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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 1.79 by jsr166, Fri Aug 4 03:30:21 2017 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	>	class Implementation implements CollectionImplementation {
46	>	public Class<?> klazz() { return PriorityBlockingQueue.class; }
47	>	public Collection emptyCollection() { return new PriorityBlockingQueue(); }
48	>	public Object makeElement(int i) { return i; }
49	>	public boolean isConcurrent() { return true; }
50	>	public boolean permitsNulls() { return false; }
51	>	}
52	>	return newTestSuite(PriorityBlockingQueueTest.class,
53	>	new Generic().testSuite(),
54	>	new InitialCapacity().testSuite(),
55	>	CollectionTest.testSuite(new Implementation()));
56		}
57
22	–	private static final int NOCAP = Integer.MAX_VALUE;
23	–
58		/** Sample Comparator */
59	<	static class MyReverseComparator implements Comparator {
59	>	static class MyReverseComparator implements Comparator {
60		public int compare(Object x, Object y) {
61	<	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;
61	>	return ((Comparable)y).compareTo(x);
62		}
63		}
64
35	–
65		/**
66	<	* Create a queue of given size containing consecutive
67	<	* Integers 0 ... n.
66	>	* Returns a new queue of given size containing consecutive
67	>	* Integers 0 ... n - 1.
68		*/
69	<	private PriorityBlockingQueue populatedQueue(int n) {
70	<	PriorityBlockingQueue q = new PriorityBlockingQueue(n);
69	>	private static PriorityBlockingQueue<Integer> populatedQueue(int n) {
70	>	PriorityBlockingQueue<Integer> q =
71	>	new PriorityBlockingQueue<Integer>(n);
72		assertTrue(q.isEmpty());
73	<	for(int i = n-1; i >= 0; i-=2)
74	<	assertTrue(q.offer(new Integer(i)));
75	<	for(int i = (n & 1); i < n; i+=2)
76	<	assertTrue(q.offer(new Integer(i)));
73	>	for (int i = n - 1; i >= 0; i -= 2)
74	>	assertTrue(q.offer(new Integer(i)));
75	>	for (int i = (n & 1); i < n; i += 2)
76	>	assertTrue(q.offer(new Integer(i)));
77		assertFalse(q.isEmpty());
78	<	assertEquals(NOCAP, q.remainingCapacity());
79	<	assertEquals(n, q.size());
78	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
79	>	assertEquals(n, q.size());
80	>	assertEquals((Integer) 0, q.peek());
81		return q;
82		}
83	<
84	<	public void testConstructor1(){
85	<	assertEquals(NOCAP, new PriorityBlockingQueue(SIZE).remainingCapacity());
83	>
84	>	/**
85	>	* A new queue has unbounded capacity
86	>	*/
87	>	public void testConstructor1() {
88	>	assertEquals(Integer.MAX_VALUE,
89	>	new PriorityBlockingQueue(SIZE).remainingCapacity());
90		}
91
92	<	public void testConstructor2(){
92	>	/**
93	>	* Constructor throws IllegalArgumentException if capacity argument nonpositive
94	>	*/
95	>	public void testConstructor2() {
96		try {
97	<	PriorityBlockingQueue q = new PriorityBlockingQueue(0);
98	<	fail("Cannot make zero-sized");
99	<	}
62	<	catch (IllegalArgumentException success) {}
97	>	new PriorityBlockingQueue(0);
98	>	shouldThrow();
99	>	} catch (IllegalArgumentException success) {}
100		}
101
102	<	public void testConstructor3(){
103	<
102	>	/**
103	>	* Initializing from null Collection throws NPE
104	>	*/
105	>	public void testConstructor3() {
106		try {
107	<	PriorityBlockingQueue q = new PriorityBlockingQueue(null);
108	<	fail("Cannot make from null collection");
109	<	}
71	<	catch (NullPointerException success) {}
107	>	new PriorityBlockingQueue(null);
108	>	shouldThrow();
109	>	} catch (NullPointerException success) {}
110		}
111
112	<	public void testConstructor4(){
112	>	/**
113	>	* Initializing from Collection of null elements throws NPE
114	>	*/
115	>	public void testConstructor4() {
116	>	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
117		try {
118	<	Integer[] ints = new Integer[SIZE];
119	<	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
120	<	fail("Cannot make with null elements");
79	<	}
80	<	catch (NullPointerException success) {}
118	>	new PriorityBlockingQueue(elements);
119	>	shouldThrow();
120	>	} catch (NullPointerException success) {}
