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

Comparing jsr166/src/test/tck/LinkedTransferQueueTest.java (file contents):
Revision 1.19 by jsr166, Sun Nov 22 00:17:37 2009 UTC vs.
Revision 1.87 by jsr166, Wed Jan 27 01:57:24 2021 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include John Vint
6		*/
7
8	<	import java.io.BufferedInputStream;
9	<	import java.io.BufferedOutputStream;
10	<	import java.io.ByteArrayInputStream;
11	<	import java.io.ByteArrayOutputStream;
12	<	import java.io.ObjectInputStream;
13	<	import java.io.ObjectOutputStream;
8	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
9	>
10		import java.util.ArrayList;
11		import java.util.Arrays;
12	+	import java.util.Collection;
13		import java.util.Iterator;
14		import java.util.List;
15		import java.util.NoSuchElementException;
16	<	import java.util.concurrent.*;
17	<	import static java.util.concurrent.TimeUnit.MILLISECONDS;
16	>	import java.util.Queue;
17	>	import java.util.concurrent.BlockingQueue;
18	>	import java.util.concurrent.Callable;
19	>	import java.util.concurrent.CountDownLatch;
20	>	import java.util.concurrent.Executors;
21	>	import java.util.concurrent.ExecutorService;
22	>	import java.util.concurrent.LinkedTransferQueue;
23	>
24		import junit.framework.Test;
22	–	import junit.framework.TestSuite;
25
26		@SuppressWarnings({"unchecked", "rawtypes"})
27		public class LinkedTransferQueueTest extends JSR166TestCase {
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());
35	>	main(suite(), args);
36		}
37
38		public static Test suite() {
39	<	return new TestSuite(LinkedTransferQueueTest.class);
40	<	}
41	<
42	<	void checkEmpty(LinkedTransferQueue q) throws InterruptedException {
43	<	assertTrue(q.isEmpty());
44	<	assertEquals(0, q.size());
45	<	assertNull(q.peek());
46	<	assertNull(q.poll());
47	<	assertNull(q.poll(0, MILLISECONDS));
48	<	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) {}
39	>	class Implementation implements CollectionImplementation {
40	>	public Class<?> klazz() { return LinkedTransferQueue.class; }
41	>	public Collection emptyCollection() { return new LinkedTransferQueue(); }
42	>	public Object makeElement(int i) { return JSR166TestCase.itemFor(i); }
43	>	public boolean isConcurrent() { return true; }
44	>	public boolean permitsNulls() { return false; }
45	>	}
46	>	return newTestSuite(LinkedTransferQueueTest.class,
47	>	new Generic().testSuite(),
48	>	CollectionTest.testSuite(new Implementation()));
49		}
50
51		/**
#	Line 60 | Line 53 | public class LinkedTransferQueueTest ext
53		* being true
54		*/
55		public void testConstructor1() {
56	<	assertEquals(0, new LinkedTransferQueue().size());
56	>	mustEqual(0, new LinkedTransferQueue().size());
57		assertTrue(new LinkedTransferQueue().isEmpty());
58		}
59
#	Line 80 | Line 73 | public class LinkedTransferQueueTest ext
73		* NullPointerException
74		*/
75		public void testConstructor3() {
76	+	Collection<Item> elements = Arrays.asList(new Item[SIZE]);
77		try {
78	<	Integer[] ints = new Integer[SIZE];
85	<	new LinkedTransferQueue(Arrays.asList(ints));
78	>	new LinkedTransferQueue(elements);
79		shouldThrow();
80		} catch (NullPointerException success) {}
81		}
#	Line 92 | Line 85 | public class LinkedTransferQueueTest ext
85		* throws NullPointerException
86		*/
87		public void testConstructor4() {
88	+	Item[] items = new Item[2];
89	+	items[0] = zero;
90	+	Collection<Item> elements = Arrays.asList(items);
91		try {
92	<	Integer[] ints = new Integer[SIZE];
97	<	for (int i = 0; i < SIZE - 1; ++i) {
98	<	ints[i] = i;
99	<	}
100	<	new LinkedTransferQueue(Arrays.asList(ints));
92	>	new LinkedTransferQueue(elements);
93		shouldThrow();
94		} catch (NullPointerException success) {}
95		}
#	Line 106 | Line 98 | public class LinkedTransferQueueTest ext
98		* Queue contains all elements of the collection it is initialized by
99		*/
100		public void testConstructor5() {
101	<	Integer[] ints = new Integer[SIZE];
102	<	for (int i = 0; i < SIZE; ++i) {
103	<	ints[i] = i;
104	<	}
105	<	List intList = Arrays.asList(ints);
114	<	LinkedTransferQueue q
115	<	= new LinkedTransferQueue(intList);
116	<	assertEquals(q.size(), intList.size());
117	<	assertEquals(q.toString(), intList.toString());
101	>	Item[] items = defaultItems;
102	>	List<Item> intList = Arrays.asList(items);
103	>	LinkedTransferQueue<Item> q = new LinkedTransferQueue<>(intList);
104	>	mustEqual(q.size(), intList.size());
105	>	mustEqual(q.toString(), intList.toString());
106		assertTrue(Arrays.equals(q.toArray(),
107		intList.toArray()));
108		assertTrue(Arrays.equals(q.toArray(new Object[0]),
#	Line 122 | Line 110 | public class LinkedTransferQueueTest ext
110		assertTrue(Arrays.equals(q.toArray(new Object[SIZE]),
111		intList.toArray(new Object[SIZE])));
112		for (int i = 0; i < SIZE; ++i) {
113	<	assertEquals(ints[i], q.poll());
113	>	mustEqual(items[i], q.poll());
114		}
115		}
116
#	Line 130 | Line 118 | public class LinkedTransferQueueTest ext
118		* remainingCapacity() always returns Integer.MAX_VALUE
119		*/
120		public void testRemainingCapacity() {
121	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
121	>	BlockingQueue<Item> q = populatedQueue(SIZE);
122		for (int i = 0; i < SIZE; ++i) {
123	<	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
124	<	assertEquals(SIZE - i, q.size());
125	<	q.remove();
123	>	mustEqual(Integer.MAX_VALUE, q.remainingCapacity());
124	>	mustEqual(SIZE - i, q.size());
125	>	mustEqual(i, q.remove());
126		}
127		for (int i = 0; i < SIZE; ++i) {
128	<	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
129	<	assertEquals(i, q.size());
130	<	q.add(i);
128	>	mustEqual(Integer.MAX_VALUE, q.remainingCapacity());
129	>	mustEqual(i, q.size());
130	>	mustAdd(q, i);
131		}
132		}
133
134		/**
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) {}
155	–	}
156	–
157	–	/**
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) {}
166	–	}
167	–
168	–	/**
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) {}
177	–	}
178	–
179	–	/**
135		* addAll(this) throws IllegalArgumentException
136		*/
137		public void testAddAllSelf() {
138	+	LinkedTransferQueue<Item> q = populatedQueue(SIZE);
139		try {
184	–	LinkedTransferQueue q = populatedQueue(SIZE);
140		q.addAll(q);
141		shouldThrow();
142		} catch (IllegalArgumentException success) {}
143		}
144
145		/**
191	–	* addAll of a collection with null elements throws NullPointerException
192	–	*/
193	–	public void testAddAll2() {
194	–	try {
195	–	LinkedTransferQueue q = new LinkedTransferQueue();
196	–	Integer[] ints = new Integer[SIZE];
197	–	q.addAll(Arrays.asList(ints));
