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

Comparing jsr166/src/test/tck/ArrayBlockingQueueTest.java (file contents):
Revision 1.2 by dl, Sun Sep 7 20:39:11 2003 UTC vs.
Revision 1.56 by jsr166, Thu May 30 03:28:55 2013 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.*;
13	<
14	<	public class ArrayBlockingQueueTest extends TestCase {
15	<
16	<	private static int N = 10;
17	<	private static long SHORT_DELAY_MS = 100;
18	<	private static long MEDIUM_DELAY_MS = 1000;
19	<	private static long LONG_DELAY_MS = 10000;
10	>	import java.util.Arrays;
11	>	import java.util.ArrayList;
12	>	import java.util.Collection;
13	>	import java.util.Iterator;
14	>	import java.util.NoSuchElementException;
15	>	import java.util.Queue;
16	>	import java.util.concurrent.ArrayBlockingQueue;
17	>	import java.util.concurrent.BlockingQueue;
18	>	import java.util.concurrent.CountDownLatch;
19	>	import java.util.concurrent.Executors;
20	>	import java.util.concurrent.ExecutorService;
21	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
22	>
23	>	public class ArrayBlockingQueueTest extends JSR166TestCase {
24	>
25	>	public static class Fair extends BlockingQueueTest {
26	>	protected BlockingQueue emptyCollection() {
27	>	return new ArrayBlockingQueue(SIZE, true);
28	>	}
29	>	}
30	>
31	>	public static class NonFair extends BlockingQueueTest {
32	>	protected BlockingQueue emptyCollection() {
33	>	return new ArrayBlockingQueue(SIZE, false);
34	>	}
35	>	}
36
37		public static void main(String[] args) {
38	<	junit.textui.TestRunner.run (suite());
38	>	junit.textui.TestRunner.run(suite());
39		}
40
41		public static Test suite() {
42	<	return new TestSuite(ArrayBlockingQueueTest.class);
42	>	return newTestSuite(ArrayBlockingQueueTest.class,
43	>	new Fair().testSuite(),
44	>	new NonFair().testSuite());
45		}
46
47		/**
48	<	* Create a queue of given size containing consecutive
48	>	* Returns a new queue of given size containing consecutive
49		* Integers 0 ... n.
50		*/
51	<	private ArrayBlockingQueue fullQueue(int n) {
52	<	ArrayBlockingQueue q = new ArrayBlockingQueue(n);
51	>	private ArrayBlockingQueue<Integer> populatedQueue(int n) {
52	>	ArrayBlockingQueue<Integer> q = new ArrayBlockingQueue<Integer>(n);
53		assertTrue(q.isEmpty());
54	<	for(int i = 0; i < n; i++)
55	<	assertTrue(q.offer(new Integer(i)));
54	>	for (int i = 0; i < n; i++)
55	>	assertTrue(q.offer(new Integer(i)));
56		assertFalse(q.isEmpty());
57		assertEquals(0, q.remainingCapacity());
58	<	assertEquals(n, q.size());
58	>	assertEquals(n, q.size());
59		return q;
60		}
61	<
62	<	public void testConstructor1(){
63	<	assertEquals(N, new ArrayBlockingQueue(N).remainingCapacity());
61	>
62	>	/**
63	>	* A new queue has the indicated capacity
64	>	*/
65	>	public void testConstructor1() {
66	>	assertEquals(SIZE, new ArrayBlockingQueue(SIZE).remainingCapacity());
67		}
68
69	<	public void testConstructor2(){
69	>	/**
70	>	* Constructor throws IAE if capacity argument nonpositive
71	>	*/
72	>	public void testConstructor2() {
73		try {
74	<	ArrayBlockingQueue q = new ArrayBlockingQueue(0);
75	<	fail("Cannot make zero-sized");
76	<	}
52	<	catch (IllegalArgumentException success) {}
74	>	new ArrayBlockingQueue(0);
75	>	shouldThrow();
76	>	} catch (IllegalArgumentException success) {}
77		}
78
79	<	public void testConstructor3(){
80	<
79	>	/**
80	>	* Initializing from null Collection throws NPE
81	>	*/
82	>	public void testConstructor3() {
83		try {
84	<	ArrayBlockingQueue q = new ArrayBlockingQueue(1, true, null);
85	<	fail("Cannot make from null collection");
86	<	}
61	<	catch (NullPointerException success) {}
84	>	new ArrayBlockingQueue(1, true, null);
85	>	shouldThrow();
86	>	} catch (NullPointerException success) {}
87		}
88
89	<	public void testConstructor4(){
89	>	/**
90	>	* Initializing from Collection of null elements throws NPE
91	>	*/
92	>	public void testConstructor4() {
93	>	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
94		try {
95	<	Integer[] ints = new Integer[N];
96	<	ArrayBlockingQueue q = new ArrayBlockingQueue(N, false, Arrays.asList(ints));
97	<	fail("Cannot make with null elements");
69	<	}
70	<	catch (NullPointerException success) {}
95	>	new ArrayBlockingQueue(SIZE, false, elements);
96	>	shouldThrow();
97	>	} catch (NullPointerException success) {}
98		}
99
100	<	public void testConstructor5(){
101	<	try {
102	<	Integer[] ints = new Integer[N];
103	<	for (int i = 0; i < N-1; ++i)
104	<	ints[i] = new Integer(i);
105	<	ArrayBlockingQueue q = new ArrayBlockingQueue(N, false, Arrays.asList(ints));
106	<	fail("Cannot make with null elements");
107	<	}
108	<	catch (NullPointerException success) {}
100	>	/**
101	>	* Initializing from Collection with some null elements throws NPE
102	>	*/
103	>	public void testConstructor5() {
104	>	Integer[] ints = new Integer[SIZE];
105	>	for (int i = 0; i < SIZE-1; ++i)
106	>	ints[i] = i;
107	>	Collection<Integer> elements = Arrays.asList(ints);
108	>	try {
109	>	new ArrayBlockingQueue(SIZE, false, Arrays.asList(ints));
110	>	shouldThrow();
111	>	} catch (NullPointerException success) {}
112		}
113
114	<	public void testConstructor6(){
115	<	try {
116	<	Integer[] ints = new Integer[N];
117	<	for (int i = 0; i < N; ++i)
118	<	ints[i] = new Integer(i);
119	<	ArrayBlockingQueue q = new ArrayBlockingQueue(1, false, Arrays.asList(ints));
120	<	fail("Cannot make with insufficient capacity");
121	<	}
122	<	catch (IllegalArgumentException success) {}
114	>	/**
