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Comparing jsr166/src/test/tck/ArrayBlockingQueueTest.java (file contents):
Revision 1.13 by jsr166, Mon Nov 16 04:57:09 2009 UTC vs.
Revision 1.100 by jsr166, Wed Jan 27 02:55:18 2021 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
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	>	* Returns a new queue of given size containing consecutive
66	>	* Items 0 ... n - 1.
67	>	*/
68	>	static ArrayBlockingQueue<Item> populatedQueue(int n) {
69	>	return populatedQueue(n, n, n, false);
70		}
71
72		/**
73	<	* Create a queue of given size containing consecutive
74	<	* Integers 0 ... n.
73	>	* Returns a new queue of given size containing consecutive
74	>	* Items 0 ... n - 1, with given capacity range and fairness.
75		*/
76	<	private ArrayBlockingQueue populatedQueue(int n) {
77	<	ArrayBlockingQueue q = new ArrayBlockingQueue(n);
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
#	Line 39 | Line 99 | public class ArrayBlockingQueueTest exte
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		}
53	–	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	<	}
64	<	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];
73	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, false, Arrays.asList(ints));
139	>	new ArrayBlockingQueue<Item>(SIZE, false, elements);
140		shouldThrow();
141	<	}
76	<	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];
85	<	for (int i = 0; i < SIZE-1; ++i)
86	<	ints[i] = new Integer(i);
87	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, false, Arrays.asList(ints));
151	>	new ArrayBlockingQueue<Item>(SIZE, false, elements);
152		shouldThrow();
153	<	}
90	<	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)
100	<	ints[i] = new Integer(i);
101	<	ArrayBlockingQueue q = new ArrayBlockingQueue(1, false, Arrays.asList(ints));
164	>	new ArrayBlockingQueue<Object>(SIZE - 1, false,
165	>	Collections.nCopies(SIZE, ""));
166		shouldThrow();
167	<	}
104	<	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));
116	<	for (int i = 0; i < SIZE; ++i)
117	<	assertEquals(ints[i], q.poll());
118	<	}
119	<	finally {}
174	>	Item[] items = defaultItems;
175	>	Collection<Item> elements = Arrays.asList(items);
176	>	ArrayBlockingQueue<Item> q = new ArrayBlockingQueue<>(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 138 | 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();
205	<	}
206	<	for (int i = 0; i < SIZE; ++i) {
207	<	assertEquals(SIZE-i, q.remainingCapacity());
208	<	assertEquals(i, q.size());
209	<	q.add(new Integer(i));
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		}
214		}
215
216		/**
155	–	*  offer(null) throws NPE
156	–	*/
157	–	public void testOfferNull() {
158	–	try {
159	–	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
160	–	q.offer(null);
161	–	shouldThrow();
162	–	} catch (NullPointerException success) { }
163	–	}
164	–
165	–	/**
166	–	*  add(null) throws NPE
167	–	*/
168	–	public void testAddNull() {
169	–	try {
170	–	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
171	–	q.add(null);
172	–	shouldThrow();
173	–	} catch (NullPointerException success) { }
174	–	}
175	–
176	–	/**
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<>(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) {
192	<	assertTrue(q.add(new Integer(i)));
193	<	}
194	<	assertEquals(0, q.remainingCapacity());
195	<	q.add(new Integer(SIZE));
196	<	} catch (IllegalStateException success){
197	<	}
198	<	}
199	<
200	<	/**
201	<	*  addAll(null) throws NPE
202	<	*/
203	<	public void testAddAll1() {
229	>	ArrayBlockingQueue<Item> q = new ArrayBlockingQueue<>(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);
206	<	q.addAll(null);
233	>	q.add(itemFor(SIZE));
234		shouldThrow();
235	<	}
209	<	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 {
217	–	ArrayBlockingQueue q = populatedQueue(SIZE);
244		q.addAll(q);
245		shouldThrow();
246	<	}
221	<	catch (IllegalArgumentException success) {}
246	>	} catch (IllegalArgumentException success) {}
247		}
248
224	–
225	–	/**
226	–	*  addAll of a collection with null elements throws NPE
227	–	*/
228	–	public void testAddAll2() {
229	–	try {
