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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 1.23 by jsr166, Tue Dec 1 06:28:43 2009 UTC

#	Line 13 | Line 13 | import java.io.ObjectInputStream;
13		import java.io.ObjectOutputStream;
14		import java.util.ArrayList;
15		import java.util.Arrays;
16	–	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 junit.framework.Test;
22		import junit.framework.TestSuite;
23
24	+	@SuppressWarnings({"unchecked", "rawtypes"})
25		public class LinkedTransferQueueTest extends JSR166TestCase {
26
27		public static void main(String[] args) {
#	Line 30 | Line 32 | public class LinkedTransferQueueTest ext
32		return new TestSuite(LinkedTransferQueueTest.class);
33		}
34
35	+	void checkEmpty(LinkedTransferQueue q) throws InterruptedException {
36	+	assertTrue(q.isEmpty());
37	+	assertEquals(0, q.size());
38	+	assertNull(q.peek());
39	+	assertNull(q.poll());
40	+	assertNull(q.poll(0, MILLISECONDS));
41	+	assertEquals(q.toString(), "[]");
42	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
43	+	assertFalse(q.iterator().hasNext());
44	+	try {
45	+	q.element();
46	+	shouldThrow();
47	+	} catch (NoSuchElementException success) {}
48	+	try {
49	+	q.iterator().next();
50	+	shouldThrow();
51	+	} catch (NoSuchElementException success) {}
52	+	try {
53	+	q.remove();
54	+	shouldThrow();
55	+	} catch (NoSuchElementException success) {}
56	+	}
57	+
58		/**
59	<	* Constructor builds new queue with size being zero and empty being true
59	>	* Constructor builds new queue with size being zero and empty
60	>	* being true
61		*/
62		public void testConstructor1() {
63		assertEquals(0, new LinkedTransferQueue().size());
#	Line 39 | Line 65 | public class LinkedTransferQueueTest ext
65		}
66
67		/**
68	<	* Initializing constructor with null collection throws NPE
68	>	* Initializing constructor with null collection throws
69	>	* NullPointerException
70		*/
71		public void testConstructor2() {
72		try {
73		new LinkedTransferQueue(null);
74		shouldThrow();
75	<	} catch (NullPointerException success) {
49	<	}
75	>	} catch (NullPointerException success) {}
76		}
77
78		/**
79	<	* Initializing from Collection of null elements throws NPE
79	>	* Initializing from Collection of null elements throws
80	>	* NullPointerException
81		*/
82		public void testConstructor3() {
83		try {
84		Integer[] ints = new Integer[SIZE];
85	<	LinkedTransferQueue q = new LinkedTransferQueue(Arrays.asList(ints));
85	>	new LinkedTransferQueue(Arrays.asList(ints));
86		shouldThrow();
87	<	} catch (NullPointerException success) {
61	<	}
87	>	} catch (NullPointerException success) {}
88		}
89
90		/**
91		* Initializing constructor with a collection containing some null elements
92	<	* throws NPE
92	>	* throws NullPointerException
93		*/
94		public void testConstructor4() {
95		try {
96		Integer[] ints = new Integer[SIZE];
97		for (int i = 0; i < SIZE - 1; ++i) {
98	<	ints[i] = new Integer(i);
98	>	ints[i] = i;
99		}
100	<	LinkedTransferQueue q = new LinkedTransferQueue(Arrays.asList(ints));
100	>	new LinkedTransferQueue(Arrays.asList(ints));
101		shouldThrow();
102	<	} catch (NullPointerException success) {
77	<	}
102	>	} catch (NullPointerException success) {}
103		}
104
105		/**
106		* Queue contains all elements of the collection it is initialized by
107		*/
108		public void testConstructor5() {
109	<	try {
110	<	Integer[] ints = new Integer[SIZE];
111	<	for (int i = 0; i < SIZE; ++i) {
112	<	ints[i] = new Integer(i);
113	<	}
114	<	LinkedTransferQueue q = new LinkedTransferQueue(Arrays.asList(ints));
115	<	for (int i = 0; i < SIZE; ++i) {
116	<	assertEquals(ints[i], q.poll());
117	<	}
118	<	} finally {
109	>	Integer[] ints = new Integer[SIZE];
110	>	for (int i = 0; i < SIZE; ++i) {
111	>	ints[i] = i;
112	>	}
113	>	List intList = Arrays.asList(ints);
114	>	LinkedTransferQueue q
115	>	= new LinkedTransferQueue(intList);
116	>	assertEquals(q.size(), intList.size());
117	>	assertEquals(q.toString(), intList.toString());
118	>	assertTrue(Arrays.equals(q.toArray(),
119	>	intList.toArray()));
120	>	assertTrue(Arrays.equals(q.toArray(new Object[0]),
121	>	intList.toArray(new Object[0])));
122	>	assertTrue(Arrays.equals(q.toArray(new Object[SIZE]),
123	>	intList.toArray(new Object[SIZE])));
124	>	for (int i = 0; i < SIZE; ++i) {
125	>	assertEquals(ints[i], q.poll());
126		}
127		}
128
129		/**
130	<	* Remaining capacity never decrease nor increase on add or remove
130	>	* remainingCapacity() always returns Integer.MAX_VALUE
131		*/
132		public void testRemainingCapacity() {
133	<	LinkedTransferQueue q = populatedQueue(SIZE);
102	<	int remainingCapacity = q.remainingCapacity();
133	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
134		for (int i = 0; i < SIZE; ++i) {
135	<	assertEquals(remainingCapacity, q.remainingCapacity());
135	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
136		assertEquals(SIZE - i, q.size());
137		q.remove();
138		}
139		for (int i = 0; i < SIZE; ++i) {
140	<	assertEquals(remainingCapacity, q.remainingCapacity());
140	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
141		assertEquals(i, q.size());
142	<	q.add(new Integer(i));
142	>	q.add(i);
143		}
144		}
145
146		/**
147	<	* offer(null) throws NPE
147	>	* offer(null) throws NullPointerException
148		*/
149		public void testOfferNull() {
150		try {
151		LinkedTransferQueue q = new LinkedTransferQueue();
152		q.offer(null);
153		shouldThrow();
154	<	} catch (NullPointerException success) {
124	<	}
154	>	} catch (NullPointerException success) {}
155		}
156
157		/**
158	<	* add(null) throws NPE
158	>	* add(null) throws NullPointerException
159		*/
160		public void testAddNull() {
161		try {
162		LinkedTransferQueue q = new LinkedTransferQueue();
163		q.add(null);
164		shouldThrow();
165	<	} catch (NullPointerException success) {
136	<	}
165	>	} catch (NullPointerException success) {}
166		}
167
168		/**
169	<	* addAll(null) throws NPE
169	>	* addAll(null) throws NullPointerException
170		*/
171		public void testAddAll1() {
172		try {
173		LinkedTransferQueue q = new LinkedTransferQueue();
174		q.addAll(null);
175		shouldThrow();
176	<	} catch (NullPointerException success) {
148	<	}
176	>	} catch (NullPointerException success) {}