121		}
122
123	<	public void testConstructor5(){
124	<	try {
125	<	Integer[] ints = new Integer[SIZE];
126	<	for (int i = 0; i < SIZE-1; ++i)
127	<	ints[i] = new Integer(i);
128	<	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
129	<	fail("Cannot make with null elements");
130	<	}
131	<	catch (NullPointerException success) {}
123	>	/**
124	>	* Initializing from Collection with some null elements throws NPE
125	>	*/
126	>	public void testConstructor5() {
127	>	Integer[] ints = new Integer[SIZE];
128	>	for (int i = 0; i < SIZE - 1; ++i)
129	>	ints[i] = i;
130	>	Collection<Integer> elements = Arrays.asList(ints);
131	>	try {
132	>	new PriorityBlockingQueue(elements);
133	>	shouldThrow();
134	>	} catch (NullPointerException success) {}
135		}
136
137	<	public void testConstructor6(){
138	<	try {
139	<	Integer[] ints = new Integer[SIZE];
140	<	for (int i = 0; i < SIZE; ++i)
141	<	ints[i] = new Integer(i);
142	<	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
143	<	for (int i = 0; i < SIZE; ++i)
144	<	assertEquals(ints[i], q.poll());
145	<	}
146	<	finally {}
137	>	/**
138	>	* Queue contains all elements of collection used to initialize
139	>	*/
140	>	public void testConstructor6() {
141	>	Integer[] ints = new Integer[SIZE];
142	>	for (int i = 0; i < SIZE; ++i)
143	>	ints[i] = i;
144	>	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
145	>	for (int i = 0; i < SIZE; ++i)
146	>	assertEquals(ints[i], q.poll());
147		}
148
149	<	public void testConstructor7(){
150	<	try {
151	<	MyReverseComparator cmp = new MyReverseComparator();
152	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE, cmp);
153	<	assertEquals(cmp, q.comparator());
154	<	Integer[] ints = new Integer[SIZE];
155	<	for (int i = 0; i < SIZE; ++i)
156	<	ints[i] = new Integer(i);
157	<	q.addAll(Arrays.asList(ints));
158	<	for (int i = SIZE-1; i >= 0; --i)
159	<	assertEquals(ints[i], q.poll());
160	<	}
161	<	finally {}
149	>	/**
150	>	* The comparator used in constructor is used
151	>	*/
152	>	public void testConstructor7() {
153	>	MyReverseComparator cmp = new MyReverseComparator();
154	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE, cmp);
155	>	assertEquals(cmp, q.comparator());
156	>	Integer[] ints = new Integer[SIZE];
157	>	for (int i = 0; i < SIZE; ++i)
158	>	ints[i] = new Integer(i);
159	>	q.addAll(Arrays.asList(ints));
160	>	for (int i = SIZE - 1; i >= 0; --i)
161	>	assertEquals(ints[i], q.poll());
162		}
163
164	+	/**
165	+	* isEmpty is true before add, false after
166	+	*/
167		public void testEmpty() {
168		PriorityBlockingQueue q = new PriorityBlockingQueue(2);
169		assertTrue(q.isEmpty());
170	<	assertEquals(NOCAP, q.remainingCapacity());
171	<	q.add(new Integer(1));
170	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
171	>	q.add(one);
172		assertFalse(q.isEmpty());
173	<	q.add(new Integer(2));
173	>	q.add(two);
174		q.remove();
175		q.remove();
176		assertTrue(q.isEmpty());
177		}
178
179	<	public void testRemainingCapacity(){
180	<	PriorityBlockingQueue q = populatedQueue(SIZE);
179	>	/**
180	>	* remainingCapacity() always returns Integer.MAX_VALUE
181	>	*/
182	>	public void testRemainingCapacity() {
183	>	BlockingQueue q = populatedQueue(SIZE);
184		for (int i = 0; i < SIZE; ++i) {
185	<	assertEquals(NOCAP, q.remainingCapacity());
186	<	assertEquals(SIZE-i, q.size());
187	<	q.remove();
185	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
186	>	assertEquals(SIZE - i, q.size());
187	>	assertEquals(i, q.remove());
188		}
189		for (int i = 0; i < SIZE; ++i) {
190	<	assertEquals(NOCAP, q.remainingCapacity());
190	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
191		assertEquals(i, q.size());
192	<	q.add(new Integer(i));
192	>	assertTrue(q.add(i));
193		}
194		}
195
196	<	public void testOfferNull(){
197	<	try {
198	<	PriorityBlockingQueue q = new PriorityBlockingQueue(1);
150	<	q.offer(null);
151	<	fail("should throw NPE");
152	<	} catch (NullPointerException success) { }
153	<	}
154	<
196	>	/**
