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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 1.66 by jsr166, Tue Oct 6 00:03:55 2015 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
2	>	* Written by Doug Lea with assistance from members of JCP JSR-166
3	>	* Expert Group and released to the public domain, as explained at
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.*;
11	<	import java.util.concurrent.*;
12	<	import java.io.*;
9	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	>
11	>	import java.util.ArrayList;
12	>	import java.util.Arrays;
13	>	import java.util.Collection;
14	>	import java.util.Comparator;
15	>	import java.util.Iterator;
16	>	import java.util.NoSuchElementException;
17	>	import java.util.Queue;
18	>	import java.util.concurrent.BlockingQueue;
19	>	import java.util.concurrent.CountDownLatch;
20	>	import java.util.concurrent.Executors;
21	>	import java.util.concurrent.ExecutorService;
22	>	import java.util.concurrent.PriorityBlockingQueue;
23	>
24	>	import junit.framework.Test;
25
26		public class PriorityBlockingQueueTest extends JSR166TestCase {
27	+
28	+	public static class Generic extends BlockingQueueTest {
29	+	protected BlockingQueue emptyCollection() {
30	+	return new PriorityBlockingQueue();
31	+	}
32	+	}
33	+
34	+	public static class InitialCapacity extends BlockingQueueTest {
35	+	protected BlockingQueue emptyCollection() {
36	+	return new PriorityBlockingQueue(SIZE);
37	+	}
38	+	}
39	+
40		public static void main(String[] args) {
41	<	junit.textui.TestRunner.run (suite());
41	>	main(suite(), args);
42		}
43
44		public static Test suite() {
45	<	return new TestSuite(PriorityBlockingQueueTest.class);
45	>	return newTestSuite(PriorityBlockingQueueTest.class,
46	>	new Generic().testSuite(),
47	>	new InitialCapacity().testSuite());
48		}
49
22	–	private static final int NOCAP = Integer.MAX_VALUE;
23	–
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
58	>	* Returns a new queue of given size containing consecutive
59		* Integers 0 ... n.
60		*/
61	<	private PriorityBlockingQueue populatedQueue(int n) {
62	<	PriorityBlockingQueue q = new PriorityBlockingQueue(n);
61	>	private PriorityBlockingQueue<Integer> populatedQueue(int n) {
62	>	PriorityBlockingQueue<Integer> q =
63	>	new PriorityBlockingQueue<Integer>(n);
64		assertTrue(q.isEmpty());
65	<	for(int i = n-1; i >= 0; i-=2)
66	<	assertTrue(q.offer(new Integer(i)));
67	<	for(int i = (n & 1); i < n; i+=2)
68	<	assertTrue(q.offer(new Integer(i)));
65	>	for (int i = n - 1; i >= 0; i -= 2)
66	>	assertTrue(q.offer(new Integer(i)));
67	>	for (int i = (n & 1); i < n; i += 2)
68	>	assertTrue(q.offer(new Integer(i)));
69		assertFalse(q.isEmpty());
70	<	assertEquals(NOCAP, q.remainingCapacity());
71	<	assertEquals(n, q.size());
70	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
71	>	assertEquals(n, q.size());
72		return q;
73		}
74	<
75	<	public void testConstructor1(){
76	<	assertEquals(NOCAP, new PriorityBlockingQueue(SIZE).remainingCapacity());
74	>
75	>	/**
76	>	* A new queue has unbounded capacity
77	>	*/
78	>	public void testConstructor1() {
79	>	assertEquals(Integer.MAX_VALUE,
80	>	new PriorityBlockingQueue(SIZE).remainingCapacity());
81		}
82
83	<	public void testConstructor2(){
83	>	/**
84	>	* Constructor throws IAE if capacity argument nonpositive
85	>	*/
86	>	public void testConstructor2() {
87		try {
88	<	PriorityBlockingQueue q = new PriorityBlockingQueue(0);
89	<	fail("Cannot make zero-sized");
90	<	}
62	<	catch (IllegalArgumentException success) {}
88	>	new PriorityBlockingQueue(0);
89	>	shouldThrow();
90	>	} catch (IllegalArgumentException success) {}
91		}
92
93	<	public void testConstructor3(){
94	<
93	>	/**
94	>	* Initializing from null Collection throws NPE
95	>	*/
96	>	public void testConstructor3() {
97		try {
98	<	PriorityBlockingQueue q = new PriorityBlockingQueue(null);
99	<	fail("Cannot make from null collection");
100	<	}
71	<	catch (NullPointerException success) {}
98	>	new PriorityBlockingQueue(null);
99	>	shouldThrow();
100	>	} catch (NullPointerException success) {}
101		}
102
103	<	public void testConstructor4(){
