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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.4 by jsr166, Sat Aug 1 22:09:13 2009 UTC vs.
Revision 1.54 by jsr166, Wed Dec 31 16:44:02 2014 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 John Vint
6		*/
7
8	<	import java.io.BufferedInputStream;
9	<	import java.io.BufferedOutputStream;
10	<	import java.io.ByteArrayInputStream;
11	<	import java.io.ByteArrayOutputStream;
12	<	import java.io.ObjectInputStream;
13	<	import java.io.ObjectOutputStream;
14	<	import java.util.ArrayList;
8	>	import junit.framework.*;
9		import java.util.Arrays;
10	<	import java.util.ConcurrentModificationException;
10	>	import java.util.ArrayList;
11	>	import java.util.Collection;
12		import java.util.Iterator;
13	+	import java.util.List;
14		import java.util.NoSuchElementException;
15	<	import java.util.concurrent.*;
16	<	import junit.framework.Test;
17	<	import junit.framework.TestSuite;
15	>	import java.util.Queue;
16	>	import java.util.concurrent.BlockingQueue;
17	>	import java.util.concurrent.CountDownLatch;
18	>	import java.util.concurrent.Executors;
19	>	import java.util.concurrent.ExecutorService;
20	>	import java.util.concurrent.LinkedTransferQueue;
21	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
22
23	+	@SuppressWarnings({"unchecked", "rawtypes"})
24		public class LinkedTransferQueueTest extends JSR166TestCase {
25
26	+	public static class Generic extends BlockingQueueTest {
27	+	protected BlockingQueue emptyCollection() {
28	+	return new LinkedTransferQueue();
29	+	}
30	+	}
31	+
32		public static void main(String[] args) {
33		junit.textui.TestRunner.run(suite());
34		}
35
36		public static Test suite() {
37	<	return new TestSuite(LinkedTransferQueueTest.class);
37	>	return newTestSuite(LinkedTransferQueueTest.class,
38	>	new Generic().testSuite());
39		}
40
41		/**
42	<	* Constructor builds new queue with size being zero and empty being true
42	>	* Constructor builds new queue with size being zero and empty
43	>	* being true
44		*/
45		public void testConstructor1() {
46		assertEquals(0, new LinkedTransferQueue().size());
#	Line 39 | Line 48 | public class LinkedTransferQueueTest ext
48		}
49
50		/**
51	<	* Initializing constructor with null collection throws NPE
51	>	* Initializing constructor with null collection throws
52	>	* NullPointerException
53		*/
54		public void testConstructor2() {
55		try {
56		new LinkedTransferQueue(null);
57		shouldThrow();
58	<	} catch (NullPointerException success) {
49	<	}
58	>	} catch (NullPointerException success) {}
59		}
60
61		/**
62	<	* Initializing from Collection of null elements throws NPE
62	>	* Initializing from Collection of null elements throws
63	>	* NullPointerException
64		*/
65		public void testConstructor3() {
66	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
67		try {
68	<	Integer[] ints = new Integer[SIZE];
58	<	LinkedTransferQueue q = new LinkedTransferQueue(Arrays.asList(ints));
68	>	new LinkedTransferQueue(elements);
69		shouldThrow();
70	<	} catch (NullPointerException success) {
61	<	}
70	>	} catch (NullPointerException success) {}
71		}
72
73		/**
74		* Initializing constructor with a collection containing some null elements
75	<	* throws NPE
75	>	* throws NullPointerException
76		*/
77		public void testConstructor4() {
78	+	Integer[] ints = new Integer[SIZE];
79	+	for (int i = 0; i < SIZE-1; ++i)
80	+	ints[i] = i;
81	+	Collection<Integer> elements = Arrays.asList(ints);
82		try {
83	<	Integer[] ints = new Integer[SIZE];
71	<	for (int i = 0; i < SIZE - 1; ++i) {
72	<	ints[i] = new Integer(i);
73	<	}
74	<	LinkedTransferQueue q = new LinkedTransferQueue(Arrays.asList(ints));
83	>	new LinkedTransferQueue(elements);
84		shouldThrow();
85	<	} catch (NullPointerException success) {
77	<	}
85	>	} catch (NullPointerException success) {}
86		}
87
88		/**
89		* Queue contains all elements of the collection it is initialized by
90		*/
91		public void testConstructor5() {
92	<	try {
93	<	Integer[] ints = new Integer[SIZE];
94	<	for (int i = 0; i < SIZE; ++i) {
95	<	ints[i] = new Integer(i);
96	<	}
97	<	LinkedTransferQueue q = new LinkedTransferQueue(Arrays.asList(ints));
98	<	for (int i = 0; i < SIZE; ++i) {
99	<	assertEquals(ints[i], q.poll());
100	<	}
101	<	} finally {
92	>	Integer[] ints = new Integer[SIZE];
93	>	for (int i = 0; i < SIZE; ++i) {
94	>	ints[i] = i;
95	>	}
96	>	List intList = Arrays.asList(ints);
97	>	LinkedTransferQueue q
98	>	= new LinkedTransferQueue(intList);
99	>	assertEquals(q.size(), intList.size());
100	>	assertEquals(q.toString(), intList.toString());
101	>	assertTrue(Arrays.equals(q.toArray(),
102	>	intList.toArray()));
103	>	assertTrue(Arrays.equals(q.toArray(new Object[0]),
104	>	intList.toArray(new Object[0])));
105	>	assertTrue(Arrays.equals(q.toArray(new Object[SIZE]),
106	>	intList.toArray(new Object[SIZE])));
107	>	for (int i = 0; i < SIZE; ++i) {
108	>	assertEquals(ints[i], q.poll());
109		}
110		}
111
112		/**
113	<	* Remaining capacity never decrease nor increase on add or remove
113	>	* remainingCapacity() always returns Integer.MAX_VALUE
114		*/
115		public void testRemainingCapacity() {
116	<	LinkedTransferQueue q = populatedQueue(SIZE);
102	<	int remainingCapacity = q.remainingCapacity();
116	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
117		for (int i = 0; i < SIZE; ++i) {
118	<	assertEquals(remainingCapacity, q.remainingCapacity());
118	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
119		assertEquals(SIZE - i, q.size());
120		q.remove();
121		}
122		for (int i = 0; i < SIZE; ++i) {
123	<	assertEquals(remainingCapacity, q.remainingCapacity());
123	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
124		assertEquals(i, q.size());
125	<	q.add(new Integer(i));
112	<	}
113	<	}
114	<
115	<	/**
116	<	* offer(null) throws NPE
117	<	*/
118	<	public void testOfferNull() {
119	<	try {
120	<	LinkedTransferQueue q = new LinkedTransferQueue();
121	<	q.offer(null);
122	<	shouldThrow();
123	<	} catch (NullPointerException success) {
124	<	}
125	<	}
126	<
127	<	/**
128	<	* add(null) throws NPE
129	<	*/
130	<	public void testAddNull() {
131	<	try {
132	<	LinkedTransferQueue q = new LinkedTransferQueue();
133	<	q.add(null);
134	<	shouldThrow();
135	<	} catch (NullPointerException success) {
136	<	}
137	<	}
138	<
139	<	/**
140	<	* addAll(null) throws NPE
141	<	*/
142	<	public void testAddAll1() {
143	<	try {
144	<	LinkedTransferQueue q = new LinkedTransferQueue();
145	<	q.addAll(null);
146	<	shouldThrow();
147	<	} catch (NullPointerException success) {
125	>	q.add(i);
126		}
127		}
128
129		/**
130	<	* addAll(this) throws IAE
130	>	* addAll(this) throws IllegalArgumentException
131		*/
132		public void testAddAllSelf() {
133		try {
134		LinkedTransferQueue q = populatedQueue(SIZE);
135		q.addAll(q);
136		shouldThrow();
137	<	} catch (IllegalArgumentException success) {
