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

Comparing jsr166/src/test/tck/PriorityBlockingQueueTest.java (file contents):
Revision 1.3 by dl, Sun Sep 14 20:42:40 2003 UTC vs.
Revision 1.43 by dl, Fri May 6 11:22:07 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 static java.util.concurrent.TimeUnit.MILLISECONDS;
13		import java.io.*;
14
15		public class PriorityBlockingQueueTest extends JSR166TestCase {
16	+
17	+	public static class Generic extends BlockingQueueTest {
18	+	protected BlockingQueue emptyCollection() {
19	+	return new PriorityBlockingQueue();
20	+	}
21	+	}
22	+
23	+	public static class InitialCapacity extends BlockingQueueTest {
24	+	protected BlockingQueue emptyCollection() {
25	+	return new PriorityBlockingQueue(20);
26	+	}
27	+	}
28	+
29		public static void main(String[] args) {
30	<	junit.textui.TestRunner.run (suite());
30	>	junit.textui.TestRunner.run(suite());
31		}
32
33		public static Test suite() {
34	<	return new TestSuite(PriorityBlockingQueueTest.class);
34	>	return newTestSuite(PriorityBlockingQueueTest.class,
35	>	new Generic().testSuite(),
36	>	new InitialCapacity().testSuite());
37		}
38
39		private static final int NOCAP = Integer.MAX_VALUE;
40
41		/** Sample Comparator */
42	<	static class MyReverseComparator implements Comparator {
42	>	static class MyReverseComparator implements Comparator {
43		public int compare(Object x, Object y) {
44	<	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;
44	>	return ((Comparable)y).compareTo(x);
45		}
46		}
47
35	–
48		/**
49		* Create a queue of given size containing consecutive
50		* Integers 0 ... n.
51		*/
52	<	private PriorityBlockingQueue populatedQueue(int n) {
53	<	PriorityBlockingQueue q = new PriorityBlockingQueue(n);
52	>	private PriorityBlockingQueue<Integer> populatedQueue(int n) {
53	>	PriorityBlockingQueue<Integer> q =
54	>	new PriorityBlockingQueue<Integer>(n);
55		assertTrue(q.isEmpty());
56	<	for(int i = n-1; i >= 0; i-=2)
57	<	assertTrue(q.offer(new Integer(i)));
58	<	for(int i = (n & 1); i < n; i+=2)
59	<	assertTrue(q.offer(new Integer(i)));
56	>	for (int i = n-1; i >= 0; i-=2)
57	>	assertTrue(q.offer(new Integer(i)));
58	>	for (int i = (n & 1); i < n; i+=2)
59	>	assertTrue(q.offer(new Integer(i)));
60		assertFalse(q.isEmpty());
61		assertEquals(NOCAP, q.remainingCapacity());
62	<	assertEquals(n, q.size());
62	>	assertEquals(n, q.size());
63		return q;
64		}
65	<
66	<	public void testConstructor1(){
65	>
66	>	/**
67	>	* A new queue has unbounded capacity
68	>	*/
69	>	public void testConstructor1() {
70		assertEquals(NOCAP, new PriorityBlockingQueue(SIZE).remainingCapacity());
71		}
72
73	<	public void testConstructor2(){
73	>	/**
74	>	* Constructor throws IAE if capacity argument nonpositive
75	>	*/
76	>	public void testConstructor2() {
77		try {
78		PriorityBlockingQueue q = new PriorityBlockingQueue(0);
79	<	fail("Cannot make zero-sized");
80	<	}
62	<	catch (IllegalArgumentException success) {}
79	>	shouldThrow();
80	>	} catch (IllegalArgumentException success) {}
81		}
82
83	<	public void testConstructor3(){
84	<
83	>	/**
84	>	* Initializing from null Collection throws NPE
85	>	*/
86	>	public void testConstructor3() {
87		try {
88		PriorityBlockingQueue q = new PriorityBlockingQueue(null);
89	<	fail("Cannot make from null collection");
90	<	}
71	<	catch (NullPointerException success) {}
89	>	shouldThrow();
90	>	} catch (NullPointerException success) {}
91		}
92
93	<	public void testConstructor4(){
93	>	/**
94	>	* Initializing from Collection of null elements throws NPE
95	>	*/
96	>	public void testConstructor4() {
97		try {
98		Integer[] ints = new Integer[SIZE];
99		PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
100	<	fail("Cannot make with null elements");
101	<	}
80	<	catch (NullPointerException success) {}
100	>	shouldThrow();
101	>	} catch (NullPointerException success) {}
102		}
103
104	<	public void testConstructor5(){
104	>	/**
105	>	* Initializing from Collection with some null elements throws NPE
106	>	*/
107	>	public void testConstructor5() {
108		try {
109		Integer[] ints = new Integer[SIZE];
110		for (int i = 0; i < SIZE-1; ++i)
111		ints[i] = new Integer(i);
112		PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
