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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.function.*; |
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import java.util.concurrent.atomic.LongAdder; |
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import static java.util.Spliterator.CONCURRENT; |
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import static java.util.Spliterator.DISTINCT; |
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import static java.util.Spliterator.NONNULL; |
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|
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import java.util.AbstractMap; |
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import java.util.Arrays; |
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import java.util.Collection; |
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import java.util.Collections; |
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import java.util.Iterator; |
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import java.util.Map; |
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import java.util.NoSuchElementException; |
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import java.util.Set; |
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import java.util.Spliterator; |
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import java.util.concurrent.ConcurrentHashMap; |
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import java.util.concurrent.atomic.LongAdder; |
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import java.util.function.BiFunction; |
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|
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import junit.framework.Test; |
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import junit.framework.TestSuite; |
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public class ConcurrentHashMap8Test extends JSR166TestCase { |
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public static void main(String[] args) { |
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junit.textui.TestRunner.run(suite()); |
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main(suite(), args); |
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} |
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public static Test suite() { |
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return new TestSuite(ConcurrentHashMap8Test.class); |
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} |
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/** |
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* computeIfAbsent does not replace if the key is already present |
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* computeIfAbsent does not replace if the key is already present |
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*/ |
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public void testComputeIfAbsent2() { |
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ConcurrentHashMap map = map5(); |
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} |
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|
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/** |
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* computeIfPresent does not replace if the key is already present |
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* computeIfPresent does not replace if the key is already present |
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*/ |
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public void testComputeIfPresent() { |
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ConcurrentHashMap map = map5(); |
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} |
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|
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/** |
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* compute does not replace if the function returns null |
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* compute does not replace if the function returns null |
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*/ |
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public void testCompute() { |
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ConcurrentHashMap map = map5(); |
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Set<Integer> a = ConcurrentHashMap.<Integer>newKeySet(); |
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assertTrue(a.isEmpty()); |
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for (int i = 0; i < n; i++) |
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a.add(i); |
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assertFalse(a.isEmpty()); |
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assertTrue(a.add(i)); |
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assertEquals(n == 0, a.isEmpty()); |
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assertEquals(n, a.size()); |
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return a; |
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} |
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Set<Integer> a = ConcurrentHashMap.<Integer>newKeySet(); |
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assertTrue(a.isEmpty()); |