103	>	/**
104	>	* Initializing from Collection of null elements throws NPE
105	>	*/
106	>	public void testConstructor4() {
107	>	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
108		try {
109	<	Integer[] ints = new Integer[SIZE];
110	<	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
111	<	fail("Cannot make with null elements");
79	<	}
80	<	catch (NullPointerException success) {}
109	>	new PriorityBlockingQueue(elements);
110	>	shouldThrow();
111	>	} catch (NullPointerException success) {}
112		}
113
114	<	public void testConstructor5(){
115	<	try {
116	<	Integer[] ints = new Integer[SIZE];
117	<	for (int i = 0; i < SIZE-1; ++i)
118	<	ints[i] = new Integer(i);
119	<	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
120	<	fail("Cannot make with null elements");
121	<	}
122	<	catch (NullPointerException success) {}
114	>	/**
115	>	* Initializing from Collection with some null elements throws NPE
116	>	*/
117	>	public void testConstructor5() {
118	>	Integer[] ints = new Integer[SIZE];
119	>	for (int i = 0; i < SIZE - 1; ++i)
120	>	ints[i] = i;
121	>	Collection<Integer> elements = Arrays.asList(ints);
122	>	try {
123	>	new PriorityBlockingQueue(elements);
124	>	shouldThrow();
125	>	} catch (NullPointerException success) {}
126		}
127
128	<	public void testConstructor6(){
129	<	try {
130	<	Integer[] ints = new Integer[SIZE];
131	<	for (int i = 0; i < SIZE; ++i)
132	<	ints[i] = new Integer(i);
133	<	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
134	<	for (int i = 0; i < SIZE; ++i)
135	<	assertEquals(ints[i], q.poll());
136	<	}
137	<	finally {}
128	>	/**
129	>	* Queue contains all elements of collection used to initialize
130	>	*/
131	>	public void testConstructor6() {
132	>	Integer[] ints = new Integer[SIZE];
133	>	for (int i = 0; i < SIZE; ++i)
134	>	ints[i] = i;
135	>	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
136	>	for (int i = 0; i < SIZE; ++i)
137	>	assertEquals(ints[i], q.poll());
138		}
139
140	<	public void testConstructor7(){
141	<	try {
142	<	MyReverseComparator cmp = new MyReverseComparator();
143	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE, cmp);
144	<	assertEquals(cmp, q.comparator());
145	<	Integer[] ints = new Integer[SIZE];
146	<	for (int i = 0; i < SIZE; ++i)
147	<	ints[i] = new Integer(i);
148	<	q.addAll(Arrays.asList(ints));
149	<	for (int i = SIZE-1; i >= 0; --i)
150	<	assertEquals(ints[i], q.poll());
151	<	}
152	<	finally {}
140	>	/**
141	>	* The comparator used in constructor is used
142	>	*/
143	>	public void testConstructor7() {
144	>	MyReverseComparator cmp = new MyReverseComparator();
145	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE, cmp);
146	>	assertEquals(cmp, q.comparator());
147	>	Integer[] ints = new Integer[SIZE];
148	>	for (int i = 0; i < SIZE; ++i)
149	>	ints[i] = new Integer(i);
150	>	q.addAll(Arrays.asList(ints));
151	>	for (int i = SIZE - 1; i >= 0; --i)
152	>	assertEquals(ints[i], q.poll());
153		}
154
155	+	/**
156	+	* isEmpty is true before add, false after
157	+	*/
158		public void testEmpty() {
159		PriorityBlockingQueue q = new PriorityBlockingQueue(2);
160		assertTrue(q.isEmpty());
161	<	assertEquals(NOCAP, q.remainingCapacity());
162	<	q.add(new Integer(1));
161	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
162	>	q.add(one);
163		assertFalse(q.isEmpty());
164	<	q.add(new Integer(2));
164	>	q.add(two);
165		q.remove();
166		q.remove();
167		assertTrue(q.isEmpty());
168		}
169
170	<	public void testRemainingCapacity(){
171	<	PriorityBlockingQueue q = populatedQueue(SIZE);
170	>	/**
171	>	* remainingCapacity() always returns Integer.MAX_VALUE
172	>	*/
173	>	public void testRemainingCapacity() {
174	>	BlockingQueue q = populatedQueue(SIZE);
175		for (int i = 0; i < SIZE; ++i) {
176	<	assertEquals(NOCAP, q.remainingCapacity());
177	<	assertEquals(SIZE-i, q.size());
178	<	q.remove();
176	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
177	>	assertEquals(SIZE - i, q.size());
178	>	assertEquals(i, q.remove());
179		}
180		for (int i = 0; i < SIZE; ++i) {
181	<	assertEquals(NOCAP, q.remainingCapacity());
181	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