113	<	fail("Cannot make with null elements");
114	<	}
91	<	catch (NullPointerException success) {}
113	>	shouldThrow();
114	>	} catch (NullPointerException success) {}
115		}
116
117	<	public void testConstructor6(){
118	<	try {
119	<	Integer[] ints = new Integer[SIZE];
120	<	for (int i = 0; i < SIZE; ++i)
121	<	ints[i] = new Integer(i);
122	<	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
123	<	for (int i = 0; i < SIZE; ++i)
124	<	assertEquals(ints[i], q.poll());
125	<	}
126	<	finally {}
117	>	/**
118	>	* Queue contains all elements of collection used to initialize
119	>	*/
120	>	public void testConstructor6() {
121	>	Integer[] ints = new Integer[SIZE];
122	>	for (int i = 0; i < SIZE; ++i)
123	>	ints[i] = new Integer(i);
124	>	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
125	>	for (int i = 0; i < SIZE; ++i)
126	>	assertEquals(ints[i], q.poll());
127		}
128
129	<	public void testConstructor7(){
130	<	try {
131	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE, new MyReverseComparator());
132	<	Integer[] ints = new Integer[SIZE];
133	<	for (int i = 0; i < SIZE; ++i)
134	<	ints[i] = new Integer(i);
135	<	q.addAll(Arrays.asList(ints));
136	<	for (int i = SIZE-1; i >= 0; --i)
137	<	assertEquals(ints[i], q.poll());
138	<	}
139	<	finally {}
129	>	/**
130	>	* The comparator used in constructor is used
131	>	*/
132	>	public void testConstructor7() {
133	>	MyReverseComparator cmp = new MyReverseComparator();
134	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE, cmp);
135	>	assertEquals(cmp, q.comparator());
136	>	Integer[] ints = new Integer[SIZE];
137	>	for (int i = 0; i < SIZE; ++i)
138	>	ints[i] = new Integer(i);
139	>	q.addAll(Arrays.asList(ints));
140	>	for (int i = SIZE-1; i >= 0; --i)
141	>	assertEquals(ints[i], q.poll());
142		}
143
144	+	/**
145	+	* isEmpty is true before add, false after
146	+	*/
147		public void testEmpty() {
148		PriorityBlockingQueue q = new PriorityBlockingQueue(2);
149		assertTrue(q.isEmpty());
150		assertEquals(NOCAP, q.remainingCapacity());
151	<	q.add(new Integer(1));
151	>	q.add(one);
152		assertFalse(q.isEmpty());
153	<	q.add(new Integer(2));
153	>	q.add(two);
154		q.remove();
155		q.remove();
156		assertTrue(q.isEmpty());
157		}
158
159	<	public void testRemainingCapacity(){
159	>	/**
160	>	* remainingCapacity does not change when elements added or removed,
161	>	* but size does
162	>	*/
163	>	public void testRemainingCapacity() {
164		PriorityBlockingQueue q = populatedQueue(SIZE);
165		for (int i = 0; i < SIZE; ++i) {
166		assertEquals(NOCAP, q.remainingCapacity());
#	Line 142 | Line 174 | public class PriorityBlockingQueueTest e
174		}
175		}
176
177	<	public void testOfferNull(){
178	<	try {
177	>	/**
178	>	* offer(null) throws NPE
179	>	*/
180	>	public void testOfferNull() {
181	>	try {
182		PriorityBlockingQueue q = new PriorityBlockingQueue(1);
183		q.offer(null);
184	<	fail("should throw NPE");
185	<	} catch (NullPointerException success) { }
184	>	shouldThrow();
185	>	} catch (NullPointerException success) {}
186	>	}
187	>
188	>	/**
189	>	* add(null) throws NPE
190	>	*/
191	>	public void testAddNull() {
192	>	try {
193	>	PriorityBlockingQueue q = new PriorityBlockingQueue(1);
194	>	q.add(null);
195	>	shouldThrow();
196	>	} catch (NullPointerException success) {}
197		}
198
199	+	/**
200	+	* Offer of comparable element succeeds
201	+	*/
202		public void testOffer() {
203		PriorityBlockingQueue q = new PriorityBlockingQueue(1);
204	<	assertTrue(q.offer(new Integer(0)));
205	<	assertTrue(q.offer(new Integer(1)));
204	>	assertTrue(q.offer(zero));
205	>	assertTrue(q.offer(one));
206		}
207
208	+	/**
209	+	* Offer of non-Comparable throws CCE
210	+	*/
211		public void testOfferNonComparable() {
212		try {
213		PriorityBlockingQueue q = new PriorityBlockingQueue(1);
214		q.offer(new Object());
215		q.offer(new Object());
216		q.offer(new Object());
217	<	fail("should throw CCE");
218	<	}
167	<	catch(ClassCastException success) {}
217	>	shouldThrow();
218	>	} catch (ClassCastException success) {}
219		}
220
221	<	public void testAdd(){
221	>	/**
222	>	* add of comparable succeeds
223	>	*/
224	>	public void testAdd() {
225		PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
226		for (int i = 0; i < SIZE; ++i) {
227		assertEquals(i, q.size());
