–	q.addAll(Arrays.asList(ints));
261	–	shouldThrow();
262	–	}
263	–	catch (NullPointerException success) {}
264	–	}
265	–	/**
243		* addAll of a collection with any null elements throws NPE after
244		* possibly adding some elements
245		*/
246		public void testAddAll3() {
247	+	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
248	+	Integer[] ints = new Integer[SIZE];
249	+	for (int i = 0; i < SIZE - 1; ++i)
250	+	ints[i] = new Integer(i);
251		try {
271	–	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
272	–	Integer[] ints = new Integer[SIZE];
273	–	for (int i = 0; i < SIZE-1; ++i)
274	–	ints[i] = new Integer(i);
252		q.addAll(Arrays.asList(ints));
253		shouldThrow();
254	<	}
278	<	catch (NullPointerException success) {}
254	>	} catch (NullPointerException success) {}
255		}
256
257		/**
258		* Queue contains all elements of successful addAll
259		*/
260		public void testAddAll5() {
261	<	try {
262	<	Integer[] empty = new Integer[0];
263	<	Integer[] ints = new Integer[SIZE];
264	<	for (int i = SIZE-1; i >= 0; --i)
265	<	ints[i] = new Integer(i);
266	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
267	<	assertFalse(q.addAll(Arrays.asList(empty)));
268	<	assertTrue(q.addAll(Arrays.asList(ints)));
269	<	for (int i = 0; i < SIZE; ++i)
294	<	assertEquals(ints[i], q.poll());
295	<	}
296	<	finally {}
261	>	Integer[] empty = new Integer[0];
262	>	Integer[] ints = new Integer[SIZE];
263	>	for (int i = SIZE - 1; i >= 0; --i)
264	>	ints[i] = new Integer(i);
265	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
266	>	assertFalse(q.addAll(Arrays.asList(empty)));
267	>	assertTrue(q.addAll(Arrays.asList(ints)));
268	>	for (int i = 0; i < SIZE; ++i)
269	>	assertEquals(ints[i], q.poll());
270		}
271
272		/**
300	–	* put(null) throws NPE
301	–	*/
302	–	public void testPutNull() {
303	–	try {
304	–	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
305	–	q.put(null);
306	–	shouldThrow();
307	–	}
308	–	catch (NullPointerException success) {
309	–	}
310	–	}
311	–
312	–	/**
273		* all elements successfully put are contained
274		*/
275	<	public void testPut() {
276	<	try {
277	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
278	<	for (int i = 0; i < SIZE; ++i) {
279	<	Integer I = new Integer(i);
280	<	q.put(I);
321	<	assertTrue(q.contains(I));
322	<	}
323	<	assertEquals(SIZE, q.size());
324	<	}
325	<	finally {
275	>	public void testPut() {
276	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
277	>	for (int i = 0; i < SIZE; ++i) {
278	>	Integer x = new Integer(i);
279	>	q.put(x);
280	>	assertTrue(q.contains(x));
281		}
282	+	assertEquals(SIZE, q.size());
283		}
284
285		/**
286		* put doesn't block waiting for take
287		*/
288	<	public void testPutWithTake() {
288	>	public void testPutWithTake() throws InterruptedException {
289		final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
290	<	Thread t = new Thread(new Runnable() {
291	<	public void run() {
292	<	int added = 0;
293	<	try {
294	<	q.put(new Integer(0));
295	<	++added;
296	<	q.put(new Integer(0));
297	<	++added;
298	<	q.put(new Integer(0));
299	<	++added;
344	<	q.put(new Integer(0));
345	<	++added;
346	<	threadAssertTrue(added == 4);
347	<	} finally {
348	<	}
349	<	}
350	<	});
351	<	try {
352	<	t.start();
353	<	Thread.sleep(SHORT_DELAY_MS);
354	<	q.take();
355	<	t.interrupt();
356	<	t.join();
357	<	} catch (Exception e) {
358	<	unexpectedException();
359	<	}
290	>	final int size = 4;
291	>	Thread t = newStartedThread(new CheckedRunnable() {
292	>	public void realRun() {
293	>	for (int i = 0; i < size; i++)
294	>	q.put(new Integer(0));
295	>	}});
296	>
