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Comparing jsr166/src/test/tck/ArrayBlockingQueueTest.java (file contents):
Revision 1.43 by jsr166, Tue Mar 15 19:47:06 2011 UTC vs.
Revision 1.76 by jsr166, Sun Nov 6 02:40:38 2016 UTC

#	Line 6 | Line 6
6		* Pat Fisher, Mike Judd.
7		*/
8
9	–
10	–	import junit.framework.*;
11	–	import java.util.*;
12	–	import java.util.concurrent.*;
9		import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	<	import java.io.*;
10	>
11	>	import java.util.ArrayList;
12	>	import java.util.Arrays;
13	>	import java.util.Collection;
14	>	import java.util.Iterator;
15	>	import java.util.NoSuchElementException;
16	>	import java.util.Queue;
17	>	import java.util.concurrent.ArrayBlockingQueue;
18	>	import java.util.concurrent.BlockingQueue;
19	>	import java.util.concurrent.CountDownLatch;
20	>	import java.util.concurrent.Executors;
21	>	import java.util.concurrent.ExecutorService;
22	>	import java.util.concurrent.ThreadLocalRandom;
23	>
24	>	import junit.framework.Test;
25
26		public class ArrayBlockingQueueTest extends JSR166TestCase {
27
28	+	public static void main(String[] args) {
29	+	main(suite(), args);
30	+	}
31	+
32	+	public static Test suite() {
33	+	class Implementation implements CollectionImplementation {
34	+	public Class<?> klazz() { return ArrayBlockingQueue.class; }
35	+	public Collection emptyCollection() {
36	+	boolean fair = ThreadLocalRandom.current().nextBoolean();
37	+	return populatedQueue(0, SIZE, 2 * SIZE, fair);
38	+	}
39	+	public Object makeElement(int i) { return i; }
40	+	public boolean isConcurrent() { return true; }
41	+	public boolean permitsNulls() { return false; }
42	+	}
43	+
44	+	return newTestSuite(
45	+	ArrayBlockingQueueTest.class,
46	+	new Fair().testSuite(),
47	+	new NonFair().testSuite(),
48	+	CollectionTest.testSuite(new Implementation()));
49	+	}
50	+
51		public static class Fair extends BlockingQueueTest {
52		protected BlockingQueue emptyCollection() {
53	<	return new ArrayBlockingQueue(20, true);
53	>	return populatedQueue(0, SIZE, 2 * SIZE, true);
54		}
55		}
56
57		public static class NonFair extends BlockingQueueTest {
58		protected BlockingQueue emptyCollection() {
59	<	return new ArrayBlockingQueue(20, false);
59	>	return populatedQueue(0, SIZE, 2 * SIZE, false);
60		}
61		}
62
63	<	public static void main(String[] args) {
64	<	junit.textui.TestRunner.run(suite());
65	<	}
66	<
67	<	public static Test suite() {
68	<	return newTestSuite(ArrayBlockingQueueTest.class,
36	<	new Fair().testSuite(),
37	<	new NonFair().testSuite());
63	>	/**
64	>	* Returns a new queue of given size containing consecutive
65	>	* Integers 0 ... n - 1.
66	>	*/
67	>	static ArrayBlockingQueue<Integer> populatedQueue(int n) {
68	>	return populatedQueue(n, n, n, false);
69		}
70
71		/**
72	<	* Create a queue of given size containing consecutive
73	<	* Integers 0 ... n.
72	>	* Returns a new queue of given size containing consecutive
73	>	* Integers 0 ... n - 1, with given capacity range and fairness.
