| 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 |
|
|
| 601 |
|
} |
| 602 |
|
} |
| 603 |
|
|
| 604 |
< |
void checkToArray(ArrayBlockingQueue q) { |
| 604 |
> |
void checkToArray(ArrayBlockingQueue<Integer> q) { |
| 605 |
|
int size = q.size(); |
| 606 |
< |
Object[] o = q.toArray(); |
| 607 |
< |
assertEquals(size, o.length); |
| 606 |
> |
Object[] a1 = q.toArray(); |
| 607 |
> |
assertEquals(size, a1.length); |
| 608 |
> |
Integer[] a2 = q.toArray(new Integer[0]); |
| 609 |
> |
assertEquals(size, a2.length); |
| 610 |
> |
Integer[] a3 = q.toArray(new Integer[Math.max(0, size - 1)]); |
| 611 |
> |
assertEquals(size, a3.length); |
| 612 |
> |
Integer[] a4 = new Integer[size]; |
| 613 |
> |
assertSame(a4, q.toArray(a4)); |
| 614 |
> |
Integer[] a5 = new Integer[size + 1]; |
| 615 |
> |
Arrays.fill(a5, 42); |
| 616 |
> |
assertSame(a5, q.toArray(a5)); |
| 617 |
> |
Integer[] a6 = new Integer[size + 2]; |
| 618 |
> |
Arrays.fill(a6, 42); |
| 619 |
> |
assertSame(a6, q.toArray(a6)); |
| 620 |
> |
Object[][] as = { a1, a2, a3, a4, a5, a6 }; |
| 621 |
> |
for (Object[] a : as) { |
| 622 |
> |
if (a.length > size) assertNull(a[size]); |
| 623 |
> |
if (a.length > size + 1) assertEquals(42, a[size + 1]); |
| 624 |
> |
} |
| 625 |
|
Iterator it = q.iterator(); |
| 626 |
+ |
Integer s = q.peek(); |
| 627 |
|
for (int i = 0; i < size; i++) { |
| 628 |
|
Integer x = (Integer) it.next(); |
| 629 |
< |
assertEquals((Integer)o[0] + i, (int) x); |
| 630 |
< |
assertSame(o[i], x); |
| 629 |
> |
assertEquals(s + i, (int) x); |
| 630 |
> |
for (Object[] a : as) |
| 631 |
> |
assertSame(a1[i], x); |
| 632 |
|
} |
| 633 |
|
} |
| 634 |
|
|
| 635 |
|
/** |
| 636 |
< |
* toArray() contains all elements in FIFO order |
| 636 |
> |
* toArray() and toArray(a) contain all elements in FIFO order |
| 637 |
|
*/ |
| 638 |
|
public void testToArray() { |
| 639 |
< |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
| 640 |
< |
for (int i = 0; i < SIZE; i++) { |
| 639 |
> |
final ThreadLocalRandom rnd = ThreadLocalRandom.current(); |
| 640 |
> |
final int size = rnd.nextInt(6); |
| 641 |
> |
final int capacity = Math.max(1, size + rnd.nextInt(size + 1)); |
| 642 |
> |
ArrayBlockingQueue<Integer> q = new ArrayBlockingQueue<>(capacity); |
| 643 |
> |
for (int i = 0; i < size; i++) { |
| 644 |
|
checkToArray(q); |
| 645 |
|
q.add(i); |
| 646 |
|
} |
| 647 |
|
// Provoke wraparound |
| 648 |
< |
for (int i = 0; i < SIZE; i++) { |
| 649 |
< |
checkToArray(q); |
| 627 |
< |
assertEquals(i, q.poll()); |
| 628 |
< |
checkToArray(q); |
| 629 |
< |
q.add(SIZE + i); |
| 630 |
< |
} |
| 631 |
< |
for (int i = 0; i < SIZE; i++) { |
| 648 |
> |
int added = size * 2; |
| 649 |
> |
for (int i = 0; i < added; i++) { |
| 650 |
|
checkToArray(q); |
| 651 |
< |
assertEquals(SIZE + i, q.poll()); |
| 651 |
> |
