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

Comparing jsr166/src/test/tck/PriorityBlockingQueueTest.java (file contents):
Revision 1.5 by dl, Sat Sep 20 18:20:08 2003 UTC vs.
Revision 1.71 by jsr166, Sat Mar 11 18:20:47 2017 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	>	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 {
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
35	–
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	<
83	>
84		/**
85	<	*
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	<	*
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	<	}
68	<	catch (IllegalArgumentException success) {}
99	>	} catch (IllegalArgumentException success) {}
100		}
101
102		/**
103	<	*
103	>	* Initializing from null Collection throws NPE
104		*/
105		public void testConstructor3() {
75	–
106		try {
107	<	PriorityBlockingQueue q = new PriorityBlockingQueue(null);
107	>	new PriorityBlockingQueue(null);
108		shouldThrow();
109	<	}
80	<	catch (NullPointerException success) {}
109	>	} catch (NullPointerException success) {}
110		}
111
112		/**
113	<	*
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];
89	<	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
118	>	new PriorityBlockingQueue(elements);
119		shouldThrow();
120	<	}
92	<	catch (NullPointerException success) {}
120	>	} catch (NullPointerException success) {}
121		}
122
123		/**
124	<	*
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];
101	<	for (int i = 0; i < SIZE-1; ++i)
102	<	ints[i] = new Integer(i);
103	<	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
132	>	new PriorityBlockingQueue(elements);
133		shouldThrow();
134	<	}
106	<	catch (NullPointerException success) {}
134	>	} catch (NullPointerException success) {}
135		}
136
137		/**
138	<	*
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)
119	<	assertEquals(ints[i], q.poll());
120	<	}
121	<	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	<	*
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)
137	<	assertEquals(ints[i], q.poll());
138	<	}
139	<	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		/**
165	<	*
165	>	* isEmpty is true before add, false after
166		*/
167		public void testEmpty() {
168		PriorityBlockingQueue q = new PriorityBlockingQueue(2);
169		assertTrue(q.isEmpty());
170	<	assertEquals(NOCAP, q.remainingCapacity());
171	<	q.add(new Integer(1));
170	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
171	>	q.add(one);
172		assertFalse(q.isEmpty());
173	<	q.add(new Integer(2));
173	>	q.add(two);
174		q.remove();
175		q.remove();
176		assertTrue(q.isEmpty());
177		}
178
179		/**
180	<	*
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		/**
197	<	*
176	<	*/
177	<	public void testOfferNull() {
178	<	try {
179	<	PriorityBlockingQueue q = new PriorityBlockingQueue(1);
180	<	q.offer(null);
181	<	shouldThrow();
182	<	} catch (NullPointerException success) { }
183	<	}
184	<
185	<	/**
186	<	*
197	>	* Offer of comparable element succeeds
198		*/
199		public void testOffer() {
200		PriorityBlockingQueue q = new PriorityBlockingQueue(1);
201	<	assertTrue(q.offer(new Integer(0)));
202	<	assertTrue(q.offer(new Integer(1)));
201	>	assertTrue(q.offer(zero));
202	>	assertTrue(q.offer(one));
203		}
204
205		/**
206	<	*
206	>	* Offer of non-Comparable throws CCE
207		*/
208		public void testOfferNonComparable() {
209	+	PriorityBlockingQueue q = new PriorityBlockingQueue(1);
210		try {
199	–	PriorityBlockingQueue q = new PriorityBlockingQueue(1);
200	–	q.offer(new Object());
201	–	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		}
205	–	catch(ClassCastException success) {}
218		}
219
220		/**
221	<	*
221	>	* add of comparable succeeds
222		*/
223		public void testAdd() {
224		PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
#	Line 217 | Line 229 | public class PriorityBlockingQueueTest e
229		}
230
231		/**
232	<	*
221	<	*/
222	<	public void testAddAll1() {
223	<	try {
224	<	PriorityBlockingQueue q = new PriorityBlockingQueue(1);
225	<	q.addAll(null);
226	<	shouldThrow();
227	<	}
228	<	catch (NullPointerException success) {}
