| 1 |
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/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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< |
* http://creativecommons.org/licenses/publicdomain |
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> |
* http://creativecommons.org/publicdomain/zero/1.0/ |
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*/ |
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import junit.framework.*; |
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< |
import java.util.*; |
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< |
import java.util.concurrent.*; |
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< |
import java.io.*; |
| 8 |
> |
import java.util.Arrays; |
| 9 |
> |
import java.util.BitSet; |
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> |
import java.util.Collection; |
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> |
import java.util.Comparator; |
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> |
import java.util.Iterator; |
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> |
import java.util.NavigableSet; |
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> |
import java.util.NoSuchElementException; |
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> |
import java.util.Random; |
| 16 |
> |
import java.util.Set; |
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> |
import java.util.SortedSet; |
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> |
import java.util.concurrent.ConcurrentSkipListSet; |
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public class ConcurrentSkipListSetTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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} |
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|
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/** |
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< |
* Create a set of given size containing consecutive |
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> |
* Returns a new set of given size containing consecutive |
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* Integers 0 ... n. |
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*/ |
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< |
private ConcurrentSkipListSet populatedSet(int n) { |
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< |
ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
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> |
private ConcurrentSkipListSet<Integer> populatedSet(int n) { |
| 39 |
> |
ConcurrentSkipListSet<Integer> q = |
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> |
new ConcurrentSkipListSet<Integer>(); |
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assertTrue(q.isEmpty()); |
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for (int i = n-1; i >= 0; i-=2) |
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assertTrue(q.add(new Integer(i))); |
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} |
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|
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/** |
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< |
* Create set of first 5 ints |
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> |
* Returns a new set of first 5 ints. |
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*/ |
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private ConcurrentSkipListSet set5() { |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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+ |
|
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/** |
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* addAll of a collection with null elements throws NPE |
| 218 |
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*/ |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
| 226 |
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} |
| 227 |
+ |
|
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/** |
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* addAll of a collection with any null elements throws NPE after |
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* possibly adding some elements |
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assertNull(q.pollFirst()); |
