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Comparing jsr166/src/test/tck/PriorityBlockingQueueTest.java (file contents):
Revision 1.8 by dl, Sat Dec 27 19:26:43 2003 UTC vs.
Revision 1.82 by jsr166, Sun Aug 11 22:29:27 2019 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
5	<	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	<	* Pat Fisher, Mike Judd.
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9	<	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	>	import java.util.concurrent.ThreadLocalRandom;
24	>
25	>	import junit.framework.Test;
26
27		public class PriorityBlockingQueueTest extends JSR166TestCase {
28	+
29	+	public static class Generic extends BlockingQueueTest {
30	+	protected BlockingQueue emptyCollection() {
31	+	return new PriorityBlockingQueue();
32	+	}
33	+	}
34	+
35	+	public static class InitialCapacity extends BlockingQueueTest {
36	+	protected BlockingQueue emptyCollection() {
37	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
38	+	int initialCapacity = rnd.nextInt(1, SIZE);
39	+	return new PriorityBlockingQueue(initialCapacity);
40	+	}
41	+	}
42	+
43		public static void main(String[] args) {
44	<	junit.textui.TestRunner.run (suite());
44	>	main(suite(), args);
45		}
46	+
47		public static Test suite() {
48	<	return new TestSuite(PriorityBlockingQueueTest.class);
48	>	class Implementation implements CollectionImplementation {
49	>	public Class<?> klazz() { return PriorityBlockingQueue.class; }
50	>	public Collection emptyCollection() {
51	>	return new PriorityBlockingQueue();
52	>	}
53	>	public Object makeElement(int i) { return i; }
54	>	public boolean isConcurrent() { return true; }
55	>	public boolean permitsNulls() { return false; }
56	>	}
57	>	class ComparatorImplementation implements CollectionImplementation {
58	>	public Class<?> klazz() { return PriorityBlockingQueue.class; }
59	>	public Collection emptyCollection() {
60	>	ThreadLocalRandom rnd = ThreadLocalRandom.current();
61	>	int initialCapacity = rnd.nextInt(1, 10);
62	>	return new PriorityBlockingQueue(
63	>	initialCapacity, new MyReverseComparator());
64	>	}
65	>	public Object makeElement(int i) { return i; }
66	>	public boolean isConcurrent() { return true; }
67	>	public boolean permitsNulls() { return false; }
68	>	}
69	>	return newTestSuite(
70	>	PriorityBlockingQueueTest.class,
71	>	new Generic().testSuite(),
72	>	new InitialCapacity().testSuite(),
73	>	CollectionTest.testSuite(new Implementation()),
74	>	CollectionTest.testSuite(new ComparatorImplementation()));
75		}
76
22	–	private static final int NOCAP = Integer.MAX_VALUE;
23	–
77		/** Sample Comparator */
78	<	static class MyReverseComparator implements Comparator {
78	>	static class MyReverseComparator implements Comparator, java.io.Serializable {
79		public int compare(Object x, Object y) {
80	<	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;
80	>	return ((Comparable)y).compareTo(x);
81		}
82		}
83
84		/**
85	<	* Create a queue of given size containing consecutive
86	<	* Integers 0 ... n.
85	>	* Returns a new queue of given size containing consecutive
86	>	* Integers 0 ... n - 1.
87		*/
88	<	private PriorityBlockingQueue populatedQueue(int n) {
89	<	PriorityBlockingQueue q = new PriorityBlockingQueue(n);
88	>	private static PriorityBlockingQueue<Integer> populatedQueue(int n) {
89	>	PriorityBlockingQueue<Integer> q =
90	>	new PriorityBlockingQueue<Integer>(n);
91		assertTrue(q.isEmpty());
92	<	for(int i = n-1; i >= 0; i-=2)
93	<	assertTrue(q.offer(new Integer(i)));
94	<	for(int i = (n & 1); i < n; i+=2)
95	<	assertTrue(q.offer(new Integer(i)));
92	>	for (int i = n - 1; i >= 0; i -= 2)
93	>	assertTrue(q.offer(new Integer(i)));
94	>	for (int i = (n & 1); i < n; i += 2)
95	>	assertTrue(q.offer(new Integer(i)));
96		assertFalse(q.isEmpty());
97	<	assertEquals(NOCAP, q.remainingCapacity());
98	<	assertEquals(n, q.size());
97	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
98	>	assertEquals(n, q.size());
99	>	assertEquals((Integer) 0, q.peek());
100		return q;
101		}
102	<
102	>
103		/**
104		* A new queue has unbounded capacity
105		*/
106		public void testConstructor1() {
107	<	assertEquals(NOCAP, new PriorityBlockingQueue(SIZE).remainingCapacity());