182		assertEquals(i, q.size());
183	<	q.add(new Integer(i));
183	>	assertTrue(q.add(i));
184		}
185		}
186
187	<	public void testOfferNull(){
188	<	try {
189	<	PriorityBlockingQueue q = new PriorityBlockingQueue(1);
150	<	q.offer(null);
151	<	fail("should throw NPE");
152	<	} catch (NullPointerException success) { }
153	<	}
154	<
187	>	/**
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	+	* Offer of non-Comparable throws CCE
198	+	*/
199		public void testOfferNonComparable() {
200	+	PriorityBlockingQueue q = new PriorityBlockingQueue(1);
201		try {
163	–	PriorityBlockingQueue q = new PriorityBlockingQueue(1);
164	–	q.offer(new Object());
202		q.offer(new Object());
203		q.offer(new Object());
204	<	fail("should throw CCE");
205	<	}
169	<	catch(ClassCastException success) {}
204	>	shouldThrow();
205	>	} catch (ClassCastException success) {}
206		}
207
208	<	public void testAdd(){
208	>	/**
209	>	* add of comparable succeeds
210	>	*/
211	>	public void testAdd() {
212		PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
213		for (int i = 0; i < SIZE; ++i) {
214		assertEquals(i, q.size());
#	Line 177 | Line 216 | public class PriorityBlockingQueueTest e
216		}
217		}
218
219	<	public void testAddAll1(){
219	>	/**
220	>	* addAll(this) throws IAE
221	>	*/
222	>	public void testAddAllSelf() {
223	>	PriorityBlockingQueue q = populatedQueue(SIZE);
224		try {
225	<	PriorityBlockingQueue q = new PriorityBlockingQueue(1);
226	<	q.addAll(null);
227	<	fail("Cannot add null collection");
185	<	}
186	<	catch (NullPointerException success) {}
225	>	q.addAll(q);
226	>	shouldThrow();
227	>	} catch (IllegalArgumentException success) {}
228		}
229	<	public void testAddAll2(){
229	>
230	>	/**
231	>	* addAll of a collection with any null elements throws NPE after
232	>	* possibly adding some elements
233	>	*/
234	>	public void testAddAll3() {
235	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
236	>	Integer[] ints = new Integer[SIZE];
237	>	for (int i = 0; i < SIZE - 1; ++i)
238	>	ints[i] = new Integer(i);
239		try {
190	–	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
191	–	Integer[] ints = new Integer[SIZE];
240		q.addAll(Arrays.asList(ints));
241	<	fail("Cannot add null elements");
242	<	}
195	<	catch (NullPointerException success) {}
241	>	shouldThrow();
242	>	} catch (NullPointerException success) {}
243		}
244	<	public void testAddAll3(){
245	<	try {
246	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
247	<	Integer[] ints = new Integer[SIZE];
248	<	for (int i = 0; i < SIZE-1; ++i)
249	<	ints[i] = new Integer(i);
250	<	q.addAll(Arrays.asList(ints));
251	<	fail("Cannot add null elements");
252	<	}
253	<	catch (NullPointerException success) {}
244	>
245	>	/**
246	>	* Queue contains all elements of successful addAll
247	>	*/
248	>	public void testAddAll5() {
249	>	Integer[] empty = new Integer[0];
250	>	Integer[] ints = new Integer[SIZE];
251	>	for (int i = SIZE - 1; i >= 0; --i)
252	>	ints[i] = new Integer(i);
253	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
254	>	assertFalse(q.addAll(Arrays.asList(empty)));
255	>	assertTrue(q.addAll(Arrays.asList(ints)));
256	>	for (int i = 0; i < SIZE; ++i)
257	>	assertEquals(ints[i], q.poll());
258		}
259
260	<	public void testAddAll5(){
261	<	try {
262	<	Integer[] empty = new Integer[0];
263	<	Integer[] ints = new Integer[SIZE];
264	<	for (int i = SIZE-1; i >= 0; --i)
265	<	ints[i] = new Integer(i);
266	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
267	<	assertFalse(q.addAll(Arrays.asList(empty)));
268	<	assertTrue(q.addAll(Arrays.asList(ints)));
218	<	for (int i = 0; i < SIZE; ++i)
219	<	assertEquals(ints[i], q.poll());
220	<	}
221	<	finally {}
222	<	}
223	<
224	<	public void testPutNull() {
225	<	try {
226	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
227	<	q.put(null);
228	<	fail("put should throw NPE");
229	<	}
230	<	catch (NullPointerException success){
231	<	}
232	<	}
233	<
234	<	public void testPut() {
235	<	try {
236	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
237	<	for (int i = 0; i < SIZE; ++i) {
238	<	Integer I = new Integer(i);
