| 19 |
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import java.util.concurrent.CountDownLatch; |
| 20 |
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import java.util.concurrent.Executors; |
| 21 |
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import java.util.concurrent.ExecutorService; |
| 22 |
+ |
import java.util.concurrent.ThreadLocalRandom; |
| 23 |
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|
| 24 |
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import junit.framework.Test; |
| 25 |
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|
| 26 |
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public class ArrayBlockingQueueTest extends JSR166TestCase { |
| 27 |
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|
| 28 |
+ |
public static void main(String[] args) { |
| 29 |
+ |
main(suite(), args); |
| 30 |
+ |
} |
| 31 |
+ |
|
| 32 |
+ |
public static Test suite() { |
| 33 |
+ |
class Implementation implements CollectionImplementation { |
| 34 |
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public Class<?> klazz() { return ArrayBlockingQueue.class; } |
| 35 |
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public Collection emptyCollection() { |
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boolean fair = ThreadLocalRandom.current().nextBoolean(); |
| 37 |
+ |
return populatedQueue(0, SIZE, 2 * SIZE, fair); |
| 38 |
+ |
} |
| 39 |
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public Object makeElement(int i) { return i; } |
| 40 |
+ |
public boolean isConcurrent() { return true; } |
| 41 |
+ |
public boolean permitsNulls() { return false; } |
| 42 |
+ |
} |
| 43 |
+ |
|
| 44 |
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return newTestSuite( |
| 45 |
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ArrayBlockingQueueTest.class, |
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new Fair().testSuite(), |
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new NonFair().testSuite(), |
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CollectionTest.testSuite(new Implementation())); |
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+ |
} |
| 50 |
+ |
|
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public static class Fair extends BlockingQueueTest { |
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protected BlockingQueue emptyCollection() { |
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< |
return new ArrayBlockingQueue(SIZE, true); |
| 53 |
> |
return populatedQueue(0, SIZE, 2 * SIZE, true); |
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} |
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} |
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|
| 57 |
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public static class NonFair extends BlockingQueueTest { |
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protected BlockingQueue emptyCollection() { |
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< |
return new ArrayBlockingQueue(SIZE, false); |
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> |
return populatedQueue(0, SIZE, 2 * SIZE, false); |
| 60 |
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} |
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} |
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|
| 63 |
< |
public static void main(String[] args) { |
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main(suite(), args); |
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} |
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|
| 67 |
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public static Test suite() { |
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< |
return newTestSuite(ArrayBlockingQueueTest.class, |
| 45 |
< |
new Fair().testSuite(), |
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new NonFair().testSuite()); |
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> |
/** |
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* Returns a new queue of given size containing consecutive |
| 65 |
> |
* Integers 0 ... n - 1. |
| 66 |
> |
*/ |
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> |
static ArrayBlockingQueue<Integer> populatedQueue(int n) { |
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> |
return populatedQueue(n, n, n, false); |
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} |
| 70 |
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|
| 71 |
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/** |
| 72 |
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* Returns a new queue of given size containing consecutive |
| 73 |
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* Integers 0 ... n. |
| 73 |
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* Integers 0 ... n - 1, with given capacity range and fairness. |
| 74 |
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*/ |
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private ArrayBlockingQueue<Integer> populatedQueue(int n) { |
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ArrayBlockingQueue<Integer> q = new ArrayBlockingQueue<Integer>(n); |
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> |