#	Line 175 | Line 229 | public class PriorityBlockingQueueTest e
229		}
230		}
231
232	<	public void testAddAll1(){
232	>	/**
233	>	* addAll(null) throws NPE
234	>	*/
235	>	public void testAddAll1() {
236		try {
237		PriorityBlockingQueue q = new PriorityBlockingQueue(1);
238		q.addAll(null);
239	<	fail("Cannot add null collection");
240	<	}
241	<	catch (NullPointerException success) {}
239	>	shouldThrow();
240	>	} catch (NullPointerException success) {}
241	>	}
242	>
243	>	/**
244	>	* addAll(this) throws IAE
245	>	*/
246	>	public void testAddAllSelf() {
247	>	try {
248	>	PriorityBlockingQueue q = populatedQueue(SIZE);
249	>	q.addAll(q);
250	>	shouldThrow();
251	>	} catch (IllegalArgumentException success) {}
252		}
253	<	public void testAddAll2(){
253	>
254	>	/**
255	>	* addAll of a collection with null elements throws NPE
256	>	*/
257	>	public void testAddAll2() {
258		try {
259		PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
260		Integer[] ints = new Integer[SIZE];
261		q.addAll(Arrays.asList(ints));
262	<	fail("Cannot add null elements");
263	<	}
193	<	catch (NullPointerException success) {}
262	>	shouldThrow();
263	>	} catch (NullPointerException success) {}
264		}
265	<	public void testAddAll3(){
265	>
266	>	/**
267	>	* addAll of a collection with any null elements throws NPE after
268	>	* possibly adding some elements
269	>	*/
270	>	public void testAddAll3() {
271		try {
272		PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
273		Integer[] ints = new Integer[SIZE];
274		for (int i = 0; i < SIZE-1; ++i)
275		ints[i] = new Integer(i);
276		q.addAll(Arrays.asList(ints));
277	<	fail("Cannot add null elements");
278	<	}
204	<	catch (NullPointerException success) {}
277	>	shouldThrow();
278	>	} catch (NullPointerException success) {}
279		}
280
281	<	public void testAddAll5(){
282	<	try {
283	<	Integer[] empty = new Integer[0];
284	<	Integer[] ints = new Integer[SIZE];
285	<	for (int i = SIZE-1; i >= 0; --i)
286	<	ints[i] = new Integer(i);
287	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
288	<	assertFalse(q.addAll(Arrays.asList(empty)));
289	<	assertTrue(q.addAll(Arrays.asList(ints)));
290	<	for (int i = 0; i < SIZE; ++i)
291	<	assertEquals(ints[i], q.poll());
292	<	}
293	<	finally {}
281	>	/**
282	>	* Queue contains all elements of successful addAll
283	>	*/
284	>	public void testAddAll5() {
285	>	Integer[] empty = new Integer[0];
286	>	Integer[] ints = new Integer[SIZE];
287	>	for (int i = SIZE-1; i >= 0; --i)
288	>	ints[i] = new Integer(i);
289	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
290	>	assertFalse(q.addAll(Arrays.asList(empty)));
291	>	assertTrue(q.addAll(Arrays.asList(ints)));
292	>	for (int i = 0; i < SIZE; ++i)
293	>	assertEquals(ints[i], q.poll());
294		}
295
296	<	public void testPutNull() {
297	<	try {
296	>	/**
297	>	* put(null) throws NPE
298	>	*/
299	>	public void testPutNull() {
300	>	try {
301		PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
302		q.put(null);
303	<	fail("put should throw NPE");
304	<	}
228	<	catch (NullPointerException success){
229	<	}
230	<	}
231	<
232	<	public void testPut() {
233	<	try {
234	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
235	<	for (int i = 0; i < SIZE; ++i) {
236	<	Integer I = new Integer(i);
237	<	q.put(I);
238	<	assertTrue(q.contains(I));
239	<	}
240	<	assertEquals(SIZE, q.size());
241	<	}
242	<	finally {
243	<	}
303	>	shouldThrow();
304	>	} catch (NullPointerException success) {}
305		}
306
307	<	public void testPutWithTake() {
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));
255	<	++added;
256	<	q.put(new Integer(0));
257	<	++added;
258	<	q.put(new Integer(0));
259	<	++added;
260	<	threadAssertTrue(added == 4);
261	<	} finally {
262	<	}
263	<	}
264	<	});
265	<	try {
266	<	t.start();
267	<	Thread.sleep(SHORT_DELAY_MS);
268	<	q.take();
269	<	t.interrupt();
270	<	t.join();
271	<	} catch (Exception e){
272	<	fail("Unexpected exception");
307	>	/**
308	>	* all elements successfully put are contained
309	>	*/
310	>	public void testPut() {
311	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
312	>	for (int i = 0; i < SIZE; ++i) {
313	>	Integer I = new Integer(i);
314	>	q.put(I);
315	>	assertTrue(q.contains(I));
316		}
317	+	assertEquals(SIZE, q.size());
