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Comparing jsr166/src/test/tck/PriorityBlockingQueueTest.java (file contents):
Revision 1.74 by jsr166, Sat May 13 22:49:01 2017 UTC vs.
Revision 1.87 by jsr166, Wed Jan 27 02:55:18 2021 UTC

#	Line 20 | Line 20 | import java.util.concurrent.CountDownLat
20		import java.util.concurrent.Executors;
21		import java.util.concurrent.ExecutorService;
22		import java.util.concurrent.PriorityBlockingQueue;
23	+	import java.util.concurrent.ThreadLocalRandom;
24
25		import junit.framework.Test;
26
#	Line 33 | Line 34 | public class PriorityBlockingQueueTest e
34
35		public static class InitialCapacity extends BlockingQueueTest {
36		protected BlockingQueue emptyCollection() {
37	<	return new PriorityBlockingQueue(SIZE);
37	>	ThreadLocalRandom rnd = ThreadLocalRandom.current();
38	>	int initialCapacity = rnd.nextInt(1, SIZE);
39	>	return new PriorityBlockingQueue(initialCapacity);
40		}
41		}
42
#	Line 44 | Line 47 | public class PriorityBlockingQueueTest e
47		public static Test suite() {
48		class Implementation implements CollectionImplementation {
49		public Class<?> klazz() { return PriorityBlockingQueue.class; }
50	<	public Collection emptyCollection() { return new PriorityBlockingQueue(); }
51	<	public Object makeElement(int i) { return i; }
50	>	public Collection emptyCollection() {
51	>	return new PriorityBlockingQueue();
52	>	}
53	>	public Object makeElement(int i) { return JSR166TestCase.itemFor(i); }
54		public boolean isConcurrent() { return true; }
55		public boolean permitsNulls() { return false; }
56		}
57	<	return newTestSuite(PriorityBlockingQueueTest.class,
58	<	new Generic().testSuite(),
59	<	new InitialCapacity().testSuite(),
60	<	CollectionTest.testSuite(new Implementation()));
57	>	class ComparatorImplementation implements CollectionImplementation {
58	>	public Class<?> klazz() { return PriorityBlockingQueue.class; }
59	>	@SuppressWarnings("unchecked")
60	>	public Collection emptyCollection() {
61	>	ThreadLocalRandom rnd = ThreadLocalRandom.current();
62	>	int initialCapacity = rnd.nextInt(1, 10);
63	>	return new PriorityBlockingQueue(
64	>	initialCapacity, new MyReverseComparator());
65	>	}
66	>	public Object makeElement(int i) { return JSR166TestCase.itemFor(i); }
67	>	public boolean isConcurrent() { return true; }
68	>	public boolean permitsNulls() { return false; }
69	>	}
70	>	return newTestSuite(
71	>	PriorityBlockingQueueTest.class,
72	>	new Generic().testSuite(),
73	>	new InitialCapacity().testSuite(),
74	>	CollectionTest.testSuite(new Implementation()),
75	>	CollectionTest.testSuite(new ComparatorImplementation()));
76		}
77
78		/** Sample Comparator */
79	<	static class MyReverseComparator implements Comparator {
79	>	static class MyReverseComparator implements Comparator, java.io.Serializable {
80	>	@SuppressWarnings("unchecked")
81		public int compare(Object x, Object y) {
82		return ((Comparable)y).compareTo(x);
83		}
#	Line 64 | Line 85 | public class PriorityBlockingQueueTest e
85
86		/**
87		* Returns a new queue of given size containing consecutive
88	<	* Integers 0 ... n - 1.
88	>	* Items 0 ... n - 1.
