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

Comparing jsr166/src/test/tck/LinkedBlockingQueueTest.java (file contents):
Revision 1.46 by jsr166, Tue May 31 16:16:24 2011 UTC vs.
Revision 1.77 by jsr166, Sun Jan 7 22:59:18 2018 UTC

#	Line 6 | Line 6
6		* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.Arrays;
9	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
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.BlockingQueue;
18		import java.util.concurrent.CountDownLatch;
18	–	import java.util.concurrent.LinkedBlockingQueue;
19		import java.util.concurrent.Executors;
20		import java.util.concurrent.ExecutorService;
21	<	import static java.util.concurrent.TimeUnit.MILLISECONDS;
21	>	import java.util.concurrent.LinkedBlockingQueue;
22	>
23	>	import junit.framework.Test;
24
25		public class LinkedBlockingQueueTest extends JSR166TestCase {
26
#	Line 30 | Line 32 | public class LinkedBlockingQueueTest ext
32
33		public static class Bounded extends BlockingQueueTest {
34		protected BlockingQueue emptyCollection() {
35	<	return new LinkedBlockingQueue(20);
35	>	return new LinkedBlockingQueue(SIZE);
36		}
37		}
38
39		public static void main(String[] args) {
40	<	junit.textui.TestRunner.run(suite());
40	>	main(suite(), args);
41		}
42
43		public static Test suite() {
44	+	class Implementation implements CollectionImplementation {
45	+	public Class<?> klazz() { return LinkedBlockingQueue.class; }
46	+	public Collection emptyCollection() { return new LinkedBlockingQueue(); }
47	+	public Object makeElement(int i) { return i; }
48	+	public boolean isConcurrent() { return true; }
49	+	public boolean permitsNulls() { return false; }
50	+	}
51		return newTestSuite(LinkedBlockingQueueTest.class,
52		new Unbounded().testSuite(),
53	<	new Bounded().testSuite());
53	>	new Bounded().testSuite(),
54	>	CollectionTest.testSuite(new Implementation()));
55		}
56
57		/**
58	<	* Create a queue of given size containing consecutive
59	<	* Integers 0 ... n.
58	>	* Returns a new queue of given size containing consecutive
59	>	* Integers 0 ... n - 1.
60		*/
61	<	private LinkedBlockingQueue<Integer> populatedQueue(int n) {
62	<	LinkedBlockingQueue<Integer> q =
53	<	new LinkedBlockingQueue<Integer>(n);
61	>	private static LinkedBlockingQueue<Integer> populatedQueue(int n) {
62	>	LinkedBlockingQueue<Integer> q = new LinkedBlockingQueue<>(n);
63		assertTrue(q.isEmpty());
64		for (int i = 0; i < n; i++)
65		assertTrue(q.offer(new Integer(i)));
66		assertFalse(q.isEmpty());
67		assertEquals(0, q.remainingCapacity());
68		assertEquals(n, q.size());
69	+	assertEquals((Integer) 0, q.peek());
70		return q;
71		}
72
#	Line 106 | Line 116 | public class LinkedBlockingQueueTest ext
116		*/
117		public void testConstructor5() {
118		Integer[] ints = new Integer[SIZE];
119	<	for (int i = 0; i < SIZE-1; ++i)
119	>	for (int i = 0; i < SIZE - 1; ++i)
120		ints[i] = new Integer(i);
121		Collection<Integer> elements = Arrays.asList(ints);
122		try {
#	Line 146 | Line 156 | public class LinkedBlockingQueueTest ext
156		* remainingCapacity decreases on add, increases on remove
157		*/
158		public void testRemainingCapacity() {
159	<	LinkedBlockingQueue q = populatedQueue(SIZE);
159	>	BlockingQueue q = populatedQueue(SIZE);
160		for (int i = 0; i < SIZE; ++i) {
161		assertEquals(i, q.remainingCapacity());
162	<	assertEquals(SIZE-i, q.size());
163	<	q.remove();
162	>	assertEquals(SIZE, q.size() + q.remainingCapacity());
163	>	assertEquals(i, q.remove());
164		}
165		for (int i = 0; i < SIZE; ++i) {
166	<	assertEquals(SIZE-i, q.remainingCapacity());
167	<	assertEquals(i, q.size());
168	<	q.add(new Integer(i));
166	>	assertEquals(SIZE - i, q.remainingCapacity());
167	>	assertEquals(SIZE, q.size() + q.remainingCapacity());
168	>	assertTrue(q.add(i));
169		}
170		}
171
#	Line 200 | Line 210 | public class LinkedBlockingQueueTest ext
210		public void testAddAll3() {
211		LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
212		Integer[] ints = new Integer[SIZE];
213	<	for (int i = 0; i < SIZE-1; ++i)
213	>	for (int i = 0; i < SIZE - 1; ++i)
214		ints[i] = new Integer(i);
215		Collection<Integer> elements = Arrays.asList(ints);
