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

Comparing jsr166/src/test/tck/PriorityBlockingQueueTest.java (file contents):
Revision 1.4 by dl, Sat Sep 20 00:31:57 2003 UTC vs.
Revision 1.39 by jsr166, Thu Nov 18 20:21:53 2010 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/licenses/publicdomain
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	<	MyReverseComparator cmp = new MyReverseComparator();
132	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE, cmp);
133	<	assertEquals(cmp, q.comparator());
134	<	Integer[] ints = new Integer[SIZE];
135	<	for (int i = 0; i < SIZE; ++i)
136	<	ints[i] = new Integer(i);
137	<	q.addAll(Arrays.asList(ints));
138	<	for (int i = SIZE-1; i >= 0; --i)
139	<	assertEquals(ints[i], q.poll());
140	<	}
141	<	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 144 | 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	<	}
169	<	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 177 | 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	<	}
186	<	catch (NullPointerException success) {}
239	>	shouldThrow();
240	>	} catch (NullPointerException success) {}
241		}
242	<	public void testAddAll2(){
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	>
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	<	}
195	<	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	<	}
206	<	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	+	/**
297	+	* put(null) throws NPE
298	+	*/
299		public void testPutNull() {
300	<	try {
300	>	try {
301		PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
302		q.put(null);
303	<	fail("put should throw NPE");
304	<	}
230	<	catch (NullPointerException success){
231	<	}
303	>	shouldThrow();
304	>	} catch (NullPointerException success) {}
305		}
306
307	+	/**
308	+	* all elements successfully put are contained
309	+	*/
310		public void testPut() {
311	<	try {
312	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
313	<	for (int i = 0; i < SIZE; ++i) {
314	<	Integer I = new Integer(i);
315	<	q.put(I);
240	<	assertTrue(q.contains(I));
241	<	}
242	<	assertEquals(SIZE, q.size());
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	<	finally {
245	<	}
317	>	assertEquals(SIZE, q.size());
318		}
319
320	<	public void testPutWithTake() {
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	<	int added = 0;
328	<	try {
329	<	q.put(new Integer(0));
330	<	++added;
331	<	q.put(new Integer(0));
332	<	++added;
333	<	q.put(new Integer(0));
334	<	++added;
335	<	q.put(new Integer(0));
336	<	++added;
337	<	threadAssertTrue(added == 4);
263	<	} finally {
264	<	}
265	<	}
266	<	});
267	<	try {
268	<	t.start();
269	<	Thread.sleep(SHORT_DELAY_MS);
270	<	q.take();
271	<	t.interrupt();
272	<	t.join();
273	<	} catch (Exception e){
274	<	fail("Unexpected exception");
275	<	}
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	>	t.start();
333	>	Thread.sleep(SHORT_DELAY_MS);
334	>	assertEquals(q.size(), size);
335	>	q.take();
336	>	t.interrupt();
337	>	t.join();
338		}
339
340	<	public void testTimedOffer() {
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.put(new Integer(0));
349	<	q.put(new Integer(0));
350	<	threadAssertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
351	<	threadAssertTrue(q.offer(new Integer(0), LONG_DELAY_MS, TimeUnit.MILLISECONDS));
287	<	} finally { }
288	<	}
289	<	});
290	<
291	<	try {
292	<	t.start();
293	<	Thread.sleep(SMALL_DELAY_MS);
294	<	t.interrupt();
295	<	t.join();
296	<	} catch (Exception e){
297	<	fail("Unexpected exception");
298	<	}
299	<	}
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	<	public void testTake(){
354	<	try {
355	<	PriorityBlockingQueue q = populatedQueue(SIZE);
356	<	for (int i = 0; i < SIZE; ++i) {
305	<	assertEquals(i, ((Integer)q.take()).intValue());
306	<	}
307	<	} catch (InterruptedException e){
308	<	fail("Unexpected exception");
309	<	}
353	>	t.start();
