21 |
|
/** |
22 |
|
* Returns a new map from Integers 1-5 to Strings "A"-"E". |
23 |
|
*/ |
24 |
< |
private static ConcurrentHashMap map5() { |
25 |
< |
ConcurrentHashMap map = new ConcurrentHashMap(5); |
24 |
> |
private static ConcurrentHashMap<Integer, String> map5() { |
25 |
> |
ConcurrentHashMap map = new ConcurrentHashMap<Integer, String>(5); |
26 |
|
assertTrue(map.isEmpty()); |
27 |
|
map.put(one, "A"); |
28 |
|
map.put(two, "B"); |
160 |
|
* can be inserted and found. |
161 |
|
*/ |
162 |
|
public void testMixedComparable() { |
163 |
< |
int size = 10000; |
164 |
< |
ConcurrentHashMap<Object, Object> map = |
163 |
> |
int size = 1200; // makes measured test run time -> 35ms |
164 |
> |
ConcurrentHashMap<Object, Object> map = |
165 |
|
new ConcurrentHashMap<Object, Object>(); |
166 |
< |
Random rng = new Random(1370014958369218000L); |
167 |
< |
for(int i = 0; i < size; i++) { |
166 |
> |
Random rng = new Random(); |
167 |
> |
for (int i = 0; i < size; i++) { |
168 |
|
Object x; |
169 |
< |
switch(rng.nextInt(4)) { |
169 |
> |
switch (rng.nextInt(4)) { |
170 |
|
case 0: |
171 |
|
x = new Object(); |
172 |
|
break; |
213 |
|
} |
214 |
|
|
215 |
|
/** |
216 |
+ |
* hashCode() equals sum of each key.hashCode ^ value.hashCode |
217 |
+ |
*/ |
218 |
+ |
public void testHashCode() { |
219 |
+ |
ConcurrentHashMap<Integer,String> map = map5(); |
220 |
+ |
int sum = 0; |
221 |
+ |
for (Map.Entry<Integer,String> e : map.entrySet()) |
222 |
+ |
sum += e.getKey().hashCode() ^ e.getValue().hashCode(); |
223 |
+ |
assertEquals(sum, map.hashCode()); |
224 |
+ |
} |
225 |
+ |
|
226 |
+ |
/** |
227 |
|
* contains returns true for contained value |
228 |
|
*/ |
229 |
|
public void testContains() { |
507 |
|
// Exception tests |
508 |
|
|
509 |
|
/** |
510 |
< |
* Cannot create with negative capacity |
510 |
> |
* Cannot create with only negative capacity |
511 |
|
*/ |
512 |
|
public void testConstructor1() { |
513 |
|
try { |
514 |
< |
new ConcurrentHashMap(-1,0,1); |
514 |
> |
new ConcurrentHashMap(-1); |
515 |
|
shouldThrow(); |
516 |
|
} catch (IllegalArgumentException success) {} |
517 |
|
} |
518 |
|
|
519 |
|
/** |
520 |
< |
* Cannot create with negative concurrency level |
521 |
< |
*/ |
520 |
> |
* Constructor (initialCapacity, loadFactor) throws |
521 |
> |
* IllegalArgumentException if either argument is negative |
522 |
> |
*/ |
523 |
|
public void testConstructor2() { |
524 |
|
try { |
525 |
< |
new ConcurrentHashMap(1,0,-1); |
525 |
> |
new ConcurrentHashMap(-1, .75f); |
526 |
|
shouldThrow(); |
527 |
< |
} catch (IllegalArgumentException success) {} |
527 |
> |
} catch (IllegalArgumentException e) {} |
528 |
> |
|
529 |
> |
try { |
530 |
> |
new ConcurrentHashMap(16, -1); |
531 |
> |
shouldThrow(); |
532 |
> |
} catch (IllegalArgumentException e) {} |
533 |
|
} |
534 |
|
|
535 |
|
/** |
536 |
< |
* Cannot create with only negative capacity |
536 |
> |
* Constructor (initialCapacity, loadFactor, concurrencyLevel) |
537 |
> |
* throws IllegalArgumentException if any argument is negative |
538 |
|
*/ |
539 |
|
public void testConstructor3() { |
540 |
|
try { |
541 |
< |
new ConcurrentHashMap(-1); |
541 |
> |
new ConcurrentHashMap(-1, .75f, 1); |
542 |
|
shouldThrow(); |
543 |
< |
} catch (IllegalArgumentException success) {} |
543 |
> |
} catch (IllegalArgumentException e) {} |
544 |
> |
|
545 |
> |
try { |
546 |
> |
new ConcurrentHashMap(16, -1, 1); |
547 |
> |
shouldThrow(); |
548 |
> |
} catch (IllegalArgumentException e) {} |
549 |
> |
|
550 |
> |
try { |
551 |
> |
new ConcurrentHashMap(16, .75f, -1); |
552 |
> |
shouldThrow(); |
553 |
> |
} catch (IllegalArgumentException e) {} |
554 |
> |
} |
555 |
> |
|
556 |
> |
/** |
557 |
> |
* ConcurrentHashMap(map) throws NullPointerException if the given |
558 |
> |
* map is null |
559 |
> |
*/ |
560 |
> |
public void testConstructor4() { |
561 |
> |
try { |
562 |
> |
new ConcurrentHashMap(null); |
563 |
> |
shouldThrow(); |
564 |
> |
} catch (NullPointerException e) {} |
565 |
> |
} |
566 |
> |
|
567 |
> |
/** |
568 |
> |
* ConcurrentHashMap(map) creates a new map with the same mappings |
569 |
> |
* as the given map |
570 |
> |
*/ |
571 |
> |
public void testConstructor5() { |
572 |
> |
ConcurrentHashMap map1 = map5(); |
573 |
> |
ConcurrentHashMap map2 = new ConcurrentHashMap(map5()); |
574 |
> |
assertTrue(map2.equals(map1)); |
575 |
> |
map2.put(one, "F"); |
576 |
> |
assertFalse(map2.equals(map1)); |
577 |
|
} |
578 |
|
|
579 |
+ |
|
580 |
|
/** |
581 |
|
* get(null) throws NPE |
582 |
|
*/ |