216		try {
#	Line 245 | Line 255 | public class LinkedBlockingQueueTest ext
255		public void testPut() throws InterruptedException {
256		LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
257		for (int i = 0; i < SIZE; ++i) {
258	<	Integer I = new Integer(i);
259	<	q.put(I);
260	<	assertTrue(q.contains(I));
258	>	Integer x = new Integer(i);
259	>	q.put(x);
260	>	assertTrue(q.contains(x));
261		}
262		assertEquals(0, q.remainingCapacity());
263		}
#	Line 281 | Line 291 | public class LinkedBlockingQueueTest ext
291		}});
292
293		await(pleaseInterrupt);
294	<	assertThreadStaysAlive(t);
294	>	assertThreadBlocks(t, Thread.State.WAITING);
295		t.interrupt();
296		awaitTermination(t);
297		assertEquals(SIZE, q.size());
#	Line 303 | Line 313 | public class LinkedBlockingQueueTest ext
313		pleaseTake.countDown();
314		q.put(86);
315
316	+	Thread.currentThread().interrupt();
317	+	try {
318	+	q.put(99);
319	+	shouldThrow();
320	+	} catch (InterruptedException success) {}
321	+	assertFalse(Thread.interrupted());
322	+
323		pleaseInterrupt.countDown();
324		try {
325		q.put(99);
#	Line 312 | Line 329 | public class LinkedBlockingQueueTest ext
329		}});
330
331		await(pleaseTake);
332	<	assertEquals(q.remainingCapacity(), 0);
332	>	assertEquals(0, q.remainingCapacity());
333		assertEquals(0, q.take());
334
335		await(pleaseInterrupt);
336	<	assertThreadStaysAlive(t);
336	>	assertThreadBlocks(t, Thread.State.WAITING);
337		t.interrupt();
338		awaitTermination(t);
339	<	assertEquals(q.remainingCapacity(), 0);
339	>	assertEquals(0, q.remainingCapacity());
340		}
341
342		/**
#	Line 332 | Line 349 | public class LinkedBlockingQueueTest ext
349		public void realRun() throws InterruptedException {
350		q.put(new Object());
351		q.put(new Object());
352	+
353		long startTime = System.nanoTime();
354		assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS));
355		assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
356	+
357	+	Thread.currentThread().interrupt();
358	+	try {
359	+	q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS);
360	+	shouldThrow();
361	+	} catch (InterruptedException success) {}
362	+	assertFalse(Thread.interrupted());
363	+
364		pleaseInterrupt.countDown();
365		try {
366		q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS);
367		shouldThrow();
368		} catch (InterruptedException success) {}
369	+	assertFalse(Thread.interrupted());
370		}});
371
372		await(pleaseInterrupt);
373	<	assertThreadStaysAlive(t);
373	>	assertThreadBlocks(t, Thread.State.TIMED_WAITING);
374		t.interrupt();
375		awaitTermination(t);
376		}
#	Line 366 | Line 393 | public class LinkedBlockingQueueTest ext
393		final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
394		Thread t = newStartedThread(new CheckedRunnable() {
395		public void realRun() throws InterruptedException {
396	<	for (int i = 0; i < SIZE; ++i) {
370	<	assertEquals(i, q.take());
371	<	}
396	>	for (int i = 0; i < SIZE; i++) assertEquals(i, q.take());
397
398		Thread.currentThread().interrupt();
399		try {
#	Line 386 | Line 411 | public class LinkedBlockingQueueTest ext
411		}});
412
413		await(pleaseInterrupt);
414	<	assertThreadStaysAlive(t);
414	>	assertThreadBlocks(t, Thread.State.WAITING);
415		t.interrupt();
416		awaitTermination(t);
417		}
#	Line 435 | Line 460 | public class LinkedBlockingQueueTest ext
460		*/
461		public void testInterruptedTimedPoll() throws InterruptedException {
462		final BlockingQueue<Integer> q = populatedQueue(SIZE);
463	<	final CountDownLatch aboutToWait = new CountDownLatch(1);
463	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
464		Thread t = newStartedThread(new CheckedRunnable() {
465		public void realRun() throws InterruptedException {
466	<	for (int i = 0; i < SIZE; ++i) {
467	<	long t0 = System.nanoTime();
466	>	long startTime = System.nanoTime();
467	>	for (int i = 0; i < SIZE; i++)
468		assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
469	<	assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS);
470	<	}
471	<	long t0 = System.nanoTime();
472	<	aboutToWait.countDown();
469	>
470	>	Thread.currentThread().interrupt();
