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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.1 by dl, Fri Jul 31 23:02:49 2009 UTC vs.
Revision 1.38 by jsr166, Thu Nov 4 01:04:54 2010 UTC

#	Line 1 | Line 1
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
#	Line 14 | Line 13 | import java.io.ObjectInputStream;
13		import java.io.ObjectOutputStream;
14		import java.util.ArrayList;
15		import java.util.Arrays;
17	–	import java.util.ConcurrentModificationException;
16		import java.util.Iterator;
17	+	import java.util.List;
18		import java.util.NoSuchElementException;
19		import java.util.concurrent.*;
20	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
21	+	import static java.util.concurrent.TimeUnit.NANOSECONDS;
22		import junit.framework.Test;
23		import junit.framework.TestSuite;
24
25	+	@SuppressWarnings({"unchecked", "rawtypes"})
26		public class LinkedTransferQueueTest extends JSR166TestCase {
27
28	+	public static class Generic extends BlockingQueueTest {
29	+	protected BlockingQueue emptyCollection() {
30	+	return new LinkedTransferQueue();
31	+	}
32	+	}
33	+
34		public static void main(String[] args) {
35		junit.textui.TestRunner.run(suite());
36		}
37
38		public static Test suite() {
39	<	return new TestSuite(LinkedTransferQueueTest.class);
39	>	return newTestSuite(LinkedTransferQueueTest.class,
40	>	new Generic().testSuite());
41	>	}
42	>
43	>	void checkEmpty(BlockingQueue q) {
44	>	try {
45	>	assertTrue(q.isEmpty());
46	>	assertEquals(0, q.size());
47	>	assertNull(q.peek());
48	>	assertNull(q.poll());
49	>	assertNull(q.poll(0, MILLISECONDS));
50	>	assertEquals(q.toString(), "[]");
51	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
52	>	assertFalse(q.iterator().hasNext());
53	>	try {
54	>	q.element();
55	>	shouldThrow();
56	>	} catch (NoSuchElementException success) {}
57	>	try {
58	>	q.iterator().next();
59	>	shouldThrow();
60	>	} catch (NoSuchElementException success) {}
61	>	try {
62	>	q.remove();
63	>	shouldThrow();
64	>	} catch (NoSuchElementException success) {}
65	>	} catch (InterruptedException ie) {
66	>	threadUnexpectedException(ie);
67	>	}
68		}
69
70	<	/*
71	<	*Constructor builds new queue with size being zero and empty being true
70	>	/**
71	>	* Constructor builds new queue with size being zero and empty
72	>	* being true
73		*/
74		public void testConstructor1() {
75		assertEquals(0, new LinkedTransferQueue().size());
76		assertTrue(new LinkedTransferQueue().isEmpty());
77		}
78
79	<	/*
80	<	* Initizialing constructor with null collection throws NPE
79	>	/**
80	>	* Initializing constructor with null collection throws
81	>	* NullPointerException
82		*/
83		public void testConstructor2() {
84		try {
85		new LinkedTransferQueue(null);
86		shouldThrow();
87	<	} catch (NullPointerException success) {
50	<	}
87	>	} catch (NullPointerException success) {}
88		}
89
90		/**
91	<	* Initializing from Collection of null elements throws NPE
91	>	* Initializing from Collection of null elements throws
92	>	* NullPointerException
93		*/
94		public void testConstructor3() {
95		try {
96		Integer[] ints = new Integer[SIZE];
97	<	LinkedTransferQueue q = new LinkedTransferQueue(Arrays.asList(ints));
97	>	new LinkedTransferQueue(Arrays.asList(ints));
98		shouldThrow();
99	<	} catch (NullPointerException success) {
62	<	}
99	>	} catch (NullPointerException success) {}
100		}
101	<	/*
101	>
102	>	/**
103		* Initializing constructor with a collection containing some null elements
104	<	* throws NPE
104	>	* throws NullPointerException
105		*/
68	–
106		public void testConstructor4() {
107		try {
108		Integer[] ints = new Integer[SIZE];
109		for (int i = 0; i < SIZE - 1; ++i) {
110	<	ints[i] = new Integer(i);
110	>	ints[i] = i;
111		}
112	<	LinkedTransferQueue q = new LinkedTransferQueue(Arrays.asList(ints));
112	>	new LinkedTransferQueue(Arrays.asList(ints));
113		shouldThrow();
114	<	} catch (NullPointerException success) {
78	<	}
114	>	} catch (NullPointerException success) {}
115		}
116
117	<	/*
117	>	/**
118		* Queue contains all elements of the collection it is initialized by
119		*/
120		public void testConstructor5() {
121	<	try {
122	<	Integer[] ints = new Integer[SIZE];
123	<	for (int i = 0; i < SIZE; ++i) {
124	<	ints[i] = new Integer(i);
125	<	}
126	<	LinkedTransferQueue q = new LinkedTransferQueue(Arrays.asList(ints));
127	<	for (int i = 0; i < SIZE; ++i) {
128	<	assertEquals(ints[i], q.poll());
129	<	}
130	<	} finally {
121	>	Integer[] ints = new Integer[SIZE];
122	>	for (int i = 0; i < SIZE; ++i) {
123	>	ints[i] = i;
124	>	}
125	>	List intList = Arrays.asList(ints);
126	>	LinkedTransferQueue q
127	>	= new LinkedTransferQueue(intList);
128	>	assertEquals(q.size(), intList.size());
129	>	assertEquals(q.toString(), intList.toString());
130	>	assertTrue(Arrays.equals(q.toArray(),
131	>	intList.toArray()));
132	>	assertTrue(Arrays.equals(q.toArray(new Object[0]),
133	>	intList.toArray(new Object[0])));
134	>	assertTrue(Arrays.equals(q.toArray(new Object[SIZE]),
135	>	intList.toArray(new Object[SIZE])));
136	>	for (int i = 0; i < SIZE; ++i) {
137	>	assertEquals(ints[i], q.poll());
138		}
139		}
140
141		/**
142	<	* Remaining capacity never decrease nor increase on add or remove
142	>	* remainingCapacity() always returns Integer.MAX_VALUE
143		*/
144		public void testRemainingCapacity() {
145	<	LinkedTransferQueue q = populatedQueue(SIZE);
103	<	int remainingCapacity = q.remainingCapacity();
145	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
146		for (int i = 0; i < SIZE; ++i) {
147	<	assertEquals(remainingCapacity, q.remainingCapacity());
147	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
148		assertEquals(SIZE - i, q.size());
149		q.remove();
150		}
151		for (int i = 0; i < SIZE; ++i) {
152	<	assertEquals(remainingCapacity, q.remainingCapacity());
152	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
153		assertEquals(i, q.size());
154	<	q.add(new Integer(i));
154	>	q.add(i);
155		}
156		}
157
158		/**
159	<	* offer(null) throws NPE
159	>	* offer(null) throws NullPointerException
160		*/
161		public void testOfferNull() {
162		try {
163		LinkedTransferQueue q = new LinkedTransferQueue();
164		q.offer(null);
165		shouldThrow();
166	<	} catch (NullPointerException success) {
125	<	}
166	>	} catch (NullPointerException success) {}
167		}
168
169		/**
170	<	* add(null) throws NPE
170	>	* add(null) throws NullPointerException
171		*/
172		public void testAddNull() {
173		try {
174		LinkedTransferQueue q = new LinkedTransferQueue();
175		q.add(null);
176		shouldThrow();
177	<	} catch (NullPointerException success) {
137	<	}
177	>	} catch (NullPointerException success) {}
178		}
179
180		/**
181	<	* addAll(null) throws NPE
181	>	* addAll(null) throws NullPointerException
182		*/
183		public void testAddAll1() {
184		try {
185		LinkedTransferQueue q = new LinkedTransferQueue();
186		q.addAll(null);
187		shouldThrow();
188	<	} catch (NullPointerException success) {
149	<	}
188	>	} catch (NullPointerException success) {}
189		}
190
191		/**