197	>	* Offer of comparable element succeeds
198	>	*/
199		public void testOffer() {
200		PriorityBlockingQueue q = new PriorityBlockingQueue(1);
201	<	assertTrue(q.offer(new Integer(0)));
202	<	assertTrue(q.offer(new Integer(1)));
201	>	assertTrue(q.offer(zero));
202	>	assertTrue(q.offer(one));
203		}
204
205	+	/**
206	+	* Offer of non-Comparable throws CCE
207	+	*/
208		public void testOfferNonComparable() {
209	+	PriorityBlockingQueue q = new PriorityBlockingQueue(1);
210		try {
163	–	PriorityBlockingQueue q = new PriorityBlockingQueue(1);
164	–	q.offer(new Object());
211		q.offer(new Object());
212	<	q.offer(new Object());
213	<	fail("should throw CCE");
212	>	shouldThrow();
213	>	} catch (ClassCastException success) {
214	>	assertTrue(q.isEmpty());
215	>	assertEquals(0, q.size());
216	>	assertNull(q.poll());
217		}
169	–	catch(ClassCastException success) {}
218		}
219
220	<	public void testAdd(){
220	>	/**
221	>	* add of comparable succeeds
222	>	*/
223	>	public void testAdd() {
224		PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
225		for (int i = 0; i < SIZE; ++i) {
226		assertEquals(i, q.size());
#	Line 177 | Line 228 | public class PriorityBlockingQueueTest e
228		}
229		}
230
231	<	public void testAddAll1(){
231	>	/**
232	>	* addAll(this) throws IllegalArgumentException
233	>	*/
234	>	public void testAddAllSelf() {
235	>	PriorityBlockingQueue q = populatedQueue(SIZE);
236		try {
237	<	PriorityBlockingQueue q = new PriorityBlockingQueue(1);
238	<	q.addAll(null);
239	<	fail("Cannot add null collection");
185	<	}
186	<	catch (NullPointerException success) {}
237	>	q.addAll(q);
238	>	shouldThrow();
239	>	} catch (IllegalArgumentException success) {}
240		}
241	<	public void testAddAll2(){
241	>
242	>	/**
243	>	* addAll of a collection with any null elements throws NPE after
244	>	* possibly adding some elements
245	>	*/
246	>	public void testAddAll3() {
247	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
248	>	Integer[] ints = new Integer[SIZE];
249	>	for (int i = 0; i < SIZE - 1; ++i)
250	>	ints[i] = new Integer(i);
251		try {
190	–	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
191	–	Integer[] ints = new Integer[SIZE];
252		q.addAll(Arrays.asList(ints));
253	<	fail("Cannot add null elements");
254	<	}
195	<	catch (NullPointerException success) {}
253	>	shouldThrow();
254	>	} catch (NullPointerException success) {}
255		}
256	<	public void testAddAll3(){
257	<	try {
258	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
259	<	Integer[] ints = new Integer[SIZE];
260	<	for (int i = 0; i < SIZE-1; ++i)
261	<	ints[i] = new Integer(i);
262	<	q.addAll(Arrays.asList(ints));
263	<	fail("Cannot add null elements");
264	<	}
265	<	catch (NullPointerException success) {}
256	>
257	>	/**
258	>	* Queue contains all elements of successful addAll
259	>	*/
260	>	public void testAddAll5() {
261	>	Integer[] empty = new Integer[0];
262	>	Integer[] ints = new Integer[SIZE];
263	>	for (int i = SIZE - 1; i >= 0; --i)
264	>	ints[i] = new Integer(i);
265	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
266	>	assertFalse(q.addAll(Arrays.asList(empty)));
267	>	assertTrue(q.addAll(Arrays.asList(ints)));
268	>	for (int i = 0; i < SIZE; ++i)
269	>	assertEquals(ints[i], q.poll());
270		}
271
272	<	public void testAddAll5(){
273	<	try {
274	<	Integer[] empty = new Integer[0];
275	<	Integer[] ints = new Integer[SIZE];
276	<	for (int i = SIZE-1; i >= 0; --i)
277	<	ints[i] = new Integer(i);
278	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
279	<	assertFalse(q.addAll(Arrays.asList(empty)));
280	<	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 {
272	>	/**
273	>	* all elements successfully put are contained
274	>	*/
275	>	public void testPut() {
276	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
277	>	for (int i = 0; i < SIZE; ++i) {
278	>	Integer x = new Integer(i);
279	>	q.put(x);
280	>	assertTrue(q.contains(x));
281		}
282	+	assertEquals(SIZE, q.size());
283		}
284
285	<	public void testPutWithTake() {
285	>	/**