471	>	try {
472	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
473	>	shouldThrow();
474	>	} catch (InterruptedException success) {}
475	>	assertFalse(Thread.interrupted());
476	>
477	>	pleaseInterrupt.countDown();
478		try {
479	<	q.poll(MEDIUM_DELAY_MS, MILLISECONDS);
479	>	q.poll(LONG_DELAY_MS, MILLISECONDS);
480		shouldThrow();
481	<	} catch (InterruptedException success) {
482	<	assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS);
483	<	}
481	>	} catch (InterruptedException success) {}
482	>	assertFalse(Thread.interrupted());
483	>
484	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
485		}});
486
487	<	aboutToWait.await();
488	<	waitForThreadToEnterWaitState(t, SMALL_DELAY_MS);
487	>	await(pleaseInterrupt);
488	>	assertThreadBlocks(t, Thread.State.TIMED_WAITING);
489		t.interrupt();
490	<	awaitTermination(t, MEDIUM_DELAY_MS);
490	>	awaitTermination(t);
491		checkEmpty(q);
492		}
493
#	Line 504 | Line 535 | public class LinkedBlockingQueueTest ext
535		}
536
537		/**
507	–	* remove(x) removes x and returns true if present
508	–	*/
509	–	public void testRemoveElement() {
510	–	LinkedBlockingQueue q = populatedQueue(SIZE);
511	–	for (int i = 1; i < SIZE; i+=2) {
512	–	assertTrue(q.contains(i));
513	–	assertTrue(q.remove(i));
514	–	assertFalse(q.contains(i));
515	–	assertTrue(q.contains(i-1));
516	–	}
517	–	for (int i = 0; i < SIZE; i+=2) {
518	–	assertTrue(q.contains(i));
519	–	assertTrue(q.remove(i));
520	–	assertFalse(q.contains(i));
521	–	assertFalse(q.remove(i+1));
522	–	assertFalse(q.contains(i+1));
523	–	}
524	–	assertTrue(q.isEmpty());
525	–	}
526	–
527	–	/**
538		* An add following remove(x) succeeds
539		*/
540		public void testRemoveElementAndAdd() throws InterruptedException {
#	Line 534 | Line 544 | public class LinkedBlockingQueueTest ext
544		assertTrue(q.remove(new Integer(1)));
545		assertTrue(q.remove(new Integer(2)));
546		assertTrue(q.add(new Integer(3)));
547	<	assertTrue(q.take() != null);
547	>	assertNotNull(q.take());
548		}
549
550		/**
#	Line 593 | Line 603 | public class LinkedBlockingQueueTest ext
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 LinkedBlockingQueueTest ext
616		LinkedBlockingQueue q = populatedQueue(SIZE);
617		LinkedBlockingQueue 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		}
#	Line 653 | Line 663 | public class LinkedBlockingQueueTest ext
663		public void testIterator() throws InterruptedException {
664		LinkedBlockingQueue q = populatedQueue(SIZE);
665		Iterator it = q.iterator();
666	<	while (it.hasNext()) {
666	>	int i;
667	>	for (i = 0; it.hasNext(); i++)
668	>	assertTrue(q.contains(it.next()));
669	>	assertEquals(i, SIZE);
670	>	assertIteratorExhausted(it);
671	>
672	>	it = q.iterator();
673	>	for (i = 0; it.hasNext(); i++)
674		assertEquals(it.next(), q.take());
675	<	}
675	>	assertEquals(i, SIZE);
676	>	assertIteratorExhausted(it);
677	>	}
678	>
679	>	/**
680	>	* iterator of empty collection has no elements
681	>	*/
682	>	public void testEmptyIterator() {
683	>	assertIteratorExhausted(new LinkedBlockingQueue().iterator());
684		}
685
686		/**
#	Line 726 | Line 751 | public class LinkedBlockingQueueTest ext
751		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
752		q.add(one);
753		q.add(two);
729	–	ExecutorService executor = Executors.newFixedThreadPool(2);
754		final CheckedBarrier threadsStarted = new CheckedBarrier(2);
755	<	executor.execute(new CheckedRunnable() {
756	<	public void realRun() throws InterruptedException {
757	<	assertFalse(q.offer(three));
758	<	threadsStarted.await();
759	<	assertTrue(q.offer(three, LONG_DELAY_MS, MILLISECONDS));
760	<	assertEquals(0, q.remainingCapacity());
761	<	}});
762	<
763	<	executor.execute(new CheckedRunnable() {
764	<	public void realRun() throws InterruptedException {
765	<	threadsStarted.await();
766	<	assertSame(one, q.take());
767	<	}});
768	<
769	<	joinPool(executor);
755	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
756	>	try (PoolCleaner cleaner = cleaner(executor)) {
757	>	executor.execute(new CheckedRunnable() {
758	>	public void realRun() throws InterruptedException {
759	>	assertFalse(q.offer(three));