| 278 |
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} |
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|
| 269 |
– |
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/** |
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* remove(x) removes x and returns true if present |
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*/ |
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public void testRemoveElement() { |
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ConcurrentSkipListSet q = populatedSet(SIZE); |
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for (int i = 1; i < SIZE; i+=2) { |
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< |
assertTrue(q.remove(new Integer(i))); |
| 286 |
> |
assertTrue(q.contains(i)); |
| 287 |
> |
assertTrue(q.remove(i)); |
| 288 |
> |
assertFalse(q.contains(i)); |
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> |
assertTrue(q.contains(i-1)); |
| 290 |
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} |
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for (int i = 0; i < SIZE; i+=2) { |
| 292 |
< |
assertTrue(q.remove(new Integer(i))); |
| 293 |
< |
assertFalse(q.remove(new Integer(i+1))); |
| 292 |
> |
assertTrue(q.contains(i)); |
| 293 |
> |
assertTrue(q.remove(i)); |
| 294 |
> |
assertFalse(q.contains(i)); |
| 295 |
> |
assertFalse(q.remove(i+1)); |
| 296 |
> |
assertFalse(q.contains(i+1)); |
| 297 |
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} |
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assertTrue(q.isEmpty()); |
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} |
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} |
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} |
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|
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– |
|
| 361 |
– |
|
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/** |
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* lower returns preceding element |
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*/ |
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} |
| 447 |
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|
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/** |
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< |
* toArray contains all elements |
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> |
* toArray contains all elements in sorted order |
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*/ |
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public void testToArray() { |
| 452 |
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ConcurrentSkipListSet q = populatedSet(SIZE); |
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Object[] o = q.toArray(); |
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– |
Arrays.sort(o); |
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for (int i = 0; i < o.length; i++) |
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< |
assertEquals(o[i], q.pollFirst()); |
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> |
assertSame(o[i], q.pollFirst()); |
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} |
| 457 |
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|
| 458 |
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/** |
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< |
* toArray(a) contains all elements |
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> |
* toArray(a) contains all elements in sorted order |
| 460 |
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*/ |
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public void testToArray2() { |
| 462 |
< |
ConcurrentSkipListSet q = populatedSet(SIZE); |
| 462 |
> |
ConcurrentSkipListSet<Integer> q = populatedSet(SIZE); |
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Integer[] ints = new Integer[SIZE]; |
| 464 |
< |
ints = (Integer[])q.toArray(ints); |
| 452 |
< |
Arrays.sort(ints); |
| 464 |
> |
assertSame(ints, q.toArray(ints)); |
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for (int i = 0; i < ints.length; i++) |
| 466 |
< |
assertEquals(ints[i], q.pollFirst()); |
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> |
assertSame(ints[i], q.pollFirst()); |