286	>	* put doesn't block waiting for take
287	>	*/
288	>	public void testPutWithTake() throws InterruptedException {
289		final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
290	<	Thread t = new Thread(new Runnable() {
291	<	public void run(){
292	<	int added = 0;
293	<	try {
294	<	q.put(new Integer(0));
295	<	++added;
296	<	q.put(new Integer(0));
297	<	++added;
298	<	q.put(new Integer(0));
299	<	++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	<	}
290	>	final int size = 4;
291	>	Thread t = newStartedThread(new CheckedRunnable() {
292	>	public void realRun() {
293	>	for (int i = 0; i < size; i++)
294	>	q.put(new Integer(0));
295	>	}});
296	>
297	>	awaitTermination(t);
298	>	assertEquals(size, q.size());
299	>	q.take();
300		}
301
302	+	/**
303	+	* timed offer does not time out
304	+	*/
305		public void testTimedOffer() {
306		final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
307	<	Thread t = new Thread(new Runnable() {
308	<	public void run(){
309	<	try {
310	<	q.put(new Integer(0));
311	<	q.put(new Integer(0));
312	<	threadAssertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
313	<	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	<	}
307	>	Thread t = newStartedThread(new CheckedRunnable() {
308	>	public void realRun() {
309	>	q.put(new Integer(0));
310	>	q.put(new Integer(0));
311	>	assertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, MILLISECONDS));
312	>	assertTrue(q.offer(new Integer(0), LONG_DELAY_MS, MILLISECONDS));
313	>	}});
314
315	<	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	<	}
315	>	awaitTermination(t);
316		}
317
318	<	public void testTakeFromEmpty() {
319	<	final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
320	<	Thread t = new Thread(new Runnable() {
321	<	public void run(){
322	<	try {
323	<	q.take();
324	<	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");
318	>	/**
319	>	* take retrieves elements in priority order
320	>	*/
321	>	public void testTake() throws InterruptedException {
322	>	PriorityBlockingQueue q = populatedQueue(SIZE);
323	>	for (int i = 0; i < SIZE; ++i) {
324	>	assertEquals(i, q.take());
325		}
326		}
327
328	<	public void testBlockingTake(){
329	<	Thread t = new Thread(new Runnable() {
330	<	public void run() {
331	<	try {
332	<	PriorityBlockingQueue q = populatedQueue(SIZE);
333	<	for (int i = 0; i < SIZE; ++i) {
334	<	threadAssertEquals(i, ((Integer)q.take()).intValue());
335	<	}
336	<	q.take();
341	<	threadFail("take should block");
342	<	} 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	<	}
328	>	/**
329	>	* Take removes existing elements until empty, then blocks interruptibly
330	>	*/
331	>	public void testBlockingTake() throws InterruptedException {
332	>	final PriorityBlockingQueue q = populatedQueue(SIZE);
333	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
334	>	Thread t = newStartedThread(new CheckedRunnable() {
335	>	public void realRun() throws InterruptedException {
336	>	for (int i = 0; i < SIZE; i++) assertEquals(i, q.take());
337
338	+	Thread.currentThread().interrupt();
339	+	try {
340	+	q.take();
341	+	shouldThrow();
342	+	} catch (InterruptedException success) {}
343	+	assertFalse(Thread.interrupted());
344	+
345	+	pleaseInterrupt.countDown();
346	+	try {
347	+	q.take();
348	+	shouldThrow();
349	+	} catch (InterruptedException success) {}
350	+	assertFalse(Thread.interrupted());
351	+	}});
352	+
353	+	await(pleaseInterrupt);
354	+	assertThreadBlocks(t, Thread.State.WAITING);
355	+	t.interrupt();
356	+	awaitTermination(t);
357	+	}
358
359	<	public void testPoll(){
359	>	/**
360	>	* poll succeeds unless empty
361	>	*/
362	>	public void testPoll() {
363		PriorityBlockingQueue q = populatedQueue(SIZE);
364		for (int i = 0; i < SIZE; ++i) {
365	<	assertEquals(i, ((Integer)q.poll()).intValue());
365	>	assertEquals(i, q.poll());
366		}
367	<	assertNull(q.poll());
367	>	assertNull(q.poll());
368		}
369
370	<	public void testTimedPoll0() {
371	<	try {
372	<	PriorityBlockingQueue q = populatedQueue(SIZE);