318		}
319
320	<	public void testTimedOffer() {
320	>	/**
321	>	* put doesn't block waiting for take
322	>	*/
323	>	public void testPutWithTake() throws InterruptedException {
324		final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
325	<	Thread t = new Thread(new Runnable() {
326	<	public void run(){
327	<	try {
328	<	q.put(new Integer(0));
329	<	q.put(new Integer(0));
330	<	threadAssertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
284	<	threadAssertTrue(q.offer(new Integer(0), LONG_DELAY_MS, TimeUnit.MILLISECONDS));
285	<	} finally { }
286	<	}
287	<	});
288	<
289	<	try {
290	<	t.start();
291	<	Thread.sleep(SMALL_DELAY_MS);
292	<	t.interrupt();
293	<	t.join();
294	<	} catch (Exception e){
295	<	fail("Unexpected exception");
296	<	}
297	<	}
325	>	final int size = 4;
326	>	Thread t = new Thread(new CheckedRunnable() {
327	>	public void realRun() {
328	>	for (int i = 0; i < size; i++)
329	>	q.put(new Integer(0));
330	>	}});
331
332	<	public void testTake(){
333	<	try {
334	<	PriorityBlockingQueue q = populatedQueue(SIZE);
335	<	for (int i = 0; i < SIZE; ++i) {
336	<	assertEquals(i, ((Integer)q.take()).intValue());
337	<	}
305	<	} catch (InterruptedException e){
306	<	fail("Unexpected exception");
307	<	}
332	>	t.start();
333	>	delay(SHORT_DELAY_MS);
334	>	assertEquals(q.size(), size);
335	>	q.take();
336	>	t.interrupt();
337	>	t.join();
338		}
339
340	<	public void testTakeFromEmpty() {
340	>	/**
341	>	* timed offer does not time out
342	>	*/
343	>	public void testTimedOffer() throws InterruptedException {
344		final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
345	<	Thread t = new Thread(new Runnable() {
346	<	public void run(){
347	<	try {
348	<	q.take();
349	<	threadFail("Should block");
350	<	} catch (InterruptedException success){ }
351	<	}
352	<	});
353	<	try {
354	<	t.start();
355	<	Thread.sleep(SHORT_DELAY_MS);
356	<	t.interrupt();
357	<	t.join();
358	<	} catch (Exception e){
359	<	fail("Unexpected exception");
345	>	Thread t = new Thread(new CheckedRunnable() {
346	>	public void realRun() {
347	>	q.put(new Integer(0));
348	>	q.put(new Integer(0));
349	>	assertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, MILLISECONDS));
350	>	assertTrue(q.offer(new Integer(0), LONG_DELAY_MS, MILLISECONDS));
351	>	}});
352	>
353	>	t.start();
354	>	delay(SMALL_DELAY_MS);
355	>	t.interrupt();
356	>	t.join();
357	>	}
358	>
359	>	/**
360	>	* take retrieves elements in priority order
361	>	*/
362	>	public void testTake() throws InterruptedException {
363	>	PriorityBlockingQueue q = populatedQueue(SIZE);
364	>	for (int i = 0; i < SIZE; ++i) {
365	>	assertEquals(i, q.take());
366		}
367		}
368
369	<	public void testBlockingTake(){
370	<	Thread t = new Thread(new Runnable() {
371	<	public void run() {
372	<	try {
373	<	PriorityBlockingQueue q = populatedQueue(SIZE);
374	<	for (int i = 0; i < SIZE; ++i) {
375	<	threadAssertEquals(i, ((Integer)q.take()).intValue());
376	<	}
377	<	q.take();
378	<	threadFail("take should block");
379	<	} catch (InterruptedException success){
380	<	}
381	<	}});
369	>	/**
370	>	* Take removes existing elements until empty, then blocks interruptibly
371	>	*/
372	>	public void testBlockingTake() throws InterruptedException {
373	>	final PriorityBlockingQueue q = populatedQueue(SIZE);
374	>	Thread t = new Thread(new CheckedRunnable() {
375	>	public void realRun() throws InterruptedException {
376	>	for (int i = 0; i < SIZE; ++i) {
377	>	assertEquals(i, q.take());
378	>	}
379	>	try {
380	>	q.take();
381	>	shouldThrow();
382	>	} catch (InterruptedException success) {}
383	>	}});
384	>
385		t.start();
386	<	try {
387	<	Thread.sleep(SHORT_DELAY_MS);
388	<	t.interrupt();
347	<	t.join();
348	<	}
349	<	catch (InterruptedException ie) {
350	<	fail("Unexpected exception");
351	<	}
386	>	delay(SHORT_DELAY_MS);
387	>	t.interrupt();
388	>	t.join();
389		}
390
391
392	<	public void testPoll(){
392	>	/**
393	>	* poll succeeds unless empty
394	>	*/
395	>	public void testPoll() {
396		PriorityBlockingQueue q = populatedQueue(SIZE);
397		for (int i = 0; i < SIZE; ++i) {
398	<	assertEquals(i, ((Integer)q.poll()).intValue());
398	>	assertEquals(i, q.poll());
399		}
400	<	assertNull(q.poll());
400	>	assertNull(q.poll());
401		}
402