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} |
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|
| 469 |
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/** |
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assertTrue(q.contains(it.next())); |
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++i; |
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} |
| 494 |
< |
assertEquals(i, 0); |
| 494 |
> |
assertEquals(0, i); |
| 495 |
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} |
| 496 |
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|
| 497 |
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/** |
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assertFalse(it.hasNext()); |
| 514 |
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} |
| 515 |
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|
| 504 |
– |
|
| 516 |
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/** |
| 517 |
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* toString contains toStrings of elements |
| 518 |
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*/ |
| 520 |
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ConcurrentSkipListSet q = populatedSet(SIZE); |
| 521 |
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String s = q.toString(); |
| 522 |
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for (int i = 0; i < SIZE; ++i) { |
| 523 |
< |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
| 523 |
> |
assertTrue(s.contains(String.valueOf(i))); |
| 524 |
|
} |
| 525 |
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} |
| 526 |
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|
| 528 |
|
* A deserialized serialized set has same elements |
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*/ |
| 530 |
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public void testSerialization() throws Exception { |
| 531 |
< |
ConcurrentSkipListSet q = populatedSet(SIZE); |
| 532 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
| 533 |
< |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
| 534 |
< |
out.writeObject(q); |
| 535 |
< |
out.close(); |
| 536 |
< |
|
| 537 |
< |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
| 538 |
< |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
| 539 |
< |
ConcurrentSkipListSet r = (ConcurrentSkipListSet)in.readObject(); |
| 540 |
< |
assertEquals(q.size(), r.size()); |
| 541 |
< |
while (!q.isEmpty()) |
| 542 |
< |
assertEquals(q.pollFirst(), r.pollFirst()); |
| 531 |
> |
NavigableSet x = populatedSet(SIZE); |
| 532 |
> |
NavigableSet y = serialClone(x); |
| 533 |
> |
|
| 534 |
> |
assertNotSame(x, y); |
| 535 |
> |
assertEquals(x.size(), y.size()); |
| 536 |
> |
assertEquals(x, y); |
| 537 |
> |
assertEquals(y, x); |
| 538 |
> |
while (!x.isEmpty()) { |
| 539 |
> |
assertFalse(y.isEmpty()); |
| 540 |
> |
assertEquals(x.pollFirst(), y.pollFirst()); |
| 541 |
> |
} |
| 542 |
> |
assertTrue(y.isEmpty()); |
| 543 |
|
} |
| 544 |
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|
| 545 |
|
/** |
| 662 |
|
} |
| 663 |
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|
| 664 |
|
Random rnd = new Random(666); |
| 654 |
– |
BitSet bs; |
| 665 |
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|
| 666 |
|
/** |
| 667 |
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* Subsets of subsets subdivide correctly |
| 668 |
|
*/ |
| 669 |
|
public void testRecursiveSubSets() throws Exception { |
| 670 |
< |
int setSize = 1000; |
| 670 |
> |
int setSize = expensiveTests ? 1000 : 100; |
| 671 |
|
Class cl = ConcurrentSkipListSet.class; |
| 672 |
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|
| 673 |
|
NavigableSet<Integer> set = newSet(cl); |
| 674 |
< |
bs = new BitSet(setSize); |
| 674 |
> |
BitSet bs = new BitSet(setSize); |
| 675 |
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|
| 676 |
< |
populate(set, setSize); |
| 677 |
< |
check(set, 0, setSize - 1, true); |
| 678 |
< |
check(set.descendingSet(), 0, setSize - 1, false); |
| 679 |
< |
|
| 680 |
< |
mutateSet(set, 0, setSize - 1); |
| 681 |
< |
check(set, 0, setSize - 1, true); |
| 682 |
< |
check(set.descendingSet(), 0, setSize - 1, false); |
| 676 |
> |
populate(set, setSize, bs); |
| 677 |
> |