192	<	* addAll(this) throws IAE
192	>	* addAll(this) throws IllegalArgumentException
193		*/
194		public void testAddAllSelf() {
195		try {
196		LinkedTransferQueue q = populatedQueue(SIZE);
197		q.addAll(q);
198		shouldThrow();
199	<	} catch (IllegalArgumentException success) {
161	<	}
199	>	} catch (IllegalArgumentException success) {}
200		}
201
202		/**
203	<	* addAll of a collection with null elements throws NPE
203	>	* addAll of a collection with null elements throws NullPointerException
204		*/
205		public void testAddAll2() {
206		try {
#	Line 170 | Line 208 | public class LinkedTransferQueueTest ext
208		Integer[] ints = new Integer[SIZE];
209		q.addAll(Arrays.asList(ints));
210		shouldThrow();
211	<	} catch (NullPointerException success) {
174	<	}
211	>	} catch (NullPointerException success) {}
212		}
213
214		/**
215	<	* addAll of a collection with any null elements throws NPE after
216	<	* possibly adding some elements
215	>	* addAll of a collection with any null elements throws
216	>	* NullPointerException after possibly adding some elements
217		*/
218		public void testAddAll3() {
219		try {
220		LinkedTransferQueue q = new LinkedTransferQueue();
221		Integer[] ints = new Integer[SIZE];
222		for (int i = 0; i < SIZE - 1; ++i) {
223	<	ints[i] = new Integer(i);
223	>	ints[i] = i;
224		}
225		q.addAll(Arrays.asList(ints));
226		shouldThrow();
227	<	} catch (NullPointerException success) {
191	<	}
227	>	} catch (NullPointerException success) {}
228		}
229
230		/**
231		* Queue contains all elements, in traversal order, of successful addAll
232		*/
233		public void testAddAll5() {
234	<	try {
235	<	Integer[] empty = new Integer[0];
236	<	Integer[] ints = new Integer[SIZE];
237	<	for (int i = 0; i < SIZE; ++i) {
238	<	ints[i] = new Integer(i);
239	<	}
240	<	LinkedTransferQueue q = new LinkedTransferQueue();
241	<	assertFalse(q.addAll(Arrays.asList(empty)));
242	<	assertTrue(q.addAll(Arrays.asList(ints)));
243	<	for (int i = 0; i < SIZE; ++i) {
208	<	assertEquals(ints[i], q.poll());
209	<	}
210	<	} finally {
234	>	Integer[] empty = new Integer[0];
235	>	Integer[] ints = new Integer[SIZE];
236	>	for (int i = 0; i < SIZE; ++i) {
237	>	ints[i] = i;
238	>	}
239	>	LinkedTransferQueue q = new LinkedTransferQueue();
240	>	assertFalse(q.addAll(Arrays.asList(empty)));
241	>	assertTrue(q.addAll(Arrays.asList(ints)));
242	>	for (int i = 0; i < SIZE; ++i) {
243	>	assertEquals(ints[i], q.poll());
244		}
245		}
246
247		/**
248	<	* put(null) throws NPE
248	>	* put(null) throws NullPointerException
249		*/
250	<	public void testPutNull() {
250	>	public void testPutNull() throws InterruptedException {
251		try {
252		LinkedTransferQueue q = new LinkedTransferQueue();
253		q.put(null);
254		shouldThrow();
255	<	} catch (NullPointerException success) {
223	<	} catch (Exception ie) {
224	<	unexpectedException();
225	<	}
255	>	} catch (NullPointerException success) {}
256		}
257
258		/**
259		* all elements successfully put are contained
260		*/
261		public void testPut() {
262	<	try {
263	<	LinkedTransferQueue q = new LinkedTransferQueue();
264	<	for (int i = 0; i < SIZE; ++i) {
265	<	Integer I = new Integer(i);
266	<	q.put(I);
237	<	assertTrue(q.contains(I));
238	<	}
239	<	} catch (Exception ie) {
240	<	unexpectedException();
262	>	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
263	>	for (int i = 0; i < SIZE; ++i) {
264	>	assertEquals(q.size(), i);
265	>	q.put(i);
266	>	assertTrue(q.contains(i));
267		}
268		}
269
270		/**
271		* take retrieves elements in FIFO order
272		*/
273	<	public void testTake() {
274	<	try {
275	<	LinkedTransferQueue q = populatedQueue(SIZE);
276	<	for (int i = 0; i < SIZE; ++i) {
251	<	assertEquals(i, ((Integer) q.take()).intValue());
252	<	}
253	<	} catch (InterruptedException e) {
254	<	unexpectedException();
273	>	public void testTake() throws InterruptedException {
274	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
275	>	for (int i = 0; i < SIZE; ++i) {
276	>	assertEquals(i, (int) q.take());
277		}
278		}
279
280		/**
281	<	* take blocks interruptibly when empty
281	>	* take removes existing elements until empty, then blocks interruptibly
282		*/
283	<	public void testTakeFromEmpty() {
284	<	final LinkedTransferQueue q = new LinkedTransferQueue();
285	<	Thread t = new Thread(new Runnable() {
286	<
287	<	public void run() {
288	<	try {
289	<	q.take();
268	<	threadShouldThrow();
269	<	} catch (InterruptedException success) {
283	>	public void testBlockingTake() throws InterruptedException {
284	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
285	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
286	>	Thread t = newStartedThread(new CheckedRunnable() {
287	>	public void realRun() throws InterruptedException {
288	>	for (int i = 0; i < SIZE; ++i) {
289	>	assertEquals(i, (int) q.take());
290		}
291	<	}
272	<	});
273	<	try {
274	<	t.start();
275	<	Thread.sleep(SHORT_DELAY_MS);
276	<	t.interrupt();
277	<	t.join();
278	<	} catch (Exception e) {
279	<	unexpectedException();
280	<	}
281	<	}
282	<	/*
283	<	* Take removes existing elements until empty, then blocks interruptibly
284	<	*/
285	<
286	<	public void testBlockingTake() {
287	<	Thread t = new Thread(new Runnable() {
288	<
289	<	public void run() {
291	>	aboutToWait.countDown();
292		try {
291	–	LinkedTransferQueue q = populatedQueue(SIZE);
292	–	for (int i = 0; i < SIZE; ++i) {
293	–	assertEquals(i, ((Integer) q.take()).intValue());
294	–	}
293		q.take();
294	<	threadShouldThrow();
295	<	} catch (InterruptedException success) {
296	<	}
297	<	}
298	<	});
299	<	t.start();
300	<	try {
301	<	Thread.sleep(SHORT_DELAY_MS);
302	<	t.interrupt();
305	<	t.join();
306	<	} catch (InterruptedException ie) {
307	<	unexpectedException();
308	<	}
294	>	shouldThrow();
295	>	} catch (InterruptedException success) {}
296	>	}});
297	>
298	>	aboutToWait.await();
299	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
300	>	t.interrupt();
301	>	awaitTermination(t, MEDIUM_DELAY_MS);
302	>	checkEmpty(q);
303		}
304
305		/**
306		* poll succeeds unless empty
307		*/
308	<	public void testPoll() {
309	<	LinkedTransferQueue q = populatedQueue(SIZE);
308	>	public void testPoll() throws InterruptedException {
309	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
310		for (int i = 0; i < SIZE; ++i) {
311	<	assertEquals(i, ((Integer) q.poll()).intValue());
311	>	assertEquals(i, (int) q.poll());
312		}
313		assertNull(q.poll());
314	+	checkEmpty(q);
315		}
316
317		/**
318	<	* timed pool with zero timeout succeeds when non-empty, else times out
318	>	* timed poll with zero timeout succeeds when non-empty, else times out
319		*/
320	<	public void testTimedPoll0() {
321	<	try {
322	<	LinkedTransferQueue q = populatedQueue(SIZE);
323	<	for (int i = 0; i < SIZE; ++i) {
329	<	assertEquals(i, ((Integer) q.poll(0, TimeUnit.MILLISECONDS)).intValue());
330	<	}
331	<	assertNull(q.poll(0, TimeUnit.MILLISECONDS));
332	<	} catch (InterruptedException e) {
333	<	unexpectedException();
320	>	public void testTimedPoll0() throws InterruptedException {