403	<	public void testTimedPoll0() {
404	<	try {
405	<	PriorityBlockingQueue q = populatedQueue(SIZE);
406	<	for (int i = 0; i < SIZE; ++i) {
407	<	assertEquals(i, ((Integer)q.poll(0, TimeUnit.MILLISECONDS)).intValue());
408	<	}
409	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
410	<	} catch (InterruptedException e){
411	<	fail("Unexpected exception");
372	<	}
403	>	/**
404	>	* timed poll with zero timeout succeeds when non-empty, else times out
405	>	*/
406	>	public void testTimedPoll0() throws InterruptedException {
407	>	PriorityBlockingQueue q = populatedQueue(SIZE);
408	>	for (int i = 0; i < SIZE; ++i) {
409	>	assertEquals(i, q.poll(0, MILLISECONDS));
410	>	}
411	>	assertNull(q.poll(0, MILLISECONDS));
412		}
413
414	<	public void testTimedPoll() {
415	<	try {
416	<	PriorityBlockingQueue q = populatedQueue(SIZE);
417	<	for (int i = 0; i < SIZE; ++i) {
418	<	assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
419	<	}
420	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
382	<	} catch (InterruptedException e){
383	<	fail("Unexpected exception");
384	<	}
385	<	}
386	<
387	<	public void testInterruptedTimedPoll(){
388	<	Thread t = new Thread(new Runnable() {
389	<	public void run() {
390	<	try {
391	<	PriorityBlockingQueue q = populatedQueue(SIZE);
392	<	for (int i = 0; i < SIZE; ++i) {
393	<	threadAssertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
394	<	}
395	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
396	<	} catch (InterruptedException success){
397	<	}
398	<	}});
399	<	t.start();
400	<	try {
401	<	Thread.sleep(SHORT_DELAY_MS);
402	<	t.interrupt();
403	<	t.join();
404	<	}
405	<	catch (InterruptedException ie) {
406	<	fail("Unexpected exception");
414	>	/**
415	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
416	>	*/
417	>	public void testTimedPoll() throws InterruptedException {
418	>	PriorityBlockingQueue q = populatedQueue(SIZE);
419	>	for (int i = 0; i < SIZE; ++i) {
420	>	assertEquals(i, q.poll(SHORT_DELAY_MS, MILLISECONDS));
421		}
422	+	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
423		}
424
425	<	public void testTimedPollWithOffer(){
426	<	final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
427	<	Thread t = new Thread(new Runnable() {
428	<	public void run(){
429	<	try {
430	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
431	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
432	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
433	<	threadFail("Should block");
434	<	} catch (InterruptedException success) { }
425	>	/**
426	>	* Interrupted timed poll throws InterruptedException instead of
427	>	* returning timeout status
428	>	*/
429	>	public void testInterruptedTimedPoll() throws InterruptedException {
430	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
431	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
432	>	Thread t = newStartedThread(new CheckedRunnable() {
433	>	public void realRun() throws InterruptedException {
434	>	for (int i = 0; i < SIZE; ++i) {
435	>	long t0 = System.nanoTime();
436	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
437	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
438		}
439	<	});
440	<	try {
441	<	t.start();
442	<	Thread.sleep(SMALL_DELAY_MS);
443	<	assertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
444	<	t.interrupt();
445	<	t.join();
446	<	} catch (Exception e){
447	<	fail("Unexpected exception");
430	<	}
431	<	}
439	>	long t0 = System.nanoTime();
440	>	aboutToWait.countDown();
441	>	try {
442	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
443	>	shouldThrow();
444	>	} catch (InterruptedException success) {
445	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
446	>	}
447	>	}});
448
449	+	aboutToWait.await();
450	+	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
451	+	t.interrupt();
452	+	awaitTermination(t, MEDIUM_DELAY_MS);
453	+	}
454
455	<	public void testPeek(){
455	>	/**
456	>	* peek returns next element, or null if empty
457	>	*/
458	>	public void testPeek() {
459		PriorityBlockingQueue q = populatedQueue(SIZE);
460		for (int i = 0; i < SIZE; ++i) {
461	<	assertEquals(i, ((Integer)q.peek()).intValue());
462	<	q.poll();
461	>	assertEquals(i, q.peek());
462	>	assertEquals(i, q.poll());
463		assertTrue(q.peek() == null ||