760	>	threadsStarted.await();
761	>	assertTrue(q.offer(three, LONG_DELAY_MS, MILLISECONDS));
762	>	assertEquals(0, q.remainingCapacity());
763	>	}});
764	>
765	>	executor.execute(new CheckedRunnable() {
766	>	public void realRun() throws InterruptedException {
767	>	threadsStarted.await();
768	>	assertSame(one, q.take());
769	>	}});
770	>	}
771		}
772
773		/**
#	Line 751 | Line 776 | public class LinkedBlockingQueueTest ext
776		public void testPollInExecutor() {
777		final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
778		final CheckedBarrier threadsStarted = new CheckedBarrier(2);
779	<	ExecutorService executor = Executors.newFixedThreadPool(2);
780	<	executor.execute(new CheckedRunnable() {
781	<	public void realRun() throws InterruptedException {
782	<	assertNull(q.poll());
783	<	threadsStarted.await();
784	<	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
785	<	checkEmpty(q);
786	<	}});
787	<
788	<	executor.execute(new CheckedRunnable() {
789	<	public void realRun() throws InterruptedException {
790	<	threadsStarted.await();
791	<	q.put(one);
792	<	}});
793	<
794	<	joinPool(executor);
779	>	final ExecutorService executor = Executors.newFixedThreadPool(2);
780	>	try (PoolCleaner cleaner = cleaner(executor)) {
781	>	executor.execute(new CheckedRunnable() {
782	>	public void realRun() throws InterruptedException {
783	>	assertNull(q.poll());
784	>	threadsStarted.await();
785	>	assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
786	>	checkEmpty(q);
787	>	}});
788	>
789	>	executor.execute(new CheckedRunnable() {
790	>	public void realRun() throws InterruptedException {
791	>	threadsStarted.await();
792	>	q.put(one);
793	>	}});
794	>	}
795		}
796
797		/**
798	<	* A deserialized serialized queue has same elements in same order
798	>	* A deserialized/reserialized queue has same elements in same order
799		*/
800		public void testSerialization() throws Exception {
801		Queue x = populatedQueue(SIZE);
802		Queue y = serialClone(x);
803
804	<	assertTrue(x != y);
804	>	assertNotSame(x, y);
805		assertEquals(x.size(), y.size());
806		assertEquals(x.toString(), y.toString());
807		assertTrue(Arrays.equals(x.toArray(), y.toArray()));
#	Line 794 | Line 819 | public class LinkedBlockingQueueTest ext
819		LinkedBlockingQueue q = populatedQueue(SIZE);
820		ArrayList l = new ArrayList();
821		q.drainTo(l);
822	<	assertEquals(q.size(), 0);
823	<	assertEquals(l.size(), SIZE);
822	>	assertEquals(0, q.size());
823	>	assertEquals(SIZE, l.size());
824		for (int i = 0; i < SIZE; ++i)
825		assertEquals(l.get(i), new Integer(i));
826		q.add(zero);
#	Line 805 | Line 830 | public class LinkedBlockingQueueTest ext
830		assertTrue(q.contains(one));
831		l.clear();
832		q.drainTo(l);
833	<	assertEquals(q.size(), 0);
834	<	assertEquals(l.size(), 2);
833	>	assertEquals(0, q.size());
834	>	assertEquals(2, l.size());
835		for (int i = 0; i < 2; ++i)
836		assertEquals(l.get(i), new Integer(i));
837		}
#	Line 818 | Line 843 | public class LinkedBlockingQueueTest ext
843		final LinkedBlockingQueue q = populatedQueue(SIZE);
844		Thread t = new Thread(new CheckedRunnable() {
845		public void realRun() throws InterruptedException {
846	<	q.put(new Integer(SIZE+1));
846	>	q.put(new Integer(SIZE + 1));
847		}});
848
849		t.start();
#	Line 842 | Line 867 | public class LinkedBlockingQueueTest ext
867		ArrayList l = new ArrayList();
868		q.drainTo(l, i);
869		int k = (i < SIZE) ? i : SIZE;
870	<	assertEquals(l.size(), k);
871	<	assertEquals(q.size(), SIZE-k);
870	>	assertEquals(k, l.size());
871	>	assertEquals(SIZE - k, q.size());
872		for (int j = 0; j < k; ++j)
873		assertEquals(l.get(j), new Integer(j));
874	<	while (q.poll() != null) ;
874	>	do {} while (q.poll() != null);
875	>	}
876	>	}
877	>
878	>	/**
879	>	* remove(null), contains(null) always return false
880	>	*/
881	>	public void testNeverContainsNull() {
882	>	Collection<?>[] qs = {
883	>	new LinkedBlockingQueue<Object>(),
884	>	populatedQueue(2),
885	>	};
886	>
887	>	for (Collection<?> q : qs) {
888	>	assertFalse(q.contains(null));
889	>	assertFalse(q.remove(null));
890		}
891		}
892

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