297	>	awaitTermination(t);
298	>	assertEquals(size, q.size());
299	>	q.take();
300		}
301
302		/**
303		* timed offer does not time out
304		*/
305	<	public void testTimedOffer() {
305	>	public void testTimedOffer() throws InterruptedException {
306		final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
307	<	Thread t = new Thread(new Runnable() {
308	<	public void run() {
309	<	try {
310	<	q.put(new Integer(0));
311	<	q.put(new Integer(0));
312	<	threadAssertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
313	<	threadAssertTrue(q.offer(new Integer(0), LONG_DELAY_MS, TimeUnit.MILLISECONDS));
374	<	} finally { }
375	<	}
376	<	});
307	>	Thread t = newStartedThread(new CheckedRunnable() {
308	>	public void realRun() {
309	>	q.put(new Integer(0));
310	>	q.put(new Integer(0));
311	>	assertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, MILLISECONDS));
312	>	assertTrue(q.offer(new Integer(0), LONG_DELAY_MS, MILLISECONDS));
313	>	}});
314
315	<	try {
379	<	t.start();
380	<	Thread.sleep(SMALL_DELAY_MS);
381	<	t.interrupt();
382	<	t.join();
383	<	} catch (Exception e) {
384	<	unexpectedException();
385	<	}
315	>	awaitTermination(t);
316		}
317
318		/**
319		* take retrieves elements in priority order
320		*/
321	<	public void testTake() {
322	<	try {
323	<	PriorityBlockingQueue q = populatedQueue(SIZE);
324	<	for (int i = 0; i < SIZE; ++i) {
395	<	assertEquals(i, ((Integer)q.take()).intValue());
396	<	}
397	<	} catch (InterruptedException e) {
398	<	unexpectedException();
399	<	}
400	<	}
401	<
402	<	/**
403	<	* take blocks interruptibly when empty
404	<	*/
405	<	public void testTakeFromEmpty() {
406	<	final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
407	<	Thread t = new Thread(new Runnable() {
408	<	public void run() {
409	<	try {
410	<	q.take();
411	<	threadShouldThrow();
412	<	} catch (InterruptedException success) { }
413	<	}
414	<	});
415	<	try {
416	<	t.start();
417	<	Thread.sleep(SHORT_DELAY_MS);
418	<	t.interrupt();
419	<	t.join();
420	<	} catch (Exception e) {
421	<	unexpectedException();
321	>	public void testTake() throws InterruptedException {
322	>	PriorityBlockingQueue q = populatedQueue(SIZE);
323	>	for (int i = 0; i < SIZE; ++i) {
324	>	assertEquals(i, q.take());
325		}
326		}
327
328		/**
329		* Take removes existing elements until empty, then blocks interruptibly
330		*/
331	<	public void testBlockingTake() {
332	<	Thread t = new Thread(new Runnable() {
333	<	public void run() {
334	<	try {
335	<	PriorityBlockingQueue q = populatedQueue(SIZE);
336	<	for (int i = 0; i < SIZE; ++i) {
337	<	threadAssertEquals(i, ((Integer)q.take()).intValue());
338	<	}
339	<	q.take();
340	<	threadShouldThrow();
341	<	} catch (InterruptedException success) {
342	<	}
343	<	}});
344	<	t.start();
345	<	try {
443	<	Thread.sleep(SHORT_DELAY_MS);
444	<	t.interrupt();
445	<	t.join();
446	<	}
447	<	catch (InterruptedException ie) {
448	<	unexpectedException();
449	<	}
450	<	}
331	>	public void testBlockingTake() throws InterruptedException {
332	>	final PriorityBlockingQueue q = populatedQueue(SIZE);
333	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
334	>	Thread t = newStartedThread(new CheckedRunnable() {
335	>	public void realRun() throws InterruptedException {
336	>	for (int i = 0; i < SIZE; ++i) {
337	>	assertEquals(i, q.take());
338	>	}
339	>
340	>	Thread.currentThread().interrupt();
341	>	try {
342	>	q.take();
343	>	shouldThrow();
344	>	} catch (InterruptedException success) {}
345	>	assertFalse(Thread.interrupted());
346
347	+	pleaseInterrupt.countDown();
348	+	try {
349	+	q.take();
350	+	shouldThrow();