115	>	* Initializing from too large collection throws IAE
116	>	*/
117	>	public void testConstructor6() {
118	>	Integer[] ints = new Integer[SIZE];
119	>	for (int i = 0; i < SIZE; ++i)
120	>	ints[i] = i;
121	>	Collection<Integer> elements = Arrays.asList(ints);
122	>	try {
123	>	new ArrayBlockingQueue(SIZE - 1, false, elements);
124	>	shouldThrow();
125	>	} catch (IllegalArgumentException success) {}
126		}
127
128	<	public void testConstructor7(){
129	<	try {
130	<	Integer[] ints = new Integer[N];
131	<	for (int i = 0; i < N; ++i)
132	<	ints[i] = new Integer(i);
133	<	ArrayBlockingQueue q = new ArrayBlockingQueue(N, true, Arrays.asList(ints));
134	<	for (int i = 0; i < N; ++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 testConstructor7() {
132	>	Integer[] ints = new Integer[SIZE];
133	>	for (int i = 0; i < SIZE; ++i)
134	>	ints[i] = i;
135	>	Collection<Integer> elements = Arrays.asList(ints);
136	>	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, true, elements);
137	>	for (int i = 0; i < SIZE; ++i)
138	>	assertEquals(ints[i], q.poll());
139		}
140
141	+	/**
142	+	* Queue transitions from empty to full when elements added
143	+	*/
144		public void testEmptyFull() {
145		ArrayBlockingQueue q = new ArrayBlockingQueue(2);
146		assertTrue(q.isEmpty());
147	<	assertEquals("should have room for 2", 2, q.remainingCapacity());
148	<	q.add(new Integer(1));
147	>	assertEquals(2, q.remainingCapacity());
148	>	q.add(one);
149		assertFalse(q.isEmpty());
150	<	q.add(new Integer(2));
150	>	q.add(two);
151		assertFalse(q.isEmpty());
152	<	assertEquals("queue should be full", 0, q.remainingCapacity());
153	<	assertFalse("offer should be rejected", q.offer(new Integer(3)));
152	>	assertEquals(0, q.remainingCapacity());
153	>	assertFalse(q.offer(three));
154		}
155
156	<	public void testRemainingCapacity(){
157	<	ArrayBlockingQueue q = fullQueue(N);
158	<	for (int i = 0; i < N; ++i) {
156	>	/**
157	>	* remainingCapacity decreases on add, increases on remove
158	>	*/
159	>	public void testRemainingCapacity() {
160	>	ArrayBlockingQueue q = populatedQueue(SIZE);
161	>	for (int i = 0; i < SIZE; ++i) {
162		assertEquals(i, q.remainingCapacity());
163	<	assertEquals(N-i, q.size());
163	>	assertEquals(SIZE-i, q.size());
164		q.remove();
165		}
166	<	for (int i = 0; i < N; ++i) {
167	<	assertEquals(N-i, q.remainingCapacity());
166	>	for (int i = 0; i < SIZE; ++i) {
167	>	assertEquals(SIZE-i, q.remainingCapacity());
168		assertEquals(i, q.size());
169		q.add(new Integer(i));
170		}
171		}
172
173	<	public void testOfferNull(){
174	<	try {
175	<	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
176	<	q.offer(null);
137	<	fail("should throw NPE");
138	<	} catch (NullPointerException success) { }
139	<	}
140	<
141	<	public void testOffer(){
173	>	/**
174	>	* Offer succeeds if not full; fails if full
175	>	*/
176	>	public void testOffer() {
177		ArrayBlockingQueue q = new ArrayBlockingQueue(1);
178	<	assertTrue(q.offer(new Integer(0)));
179	<	assertFalse(q.offer(new Integer(1)));
178	>	assertTrue(q.offer(zero));
179	>	assertFalse(q.offer(one));
180		}
181
182	<	public void testAdd(){
183	<	try {
184	<	ArrayBlockingQueue q = new ArrayBlockingQueue(N);
185	<	for (int i = 0; i < N; ++i) {
182	>	/**
183	>	* add succeeds if not full; throws ISE if full
184	>	*/
185	>	public void testAdd() {
186	>	try {
187	>	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
188	>	for (int i = 0; i < SIZE; ++i) {
189		assertTrue(q.add(new Integer(i)));
190		}
191		assertEquals(0, q.remainingCapacity());
192	<	q.add(new Integer(N));
193	<	} catch (IllegalStateException success){
194	<	}
192	>	q.add(new Integer(SIZE));
193	>	shouldThrow();
194	>	} catch (IllegalStateException success) {}
195		}
196
197	<	public void testAddAll1(){
198	<	try {
199	<	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
200	<	q.addAll(null);
163	<	fail("Cannot add null collection");
164	<	}
165	<	catch (NullPointerException success) {}
166	<	}
167	<	public void testAddAll2(){
197	>	/**
198	>	* addAll(this) throws IAE
199	>	*/
200	>	public void testAddAllSelf() {
201		try {
202	<	ArrayBlockingQueue q = new ArrayBlockingQueue(N);
203	<	Integer[] ints = new Integer[N];
204	<	q.addAll(Arrays.asList(ints));
205	<	fail("Cannot add null elements");
173	<	}
174	<	catch (NullPointerException success) {}
202	>	ArrayBlockingQueue q = populatedQueue(SIZE);
203	>	q.addAll(q);
204	>	shouldThrow();
205	>	} catch (IllegalArgumentException success) {}
206		}
207	<	public void testAddAll3(){
207	>
208	>	/**
209	>	* addAll of a collection with any null elements throws NPE after
210	>	* possibly adding some elements
211	>	*/
212	>	public void testAddAll3() {
213		try {
214	<	ArrayBlockingQueue q = new ArrayBlockingQueue(N);
215	<	Integer[] ints = new Integer[N];
216	<	for (int i = 0; i < N-1; ++i)
214	>	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
215	>	Integer[] ints = new Integer[SIZE];
216	>	for (int i = 0; i < SIZE-1; ++i)
217		ints[i] = new Integer(i);
218		q.addAll(Arrays.asList(ints));
219	<	fail("Cannot add null elements");
220	<	}
185	<	catch (NullPointerException success) {}
219	>	shouldThrow();
220	>	} catch (NullPointerException success) {}
221		}
222	<	public void testAddAll4(){
222	>
223	>	/**
224	>	* addAll throws ISE if not enough room
225	>	*/
226	>	public void testAddAll4() {
227		try {
228		ArrayBlockingQueue q = new ArrayBlockingQueue(1);
229	<	Integer[] ints = new Integer[N];
230	<	for (int i = 0; i < N; ++i)
