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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 1.46 by jsr166, Tue May 31 16:16:24 2011 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.*;
10	>	import java.util.Arrays;
11	>	import java.util.ArrayList;
12	>	import java.util.Collection;
13	>	import java.util.Comparator;
14	>	import java.util.Iterator;
15	>	import java.util.NoSuchElementException;
16	>	import java.util.Queue;
17	>	import java.util.concurrent.PriorityBlockingQueue;
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 static java.util.concurrent.TimeUnit.MILLISECONDS;
23
24		public class PriorityBlockingQueueTest extends JSR166TestCase {
25	+
26	+	public static class Generic extends BlockingQueueTest {
27	+	protected BlockingQueue emptyCollection() {
28	+	return new PriorityBlockingQueue();
29	+	}
30	+	}
31	+
32	+	public static class InitialCapacity extends BlockingQueueTest {
33	+	protected BlockingQueue emptyCollection() {
34	+	return new PriorityBlockingQueue(20);
35	+	}
36	+	}
37	+
38		public static void main(String[] args) {
39	<	junit.textui.TestRunner.run (suite());
39	>	junit.textui.TestRunner.run(suite());
40		}
41
42		public static Test suite() {
43	<	return new TestSuite(PriorityBlockingQueueTest.class);
43	>	return newTestSuite(PriorityBlockingQueueTest.class,
44	>	new Generic().testSuite(),
45	>	new InitialCapacity().testSuite());
46		}
47
48		private static final int NOCAP = Integer.MAX_VALUE;
49
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();
28	<	int j = ((Integer)y).intValue();
29	<	if (i < j) return 1;
30	<	if (i > j) return -1;
31	<	return 0;
53	>	return ((Comparable)y).compareTo(x);
54		}
55		}
56
35	–
57		/**
58		* Create a 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());
71	>	assertEquals(n, q.size());
72		return q;
73		}
74	<
74	>
75		/**
76	<	*
76	>	* A new queue has unbounded capacity
77		*/
78		public void testConstructor1() {
79		assertEquals(NOCAP, new PriorityBlockingQueue(SIZE).remainingCapacity());
80		}
81
82		/**
83	<	*
83	>	* Constructor throws IAE if capacity argument nonpositive
84		*/
85		public void testConstructor2() {
86		try {
87	<	PriorityBlockingQueue q = new PriorityBlockingQueue(0);
87	>	new PriorityBlockingQueue(0);
88		shouldThrow();
89	<	}
68	<	catch (IllegalArgumentException success) {}
89	>	} catch (IllegalArgumentException success) {}
90		}
91
92		/**
93	<	*
93	>	* Initializing from null Collection throws NPE
94		*/
95		public void testConstructor3() {
75	–
96		try {
97	<	PriorityBlockingQueue q = new PriorityBlockingQueue(null);
97	>	new PriorityBlockingQueue(null);
98		shouldThrow();
99	<	}
80	<	catch (NullPointerException success) {}
99	>	} catch (NullPointerException success) {}
100		}
101
102		/**
103	<	*
103	>	* Initializing from Collection of null elements throws NPE
104		*/
105		public void testConstructor4() {
106	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
107		try {
108	<	Integer[] ints = new Integer[SIZE];
89	<	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
108	>	new PriorityBlockingQueue(elements);
109		shouldThrow();
110	<	}
92	<	catch (NullPointerException success) {}
110	>	} catch (NullPointerException success) {}
111		}
112
113		/**
114	<	*
114	>	* Initializing from Collection with some null elements throws NPE
115		*/
116		public void testConstructor5() {
117	+	Integer[] ints = new Integer[SIZE];
118	+	for (int i = 0; i < SIZE-1; ++i)
119	+	ints[i] = i;
120	+	Collection<Integer> elements = Arrays.asList(ints);
121		try {
122	<	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));
122	>	new PriorityBlockingQueue(elements);
123		shouldThrow();
124	<	}
106	<	catch (NullPointerException success) {}
124	>	} catch (NullPointerException success) {}
125		}
126
127		/**
128	<	*
128	>	* Queue contains all elements of collection used to initialize
129		*/
130		public void testConstructor6() {
131	<	try {
132	<	Integer[] ints = new Integer[SIZE];
133	<	for (int i = 0; i < SIZE; ++i)
134	<	ints[i] = new Integer(i);
135	<	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
136	<	for (int i = 0; i < SIZE; ++i)
119	<	assertEquals(ints[i], q.poll());
120	<	}
121	<	finally {}
131	>	Integer[] ints = new Integer[SIZE];
132	>	for (int i = 0; i < SIZE; ++i)
133	>	ints[i] = i;