239	<	q.put(I);
240	<	assertTrue(q.contains(I));
241	<	}
242	<	assertEquals(SIZE, q.size());
243	<	}
244	<	finally {
260	>	/**
261	>	* all elements successfully put are contained
262	>	*/
263	>	public void testPut() {
264	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
265	>	for (int i = 0; i < SIZE; ++i) {
266	>	Integer x = new Integer(i);
267	>	q.put(x);
268	>	assertTrue(q.contains(x));
269		}
270	+	assertEquals(SIZE, q.size());
271		}
272
273	<	public void testPutWithTake() {
273	>	/**
274	>	* put doesn't block waiting for take
275	>	*/
276	>	public void testPutWithTake() throws InterruptedException {
277		final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
278	<	Thread t = new Thread(new Runnable() {
279	<	public void run(){
280	<	int added = 0;
281	<	try {
282	<	q.put(new Integer(0));
283	<	++added;
284	<	q.put(new Integer(0));
285	<	++added;
286	<	q.put(new Integer(0));
287	<	++added;
260	<	q.put(new Integer(0));
261	<	++added;
262	<	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	<	}
278	>	final int size = 4;
279	>	Thread t = newStartedThread(new CheckedRunnable() {
280	>	public void realRun() {
281	>	for (int i = 0; i < size; i++)
282	>	q.put(new Integer(0));
283	>	}});
284	>
285	>	awaitTermination(t);
286	>	assertEquals(size, q.size());
287	>	q.take();
288		}
289
290	<	public void testTimedOffer() {
290	>	/**
291	>	* timed offer does not time out
292	>	*/
293	>	public void testTimedOffer() throws InterruptedException {
294		final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
295	<	Thread t = new Thread(new Runnable() {
296	<	public void run(){
297	<	try {
298	<	q.put(new Integer(0));
299	<	q.put(new Integer(0));
300	<	threadAssertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
301	<	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	<	}
295	>	Thread t = newStartedThread(new CheckedRunnable() {
296	>	public void realRun() {
297	>	q.put(new Integer(0));
298	>	q.put(new Integer(0));
299	>	assertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, MILLISECONDS));
300	>	assertTrue(q.offer(new Integer(0), LONG_DELAY_MS, MILLISECONDS));
301	>	}});
302
303	<	public void testTake(){
302	<	try {
303	<	PriorityBlockingQueue q = populatedQueue(SIZE);
304	<	for (int i = 0; i < SIZE; ++i) {
305	<	assertEquals(i, ((Integer)q.take()).intValue());
306	<	}
307	<	} catch (InterruptedException e){
308	<	fail("Unexpected exception");
309	<	}
303	>	awaitTermination(t);
304		}
305
306	<	public void testTakeFromEmpty() {
307	<	final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
308	<	Thread t = new Thread(new Runnable() {
309	<	public void run(){
310	<	try {
311	<	q.take();
312	<	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");
306	>	/**
307	>	* take retrieves elements in priority order
308	>	*/
309	>	public void testTake() throws InterruptedException {
310	>	PriorityBlockingQueue q = populatedQueue(SIZE);
311	>	for (int i = 0; i < SIZE; ++i) {
312	>	assertEquals(i, q.take());
313		}
314		}
315
316	<	public void testBlockingTake(){
317	<	Thread t = new Thread(new Runnable() {
318	<	public void run() {
319	<	try {
320	<	PriorityBlockingQueue q = populatedQueue(SIZE);
321	<	for (int i = 0; i < SIZE; ++i) {
322	<	threadAssertEquals(i, ((Integer)q.take()).intValue());
323	<	}
324	<	q.take();
325	<	threadFail("take should block");
326	<	} catch (InterruptedException success){
343	<	}
344	<	}});
345	<	t.start();
346	<	try {
347	<	Thread.sleep(SHORT_DELAY_MS);
348	<	t.interrupt();
349	<	t.join();
350	<	}
351	<	catch (InterruptedException ie) {
352	<	fail("Unexpected exception");
353	<	}
354	<	}
316	>	/**
317	>	* Take removes existing elements until empty, then blocks interruptibly
318	>	*/
319	>	public void testBlockingTake() throws InterruptedException {
320	>	final PriorityBlockingQueue q = populatedQueue(SIZE);
321	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
322	>	Thread t = newStartedThread(new CheckedRunnable() {
323	>	public void realRun() throws InterruptedException {
324	>	for (int i = 0; i < SIZE; ++i) {
325	>	assertEquals(i, q.take());
326	>	}
327
328	+	Thread.currentThread().interrupt();
329	+	try {