321	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
322	>	for (int i = 0; i < SIZE; ++i) {
323	>	assertEquals(i, (int) q.poll(0, MILLISECONDS));
324		}
325	+	assertNull(q.poll(0, MILLISECONDS));
326	+	checkEmpty(q);
327		}
328
329		/**
330	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
330	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
331		*/
332	<	public void testTimedPoll() {
333	<	try {
334	<	LinkedTransferQueue q = populatedQueue(SIZE);
335	<	for (int i = 0; i < SIZE; ++i) {
336	<	assertEquals(i, ((Integer) q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
337	<	}
338	<	assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
339	<	} catch (InterruptedException e) {
340	<	unexpectedException();
341	<	}
332	>	public void testTimedPoll() throws InterruptedException {
333	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
334	>	for (int i = 0; i < SIZE; ++i) {
335	>	long t0 = System.nanoTime();
336	>	assertEquals(i, (int) q.poll(SMALL_DELAY_MS, MILLISECONDS));
337	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
338	>	}
339	>	long t0 = System.nanoTime();
340	>	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
341	>	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
342	>	checkEmpty(q);
343		}
344
345		/**
346		* Interrupted timed poll throws InterruptedException instead of
347		* returning timeout status
348		*/
349	<	public void testInterruptedTimedPoll() {
350	<	Thread t = new Thread(new Runnable() {
351	<
352	<	public void run() {
349	>	public void testInterruptedTimedPoll() throws InterruptedException {
350	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
351	>	final CountDownLatch aboutToWait = new CountDownLatch(1);
352	>	Thread t = newStartedThread(new CheckedRunnable() {
353	>	public void realRun() throws InterruptedException {
354	>	for (int i = 0; i < SIZE; ++i) {
355	>	long t0 = System.nanoTime();
356	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
357	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
358	>	}
359	>	long t0 = System.nanoTime();
360	>	aboutToWait.countDown();
361		try {
362	<	LinkedTransferQueue q = populatedQueue(SIZE);
363	<	for (int i = 0; i < SIZE; ++i) {
363	<	threadAssertEquals(i, ((Integer) q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
364	<	}
365	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
362	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
363	>	shouldThrow();
364		} catch (InterruptedException success) {
365	+	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
366		}
367	<	}
368	<	});
369	<	t.start();
370	<	try {
371	<	Thread.sleep(SHORT_DELAY_MS);
372	<	t.interrupt();
373	<	t.join();
375	<	} catch (InterruptedException ie) {
376	<	unexpectedException();
377	<	}
367	>	}});
368	>
369	>	aboutToWait.await();
370	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
371	>	t.interrupt();
372	>	awaitTermination(t, MEDIUM_DELAY_MS);
373	>	checkEmpty(q);
374		}
375
376		/**
377	<	*  timed poll before a delayed offer fails; after offer succeeds;
378	<	*  on interruption throws
379	<	*/
380	<	public void testTimedPollWithOffer() {
381	<	final LinkedTransferQueue q = new LinkedTransferQueue();
382	<	Thread t = new Thread(new Runnable() {
383	<
384	<	public void run() {
385	<	try {
386	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
387	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
388	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
393	<	threadShouldThrow();
394	<	} catch (InterruptedException success) {
377	>	* timed poll after thread interrupted throws InterruptedException
378	>	* instead of returning timeout status
379	>	*/
380	>	public void testTimedPollAfterInterrupt() throws InterruptedException {
381	>	final BlockingQueue<Integer> q = populatedQueue(SIZE);
382	>	Thread t = newStartedThread(new CheckedRunnable() {
383	>	public void realRun() throws InterruptedException {
384	>	Thread.currentThread().interrupt();
385	>	for (int i = 0; i < SIZE; ++i) {
386	>	long t0 = System.nanoTime();
387	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
388	>	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
389		}
390	<	}
391	<	});
392	<	try {
393	<	t.start();
394	<	Thread.sleep(SMALL_DELAY_MS);
395	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
396	<	t.interrupt();
397	<	t.join();
404	<	} catch (Exception e) {
405	<	unexpectedException();
406	<	}
390	>	try {
391	>	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
392	>	shouldThrow();
393	>	} catch (InterruptedException success) {}
394	>	}});
395	>
396	>	awaitTermination(t, MEDIUM_DELAY_MS);
397	>	checkEmpty(q);
398		}
399
400		/**
401		* peek returns next element, or null if empty
402		*/
403	<	public void testPeek() {
404	<	LinkedTransferQueue q = populatedQueue(SIZE);
403	>	public void testPeek() throws InterruptedException {
404	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
405		for (int i = 0; i < SIZE; ++i) {
406	<	assertEquals(i, ((Integer) q.peek()).intValue());
407	<	q.poll();
406	>	assertEquals(i, (int) q.peek());
407	>	assertEquals(i, (int) q.poll());
408		assertTrue(q.peek() == null ||
409	<	i != ((Integer) q.peek()).intValue());
409	>	i != (int) q.peek());
410		}
411		assertNull(q.peek());
412	+	checkEmpty(q);
413		}
414
415		/**
416	<	* element returns next element, or throws NSEE if empty
416	>	* element returns next element, or throws NoSuchElementException if empty
417		*/
418	<	public void testElement() {
419	<	LinkedTransferQueue q = populatedQueue(SIZE);
418	>	public void testElement() throws InterruptedException {
419	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
420		for (int i = 0; i < SIZE; ++i) {
421	<	assertEquals(i, ((Integer) q.element()).intValue());
422	<	q.poll();
421	>	assertEquals(i, (int) q.element());
422	>	assertEquals(i, (int) q.poll());
423		}
424		try {
425		q.element();
426		shouldThrow();
427	<	} catch (NoSuchElementException success) {
428	<	}
427	>	} catch (NoSuchElementException success) {}
428	>	checkEmpty(q);
429		}
430
431		/**
432	<	* remove removes next element, or throws NSEE if empty
432	>	* remove removes next element, or throws NoSuchElementException if empty
433		*/
434	<	public void testRemove() {
435	<	LinkedTransferQueue q = populatedQueue(SIZE);
434	>	public void testRemove() throws InterruptedException {
435	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
436		for (int i = 0; i < SIZE; ++i) {
437	<	assertEquals(i, ((Integer) q.remove()).intValue());
437	>	assertEquals(i, (int) q.remove());
438		}
439		try {
440		q.remove();
441		shouldThrow();
442	<	} catch (NoSuchElementException success) {
443	<	}
442	>	} catch (NoSuchElementException success) {}
443	>	checkEmpty(q);
444		}
445
446		/**
447		* remove(x) removes x and returns true if present
448		*/
449	<	public void testRemoveElement() {
449	>	public void testRemoveElement() throws InterruptedException {
450		LinkedTransferQueue q = populatedQueue(SIZE);
451		for (int i = 1; i < SIZE; i += 2) {
452	<	assertTrue(q.remove(new Integer(i)));