89		*/
90	<	private static PriorityBlockingQueue<Integer> populatedQueue(int n) {
91	<	PriorityBlockingQueue<Integer> q =
71	<	new PriorityBlockingQueue<Integer>(n);
90	>	private static PriorityBlockingQueue<Item> populatedQueue(int n) {
91	>	PriorityBlockingQueue<Item> q = new PriorityBlockingQueue<>(n);
92		assertTrue(q.isEmpty());
93		for (int i = n - 1; i >= 0; i -= 2)
94	<	assertTrue(q.offer(new Integer(i)));
94	>	mustOffer(q, i);
95		for (int i = (n & 1); i < n; i += 2)
96	<	assertTrue(q.offer(new Integer(i)));
96	>	mustOffer(q, i);
97		assertFalse(q.isEmpty());
98	<	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
99	<	assertEquals(n, q.size());
100	<	assertEquals((Integer) 0, q.peek());
98	>	mustEqual(Integer.MAX_VALUE, q.remainingCapacity());
99	>	mustEqual(n, q.size());
100	>	mustEqual(0, q.peek());
101		return q;
102		}
103
#	Line 85 | Line 105 | public class PriorityBlockingQueueTest e
105		* A new queue has unbounded capacity
106		*/
107		public void testConstructor1() {
108	<	assertEquals(Integer.MAX_VALUE,
109	<	new PriorityBlockingQueue(SIZE).remainingCapacity());
108	>	mustEqual(Integer.MAX_VALUE,
109	>	new PriorityBlockingQueue<Item>(SIZE).remainingCapacity());
110		}
111
112		/**
113	<	* Constructor throws IAE if capacity argument nonpositive
113	>	* Constructor throws IllegalArgumentException if capacity argument nonpositive
114		*/
115		public void testConstructor2() {
116		try {
117	<	new PriorityBlockingQueue(0);
117	>	new PriorityBlockingQueue<Item>(0);
118		shouldThrow();
119		} catch (IllegalArgumentException success) {}
120		}
#	Line 104 | Line 124 | public class PriorityBlockingQueueTest e
124		*/
125		public void testConstructor3() {
126		try {
127	<	new PriorityBlockingQueue(null);
127	>	new PriorityBlockingQueue<Item>(null);
128		shouldThrow();
129		} catch (NullPointerException success) {}
130		}
#	Line 113 | Line 133 | public class PriorityBlockingQueueTest e
133		* Initializing from Collection of null elements throws NPE
134		*/
135		public void testConstructor4() {
136	<	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
136	>	Collection<Item> elements = Arrays.asList(new Item[SIZE]);
137		try {
138	<	new PriorityBlockingQueue(elements);
138	>	new PriorityBlockingQueue<Item>(elements);
139		shouldThrow();
140		} catch (NullPointerException success) {}
141		}
#	Line 124 | Line 144 | public class PriorityBlockingQueueTest e
144		* Initializing from Collection with some null elements throws NPE
145		*/
146		public void testConstructor5() {
147	<	Integer[] ints = new Integer[SIZE];
148	<	for (int i = 0; i < SIZE - 1; ++i)
129	<	ints[i] = i;
130	<	Collection<Integer> elements = Arrays.asList(ints);
147	>	Item[] items = new Item[2]; items[0] = zero;
148	>	Collection<Item> elements = Arrays.asList(items);
149		try {
150	<	new PriorityBlockingQueue(elements);
150	>	new PriorityBlockingQueue<Item>(elements);
151		shouldThrow();
152		} catch (NullPointerException success) {}
153		}
#	Line 138 | Line 156 | public class PriorityBlockingQueueTest e
156		* Queue contains all elements of collection used to initialize
157		*/
158		public void testConstructor6() {
159	<	Integer[] ints = new Integer[SIZE];
160	<	for (int i = 0; i < SIZE; ++i)
143	<	ints[i] = i;
144	<	PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
159	>	Item[] items = defaultItems;
160	>	PriorityBlockingQueue<Item> q = new PriorityBlockingQueue<>(Arrays.asList(items));
161		for (int i = 0; i < SIZE; ++i)
162	<	assertEquals(ints[i], q.poll());
162	>	mustEqual(items[i], q.poll());
163		}
164
165		/**
#	Line 151 | Line 167 | public class PriorityBlockingQueueTest e
167		*/
168		public void testConstructor7() {
169		MyReverseComparator cmp = new MyReverseComparator();
170	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE, cmp);
171	<	assertEquals(cmp, q.comparator());
172	<	Integer[] ints = new Integer[SIZE];
173	<	for (int i = 0; i < SIZE; ++i)
174	<	ints[i] = new Integer(i);