160	<	}
137	>	} catch (IllegalArgumentException success) {}
138		}
139
140		/**
141	<	* addAll of a collection with null elements throws NPE
142	<	*/
166	<	public void testAddAll2() {
167	<	try {
168	<	LinkedTransferQueue q = new LinkedTransferQueue();
169	<	Integer[] ints = new Integer[SIZE];
170	<	q.addAll(Arrays.asList(ints));
171	<	shouldThrow();
172	<	} catch (NullPointerException success) {
173	<	}
174	<	}
175	<
176	<	/**
177	<	* addAll of a collection with any null elements throws NPE after
178	<	* possibly adding some elements
141	>	* addAll of a collection with any null elements throws
142	>	* NullPointerException after possibly adding some elements
143		*/
144		public void testAddAll3() {
145		try {
146		LinkedTransferQueue q = new LinkedTransferQueue();
147		Integer[] ints = new Integer[SIZE];
148		for (int i = 0; i < SIZE - 1; ++i) {
149	<	ints[i] = new Integer(i);
149	>	ints[i] = i;
150		}
151		q.addAll(Arrays.asList(ints));
152		shouldThrow();
153	<	} catch (NullPointerException success) {
190	<	}
153	>	} catch (NullPointerException success) {}
154		}
155
156		/**
157		* Queue contains all elements, in traversal order, of successful addAll
158		*/
159		public void testAddAll5() {
160	<	try {
161	<	Integer[] empty = new Integer[0];
162	<	Integer[] ints = new Integer[SIZE];
163	<	for (int i = 0; i < SIZE; ++i) {
201	<	ints[i] = new Integer(i);
202	<	}
203	<	LinkedTransferQueue q = new LinkedTransferQueue();
204	<	assertFalse(q.addAll(Arrays.asList(empty)));
205	<	assertTrue(q.addAll(Arrays.asList(ints)));
206	<	for (int i = 0; i < SIZE; ++i) {
207	<	assertEquals(ints[i], q.poll());
208	<	}
209	<	} finally {
160	>	Integer[] empty = new Integer[0];
161	>	Integer[] ints = new Integer[SIZE];
162	>	for (int i = 0; i < SIZE; ++i) {
163	>	ints[i] = i;
164		}
165	<	}
166	<
167	<	/**
168	<	* put(null) throws NPE
169	<	*/
216	<	public void testPutNull() {
217	<	try {
218	<	LinkedTransferQueue q = new LinkedTransferQueue();
219	<	q.put(null);
220	<	shouldThrow();
221	<	} catch (NullPointerException success) {
222	<	} catch (Exception ie) {
223	<	unexpectedException();
165	>	LinkedTransferQueue q = new LinkedTransferQueue();
166	>	assertFalse(q.addAll(Arrays.asList(empty)));
167	>	assertTrue(q.addAll(Arrays.asList(ints)));
168	>	for (int i = 0; i < SIZE; ++i) {
169	>	assertEquals(ints[i], q.poll());
170		}
171		}
172
#	Line 228 | Line 174 | public class LinkedTransferQueueTest ext
174		* all elements successfully put are contained
175		*/
176		public void testPut() {
177	<	try {
178	<	LinkedTransferQueue q = new LinkedTransferQueue();
179	<	for (int i = 0; i < SIZE; ++i) {
180	<	Integer I = new Integer(i);
181	<	q.put(I);
236	<	assertTrue(q.contains(I));
237	<	}
238	<	} catch (Exception ie) {
239	<	unexpectedException();
177	>	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
178	>	for (int i = 0; i < SIZE; ++i) {
179	>	assertEquals(i, q.size());
180	>	q.put(i);
181	>	assertTrue(q.contains(i));
182		}
183		}
184
185		/**
186		* take retrieves elements in FIFO order
187		*/
188	<	public void testTake() {
189	<	try {
190	<	LinkedTransferQueue q = populatedQueue(SIZE);
191	<	for (int i = 0; i < SIZE; ++i) {
250	<	assertEquals(i, ((Integer) q.take()).intValue());
251	<	}
252	<	} catch (InterruptedException e) {
253	<	unexpectedException();
188	>	public void testTake() throws InterruptedException {
189	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
190	>	for (int i = 0; i < SIZE; ++i) {
191	>	assertEquals(i, (int) q.take());
192		}
193		}
194
195		/**
196	<	* take blocks interruptibly when empty
196	>	* take removes existing elements until empty, then blocks interruptibly
197		*/
198	<	public void testTakeFromEmpty() {
199	<	final LinkedTransferQueue q = new LinkedTransferQueue();
200	<	Thread t = new Thread(new Runnable() {
198	>	public void testBlockingTake() throws InterruptedException {
199	>	final BlockingQueue q = populatedQueue(SIZE);
200	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
201	>	Thread t = newStartedThread(new CheckedRunnable() {
202	>	public void realRun() throws InterruptedException {
203	>	for (int i = 0; i < SIZE; ++i) {
204	>	assertEquals(i, q.take());
205	>	}
206
207	<	public void run() {
207	>	Thread.currentThread().interrupt();
208		try {
209		q.take();
210	<	threadShouldThrow();
211	<	} catch (InterruptedException success) {
212	<	}
270	<	}
271	<	});
272	<	try {
273	<	t.start();
274	<	Thread.sleep(SHORT_DELAY_MS);
275	<	t.interrupt();
276	<	t.join();
277	<	} catch (Exception e) {
278	<	unexpectedException();
279	<	}
280	<	}
210	>	shouldThrow();
211	>	} catch (InterruptedException success) {}
212	>	assertFalse(Thread.interrupted());
213
214	<	/**
283	<	* Take removes existing elements until empty, then blocks interruptibly
284	<	*/
285	<	public void testBlockingTake() {
286	<	Thread t = new Thread(new Runnable() {
287	<
288	<	public void run() {
214	>	pleaseInterrupt.countDown();
215		try {
290	–	LinkedTransferQueue q = populatedQueue(SIZE);
291	–	for (int i = 0; i < SIZE; ++i) {
292	–	assertEquals(i, ((Integer) q.take()).intValue());
293	–	}
216		q.take();
217	<	threadShouldThrow();
218	<	} catch (InterruptedException success) {
219	<	}
220	<	}
221	<	});
222	<	t.start();
223	<	try {
224	<	Thread.sleep(SHORT_DELAY_MS);
225	<	t.interrupt();
304	<	t.join();
305	<	} catch (InterruptedException ie) {
306	<	unexpectedException();
307	<	}
217	>	shouldThrow();
218	>	} catch (InterruptedException success) {}
219	>	assertFalse(Thread.interrupted());
220	>	}});
221	>
222	>	await(pleaseInterrupt);
223	>	assertThreadStaysAlive(t);
224	>	t.interrupt();
225	>	awaitTermination(t);
226		}
227
228		/**
229		* poll succeeds unless empty
230		*/
231	<	public void testPoll() {
232	<	LinkedTransferQueue q = populatedQueue(SIZE);
231	>	public void testPoll() throws InterruptedException {
232	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
233		for (int i = 0; i < SIZE; ++i) {
234	<	assertEquals(i, ((Integer) q.poll()).intValue());
234	>	assertEquals(i, (int) q.poll());
235		}
236		assertNull(q.poll());
237	+	checkEmpty(q);
238		}
239
240		/**
241	<	* timed pool with zero timeout succeeds when non-empty, else times out
241	>	* timed poll with zero timeout succeeds when non-empty, else times out
242		*/
243	<	public void testTimedPoll0() {
244	<	try {
245	<	LinkedTransferQueue q = populatedQueue(SIZE);
246	<	for (int i = 0; i < SIZE; ++i) {
328	<	assertEquals(i, ((Integer) q.poll(0, TimeUnit.MILLISECONDS)).intValue());
329	<	}
330	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
331	<	} catch (InterruptedException e) {
332	<	unexpectedException();
243	>	public void testTimedPoll0() throws InterruptedException {
244	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
245	>	for (int i = 0; i < SIZE; ++i) {
246	>	assertEquals(i, (int) q.poll(0, MILLISECONDS));