107	>	assertEquals(Integer.MAX_VALUE,
108	>	new PriorityBlockingQueue(SIZE).remainingCapacity());
109		}
110
111		/**
112	<	* Constructor throws IAE if  capacity argument nonpositive
112	>	* Constructor throws IllegalArgumentException if capacity argument nonpositive
113		*/
114		public void testConstructor2() {
115		try {
116	<	PriorityBlockingQueue q = new PriorityBlockingQueue(0);
116	>	new PriorityBlockingQueue(0);
117		shouldThrow();
118	<	}
67	<	catch (IllegalArgumentException success) {}
118	>	} catch (IllegalArgumentException success) {}
119		}
120
121		/**
#	Line 72 | Line 123 | public class PriorityBlockingQueueTest e
123		*/
124		public void testConstructor3() {
125		try {
126	<	PriorityBlockingQueue q = new PriorityBlockingQueue(null);
126	>	new PriorityBlockingQueue(null);
127		shouldThrow();
128	<	}
78	<	catch (NullPointerException success) {}
128	>	} catch (NullPointerException success) {}
129		}
130
131		/**
132		* Initializing from Collection of null elements throws NPE
133		*/
134		public void testConstructor4() {
135	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
136		try {
137	<	Integer[] ints = new Integer[SIZE];
87	<	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
137	>	new PriorityBlockingQueue(elements);
138		shouldThrow();
139	<	}
90	<	catch (NullPointerException success) {}
139	>	} catch (NullPointerException success) {}
140		}
141
142		/**
143		* Initializing from Collection with some null elements throws NPE
144		*/
145		public void testConstructor5() {
146	+	Integer[] ints = new Integer[SIZE];
147	+	for (int i = 0; i < SIZE - 1; ++i)
148	+	ints[i] = i;
149	+	Collection<Integer> elements = Arrays.asList(ints);
150		try {
151	<	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));
151	>	new PriorityBlockingQueue(elements);
152		shouldThrow();
153	<	}
104	<	catch (NullPointerException success) {}
153	>	} catch (NullPointerException success) {}
154		}
155
156		/**
157		* Queue contains all elements of collection used to initialize
158		*/
159		public void testConstructor6() {
160	<	try {
161	<	Integer[] ints = new Integer[SIZE];
162	<	for (int i = 0; i < SIZE; ++i)
163	<	ints[i] = new Integer(i);
164	<	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
165	<	for (int i = 0; i < SIZE; ++i)
117	<	assertEquals(ints[i], q.poll());
118	<	}
119	<	finally {}
160	>	Integer[] ints = new Integer[SIZE];
161	>	for (int i = 0; i < SIZE; ++i)
162	>	ints[i] = i;
163	>	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
164	>	for (int i = 0; i < SIZE; ++i)
165	>	assertEquals(ints[i], q.poll());
166		}
167
168		/**
169		* The comparator used in constructor is used
170		*/
171		public void testConstructor7() {
172	<	try {
173	<	MyReverseComparator cmp = new MyReverseComparator();
174	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE, cmp);
175	<	assertEquals(cmp, q.comparator());
176	<	Integer[] ints = new Integer[SIZE];
177	<	for (int i = 0; i < SIZE; ++i)
178	<	ints[i] = new Integer(i);
179	<	q.addAll(Arrays.asList(ints));
180	<	for (int i = SIZE-1; i >= 0; --i)
135	<	assertEquals(ints[i], q.poll());
136	<	}
137	<	finally {}
172	>	MyReverseComparator cmp = new MyReverseComparator();
173	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE, cmp);
174	>	assertEquals(cmp, q.comparator());
175	>	Integer[] ints = new Integer[SIZE];
176	>	for (int i = 0; i < SIZE; ++i)
177	>	ints[i] = new Integer(i);
178	>	q.addAll(Arrays.asList(ints));
179	>	for (int i = SIZE - 1; i >= 0; --i)
180	>	assertEquals(ints[i], q.poll());
181		}
182
183		/**
#	Line 143 | Line 186 | public class PriorityBlockingQueueTest e
186		public void testEmpty() {
187		PriorityBlockingQueue q = new PriorityBlockingQueue(2);
188		assertTrue(q.isEmpty());
189	<	assertEquals(NOCAP, q.remainingCapacity());
189	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
190		q.add(one);
191		assertFalse(q.isEmpty());
192		q.add(two);
#	Line 153 | Line 196 | public class PriorityBlockingQueueTest e
196		}
197
198		/**
199	<	* remainingCapacity does not change when elementa added or removed,
157	<	* but size does
199	>	* remainingCapacity() always returns Integer.MAX_VALUE
