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

Comparing jsr166/src/test/tck/ArrayBlockingQueueTest.java (file contents):
Revision 1.6 by dl, Sun Oct 5 23:00:39 2003 UTC vs.
Revision 1.98 by dl, Tue Jan 26 13:33:05 2021 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 static java.util.concurrent.TimeUnit.MILLISECONDS;
10
11	<	import junit.framework.*;
12	<	import java.util.*;
13	<	import java.util.concurrent.*;
14	<	import java.io.*;
11	>	import java.util.ArrayList;
12	>	import java.util.Arrays;
13	>	import java.util.Collection;
14	>	import java.util.Collections;
15	>	import java.util.Iterator;
16	>	import java.util.NoSuchElementException;
17	>	import java.util.Queue;
18	>	import java.util.concurrent.ArrayBlockingQueue;
19	>	import java.util.concurrent.BlockingQueue;
20	>	import java.util.concurrent.CountDownLatch;
21	>	import java.util.concurrent.Executors;
22	>	import java.util.concurrent.ExecutorService;
23	>	import java.util.concurrent.ThreadLocalRandom;
24	>
25	>	import junit.framework.Test;
26
27		public class ArrayBlockingQueueTest extends JSR166TestCase {
28	+
29		public static void main(String[] args) {
30	<	junit.textui.TestRunner.run (suite());
30	>	main(suite(), args);
31		}
32	+
33		public static Test suite() {
34	<	return new TestSuite(ArrayBlockingQueueTest.class);
34	>	class Implementation implements CollectionImplementation {
35	>	public Class<?> klazz() { return ArrayBlockingQueue.class; }
36	>	public Collection emptyCollection() {
37	>	boolean fair = randomBoolean();
38	>	return populatedQueue(0, SIZE, 2 * SIZE, fair);
39	>	}
40	>	public Object makeElement(int i) { return JSR166TestCase.itemFor(i); }
41	>	public boolean isConcurrent() { return true; }
42	>	public boolean permitsNulls() { return false; }
43	>	}
44	>
45	>	return newTestSuite(
46	>	ArrayBlockingQueueTest.class,
47	>	new Fair().testSuite(),
48	>	new NonFair().testSuite(),
49	>	CollectionTest.testSuite(new Implementation()));
50	>	}
51	>
52	>	public static class Fair extends BlockingQueueTest {
53	>	protected BlockingQueue<Item> emptyCollection() {
54	>	return populatedQueue(0, SIZE, 2 * SIZE, true);
55	>	}
56	>	}
57	>
58	>	public static class NonFair extends BlockingQueueTest {
59	>	protected BlockingQueue<Item> emptyCollection() {
60	>	return populatedQueue(0, SIZE, 2 * SIZE, false);
61	>	}
62		}
63
64		/**
65	<	* Create a queue of given size containing consecutive
66	<	* Integers 0 ... n.
65	>	* Returns a new queue of given size containing consecutive
66	>	* Items 0 ... n - 1.
67		*/
68	<	private ArrayBlockingQueue populatedQueue(int n) {
69	<	ArrayBlockingQueue q = new ArrayBlockingQueue(n);
68	>	static ArrayBlockingQueue<Item> populatedQueue(int n) {
69	>	return populatedQueue(n, n, n, false);
70	>	}
71	>
72	>	/**
73	>	* Returns a new queue of given size containing consecutive
74	>	* Items 0 ... n - 1, with given capacity range and fairness.
75	>	*/
76	>	static ArrayBlockingQueue<Item> populatedQueue(
77	>	int size, int minCapacity, int maxCapacity, boolean fair) {
78	>	ThreadLocalRandom rnd = ThreadLocalRandom.current();
79	>	int capacity = rnd.nextInt(minCapacity, maxCapacity + 1);
80	>	ArrayBlockingQueue<Item> q = new ArrayBlockingQueue<>(capacity);
81		assertTrue(q.isEmpty());
82	<	for(int i = 0; i < n; i++)
83	<	assertTrue(q.offer(new Integer(i)));
84	<	assertFalse(q.isEmpty());
85	<	assertEquals(0, q.remainingCapacity());
86	<	assertEquals(n, q.size());
82	>	// shuffle circular array elements so they wrap
83	>	{
84	>	int n = rnd.nextInt(capacity);
85	>	for (int i = 0; i < n; i++) q.add(fortytwo);
86	>	for (int i = 0; i < n; i++) q.remove();
87	>	}
88	>	for (int i = 0; i < size; i++)
89	>	mustOffer(q, i);
90	>	mustEqual(size == 0, q.isEmpty());
91	>	mustEqual(capacity - size, q.remainingCapacity());
92	>	mustEqual(size, q.size());
93	>	if (size > 0)
94	>	mustEqual(0, q.peek());
95		return q;
96		}
97	<
97	>
98		/**
99		* A new queue has the indicated capacity
100		*/
101		public void testConstructor1() {
102	<	assertEquals(SIZE, new ArrayBlockingQueue(SIZE).remainingCapacity());
102	>	mustEqual(SIZE, new ArrayBlockingQueue<Item>(SIZE).remainingCapacity());
103		}
104
105		/**
106	<	* Constructor throws IAE if  capacity argument nonpositive
106	>	* Constructor throws IllegalArgumentException if capacity argument nonpositive
107		*/
108	<	public void testConstructor2() {
109	<	try {
110	<	ArrayBlockingQueue q = new ArrayBlockingQueue(0);
111	<	shouldThrow();
108	>	public void testConstructor_nonPositiveCapacity() {
109	>	for (int i : new int[] { 0, -1, Integer.MIN_VALUE }) {
110	>	try {
111	>	new ArrayBlockingQueue<Item>(i);
112	>	shouldThrow();
113	>	} catch (IllegalArgumentException success) {}
114	>	for (boolean fair : new boolean[] { true, false }) {
115	>	try {
116	>	new ArrayBlockingQueue<Item>(i, fair);
117	>	shouldThrow();
118	>	} catch (IllegalArgumentException success) {}
119	>	}
120		}
52	–	catch (IllegalArgumentException success) {}
121		}
122
123		/**
124		* Initializing from null Collection throws NPE
125		*/
126	<	public void testConstructor3() {
126	>	public void testConstructor_nullCollection() {
127		try {
128	<	ArrayBlockingQueue q = new ArrayBlockingQueue(1, true, null);
128	>	new ArrayBlockingQueue<Item>(1, true, null);
129		shouldThrow();
130	<	}
63	<	catch (NullPointerException success) {}
130	>	} catch (NullPointerException success) {}
131		}
132
133		/**
134		* Initializing from Collection of null elements throws NPE
135		*/
136		public void testConstructor4() {
137	+	Collection<Item> elements = Arrays.asList(new Item[SIZE]);
138		try {
139	<	Integer[] ints = new Integer[SIZE];
72	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, false, Arrays.asList(ints));
139	>	new ArrayBlockingQueue<Item>(SIZE, false, elements);
140		shouldThrow();
141	<	}
75	<	catch (NullPointerException success) {}
141	>	} catch (NullPointerException success) {}
142		}
143
144		/**
145		* Initializing from Collection with some null elements throws NPE
146		*/
147		public void testConstructor5() {
148	+	Item[] items = new Item[2]; items[0] = zero;
149	+	Collection<Item> elements = Arrays.asList(items);
150		try {
151	<	Integer[] ints = new Integer[SIZE];
84	<	for (int i = 0; i < SIZE-1; ++i)
85	<	ints[i] = new Integer(i);
86	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, false, Arrays.asList(ints));