static ArrayBlockingQueue<Integer> populatedQueue( |
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> |
int size, int minCapacity, int maxCapacity, boolean fair) { |
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> |
ThreadLocalRandom rnd = ThreadLocalRandom.current(); |
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> |
int capacity = rnd.nextInt(minCapacity, maxCapacity + 1); |
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ArrayBlockingQueue<Integer> q = new ArrayBlockingQueue<>(capacity); |
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assertTrue(q.isEmpty()); |
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for (int i = 0; i < n; i++) |
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assertTrue(q.offer(new Integer(i))); |
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assertFalse(q.isEmpty()); |
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assertEquals(0, q.remainingCapacity()); |
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assertEquals(n, q.size()); |
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// shuffle circular array elements so they wrap |
| 82 |
> |
{ |
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> |
int n = rnd.nextInt(capacity); |
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> |
for (int i = 0; i < n; i++) q.add(42); |
| 85 |
> |
for (int i = 0; i < n; i++) q.remove(); |
| 86 |
> |
} |
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> |
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()); |
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> |
if (size > 0) |
| 93 |
> |
assertEquals((Integer) 0, q.peek()); |
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return q; |
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} |
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|
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final CountDownLatch aboutToWait = new CountDownLatch(1); |
| 485 |
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Thread t = newStartedThread(new CheckedRunnable() { |
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public void realRun() throws InterruptedException { |
| 487 |
+ |
long startTime = System.nanoTime(); |
| 488 |
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for (int i = 0; i < SIZE; ++i) { |
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long t0 = System.nanoTime(); |
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assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
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assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS); |
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} |
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long t0 = System.nanoTime(); |
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aboutToWait.countDown(); |
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try { |
| 493 |
< |
q.poll(MEDIUM_DELAY_MS, MILLISECONDS); |
| 493 |
> |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
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shouldThrow(); |
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} catch (InterruptedException success) { |
| 496 |
< |
assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS); |
| 496 |
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assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
| 497 |
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} |
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}}); |
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|
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aboutToWait.await(); |
| 501 |
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waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
| 500 |
> |
await(aboutToWait); |
| 501 |
> |
waitForThreadToEnterWaitState(t); |
| 502 |
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t.interrupt(); |
| 503 |
< |
awaitTermination(t, MEDIUM_DELAY_MS); |
| 503 |
> |
awaitTermination(t); |
| 504 |
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checkEmpty(q); |
| 505 |
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} |
| 506 |
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|
| 624 |
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} |
| 625 |
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} |
| 626 |
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|
| 627 |
< |
void checkToArray(ArrayBlockingQueue q) { |
| 627 |
> |
void checkToArray(ArrayBlockingQueue<Integer> q) { |
| 628 |
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int size = q.size(); |
| 629 |
< |
Object[] o = q.toArray(); |
| 630 |
< |
assertEquals(size, o.length); |
| 629 |
> |
Object[] a1 = q.toArray(); |
| 630 |
> |
assertEquals(size, a1.length); |
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> |
Integer[] a2 = q.toArray(new Integer[0]); |
| 632 |
> |
assertEquals(size, a2.length); |
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> |
Integer[] a3 = q.toArray(new Integer[Math.max(0, size - 1)]); |
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> |
assertEquals(size, a3.length); |
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Integer[] a4 = new Integer[size]; |