159	<	q.addAll(Arrays.asList(ints));
170	>	@SuppressWarnings("unchecked")
171	>	PriorityBlockingQueue<Item> q = new PriorityBlockingQueue<>(SIZE, cmp);
172	>	mustEqual(cmp, q.comparator());
173	>	Item[] items = defaultItems;
174	>	q.addAll(Arrays.asList(items));
175		for (int i = SIZE - 1; i >= 0; --i)
176	<	assertEquals(ints[i], q.poll());
176	>	mustEqual(items[i], q.poll());
177		}
178
179		/**
180		* isEmpty is true before add, false after
181		*/
182		public void testEmpty() {
183	<	PriorityBlockingQueue q = new PriorityBlockingQueue(2);
183	>	PriorityBlockingQueue<Item> q = new PriorityBlockingQueue<>(2);
184		assertTrue(q.isEmpty());
185	<	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
185	>	mustEqual(Integer.MAX_VALUE, q.remainingCapacity());
186		q.add(one);
187		assertFalse(q.isEmpty());
188		q.add(two);
#	Line 180 | Line 195 | public class PriorityBlockingQueueTest e
195		* remainingCapacity() always returns Integer.MAX_VALUE
196		*/
197		public void testRemainingCapacity() {
198	<	BlockingQueue q = populatedQueue(SIZE);
198	>	BlockingQueue<Item> q = populatedQueue(SIZE);
199		for (int i = 0; i < SIZE; ++i) {
200	<	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
201	<	assertEquals(SIZE - i, q.size());
202	<	assertEquals(i, q.remove());
200	>	mustEqual(Integer.MAX_VALUE, q.remainingCapacity());
201	>	mustEqual(SIZE - i, q.size());
202	>	mustEqual(i, q.remove());
203		}
204		for (int i = 0; i < SIZE; ++i) {
205	<	assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
206	<	assertEquals(i, q.size());
207	<	assertTrue(q.add(i));
205	>	mustEqual(Integer.MAX_VALUE, q.remainingCapacity());
206	>	mustEqual(i, q.size());
207	>	mustAdd(q, i);
208		}
209		}
210
#	Line 197 | Line 212 | public class PriorityBlockingQueueTest e
212		* Offer of comparable element succeeds
213		*/
214		public void testOffer() {
215	<	PriorityBlockingQueue q = new PriorityBlockingQueue(1);
215	>	PriorityBlockingQueue<Item> q = new PriorityBlockingQueue<>(1);
216		assertTrue(q.offer(zero));
217		assertTrue(q.offer(one));
218		}
#	Line 206 | Line 221 | public class PriorityBlockingQueueTest e
221		* Offer of non-Comparable throws CCE
222		*/
223		public void testOfferNonComparable() {
224	<	PriorityBlockingQueue q = new PriorityBlockingQueue(1);
224	>	PriorityBlockingQueue<Object> q = new PriorityBlockingQueue<>(1);
225		try {
226		q.offer(new Object());
227		shouldThrow();
228		} catch (ClassCastException success) {
229		assertTrue(q.isEmpty());
230	<	assertEquals(0, q.size());
230	>	mustEqual(0, q.size());
231		assertNull(q.poll());
232		}
233		}
#	Line 221 | Line 236 | public class PriorityBlockingQueueTest e
236		* add of comparable succeeds
237		*/
238		public void testAdd() {
239	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
239	>	PriorityBlockingQueue<Item> q = new PriorityBlockingQueue<>(SIZE);
240		for (int i = 0; i < SIZE; ++i) {
241	<	assertEquals(i, q.size());
242	<	assertTrue(q.add(new Integer(i)));
241	>	mustEqual(i, q.size());
242	>	mustAdd(q, i);
243		}
244		}
245
246		/**
247	<	* addAll(this) throws IAE
247	>	* addAll(this) throws IllegalArgumentException
248		*/
249		public void testAddAllSelf() {
250	<	PriorityBlockingQueue q = populatedQueue(SIZE);
250	>	PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
251		try {
252		q.addAll(q);
253		shouldThrow();
#	Line 244 | Line 259 | public class PriorityBlockingQueueTest e
259		* possibly adding some elements
260		*/
261		public void testAddAll3() {
262	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
263	<	Integer[] ints = new Integer[SIZE];
264	<	for (int i = 0; i < SIZE - 1; ++i)
250	<	ints[i] = new Integer(i);
262	>	PriorityBlockingQueue<Item> q = new PriorityBlockingQueue<>(SIZE);
263	>	Item[] items = new Item[2];
264	>	items[0] = zero;
265		try {
266	<	q.addAll(Arrays.asList(ints));
266	>	q.addAll(Arrays.asList(items));
267		shouldThrow();
268		} catch (NullPointerException success) {}
269		}