373	<	for (int i = 0; i < SIZE; ++i) {
374	<	assertEquals(i, ((Integer)q.poll(0, TimeUnit.MILLISECONDS)).intValue());
375	<	}
376	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
377	<	} catch (InterruptedException e){
378	<	fail("Unexpected exception");
374	<	}
370	>	/**
371	>	* timed poll with zero timeout succeeds when non-empty, else times out
372	>	*/
373	>	public void testTimedPoll0() throws InterruptedException {
374	>	PriorityBlockingQueue q = populatedQueue(SIZE);
375	>	for (int i = 0; i < SIZE; ++i) {
376	>	assertEquals(i, q.poll(0, MILLISECONDS));
377	>	}
378	>	assertNull(q.poll(0, MILLISECONDS));
379		}
380
381	<	public void testTimedPoll() {
382	<	try {
383	<	PriorityBlockingQueue q = populatedQueue(SIZE);
384	<	for (int i = 0; i < SIZE; ++i) {
385	<	assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
386	<	}
387	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
388	<	} catch (InterruptedException e){
389	<	fail("Unexpected exception");
390	<	}
391	<	}
392	<
393	<	public void testInterruptedTimedPoll(){
394	<	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	<	}
381	>	/**
382	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
383	>	*/
384	>	public void testTimedPoll() throws InterruptedException {
385	>	PriorityBlockingQueue<Integer> q = populatedQueue(SIZE);
386	>	for (int i = 0; i < SIZE; ++i) {
387	>	long startTime = System.nanoTime();
388	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
389	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
390	>	}
391	>	long startTime = System.nanoTime();
392	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
393	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
394	>	checkEmpty(q);
395		}
396
397	<	public void testTimedPollWithOffer(){
398	<	final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
399	<	Thread t = new Thread(new Runnable() {
400	<	public void run(){
401	<	try {
402	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
403	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
404	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
405	<	threadFail("Should block");
406	<	} catch (InterruptedException success) { }
407	<	}
408	<	});
409	<	try {
410	<	t.start();
411	<	Thread.sleep(SMALL_DELAY_MS);
412	<	assertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
413	<	t.interrupt();
414	<	t.join();
415	<	} catch (Exception e){
431	<	fail("Unexpected exception");
432	<	}
433	<	}
397	>	/**
398	>	* Interrupted timed poll throws InterruptedException instead of
399	>	* returning timeout status
400	>	*/
401	>	public void testInterruptedTimedPoll() throws InterruptedException {
402	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
403	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
404	>	Thread t = newStartedThread(new CheckedRunnable() {
405	>	public void realRun() throws InterruptedException {
406	>	long startTime = System.nanoTime();
407	>	for (int i = 0; i < SIZE; i++)
408	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
409	>
410	>	Thread.currentThread().interrupt();
411	>	try {
412	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
413	>	shouldThrow();
414	>	} catch (InterruptedException success) {}
415	>	assertFalse(Thread.interrupted());
416
417	+	pleaseInterrupt.countDown();
418	+	try {
419	+	q.poll(LONG_DELAY_MS, MILLISECONDS);
420	+	shouldThrow();
421	+	} catch (InterruptedException success) {}
422	+	assertFalse(Thread.interrupted());
423	+
424	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
425	+	}});
426	+
427	+	await(pleaseInterrupt);
428	+	assertThreadBlocks(t, Thread.State.TIMED_WAITING);
429	+	t.interrupt();
430	+	awaitTermination(t);
431	+	}
432
433	<	public void testPeek(){
433	>	/**
434	>	* peek returns next element, or null if empty
435	>	*/
436	>	public void testPeek() {
437		PriorityBlockingQueue q = populatedQueue(SIZE);
438		for (int i = 0; i < SIZE; ++i) {
439	<	assertEquals(i, ((Integer)q.peek()).intValue());
440	<	q.poll();
439	>	assertEquals(i, q.peek());
440	>	assertEquals(i, q.poll());