230	–	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
231	–	Integer[] ints = new Integer[SIZE];
232	–	q.addAll(Arrays.asList(ints));
233	–	shouldThrow();
234	–	}
235	–	catch (NullPointerException success) {}
236	–	}
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<>(SIZE);
255	+	Item[] items = new Item[2]; items[0] = zero;
256		try {
257	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
244	<	Integer[] ints = new Integer[SIZE];
245	<	for (int i = 0; i < SIZE-1; ++i)
246	<	ints[i] = new Integer(i);
247	<	q.addAll(Arrays.asList(ints));
257	>	q.addAll(Arrays.asList(items));
258		shouldThrow();
259	<	}
250	<	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];
259	<	for (int i = 0; i < SIZE; ++i)
260	<	ints[i] = new Integer(i);
261	<	q.addAll(Arrays.asList(ints));
274	>	q = populatedQueue(0, size, size, false);
275	>	q.addAll(Collections.nCopies(size + 1, fortytwo));
276		shouldThrow();
277	<	}
264	<	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)));
277	<	assertTrue(q.addAll(Arrays.asList(ints)));
278	<	for (int i = 0; i < SIZE; ++i)
279	<	assertEquals(ints[i], q.poll());
280	<	}
281	<	finally {}
284	>	Item[] empty = new Item[0];
285	>	Item[] items = defaultItems;
286	>	ArrayBlockingQueue<Item> q = new ArrayBlockingQueue<>(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		/**
285	–	*  put(null) throws NPE
286	–	*/
287	–	public void testPutNull() {
288	–	try {
289	–	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
290	–	q.put(null);
291	–	shouldThrow();
292	–	}
293	–	catch (NullPointerException success){
294	–	}
295	–	catch (InterruptedException ie) {
296	–	unexpectedException();
297	–	}
298	–	}
299	–
300	–	/**
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);
309	<	assertTrue(q.contains(I));
310	<	}
311	<	assertEquals(0, q.remainingCapacity());
312	<	}
313	<	catch (InterruptedException ie) {
314	<	unexpectedException();
296	>	public void testPut() throws InterruptedException {
297	>	ArrayBlockingQueue<Item> q = new ArrayBlockingQueue<>(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	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
311	<	Thread t = new Thread(new Runnable() {
312	<	public void run() {
313	<	int added = 0;
314	<	try {
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(MEDIUM_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<>(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<>(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();
395	<	} catch (InterruptedException success){}
396	<	}
397	<	});
387	>	final ArrayBlockingQueue<Item> q = new ArrayBlockingQueue<>(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	<	try {
398	<	t.start();
399	<	Thread.sleep(SHORT_DELAY_MS);
400	<	t.interrupt();
401	<	t.join();
402	<	} catch (Exception e){
403	<	unexpectedException();
404	<	}
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) {
416	<	assertEquals(i, ((Integer)q.take()).intValue());
417	<	}
418	<	} catch (InterruptedException e){
419	<	unexpectedException();
420	<	}
421	<	}
422	<
423	<	/**
424	<	* take blocks interruptibly when empty
425	<	*/
426	<	public void testTakeFromEmpty() {
427	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
428	<	Thread t = new Thread(new Runnable() {
429	<	public void run() {
430	<	try {
431	<	q.take();
432	<	threadShouldThrow();
433	<	} catch (InterruptedException success){ }
434	<	}
435	<	});
436	<	try {
437	<	t.start();
438	<	Thread.sleep(SHORT_DELAY_MS);
439	<	t.interrupt();
440	<	t.join();
441	<	} catch (Exception e){
442	<	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	<	}});
462	<	try {
463	<	t.start();
464	<	Thread.sleep(SHORT_DELAY_MS);
465	<	t.interrupt();
466	<	t.join();
467	<	}
468	<	catch (InterruptedException ie) {
469	<	unexpectedException();
470	<	}
471	<	}
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));
495	<	} catch (InterruptedException e){
496	<	unexpectedException();
497	<	}
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());
526	<	}
527	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
528	<	} catch (InterruptedException success){
529	<	}
530	<	}});
531	<	try {
532	<	t.start();
533	<	Thread.sleep(SHORT_DELAY_MS);