134	>	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
135	>	for (int i = 0; i < SIZE; ++i)
136	>	assertEquals(ints[i], q.poll());
137		}
138
139		/**
140	<	*
140	>	* The comparator used in constructor is used
141		*/
142		public void testConstructor7() {
143	<	try {
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)
137	<	assertEquals(ints[i], q.poll());
138	<	}
139	<	finally {}
143	>	MyReverseComparator cmp = new MyReverseComparator();
144	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE, cmp);
145	>	assertEquals(cmp, q.comparator());
146	>	Integer[] ints = new Integer[SIZE];
147	>	for (int i = 0; i < SIZE; ++i)
148	>	ints[i] = new Integer(i);
149	>	q.addAll(Arrays.asList(ints));
150	>	for (int i = SIZE-1; i >= 0; --i)
151	>	assertEquals(ints[i], q.poll());
152		}
153
154		/**
155	<	*
155	>	* isEmpty is true before add, false after
156		*/
157		public void testEmpty() {
158		PriorityBlockingQueue q = new PriorityBlockingQueue(2);
159		assertTrue(q.isEmpty());
160		assertEquals(NOCAP, q.remainingCapacity());
161	<	q.add(new Integer(1));
161	>	q.add(one);
162		assertFalse(q.isEmpty());
163	<	q.add(new Integer(2));
163	>	q.add(two);
164		q.remove();
165		q.remove();
166		assertTrue(q.isEmpty());
167		}
168
169		/**
170	<	*
170	>	* remainingCapacity does not change when elements added or removed,
171	>	* but size does
172		*/
173		public void testRemainingCapacity() {
174		PriorityBlockingQueue q = populatedQueue(SIZE);
#	Line 172 | Line 185 | public class PriorityBlockingQueueTest e
185		}
186
187		/**
188	<	*
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	<	*
188	>	* Offer of comparable element succeeds
189		*/
190		public void testOffer() {
191		PriorityBlockingQueue q = new PriorityBlockingQueue(1);
192	<	assertTrue(q.offer(new Integer(0)));
193	<	assertTrue(q.offer(new Integer(1)));
192	>	assertTrue(q.offer(zero));
193	>	assertTrue(q.offer(one));
194		}
195
196		/**
197	<	*
197	>	* Offer of non-Comparable throws CCE
198		*/
199		public void testOfferNonComparable() {
200		try {
#	Line 201 | Line 203 | public class PriorityBlockingQueueTest e
203		q.offer(new Object());
204		q.offer(new Object());
205		shouldThrow();
206	<	}
205	<	catch(ClassCastException success) {}
206	>	} catch (ClassCastException success) {}
207		}
208
209		/**
210	<	*
210	>	* add of comparable succeeds
211		*/
212		public void testAdd() {
213		PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
#	Line 217 | Line 218 | public class PriorityBlockingQueueTest e
218		}
219
220		/**
221	<	*
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);
226	<	shouldThrow();
227	<	}
228	<	catch (NullPointerException success) {}
229	<	}
230	<	/**
231	<	*
232	<	*/
233	<	public void testAddAll2() {
234	<	try {
235	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
236	<	Integer[] ints = new Integer[SIZE];
237	<	q.addAll(Arrays.asList(ints));
225	>	PriorityBlockingQueue q = populatedQueue(SIZE);
226	>	q.addAll(q);
227		shouldThrow();
228	<	}
240	<	catch (NullPointerException success) {}
228	>	} catch (IllegalArgumentException success) {}
229		}
230	+
231		/**
232	<	*
232	>	* addAll of a collection with any null elements throws NPE after
233	>	* possibly adding some elements
234		*/
235		public void testAddAll3() {
236		try {
#	Line 250 | Line 240 | public class PriorityBlockingQueueTest e
240		ints[i] = new Integer(i);
241		q.addAll(Arrays.asList(ints));
242		shouldThrow();
243	<	}
254	<	catch (NullPointerException success) {}
243	>	} catch (NullPointerException success) {}
244		}
245
246		/**
247	<	*
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)
270	<	assertEquals(ints[i], q.poll());
271	<	}
272	<	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		/**
262	<	*
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	<	*
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);
297	<	assertTrue(q.contains(I));
298	<	}
299	<	assertEquals(SIZE, q.size());
300	<	}
301	<	finally {
264	>	public void testPut() {
265	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
266	>	for (int i = 0; i < SIZE; ++i) {
267	>	Integer I = new Integer(i);
268	>	q.put(I);
269	>	assertTrue(q.contains(I));
270		}
271	+	assertEquals(SIZE, q.size());
272		}
273
274		/**
275	<	*
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;