200		*/
201		public void testRemainingCapacity() {
202	<	PriorityBlockingQueue q = populatedQueue(SIZE);
202	>	BlockingQueue q = populatedQueue(SIZE);
203		for (int i = 0; i < SIZE; ++i) {
204	<	assertEquals(NOCAP, q.remainingCapacity());
205	<	assertEquals(SIZE-i, q.size());
206	<	q.remove();
204	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
205	>	assertEquals(SIZE - i, q.size());
206	>	assertEquals(i, q.remove());
207		}
208		for (int i = 0; i < SIZE; ++i) {
209	<	assertEquals(NOCAP, q.remainingCapacity());
209	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
210		assertEquals(i, q.size());
211	<	q.add(new Integer(i));
211	>	assertTrue(q.add(i));
212		}
213		}
214
215		/**
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	–	/**
216		* Offer of comparable element succeeds
217		*/
218		public void testOffer() {
#	Line 205 | Line 225 | public class PriorityBlockingQueueTest e
225		* Offer of non-Comparable throws CCE
226		*/
227		public void testOfferNonComparable() {
228	+	PriorityBlockingQueue q = new PriorityBlockingQueue(1);
229		try {
209	–	PriorityBlockingQueue q = new PriorityBlockingQueue(1);
210	–	q.offer(new Object());
211	–	q.offer(new Object());
230		q.offer(new Object());
231		shouldThrow();
232	+	} catch (ClassCastException success) {
233	+	assertTrue(q.isEmpty());
234	+	assertEquals(0, q.size());
235	+	assertNull(q.poll());
236		}
215	–	catch(ClassCastException success) {}
237		}
238
239		/**
#	Line 227 | Line 248 | public class PriorityBlockingQueueTest e
248		}
249
250		/**
251	<	* 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	<	/**
242	<	* addAll(this) throws IAE
251	>	* addAll(this) throws IllegalArgumentException
252		*/
253		public void testAddAllSelf() {
254	+	PriorityBlockingQueue q = populatedQueue(SIZE);
255		try {
246	–	PriorityBlockingQueue q = populatedQueue(SIZE);
256		q.addAll(q);
257		shouldThrow();
258	<	}
250	<	catch (IllegalArgumentException success) {}
258	>	} catch (IllegalArgumentException success) {}
259		}
260
261		/**
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	–	/**
262		* addAll of a collection with any null elements throws NPE after
263		* possibly adding some elements
264		*/
265		public void testAddAll3() {
266	+	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
267	+	Integer[] ints = new Integer[SIZE];
268	+	for (int i = 0; i < SIZE - 1; ++i)
269	+	ints[i] = new Integer(i);
270		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);
271		q.addAll(Arrays.asList(ints));
272		shouldThrow();
273	<	}
278	<	catch (NullPointerException success) {}
273	>	} catch (NullPointerException success) {}
274		}
275
276		/**
277		* Queue contains all elements of successful addAll
278		*/
279		public void testAddAll5() {
280	<	try {
281	<	Integer[] empty = new Integer[0];
282	<	Integer[] ints = new Integer[SIZE];
283	<	for (int i = SIZE-1; i >= 0; --i)
284	<	ints[i] = new Integer(i);
285	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
286	<	assertFalse(q.addAll(Arrays.asList(empty)));
287	<	assertTrue(q.addAll(Arrays.asList(ints)));
288	<	for (int i = 0; i < SIZE; ++i)
294	<	assertEquals(ints[i], q.poll());
295	<	}
296	<	finally {}
280	>	Integer[] empty = new Integer[0];
281	>	Integer[] ints = new Integer[SIZE];
282	>	for (int i = SIZE - 1; i >= 0; --i)
283	>	ints[i] = new Integer(i);
284	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
285	>	assertFalse(q.addAll(Arrays.asList(empty)));
286	>	assertTrue(q.addAll(Arrays.asList(ints)));
287	>	for (int i = 0; i < SIZE; ++i)
288	>	assertEquals(ints[i], q.poll());
289		}
290
291		/**
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	–	/**
292		* all elements successfully put are contained
293		*/
294	<	public void testPut() {
295	<	try {
296	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
297	<	for (int i = 0; i < SIZE; ++i) {
298	<	Integer I = new Integer(i);
299	<	q.put(I);
321	<	assertTrue(q.contains(I));
322	<	}
323	<	assertEquals(SIZE, q.size());
324	<	}
325	<	finally {
294	>	public void testPut() {
295	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
296	>	for (int i = 0; i < SIZE; ++i) {
297	>	Integer x = new Integer(i);
298	>	q.put(x);
299	>	assertTrue(q.contains(x));