151	>	new ArrayBlockingQueue<Item>(SIZE, false, elements);
152		shouldThrow();
153	<	}
89	<	catch (NullPointerException success) {}
153	>	} catch (NullPointerException success) {}
154		}
155
156		/**
157	<	* Initializing from too large collection throws IAE
157	>	* Initializing from too large collection throws IllegalArgumentException
158		*/
159	<	public void testConstructor6() {
159	>	public void testConstructor_collectionTooLarge() {
160	>	// just barely fits - succeeds
161	>	new ArrayBlockingQueue<Object>(SIZE, false,
162	>	Collections.nCopies(SIZE, ""));
163		try {
164	<	Integer[] ints = new Integer[SIZE];
165	<	for (int i = 0; i < SIZE; ++i)
99	<	ints[i] = new Integer(i);
100	<	ArrayBlockingQueue q = new ArrayBlockingQueue(1, false, Arrays.asList(ints));
164	>	new ArrayBlockingQueue<Object>(SIZE - 1, false,
165	>	Collections.nCopies(SIZE, ""));
166		shouldThrow();
167	<	}
103	<	catch (IllegalArgumentException success) {}
167	>	} catch (IllegalArgumentException success) {}
168		}
169
170		/**
171		* Queue contains all elements of collection used to initialize
172		*/
173		public void testConstructor7() {
174	<	try {
175	<	Integer[] ints = new Integer[SIZE];
176	<	for (int i = 0; i < SIZE; ++i)
177	<	ints[i] = new Integer(i);
178	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, true, Arrays.asList(ints));
115	<	for (int i = 0; i < SIZE; ++i)
116	<	assertEquals(ints[i], q.poll());
117	<	}
118	<	finally {}
174	>	Item[] items = defaultItems;
175	>	Collection<Item> elements = Arrays.asList(items);
176	>	ArrayBlockingQueue<Item> q = new ArrayBlockingQueue<Item>(SIZE, true, elements);
177	>	for (int i = 0; i < SIZE; ++i)
178	>	mustEqual(items[i], q.poll());
179		}
180
181		/**
182		* Queue transitions from empty to full when elements added
183		*/
184		public void testEmptyFull() {
185	<	ArrayBlockingQueue q = new ArrayBlockingQueue(2);
185	>	BlockingQueue<Item> q = populatedQueue(0, 2, 2, false);
186		assertTrue(q.isEmpty());
187	<	assertEquals(2, q.remainingCapacity());
187	>	mustEqual(2, q.remainingCapacity());
188		q.add(one);
189		assertFalse(q.isEmpty());
190	<	q.add(two);
190	>	assertTrue(q.offer(two));
191		assertFalse(q.isEmpty());
192	<	assertEquals(0, q.remainingCapacity());
192	>	mustEqual(0, q.remainingCapacity());
193		assertFalse(q.offer(three));
194		}
195
#	Line 137 | Line 197 | public class ArrayBlockingQueueTest exte
197		* remainingCapacity decreases on add, increases on remove
198		*/
199		public void testRemainingCapacity() {
200	<	ArrayBlockingQueue q = populatedQueue(SIZE);
201	<	for (int i = 0; i < SIZE; ++i) {
202	<	assertEquals(i, q.remainingCapacity());
203	<	assertEquals(SIZE-i, q.size());
204	<	q.remove();
200	>	int size = ThreadLocalRandom.current().nextInt(1, SIZE);
201	>	BlockingQueue<Item> q = populatedQueue(size, size, 2 * size, false);
202	>	int spare = q.remainingCapacity();
203	>	int capacity = spare + size;
204	>	for (int i = 0; i < size; i++) {
205	>	mustEqual(spare + i, q.remainingCapacity());
206	>	mustEqual(capacity, q.size() + q.remainingCapacity());
207	>	mustEqual(i, q.remove());
208	>	}
209	>	for (int i = 0; i < size; i++) {
210	>	mustEqual(capacity - i, q.remainingCapacity());
211	>	mustEqual(capacity, q.size() + q.remainingCapacity());
212	>	mustAdd(q, i);
213		}
146	–	for (int i = 0; i < SIZE; ++i) {
147	–	assertEquals(SIZE-i, q.remainingCapacity());
148	–	assertEquals(i, q.size());
149	–	q.add(new Integer(i));
150	–	}
151	–	}
152	–
153	–	/**
154	–	*  offer(null) throws NPE
155	–	*/
156	–	public void testOfferNull() {
157	–	try {
158	–	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
159	–	q.offer(null);
160	–	shouldThrow();
161	–	} catch (NullPointerException success) { }
162	–	}
163	–
164	–	/**
165	–	*  add(null) throws NPE
166	–	*/
167	–	public void testAddNull() {
168	–	try {
169	–	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
170	–	q.add(null);
171	–	shouldThrow();
172	–	} catch (NullPointerException success) { }
214		}
215
216		/**
217		* Offer succeeds if not full; fails if full
218		*/
219		public void testOffer() {
220	<	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
220	>	ArrayBlockingQueue<Item> q = new ArrayBlockingQueue<Item>(1);
221		assertTrue(q.offer(zero));
222		assertFalse(q.offer(one));
223		}
224
225		/**
226	<	* add succeeds if not full; throws ISE if full
226	>	* add succeeds if not full; throws IllegalStateException if full
227		*/
228		public void testAdd() {
229	<	try {
230	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
231	<	for (int i = 0; i < SIZE; ++i) {
191	<	assertTrue(q.add(new Integer(i)));
192	<	}
193	<	assertEquals(0, q.remainingCapacity());
194	<	q.add(new Integer(SIZE));
195	<	} catch (IllegalStateException success){
196	<	}
197	<	}
198	<
199	<	/**
200	<	*  addAll(null) throws NPE
201	<	*/
202	<	public void testAddAll1() {
229	>	ArrayBlockingQueue<Item> q = new ArrayBlockingQueue<Item>(SIZE);
230	>	for (int i = 0; i < SIZE; i++) assertTrue(q.add(itemFor(i)));
231	>	mustEqual(0, q.remainingCapacity());
232		try {
233	<	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
205	<	q.addAll(null);
233	>	q.add(itemFor(SIZE));
234		shouldThrow();
235	<	}
208	<	catch (NullPointerException success) {}
235	>	} catch (IllegalStateException success) {}
236		}
237
238		/**
239	<	* addAll(this) throws IAE
239	>	* addAll(this) throws IllegalArgumentException
240		*/
241		public void testAddAllSelf() {
242	+	ArrayBlockingQueue<Item> q = populatedQueue(SIZE);
243		try {
216	–	ArrayBlockingQueue q = populatedQueue(SIZE);
244		q.addAll(q);
245		shouldThrow();
246	<	}
220	<	catch (IllegalArgumentException success) {}
246	>	} catch (IllegalArgumentException success) {}
247		}
248
223	–
224	–	/**
225	–	*  addAll of a collection with null elements throws NPE
226	–	*/
227	–	public void testAddAll2() {
228	–	try {
229	–	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
230	–	Integer[] ints = new Integer[SIZE];
231	–	q.addAll(Arrays.asList(ints));
232	–	shouldThrow();
233	–	}
234	–	catch (NullPointerException success) {}
235	–	}
249		/**
250		* addAll of a collection with any null elements throws NPE after
251		* possibly adding some elements
252		*/
253		public void testAddAll3() {
254	+	ArrayBlockingQueue<Item> q = new ArrayBlockingQueue<Item>(SIZE);
255	+	Item[] items = new Item[2]; items[0] = zero;
256		try {
257	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