452	>	assertTrue(q.remove(i));
453		}
454		for (int i = 0; i < SIZE; i += 2) {
455	<	assertTrue(q.remove(new Integer(i)));
456	<	assertFalse(q.remove(new Integer(i + 1)));
455	>	assertTrue(q.remove(i));
456	>	assertFalse(q.remove(i + 1));
457		}
458	<	assertTrue(q.isEmpty());
458	>	checkEmpty(q);
459		}
460
461		/**
462		* An add following remove(x) succeeds
463		*/
464	<	public void testRemoveElementAndAdd() {
465	<	try {
466	<	LinkedTransferQueue q = new LinkedTransferQueue();
467	<	assertTrue(q.add(new Integer(1)));
468	<	assertTrue(q.add(new Integer(2)));
469	<	assertTrue(q.remove(new Integer(1)));
470	<	assertTrue(q.remove(new Integer(2)));
471	<	assertTrue(q.add(new Integer(3)));
480	<	assertTrue(q.take() != null);
481	<	} catch (Exception e) {
482	<	unexpectedException();
483	<	}
464	>	public void testRemoveElementAndAdd() throws InterruptedException {
465	>	LinkedTransferQueue q = new LinkedTransferQueue();
466	>	assertTrue(q.add(one));
467	>	assertTrue(q.add(two));
468	>	assertTrue(q.remove(one));
469	>	assertTrue(q.remove(two));
470	>	assertTrue(q.add(three));
471	>	assertSame(q.take(), three);
472		}
473
474		/**
475		* contains(x) reports true when elements added but not yet removed
476		*/
477		public void testContains() {
478	<	LinkedTransferQueue q = populatedQueue(SIZE);
478	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
479		for (int i = 0; i < SIZE; ++i) {
480	<	assertTrue(q.contains(new Integer(i)));
481	<	q.poll();
482	<	assertFalse(q.contains(new Integer(i)));
480	>	assertTrue(q.contains(i));
481	>	assertEquals(i, (int) q.poll());
482	>	assertFalse(q.contains(i));
483		}
484		}
485
486		/**
487		* clear removes all elements
488		*/
489	<	public void testClear() {
489	>	public void testClear() throws InterruptedException {
490		LinkedTransferQueue q = populatedQueue(SIZE);
503	–	int remainingCapacity = q.remainingCapacity();
491		q.clear();
492	<	assertTrue(q.isEmpty());
493	<	assertEquals(0, q.size());
507	<	assertEquals(remainingCapacity, q.remainingCapacity());
492	>	checkEmpty(q);
493	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
494		q.add(one);
495		assertFalse(q.isEmpty());
496	+	assertEquals(1, q.size());
497		assertTrue(q.contains(one));
498		q.clear();
499	<	assertTrue(q.isEmpty());
499	>	checkEmpty(q);
500		}
501
502		/**
503		* containsAll(c) is true when c contains a subset of elements
504		*/
505		public void testContainsAll() {
506	<	LinkedTransferQueue q = populatedQueue(SIZE);
507	<	LinkedTransferQueue p = new LinkedTransferQueue();
506	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
507	>	LinkedTransferQueue<Integer> p = new LinkedTransferQueue<Integer>();
508		for (int i = 0; i < SIZE; ++i) {
509		assertTrue(q.containsAll(p));
510		assertFalse(p.containsAll(q));
511	<	p.add(new Integer(i));
511	>	p.add(i);
512		}
513		assertTrue(p.containsAll(q));
514		}
515
516		/**
517	<	* retainAll(c) retains only those elements of c and reports true if changed
517	>	* retainAll(c) retains only those elements of c and reports true
518	>	* if changed
519		*/
520		public void testRetainAll() {
521		LinkedTransferQueue q = populatedQueue(SIZE);
#	Line 546 | Line 534 | public class LinkedTransferQueueTest ext
534		}
535
536		/**
537	<	* removeAll(c) removes only those elements of c and reports true if changed
537	>	* removeAll(c) removes only those elements of c and reports true
538	>	* if changed
539		*/
540		public void testRemoveAll() {
541		for (int i = 1; i < SIZE; ++i) {
#	Line 555 | Line 544 | public class LinkedTransferQueueTest ext
544		assertTrue(q.removeAll(p));
545		assertEquals(SIZE - i, q.size());
546		for (int j = 0; j < i; ++j) {
547	<	Integer I = (Integer) (p.remove());
559	<	assertFalse(q.contains(I));
547	>	assertFalse(q.contains(p.remove()));
548		}
549		}
550		}
551
552		/**
553	<	* toArray contains all elements
553	>	* toArray() contains all elements in FIFO order
554		*/
555		public void testToArray() {
556		LinkedTransferQueue q = populatedQueue(SIZE);
557		Object[] o = q.toArray();
558	<	try {
559	<	for (int i = 0; i < o.length; i++) {
572	<	assertEquals(o[i], q.take());
573	<	}
574	<	} catch (InterruptedException e) {
575	<	unexpectedException();
558	>	for (int i = 0; i < o.length; i++) {
559	>	assertSame(o[i], q.poll());
560		}
561		}
562
563		/**
564	<	* toArray(a) contains all elements
564	>	* toArray(a) contains all elements in FIFO order
565		*/
566		public void testToArray2() {
567	<	LinkedTransferQueue q = populatedQueue(SIZE);
567	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
568		Integer[] ints = new Integer[SIZE];
569	<	ints = (Integer[]) q.toArray(ints);
570	<	try {
571	<	for (int i = 0; i < ints.length; i++) {
588	<	assertEquals(ints[i], q.take());
589	<	}
590	<	} catch (InterruptedException e) {
591	<	unexpectedException();
569	>	assertSame(ints, q.toArray(ints));
570	>	for (int i = 0; i < ints.length; i++) {
571	>	assertSame(ints[i], q.poll());
572		}
573		}
574
575		/**
576	<	* toArray(null) throws NPE
576	>	* toArray(null) throws NullPointerException
577		*/
578	<	public void testToArray_BadArg() {
578	>	public void testToArray_NullArg() {
579	>	LinkedTransferQueue q = populatedQueue(SIZE);
580		try {
581	<	LinkedTransferQueue q = populatedQueue(SIZE);
601	<	Object o[] = q.toArray(null);
581	>	q.toArray(null);
582		shouldThrow();
583	<	} catch (NullPointerException success) {
604	<	}
583	>	} catch (NullPointerException success) {}
584		}
585
586		/**
587	<	* toArray with incompatible array type throws CCE
587	>	* toArray(incompatible array type) throws ArrayStoreException
588		*/
589		public void testToArray1_BadArg() {
590	+	LinkedTransferQueue q = populatedQueue(SIZE);
591		try {
592	<	LinkedTransferQueue q = populatedQueue(SIZE);
613	<	Object o[] = q.toArray(new String[10]);
592	>	q.toArray(new String[10]);
593		shouldThrow();
594	<	} catch (ArrayStoreException success) {
616	<	}
594	>	} catch (ArrayStoreException success) {}
595		}
596
597		/**
598		* iterator iterates through all elements
599		*/
600	<	public void testIterator() {
600	>	public void testIterator() throws InterruptedException {
601		LinkedTransferQueue q = populatedQueue(SIZE);
602		Iterator it = q.iterator();
603	<	try {
604	<	while (it.hasNext()) {
605	<	assertEquals(it.next(), q.take());
628	<	}
629	<	} catch (InterruptedException e) {
630	<	unexpectedException();
603	>	int i = 0;
604	>	while (it.hasNext()) {
605	>	assertEquals(it.next(), i++);
606		}
607	+	assertEquals(i, SIZE);
608		}
609
610		/**
611	<	* iterator.remove removes current element
611	>	* iterator.remove() removes current element
612		*/
613		public void testIteratorRemove() {
614		final LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 645 | Line 621 | public class LinkedTransferQueueTest ext
621		it.remove();
622
623		it = q.iterator();
624	<	assertEquals(it.next(), one);
625	<	assertEquals(it.next(), three);
624	>	assertSame(it.next(), one);
625	>	assertSame(it.next(), three);
626		assertFalse(it.hasNext());
627		}
628