247		}
248	+	assertNull(q.poll(0, MILLISECONDS));
249	+	checkEmpty(q);
250		}
251
252		/**
253	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
253	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
254		*/
255	<	public void testTimedPoll() {
256	<	try {
257	<	LinkedTransferQueue q = populatedQueue(SIZE);
258	<	for (int i = 0; i < SIZE; ++i) {
259	<	assertEquals(i, ((Integer) q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
260	<	}
261	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
262	<	} catch (InterruptedException e) {
263	<	unexpectedException();
264	<	}
255	>	public void testTimedPoll() throws InterruptedException {
256	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
257	>	for (int i = 0; i < SIZE; ++i) {
258	>	long startTime = System.nanoTime();
259	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
260	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
261	>	}
262	>	long startTime = System.nanoTime();
263	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
264	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
265	>	checkEmpty(q);
266		}
267
268		/**
269		* Interrupted timed poll throws InterruptedException instead of
270		* returning timeout status
271		*/
272	<	public void testInterruptedTimedPoll() {
273	<	Thread t = new Thread(new Runnable() {
274	<
275	<	public void run() {
272	>	public void testInterruptedTimedPoll() throws InterruptedException {
273	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
274	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
275	>	Thread t = newStartedThread(new CheckedRunnable() {
276	>	public void realRun() throws InterruptedException {
277	>	for (int i = 0; i < SIZE; ++i) {
278	>	long t0 = System.nanoTime();
279	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
280	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
281	>	}
282	>	long t0 = System.nanoTime();
283	>	aboutToWait.countDown();
284		try {
285	<	LinkedTransferQueue q = populatedQueue(SIZE);
286	<	for (int i = 0; i < SIZE; ++i) {
362	<	threadAssertEquals(i, ((Integer) q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
363	<	}
364	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
285	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
286	>	shouldThrow();
287		} catch (InterruptedException success) {
288	+	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
289		}
290	<	}
291	<	});
292	<	t.start();
293	<	try {
294	<	Thread.sleep(SHORT_DELAY_MS);
295	<	t.interrupt();
296	<	t.join();
374	<	} catch (InterruptedException ie) {
375	<	unexpectedException();
376	<	}
290	>	}});
291	>
292	>	aboutToWait.await();
293	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
294	>	t.interrupt();
295	>	awaitTermination(t, MEDIUM_DELAY_MS);
296	>	checkEmpty(q);
297		}
298
299		/**
300	<	* timed poll before a delayed offer fails; after offer succeeds;
301	<	* on interruption throws
302	<	*/
303	<	public void testTimedPollWithOffer() {
304	<	final LinkedTransferQueue q = new LinkedTransferQueue();
305	<	Thread t = new Thread(new Runnable() {
306	<
307	<	public void run() {
308	<	try {
309	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
310	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
311	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
392	<	threadShouldThrow();
393	<	} catch (InterruptedException success) {
300	>	* timed poll after thread interrupted throws InterruptedException
301	>	* instead of returning timeout status
302	>	*/
303	>	public void testTimedPollAfterInterrupt() throws InterruptedException {
304	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
305	>	Thread t = newStartedThread(new CheckedRunnable() {
306	>	public void realRun() throws InterruptedException {
307	>	Thread.currentThread().interrupt();
308	>	for (int i = 0; i < SIZE; ++i) {
309	>	long t0 = System.nanoTime();
310	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
311	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
312		}
313	<	}
314	<	});
315	<	try {
316	<	t.start();
317	<	Thread.sleep(SMALL_DELAY_MS);
318	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
319	<	t.interrupt();
320	<	t.join();
403	<	} catch (Exception e) {
404	<	unexpectedException();
405	<	}
313	>	try {
314	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
315	>	shouldThrow();
316	>	} catch (InterruptedException success) {}
317	>	}});
318	>
319	>	awaitTermination(t, MEDIUM_DELAY_MS);
320	>	checkEmpty(q);
321		}
322
323		/**
324		* peek returns next element, or null if empty
325		*/
326	<	public void testPeek() {
327	<	LinkedTransferQueue q = populatedQueue(SIZE);
326	>	public void testPeek() throws InterruptedException {
327	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
328		for (int i = 0; i < SIZE; ++i) {
329	<	assertEquals(i, ((Integer) q.peek()).intValue());
330	<	q.poll();
329	>	assertEquals(i, (int) q.peek());
330	>	assertEquals(i, (int) q.poll());
331		assertTrue(q.peek() == null ||
332	<	i != ((Integer) q.peek()).intValue());
332	>	i != (int) q.peek());
333		}
334		assertNull(q.peek());
335	+	checkEmpty(q);
336		}
337
338		/**
339	<	* element returns next element, or throws NSEE if empty
339	>	* element returns next element, or throws NoSuchElementException if empty
340		*/
341	<	public void testElement() {
342	<	LinkedTransferQueue q = populatedQueue(SIZE);
341	>	public void testElement() throws InterruptedException {
342	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
343		for (int i = 0; i < SIZE; ++i) {
344	<	assertEquals(i, ((Integer) q.element()).intValue());
345	<	q.poll();
344	>	assertEquals(i, (int) q.element());
345	>	assertEquals(i, (int) q.poll());
346		}
347		try {
348		q.element();
349		shouldThrow();
350	<	} catch (NoSuchElementException success) {
351	<	}
350	>	} catch (NoSuchElementException success) {}
351	>	checkEmpty(q);
352		}
353
354		/**
355	<	* remove removes next element, or throws NSEE if empty
355	>	* remove removes next element, or throws NoSuchElementException if empty
356		*/
357	<	public void testRemove() {
358	<	LinkedTransferQueue q = populatedQueue(SIZE);
357	>	public void testRemove() throws InterruptedException {
358	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
359		for (int i = 0; i < SIZE; ++i) {
360	<	assertEquals(i, ((Integer) q.remove()).intValue());
360	>	assertEquals(i, (int) q.remove());
361		}
362		try {
363		q.remove();
364		shouldThrow();
365	<	} catch (NoSuchElementException success) {
366	<	}
451	<	}
452	<
453	<	/**
454	<	* remove(x) removes x and returns true if present
455	<	*/
456	<	public void testRemoveElement() {
457	<	LinkedTransferQueue q = populatedQueue(SIZE);
458	<	for (int i = 1; i < SIZE; i += 2) {
459	<	assertTrue(q.remove(new Integer(i)));
460	<	}
461	<	for (int i = 0; i < SIZE; i += 2) {
462	<	assertTrue(q.remove(new Integer(i)));
463	<	assertFalse(q.remove(new Integer(i + 1)));
464	<	}