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for (int i = 0; i < elements.length; i++) |
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a.add(elements[i]); |
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assertTrue(a.add(elements[i])); |
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assertFalse(a.isEmpty()); |
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assertEquals(elements.length, a.size()); |
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return a; |
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} |
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|
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/** |
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* replaceAll replaces all matching values. |
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*/ |
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public void testReplaceAll() { |
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ConcurrentHashMap<Integer, String> map = map5(); |
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map.replaceAll((x, y) -> { return x > 3 ? "Z" : y; }); |
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assertEquals("A", map.get(one)); |
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assertEquals("B", map.get(two)); |
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assertEquals("C", map.get(three)); |
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assertEquals("Z", map.get(four)); |
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assertEquals("Z", map.get(five)); |
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} |
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|
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/** |
196 |
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* Default-constructed set is empty |
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*/ |
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public void testNewKeySet() { |
201 |
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} |
202 |
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|
203 |
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/** |
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* keySet.add adds the key with the established value to the map; |
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* remove removes it. |
206 |
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*/ |
207 |
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public void testKeySetAddRemove() { |
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ConcurrentHashMap map = map5(); |
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Set set1 = map.keySet(); |
210 |
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Set set2 = map.keySet(true); |
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set2.add(six); |
212 |
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assertTrue(((ConcurrentHashMap.KeySetView)set2).getMap() == map); |
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assertTrue(((ConcurrentHashMap.KeySetView)set1).getMap() == map); |
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assertEquals(set2.size(), map.size()); |
215 |
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assertEquals(set1.size(), map.size()); |
216 |
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assertTrue((Boolean)map.get(six)); |
217 |
+ |
assertTrue(set1.contains(six)); |
218 |
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assertTrue(set2.contains(six)); |
219 |
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set2.remove(six); |
220 |
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assertNull(map.get(six)); |
221 |
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assertFalse(set1.contains(six)); |
222 |
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assertFalse(set2.contains(six)); |
223 |
+ |
} |
224 |
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|
225 |
+ |
/** |
226 |
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* keySet.addAll adds each element from the given collection |
227 |
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*/ |
228 |
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public void testAddAll() { |
229 |
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Set full = populatedSet(3); |
230 |
< |
Vector v = new Vector(); |
231 |
< |
v.add(three); |
232 |
< |
v.add(four); |
184 |
< |
v.add(five); |
185 |
< |
full.addAll(v); |
230 |
> |
assertTrue(full.addAll(Arrays.asList(three, four, five))); |
231 |
> |
assertEquals(6, full.size()); |
232 |
> |
assertFalse(full.addAll(Arrays.asList(three, four, five))); |
233 |
|
assertEquals(6, full.size()); |
234 |
|
} |
235 |
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|
239 |
|
*/ |
240 |
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public void testAddAll2() { |
241 |
|
Set full = populatedSet(3); |
242 |
< |
Vector v = new Vector(); |
243 |
< |
v.add(three); |
244 |
< |
v.add(four); |
245 |
< |
v.add(one); // will not add this element |
199 |
< |
full.addAll(v); |
242 |
> |
// "one" is duplicate and will not be added |
243 |
> |
assertTrue(full.addAll(Arrays.asList(three, four, one))); |
244 |
> |
assertEquals(5, full.size()); |
245 |
> |
assertFalse(full.addAll(Arrays.asList(three, four, one))); |