#	Line 654 | Line 630 | public class LinkedTransferQueueTest ext
630		* iterator ordering is FIFO
631		*/
632		public void testIteratorOrdering() {
633	<	final LinkedTransferQueue q = new LinkedTransferQueue();
634	<	int remainingCapacity = q.remainingCapacity();
633	>	final LinkedTransferQueue<Integer> q
634	>	= new LinkedTransferQueue<Integer>();
635	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
636		q.add(one);
637		q.add(two);
638		q.add(three);
639	<	assertEquals(remainingCapacity, q.remainingCapacity());
639	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
640		int k = 0;
641	<	for (Iterator it = q.iterator(); it.hasNext();) {
642	<	int i = ((Integer) (it.next())).intValue();
666	<	assertEquals(++k, i);
641	>	for (Integer n : q) {
642	>	assertEquals(++k, (int) n);
643		}
644		assertEquals(3, k);
645		}
#	Line 676 | Line 652 | public class LinkedTransferQueueTest ext
652		q.add(one);
653		q.add(two);
654		q.add(three);
655	<	try {
656	<	for (Iterator it = q.iterator(); it.hasNext();) {
657	<	q.remove();
682	<	it.next();
683	<	}
684	<	} catch (ConcurrentModificationException e) {
685	<	unexpectedException();
655	>	for (Iterator it = q.iterator(); it.hasNext();) {
656	>	q.remove();
657	>	it.next();
658		}
659		assertEquals(0, q.size());
660		}
#	Line 703 | Line 675 | public class LinkedTransferQueueTest ext
675		*/
676		public void testOfferInExecutor() {
677		final LinkedTransferQueue q = new LinkedTransferQueue();
678	<	q.add(one);
707	<	q.add(two);
678	>	final CountDownLatch threadsStarted = new CountDownLatch(2);
679		ExecutorService executor = Executors.newFixedThreadPool(2);
709	–	executor.execute(new Runnable() {
680
681	<	public void run() {
682	<	try {
683	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
684	<	} catch (Exception e) {
685	<	threadUnexpectedException();
686	<	}
687	<	}
688	<	});
689	<
690	<	executor.execute(new Runnable() {
691	<
692	<	public void run() {
693	<	try {
694	<	Thread.sleep(SMALL_DELAY_MS);
725	<	threadAssertEquals(one, q.take());
726	<	} catch (InterruptedException e) {
727	<	threadUnexpectedException();
728	<	}
729	<	}
730	<	});
681	>	executor.execute(new CheckedRunnable() {
682	>	public void realRun() throws InterruptedException {
683	>	threadsStarted.countDown();
684	>	threadsStarted.await();
685	>	assertTrue(q.offer(one, MEDIUM_DELAY_MS, MILLISECONDS));
686	>	}});
687	>
688	>	executor.execute(new CheckedRunnable() {
689	>	public void realRun() throws InterruptedException {
690	>	threadsStarted.countDown();
691	>	threadsStarted.await();
692	>	assertSame(one, q.take());
693	>	checkEmpty(q);
694	>	}});
695
696		joinPool(executor);
697		}
698
699		/**
700	<	* poll retrieves elements across Executor threads
700	>	* timed poll retrieves elements across Executor threads
701		*/
702		public void testPollInExecutor() {
703		final LinkedTransferQueue q = new LinkedTransferQueue();
704	+	final CountDownLatch threadsStarted = new CountDownLatch(2);
705		ExecutorService executor = Executors.newFixedThreadPool(2);
741	–	executor.execute(new Runnable() {
742	–
743	–	public void run() {
744	–	threadAssertNull(q.poll());
745	–	try {
746	–	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
747	–	threadAssertTrue(q.isEmpty());
748	–	} catch (InterruptedException e) {
749	–	threadUnexpectedException();
750	–	}
751	–	}
752	–	});
706
707	<	executor.execute(new Runnable() {
708	<
709	<	public void run() {
710	<	try {
711	<	Thread.sleep(SMALL_DELAY_MS);
712	<	q.put(one);
713	<	} catch (InterruptedException e) {
714	<	threadUnexpectedException();
715	<	}
716	<	}
717	<	});
707	>	executor.execute(new CheckedRunnable() {
708	>	public void realRun() throws InterruptedException {
709	>	assertNull(q.poll());
710	>	threadsStarted.countDown();
711	>	threadsStarted.await();
712	>	assertSame(one, q.poll(SMALL_DELAY_MS, MILLISECONDS));
713	>	checkEmpty(q);
714	>	}});
715	>
716	>	executor.execute(new CheckedRunnable() {
717	>	public void realRun() throws InterruptedException {
718	>	threadsStarted.countDown();
719	>	threadsStarted.await();
720	>	q.put(one);
721	>	}});
722
723		joinPool(executor);
724		}
#	Line 769 | Line 726 | public class LinkedTransferQueueTest ext
726		/**
727		* A deserialized serialized queue has same elements in same order
728		*/
729	<	public void testSerialization() {
729	>	public void testSerialization() throws Exception {
730		LinkedTransferQueue q = populatedQueue(SIZE);
731
732	<	try {
733	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
734	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
735	<	out.writeObject(q);
736	<	out.close();
737	<
738	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
739	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
740	<	LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
741	<
742	<	assertEquals(q.size(), r.size());
743	<	while (!q.isEmpty()) {
744	<	assertEquals(q.remove(), r.remove());
745	<	}
746	<	} catch (Exception e) {
747	<	unexpectedException();
732	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
733	>	ObjectOutputStream out
734	>	= new ObjectOutputStream(new BufferedOutputStream(bout));
735	>	out.writeObject(q);
736	>	out.close();
737	>
738	>	ByteArrayInputStream bin
739	>	= new ByteArrayInputStream(bout.toByteArray());
740	>	ObjectInputStream in
741	>	= new ObjectInputStream(new BufferedInputStream(bin));
742	>	LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
743	>
744	>	assertEquals(q.size(), r.size());
745	>	assertEquals(q.toString(), r.toString());
746	>	assertTrue(Arrays.equals(q.toArray(), r.toArray()));
747	>	while (!q.isEmpty()) {
748	>	assertEquals(q.remove(), r.remove());
749		}
750		}
751
752		/**
753	<	* drainTo(null) throws NPE
753	>	* drainTo(null) throws NullPointerException
754		*/
755		public void testDrainToNull() {
756		LinkedTransferQueue q = populatedQueue(SIZE);
757		try {
758		q.drainTo(null);
759		shouldThrow();
760	<	} catch (NullPointerException success) {
803	<	}
760	>	} catch (NullPointerException success) {}
761		}
762
763		/**
764	<	* drainTo(this) throws IAE
764	>	* drainTo(this) throws IllegalArgumentException
765		*/
766		public void testDrainToSelf() {
767		LinkedTransferQueue q = populatedQueue(SIZE);
768		try {
769		q.drainTo(q);
770		shouldThrow();
771	<	} catch (IllegalArgumentException success) {
815	<	}
771	>	} catch (IllegalArgumentException success) {}
772		}
773
774		/**
#	Line 825 | Line 781 | public class LinkedTransferQueueTest ext
781		assertEquals(q.size(), 0);
782		assertEquals(l.size(), SIZE);
783		for (int i = 0; i < SIZE; ++i) {
784	<	assertEquals(l.get(i), new Integer(i));
784	>	assertEquals(l.get(i), i);
785		}
786		q.add(zero);
787		q.add(one);
#	Line 837 | Line 793 | public class LinkedTransferQueueTest ext
793		assertEquals(q.size(), 0);
794		assertEquals(l.size(), 2);
795		for (int i = 0; i < 2; ++i) {
796	<	assertEquals(l.get(i), new Integer(i));
796	>	assertEquals(l.get(i), i);
797		}
798		}
799
800		/**
801	<	* drainTo empties full queue, unblocking a waiting put.
801	>	* drainTo(c) empties full queue, unblocking a waiting put.