465	<	assertTrue(q.isEmpty());
365	>	} catch (NoSuchElementException success) {}
366	>	checkEmpty(q);
367		}
368
369		/**
370		* An add following remove(x) succeeds
371		*/
372	<	public void testRemoveElementAndAdd() {
373	<	try {
374	<	LinkedTransferQueue q = new LinkedTransferQueue();
375	<	assertTrue(q.add(new Integer(1)));
376	<	assertTrue(q.add(new Integer(2)));
377	<	assertTrue(q.remove(new Integer(1)));
378	<	assertTrue(q.remove(new Integer(2)));
379	<	assertTrue(q.add(new Integer(3)));
479	<	assertTrue(q.take() != null);
480	<	} catch (Exception e) {
481	<	unexpectedException();
482	<	}
372	>	public void testRemoveElementAndAdd() throws InterruptedException {
373	>	LinkedTransferQueue q = new LinkedTransferQueue();
374	>	assertTrue(q.add(one));
375	>	assertTrue(q.add(two));
376	>	assertTrue(q.remove(one));
377	>	assertTrue(q.remove(two));
378	>	assertTrue(q.add(three));
379	>	assertSame(q.take(), three);
380		}
381
382		/**
383		* contains(x) reports true when elements added but not yet removed
384		*/
385		public void testContains() {
386	<	LinkedTransferQueue q = populatedQueue(SIZE);
386	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
387		for (int i = 0; i < SIZE; ++i) {
388	<	assertTrue(q.contains(new Integer(i)));
389	<	q.poll();
390	<	assertFalse(q.contains(new Integer(i)));
388	>	assertTrue(q.contains(i));
389	>	assertEquals(i, (int) q.poll());
390	>	assertFalse(q.contains(i));
391		}
392		}
393
394		/**
395		* clear removes all elements
396		*/
397	<	public void testClear() {
397	>	public void testClear() throws InterruptedException {
398		LinkedTransferQueue q = populatedQueue(SIZE);
502	–	int remainingCapacity = q.remainingCapacity();
399		q.clear();
400	<	assertTrue(q.isEmpty());
401	<	assertEquals(0, q.size());
506	<	assertEquals(remainingCapacity, q.remainingCapacity());
400	>	checkEmpty(q);
401	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
402		q.add(one);
403		assertFalse(q.isEmpty());
404	+	assertEquals(1, q.size());
405		assertTrue(q.contains(one));
406		q.clear();
407	<	assertTrue(q.isEmpty());
407	>	checkEmpty(q);
408		}
409
410		/**
411		* containsAll(c) is true when c contains a subset of elements
412		*/
413		public void testContainsAll() {
414	<	LinkedTransferQueue q = populatedQueue(SIZE);
415	<	LinkedTransferQueue p = new LinkedTransferQueue();
414	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
415	>	LinkedTransferQueue<Integer> p = new LinkedTransferQueue<Integer>();
416		for (int i = 0; i < SIZE; ++i) {
417		assertTrue(q.containsAll(p));
418		assertFalse(p.containsAll(q));
419	<	p.add(new Integer(i));
419	>	p.add(i);
420		}
421		assertTrue(p.containsAll(q));
422		}
423
424		/**
425	<	* retainAll(c) retains only those elements of c and reports true if changed
425	>	* retainAll(c) retains only those elements of c and reports true
426	>	* if changed
427		*/
428		public void testRetainAll() {
429		LinkedTransferQueue q = populatedQueue(SIZE);
#	Line 545 | Line 442 | public class LinkedTransferQueueTest ext
442		}
443
444		/**
445	<	* removeAll(c) removes only those elements of c and reports true if changed
445	>	* removeAll(c) removes only those elements of c and reports true
446	>	* if changed
447		*/
448		public void testRemoveAll() {
449		for (int i = 1; i < SIZE; ++i) {
#	Line 554 | Line 452 | public class LinkedTransferQueueTest ext
452		assertTrue(q.removeAll(p));
453		assertEquals(SIZE - i, q.size());
454		for (int j = 0; j < i; ++j) {
455	<	Integer I = (Integer) (p.remove());
558	<	assertFalse(q.contains(I));
455	>	assertFalse(q.contains(p.remove()));
456		}
457		}
458		}
459
460		/**
461	<	* toArray contains all elements
461	>	* toArray() contains all elements in FIFO order
462		*/
463		public void testToArray() {
464		LinkedTransferQueue q = populatedQueue(SIZE);
465		Object[] o = q.toArray();
466	<	try {
467	<	for (int i = 0; i < o.length; i++) {
571	<	assertEquals(o[i], q.take());
572	<	}
573	<	} catch (InterruptedException e) {
574	<	unexpectedException();
466	>	for (int i = 0; i < o.length; i++) {
467	>	assertSame(o[i], q.poll());
468		}
469		}
470
471		/**
472	<	* toArray(a) contains all elements
472	>	* toArray(a) contains all elements in FIFO order
473		*/
474		public void testToArray2() {
475	<	LinkedTransferQueue q = populatedQueue(SIZE);
475	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
476		Integer[] ints = new Integer[SIZE];
477	<	ints = (Integer[]) q.toArray(ints);
478	<	try {
479	<	for (int i = 0; i < ints.length; i++) {
480	<	assertEquals(ints[i], q.take());
588	<	}
589	<	} catch (InterruptedException e) {
590	<	unexpectedException();
591	<	}
592	<	}
593	<
594	<	/**
595	<	* toArray(null) throws NPE
596	<	*/
597	<	public void testToArray_BadArg() {
598	<	try {
599	<	LinkedTransferQueue q = populatedQueue(SIZE);
600	<	Object o[] = q.toArray(null);
601	<	shouldThrow();
602	<	} catch (NullPointerException success) {
477	>	Integer[] array = q.toArray(ints);
478	>	assertSame(ints, array);
479	>	for (int i = 0; i < ints.length; i++) {
480	>	assertSame(ints[i], q.poll());
481		}
482		}
483
484		/**
485	<	* toArray with incompatible array type throws CCE
485	>	* toArray(incompatible array type) throws ArrayStoreException
486		*/
487		public void testToArray1_BadArg() {
488	+	LinkedTransferQueue q = populatedQueue(SIZE);
489		try {
490	<	LinkedTransferQueue q = populatedQueue(SIZE);
612	<	Object o[] = q.toArray(new String[10]);
490	>	q.toArray(new String[10]);
491		shouldThrow();
492	<	} catch (ArrayStoreException success) {
615	<	}
492	>	} catch (ArrayStoreException success) {}
493		}
494
495		/**
496		* iterator iterates through all elements
497		*/
498	<	public void testIterator() {
498	>	public void testIterator() throws InterruptedException {
499		LinkedTransferQueue q = populatedQueue(SIZE);
500		Iterator it = q.iterator();
501	<	try {
502	<	while (it.hasNext()) {
503	<	assertEquals(it.next(), q.take());
627	<	}
628	<	} catch (InterruptedException e) {
629	<	unexpectedException();
501	>	int i = 0;
502	>	while (it.hasNext()) {
503	>	assertEquals(it.next(), i++);
504		}
505	+	assertEquals(i, SIZE);
506		}
507
508		/**
509	<	* iterator.remove removes current element
509	>	* iterator.remove() removes current element
510		*/
511		public void testIteratorRemove() {
512		final LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 644 | Line 519 | public class LinkedTransferQueueTest ext
519		it.remove();
520
521		it = q.iterator();
522	<	assertEquals(it.next(), one);
523	<	assertEquals(it.next(), three);
522	>	assertSame(it.next(), one);
523	>	assertSame(it.next(), three);
524		assertFalse(it.hasNext());
525		}
526
#	Line 653 | Line 528 | public class LinkedTransferQueueTest ext
528		* iterator ordering is FIFO
529		*/
530		public void testIteratorOrdering() {
531	<	final LinkedTransferQueue q = new LinkedTransferQueue();