354	>	Thread.sleep(SMALL_DELAY_MS);
355	>	t.interrupt();
356	>	t.join();
357		}
358
359	<	public void testTakeFromEmpty() {
360	<	final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
361	<	Thread t = new Thread(new Runnable() {
362	<	public void run(){
363	<	try {
364	<	q.take();
365	<	threadFail("Should block");
319	<	} catch (InterruptedException success){ }
320	<	}
321	<	});
322	<	try {
323	<	t.start();
324	<	Thread.sleep(SHORT_DELAY_MS);
325	<	t.interrupt();
326	<	t.join();
327	<	} catch (Exception e){
328	<	fail("Unexpected exception");
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();
349	<	t.join();
350	<	}
351	<	catch (InterruptedException ie) {
352	<	fail("Unexpected exception");
353	<	}
386	>	Thread.sleep(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");
374	<	}
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));
384	<	} catch (InterruptedException e){
385	<	fail("Unexpected exception");
386	<	}
387	<	}
388	<
389	<	public void testInterruptedTimedPoll(){
390	<	Thread t = new Thread(new Runnable() {
391	<	public void run() {
392	<	try {
393	<	PriorityBlockingQueue q = populatedQueue(SIZE);
394	<	for (int i = 0; i < SIZE; ++i) {
395	<	threadAssertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
396	<	}
397	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
398	<	} catch (InterruptedException success){
399	<	}
400	<	}});
401	<	t.start();
402	<	try {
403	<	Thread.sleep(SHORT_DELAY_MS);
404	<	t.interrupt();
405	<	t.join();
406	<	}
407	<	catch (InterruptedException ie) {
408	<	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	>	Thread t = new Thread(new CheckedRunnable() {
431	>	public void realRun() throws InterruptedException {
432	>	PriorityBlockingQueue q = populatedQueue(SIZE);
433	>	for (int i = 0; i < SIZE; ++i) {
434	>	assertEquals(i, q.poll(SHORT_DELAY_MS, MILLISECONDS));
435		}
436	<	});
437	<	try {
438	<	t.start();
439	<	Thread.sleep(SMALL_DELAY_MS);
440	<	assertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
428	<	t.interrupt();
429	<	t.join();
430	<	} catch (Exception e){
431	<	fail("Unexpected exception");
432	<	}
433	<	}
436	>	try {
437	>	q.poll(SMALL_DELAY_MS, MILLISECONDS);
438	>	shouldThrow();
439	>	} catch (InterruptedException success) {}
440	>	}});
441
442	+	t.start();
443	+	Thread.sleep(SHORT_DELAY_MS);
444	+	t.interrupt();
445	+	t.join();
446	+	}
447
448	<	public void testPeek(){
448	>	/**
449	>	* peek returns next element, or null if empty
450	>	*/
451	>	public void testPeek() {
452		PriorityBlockingQueue q = populatedQueue(SIZE);
453		for (int i = 0; i < SIZE; ++i) {
454	<	assertEquals(i, ((Integer)q.peek()).intValue());
455	<	q.poll();
454	>	assertEquals(i, q.peek());
455	>	assertEquals(i, q.poll());
456		assertTrue(q.peek() == null ||
457	<	i != ((Integer)q.peek()).intValue());
457	>	!q.peek().equals(i));
458		}
459	<	assertNull(q.peek());
459	>	assertNull(q.peek());
460		}
461
462	<	public void testElement(){
462	>	/**
463	>	* element returns next element, or throws NSEE if empty
464	>	*/
465	>	public void testElement() {
466		PriorityBlockingQueue q = populatedQueue(SIZE);
467		for (int i = 0; i < SIZE; ++i) {
468	<	assertEquals(i, ((Integer)q.element()).intValue());
469	<	q.poll();
468	>	assertEquals(i, q.element());
469	>	assertEquals(i, q.poll());
470		}
471		try {
472		q.element();
473	<	fail("no such element");
474	<	}
457	<	catch (NoSuchElementException success) {}
473	>	shouldThrow();
474	>	} catch (NoSuchElementException success) {}
475		}
476
477	<	public void testRemove(){
477	>	/**
478	>	* remove removes next element, or throws NSEE if empty
479	>	*/
480	>	public void testRemove() {
481		PriorityBlockingQueue q = populatedQueue(SIZE);
482		for (int i = 0; i < SIZE; ++i) {
483	<	assertEquals(i, ((Integer)q.remove()).intValue());
483	>	assertEquals(i, q.remove());
484		}
485		try {
486		q.remove();
487	<	fail("remove should throw");