330	+	q.take();
331	+	shouldThrow();
332	+	} catch (InterruptedException success) {}
333	+	assertFalse(Thread.interrupted());
334	+
335	+	pleaseInterrupt.countDown();
336	+	try {
337	+	q.take();
338	+	shouldThrow();
339	+	} catch (InterruptedException success) {}
340	+	assertFalse(Thread.interrupted());
341	+	}});
342	+
343	+	await(pleaseInterrupt);
344	+	assertThreadStaysAlive(t);
345	+	t.interrupt();
346	+	awaitTermination(t);
347	+	}
348
349	<	public void testPoll(){
349	>	/**
350	>	* poll succeeds unless empty
351	>	*/
352	>	public void testPoll() {
353		PriorityBlockingQueue q = populatedQueue(SIZE);
354		for (int i = 0; i < SIZE; ++i) {
355	<	assertEquals(i, ((Integer)q.poll()).intValue());
355	>	assertEquals(i, q.poll());
356		}
357	<	assertNull(q.poll());
357	>	assertNull(q.poll());
358		}
359
360	<	public void testTimedPoll0() {
361	<	try {
362	<	PriorityBlockingQueue q = populatedQueue(SIZE);
363	<	for (int i = 0; i < SIZE; ++i) {
364	<	assertEquals(i, ((Integer)q.poll(0, TimeUnit.MILLISECONDS)).intValue());
365	<	}
366	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
367	<	} catch (InterruptedException e){
368	<	fail("Unexpected exception");
374	<	}
360	>	/**
361	>	* timed poll with zero timeout succeeds when non-empty, else times out
362	>	*/
363	>	public void testTimedPoll0() throws InterruptedException {
364	>	PriorityBlockingQueue q = populatedQueue(SIZE);
365	>	for (int i = 0; i < SIZE; ++i) {
366	>	assertEquals(i, q.poll(0, MILLISECONDS));
367	>	}
368	>	assertNull(q.poll(0, MILLISECONDS));
369		}
370
371	<	public void testTimedPoll() {
372	<	try {
373	<	PriorityBlockingQueue q = populatedQueue(SIZE);
374	<	for (int i = 0; i < SIZE; ++i) {
375	<	assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
376	<	}
377	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
378	<	} catch (InterruptedException e){
379	<	fail("Unexpected exception");
380	<	}
381	<	}
382	<
383	<	public void testInterruptedTimedPoll(){
384	<	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");
409	<	}
371	>	/**
372	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
373	>	*/
374	>	public void testTimedPoll() throws InterruptedException {
375	>	PriorityBlockingQueue<Integer> q = populatedQueue(SIZE);
376	>	for (int i = 0; i < SIZE; ++i) {
377	>	long startTime = System.nanoTime();
378	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
379	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
380	>	}
381	>	long startTime = System.nanoTime();
382	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
383	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
384	>	checkEmpty(q);
385		}
386
387	<	public void testTimedPollWithOffer(){
388	<	final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
389	<	Thread t = new Thread(new Runnable() {
390	<	public void run(){
391	<	try {
392	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
393	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
394	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
395	<	threadFail("Should block");
396	<	} catch (InterruptedException success) { }
387	>	/**
388	>	* Interrupted timed poll throws InterruptedException instead of
389	>	* returning timeout status
390	>	*/
391	>	public void testInterruptedTimedPoll() throws InterruptedException {
392	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
393	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
394	>	Thread t = newStartedThread(new CheckedRunnable() {
395	>	public void realRun() throws InterruptedException {
396	>	long startTime = System.nanoTime();
397	>	for (int i = 0; i < SIZE; ++i) {
398	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
399		}
400	<	});
401	<	try {
402	<	t.start();
403	<	Thread.sleep(SMALL_DELAY_MS);
404	<	assertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
405	<	t.interrupt();
406	<	t.join();
407	<	} catch (Exception e){
431	<	fail("Unexpected exception");
432	<	}
433	<	}
400	>	aboutToWait.countDown();
401	>	try {
402	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
403	>	shouldThrow();
404	>	} catch (InterruptedException success) {
405	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