198	–	shouldThrow();
199	–	} catch (NullPointerException success) {}
200	–	}
201	–
202	–	/**
146		* addAll of a collection with any null elements throws
147		* NullPointerException after possibly adding some elements
148		*/
149		public void testAddAll3() {
150	+	LinkedTransferQueue<Item> q = new LinkedTransferQueue<>();
151	+	Item[] items = new Item[2]; items[0] = zero;
152		try {
153	<	LinkedTransferQueue q = new LinkedTransferQueue();
209	<	Integer[] ints = new Integer[SIZE];
210	<	for (int i = 0; i < SIZE - 1; ++i) {
211	<	ints[i] = i;
212	<	}
213	<	q.addAll(Arrays.asList(ints));
153	>	q.addAll(Arrays.asList(items));
154		shouldThrow();
155		} catch (NullPointerException success) {}
156		}
#	Line 219 | Line 159 | public class LinkedTransferQueueTest ext
159		* Queue contains all elements, in traversal order, of successful addAll
160		*/
161		public void testAddAll5() {
162	<	Integer[] empty = new Integer[0];
163	<	Integer[] ints = new Integer[SIZE];
224	<	for (int i = 0; i < SIZE; ++i) {
225	<	ints[i] = i;
226	<	}
162	>	Item[] empty = new Item[0];
163	>	Item[] items = defaultItems;
164		LinkedTransferQueue q = new LinkedTransferQueue();
165		assertFalse(q.addAll(Arrays.asList(empty)));
166	<	assertTrue(q.addAll(Arrays.asList(ints)));
166	>	assertTrue(q.addAll(Arrays.asList(items)));
167		for (int i = 0; i < SIZE; ++i) {
168	<	assertEquals(ints[i], q.poll());
168	>	mustEqual(items[i], q.poll());
169		}
170		}
171
172		/**
236	–	* put(null) throws NullPointerException
237	–	*/
238	–	public void testPutNull() throws InterruptedException {
239	–	try {
240	–	LinkedTransferQueue q = new LinkedTransferQueue();
241	–	q.put(null);
242	–	shouldThrow();
243	–	} catch (NullPointerException success) {}
244	–	}
245	–
246	–	/**
173		* all elements successfully put are contained
174		*/
175		public void testPut() {
176	<	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
176	>	LinkedTransferQueue<Item> q = new LinkedTransferQueue<>();
177	>	Item[] items = defaultItems;
178		for (int i = 0; i < SIZE; ++i) {
179	<	assertEquals(q.size(), i);
180	<	q.put(i);
181	<	assertTrue(q.contains(i));
179	>	mustEqual(i, q.size());
180	>	q.put(items[i]);
181	>	mustContain(q, items[i]);
182		}
183		}
184
#	Line 259 | Line 186 | public class LinkedTransferQueueTest ext
186		* take retrieves elements in FIFO order
187		*/
188		public void testTake() throws InterruptedException {
189	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
189	>	LinkedTransferQueue<Item> q = populatedQueue(SIZE);
190		for (int i = 0; i < SIZE; ++i) {
191	<	assertEquals(i, (int) q.take());
191	>	mustEqual(i, q.take());
192		}
193		}
194
195		/**
196	<	* take blocks interruptibly when empty
270	<	*/
271	<	public void testTakeFromEmpty() throws InterruptedException {
272	<	final LinkedTransferQueue q = new LinkedTransferQueue();
273	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
274	<	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
196	>	* take removes existing elements until empty, then blocks interruptibly
197		*/
198		public void testBlockingTake() throws InterruptedException {
199	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
200	<	Thread t = new Thread(new CheckedRunnable() {
199	>	final BlockingQueue<Item> q = populatedQueue(SIZE);
200	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
201	>	Thread t = newStartedThread(new CheckedRunnable() {
202		public void realRun() throws InterruptedException {
203	<	for (int i = 0; i < SIZE; ++i) {
204	<	assertEquals(i, (int) q.take());
205	<	}
203	>	for (int i = 0; i < SIZE; i++) mustEqual(i, q.take());
204	>
205	>	Thread.currentThread().interrupt();
206		try {
207		q.take();
208		shouldThrow();
209		} catch (InterruptedException success) {}
210	+	assertFalse(Thread.interrupted());
211	+
212	+	pleaseInterrupt.countDown();
213	+	try {
214	+	q.take();
215	+	shouldThrow();
216	+	} catch (InterruptedException success) {}
217	+	assertFalse(Thread.interrupted());
218		}});
219
220	<	t.start();
221	<	Thread.sleep(SHORT_DELAY_MS);
220	>	await(pleaseInterrupt);
221	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
222		t.interrupt();
223	<	t.join();
302	<	checkEmpty(q);
223	>	awaitTermination(t);
224		}
225
226		/**
227		* poll succeeds unless empty
228		*/
229		public void testPoll() throws InterruptedException {
230	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
230	>	LinkedTransferQueue<Item> q = populatedQueue(SIZE);
231		for (int i = 0; i < SIZE; ++i) {
232	<	assertEquals(i, (int) q.poll());
232	>	mustEqual(i, q.poll());
233		}
234		assertNull(q.poll());
235		checkEmpty(q);
236		}
237
238		/**
239	<	* timed pool with zero timeout succeeds when non-empty, else times out
239	>	* timed poll with zero timeout succeeds when non-empty, else times out
240		*/
241		public void testTimedPoll0() throws InterruptedException {
242	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
242	>	LinkedTransferQueue<Item> q = populatedQueue(SIZE);
243		for (int i = 0; i < SIZE; ++i) {
244	<	assertEquals(i, (int) q.poll(0, MILLISECONDS));
244	>	mustEqual(i, q.poll(0, MILLISECONDS));
245		}
246		assertNull(q.poll(0, MILLISECONDS));
247		checkEmpty(q);
248		}
249
250		/**
251	<	* timed pool with nonzero timeout succeeds when non-empty, else times out
251	>	* timed poll with nonzero timeout succeeds when non-empty, else times out
252		*/
253		public void testTimedPoll() throws InterruptedException {
254	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
255	<	for (int i = 0; i < SIZE; ++i) {
256	<	long t0 = System.nanoTime();
257	<	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
258	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
259	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
260	<	}
261	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
254	>	LinkedTransferQueue<Item> q = populatedQueue(SIZE);
255	>	long startTime = System.nanoTime();
256	>	for (int i = 0; i < SIZE; ++i)
257	>	mustEqual(i, q.poll(LONG_DELAY_MS, MILLISECONDS));
258	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
259	>
260	>	startTime = System.nanoTime();
261	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
262	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
263		checkEmpty(q);
264		}
265
#	Line 346 | Line 268 | public class LinkedTransferQueueTest ext
268		* returning timeout status
269		*/
270		public void testInterruptedTimedPoll() throws InterruptedException {
271	<	final LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
271	>	final BlockingQueue<Item> q = populatedQueue(SIZE);
272	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