243	<	Integer[] ints = new Integer[SIZE];
244	<	for (int i = 0; i < SIZE-1; ++i)
245	<	ints[i] = new Integer(i);
246	<	q.addAll(Arrays.asList(ints));
257	>	q.addAll(Arrays.asList(items));
258		shouldThrow();
259	<	}
249	<	catch (NullPointerException success) {}
259	>	} catch (NullPointerException success) {}
260		}
261	+
262		/**
263	<	* addAll throws ISE if not enough room
263	>	* addAll throws IllegalStateException if not enough room
264		*/
265	<	public void testAddAll4() {
265	>	public void testAddAll_insufficientSpace() {
266	>	int size = ThreadLocalRandom.current().nextInt(1, SIZE);
267	>	ArrayBlockingQueue<Item> q = populatedQueue(0, size, size, false);
268	>	// Just fits:
269	>	q.addAll(populatedQueue(size, size, 2 * size, false));
270	>	mustEqual(0, q.remainingCapacity());
271	>	mustEqual(size, q.size());
272	>	mustEqual(0, q.peek());
273		try {
274	<	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
275	<	Integer[] ints = new Integer[SIZE];
258	<	for (int i = 0; i < SIZE; ++i)
259	<	ints[i] = new Integer(i);
260	<	q.addAll(Arrays.asList(ints));
274	>	q = populatedQueue(0, size, size, false);
275	>	q.addAll(Collections.nCopies(size + 1, fortytwo));
276		shouldThrow();
277	<	}
263	<	catch (IllegalStateException success) {}
277	>	} catch (IllegalStateException success) {}
278		}
279	+
280		/**
281		* Queue contains all elements, in traversal order, of successful addAll
282		*/
283		public void testAddAll5() {
284	<	try {
285	<	Integer[] empty = new Integer[0];
286	<	Integer[] ints = new Integer[SIZE];
287	<	for (int i = 0; i < SIZE; ++i)
288	<	ints[i] = new Integer(i);
289	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
290	<	assertFalse(q.addAll(Arrays.asList(empty)));
276	<	assertTrue(q.addAll(Arrays.asList(ints)));
277	<	for (int i = 0; i < SIZE; ++i)
278	<	assertEquals(ints[i], q.poll());
279	<	}
280	<	finally {}
284	>	Item[] empty = new Item[0];
285	>	Item[] items = defaultItems;
286	>	ArrayBlockingQueue<Item> q = new ArrayBlockingQueue<Item>(SIZE);
287	>	assertFalse(q.addAll(Arrays.asList(empty)));
288	>	assertTrue(q.addAll(Arrays.asList(items)));
289	>	for (int i = 0; i < SIZE; ++i)
290	>	mustEqual(items[i], q.poll());
291		}
292
293		/**
284	–	*  put(null) throws NPE
285	–	*/
286	–	public void testPutNull() {
287	–	try {
288	–	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
289	–	q.put(null);
290	–	shouldThrow();
291	–	}
292	–	catch (NullPointerException success){
293	–	}
294	–	catch (InterruptedException ie) {
295	–	unexpectedException();
296	–	}
297	–	}
298	–
299	–	/**
294		* all elements successfully put are contained
295		*/
296	<	public void testPut() {
297	<	try {
298	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
299	<	for (int i = 0; i < SIZE; ++i) {
300	<	Integer I = new Integer(i);
301	<	q.put(I);
308	<	assertTrue(q.contains(I));
309	<	}
310	<	assertEquals(0, q.remainingCapacity());
311	<	}
312	<	catch (InterruptedException ie) {
313	<	unexpectedException();
296	>	public void testPut() throws InterruptedException {
297	>	ArrayBlockingQueue<Item> q = new ArrayBlockingQueue<Item>(SIZE);
298	>	for (int i = 0; i < SIZE; ++i) {
299	>	Item x = itemFor(i);
300	>	q.put(x);
301	>	mustContain(q, x);
302		}
303	+	mustEqual(0, q.remainingCapacity());
304		}
305
306		/**
307		* put blocks interruptibly if full
308		*/
309	<	public void testBlockingPut() {
310	<	Thread t = new Thread(new Runnable() {
311	<	public void run() {
312	<	int added = 0;
313	<	try {
314	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
315	<	for (int i = 0; i < SIZE; ++i) {
316	<	q.put(new Integer(i));
317	<	++added;
318	<	}
319	<	q.put(new Integer(SIZE));
320	<	threadShouldThrow();
321	<	} catch (InterruptedException ie){
322	<	threadAssertEquals(added, SIZE);
323	<	}
324	<	}});
325	<	try {
326	<	t.start();
327	<	Thread.sleep(SHORT_DELAY_MS);
328	<	t.interrupt();
329	<	t.join();
330	<	}
331	<	catch (InterruptedException ie) {
332	<	unexpectedException();
333	<	}
309	>	public void testBlockingPut() throws InterruptedException {
310	>	final ArrayBlockingQueue<Item> q = new ArrayBlockingQueue<Item>(SIZE);
311	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
312	>	Thread t = newStartedThread(new CheckedRunnable() {
313	>	public void realRun() throws InterruptedException {
314	>	for (int i = 0; i < SIZE; ++i)
315	>	q.put(itemFor(i));
316	>	mustEqual(SIZE, q.size());
317	>	mustEqual(0, q.remainingCapacity());
318	>
319	>	Thread.currentThread().interrupt();
320	>	try {
321	>	q.put(ninetynine);
322	>	shouldThrow();
323	>	} catch (InterruptedException success) {}
324	>	assertFalse(Thread.interrupted());
325	>
326	>	pleaseInterrupt.countDown();
327	>	try {
328	>	q.put(ninetynine);
329	>	shouldThrow();
330	>	} catch (InterruptedException success) {}
331	>	assertFalse(Thread.interrupted());
332	>	}});
333	>
334	>	await(pleaseInterrupt);
335	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
336	>	t.interrupt();
337	>	awaitTermination(t);
338	>	mustEqual(SIZE, q.size());
339	>	mustEqual(0, q.remainingCapacity());
340		}
341
342		/**
343	<	* put blocks waiting for take when full
344	<	*/
345	<	public void testPutWithTake() {
346	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
347	<	Thread t = new Thread(new Runnable() {
348	<	public void run() {
349	<	int added = 0;
350	<	try {
351	<	q.put(new Object());
352	<	++added;
353	<	q.put(new Object());
354	<	++added;
355	<	q.put(new Object());
356	<	++added;
357	<	q.put(new Object());
358	<	++added;
359	<	threadShouldThrow();
360	<	} catch (InterruptedException e){
361	<	threadAssertTrue(added >= 2);
362	<	}
363	<	}
364	<	});
365	<	try {
366	<	t.start();
367	<	Thread.sleep(SHORT_DELAY_MS);
368	<	q.take();
369	<	t.interrupt();
370	<	t.join();
371	<	} catch (Exception e){
372	<	unexpectedException();
373	<	}
343	>	* put blocks interruptibly waiting for take when full
344	>	*/
345	>	public void testPutWithTake() throws InterruptedException {
346	>	final int capacity = 2;
347	>	final ArrayBlockingQueue<Item> q = new ArrayBlockingQueue<Item>(capacity);
348	>	final CountDownLatch pleaseTake = new CountDownLatch(1);
349	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
350	>	Thread t = newStartedThread(new CheckedRunnable() {
351	>	public void realRun() throws InterruptedException {
352	>	for (int i = 0; i < capacity; i++)
353	>	q.put(itemFor(i));