534	<	t.interrupt();
535	<	t.join();
536	<	}
537	<	catch (InterruptedException ie) {
538	<	unexpectedException();
539	<	}
540	<	}
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);
548	<	Thread t = new Thread(new Runnable() {
549	<	public void run() {
550	<	try {
551	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
552	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
553	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
554	<	threadShouldThrow();
555	<	} catch (InterruptedException success) { }
556	<	}
557	<	});
558	<	try {
559	<	t.start();
560	<	Thread.sleep(SMALL_DELAY_MS);
561	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
562	<	t.interrupt();
563	<	t.join();
564	<	} catch (Exception e){
565	<	unexpectedException();
566	<	}
567	<	}
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	<	}
597	<	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){
612	<	}
613	<	}
614	<
615	<	/**
616	<	* remove(x) removes x and returns true if present
617	<	*/
618	<	public void testRemoveElement() {
619	<	ArrayBlockingQueue q = populatedQueue(SIZE);
620	<	for (int i = 1; i < SIZE; i+=2) {
621	<	assertTrue(q.remove(new Integer(i)));
622	<	}
623	<	for (int i = 0; i < SIZE; i+=2) {
624	<	assertTrue(q.remove(new Integer(i)));
625	<	assertFalse(q.remove(new Integer(i+1)));
626	<	}
627	<	assertTrue(q.isEmpty());
572	>	} catch (NoSuchElementException success) {}
573		}
574
575		/**
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 643 | 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	<	assertTrue(q.contains(one));
602	>	mustContain(q, one);
603		q.clear();
604		assertTrue(q.isEmpty());
605		}
#	Line 659 | 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<>(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 673 | 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 683 | 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 693 | 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	>	@SuppressWarnings("CollectionToArraySafeParameter")
716	>	public void testToArray_incompatibleArrayType() {
717	>	ArrayBlockingQueue<Item> q = populatedQueue(SIZE);
718	>	try {
719	>	q.toArray(new String[10]);
720	>	shouldThrow();
721	>	} catch (ArrayStoreException success) {}
722	>	try {
723	>	q.toArray(new String[0]);
724	>	shouldThrow();
725	>	} catch (ArrayStoreException success) {}
726		}
727
728		/**
729	<	* toArray with incompatible array type throws CCE
729	>	* iterator iterates through all elements
730		*/
731	<	public void testToArray1_BadArg() {
732	<	try {
733	<	ArrayBlockingQueue q = populatedQueue(SIZE);
734	<	Object o[] = q.toArray(new String[10] );
735	<	shouldThrow();
736	<	} catch (ArrayStoreException  success){}
737	<	}
731	>	public void testIterator() throws InterruptedException {
732	>	ArrayBlockingQueue<Item> q = populatedQueue(SIZE);
733	>	Iterator<? extends Item> it = q.iterator();
734	>	int i;
735	>	for (i = 0; it.hasNext(); i++)
736	>	mustContain(q, it.next());
737	>	mustEqual(i, SIZE);
738	>	assertIteratorExhausted(it);
739
740	+	it = q.iterator();
741	+	for (i = 0; it.hasNext(); i++)
742	+	mustEqual(it.next(), q.take());
743	+	mustEqual(i, SIZE);
744	+	assertIteratorExhausted(it);
745	+	}
746
747		/**
748	<	* iterator iterates through all elements
748	>	* iterator of empty collection has no elements
749		*/
750	<	public void testIterator() {
751	<	ArrayBlockingQueue q = populatedQueue(SIZE);
764	<	Iterator it = q.iterator();
765	<	try {
766	<	while (it.hasNext()){
767	<	assertEquals(it.next(), q.take());
768	<	}
769	<	} catch (InterruptedException e){
770	<	unexpectedException();
771	<	}
750	>	public void testEmptyIterator() {
751	>	assertIteratorExhausted(new ArrayBlockingQueue<>(SIZE).iterator());
752		}
753
754		/**
755		* iterator.remove removes current element
756		*/
757	<	public void testIteratorRemove () {
758	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(3);
757	>	public void testIteratorRemove() {
758	>	final ArrayBlockingQueue<Item> q = new ArrayBlockingQueue<>(3);
759		q.add(two);
760		q.add(one);
761		q.add(three);
762
763	<	Iterator it = q.iterator();
763	>	Iterator<? extends Item> it = q.iterator();
764		it.next();
