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Comparing jsr166/src/test/tck/PriorityBlockingQueueTest.java (file contents):
Revision 1.6 by dl, Thu Sep 25 11:02:41 2003 UTC vs.
Revision 1.59 by jsr166, Sat Feb 28 19:59:23 2015 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
2	>	* Written by Doug Lea with assistance from members of JCP JSR-166
3	>	* Expert Group and released to the public domain, as explained at
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.*;
11	<	import java.util.concurrent.*;
12	<	import java.io.*;
9	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	>
11	>	import java.util.ArrayList;
12	>	import java.util.Arrays;
13	>	import java.util.Collection;
14	>	import java.util.Comparator;
15	>	import java.util.Iterator;
16	>	import java.util.NoSuchElementException;
17	>	import java.util.Queue;
18	>	import java.util.concurrent.BlockingQueue;
19	>	import java.util.concurrent.CountDownLatch;
20	>	import java.util.concurrent.Executors;
21	>	import java.util.concurrent.ExecutorService;
22	>	import java.util.concurrent.PriorityBlockingQueue;
23	>
24	>	import junit.framework.Test;
25
26		public class PriorityBlockingQueueTest extends JSR166TestCase {
27	+
28	+	public static class Generic extends BlockingQueueTest {
29	+	protected BlockingQueue emptyCollection() {
30	+	return new PriorityBlockingQueue();
31	+	}
32	+	}
33	+
34	+	public static class InitialCapacity extends BlockingQueueTest {
35	+	protected BlockingQueue emptyCollection() {
36	+	return new PriorityBlockingQueue(SIZE);
37	+	}
38	+	}
39	+
40		public static void main(String[] args) {
41	<	junit.textui.TestRunner.run (suite());
41	>	junit.textui.TestRunner.run(suite());
42		}
43	+
44		public static Test suite() {
45	<	return new TestSuite(PriorityBlockingQueueTest.class);
45	>	return newTestSuite(PriorityBlockingQueueTest.class,
46	>	new Generic().testSuite(),
47	>	new InitialCapacity().testSuite());
48		}
49
21	–	private static final int NOCAP = Integer.MAX_VALUE;
22	–
50		/** Sample Comparator */
51	<	static class MyReverseComparator implements Comparator {
51	>	static class MyReverseComparator implements Comparator {
52		public int compare(Object x, Object y) {
53	<	int i = ((Integer)x).intValue();
27	<	int j = ((Integer)y).intValue();
28	<	if (i < j) return 1;
29	<	if (i > j) return -1;
30	<	return 0;
53	>	return ((Comparable)y).compareTo(x);
54		}
55		}
56
57		/**
58	<	* Create a queue of given size containing consecutive
58	>	* Returns a new queue of given size containing consecutive
59		* Integers 0 ... n.
60		*/
61	<	private PriorityBlockingQueue populatedQueue(int n) {
62	<	PriorityBlockingQueue q = new PriorityBlockingQueue(n);
61	>	private PriorityBlockingQueue<Integer> populatedQueue(int n) {
62	>	PriorityBlockingQueue<Integer> q =
63	>	new PriorityBlockingQueue<Integer>(n);
64		assertTrue(q.isEmpty());
65	<	for(int i = n-1; i >= 0; i-=2)
66	<	assertTrue(q.offer(new Integer(i)));
67	<	for(int i = (n & 1); i < n; i+=2)
68	<	assertTrue(q.offer(new Integer(i)));
65	>	for (int i = n-1; i >= 0; i -= 2)
66	>	assertTrue(q.offer(new Integer(i)));
67	>	for (int i = (n & 1); i < n; i += 2)
68	>	assertTrue(q.offer(new Integer(i)));
69		assertFalse(q.isEmpty());
70	<	assertEquals(NOCAP, q.remainingCapacity());
71	<	assertEquals(n, q.size());
70	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
71	>	assertEquals(n, q.size());
72		return q;
73		}
74	<
74	>
75		/**
76		* A new queue has unbounded capacity
77		*/
78		public void testConstructor1() {
79	<	assertEquals(NOCAP, new PriorityBlockingQueue(SIZE).remainingCapacity());
79	>	assertEquals(Integer.MAX_VALUE,
80	>	new PriorityBlockingQueue(SIZE).remainingCapacity());
81		}
82
83		/**
84	<	* Constructor throws IAE if  capacity argument nonpositive
84	>	* Constructor throws IAE if capacity argument nonpositive
85		*/
86		public void testConstructor2() {
87		try {
88	<	PriorityBlockingQueue q = new PriorityBlockingQueue(0);
88	>	new PriorityBlockingQueue(0);
89		shouldThrow();
90	<	}
66	<	catch (IllegalArgumentException success) {}