354	>	pleaseTake.countDown();
355	>	q.put(eightysix);
356	>
357	>	Thread.currentThread().interrupt();
358	>	try {
359	>	q.put(ninetynine);
360	>	shouldThrow();
361	>	} catch (InterruptedException success) {}
362	>	assertFalse(Thread.interrupted());
363	>
364	>	pleaseInterrupt.countDown();
365	>	try {
366	>	q.put(ninetynine);
367	>	shouldThrow();
368	>	} catch (InterruptedException success) {}
369	>	assertFalse(Thread.interrupted());
370	>	}});
371	>
372	>	await(pleaseTake);
373	>	mustEqual(0, q.remainingCapacity());
374	>	mustEqual(0, q.take());
375	>
376	>	await(pleaseInterrupt);
377	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
378	>	t.interrupt();
379	>	awaitTermination(t);
380	>	mustEqual(0, q.remainingCapacity());
381		}
382
383		/**
384		* timed offer times out if full and elements not taken
385		*/
386		public void testTimedOffer() {
387	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
388	<	Thread t = new Thread(new Runnable() {
389	<	public void run() {
390	<	try {
391	<	q.put(new Object());
392	<	q.put(new Object());
393	<	threadAssertFalse(q.offer(new Object(), SHORT_DELAY_MS/2, TimeUnit.MILLISECONDS));
394	<	q.offer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS);
395	<	threadShouldThrow();
396	<	} catch (InterruptedException success){}
397	<	}
398	<	});
399	<
400	<	try {
401	<	t.start();
402	<	Thread.sleep(SHORT_DELAY_MS);
403	<	t.interrupt();
404	<	t.join();
405	<	} catch (Exception e){
406	<	unexpectedException();
407	<	}
387	>	final ArrayBlockingQueue<Item> q = new ArrayBlockingQueue<Item>(2);
388	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
389	>	Thread t = newStartedThread(new CheckedRunnable() {
390	>	public void realRun() throws InterruptedException {
391	>	q.put(one);
392	>	q.put(two);
393	>	long startTime = System.nanoTime();
394	>	assertFalse(q.offer(zero, timeoutMillis(), MILLISECONDS));
395	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
396	>
397	>	Thread.currentThread().interrupt();
398	>	try {
399	>	q.offer(three, randomTimeout(), randomTimeUnit());
400	>	shouldThrow();
401	>	} catch (InterruptedException success) {}
402	>	assertFalse(Thread.interrupted());
403	>
404	>	pleaseInterrupt.countDown();
405	>	try {
406	>	q.offer(four, LONGER_DELAY_MS, MILLISECONDS);
407	>	shouldThrow();
408	>	} catch (InterruptedException success) {}
409	>	assertFalse(Thread.interrupted());
410	>	}});
411	>
412	>	await(pleaseInterrupt);
413	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
414	>	t.interrupt();
415	>	awaitTermination(t);
416		}
417
418		/**
419		* take retrieves elements in FIFO order
420		*/
421	<	public void testTake() {
422	<	try {
423	<	ArrayBlockingQueue q = populatedQueue(SIZE);
424	<	for (int i = 0; i < SIZE; ++i) {
415	<	assertEquals(i, ((Integer)q.take()).intValue());
416	<	}
417	<	} catch (InterruptedException e){
418	<	unexpectedException();
419	<	}
420	<	}
421	<
422	<	/**
423	<	* take blocks interruptibly when empty
424	<	*/
425	<	public void testTakeFromEmpty() {
426	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
427	<	Thread t = new Thread(new Runnable() {
428	<	public void run() {
429	<	try {
430	<	q.take();
431	<	threadShouldThrow();
432	<	} catch (InterruptedException success){ }
433	<	}
434	<	});
435	<	try {
436	<	t.start();
437	<	Thread.sleep(SHORT_DELAY_MS);
438	<	t.interrupt();
439	<	t.join();
440	<	} catch (Exception e){
441	<	unexpectedException();
421	>	public void testTake() throws InterruptedException {
422	>	ArrayBlockingQueue<Item> q = populatedQueue(SIZE);
423	>	for (int i = 0; i < SIZE; ++i) {
424	>	mustEqual(i, q.take());
425		}
426		}
427
428		/**
429		* Take removes existing elements until empty, then blocks interruptibly
430		*/
431	<	public void testBlockingTake() {
432	<	Thread t = new Thread(new Runnable() {
433	<	public void run() {
434	<	try {
435	<	ArrayBlockingQueue q = populatedQueue(SIZE);
436	<	for (int i = 0; i < SIZE; ++i) {
437	<	threadAssertEquals(i, ((Integer)q.take()).intValue());
438	<	}
439	<	q.take();
440	<	threadShouldThrow();
441	<	} catch (InterruptedException success){
442	<	}
443	<	}});
461	<	try {
462	<	t.start();
463	<	Thread.sleep(SHORT_DELAY_MS);
464	<	t.interrupt();
465	<	t.join();
466	<	}
467	<	catch (InterruptedException ie) {
468	<	unexpectedException();
469	<	}
470	<	}
431	>	public void testBlockingTake() throws InterruptedException {
432	>	final ArrayBlockingQueue<Item> q = populatedQueue(SIZE);
433	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
434	>	Thread t = newStartedThread(new CheckedRunnable() {
435	>	public void realRun() throws InterruptedException {
436	>	for (int i = 0; i < SIZE; i++) mustEqual(i, q.take());
437	>
438	>	Thread.currentThread().interrupt();
439	>	try {
440	>	q.take();
441	>	shouldThrow();
442	>	} catch (InterruptedException success) {}
443	>	assertFalse(Thread.interrupted());
444
445	+	pleaseInterrupt.countDown();
446	+	try {
447	+	q.take();
448	+	shouldThrow();
449	+	} catch (InterruptedException success) {}
450	+	assertFalse(Thread.interrupted());
451	+	}});
452	+
453	+	await(pleaseInterrupt);
454	+	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
455	+	t.interrupt();
456	+	awaitTermination(t);
457	+	}
458
459		/**
460		* poll succeeds unless empty
461		*/
462		public void testPoll() {
463	<	ArrayBlockingQueue q = populatedQueue(SIZE);
463	>	ArrayBlockingQueue<Item> q = populatedQueue(SIZE);
464		for (int i = 0; i < SIZE; ++i) {
465	<	assertEquals(i, ((Integer)q.poll()).intValue());
465	>	mustEqual(i, q.poll());
466		}
467	<	assertNull(q.poll());
467	>	assertNull(q.poll());
468		}
469
470		/**
471	<	* timed pool with zero timeout succeeds when non-empty, else times out
471	>	* timed poll with zero timeout succeeds when non-empty, else times out
472		*/
473	<	public void testTimedPoll0() {
474	<	try {
475	<	ArrayBlockingQueue q = populatedQueue(SIZE);
476	<	for (int i = 0; i < SIZE; ++i) {
477	<	assertEquals(i, ((Integer)q.poll(0, TimeUnit.MILLISECONDS)).intValue());
478	<	}
479	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
494	<	} catch (InterruptedException e){
495	<	unexpectedException();
496	<	}
473	>	public void testTimedPoll0() throws InterruptedException {
474	>	ArrayBlockingQueue<Item> q = populatedQueue(SIZE);
475	>	for (int i = 0; i < SIZE; ++i) {
476	>	mustEqual(i, q.poll(0, MILLISECONDS));
477	>	}
478	>	assertNull(q.poll(0, MILLISECONDS));