#	Line 258 | Line 272 | public class PriorityBlockingQueueTest e
272		* Queue contains all elements of successful addAll
273		*/
274		public void testAddAll5() {
275	<	Integer[] empty = new Integer[0];
276	<	Integer[] ints = new Integer[SIZE];
277	<	for (int i = SIZE - 1; i >= 0; --i)
264	<	ints[i] = new Integer(i);
265	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
275	>	Item[] empty = new Item[0];
276	>	Item[] items = defaultItems;
277	>	PriorityBlockingQueue<Item> q = new PriorityBlockingQueue<>(SIZE);
278		assertFalse(q.addAll(Arrays.asList(empty)));
279	<	assertTrue(q.addAll(Arrays.asList(ints)));
279	>	assertTrue(q.addAll(Arrays.asList(items)));
280		for (int i = 0; i < SIZE; ++i)
281	<	assertEquals(ints[i], q.poll());
281	>	mustEqual(items[i], q.poll());
282		}
283
284		/**
285		* all elements successfully put are contained
286		*/
287		public void testPut() {
288	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
288	>	PriorityBlockingQueue<Item> q = new PriorityBlockingQueue<>(SIZE);
289		for (int i = 0; i < SIZE; ++i) {
290	<	Integer x = new Integer(i);
290	>	Item x = itemFor(i);
291		q.put(x);
292	<	assertTrue(q.contains(x));
292	>	mustContain(q, x);
293		}
294	<	assertEquals(SIZE, q.size());
294	>	mustEqual(SIZE, q.size());
295		}
296
297		/**
298		* put doesn't block waiting for take
299		*/
300		public void testPutWithTake() throws InterruptedException {
301	<	final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
301	>	final PriorityBlockingQueue<Item> q = new PriorityBlockingQueue<>(2);
302		final int size = 4;
303		Thread t = newStartedThread(new CheckedRunnable() {
304		public void realRun() {
305		for (int i = 0; i < size; i++)
306	<	q.put(new Integer(0));
306	>	q.put(zero);
307		}});
308
309		awaitTermination(t);
310	<	assertEquals(size, q.size());
310	>	mustEqual(size, q.size());
311		q.take();
312		}
313
314		/**
315	<	* timed offer does not time out
315	>	* Queue is unbounded, so timed offer never times out
316		*/
317	<	public void testTimedOffer() throws InterruptedException {
318	<	final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
317	>	public void testTimedOffer() {
318	>	final PriorityBlockingQueue<Item> q = new PriorityBlockingQueue<>(2);
319		Thread t = newStartedThread(new CheckedRunnable() {
320		public void realRun() {
321	<	q.put(new Integer(0));
322	<	q.put(new Integer(0));
323	<	assertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, MILLISECONDS));
324	<	assertTrue(q.offer(new Integer(0), LONG_DELAY_MS, MILLISECONDS));
321	>	q.put(one);
322	>	q.put(two);
323	>	assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
324	>	assertTrue(q.offer(zero, LONG_DELAY_MS, MILLISECONDS));
325		}});
326
327		awaitTermination(t);
#	Line 319 | Line 331 | public class PriorityBlockingQueueTest e
331		* take retrieves elements in priority order
332		*/
333		public void testTake() throws InterruptedException {
334	<	PriorityBlockingQueue q = populatedQueue(SIZE);
334	>	PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
335		for (int i = 0; i < SIZE; ++i) {
336	<	assertEquals(i, q.take());
336	>	mustEqual(i, q.take());
337		}
338		}
339
#	Line 329 | Line 341 | public class PriorityBlockingQueueTest e
341		* Take removes existing elements until empty, then blocks interruptibly
342		*/
343		public void testBlockingTake() throws InterruptedException {
344	<	final PriorityBlockingQueue q = populatedQueue(SIZE);
344	>	final PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
345		final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
346		Thread t = newStartedThread(new CheckedRunnable() {
347		public void realRun() throws InterruptedException {
348	<	for (int i = 0; i < SIZE; i++) assertEquals(i, q.take());
348	>	for (int i = 0; i < SIZE; i++) mustEqual(i, q.take());
349
350		Thread.currentThread().interrupt();
351		try {
#	Line 351 | Line 363 | public class PriorityBlockingQueueTest e
363		}});
364
365		await(pleaseInterrupt);
366	<	assertThreadBlocks(t, Thread.State.WAITING);