300		}
301	+	assertEquals(SIZE, q.size());
302		}
303
304		/**
305		* put doesn't block waiting for take
306		*/
307	<	public void testPutWithTake() {
307	>	public void testPutWithTake() throws InterruptedException {
308		final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
309	<	Thread t = new Thread(new Runnable() {
310	<	public void run() {
311	<	int added = 0;
312	<	try {
313	<	q.put(new Integer(0));
314	<	++added;
315	<	q.put(new Integer(0));
316	<	++added;
317	<	q.put(new Integer(0));
318	<	++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	<	}
309	>	final int size = 4;
310	>	Thread t = newStartedThread(new CheckedRunnable() {
311	>	public void realRun() {
312	>	for (int i = 0; i < size; i++)
313	>	q.put(new Integer(0));
314	>	}});
315	>
316	>	awaitTermination(t);
317	>	assertEquals(size, q.size());
318	>	q.take();
319		}
320
321		/**
#	Line 364 | Line 323 | public class PriorityBlockingQueueTest e
323		*/
324		public void testTimedOffer() {
325		final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
326	<	Thread t = new Thread(new Runnable() {
327	<	public void run() {
328	<	try {
329	<	q.put(new Integer(0));
330	<	q.put(new Integer(0));
331	<	threadAssertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
332	<	threadAssertTrue(q.offer(new Integer(0), LONG_DELAY_MS, TimeUnit.MILLISECONDS));
374	<	} finally { }
375	<	}
376	<	});
377	<
378	<	try {
379	<	t.start();
380	<	Thread.sleep(SMALL_DELAY_MS);
381	<	t.interrupt();
382	<	t.join();
383	<	} catch (Exception e){
384	<	unexpectedException();
385	<	}
386	<	}
326	>	Thread t = newStartedThread(new CheckedRunnable() {
327	>	public void realRun() {
328	>	q.put(new Integer(0));
329	>	q.put(new Integer(0));
330	>	assertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, MILLISECONDS));
331	>	assertTrue(q.offer(new Integer(0), LONG_DELAY_MS, MILLISECONDS));
332	>	}});
333
334	<	/**
389	<	* take retrieves elements in priority order
390	<	*/
391	<	public void testTake() {
392	<	try {
393	<	PriorityBlockingQueue q = populatedQueue(SIZE);
394	<	for (int i = 0; i < SIZE; ++i) {
395	<	assertEquals(i, ((Integer)q.take()).intValue());
396	<	}
397	<	} catch (InterruptedException e){
398	<	unexpectedException();
399	<	}
334	>	awaitTermination(t);
335		}
336
337		/**
338	<	* take blocks interruptibly when empty
338	>	* take retrieves elements in priority order
339		*/
340	<	public void testTakeFromEmpty() {
341	<	final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
342	<	Thread t = new Thread(new Runnable() {
343	<	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();
340	>	public void testTake() throws InterruptedException {
341	>	PriorityBlockingQueue q = populatedQueue(SIZE);
342	>	for (int i = 0; i < SIZE; ++i) {
343	>	assertEquals(i, q.take());
344		}
345		}
346
347		/**
348		* Take removes existing elements until empty, then blocks interruptibly
349		*/
350	<	public void testBlockingTake() {
351	<	Thread t = new Thread(new Runnable() {
352	<	public void run() {
353	<	try {
354	<	PriorityBlockingQueue q = populatedQueue(SIZE);
355	<	for (int i = 0; i < SIZE; ++i) {
356	<	threadAssertEquals(i, ((Integer)q.take()).intValue());
357	<	}
358	<	q.take();
359	<	threadShouldThrow();
360	<	} catch (InterruptedException success){
361	<	}
362	<	}});
441	<	t.start();
442	<	try {
443	<	Thread.sleep(SHORT_DELAY_MS);
444	<	t.interrupt();
445	<	t.join();
446	<	}
447	<	catch (InterruptedException ie) {
448	<	unexpectedException();
449	<	}
450	<	}
350	>	public void testBlockingTake() throws InterruptedException {
351	>	final PriorityBlockingQueue q = populatedQueue(SIZE);
352	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
353	>	Thread t = newStartedThread(new CheckedRunnable() {
354	>	public void realRun() throws InterruptedException {
355	>	for (int i = 0; i < SIZE; i++) assertEquals(i, q.take());
356	>
357	>	Thread.currentThread().interrupt();
358	>	try {
359	>	q.take();
360	>	shouldThrow();
361	>	} catch (InterruptedException success) {}
362	>	assertFalse(Thread.interrupted());
363
364	+	pleaseInterrupt.countDown();
365	+	try {
366	+	q.take();
367	+	shouldThrow();
368	+	} catch (InterruptedException success) {}