74		*/
75	<	private ArrayBlockingQueue<Integer> populatedQueue(int n) {
76	<	ArrayBlockingQueue<Integer> q = new ArrayBlockingQueue<Integer>(n);
75	>	static ArrayBlockingQueue<Integer> populatedQueue(
76	>	int size, int minCapacity, int maxCapacity, boolean fair) {
77	>	ThreadLocalRandom rnd = ThreadLocalRandom.current();
78	>	int capacity = rnd.nextInt(minCapacity, maxCapacity + 1);
79	>	ArrayBlockingQueue<Integer> q = new ArrayBlockingQueue<>(capacity);
80		assertTrue(q.isEmpty());
81	<	for (int i = 0; i < n; i++)
82	<	assertTrue(q.offer(new Integer(i)));
83	<	assertFalse(q.isEmpty());
84	<	assertEquals(0, q.remainingCapacity());
85	<	assertEquals(n, q.size());
81	>	// shuffle circular array elements so they wrap
82	>	{
83	>	int n = rnd.nextInt(capacity);
84	>	for (int i = 0; i < n; i++) q.add(42);
85	>	for (int i = 0; i < n; i++) q.remove();
86	>	}
87	>	for (int i = 0; i < size; i++)
88	>	assertTrue(q.offer((Integer) i));
89	>	assertEquals(size == 0, q.isEmpty());
90	>	assertEquals(capacity - size, q.remainingCapacity());
91	>	assertEquals(size, q.size());
92	>	if (size > 0)
93	>	assertEquals((Integer) 0, q.peek());
94		return q;
95		}
96
#	Line 64 | Line 106 | public class ArrayBlockingQueueTest exte
106		*/
107		public void testConstructor2() {
108		try {
109	<	ArrayBlockingQueue q = new ArrayBlockingQueue(0);
109	>	new ArrayBlockingQueue(0);
110		shouldThrow();
111		} catch (IllegalArgumentException success) {}
112		}
#	Line 74 | Line 116 | public class ArrayBlockingQueueTest exte
116		*/
117		public void testConstructor3() {
118		try {
119	<	ArrayBlockingQueue q = new ArrayBlockingQueue(1, true, null);
119	>	new ArrayBlockingQueue(1, true, null);
120		shouldThrow();
121		} catch (NullPointerException success) {}
122		}
#	Line 83 | Line 125 | public class ArrayBlockingQueueTest exte
125		* Initializing from Collection of null elements throws NPE
126		*/
127		public void testConstructor4() {
128	+	Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
129		try {
130	<	Integer[] ints = new Integer[SIZE];
88	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, false, Arrays.asList(ints));
130	>	new ArrayBlockingQueue(SIZE, false, elements);
131		shouldThrow();
132		} catch (NullPointerException success) {}
133		}
#	Line 94 | Line 136 | public class ArrayBlockingQueueTest exte
136		* Initializing from Collection with some null elements throws NPE
137		*/
138		public void testConstructor5() {
139	+	Integer[] ints = new Integer[SIZE];
140	+	for (int i = 0; i < SIZE - 1; ++i)
141	+	ints[i] = i;
142	+	Collection<Integer> elements = Arrays.asList(ints);
143		try {
144	<	Integer[] ints = new Integer[SIZE];
99	<	for (int i = 0; i < SIZE-1; ++i)
100	<	ints[i] = new Integer(i);
101	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, false, Arrays.asList(ints));
144	>	new ArrayBlockingQueue(SIZE, false, elements);
145		shouldThrow();
146		} catch (NullPointerException success) {}
147		}
#	Line 107 | Line 150 | public class ArrayBlockingQueueTest exte
150		* Initializing from too large collection throws IAE
151		*/
152		public void testConstructor6() {
153	+	Integer[] ints = new Integer[SIZE];
154	+	for (int i = 0; i < SIZE; ++i)
155	+	ints[i] = i;
156	+	Collection<Integer> elements = Arrays.asList(ints);
157		try {
158	<	Integer[] ints = new Integer[SIZE];
112	<	for (int i = 0; i < SIZE; ++i)
113	<	ints[i] = new Integer(i);
114	<	ArrayBlockingQueue q = new ArrayBlockingQueue(1, false, Arrays.asList(ints));
158	>	new ArrayBlockingQueue(SIZE - 1, false, elements);
159		shouldThrow();
160		} catch (IllegalArgumentException success) {}
161		}
#	Line 122 | Line 166 | public class ArrayBlockingQueueTest exte
166		public void testConstructor7() {
167		Integer[] ints = new Integer[SIZE];
168		for (int i = 0; i < SIZE; ++i)
169	<	ints[i] = new Integer(i);
170	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, true, Arrays.asList(ints));
169	>	ints[i] = i;
170	>	Collection<Integer> elements = Arrays.asList(ints);
171	>	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, true, elements);
172		for (int i = 0; i < SIZE; ++i)
173		assertEquals(ints[i], q.poll());
174		}