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assertSame(a4, q.toArray(a4)); |
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Integer[] a5 = new Integer[size + 1]; |
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> |
Arrays.fill(a5, 42); |
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> |
assertSame(a5, q.toArray(a5)); |
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> |
Integer[] a6 = new Integer[size + 2]; |
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> |
Arrays.fill(a6, 42); |
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assertSame(a6, q.toArray(a6)); |
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Object[][] as = { a1, a2, a3, a4, a5, a6 }; |
| 644 |
> |
for (Object[] a : as) { |
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> |
if (a.length > size) assertNull(a[size]); |
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> |
if (a.length > size + 1) assertEquals(42, a[size + 1]); |
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> |
} |
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Iterator it = q.iterator(); |
| 649 |
+ |
Integer s = q.peek(); |
| 650 |
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for (int i = 0; i < size; i++) { |
| 651 |
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Integer x = (Integer) it.next(); |
| 652 |
< |
assertEquals((Integer)o[0] + i, (int) x); |
| 653 |
< |
assertSame(o[i], x); |
| 652 |
> |
assertEquals(s + i, (int) x); |
| 653 |
> |
for (Object[] a : as) |
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> |
assertSame(a1[i], x); |
| 655 |
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} |
| 656 |
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} |
| 657 |
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|
| 658 |
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/** |
| 659 |
< |
* toArray() contains all elements in FIFO order |
| 659 |
> |
* toArray() and toArray(a) contain all elements in FIFO order |
| 660 |
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*/ |
| 661 |
|
public void testToArray() { |
| 662 |
< |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
| 663 |
< |
for (int i = 0; i < SIZE; i++) { |
| 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 |
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checkToArray(q); |
| 668 |
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q.add(i); |
| 669 |
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} |
| 670 |
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// Provoke wraparound |
| 671 |
< |
for (int i = 0; i < SIZE; i++) { |
| 671 |
> |
int added = size * 2; |
| 672 |
> |
for (int i = 0; i < added; i++) { |
| 673 |
|
checkToArray(q); |
| 674 |
< |
assertEquals(i, q.poll()); |
| 675 |
< |
checkToArray(q); |
| 622 |
< |
q.add(SIZE + i); |
| 623 |
< |
} |
| 624 |
< |
for (int i = 0; i < SIZE; i++) { |
| 625 |
< |
checkToArray(q); |
| 626 |
< |
assertEquals(SIZE + i, q.poll()); |
| 674 |
> |
assertEquals((Integer) i, q.poll()); |
| 675 |
> |
q.add(size + i); |
| 676 |
|
} |
| 628 |
– |
} |
| 629 |
– |
|
| 630 |
– |
void checkToArray2(ArrayBlockingQueue q) { |
| 631 |
– |
int size = q.size(); |
| 632 |
– |
Integer[] a1 = (size == 0) ? null : new Integer[size - 1]; |
| 633 |
– |
Integer[] a2 = new Integer[size]; |
| 634 |
– |
Integer[] a3 = new Integer[size + 2]; |
| 635 |
– |
if (size > 0) Arrays.fill(a1, 42); |
| 636 |
– |
Arrays.fill(a2, 42); |
| 637 |
– |
Arrays.fill(a3, 42); |
| 638 |
– |
Integer[] b1 = (size == 0) ? null : (Integer[]) q.toArray(a1); |
| 639 |
– |
Integer[] b2 = (Integer[]) q.toArray(a2); |
| 640 |
– |
Integer[] b3 = (Integer[]) q.toArray(a3); |
| 641 |
– |
assertSame(a2, b2); |
| 642 |
– |
assertSame(a3, b3); |
| 643 |
– |
Iterator it = q.iterator(); |
| 677 |
|
for (int i = 0; i < size; i++) { |
| 678 |
< |
Integer x = (Integer) it.next(); |
| 679 |
< |
assertSame(b1[i], x); |
| 647 |
< |
assertEquals(b1[0] + i, (int) x); |
| 648 |
< |
assertSame(b2[i], x); |
| 649 |
< |
assertSame(b3[i], x); |
| 650 |
< |
} |
| 651 |
< |
assertNull(a3[size]); |
| 652 |
< |
assertEquals(42, (int) a3[size + 1]); |
| 653 |
< |
if (size > 0) { |
| 654 |
< |
assertNotSame(a1, b1); |
| 655 |
< |
assertEquals(size, b1.length); |
| 656 |
< |
for (int i = 0; i < a1.length; i++) { |
| 657 |
< |
assertEquals(42, (int) a1[i]); |
| 658 |
< |
} |
| 659 |
< |
} |
| 660 |
< |
} |
| 661 |
< |
|
| 662 |
< |
/** |
| 663 |
< |
* toArray(a) contains all elements in FIFO order |
| 664 |
< |
*/ |
| 665 |
< |
public void testToArray2() { |
| 666 |
< |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
| 667 |
< |
for (int i = 0; i < SIZE; i++) { |
| 668 |
< |
checkToArray2(q); |
| 669 |
< |
q.add(i); |
| 670 |
< |
} |
| 671 |
< |
// Provoke wraparound |
| 672 |
< |
for (int i = 0; i < SIZE; i++) { |
| 673 |
< |
checkToArray2(q); |
| 674 |
< |
assertEquals(i, q.poll()); |
| 675 |
< |
checkToArray2(q); |
| 676 |
< |
q.add(SIZE + i); |
| 677 |
< |
} |
| 678 |
< |
for (int i = 0; i < SIZE; i++) { |
| 679 |
< |
checkToArray2(q); |
| 680 |
< |
assertEquals(SIZE + i, q.poll()); |
| 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 |
|
|
| 698 |
|
/** |