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	<	}
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	<	*
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));
303	<	} finally { }
304	<	}
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	<	}
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	>	awaitTermination(t);
305		}
306
307		/**
308	<	*
308	>	* take retrieves elements in priority order
309		*/
310	<	public void testTake() {
311	<	try {
312	<	PriorityBlockingQueue q = populatedQueue(SIZE);
313	<	for (int i = 0; i < SIZE; ++i) {
314	<	assertEquals(i, ((Integer)q.take()).intValue());
372	<	}
373	<	} catch (InterruptedException e){
374	<	unexpectedException();
375	<	}
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	<	*
318	>	* Take removes existing elements until empty, then blocks interruptibly
319		*/
320	<	public void testTakeFromEmpty() {
321	<	final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
322	<	Thread t = new Thread(new Runnable() {
323	<	public void run() {
324	<	try {
325	<	q.take();
326	<	threadShouldThrow();
388	<	} catch (InterruptedException success){ }
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		}
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	–	}
328
329	<	/**
330	<	*
331	<	*/
332	<	public void testBlockingTake() {
333	<	Thread t = new Thread(new Runnable() {
334	<	public void run() {
335	<	try {
336	<	PriorityBlockingQueue q = populatedQueue(SIZE);
337	<	for (int i = 0; i < SIZE; ++i) {
338	<	threadAssertEquals(i, ((Integer)q.take()).intValue());
339	<	}
340	<	q.take();
341	<	threadShouldThrow();
342	<	} 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	<	}
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	<	*
351	>	* poll succeeds unless empty
352		*/
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	<	*
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	<	}
449	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
450	<	} catch (InterruptedException e){
451	<	unexpectedException();
452	<	}
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	<	*
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	<	}
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();
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	<	*
389	>	* Interrupted timed poll throws InterruptedException instead of
390	>	* returning timeout status
391		*/
392	<	public void testTimedPollWithOffer() {
393	<	final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
394	<	Thread t = new Thread(new Runnable() {
395	<	public void run() {
396	<	try {
397	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
398	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
399	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
400	<	threadShouldThrow();
508	<	} 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();
519	<	}
520	<	}
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	<	*
419	>	* peek returns next element, or null if empty
420		*/
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		/**
433	<	*
433	>	* element returns next element, or throws NSEE if empty
434		*/
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	<	}
550	<	catch (NoSuchElementException success) {}
444	>	} catch (NoSuchElementException success) {}
445		}
446
447		/**
448	<	*
448	>	* remove removes next element, or throws NSEE if empty
449		*/
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){
565	<	}
458	>	} catch (NoSuchElementException success) {}
459		}
460
461		/**
462	<	*
462	>	* remove(x) removes x and returns true if present
463		*/
464		public void testRemoveElement() {
465		PriorityBlockingQueue q = populatedQueue(SIZE);
466		for (int i = 1; i < SIZE; i+=2) {
467	<	assertTrue(q.remove(new Integer(i)));
467	>	assertTrue(q.contains(i));
468	>	assertTrue(q.remove(i));
469	>	assertFalse(q.contains(i));
470	>	assertTrue(q.contains(i-1));
471		}
472		for (int i = 0; i < SIZE; i+=2) {
473	<	assertTrue(q.remove(new Integer(i)));
474	<	assertFalse(q.remove(new Integer(i+1)));
473	>	assertTrue(q.contains(i));
474	>	assertTrue(q.remove(i));
475	>	assertFalse(q.contains(i));
476	>	assertFalse(q.remove(i+1));
477	>	assertFalse(q.contains(i+1));
478		}
479		assertTrue(q.isEmpty());
480		}
481	<
481	>
482		/**
483	<	*
483	>	* contains(x) reports true when elements added but not yet removed