assertEquals((Integer) i, q.poll()); |
| 652 |
> |
q.add(size + i); |
| 653 |
|
} |
| 635 |
– |
} |
| 636 |
– |
|
| 637 |
– |
void checkToArray2(ArrayBlockingQueue q) { |
| 638 |
– |
int size = q.size(); |
| 639 |
– |
Integer[] a1 = (size == 0) ? null : new Integer[size - 1]; |
| 640 |
– |
Integer[] a2 = new Integer[size]; |
| 641 |
– |
Integer[] a3 = new Integer[size + 2]; |
| 642 |
– |
if (size > 0) Arrays.fill(a1, 42); |
| 643 |
– |
Arrays.fill(a2, 42); |
| 644 |
– |
Arrays.fill(a3, 42); |
| 645 |
– |
Integer[] b1 = (size == 0) ? null : (Integer[]) q.toArray(a1); |
| 646 |
– |
Integer[] b2 = (Integer[]) q.toArray(a2); |
| 647 |
– |
Integer[] b3 = (Integer[]) q.toArray(a3); |
| 648 |
– |
assertSame(a2, b2); |
| 649 |
– |
assertSame(a3, b3); |
| 650 |
– |
Iterator it = q.iterator(); |
| 654 |
|
for (int i = 0; i < size; i++) { |
| 655 |
< |
Integer x = (Integer) it.next(); |
| 656 |
< |
assertSame(b1[i], x); |
| 654 |
< |
assertEquals(b1[0] + i, (int) x); |
| 655 |
< |
assertSame(b2[i], x); |
| 656 |
< |
assertSame(b3[i], x); |
| 657 |
< |
} |
| 658 |
< |
assertNull(a3[size]); |
| 659 |
< |
assertEquals(42, (int) a3[size + 1]); |
| 660 |
< |
if (size > 0) { |
| 661 |
< |
assertNotSame(a1, b1); |
| 662 |
< |
assertEquals(size, b1.length); |
| 663 |
< |
for (int i = 0; i < a1.length; i++) { |
| 664 |
< |
assertEquals(42, (int) a1[i]); |
| 665 |
< |
} |
| 666 |
< |
} |
| 667 |
< |
} |
| 668 |
< |
|
| 669 |
< |
/** |
| 670 |
< |
* toArray(a) contains all elements in FIFO order |
| 671 |
< |
*/ |
| 672 |
< |
public void testToArray2() { |
| 673 |
< |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
| 674 |
< |
for (int i = 0; i < SIZE; i++) { |
| 675 |
< |
checkToArray2(q); |
| 676 |
< |
q.add(i); |
| 677 |
< |
} |
| 678 |
< |
// Provoke wraparound |
| 679 |
< |
for (int i = 0; i < SIZE; i++) { |
| 680 |
< |
checkToArray2(q); |
| 681 |
< |
assertEquals(i, q.poll()); |
| 682 |
< |
checkToArray2(q); |
| 683 |
< |
q.add(SIZE + i); |
| 684 |
< |
} |
| 685 |
< |
for (int i = 0; i < SIZE; i++) { |
| 686 |
< |
checkToArray2(q); |
| 687 |
< |
assertEquals(SIZE + i, q.poll()); |
| 655 |
> |
checkToArray(q); |
| 656 |
> |
assertEquals((Integer) (added + i), q.poll()); |
| 657 |
|
} |
| 658 |
|
} |
| 659 |
|
|
| 660 |
|
/** |
| 661 |
|
* toArray(incompatible array type) throws ArrayStoreException |
| 662 |
|
*/ |
| 663 |
< |
public void testToArray1_BadArg() { |
| 663 |
> |
public void testToArray_incompatibleArrayType() { |
| 664 |
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
| 665 |
|
try { |
| 666 |
|
q.toArray(new String[10]); |
| 667 |
|
shouldThrow(); |
| 668 |
|
} catch (ArrayStoreException success) {} |
| 669 |
+ |
try { |
| 670 |
+ |
q.toArray(new String[0]); |
| 671 |
+ |
shouldThrow(); |
| 672 |
+ |
} catch (ArrayStoreException success) {} |
| 673 |
|
} |
| 674 |
|
|
| 675 |
|
/** |