369	+	assertFalse(Thread.interrupted());
370	+	}});
371	+
372	+	await(pleaseInterrupt);
373	+	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
374	+	t.interrupt();
375	+	awaitTermination(t);
376	+	}
377
378		/**
379		* poll succeeds unless empty
#	Line 456 | Line 381 | public class PriorityBlockingQueueTest e
381		public void testPoll() {
382		PriorityBlockingQueue q = populatedQueue(SIZE);
383		for (int i = 0; i < SIZE; ++i) {
384	<	assertEquals(i, ((Integer)q.poll()).intValue());
384	>	assertEquals(i, q.poll());
385		}
386	<	assertNull(q.poll());
386	>	assertNull(q.poll());
387		}
388
389		/**
390	<	* timed pool with zero timeout succeeds when non-empty, else times out
390	>	* timed poll with zero timeout succeeds when non-empty, else times out
391		*/
392	<	public void testTimedPoll0() {
393	<	try {
394	<	PriorityBlockingQueue q = populatedQueue(SIZE);
395	<	for (int i = 0; i < SIZE; ++i) {
396	<	assertEquals(i, ((Integer)q.poll(0, TimeUnit.MILLISECONDS)).intValue());
397	<	}
473	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
474	<	} catch (InterruptedException e){
475	<	unexpectedException();
476	<	}
392	>	public void testTimedPoll0() throws InterruptedException {
393	>	PriorityBlockingQueue q = populatedQueue(SIZE);
394	>	for (int i = 0; i < SIZE; ++i) {
395	>	assertEquals(i, q.poll(0, MILLISECONDS));
396	>	}
397	>	assertNull(q.poll(0, MILLISECONDS));
398		}
399
400		/**
401	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
401	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
402		*/
403	<	public void testTimedPoll() {
404	<	try {
405	<	PriorityBlockingQueue q = populatedQueue(SIZE);
406	<	for (int i = 0; i < SIZE; ++i) {
407	<	assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
408	<	}
409	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
410	<	} catch (InterruptedException e){
411	<	unexpectedException();
412	<	}
403	>	public void testTimedPoll() throws InterruptedException {
404	>	PriorityBlockingQueue<Integer> q = populatedQueue(SIZE);
405	>	for (int i = 0; i < SIZE; ++i) {
406	>	long startTime = System.nanoTime();
407	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
408	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
409	>	}
410	>	long startTime = System.nanoTime();
411	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
412	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
413	>	checkEmpty(q);
414		}
415
416		/**
417		* Interrupted timed poll throws InterruptedException instead of
418		* returning timeout status
419		*/
420	<	public void testInterruptedTimedPoll() {
421	<	Thread t = new Thread(new Runnable() {
422	<	public void run() {
423	<	try {
424	<	PriorityBlockingQueue q = populatedQueue(SIZE);
425	<	for (int i = 0; i < SIZE; ++i) {
426	<	threadAssertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
427	<	}
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	<	}
420	>	public void testInterruptedTimedPoll() throws InterruptedException {
421	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
422	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
423	>	Thread t = newStartedThread(new CheckedRunnable() {
424	>	public void realRun() throws InterruptedException {
425	>	long startTime = System.nanoTime();
426	>	for (int i = 0; i < SIZE; i++)
427	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
428
429	<	/**
430	<	*  timed poll before a delayed offer fails; after offer succeeds;
431	<	*  on interruption throws
432	<	*/
433	<	public void testTimedPollWithOffer() {
434	<	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) { }
535	<	}
536	<	});
537	<	try {
538	<	t.start();
539	<	Thread.sleep(SMALL_DELAY_MS);
540	<	assertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
541	<	t.interrupt();
542	<	t.join();
543	<	} catch (Exception e){
544	<	unexpectedException();
545	<	}
546	<	}
429	>	Thread.currentThread().interrupt();
430	>	try {
431	>	q.poll(randomTimeout(), randomTimeUnit());
432	>	shouldThrow();
433	>	} catch (InterruptedException success) {}
434	>	assertFalse(Thread.interrupted());
435
436	+	pleaseInterrupt.countDown();
437	+	try {
438	+	q.poll(LONG_DELAY_MS, MILLISECONDS);
439	+	shouldThrow();
440	+	} catch (InterruptedException success) {}