177		}
178
179		/**
180	<	* addAll(this) throws IAE
180	>	* addAll(this) throws IllegalArgumentException
181		*/
182		public void testAddAllSelf() {
183		try {
184		LinkedTransferQueue q = populatedQueue(SIZE);
185		q.addAll(q);
186		shouldThrow();
187	<	} catch (IllegalArgumentException success) {
160	<	}
187	>	} catch (IllegalArgumentException success) {}
188		}
189
190		/**
191	<	* addAll of a collection with null elements throws NPE
191	>	* addAll of a collection with null elements throws NullPointerException
192		*/
193		public void testAddAll2() {
194		try {
#	Line 169 | Line 196 | public class LinkedTransferQueueTest ext
196		Integer[] ints = new Integer[SIZE];
197		q.addAll(Arrays.asList(ints));
198		shouldThrow();
199	<	} catch (NullPointerException success) {
173	<	}
199	>	} catch (NullPointerException success) {}
200		}
201
202		/**
203	<	* addAll of a collection with any null elements throws NPE after
204	<	* possibly adding some elements
203	>	* addAll of a collection with any null elements throws
204	>	* NullPointerException after possibly adding some elements
205		*/
206		public void testAddAll3() {
207		try {
208		LinkedTransferQueue q = new LinkedTransferQueue();
209		Integer[] ints = new Integer[SIZE];
210		for (int i = 0; i < SIZE - 1; ++i) {
211	<	ints[i] = new Integer(i);
211	>	ints[i] = i;
212		}
213		q.addAll(Arrays.asList(ints));
214		shouldThrow();
215	<	} catch (NullPointerException success) {
190	<	}
215	>	} catch (NullPointerException success) {}
216		}
217
218		/**
219		* Queue contains all elements, in traversal order, of successful addAll
220		*/
221		public void testAddAll5() {
222	<	try {
223	<	Integer[] empty = new Integer[0];
224	<	Integer[] ints = new Integer[SIZE];
225	<	for (int i = 0; i < SIZE; ++i) {
226	<	ints[i] = new Integer(i);
227	<	}
228	<	LinkedTransferQueue q = new LinkedTransferQueue();
229	<	assertFalse(q.addAll(Arrays.asList(empty)));
230	<	assertTrue(q.addAll(Arrays.asList(ints)));
231	<	for (int i = 0; i < SIZE; ++i) {
207	<	assertEquals(ints[i], q.poll());
208	<	}
209	<	} finally {
222	>	Integer[] empty = new Integer[0];
223	>	Integer[] ints = new Integer[SIZE];
224	>	for (int i = 0; i < SIZE; ++i) {
225	>	ints[i] = i;
226	>	}
227	>	LinkedTransferQueue q = new LinkedTransferQueue();
228	>	assertFalse(q.addAll(Arrays.asList(empty)));
229	>	assertTrue(q.addAll(Arrays.asList(ints)));
230	>	for (int i = 0; i < SIZE; ++i) {
231	>	assertEquals(ints[i], q.poll());
232		}
233		}
234
235		/**
236	<	* put(null) throws NPE
236	>	* put(null) throws NullPointerException
237		*/
238	<	public void testPutNull() {
238	>	public void testPutNull() throws InterruptedException {
239		try {
240		LinkedTransferQueue q = new LinkedTransferQueue();
241		q.put(null);
242		shouldThrow();
243	<	} catch (NullPointerException success) {
222	<	} catch (Exception ie) {
223	<	unexpectedException();
224	<	}
243	>	} catch (NullPointerException success) {}
244		}
245
246		/**
247		* all elements successfully put are contained
248		*/
249		public void testPut() {
250	<	try {
251	<	LinkedTransferQueue q = new LinkedTransferQueue();
252	<	for (int i = 0; i < SIZE; ++i) {
253	<	Integer I = new Integer(i);
254	<	q.put(I);
236	<	assertTrue(q.contains(I));
237	<	}
238	<	} catch (Exception ie) {
239	<	unexpectedException();
250	>	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
251	>	for (int i = 0; i < SIZE; ++i) {
252	>	assertEquals(q.size(), i);
253	>	q.put(i);
254	>	assertTrue(q.contains(i));
255		}
256		}
257
258		/**
259		* take retrieves elements in FIFO order
260		*/
261	<	public void testTake() {
262	<	try {
263	<	LinkedTransferQueue q = populatedQueue(SIZE);
264	<	for (int i = 0; i < SIZE; ++i) {
250	<	assertEquals(i, ((Integer) q.take()).intValue());
251	<	}
252	<	} catch (InterruptedException e) {
253	<	unexpectedException();
261	>	public void testTake() throws InterruptedException {
262	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
263	>	for (int i = 0; i < SIZE; ++i) {
264	>	assertEquals(i, (int) q.take());
265		}
266		}
267
268		/**
269		* take blocks interruptibly when empty
270		*/
271	<	public void testTakeFromEmpty() {
271	>	public void testTakeFromEmpty() throws InterruptedException {
272		final LinkedTransferQueue q = new LinkedTransferQueue();
273	<	Thread t = new Thread(new Runnable() {
274	<
275	<	public void run() {
276	<	try {
277	<	q.take();
278	<	threadShouldThrow();
279	<	} catch (InterruptedException success) {
269	<	}
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	<	}
273	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
274	>	public void realRun() throws InterruptedException {
275	>	q.take();
276	>	}});
277	>	Thread.sleep(SHORT_DELAY_MS);
278	>	t.interrupt();
279	>	t.join();
280		}
281
282		/**
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() {
285	>	public void testBlockingTake() throws InterruptedException {
286	>	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
287	>	Thread t = new Thread(new CheckedRunnable() {
288	>	public void realRun() throws InterruptedException {
289	>	for (int i = 0; i < SIZE; ++i) {
290	>	assertEquals(i, (int) q.take());
291	>	}
292		try {
290	–	LinkedTransferQueue q = populatedQueue(SIZE);
291	–	for (int i = 0; i < SIZE; ++i) {
292	–	assertEquals(i, ((Integer) q.take()).intValue());
293	–	}
293		q.take();
294	<	threadShouldThrow();
295	<	} catch (InterruptedException success) {
296	<	}
297	<	}
299	<	});
294	>	shouldThrow();
295	>	} catch (InterruptedException success) {}
296	>	}});
297	>
298		t.start();
299	<	try {
300	<	Thread.sleep(SHORT_DELAY_MS);
301	<	t.interrupt();
302	<	t.join();
305	<	} catch (InterruptedException ie) {
306	<	unexpectedException();
307	<	}
299	>	Thread.sleep(SHORT_DELAY_MS);
300	>	t.interrupt();
301	>	t.join();
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
319		*/
320	<	public void testTimedPoll0() {
321	<	try {
322	<	LinkedTransferQueue q = populatedQueue(SIZE);
323	<	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();
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
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));
346	<	} catch (InterruptedException e) {
347	<	unexpectedException();