484		*/
485		public void testContains() {
486		PriorityBlockingQueue q = populatedQueue(SIZE);
#	Line 593 | Line 492 | public class PriorityBlockingQueueTest e
492		}
493
494		/**
495	<	*
495	>	* clear removes all elements
496		*/
497		public void testClear() {
498		PriorityBlockingQueue q = populatedQueue(SIZE);
499		q.clear();
500		assertTrue(q.isEmpty());
501		assertEquals(0, q.size());
502	<	assertEquals(NOCAP, q.remainingCapacity());
604	<	q.add(new Integer(1));
502	>	q.add(one);
503		assertFalse(q.isEmpty());
504	+	assertTrue(q.contains(one));
505		q.clear();
506		assertTrue(q.isEmpty());
507		}
508
509		/**
510	<	*
510	>	* containsAll(c) is true when c contains a subset of elements
511		*/
512		public void testContainsAll() {
513		PriorityBlockingQueue q = populatedQueue(SIZE);
#	Line 622 | Line 521 | public class PriorityBlockingQueueTest e
521		}
522
523		/**
524	<	*
524	>	* retainAll(c) retains only those elements of c and reports true if changed
525		*/
526		public void testRetainAll() {
527		PriorityBlockingQueue q = populatedQueue(SIZE);
#	Line 641 | Line 540 | public class PriorityBlockingQueueTest e
540		}
541
542		/**
543	<	*
543	>	* removeAll(c) removes only those elements of c and reports true if changed
544		*/
545		public void testRemoveAll() {
546		for (int i = 1; i < SIZE; ++i) {
#	Line 657 | Line 556 | public class PriorityBlockingQueueTest e
556		}
557
558		/**
559	<	*
559	>	* toArray contains all elements
560		*/
561	<	public void testToArray() {
561	>	public void testToArray() throws InterruptedException {
562		PriorityBlockingQueue q = populatedQueue(SIZE);
563	<	Object[] o = q.toArray();
563	>	Object[] o = q.toArray();
564		Arrays.sort(o);
565	<	try {
566	<	for(int i = 0; i < o.length; i++)
668	<	assertEquals(o[i], q.take());
669	<	} catch (InterruptedException e){
670	<	unexpectedException();
671	<	}
565	>	for (int i = 0; i < o.length; i++)
566	>	assertSame(o[i], q.take());
567		}
568
569		/**
570	<	*
570	>	* toArray(a) contains all elements
571		*/
572	<	public void testToArray2() {
573	<	PriorityBlockingQueue q = populatedQueue(SIZE);
574	<	Integer[] ints = new Integer[SIZE];
575	<	ints = (Integer[])q.toArray(ints);
572	>	public void testToArray2() throws InterruptedException {
573	>	PriorityBlockingQueue<Integer> q = populatedQueue(SIZE);
574	>	Integer[] ints = new Integer[SIZE];
575	>	Integer[] array = q.toArray(ints);
576	>	assertSame(ints, array);
577		Arrays.sort(ints);
578	<	try {
579	<	for(int i = 0; i < ints.length; i++)
580	<	assertEquals(ints[i], q.take());
581	<	} catch (InterruptedException e){
582	<	unexpectedException();
583	<	}
578	>	for (int i = 0; i < ints.length; i++)
579	>	assertSame(ints[i], q.take());
580	>	}
581	>
582	>	/**
583	>	* toArray(incompatible array type) throws ArrayStoreException
584	>	*/
585	>	public void testToArray1_BadArg() {
586	>	PriorityBlockingQueue q = populatedQueue(SIZE);
587	>	try {
588	>	q.toArray(new String[10]);
589	>	shouldThrow();
590	>	} catch (ArrayStoreException success) {}
591		}
592	<
592	>
593		/**
594	<	*
594	>	* iterator iterates through all elements
595		*/
596		public void testIterator() {
597		PriorityBlockingQueue q = populatedQueue(SIZE);
598		int i = 0;
599	<	Iterator it = q.iterator();
600	<	while(it.hasNext()) {
599	>	Iterator it = q.iterator();
600	>	while (it.hasNext()) {
601		assertTrue(q.contains(it.next()));
602		++i;
603		}
#	Line 702 | Line 605 | public class PriorityBlockingQueueTest e
605		}
606
607		/**
608	<	*
608	>	* iterator.remove removes current element
609		*/
610	<	public void testIteratorRemove () {
610	>	public void testIteratorRemove() {
611		final PriorityBlockingQueue q = new PriorityBlockingQueue(3);
612		q.add(new Integer(2));
613		q.add(new Integer(1));
#	Line 720 | Line 623 | public class PriorityBlockingQueueTest e
623		assertFalse(it.hasNext());
624		}
625
723	–
626		/**
627	<	*
627	>	* toString contains toStrings of elements
628		*/
629		public void testToString() {
630		PriorityBlockingQueue q = populatedQueue(SIZE);
631		String s = q.toString();
632		for (int i = 0; i < SIZE; ++i) {
633	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
633	>	assertTrue(s.contains(String.valueOf(i)));
634		}
635	<	}
635	>	}
636
637		/**
638	<	*
638	>	* timed poll transfers elements across Executor tasks