90	>	} catch (IllegalArgumentException success) {}
91		}
92
93		/**
#	Line 71 | Line 95 | public class PriorityBlockingQueueTest e
95		*/
96		public void testConstructor3() {
97		try {
98	<	PriorityBlockingQueue q = new PriorityBlockingQueue(null);
98	>	new PriorityBlockingQueue(null);
99		shouldThrow();
100	<	}
77	<	catch (NullPointerException success) {}
100	>	} catch (NullPointerException success) {}
101		}
102
103		/**
104		* Initializing from Collection of null elements throws NPE
105		*/
106		public void testConstructor4() {
107	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
108		try {
109	<	Integer[] ints = new Integer[SIZE];
86	<	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
109	>	new PriorityBlockingQueue(elements);
110		shouldThrow();
111	<	}
89	<	catch (NullPointerException success) {}
111	>	} catch (NullPointerException success) {}
112		}
113
114		/**
115		* Initializing from Collection with some null elements throws NPE
116		*/
117		public void testConstructor5() {
118	+	Integer[] ints = new Integer[SIZE];
119	+	for (int i = 0; i < SIZE-1; ++i)
120	+	ints[i] = i;
121	+	Collection<Integer> elements = Arrays.asList(ints);
122		try {
123	<	Integer[] ints = new Integer[SIZE];
98	<	for (int i = 0; i < SIZE-1; ++i)
99	<	ints[i] = new Integer(i);
100	<	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
123	>	new PriorityBlockingQueue(elements);
124		shouldThrow();
125	<	}
103	<	catch (NullPointerException success) {}
125	>	} catch (NullPointerException success) {}
126		}
127
128		/**
129		* Queue contains all elements of collection used to initialize
130		*/
131		public void testConstructor6() {
132	<	try {
133	<	Integer[] ints = new Integer[SIZE];
134	<	for (int i = 0; i < SIZE; ++i)
135	<	ints[i] = new Integer(i);
136	<	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
137	<	for (int i = 0; i < SIZE; ++i)
116	<	assertEquals(ints[i], q.poll());
117	<	}
118	<	finally {}
132	>	Integer[] ints = new Integer[SIZE];
133	>	for (int i = 0; i < SIZE; ++i)
134	>	ints[i] = i;
135	>	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
136	>	for (int i = 0; i < SIZE; ++i)
137	>	assertEquals(ints[i], q.poll());
138		}
139
140		/**
141		* The comparator used in constructor is used
142		*/
143		public void testConstructor7() {
144	<	try {
145	<	MyReverseComparator cmp = new MyReverseComparator();
146	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE, cmp);
147	<	assertEquals(cmp, q.comparator());
148	<	Integer[] ints = new Integer[SIZE];
149	<	for (int i = 0; i < SIZE; ++i)
150	<	ints[i] = new Integer(i);
151	<	q.addAll(Arrays.asList(ints));
152	<	for (int i = SIZE-1; i >= 0; --i)
134	<	assertEquals(ints[i], q.poll());
135	<	}
136	<	finally {}
144	>	MyReverseComparator cmp = new MyReverseComparator();
145	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE, cmp);
146	>	assertEquals(cmp, q.comparator());
147	>	Integer[] ints = new Integer[SIZE];
148	>	for (int i = 0; i < SIZE; ++i)
149	>	ints[i] = new Integer(i);
150	>	q.addAll(Arrays.asList(ints));
151	>	for (int i = SIZE-1; i >= 0; --i)
152	>	assertEquals(ints[i], q.poll());
153		}
154
155		/**
#	Line 142 | Line 158 | public class PriorityBlockingQueueTest e
158		public void testEmpty() {
159		PriorityBlockingQueue q = new PriorityBlockingQueue(2);
160		assertTrue(q.isEmpty());
161	<	assertEquals(NOCAP, q.remainingCapacity());
161	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
162		q.add(one);
163		assertFalse(q.isEmpty());
164		q.add(two);
#	Line 152 | Line 168 | public class PriorityBlockingQueueTest e
168		}
169
170		/**
171	<	* remainingCapacity does not change when elementa added or removed,
156	<	* but size does
171	>	* remainingCapacity() always returns Integer.MAX_VALUE
172		*/
173		public void testRemainingCapacity() {
174	<	PriorityBlockingQueue q = populatedQueue(SIZE);
174	>	BlockingQueue q = populatedQueue(SIZE);
175		for (int i = 0; i < SIZE; ++i) {
176	<	assertEquals(NOCAP, q.remainingCapacity());
177	<	assertEquals(SIZE-i, q.size());
178	<	q.remove();