366	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
367		t.interrupt();
368		awaitTermination(t);
369		}
#	Line 360 | Line 372 | public class PriorityBlockingQueueTest e
372		* poll succeeds unless empty
373		*/
374		public void testPoll() {
375	<	PriorityBlockingQueue q = populatedQueue(SIZE);
375	>	PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
376		for (int i = 0; i < SIZE; ++i) {
377	<	assertEquals(i, q.poll());
377	>	mustEqual(i, q.poll());
378		}
379		assertNull(q.poll());
380		}
#	Line 371 | Line 383 | public class PriorityBlockingQueueTest e
383		* timed poll with zero timeout succeeds when non-empty, else times out
384		*/
385		public void testTimedPoll0() throws InterruptedException {
386	<	PriorityBlockingQueue q = populatedQueue(SIZE);
386	>	PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
387		for (int i = 0; i < SIZE; ++i) {
388	<	assertEquals(i, q.poll(0, MILLISECONDS));
388	>	mustEqual(i, q.poll(0, MILLISECONDS));
389		}
390		assertNull(q.poll(0, MILLISECONDS));
391		}
#	Line 382 | Line 394 | public class PriorityBlockingQueueTest e
394		* timed poll with nonzero timeout succeeds when non-empty, else times out
395		*/
396		public void testTimedPoll() throws InterruptedException {
397	<	PriorityBlockingQueue<Integer> q = populatedQueue(SIZE);
397	>	PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
398		for (int i = 0; i < SIZE; ++i) {
399		long startTime = System.nanoTime();
400	<	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
400	>	mustEqual(i, q.poll(LONG_DELAY_MS, MILLISECONDS));
401		assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
402		}
403		long startTime = System.nanoTime();
#	Line 399 | Line 411 | public class PriorityBlockingQueueTest e
411		* returning timeout status
412		*/
413		public void testInterruptedTimedPoll() throws InterruptedException {
414	<	final BlockingQueue<Integer> q = populatedQueue(SIZE);
415	<	final CountDownLatch aboutToWait = new CountDownLatch(1);
414	>	final BlockingQueue<Item> q = populatedQueue(SIZE);
415	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
416		Thread t = newStartedThread(new CheckedRunnable() {
417		public void realRun() throws InterruptedException {
418	<	long startTime = System.nanoTime();
419	<	for (int i = 0; i < SIZE; ++i) {
420	<	assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
421	<	}
410	<	aboutToWait.countDown();
418	>	for (int i = 0; i < SIZE; i++)
419	>	mustEqual(i, q.poll(LONG_DELAY_MS, MILLISECONDS));
420	>
421	>	Thread.currentThread().interrupt();
422		try {
423	<	q.poll(LONG_DELAY_MS, MILLISECONDS);
423	>	q.poll(randomTimeout(), randomTimeUnit());
424		shouldThrow();
425	<	} catch (InterruptedException success) {
426	<	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
427	<	}
425	>	} catch (InterruptedException success) {}
426	>	assertFalse(Thread.interrupted());
427	>
428	>	pleaseInterrupt.countDown();
429	>	try {
430	>	q.poll(LONGER_DELAY_MS, MILLISECONDS);
431	>	shouldThrow();
432	>	} catch (InterruptedException success) {}
433	>	assertFalse(Thread.interrupted());
434		}});
435
436	<	await(aboutToWait);
437	<	assertThreadBlocks(t, Thread.State.TIMED_WAITING);
436	>	await(pleaseInterrupt);
437	>	if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
438		t.interrupt();
439		awaitTermination(t);
440		}
#	Line 426 | Line 443 | public class PriorityBlockingQueueTest e
443		* peek returns next element, or null if empty
444		*/
445		public void testPeek() {
446	<	PriorityBlockingQueue q = populatedQueue(SIZE);
446	>	PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
447		for (int i = 0; i < SIZE; ++i) {
448	<	assertEquals(i, q.peek());
449	<	assertEquals(i, q.poll());
448	>	mustEqual(i, q.peek());
449	>	mustEqual(i, q.poll());
450		assertTrue(q.peek() == null ||
451		!q.peek().equals(i));
452		}
#	Line 440 | Line 457 | public class PriorityBlockingQueueTest e
457		* element returns next element, or throws NSEE if empty
458		*/