273		Thread t = newStartedThread(new CheckedRunnable() {
274	<	void realRun() throws InterruptedException {
275	<	for (int i = 0; i < SIZE; ++i) {
276	<	long t0 = System.nanoTime();
277	<	threadAssertEquals(i, (int) q.poll(LONG_DELAY_MS,
278	<	MILLISECONDS));
279	<	long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024);
280	<	assertTrue(millisElapsed < SMALL_DELAY_MS);
281	<	}
274	>	public void realRun() throws InterruptedException {
275	>	for (int i = 0; i < SIZE; i++)
276	>	mustEqual(i, q.poll(LONG_DELAY_MS, MILLISECONDS));
277	>
278	>	Thread.currentThread().interrupt();
279	>	try {
280	>	q.poll(randomTimeout(), randomTimeUnit());
281	>	shouldThrow();
282	>	} catch (InterruptedException success) {}
283	>	assertFalse(Thread.interrupted());
284	>
285	>	pleaseInterrupt.countDown();
286		try {
287	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
287	>	q.poll(LONGER_DELAY_MS, MILLISECONDS);
288		shouldThrow();
289		} catch (InterruptedException success) {}
290	+	assertFalse(Thread.interrupted());
291		}});
292
293	<	Thread.sleep(SMALL_DELAY_MS);
293	>	await(pleaseInterrupt);
294	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
295		t.interrupt();
296	<	t.join();
296	>	awaitTermination(t);
297		checkEmpty(q);
298		}
299
300		/**
301	<	* timed poll before a delayed offer fails; after offer succeeds;
302	<	* on interruption throws
301	>	* timed poll after thread interrupted throws InterruptedException
302	>	* instead of returning timeout status
303		*/
304	<	public void testTimedPollWithOffer() throws InterruptedException {
305	<	final LinkedTransferQueue q = new LinkedTransferQueue();
306	<	Thread t = new Thread(new CheckedRunnable() {
307	<	void realRun() throws InterruptedException {
308	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
309	<	assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS));
304	>	public void testTimedPollAfterInterrupt() throws InterruptedException {
305	>	final BlockingQueue<Item> q = populatedQueue(SIZE);
306	>	Thread t = newStartedThread(new CheckedRunnable() {
307	>	public void realRun() throws InterruptedException {
308	>	Thread.currentThread().interrupt();
309	>	for (int i = 0; i < SIZE; ++i)
310	>	mustEqual(i, q.poll(randomTimeout(), randomTimeUnit()));
311		try {
312	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
312	>	q.poll(randomTimeout(), randomTimeUnit());
313		shouldThrow();
314		} catch (InterruptedException success) {}
315	+	assertFalse(Thread.interrupted());
316		}});
317
318	<	t.start();
319	<	Thread.sleep(SMALL_DELAY_MS);
389	<	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
390	<	t.interrupt();
391	<	t.join();
318	>	awaitTermination(t);
319	>	checkEmpty(q);
320		}
321
322		/**
323		* peek returns next element, or null if empty
324		*/
325		public void testPeek() throws InterruptedException {
326	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
326	>	LinkedTransferQueue<Item> q = populatedQueue(SIZE);
327		for (int i = 0; i < SIZE; ++i) {
328	<	assertEquals(i, (int) q.peek());
329	<	assertEquals(i, (int) q.poll());
328	>	mustEqual(i, q.peek());
329	>	mustEqual(i, q.poll());
330		assertTrue(q.peek() == null ||
331	<	i != (int) q.peek());
331	>	i != q.peek().value);
332		}
333		assertNull(q.peek());
334		checkEmpty(q);
#	Line 410 | Line 338 | public class LinkedTransferQueueTest ext
338		* element returns next element, or throws NoSuchElementException if empty
339		*/
340		public void testElement() throws InterruptedException {
341	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
341	>	LinkedTransferQueue<Item> q = populatedQueue(SIZE);
342		for (int i = 0; i < SIZE; ++i) {
343	<	assertEquals(i, (int) q.element());
344	<	assertEquals(i, (int) q.poll());
343	>	mustEqual(i, q.element());
344	>	mustEqual(i, q.poll());
345		}
346		try {
347		q.element();
#	Line 426 | Line 354 | public class LinkedTransferQueueTest ext
354		* remove removes next element, or throws NoSuchElementException if empty
355		*/
356		public void testRemove() throws InterruptedException {
357	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
357	>	LinkedTransferQueue<Item> q = populatedQueue(SIZE);
358		for (int i = 0; i < SIZE; ++i) {
359	<	assertEquals(i, (int) q.remove());
359	>	mustEqual(i, q.remove());
360		}
361		try {
362		q.remove();
#	Line 438 | Line 366 | public class LinkedTransferQueueTest ext
366		}
367
368		/**
441	–	* remove(x) removes x and returns true if present
442	–	*/
443	–	public void testRemoveElement() throws InterruptedException {
444	–	LinkedTransferQueue q = populatedQueue(SIZE);
445	–	for (int i = 1; i < SIZE; i += 2) {
446	–	assertTrue(q.remove(i));
447	–	}
448	–	for (int i = 0; i < SIZE; i += 2) {
449	–	assertTrue(q.remove(i));
450	–	assertFalse(q.remove(i + 1));
451	–	}
452	–	checkEmpty(q);
453	–	}
454	–
455	–	/**
369		* An add following remove(x) succeeds
370		*/
371		public void testRemoveElementAndAdd() throws InterruptedException {
372	<	LinkedTransferQueue q = new LinkedTransferQueue();
373	<	assertTrue(q.add(one));
374	<	assertTrue(q.add(two));
375	<	assertTrue(q.remove(one));
376	<	assertTrue(q.remove(two));
377	<	assertTrue(q.add(three));
378	<	assertTrue(q.take() == three);
372	>	LinkedTransferQueue<Item> q = new LinkedTransferQueue<>();
373	>	mustAdd(q, one);
374	>	mustAdd(q, two);
375	>	mustRemove(q, one);
376	>	mustRemove(q, two);
377	>	mustAdd(q, three);
378	>	mustEqual(q.take(), three);
379		}
380
381		/**
382		* contains(x) reports true when elements added but not yet removed
383		*/
384		public void testContains() {
385	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
385	>	LinkedTransferQueue<Item> q = populatedQueue(SIZE);
386		for (int i = 0; i < SIZE; ++i) {
387	<	assertTrue(q.contains(i));
388	<	assertEquals(i, (int) q.poll());
389	<	assertFalse(q.contains(i));
387	>	mustContain(q, i);
388	>	mustEqual(i, q.poll());
389	>	mustNotContain(q, i);
390		}
391		}
392
#	Line 481 | Line 394 | public class LinkedTransferQueueTest ext
394		* clear removes all elements
395		*/
396		public void testClear() throws InterruptedException {
397	<	LinkedTransferQueue q = populatedQueue(SIZE);
397	>	LinkedTransferQueue<Item> q = populatedQueue(SIZE);
398		q.clear();
399		checkEmpty(q);
400	<	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
400	>	mustEqual(Integer.MAX_VALUE, q.remainingCapacity());
401		q.add(one);
402		assertFalse(q.isEmpty());
403	<	assertEquals(1, q.size());
404	<	assertTrue(q.contains(one));
403	>	mustEqual(1, q.size());
404	>	mustContain(q, one);
405		q.clear();
406		checkEmpty(q);
407		}
#	Line 497 | Line 410 | public class LinkedTransferQueueTest ext
410		* containsAll(c) is true when c contains a subset of elements