532	<	int remainingCapacity = q.remainingCapacity();
531	>	final LinkedTransferQueue<Integer> q
532	>	= new LinkedTransferQueue<Integer>();
533	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
534		q.add(one);
535		q.add(two);
536		q.add(three);
537	<	assertEquals(remainingCapacity, q.remainingCapacity());
537	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
538		int k = 0;
539	<	for (Iterator it = q.iterator(); it.hasNext();) {
540	<	int i = ((Integer) (it.next())).intValue();
665	<	assertEquals(++k, i);
539	>	for (Integer n : q) {
540	>	assertEquals(++k, (int) n);
541		}
542		assertEquals(3, k);
543		}
#	Line 675 | Line 550 | public class LinkedTransferQueueTest ext
550		q.add(one);
551		q.add(two);
552		q.add(three);
553	<	try {
554	<	for (Iterator it = q.iterator(); it.hasNext();) {
555	<	q.remove();
681	<	it.next();
682	<	}
683	<	} catch (ConcurrentModificationException e) {
684	<	unexpectedException();
553	>	for (Iterator it = q.iterator(); it.hasNext();) {
554	>	q.remove();
555	>	it.next();
556		}
557		assertEquals(0, q.size());
558		}
#	Line 693 | Line 564 | public class LinkedTransferQueueTest ext
564		LinkedTransferQueue q = populatedQueue(SIZE);
565		String s = q.toString();
566		for (int i = 0; i < SIZE; ++i) {
567	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
567	>	assertTrue(s.contains(String.valueOf(i)));
568		}
569		}
570
#	Line 702 | Line 573 | public class LinkedTransferQueueTest ext
573		*/
574		public void testOfferInExecutor() {
575		final LinkedTransferQueue q = new LinkedTransferQueue();
576	<	q.add(one);
706	<	q.add(two);
576	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
577		ExecutorService executor = Executors.newFixedThreadPool(2);
708	–	executor.execute(new Runnable() {
578
579	<	public void run() {
580	<	try {
581	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
582	<	} catch (Exception e) {
583	<	threadUnexpectedException();
584	<	}
585	<	}
586	<	});
587	<
588	<	executor.execute(new Runnable() {
589	<
590	<	public void run() {
722	<	try {
723	<	Thread.sleep(SMALL_DELAY_MS);
724	<	threadAssertEquals(one, q.take());
725	<	} catch (InterruptedException e) {
726	<	threadUnexpectedException();
727	<	}
728	<	}
729	<	});
579	>	executor.execute(new CheckedRunnable() {
580	>	public void realRun() throws InterruptedException {
581	>	threadsStarted.await();
582	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
583	>	}});
584	>
585	>	executor.execute(new CheckedRunnable() {
586	>	public void realRun() throws InterruptedException {
587	>	threadsStarted.await();
588	>	assertSame(one, q.take());
589	>	checkEmpty(q);
590	>	}});
591
592		joinPool(executor);
593		}
594
595		/**
596	<	* poll retrieves elements across Executor threads
596	>	* timed poll retrieves elements across Executor threads
597		*/
598		public void testPollInExecutor() {
599		final LinkedTransferQueue q = new LinkedTransferQueue();
600	+	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
601		ExecutorService executor = Executors.newFixedThreadPool(2);
740	–	executor.execute(new Runnable() {
602
603	<	public void run() {
604	<	threadAssertNull(q.poll());
605	<	try {
606	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
607	<	threadAssertTrue(q.isEmpty());
608	<	} catch (InterruptedException e) {
609	<	threadUnexpectedException();
610	<	}
611	<	}
612	<	});
613	<
614	<	executor.execute(new Runnable() {
615	<
755	<	public void run() {
756	<	try {
757	<	Thread.sleep(SMALL_DELAY_MS);
758	<	q.put(one);
759	<	} catch (InterruptedException e) {
760	<	threadUnexpectedException();
761	<	}
762	<	}
763	<	});
603	>	executor.execute(new CheckedRunnable() {
604	>	public void realRun() throws InterruptedException {
605	>	assertNull(q.poll());
606	>	threadsStarted.await();
607	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
608	>	checkEmpty(q);
609	>	}});
610	>
611	>	executor.execute(new CheckedRunnable() {
612	>	public void realRun() throws InterruptedException {
613	>	threadsStarted.await();
614	>	q.put(one);
615	>	}});
616
617		joinPool(executor);
618		}
#	Line 768 | Line 620 | public class LinkedTransferQueueTest ext
620		/**
621		* A deserialized serialized queue has same elements in same order
622		*/
623	<	public void testSerialization() {
624	<	LinkedTransferQueue q = populatedQueue(SIZE);
625	<
626	<	try {
627	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
628	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
629	<	out.writeObject(q);
630	<	out.close();
631	<
632	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
633	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
782	<	LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
783	<
784	<	assertEquals(q.size(), r.size());
785	<	while (!q.isEmpty()) {
786	<	assertEquals(q.remove(), r.remove());
787	<	}
788	<	} catch (Exception e) {
789	<	unexpectedException();
790	<	}
791	<	}
792	<
793	<	/**
794	<	* drainTo(null) throws NPE
795	<	*/
796	<	public void testDrainToNull() {
797	<	LinkedTransferQueue q = populatedQueue(SIZE);
798	<	try {
799	<	q.drainTo(null);
800	<	shouldThrow();
801	<	} catch (NullPointerException success) {
802	<	}
803	<	}
804	<
805	<	/**
806	<	* drainTo(this) throws IAE
807	<	*/
808	<	public void testDrainToSelf() {
809	<	LinkedTransferQueue q = populatedQueue(SIZE);
810	<	try {
811	<	q.drainTo(q);
812	<	shouldThrow();
813	<	} catch (IllegalArgumentException success) {
623	>	public void testSerialization() throws Exception {
624	>	Queue x = populatedQueue(SIZE);
625	>	Queue y = serialClone(x);
626	>
627	>	assertNotSame(y, x);
628	>	assertEquals(x.size(), y.size());
629	>	assertEquals(x.toString(), y.toString());
630	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
631	>	while (!x.isEmpty()) {
632	>	assertFalse(y.isEmpty());
633	>	assertEquals(x.remove(), y.remove());
634		}
635	+	assertTrue(y.isEmpty());
636		}
637
638		/**
#	Line 821 | Line 642 | public class LinkedTransferQueueTest ext
642		LinkedTransferQueue q = populatedQueue(SIZE);
643		ArrayList l = new ArrayList();
644		q.drainTo(l);
645	<	assertEquals(q.size(), 0);
646	<	assertEquals(l.size(), SIZE);
645	>	assertEquals(0, q.size());
646	>	assertEquals(SIZE, l.size());
647		for (int i = 0; i < SIZE; ++i) {
648	<	assertEquals(l.get(i), new Integer(i));
648	>	assertEquals(i, l.get(i));
649		}
650		q.add(zero);
651		q.add(one);
#	Line 833 | Line 654 | public class LinkedTransferQueueTest ext
654		assertTrue(q.contains(one));
655		l.clear();
656		q.drainTo(l);
657	<	assertEquals(q.size(), 0);
658	<	assertEquals(l.size(), 2);
657	>	assertEquals(0, q.size());
658	>	assertEquals(2, l.size());
659		for (int i = 0; i < 2; ++i) {
660	<	assertEquals(l.get(i), new Integer(i));
660	>	assertEquals(i, l.get(i));
661		}
662		}
663
664		/**
665	<	* drainTo empties full queue, unblocking a waiting put.
665	>	* drainTo(c) empties full queue, unblocking a waiting put.