459		public void testElement() {
460	<	PriorityBlockingQueue q = populatedQueue(SIZE);
460	>	PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
461		for (int i = 0; i < SIZE; ++i) {
462	<	assertEquals(i, q.element());
463	<	assertEquals(i, q.poll());
462	>	mustEqual(i, q.element());
463	>	mustEqual(i, q.poll());
464		}
465		try {
466		q.element();
#	Line 455 | Line 472 | public class PriorityBlockingQueueTest e
472		* remove removes next element, or throws NSEE if empty
473		*/
474		public void testRemove() {
475	<	PriorityBlockingQueue q = populatedQueue(SIZE);
475	>	PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
476		for (int i = 0; i < SIZE; ++i) {
477	<	assertEquals(i, q.remove());
477	>	mustEqual(i, q.remove());
478		}
479		try {
480		q.remove();
#	Line 469 | Line 486 | public class PriorityBlockingQueueTest e
486		* contains(x) reports true when elements added but not yet removed
487		*/
488		public void testContains() {
489	<	PriorityBlockingQueue q = populatedQueue(SIZE);
489	>	PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
490		for (int i = 0; i < SIZE; ++i) {
491	<	assertTrue(q.contains(new Integer(i)));
491	>	mustContain(q, i);
492		q.poll();
493	<	assertFalse(q.contains(new Integer(i)));
493	>	mustNotContain(q, i);
494		}
495		}
496
#	Line 481 | Line 498 | public class PriorityBlockingQueueTest e
498		* clear removes all elements
499		*/
500		public void testClear() {
501	<	PriorityBlockingQueue q = populatedQueue(SIZE);
501	>	PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
502		q.clear();
503		assertTrue(q.isEmpty());
504	<	assertEquals(0, q.size());
504	>	mustEqual(0, q.size());
505		q.add(one);
506		assertFalse(q.isEmpty());
507	<	assertTrue(q.contains(one));
507	>	mustContain(q, one);
508		q.clear();
509		assertTrue(q.isEmpty());
510		}
#	Line 496 | Line 513 | public class PriorityBlockingQueueTest e
513		* containsAll(c) is true when c contains a subset of elements
514		*/
515		public void testContainsAll() {
516	<	PriorityBlockingQueue q = populatedQueue(SIZE);
517	<	PriorityBlockingQueue p = new PriorityBlockingQueue(SIZE);
516	>	PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
517	>	PriorityBlockingQueue<Item> p = new PriorityBlockingQueue<>(SIZE);
518		for (int i = 0; i < SIZE; ++i) {
519		assertTrue(q.containsAll(p));
520		assertFalse(p.containsAll(q));
521	<	p.add(new Integer(i));
521	>	mustAdd(p, i);
522		}
523		assertTrue(p.containsAll(q));
524		}
#	Line 510 | Line 527 | public class PriorityBlockingQueueTest e
527		* retainAll(c) retains only those elements of c and reports true if changed
528		*/
529		public void testRetainAll() {
530	<	PriorityBlockingQueue q = populatedQueue(SIZE);
531	<	PriorityBlockingQueue p = populatedQueue(SIZE);
530	>	PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
531	>	PriorityBlockingQueue<Item> p = populatedQueue(SIZE);
532		for (int i = 0; i < SIZE; ++i) {
533		boolean changed = q.retainAll(p);
534		if (i == 0)
#	Line 520 | Line 537 | public class PriorityBlockingQueueTest e
537		assertTrue(changed);
538
539		assertTrue(q.containsAll(p));
540	<	assertEquals(SIZE - i, q.size());
540	>	mustEqual(SIZE - i, q.size());
541		p.remove();
542		}
543		}
#	Line 530 | Line 547 | public class PriorityBlockingQueueTest e
547		*/
548		public void testRemoveAll() {
549		for (int i = 1; i < SIZE; ++i) {
550	<	PriorityBlockingQueue q = populatedQueue(SIZE);
551	<	PriorityBlockingQueue p = populatedQueue(i);
550	>	PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
551	>	PriorityBlockingQueue<Item> p = populatedQueue(i);
552		assertTrue(q.removeAll(p));
553	<	assertEquals(SIZE - i, q.size());
553	>	mustEqual(SIZE - i, q.size());
554		for (int j = 0; j < i; ++j) {
555	<	Integer x = (Integer)(p.remove());
556	<	assertFalse(q.contains(x));
555	>	Item x = p.remove();
556	>	mustNotContain(q, x);
557		}
558		}
559		}
#	Line 545 | Line 562 | public class PriorityBlockingQueueTest e
562		* toArray contains all elements