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(LONG_DELAY_MS, MILLISECONDS));
337	>	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
338	>	assertTrue(millisElapsed < SMALL_DELAY_MS);
339		}
340	+	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
341	+	checkEmpty(q);
342		}
343
344		/**
345		* Interrupted timed poll throws InterruptedException instead of
346		* returning timeout status
347		*/
348	<	public void testInterruptedTimedPoll() {
349	<	Thread t = new Thread(new Runnable() {
350	<
351	<	public void run() {
352	<	try {
353	<	LinkedTransferQueue q = populatedQueue(SIZE);
354	<	for (int i = 0; i < SIZE; ++i) {
355	<	threadAssertEquals(i, ((Integer) q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue());
356	<	}
364	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
365	<	} catch (InterruptedException success) {
348	>	public void testInterruptedTimedPoll() throws InterruptedException {
349	>	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
350	>	Thread t = newStartedThread(new CheckedRunnable() {
351	>	public void realRun() throws InterruptedException {
352	>	for (int i = 0; i < SIZE; ++i) {
353	>	long t0 = System.nanoTime();
354	>	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
355	>	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
356	>	assertTrue(millisElapsed < SMALL_DELAY_MS);
357		}
358	<	}
359	<	});
360	<	t.start();
361	<	try {
362	<	Thread.sleep(SHORT_DELAY_MS);
363	<	t.interrupt();
364	<	t.join();
365	<	} catch (InterruptedException ie) {
366	<	unexpectedException();
367	<	}
358	>	try {
359	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
360	>	shouldThrow();
361	>	} catch (InterruptedException success) {}
362	>	}});
363	>
364	>	Thread.sleep(SMALL_DELAY_MS);
365	>	t.interrupt();
366	>	t.join();
367	>	checkEmpty(q);
368		}
369
370		/**
371		* timed poll before a delayed offer fails; after offer succeeds;
372		* on interruption throws
373		*/
374	<	public void testTimedPollWithOffer() {
374	>	public void testTimedPollWithOffer() throws InterruptedException {
375		final LinkedTransferQueue q = new LinkedTransferQueue();
376	<	Thread t = new Thread(new Runnable() {
377	<
378	<	public void run() {
376	>	Thread t = new Thread(new CheckedRunnable() {
377	>	public void realRun() throws InterruptedException {
378	>	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
379	>	assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS));
380		try {
381	<	threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
382	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
383	<	q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
384	<	threadShouldThrow();
385	<	} catch (InterruptedException success) {
386	<	}
387	<	}
388	<	});
389	<	try {
390	<	t.start();
399	<	Thread.sleep(SMALL_DELAY_MS);
400	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
401	<	t.interrupt();
402	<	t.join();
403	<	} catch (Exception e) {
404	<	unexpectedException();
405	<	}
381	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
382	>	shouldThrow();
383	>	} catch (InterruptedException success) {}
384	>	}});
385	>
386	>	t.start();
387	>	Thread.sleep(SMALL_DELAY_MS);
388	>	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
389	>	t.interrupt();
390	>	t.join();
391		}
392
393		/**
394		* peek returns next element, or null if empty
395		*/
396	<	public void testPeek() {
397	<	LinkedTransferQueue q = populatedQueue(SIZE);
396	>	public void testPeek() throws InterruptedException {
397	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
398		for (int i = 0; i < SIZE; ++i) {
399	<	assertEquals(i, ((Integer) q.peek()).intValue());
400	<	q.poll();
399	>	assertEquals(i, (int) q.peek());
400	>	assertEquals(i, (int) q.poll());
401		assertTrue(q.peek() == null ||
402	<	i != ((Integer) q.peek()).intValue());
402	>	i != (int) q.peek());
403		}
404		assertNull(q.peek());
405	+	checkEmpty(q);
406		}
407
408		/**
409	<	* element returns next element, or throws NSEE if empty
409	>	* element returns next element, or throws NoSuchElementException if empty
410		*/
411	<	public void testElement() {
412	<	LinkedTransferQueue q = populatedQueue(SIZE);
411	>	public void testElement() throws InterruptedException {
412	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
413		for (int i = 0; i < SIZE; ++i) {
414	<	assertEquals(i, ((Integer) q.element()).intValue());
415	<	q.poll();
414	>	assertEquals(i, (int) q.element());
415	>	assertEquals(i, (int) q.poll());
416		}
417		try {
418		q.element();
419		shouldThrow();
420	<	} catch (NoSuchElementException success) {
421	<	}
420	>	} catch (NoSuchElementException success) {}
421	>	checkEmpty(q);
422		}
423
424		/**
425	<	* remove removes next element, or throws NSEE if empty
425	>	* remove removes next element, or throws NoSuchElementException if empty
426		*/
427	<	public void testRemove() {
428	<	LinkedTransferQueue q = populatedQueue(SIZE);
427	>	public void testRemove() throws InterruptedException {
428	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
429		for (int i = 0; i < SIZE; ++i) {
430	<	assertEquals(i, ((Integer) q.remove()).intValue());
430	>	assertEquals(i, (int) q.remove());
431		}
432		try {
433		q.remove();
434		shouldThrow();
435	<	} catch (NoSuchElementException success) {
436	<	}
435	>	} catch (NoSuchElementException success) {}
436	>	checkEmpty(q);
437		}
438
439		/**
440		* remove(x) removes x and returns true if present
441		*/
442	<	public void testRemoveElement() {
442	>	public void testRemoveElement() throws InterruptedException {
443		LinkedTransferQueue q = populatedQueue(SIZE);
444		for (int i = 1; i < SIZE; i += 2) {
445	<	assertTrue(q.remove(new Integer(i)));
445	>	assertTrue(q.remove(i));
446		}
447		for (int i = 0; i < SIZE; i += 2) {
448	<	assertTrue(q.remove(new Integer(i)));
449	<	assertFalse(q.remove(new Integer(i + 1)));
448	>	assertTrue(q.remove(i));
449	>	assertFalse(q.remove(i + 1));
450		}
451	<	assertTrue(q.isEmpty());
451	>	checkEmpty(q);
452		}
453
454		/**
455		* An add following remove(x) succeeds
456		*/
457	<	public void testRemoveElementAndAdd() {
458	<	try {
459	<	LinkedTransferQueue q = new LinkedTransferQueue();
460	<	assertTrue(q.add(new Integer(1)));
461	<	assertTrue(q.add(new Integer(2)));