229	>	Integer[] ints = new Integer[SIZE];
230	>	for (int i = 0; i < SIZE; ++i)
231		ints[i] = new Integer(i);
232		q.addAll(Arrays.asList(ints));
233	<	fail("Cannot add with insufficient capacity");
234	<	}
196	<	catch (IllegalStateException success) {}
197	<	}
198	<	public void testAddAll5(){
199	<	try {
200	<	Integer[] empty = new Integer[0];
201	<	Integer[] ints = new Integer[N];
202	<	for (int i = 0; i < N; ++i)
203	<	ints[i] = new Integer(i);
204	<	ArrayBlockingQueue q = new ArrayBlockingQueue(N);
205	<	assertFalse(q.addAll(Arrays.asList(empty)));
206	<	assertTrue(q.addAll(Arrays.asList(ints)));
207	<	for (int i = 0; i < N; ++i)
208	<	assertEquals(ints[i], q.poll());
209	<	}
210	<	finally {}
211	<	}
212	<
213	<	public void testPutNull() {
214	<	try {
215	<	ArrayBlockingQueue q = new ArrayBlockingQueue(N);
216	<	q.put(null);
217	<	fail("put should throw NPE");
218	<	}
219	<	catch (NullPointerException success){
220	<	}
221	<	catch (InterruptedException ie) {
222	<	fail("Unexpected exception");
223	<	}
224	<	}
225	<
226	<	public void testPut() {
227	<	try {
228	<	ArrayBlockingQueue q = new ArrayBlockingQueue(N);
229	<	for (int i = 0; i < N; ++i) {
230	<	Integer I = new Integer(i);
231	<	q.put(I);
232	<	assertTrue(q.contains(I));
233	<	}
234	<	assertEquals(0, q.remainingCapacity());
235	<	}
236	<	catch (InterruptedException ie) {
237	<	fail("Unexpected exception");
238	<	}
233	>	shouldThrow();
234	>	} catch (IllegalStateException success) {}
235		}
236
237	<	public void testBlockingPut(){
238	<	Thread t = new Thread(new Runnable() {
239	<	public void run() {
240	<	int added = 0;
241	<	try {
242	<	ArrayBlockingQueue q = new ArrayBlockingQueue(N);
243	<	for (int i = 0; i < N; ++i) {
244	<	q.put(new Integer(i));
245	<	++added;
246	<	}
247	<	q.put(new Integer(N));
248	<	fail("put should block");
249	<	} catch (InterruptedException ie){
254	<	assertEquals(added, N);
255	<	}
256	<	}});
257	<	t.start();
258	<	try {
259	<	Thread.sleep(SHORT_DELAY_MS);
260	<	t.interrupt();
261	<	t.join();
262	<	}
263	<	catch (InterruptedException ie) {
264	<	fail("Unexpected exception");
265	<	}
237	>	/**
238	>	* Queue contains all elements, in traversal order, of successful addAll
239	>	*/
240	>	public void testAddAll5() {
241	>	Integer[] empty = new Integer[0];
242	>	Integer[] ints = new Integer[SIZE];
243	>	for (int i = 0; i < SIZE; ++i)
244	>	ints[i] = new Integer(i);
245	>	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
246	>	assertFalse(q.addAll(Arrays.asList(empty)));
247	>	assertTrue(q.addAll(Arrays.asList(ints)));
248	>	for (int i = 0; i < SIZE; ++i)
249	>	assertEquals(ints[i], q.poll());
250		}
251
252	<	public void testPutWithTake() {
253	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
254	<	Thread t = new Thread(new Runnable() {
255	<	public void run(){
256	<	int added = 0;
257	<	try {
258	<	q.put(new Object());
259	<	++added;
260	<	q.put(new Object());
277	<	++added;
278	<	q.put(new Object());
279	<	++added;
280	<	q.put(new Object());
281	<	++added;
282	<	fail("Should block");
283	<	} catch (InterruptedException e){
284	<	assertTrue(added >= 2);
285	<	}
286	<	}
287	<	});
288	<	try {
289	<	t.start();
290	<	Thread.sleep(SHORT_DELAY_MS);
291	<	q.take();
292	<	t.interrupt();
293	<	t.join();
294	<	} catch (Exception e){
295	<	fail("Unexpected exception");
252	>	/**
253	>	* all elements successfully put are contained
254	>	*/
255	>	public void testPut() throws InterruptedException {
256	>	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
257	>	for (int i = 0; i < SIZE; ++i) {
258	>	Integer I = new Integer(i);
259	>	q.put(I);
260	>	assertTrue(q.contains(I));
261		}
262	+	assertEquals(0, q.remainingCapacity());
263		}
264
265	<	public void testTimedOffer() {
266	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
267	<	Thread t = new Thread(new Runnable() {
268	<	public void run(){
269	<	try {
270	<	q.put(new Object());
271	<	q.put(new Object());
272	<	assertFalse(q.offer(new Object(), SHORT_DELAY_MS/2, TimeUnit.MILLISECONDS));
273	<	q.offer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS);
274	<	fail("Should block");
275	<	} catch (InterruptedException success){}
276	<	}
277	<	});
278	<
279	<	try {
280	<	t.start();
281	<	Thread.sleep(SHORT_DELAY_MS);
282	<	t.interrupt();
283	<	t.join();
284	<	} catch (Exception e){
285	<	fail("Unexpected exception");
286	<	}
265	>	/**
266	>	* put blocks interruptibly if full
267	>	*/
268	>	public void testBlockingPut() throws InterruptedException {
269	>	final ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
270	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
271	>	Thread t = newStartedThread(new CheckedRunnable() {
272	>	public void realRun() throws InterruptedException {
273	>	for (int i = 0; i < SIZE; ++i)
274	>	q.put(i);
275	>	assertEquals(SIZE, q.size());
276	>	assertEquals(0, q.remainingCapacity());
277	>
278	>	Thread.currentThread().interrupt();
279	>	try {
280	>	q.put(99);
281	>	shouldThrow();
282	>	} catch (InterruptedException success) {}
283	>	assertFalse(Thread.interrupted());
284	>
285	>	pleaseInterrupt.countDown();
286	>	try {
287	>	q.put(99);
288	>	shouldThrow();
289	>	} catch (InterruptedException success) {}
290	>	assertFalse(Thread.interrupted());
291	>	}});
292	>
293	>	await(pleaseInterrupt);
294	>	assertThreadStaysAlive(t);
295	>	t.interrupt();
296	>	awaitTermination(t);
297	>	assertEquals(SIZE, q.size());
298	>	assertEquals(0, q.remainingCapacity());
299		}
300
301	<	public void testTake(){