406	>	}
407	>	}});
408
409	+	aboutToWait.await();
410	+	waitForThreadToEnterWaitState(t, LONG_DELAY_MS);
411	+	t.interrupt();
412	+	awaitTermination(t);
413	+	}
414
415	<	public void testPeek(){
415	>	/**
416	>	* peek returns next element, or null if empty
417	>	*/
418	>	public void testPeek() {
419		PriorityBlockingQueue q = populatedQueue(SIZE);
420		for (int i = 0; i < SIZE; ++i) {
421	<	assertEquals(i, ((Integer)q.peek()).intValue());
422	<	q.poll();
421	>	assertEquals(i, q.peek());
422	>	assertEquals(i, q.poll());
423		assertTrue(q.peek() == null ||
424	<	i != ((Integer)q.peek()).intValue());
424	>	!q.peek().equals(i));
425		}
426	<	assertNull(q.peek());
426	>	assertNull(q.peek());
427		}
428
429	<	public void testElement(){
429	>	/**
430	>	* element returns next element, or throws NSEE if empty
431	>	*/
432	>	public void testElement() {
433		PriorityBlockingQueue q = populatedQueue(SIZE);
434		for (int i = 0; i < SIZE; ++i) {
435	<	assertEquals(i, ((Integer)q.element()).intValue());
436	<	q.poll();
435	>	assertEquals(i, q.element());
436	>	assertEquals(i, q.poll());
437		}
438		try {
439		q.element();
440	<	fail("no such element");
441	<	}
457	<	catch (NoSuchElementException success) {}
440	>	shouldThrow();
441	>	} catch (NoSuchElementException success) {}
442		}
443
444	<	public void testRemove(){
444	>	/**
445	>	* remove removes next element, or throws NSEE if empty
446	>	*/
447	>	public void testRemove() {
448		PriorityBlockingQueue q = populatedQueue(SIZE);
449		for (int i = 0; i < SIZE; ++i) {
450	<	assertEquals(i, ((Integer)q.remove()).intValue());
450	>	assertEquals(i, q.remove());
451		}
452		try {
453		q.remove();
454	<	fail("remove should throw");
455	<	} catch (NoSuchElementException success){
469	<	}
454	>	shouldThrow();
455	>	} catch (NoSuchElementException success) {}
456		}
457
458	<	public void testRemoveElement(){
459	<	PriorityBlockingQueue q = populatedQueue(SIZE);
460	<	for (int i = 1; i < SIZE; i+=2) {
461	<	assertTrue(q.remove(new Integer(i)));
476	<	}
477	<	for (int i = 0; i < SIZE; i+=2) {
478	<	assertTrue(q.remove(new Integer(i)));
479	<	assertFalse(q.remove(new Integer(i+1)));
480	<	}
481	<	assertTrue(q.isEmpty());
482	<	}
483	<
484	<	public void testContains(){
458	>	/**
459	>	* contains(x) reports true when elements added but not yet removed
460	>	*/
461	>	public void testContains() {
462		PriorityBlockingQueue q = populatedQueue(SIZE);
463		for (int i = 0; i < SIZE; ++i) {
464		assertTrue(q.contains(new Integer(i)));
#	Line 490 | Line 467 | public class PriorityBlockingQueueTest e
467		}
468		}
469
470	<	public void testClear(){
470	>	/**
471	>	* clear removes all elements
472	>	*/
473	>	public void testClear() {
474		PriorityBlockingQueue q = populatedQueue(SIZE);
475		q.clear();
476		assertTrue(q.isEmpty());
477		assertEquals(0, q.size());
478	<	assertEquals(NOCAP, q.remainingCapacity());
499	<	q.add(new Integer(1));
478	>	q.add(one);
479		assertFalse(q.isEmpty());
480	+	assertTrue(q.contains(one));
481		q.clear();
482		assertTrue(q.isEmpty());
483		}
484
485	<	public void testContainsAll(){
485	>	/**
486	>	* containsAll(c) is true when c contains a subset of elements
487	>	*/
488	>	public void testContainsAll() {
489		PriorityBlockingQueue q = populatedQueue(SIZE);
490		PriorityBlockingQueue p = new PriorityBlockingQueue(SIZE);
491		for (int i = 0; i < SIZE; ++i) {
#	Line 513 | Line 496 | public class PriorityBlockingQueueTest e
496		assertTrue(p.containsAll(q));
497		}
498
499	<	public void testRetainAll(){
499	>	/**
500	>	* retainAll(c) retains only those elements of c and reports true if changed
501	>	*/
502	>	public void testRetainAll() {
503		PriorityBlockingQueue q = populatedQueue(SIZE);
504		PriorityBlockingQueue p = populatedQueue(SIZE);
505		for (int i = 0; i < SIZE; ++i) {
#	Line 524 | Line 510 | public class PriorityBlockingQueueTest e
510		assertTrue(changed);
511
512		assertTrue(q.containsAll(p));
513	<	assertEquals(SIZE-i, q.size());
513	>	assertEquals(SIZE - i, q.size());
514		p.remove();
515		}
516		}
517
518	<	public void testRemoveAll(){
518	>	/**