666		*/
667	<	public void testDrainToWithActivePut() {
667	>	public void testDrainToWithActivePut() throws InterruptedException {
668		final LinkedTransferQueue q = populatedQueue(SIZE);
669	<	Thread t = new Thread(new Runnable() {
670	<
671	<	public void run() {
672	<	try {
673	<	q.put(new Integer(SIZE + 1));
674	<	} catch (Exception ie) {
675	<	threadUnexpectedException();
676	<	}
677	<	}
678	<	});
679	<	try {
859	<	t.start();
860	<	ArrayList l = new ArrayList();
861	<	q.drainTo(l);
862	<	assertTrue(l.size() >= SIZE);
863	<	for (int i = 0; i < SIZE; ++i) {
864	<	assertEquals(l.get(i), new Integer(i));
865	<	}
866	<	t.join();
867	<	assertTrue(q.size() + l.size() >= SIZE);
868	<	} catch (Exception e) {
869	<	unexpectedException();
870	<	}
871	<	}
872	<
873	<	/**
874	<	* drainTo(null, n) throws NPE
875	<	*/
876	<	public void testDrainToNullN() {
877	<	LinkedTransferQueue q = populatedQueue(SIZE);
878	<	try {
879	<	q.drainTo(null, 0);
880	<	shouldThrow();
881	<	} catch (NullPointerException success) {
882	<	}
883	<	}
884	<
885	<	/**
886	<	* drainTo(this, n) throws IAE
887	<	*/
888	<	public void testDrainToSelfN() {
889	<	LinkedTransferQueue q = populatedQueue(SIZE);
890	<	try {
891	<	q.drainTo(q, 0);
892	<	shouldThrow();
893	<	} catch (IllegalArgumentException success) {
894	<	}
669	>	Thread t = newStartedThread(new CheckedRunnable() {
670	>	public void realRun() {
671	>	q.put(SIZE + 1);
672	>	}});
673	>	ArrayList l = new ArrayList();
674	>	q.drainTo(l);
675	>	assertTrue(l.size() >= SIZE);
676	>	for (int i = 0; i < SIZE; ++i)
677	>	assertEquals(i, l.get(i));
678	>	awaitTermination(t, MEDIUM_DELAY_MS);
679	>	assertTrue(q.size() + l.size() >= SIZE);
680		}
681
682		/**
683	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
683	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
684		*/
685		public void testDrainToN() {
686		LinkedTransferQueue q = new LinkedTransferQueue();
687		for (int i = 0; i < SIZE + 2; ++i) {
688		for (int j = 0; j < SIZE; j++) {
689	<	assertTrue(q.offer(new Integer(j)));
689	>	assertTrue(q.offer(j));
690		}
691		ArrayList l = new ArrayList();
692		q.drainTo(l, i);
693		int k = (i < SIZE) ? i : SIZE;
694	<	assertEquals(l.size(), k);
695	<	assertEquals(q.size(), SIZE - k);
696	<	for (int j = 0; j < k; ++j) {
697	<	assertEquals(l.get(j), new Integer(j));
698	<	}
699	<	while (q.poll() != null);
694	>	assertEquals(k, l.size());
695	>	assertEquals(SIZE - k, q.size());
696	>	for (int j = 0; j < k; ++j)
697	>	assertEquals(j, l.get(j));
698	>	while (q.poll() != null)
699	>	;
700		}
701		}
702
703		/**
704	<	* poll and take should decrement the waiting consumer count
704	>	* timed poll() or take() increments the waiting consumer count;
705	>	* offer(e) decrements the waiting consumer count
706		*/
707	<	public void testWaitingConsumer() {
708	<	try {
709	<	final LinkedTransferQueue q = new LinkedTransferQueue();
710	<	final ConsumerObserver waiting = new ConsumerObserver();
711	<	new Thread(new Runnable() {
707	>	public void testWaitingConsumer() throws InterruptedException {
708	>	final LinkedTransferQueue q = new LinkedTransferQueue();
709	>	assertEquals(0, q.getWaitingConsumerCount());
710	>	assertFalse(q.hasWaitingConsumer());
711	>	final CountDownLatch threadStarted = new CountDownLatch(1);
712
713	<	public void run() {
714	<	try {
715	<	threadAssertTrue(q.hasWaitingConsumer());
716	<	waiting.setWaitingConsumer(q.getWaitingConsumerCount());
717	<	threadAssertTrue(q.offer(new Object()));
718	<	} catch (Exception ex) {
719	<	threadUnexpectedException();
934	<	}
713	>	Thread t = newStartedThread(new CheckedRunnable() {
714	>	public void realRun() throws InterruptedException {
715	>	threadStarted.countDown();
716	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
717	>	assertEquals(0, q.getWaitingConsumerCount());
718	>	assertFalse(q.hasWaitingConsumer());
719	>	}});
720
721	<	}
722	<	}).start();
723	<	assertTrue(q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS) != null);
724	<	assertTrue(q.getWaitingConsumerCount() < waiting.getWaitingConsumers());
725	<	} catch (Exception ex) {
726	<	this.unexpectedException();
727	<	}
721	>	threadStarted.await();
722	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
723	>	assertEquals(1, q.getWaitingConsumerCount());
724	>	assertTrue(q.hasWaitingConsumer());
725	>
726	>	assertTrue(q.offer(one));
727	>	assertEquals(0, q.getWaitingConsumerCount());
728	>	assertFalse(q.hasWaitingConsumer());
729	>
730	>	awaitTermination(t, MEDIUM_DELAY_MS);
731		}
732
733		/**
734	<	* Inserts null into transfer throws NPE
734	>	* transfer(null) throws NullPointerException
735		*/
736	<	public void testTransfer1() {
736	>	public void testTransfer1() throws InterruptedException {
737		try {
738		LinkedTransferQueue q = new LinkedTransferQueue();
739		q.transfer(null);
740		shouldThrow();
741	<	} catch (NullPointerException ex) {
954	<	} catch (Exception ex) {
955	<	this.unexpectedException();
956	<	}
741	>	} catch (NullPointerException success) {}
742		}
743
744		/**
745	<	* transfer attempts to insert into the queue then wait until that
746	<	* object is removed via take or poll.
745	>	* transfer waits until a poll occurs. The transfered element
746	>	* is returned by this associated poll.
747		*/
748	<	public void testTransfer2() {
749	<	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
750	<	new Thread(new Runnable() {
748	>	public void testTransfer2() throws InterruptedException {
749	>	final LinkedTransferQueue<Integer> q
750	>	= new LinkedTransferQueue<Integer>();
751	>	final CountDownLatch threadStarted = new CountDownLatch(1);
752
753	<	public void run() {
754	<	try {
755	<	q.transfer(new Integer(SIZE));
756	<	threadAssertTrue(q.isEmpty());
757	<	} catch (Exception ex) {
758	<	threadUnexpectedException();
973	<	}
974	<	}
975	<	}).start();
753	>	Thread t = newStartedThread(new CheckedRunnable() {
754	>	public void realRun() throws InterruptedException {
755	>	threadStarted.countDown();
756	>	q.transfer(five);
757	>	checkEmpty(q);
758	>	}});
759
760	<	try {
761	<	Thread.sleep(SHORT_DELAY_MS);
762	<	assertEquals(1, q.size());
763	<	q.poll();
764	<	assertTrue(q.isEmpty());
765	<	} catch (Exception ex) {
983	<	this.unexpectedException();
984	<	}
760	>	threadStarted.await();
761	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
762	>	assertEquals(1, q.size());
763	>	assertSame(five, q.poll());
764	>	checkEmpty(q);
765	>	awaitTermination(t, MEDIUM_DELAY_MS);
766		}
767
768		/**
769	<	* transfer will attempt to transfer in fifo order and continue
770	<	* waiting if the element being transfered is not polled or taken
771	<	*/
772	<	public void testTransfer3() {
773	<	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
774	<	new Thread(new Runnable() {
775	<	public void run() {