#	Line 147 | Line 192 | public class ArrayBlockingQueueTest exte
192		* remainingCapacity decreases on add, increases on remove
193		*/
194		public void testRemainingCapacity() {
195	<	ArrayBlockingQueue q = populatedQueue(SIZE);
195	>	BlockingQueue q = populatedQueue(SIZE);
196		for (int i = 0; i < SIZE; ++i) {
197		assertEquals(i, q.remainingCapacity());
198	<	assertEquals(SIZE-i, q.size());
199	<	q.remove();
198	>	assertEquals(SIZE, q.size() + q.remainingCapacity());
199	>	assertEquals(i, q.remove());
200		}
201		for (int i = 0; i < SIZE; ++i) {
202	<	assertEquals(SIZE-i, q.remainingCapacity());
203	<	assertEquals(i, q.size());
204	<	q.add(new Integer(i));
202	>	assertEquals(SIZE - i, q.remainingCapacity());
203	>	assertEquals(SIZE, q.size() + q.remainingCapacity());
204	>	assertTrue(q.add(i));
205		}
206		}
207
208		/**
164	–	* offer(null) throws NPE
165	–	*/
166	–	public void testOfferNull() {
167	–	try {
168	–	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
169	–	q.offer(null);
170	–	shouldThrow();
171	–	} catch (NullPointerException success) {}
172	–	}
173	–
174	–	/**
175	–	* add(null) throws NPE
176	–	*/
177	–	public void testAddNull() {
178	–	try {
179	–	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
180	–	q.add(null);
181	–	shouldThrow();
182	–	} catch (NullPointerException success) {}
183	–	}
184	–
185	–	/**
209		* Offer succeeds if not full; fails if full
210		*/
211		public void testOffer() {
#	Line 195 | Line 218 | public class ArrayBlockingQueueTest exte
218		* add succeeds if not full; throws ISE if full
219		*/
220		public void testAdd() {
221	+	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
222	+	for (int i = 0; i < SIZE; ++i) {
223	+	assertTrue(q.add(new Integer(i)));
224	+	}
225	+	assertEquals(0, q.remainingCapacity());
226		try {
199	–	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
200	–	for (int i = 0; i < SIZE; ++i) {
201	–	assertTrue(q.add(new Integer(i)));
202	–	}
203	–	assertEquals(0, q.remainingCapacity());
227		q.add(new Integer(SIZE));
228		shouldThrow();
229		} catch (IllegalStateException success) {}
230		}
231
232		/**
210	–	* addAll(null) throws NPE
211	–	*/
212	–	public void testAddAll1() {
213	–	try {
214	–	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
215	–	q.addAll(null);
216	–	shouldThrow();
217	–	} catch (NullPointerException success) {}
218	–	}
219	–
220	–	/**
233		* addAll(this) throws IAE
234		*/
235		public void testAddAllSelf() {
236	+	ArrayBlockingQueue q = populatedQueue(SIZE);
237		try {
225	–	ArrayBlockingQueue q = populatedQueue(SIZE);
238		q.addAll(q);
239		shouldThrow();
240		} catch (IllegalArgumentException success) {}
241		}
242
231	–
232	–	/**
233	–	* addAll of a collection with null elements throws NPE
234	–	*/
235	–	public void testAddAll2() {
236	–	try {
237	–	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
238	–	Integer[] ints = new Integer[SIZE];
239	–	q.addAll(Arrays.asList(ints));
240	–	shouldThrow();
241	–	} catch (NullPointerException success) {}
242	–	}
243	–
243		/**
244		* addAll of a collection with any null elements throws NPE after
245		* possibly adding some elements
246		*/
247		public void testAddAll3() {
248	+	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
249	+	Integer[] ints = new Integer[SIZE];
250	+	for (int i = 0; i < SIZE - 1; ++i)
251	+	ints[i] = new Integer(i);
252		try {
250	–	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
251	–	Integer[] ints = new Integer[SIZE];
252	–	for (int i = 0; i < SIZE-1; ++i)
253	–	ints[i] = new Integer(i);
253		q.addAll(Arrays.asList(ints));
254		shouldThrow();
255		} catch (NullPointerException success) {}
#	Line 260 | Line 259 | public class ArrayBlockingQueueTest exte
259		* addAll throws ISE if not enough room
260		*/
261		public void testAddAll4() {
262	+	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
263	+	Integer[] ints = new Integer[SIZE];
264	+	for (int i = 0; i < SIZE; ++i)
265	+	ints[i] = new Integer(i);
266		try {
264	–	ArrayBlockingQueue q = new ArrayBlockingQueue(1);
265	–	Integer[] ints = new Integer[SIZE];
266	–	for (int i = 0; i < SIZE; ++i)
267	–	ints[i] = new Integer(i);
267		q.addAll(Arrays.asList(ints));
268		shouldThrow();
269		} catch (IllegalStateException success) {}