519	>	* removeAll(c) removes only those elements of c and reports true if changed
520	>	*/
521	>	public void testRemoveAll() {
522		for (int i = 1; i < SIZE; ++i) {
523		PriorityBlockingQueue q = populatedQueue(SIZE);
524		PriorityBlockingQueue p = populatedQueue(i);
525		assertTrue(q.removeAll(p));
526	<	assertEquals(SIZE-i, q.size());
526	>	assertEquals(SIZE - i, q.size());
527		for (int j = 0; j < i; ++j) {
528	<	Integer I = (Integer)(p.remove());
529	<	assertFalse(q.contains(I));
528	>	Integer x = (Integer)(p.remove());
529	>	assertFalse(q.contains(x));
530		}
531		}
532		}
533
534	<	public void testToArray(){
534	>	/**
535	>	* toArray contains all elements
536	>	*/
537	>	public void testToArray() throws InterruptedException {
538		PriorityBlockingQueue q = populatedQueue(SIZE);
539	<	Object[] o = q.toArray();
539	>	Object[] o = q.toArray();
540		Arrays.sort(o);
541	<	try {
542	<	for(int i = 0; i < o.length; i++)
551	<	assertEquals(o[i], q.take());
552	<	} catch (InterruptedException e){
553	<	fail("Unexpected exception");
554	<	}
541	>	for (int i = 0; i < o.length; i++)
542	>	assertSame(o[i], q.take());
543		}
544
545	<	public void testToArray2(){
546	<	PriorityBlockingQueue q = populatedQueue(SIZE);
547	<	Integer[] ints = new Integer[SIZE];
548	<	ints = (Integer[])q.toArray(ints);
545	>	/**
546	>	* toArray(a) contains all elements
547	>	*/
548	>	public void testToArray2() throws InterruptedException {
549	>	PriorityBlockingQueue<Integer> q = populatedQueue(SIZE);
550	>	Integer[] ints = new Integer[SIZE];
551	>	Integer[] array = q.toArray(ints);
552	>	assertSame(ints, array);
553		Arrays.sort(ints);
554	<	try {
555	<	for(int i = 0; i < ints.length; i++)
556	<	assertEquals(ints[i], q.take());
557	<	} catch (InterruptedException e){
558	<	fail("Unexpected exception");
559	<	}
560	<	}
561	<
562	<	public void testIterator(){
563	<	PriorityBlockingQueue q = populatedQueue(SIZE);
564	<	int i = 0;
565	<	Iterator it = q.iterator();
566	<	while(it.hasNext()) {
554	>	for (int i = 0; i < ints.length; i++)
555	>	assertSame(ints[i], q.take());
556	>	}
557	>
558	>	/**
559	>	* toArray(incompatible array type) throws ArrayStoreException
560	>	*/
561	>	public void testToArray1_BadArg() {
562	>	PriorityBlockingQueue q = populatedQueue(SIZE);
563	>	try {
564	>	q.toArray(new String[10]);
565	>	shouldThrow();
566	>	} catch (ArrayStoreException success) {}
567	>	}
568	>
569	>	/**
570	>	* iterator iterates through all elements
571	>	*/
572	>	public void testIterator() {
573	>	PriorityBlockingQueue q = populatedQueue(SIZE);
574	>	Iterator it = q.iterator();
575	>	int i;
576	>	for (i = 0; it.hasNext(); i++)
577		assertTrue(q.contains(it.next()));
576	–	++i;
577	–	}
578		assertEquals(i, SIZE);
579	+	assertIteratorExhausted(it);
580		}
581
582	<	public void testIteratorRemove () {
582	>	/**
583	>	* iterator of empty collection has no elements
584	>	*/
585	>	public void testEmptyIterator() {
586	>	assertIteratorExhausted(new PriorityBlockingQueue().iterator());
587	>	}
588
589	+	/**
590	+	* iterator.remove removes current element
591	+	*/
592	+	public void testIteratorRemove() {
593		final PriorityBlockingQueue q = new PriorityBlockingQueue(3);
584	–
594		q.add(new Integer(2));
595		q.add(new Integer(1));
596		q.add(new Integer(3));
#	Line 596 | Line 605 | public class PriorityBlockingQueueTest e
605		assertFalse(it.hasNext());
606		}
607
608	<
609	<	public void testToString(){
608	>	/**
609	>	* toString contains toStrings of elements
610	>	*/
611	>	public void testToString() {
612		PriorityBlockingQueue q = populatedQueue(SIZE);
613		String s = q.toString();
614		for (int i = 0; i < SIZE; ++i) {
615	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
615	>	assertTrue(s.contains(String.valueOf(i)));
616		}
617	<	}
617	>	}
618
619	+	/**
620	+	* timed poll transfers elements across Executor tasks
621	+	*/
622		public void testPollInExecutor() {
609	–
623		final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
624	+	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
625	+	final ExecutorService executor = Executors.newFixedThreadPool(2);
626	+	try (PoolCleaner cleaner = cleaner(executor)) {