441		assertTrue(q.peek() == null ||
442	<	i != ((Integer)q.peek()).intValue());
442	>	!q.peek().equals(i));
443		}
444	<	assertNull(q.peek());
444	>	assertNull(q.peek());
445		}
446
447	<	public void testElement(){
447	>	/**
448	>	* element returns next element, or throws NSEE if empty
449	>	*/
450	>	public void testElement() {
451		PriorityBlockingQueue q = populatedQueue(SIZE);
452		for (int i = 0; i < SIZE; ++i) {
453	<	assertEquals(i, ((Integer)q.element()).intValue());
454	<	q.poll();
453	>	assertEquals(i, q.element());
454	>	assertEquals(i, q.poll());
455		}
456		try {
457		q.element();
458	<	fail("no such element");
459	<	}
457	<	catch (NoSuchElementException success) {}
458	>	shouldThrow();
459	>	} catch (NoSuchElementException success) {}
460		}
461
462	<	public void testRemove(){
462	>	/**
463	>	* remove removes next element, or throws NSEE if empty
464	>	*/
465	>	public void testRemove() {
466		PriorityBlockingQueue q = populatedQueue(SIZE);
467		for (int i = 0; i < SIZE; ++i) {
468	<	assertEquals(i, ((Integer)q.remove()).intValue());
468	>	assertEquals(i, q.remove());
469		}
470		try {
471		q.remove();
472	<	fail("remove should throw");
473	<	} catch (NoSuchElementException success){
469	<	}
472	>	shouldThrow();
473	>	} catch (NoSuchElementException success) {}
474		}
475
476	<	public void testRemoveElement(){
477	<	PriorityBlockingQueue q = populatedQueue(SIZE);
478	<	for (int i = 1; i < SIZE; i+=2) {
479	<	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(){
476	>	/**
477	>	* contains(x) reports true when elements added but not yet removed
478	>	*/
479	>	public void testContains() {
480		PriorityBlockingQueue q = populatedQueue(SIZE);
481		for (int i = 0; i < SIZE; ++i) {
482		assertTrue(q.contains(new Integer(i)));
#	Line 490 | Line 485 | public class PriorityBlockingQueueTest e
485		}
486		}
487
488	<	public void testClear(){
488	>	/**
489	>	* clear removes all elements
490	>	*/
491	>	public void testClear() {
492		PriorityBlockingQueue q = populatedQueue(SIZE);
493		q.clear();
494		assertTrue(q.isEmpty());
495		assertEquals(0, q.size());
496	<	assertEquals(NOCAP, q.remainingCapacity());
499	<	q.add(new Integer(1));
496	>	q.add(one);
497		assertFalse(q.isEmpty());
498	+	assertTrue(q.contains(one));
499		q.clear();
500		assertTrue(q.isEmpty());
501		}
502
503	<	public void testContainsAll(){
503	>	/**
504	>	* containsAll(c) is true when c contains a subset of elements
505	>	*/
506	>	public void testContainsAll() {
507		PriorityBlockingQueue q = populatedQueue(SIZE);
508		PriorityBlockingQueue p = new PriorityBlockingQueue(SIZE);
509		for (int i = 0; i < SIZE; ++i) {
#	Line 513 | Line 514 | public class PriorityBlockingQueueTest e
514		assertTrue(p.containsAll(q));
515		}
516
517	<	public void testRetainAll(){
517	>	/**
518	>	* retainAll(c) retains only those elements of c and reports true if changed
519	>	*/
520	>	public void testRetainAll() {
521		PriorityBlockingQueue q = populatedQueue(SIZE);
522		PriorityBlockingQueue p = populatedQueue(SIZE);
523		for (int i = 0; i < SIZE; ++i) {
#	Line 524 | Line 528 | public class PriorityBlockingQueueTest e
528		assertTrue(changed);
529
530		assertTrue(q.containsAll(p));
531	<	assertEquals(SIZE-i, q.size());
531	>	assertEquals(SIZE - i, q.size());
532		p.remove();
533		}
534		}
535
536	<	public void testRemoveAll(){
536	>	/**
537	>	* removeAll(c) removes only those elements of c and reports true if changed
538	>	*/
539	>	public void testRemoveAll() {
540		for (int i = 1; i < SIZE; ++i) {
541		PriorityBlockingQueue q = populatedQueue(SIZE);
542		PriorityBlockingQueue p = populatedQueue(i);
543		assertTrue(q.removeAll(p));
544	<	assertEquals(SIZE-i, q.size());
544	>	assertEquals(SIZE - i, q.size());
545		for (int j = 0; j < i; ++j) {
546	<	Integer I = (Integer)(p.remove());
547	<	assertFalse(q.contains(I));
546	>	Integer x = (Integer)(p.remove());
547	>	assertFalse(q.contains(x));
548		}
549		}
550		}
551
552	<	public void testToArray(){
552	>	/**
553	>	* toArray contains all elements