176	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
177	>	assertEquals(SIZE - i, q.size());
178	>	assertEquals(i, q.remove());
179		}
180		for (int i = 0; i < SIZE; ++i) {
181	<	assertEquals(NOCAP, q.remainingCapacity());
181	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
182		assertEquals(i, q.size());
183	<	q.add(new Integer(i));
183	>	assertTrue(q.add(i));
184		}
185		}
186
187		/**
173	–	* offer(null) throws NPE
174	–	*/
175	–	public void testOfferNull() {
176	–	try {
177	–	PriorityBlockingQueue q = new PriorityBlockingQueue(1);
178	–	q.offer(null);
179	–	shouldThrow();
180	–	} catch (NullPointerException success) { }
181	–	}
182	–
183	–	/**
188		* Offer of comparable element succeeds
189		*/
190		public void testOffer() {
#	Line 199 | Line 203 | public class PriorityBlockingQueueTest e
203		q.offer(new Object());
204		q.offer(new Object());
205		shouldThrow();
206	<	}
203	<	catch(ClassCastException success) {}
206	>	} catch (ClassCastException success) {}
207		}
208
209		/**
#	Line 215 | Line 218 | public class PriorityBlockingQueueTest e
218		}
219
220		/**
221	<	* addAll(null) throws NPE
221	>	* addAll(this) throws IAE
222		*/
223	<	public void testAddAll1() {
223	>	public void testAddAllSelf() {
224		try {
225	<	PriorityBlockingQueue q = new PriorityBlockingQueue(1);
226	<	q.addAll(null);
224	<	shouldThrow();
225	<	}
226	<	catch (NullPointerException success) {}
227	<	}
228	<	/**
229	<	* addAll of a collection with null elements throws NPE
230	<	*/
231	<	public void testAddAll2() {
232	<	try {
233	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
234	<	Integer[] ints = new Integer[SIZE];
235	<	q.addAll(Arrays.asList(ints));
225	>	PriorityBlockingQueue q = populatedQueue(SIZE);
226	>	q.addAll(q);
227		shouldThrow();
228	<	}
238	<	catch (NullPointerException success) {}
228	>	} catch (IllegalArgumentException success) {}
229		}
230	+
231		/**
232		* addAll of a collection with any null elements throws NPE after
233		* possibly adding some elements
#	Line 249 | Line 240 | public class PriorityBlockingQueueTest e
240		ints[i] = new Integer(i);
241		q.addAll(Arrays.asList(ints));
242		shouldThrow();
243	<	}
253	<	catch (NullPointerException success) {}
243	>	} catch (NullPointerException success) {}
244		}
245
246		/**
247		* Queue contains all elements of successful addAll
248		*/
249		public void testAddAll5() {
250	<	try {
251	<	Integer[] empty = new Integer[0];
252	<	Integer[] ints = new Integer[SIZE];
253	<	for (int i = SIZE-1; i >= 0; --i)
254	<	ints[i] = new Integer(i);
255	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
256	<	assertFalse(q.addAll(Arrays.asList(empty)));
257	<	assertTrue(q.addAll(Arrays.asList(ints)));
258	<	for (int i = 0; i < SIZE; ++i)
269	<	assertEquals(ints[i], q.poll());
270	<	}
271	<	finally {}
250	>	Integer[] empty = new Integer[0];
251	>	Integer[] ints = new Integer[SIZE];
252	>	for (int i = SIZE-1; i >= 0; --i)
253	>	ints[i] = new Integer(i);
254	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
255	>	assertFalse(q.addAll(Arrays.asList(empty)));
256	>	assertTrue(q.addAll(Arrays.asList(ints)));
257	>	for (int i = 0; i < SIZE; ++i)
258	>	assertEquals(ints[i], q.poll());
259		}
260
261		/**
275	–	* put(null) throws NPE
276	–	*/
277	–	public void testPutNull() {
278	–	try {
279	–	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
280	–	q.put(null);
281	–	shouldThrow();
282	–	}
283	–	catch (NullPointerException success){
284	–	}
285	–	}
286	–
287	–	/**
262		* all elements successfully put are contained
263		*/
264	<	public void testPut() {
265	<	try {
266	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
267	<	for (int i = 0; i < SIZE; ++i) {
268	<	Integer I = new Integer(i);
269	<	q.put(I);
296	<	assertTrue(q.contains(I));
297	<	}
298	<	assertEquals(SIZE, q.size());
299	<	}
300	<	finally {
264	>	public void testPut() {
265	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
266	>	for (int i = 0; i < SIZE; ++i) {
267	>	Integer x = new Integer(i);
268	>	q.put(x);
269	>	assertTrue(q.contains(x));
270		}
271	+	assertEquals(SIZE, q.size());