563		*/
564		public void testToArray() throws InterruptedException {
565	<	PriorityBlockingQueue q = populatedQueue(SIZE);
566	<	Object[] o = q.toArray();
567	<	Arrays.sort(o);
568	<	for (int i = 0; i < o.length; i++)
569	<	assertSame(o[i], q.take());
565	>	PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
566	>	Object[] a = q.toArray();
567	>	assertSame(Object[].class, a.getClass());
568	>	Arrays.sort(a);
569	>	for (Object o : a)
570	>	assertSame(o, q.take());
571	>	assertTrue(q.isEmpty());
572		}
573
574		/**
575		* toArray(a) contains all elements
576		*/
577		public void testToArray2() throws InterruptedException {
578	<	PriorityBlockingQueue<Integer> q = populatedQueue(SIZE);
579	<	Integer[] ints = new Integer[SIZE];
580	<	Integer[] array = q.toArray(ints);
581	<	assertSame(ints, array);
582	<	Arrays.sort(ints);
583	<	for (int i = 0; i < ints.length; i++)
584	<	assertSame(ints[i], q.take());
578	>	PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
579	>	Item[] items = new Item[SIZE];
580	>	Item[] array = q.toArray(items);
581	>	assertSame(items, array);
582	>	Arrays.sort(items);
583	>	for (Item o : items)
584	>	assertSame(o, q.take());
585	>	assertTrue(q.isEmpty());
586		}
587
588		/**
589		* toArray(incompatible array type) throws ArrayStoreException
590		*/
591	<	public void testToArray1_BadArg() {
592	<	PriorityBlockingQueue q = populatedQueue(SIZE);
591	>	@SuppressWarnings("CollectionToArraySafeParameter")
592	>	public void testToArray_incompatibleArrayType() {
593	>	PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
594		try {
595		q.toArray(new String[10]);
596		shouldThrow();
#	Line 580 | Line 601 | public class PriorityBlockingQueueTest e
601		* iterator iterates through all elements
602		*/
603		public void testIterator() {
604	<	PriorityBlockingQueue q = populatedQueue(SIZE);
605	<	Iterator it = q.iterator();
604	>	PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
605	>	Iterator<? extends Item> it = q.iterator();
606		int i;
607		for (i = 0; it.hasNext(); i++)
608	<	assertTrue(q.contains(it.next()));
609	<	assertEquals(i, SIZE);
608	>	mustContain(q, it.next());
609	>	mustEqual(i, SIZE);
610		assertIteratorExhausted(it);
611		}
612
#	Line 593 | Line 614 | public class PriorityBlockingQueueTest e
614		* iterator of empty collection has no elements
615		*/
616		public void testEmptyIterator() {
617	<	assertIteratorExhausted(new PriorityBlockingQueue().iterator());
617	>	assertIteratorExhausted(new PriorityBlockingQueue<>().iterator());
618		}
619
620		/**
621		* iterator.remove removes current element
622		*/
623		public void testIteratorRemove() {
624	<	final PriorityBlockingQueue q = new PriorityBlockingQueue(3);
625	<	q.add(new Integer(2));
626	<	q.add(new Integer(1));
627	<	q.add(new Integer(3));
624	>	final PriorityBlockingQueue<Item> q = new PriorityBlockingQueue<>(3);
625	>	q.add(two);
626	>	q.add(one);
627	>	q.add(three);
628
629	<	Iterator it = q.iterator();
629	>	Iterator<? extends Item> it = q.iterator();
630		it.next();
631		it.remove();
632
633		it = q.iterator();
634	<	assertEquals(it.next(), new Integer(2));
635	<	assertEquals(it.next(), new Integer(3));
634	>	mustEqual(it.next(), two);
635	>	mustEqual(it.next(), three);
636		assertFalse(it.hasNext());
637		}
638
#	Line 619 | Line 640 | public class PriorityBlockingQueueTest e
640		* toString contains toStrings of elements
641		*/
642		public void testToString() {
643	<	PriorityBlockingQueue q = populatedQueue(SIZE);
643	>	PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
644		String s = q.toString();
645		for (int i = 0; i < SIZE; ++i) {
646		assertTrue(s.contains(String.valueOf(i)));
#	Line 630 | Line 651 | public class PriorityBlockingQueueTest e
651		* timed poll transfers elements across Executor tasks
652		*/
653		public void testPollInExecutor() {
654	<	final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
654	>	final PriorityBlockingQueue<Item> q = new PriorityBlockingQueue<>(2);