441	+	assertFalse(Thread.interrupted());
442	+
443	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
444	+	}});
445	+
446	+	await(pleaseInterrupt);
447	+	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
448	+	t.interrupt();
449	+	awaitTermination(t);
450	+	}
451
452		/**
453		* peek returns next element, or null if empty
#	Line 552 | Line 455 | public class PriorityBlockingQueueTest e
455		public void testPeek() {
456		PriorityBlockingQueue q = populatedQueue(SIZE);
457		for (int i = 0; i < SIZE; ++i) {
458	<	assertEquals(i, ((Integer)q.peek()).intValue());
459	<	q.poll();
458	>	assertEquals(i, q.peek());
459	>	assertEquals(i, q.poll());
460		assertTrue(q.peek() == null ||
461	<	i != ((Integer)q.peek()).intValue());
461	>	!q.peek().equals(i));
462		}
463	<	assertNull(q.peek());
463	>	assertNull(q.peek());
464		}
465
466		/**
#	Line 566 | Line 469 | public class PriorityBlockingQueueTest e
469		public void testElement() {
470		PriorityBlockingQueue q = populatedQueue(SIZE);
471		for (int i = 0; i < SIZE; ++i) {
472	<	assertEquals(i, ((Integer)q.element()).intValue());
473	<	q.poll();
472	>	assertEquals(i, q.element());
473	>	assertEquals(i, q.poll());
474		}
475		try {
476		q.element();
477		shouldThrow();
478	<	}
576	<	catch (NoSuchElementException success) {}
478	>	} catch (NoSuchElementException success) {}
479		}
480
481		/**
#	Line 582 | Line 484 | public class PriorityBlockingQueueTest e
484		public void testRemove() {
485		PriorityBlockingQueue q = populatedQueue(SIZE);
486		for (int i = 0; i < SIZE; ++i) {
487	<	assertEquals(i, ((Integer)q.remove()).intValue());
487	>	assertEquals(i, q.remove());
488		}
489		try {
490		q.remove();
491		shouldThrow();
492	<	} catch (NoSuchElementException success){
591	<	}
492	>	} catch (NoSuchElementException success) {}
493		}
494
495		/**
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());
607	–	}
608	–
609	–	/**
496		* contains(x) reports true when elements added but not yet removed
497		*/
498		public void testContains() {
#	Line 626 | Line 512 | public class PriorityBlockingQueueTest e
512		q.clear();
513		assertTrue(q.isEmpty());
514		assertEquals(0, q.size());
515	<	assertEquals(NOCAP, q.remainingCapacity());
630	<	q.add(new Integer(1));
515	>	q.add(one);
516		assertFalse(q.isEmpty());
517	+	assertTrue(q.contains(one));
518		q.clear();
519		assertTrue(q.isEmpty());
520		}
#	Line 661 | Line 547 | public class PriorityBlockingQueueTest e
547		assertTrue(changed);
548
549		assertTrue(q.containsAll(p));
550	<	assertEquals(SIZE-i, q.size());
550	>	assertEquals(SIZE - i, q.size());
551		p.remove();
552		}
553		}
#	Line 674 | Line 560 | public class PriorityBlockingQueueTest e
560		PriorityBlockingQueue q = populatedQueue(SIZE);
561		PriorityBlockingQueue p = populatedQueue(i);
562		assertTrue(q.removeAll(p));
563	<	assertEquals(SIZE-i, q.size());
563	>	assertEquals(SIZE - i, q.size());
564		for (int j = 0; j < i; ++j) {
565	<	Integer I = (Integer)(p.remove());
566	<	assertFalse(q.contains(I));
565	>	Integer x = (Integer)(p.remove());
566	>	assertFalse(q.contains(x));
567		}
568		}
569		}
570
571		/**
572	<	*  toArray contains all elements
572	>	* toArray contains all elements
573		*/
574	<	public void testToArray() {
574	>	public void testToArray() throws InterruptedException {
575		PriorityBlockingQueue q = populatedQueue(SIZE);
576	<	Object[] o = q.toArray();
577	<	Arrays.sort(o);
578	<	try {
579	<	for(int i = 0; i < o.length; i++)
580	<	assertEquals(o[i], q.take());
581	<	} catch (InterruptedException e){
696	<	unexpectedException();
697	<	}
576	>	Object[] a = q.toArray();
577	>	assertSame(Object[].class, a.getClass());
578	>	Arrays.sort(a);
579	>	for (Object o : a)
580	>	assertSame(o, q.take());
581	>	assertTrue(q.isEmpty());
582		}
583
584		/**
585		* toArray(a) contains all elements
586		*/
587	<	public void testToArray2() {
588	<	PriorityBlockingQueue q = populatedQueue(SIZE);
589	<	Integer[] ints = new Integer[SIZE];
590	<	ints = (Integer[])q.toArray(ints);
587	>	public void testToArray2() throws InterruptedException {
588	>	PriorityBlockingQueue<Integer> q = populatedQueue(SIZE);
589	>	Integer[] ints = new Integer[SIZE];