479	>	checkEmpty(q);
480		}
481
482		/**
483	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
483	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
484		*/
485	<	public void testTimedPoll() {
486	<	try {
487	<	ArrayBlockingQueue q = populatedQueue(SIZE);
488	<	for (int i = 0; i < SIZE; ++i) {
489	<	assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
490	<	}
491	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
492	<	} catch (InterruptedException e){
493	<	unexpectedException();
494	<	}
485	>	public void testTimedPoll() throws InterruptedException {
486	>	ArrayBlockingQueue<Item> q = populatedQueue(SIZE);
487	>	for (int i = 0; i < SIZE; ++i) {
488	>	long startTime = System.nanoTime();
489	>	mustEqual(i, q.poll(LONG_DELAY_MS, MILLISECONDS));
490	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
491	>	}
492	>	long startTime = System.nanoTime();
493	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
494	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
495	>	checkEmpty(q);
496		}
497
498		/**
499		* Interrupted timed poll throws InterruptedException instead of
500		* returning timeout status
501		*/
502	<	public void testInterruptedTimedPoll() {
503	<	Thread t = new Thread(new Runnable() {
504	<	public void run() {
505	<	try {
506	<	ArrayBlockingQueue q = populatedQueue(SIZE);
507	<	for (int i = 0; i < SIZE; ++i) {
508	<	threadAssertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
525	<	}
526	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
527	<	} catch (InterruptedException success){
528	<	}
529	<	}});
530	<	try {
531	<	t.start();
532	<	Thread.sleep(SHORT_DELAY_MS);
533	<	t.interrupt();
534	<	t.join();
535	<	}
536	<	catch (InterruptedException ie) {
537	<	unexpectedException();
538	<	}
539	<	}
502	>	public void testInterruptedTimedPoll() throws InterruptedException {
503	>	final BlockingQueue<Item> q = populatedQueue(SIZE);
504	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
505	>	Thread t = newStartedThread(new CheckedRunnable() {
506	>	public void realRun() throws InterruptedException {
507	>	for (int i = 0; i < SIZE; i++)
508	>	mustEqual(i, q.poll(LONG_DELAY_MS, MILLISECONDS));
509
510	<	/**
511	<	*  timed poll before a delayed offer fails; after offer succeeds;
512	<	*  on interruption throws
513	<	*/
514	<	public void testTimedPollWithOffer() {
515	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
547	<	Thread t = new Thread(new Runnable() {
548	<	public void run() {
549	<	try {
550	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
551	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
552	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
553	<	threadShouldThrow();
554	<	} catch (InterruptedException success) { }
555	<	}
556	<	});
557	<	try {
558	<	t.start();
559	<	Thread.sleep(SMALL_DELAY_MS);
560	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
561	<	t.interrupt();
562	<	t.join();
563	<	} catch (Exception e){
564	<	unexpectedException();
565	<	}
566	<	}
510	>	Thread.currentThread().interrupt();
511	>	try {
512	>	q.poll(randomTimeout(), randomTimeUnit());
513	>	shouldThrow();
514	>	} catch (InterruptedException success) {}
515	>	assertFalse(Thread.interrupted());
516
517	+	pleaseInterrupt.countDown();
518	+	try {
519	+	q.poll(LONGER_DELAY_MS, MILLISECONDS);
520	+	shouldThrow();
521	+	} catch (InterruptedException success) {}
522	+	assertFalse(Thread.interrupted());
523	+	}});
524	+
525	+	await(pleaseInterrupt);
526	+	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
527	+	t.interrupt();
528	+	awaitTermination(t);
529	+	checkEmpty(q);
530	+	}
531
532		/**
533		* peek returns next element, or null if empty
534		*/
535		public void testPeek() {
536	<	ArrayBlockingQueue q = populatedQueue(SIZE);
536	>	ArrayBlockingQueue<Item> q = populatedQueue(SIZE);
537		for (int i = 0; i < SIZE; ++i) {
538	<	assertEquals(i, ((Integer)q.peek()).intValue());
539	<	q.poll();
538	>	mustEqual(i, q.peek());
539	>	mustEqual(i, q.poll());
540		assertTrue(q.peek() == null ||
541	<	i != ((Integer)q.peek()).intValue());
541	>	!q.peek().equals(i));
542		}
543	<	assertNull(q.peek());
543	>	assertNull(q.peek());
544		}
545
546		/**
547		* element returns next element, or throws NSEE if empty
548		*/
549		public void testElement() {
550	<	ArrayBlockingQueue q = populatedQueue(SIZE);
550	>	ArrayBlockingQueue<Item> q = populatedQueue(SIZE);
551		for (int i = 0; i < SIZE; ++i) {
552	<	assertEquals(i, ((Integer)q.element()).intValue());
553	<	q.poll();
552	>	mustEqual(i, q.element());
553	>	mustEqual(i, q.poll());
554		}
555		try {
556		q.element();
557		shouldThrow();
558	<	}
596	<	catch (NoSuchElementException success) {}
558	>	} catch (NoSuchElementException success) {}
559		}
560
561		/**
562		* remove removes next element, or throws NSEE if empty
563		*/
564		public void testRemove() {
565	<	ArrayBlockingQueue q = populatedQueue(SIZE);
565	>	ArrayBlockingQueue<Item> q = populatedQueue(SIZE);
566		for (int i = 0; i < SIZE; ++i) {
567	<	assertEquals(i, ((Integer)q.remove()).intValue());
567	>	mustEqual(i, q.remove());
568		}
569		try {
570		q.remove();
571		shouldThrow();
572	<	} catch (NoSuchElementException success){
611	<	}
572	>	} catch (NoSuchElementException success) {}
573		}
574
575		/**
615	–	* remove(x) removes x and returns true if present
616	–	*/
617	–	public void testRemoveElement() {
618	–	ArrayBlockingQueue q = populatedQueue(SIZE);
619	–	for (int i = 1; i < SIZE; i+=2) {
620	–	assertTrue(q.remove(new Integer(i)));
621	–	}
622	–	for (int i = 0; i < SIZE; i+=2) {
623	–	assertTrue(q.remove(new Integer(i)));
624	–	assertFalse(q.remove(new Integer(i+1)));
625	–	}
626	–	assertTrue(q.isEmpty());
627	–	}
628	–
629	–	/**
576		* contains(x) reports true when elements added but not yet removed
577		*/
578		public void testContains() {
579	<	ArrayBlockingQueue q = populatedQueue(SIZE);
580	<	for (int i = 0; i < SIZE; ++i) {
581	<	assertTrue(q.contains(new Integer(i)));
582	<	q.poll();
583	<	assertFalse(q.contains(new Integer(i)));
579	>	int size = ThreadLocalRandom.current().nextInt(1, SIZE);
580	>	ArrayBlockingQueue<Item> q = populatedQueue(size, size, 2 * size, false);
581	>	assertFalse(q.contains(null));
582	>	for (int i = 0; i < size; ++i) {
583	>	mustContain(q, i);
584	>	mustEqual(i, q.poll());
585	>	mustNotContain(q, i);
586		}
587		}
588
#	Line 642 | Line 590 | public class ArrayBlockingQueueTest exte
590		* clear removes all elements