554	>	*/
555	>	public void testToArray() throws InterruptedException {
556		PriorityBlockingQueue q = populatedQueue(SIZE);
557	<	Object[] o = q.toArray();
557	>	Object[] o = q.toArray();
558		Arrays.sort(o);
559	<	try {
560	<	for(int i = 0; i < o.length; i++)
551	<	assertEquals(o[i], q.take());
552	<	} catch (InterruptedException e){
553	<	fail("Unexpected exception");
554	<	}
559	>	for (int i = 0; i < o.length; i++)
560	>	assertSame(o[i], q.take());
561		}
562
563	<	public void testToArray2(){
564	<	PriorityBlockingQueue q = populatedQueue(SIZE);
565	<	Integer[] ints = new Integer[SIZE];
566	<	ints = (Integer[])q.toArray(ints);
563	>	/**
564	>	* toArray(a) contains all elements
565	>	*/
566	>	public void testToArray2() throws InterruptedException {
567	>	PriorityBlockingQueue<Integer> q = populatedQueue(SIZE);
568	>	Integer[] ints = new Integer[SIZE];
569	>	Integer[] array = q.toArray(ints);
570	>	assertSame(ints, array);
571		Arrays.sort(ints);
572	<	try {
573	<	for(int i = 0; i < ints.length; i++)
574	<	assertEquals(ints[i], q.take());
575	<	} catch (InterruptedException e){
576	<	fail("Unexpected exception");
577	<	}
578	<	}
579	<
580	<	public void testIterator(){
581	<	PriorityBlockingQueue q = populatedQueue(SIZE);
582	<	int i = 0;
583	<	Iterator it = q.iterator();
584	<	while(it.hasNext()) {
572	>	for (int i = 0; i < ints.length; i++)
573	>	assertSame(ints[i], q.take());
574	>	}
575	>
576	>	/**
577	>	* toArray(incompatible array type) throws ArrayStoreException
578	>	*/
579	>	public void testToArray1_BadArg() {
580	>	PriorityBlockingQueue q = populatedQueue(SIZE);
581	>	try {
582	>	q.toArray(new String[10]);
583	>	shouldThrow();
584	>	} catch (ArrayStoreException success) {}
585	>	}
586	>
587	>	/**
588	>	* iterator iterates through all elements
589	>	*/
590	>	public void testIterator() {
591	>	PriorityBlockingQueue q = populatedQueue(SIZE);
592	>	Iterator it = q.iterator();
593	>	int i;
594	>	for (i = 0; it.hasNext(); i++)
595		assertTrue(q.contains(it.next()));
576	–	++i;
577	–	}
596		assertEquals(i, SIZE);
597	+	assertIteratorExhausted(it);
598		}
599
600	<	public void testIteratorRemove () {
600	>	/**
601	>	* iterator of empty collection has no elements
602	>	*/
603	>	public void testEmptyIterator() {
604	>	assertIteratorExhausted(new PriorityBlockingQueue().iterator());
605	>	}
606
607	+	/**
608	+	* iterator.remove removes current element
609	+	*/
610	+	public void testIteratorRemove() {
611		final PriorityBlockingQueue q = new PriorityBlockingQueue(3);
584	–
612		q.add(new Integer(2));
613		q.add(new Integer(1));
614		q.add(new Integer(3));
#	Line 596 | Line 623 | public class PriorityBlockingQueueTest e
623		assertFalse(it.hasNext());
624		}
625
626	<
627	<	public void testToString(){
626	>	/**
627	>	* toString contains toStrings of elements
628	>	*/
629	>	public void testToString() {
630		PriorityBlockingQueue q = populatedQueue(SIZE);
631		String s = q.toString();
632		for (int i = 0; i < SIZE; ++i) {
633	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
633	>	assertTrue(s.contains(String.valueOf(i)));
634		}
635	<	}
635	>	}
636
637	+	/**
638	+	* timed poll transfers elements across Executor tasks
639	+	*/
640		public void testPollInExecutor() {
609	–
641		final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
642	+	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
643	+	final ExecutorService executor = Executors.newFixedThreadPool(2);
644	+	try (PoolCleaner cleaner = cleaner(executor)) {
645	+	executor.execute(new CheckedRunnable() {
646	+	public void realRun() throws InterruptedException {
647	+	assertNull(q.poll());
648	+	threadsStarted.await();
649	+	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
650	+	checkEmpty(q);
651	+	}});
652
653	<	ExecutorService executor = Executors.newFixedThreadPool(2);
653	>	executor.execute(new CheckedRunnable() {
654	>	public void realRun() throws InterruptedException {
655	>	threadsStarted.await();
656	>	q.put(one);
657	>	}});
658	>	}
659	>	}
660