272		}
273
274		/**
275		* put doesn't block waiting for take
276		*/
277	<	public void testPutWithTake() {
277	>	public void testPutWithTake() throws InterruptedException {
278		final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
279	<	Thread t = new Thread(new Runnable() {
280	<	public void run() {
281	<	int added = 0;
282	<	try {
283	<	q.put(new Integer(0));
284	<	++added;
285	<	q.put(new Integer(0));
286	<	++added;
287	<	q.put(new Integer(0));
288	<	++added;
319	<	q.put(new Integer(0));
320	<	++added;
321	<	threadAssertTrue(added == 4);
322	<	} finally {
323	<	}
324	<	}
325	<	});
326	<	try {
327	<	t.start();
328	<	Thread.sleep(SHORT_DELAY_MS);
329	<	q.take();
330	<	t.interrupt();
331	<	t.join();
332	<	} catch (Exception e){
333	<	unexpectedException();
334	<	}
279	>	final int size = 4;
280	>	Thread t = newStartedThread(new CheckedRunnable() {
281	>	public void realRun() {
282	>	for (int i = 0; i < size; i++)
283	>	q.put(new Integer(0));
284	>	}});
285	>
286	>	awaitTermination(t);
287	>	assertEquals(size, q.size());
288	>	q.take();
289		}
290
291		/**
292		* timed offer does not time out
293		*/
294	<	public void testTimedOffer() {
294	>	public void testTimedOffer() throws InterruptedException {
295		final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
296	<	Thread t = new Thread(new Runnable() {
297	<	public void run() {
298	<	try {
299	<	q.put(new Integer(0));
300	<	q.put(new Integer(0));
301	<	threadAssertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
302	<	threadAssertTrue(q.offer(new Integer(0), LONG_DELAY_MS, TimeUnit.MILLISECONDS));
349	<	} finally { }
350	<	}
351	<	});
352	<
353	<	try {
354	<	t.start();
355	<	Thread.sleep(SMALL_DELAY_MS);
356	<	t.interrupt();
357	<	t.join();
358	<	} catch (Exception e){
359	<	unexpectedException();
360	<	}
361	<	}
296	>	Thread t = newStartedThread(new CheckedRunnable() {
297	>	public void realRun() {
298	>	q.put(new Integer(0));
299	>	q.put(new Integer(0));
300	>	assertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, MILLISECONDS));
301	>	assertTrue(q.offer(new Integer(0), LONG_DELAY_MS, MILLISECONDS));
302	>	}});
303
304	<	/**
364	<	* take retrieves elements in priority order
365	<	*/
366	<	public void testTake() {
367	<	try {
368	<	PriorityBlockingQueue q = populatedQueue(SIZE);
369	<	for (int i = 0; i < SIZE; ++i) {
370	<	assertEquals(i, ((Integer)q.take()).intValue());
371	<	}
372	<	} catch (InterruptedException e){
373	<	unexpectedException();
374	<	}
304	>	awaitTermination(t);
305		}
306
307		/**
308	<	* take blocks interruptibly when empty
308	>	* take retrieves elements in priority order
309		*/
310	<	public void testTakeFromEmpty() {
311	<	final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
312	<	Thread t = new Thread(new Runnable() {
313	<	public void run() {
384	<	try {
385	<	q.take();
386	<	threadShouldThrow();
387	<	} catch (InterruptedException success){ }
388	<	}
389	<	});
390	<	try {
391	<	t.start();
392	<	Thread.sleep(SHORT_DELAY_MS);
393	<	t.interrupt();
394	<	t.join();
395	<	} catch (Exception e){
396	<	unexpectedException();
310	>	public void testTake() throws InterruptedException {
311	>	PriorityBlockingQueue q = populatedQueue(SIZE);
312	>	for (int i = 0; i < SIZE; ++i) {
313	>	assertEquals(i, q.take());
314		}
315		}
316
317		/**
318		* Take removes existing elements until empty, then blocks interruptibly
319		*/
320	<	public void testBlockingTake() {
321	<	Thread t = new Thread(new Runnable() {
322	<	public void run() {
323	<	try {
324	<	PriorityBlockingQueue q = populatedQueue(SIZE);
325	<	for (int i = 0; i < SIZE; ++i) {
326	<	threadAssertEquals(i, ((Integer)q.take()).intValue());
327	<	}
411	<	q.take();
412	<	threadShouldThrow();
413	<	} catch (InterruptedException success){
414	<	}
415	<	}});
416	<	t.start();
417	<	try {
418	<	Thread.sleep(SHORT_DELAY_MS);
419	<	t.interrupt();
420	<	t.join();
421	<	}
422	<	catch (InterruptedException ie) {
423	<	unexpectedException();
424	<	}
425	<	}
320	>	public void testBlockingTake() throws InterruptedException {