591		*/
592		public void testClear() {
593	<	ArrayBlockingQueue q = populatedQueue(SIZE);
593	>	int size = ThreadLocalRandom.current().nextInt(1, 5);
594	>	ArrayBlockingQueue<Item> q = populatedQueue(size, size, 2 * size, false);
595	>	int capacity = size + q.remainingCapacity();
596		q.clear();
597		assertTrue(q.isEmpty());
598	<	assertEquals(0, q.size());
599	<	assertEquals(SIZE, q.remainingCapacity());
598	>	mustEqual(0, q.size());
599	>	mustEqual(capacity, q.remainingCapacity());
600		q.add(one);
601		assertFalse(q.isEmpty());
602	+	mustContain(q, one);
603		q.clear();
604		assertTrue(q.isEmpty());
605		}
#	Line 657 | Line 608 | public class ArrayBlockingQueueTest exte
608		* containsAll(c) is true when c contains a subset of elements
609		*/
610		public void testContainsAll() {
611	<	ArrayBlockingQueue q = populatedQueue(SIZE);
612	<	ArrayBlockingQueue p = new ArrayBlockingQueue(SIZE);
611	>	ArrayBlockingQueue<Item> q = populatedQueue(SIZE);
612	>	ArrayBlockingQueue<Item> p = new ArrayBlockingQueue<Item>(SIZE);
613		for (int i = 0; i < SIZE; ++i) {
614		assertTrue(q.containsAll(p));
615		assertFalse(p.containsAll(q));
616	<	p.add(new Integer(i));
616	>	mustAdd(p, i);
617		}
618		assertTrue(p.containsAll(q));
619		}
#	Line 671 | Line 622 | public class ArrayBlockingQueueTest exte
622		* retainAll(c) retains only those elements of c and reports true if changed
623		*/
624		public void testRetainAll() {
625	<	ArrayBlockingQueue q = populatedQueue(SIZE);
626	<	ArrayBlockingQueue p = populatedQueue(SIZE);
625	>	ArrayBlockingQueue<Item> q = populatedQueue(SIZE);
626	>	ArrayBlockingQueue<Item> p = populatedQueue(SIZE);
627		for (int i = 0; i < SIZE; ++i) {
628		boolean changed = q.retainAll(p);
629		if (i == 0)
#	Line 681 | Line 632 | public class ArrayBlockingQueueTest exte
632		assertTrue(changed);
633
634		assertTrue(q.containsAll(p));
635	<	assertEquals(SIZE-i, q.size());
635	>	mustEqual(SIZE - i, q.size());
636		p.remove();
637		}
638		}
#	Line 691 | Line 642 | public class ArrayBlockingQueueTest exte
642		*/
643		public void testRemoveAll() {
644		for (int i = 1; i < SIZE; ++i) {
645	<	ArrayBlockingQueue q = populatedQueue(SIZE);
646	<	ArrayBlockingQueue p = populatedQueue(i);
645	>	ArrayBlockingQueue<Item> q = populatedQueue(SIZE);
646	>	ArrayBlockingQueue<Item> p = populatedQueue(i);
647		assertTrue(q.removeAll(p));
648	<	assertEquals(SIZE-i, q.size());
648	>	mustEqual(SIZE - i, q.size());
649		for (int j = 0; j < i; ++j) {
650	<	Integer I = (Integer)(p.remove());
651	<	assertFalse(q.contains(I));
650	>	Item x = p.remove();
651	>	mustNotContain(q, x);
652		}
653		}
654		}
655
656	<	/**
657	<	*  toArray contains all elements
658	<	*/
659	<	public void testToArray() {
660	<	ArrayBlockingQueue q = populatedQueue(SIZE);
661	<	Object[] o = q.toArray();
662	<	try {
663	<	for(int i = 0; i < o.length; i++)
664	<	assertEquals(o[i], q.take());
665	<	} catch (InterruptedException e){
666	<	unexpectedException();
667	<	}
656	>	void checkToArray(ArrayBlockingQueue<Item> q) {
657	>	int size = q.size();
658	>	Object[] a1 = q.toArray();
659	>	mustEqual(size, a1.length);
660	>	Item[] a2 = q.toArray(new Item[0]);
661	>	mustEqual(size, a2.length);
662	>	Item[] a3 = q.toArray(new Item[Math.max(0, size - 1)]);
663	>	mustEqual(size, a3.length);
664	>	Item[] a4 = new Item[size];
665	>	assertSame(a4, q.toArray(a4));
666	>	Item[] a5 = new Item[size + 1];
667	>	Arrays.fill(a5, fortytwo);
668	>	assertSame(a5, q.toArray(a5));
669	>	Item[] a6 = new Item[size + 2];
670	>	Arrays.fill(a6, fortytwo);
671	>	assertSame(a6, q.toArray(a6));
672	>	Object[][] as = { a1, a2, a3, a4, a5, a6 };
673	>	for (Object[] a : as) {
674	>	if (a.length > size) assertNull(a[size]);
675	>	if (a.length > size + 1) mustEqual(fortytwo, a[size + 1]);
676	>	}
677	>	Iterator<? extends Item> it = q.iterator();
678	>	Item s = q.peek();
679	>	for (int i = 0; i < size; i++) {
680	>	Item x = (Item) it.next();
681	>	mustEqual(s.value + i, x);
682	>	for (Object[] a : as)
683	>	mustEqual(a[i], x);
684	>	}
685		}
686
687		/**
688	<	* toArray(a) contains all elements
688	>	* toArray() and toArray(a) contain all elements in FIFO order
689		*/
690	<	public void testToArray2() {
691	<	ArrayBlockingQueue q = populatedQueue(SIZE);
692	<	Integer[] ints = new Integer[SIZE];
693	<	ints = (Integer[])q.toArray(ints);
694	<	try {
695	<	for(int i = 0; i < ints.length; i++)
696	<	assertEquals(ints[i], q.take());
697	<	} catch (InterruptedException e){
698	<	unexpectedException();
699	<	}
690	>	public void testToArray() {
691	>	final ThreadLocalRandom rnd = ThreadLocalRandom.current();
692	>	final int size = rnd.nextInt(6);
693	>	final int capacity = Math.max(1, size + rnd.nextInt(size + 1));
694	>	ArrayBlockingQueue<Item> q = new ArrayBlockingQueue<>(capacity);
695	>	for (int i = 0; i < size; i++) {
696	>	checkToArray(q);
697	>	mustAdd(q, i);
698	>	}
699	>	// Provoke wraparound
700	>	int added = size * 2;
701	>	for (int i = 0; i < added; i++) {
702	>	checkToArray(q);
703	>	mustEqual(i, q.poll());
704	>	q.add(new Item(size + i));
705	>	}
706	>	for (int i = 0; i < size; i++) {
707	>	checkToArray(q);
708	>	mustEqual((added + i), q.poll());
709	>	}
710		}
711
712		/**
713	<	* toArray(null) throws NPE
713	>	* toArray(incompatible array type) throws ArrayStoreException
714		*/
715	<	public void testToArray_BadArg() {
716	<	try {
717	<	ArrayBlockingQueue q = populatedQueue(SIZE);
718	<	Object o[] = q.toArray(null);
719	<	shouldThrow();
720	<	} catch(NullPointerException success){}
715	>	public void testToArray_incompatibleArrayType() {
716	>	ArrayBlockingQueue<Item> q = populatedQueue(SIZE);
717	>	try {
718	>	q.toArray(new String[10]);
719	>	shouldThrow();
720	>	} catch (ArrayStoreException success) {}
721	>	try {
722	>	q.toArray(new String[0]);
723	>	shouldThrow();
724	>	} catch (ArrayStoreException success) {}
725		}
726
727		/**
728	<	* toArray with incompatable array type throws CCE
728	>	* iterator iterates through all elements
729		*/
730	<	public void testToArray1_BadArg() {
731	<	try {
732	<	ArrayBlockingQueue q = populatedQueue(SIZE);
733	<	Object o[] = q.toArray(new String[10] );
734	<	shouldThrow();
735	<	} catch(ArrayStoreException  success){}
730	>	public void testIterator() throws InterruptedException {
731	>	ArrayBlockingQueue<Item> q = populatedQueue(SIZE);