776	<	try {
777	<	Integer i;
778	<	q.transfer((i = new Integer(SIZE + 1)));
779	<	threadAssertTrue(!q.contains(i));
780	<	threadAssertEquals(1, q.size());
781	<	} catch (Exception ex) {
782	<	threadUnexpectedException();
783	<	}
784	<	}
785	<	}).start();
786	<	Thread interruptedThread =
787	<	new Thread(new Runnable() {
788	<	public void run() {
789	<	try {
790	<	q.transfer(new Integer(SIZE));
791	<	threadShouldThrow();
792	<	} catch (InterruptedException ex) {
793	<	}
794	<	}
795	<	});
796	<	interruptedThread.start();
797	<	try {
798	<	Thread.sleep(LONG_DELAY_MS);
1018	<	assertEquals(2, q.size());
1019	<	q.poll();
1020	<	Thread.sleep(LONG_DELAY_MS);
1021	<	interruptedThread.interrupt();
1022	<	assertEquals(1, q.size());
1023	<	} catch (Exception ex) {
1024	<	this.unexpectedException();
1025	<	}
769	>	* transfer waits until a poll occurs, and then transfers in fifo order
770	>	*/
771	>	public void testTransfer3() throws InterruptedException {
772	>	final LinkedTransferQueue<Integer> q
773	>	= new LinkedTransferQueue<Integer>();
774	>
775	>	Thread first = newStartedThread(new CheckedRunnable() {
776	>	public void realRun() throws InterruptedException {
777	>	q.transfer(four);
778	>	assertTrue(!q.contains(four));
779	>	assertEquals(1, q.size());
780	>	}});
781	>
782	>	Thread interruptedThread = newStartedThread(
783	>	new CheckedInterruptedRunnable() {
784	>	public void realRun() throws InterruptedException {
785	>	while (q.isEmpty())
786	>	Thread.yield();
787	>	q.transfer(five);
788	>	}});
789	>
790	>	while (q.size() < 2)
791	>	Thread.yield();
792	>	assertEquals(2, q.size());
793	>	assertSame(four, q.poll());
794	>	first.join();
795	>	assertEquals(1, q.size());
796	>	interruptedThread.interrupt();
797	>	interruptedThread.join();
798	>	checkEmpty(q);
799		}
800
801		/**
802	<	* transfer will wait as long as a poll or take occurs if one does occur
803	<	* the waiting is finished and the thread that tries to poll/take
1031	<	* wins in retrieving the element
802	>	* transfer waits until a poll occurs, at which point the polling
803	>	* thread returns the element
804		*/
805	<	public void testTransfer4() {
805	>	public void testTransfer4() throws InterruptedException {
806		final LinkedTransferQueue q = new LinkedTransferQueue();
1035	–	new Thread(new Runnable() {
807
808	<	public void run() {
809	<	try {
810	<	q.transfer(new Integer(four));
811	<	threadAssertFalse(q.contains(new Integer(four)));
812	<	threadAssertEquals(new Integer(three), q.poll());
813	<	} catch (Exception ex) {
814	<	threadUnexpectedException();
815	<	}
816	<	}
817	<	}).start();
818	<	try {
819	<	Thread.sleep(MEDIUM_DELAY_MS);
820	<	assertTrue(q.offer(three));
821	<	assertEquals(new Integer(four), q.poll());
1051	<	} catch (Exception ex) {
1052	<	this.unexpectedException();
1053	<	}
808	>	Thread t = newStartedThread(new CheckedRunnable() {
809	>	public void realRun() throws InterruptedException {
810	>	q.transfer(four);
811	>	assertFalse(q.contains(four));
812	>	assertSame(three, q.poll());
813	>	}});
814	>
815	>	while (q.isEmpty())
816	>	Thread.yield();
817	>	assertFalse(q.isEmpty());
818	>	assertEquals(1, q.size());
819	>	assertTrue(q.offer(three));
820	>	assertSame(four, q.poll());
821	>	awaitTermination(t, MEDIUM_DELAY_MS);
822		}
823
824		/**
825	<	* Insert null into tryTransfer throws NPE
825	>	* transfer waits until a take occurs. The transfered element
826	>	* is returned by this associated take.
827	>	*/
828	>	public void testTransfer5() throws InterruptedException {
829	>	final LinkedTransferQueue<Integer> q
830	>	= new LinkedTransferQueue<Integer>();
831	>
832	>	Thread t = newStartedThread(new CheckedRunnable() {
833	>	public void realRun() throws InterruptedException {
834	>	q.transfer(four);
835	>	checkEmpty(q);
836	>	}});
837	>
838	>	while (q.isEmpty())
839	>	Thread.yield();
840	>	assertFalse(q.isEmpty());
841	>	assertEquals(1, q.size());
842	>	assertSame(four, q.take());
843	>	checkEmpty(q);
844	>	awaitTermination(t, MEDIUM_DELAY_MS);
845	>	}
846	>
847	>	/**
848	>	* tryTransfer(null) throws NullPointerException
849		*/
850		public void testTryTransfer1() {
851		try {
852		final LinkedTransferQueue q = new LinkedTransferQueue();
853		q.tryTransfer(null);
854	<	this.shouldThrow();
855	<	} catch (NullPointerException ex) {
1065	<	} catch (Exception ex) {
1066	<	this.unexpectedException();
1067	<	}
854	>	shouldThrow();
855	>	} catch (NullPointerException success) {}
856		}
857
858		/**
859	<	* tryTransfer returns false and does not enqueue if there are no consumers
860	<	* waiting to poll or take.
859	>	* tryTransfer returns false and does not enqueue if there are no
860	>	* consumers waiting to poll or take.
861		*/
862	<	public void testTryTransfer2() {
863	<	try {
864	<	final LinkedTransferQueue q = new LinkedTransferQueue();
865	<	assertFalse(q.tryTransfer(new Object()));
866	<	assertEquals(0, q.size());
1079	<	} catch (Exception ex) {
1080	<	this.unexpectedException();
1081	<	}
862	>	public void testTryTransfer2() throws InterruptedException {
863	>	final LinkedTransferQueue q = new LinkedTransferQueue();
864	>	assertFalse(q.tryTransfer(new Object()));
865	>	assertFalse(q.hasWaitingConsumer());
866	>	checkEmpty(q);
867		}
868
869		/**
870	<	* if there is a consumer waiting poll or take tryTransfer returns
871	<	* true while enqueueing object
870	>	* If there is a consumer waiting in timed poll, tryTransfer
871	>	* returns true while successfully transfering object.
872		*/
873	<	public void testTryTransfer3() {
874	<	try {
875	<	final LinkedTransferQueue q = new LinkedTransferQueue();
1091	<	new Thread(new Runnable() {
873	>	public void testTryTransfer3() throws InterruptedException {
874	>	final Object hotPotato = new Object();
875	>	final LinkedTransferQueue q = new LinkedTransferQueue();
876
877	<	public void run() {
878	<	try {
879	<	threadAssertTrue(q.hasWaitingConsumer());
880	<	threadAssertTrue(q.tryTransfer(new Object()));
881	<	} catch (Exception ex) {
882	<	threadUnexpectedException();
883	<	}
877	>	Thread t = newStartedThread(new CheckedRunnable() {
878	>	public void realRun() {
879	>	while (! q.hasWaitingConsumer())
880	>	Thread.yield();
881	>	assertTrue(q.hasWaitingConsumer());
882	>	checkEmpty(q);
883	>	assertTrue(q.tryTransfer(hotPotato));
884	>	}});
885	>
886	>	assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
887	>	checkEmpty(q);
888	>	awaitTermination(t, MEDIUM_DELAY_MS);
889	>	}
890
891	<	}
892	<	}).start();
893	<	assertTrue(q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS) != null);
894	<	assertTrue(q.isEmpty());
895	<	} catch (Exception ex) {
896	<	this.unexpectedException();
897	<	}
891	>	/**
892	>	* If there is a consumer waiting in take, tryTransfer returns
893	>	* true while successfully transfering object.