#	Line 286 | Line 285 | public class ArrayBlockingQueueTest exte
285		}
286
287		/**
289	–	* put(null) throws NPE
290	–	*/
291	–	public void testPutNull() throws InterruptedException {
292	–	try {
293	–	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
294	–	q.put(null);
295	–	shouldThrow();
296	–	} catch (NullPointerException success) {}
297	–	}
298	–
299	–	/**
288		* all elements successfully put are contained
289		*/
290		public void testPut() throws InterruptedException {
291		ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
292		for (int i = 0; i < SIZE; ++i) {
293	<	Integer I = new Integer(i);
294	<	q.put(I);
295	<	assertTrue(q.contains(I));
293	>	Integer x = new Integer(i);
294	>	q.put(x);
295	>	assertTrue(q.contains(x));
296		}
297		assertEquals(0, q.remainingCapacity());
298		}
#	Line 314 | Line 302 | public class ArrayBlockingQueueTest exte
302		*/
303		public void testBlockingPut() throws InterruptedException {
304		final ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE);
305	<	Thread t = new Thread(new CheckedRunnable() {
305	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
306	>	Thread t = newStartedThread(new CheckedRunnable() {
307		public void realRun() throws InterruptedException {
308		for (int i = 0; i < SIZE; ++i)
309		q.put(i);
310		assertEquals(SIZE, q.size());
311		assertEquals(0, q.remainingCapacity());
312	+
313	+	Thread.currentThread().interrupt();
314		try {
315		q.put(99);
316		shouldThrow();
317		} catch (InterruptedException success) {}
318	+	assertFalse(Thread.interrupted());
319	+
320	+	pleaseInterrupt.countDown();
321	+	try {
322	+	q.put(99);
323	+	shouldThrow();
324	+	} catch (InterruptedException success) {}
325	+	assertFalse(Thread.interrupted());
326		}});
327
328	<	t.start();
329	<	Thread.sleep(SHORT_DELAY_MS);
328	>	await(pleaseInterrupt);
329	>	assertThreadStaysAlive(t);
330		t.interrupt();
331	<	t.join();
331	>	awaitTermination(t);
332		assertEquals(SIZE, q.size());
333		assertEquals(0, q.remainingCapacity());
334		}
335
336		/**
337	<	* put blocks waiting for take when full
337	>	* put blocks interruptibly waiting for take when full
338		*/
339		public void testPutWithTake() throws InterruptedException {
340		final int capacity = 2;
341		final ArrayBlockingQueue q = new ArrayBlockingQueue(capacity);
342	<	Thread t = new Thread(new CheckedRunnable() {
342	>	final CountDownLatch pleaseTake = new CountDownLatch(1);
343	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
344	>	Thread t = newStartedThread(new CheckedRunnable() {
345		public void realRun() throws InterruptedException {
346	<	for (int i = 0; i < capacity + 1; i++)
346	>	for (int i = 0; i < capacity; i++)
347		q.put(i);
348	+	pleaseTake.countDown();
349	+	q.put(86);
350	+
351	+	pleaseInterrupt.countDown();
352		try {
353		q.put(99);
354		shouldThrow();
355		} catch (InterruptedException success) {}
356	+	assertFalse(Thread.interrupted());
357		}});
358
359	<	t.start();
360	<	Thread.sleep(SHORT_DELAY_MS);
355	<	assertEquals(q.remainingCapacity(), 0);
359	>	await(pleaseTake);
360	>	assertEquals(0, q.remainingCapacity());
361		assertEquals(0, q.take());
362	<	Thread.sleep(SHORT_DELAY_MS);
362	>
363	>	await(pleaseInterrupt);
364	>	assertThreadStaysAlive(t);
365		t.interrupt();
366	<	t.join();
367	<	assertEquals(q.remainingCapacity(), 0);
366	>	awaitTermination(t);
367	>	assertEquals(0, q.remainingCapacity());
368		}
369
370		/**
#	Line 365 | Line 372 | public class ArrayBlockingQueueTest exte
372		*/
373		public void testTimedOffer() throws InterruptedException {
374		final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
375	<	Thread t = new Thread(new CheckedRunnable() {
375	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
376	>	Thread t = newStartedThread(new CheckedRunnable() {
377		public void realRun() throws InterruptedException {
378		q.put(new Object());
379		q.put(new Object());
380	<	assertFalse(q.offer(new Object(), SHORT_DELAY_MS/2, MILLISECONDS));
380	>	long startTime = System.nanoTime();
381	>	assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS));
382	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
383	>	pleaseInterrupt.countDown();
384		try {
385	<	q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS);