802		*/
803	<	public void testDrainToWithActivePut() {
803	>	public void testDrainToWithActivePut() throws InterruptedException {
804		final LinkedTransferQueue q = populatedQueue(SIZE);
805	<	Thread t = new Thread(new Runnable() {
806	<
807	<	public void run() {
808	<	try {
809	<	q.put(new Integer(SIZE + 1));
810	<	} catch (Exception ie) {
811	<	threadUnexpectedException();
812	<	}
813	<	}
858	<	});
859	<	try {
860	<	t.start();
861	<	ArrayList l = new ArrayList();
862	<	q.drainTo(l);
863	<	assertTrue(l.size() >= SIZE);
864	<	for (int i = 0; i < SIZE; ++i) {
865	<	assertEquals(l.get(i), new Integer(i));
866	<	}
867	<	t.join();
868	<	assertTrue(q.size() + l.size() >= SIZE);
869	<	} catch (Exception e) {
870	<	unexpectedException();
805	>	Thread t = newStartedThread(new CheckedRunnable() {
806	>	public void realRun() {
807	>	q.put(SIZE + 1);
808	>	}});
809	>	ArrayList l = new ArrayList();
810	>	q.drainTo(l);
811	>	assertTrue(l.size() >= SIZE);
812	>	for (int i = 0; i < SIZE; ++i) {
813	>	assertEquals(l.get(i), i);
814		}
815	+	awaitTermination(t, MEDIUM_DELAY_MS);
816	+	assertTrue(q.size() + l.size() >= SIZE);
817		}
818
819		/**
820	<	* drainTo(null, n) throws NPE
820	>	* drainTo(null, n) throws NullPointerException
821		*/
822		public void testDrainToNullN() {
823		LinkedTransferQueue q = populatedQueue(SIZE);
824		try {
825	<	q.drainTo(null, 0);
825	>	q.drainTo(null, SIZE);
826		shouldThrow();
827	<	} catch (NullPointerException success) {
883	<	}
827	>	} catch (NullPointerException success) {}
828		}
829
830		/**
831	<	* drainTo(this, n) throws IAE
831	>	* drainTo(this, n) throws IllegalArgumentException
832		*/
833		public void testDrainToSelfN() {
834		LinkedTransferQueue q = populatedQueue(SIZE);
835		try {
836	<	q.drainTo(q, 0);
836	>	q.drainTo(q, SIZE);
837		shouldThrow();
838	<	} catch (IllegalArgumentException success) {
895	<	}
838	>	} catch (IllegalArgumentException success) {}
839		}
840
841		/**
842	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
842	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
843		*/
844		public void testDrainToN() {
845		LinkedTransferQueue q = new LinkedTransferQueue();
846		for (int i = 0; i < SIZE + 2; ++i) {
847		for (int j = 0; j < SIZE; j++) {
848	<	assertTrue(q.offer(new Integer(j)));
848	>	assertTrue(q.offer(j));
849		}
850		ArrayList l = new ArrayList();
851		q.drainTo(l, i);
#	Line 910 | Line 853 | public class LinkedTransferQueueTest ext
853		assertEquals(l.size(), k);
854		assertEquals(q.size(), SIZE - k);
855		for (int j = 0; j < k; ++j) {
856	<	assertEquals(l.get(j), new Integer(j));
856	>	assertEquals(l.get(j), j);
857		}
858	<	while (q.poll() != null);
858	>	while (q.poll() != null)
859	>	;
860		}
861		}
862
863	<	/*
864	<	* poll and take should decrement the waiting consumer count
863	>	/**
864	>	* timed poll() or take() increments the waiting consumer count;
865	>	* offer(e) decrements the waiting consumer count
866		*/
867	<	public void testWaitingConsumer() {
868	<	try {
869	<	final LinkedTransferQueue q = new LinkedTransferQueue();
870	<	final ConsumerObserver waiting = new ConsumerObserver();
871	<	new Thread(new Runnable() {
867	>	public void testWaitingConsumer() throws InterruptedException {
868	>	final LinkedTransferQueue q = new LinkedTransferQueue();
869	>	assertEquals(q.getWaitingConsumerCount(), 0);
870	>	assertFalse(q.hasWaitingConsumer());
871	>	final CountDownLatch threadStarted = new CountDownLatch(1);
872
873	<	public void run() {
874	<	try {
875	<	threadAssertTrue(q.hasWaitingConsumer());
876	<	waiting.setWaitingConsumer(q.getWaitingConsumerCount());
877	<	threadAssertTrue(q.offer(new Object()));
878	<	} catch (Exception ex) {
879	<	threadUnexpectedException();
935	<	}
873	>	Thread t = newStartedThread(new CheckedRunnable() {
874	>	public void realRun() throws InterruptedException {
875	>	threadStarted.countDown();
876	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
877	>	assertEquals(q.getWaitingConsumerCount(), 0);
878	>	assertFalse(q.hasWaitingConsumer());
879	>	}});
880
881	<	}
882	<	}).start();
883	<	assertTrue(q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS) != null);
884	<	assertTrue(q.getWaitingConsumerCount() < waiting.getWaitingConsumers());
885	<	} catch (Exception ex) {
886	<	this.unexpectedException();
887	<	}
881	>	threadStarted.await();
882	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
883	>	assertEquals(q.getWaitingConsumerCount(), 1);
884	>	assertTrue(q.hasWaitingConsumer());
885	>
886	>	assertTrue(q.offer(one));
887	>	assertEquals(q.getWaitingConsumerCount(), 0);
888	>	assertFalse(q.hasWaitingConsumer());
889	>
890	>	awaitTermination(t, MEDIUM_DELAY_MS);
891		}
945	–	/*
946	–	* Inserts null into transfer throws NPE
947	–	*/
892
893	<	public void testTransfer1() {
893	>	/**
894	>	* transfer(null) throws NullPointerException
895	>	*/
896	>	public void testTransfer1() throws InterruptedException {
897		try {
898		LinkedTransferQueue q = new LinkedTransferQueue();
899		q.transfer(null);
900		shouldThrow();
901	<	} catch (NullPointerException ex) {
955	<	} catch (Exception ex) {
956	<	this.unexpectedException();
957	<	}
901	>	} catch (NullPointerException success) {}
902		}
903
904	<	/*
905	<	* transfer attempts to insert into the queue then wait until that
906	<	* object is removed via take or poll.
904	>	/**
905	>	* transfer waits until a poll occurs. The transfered element
906	>	* is returned by this associated poll.
907		*/
908	<	public void testTransfer2() {
909	<	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
910	<	new Thread(new Runnable() {
908	>	public void testTransfer2() throws InterruptedException {
909	>	final LinkedTransferQueue<Integer> q
910	>	= new LinkedTransferQueue<Integer>();
911	>	final CountDownLatch threadStarted = new CountDownLatch(1);
912
913	<	public void run() {
914	<	try {
915	<	q.transfer(new Integer(SIZE));
916	<	threadAssertTrue(q.isEmpty());
917	<	} catch (Exception ex) {
918	<	threadUnexpectedException();
974	<	}
975	<	}
976	<	}).start();
913	>	Thread t = newStartedThread(new CheckedRunnable() {
914	>	public void realRun() throws InterruptedException {
915	>	threadStarted.countDown();
916	>	q.transfer(five);
917	>	checkEmpty(q);
918	>	}});
919
920	<	try {
921	<	Thread.sleep(SHORT_DELAY_MS);
922	<	assertEquals(1, q.size());
923	<	q.poll();
924	<	assertTrue(q.isEmpty());
925	<	} catch (Exception ex) {
984	<	this.unexpectedException();
985	<	}
920	>	threadStarted.await();
921	>	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
922	>	assertEquals(1, q.size());
923	>	assertSame(five, q.poll());
924	>	checkEmpty(q);
925	>	awaitTermination(t, MEDIUM_DELAY_MS);
926		}
927	<	/*
928	<	* transfer will attempt to transfer in fifo order and continue waiting if
929	<	* the element being transfered is not polled or taken
930	<	*/
931	<