302	<	try {
303	<	ArrayBlockingQueue q = fullQueue(N);
304	<	for (int i = 0; i < N; ++i) {
305	<	assertEquals(i, ((Integer)q.take()).intValue());
306	<	}
307	<	} catch (InterruptedException e){
308	<	fail("Unexpected exception");
309	<	}
301	>	/**
302	>	* put blocks interruptibly waiting for take when full
303	>	*/
304	>	public void testPutWithTake() throws InterruptedException {
305	>	final int capacity = 2;
306	>	final ArrayBlockingQueue q = new ArrayBlockingQueue(capacity);
307	>	final CountDownLatch pleaseTake = new CountDownLatch(1);
308	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
309	>	Thread t = newStartedThread(new CheckedRunnable() {
310	>	public void realRun() throws InterruptedException {
311	>	for (int i = 0; i < capacity; i++)
312	>	q.put(i);
313	>	pleaseTake.countDown();
314	>	q.put(86);
315	>
316	>	pleaseInterrupt.countDown();
317	>	try {
318	>	q.put(99);
319	>	shouldThrow();
320	>	} catch (InterruptedException success) {}
321	>	assertFalse(Thread.interrupted());
322	>	}});
323	>
324	>	await(pleaseTake);
325	>	assertEquals(0, q.remainingCapacity());
326	>	assertEquals(0, q.take());
327	>
328	>	await(pleaseInterrupt);
329	>	assertThreadStaysAlive(t);
330	>	t.interrupt();
331	>	awaitTermination(t);
332	>	assertEquals(0, q.remainingCapacity());
333		}
334
335	<	public void testTakeFromEmpty() {
335	>	/**
336	>	* timed offer times out if full and elements not taken
337	>	*/
338	>	public void testTimedOffer() throws InterruptedException {
339		final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
340	<	Thread t = new Thread(new Runnable() {
341	<	public void run(){
342	<	try {
343	<	q.take();
344	<	fail("Should block");
345	<	} catch (InterruptedException success){ }
346	<	}
347	<	});
348	<	try {
349	<	t.start();
350	<	Thread.sleep(SHORT_DELAY_MS);
351	<	t.interrupt();
352	<	t.join();
353	<	} catch (Exception e){
354	<	fail("Unexpected exception");
355	<	}
340	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
341	>	Thread t = newStartedThread(new CheckedRunnable() {
342	>	public void realRun() throws InterruptedException {
343	>	q.put(new Object());
344	>	q.put(new Object());
345	>	long startTime = System.nanoTime();
346	>	assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS));
347	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
348	>	pleaseInterrupt.countDown();
349	>	try {
350	>	q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS);
351	>	shouldThrow();
352	>	} catch (InterruptedException success) {}
353	>	}});
354	>
355	>	await(pleaseInterrupt);
356	>	assertThreadStaysAlive(t);
357	>	t.interrupt();
358	>	awaitTermination(t);
359		}
360
361	<	public void testBlockingTake(){
362	<	Thread t = new Thread(new Runnable() {
363	<	public void run() {
364	<	try {
365	<	ArrayBlockingQueue q = fullQueue(N);
366	<	for (int i = 0; i < N; ++i) {
367	<	assertEquals(i, ((Integer)q.take()).intValue());
361	<	}
362	<	q.take();
363	<	fail("take should block");
364	<	} catch (InterruptedException success){
365	<	}
366	<	}});
367	<	t.start();
368	<	try {
369	<	Thread.sleep(SHORT_DELAY_MS);
370	<	t.interrupt();
371	<	t.join();
372	<	}
373	<	catch (InterruptedException ie) {
374	<	fail("Unexpected exception");
361	>	/**
362	>	* take retrieves elements in FIFO order
363	>	*/
364	>	public void testTake() throws InterruptedException {
365	>	ArrayBlockingQueue q = populatedQueue(SIZE);
366	>	for (int i = 0; i < SIZE; ++i) {
367	>	assertEquals(i, q.take());
368		}
369		}
370
371	+	/**
372	+	* Take removes existing elements until empty, then blocks interruptibly
373	+	*/
374	+	public void testBlockingTake() throws InterruptedException {
375	+	final ArrayBlockingQueue q = populatedQueue(SIZE);
376	+	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
377	+	Thread t = newStartedThread(new CheckedRunnable() {
378	+	public void realRun() throws InterruptedException {
379	+	for (int i = 0; i < SIZE; ++i) {
380	+	assertEquals(i, q.take());
381	+	}
382
383	<	public void testPoll(){
384	<	ArrayBlockingQueue q = fullQueue(N);
385	<	for (int i = 0; i < N; ++i) {
386	<	assertEquals(i, ((Integer)q.poll()).intValue());
387	<	}
388	<	assertNull(q.poll());
385	<	}
383	>	Thread.currentThread().interrupt();
384	>	try {
385	>	q.take();
386	>	shouldThrow();
387	>	} catch (InterruptedException success) {}
388	>	assertFalse(Thread.interrupted());
389
390	<	public void testTimedPoll0() {
391	<	try {
392	<	ArrayBlockingQueue q = fullQueue(N);
393	<	for (int i = 0; i < N; ++i) {
394	<	assertEquals(i, ((Integer)q.poll(0, TimeUnit.MILLISECONDS)).intValue());
395	<	}
396	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
397	<	} catch (InterruptedException e){
398	<	fail("Unexpected exception");
399	<	}
390	>	pleaseInterrupt.countDown();
391	>	try {
392	>	q.take();
393	>	shouldThrow();
394	>	} catch (InterruptedException success) {}
395	>	assertFalse(Thread.interrupted());
396	>	}});
397	>
398	>	await(pleaseInterrupt);
399	>	assertThreadStaysAlive(t);
400	>	t.interrupt();
401	>	awaitTermination(t);
402		}
403
404	<	public void testTimedPoll() {
405	<	try {
406	<	ArrayBlockingQueue q = fullQueue(N);
407	<	for (int i = 0; i < N; ++i) {
408	<	assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
409	<	}
410	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
406	<	} catch (InterruptedException e){
407	<	fail("Unexpected exception");
408	<	}
409	<	}
410	<
411	<	public void testInterruptedTimedPoll(){
412	<	Thread t = new Thread(new Runnable() {
413	<	public void run() {