765		it.remove();
766
767		it = q.iterator();
768	<	assertEquals(it.next(), one);
769	<	assertEquals(it.next(), three);
768	>	assertSame(it.next(), one);
769	>	assertSame(it.next(), three);
770		assertFalse(it.hasNext());
771		}
772
#	Line 794 | Line 774 | public class ArrayBlockingQueueTest exte
774		* iterator ordering is FIFO
775		*/
776		public void testIteratorOrdering() {
777	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(3);
777	>	final ArrayBlockingQueue<Item> q = new ArrayBlockingQueue<>(3);
778		q.add(one);
779		q.add(two);
780		q.add(three);
#	Line 802 | Line 782 | public class ArrayBlockingQueueTest exte
782		assertEquals("queue should be full", 0, q.remainingCapacity());
783
784		int k = 0;
785	<	for (Iterator it = q.iterator(); it.hasNext();) {
786	<	int i = ((Integer)(it.next())).intValue();
807	<	assertEquals(++k, i);
785	>	for (Iterator<? extends Item> it = q.iterator(); it.hasNext();) {
786	>	mustEqual(++k, it.next());
787		}
788	<	assertEquals(3, k);
788	>	mustEqual(3, k);
789		}
790
791		/**
792		* Modifications do not cause iterators to fail
793		*/
794	<	public void testWeaklyConsistentIteration () {
795	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(3);
794	>	public void testWeaklyConsistentIteration() {
795	>	final ArrayBlockingQueue<Item> q = new ArrayBlockingQueue<>(3);
796		q.add(one);
797		q.add(two);
798		q.add(three);
799	<	try {
800	<	for (Iterator it = q.iterator(); it.hasNext();) {
801	<	q.remove();
823	<	it.next();
824	<	}
825	<	}
826	<	catch (ConcurrentModificationException e) {
827	<	unexpectedException();
799	>	for (Iterator<? extends Item> it = q.iterator(); it.hasNext();) {
800	>	q.remove();
801	>	it.next();
802		}
803	<	assertEquals(0, q.size());
803	>	mustEqual(0, q.size());
804		}
805
832	–
806		/**
807		* toString contains toStrings of elements
808		*/
809		public void testToString() {
810	<	ArrayBlockingQueue q = populatedQueue(SIZE);
810	>	ArrayBlockingQueue<Item> q = populatedQueue(SIZE);
811		String s = q.toString();
812		for (int i = 0; i < SIZE; ++i) {
813	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
813	>	assertTrue(s.contains(String.valueOf(i)));
814		}
815		}
816
844	–
817		/**
818		* offer transfers elements across Executor tasks
819		*/
820		public void testOfferInExecutor() {
821	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
821	>	final ArrayBlockingQueue<Item> q = new ArrayBlockingQueue<>(2);
822		q.add(one);
823		q.add(two);
824	<	ExecutorService executor = Executors.newFixedThreadPool(2);
825	<	executor.execute(new Runnable() {
826	<	public void run() {
827	<	threadAssertFalse(q.offer(three));
828	<	try {
829	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
830	<	threadAssertEquals(0, q.remainingCapacity());
831	<	}
832	<	catch (InterruptedException e) {
833	<	threadUnexpectedException();
862	<	}
863	<	}
864	<	});
865	<
866	<	executor.execute(new Runnable() {
867	<	public void run() {
868	<	try {
869	<	Thread.sleep(SMALL_DELAY_MS);
870	<	threadAssertEquals(one, q.take());
871	<	}
872	<	catch (InterruptedException e) {
873	<	threadUnexpectedException();
874	<	}
875	<	}
876	<	});
877	<
878	<	joinPool(executor);
824	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
825	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
826	>	try (PoolCleaner cleaner = cleaner(executor)) {
827	>	executor.execute(new CheckedRunnable() {
828	>	public void realRun() throws InterruptedException {
829	>	assertFalse(q.offer(three));
830	>	threadsStarted.await();
831	>	assertTrue(q.offer(three, LONG_DELAY_MS, MILLISECONDS));
832	>	mustEqual(0, q.remainingCapacity());
833	>	}});
834
835	+	executor.execute(new CheckedRunnable() {
836	+	public void realRun() throws InterruptedException {
837	+	threadsStarted.await();
838	+	mustEqual(0, q.remainingCapacity());
839	+	assertSame(one, q.take());
840	+	}});
841	+	}
842		}
843
844		/**
845	<	* poll retrieves elements across Executor threads
845	>	* timed poll retrieves elements across Executor threads
846		*/
847		public void testPollInExecutor() {
848	<	final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
849	<	ExecutorService executor = Executors.newFixedThreadPool(2);