462	<	assertTrue(q.remove(new Integer(1)));
463	<	assertTrue(q.remove(new Integer(2)));
464	<	assertTrue(q.add(new Integer(3)));
479	<	assertTrue(q.take() != null);
480	<	} catch (Exception e) {
481	<	unexpectedException();
482	<	}
457	>	public void testRemoveElementAndAdd() throws InterruptedException {
458	>	LinkedTransferQueue q = new LinkedTransferQueue();
459	>	assertTrue(q.add(one));
460	>	assertTrue(q.add(two));
461	>	assertTrue(q.remove(one));
462	>	assertTrue(q.remove(two));
463	>	assertTrue(q.add(three));
464	>	assertSame(q.take(), three);
465		}
466
467		/**
468		* contains(x) reports true when elements added but not yet removed
469		*/
470		public void testContains() {
471	<	LinkedTransferQueue q = populatedQueue(SIZE);
471	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
472		for (int i = 0; i < SIZE; ++i) {
473	<	assertTrue(q.contains(new Integer(i)));
474	<	q.poll();
475	<	assertFalse(q.contains(new Integer(i)));
473	>	assertTrue(q.contains(i));
474	>	assertEquals(i, (int) q.poll());
475	>	assertFalse(q.contains(i));
476		}
477		}
478
479		/**
480		* clear removes all elements
481		*/
482	<	public void testClear() {
482	>	public void testClear() throws InterruptedException {
483		LinkedTransferQueue q = populatedQueue(SIZE);
502	–	int remainingCapacity = q.remainingCapacity();
484		q.clear();
485	<	assertTrue(q.isEmpty());
486	<	assertEquals(0, q.size());
506	<	assertEquals(remainingCapacity, q.remainingCapacity());
485	>	checkEmpty(q);
486	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
487		q.add(one);
488		assertFalse(q.isEmpty());
489	+	assertEquals(1, q.size());
490		assertTrue(q.contains(one));
491		q.clear();
492	<	assertTrue(q.isEmpty());
492	>	checkEmpty(q);
493		}
494
495		/**
496		* containsAll(c) is true when c contains a subset of elements
497		*/
498		public void testContainsAll() {
499	<	LinkedTransferQueue q = populatedQueue(SIZE);
500	<	LinkedTransferQueue p = new LinkedTransferQueue();
499	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
500	>	LinkedTransferQueue<Integer> p = new LinkedTransferQueue<Integer>();
501		for (int i = 0; i < SIZE; ++i) {
502		assertTrue(q.containsAll(p));
503		assertFalse(p.containsAll(q));
504	<	p.add(new Integer(i));
504	>	p.add(i);
505		}
506		assertTrue(p.containsAll(q));
507		}
508
509		/**
510	<	* retainAll(c) retains only those elements of c and reports true if changed
510	>	* retainAll(c) retains only those elements of c and reports true
511	>	* if changed
512		*/
513		public void testRetainAll() {
514		LinkedTransferQueue q = populatedQueue(SIZE);
#	Line 545 | Line 527 | public class LinkedTransferQueueTest ext
527		}
528
529		/**
530	<	* removeAll(c) removes only those elements of c and reports true if changed
530	>	* removeAll(c) removes only those elements of c and reports true
531	>	* if changed
532		*/
533		public void testRemoveAll() {
534		for (int i = 1; i < SIZE; ++i) {
#	Line 554 | Line 537 | public class LinkedTransferQueueTest ext
537		assertTrue(q.removeAll(p));
538		assertEquals(SIZE - i, q.size());
539		for (int j = 0; j < i; ++j) {
540	<	Integer I = (Integer) (p.remove());
558	<	assertFalse(q.contains(I));
540	>	assertFalse(q.contains(p.remove()));
541		}
542		}
543		}
544
545		/**
546	<	* toArray contains all elements
546	>	* toArray() contains all elements
547		*/
548	<	public void testToArray() {
548	>	public void testToArray() throws InterruptedException {
549		LinkedTransferQueue q = populatedQueue(SIZE);
550		Object[] o = q.toArray();
551	<	try {
552	<	for (int i = 0; i < o.length; i++) {
571	<	assertEquals(o[i], q.take());
572	<	}
573	<	} catch (InterruptedException e) {
574	<	unexpectedException();
551	>	for (int i = 0; i < o.length; i++) {
552	>	assertEquals(o[i], q.take());
553		}
554		}
555
556		/**
557		* toArray(a) contains all elements
558		*/
559	<	public void testToArray2() {
560	<	LinkedTransferQueue q = populatedQueue(SIZE);
559	>	public void testToArray2() throws InterruptedException {
560	>	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
561		Integer[] ints = new Integer[SIZE];
562	<	ints = (Integer[]) q.toArray(ints);
563	<	try {
564	<	for (int i = 0; i < ints.length; i++) {
587	<	assertEquals(ints[i], q.take());
588	<	}
589	<	} catch (InterruptedException e) {
590	<	unexpectedException();
562	>	ints = q.toArray(ints);
563	>	for (int i = 0; i < ints.length; i++) {
564	>	assertEquals(ints[i], q.take());
565		}
566		}
567
568		/**
569	<	* toArray(null) throws NPE
569	>	* toArray(null) throws NullPointerException
570		*/
571		public void testToArray_BadArg() {
572	+	LinkedTransferQueue q = populatedQueue(SIZE);
573		try {
599	–	LinkedTransferQueue q = populatedQueue(SIZE);
574		Object o[] = q.toArray(null);
575		shouldThrow();
576	<	} catch (NullPointerException success) {
603	<	}
576	>	} catch (NullPointerException success) {}
577		}
578
579		/**
580	<	* toArray with incompatible array type throws CCE
580	>	* toArray(incompatible array type) throws CCE
581		*/
582		public void testToArray1_BadArg() {
583	+	LinkedTransferQueue q = populatedQueue(SIZE);
584		try {
611	–	LinkedTransferQueue q = populatedQueue(SIZE);
585		Object o[] = q.toArray(new String[10]);
586		shouldThrow();
587	<	} catch (ArrayStoreException success) {
615	<	}
587	>	} catch (ArrayStoreException success) {}
588		}
589
590		/**
591		* iterator iterates through all elements
592		*/
593	<	public void testIterator() {
593	>	public void testIterator() throws InterruptedException {
594		LinkedTransferQueue q = populatedQueue(SIZE);
595		Iterator it = q.iterator();
596	<	try {
597	<	while (it.hasNext()) {
598	<	assertEquals(it.next(), q.take());
627	<	}
628	<	} catch (InterruptedException e) {
629	<	unexpectedException();
596	>	int i = 0;
597	>	while (it.hasNext()) {
598	>	assertEquals(it.next(), i++);
599		}
600	+	assertEquals(i, SIZE);
601		}
602
603		/**
604	<	* iterator.remove removes current element
604	>	* iterator.remove() removes current element
605		*/
606		public void testIteratorRemove() {
607		final LinkedTransferQueue q = new LinkedTransferQueue();
#	Line 653 | Line 623 | public class LinkedTransferQueueTest ext
623		* iterator ordering is FIFO
624		*/
625		public void testIteratorOrdering() {