385	>	q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS);
386		shouldThrow();
387		} catch (InterruptedException success) {}
388		}});
389
390	<	t.start();
391	<	Thread.sleep(SHORT_DELAY_MS);
390	>	await(pleaseInterrupt);
391	>	assertThreadStaysAlive(t);
392		t.interrupt();
393	<	t.join();
393	>	awaitTermination(t);
394		}
395
396		/**
#	Line 397 | Line 408 | public class ArrayBlockingQueueTest exte
408		*/
409		public void testBlockingTake() throws InterruptedException {
410		final ArrayBlockingQueue q = populatedQueue(SIZE);
411	<	Thread t = new Thread(new CheckedRunnable() {
411	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
412	>	Thread t = newStartedThread(new CheckedRunnable() {
413		public void realRun() throws InterruptedException {
414		for (int i = 0; i < SIZE; ++i) {
415		assertEquals(i, q.take());
416		}
417	+
418	+	Thread.currentThread().interrupt();
419		try {
420		q.take();
421		shouldThrow();
422		} catch (InterruptedException success) {}
423	+	assertFalse(Thread.interrupted());
424	+
425	+	pleaseInterrupt.countDown();
426	+	try {
427	+	q.take();
428	+	shouldThrow();
429	+	} catch (InterruptedException success) {}
430	+	assertFalse(Thread.interrupted());
431		}});
432
433	<	t.start();
434	<	Thread.sleep(SHORT_DELAY_MS);
433	>	await(pleaseInterrupt);
434	>	assertThreadStaysAlive(t);
435		t.interrupt();
436	<	t.join();
436	>	awaitTermination(t);
437		}
438
417	–
439		/**
440		* poll succeeds unless empty
441		*/
#	Line 435 | Line 456 | public class ArrayBlockingQueueTest exte
456		assertEquals(i, q.poll(0, MILLISECONDS));
457		}
458		assertNull(q.poll(0, MILLISECONDS));
459	+	checkEmpty(q);
460		}
461
462		/**
#	Line 443 | Line 465 | public class ArrayBlockingQueueTest exte
465		public void testTimedPoll() throws InterruptedException {
466		ArrayBlockingQueue q = populatedQueue(SIZE);
467		for (int i = 0; i < SIZE; ++i) {
468	<	assertEquals(i, q.poll(SHORT_DELAY_MS, MILLISECONDS));
469	<	}
470	<	assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS));
468	>	long startTime = System.nanoTime();
469	>	assertEquals(i, q.poll(LONG_DELAY_MS, MILLISECONDS));
470	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
471	>	}
472	>	long startTime = System.nanoTime();
473	>	assertNull(q.poll(timeoutMillis(), MILLISECONDS));
474	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
475	>	checkEmpty(q);
476		}
477
478		/**
#	Line 457 | Line 484 | public class ArrayBlockingQueueTest exte
484		final CountDownLatch aboutToWait = new CountDownLatch(1);
485		Thread t = newStartedThread(new CheckedRunnable() {
486		public void realRun() throws InterruptedException {
487	+	long startTime = System.nanoTime();
488		for (int i = 0; i < SIZE; ++i) {
461	–	long t0 = System.nanoTime();
489		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
463	–	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
490		}
465	–	long t0 = System.nanoTime();
491		aboutToWait.countDown();
492		try {
493	<	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
493	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
494		shouldThrow();
495		} catch (InterruptedException success) {
496	<	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
496	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
497		}
498		}});
499
500	<	aboutToWait.await();
501	<	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
500	>	await(aboutToWait);
501	>	waitForThreadToEnterWaitState(t);
502		t.interrupt();
503	<	awaitTermination(t, MEDIUM_DELAY_MS);
503	>	awaitTermination(t);
504		checkEmpty(q);
505		}
506
#	Line 523 | Line 548 | public class ArrayBlockingQueueTest exte
548		}
549
550		/**
526	–	* remove(x) removes x and returns true if present
527	–	*/
528	–	public void testRemoveElement() {
529	–	ArrayBlockingQueue q = populatedQueue(SIZE);
530	–	for (int i = 1; i < SIZE; i+=2) {
531	–	assertTrue(q.remove(new Integer(i)));
532	–	}
533	–	for (int i = 0; i < SIZE; i+=2) {
534	–	assertTrue(q.remove(new Integer(i)));
535	–	assertFalse(q.remove(new Integer(i+1)));
536	–	}
537	–	assertTrue(q.isEmpty());
538	–	}
539	–
540	–	/**
551		* contains(x) reports true when elements added but not yet removed
552		*/
553		public void testContains() {