229	<	}
230	<	/**
231	<	*
232	>	* addAll(this) throws IAE
233		*/
234	<	public void testAddAll2() {
234	>	public void testAddAllSelf() {
235	>	PriorityBlockingQueue q = populatedQueue(SIZE);
236		try {
237	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
236	<	Integer[] ints = new Integer[SIZE];
237	<	q.addAll(Arrays.asList(ints));
237	>	q.addAll(q);
238		shouldThrow();
239	<	}
240	<	catch (NullPointerException success) {}
239	>	} catch (IllegalArgumentException success) {}
240		}
241	+
242		/**
243	<	*
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 {
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);
252		q.addAll(Arrays.asList(ints));
253		shouldThrow();
254	<	}
254	<	catch (NullPointerException success) {}
254	>	} catch (NullPointerException success) {}
255		}
256
257		/**
258	<	*
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)
270	<	assertEquals(ints[i], q.poll());
271	<	}
272	<	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		/**
273	<	*
277	<	*/
278	<	public void testPutNull() {
279	<	try {
280	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
281	<	q.put(null);
282	<	shouldThrow();
283	<	}
284	<	catch (NullPointerException success){
285	<	}
286	<	}
287	<
288	<	/**
289	<	*
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);
297	<	assertTrue(q.contains(I));
298	<	}
299	<	assertEquals(SIZE, q.size());
300	<	}
301	<	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	<	*
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;
320	<	q.put(new Integer(0));
321	<	++added;
322	<	threadAssertTrue(added == 4);
323	<	} finally {
324	<	}
325	<	}
326	<	});
327	<	try {
328	<	t.start();
329	<	Thread.sleep(SHORT_DELAY_MS);
330	<	q.take();
331	<	t.interrupt();
332	<	t.join();
333	<	} catch (Exception e){
334	<	unexpectedException();
335	<	}
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	<	*
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));
314	<	} finally { }
315	<	}
352	<	});
353	<
354	<	try {
355	<	t.start();
356	<	Thread.sleep(SMALL_DELAY_MS);
357	<	t.interrupt();
358	<	t.join();
359	<	} catch (Exception e){
360	<	unexpectedException();
361	<	}
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	>	awaitTermination(t);
316		}
317
318		/**
319	<	*
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) {
325	<	assertEquals(i, ((Integer)q.take()).intValue());
372	<	}
373	<	} catch (InterruptedException e){
374	<	unexpectedException();
375	<	}
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	<	*
329	>	* Take removes existing elements until empty, then blocks interruptibly
330		*/
331	<	public void testTakeFromEmpty() {
332	<	final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
333	<	Thread t = new Thread(new Runnable() {
334	<	public void run() {
335	<	try {
336	<	q.take();
337	<	threadShouldThrow();
388	<	} catch (InterruptedException success){ }
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		}
390	–	});
391	–	try {
392	–	t.start();
393	–	Thread.sleep(SHORT_DELAY_MS);
394	–	t.interrupt();
395	–	t.join();
396	–	} catch (Exception e){
397	–	unexpectedException();
398	–	}
399	–	}
339
340	<	/**
341	<	*
342	<	*/
343	<	public void testBlockingTake() {
344	<	Thread t = new Thread(new Runnable() {
345	<	public void run() {
407	<	try {
408	<	PriorityBlockingQueue q = populatedQueue(SIZE);
409	<	for (int i = 0; i < SIZE; ++i) {
410	<	threadAssertEquals(i, ((Integer)q.take()).intValue());
411	<	}
412	<	q.take();
413	<	threadShouldThrow();
414	<	} catch (InterruptedException success){
415	<	}
416	<	}});
417	<	t.start();
418	<	try {
419	<	Thread.sleep(SHORT_DELAY_MS);
420	<	t.interrupt();
421	<	t.join();
422	<	}
423	<	catch (InterruptedException ie) {
424	<	unexpectedException();
425	<	}
426	<	}
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	<	*
362	>	* poll succeeds unless empty
363		*/
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	<	*
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	<	}
449	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
450	<	} catch (InterruptedException e){
451	<	unexpectedException();
452	<	}