932	<	public void testTransfer3() {
933	<	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
934	<	new Thread(new Runnable() {
935	<	public void run() {
936	<	try {
937	<	Integer i;
938	<	q.transfer((i = new Integer(SIZE + 1)));
939	<	threadAssertTrue(!q.contains(i));
940	<	threadAssertEquals(1, q.size());
941	<	} catch (Exception ex) {
942	<	threadUnexpectedException();
943	<	}
944	<	}
945	<	}).start();
946	<	Thread interruptedThread =
947	<	new Thread(new Runnable() {
948	<	public void run() {
949	<	try {
950	<	q.transfer(new Integer(SIZE));
951	<	threadShouldThrow();
952	<	} catch (InterruptedException ex) {
953	<	}
954	<	}
955	<	});
956	<	interruptedThread.start();
957	<	try {
958	<	Thread.sleep(LONG_DELAY_MS);
1019	<	assertEquals(2, q.size());
1020	<	q.poll();
1021	<	Thread.sleep(LONG_DELAY_MS);
1022	<	interruptedThread.interrupt();
1023	<	assertEquals(1, q.size());
1024	<	} catch (Exception ex) {
1025	<	this.unexpectedException();
1026	<	}
927	>
928	>	/**
929	>	* transfer waits until a poll occurs, and then transfers in fifo order
930	>	*/
931	>	public void testTransfer3() throws InterruptedException {
932	>	final LinkedTransferQueue<Integer> q
933	>	= new LinkedTransferQueue<Integer>();
934	>
935	>	Thread first = newStartedThread(new CheckedRunnable() {
936	>	public void realRun() throws InterruptedException {
937	>	q.transfer(four);
938	>	assertTrue(!q.contains(four));
939	>	assertEquals(1, q.size());
940	>	}});
941	>
942	>	Thread interruptedThread = newStartedThread(
943	>	new CheckedInterruptedRunnable() {
944	>	public void realRun() throws InterruptedException {
945	>	while (q.isEmpty())
946	>	Thread.yield();
947	>	q.transfer(five);
948	>	}});
949	>
950	>	while (q.size() < 2)
951	>	Thread.yield();
952	>	assertEquals(2, q.size());
953	>	assertSame(four, q.poll());
954	>	first.join();
955	>	assertEquals(1, q.size());
956	>	interruptedThread.interrupt();
957	>	interruptedThread.join();
958	>	checkEmpty(q);
959		}
960
961		/**
962	<	* transfer will wait as long as a poll or take occurs if one does occur
963	<	* the waiting is finished and the thread that tries to poll/take
1032	<	* wins in retrieving the element
962	>	* transfer waits until a poll occurs, at which point the polling
963	>	* thread returns the element
964		*/
965	<	public void testTransfer4() {
965	>	public void testTransfer4() throws InterruptedException {
966		final LinkedTransferQueue q = new LinkedTransferQueue();
1036	–	new Thread(new Runnable() {
967
968	<	public void run() {
969	<	try {
970	<	q.transfer(new Integer(four));
971	<	threadAssertFalse(q.contains(new Integer(four)));
972	<	threadAssertEquals(new Integer(three), q.poll());
973	<	} catch (Exception ex) {
974	<	threadUnexpectedException();
975	<	}
976	<	}
977	<	}).start();
978	<	try {
979	<	Thread.sleep(MEDIUM_DELAY_MS);
980	<	assertTrue(q.offer(three));
981	<	assertEquals(new Integer(four), q.poll());
1052	<	} catch (Exception ex) {
1053	<	this.unexpectedException();
1054	<	}
968	>	Thread t = newStartedThread(new CheckedRunnable() {
969	>	public void realRun() throws InterruptedException {
970	>	q.transfer(four);
971	>	assertFalse(q.contains(four));
972	>	assertSame(three, q.poll());
973	>	}});
974	>
975	>	while (q.isEmpty())
976	>	Thread.yield();
977	>	assertFalse(q.isEmpty());
978	>	assertEquals(1, q.size());
979	>	assertTrue(q.offer(three));
980	>	assertSame(four, q.poll());
981	>	awaitTermination(t, MEDIUM_DELAY_MS);
982		}
983	<	/*
984	<	* Insert null into trTransfer throws NPE
983	>
984	>	/**
985	>	* transfer waits until a take occurs. The transfered element
986	>	* is returned by this associated take.
987		*/
988	+	public void testTransfer5() throws InterruptedException {
989	+	final LinkedTransferQueue<Integer> q
990	+	= new LinkedTransferQueue<Integer>();
991
992	+	Thread t = newStartedThread(new CheckedRunnable() {
993	+	public void realRun() throws InterruptedException {
994	+	q.transfer(four);
995	+	checkEmpty(q);
996	+	}});
997	+
998	+	while (q.isEmpty())
999	+	Thread.yield();
1000	+	assertFalse(q.isEmpty());
1001	+	assertEquals(1, q.size());
1002	+	assertSame(four, q.take());
1003	+	checkEmpty(q);
1004	+	awaitTermination(t, MEDIUM_DELAY_MS);
1005	+	}
1006	+
1007	+	/**
1008	+	* tryTransfer(null) throws NullPointerException
1009	+	*/
1010		public void testTryTransfer1() {
1011		try {
1012		final LinkedTransferQueue q = new LinkedTransferQueue();
1013		q.tryTransfer(null);
1014	<	this.shouldThrow();
1015	<	} catch (NullPointerException ex) {
1066	<	} catch (Exception ex) {
1067	<	this.unexpectedException();
1068	<	}
1014	>	shouldThrow();
1015	>	} catch (NullPointerException success) {}
1016		}
1070	–	/*
1071	–	* tryTransfer returns false and does not enqueue if there are no consumers
1072	–	* waiting to poll or take.
1073	–	*/
1017
1018	<	public void testTryTransfer2() {
1019	<	try {
1020	<	final LinkedTransferQueue q = new LinkedTransferQueue();
1021	<	assertFalse(q.tryTransfer(new Object()));
1022	<	assertEquals(0, q.size());
1023	<	} catch (Exception ex) {
1024	<	this.unexpectedException();
1025	<	}
1018	>	/**
1019	>	* tryTransfer returns false and does not enqueue if there are no
1020	>	* consumers waiting to poll or take.
1021	>	*/
1022	>	public void testTryTransfer2() throws InterruptedException {
1023	>	final LinkedTransferQueue q = new LinkedTransferQueue();
1024	>	assertFalse(q.tryTransfer(new Object()));
1025	>	assertFalse(q.hasWaitingConsumer());
1026	>	checkEmpty(q);
1027		}
1028	<	/*
1029	<	* if there is a consumer waiting poll or take tryTransfer returns
1030	<	* true while enqueueing object
1028	>
1029	>	/**
1030	>	* If there is a consumer waiting in timed poll, tryTransfer
1031	>	* returns true while successfully transfering object.
1032		*/
1033	+	public void testTryTransfer3() throws InterruptedException {
1034	+	final Object hotPotato = new Object();
1035	+	final LinkedTransferQueue q = new LinkedTransferQueue();
1036
1037	<	public void testTryTransfer3() {
1038	<	try {
1039	<	final LinkedTransferQueue q = new LinkedTransferQueue();
1040	<	new Thread(new Runnable() {
1037	>	Thread t = newStartedThread(new CheckedRunnable() {
1038	>	public void realRun() {
1039	>	while (! q.hasWaitingConsumer())
1040	>	Thread.yield();
1041	>	assertTrue(q.hasWaitingConsumer());
1042	>	checkEmpty(q);
1043	>	assertTrue(q.tryTransfer(hotPotato));
1044	>	}});
1045	>
1046	>	assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
1047	>	checkEmpty(q);
1048	>	awaitTermination(t, MEDIUM_DELAY_MS);
1049	>	}
1050
1051	<	public void run() {
1052	<	try {
1053	<	threadAssertTrue(q.hasWaitingConsumer());
1054	<	threadAssertTrue(q.tryTransfer(new Object()));
1055	<	} catch (Exception ex) {
1056	<	threadUnexpectedException();
1057	<	}
1051	>	/**
1052	>	* If there is a consumer waiting in take, tryTransfer returns
1053	>	* true while successfully transfering object.