411		*/
412		public void testContainsAll() {
413	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
414	<	LinkedTransferQueue<Integer> p = new LinkedTransferQueue<Integer>();
413	>	LinkedTransferQueue<Item> q = populatedQueue(SIZE);
414	>	LinkedTransferQueue<Item> p = new LinkedTransferQueue<>();
415		for (int i = 0; i < SIZE; ++i) {
416		assertTrue(q.containsAll(p));
417		assertFalse(p.containsAll(q));
418	<	p.add(i);
418	>	mustAdd(p, i);
419		}
420		assertTrue(p.containsAll(q));
421		}
#	Line 512 | Line 425 | public class LinkedTransferQueueTest ext
425		* if changed
426		*/
427		public void testRetainAll() {
428	<	LinkedTransferQueue q = populatedQueue(SIZE);
429	<	LinkedTransferQueue p = populatedQueue(SIZE);
428	>	LinkedTransferQueue<Item> q = populatedQueue(SIZE);
429	>	LinkedTransferQueue<Item> p = populatedQueue(SIZE);
430		for (int i = 0; i < SIZE; ++i) {
431		boolean changed = q.retainAll(p);
432		if (i == 0) {
#	Line 522 | Line 435 | public class LinkedTransferQueueTest ext
435		assertTrue(changed);
436		}
437		assertTrue(q.containsAll(p));
438	<	assertEquals(SIZE - i, q.size());
438	>	mustEqual(SIZE - i, q.size());
439		p.remove();
440		}
441		}
#	Line 533 | Line 446 | public class LinkedTransferQueueTest ext
446		*/
447		public void testRemoveAll() {
448		for (int i = 1; i < SIZE; ++i) {
449	<	LinkedTransferQueue q = populatedQueue(SIZE);
450	<	LinkedTransferQueue p = populatedQueue(i);
449	>	LinkedTransferQueue<Item> q = populatedQueue(SIZE);
450	>	LinkedTransferQueue<Item> p = populatedQueue(i);
451		assertTrue(q.removeAll(p));
452	<	assertEquals(SIZE - i, q.size());
452	>	mustEqual(SIZE - i, q.size());
453		for (int j = 0; j < i; ++j) {
454	<	assertFalse(q.contains(p.remove()));
454	>	mustNotContain(q, p.remove());
455		}
456		}
457		}
458
459		/**
460	<	* toArray() contains all elements
460	>	* toArray() contains all elements in FIFO order
461		*/
462	<	public void testToArray() throws InterruptedException {
463	<	LinkedTransferQueue q = populatedQueue(SIZE);
464	<	Object[] o = q.toArray();
465	<	for (int i = 0; i < o.length; i++) {
466	<	assertEquals(o[i], q.take());
467	<	}
468	<	}
556	<
557	<	/**
558	<	* toArray(a) contains all elements
559	<	*/
560	<	public void testToArray2() throws InterruptedException {
561	<	LinkedTransferQueue<Integer> q = populatedQueue(SIZE);
562	<	Integer[] ints = new Integer[SIZE];
563	<	ints = q.toArray(ints);
564	<	for (int i = 0; i < ints.length; i++) {
565	<	assertEquals(ints[i], q.take());
566	<	}
462	>	public void testToArray() {
463	>	LinkedTransferQueue<Item> q = populatedQueue(SIZE);
464	>	Object[] a = q.toArray();
465	>	assertSame(Object[].class, a.getClass());
466	>	for (Object o : a)
467	>	assertSame(o, q.poll());
468	>	assertTrue(q.isEmpty());
469		}
470
471		/**
472	<	* toArray(null) throws NullPointerException
472	>	* toArray(a) contains all elements in FIFO order
473		*/
474	<	public void testToArray_BadArg() {
475	<	try {
476	<	LinkedTransferQueue q = populatedQueue(SIZE);
477	<	Object o[] = q.toArray(null);
478	<	shouldThrow();
479	<	} catch (NullPointerException success) {}
474	>	public void testToArray2() {
475	>	LinkedTransferQueue<Item> q = populatedQueue(SIZE);
476	>	Item[] items = new Item[SIZE];
477	>	Item[] array = q.toArray(items);
478	>	assertSame(items, array);
479	>	for (Item o : items)
480	>	assertSame(o, q.poll());
481	>	assertTrue(q.isEmpty());
482		}
483
484		/**
485	<	* toArray(incompatible array type) throws CCE
485	>	* toArray(incompatible array type) throws ArrayStoreException
486		*/
487		public void testToArray1_BadArg() {
488	+	LinkedTransferQueue<Item> q = populatedQueue(SIZE);
489		try {
490	<	LinkedTransferQueue q = populatedQueue(SIZE);
586	<	Object o[] = q.toArray(new String[10]);
490	>	q.toArray(new String[10]);
491		shouldThrow();
492		} catch (ArrayStoreException success) {}
493		}
#	Line 592 | Line 496 | public class LinkedTransferQueueTest ext
496		* iterator iterates through all elements
497		*/
498		public void testIterator() throws InterruptedException {
499	<	LinkedTransferQueue q = populatedQueue(SIZE);
500	<	Iterator it = q.iterator();
501	<	int i = 0;
502	<	while (it.hasNext()) {
503	<	assertEquals(it.next(), i++);
504	<	}
505	<	assertEquals(i, SIZE);
499	>	LinkedTransferQueue<Item> q = populatedQueue(SIZE);
500	>	Iterator<? extends Item> it = q.iterator();
501	>	int i;
502	>	for (i = 0; it.hasNext(); i++)
503	>	mustContain(q, it.next());
504	>	mustEqual(i, SIZE);
505	>	assertIteratorExhausted(it);
506	>
507	>	it = q.iterator();
508	>	for (i = 0; it.hasNext(); i++)
509	>	mustEqual(it.next(), q.take());
510	>	mustEqual(i, SIZE);
511	>	assertIteratorExhausted(it);
512	>	}
513	>
514	>	/**
515	>	* iterator of empty collection has no elements
516	>	*/
517	>	public void testEmptyIterator() {
518	>	assertIteratorExhausted(new LinkedTransferQueue().iterator());
519		}
520
521		/**
522		* iterator.remove() removes current element
523		*/
524		public void testIteratorRemove() {
525	<	final LinkedTransferQueue q = new LinkedTransferQueue();
525	>	final LinkedTransferQueue<Item> q = new LinkedTransferQueue<>();
526		q.add(two);
527		q.add(one);
528		q.add(three);
529
530	<	Iterator it = q.iterator();
530	>	Iterator<? extends Item> it = q.iterator();
531		it.next();
532		it.remove();
533
534		it = q.iterator();
535	<	assertEquals(it.next(), one);
536	<	assertEquals(it.next(), three);
535	>	assertSame(it.next(), one);
536	>	assertSame(it.next(), three);
537		assertFalse(it.hasNext());
538		}
539
#	Line 624 | Line 541 | public class LinkedTransferQueueTest ext
541		* iterator ordering is FIFO
542		*/
543		public void testIteratorOrdering() {
544	<	final LinkedTransferQueue<Integer> q
545	<	= new LinkedTransferQueue<Integer>();
629	<	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
544	>	final LinkedTransferQueue<Item> q = new LinkedTransferQueue<>();
545	>	mustEqual(Integer.MAX_VALUE, q.remainingCapacity());
546		q.add(one);
547		q.add(two);
548		q.add(three);
549	<	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
549	>	mustEqual(Integer.MAX_VALUE, q.remainingCapacity());
550		int k = 0;
551	<	for (Integer n : q) {
552	<	assertEquals(++k, (int) n);
551	>	for (Item n : q) {
552	>	mustEqual(++k, n);
553		}
554	<	assertEquals(3, k);
554	>	mustEqual(3, k);
555		}
556
557		/**
558		* Modifications do not cause iterators to fail
559		*/
560		public void testWeaklyConsistentIteration() {
561	<	final LinkedTransferQueue q = new LinkedTransferQueue();
561	>	final LinkedTransferQueue<Item> q = new LinkedTransferQueue<>();
562		q.add(one);