414	<	try {
415	<	ArrayBlockingQueue q = fullQueue(N);
416	<	for (int i = 0; i < N; ++i) {
417	<	assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
418	<	}
419	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
420	<	} catch (InterruptedException success){
421	<	}
422	<	}});
423	<	t.start();
424	<	try {
425	<	Thread.sleep(SHORT_DELAY_MS);
426	<	t.interrupt();
427	<	t.join();
404	>	/**
405	>	* poll succeeds unless empty
406	>	*/
407	>	public void testPoll() {
408	>	ArrayBlockingQueue q = populatedQueue(SIZE);
409	>	for (int i = 0; i < SIZE; ++i) {
410	>	assertEquals(i, q.poll());
411		}
412	<	catch (InterruptedException ie) {
413	<	fail("Unexpected exception");
412	>	assertNull(q.poll());
413	>	}
414	>
415	>	/**
416	>	* timed poll with zero timeout succeeds when non-empty, else times out
417	>	*/
418	>	public void testTimedPoll0() throws InterruptedException {
419	>	ArrayBlockingQueue q = populatedQueue(SIZE);
420	>	for (int i = 0; i < SIZE; ++i) {
421	>	assertEquals(i, q.poll(0, MILLISECONDS));
422		}
423	+	assertNull(q.poll(0, MILLISECONDS));
424	+	checkEmpty(q);
425		}
426
427	<	public void testTimedPollWithOffer(){
428	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
429	<	Thread t = new Thread(new Runnable() {
430	<	public void run(){
431	<	try {
432	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
433	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
434	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
435	<	fail("Should block");
436	<	} catch (InterruptedException success) { }
427	>	/**
428	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
429	>	*/
430	>	public void testTimedPoll() throws InterruptedException {
431	>	ArrayBlockingQueue q = populatedQueue(SIZE);
432	>	for (int i = 0; i < SIZE; ++i) {
433	>	long startTime = System.nanoTime();
434	>	assertEquals(i, q.poll(LONG_DELAY_MS, MILLISECONDS));
435	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
436	>	}
437	>	long startTime = System.nanoTime();
438	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
439	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
440	>	checkEmpty(q);
441	>	}
442	>
443	>	/**
444	>	* Interrupted timed poll throws InterruptedException instead of
445	>	* returning timeout status
446	>	*/
447	>	public void testInterruptedTimedPoll() throws InterruptedException {
448	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
449	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
450	>	Thread t = newStartedThread(new CheckedRunnable() {
451	>	public void realRun() throws InterruptedException {
452	>	for (int i = 0; i < SIZE; ++i) {
453	>	long t0 = System.nanoTime();
454	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
455	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
456		}
457	<	});
458	<	try {
459	<	t.start();
460	<	Thread.sleep(SHORT_DELAY_MS * 2);
461	<	assertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
462	<	t.interrupt();
463	<	t.join();
464	<	} catch (Exception e){
465	<	fail("Unexpected exception");
466	<	}
467	<	}
468	<
469	<
470	<	public void testPeek(){
471	<	ArrayBlockingQueue q = fullQueue(N);
472	<	for (int i = 0; i < N; ++i) {
473	<	assertEquals(i, ((Integer)q.peek()).intValue());
474	<	q.poll();
457	>	long t0 = System.nanoTime();
458	>	aboutToWait.countDown();
459	>	try {
460	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
461	>	shouldThrow();
462	>	} catch (InterruptedException success) {
463	>	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
464	>	}
465	>	}});
466	>
467	>	aboutToWait.await();
468	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
469	>	t.interrupt();
470	>	awaitTermination(t, MEDIUM_DELAY_MS);
471	>	checkEmpty(q);
472	>	}
473	>
474	>	/**
475	>	* peek returns next element, or null if empty
476	>	*/
477	>	public void testPeek() {
478	>	ArrayBlockingQueue q = populatedQueue(SIZE);
479	>	for (int i = 0; i < SIZE; ++i) {
480	>	assertEquals(i, q.peek());
481	>	assertEquals(i, q.poll());
482		assertTrue(q.peek() == null ||
483	<	i != ((Integer)q.peek()).intValue());
483	>	!q.peek().equals(i));
484		}
485	<	assertNull(q.peek());
485	>	assertNull(q.peek());
486		}
487
488	<	public void testElement(){
489	<	ArrayBlockingQueue q = fullQueue(N);
490	<	for (int i = 0; i < N; ++i) {
491	<	assertEquals(i, ((Integer)q.element()).intValue());
492	<	q.poll();
488	>	/**
489	>	* element returns next element, or throws NSEE if empty
490	>	*/
491	>	public void testElement() {
492	>	ArrayBlockingQueue q = populatedQueue(SIZE);
493	>	for (int i = 0; i < SIZE; ++i) {
494	>	assertEquals(i, q.element());
495	>	assertEquals(i, q.poll());
496		}
497		try {
498		q.element();
499	<	fail("no such element");
500	<	}
479	<	catch (NoSuchElementException success) {}
499	>	shouldThrow();
500	>	} catch (NoSuchElementException success) {}
501		}
502
503	<	public void testRemove(){
504	<	ArrayBlockingQueue q = fullQueue(N);
505	<	for (int i = 0; i < N; ++i) {
506	<	assertEquals(i, ((Integer)q.remove()).intValue());
503	>	/**
504	>	* remove removes next element, or throws NSEE if empty
505	>	*/
506	>	public void testRemove() {
507	>	ArrayBlockingQueue q = populatedQueue(SIZE);
508	>	for (int i = 0; i < SIZE; ++i) {
509	>	assertEquals(i, q.remove());
510		}
511		try {
512		q.remove();
513	<	fail("remove should throw");
514	<	} catch (NoSuchElementException success){
491	<	}
513	>	shouldThrow();
514	>	} catch (NoSuchElementException success) {}
515		}
516
517	<	public void testRemoveElement(){