732	>	Iterator<? extends Item> it = q.iterator();
733	>	int i;
734	>	for (i = 0; it.hasNext(); i++)
735	>	mustContain(q, it.next());
736	>	mustEqual(i, SIZE);
737	>	assertIteratorExhausted(it);
738	>
739	>	it = q.iterator();
740	>	for (i = 0; it.hasNext(); i++)
741	>	mustEqual(it.next(), q.take());
742	>	mustEqual(i, SIZE);
743	>	assertIteratorExhausted(it);
744		}
745
756	–
746		/**
747	<	* iterator iterates through all elements
747	>	* iterator of empty collection has no elements
748		*/
749	<	public void testIterator() {
750	<	ArrayBlockingQueue q = populatedQueue(SIZE);
762	<	Iterator it = q.iterator();
763	<	try {
764	<	while(it.hasNext()){
765	<	assertEquals(it.next(), q.take());
766	<	}
767	<	} catch (InterruptedException e){
768	<	unexpectedException();
769	<	}
749	>	public void testEmptyIterator() {
750	>	assertIteratorExhausted(new ArrayBlockingQueue<Item>(SIZE).iterator());
751		}
752
753		/**
754		* iterator.remove removes current element
755		*/
756	<	public void testIteratorRemove () {
757	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(3);
756	>	public void testIteratorRemove() {
757	>	final ArrayBlockingQueue<Item> q = new ArrayBlockingQueue<Item>(3);
758		q.add(two);
759		q.add(one);
760		q.add(three);
761
762	<	Iterator it = q.iterator();
762	>	Iterator<? extends Item> it = q.iterator();
763		it.next();
764		it.remove();
765	<
765	>
766		it = q.iterator();
767	<	assertEquals(it.next(), one);
768	<	assertEquals(it.next(), three);
767	>	assertSame(it.next(), one);
768	>	assertSame(it.next(), three);
769		assertFalse(it.hasNext());
770		}
771
#	Line 792 | Line 773 | public class ArrayBlockingQueueTest exte
773		* iterator ordering is FIFO
774		*/
775		public void testIteratorOrdering() {
776	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(3);
776	>	final ArrayBlockingQueue<Item> q = new ArrayBlockingQueue<Item>(3);
777		q.add(one);
778		q.add(two);
779		q.add(three);
#	Line 800 | Line 781 | public class ArrayBlockingQueueTest exte
781		assertEquals("queue should be full", 0, q.remainingCapacity());
782
783		int k = 0;
784	<	for (Iterator it = q.iterator(); it.hasNext();) {
785	<	int i = ((Integer)(it.next())).intValue();
805	<	assertEquals(++k, i);
784	>	for (Iterator<? extends Item> it = q.iterator(); it.hasNext();) {
785	>	mustEqual(++k, it.next());
786		}
787	<	assertEquals(3, k);
787	>	mustEqual(3, k);
788		}
789
790		/**
791		* Modifications do not cause iterators to fail
792		*/
793	<	public void testWeaklyConsistentIteration () {
794	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(3);
793	>	public void testWeaklyConsistentIteration() {
794	>	final ArrayBlockingQueue<Item> q = new ArrayBlockingQueue<Item>(3);
795		q.add(one);
796		q.add(two);
797		q.add(three);
798	<	try {
799	<	for (Iterator it = q.iterator(); it.hasNext();) {
800	<	q.remove();
821	<	it.next();
822	<	}
823	<	}
824	<	catch (ConcurrentModificationException e) {
825	<	unexpectedException();
798	>	for (Iterator<? extends Item> it = q.iterator(); it.hasNext();) {
799	>	q.remove();
800	>	it.next();
801		}
802	<	assertEquals(0, q.size());
802	>	mustEqual(0, q.size());
803		}
804
830	–
805		/**
806		* toString contains toStrings of elements
807		*/
808		public void testToString() {
809	<	ArrayBlockingQueue q = populatedQueue(SIZE);
809	>	ArrayBlockingQueue<Item> q = populatedQueue(SIZE);
810		String s = q.toString();
811		for (int i = 0; i < SIZE; ++i) {
812	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
812	>	assertTrue(s.contains(String.valueOf(i)));
813		}
814	<	}
841	<
814	>	}
815
816		/**
817		* offer transfers elements across Executor tasks
818		*/
819		public void testOfferInExecutor() {
820	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
820	>	final ArrayBlockingQueue<Item> q = new ArrayBlockingQueue<Item>(2);
821		q.add(one);
822		q.add(two);
823	<	ExecutorService executor = Executors.newFixedThreadPool(2);
824	<	executor.execute(new Runnable() {
825	<	public void run() {
826	<	threadAssertFalse(q.offer(three));
827	<	try {
828	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
829	<	threadAssertEquals(0, q.remainingCapacity());
830	<	}
831	<	catch (InterruptedException e) {
832	<	threadUnexpectedException();
860	<	}
861	<	}
862	<	});
863	<
864	<	executor.execute(new Runnable() {
865	<	public void run() {
866	<	try {
867	<	Thread.sleep(SMALL_DELAY_MS);
868	<	threadAssertEquals(one, q.take());
869	<	}
870	<	catch (InterruptedException e) {
871	<	threadUnexpectedException();
872	<	}
873	<	}
874	<	});
875	<
876	<	joinPool(executor);
823	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
824	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
825	>	try (PoolCleaner cleaner = cleaner(executor)) {
826	>	executor.execute(new CheckedRunnable() {
827	>	public void realRun() throws InterruptedException {
828	>	assertFalse(q.offer(three));
829	>	threadsStarted.await();
830	>	assertTrue(q.offer(three, LONG_DELAY_MS, MILLISECONDS));
831	>	mustEqual(0, q.remainingCapacity());
832	>	}});
833
834	+	executor.execute(new CheckedRunnable() {
835	+	public void realRun() throws InterruptedException {
836	+	threadsStarted.await();
837	+	mustEqual(0, q.remainingCapacity());
838	+	assertSame(one, q.take());
839	+	}});
840	+	}
841		}
842
843		/**
844	<	* poll retrieves elements across Executor threads
844	>	* timed poll retrieves elements across Executor threads
845		*/
846		public void testPollInExecutor() {
847	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
848	<	ExecutorService executor = Executors.newFixedThreadPool(2);
849	<	executor.execute(new Runnable() {
850	<	public void run() {
851	<	threadAssertNull(q.poll());
852	<	try {
853	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
854	<	threadAssertTrue(q.isEmpty());
855	<	}
856	<	catch (InterruptedException e) {
857	<	threadUnexpectedException();
895	<	}
896	<	}
897	<	});
847	>	final ArrayBlockingQueue<Item> q = new ArrayBlockingQueue<Item>(2);
848	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
849	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
850	>	try (PoolCleaner cleaner = cleaner(executor)) {
851	>	executor.execute(new CheckedRunnable() {
852	>	public void realRun() throws InterruptedException {
853	>	assertNull(q.poll());
854	>	threadsStarted.await();
855	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
856	>	checkEmpty(q);