488	<	} catch (NoSuchElementException success){
469	<	}
487	>	shouldThrow();
488	>	} catch (NoSuchElementException success) {}
489		}
490
491	<	public void testRemoveElement(){
491	>	/**
492	>	* remove(x) removes x and returns true if present
493	>	*/
494	>	public void testRemoveElement() {
495		PriorityBlockingQueue q = populatedQueue(SIZE);
496		for (int i = 1; i < SIZE; i+=2) {
497	<	assertTrue(q.remove(new Integer(i)));
497	>	assertTrue(q.contains(i));
498	>	assertTrue(q.remove(i));
499	>	assertFalse(q.contains(i));
500	>	assertTrue(q.contains(i-1));
501		}
502		for (int i = 0; i < SIZE; i+=2) {
503	<	assertTrue(q.remove(new Integer(i)));
504	<	assertFalse(q.remove(new Integer(i+1)));
503	>	assertTrue(q.contains(i));
504	>	assertTrue(q.remove(i));
505	>	assertFalse(q.contains(i));
506	>	assertFalse(q.remove(i+1));
507	>	assertFalse(q.contains(i+1));
508		}
509		assertTrue(q.isEmpty());
510		}
511	<
512	<	public void testContains(){
511	>
512	>	/**
513	>	* contains(x) reports true when elements added but not yet removed
514	>	*/
515	>	public void testContains() {
516		PriorityBlockingQueue q = populatedQueue(SIZE);
517		for (int i = 0; i < SIZE; ++i) {
518		assertTrue(q.contains(new Integer(i)));
#	Line 490 | Line 521 | public class PriorityBlockingQueueTest e
521		}
522		}
523
524	<	public void testClear(){
524	>	/**
525	>	* clear removes all elements
526	>	*/
527	>	public void testClear() {
528		PriorityBlockingQueue q = populatedQueue(SIZE);
529		q.clear();
530		assertTrue(q.isEmpty());
531		assertEquals(0, q.size());
532	<	assertEquals(NOCAP, q.remainingCapacity());
499	<	q.add(new Integer(1));
532	>	q.add(one);
533		assertFalse(q.isEmpty());
534	+	assertTrue(q.contains(one));
535		q.clear();
536		assertTrue(q.isEmpty());
537		}
538
539	<	public void testContainsAll(){
539	>	/**
540	>	* containsAll(c) is true when c contains a subset of elements
541	>	*/
542	>	public void testContainsAll() {
543		PriorityBlockingQueue q = populatedQueue(SIZE);
544		PriorityBlockingQueue p = new PriorityBlockingQueue(SIZE);
545		for (int i = 0; i < SIZE; ++i) {
#	Line 513 | Line 550 | public class PriorityBlockingQueueTest e
550		assertTrue(p.containsAll(q));
551		}
552
553	<	public void testRetainAll(){
553	>	/**
554	>	* retainAll(c) retains only those elements of c and reports true if changed
555	>	*/
556	>	public void testRetainAll() {
557		PriorityBlockingQueue q = populatedQueue(SIZE);
558		PriorityBlockingQueue p = populatedQueue(SIZE);
559		for (int i = 0; i < SIZE; ++i) {
#	Line 529 | Line 569 | public class PriorityBlockingQueueTest e
569		}
570		}
571
572	<	public void testRemoveAll(){
572	>	/**
573	>	* removeAll(c) removes only those elements of c and reports true if changed
574	>	*/
575	>	public void testRemoveAll() {
576		for (int i = 1; i < SIZE; ++i) {
577		PriorityBlockingQueue q = populatedQueue(SIZE);
578		PriorityBlockingQueue p = populatedQueue(i);
#	Line 542 | Line 585 | public class PriorityBlockingQueueTest e
585		}
586		}
587
588	<	public void testToArray(){
588	>	/**
589	>	* toArray contains all elements
590	>	*/
591	>	public void testToArray() throws InterruptedException {
592		PriorityBlockingQueue q = populatedQueue(SIZE);
593	<	Object[] o = q.toArray();
593	>	Object[] o = q.toArray();
594		Arrays.sort(o);
595	<	try {
596	<	for(int i = 0; i < o.length; i++)
551	<	assertEquals(o[i], q.take());
552	<	} catch (InterruptedException e){
553	<	fail("Unexpected exception");
554	<	}
595	>	for (int i = 0; i < o.length; i++)
596	>	assertSame(o[i], q.take());
597		}
598
599	<	public void testToArray2(){
600	<	PriorityBlockingQueue q = populatedQueue(SIZE);
601	<	Integer[] ints = new Integer[SIZE];
602	<	ints = (Integer[])q.toArray(ints);
599	>	/**
600	>	* toArray(a) contains all elements
601	>	*/
602	>	public void testToArray2() throws InterruptedException {
603	>	PriorityBlockingQueue<Integer> q = populatedQueue(SIZE);