563		q.add(two);
564		q.add(three);
565	<	for (Iterator it = q.iterator(); it.hasNext();) {
565	>	for (Iterator<? extends Item> it = q.iterator(); it.hasNext();) {
566		q.remove();
567		it.next();
568		}
569	<	assertEquals(0, q.size());
569	>	mustEqual(0, q.size());
570		}
571
572		/**
573		* toString contains toStrings of elements
574		*/
575		public void testToString() {
576	<	LinkedTransferQueue q = populatedQueue(SIZE);
576	>	LinkedTransferQueue<Item> q = populatedQueue(SIZE);
577		String s = q.toString();
578		for (int i = 0; i < SIZE; ++i) {
579	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
579	>	assertTrue(s.contains(String.valueOf(i)));
580		}
581		}
582
#	Line 668 | Line 584 | public class LinkedTransferQueueTest ext
584		* offer transfers elements across Executor tasks
585		*/
586		public void testOfferInExecutor() {
587	<	final LinkedTransferQueue q = new LinkedTransferQueue();
588	<	q.add(one);
589	<	q.add(two);
590	<	ExecutorService executor = Executors.newFixedThreadPool(2);
591	<
592	<	executor.execute(new CheckedRunnable() {
593	<	void realRun() {
594	<	threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS,
595	<	MILLISECONDS));
596	<	}});
597	<
598	<	executor.execute(new CheckedRunnable() {
683	<	void realRun() throws InterruptedException {
684	<	Thread.sleep(SMALL_DELAY_MS);
685	<	threadAssertEquals(one, q.take());
686	<	}});
587	>	final LinkedTransferQueue<Item> q = new LinkedTransferQueue<>();
588	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
589	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
590	>	try (PoolCleaner cleaner = cleaner(executor)) {
591	>
592	>	executor.execute(new CheckedRunnable() {
593	>	public void realRun() throws InterruptedException {
594	>	threadsStarted.await();
595	>	long startTime = System.nanoTime();
596	>	assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS));
597	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
598	>	}});
599
600	<	joinPool(executor);
600	>	executor.execute(new CheckedRunnable() {
601	>	public void realRun() throws InterruptedException {
602	>	threadsStarted.await();
603	>	assertSame(one, q.take());
604	>	checkEmpty(q);
605	>	}});
606	>	}
607		}
608
609		/**
610		* timed poll retrieves elements across Executor threads
611		*/
612		public void testPollInExecutor() {
613	<	final LinkedTransferQueue q = new LinkedTransferQueue();
614	<	ExecutorService executor = Executors.newFixedThreadPool(2);
615	<
616	<	executor.execute(new CheckedRunnable() {
617	<	void realRun() throws InterruptedException {
618	<	threadAssertNull(q.poll());
619	<	threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS,
620	<	MILLISECONDS));
621	<	threadAssertTrue(q.isEmpty());
622	<	}});
623	<
624	<	executor.execute(new CheckedRunnable() {
625	<	void realRun() throws InterruptedException {
626	<	Thread.sleep(SMALL_DELAY_MS);
709	<	q.put(one);
710	<	}});
613	>	final LinkedTransferQueue<Item> q = new LinkedTransferQueue<>();
614	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
615	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
616	>	try (PoolCleaner cleaner = cleaner(executor)) {
617	>
618	>	executor.execute(new CheckedRunnable() {
619	>	public void realRun() throws InterruptedException {
620	>	assertNull(q.poll());
621	>	threadsStarted.await();
622	>	long startTime = System.nanoTime();
623	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
624	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
625	>	checkEmpty(q);
626	>	}});
627
628	<	joinPool(executor);
628	>	executor.execute(new CheckedRunnable() {
629	>	public void realRun() throws InterruptedException {
630	>	threadsStarted.await();
631	>	q.put(one);
632	>	}});
633	>	}
634		}
635
636		/**
637	<	* A deserialized serialized queue has same elements in same order
637	>	* A deserialized/reserialized queue has same elements in same order
638		*/
639		public void testSerialization() throws Exception {
640	<	LinkedTransferQueue q = populatedQueue(SIZE);
641	<
721	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
722	<	ObjectOutputStream out
723	<	= new ObjectOutputStream(new BufferedOutputStream(bout));
724	<	out.writeObject(q);
725	<	out.close();
640	>	Queue<Item> x = populatedQueue(SIZE);
641	>	Queue<Item> y = serialClone(x);
642
643	<	ByteArrayInputStream bin
644	<	= new ByteArrayInputStream(bout.toByteArray());
645	<	ObjectInputStream in
646	<	= new ObjectInputStream(new BufferedInputStream(bin));
647	<	LinkedTransferQueue r = (LinkedTransferQueue) in.readObject();
648	<
649	<	assertEquals(q.size(), r.size());
734	<	while (!q.isEmpty()) {
735	<	assertEquals(q.remove(), r.remove());
643	>	assertNotSame(y, x);
644	>	mustEqual(x.size(), y.size());
645	>	mustEqual(x.toString(), y.toString());
646	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
647	>	while (!x.isEmpty()) {
648	>	assertFalse(y.isEmpty());
649	>	mustEqual(x.remove(), y.remove());
650		}
651	<	}
738	<
739	<	/**
740	<	* drainTo(null) throws NullPointerException
741	<	*/
742	<	public void testDrainToNull() {
743	<	LinkedTransferQueue q = populatedQueue(SIZE);
744	<	try {
745	<	q.drainTo(null);
746	<	shouldThrow();
747	<	} catch (NullPointerException success) {}
748	<	}
749	<
750	<	/**
751	<	* drainTo(this) throws IllegalArgumentException
752	<	*/
753	<	public void testDrainToSelf() {
754	<	LinkedTransferQueue q = populatedQueue(SIZE);
755	<	try {
756	<	q.drainTo(q);
757	<	shouldThrow();
758	<	} catch (IllegalArgumentException success) {}
651	>	assertTrue(y.isEmpty());
652		}
653
654		/**
655		* drainTo(c) empties queue into another collection c
656		*/
657		public void testDrainTo() {
658	<	LinkedTransferQueue q = populatedQueue(SIZE);
658	>	LinkedTransferQueue<Item> q = populatedQueue(SIZE);
659		ArrayList l = new ArrayList();
660		q.drainTo(l);
661	<	assertEquals(q.size(), 0);
662	<	assertEquals(l.size(), SIZE);
661	>	mustEqual(0, q.size());
662	>	mustEqual(SIZE, l.size());
663		for (int i = 0; i < SIZE; ++i) {
664	<	assertEquals(l.get(i), i);
664	>	mustEqual(i, l.get(i));
665		}
666		q.add(zero);
667		q.add(one);
668		assertFalse(q.isEmpty());
669	<	assertTrue(q.contains(zero));
670	<	assertTrue(q.contains(one));
669	>	mustContain(q, zero);
670	>	mustContain(q, one);
671		l.clear();
672		q.drainTo(l);
673	<	assertEquals(q.size(), 0);
674	<	assertEquals(l.size(), 2);
673	>	mustEqual(0, q.size());
674	>	mustEqual(2, l.size());
675		for (int i = 0; i < 2; ++i) {
676	<	assertEquals(l.get(i), i);
676	>	mustEqual(i, l.get(i));
677		}
678		}
679
#	Line 788 | Line 681 | public class LinkedTransferQueueTest ext
681		* drainTo(c) empties full queue, unblocking a waiting put.