321	>	final PriorityBlockingQueue q = populatedQueue(SIZE);
322	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
323	>	Thread t = newStartedThread(new CheckedRunnable() {
324	>	public void realRun() throws InterruptedException {
325	>	for (int i = 0; i < SIZE; ++i) {
326	>	assertEquals(i, q.take());
327	>	}
328
329	+	Thread.currentThread().interrupt();
330	+	try {
331	+	q.take();
332	+	shouldThrow();
333	+	} catch (InterruptedException success) {}
334	+	assertFalse(Thread.interrupted());
335	+
336	+	pleaseInterrupt.countDown();
337	+	try {
338	+	q.take();
339	+	shouldThrow();
340	+	} catch (InterruptedException success) {}
341	+	assertFalse(Thread.interrupted());
342	+	}});
343	+
344	+	await(pleaseInterrupt);
345	+	assertThreadStaysAlive(t);
346	+	t.interrupt();
347	+	awaitTermination(t);
348	+	}
349
350		/**
351		* poll succeeds unless empty
#	Line 431 | Line 353 | public class PriorityBlockingQueueTest e
353		public void testPoll() {
354		PriorityBlockingQueue q = populatedQueue(SIZE);
355		for (int i = 0; i < SIZE; ++i) {
356	<	assertEquals(i, ((Integer)q.poll()).intValue());
356	>	assertEquals(i, q.poll());
357		}
358	<	assertNull(q.poll());
358	>	assertNull(q.poll());
359		}
360
361		/**
362	<	* timed pool with zero timeout succeeds when non-empty, else times out
362	>	* timed poll with zero timeout succeeds when non-empty, else times out
363		*/
364	<	public void testTimedPoll0() {
365	<	try {
366	<	PriorityBlockingQueue q = populatedQueue(SIZE);
367	<	for (int i = 0; i < SIZE; ++i) {
368	<	assertEquals(i, ((Integer)q.poll(0, TimeUnit.MILLISECONDS)).intValue());
369	<	}
448	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
449	<	} catch (InterruptedException e){
450	<	unexpectedException();
451	<	}
364	>	public void testTimedPoll0() throws InterruptedException {
365	>	PriorityBlockingQueue q = populatedQueue(SIZE);
366	>	for (int i = 0; i < SIZE; ++i) {
367	>	assertEquals(i, q.poll(0, MILLISECONDS));
368	>	}
369	>	assertNull(q.poll(0, MILLISECONDS));
370		}
371
372		/**
373	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
373	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
374		*/
375	<	public void testTimedPoll() {
376	<	try {
377	<	PriorityBlockingQueue q = populatedQueue(SIZE);
378	<	for (int i = 0; i < SIZE; ++i) {
379	<	assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
380	<	}
381	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
382	<	} catch (InterruptedException e){
383	<	unexpectedException();
384	<	}
375	>	public void testTimedPoll() throws InterruptedException {
376	>	PriorityBlockingQueue<Integer> q = populatedQueue(SIZE);
377	>	for (int i = 0; i < SIZE; ++i) {
378	>	long startTime = System.nanoTime();
379	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
380	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
381	>	}
382	>	long startTime = System.nanoTime();
383	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
384	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
385	>	checkEmpty(q);
386		}
387
388		/**
389		* Interrupted timed poll throws InterruptedException instead of
390		* returning timeout status
391		*/
392	<	public void testInterruptedTimedPoll() {
393	<	Thread t = new Thread(new Runnable() {
394	<	public void run() {
395	<	try {
396	<	PriorityBlockingQueue q = populatedQueue(SIZE);
397	<	for (int i = 0; i < SIZE; ++i) {
398	<	threadAssertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
399	<	}
400	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
482	<	} catch (InterruptedException success){
483	<	}
484	<	}});
485	<	t.start();
486	<	try {
487	<	Thread.sleep(SHORT_DELAY_MS);
488	<	t.interrupt();
489	<	t.join();
490	<	}
491	<	catch (InterruptedException ie) {
492	<	unexpectedException();
493	<	}
494	<	}
495	<
496	<	/**
497	<	*  timed poll before a delayed offer fails; after offer succeeds;
498	<	*  on interruption throws
499	<	*/
500	<	public void testTimedPollWithOffer() {
501	<	final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
502	<	Thread t = new Thread(new Runnable() {