#	Line 593 | Line 603 | public class ArrayBlockingQueueTest exte
603		assertTrue(changed);
604
605		assertTrue(q.containsAll(p));
606	<	assertEquals(SIZE-i, q.size());
606	>	assertEquals(SIZE - i, q.size());
607		p.remove();
608		}
609		}
#	Line 606 | Line 616 | public class ArrayBlockingQueueTest exte
616		ArrayBlockingQueue q = populatedQueue(SIZE);
617		ArrayBlockingQueue p = populatedQueue(i);
618		assertTrue(q.removeAll(p));
619	<	assertEquals(SIZE-i, q.size());
619	>	assertEquals(SIZE - i, q.size());
620		for (int j = 0; j < i; ++j) {
621	<	Integer I = (Integer)(p.remove());
622	<	assertFalse(q.contains(I));
621	>	Integer x = (Integer)(p.remove());
622	>	assertFalse(q.contains(x));
623		}
624		}
625		}
626
627	<	/**
628	<	* toArray contains all elements in FIFO order
629	<	*/
630	<	public void testToArray() {
631	<	ArrayBlockingQueue q = populatedQueue(SIZE);
632	<	Object[] o = q.toArray();
633	<	for (int i = 0; i < o.length; i++)
634	<	assertSame(o[i], q.poll());
635	<	}
636	<
637	<	/**
638	<	* toArray(a) contains all elements in FIFO order
639	<	*/
640	<	public void testToArray2() {
641	<	ArrayBlockingQueue<Integer> q = populatedQueue(SIZE);
642	<	Integer[] ints = new Integer[SIZE];
643	<	Integer[] array = q.toArray(ints);
644	<	assertSame(ints, array);
645	<	for (int i = 0; i < ints.length; i++)
646	<	assertSame(ints[i], q.poll());
627	>	void checkToArray(ArrayBlockingQueue<Integer> q) {
628	>	int size = q.size();
629	>	Object[] a1 = q.toArray();
630	>	assertEquals(size, a1.length);
631	>	Integer[] a2 = q.toArray(new Integer[0]);
632	>	assertEquals(size, a2.length);
633	>	Integer[] a3 = q.toArray(new Integer[Math.max(0, size - 1)]);
634	>	assertEquals(size, a3.length);
635	>	Integer[] a4 = new Integer[size];
636	>	assertSame(a4, q.toArray(a4));
637	>	Integer[] a5 = new Integer[size + 1];
638	>	Arrays.fill(a5, 42);
639	>	assertSame(a5, q.toArray(a5));
640	>	Integer[] a6 = new Integer[size + 2];
641	>	Arrays.fill(a6, 42);
642	>	assertSame(a6, q.toArray(a6));
643	>	Object[][] as = { a1, a2, a3, a4, a5, a6 };
644	>	for (Object[] a : as) {
645	>	if (a.length > size) assertNull(a[size]);
646	>	if (a.length > size + 1) assertEquals(42, a[size + 1]);
647	>	}
648	>	Iterator it = q.iterator();
649	>	Integer s = q.peek();
650	>	for (int i = 0; i < size; i++) {
651	>	Integer x = (Integer) it.next();
652	>	assertEquals(s + i, (int) x);
653	>	for (Object[] a : as)
654	>	assertSame(a1[i], x);
655	>	}
656		}
657
658		/**
659	<	* toArray(null) throws NullPointerException
659	>	* toArray() and toArray(a) contain all elements in FIFO order
660		*/
661	<	public void testToArray_NullArg() {
662	<	ArrayBlockingQueue q = populatedQueue(SIZE);
663	<	try {
664	<	q.toArray(null);
665	<	shouldThrow();
666	<	} catch (NullPointerException success) {}
661	>	public void testToArray() {
662	>	final ThreadLocalRandom rnd = ThreadLocalRandom.current();
663	>	final int size = rnd.nextInt(6);
664	>	final int capacity = Math.max(1, size + rnd.nextInt(size + 1));
665	>	ArrayBlockingQueue<Integer> q = new ArrayBlockingQueue<>(capacity);
666	>	for (int i = 0; i < size; i++) {
667	>	checkToArray(q);
668	>	q.add(i);
669	>	}
670	>	// Provoke wraparound
671	>	int added = size * 2;
672	>	for (int i = 0; i < added; i++) {
673	>	checkToArray(q);
674	>	assertEquals((Integer) i, q.poll());
675	>	q.add(size + i);
676	>	}
677	>	for (int i = 0; i < size; i++) {
678	>	checkToArray(q);
679	>	assertEquals((Integer) (added + i), q.poll());
680	>	}
681		}
682
683		/**
684		* toArray(incompatible array type) throws ArrayStoreException
685		*/
686	<	public void testToArray1_BadArg() {
686	>	public void testToArray_incompatibleArrayType() {
687		ArrayBlockingQueue q = populatedQueue(SIZE);
688		try {
689		q.toArray(new String[10]);
690		shouldThrow();
691		} catch (ArrayStoreException success) {}
692	+	try {
693	+	q.toArray(new String[0]);
694	+	shouldThrow();
695	+	} catch (ArrayStoreException success) {}
696		}
697
661	–
698		/**
699		* iterator iterates through all elements
700		*/
701		public void testIterator() throws InterruptedException {
702		ArrayBlockingQueue q = populatedQueue(SIZE);
703		Iterator it = q.iterator();
704	<	while (it.hasNext()) {