590	>	Integer[] array = q.toArray(ints);
591	>	assertSame(ints, array);
592		Arrays.sort(ints);
593	<	try {
594	<	for(int i = 0; i < ints.length; i++)
595	<	assertEquals(ints[i], q.take());
711	<	} catch (InterruptedException e){
712	<	unexpectedException();
713	<	}
714	<	}
715	<
716	<	/**
717	<	* 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){}
593	>	for (Integer o : ints)
594	>	assertSame(o, q.take());
595	>	assertTrue(q.isEmpty());
596		}
597
598		/**
599	<	* toArray with incompatable array type throws CCE
599	>	* toArray(incompatible array type) throws ArrayStoreException
600		*/
601		public void testToArray1_BadArg() {
602	<	try {
603	<	PriorityBlockingQueue q = populatedQueue(SIZE);
604	<	Object o[] = q.toArray(new String[10] );
605	<	shouldThrow();
606	<	} catch(ArrayStoreException  success){}
602	>	PriorityBlockingQueue q = populatedQueue(SIZE);
603	>	try {
604	>	q.toArray(new String[10]);
605	>	shouldThrow();
606	>	} catch (ArrayStoreException success) {}
607		}
608	<
608	>
609		/**
610		* iterator iterates through all elements
611		*/
612		public void testIterator() {
613		PriorityBlockingQueue q = populatedQueue(SIZE);
614	<	int i = 0;
615	<	Iterator it = q.iterator();
616	<	while(it.hasNext()) {
614	>	Iterator it = q.iterator();
615	>	int i;
616	>	for (i = 0; it.hasNext(); i++)
617		assertTrue(q.contains(it.next()));
747	–	++i;
748	–	}
618		assertEquals(i, SIZE);
619	+	assertIteratorExhausted(it);
620	+	}
621	+
622	+	/**
623	+	* iterator of empty collection has no elements
624	+	*/
625	+	public void testEmptyIterator() {
626	+	assertIteratorExhausted(new PriorityBlockingQueue().iterator());
627		}
628
629		/**
630		* iterator.remove removes current element
631		*/
632	<	public void testIteratorRemove () {
632	>	public void testIteratorRemove() {
633		final PriorityBlockingQueue q = new PriorityBlockingQueue(3);
634		q.add(new Integer(2));
635		q.add(new Integer(1));
#	Line 768 | Line 645 | public class PriorityBlockingQueueTest e
645		assertFalse(it.hasNext());
646		}
647
771	–
648		/**
649		* toString contains toStrings of elements
650		*/
#	Line 776 | Line 652 | public class PriorityBlockingQueueTest e
652		PriorityBlockingQueue q = populatedQueue(SIZE);
653		String s = q.toString();
654		for (int i = 0; i < SIZE; ++i) {
655	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
655	>	assertTrue(s.contains(String.valueOf(i)));
656		}
657	<	}
657	>	}
658
659		/**
660	<	* offer transfers elements across Executor tasks
660	>	* timed poll transfers elements across Executor tasks
661		*/
662		public void testPollInExecutor() {
663		final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
664	<	ExecutorService executor = Executors.newFixedThreadPool(2);
665	<	executor.execute(new Runnable() {
666	<	public void run() {
667	<	threadAssertNull(q.poll());
668	<	try {
669	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
670	<	threadAssertTrue(q.isEmpty());
671	<	}
672	<	catch (InterruptedException e) {
673	<	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	<	}
664	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
665	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
666	>	try (PoolCleaner cleaner = cleaner(executor)) {
667	>	executor.execute(new CheckedRunnable() {
668	>	public void realRun() throws InterruptedException {
669	>	assertNull(q.poll());
670	>	threadsStarted.await();
671	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
672	>	checkEmpty(q);
673	>	}});
674
675	<	/**
676	<	* drainTo(null) throws NPE
677	<	*/
678	<	public void testDrainToNull() {
679	<	PriorityBlockingQueue q = populatedQueue(SIZE);
844	<	try {
845	<	q.drainTo(null);
846	<	shouldThrow();
847	<	} catch(NullPointerException success) {
675	>	executor.execute(new CheckedRunnable() {
676	>	public void realRun() throws InterruptedException {
677	>	threadsStarted.await();
678	>	q.put(one);
679	>	}});
680		}
681		}
682
683		/**
684	<	* drainTo(this) throws IAE
685	<	*/
686	<	public void testDrainToSelf() {
687	<	PriorityBlockingQueue q = populatedQueue(SIZE);
688	<	try {
689	<	q.drainTo(q);
690	<	shouldThrow();
691	<	} catch(IllegalArgumentException success) {
684	>	* A deserialized/reserialized queue has same elements