1054	>	*/
1055	>	public void testTryTransfer4() throws InterruptedException {
1056	>	final Object hotPotato = new Object();
1057	>	final LinkedTransferQueue q = new LinkedTransferQueue();
1058
1059	<	}
1060	<	}).start();
1061	<	assertTrue(q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS) != null);
1062	<	assertTrue(q.isEmpty());
1063	<	} catch (Exception ex) {
1064	<	this.unexpectedException();
1065	<	}
1059	>	Thread t = newStartedThread(new CheckedRunnable() {
1060	>	public void realRun() {
1061	>	while (! q.hasWaitingConsumer())
1062	>	Thread.yield();
1063	>	assertTrue(q.hasWaitingConsumer());
1064	>	checkEmpty(q);
1065	>	assertTrue(q.tryTransfer(hotPotato));
1066	>	}});
1067	>
1068	>	assertSame(q.take(), hotPotato);
1069	>	checkEmpty(q);
1070	>	awaitTermination(t, MEDIUM_DELAY_MS);
1071		}
1072
1073	<	/*
1074	<	* tryTransfer waits the amount given if interrupted, show an
1075	<	* interrupted exception
1073	>	/**
1074	>	* tryTransfer waits the amount given if interrupted, and
1075	>	* throws interrupted exception
1076		*/
1077	<	public void testTryTransfer4() {
1077	>	public void testTryTransfer5() throws InterruptedException {
1078		final LinkedTransferQueue q = new LinkedTransferQueue();
1079	<	Thread toInterrupt = new Thread(new Runnable() {
1079	>	final CountDownLatch threadStarted = new CountDownLatch(1);
1080
1081	<	public void run() {
1081	>	Thread t = newStartedThread(new CheckedRunnable() {
1082	>	public void realRun() throws InterruptedException {
1083	>	long t0 = System.nanoTime();
1084	>	threadStarted.countDown();
1085		try {
1086	<	q.tryTransfer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS);
1087	<	threadShouldThrow();
1088	<	} catch (InterruptedException ex) {
1089	<	}
1090	<	}
1091	<	});
1092	<	try {
1093	<	toInterrupt.start();
1094	<	Thread.sleep(SMALL_DELAY_MS);
1095	<	toInterrupt.interrupt();
1096	<	} catch (Exception ex) {
1132	<	this.unexpectedException();
1133	<	}
1086	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
1087	>	shouldThrow();
1088	>	} catch (InterruptedException success) {}
1089	>	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
1090	>	}});
1091	>
1092	>	threadStarted.await();
1093	>	Thread.sleep(SHORT_DELAY_MS);
1094	>	t.interrupt();
1095	>	awaitTermination(t, MEDIUM_DELAY_MS);
1096	>	checkEmpty(q);
1097		}
1098
1099	<	/*
1100	<	* tryTransfer gives up after the timeout and return false
1099	>	/**
1100	>	* tryTransfer gives up after the timeout and returns false
1101		*/
1102	<	public void testTryTransfer5() {
1102	>	public void testTryTransfer6() throws InterruptedException {
1103		final LinkedTransferQueue q = new LinkedTransferQueue();
1141	–	try {
1142	–	new Thread(new Runnable() {
1104
1105	<	public void run() {
1106	<	try {
1107	<	threadAssertFalse(q.tryTransfer(new Object(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
1108	<	} catch (InterruptedException ex) {
1109	<	threadUnexpectedException();
1110	<	}
1111	<	}
1112	<	}).start();
1113	<	Thread.sleep(LONG_DELAY_MS);
1114	<	assertTrue(q.isEmpty());
1115	<	} catch (Exception ex) {
1155	<	this.unexpectedException();
1156	<	}
1105	>	Thread t = newStartedThread(new CheckedRunnable() {
1106	>	public void realRun() throws InterruptedException {
1107	>	long t0 = System.nanoTime();
1108	>	assertFalse(q.tryTransfer(new Object(),
1109	>	SHORT_DELAY_MS, MILLISECONDS));
1110	>	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
1111	>	checkEmpty(q);
1112	>	}});
1113	>
1114	>	awaitTermination(t, MEDIUM_DELAY_MS);
1115	>	checkEmpty(q);
1116		}
1117
1118	<	/*
1118	>	/**
1119		* tryTransfer waits for any elements previously in to be removed
1120		* before transfering to a poll or take
1121		*/
1122	<	public void testTryTransfer6() {
1122	>	public void testTryTransfer7() throws InterruptedException {
1123		final LinkedTransferQueue q = new LinkedTransferQueue();
1124	<	q.offer(new Integer(four));
1166	<	new Thread(new Runnable() {
1124	>	assertTrue(q.offer(four));
1125
1126	<	public void run() {
1127	<	try {
1128	<	threadAssertTrue(q.tryTransfer(new Integer(five), LONG_DELAY_MS, TimeUnit.MILLISECONDS));
1129	<	threadAssertTrue(q.isEmpty());
1130	<	} catch (InterruptedException ex) {
1131	<	threadUnexpectedException();
1132	<	}
1133	<	}
1134	<	}).start();
1135	<	try {
1136	<	Thread.sleep(SHORT_DELAY_MS);
1137	<	assertEquals(2, q.size());
1138	<	assertEquals(new Integer(four), q.poll());
1181	<	assertEquals(new Integer(five), q.poll());
1182	<	assertTrue(q.isEmpty());
1183	<	} catch (Exception ex) {
1184	<	this.unexpectedException();
1185	<	}
1126	>	Thread t = newStartedThread(new CheckedRunnable() {
1127	>	public void realRun() throws InterruptedException {
1128	>	assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
1129	>	checkEmpty(q);
1130	>	}});
1131	>
1132	>	while (q.size() != 2)
1133	>	Thread.yield();
1134	>	assertEquals(2, q.size());
1135	>	assertSame(four, q.poll());
1136	>	assertSame(five, q.poll());
1137	>	checkEmpty(q);
1138	>	awaitTermination(t, MEDIUM_DELAY_MS);
1139		}
1140
1141	<	/*
1142	<	* tryTransfer attempts to enqueue into the q and fails returning false not
1143	<	* enqueueing and the successing poll is null
1141	>	/**
1142	>	* tryTransfer attempts to enqueue into the q and fails returning
1143	>	* false not enqueueing and the successive poll is null
1144		*/
1145	<	public void testTryTransfer7() {
1145	>	public void testTryTransfer8() throws InterruptedException {
1146		final LinkedTransferQueue q = new LinkedTransferQueue();
1147	<	q.offer(new Integer(four));
1148	<	new Thread(new Runnable() {
1149	<
1150	<	public void run() {
1151	<	try {
1152	<	threadAssertFalse(q.tryTransfer(new Integer(five), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
1153	<	threadAssertTrue(q.isEmpty());
1154	<	} catch (InterruptedException ex) {
1155	<	threadUnexpectedException();
1203	<	}
1204	<	}
1205	<	}).start();
1206	<	try {
1207	<	assertEquals(1, q.size());
1208	<	assertEquals(new Integer(four), q.poll());
1209	<	Thread.sleep(MEDIUM_DELAY_MS);
1210	<	assertNull(q.poll());
1211	<	} catch (Exception ex) {
1212	<	this.unexpectedException();
1213	<	}
1147	>	assertTrue(q.offer(four));
1148	>	assertEquals(1, q.size());
1149	>	long t0 = System.nanoTime();
1150	>	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1151	>	assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS);
1152	>	assertEquals(1, q.size());
1153	>	assertSame(four, q.poll());
1154	>	assertNull(q.poll());
1155	>	checkEmpty(q);
1156		}
1157
1158	<	private LinkedTransferQueue populatedQueue(
1159	<	int n) {
1160	<	LinkedTransferQueue q = new LinkedTransferQueue();
1161	<	assertTrue(q.isEmpty());
1162	<	int remainingCapacity = q.remainingCapacity();
1221	<	for (int i = 0; i <
1222	<	n; i++) {
1158	>	private LinkedTransferQueue<Integer> populatedQueue(int n) {
1159	>	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1160	>	checkEmpty(q);
1161	>	for (int i = 0; i < n; i++) {
1162	>	assertEquals(i, q.size());
1163		assertTrue(q.offer(i));
1164	+	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
1165		}
1225	–
1166		assertFalse(q.isEmpty());
1227	–	assertEquals(remainingCapacity, q.remainingCapacity());
1228	–	assertEquals(n, q.size());
1167		return q;
1168		}
1231	–
1232	–	private static class ConsumerObserver {
1233	–
1234	–	private int waitingConsumers;
1235	–
1236	–	private ConsumerObserver() {
1237	–	}
1238	–
1239	–	private void setWaitingConsumer(int i) {
1240	–	this.waitingConsumers = i;
1241	–	}
1242	–
1243	–	private int getWaitingConsumers() {
1244	–	return waitingConsumers;
1245	–	}
1246	–	}
1169		}

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