351	+	} catch (InterruptedException success) {}
352	+	assertFalse(Thread.interrupted());
353	+	}});
354	+
355	+	await(pleaseInterrupt);
356	+	assertThreadStaysAlive(t);
357	+	t.interrupt();
358	+	awaitTermination(t);
359	+	}
360
361		/**
362		* poll succeeds unless empty
#	Line 456 | Line 364 | public class PriorityBlockingQueueTest e
364		public void testPoll() {
365		PriorityBlockingQueue q = populatedQueue(SIZE);
366		for (int i = 0; i < SIZE; ++i) {
367	<	assertEquals(i, ((Integer)q.poll()).intValue());
367	>	assertEquals(i, q.poll());
368		}
369	<	assertNull(q.poll());
369	>	assertNull(q.poll());
370		}
371
372		/**
373	<	* timed pool with zero timeout succeeds when non-empty, else times out
373	>	* timed poll with zero timeout succeeds when non-empty, else times out
374		*/
375	<	public void testTimedPoll0() {
376	<	try {
377	<	PriorityBlockingQueue q = populatedQueue(SIZE);
378	<	for (int i = 0; i < SIZE; ++i) {
379	<	assertEquals(i, ((Integer)q.poll(0, TimeUnit.MILLISECONDS)).intValue());
380	<	}
473	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
474	<	} catch (InterruptedException e) {
475	<	unexpectedException();
476	<	}
375	>	public void testTimedPoll0() throws InterruptedException {
376	>	PriorityBlockingQueue q = populatedQueue(SIZE);
377	>	for (int i = 0; i < SIZE; ++i) {
378	>	assertEquals(i, q.poll(0, MILLISECONDS));
379	>	}
380	>	assertNull(q.poll(0, MILLISECONDS));
381		}
382
383		/**
384	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
384	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
385		*/
386	<	public void testTimedPoll() {
387	<	try {
388	<	PriorityBlockingQueue q = populatedQueue(SIZE);
389	<	for (int i = 0; i < SIZE; ++i) {
390	<	assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
391	<	}
392	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
393	<	} catch (InterruptedException e) {
394	<	unexpectedException();
395	<	}
386	>	public void testTimedPoll() throws InterruptedException {
387	>	PriorityBlockingQueue<Integer> q = populatedQueue(SIZE);
388	>	for (int i = 0; i < SIZE; ++i) {
389	>	long startTime = System.nanoTime();
390	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
391	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
392	>	}
393	>	long startTime = System.nanoTime();
394	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
395	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
396	>	checkEmpty(q);
397		}
398
399		/**
400		* Interrupted timed poll throws InterruptedException instead of
401		* returning timeout status
402		*/
403	<	public void testInterruptedTimedPoll() {
404	<	Thread t = new Thread(new Runnable() {
405	<	public void run() {
406	<	try {
407	<	PriorityBlockingQueue q = populatedQueue(SIZE);
408	<	for (int i = 0; i < SIZE; ++i) {
409	<	threadAssertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
410	<	}
506	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
507	<	} catch (InterruptedException success) {
508	<	}
509	<	}});
510	<	t.start();
511	<	try {
512	<	Thread.sleep(SHORT_DELAY_MS);
513	<	t.interrupt();
514	<	t.join();
515	<	}
516	<	catch (InterruptedException ie) {
517	<	unexpectedException();
518	<	}
519	<	}
520	<
521	<	/**
522	<	*  timed poll before a delayed offer fails; after offer succeeds;
523	<	*  on interruption throws
524	<	*/
525	<	public void testTimedPollWithOffer() {
526	<	final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
527	<	Thread t = new Thread(new Runnable() {
528	<	public void run() {
529	<	try {
530	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
531	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