627	+	executor.execute(new CheckedRunnable() {
628	+	public void realRun() throws InterruptedException {
629	+	assertNull(q.poll());
630	+	threadsStarted.await();
631	+	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
632	+	checkEmpty(q);
633	+	}});
634
635	<	ExecutorService executor = Executors.newFixedThreadPool(2);
635	>	executor.execute(new CheckedRunnable() {
636	>	public void realRun() throws InterruptedException {
637	>	threadsStarted.await();
638	>	q.put(one);
639	>	}});
640	>	}
641	>	}
642
643	<	executor.execute(new Runnable() {
644	<	public void run() {
645	<	threadAssertNull(q.poll());
646	<	try {
647	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
648	<	threadAssertTrue(q.isEmpty());
649	<	}
650	<	catch (InterruptedException e) {
651	<	threadFail("should not be interrupted");
652	<	}
653	<	}
654	<	});
643	>	/**
644	>	* A deserialized serialized queue has same elements
645	>	*/
646	>	public void testSerialization() throws Exception {
647	>	Queue x = populatedQueue(SIZE);
648	>	Queue y = serialClone(x);
649	>
650	>	assertNotSame(x, y);
651	>	assertEquals(x.size(), y.size());
652	>	while (!x.isEmpty()) {
653	>	assertFalse(y.isEmpty());
654	>	assertEquals(x.remove(), y.remove());
655	>	}
656	>	assertTrue(y.isEmpty());
657	>	}
658
659	<	executor.execute(new Runnable() {
660	<	public void run() {
661	<	try {
662	<	Thread.sleep(SMALL_DELAY_MS);
663	<	q.put(new Integer(1));
664	<	}
665	<	catch (InterruptedException e) {
666	<	threadFail("should not be interrupted");
667	<	}
668	<	}
669	<	});
670	<
671	<	joinPool(executor);
659	>	/**
660	>	* drainTo(c) empties queue into another collection c
661	>	*/
662	>	public void testDrainTo() {
663	>	PriorityBlockingQueue q = populatedQueue(SIZE);
664	>	ArrayList l = new ArrayList();
665	>	q.drainTo(l);
666	>	assertEquals(0, q.size());
667	>	assertEquals(SIZE, l.size());
668	>	for (int i = 0; i < SIZE; ++i)
669	>	assertEquals(l.get(i), new Integer(i));
670	>	q.add(zero);
671	>	q.add(one);
672	>	assertFalse(q.isEmpty());
673	>	assertTrue(q.contains(zero));
674	>	assertTrue(q.contains(one));
675	>	l.clear();
676	>	q.drainTo(l);
677	>	assertEquals(0, q.size());
678	>	assertEquals(2, l.size());
679	>	for (int i = 0; i < 2; ++i)
680	>	assertEquals(l.get(i), new Integer(i));
681	>	}
682	>
683	>	/**
684	>	* drainTo empties queue
685	>	*/
686	>	public void testDrainToWithActivePut() throws InterruptedException {
687	>	final PriorityBlockingQueue q = populatedQueue(SIZE);
688	>	Thread t = new Thread(new CheckedRunnable() {
689	>	public void realRun() {
690	>	q.put(new Integer(SIZE + 1));
691	>	}});
692
693	+	t.start();
694	+	ArrayList l = new ArrayList();
695	+	q.drainTo(l);
696	+	assertTrue(l.size() >= SIZE);
697	+	for (int i = 0; i < SIZE; ++i)
698	+	assertEquals(l.get(i), new Integer(i));
699	+	t.join();
700	+	assertTrue(q.size() + l.size() >= SIZE);
701		}
702
703	<	public void testSerialization() {
704	<	PriorityBlockingQueue q = populatedQueue(SIZE);
705	<	try {
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	<	} catch(Exception e){
718	<	fail("unexpected exception");
703	>	/**
704	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
705	>	*/
706	>	public void testDrainToN() {
707	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE * 2);
708	>	for (int i = 0; i < SIZE + 2; ++i) {
709	>	for (int j = 0; j < SIZE; j++)
710	>	assertTrue(q.offer(new Integer(j)));
711	>	ArrayList l = new ArrayList();
712	>	q.drainTo(l, i);
713	>	int k = (i < SIZE) ? i : SIZE;
714	>	assertEquals(k, l.size());
715	>	assertEquals(SIZE - k, q.size());
716	>	for (int j = 0; j < k; ++j)
717	>	assertEquals(l.get(j), new Integer(j));
718	>	do {} while (q.poll() != null);
719	>	}
720	>	}
721	>
722	>	/**
723	>	* remove(null), contains(null) always return false
724	>	*/
725	>	public void testNeverContainsNull() {
726	>	Collection<?>[] qs = {
727	>	new PriorityBlockingQueue<Object>(),
728	>	populatedQueue(2),
729	>	};
730	>
731	>	for (Collection<?> q : qs) {
732	>	assertFalse(q.contains(null));
733	>	assertFalse(q.remove(null));
734		}
735		}
736

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