850	<	executor.execute(new Runnable() {
851	<	public void run() {
852	<	threadAssertNull(q.poll());
853	<	try {
854	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
855	<	threadAssertTrue(q.isEmpty());
856	<	}
857	<	catch (InterruptedException e) {
858	<	threadUnexpectedException();
897	<	}
898	<	}
899	<	});
848	>	final ArrayBlockingQueue<Item> q = new ArrayBlockingQueue<>(2);
849	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
850	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
851	>	try (PoolCleaner cleaner = cleaner(executor)) {
852	>	executor.execute(new CheckedRunnable() {
853	>	public void realRun() throws InterruptedException {
854	>	assertNull(q.poll());
855	>	threadsStarted.await();
856	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
857	>	checkEmpty(q);
858	>	}});
859
860	<	executor.execute(new Runnable() {
861	<	public void run() {
862	<	try {
904	<	Thread.sleep(SMALL_DELAY_MS);
860	>	executor.execute(new CheckedRunnable() {
861	>	public void realRun() throws InterruptedException {
862	>	threadsStarted.await();
863		q.put(one);
864	<	}
907	<	catch (InterruptedException e) {
908	<	threadUnexpectedException();
909	<	}
910	<	}
911	<	});
912	<
913	<	joinPool(executor);
914	<	}
915	<
916	<	/**
917	<	* A deserialized serialized queue has same elements in same order
918	<	*/
919	<	public void testSerialization() {
920	<	ArrayBlockingQueue q = populatedQueue(SIZE);
921	<
922	<	try {
923	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
924	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
925	<	out.writeObject(q);
926	<	out.close();
927	<
928	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
929	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
930	<	ArrayBlockingQueue r = (ArrayBlockingQueue)in.readObject();
931	<	assertEquals(q.size(), r.size());
932	<	while (!q.isEmpty())
933	<	assertEquals(q.remove(), r.remove());
934	<	} catch (Exception e){
935	<	unexpectedException();
936	<	}
937	<	}
938	<
939	<	/**
940	<	* drainTo(null) throws NPE
941	<	*/
942	<	public void testDrainToNull() {
943	<	ArrayBlockingQueue q = populatedQueue(SIZE);
944	<	try {
945	<	q.drainTo(null);
946	<	shouldThrow();
947	<	} catch (NullPointerException success) {
864	>	}});
865		}
866		}
867
868		/**
869	<	* drainTo(this) throws IAE
869	>	* A deserialized/reserialized queue has same elements in same order
870		*/
871	<	public void testDrainToSelf() {
872	<	ArrayBlockingQueue q = populatedQueue(SIZE);
873	<	try {
874	<	q.drainTo(q);
875	<	shouldThrow();
876	<	} catch (IllegalArgumentException success) {
871	>	public void testSerialization() throws Exception {
872	>	Queue<Item> x = populatedQueue(SIZE);
873	>	Queue<Item> y = serialClone(x);
874	>
875	>	assertNotSame(x, y);
876	>	mustEqual(x.size(), y.size());
877	>	mustEqual(x.toString(), y.toString());
878	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
879	>	while (!x.isEmpty()) {
880	>	assertFalse(y.isEmpty());
881	>	mustEqual(x.remove(), y.remove());
882		}
883	+	assertTrue(y.isEmpty());
884		}
885
886		/**
887		* drainTo(c) empties queue into another collection c
888		*/
889		public void testDrainTo() {
890	<	ArrayBlockingQueue q = populatedQueue(SIZE);
891	<	ArrayList l = new ArrayList();
890	>	ArrayBlockingQueue<Item> q = populatedQueue(SIZE);
891	>	ArrayList<Item> l = new ArrayList<>();
892		q.drainTo(l);
893	<	assertEquals(q.size(), 0);
894	<	assertEquals(l.size(), SIZE);
893	>	mustEqual(0, q.size());
894	>	mustEqual(SIZE, l.size());
895		for (int i = 0; i < SIZE; ++i)
896	<	assertEquals(l.get(i), new Integer(i));
896	>	mustEqual(l.get(i), i);
897		q.add(zero);
898		q.add(one);
899		assertFalse(q.isEmpty());
900	<	assertTrue(q.contains(zero));
901	<	assertTrue(q.contains(one));
900	>	mustContain(q, zero);
901	>	mustContain(q, one);
902		l.clear();
903		q.drainTo(l);
904	<	assertEquals(q.size(), 0);
905	<	assertEquals(l.size(), 2);
904	>	mustEqual(0, q.size());
905	>	mustEqual(2, l.size());
906		for (int i = 0; i < 2; ++i)
907	<	assertEquals(l.get(i), new Integer(i));
907	>	mustEqual(l.get(i), i);
908		}
909
910		/**
911		* drainTo empties full queue, unblocking a waiting put.