685	>	*/
686	>	public void testSerialization() throws Exception {
687	>	Queue x = populatedQueue(SIZE);
688	>	Queue y = serialClone(x);
689	>
690	>	assertNotSame(x, y);
691	>	assertEquals(x.size(), y.size());
692	>	while (!x.isEmpty()) {
693	>	assertFalse(y.isEmpty());
694	>	assertEquals(x.remove(), y.remove());
695		}
696	+	assertTrue(y.isEmpty());
697		}
698
699		/**
700		* drainTo(c) empties queue into another collection c
701	<	*/
701	>	*/
702		public void testDrainTo() {
703		PriorityBlockingQueue q = populatedQueue(SIZE);
704		ArrayList l = new ArrayList();
705		q.drainTo(l);
706	<	assertEquals(q.size(), 0);
707	<	assertEquals(l.size(), SIZE);
708	<	for (int i = 0; i < SIZE; ++i)
706	>	assertEquals(0, q.size());
707	>	assertEquals(SIZE, l.size());
708	>	for (int i = 0; i < SIZE; ++i)
709	>	assertEquals(l.get(i), new Integer(i));
710	>	q.add(zero);
711	>	q.add(one);
712	>	assertFalse(q.isEmpty());
713	>	assertTrue(q.contains(zero));
714	>	assertTrue(q.contains(one));
715	>	l.clear();
716	>	q.drainTo(l);
717	>	assertEquals(0, q.size());
718	>	assertEquals(2, l.size());
719	>	for (int i = 0; i < 2; ++i)
720		assertEquals(l.get(i), new Integer(i));
721		}
722
723		/**
724		* drainTo empties queue
725	<	*/
726	<	public void testDrainToWithActivePut() {
725	>	*/
726	>	public void testDrainToWithActivePut() throws InterruptedException {
727		final PriorityBlockingQueue q = populatedQueue(SIZE);
728	<	Thread t = new Thread(new Runnable() {
729	<	public void run() {
730	<	q.put(new Integer(SIZE+1));
731	<	}
885	<	});
886	<	try {
887	<	t.start();
888	<	ArrayList l = new ArrayList();
889	<	q.drainTo(l);
890	<	assertTrue(l.size() >= SIZE);
891	<	for (int i = 0; i < SIZE; ++i)
892	<	assertEquals(l.get(i), new Integer(i));
893	<	t.join();
894	<	assertTrue(q.size() + l.size() == SIZE+1);
895	<	} catch(Exception e){
896	<	unexpectedException();
897	<	}
898	<	}
728	>	Thread t = new Thread(new CheckedRunnable() {
729	>	public void realRun() {
730	>	q.put(new Integer(SIZE + 1));
731	>	}});
732
733	<	/**
734	<	* drainTo(null, n) throws NPE
735	<	*/
736	<	public void testDrainToNullN() {
737	<	PriorityBlockingQueue q = populatedQueue(SIZE);
738	<	try {
739	<	q.drainTo(null, 0);
740	<	shouldThrow();
908	<	} catch(NullPointerException success) {
909	<	}
910	<	}
911	<
912	<	/**
913	<	* drainTo(this, n) throws IAE
914	<	*/
915	<	public void testDrainToSelfN() {
916	<	PriorityBlockingQueue q = populatedQueue(SIZE);
917	<	try {
918	<	q.drainTo(q, 0);
919	<	shouldThrow();
920	<	} catch(IllegalArgumentException success) {
921	<	}
733	>	t.start();
734	>	ArrayList l = new ArrayList();
735	>	q.drainTo(l);
736	>	assertTrue(l.size() >= SIZE);
737	>	for (int i = 0; i < SIZE; ++i)
738	>	assertEquals(l.get(i), new Integer(i));
739	>	t.join();
740	>	assertTrue(q.size() + l.size() >= SIZE);
741		}
742
743		/**
744	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
745	<	*/
744	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
745	>	*/
746		public void testDrainToN() {
747	+	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE * 2);
748		for (int i = 0; i < SIZE + 2; ++i) {
749	<	PriorityBlockingQueue q = populatedQueue(SIZE);
749	>	for (int j = 0; j < SIZE; j++)
750	>	assertTrue(q.offer(new Integer(j)));
751		ArrayList l = new ArrayList();
752		q.drainTo(l, i);
753	<	int k = (i < SIZE)? i : SIZE;
754	<	assertEquals(q.size(), SIZE-k);
755	<	assertEquals(l.size(), k);
756	<	for (int j = 0; j < k; ++j)
757	<	assertTrue(l.contains(new Integer(j)));
753	>	int k = (i < SIZE) ? i : SIZE;
754	>	assertEquals(k, l.size());
755	>	assertEquals(SIZE - k, q.size());
756	>	for (int j = 0; j < k; ++j)
757	>	assertEquals(l.get(j), new Integer(j));
758	>	do {} while (q.poll() != null);
759		}
760		}
761
762	+	/**
763	+	* remove(null), contains(null) always return false
764	+	*/
765	+	public void testNeverContainsNull() {
766	+	Collection<?>[] qs = {
767	+	new PriorityBlockingQueue<Object>(),
768	+	populatedQueue(2),
769	+	};
770	+
771	+	for (Collection<?> q : qs) {
772	+	assertFalse(q.contains(null));
773	+	assertFalse(q.remove(null));
774	+	}
775	+	}
776
777		}

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