639		*/
640		public void testPollInExecutor() {
739	–
641		final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
642	<
642	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
643		ExecutorService executor = Executors.newFixedThreadPool(2);
644	+	executor.execute(new CheckedRunnable() {
645	+	public void realRun() throws InterruptedException {
646	+	assertNull(q.poll());
647	+	threadsStarted.await();
648	+	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
649	+	checkEmpty(q);
650	+	}});
651	+
652	+	executor.execute(new CheckedRunnable() {
653	+	public void realRun() throws InterruptedException {
654	+	threadsStarted.await();
655	+	q.put(one);
656	+	}});
657
744	–	executor.execute(new Runnable() {
745	–	public void run() {
746	–	threadAssertNull(q.poll());
747	–	try {
748	–	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
749	–	threadAssertTrue(q.isEmpty());
750	–	}
751	–	catch (InterruptedException e) {
752	–	threadUnexpectedException();
753	–	}
754	–	}
755	–	});
756	–
757	–	executor.execute(new Runnable() {
758	–	public void run() {
759	–	try {
760	–	Thread.sleep(SMALL_DELAY_MS);
761	–	q.put(new Integer(1));
762	–	}
763	–	catch (InterruptedException e) {
764	–	threadUnexpectedException();
765	–	}
766	–	}
767	–	});
768	–
658		joinPool(executor);
659	+	}
660
661	+	/**
662	+	* A deserialized serialized queue has same elements
663	+	*/
664	+	public void testSerialization() throws Exception {
665	+	Queue x = populatedQueue(SIZE);
666	+	Queue y = serialClone(x);
667	+
668	+	assertTrue(x != y);
669	+	assertEquals(x.size(), y.size());
670	+	while (!x.isEmpty()) {
671	+	assertFalse(y.isEmpty());
672	+	assertEquals(x.remove(), y.remove());
673	+	}
674	+	assertTrue(y.isEmpty());
675		}
676
677		/**
678	<	*
678	>	* drainTo(c) empties queue into another collection c
679		*/
680	<	public void testSerialization() {
680	>	public void testDrainTo() {
681		PriorityBlockingQueue q = populatedQueue(SIZE);
682	<	try {
683	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
684	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
685	<	out.writeObject(q);
686	<	out.close();
687	<
688	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
689	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
690	<	PriorityBlockingQueue r = (PriorityBlockingQueue)in.readObject();
691	<	assertEquals(q.size(), r.size());
692	<	while (!q.isEmpty())
693	<	assertEquals(q.remove(), r.remove());
694	<	} catch(Exception e){
695	<	unexpectedException();
682	>	ArrayList l = new ArrayList();
683	>	q.drainTo(l);
684	>	assertEquals(q.size(), 0);
685	>	assertEquals(l.size(), SIZE);
686	>	for (int i = 0; i < SIZE; ++i)
687	>	assertEquals(l.get(i), new Integer(i));
688	>	q.add(zero);
689	>	q.add(one);
690	>	assertFalse(q.isEmpty());
691	>	assertTrue(q.contains(zero));
692	>	assertTrue(q.contains(one));
693	>	l.clear();
694	>	q.drainTo(l);
695	>	assertEquals(q.size(), 0);
696	>	assertEquals(l.size(), 2);
697	>	for (int i = 0; i < 2; ++i)
698	>	assertEquals(l.get(i), new Integer(i));
699	>	}
700	>
701	>	/**
702	>	* drainTo empties queue
703	>	*/
704	>	public void testDrainToWithActivePut() throws InterruptedException {
705	>	final PriorityBlockingQueue q = populatedQueue(SIZE);
706	>	Thread t = new Thread(new CheckedRunnable() {
707	>	public void realRun() {
708	>	q.put(new Integer(SIZE+1));
709	>	}});
710	>
711	>	t.start();
712	>	ArrayList l = new ArrayList();
713	>	q.drainTo(l);
714	>	assertTrue(l.size() >= SIZE);
715	>	for (int i = 0; i < SIZE; ++i)
716	>	assertEquals(l.get(i), new Integer(i));
717	>	t.join();
718	>	assertTrue(q.size() + l.size() >= SIZE);
719	>	}
720	>
721	>	/**
722	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
723	>	*/
724	>	public void testDrainToN() {
725	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE*2);
726	>	for (int i = 0; i < SIZE + 2; ++i) {
727	>	for (int j = 0; j < SIZE; j++)
728	>	assertTrue(q.offer(new Integer(j)));
729	>	ArrayList l = new ArrayList();
730	>	q.drainTo(l, i);
731	>	int k = (i < SIZE) ? i : SIZE;
732	>	assertEquals(l.size(), k);
733	>	assertEquals(q.size(), SIZE-k);
734	>	for (int j = 0; j < k; ++j)
735	>	assertEquals(l.get(j), new Integer(j));
736	>	while (q.poll() != null) ;
737		}
738		}
739

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