604	>	Integer[] ints = new Integer[SIZE];
605	>	Integer[] array = q.toArray(ints);
606	>	assertSame(ints, array);
607		Arrays.sort(ints);
608	<	try {
609	<	for(int i = 0; i < ints.length; i++)
610	<	assertEquals(ints[i], q.take());
611	<	} catch (InterruptedException e){
612	<	fail("Unexpected exception");
613	<	}
608	>	for (int i = 0; i < ints.length; i++)
609	>	assertSame(ints[i], q.take());
610	>	}
611	>
612	>	/**
613	>	* toArray(null) throws NullPointerException
614	>	*/
615	>	public void testToArray_NullArg() {
616	>	PriorityBlockingQueue q = populatedQueue(SIZE);
617	>	try {
618	>	q.toArray(null);
619	>	shouldThrow();
620	>	} catch (NullPointerException success) {}
621		}
622	<
623	<	public void testIterator(){
622	>
623	>	/**
624	>	* toArray(incompatible array type) throws ArrayStoreException
625	>	*/
626	>	public void testToArray1_BadArg() {
627	>	PriorityBlockingQueue q = populatedQueue(SIZE);
628	>	try {
629	>	q.toArray(new String[10]);
630	>	shouldThrow();
631	>	} catch (ArrayStoreException success) {}
632	>	}
633	>
634	>	/**
635	>	* iterator iterates through all elements
636	>	*/
637	>	public void testIterator() {
638		PriorityBlockingQueue q = populatedQueue(SIZE);
639		int i = 0;
640	<	Iterator it = q.iterator();
641	<	while(it.hasNext()) {
640	>	Iterator it = q.iterator();
641	>	while (it.hasNext()) {
642		assertTrue(q.contains(it.next()));
643		++i;
644		}
645		assertEquals(i, SIZE);
646		}
647
648	<	public void testIteratorRemove () {
649	<
648	>	/**
649	>	* iterator.remove removes current element
650	>	*/
651	>	public void testIteratorRemove() {
652		final PriorityBlockingQueue q = new PriorityBlockingQueue(3);
584	–
653		q.add(new Integer(2));
654		q.add(new Integer(1));
655		q.add(new Integer(3));
#	Line 597 | Line 665 | public class PriorityBlockingQueueTest e
665		}
666
667
668	<	public void testToString(){
668	>	/**
669	>	* toString contains toStrings of elements
670	>	*/
671	>	public void testToString() {
672		PriorityBlockingQueue q = populatedQueue(SIZE);
673		String s = q.toString();
674		for (int i = 0; i < SIZE; ++i) {
675		assertTrue(s.indexOf(String.valueOf(i)) >= 0);
676		}
677	<	}
677	>	}
678
679	+	/**
680	+	* offer transfers elements across Executor tasks
681	+	*/
682		public void testPollInExecutor() {
609	–
683		final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
611	–
684		ExecutorService executor = Executors.newFixedThreadPool(2);
685	+	executor.execute(new CheckedRunnable() {
686	+	public void realRun() throws InterruptedException {
687	+	assertNull(q.poll());
688	+	assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
689	+	assertTrue(q.isEmpty());
690	+	}});
691	+
692	+	executor.execute(new CheckedRunnable() {
693	+	public void realRun() throws InterruptedException {
694	+	Thread.sleep(SMALL_DELAY_MS);
695	+	q.put(one);
696	+	}});
697
614	–	executor.execute(new Runnable() {
615	–	public void run() {
616	–	threadAssertNull(q.poll());
617	–	try {
618	–	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
619	–	threadAssertTrue(q.isEmpty());
620	–	}
621	–	catch (InterruptedException e) {
622	–	threadFail("should not be interrupted");
623	–	}
624	–	}
625	–	});
626	–
627	–	executor.execute(new Runnable() {
628	–	public void run() {
629	–	try {
630	–	Thread.sleep(SMALL_DELAY_MS);
631	–	q.put(new Integer(1));
632	–	}
633	–	catch (InterruptedException e) {
634	–	threadFail("should not be interrupted");
635	–	}
636	–	}
637	–	});
638	–
698		joinPool(executor);
699	+	}
700
701	+	/**
702	+	* A deserialized serialized queue has same elements
703	+	*/
704	+	public void testSerialization() throws Exception {
705	+	PriorityBlockingQueue q = populatedQueue(SIZE);
706	+	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
707	+	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
708	+	out.writeObject(q);
709	+	out.close();
710	+