532	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
533	<	threadShouldThrow();
534	<	} catch (InterruptedException success) { }
403	>	public void testInterruptedTimedPoll() throws InterruptedException {
404	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
405	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
406	>	Thread t = newStartedThread(new CheckedRunnable() {
407	>	public void realRun() throws InterruptedException {
408	>	long startTime = System.nanoTime();
409	>	for (int i = 0; i < SIZE; ++i) {
410	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
411		}
412	<	});
413	<	try {
414	<	t.start();
415	<	Thread.sleep(SMALL_DELAY_MS);
416	<	assertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
417	<	t.interrupt();
418	<	t.join();
419	<	} catch (Exception e) {
544	<	unexpectedException();
545	<	}
546	<	}
412	>	aboutToWait.countDown();
413	>	try {
414	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
415	>	shouldThrow();
416	>	} catch (InterruptedException success) {
417	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
418	>	}
419	>	}});
420
421	+	aboutToWait.await();
422	+	waitForThreadToEnterWaitState(t);
423	+	t.interrupt();
424	+	awaitTermination(t);
425	+	}
426
427		/**
428		* peek returns next element, or null if empty
#	Line 552 | Line 430 | public class PriorityBlockingQueueTest e
430		public void testPeek() {
431		PriorityBlockingQueue q = populatedQueue(SIZE);
432		for (int i = 0; i < SIZE; ++i) {
433	<	assertEquals(i, ((Integer)q.peek()).intValue());
434	<	q.poll();
433	>	assertEquals(i, q.peek());
434	>	assertEquals(i, q.poll());
435		assertTrue(q.peek() == null ||
436	<	i != ((Integer)q.peek()).intValue());
436	>	!q.peek().equals(i));
437		}
438	<	assertNull(q.peek());
438	>	assertNull(q.peek());
439		}
440
441		/**
#	Line 566 | Line 444 | public class PriorityBlockingQueueTest e
444		public void testElement() {
445		PriorityBlockingQueue q = populatedQueue(SIZE);
446		for (int i = 0; i < SIZE; ++i) {
447	<	assertEquals(i, ((Integer)q.element()).intValue());
448	<	q.poll();
447	>	assertEquals(i, q.element());
448	>	assertEquals(i, q.poll());
449		}
450		try {
451		q.element();
452		shouldThrow();
453	<	}
576	<	catch (NoSuchElementException success) {}
453	>	} catch (NoSuchElementException success) {}
454		}
455
456		/**
#	Line 582 | Line 459 | public class PriorityBlockingQueueTest e
459		public void testRemove() {
460		PriorityBlockingQueue q = populatedQueue(SIZE);
461		for (int i = 0; i < SIZE; ++i) {
462	<	assertEquals(i, ((Integer)q.remove()).intValue());
462	>	assertEquals(i, q.remove());
463		}
464		try {
465		q.remove();
466		shouldThrow();
467	<	} catch (NoSuchElementException success) {
591	<	}
592	<	}
593	<
594	<	/**
595	<	* remove(x) removes x and returns true if present
596	<	*/
597	<	public void testRemoveElement() {
598	<	PriorityBlockingQueue q = populatedQueue(SIZE);
599	<	for (int i = 1; i < SIZE; i+=2) {
600	<	assertTrue(q.remove(new Integer(i)));
601	<	}
602	<	for (int i = 0; i < SIZE; i+=2) {
603	<	assertTrue(q.remove(new Integer(i)));
604	<	assertFalse(q.remove(new Integer(i+1)));
605	<	}
606	<	assertTrue(q.isEmpty());
467	>	} catch (NoSuchElementException success) {}
468		}
469
470		/**
#	Line 661 | Line 522 | public class PriorityBlockingQueueTest e
522		assertTrue(changed);
523
524		assertTrue(q.containsAll(p));
525	<	assertEquals(SIZE-i, q.size());
525	>	assertEquals(SIZE - i, q.size());
526		p.remove();
527		}
528		}
#	Line 674 | Line 535 | public class PriorityBlockingQueueTest e
535		PriorityBlockingQueue q = populatedQueue(SIZE);
536		PriorityBlockingQueue p = populatedQueue(i);