503	<	public void run() {
504	<	try {
505	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
506	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
507	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
508	<	threadShouldThrow();
509	<	} catch (InterruptedException success) { }
392	>	public void testInterruptedTimedPoll() throws InterruptedException {
393	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
394	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
395	>	Thread t = newStartedThread(new CheckedRunnable() {
396	>	public void realRun() throws InterruptedException {
397	>	for (int i = 0; i < SIZE; ++i) {
398	>	long t0 = System.nanoTime();
399	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
400	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
401		}
402	<	});
403	<	try {
404	<	t.start();
405	<	Thread.sleep(SMALL_DELAY_MS);
406	<	assertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
407	<	t.interrupt();
408	<	t.join();
409	<	} catch (Exception e){
410	<	unexpectedException();
520	<	}
521	<	}
402	>	long t0 = System.nanoTime();
403	>	aboutToWait.countDown();
404	>	try {
405	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
406	>	shouldThrow();
407	>	} catch (InterruptedException success) {
408	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
409	>	}
410	>	}});
411
412	+	aboutToWait.await();
413	+	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
414	+	t.interrupt();
415	+	awaitTermination(t, MEDIUM_DELAY_MS);
416	+	}
417
418		/**
419		* peek returns next element, or null if empty
#	Line 527 | Line 421 | public class PriorityBlockingQueueTest e
421		public void testPeek() {
422		PriorityBlockingQueue q = populatedQueue(SIZE);
423		for (int i = 0; i < SIZE; ++i) {
424	<	assertEquals(i, ((Integer)q.peek()).intValue());
425	<	q.poll();
424	>	assertEquals(i, q.peek());
425	>	assertEquals(i, q.poll());
426		assertTrue(q.peek() == null ||
427	<	i != ((Integer)q.peek()).intValue());
427	>	!q.peek().equals(i));
428		}
429	<	assertNull(q.peek());
429	>	assertNull(q.peek());
430		}
431
432		/**
#	Line 541 | Line 435 | public class PriorityBlockingQueueTest e
435		public void testElement() {
436		PriorityBlockingQueue q = populatedQueue(SIZE);
437		for (int i = 0; i < SIZE; ++i) {
438	<	assertEquals(i, ((Integer)q.element()).intValue());
439	<	q.poll();
438	>	assertEquals(i, q.element());
439	>	assertEquals(i, q.poll());
440		}
441		try {
442		q.element();
443		shouldThrow();
444	<	}
551	<	catch (NoSuchElementException success) {}
444	>	} catch (NoSuchElementException success) {}
445		}
446
447		/**
#	Line 557 | Line 450 | public class PriorityBlockingQueueTest e
450		public void testRemove() {
451		PriorityBlockingQueue q = populatedQueue(SIZE);
452		for (int i = 0; i < SIZE; ++i) {
453	<	assertEquals(i, ((Integer)q.remove()).intValue());
453	>	assertEquals(i, q.remove());
454		}
455		try {
456		q.remove();
457		shouldThrow();
458	<	} catch (NoSuchElementException success){
566	<	}
458	>	} catch (NoSuchElementException success) {}
459		}
460
461		/**
570	–	* remove(x) removes x and returns true if present
571	–	*/
572	–	public void testRemoveElement() {
573	–	PriorityBlockingQueue q = populatedQueue(SIZE);
574	–	for (int i = 1; i < SIZE; i+=2) {
575	–	assertTrue(q.remove(new Integer(i)));
576	–	}
577	–	for (int i = 0; i < SIZE; i+=2) {
578	–	assertTrue(q.remove(new Integer(i)));
579	–	assertFalse(q.remove(new Integer(i+1)));
580	–	}
581	–	assertTrue(q.isEmpty());
582	–	}
583	–
584	–	/**
462		* contains(x) reports true when elements added but not yet removed
463		*/
464		public void testContains() {
#	Line 601 | Line 478 | public class PriorityBlockingQueueTest e
478		q.clear();
479		assertTrue(q.isEmpty());
480		assertEquals(0, q.size());
481	<	assertEquals(NOCAP, q.remainingCapacity());
605	<	q.add(new Integer(1));
481	>	q.add(one);
482		assertFalse(q.isEmpty());
483	+	assertTrue(q.contains(one));
484		q.clear();
485		assertTrue(q.isEmpty());
486		}
#	Line 651 | Line 528 | public class PriorityBlockingQueueTest e
528		assertTrue(q.removeAll(p));