518	<	ArrayBlockingQueue q = fullQueue(N);
519	<	for (int i = 1; i < N; i+=2) {
520	<	assertTrue(q.remove(new Integer(i)));
521	<	}
522	<	for (int i = 0; i < N; i+=2) {
500	<	assertTrue(q.remove(new Integer(i)));
501	<	assertFalse(q.remove(new Integer(i+1)));
502	<	}
503	<	assertTrue(q.isEmpty());
504	<	}
505	<
506	<	public void testContains(){
507	<	ArrayBlockingQueue q = fullQueue(N);
508	<	for (int i = 0; i < N; ++i) {
517	>	/**
518	>	* contains(x) reports true when elements added but not yet removed
519	>	*/
520	>	public void testContains() {
521	>	ArrayBlockingQueue q = populatedQueue(SIZE);
522	>	for (int i = 0; i < SIZE; ++i) {
523		assertTrue(q.contains(new Integer(i)));
524	<	q.poll();
524	>	assertEquals(i, q.poll());
525		assertFalse(q.contains(new Integer(i)));
526		}
527		}
528
529	<	public void testClear(){
530	<	ArrayBlockingQueue q = fullQueue(N);
529	>	/**
530	>	* clear removes all elements
531	>	*/
532	>	public void testClear() {
533	>	ArrayBlockingQueue q = populatedQueue(SIZE);
534		q.clear();
535		assertTrue(q.isEmpty());
536		assertEquals(0, q.size());
537	<	assertEquals(N, q.remainingCapacity());
538	<	q.add(new Integer(1));
537	>	assertEquals(SIZE, q.remainingCapacity());
538	>	q.add(one);
539		assertFalse(q.isEmpty());
540	+	assertTrue(q.contains(one));
541		q.clear();
542		assertTrue(q.isEmpty());
543		}
544
545	<	public void testContainsAll(){
546	<	ArrayBlockingQueue q = fullQueue(N);
547	<	ArrayBlockingQueue p = new ArrayBlockingQueue(N);
548	<	for (int i = 0; i < N; ++i) {
545	>	/**
546	>	* containsAll(c) is true when c contains a subset of elements
547	>	*/
548	>	public void testContainsAll() {
549	>	ArrayBlockingQueue q = populatedQueue(SIZE);
550	>	ArrayBlockingQueue p = new ArrayBlockingQueue(SIZE);
551	>	for (int i = 0; i < SIZE; ++i) {
552		assertTrue(q.containsAll(p));
553		assertFalse(p.containsAll(q));
554		p.add(new Integer(i));
#	Line 535 | Line 556 | public class ArrayBlockingQueueTest exte
556		assertTrue(p.containsAll(q));
557		}
558
559	<	public void testRetainAll(){
560	<	ArrayBlockingQueue q = fullQueue(N);
561	<	ArrayBlockingQueue p = fullQueue(N);
562	<	for (int i = 0; i < N; ++i) {
559	>	/**
560	>	* retainAll(c) retains only those elements of c and reports true if changed
561	>	*/
562	>	public void testRetainAll() {
563	>	ArrayBlockingQueue q = populatedQueue(SIZE);
564	>	ArrayBlockingQueue p = populatedQueue(SIZE);
565	>	for (int i = 0; i < SIZE; ++i) {
566		boolean changed = q.retainAll(p);
567		if (i == 0)
568		assertFalse(changed);
#	Line 546 | Line 570 | public class ArrayBlockingQueueTest exte
570		assertTrue(changed);
571
572		assertTrue(q.containsAll(p));
573	<	assertEquals(N-i, q.size());
573	>	assertEquals(SIZE-i, q.size());
574		p.remove();
575		}
576		}
577
578	<	public void testRemoveAll(){
579	<	for (int i = 1; i < N; ++i) {
580	<	ArrayBlockingQueue q = fullQueue(N);
581	<	ArrayBlockingQueue p = fullQueue(i);
578	>	/**
579	>	* removeAll(c) removes only those elements of c and reports true if changed
580	>	*/
581	>	public void testRemoveAll() {
582	>	for (int i = 1; i < SIZE; ++i) {
583	>	ArrayBlockingQueue q = populatedQueue(SIZE);
584	>	ArrayBlockingQueue p = populatedQueue(i);
585		assertTrue(q.removeAll(p));
586	<	assertEquals(N-i, q.size());
586	>	assertEquals(SIZE-i, q.size());
587		for (int j = 0; j < i; ++j) {
588		Integer I = (Integer)(p.remove());
589		assertFalse(q.contains(I));
#	Line 564 | Line 591 | public class ArrayBlockingQueueTest exte
591		}
592		}
593
594	+	void checkToArray(ArrayBlockingQueue q) {
595	+	int size = q.size();
596	+	Object[] o = q.toArray();
597	+	assertEquals(size, o.length);
598	+	Iterator it = q.iterator();
599	+	for (int i = 0; i < size; i++) {
600	+	Integer x = (Integer) it.next();
601	+	assertEquals((Integer)o[0] + i, (int) x);
602	+	assertSame(o[i], x);
603	+	}
604	+	}
605
606	<	public void testToArray(){
607	<	ArrayBlockingQueue q = fullQueue(N);
608	<	Object[] o = q.toArray();
609	<	try {
610	<	for(int i = 0; i < o.length; i++)
611	<	assertEquals(o[i], q.take());
612	<	} catch (InterruptedException e){
613	<	fail("Unexpected exception");
614	<	}
615	<	}
616	<
617	<	public void testToArray2(){
618	<	ArrayBlockingQueue q = fullQueue(N);
619	<	Integer[] ints = new Integer[N];
620	<	ints = (Integer[])q.toArray(ints);
621	<	try {
622	<	for(int i = 0; i < ints.length; i++)
623	<	assertEquals(ints[i], q.take());
624	<	} catch (InterruptedException e){
625	<	fail("Unexpected exception");
588	<	}
589	<	}
590	<
591	<	public void testIterator(){
592	<	ArrayBlockingQueue q = fullQueue(N);
593	<	Iterator it = q.iterator();
594	<	try {
595	<	while(it.hasNext()){
596	<	assertEquals(it.next(), q.take());
597	<	}
598	<	} catch (InterruptedException e){
599	<	fail("Unexpected exception");
600	<	}
606	>	/**
607	>	* toArray() contains all elements in FIFO order
608	>	*/
609	>	public void testToArray() {
610	>	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
611	>	for (int i = 0; i < SIZE; i++) {
612	>	checkToArray(q);
613	>	q.add(i);
614	>	}
615	>	// Provoke wraparound
616	>	for (int i = 0; i < SIZE; i++) {
617	>	checkToArray(q);
618	>	assertEquals(i, q.poll());
619	>	checkToArray(q);
620	>	q.add(SIZE+i);
621	>	}
622	>	for (int i = 0; i < SIZE; i++) {
623	>	checkToArray(q);
624	>	assertEquals(SIZE+i, q.poll());
625	>	}
626		}
627
628	<	public void testIteratorOrdering() {
628	>	void checkToArray2(ArrayBlockingQueue q) {
629	>	int size = q.size();
630	>	Integer[] a1 = size == 0 ? null : new Integer[size-1];