626	<	final LinkedTransferQueue q = new LinkedTransferQueue();
627	<	int remainingCapacity = q.remainingCapacity();
626	>	final LinkedTransferQueue<Integer> q
627	>	= new LinkedTransferQueue<Integer>();
628	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
629		q.add(one);
630		q.add(two);
631		q.add(three);
632	<	assertEquals(remainingCapacity, q.remainingCapacity());
632	>	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
633		int k = 0;
634	<	for (Iterator it = q.iterator(); it.hasNext();) {
635	<	int i = ((Integer) (it.next())).intValue();
665	<	assertEquals(++k, i);
634	>	for (Integer n : q) {
635	>	assertEquals(++k, (int) n);
636		}
637		assertEquals(3, k);
638		}
#	Line 675 | Line 645 | public class LinkedTransferQueueTest ext
645		q.add(one);
646		q.add(two);
647		q.add(three);
648	<	try {
649	<	for (Iterator it = q.iterator(); it.hasNext();) {
650	<	q.remove();
681	<	it.next();
682	<	}
683	<	} catch (ConcurrentModificationException e) {
684	<	unexpectedException();
648	>	for (Iterator it = q.iterator(); it.hasNext();) {
649	>	q.remove();
650	>	it.next();
651		}
652		assertEquals(0, q.size());
653		}
#	Line 705 | Line 671 | public class LinkedTransferQueueTest ext
671		q.add(one);
672		q.add(two);
673		ExecutorService executor = Executors.newFixedThreadPool(2);
708	–	executor.execute(new Runnable() {
674
675	<	public void run() {
676	<	try {
677	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
678	<	} catch (Exception e) {
679	<	threadUnexpectedException();
680	<	}
681	<	}
682	<	});
683	<
684	<	executor.execute(new Runnable() {
720	<
721	<	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	<	});
675	>	executor.execute(new CheckedRunnable() {
676	>	public void realRun() {
677	>	assertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS));
678	>	}});
679	>
680	>	executor.execute(new CheckedRunnable() {
681	>	public void realRun() throws InterruptedException {
682	>	Thread.sleep(SMALL_DELAY_MS);
683	>	assertEquals(one, q.take());
684	>	}});
685
686		joinPool(executor);
687		}
688
689		/**
690	<	* poll retrieves elements across Executor threads
690	>	* timed poll retrieves elements across Executor threads
691		*/
692		public void testPollInExecutor() {
693		final LinkedTransferQueue q = new LinkedTransferQueue();
694		ExecutorService executor = Executors.newFixedThreadPool(2);
740	–	executor.execute(new Runnable() {
741	–
742	–	public void run() {
743	–	threadAssertNull(q.poll());
744	–	try {
745	–	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS));
746	–	threadAssertTrue(q.isEmpty());
747	–	} catch (InterruptedException e) {
748	–	threadUnexpectedException();
749	–	}
750	–	}
751	–	});
695
696	<	executor.execute(new Runnable() {
697	<
698	<	public void run() {
699	<	try {
700	<	Thread.sleep(SMALL_DELAY_MS);
701	<	q.put(one);
702	<	} catch (InterruptedException e) {
703	<	threadUnexpectedException();
704	<	}
705	<	}
706	<	});
696	>	executor.execute(new CheckedRunnable() {
697	>	public void realRun() throws InterruptedException {
698	>	assertNull(q.poll());
699	>	assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
700	>	assertTrue(q.isEmpty());
701	>	}});
702	>
703	>	executor.execute(new CheckedRunnable() {
704	>	public void realRun() throws InterruptedException {
705	>	Thread.sleep(SMALL_DELAY_MS);
706	>	q.put(one);
707	>	}});
708
709		joinPool(executor);
710		}
#	Line 768 | Line 712 | public class LinkedTransferQueueTest ext
712		/**
713		* A deserialized serialized queue has same elements in same order
714		*/
715	<	public void testSerialization() {
715	>	public void testSerialization() throws Exception {
716		LinkedTransferQueue q = populatedQueue(SIZE);
717
718	<	try {
719	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
720	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
721	<	out.writeObject(q);
722	<	out.close();
723	<
724	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
725	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
726	<	LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
727	<
728	<	assertEquals(q.size(), r.size());
729	<	while (!q.isEmpty()) {
730	<	assertEquals(q.remove(), r.remove());
731	<	}
732	<	} catch (Exception e) {
789	<	unexpectedException();
718	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
719	>	ObjectOutputStream out
720	>	= new ObjectOutputStream(new BufferedOutputStream(bout));
721	>	out.writeObject(q);
722	>	out.close();
723	>
724	>	ByteArrayInputStream bin
725	>	= new ByteArrayInputStream(bout.toByteArray());
726	>	ObjectInputStream in
727	>	= new ObjectInputStream(new BufferedInputStream(bin));
728	>	LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
729	>
730	>	assertEquals(q.size(), r.size());
731	>	while (!q.isEmpty()) {
732	>	assertEquals(q.remove(), r.remove());
733		}
734		}
735
736		/**
737	<	* drainTo(null) throws NPE
737	>	* drainTo(null) throws NullPointerException
738		*/
739		public void testDrainToNull() {
740		LinkedTransferQueue q = populatedQueue(SIZE);
741		try {
742		q.drainTo(null);
743		shouldThrow();
744	<	} catch (NullPointerException success) {
802	<	}
744	>	} catch (NullPointerException success) {}
745		}
746
747		/**
748	<	* drainTo(this) throws IAE
748	>	* drainTo(this) throws IllegalArgumentException
749		*/
750		public void testDrainToSelf() {
751		LinkedTransferQueue q = populatedQueue(SIZE);
752		try {
753		q.drainTo(q);
754		shouldThrow();
755	<	} catch (IllegalArgumentException success) {
814	<	}
755	>	} catch (IllegalArgumentException success) {}
756		}
757
758		/**
#	Line 824 | Line 765 | public class LinkedTransferQueueTest ext
765		assertEquals(q.size(), 0);
766		assertEquals(l.size(), SIZE);
767		for (int i = 0; i < SIZE; ++i) {
768	<	assertEquals(l.get(i), new Integer(i));
768	>	assertEquals(l.get(i), i);
769		}
770		q.add(zero);
771		q.add(one);
#	Line 836 | Line 777 | public class LinkedTransferQueueTest ext
777		assertEquals(q.size(), 0);
778		assertEquals(l.size(), 2);
779		for (int i = 0; i < 2; ++i) {
780	<	assertEquals(l.get(i), new Integer(i));
780	>	assertEquals(l.get(i), i);
781		}
782		}
783
784		/**
785	<	* drainTo empties full queue, unblocking a waiting put.
785	>	* drainTo(c) empties full queue, unblocking a waiting put.