464	<	i != ((Integer)q.peek()).intValue());
464	>	!q.peek().equals(i));
465		}
466	<	assertNull(q.peek());
466	>	assertNull(q.peek());
467		}
468
469	<	public void testElement(){
469	>	/**
470	>	* element returns next element, or throws NSEE if empty
471	>	*/
472	>	public void testElement() {
473		PriorityBlockingQueue q = populatedQueue(SIZE);
474		for (int i = 0; i < SIZE; ++i) {
475	<	assertEquals(i, ((Integer)q.element()).intValue());
476	<	q.poll();
475	>	assertEquals(i, q.element());
476	>	assertEquals(i, q.poll());
477		}
478		try {
479		q.element();
480	<	fail("no such element");
481	<	}
455	<	catch (NoSuchElementException success) {}
480	>	shouldThrow();
481	>	} catch (NoSuchElementException success) {}
482		}
483
484	<	public void testRemove(){
484	>	/**
485	>	* remove removes next element, or throws NSEE if empty
486	>	*/
487	>	public void testRemove() {
488		PriorityBlockingQueue q = populatedQueue(SIZE);
489		for (int i = 0; i < SIZE; ++i) {
490	<	assertEquals(i, ((Integer)q.remove()).intValue());
490	>	assertEquals(i, q.remove());
491		}
492		try {
493		q.remove();
494	<	fail("remove should throw");
495	<	} catch (NoSuchElementException success){
467	<	}
494	>	shouldThrow();
495	>	} catch (NoSuchElementException success) {}
496		}
497
498	<	public void testRemoveElement(){
498	>	/**
499	>	* remove(x) removes x and returns true if present
500	>	*/
501	>	public void testRemoveElement() {
502		PriorityBlockingQueue q = populatedQueue(SIZE);
503		for (int i = 1; i < SIZE; i+=2) {
504	<	assertTrue(q.remove(new Integer(i)));
504	>	assertTrue(q.contains(i));
505	>	assertTrue(q.remove(i));
506	>	assertFalse(q.contains(i));
507	>	assertTrue(q.contains(i-1));
508		}
509		for (int i = 0; i < SIZE; i+=2) {
510	<	assertTrue(q.remove(new Integer(i)));
511	<	assertFalse(q.remove(new Integer(i+1)));
510	>	assertTrue(q.contains(i));
511	>	assertTrue(q.remove(i));
512	>	assertFalse(q.contains(i));
513	>	assertFalse(q.remove(i+1));
514	>	assertFalse(q.contains(i+1));
515		}
516		assertTrue(q.isEmpty());
517		}
518	<
519	<	public void testContains(){
518	>
519	>	/**
520	>	* contains(x) reports true when elements added but not yet removed
521	>	*/
522	>	public void testContains() {
523		PriorityBlockingQueue q = populatedQueue(SIZE);
524		for (int i = 0; i < SIZE; ++i) {
525		assertTrue(q.contains(new Integer(i)));
#	Line 488 | Line 528 | public class PriorityBlockingQueueTest e
528		}
529		}
530
531	<	public void testClear(){
531	>	/**
532	>	* clear removes all elements
533	>	*/
534	>	public void testClear() {
535		PriorityBlockingQueue q = populatedQueue(SIZE);
536		q.clear();
537		assertTrue(q.isEmpty());
538		assertEquals(0, q.size());
539	<	assertEquals(NOCAP, q.remainingCapacity());
497	<	q.add(new Integer(1));
539	>	q.add(one);
540		assertFalse(q.isEmpty());
541	+	assertTrue(q.contains(one));
542		q.clear();
543		assertTrue(q.isEmpty());
544		}
545
546	<	public void testContainsAll(){
546	>	/**
547	>	* containsAll(c) is true when c contains a subset of elements
548	>	*/
549	>	public void testContainsAll() {
550		PriorityBlockingQueue q = populatedQueue(SIZE);
551		PriorityBlockingQueue p = new PriorityBlockingQueue(SIZE);
552		for (int i = 0; i < SIZE; ++i) {
#	Line 511 | Line 557 | public class PriorityBlockingQueueTest e
557		assertTrue(p.containsAll(q));
558		}
559
560	<	public void testRetainAll(){
560	>	/**
561	>	* retainAll(c) retains only those elements of c and reports true if changed
562	>	*/
563	>	public void testRetainAll() {
564		PriorityBlockingQueue q = populatedQueue(SIZE);
565		PriorityBlockingQueue p = populatedQueue(SIZE);
566		for (int i = 0; i < SIZE; ++i) {
#	Line 527 | Line 576 | public class PriorityBlockingQueueTest e
576		}
577		}
578
579	<	public void testRemoveAll(){
579	>	/**
580	>	* removeAll(c) removes only those elements of c and reports true if changed
581	>	*/
582	>	public void testRemoveAll() {
583		for (int i = 1; i < SIZE; ++i) {
584		PriorityBlockingQueue q = populatedQueue(SIZE);
585		PriorityBlockingQueue p = populatedQueue(i);
#	Line 540 | Line 592 | public class PriorityBlockingQueueTest e
592		}
593		}
594
595	<	public void testToArray(){
595	>	/**
596	>	* toArray contains all elements
597	>	*/
598	>	public void testToArray() throws InterruptedException {