912		*/
913	<	public void testDrainToWithActivePut() {
914	<	final ArrayBlockingQueue q = populatedQueue(SIZE);
915	<	Thread t = new Thread(new Runnable() {
916	<	public void run() {
917	<	try {
918	<	q.put(new Integer(SIZE+1));
996	<	} catch (InterruptedException ie){
997	<	threadUnexpectedException();
998	<	}
999	<	}
1000	<	});
1001	<	try {
1002	<	t.start();
1003	<	ArrayList l = new ArrayList();
1004	<	q.drainTo(l);
1005	<	assertTrue(l.size() >= SIZE);
1006	<	for (int i = 0; i < SIZE; ++i)
1007	<	assertEquals(l.get(i), new Integer(i));
1008	<	t.join();
1009	<	assertTrue(q.size() + l.size() >= SIZE);
1010	<	} catch (Exception e){
1011	<	unexpectedException();
1012	<	}
1013	<	}
913	>	public void testDrainToWithActivePut() throws InterruptedException {
914	>	final ArrayBlockingQueue<Item> q = populatedQueue(SIZE);
915	>	Thread t = new Thread(new CheckedRunnable() {
916	>	public void realRun() throws InterruptedException {
917	>	q.put(new Item(SIZE + 1));
918	>	}});
919
920	<	/**
921	<	* drainTo(null, n) throws NPE
922	<	*/
923	<	public void testDrainToNullN() {
924	<	ArrayBlockingQueue q = populatedQueue(SIZE);
925	<	try {
926	<	q.drainTo(null, 0);
927	<	shouldThrow();
1023	<	} catch (NullPointerException success) {
1024	<	}
1025	<	}
1026	<
1027	<	/**
1028	<	* drainTo(this, n) throws IAE
1029	<	*/
1030	<	public void testDrainToSelfN() {
1031	<	ArrayBlockingQueue q = populatedQueue(SIZE);
1032	<	try {
1033	<	q.drainTo(q, 0);
1034	<	shouldThrow();
1035	<	} catch (IllegalArgumentException success) {
1036	<	}
920	>	t.start();
921	>	ArrayList<Item> l = new ArrayList<>();
922	>	q.drainTo(l);
923	>	assertTrue(l.size() >= SIZE);
924	>	for (int i = 0; i < SIZE; ++i)
925	>	mustEqual(l.get(i), i);
926	>	t.join();
927	>	assertTrue(q.size() + l.size() >= SIZE);
928		}
929
930		/**
931	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
931	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
932		*/
933		public void testDrainToN() {
934	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE*2);
934	>	ArrayBlockingQueue<Item> q = new ArrayBlockingQueue<>(SIZE * 2);
935		for (int i = 0; i < SIZE + 2; ++i) {
936		for (int j = 0; j < SIZE; j++)
937	<	assertTrue(q.offer(new Integer(j)));
938	<	ArrayList l = new ArrayList();
937	>	mustOffer(q, j);
938	>	ArrayList<Item> l = new ArrayList<>();
939		q.drainTo(l, i);
940	<	int k = (i < SIZE)? i : SIZE;
941	<	assertEquals(l.size(), k);
942	<	assertEquals(q.size(), SIZE-k);
940	>	int k = (i < SIZE) ? i : SIZE;
941	>	mustEqual(k, l.size());
942	>	mustEqual(SIZE - k, q.size());
943		for (int j = 0; j < k; ++j)
944	<	assertEquals(l.get(j), new Integer(j));
945	<	while (q.poll() != null) ;
944	>	mustEqual(l.get(j), j);
945	>	do {} while (q.poll() != null);
946		}
947		}
948
949	+	/**
950	+	* remove(null), contains(null) always return false
951	+	*/
952	+	public void testNeverContainsNull() {
953	+	Collection<?>[] qs = {
954	+	populatedQueue(0, 1, 10, false),
955	+	populatedQueue(2, 2, 10, true),
956	+	};
957
958	+	for (Collection<?> q : qs) {
959	+	assertFalse(q.contains(null));
960	+	assertFalse(q.remove(null));
961	+	}
962	+	}
963		}

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