786		*/
787	<	public void testDrainToWithActivePut() {
787	>	public void testDrainToWithActivePut() throws InterruptedException {
788		final LinkedTransferQueue q = populatedQueue(SIZE);
789	<	Thread t = new Thread(new Runnable() {
790	<
791	<	public void run() {
792	<	try {
793	<	q.put(new Integer(SIZE + 1));
794	<	} catch (Exception ie) {
795	<	threadUnexpectedException();
796	<	}
797	<	}
857	<	});
858	<	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();
789	>	Thread t = newStartedThread(new CheckedRunnable() {
790	>	public void realRun() {
791	>	q.put(SIZE + 1);
792	>	}});
793	>	ArrayList l = new ArrayList();
794	>	q.drainTo(l);
795	>	assertTrue(l.size() >= SIZE);
796	>	for (int i = 0; i < SIZE; ++i) {
797	>	assertEquals(l.get(i), i);
798		}
799	+	t.join();
800	+	assertTrue(q.size() + l.size() >= SIZE);
801		}
802
803		/**
804	<	* drainTo(null, n) throws NPE
804	>	* drainTo(null, n) throws NullPointerException
805		*/
806		public void testDrainToNullN() {
807		LinkedTransferQueue q = populatedQueue(SIZE);
808		try {
809	<	q.drainTo(null, 0);
809	>	q.drainTo(null, SIZE);
810		shouldThrow();
811	<	} catch (NullPointerException success) {
882	<	}
811	>	} catch (NullPointerException success) {}
812		}
813
814		/**
815	<	* drainTo(this, n) throws IAE
815	>	* drainTo(this, n) throws IllegalArgumentException
816		*/
817		public void testDrainToSelfN() {
818		LinkedTransferQueue q = populatedQueue(SIZE);
819		try {
820	<	q.drainTo(q, 0);
820	>	q.drainTo(q, SIZE);
821		shouldThrow();
822	<	} catch (IllegalArgumentException success) {
894	<	}
822	>	} catch (IllegalArgumentException success) {}
823		}
824
825		/**
#	Line 901 | Line 829 | public class LinkedTransferQueueTest ext
829		LinkedTransferQueue q = new LinkedTransferQueue();
830		for (int i = 0; i < SIZE + 2; ++i) {
831		for (int j = 0; j < SIZE; j++) {
832	<	assertTrue(q.offer(new Integer(j)));
832	>	assertTrue(q.offer(j));
833		}
834		ArrayList l = new ArrayList();
835		q.drainTo(l, i);
#	Line 909 | Line 837 | public class LinkedTransferQueueTest ext
837		assertEquals(l.size(), k);
838		assertEquals(q.size(), SIZE - k);
839		for (int j = 0; j < k; ++j) {
840	<	assertEquals(l.get(j), new Integer(j));
840	>	assertEquals(l.get(j), j);
841		}
842	<	while (q.poll() != null);
842	>	while (q.poll() != null)
843	>	;
844		}
845		}
846
847		/**
848	<	* poll and take should decrement the waiting consumer count
848	>	* timed poll() or take() increments the waiting consumer count;
849	>	* offer(e) decrements the waiting consumer count
850		*/
851	<	public void testWaitingConsumer() {
852	<	try {
853	<	final LinkedTransferQueue q = new LinkedTransferQueue();
854	<	final ConsumerObserver waiting = new ConsumerObserver();
925	<	new Thread(new Runnable() {
851	>	public void testWaitingConsumer() throws InterruptedException {
852	>	final LinkedTransferQueue q = new LinkedTransferQueue();
853	>	assertEquals(q.getWaitingConsumerCount(), 0);
854	>	assertFalse(q.hasWaitingConsumer());
855
856	<	public void run() {
857	<	try {
858	<	threadAssertTrue(q.hasWaitingConsumer());
859	<	waiting.setWaitingConsumer(q.getWaitingConsumerCount());
860	<	threadAssertTrue(q.offer(new Object()));
861	<	} catch (Exception ex) {
862	<	threadUnexpectedException();
863	<	}
856	>	Thread t = newStartedThread(new CheckedRunnable() {
857	>	public void realRun() throws InterruptedException {
858	>	Thread.sleep(SMALL_DELAY_MS);
859	>	assertTrue(q.hasWaitingConsumer());
860	>	assertEquals(q.getWaitingConsumerCount(), 1);
861	>	assertTrue(q.offer(one));
862	>	assertFalse(q.hasWaitingConsumer());
863	>	assertEquals(q.getWaitingConsumerCount(), 0);
864	>	}});
865
866	<	}
867	<	}).start();
868	<	assertTrue(q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS) != null);
869	<	assertTrue(q.getWaitingConsumerCount() < waiting.getWaitingConsumers());
940	<	} catch (Exception ex) {
941	<	this.unexpectedException();
942	<	}
866	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
867	>	assertEquals(q.getWaitingConsumerCount(), 0);
868	>	assertFalse(q.hasWaitingConsumer());
869	>	t.join();
870		}
871
872		/**
873	<	* Inserts null into transfer throws NPE
873	>	* transfer(null) throws NullPointerException
874		*/
875	<	public void testTransfer1() {
875	>	public void testTransfer1() throws InterruptedException {
876		try {
877		LinkedTransferQueue q = new LinkedTransferQueue();
878		q.transfer(null);
879		shouldThrow();
880	<	} catch (NullPointerException ex) {
954	<	} catch (Exception ex) {
955	<	this.unexpectedException();
956	<	}
880	>	} catch (NullPointerException success) {}
881		}
882
883		/**
884	<	* transfer attempts to insert into the queue then wait until that
885	<	* object is removed via take or poll.
884	>	* transfer waits until a poll occurs. The transfered element
885	>	* is returned by this associated poll.
886		*/
887	<	public void testTransfer2() {
888	<	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
889	<	new Thread(new Runnable() {
887	>	public void testTransfer2() throws InterruptedException {
888	>	final LinkedTransferQueue<Integer> q
889	>	= new LinkedTransferQueue<Integer>();
890
891	<	public void run() {
892	<	try {
893	<	q.transfer(new Integer(SIZE));
894	<	threadAssertTrue(q.isEmpty());
895	<	} catch (Exception ex) {
972	<	threadUnexpectedException();
973	<	}
974	<	}
975	<	}).start();
891	>	Thread t = newStartedThread(new CheckedRunnable() {
892	>	public void realRun() throws InterruptedException {
893	>	q.transfer(SIZE);
894	>	threadAssertTrue(q.isEmpty());
895	>	}});
896
897	<	try {
898	<	Thread.sleep(SHORT_DELAY_MS);
899	<	assertEquals(1, q.size());
900	<	q.poll();
901	<	assertTrue(q.isEmpty());
982	<	} catch (Exception ex) {
983	<	this.unexpectedException();
984	<	}
897	>	Thread.sleep(SHORT_DELAY_MS);
898	>	assertEquals(1, q.size());
899	>	assertEquals(SIZE, (int) q.poll());
900	>	assertTrue(q.isEmpty());
901	>	t.join();
902		}
903
904		/**
905	<	* transfer will attempt to transfer in fifo order and continue
906	<	* waiting if the element being transfered is not polled or taken
907	<	*/
908	<	public void testTransfer3() {
909	<	final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
910	<	new Thread(new Runnable() {
911	<	public void run() {
912	<	try {
913	<	Integer i;
914	<	q.transfer((i = new Integer(SIZE + 1)));
915	<	threadAssertTrue(!q.contains(i));
916	<	threadAssertEquals(1, q.size());
917	<	} catch (Exception ex) {
918	<	threadUnexpectedException();
919	<	}
920	<	}
921	<	}).start();
922	<	Thread interruptedThread =