682		*/
683		public void testDrainToWithActivePut() throws InterruptedException {
684	<	final LinkedTransferQueue q = populatedQueue(SIZE);
684	>	final LinkedTransferQueue<Item> q = populatedQueue(SIZE);
685		Thread t = newStartedThread(new CheckedRunnable() {
686	<	void realRun() {
687	<	q.put(SIZE + 1);
686	>	public void realRun() {
687	>	q.put(new Item(SIZE + 1));
688		}});
689		ArrayList l = new ArrayList();
690		q.drainTo(l);
691		assertTrue(l.size() >= SIZE);
692	<	for (int i = 0; i < SIZE; ++i) {
693	<	assertEquals(l.get(i), i);
694	<	}
802	<	t.join();
692	>	for (int i = 0; i < SIZE; ++i)
693	>	mustEqual(i, l.get(i));
694	>	awaitTermination(t);
695		assertTrue(q.size() + l.size() >= SIZE);
696		}
697
698		/**
699	<	* drainTo(null, n) throws NullPointerException
808	<	*/
809	<	public void testDrainToNullN() {
810	<	LinkedTransferQueue q = populatedQueue(SIZE);
811	<	try {
812	<	q.drainTo(null, SIZE);
813	<	shouldThrow();
814	<	} catch (NullPointerException success) {}
815	<	}
816	<
817	<	/**
818	<	* drainTo(this, n) throws IllegalArgumentException
819	<	*/
820	<	public void testDrainToSelfN() {
821	<	LinkedTransferQueue q = populatedQueue(SIZE);
822	<	try {
823	<	q.drainTo(q, SIZE);
824	<	shouldThrow();
825	<	} catch (IllegalArgumentException success) {}
826	<	}
827	<
828	<	/**
829	<	* drainTo(c, n) empties first max {n, size} elements of queue into c
699	>	* drainTo(c, n) empties first min(n, size) elements of queue into c
700		*/
701		public void testDrainToN() {
702	<	LinkedTransferQueue q = new LinkedTransferQueue();
702	>	LinkedTransferQueue<Item> q = new LinkedTransferQueue<>();
703		for (int i = 0; i < SIZE + 2; ++i) {
704		for (int j = 0; j < SIZE; j++) {
705	<	assertTrue(q.offer(j));
705	>	mustOffer(q, j);
706		}
707		ArrayList l = new ArrayList();
708		q.drainTo(l, i);
709		int k = (i < SIZE) ? i : SIZE;
710	<	assertEquals(l.size(), k);
711	<	assertEquals(q.size(), SIZE - k);
712	<	for (int j = 0; j < k; ++j) {
713	<	assertEquals(l.get(j), j);
714	<	}
845	<	while (q.poll() != null)
846	<	;
710	>	mustEqual(k, l.size());
711	>	mustEqual(SIZE - k, q.size());
712	>	for (int j = 0; j < k; ++j)
713	>	mustEqual(j, l.get(j));
714	>	do {} while (q.poll() != null);
715		}
716		}
717
#	Line 852 | Line 720 | public class LinkedTransferQueueTest ext
720		* offer(e) decrements the waiting consumer count
721		*/
722		public void testWaitingConsumer() throws InterruptedException {
723	<	final LinkedTransferQueue q = new LinkedTransferQueue();
724	<	assertEquals(q.getWaitingConsumerCount(), 0);
723	>	final LinkedTransferQueue<Item> q = new LinkedTransferQueue<>();
724	>	mustEqual(0, q.getWaitingConsumerCount());
725		assertFalse(q.hasWaitingConsumer());
726	+	final CountDownLatch threadStarted = new CountDownLatch(1);
727
728		Thread t = newStartedThread(new CheckedRunnable() {
729	<	void realRun() throws InterruptedException {
730	<	Thread.sleep(SMALL_DELAY_MS);
731	<	threadAssertTrue(q.hasWaitingConsumer());
732	<	threadAssertEquals(q.getWaitingConsumerCount(), 1);
733	<	threadAssertTrue(q.offer(new Object()));
734	<	threadAssertFalse(q.hasWaitingConsumer());
735	<	threadAssertEquals(q.getWaitingConsumerCount(), 0);
729	>	public void realRun() throws InterruptedException {
730	>	threadStarted.countDown();
731	>	long startTime = System.nanoTime();
732	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
733	>	mustEqual(0, q.getWaitingConsumerCount());
734	>	assertFalse(q.hasWaitingConsumer());
735	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
736		}});
737
738	<	assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) != null);
739	<	assertEquals(q.getWaitingConsumerCount(), 0);
738	>	threadStarted.await();
739	>	Callable<Boolean> oneConsumer = new Callable<>() {
740	>	public Boolean call() {
741	>	return q.hasWaitingConsumer()
742	>	&& q.getWaitingConsumerCount() == 1; }};
743	>	waitForThreadToEnterWaitState(t, oneConsumer);
744	>
745	>	assertTrue(q.offer(one));
746	>	mustEqual(0, q.getWaitingConsumerCount());
747		assertFalse(q.hasWaitingConsumer());
748	<	t.join();
748	>
749	>	awaitTermination(t);
750		}
751
752		/**
#	Line 877 | Line 754 | public class LinkedTransferQueueTest ext
754		*/
755		public void testTransfer1() throws InterruptedException {
756		try {
757	<	LinkedTransferQueue q = new LinkedTransferQueue();
757	>	LinkedTransferQueue<Item> q = new LinkedTransferQueue<>();
758		q.transfer(null);
759		shouldThrow();
760		} catch (NullPointerException success) {}
761		}
762
763		/**
764	<	* transfer waits until a poll occurs. The transfered element
765	<	* is returned by this associated poll.
764	>	* transfer waits until a poll occurs. The transferred element
765	>	* is returned by the associated poll.