check(set, 0, setSize - 1, true, bs); |
| 678 |
> |
check(set.descendingSet(), 0, setSize - 1, false, bs); |
| 679 |
> |
|
| 680 |
> |
mutateSet(set, 0, setSize - 1, bs); |
| 681 |
> |
check(set, 0, setSize - 1, true, bs); |
| 682 |
> |
check(set.descendingSet(), 0, setSize - 1, false, bs); |
| 683 |
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|
| 684 |
|
bashSubSet(set.subSet(0, true, setSize, false), |
| 685 |
< |
0, setSize - 1, true); |
| 685 |
> |
0, setSize - 1, true, bs); |
| 686 |
> |
} |
| 687 |
> |
|
| 688 |
> |
/** |
| 689 |
> |
* addAll is idempotent |
| 690 |
> |
*/ |
| 691 |
> |
public void testAddAll_idempotent() throws Exception { |
| 692 |
> |
Set x = populatedSet(SIZE); |
| 693 |
> |
Set y = new ConcurrentSkipListSet(x); |
| 694 |
> |
y.addAll(x); |
| 695 |
> |
assertEquals(x, y); |
| 696 |
> |
assertEquals(y, x); |
| 697 |
|
} |
| 698 |
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|
| 699 |
|
static NavigableSet<Integer> newSet(Class cl) throws Exception { |
| 700 |
|
NavigableSet<Integer> result = (NavigableSet<Integer>) cl.newInstance(); |
| 701 |
< |
assertEquals(result.size(), 0); |
| 701 |
> |
assertEquals(0, result.size()); |
| 702 |
|
assertFalse(result.iterator().hasNext()); |
| 703 |
|
return result; |
| 704 |
|
} |
| 705 |
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|
| 706 |
< |
void populate(NavigableSet<Integer> set, int limit) { |
| 706 |
> |
void populate(NavigableSet<Integer> set, int limit, BitSet bs) { |
| 707 |
|
for (int i = 0, n = 2 * limit / 3; i < n; i++) { |
| 708 |
|
int element = rnd.nextInt(limit); |
| 709 |
< |
put(set, element); |
| 709 |
> |
put(set, element, bs); |
| 710 |
|
} |
| 711 |
|
} |
| 712 |
|
|
| 713 |
< |
void mutateSet(NavigableSet<Integer> set, int min, int max) { |
| 713 |
> |
void mutateSet(NavigableSet<Integer> set, int min, int max, BitSet bs) { |
| 714 |
|
int size = set.size(); |
| 715 |
|
int rangeSize = max - min + 1; |
| 716 |
|
|
| 717 |
|
// Remove a bunch of entries directly |
| 718 |
|
for (int i = 0, n = rangeSize / 2; i < n; i++) { |
| 719 |
< |
remove(set, min - 5 + rnd.nextInt(rangeSize + 10)); |
| 719 |
> |
remove(set, min - 5 + rnd.nextInt(rangeSize + 10), bs); |
| 720 |
|
} |
| 721 |
|
|
| 722 |
|
// Remove a bunch of entries with iterator |
| 731 |
|
while (set.size() < size) { |
| 732 |
|
int element = min + rnd.nextInt(rangeSize); |
| 733 |
|
assertTrue(element >= min && element<= max); |
| 734 |
< |
put(set, element); |
| 734 |
> |
put(set, element, bs); |
| 735 |
|
} |
| 736 |
|
} |
| 737 |
|
|
| 738 |
< |
void mutateSubSet(NavigableSet<Integer> set, int min, int max) { |
| 738 |
> |
void mutateSubSet(NavigableSet<Integer> set, int min, int max, |
| 739 |
> |
BitSet bs) { |
| 740 |
|
int size = set.size(); |
| 741 |
|
int rangeSize = max - min + 1; |
| 742 |
|
|
| 743 |
|
// Remove a bunch of entries directly |
| 744 |
|
for (int i = 0, n = rangeSize / 2; i < n; i++) { |
| 745 |
< |
remove(set, min - 5 + rnd.nextInt(rangeSize + 10)); |
| 745 |
> |
remove(set, min - 5 + rnd.nextInt(rangeSize + 10), bs); |
| 746 |
|
} |
| 747 |
|
|
| 748 |
|
// Remove a bunch of entries with iterator |
| 757 |
|
while (set.size() < size) { |
| 758 |
|
int element = min - 5 + rnd.nextInt(rangeSize + 10); |
| 759 |
|
if (element >= min && element<= max) { |
| 760 |
< |
put(set, element); |
| 760 |
> |
put(set, element, bs); |
| 761 |
|
} else { |
| 762 |
|
try { |
| 763 |
|
set.add(element); |
| 767 |
|
} |
| 768 |
|
} |
| 769 |
|
|
| 770 |
< |
void put(NavigableSet<Integer> set, int element) { |
| 770 |
> |
void put(NavigableSet<Integer> set, int element, BitSet bs) { |
| 771 |
|
if (set.add(element)) |
| 772 |
|
bs.set(element); |
| 773 |
|
} |
| 774 |
|
|
| 775 |
< |
void remove(NavigableSet<Integer> set, int element) { |
| 775 |
> |
void remove(NavigableSet<Integer> set, int element, BitSet bs) { |
| 776 |
|
if (set.remove(element)) |
| 777 |
|
bs.clear(element); |
| 778 |
|
} |
| 779 |
|
|
| 780 |
|
void bashSubSet(NavigableSet<Integer> set, |
| 781 |
< |
int min, int max, boolean ascending) { |
| 782 |
< |
check(set, min, max, ascending); |
| 783 |
< |
check(set.descendingSet(), min, max, !ascending); |
| 784 |
< |
|
| 785 |
< |
mutateSubSet(set, min, max); |
| 786 |
< |
check(set, min, max, ascending); |