537		assertTrue(q.removeAll(p));
538	<	assertEquals(SIZE-i, q.size());
538	>	assertEquals(SIZE - i, q.size());
539		for (int j = 0; j < i; ++j) {
540	<	Integer I = (Integer)(p.remove());
541	<	assertFalse(q.contains(I));
540	>	Integer x = (Integer)(p.remove());
541	>	assertFalse(q.contains(x));
542		}
543		}
544		}
545
546		/**
547	<	*  toArray contains all elements
547	>	* toArray contains all elements
548		*/
549	<	public void testToArray() {
549	>	public void testToArray() throws InterruptedException {
550		PriorityBlockingQueue q = populatedQueue(SIZE);
551	<	Object[] o = q.toArray();
551	>	Object[] o = q.toArray();
552		Arrays.sort(o);
553	<	try {
554	<	for (int i = 0; i < o.length; i++)
694	<	assertEquals(o[i], q.take());
695	<	} catch (InterruptedException e) {
696	<	unexpectedException();
697	<	}
553	>	for (int i = 0; i < o.length; i++)
554	>	assertSame(o[i], q.take());
555		}
556
557		/**
558		* toArray(a) contains all elements
559		*/
560	<	public void testToArray2() {
561	<	PriorityBlockingQueue q = populatedQueue(SIZE);
562	<	Integer[] ints = new Integer[SIZE];
563	<	ints = (Integer[])q.toArray(ints);
560	>	public void testToArray2() throws InterruptedException {
561	>	PriorityBlockingQueue<Integer> q = populatedQueue(SIZE);
562	>	Integer[] ints = new Integer[SIZE];
563	>	Integer[] array = q.toArray(ints);
564	>	assertSame(ints, array);
565		Arrays.sort(ints);
566	<	try {
567	<	for (int i = 0; i < ints.length; i++)
710	<	assertEquals(ints[i], q.take());
711	<	} catch (InterruptedException e) {
712	<	unexpectedException();
713	<	}
566	>	for (int i = 0; i < ints.length; i++)
567	>	assertSame(ints[i], q.take());
568		}
569
570		/**
571	<	* toArray(null) throws NPE
718	<	*/
719	<	public void testToArray_BadArg() {
720	<	try {
721	<	PriorityBlockingQueue q = populatedQueue(SIZE);
722	<	Object o[] = q.toArray(null);
723	<	shouldThrow();
724	<	} catch (NullPointerException success) {}
725	<	}
726	<
727	<	/**
728	<	* toArray with incompatible array type throws CCE
571	>	* toArray(incompatible array type) throws ArrayStoreException
572		*/
573		public void testToArray1_BadArg() {
574	<	try {
575	<	PriorityBlockingQueue q = populatedQueue(SIZE);
576	<	Object o[] = q.toArray(new String[10] );
577	<	shouldThrow();
578	<	} catch (ArrayStoreException  success) {}
574	>	PriorityBlockingQueue q = populatedQueue(SIZE);
575	>	try {
576	>	q.toArray(new String[10]);
577	>	shouldThrow();
578	>	} catch (ArrayStoreException success) {}
579		}
580
581		/**
#	Line 740 | Line 583 | public class PriorityBlockingQueueTest e
583		*/
584		public void testIterator() {
585		PriorityBlockingQueue q = populatedQueue(SIZE);
586	<	int i = 0;
587	<	Iterator it = q.iterator();
588	<	while (it.hasNext()) {
586	>	Iterator it = q.iterator();
587	>	int i;
588	>	for (i = 0; it.hasNext(); i++)
589		assertTrue(q.contains(it.next()));
747	–	++i;
748	–	}
590		assertEquals(i, SIZE);
591	+	assertIteratorExhausted(it);
592	+	}
593	+
594	+	/**
595	+	* iterator of empty collection has no elements
596	+	*/
597	+	public void testEmptyIterator() {
598	+	assertIteratorExhausted(new PriorityBlockingQueue().iterator());
599		}
600
601		/**
602		* iterator.remove removes current element
603		*/
604	<	public void testIteratorRemove () {
604	>	public void testIteratorRemove() {
605		final PriorityBlockingQueue q = new PriorityBlockingQueue(3);
606		q.add(new Integer(2));
607		q.add(new Integer(1));
#	Line 768 | Line 617 | public class PriorityBlockingQueueTest e
617		assertFalse(it.hasNext());
618		}
619
771	–
620		/**
621		* toString contains toStrings of elements
622		*/