894	>	*/
895	>	public void testTryTransfer4() throws InterruptedException {
896	>	final Object hotPotato = new Object();
897	>	final LinkedTransferQueue q = new LinkedTransferQueue();
898	>
899	>	Thread t = newStartedThread(new CheckedRunnable() {
900	>	public void realRun() {
901	>	while (! q.hasWaitingConsumer())
902	>	Thread.yield();
903	>	assertTrue(q.hasWaitingConsumer());
904	>	checkEmpty(q);
905	>	assertTrue(q.tryTransfer(hotPotato));
906	>	}});
907	>
908	>	assertSame(q.take(), hotPotato);
909	>	checkEmpty(q);
910	>	awaitTermination(t, MEDIUM_DELAY_MS);
911		}
912
913		/**
914	<	* tryTransfer waits the amount given if interrupted, show an
1112	<	* interrupted exception
914	>	* tryTransfer blocks interruptibly if no takers
915		*/
916	<	public void testTryTransfer4() {
916	>	public void testTryTransfer5() throws InterruptedException {
917		final LinkedTransferQueue q = new LinkedTransferQueue();
918	<	Thread toInterrupt = new Thread(new Runnable() {
918	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
919	>	assertTrue(q.isEmpty());
920
921	<	public void run() {
921	>	Thread t = newStartedThread(new CheckedRunnable() {
922	>	public void realRun() throws InterruptedException {
923	>	Thread.currentThread().interrupt();
924		try {
925	<	q.tryTransfer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS);
926	<	threadShouldThrow();
927	<	} catch (InterruptedException ex) {
928	<	}
929	<	}
930	<	});
931	<	try {
932	<	toInterrupt.start();
933	<	Thread.sleep(SMALL_DELAY_MS);
934	<	toInterrupt.interrupt();
935	<	} catch (Exception ex) {
936	<	this.unexpectedException();
937	<	}
925	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
926	>	shouldThrow();
927	>	} catch (InterruptedException success) {}
928	>	assertFalse(Thread.interrupted());
929	>
930	>	pleaseInterrupt.countDown();
931	>	try {
932	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
933	>	shouldThrow();
934	>	} catch (InterruptedException success) {}
935	>	assertFalse(Thread.interrupted());
936	>	}});
937	>
938	>	await(pleaseInterrupt);
939	>	assertThreadStaysAlive(t);
940	>	t.interrupt();
941	>	awaitTermination(t);
942	>	checkEmpty(q);
943		}
944
945		/**
946	<	* tryTransfer gives up after the timeout and return false
946	>	* tryTransfer gives up after the timeout and returns false
947		*/
948	<	public void testTryTransfer5() {
948	>	public void testTryTransfer6() throws InterruptedException {
949		final LinkedTransferQueue q = new LinkedTransferQueue();
1140	–	try {
1141	–	new Thread(new Runnable() {
950
951	<	public void run() {
952	<	try {
953	<	threadAssertFalse(q.tryTransfer(new Object(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
954	<	} catch (InterruptedException ex) {
955	<	threadUnexpectedException();
956	<	}
957	<	}
958	<	}).start();
959	<	Thread.sleep(LONG_DELAY_MS);
960	<	assertTrue(q.isEmpty());
961	<	} catch (Exception ex) {
1154	<	this.unexpectedException();
1155	<	}
951	>	Thread t = newStartedThread(new CheckedRunnable() {
952	>	public void realRun() throws InterruptedException {
953	>	long t0 = System.nanoTime();
954	>	assertFalse(q.tryTransfer(new Object(),
955	>	timeoutMillis(), MILLISECONDS));
956	>	assertTrue(millisElapsedSince(t0) >= timeoutMillis());
957	>	checkEmpty(q);
958	>	}});
959	>
960	>	awaitTermination(t);
961	>	checkEmpty(q);
962		}
963
964		/**
965		* tryTransfer waits for any elements previously in to be removed
966		* before transfering to a poll or take
967		*/
968	<	public void testTryTransfer6() {
968	>	public void testTryTransfer7() throws InterruptedException {
969		final LinkedTransferQueue q = new LinkedTransferQueue();
970	<	q.offer(new Integer(four));
1165	<	new Thread(new Runnable() {
970	>	assertTrue(q.offer(four));
971
972	<	public void run() {
973	<	try {
974	<	threadAssertTrue(q.tryTransfer(new Integer(five), LONG_DELAY_MS, TimeUnit.MILLISECONDS));
975	<	threadAssertTrue(q.isEmpty());
976	<	} catch (InterruptedException ex) {
977	<	threadUnexpectedException();
978	<	}
979	<	}
980	<	}).start();
981	<	try {
982	<	Thread.sleep(SHORT_DELAY_MS);
983	<	assertEquals(2, q.size());
984	<	assertEquals(new Integer(four), q.poll());
1180	<	assertEquals(new Integer(five), q.poll());
1181	<	assertTrue(q.isEmpty());
1182	<	} catch (Exception ex) {
1183	<	this.unexpectedException();
1184	<	}
972	>	Thread t = newStartedThread(new CheckedRunnable() {
973	>	public void realRun() throws InterruptedException {
974	>	assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
975	>	checkEmpty(q);
976	>	}});
977	>
978	>	while (q.size() != 2)
979	>	Thread.yield();
980	>	assertEquals(2, q.size());
981	>	assertSame(four, q.poll());
982	>	assertSame(five, q.poll());
983	>	checkEmpty(q);
984	>	awaitTermination(t, MEDIUM_DELAY_MS);
985		}
986
987		/**
988	<	* tryTransfer attempts to enqueue into the q and fails returning false not
989	<	* enqueueing and the successive poll is null
988	>	* tryTransfer attempts to enqueue into the queue and fails
989	>	* returning false not enqueueing and the successive poll is null
990		*/
991	<	public void testTryTransfer7() {
991	>	public void testTryTransfer8() throws InterruptedException {
992		final LinkedTransferQueue q = new LinkedTransferQueue();
993	<	q.offer(new Integer(four));
994	<	new Thread(new Runnable() {
995	<
996	<	public void run() {
997	<	try {
998	<	threadAssertFalse(q.tryTransfer(new Integer(five), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
999	<	threadAssertTrue(q.isEmpty());
1000	<	} catch (InterruptedException ex) {
1001	<	threadUnexpectedException();
1202	<	}
1203	<	}
1204	<	}).start();
1205	<	try {
1206	<	assertEquals(1, q.size());
1207	<	assertEquals(new Integer(four), q.poll());
1208	<	Thread.sleep(MEDIUM_DELAY_MS);
1209	<	assertNull(q.poll());
1210	<	} catch (Exception ex) {
1211	<	this.unexpectedException();
1212	<	}
993	>	assertTrue(q.offer(four));
994	>	assertEquals(1, q.size());
995	>	long t0 = System.nanoTime();
996	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
997	>	assertTrue(millisElapsedSince(t0) >= timeoutMillis());
998	>	assertEquals(1, q.size());
999	>	assertSame(four, q.poll());
1000	>	assertNull(q.poll());
1001	>	checkEmpty(q);
1002		}
1003
1004	<	private LinkedTransferQueue populatedQueue(
1005	<	int n) {
1006	<	LinkedTransferQueue q = new LinkedTransferQueue();
1007	<	assertTrue(q.isEmpty());
1008	<	int remainingCapacity = q.remainingCapacity();
1220	<	for (int i = 0; i <
1221	<	n; i++) {
1004	>	private LinkedTransferQueue<Integer> populatedQueue(int n) {
1005	>	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1006	>	checkEmpty(q);
1007	>	for (int i = 0; i < n; i++) {
1008	>	assertEquals(i, q.size());
1009		assertTrue(q.offer(i));
1010	+	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
1011		}
1224	–
1012		assertFalse(q.isEmpty());
1226	–	assertEquals(remainingCapacity, q.remainingCapacity());
1227	–	assertEquals(n, q.size());
1013		return q;
1014		}
1015
1016	<	private static class ConsumerObserver {
1017	<
1018	<	private int waitingConsumers;
1019	<
1020	<	private ConsumerObserver() {
1021	<	}
1022	<
1023	<	private void setWaitingConsumer(int i) {
1024	<	this.waitingConsumers = i;
1025	<	}
1026	<
1027	<	private int getWaitingConsumers() {
1243	<	return waitingConsumers;
1016	>	/**
1017	>	* remove(null), contains(null) always return false
1018	>	*/
1019	>	public void testNeverContainsNull() {
1020	>	Collection<?>[] qs = {
1021	>	new LinkedTransferQueue<Object>(),
1022	>	populatedQueue(2),
1023	>	};
1024	>
1025	>	for (Collection<?> q : qs) {
1026	>	assertFalse(q.contains(null));
1027	>	assertFalse(q.remove(null));
1028		}
1029		}
1030		}

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