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	<	*
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	<	}
464	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
465	<	} catch (InterruptedException e){
466	<	unexpectedException();
467	<	}
468	<	}
469	<
470	<	/**
471	<	*
472	<	*/
473	<	public void testInterruptedTimedPoll() {
474	<	Thread t = new Thread(new Runnable() {
475	<	public void run() {
476	<	try {
477	<	PriorityBlockingQueue q = populatedQueue(SIZE);
478	<	for (int i = 0; i < SIZE; ++i) {
479	<	threadAssertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
480	<	}
481	<	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();
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	<	*
400	>	* Interrupted timed poll throws InterruptedException instead of
401	>	* returning timeout status
402		*/
403	<	public void testTimedPollWithOffer() {
404	<	final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
405	<	Thread t = new Thread(new Runnable() {
406	<	public void run() {
407	<	try {
408	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
409	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
410	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
507	<	threadShouldThrow();
508	<	} 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){
518	<	unexpectedException();
519	<	}
520	<	}
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	<	*
428	>	* peek returns next element, or null if empty
429		*/
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		/**
442	<	*
442	>	* element returns next element, or throws NSEE if empty
443		*/
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	<	}
550	<	catch (NoSuchElementException success) {}
453	>	} catch (NoSuchElementException success) {}
454		}
455
456		/**
457	<	*
457	>	* remove removes next element, or throws NSEE if empty
458		*/
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){
565	<	}
467	>	} catch (NoSuchElementException success) {}
468		}
469
470		/**
471	<	*
570	<	*/
571	<	public void testRemoveElement() {
572	<	PriorityBlockingQueue q = populatedQueue(SIZE);
573	<	for (int i = 1; i < SIZE; i+=2) {
574	<	assertTrue(q.remove(new Integer(i)));
575	<	}
576	<	for (int i = 0; i < SIZE; i+=2) {
577	<	assertTrue(q.remove(new Integer(i)));
578	<	assertFalse(q.remove(new Integer(i+1)));
579	<	}
580	<	assertTrue(q.isEmpty());
581	<	}
582	<
583	<	/**
584	<	*
471	>	* contains(x) reports true when elements added but not yet removed
472		*/
473		public void testContains() {
474		PriorityBlockingQueue q = populatedQueue(SIZE);
#	Line 593 | Line 480 | public class PriorityBlockingQueueTest e
480		}
481
482		/**
483	<	*
483	>	* clear removes all elements
484		*/
485		public void testClear() {
486		PriorityBlockingQueue q = populatedQueue(SIZE);
487		q.clear();
488		assertTrue(q.isEmpty());
489		assertEquals(0, q.size());
490	<	assertEquals(NOCAP, q.remainingCapacity());
604	<	q.add(new Integer(1));
490	>	q.add(one);
491		assertFalse(q.isEmpty());
492	+	assertTrue(q.contains(one));
493		q.clear();
494		assertTrue(q.isEmpty());
495		}
496
497		/**
498	<	*
498	>	* containsAll(c) is true when c contains a subset of elements
499		*/
500		public void testContainsAll() {
501		PriorityBlockingQueue q = populatedQueue(SIZE);
#	Line 622 | Line 509 | public class PriorityBlockingQueueTest e
509		}
510
511		/**
512	<	*
512	>	* retainAll(c) retains only those elements of c and reports true if changed
513		*/
514		public void testRetainAll() {
515		PriorityBlockingQueue q = populatedQueue(SIZE);
#	Line 635 | 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		}
529
530		/**
531	<	*
531	>	* removeAll(c) removes only those elements of c and reports true if changed
532		*/
533		public void testRemoveAll() {
534		for (int i = 1; i < SIZE; ++i) {
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	<	*
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++)
668	<	assertEquals(o[i], q.take());
669	<	} catch (InterruptedException e){
670	<	unexpectedException();
671	<	}
553	>	for (int i = 0; i < o.length; i++)
554	>	assertSame(o[i], q.take());
555		}
556
557		/**
558	<	*