599		PriorityBlockingQueue q = populatedQueue(SIZE);
600	<	Object[] o = q.toArray();
600	>	Object[] o = q.toArray();
601		Arrays.sort(o);
602	<	try {
603	<	for(int i = 0; i < o.length; i++)
549	<	assertEquals(o[i], q.take());
550	<	} catch (InterruptedException e){
551	<	fail("Unexpected exception");
552	<	}
602	>	for (int i = 0; i < o.length; i++)
603	>	assertSame(o[i], q.take());
604		}
605
606	<	public void testToArray2(){
607	<	PriorityBlockingQueue q = populatedQueue(SIZE);
608	<	Integer[] ints = new Integer[SIZE];
609	<	ints = (Integer[])q.toArray(ints);
606	>	/**
607	>	* toArray(a) contains all elements
608	>	*/
609	>	public void testToArray2() throws InterruptedException {
610	>	PriorityBlockingQueue<Integer> q = populatedQueue(SIZE);
611	>	Integer[] ints = new Integer[SIZE];
612	>	Integer[] array = q.toArray(ints);
613	>	assertSame(ints, array);
614		Arrays.sort(ints);
615	<	try {
616	<	for(int i = 0; i < ints.length; i++)
617	<	assertEquals(ints[i], q.take());
618	<	} catch (InterruptedException e){
619	<	fail("Unexpected exception");
620	<	}
615	>	for (int i = 0; i < ints.length; i++)
616	>	assertSame(ints[i], q.take());
617	>	}
618	>
619	>	/**
620	>	* toArray(null) throws NullPointerException
621	>	*/
622	>	public void testToArray_NullArg() {
623	>	PriorityBlockingQueue q = populatedQueue(SIZE);
624	>	try {
625	>	q.toArray(null);
626	>	shouldThrow();
627	>	} catch (NullPointerException success) {}
628	>	}
629	>
630	>	/**
631	>	* toArray(incompatible array type) throws ArrayStoreException
632	>	*/
633	>	public void testToArray1_BadArg() {
634	>	PriorityBlockingQueue q = populatedQueue(SIZE);
635	>	try {
636	>	q.toArray(new String[10]);
637	>	shouldThrow();
638	>	} catch (ArrayStoreException success) {}
639		}
640	<
641	<	public void testIterator(){
640	>
641	>	/**
642	>	* iterator iterates through all elements
643	>	*/
644	>	public void testIterator() {
645		PriorityBlockingQueue q = populatedQueue(SIZE);
646		int i = 0;
647	<	Iterator it = q.iterator();
648	<	while(it.hasNext()) {
647	>	Iterator it = q.iterator();
648	>	while (it.hasNext()) {
649		assertTrue(q.contains(it.next()));
650		++i;
651		}
652		assertEquals(i, SIZE);
653		}
654
655	<	public void testIteratorRemove () {
656	<
655	>	/**
656	>	* iterator.remove removes current element
657	>	*/
658	>	public void testIteratorRemove() {
659		final PriorityBlockingQueue q = new PriorityBlockingQueue(3);
582	–
660		q.add(new Integer(2));
661		q.add(new Integer(1));
662		q.add(new Integer(3));
#	Line 595 | Line 672 | public class PriorityBlockingQueueTest e
672		}
673
674
675	<	public void testToString(){
675	>	/**
676	>	* toString contains toStrings of elements
677	>	*/
678	>	public void testToString() {
679		PriorityBlockingQueue q = populatedQueue(SIZE);
680		String s = q.toString();
681		for (int i = 0; i < SIZE; ++i) {
682		assertTrue(s.indexOf(String.valueOf(i)) >= 0);
683		}
684	<	}
684	>	}
685
686	+	/**
687	+	* offer transfers elements across Executor tasks
688	+	*/
689		public void testPollInExecutor() {
607	–
690		final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
609	–
691		ExecutorService executor = Executors.newFixedThreadPool(2);
692	+	executor.execute(new CheckedRunnable() {
693	+	public void realRun() throws InterruptedException {
694	+	assertNull(q.poll());
695	+	assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
696	+	assertTrue(q.isEmpty());
697	+	}});
698	+
699	+	executor.execute(new CheckedRunnable() {
700	+	public void realRun() throws InterruptedException {
701	+	delay(SMALL_DELAY_MS);
702	+	q.put(one);
703	+	}});
704
612	–	executor.execute(new Runnable() {
613	–	public void run() {
614	–	threadAssertNull(q.poll());
615	–	try {
616	–	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
617	–	threadAssertTrue(q.isEmpty());
618	–	}
619	–	catch (InterruptedException e) {
620	–	threadFail("should not be interrupted");
621	–	}
622	–	}
623	–	});
624	–
625	–	executor.execute(new Runnable() {
626	–	public void run() {
627	–	try {
628	–	Thread.sleep(SMALL_DELAY_MS);
629	–	q.put(new Integer(1));
630	–	}
631	–	catch (InterruptedException e) {
632	–	threadFail("should not be interrupted");
633	–	}
634	–	}
635	–	});
636	–
705		joinPool(executor);
706	+	}
707	+