923	<	new Thread(new Runnable() {
924	<	public void run() {
925	<	try {
926	<	q.transfer(new Integer(SIZE));
927	<	threadShouldThrow();
928	<	} catch (InterruptedException ex) {
929	<	}
930	<	}
931	<	});
932	<	interruptedThread.start();
933	<	try {
934	<	Thread.sleep(LONG_DELAY_MS);
935	<	assertEquals(2, q.size());
936	<	q.poll();
1020	<	Thread.sleep(LONG_DELAY_MS);
1021	<	interruptedThread.interrupt();
1022	<	assertEquals(1, q.size());
1023	<	} catch (Exception ex) {
1024	<	this.unexpectedException();
1025	<	}
905	>	* transfer waits until a poll occurs, and then transfers in fifo order
906	>	*/
907	>	public void testTransfer3() throws InterruptedException {
908	>	final LinkedTransferQueue<Integer> q
909	>	= new LinkedTransferQueue<Integer>();
910	>
911	>	Thread first = newStartedThread(new CheckedRunnable() {
912	>	public void realRun() throws InterruptedException {
913	>	Integer i = SIZE + 1;
914	>	q.transfer(i);
915	>	threadAssertTrue(!q.contains(i));
916	>	threadAssertEquals(1, q.size());
917	>	}});
918	>
919	>	Thread interruptedThread = newStartedThread(
920	>	new CheckedInterruptedRunnable() {
921	>	public void realRun() throws InterruptedException {
922	>	while (q.size() == 0)
923	>	Thread.yield();
924	>	q.transfer(SIZE);
925	>	}});
926	>
927	>	while (q.size() < 2)
928	>	Thread.yield();
929	>	assertEquals(2, q.size());
930	>	assertEquals(SIZE + 1, (int) q.poll());
931	>	first.join();
932	>	assertEquals(1, q.size());
933	>	interruptedThread.interrupt();
934	>	interruptedThread.join();
935	>	assertEquals(0, q.size());
936	>	assertTrue(q.isEmpty());
937		}
938
939		/**
940	<	* transfer will wait as long as a poll or take occurs if one does occur
941	<	* the waiting is finished and the thread that tries to poll/take
1031	<	* wins in retrieving the element
940	>	* transfer waits until a poll occurs, at which point the polling
941	>	* thread returns the element
942		*/
943	<	public void testTransfer4() {
943	>	public void testTransfer4() throws InterruptedException {
944		final LinkedTransferQueue q = new LinkedTransferQueue();
1035	–	new Thread(new Runnable() {
945
946	<	public void run() {
947	<	try {
948	<	q.transfer(new Integer(four));
949	<	threadAssertFalse(q.contains(new Integer(four)));
950	<	threadAssertEquals(new Integer(three), q.poll());
951	<	} catch (Exception ex) {
952	<	threadUnexpectedException();
953	<	}
954	<	}
955	<	}).start();
956	<	try {
1048	<	Thread.sleep(MEDIUM_DELAY_MS);
1049	<	assertTrue(q.offer(three));
1050	<	assertEquals(new Integer(four), q.poll());
1051	<	} catch (Exception ex) {
1052	<	this.unexpectedException();
1053	<	}
946	>	Thread t = newStartedThread(new CheckedRunnable() {
947	>	public void realRun() throws InterruptedException {
948	>	q.transfer(four);
949	>	threadAssertFalse(q.contains(four));
950	>	threadAssertEquals(three, q.poll());
951	>	}});
952	>
953	>	Thread.sleep(SHORT_DELAY_MS);
954	>	assertTrue(q.offer(three));
955	>	assertEquals(four, q.poll());
956	>	t.join();
957		}
958
959		/**
960	<	* Insert null into tryTransfer throws NPE
960	>	* transfer waits until a take occurs. The transfered element
961	>	* is returned by this associated take.
962	>	*/
963	>	public void testTransfer5() throws InterruptedException {
964	>	final LinkedTransferQueue<Integer> q
965	>	= new LinkedTransferQueue<Integer>();
966	>
967	>	Thread t = newStartedThread(new CheckedRunnable() {
968	>	public void realRun() throws InterruptedException {
969	>	q.transfer(SIZE);
970	>	checkEmpty(q);
971	>	}});
972	>
973	>	Thread.sleep(SHORT_DELAY_MS);
974	>	assertEquals(SIZE, (int) q.take());
975	>	checkEmpty(q);
976	>	t.join();
977	>	}
978	>
979	>	/**
980	>	* tryTransfer(null) throws NullPointerException
981		*/
982		public void testTryTransfer1() {
983		try {
984		final LinkedTransferQueue q = new LinkedTransferQueue();
985		q.tryTransfer(null);
986	<	this.shouldThrow();
987	<	} catch (NullPointerException ex) {
1065	<	} catch (Exception ex) {
1066	<	this.unexpectedException();
1067	<	}
986	>	shouldThrow();
987	>	} catch (NullPointerException success) {}
988		}
989
990		/**
991	<	* tryTransfer returns false and does not enqueue if there are no consumers
992	<	* waiting to poll or take.
991	>	* tryTransfer returns false and does not enqueue if there are no
992	>	* consumers waiting to poll or take.
993		*/
994	<	public void testTryTransfer2() {
995	<	try {
996	<	final LinkedTransferQueue q = new LinkedTransferQueue();
997	<	assertFalse(q.tryTransfer(new Object()));
998	<	assertEquals(0, q.size());
1079	<	} catch (Exception ex) {
1080	<	this.unexpectedException();
1081	<	}
994	>	public void testTryTransfer2() throws InterruptedException {
995	>	final LinkedTransferQueue q = new LinkedTransferQueue();
996	>	assertFalse(q.tryTransfer(new Object()));
997	>	assertFalse(q.hasWaitingConsumer());
998	>	checkEmpty(q);
999		}
1000
1001		/**
1002	<	* if there is a consumer waiting poll or take tryTransfer returns
1003	<	* true while enqueueing object
1002	>	* If there is a consumer waiting in timed poll, tryTransfer
1003	>	* returns true while successfully transfering object.
1004		*/
1005	<	public void testTryTransfer3() {
1006	<	try {
1007	<	final LinkedTransferQueue q = new LinkedTransferQueue();
1091	<	new Thread(new Runnable() {
1005	>	public void testTryTransfer3() throws InterruptedException {
1006	>	final Object hotPotato = new Object();
1007	>	final LinkedTransferQueue q = new LinkedTransferQueue();
1008
1009	<	public void run() {
1010	<	try {
1011	<	threadAssertTrue(q.hasWaitingConsumer());
1012	<	threadAssertTrue(q.tryTransfer(new Object()));
1013	<	} catch (Exception ex) {
1014	<	threadUnexpectedException();
1015	<	}
1009	>	Thread t = newStartedThread(new CheckedRunnable() {
1010	>	public void realRun() {
1011	>	while (! q.hasWaitingConsumer())
1012	>	Thread.yield();
1013	>	threadAssertTrue(q.hasWaitingConsumer());
1014	>	threadAssertTrue(q.isEmpty());
1015	>	threadAssertTrue(q.size() == 0);
1016	>	threadAssertTrue(q.tryTransfer(hotPotato));
1017	>	}});
1018	>
1019	>	assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
1020	>	checkEmpty(q);
1021	>	t.join();
1022	>	}
1023
1024	<	}
1025	<	}).start();
1026	<	assertTrue(q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS) != null);
1027	<	assertTrue(q.isEmpty());
1028	<	} catch (Exception ex) {
1029	<	this.unexpectedException();
1030	<	}
1024	>	/**
1025	>	* If there is a consumer waiting in take, tryTransfer returns
1026	>	* true while successfully transfering object.