661	<	executor.execute(new Runnable() {
662	<	public void run() {
663	<	threadAssertNull(q.poll());
664	<	try {
665	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
666	<	threadAssertTrue(q.isEmpty());
667	<	}
668	<	catch (InterruptedException e) {
669	<	threadFail("should not be interrupted");
670	<	}
671	<	}
672	<	});
661	>	/**
662	>	* A deserialized/reserialized queue has same elements
663	>	*/
664	>	public void testSerialization() throws Exception {
665	>	Queue x = populatedQueue(SIZE);
666	>	Queue y = serialClone(x);
667	>
668	>	assertNotSame(x, y);
669	>	assertEquals(x.size(), y.size());
670	>	while (!x.isEmpty()) {
671	>	assertFalse(y.isEmpty());
672	>	assertEquals(x.remove(), y.remove());
673	>	}
674	>	assertTrue(y.isEmpty());
675	>	}
676
677	<	executor.execute(new Runnable() {
678	<	public void run() {
679	<	try {
680	<	Thread.sleep(SMALL_DELAY_MS);
681	<	q.put(new Integer(1));
682	<	}
683	<	catch (InterruptedException e) {
684	<	threadFail("should not be interrupted");
685	<	}
686	<	}
687	<	});
688	<
689	<	joinPool(executor);
677	>	/**
678	>	* drainTo(c) empties queue into another collection c
679	>	*/
680	>	public void testDrainTo() {
681	>	PriorityBlockingQueue q = populatedQueue(SIZE);
682	>	ArrayList l = new ArrayList();
683	>	q.drainTo(l);
684	>	assertEquals(0, q.size());
685	>	assertEquals(SIZE, l.size());
686	>	for (int i = 0; i < SIZE; ++i)
687	>	assertEquals(l.get(i), new Integer(i));
688	>	q.add(zero);
689	>	q.add(one);
690	>	assertFalse(q.isEmpty());
691	>	assertTrue(q.contains(zero));
692	>	assertTrue(q.contains(one));
693	>	l.clear();
694	>	q.drainTo(l);
695	>	assertEquals(0, q.size());
696	>	assertEquals(2, l.size());
697	>	for (int i = 0; i < 2; ++i)
698	>	assertEquals(l.get(i), new Integer(i));
699	>	}
700
701	+	/**
702	+	* drainTo empties queue
703	+	*/
704	+	public void testDrainToWithActivePut() throws InterruptedException {
705	+	final PriorityBlockingQueue q = populatedQueue(SIZE);
706	+	Thread t = new Thread(new CheckedRunnable() {
707	+	public void realRun() {
708	+	q.put(new Integer(SIZE + 1));
709	+	}});
710	+
711	+	t.start();
712	+	ArrayList l = new ArrayList();
713	+	q.drainTo(l);
714	+	assertTrue(l.size() >= SIZE);
715	+	for (int i = 0; i < SIZE; ++i)
716	+	assertEquals(l.get(i), new Integer(i));
717	+	t.join();
718	+	assertTrue(q.size() + l.size() >= SIZE);
719		}
720
721	<	public void testSerialization() {
722	<	PriorityBlockingQueue q = populatedQueue(SIZE);
723	<	try {
724	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
725	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
726	<	out.writeObject(q);
727	<	out.close();
728	<
729	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
730	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
731	<	PriorityBlockingQueue r = (PriorityBlockingQueue)in.readObject();
732	<	assertEquals(q.size(), r.size());
733	<	while (!q.isEmpty())
734	<	assertEquals(q.remove(), r.remove());
735	<	} catch(Exception e){
736	<	fail("unexpected exception");
721	>	/**
722	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
723	>	*/
724	>	public void testDrainToN() {
725	>	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE * 2);
726	>	for (int i = 0; i < SIZE + 2; ++i) {
727	>	for (int j = 0; j < SIZE; j++)
728	>	assertTrue(q.offer(new Integer(j)));
729	>	ArrayList l = new ArrayList();
730	>	q.drainTo(l, i);
731	>	int k = (i < SIZE) ? i : SIZE;
732	>	assertEquals(k, l.size());
733	>	assertEquals(SIZE - k, q.size());
734	>	for (int j = 0; j < k; ++j)
735	>	assertEquals(l.get(j), new Integer(j));
736	>	do {} while (q.poll() != null);
737	>	}
738	>	}
739	>
740	>	/**
741	>	* remove(null), contains(null) always return false
742	>	*/
743	>	public void testNeverContainsNull() {
744	>	Collection<?>[] qs = {
745	>	new PriorityBlockingQueue<Object>(),
746	>	populatedQueue(2),
747	>	};
748	>
749	>	for (Collection<?> q : qs) {
750	>	assertFalse(q.contains(null));
751	>	assertFalse(q.remove(null));
752		}
753		}
754

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