708	+	/**
709	+	* A deserialized serialized queue has same elements
710	+	*/
711	+	public void testSerialization() throws Exception {
712	+	PriorityBlockingQueue q = populatedQueue(SIZE);
713	+	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
714	+	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
715	+	out.writeObject(q);
716	+	out.close();
717	+
718	+	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
719	+	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
720	+	PriorityBlockingQueue r = (PriorityBlockingQueue)in.readObject();
721	+	assertEquals(q.size(), r.size());
722	+	while (!q.isEmpty())
723	+	assertEquals(q.remove(), r.remove());
724	+	}
725	+
726	+	/**
727	+	* drainTo(null) throws NPE
728	+	*/
729	+	public void testDrainToNull() {
730	+	PriorityBlockingQueue q = populatedQueue(SIZE);
731	+	try {
732	+	q.drainTo(null);
733	+	shouldThrow();
734	+	} catch (NullPointerException success) {}
735	+	}
736	+
737	+	/**
738	+	* drainTo(this) throws IAE
739	+	*/
740	+	public void testDrainToSelf() {
741	+	PriorityBlockingQueue q = populatedQueue(SIZE);
742	+	try {
743	+	q.drainTo(q);
744	+	shouldThrow();
745	+	} catch (IllegalArgumentException success) {}
746	+	}
747	+
748	+	/**
749	+	* drainTo(c) empties queue into another collection c
750	+	*/
751	+	public void testDrainTo() {
752	+	PriorityBlockingQueue q = populatedQueue(SIZE);
753	+	ArrayList l = new ArrayList();
754	+	q.drainTo(l);
755	+	assertEquals(q.size(), 0);
756	+	assertEquals(l.size(), SIZE);
757	+	for (int i = 0; i < SIZE; ++i)
758	+	assertEquals(l.get(i), new Integer(i));
759	+	q.add(zero);
760	+	q.add(one);
761	+	assertFalse(q.isEmpty());
762	+	assertTrue(q.contains(zero));
763	+	assertTrue(q.contains(one));
764	+	l.clear();
765	+	q.drainTo(l);
766	+	assertEquals(q.size(), 0);
767	+	assertEquals(l.size(), 2);
768	+	for (int i = 0; i < 2; ++i)
769	+	assertEquals(l.get(i), new Integer(i));
770	+	}
771
772	+	/**
773	+	* drainTo empties queue
774	+	*/
775	+	public void testDrainToWithActivePut() throws InterruptedException {
776	+	final PriorityBlockingQueue q = populatedQueue(SIZE);
777	+	Thread t = new Thread(new CheckedRunnable() {
778	+	public void realRun() {
779	+	q.put(new Integer(SIZE+1));
780	+	}});
781	+
782	+	t.start();
783	+	ArrayList l = new ArrayList();
784	+	q.drainTo(l);
785	+	assertTrue(l.size() >= SIZE);
786	+	for (int i = 0; i < SIZE; ++i)
787	+	assertEquals(l.get(i), new Integer(i));
788	+	t.join();
789	+	assertTrue(q.size() + l.size() >= SIZE);
790	+	}
791	+
792	+	/**
793	+	* drainTo(null, n) throws NPE
794	+	*/
795	+	public void testDrainToNullN() {
796	+	PriorityBlockingQueue q = populatedQueue(SIZE);
797	+	try {
798	+	q.drainTo(null, 0);
799	+	shouldThrow();
800	+	} catch (NullPointerException success) {}
801		}
802
803	<	public void testSerialization() {
803	>	/**
804	>	* drainTo(this, n) throws IAE
805	>	*/
806	>	public void testDrainToSelfN() {
807		PriorityBlockingQueue q = populatedQueue(SIZE);
808		try {
809	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
810	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
811	<	out.writeObject(q);
812	<	out.close();
813	<
814	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
815	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
816	<	PriorityBlockingQueue r = (PriorityBlockingQueue)in.readObject();
817	<	assertEquals(q.size(), r.size());
818	<	while (!q.isEmpty())
819	<	assertEquals(q.remove(), r.remove());
820	<	} catch(Exception e){
821	<	fail("unexpected exception");
809	>	q.drainTo(q, 0);
810	>	shouldThrow();
811	>	} catch (IllegalArgumentException success) {}
812	>	}
813	>
814	>	/**
815	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
816	>	*/
817	>	public void testDrainToN() {
818	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE*2);
819	>	for (int i = 0; i < SIZE + 2; ++i) {
820	>	for (int j = 0; j < SIZE; j++)
821	>	assertTrue(q.offer(new Integer(j)));
822	>	ArrayList l = new ArrayList();
823	>	q.drainTo(l, i);
824	>	int k = (i < SIZE) ? i : SIZE;
825	>	assertEquals(l.size(), k);
826	>	assertEquals(q.size(), SIZE-k);
827	>	for (int j = 0; j < k; ++j)
828	>	assertEquals(l.get(j), new Integer(j));
829	>	while (q.poll() != null) ;
830		}
831		}
832

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