#	Line 776 | Line 624 | public class PriorityBlockingQueueTest e
624		PriorityBlockingQueue q = populatedQueue(SIZE);
625		String s = q.toString();
626		for (int i = 0; i < SIZE; ++i) {
627	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
627	>	assertTrue(s.contains(String.valueOf(i)));
628		}
629		}
630
631		/**
632	<	* offer transfers elements across Executor tasks
632	>	* timed poll transfers elements across Executor tasks
633		*/
634		public void testPollInExecutor() {
635		final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
636	<	ExecutorService executor = Executors.newFixedThreadPool(2);
637	<	executor.execute(new Runnable() {
638	<	public void run() {
639	<	threadAssertNull(q.poll());
640	<	try {
641	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
642	<	threadAssertTrue(q.isEmpty());
643	<	}
644	<	catch (InterruptedException e) {
645	<	threadUnexpectedException();
798	<	}
799	<	}
800	<	});
801	<
802	<	executor.execute(new Runnable() {
803	<	public void run() {
804	<	try {
805	<	Thread.sleep(SMALL_DELAY_MS);
806	<	q.put(new Integer(1));
807	<	}
808	<	catch (InterruptedException e) {
809	<	threadUnexpectedException();
810	<	}
811	<	}
812	<	});
813	<
814	<	joinPool(executor);
815	<	}
816	<
817	<	/**
818	<	* A deserialized serialized queue has same elements
819	<	*/
820	<	public void testSerialization() {
821	<	PriorityBlockingQueue q = populatedQueue(SIZE);
822	<	try {
823	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
824	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
825	<	out.writeObject(q);
826	<	out.close();
827	<
828	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
829	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
830	<	PriorityBlockingQueue r = (PriorityBlockingQueue)in.readObject();
831	<	assertEquals(q.size(), r.size());
832	<	while (!q.isEmpty())
833	<	assertEquals(q.remove(), r.remove());
834	<	} catch (Exception e) {
835	<	unexpectedException();
836	<	}
837	<	}
636	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
637	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
638	>	try (PoolCleaner cleaner = cleaner(executor)) {
639	>	executor.execute(new CheckedRunnable() {
640	>	public void realRun() throws InterruptedException {
641	>	assertNull(q.poll());
642	>	threadsStarted.await();
643	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
644	>	checkEmpty(q);
645	>	}});
646
647	<	/**
648	<	* drainTo(null) throws NPE
649	<	*/
650	<	public void testDrainToNull() {
651	<	PriorityBlockingQueue q = populatedQueue(SIZE);
844	<	try {
845	<	q.drainTo(null);
846	<	shouldThrow();
847	<	} catch (NullPointerException success) {
647	>	executor.execute(new CheckedRunnable() {
648	>	public void realRun() throws InterruptedException {
649	>	threadsStarted.await();
650	>	q.put(one);
651	>	}});
652		}
653		}
654
655		/**
656	<	* drainTo(this) throws IAE
656	>	* A deserialized serialized queue has same elements
657		*/
658	<	public void testDrainToSelf() {
659	<	PriorityBlockingQueue q = populatedQueue(SIZE);
660	<	try {
661	<	q.drainTo(q);
662	<	shouldThrow();
663	<	} catch (IllegalArgumentException success) {
658	>	public void testSerialization() throws Exception {
659	>	Queue x = populatedQueue(SIZE);
660	>	Queue y = serialClone(x);
661	>
662	>	assertNotSame(x, y);
663	>	assertEquals(x.size(), y.size());
664	>	while (!x.isEmpty()) {
665	>	assertFalse(y.isEmpty());
666	>	assertEquals(x.remove(), y.remove());
667		}
668	+	assertTrue(y.isEmpty());
669		}
670
671		/**
#	Line 867 | Line 675 | public class PriorityBlockingQueueTest e
675		PriorityBlockingQueue q = populatedQueue(SIZE);