766		*/
767		public void testTransfer2() throws InterruptedException {
768	<	final LinkedTransferQueue<Integer> q
769	<	= new LinkedTransferQueue<Integer>();
768	>	final LinkedTransferQueue<Item> q = new LinkedTransferQueue<>();
769	>	final CountDownLatch threadStarted = new CountDownLatch(1);
770
771		Thread t = newStartedThread(new CheckedRunnable() {
772	<	void realRun() throws InterruptedException {
773	<	q.transfer(SIZE);
774	<	threadAssertTrue(q.isEmpty());
772	>	public void realRun() throws InterruptedException {
773	>	threadStarted.countDown();
774	>	q.transfer(five);
775	>	checkEmpty(q);
776		}});
777
778	<	Thread.sleep(SHORT_DELAY_MS);
779	<	assertEquals(1, q.size());
780	<	assertEquals(SIZE, (int) q.poll());
781	<	assertTrue(q.isEmpty());
782	<	t.join();
778	>	threadStarted.await();
779	>	Callable<Boolean> oneElement = new Callable<>() {
780	>	public Boolean call() {
781	>	return !q.isEmpty() && q.size() == 1; }};
782	>	waitForThreadToEnterWaitState(t, oneElement);
783	>
784	>	assertSame(five, q.poll());
785	>	checkEmpty(q);
786	>	awaitTermination(t);
787		}
788
789		/**
790		* transfer waits until a poll occurs, and then transfers in fifo order
791		*/
792		public void testTransfer3() throws InterruptedException {
793	<	final LinkedTransferQueue<Integer> q
912	<	= new LinkedTransferQueue<Integer>();
793	>	final LinkedTransferQueue<Item> q = new LinkedTransferQueue<>();
794
795		Thread first = newStartedThread(new CheckedRunnable() {
796	<	void realRun() throws InterruptedException {
797	<	Integer i = SIZE + 1;
798	<	q.transfer(i);
799	<	threadAssertTrue(!q.contains(i));
919	<	threadAssertEquals(1, q.size());
796	>	public void realRun() throws InterruptedException {
797	>	q.transfer(four);
798	>	mustNotContain(q, four);
799	>	mustEqual(1, q.size());
800		}});
801
802		Thread interruptedThread = newStartedThread(
803		new CheckedInterruptedRunnable() {
804	<	void realRun() throws InterruptedException {
805	<	while (q.size() == 0)
804	>	public void realRun() throws InterruptedException {
805	>	while (q.isEmpty())
806		Thread.yield();
807	<	q.transfer(SIZE);
807	>	q.transfer(five);
808		}});
809
810		while (q.size() < 2)
811		Thread.yield();
812	<	assertEquals(2, q.size());
813	<	assertEquals(SIZE + 1, (int) q.poll());
812	>	mustEqual(2, q.size());
813	>	assertSame(four, q.poll());
814		first.join();
815	<	assertEquals(1, q.size());
815	>	mustEqual(1, q.size());
816		interruptedThread.interrupt();
817		interruptedThread.join();
818	<	assertEquals(0, q.size());
939	<	assertTrue(q.isEmpty());
818	>	checkEmpty(q);
819		}
820
821		/**
#	Line 944 | Line 823 | public class LinkedTransferQueueTest ext
823		* thread returns the element
824		*/
825		public void testTransfer4() throws InterruptedException {
826	<	final LinkedTransferQueue q = new LinkedTransferQueue();
826	>	final LinkedTransferQueue<Item> q = new LinkedTransferQueue<>();
827
828		Thread t = newStartedThread(new CheckedRunnable() {
829	<	void realRun() throws InterruptedException {
829	>	public void realRun() throws InterruptedException {
830		q.transfer(four);
831	<	threadAssertFalse(q.contains(four));
832	<	threadAssertEquals(three, q.poll());
831	>	mustNotContain(q, four);
832	>	assertSame(three, q.poll());
833		}});
834
835	<	Thread.sleep(SHORT_DELAY_MS);
835	>	while (q.isEmpty())
836	>	Thread.yield();
837	>	assertFalse(q.isEmpty());
838	>	mustEqual(1, q.size());
839		assertTrue(q.offer(three));
840	<	assertEquals(four, q.poll());
841	<	t.join();
840	>	assertSame(four, q.poll());
841	>	awaitTermination(t);
842		}
843
844		/**
845	<	* transfer waits until a take occurs. The transfered element
846	<	* is returned by this associated take.
845	>	* transfer waits until a take occurs. The transferred element
846	>	* is returned by the associated take.
847		*/
848		public void testTransfer5() throws InterruptedException {
849	<	final LinkedTransferQueue<Integer> q
968	<	= new LinkedTransferQueue<Integer>();
849	>	final LinkedTransferQueue<Item> q = new LinkedTransferQueue<>();
850
851		Thread t = newStartedThread(new CheckedRunnable() {
852	<	void realRun() throws InterruptedException {
853	<	q.transfer(SIZE);
852	>	public void realRun() throws InterruptedException {
853	>	q.transfer(four);
854		checkEmpty(q);
855		}});
856
857	<	Thread.sleep(SHORT_DELAY_MS);
858	<	assertEquals(SIZE, (int) q.take());
857	>	while (q.isEmpty())
858	>	Thread.yield();
859	>	assertFalse(q.isEmpty());
860	>	mustEqual(1, q.size());
861	>	assertSame(four, q.take());
862		checkEmpty(q);
863	<	t.join();
863	>	awaitTermination(t);
864		}
865
866		/**
867		* tryTransfer(null) throws NullPointerException
868		*/
869		public void testTryTransfer1() {
870	+	final LinkedTransferQueue<Item> q = new LinkedTransferQueue<>();
871		try {
987	–	final LinkedTransferQueue q = new LinkedTransferQueue();
872		q.tryTransfer(null);
873		shouldThrow();
874		} catch (NullPointerException success) {}
#	Line 995 | Line 879 | public class LinkedTransferQueueTest ext
879		* consumers waiting to poll or take.