| 787 |
< |
check(set.descendingSet(), min, max, !ascending); |
| 781 |
> |
int min, int max, boolean ascending, |
| 782 |
> |
BitSet bs) { |
| 783 |
> |
check(set, min, max, ascending, bs); |
| 784 |
> |
check(set.descendingSet(), min, max, !ascending, bs); |
| 785 |
> |
|
| 786 |
> |
mutateSubSet(set, min, max, bs); |
| 787 |
> |
check(set, min, max, ascending, bs); |
| 788 |
> |
check(set.descendingSet(), min, max, !ascending, bs); |
| 789 |
|
|
| 790 |
|
// Recurse |
| 791 |
|
if (max - min < 2) |
| 797 |
|
NavigableSet<Integer> hm = set.headSet(midPoint, incl); |
| 798 |
|
if (ascending) { |
| 799 |
|
if (rnd.nextBoolean()) |
| 800 |
< |
bashSubSet(hm, min, midPoint - (incl ? 0 : 1), true); |
| 800 |
> |
bashSubSet(hm, min, midPoint - (incl ? 0 : 1), true, bs); |
| 801 |
|
else |
| 802 |
|
bashSubSet(hm.descendingSet(), min, midPoint - (incl ? 0 : 1), |
| 803 |
< |
false); |
| 803 |
> |
false, bs); |
| 804 |
|
} else { |
| 805 |
|
if (rnd.nextBoolean()) |
| 806 |
< |
bashSubSet(hm, midPoint + (incl ? 0 : 1), max, false); |
| 806 |
> |
bashSubSet(hm, midPoint + (incl ? 0 : 1), max, false, bs); |
| 807 |
|
else |
| 808 |
|
bashSubSet(hm.descendingSet(), midPoint + (incl ? 0 : 1), max, |
| 809 |
< |
true); |
| 809 |
> |
true, bs); |
| 810 |
|
} |
| 811 |
|
|
| 812 |
|
// tailSet - pick direction and endpoint inclusion randomly |
| 814 |
|
NavigableSet<Integer> tm = set.tailSet(midPoint,incl); |
| 815 |
|
if (ascending) { |
| 816 |
|
if (rnd.nextBoolean()) |
| 817 |
< |
bashSubSet(tm, midPoint + (incl ? 0 : 1), max, true); |
| 817 |
> |
bashSubSet(tm, midPoint + (incl ? 0 : 1), max, true, bs); |
| 818 |
|
else |
| 819 |
|
bashSubSet(tm.descendingSet(), midPoint + (incl ? 0 : 1), max, |
| 820 |
< |
false); |
| 820 |
> |
false, bs); |
| 821 |
|
} else { |
| 822 |
|
if (rnd.nextBoolean()) { |
| 823 |
< |
bashSubSet(tm, min, midPoint - (incl ? 0 : 1), false); |
| 823 |
> |
bashSubSet(tm, min, midPoint - (incl ? 0 : 1), false, bs); |
| 824 |
|
} else { |
| 825 |
|
bashSubSet(tm.descendingSet(), min, midPoint - (incl ? 0 : 1), |
| 826 |
< |
true); |
| 826 |
> |
true, bs); |
| 827 |
|
} |
| 828 |
|
} |
| 829 |
|
|
| 840 |
|
endpoints[0], lowIncl, endpoints[1], highIncl); |
| 841 |
|
if (rnd.nextBoolean()) |
| 842 |
|
bashSubSet(sm, endpoints[0] + (lowIncl ? 0 : 1), |
| 843 |
< |
endpoints[1] - (highIncl ? 0 : 1), true); |
| 843 |
> |
endpoints[1] - (highIncl ? 0 : 1), true, bs); |
| 844 |
|
else |
| 845 |
|
bashSubSet(sm.descendingSet(), endpoints[0] + (lowIncl ? 0 : 1), |
| 846 |
< |
endpoints[1] - (highIncl ? 0 : 1), false); |
| 846 |
> |
endpoints[1] - (highIncl ? 0 : 1), false, bs); |
| 847 |
|
} else { |
| 848 |
|
NavigableSet<Integer> sm = set.subSet( |
| 849 |
|
endpoints[1], highIncl, endpoints[0], lowIncl); |
| 850 |
|
if (rnd.nextBoolean()) |
| 851 |
|
bashSubSet(sm, endpoints[0] + (lowIncl ? 0 : 1), |
| 852 |
< |
endpoints[1] - (highIncl ? 0 : 1), false); |
| 852 |
> |
endpoints[1] - (highIncl ? 0 : 1), false, bs); |
| 853 |
|
else |
| 854 |
|
bashSubSet(sm.descendingSet(), endpoints[0] + (lowIncl ? 0 : 1), |
| 855 |
< |
endpoints[1] - (highIncl ? 0 : 1), true); |
| 855 |
> |
endpoints[1] - (highIncl ? 0 : 1), true, bs); |
| 856 |
|
} |
| 857 |
|
} |
| 858 |
|
|
| 860 |
|
* min and max are both inclusive. If max < min, interval is empty. |
| 861 |
|
*/ |
| 862 |
|
void check(NavigableSet<Integer> set, |
| 863 |
< |
final int min, final int max, final boolean ascending) { |
| 864 |
< |
class ReferenceSet { |
| 863 |
> |
final int min, final int max, final boolean ascending, |
| 864 |
> |
final BitSet bs) { |
| 865 |
> |
class ReferenceSet { |
| 866 |
|
int lower(int element) { |
| 867 |
|
return ascending ? |
| 868 |
|
lowerAscending(element) : higherAscending(element); |
| 897 |
|
// BitSet should support this! Test would run much faster |
| 898 |
|
while (element >= min) { |
| 899 |
|
if (bs.get(element)) |
| 900 |
< |
return(element); |
| 900 |
> |
return element; |
| 901 |
|
element--; |
| 902 |
|
} |
| 903 |
|
return -1; |
| 932 |
|
if (bsContainsI) |
| 933 |
|
size++; |
| 934 |
|
} |
| 935 |
< |
assertEquals(set.size(), size); |
| 935 |
> |
assertEquals(size, set.size()); |
| 936 |
|
|
| 937 |
|
// Test contents using contains elementSet iterator |
| 938 |
|
int size2 = 0; |