676		ArrayList l = new ArrayList();
677		q.drainTo(l);
678	<	assertEquals(q.size(), 0);
679	<	assertEquals(l.size(), SIZE);
678	>	assertEquals(0, q.size());
679	>	assertEquals(SIZE, l.size());
680		for (int i = 0; i < SIZE; ++i)
681		assertEquals(l.get(i), new Integer(i));
682		q.add(zero);
#	Line 878 | Line 686 | public class PriorityBlockingQueueTest e
686		assertTrue(q.contains(one));
687		l.clear();
688		q.drainTo(l);
689	<	assertEquals(q.size(), 0);
690	<	assertEquals(l.size(), 2);
689	>	assertEquals(0, q.size());
690	>	assertEquals(2, l.size());
691		for (int i = 0; i < 2; ++i)
692		assertEquals(l.get(i), new Integer(i));
693		}
#	Line 887 | Line 695 | public class PriorityBlockingQueueTest e
695		/**
696		* drainTo empties queue
697		*/
698	<	public void testDrainToWithActivePut() {
698	>	public void testDrainToWithActivePut() throws InterruptedException {
699		final PriorityBlockingQueue q = populatedQueue(SIZE);
700	<	Thread t = new Thread(new Runnable() {
701	<	public void run() {
702	<	q.put(new Integer(SIZE+1));
703	<	}
896	<	});
897	<	try {
898	<	t.start();
899	<	ArrayList l = new ArrayList();
900	<	q.drainTo(l);
901	<	assertTrue(l.size() >= SIZE);
902	<	for (int i = 0; i < SIZE; ++i)
903	<	assertEquals(l.get(i), new Integer(i));
904	<	t.join();
905	<	assertTrue(q.size() + l.size() >= SIZE);
906	<	} catch (Exception e) {
907	<	unexpectedException();
908	<	}
909	<	}
700	>	Thread t = new Thread(new CheckedRunnable() {
701	>	public void realRun() {
702	>	q.put(new Integer(SIZE + 1));
703	>	}});
704
705	<	/**
706	<	* drainTo(null, n) throws NPE
707	<	*/
708	<	public void testDrainToNullN() {
709	<	PriorityBlockingQueue q = populatedQueue(SIZE);
710	<	try {
711	<	q.drainTo(null, 0);
712	<	shouldThrow();
919	<	} catch (NullPointerException success) {
920	<	}
921	<	}
922	<
923	<	/**
924	<	* drainTo(this, n) throws IAE
925	<	*/
926	<	public void testDrainToSelfN() {
927	<	PriorityBlockingQueue q = populatedQueue(SIZE);
928	<	try {
929	<	q.drainTo(q, 0);
930	<	shouldThrow();
931	<	} catch (IllegalArgumentException success) {
932	<	}
705	>	t.start();
706	>	ArrayList l = new ArrayList();
707	>	q.drainTo(l);
708	>	assertTrue(l.size() >= SIZE);
709	>	for (int i = 0; i < SIZE; ++i)
710	>	assertEquals(l.get(i), new Integer(i));
711	>	t.join();
712	>	assertTrue(q.size() + l.size() >= SIZE);
713		}
714
715		/**
716	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
716	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
717		*/
718		public void testDrainToN() {
719	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE*2);
719	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE * 2);
720		for (int i = 0; i < SIZE + 2; ++i) {
721		for (int j = 0; j < SIZE; j++)
722		assertTrue(q.offer(new Integer(j)));
723		ArrayList l = new ArrayList();
724		q.drainTo(l, i);
725	<	int k = (i < SIZE)? i : SIZE;
726	<	assertEquals(l.size(), k);
727	<	assertEquals(q.size(), SIZE-k);
725	>	int k = (i < SIZE) ? i : SIZE;
726	>	assertEquals(k, l.size());
727	>	assertEquals(SIZE - k, q.size());
728		for (int j = 0; j < k; ++j)
729		assertEquals(l.get(j), new Integer(j));
730	<	while (q.poll() != null) ;
730	>	do {} while (q.poll() != null);
731		}
732		}
733
734	+	/**
735	+	* remove(null), contains(null) always return false
736	+	*/
737	+	public void testNeverContainsNull() {
738	+	Collection<?>[] qs = {
739	+	new PriorityBlockingQueue<Object>(),
740	+	populatedQueue(2),
741	+	};
742	+
743	+	for (Collection<?> q : qs) {
744	+	assertFalse(q.contains(null));
745	+	assertFalse(q.remove(null));
746	+	}
747	+	}
748
749		}

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