529		assertEquals(SIZE-i, q.size());
530		for (int j = 0; j < i; ++j) {
531	<	Integer I = (Integer)(p.remove());
532	<	assertFalse(q.contains(I));
531	>	Integer x = (Integer)(p.remove());
532	>	assertFalse(q.contains(x));
533		}
534		}
535		}
536
537		/**
538	<	*  toArray contains all elements
538	>	* toArray contains all elements
539		*/
540	<	public void testToArray() {
540	>	public void testToArray() throws InterruptedException {
541		PriorityBlockingQueue q = populatedQueue(SIZE);
542	<	Object[] o = q.toArray();
542	>	Object[] o = q.toArray();
543		Arrays.sort(o);
544	<	try {
545	<	for(int i = 0; i < o.length; i++)
669	<	assertEquals(o[i], q.take());
670	<	} catch (InterruptedException e){
671	<	unexpectedException();
672	<	}
544	>	for (int i = 0; i < o.length; i++)
545	>	assertSame(o[i], q.take());
546		}
547
548		/**
549		* toArray(a) contains all elements
550		*/
551	<	public void testToArray2() {
552	<	PriorityBlockingQueue q = populatedQueue(SIZE);
553	<	Integer[] ints = new Integer[SIZE];
554	<	ints = (Integer[])q.toArray(ints);
551	>	public void testToArray2() throws InterruptedException {
552	>	PriorityBlockingQueue<Integer> q = populatedQueue(SIZE);
553	>	Integer[] ints = new Integer[SIZE];
554	>	Integer[] array = q.toArray(ints);
555	>	assertSame(ints, array);
556		Arrays.sort(ints);
557	<	try {
558	<	for(int i = 0; i < ints.length; i++)
685	<	assertEquals(ints[i], q.take());
686	<	} catch (InterruptedException e){
687	<	unexpectedException();
688	<	}
557	>	for (int i = 0; i < ints.length; i++)
558	>	assertSame(ints[i], q.take());
559		}
560	<
560	>
561	>	/**
562	>	* toArray(incompatible array type) throws ArrayStoreException
563	>	*/
564	>	public void testToArray1_BadArg() {
565	>	PriorityBlockingQueue q = populatedQueue(SIZE);
566	>	try {
567	>	q.toArray(new String[10]);
568	>	shouldThrow();
569	>	} catch (ArrayStoreException success) {}
570	>	}
571	>
572		/**
573		* iterator iterates through all elements
574		*/
575		public void testIterator() {
576		PriorityBlockingQueue q = populatedQueue(SIZE);
577	<	int i = 0;
578	<	Iterator it = q.iterator();
579	<	while(it.hasNext()) {
577	>	Iterator it = q.iterator();
578	>	int i;
579	>	for (i = 0; it.hasNext(); i++)
580		assertTrue(q.contains(it.next()));
700	–	++i;
701	–	}
581		assertEquals(i, SIZE);
582	+	assertIteratorExhausted(it);
583	+	}
584	+
585	+	/**
586	+	* iterator of empty collection has no elements
587	+	*/
588	+	public void testEmptyIterator() {
589	+	assertIteratorExhausted(new PriorityBlockingQueue().iterator());
590		}
591
592		/**
593		* iterator.remove removes current element
594		*/
595	<	public void testIteratorRemove () {
595	>	public void testIteratorRemove() {
596		final PriorityBlockingQueue q = new PriorityBlockingQueue(3);
597		q.add(new Integer(2));
598		q.add(new Integer(1));
#	Line 721 | Line 608 | public class PriorityBlockingQueueTest e
608		assertFalse(it.hasNext());
609		}
610
724	–
611		/**
612		* toString contains toStrings of elements
613		*/
#	Line 729 | Line 615 | public class PriorityBlockingQueueTest e
615		PriorityBlockingQueue q = populatedQueue(SIZE);
616		String s = q.toString();
617		for (int i = 0; i < SIZE; ++i) {
618	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
618	>	assertTrue(s.contains(String.valueOf(i)));
619		}
620	<	}
620	>	}
621
622		/**
623	<	* offer transfers elements across Executor tasks
623	>	* timed poll transfers elements across Executor tasks
624		*/
625		public void testPollInExecutor() {
626		final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
627	+	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
628		ExecutorService executor = Executors.newFixedThreadPool(2);
629	<	executor.execute(new Runnable() {
630	<	public void run() {
631	<	threadAssertNull(q.poll());
632	<	try {
633	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
634	<	threadAssertTrue(q.isEmpty());
635	<	}
636	<	catch (InterruptedException e) {
637	<	threadUnexpectedException();
638	<	}
639	<	}
640	<	});
629	>	executor.execute(new CheckedRunnable() {