1027	>	*/
1028	>	public void testTryTransfer4() throws InterruptedException {
1029	>	final Object hotPotato = new Object();
1030	>	final LinkedTransferQueue q = new LinkedTransferQueue();
1031	>
1032	>	Thread t = newStartedThread(new CheckedRunnable() {
1033	>	public void realRun() {
1034	>	while (! q.hasWaitingConsumer())
1035	>	Thread.yield();
1036	>	threadAssertTrue(q.hasWaitingConsumer());
1037	>	threadAssertTrue(q.isEmpty());
1038	>	threadAssertTrue(q.size() == 0);
1039	>	threadAssertTrue(q.tryTransfer(hotPotato));
1040	>	}});
1041	>
1042	>	assertSame(q.take(), hotPotato);
1043	>	checkEmpty(q);
1044	>	t.join();
1045		}
1046
1047		/**
1048	<	* tryTransfer waits the amount given if interrupted, show an
1049	<	* interrupted exception
1048	>	* tryTransfer waits the amount given if interrupted, and
1049	>	* throws interrupted exception
1050		*/
1051	<	public void testTryTransfer4() {
1051	>	public void testTryTransfer5() throws InterruptedException {
1052		final LinkedTransferQueue q = new LinkedTransferQueue();
1116	–	Thread toInterrupt = new Thread(new Runnable() {
1053
1054	<	public void run() {
1055	<	try {
1056	<	q.tryTransfer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS);
1057	<	threadShouldThrow();
1058	<	} catch (InterruptedException ex) {
1059	<	}
1060	<	}
1061	<	});
1126	<	try {
1127	<	toInterrupt.start();
1128	<	Thread.sleep(SMALL_DELAY_MS);
1129	<	toInterrupt.interrupt();
1130	<	} catch (Exception ex) {
1131	<	this.unexpectedException();
1132	<	}
1054	>	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
1055	>	public void realRun() throws InterruptedException {
1056	>	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
1057	>	}});
1058	>
1059	>	Thread.sleep(SMALL_DELAY_MS);
1060	>	toInterrupt.interrupt();
1061	>	toInterrupt.join();
1062		}
1063
1064		/**
1065		* tryTransfer gives up after the timeout and return false
1066		*/
1067	<	public void testTryTransfer5() {
1067	>	public void testTryTransfer6() throws InterruptedException {
1068		final LinkedTransferQueue q = new LinkedTransferQueue();
1140	–	try {
1141	–	new Thread(new Runnable() {
1069
1070	<	public void run() {
1071	<	try {
1072	<	threadAssertFalse(q.tryTransfer(new Object(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
1073	<	} catch (InterruptedException ex) {
1074	<	threadUnexpectedException();
1075	<	}
1076	<	}
1077	<	}).start();
1078	<	Thread.sleep(LONG_DELAY_MS);
1152	<	assertTrue(q.isEmpty());
1153	<	} catch (Exception ex) {
1154	<	this.unexpectedException();
1155	<	}
1070	>	Thread t = newStartedThread(new CheckedRunnable() {
1071	>	public void realRun() throws InterruptedException {
1072	>	assertFalse(q.tryTransfer(new Object(),
1073	>	SHORT_DELAY_MS, MILLISECONDS));
1074	>	}});
1075	>
1076	>	Thread.sleep(SMALL_DELAY_MS);
1077	>	checkEmpty(q);
1078	>	t.join();
1079		}
1080
1081		/**
1082		* tryTransfer waits for any elements previously in to be removed
1083		* before transfering to a poll or take
1084		*/
1085	<	public void testTryTransfer6() {
1085	>	public void testTryTransfer7() throws InterruptedException {
1086		final LinkedTransferQueue q = new LinkedTransferQueue();
1087	<	q.offer(new Integer(four));
1165	<	new Thread(new Runnable() {
1087	>	assertTrue(q.offer(four));
1088
1089	<	public void run() {
1090	<	try {
1091	<	threadAssertTrue(q.tryTransfer(new Integer(five), LONG_DELAY_MS, TimeUnit.MILLISECONDS));
1092	<	threadAssertTrue(q.isEmpty());
1093	<	} catch (InterruptedException ex) {
1094	<	threadUnexpectedException();
1095	<	}
1096	<	}
1097	<	}).start();
1098	<	try {
1099	<	Thread.sleep(SHORT_DELAY_MS);
1100	<	assertEquals(2, q.size());
1179	<	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	<	}
1089	>	Thread t = newStartedThread(new CheckedRunnable() {
1090	>	public void realRun() throws InterruptedException {
1091	>	assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS));
1092	>	assertTrue(q.isEmpty());
1093	>	}});
1094	>
1095	>	Thread.sleep(SHORT_DELAY_MS);
1096	>	assertEquals(2, q.size());
1097	>	assertEquals(four, q.poll());
1098	>	assertEquals(five, q.poll());
1099	>	checkEmpty(q);
1100	>	t.join();
1101		}
1102
1103		/**
1104	<	* tryTransfer attempts to enqueue into the q and fails returning false not
1105	<	* enqueueing and the successive poll is null
1104	>	* tryTransfer attempts to enqueue into the q and fails returning
1105	>	* false not enqueueing and the successive poll is null
1106		*/
1107	<	public void testTryTransfer7() {
1107	>	public void testTryTransfer8() throws InterruptedException {
1108		final LinkedTransferQueue q = new LinkedTransferQueue();
1109	<	q.offer(new Integer(four));
1110	<	new Thread(new Runnable() {
1111	<
1112	<	public void run() {
1113	<	try {
1114	<	threadAssertFalse(q.tryTransfer(new Integer(five), SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
1115	<	threadAssertTrue(q.isEmpty());
1200	<	} catch (InterruptedException ex) {
1201	<	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	<	}
1109	>	assertTrue(q.offer(four));
1110	>	assertEquals(1, q.size());
1111	>	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1112	>	assertEquals(1, q.size());
1113	>	assertEquals(four, q.poll());
1114	>	assertNull(q.poll());
1115	>	checkEmpty(q);
1116		}
1117
1118	<	private LinkedTransferQueue populatedQueue(
1119	<	int n) {
1217	<	LinkedTransferQueue q = new LinkedTransferQueue();
1118	>	private LinkedTransferQueue<Integer> populatedQueue(int n) {
1119	>	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1120		assertTrue(q.isEmpty());
1121	<	int remainingCapacity = q.remainingCapacity();
1122	<	for (int i = 0; i <
1221	<	n; i++) {
1121	>	for (int i = 0; i < n; i++) {
1122	>	assertEquals(i, q.size());
1123		assertTrue(q.offer(i));
1124	+	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
1125		}
1224	–
1126		assertFalse(q.isEmpty());
1226	–	assertEquals(remainingCapacity, q.remainingCapacity());
1227	–	assertEquals(n, q.size());
1127		return q;
1128		}
1230	–
1231	–	private static class ConsumerObserver {
1232	–
1233	–	private int waitingConsumers;
1234	–
1235	–	private ConsumerObserver() {
1236	–	}
1237	–
1238	–	private void setWaitingConsumer(int i) {
1239	–	this.waitingConsumers = i;
1240	–	}
1241	–
1242	–	private int getWaitingConsumers() {
1243	–	return waitingConsumers;
1244	–	}
1245	–	}
1129		}

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