711	+	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
712	+	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
713	+	PriorityBlockingQueue r = (PriorityBlockingQueue)in.readObject();
714	+	assertEquals(q.size(), r.size());
715	+	while (!q.isEmpty())
716	+	assertEquals(q.remove(), r.remove());
717		}
718
719	<	public void testSerialization() {
719	>	/**
720	>	* drainTo(null) throws NPE
721	>	*/
722	>	public void testDrainToNull() {
723		PriorityBlockingQueue q = populatedQueue(SIZE);
724		try {
725	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
726	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
727	<	out.writeObject(q);
728	<	out.close();
729	<
730	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
731	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
732	<	PriorityBlockingQueue r = (PriorityBlockingQueue)in.readObject();
733	<	assertEquals(q.size(), r.size());
734	<	while (!q.isEmpty())
735	<	assertEquals(q.remove(), r.remove());
736	<	} catch(Exception e){
737	<	fail("unexpected exception");
725	>	q.drainTo(null);
726	>	shouldThrow();
727	>	} catch (NullPointerException success) {}
728	>	}
729	>
730	>	/**
731	>	* drainTo(this) throws IAE
732	>	*/
733	>	public void testDrainToSelf() {
734	>	PriorityBlockingQueue q = populatedQueue(SIZE);
735	>	try {
736	>	q.drainTo(q);
737	>	shouldThrow();
738	>	} catch (IllegalArgumentException success) {}
739	>	}
740	>
741	>	/**
742	>	* drainTo(c) empties queue into another collection c
743	>	*/
744	>	public void testDrainTo() {
745	>	PriorityBlockingQueue q = populatedQueue(SIZE);
746	>	ArrayList l = new ArrayList();
747	>	q.drainTo(l);
748	>	assertEquals(q.size(), 0);
749	>	assertEquals(l.size(), SIZE);
750	>	for (int i = 0; i < SIZE; ++i)
751	>	assertEquals(l.get(i), new Integer(i));
752	>	q.add(zero);
753	>	q.add(one);
754	>	assertFalse(q.isEmpty());
755	>	assertTrue(q.contains(zero));
756	>	assertTrue(q.contains(one));
757	>	l.clear();
758	>	q.drainTo(l);
759	>	assertEquals(q.size(), 0);
760	>	assertEquals(l.size(), 2);
761	>	for (int i = 0; i < 2; ++i)
762	>	assertEquals(l.get(i), new Integer(i));
763	>	}
764	>
765	>	/**
766	>	* drainTo empties queue
767	>	*/
768	>	public void testDrainToWithActivePut() throws InterruptedException {
769	>	final PriorityBlockingQueue q = populatedQueue(SIZE);
770	>	Thread t = new Thread(new CheckedRunnable() {
771	>	public void realRun() {
772	>	q.put(new Integer(SIZE+1));
773	>	}});
774	>
775	>	t.start();
776	>	ArrayList l = new ArrayList();
777	>	q.drainTo(l);
778	>	assertTrue(l.size() >= SIZE);
779	>	for (int i = 0; i < SIZE; ++i)
780	>	assertEquals(l.get(i), new Integer(i));
781	>	t.join();
782	>	assertTrue(q.size() + l.size() >= SIZE);
783	>	}
784	>
785	>	/**
786	>	* drainTo(null, n) throws NPE
787	>	*/
788	>	public void testDrainToNullN() {
789	>	PriorityBlockingQueue q = populatedQueue(SIZE);
790	>	try {
791	>	q.drainTo(null, 0);
792	>	shouldThrow();
793	>	} catch (NullPointerException success) {}
794	>	}
795	>
796	>	/**
797	>	* drainTo(this, n) throws IAE
798	>	*/
799	>	public void testDrainToSelfN() {
800	>	PriorityBlockingQueue q = populatedQueue(SIZE);
801	>	try {
802	>	q.drainTo(q, 0);
803	>	shouldThrow();
804	>	} catch (IllegalArgumentException success) {}
805	>	}
806	>
807	>	/**
808	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
809	>	*/
810	>	public void testDrainToN() {
811	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE*2);
812	>	for (int i = 0; i < SIZE + 2; ++i) {
813	>	for (int j = 0; j < SIZE; j++)
814	>	assertTrue(q.offer(new Integer(j)));
815	>	ArrayList l = new ArrayList();
816	>	q.drainTo(l, i);
817	>	int k = (i < SIZE) ? i : SIZE;
818	>	assertEquals(l.size(), k);
819	>	assertEquals(q.size(), SIZE-k);
820	>	for (int j = 0; j < k; ++j)
821	>	assertEquals(l.get(j), new Integer(j));
822	>	while (q.poll() != null) ;
823		}
824		}
825

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