631	>	Integer[] a2 = new Integer[size];
632	>	Integer[] a3 = new Integer[size+2];
633	>	if (size > 0) Arrays.fill(a1, 42);
634	>	Arrays.fill(a2, 42);
635	>	Arrays.fill(a3, 42);
636	>	Integer[] b1 = size == 0 ? null : (Integer[]) q.toArray(a1);
637	>	Integer[] b2 = (Integer[]) q.toArray(a2);
638	>	Integer[] b3 = (Integer[]) q.toArray(a3);
639	>	assertSame(a2, b2);
640	>	assertSame(a3, b3);
641	>	Iterator it = q.iterator();
642	>	for (int i = 0; i < size; i++) {
643	>	Integer x = (Integer) it.next();
644	>	assertSame(b1[i], x);
645	>	assertEquals(b1[0] + i, (int) x);
646	>	assertSame(b2[i], x);
647	>	assertSame(b3[i], x);
648	>	}
649	>	assertNull(a3[size]);
650	>	assertEquals(42, (int) a3[size+1]);
651	>	if (size > 0) {
652	>	assertNotSame(a1, b1);
653	>	assertEquals(size, b1.length);
654	>	for (int i = 0; i < a1.length; i++) {
655	>	assertEquals(42, (int) a1[i]);
656	>	}
657	>	}
658	>	}
659
660	+	/**
661	+	* toArray(a) contains all elements in FIFO order
662	+	*/
663	+	public void testToArray2() {
664	+	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
665	+	for (int i = 0; i < SIZE; i++) {
666	+	checkToArray2(q);
667	+	q.add(i);
668	+	}
669	+	// Provoke wraparound
670	+	for (int i = 0; i < SIZE; i++) {
671	+	checkToArray2(q);
672	+	assertEquals(i, q.poll());
673	+	checkToArray2(q);
674	+	q.add(SIZE+i);
675	+	}
676	+	for (int i = 0; i < SIZE; i++) {
677	+	checkToArray2(q);
678	+	assertEquals(SIZE+i, q.poll());
679	+	}
680	+	}
681	+
682	+	/**
683	+	* toArray(incompatible array type) throws ArrayStoreException
684	+	*/
685	+	public void testToArray1_BadArg() {
686	+	ArrayBlockingQueue q = populatedQueue(SIZE);
687	+	try {
688	+	q.toArray(new String[10]);
689	+	shouldThrow();
690	+	} catch (ArrayStoreException success) {}
691	+	}
692	+
693	+	/**
694	+	* iterator iterates through all elements
695	+	*/
696	+	public void testIterator() throws InterruptedException {
697	+	ArrayBlockingQueue q = populatedQueue(SIZE);
698	+	Iterator it = q.iterator();
699	+	while (it.hasNext()) {
700	+	assertEquals(it.next(), q.take());
701	+	}
702	+	}
703	+
704	+	/**
705	+	* iterator.remove removes current element
706	+	*/
707	+	public void testIteratorRemove() {
708		final ArrayBlockingQueue q = new ArrayBlockingQueue(3);
709	+	q.add(two);
710	+	q.add(one);
711	+	q.add(three);
712	+
713	+	Iterator it = q.iterator();
714	+	it.next();
715	+	it.remove();
716	+
717	+	it = q.iterator();
718	+	assertSame(it.next(), one);
719	+	assertSame(it.next(), three);
720	+	assertFalse(it.hasNext());
721	+	}
722
723	<	q.add(new Integer(1));
724	<	q.add(new Integer(2));
725	<	q.add(new Integer(3));
723	>	/**
724	>	* iterator ordering is FIFO
725	>	*/
726	>	public void testIteratorOrdering() {
727	>	final ArrayBlockingQueue q = new ArrayBlockingQueue(3);
728	>	q.add(one);
729	>	q.add(two);
730	>	q.add(three);
731
732		assertEquals("queue should be full", 0, q.remainingCapacity());
733
734		int k = 0;
735		for (Iterator it = q.iterator(); it.hasNext();) {
736	<	int i = ((Integer)(it.next())).intValue();
616	<	assertEquals("items should come out in order", ++k, i);
736	>	assertEquals(++k, it.next());
737		}
738	<
619	<	assertEquals("should go through 3 elements", 3, k);
738	>	assertEquals(3, k);
739		}
740
741	<	public void testWeaklyConsistentIteration () {
742	<
741	>	/**
742	>	* Modifications do not cause iterators to fail
743	>	*/
744	>	public void testWeaklyConsistentIteration() {
745		final ArrayBlockingQueue q = new ArrayBlockingQueue(3);
746	<
747	<	q.add(new Integer(1));
748	<	q.add(new Integer(2));
749	<	q.add(new Integer(3));
750	<
751	<	try {
631	<	for (Iterator it = q.iterator(); it.hasNext();) {
632	<	q.remove();
633	<	it.next();
634	<	}
635	<	}
636	<	catch (ConcurrentModificationException e) {
637	<	fail("weakly consistent iterator; should not get CME");
746	>	q.add(one);
747	>	q.add(two);
748	>	q.add(three);
749	>	for (Iterator it = q.iterator(); it.hasNext();) {
750	>	q.remove();
751	>	it.next();
752		}
753	<
640	<	assertEquals("queue should be empty again", 0, q.size());
753	>	assertEquals(0, q.size());
754		}
755
756	<
757	<	public void testToString(){
758	<	ArrayBlockingQueue q = fullQueue(N);
756	>	/**
757	>	* toString contains toStrings of elements
758	>	*/
759	>	public void testToString() {
760	>	ArrayBlockingQueue q = populatedQueue(SIZE);
761		String s = q.toString();
762	<	for (int i = 0; i < N; ++i) {
763	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
762	>	for (int i = 0; i < SIZE; ++i) {
763	>	assertTrue(s.contains(String.valueOf(i)));
764		}
765	<	}
651	<
765	>	}
766
767	+	/**
768	+	* offer transfers elements across Executor tasks
769	+	*/
770		public void testOfferInExecutor() {
654	–
771		final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
772	<
773	<	q.add(new Integer(1));
658	<	q.add(new Integer(2));
659	<
772	>	q.add(one);
773	>	q.add(two);
774		ExecutorService executor = Executors.newFixedThreadPool(2);
775	+	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
776	+	executor.execute(new CheckedRunnable() {
777	+	public void realRun() throws InterruptedException {
778	+	assertFalse(q.offer(three));
779	+	threadsStarted.await();
780	+	assertTrue(q.offer(three, LONG_DELAY_MS, MILLISECONDS));
781	+	assertEquals(0, q.remainingCapacity());
782	+	}});
783	+
784	+	executor.execute(new CheckedRunnable() {
785	+	public void realRun() throws InterruptedException {
786	+	threadsStarted.await();
787	+	assertEquals(0, q.remainingCapacity());