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++)
568	<	assertEquals(ints[i], q.take());
569	<	} catch (InterruptedException e){
570	<	unexpectedException();
571	<	}
566	>	for (int i = 0; i < ints.length; i++)
567	>	assertSame(ints[i], q.take());
568	>	}
569	>
570	>	/**
571	>	* toArray(incompatible array type) throws ArrayStoreException
572	>	*/
573	>	public void testToArray1_BadArg() {
574	>	PriorityBlockingQueue q = populatedQueue(SIZE);
575	>	try {
576	>	q.toArray(new String[10]);
577	>	shouldThrow();
578	>	} catch (ArrayStoreException success) {}
579		}
580	<
580	>
581		/**
582	<	*
582	>	* iterator iterates through all elements
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()));
699	–	++i;
700	–	}
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	<	*
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 720 | Line 617 | public class PriorityBlockingQueueTest e
617		assertFalse(it.hasNext());
618		}
619
723	–
620		/**
621	<	*
621	>	* toString contains toStrings of elements
622		*/
623		public void testToString() {
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	<	}
629	>	}
630
631		/**
632	<	*
632	>	* timed poll transfers elements across Executor tasks
633		*/
634		public void testPollInExecutor() {
739	–
635		final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
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	<	ExecutorService executor = Executors.newFixedThreadPool(2);
648	<
649	<	executor.execute(new Runnable() {
650	<	public void run() {
651	<	threadAssertNull(q.poll());
652	<	try {
653	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
749	<	threadAssertTrue(q.isEmpty());
750	<	}
751	<	catch (InterruptedException e) {
752	<	threadUnexpectedException();
753	<	}
754	<	}
755	<	});
647	>	executor.execute(new CheckedRunnable() {
648	>	public void realRun() throws InterruptedException {
649	>	threadsStarted.await();
650	>	q.put(one);
651	>	}});
652	>	}
653	>	}
654
655	<	executor.execute(new Runnable() {
656	<	public void run() {
657	<	try {
658	<	Thread.sleep(SMALL_DELAY_MS);
659	<	q.put(new Integer(1));
660	<	}
763	<	catch (InterruptedException e) {
764	<	threadUnexpectedException();
765	<	}
766	<	}
767	<	});
768	<
769	<	joinPool(executor);
655	>	/**
656	>	* A deserialized serialized queue has same elements
657	>	*/
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		/**
672	<	*
672	>	* drainTo(c) empties queue into another collection c
673		*/
674	<	public void testSerialization() {
674	>	public void testDrainTo() {
675		PriorityBlockingQueue q = populatedQueue(SIZE);
676	<	try {
677	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
678	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
679	<	out.writeObject(q);
680	<	out.close();
681	<
682	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
683	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
684	<	PriorityBlockingQueue r = (PriorityBlockingQueue)in.readObject();
685	<	assertEquals(q.size(), r.size());
686	<	while (!q.isEmpty())
687	<	assertEquals(q.remove(), r.remove());
688	<	} catch(Exception e){
689	<	unexpectedException();
676	>	ArrayList l = new ArrayList();
677	>	q.drainTo(l);
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);
683	>	q.add(one);
684	>	assertFalse(q.isEmpty());
685	>	assertTrue(q.contains(zero));
686	>	assertTrue(q.contains(one));
687	>	l.clear();
688	>	q.drainTo(l);
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	>	}
694	>
695	>	/**
696	>	* drainTo empties queue
697	>	*/
698	>	public void testDrainToWithActivePut() throws InterruptedException {
699	>	final PriorityBlockingQueue q = populatedQueue(SIZE);
700	>	Thread t = new Thread(new CheckedRunnable() {
701	>	public void realRun() {
702	>	q.put(new Integer(SIZE + 1));
703	>	}});
704	>
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 min(n, size) elements of queue into c
717	>	*/
718	>	public void testDrainToN() {
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(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	>	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

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