880		*/
881		public void testTryTransfer2() throws InterruptedException {
882	<	final LinkedTransferQueue q = new LinkedTransferQueue();
882	>	final LinkedTransferQueue<Object> q = new LinkedTransferQueue<>();
883		assertFalse(q.tryTransfer(new Object()));
884		assertFalse(q.hasWaitingConsumer());
885		checkEmpty(q);
#	Line 1007 | Line 891 | public class LinkedTransferQueueTest ext
891		*/
892		public void testTryTransfer3() throws InterruptedException {
893		final Object hotPotato = new Object();
894	<	final LinkedTransferQueue q = new LinkedTransferQueue();
894	>	final LinkedTransferQueue<Object> q = new LinkedTransferQueue<>();
895
896		Thread t = newStartedThread(new CheckedRunnable() {
897	<	void realRun() {
897	>	public void realRun() {
898		while (! q.hasWaitingConsumer())
899		Thread.yield();
900	<	threadAssertTrue(q.hasWaitingConsumer());
901	<	threadAssertTrue(q.isEmpty());
902	<	threadAssertTrue(q.size() == 0);
1019	<	threadAssertTrue(q.tryTransfer(hotPotato));
900	>	assertTrue(q.hasWaitingConsumer());
901	>	checkEmpty(q);
902	>	assertTrue(q.tryTransfer(hotPotato));
903		}});
904
905	<	assertTrue(q.poll(MEDIUM_DELAY_MS, MILLISECONDS) == hotPotato);
905	>	long startTime = System.nanoTime();
906	>	assertSame(hotPotato, q.poll(LONG_DELAY_MS, MILLISECONDS));
907	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
908		checkEmpty(q);
909	<	t.join();
909	>	awaitTermination(t);
910		}
911
912		/**
#	Line 1030 | Line 915 | public class LinkedTransferQueueTest ext
915		*/
916		public void testTryTransfer4() throws InterruptedException {
917		final Object hotPotato = new Object();
918	<	final LinkedTransferQueue q = new LinkedTransferQueue();
918	>	final LinkedTransferQueue<Object> q = new LinkedTransferQueue<>();
919
920		Thread t = newStartedThread(new CheckedRunnable() {
921	<	void realRun() {
921	>	public void realRun() {
922		while (! q.hasWaitingConsumer())
923		Thread.yield();
924	<	threadAssertTrue(q.hasWaitingConsumer());
925	<	threadAssertTrue(q.isEmpty());
926	<	threadAssertTrue(q.size() == 0);
1042	<	threadAssertTrue(q.tryTransfer(hotPotato));
924	>	assertTrue(q.hasWaitingConsumer());
925	>	checkEmpty(q);
926	>	assertTrue(q.tryTransfer(hotPotato));
927		}});
928
929	<	assertTrue(q.take() == hotPotato);
929	>	assertSame(q.take(), hotPotato);
930		checkEmpty(q);
931	<	t.join();
931	>	awaitTermination(t);
932		}
933
934		/**
935	<	* tryTransfer waits the amount given if interrupted, and
1052	<	* throws interrupted exception
935	>	* tryTransfer blocks interruptibly if no takers
936		*/
937		public void testTryTransfer5() throws InterruptedException {
938	<	final LinkedTransferQueue q = new LinkedTransferQueue();
938	>	final LinkedTransferQueue<Object> q = new LinkedTransferQueue<>();
939	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
940	>	assertTrue(q.isEmpty());
941
942	<	Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() {
943	<	void realRun() throws InterruptedException {
944	<	q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
942	>	Thread t = newStartedThread(new CheckedRunnable() {
943	>	public void realRun() throws InterruptedException {
944	>	Thread.currentThread().interrupt();
945	>	try {
946	>	q.tryTransfer(new Object(), randomTimeout(), randomTimeUnit());
947	>	shouldThrow();
948	>	} catch (InterruptedException success) {}
949	>	assertFalse(Thread.interrupted());
950	>
951	>	pleaseInterrupt.countDown();
952	>	try {
953	>	q.tryTransfer(new Object(), LONGER_DELAY_MS, MILLISECONDS);
954	>	shouldThrow();
955	>	} catch (InterruptedException success) {}
956	>	assertFalse(Thread.interrupted());
957		}});
958
959	<	Thread.sleep(SMALL_DELAY_MS);
960	<	toInterrupt.interrupt();
961	<	toInterrupt.join();
959	>	await(pleaseInterrupt);
960	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
961	>	t.interrupt();
962	>	awaitTermination(t);
963	>	checkEmpty(q);
964		}
965
966		/**
967	<	* tryTransfer gives up after the timeout and return false
967	>	* tryTransfer gives up after the timeout and returns false
968		*/
969		public void testTryTransfer6() throws InterruptedException {
970	<	final LinkedTransferQueue q = new LinkedTransferQueue();
970	>	final LinkedTransferQueue<Object> q = new LinkedTransferQueue<>();
971
972		Thread t = newStartedThread(new CheckedRunnable() {
973	<	void realRun() throws InterruptedException {
974	<	threadAssertFalse
975	<	(q.tryTransfer(new Object(),
976	<	SHORT_DELAY_MS, MILLISECONDS));
973	>	public void realRun() throws InterruptedException {
974	>	long startTime = System.nanoTime();
975	>	assertFalse(q.tryTransfer(new Object(),
976	>	timeoutMillis(), MILLISECONDS));
977	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
978	>	checkEmpty(q);
979		}});
980
981	<	Thread.sleep(SMALL_DELAY_MS);
981	>	awaitTermination(t);
982		checkEmpty(q);
1082	–	t.join();
983		}
984
985		/**
#	Line 1087 | Line 987 | public class LinkedTransferQueueTest ext
987		* before transfering to a poll or take
988		*/
989		public void testTryTransfer7() throws InterruptedException {
990	<	final LinkedTransferQueue q = new LinkedTransferQueue();
990	>	final LinkedTransferQueue<Item> q = new LinkedTransferQueue<>();
991		assertTrue(q.offer(four));
992
993		Thread t = newStartedThread(new CheckedRunnable() {
994	<	void realRun() throws InterruptedException {
995	<	threadAssertTrue(q.tryTransfer(five,
996	<	MEDIUM_DELAY_MS, MILLISECONDS));
997	<	threadAssertTrue(q.isEmpty());
994	>	public void realRun() throws InterruptedException {
995	>	long startTime = System.nanoTime();
996	>	assertTrue(q.tryTransfer(five, LONG_DELAY_MS, MILLISECONDS));
997	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
998	>	checkEmpty(q);
999		}});
1000
1001	<	Thread.sleep(SHORT_DELAY_MS);
1002	<	assertEquals(2, q.size());
1003	<	assertEquals(four, q.poll());
1004	<	assertEquals(five, q.poll());
1001	>	while (q.size() != 2)
1002	>	Thread.yield();
1003	>	mustEqual(2, q.size());
1004	>	assertSame(four, q.poll());
1005	>	assertSame(five, q.poll());
1006		checkEmpty(q);
1007	<	t.join();
1007	>	awaitTermination(t);
1008		}
1009
1010		/**
1011	<	* tryTransfer attempts to enqueue into the q and fails returning
1012	<	* false not enqueueing and the successive poll is null
1011	>	* tryTransfer attempts to enqueue into the queue and fails
1012	>	* returning false not enqueueing and the successive poll is null
1013		*/
1014		public void testTryTransfer8() throws InterruptedException {
1015	<	final LinkedTransferQueue q = new LinkedTransferQueue();
1015	>	final LinkedTransferQueue<Item> q = new LinkedTransferQueue<>();
1016		assertTrue(q.offer(four));
1017	<	assertEquals(1, q.size());
1018	<	assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS));
1019	<	assertEquals(1, q.size());
1020	<	assertEquals(four, q.poll());
1017	>	mustEqual(1, q.size());
1018	>	long startTime = System.nanoTime();
1019	>	assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS));
1020	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
1021	>	mustEqual(1, q.size());
1022	>	assertSame(four, q.poll());
1023		assertNull(q.poll());
1024		checkEmpty(q);
1025		}
1026
1027	<	private LinkedTransferQueue<Integer> populatedQueue(int n) {
1028	<	LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
1029	<	assertTrue(q.isEmpty());
1027	>	private LinkedTransferQueue<Item> populatedQueue(int n) {
1028	>	LinkedTransferQueue<Item> q = new LinkedTransferQueue<>();
1029	>	checkEmpty(q);
1030		for (int i = 0; i < n; i++) {
1031	<	assertEquals(i, q.size());
1032	<	assertTrue(q.offer(i));
1033	<	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
1031	>	mustEqual(i, q.size());
1032	>	mustOffer(q, i);
1033	>	mustEqual(Integer.MAX_VALUE, q.remainingCapacity());
1034		}
1035		assertFalse(q.isEmpty());
1036		return q;
1037		}
1038	+
1039	+	/**
1040	+	* remove(null), contains(null) always return false
1041	+	*/
1042	+	public void testNeverContainsNull() {
1043	+	Collection<?>[] qs = {
1044	+	new LinkedTransferQueue<>(),
1045	+	populatedQueue(2),
1046	+	};
1047	+
1048	+	for (Collection<?> q : qs) {
1049	+	assertFalse(q.contains(null));
1050	+	assertFalse(q.remove(null));
1051	+	}
1052	+	}
1053		}

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