788	+	assertSame(one, q.take());
789	+	}});
790
791	<	executor.execute(new Runnable() {
663	<	public void run() {
664	<	assertFalse("offer should be rejected", q.offer(new Integer(3)));
665	<	try {
666	<	assertTrue("offer should be accepted", q.offer(new Integer(3), MEDIUM_DELAY_MS * 2, TimeUnit.MILLISECONDS));
667	<	assertEquals(0, q.remainingCapacity());
668	<	}
669	<	catch (InterruptedException e) {
670	<	fail("should not be interrupted");
671	<	}
672	<	}
673	<	});
674	<
675	<	executor.execute(new Runnable() {
676	<	public void run() {
677	<	try {
678	<	Thread.sleep(MEDIUM_DELAY_MS);
679	<	assertEquals("first item in queue should be 1", new Integer(1), q.take());
680	<	}
681	<	catch (InterruptedException e) {
682	<	fail("should not be interrupted");
683	<	}
684	<	}
685	<	});
686	<
687	<	executor.shutdown();
688	<
791	>	joinPool(executor);
792		}
793
794	+	/**
795	+	* timed poll retrieves elements across Executor threads
796	+	*/
797		public void testPollInExecutor() {
692	–
798		final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
799	<
799	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
800		ExecutorService executor = Executors.newFixedThreadPool(2);
801	+	executor.execute(new CheckedRunnable() {
802	+	public void realRun() throws InterruptedException {
803	+	assertNull(q.poll());
804	+	threadsStarted.await();
805	+	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
806	+	checkEmpty(q);
807	+	}});
808	+
809	+	executor.execute(new CheckedRunnable() {
810	+	public void realRun() throws InterruptedException {
811	+	threadsStarted.await();
812	+	q.put(one);
813	+	}});
814
815	<	executor.execute(new Runnable() {
816	<	public void run() {
699	<	assertNull("poll should fail", q.poll());
700	<	try {
701	<	assertTrue(null != q.poll(MEDIUM_DELAY_MS * 2, TimeUnit.MILLISECONDS));
702	<	assertTrue(q.isEmpty());
703	<	}
704	<	catch (InterruptedException e) {
705	<	fail("should not be interrupted");
706	<	}
707	<	}
708	<	});
815	>	joinPool(executor);
816	>	}
817
818	<	executor.execute(new Runnable() {
819	<	public void run() {
820	<	try {
821	<	Thread.sleep(MEDIUM_DELAY_MS);
822	<	q.put(new Integer(1));
823	<	}
824	<	catch (InterruptedException e) {
825	<	fail("should not be interrupted");
826	<	}
827	<	}
828	<	});
829	<
830	<	executor.shutdown();
818	>	/**
819	>	* A deserialized serialized queue has same elements in same order
820	>	*/
821	>	public void testSerialization() throws Exception {
822	>	Queue x = populatedQueue(SIZE);
823	>	Queue y = serialClone(x);
824	>
825	>	assertNotSame(x, y);
826	>	assertEquals(x.size(), y.size());
827	>	assertEquals(x.toString(), y.toString());
828	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
829	>	while (!x.isEmpty()) {
830	>	assertFalse(y.isEmpty());
831	>	assertEquals(x.remove(), y.remove());
832	>	}
833	>	assertTrue(y.isEmpty());
834	>	}
835
836	+	/**
837	+	* drainTo(c) empties queue into another collection c
838	+	*/
839	+	public void testDrainTo() {
840	+	ArrayBlockingQueue q = populatedQueue(SIZE);
841	+	ArrayList l = new ArrayList();
842	+	q.drainTo(l);
843	+	assertEquals(0, q.size());
844	+	assertEquals(SIZE, l.size());
845	+	for (int i = 0; i < SIZE; ++i)
846	+	assertEquals(l.get(i), new Integer(i));
847	+	q.add(zero);
848	+	q.add(one);
849	+	assertFalse(q.isEmpty());
850	+	assertTrue(q.contains(zero));
851	+	assertTrue(q.contains(one));
852	+	l.clear();
853	+	q.drainTo(l);
854	+	assertEquals(0, q.size());
855	+	assertEquals(2, l.size());
856	+	for (int i = 0; i < 2; ++i)
857	+	assertEquals(l.get(i), new Integer(i));
858		}
859
860	<	public void testSerialization() {
861	<	ArrayBlockingQueue q = fullQueue(N);
860	>	/**
861	>	* drainTo empties full queue, unblocking a waiting put.
862	>	*/
863	>	public void testDrainToWithActivePut() throws InterruptedException {
864	>	final ArrayBlockingQueue q = populatedQueue(SIZE);
865	>	Thread t = new Thread(new CheckedRunnable() {
866	>	public void realRun() throws InterruptedException {
867	>	q.put(new Integer(SIZE+1));
868	>	}});
869
870	<	try {
871	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
872	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
873	<	out.writeObject(q);
874	<	out.close();
870	>	t.start();
871	>	ArrayList l = new ArrayList();
872	>	q.drainTo(l);
873	>	assertTrue(l.size() >= SIZE);
874	>	for (int i = 0; i < SIZE; ++i)
875	>	assertEquals(l.get(i), new Integer(i));
876	>	t.join();
877	>	assertTrue(q.size() + l.size() >= SIZE);
878	>	}
879
880	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
881	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
882	<	ArrayBlockingQueue r = (ArrayBlockingQueue)in.readObject();
883	<	assertEquals(q.size(), r.size());
884	<	while (!q.isEmpty())
885	<	assertEquals(q.remove(), r.remove());
886	<	} catch(Exception e){
887	<	fail("unexpected exception");
880	>	/**
881	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
882	>	*/
883	>	public void testDrainToN() {
884	>	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE*2);
885	>	for (int i = 0; i < SIZE + 2; ++i) {
886	>	for (int j = 0; j < SIZE; j++)
887	>	assertTrue(q.offer(new Integer(j)));
888	>	ArrayList l = new ArrayList();
889	>	q.drainTo(l, i);
890	>	int k = (i < SIZE) ? i : SIZE;
891	>	assertEquals(k, l.size());
892	>	assertEquals(SIZE-k, q.size());
893	>	for (int j = 0; j < k; ++j)
894	>	assertEquals(l.get(j), new Integer(j));
895	>	while (q.poll() != null) ;
896		}
897		}
898
746	–
899		}

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