630	>	public void realRun() throws InterruptedException {
631	>	assertNull(q.poll());
632	>	threadsStarted.await();
633	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
634	>	checkEmpty(q);
635	>	}});
636	>
637	>	executor.execute(new CheckedRunnable() {
638	>	public void realRun() throws InterruptedException {
639	>	threadsStarted.await();
640	>	q.put(one);
641	>	}});
642
755	–	executor.execute(new Runnable() {
756	–	public void run() {
757	–	try {
758	–	Thread.sleep(SMALL_DELAY_MS);
759	–	q.put(new Integer(1));
760	–	}
761	–	catch (InterruptedException e) {
762	–	threadUnexpectedException();
763	–	}
764	–	}
765	–	});
766	–
643		joinPool(executor);
644		}
645
646		/**
647	<	* A deserialized serialized queue has same elements
647	>	* A deserialized serialized queue has same elements
648	>	*/
649	>	public void testSerialization() throws Exception {
650	>	Queue x = populatedQueue(SIZE);
651	>	Queue y = serialClone(x);
652	>
653	>	assertNotSame(x, y);
654	>	assertEquals(x.size(), y.size());
655	>	while (!x.isEmpty()) {
656	>	assertFalse(y.isEmpty());
657	>	assertEquals(x.remove(), y.remove());
658	>	}
659	>	assertTrue(y.isEmpty());
660	>	}
661	>
662	>	/**
663	>	* drainTo(c) empties queue into another collection c
664		*/
665	<	public void testSerialization() {
665	>	public void testDrainTo() {
666		PriorityBlockingQueue q = populatedQueue(SIZE);
667	<	try {
668	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
669	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
670	<	out.writeObject(q);
671	<	out.close();
672	<
673	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
674	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
675	<	PriorityBlockingQueue r = (PriorityBlockingQueue)in.readObject();
676	<	assertEquals(q.size(), r.size());
677	<	while (!q.isEmpty())
678	<	assertEquals(q.remove(), r.remove());
679	<	} catch(Exception e){
680	<	unexpectedException();
667	>	ArrayList l = new ArrayList();
668	>	q.drainTo(l);
669	>	assertEquals(0, q.size());
670	>	assertEquals(SIZE, l.size());
671	>	for (int i = 0; i < SIZE; ++i)
672	>	assertEquals(l.get(i), new Integer(i));
673	>	q.add(zero);
674	>	q.add(one);
675	>	assertFalse(q.isEmpty());
676	>	assertTrue(q.contains(zero));
677	>	assertTrue(q.contains(one));
678	>	l.clear();
679	>	q.drainTo(l);
680	>	assertEquals(0, q.size());
681	>	assertEquals(2, l.size());
682	>	for (int i = 0; i < 2; ++i)
683	>	assertEquals(l.get(i), new Integer(i));
684	>	}
685	>
686	>	/**
687	>	* drainTo empties queue
688	>	*/
689	>	public void testDrainToWithActivePut() throws InterruptedException {
690	>	final PriorityBlockingQueue q = populatedQueue(SIZE);
691	>	Thread t = new Thread(new CheckedRunnable() {
692	>	public void realRun() {
693	>	q.put(new Integer(SIZE+1));
694	>	}});
695	>
696	>	t.start();
697	>	ArrayList l = new ArrayList();
698	>	q.drainTo(l);
699	>	assertTrue(l.size() >= SIZE);
700	>	for (int i = 0; i < SIZE; ++i)
701	>	assertEquals(l.get(i), new Integer(i));
702	>	t.join();
703	>	assertTrue(q.size() + l.size() >= SIZE);
704	>	}
705	>
706	>	/**
707	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
708	>	*/
709	>	public void testDrainToN() {
710	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE*2);
711	>	for (int i = 0; i < SIZE + 2; ++i) {
712	>	for (int j = 0; j < SIZE; j++)
713	>	assertTrue(q.offer(new Integer(j)));
714	>	ArrayList l = new ArrayList();
715	>	q.drainTo(l, i);
716	>	int k = (i < SIZE) ? i : SIZE;
717	>	assertEquals(k, l.size());
718	>	assertEquals(SIZE-k, q.size());
719	>	for (int j = 0; j < k; ++j)
720	>	assertEquals(l.get(j), new Integer(j));
721	>	do {} while (q.poll() != null);
722	>	}
723	>	}
724	>
725	>	/**
726	>	* remove(null), contains(null) always return false
727	>	*/
728	>	public void testNeverContainsNull() {
729	>	Collection<?>[] qs = {
730	>	new PriorityBlockingQueue<Object>(),
731	>	populatedQueue(2),
732	>	};
733	>
734	>	for (Collection<?> q : qs) {
735	>	assertFalse(q.contains(null));
736	>	assertFalse(q.remove(null));
737		}
738		}
739

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