655		final CheckedBarrier threadsStarted = new CheckedBarrier(2);
656		final ExecutorService executor = Executors.newFixedThreadPool(2);
657		try (PoolCleaner cleaner = cleaner(executor)) {
#	Line 651 | Line 672 | public class PriorityBlockingQueueTest e
672		}
673
674		/**
675	<	* A deserialized serialized queue has same elements
675	>	* A deserialized/reserialized queue has same elements
676		*/
677		public void testSerialization() throws Exception {
678	<	Queue x = populatedQueue(SIZE);
679	<	Queue y = serialClone(x);
678	>	Queue<Item> x = populatedQueue(SIZE);
679	>	Queue<Item> y = serialClone(x);
680
681		assertNotSame(x, y);
682	<	assertEquals(x.size(), y.size());
682	>	mustEqual(x.size(), y.size());
683		while (!x.isEmpty()) {
684		assertFalse(y.isEmpty());
685	<	assertEquals(x.remove(), y.remove());
685	>	mustEqual(x.remove(), y.remove());
686		}
687		assertTrue(y.isEmpty());
688		}
#	Line 670 | Line 691 | public class PriorityBlockingQueueTest e
691		* drainTo(c) empties queue into another collection c
692		*/
693		public void testDrainTo() {
694	<	PriorityBlockingQueue q = populatedQueue(SIZE);
695	<	ArrayList l = new ArrayList();
694	>	PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
695	>	ArrayList<Item> l = new ArrayList<>();
696		q.drainTo(l);
697	<	assertEquals(0, q.size());
698	<	assertEquals(SIZE, l.size());
697	>	mustEqual(0, q.size());
698	>	mustEqual(SIZE, l.size());
699		for (int i = 0; i < SIZE; ++i)
700	<	assertEquals(l.get(i), new Integer(i));
700	>	mustEqual(l.get(i), i);
701		q.add(zero);
702		q.add(one);
703		assertFalse(q.isEmpty());
704	<	assertTrue(q.contains(zero));
684	<	assertTrue(q.contains(one));
704	>	mustContain(q, one);
705		l.clear();
706		q.drainTo(l);
707	<	assertEquals(0, q.size());
708	<	assertEquals(2, l.size());
707	>	mustEqual(0, q.size());
708	>	mustEqual(2, l.size());
709		for (int i = 0; i < 2; ++i)
710	<	assertEquals(l.get(i), new Integer(i));
710	>	mustEqual(l.get(i), i);
711		}
712
713		/**
714		* drainTo empties queue
715		*/
716		public void testDrainToWithActivePut() throws InterruptedException {
717	<	final PriorityBlockingQueue q = populatedQueue(SIZE);
717	>	final PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
718		Thread t = new Thread(new CheckedRunnable() {
719		public void realRun() {
720	<	q.put(new Integer(SIZE + 1));
720	>	q.put(new Item(SIZE + 1));
721		}});
722
723		t.start();
724	<	ArrayList l = new ArrayList();
724	>	ArrayList<Item> l = new ArrayList<>();
725		q.drainTo(l);
726		assertTrue(l.size() >= SIZE);
727		for (int i = 0; i < SIZE; ++i)
728	<	assertEquals(l.get(i), new Integer(i));
728	>	mustEqual(l.get(i), i);
729		t.join();
730		assertTrue(q.size() + l.size() >= SIZE);
731		}
#	Line 714 | Line 734 | public class PriorityBlockingQueueTest e
734		* drainTo(c, n) empties first min(n, size) elements of queue into c
735		*/
736		public void testDrainToN() {
737	<	PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE * 2);
737	>	PriorityBlockingQueue<Item> q = new PriorityBlockingQueue<>(SIZE * 2);
738		for (int i = 0; i < SIZE + 2; ++i) {
739		for (int j = 0; j < SIZE; j++)
740	<	assertTrue(q.offer(new Integer(j)));
741	<	ArrayList l = new ArrayList();
740	>	mustOffer(q, j);
741	>	ArrayList<Item> l = new ArrayList<>();
742		q.drainTo(l, i);
743		int k = (i < SIZE) ? i : SIZE;
744	<	assertEquals(k, l.size());
745	<	assertEquals(SIZE - k, q.size());
744	>	mustEqual(k, l.size());
745	>	mustEqual(SIZE - k, q.size());
746		for (int j = 0; j < k; ++j)
747	<	assertEquals(l.get(j), new Integer(j));
747	>	mustEqual(l.get(j), j);
748		do {} while (q.poll() != null);
749		}
750		}
#	Line 734 | Line 754 | public class PriorityBlockingQueueTest e
754		*/
755		public void testNeverContainsNull() {
756		Collection<?>[] qs = {
757	<	new PriorityBlockingQueue<Object>(),
757	>	new PriorityBlockingQueue<>(),
758		populatedQueue(2),
759		};
760

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