857	>	}});
858
859	<	executor.execute(new Runnable() {
860	<	public void run() {
861	<	try {
902	<	Thread.sleep(SMALL_DELAY_MS);
859	>	executor.execute(new CheckedRunnable() {
860	>	public void realRun() throws InterruptedException {
861	>	threadsStarted.await();
862		q.put(one);
863	<	}
905	<	catch (InterruptedException e) {
906	<	threadUnexpectedException();
907	<	}
908	<	}
909	<	});
910	<
911	<	joinPool(executor);
912	<	}
913	<
914	<	/**
915	<	* A deserialized serialized queue has same elements in same order
916	<	*/
917	<	public void testSerialization() {
918	<	ArrayBlockingQueue q = populatedQueue(SIZE);
919	<
920	<	try {
921	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
922	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
923	<	out.writeObject(q);
924	<	out.close();
925	<
926	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
927	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
928	<	ArrayBlockingQueue r = (ArrayBlockingQueue)in.readObject();
929	<	assertEquals(q.size(), r.size());
930	<	while (!q.isEmpty())
931	<	assertEquals(q.remove(), r.remove());
932	<	} catch(Exception e){
933	<	unexpectedException();
934	<	}
935	<	}
936	<
937	<	/**
938	<	* drainTo(null) throws NPE
939	<	*/
940	<	public void testDrainToNull() {
941	<	ArrayBlockingQueue q = populatedQueue(SIZE);
942	<	try {
943	<	q.drainTo(null);
944	<	shouldThrow();
945	<	} catch(NullPointerException success) {
863	>	}});
864		}
865		}
866
867		/**
868	<	* drainTo(this) throws IAE
869	<	*/
870	<	public void testDrainToSelf() {
871	<	ArrayBlockingQueue q = populatedQueue(SIZE);
872	<	try {
873	<	q.drainTo(q);
874	<	shouldThrow();
875	<	} catch(IllegalArgumentException success) {
868	>	* A deserialized/reserialized queue has same elements in same order
869	>	*/
870	>	public void testSerialization() throws Exception {
871	>	Queue<Item> x = populatedQueue(SIZE);
872	>	Queue<Item> y = serialClone(x);
873	>
874	>	assertNotSame(x, y);
875	>	mustEqual(x.size(), y.size());
876	>	mustEqual(x.toString(), y.toString());
877	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
878	>	while (!x.isEmpty()) {
879	>	assertFalse(y.isEmpty());
880	>	mustEqual(x.remove(), y.remove());
881		}
882	+	assertTrue(y.isEmpty());
883		}
884
885		/**
886		* drainTo(c) empties queue into another collection c
887	<	*/
887	>	*/
888		public void testDrainTo() {
889	<	ArrayBlockingQueue q = populatedQueue(SIZE);
890	<	ArrayList l = new ArrayList();
889	>	ArrayBlockingQueue<Item> q = populatedQueue(SIZE);
890	>	ArrayList<Item> l = new ArrayList<Item>();
891		q.drainTo(l);
892	<	assertEquals(q.size(), 0);
893	<	assertEquals(l.size(), SIZE);
894	<	for (int i = 0; i < SIZE; ++i)
895	<	assertEquals(l.get(i), new Integer(i));
892	>	mustEqual(0, q.size());
893	>	mustEqual(SIZE, l.size());
894	>	for (int i = 0; i < SIZE; ++i)
895	>	mustEqual(l.get(i), i);
896	>	q.add(zero);
897	>	q.add(one);
898	>	assertFalse(q.isEmpty());
899	>	mustContain(q, zero);
900	>	mustContain(q, one);
901	>	l.clear();
902	>	q.drainTo(l);
903	>	mustEqual(0, q.size());
904	>	mustEqual(2, l.size());
905	>	for (int i = 0; i < 2; ++i)
906	>	mustEqual(l.get(i), i);
907		}
908
909		/**
910		* drainTo empties full queue, unblocking a waiting put.
911	<	*/
912	<	public void testDrainToWithActivePut() {
913	<	final ArrayBlockingQueue q = populatedQueue(SIZE);
914	<	Thread t = new Thread(new Runnable() {
915	<	public void run() {
916	<	try {
917	<	q.put(new Integer(SIZE+1));
983	<	} catch (InterruptedException ie){
984	<	threadUnexpectedException();
985	<	}
986	<	}
987	<	});
988	<	try {
989	<	t.start();
990	<	ArrayList l = new ArrayList();
991	<	q.drainTo(l);
992	<	assertTrue(l.size() >= SIZE);
993	<	for (int i = 0; i < SIZE; ++i)
994	<	assertEquals(l.get(i), new Integer(i));
995	<	t.join();
996	<	assertTrue(q.size() + l.size() == SIZE+1);
997	<	} catch(Exception e){
998	<	unexpectedException();
999	<	}
1000	<	}
1001	<
1002	<	/**
1003	<	* drainTo(null, n) throws NPE
1004	<	*/
1005	<	public void testDrainToNullN() {
1006	<	ArrayBlockingQueue q = populatedQueue(SIZE);
1007	<	try {
1008	<	q.drainTo(null, 0);
1009	<	shouldThrow();
1010	<	} catch(NullPointerException success) {
1011	<	}
1012	<	}
911	>	*/
912	>	public void testDrainToWithActivePut() throws InterruptedException {
913	>	final ArrayBlockingQueue<Item> q = populatedQueue(SIZE);
914	>	Thread t = new Thread(new CheckedRunnable() {
915	>	public void realRun() throws InterruptedException {
916	>	q.put(new Item(SIZE + 1));
917	>	}});
918
919	<	/**
920	<	* drainTo(this, n) throws IAE
921	<	*/
922	<	public void testDrainToSelfN() {
923	<	ArrayBlockingQueue q = populatedQueue(SIZE);
924	<	try {
925	<	q.drainTo(q, 0);
926	<	shouldThrow();
1022	<	} catch(IllegalArgumentException success) {
1023	<	}
919	>	t.start();
920	>	ArrayList<Item> l = new ArrayList<Item>();
921	>	q.drainTo(l);
922	>	assertTrue(l.size() >= SIZE);
923	>	for (int i = 0; i < SIZE; ++i)
924	>	mustEqual(l.get(i), i);
925	>	t.join();
926	>	assertTrue(q.size() + l.size() >= SIZE);
927		}
928
929		/**
930	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
931	<	*/
930	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
931	>	*/
932		public void testDrainToN() {
933	+	ArrayBlockingQueue<Item> q = new ArrayBlockingQueue<Item>(SIZE * 2);
934		for (int i = 0; i < SIZE + 2; ++i) {
935	<	ArrayBlockingQueue q = populatedQueue(SIZE);
936	<	ArrayList l = new ArrayList();
935	>	for (int j = 0; j < SIZE; j++)
936	>	mustOffer(q, j);
937	>	ArrayList<Item> l = new ArrayList<Item>();
938		q.drainTo(l, i);
939	<	int k = (i < SIZE)? i : SIZE;
940	<	assertEquals(q.size(), SIZE-k);
941	<	assertEquals(l.size(), k);
942	<	for (int j = 0; j < k; ++j)
943	<	assertEquals(l.get(j), new Integer(j));
939	>	int k = (i < SIZE) ? i : SIZE;
940	>	mustEqual(k, l.size());
941	>	mustEqual(SIZE - k, q.size());
942	>	for (int j = 0; j < k; ++j)
943	>	mustEqual(l.get(j), j);
944	>	do {} while (q.poll() != null);
945		}
946		}
947
948	+	/**
949	+	* remove(null), contains(null) always return false
950	+	*/
951	+	public void testNeverContainsNull() {
952	+	Collection<?>[] qs = {
953	+	populatedQueue(0, 1, 10, false),
954	+	populatedQueue(2, 2, 10, true),
955	+	};
956
957	+	for (Collection<?> q : qs) {
958	+	assertFalse(q.contains(null));
959	+	assertFalse(q.remove(null));
960	+	}
961	+	}
962		}

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