704	>	int i;
705	>	for (i = 0; it.hasNext(); i++)
706	>	assertTrue(q.contains(it.next()));
707	>	assertEquals(i, SIZE);
708	>	assertIteratorExhausted(it);
709	>
710	>	it = q.iterator();
711	>	for (i = 0; it.hasNext(); i++)
712		assertEquals(it.next(), q.take());
713	<	}
713	>	assertEquals(i, SIZE);
714	>	assertIteratorExhausted(it);
715	>	}
716	>
717	>	/**
718	>	* iterator of empty collection has no elements
719	>	*/
720	>	public void testEmptyIterator() {
721	>	assertIteratorExhausted(new ArrayBlockingQueue(SIZE).iterator());
722		}
723
724		/**
#	Line 722 | Line 773 | public class ArrayBlockingQueueTest exte
773		assertEquals(0, q.size());
774		}
775
725	–
776		/**
777		* toString contains toStrings of elements
778		*/
#	Line 730 | Line 780 | public class ArrayBlockingQueueTest exte
780		ArrayBlockingQueue q = populatedQueue(SIZE);
781		String s = q.toString();
782		for (int i = 0; i < SIZE; ++i) {
783	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
783	>	assertTrue(s.contains(String.valueOf(i)));
784		}
785		}
786
737	–
787		/**
788		* offer transfers elements across Executor tasks
789		*/
#	Line 742 | Line 791 | public class ArrayBlockingQueueTest exte
791		final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
792		q.add(one);
793		q.add(two);
794	<	ExecutorService executor = Executors.newFixedThreadPool(2);
795	<	executor.execute(new CheckedRunnable() {
796	<	public void realRun() throws InterruptedException {
797	<	assertFalse(q.offer(three));
798	<	assertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS));
799	<	assertEquals(0, q.remainingCapacity());
800	<	}});
801	<
802	<	executor.execute(new CheckedRunnable() {
803	<	public void realRun() throws InterruptedException {
804	<	Thread.sleep(SMALL_DELAY_MS);
805	<	assertSame(one, q.take());
806	<	}});
807	<
808	<	joinPool(executor);
794	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
795	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
796	>	try (PoolCleaner cleaner = cleaner(executor)) {
797	>	executor.execute(new CheckedRunnable() {
798	>	public void realRun() throws InterruptedException {
799	>	assertFalse(q.offer(three));
800	>	threadsStarted.await();
801	>	assertTrue(q.offer(three, LONG_DELAY_MS, MILLISECONDS));
802	>	assertEquals(0, q.remainingCapacity());
803	>	}});
804	>
805	>	executor.execute(new CheckedRunnable() {
806	>	public void realRun() throws InterruptedException {
807	>	threadsStarted.await();
808	>	assertEquals(0, q.remainingCapacity());
809	>	assertSame(one, q.take());
810	>	}});
811	>	}
812		}
813
814		/**
815	<	* poll retrieves elements across Executor threads
815	>	* timed poll retrieves elements across Executor threads
816		*/
817		public void testPollInExecutor() {
818		final ArrayBlockingQueue q = new ArrayBlockingQueue(2);
819	<	ExecutorService executor = Executors.newFixedThreadPool(2);
820	<	executor.execute(new CheckedRunnable() {
821	<	public void realRun() throws InterruptedException {
822	<	assertNull(q.poll());
823	<	assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS));
824	<	assertTrue(q.isEmpty());
825	<	}});
826	<
827	<	executor.execute(new CheckedRunnable() {
828	<	public void realRun() throws InterruptedException {
829	<	Thread.sleep(SMALL_DELAY_MS);
830	<	q.put(one);
831	<	}});
832	<
833	<	joinPool(executor);
819	>	final CheckedBarrier threadsStarted = new CheckedBarrier(2);
820	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
821	>	try (PoolCleaner cleaner = cleaner(executor)) {
822	>	executor.execute(new CheckedRunnable() {
823	>	public void realRun() throws InterruptedException {
824	>	assertNull(q.poll());
825	>	threadsStarted.await();
826	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
827	>	checkEmpty(q);
828	>	}});
829	>
830	>	executor.execute(new CheckedRunnable() {
831	>	public void realRun() throws InterruptedException {
832	>	threadsStarted.await();
833	>	q.put(one);
834	>	}});
835	>	}
836		}
837
838		/**
839		* A deserialized serialized queue has same elements in same order
840		*/
841		public void testSerialization() throws Exception {
842	<	ArrayBlockingQueue q = populatedQueue(SIZE);
843	<
790	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
791	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
792	<	out.writeObject(q);
793	<	out.close();
794	<
795	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
796	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
797	<	ArrayBlockingQueue r = (ArrayBlockingQueue)in.readObject();
798	<	assertEquals(q.size(), r.size());
799	<	while (!q.isEmpty())
800	<	assertEquals(q.remove(), r.remove());
801	<	}
842	>	Queue x = populatedQueue(SIZE);
843	>	Queue y = serialClone(x);
844
845	<	/**
846	<	* drainTo(null) throws NPE
847	<	*/
848	<	public void testDrainToNull() {
849	<	ArrayBlockingQueue q = populatedQueue(SIZE);
850	<	try {
851	<	q.drainTo(null);
852	<	shouldThrow();
853	<	} catch (NullPointerException success) {}
812	<	}
813	<
814	<	/**
815	<	* drainTo(this) throws IAE
816	<	*/
817	<	public void testDrainToSelf() {
818	<	ArrayBlockingQueue q = populatedQueue(SIZE);
819	<	try {
820	<	q.drainTo(q);
821	<	shouldThrow();
822	<	} catch (IllegalArgumentException success) {}
845	>	assertNotSame(x, y);
846	>	assertEquals(x.size(), y.size());
847	>	assertEquals(x.toString(), y.toString());
848	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
849	>	while (!x.isEmpty()) {
850	>	assertFalse(y.isEmpty());
851	>	assertEquals(x.remove(), y.remove());
852	>	}
853	>	assertTrue(y.isEmpty());
854		}
855
856		/**
#	Line 829 | Line 860 | public class ArrayBlockingQueueTest exte
860		ArrayBlockingQueue q = populatedQueue(SIZE);
861		ArrayList l = new ArrayList();
862		q.drainTo(l);
863	<	assertEquals(q.size(), 0);
864	<	assertEquals(l.size(), SIZE);
863	>	assertEquals(0, q.size());
864	>	assertEquals(SIZE, l.size());
865		for (int i = 0; i < SIZE; ++i)
866		assertEquals(l.get(i), new Integer(i));
867		q.add(zero);
#	Line 840 | Line 871 | public class ArrayBlockingQueueTest exte
871		assertTrue(q.contains(one));
872		l.clear();
873		q.drainTo(l);
874	<	assertEquals(q.size(), 0);
875	<	assertEquals(l.size(), 2);
874	>	assertEquals(0, q.size());
875	>	assertEquals(2, l.size());
876		for (int i = 0; i < 2; ++i)
877		assertEquals(l.get(i), new Integer(i));
878		}
#	Line 853 | Line 884 | public class ArrayBlockingQueueTest exte
884		final ArrayBlockingQueue q = populatedQueue(SIZE);
885		Thread t = new Thread(new CheckedRunnable() {
886		public void realRun() throws InterruptedException {
887	<	q.put(new Integer(SIZE+1));
887	>	q.put(new Integer(SIZE + 1));
888		}});
889
890		t.start();
#	Line 867 | Line 898 | public class ArrayBlockingQueueTest exte
898		}
899
900		/**
870	–	* drainTo(null, n) throws NPE
871	–	*/
872	–	public void testDrainToNullN() {
873	–	ArrayBlockingQueue q = populatedQueue(SIZE);
874	–	try {
875	–	q.drainTo(null, 0);
876	–	shouldThrow();
877	–	} catch (NullPointerException success) {}
878	–	}
879	–
880	–	/**
881	–	* drainTo(this, n) throws IAE
882	–	*/
883	–	public void testDrainToSelfN() {
884	–	ArrayBlockingQueue q = populatedQueue(SIZE);
885	–	try {
886	–	q.drainTo(q, 0);
887	–	shouldThrow();
888	–	} catch (IllegalArgumentException success) {}
889	–	}
890	–
891	–	/**
901		* drainTo(c, n) empties first min(n, size) elements of queue into c
902		*/
903		public void testDrainToN() {
904	<	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE*2);
904	>	ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE * 2);
905		for (int i = 0; i < SIZE + 2; ++i) {
906		for (int j = 0; j < SIZE; j++)
907		assertTrue(q.offer(new Integer(j)));
908		ArrayList l = new ArrayList();
909		q.drainTo(l, i);
910		int k = (i < SIZE) ? i : SIZE;
911	<	assertEquals(l.size(), k);
912	<	assertEquals(q.size(), SIZE-k);
911	>	assertEquals(k, l.size());
912	>	assertEquals(SIZE - k, q.size());
913		for (int j = 0; j < k; ++j)
914		assertEquals(l.get(j), new Integer(j));
915	<	while (q.poll() != null) ;
915	>	do {} while (q.poll() != null);
916		}
917		}
918
919	+	/**
920	+	* remove(null), contains(null) always return false
921	+	*/
922	+	public void testNeverContainsNull() {
923	+	Collection<?>[] qs = {
924	+	new ArrayBlockingQueue<Object>(10),
925	+	populatedQueue(2),
926	+	};
927	+
928	+	for (Collection<?> q : qs) {
929	+	assertFalse(q.contains(null));
930	+	assertFalse(q.remove(null));
931	+	}
932	+	}
933		}

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