246 |
|
assertEquals(5, full.size()); |
247 |
|
} |
248 |
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|
251 |
|
*/ |
252 |
|
public void testAdd2() { |
253 |
|
Set full = populatedSet(3); |
254 |
< |
full.add(one); |
254 |
> |
assertFalse(full.add(one)); |
255 |
|
assertEquals(3, full.size()); |
256 |
|
} |
257 |
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|
260 |
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*/ |
261 |
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public void testAdd3() { |
262 |
|
Set full = populatedSet(3); |
263 |
< |
full.add(three); |
263 |
> |
assertTrue(full.add(three)); |
264 |
> |
assertTrue(full.contains(three)); |
265 |
> |
assertFalse(full.add(three)); |
266 |
|
assertTrue(full.contains(three)); |
267 |
|
} |
268 |
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|
269 |
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/** |
270 |
+ |
* keySet.add throws UnsupportedOperationException if no default |
271 |
+ |
* mapped value |
272 |
+ |
*/ |
273 |
+ |
public void testAdd4() { |
274 |
+ |
Set full = map5().keySet(); |
275 |
+ |
try { |
276 |
+ |
full.add(three); |
277 |
+ |
shouldThrow(); |
278 |
+ |
} catch (UnsupportedOperationException success) {} |
279 |
+ |
} |
280 |
+ |
|
281 |
+ |
/** |
282 |
+ |
* keySet.add throws NullPointerException if the specified key is |
283 |
+ |
* null |
284 |
+ |
*/ |
285 |
+ |
public void testAdd5() { |
286 |
+ |
Set full = populatedSet(3); |
287 |
+ |
try { |
288 |
+ |
full.add(null); |
289 |
+ |
shouldThrow(); |
290 |
+ |
} catch (NullPointerException success) {} |
291 |
+ |
} |
292 |
+ |
|
293 |
+ |
/** |
294 |
+ |
* KeySetView.getMappedValue returns the map's mapped value |
295 |
+ |
*/ |
296 |
+ |
public void testGetMappedValue() { |
297 |
+ |
ConcurrentHashMap map = map5(); |
298 |
+ |
assertNull(map.keySet().getMappedValue()); |
299 |
+ |
try { |
300 |
+ |
map.keySet(null); |
301 |
+ |
shouldThrow(); |
302 |
+ |
} catch (NullPointerException success) {} |
303 |
+ |
ConcurrentHashMap.KeySetView set = map.keySet(one); |
304 |
+ |
assertFalse(set.add(one)); |
305 |
+ |
assertTrue(set.add(six)); |
306 |
+ |
assertTrue(set.add(seven)); |
307 |
+ |
assertTrue(set.getMappedValue() == one); |
308 |
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assertTrue(map.get(one) != one); |
309 |
+ |
assertTrue(map.get(six) == one); |
310 |
+ |
assertTrue(map.get(seven) == one); |
311 |
+ |
} |
312 |
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|
313 |
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void checkSpliteratorCharacteristics(Spliterator<?> sp, |
314 |
+ |
int requiredCharacteristics) { |
315 |
+ |
assertEquals(requiredCharacteristics, |
316 |
+ |
requiredCharacteristics & sp.characteristics()); |
317 |
+ |
} |
318 |
+ |
|
319 |
+ |
/** |
320 |
+ |
* KeySetView.spliterator returns spliterator over the elements in this set |
321 |
+ |
*/ |
322 |
+ |
public void testKeySetSpliterator() { |
323 |
+ |
LongAdder adder = new LongAdder(); |
324 |
+ |
ConcurrentHashMap map = map5(); |
325 |
+ |
Set set = map.keySet(); |
326 |
+ |
Spliterator<Integer> sp = set.spliterator(); |
327 |
+ |
checkSpliteratorCharacteristics(sp, CONCURRENT | DISTINCT | NONNULL); |
328 |
+ |
assertEquals(sp.estimateSize(), map.size()); |
329 |
+ |
Spliterator<Integer> sp2 = sp.trySplit(); |
330 |
+ |
sp.forEachRemaining((Integer x) -> adder.add(x.longValue())); |
331 |
+ |
long v = adder.sumThenReset(); |
332 |
+ |
sp2.forEachRemaining((Integer x) -> adder.add(x.longValue())); |
333 |
+ |
long v2 = adder.sum(); |
334 |
+ |
assertEquals(v + v2, 15); |
335 |
+ |
} |
336 |
+ |
|
337 |
+ |
/** |
338 |
|
* keyset.clear removes all elements from the set |
339 |
|
*/ |
340 |
|
public void testClear() { |
374 |
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* KeySet.containsAll returns true for collections with subset of elements |
375 |
|
*/ |
376 |
|
public void testContainsAll() { |
377 |
< |
Set full = populatedSet(3); |
378 |
< |
Vector v = new Vector(); |
379 |
< |
v.add(one); |
380 |
< |
v.add(two); |
381 |
< |
assertTrue(full.containsAll(v)); |
382 |
< |
v.add(six); |
267 |
< |
assertFalse(full.containsAll(v)); |
377 |
> |
Collection full = populatedSet(3); |
378 |
> |
assertTrue(full.containsAll(Arrays.asList())); |
379 |
> |
assertTrue(full.containsAll(Arrays.asList(one))); |
380 |
> |
assertTrue(full.containsAll(Arrays.asList(one, two))); |
381 |
> |
assertFalse(full.containsAll(Arrays.asList(one, two, six))); |
382 |
> |
assertFalse(full.containsAll(Arrays.asList(six))); |
383 |
|
} |
384 |
|
|
385 |
|
/** |
386 |
|
* KeySet.isEmpty is true when empty, else false |
387 |
|
*/ |
388 |
|
public void testIsEmpty() { |
389 |
< |
Set empty = ConcurrentHashMap.newKeySet(); |
390 |
< |
Set full = populatedSet(3); |
276 |
< |
assertTrue(empty.isEmpty()); |
277 |
< |
assertFalse(full.isEmpty()); |
389 |
> |
assertTrue(populatedSet(0).isEmpty()); |
390 |
> |
assertFalse(populatedSet(3).isEmpty()); |
391 |
|
} |
392 |
|
|
393 |
|
/** |
414 |
|
assertTrue(it.hasNext()); |
415 |
|
it.next(); |
416 |
|
} |
417 |
< |
assertFalse(it.hasNext()); |
418 |
< |
try { |
419 |
< |
it.next(); |
420 |
< |
shouldThrow(); |
421 |
< |
} catch (NoSuchElementException success) {} |
417 |
> |
assertIteratorExhausted(it); |
418 |
> |
} |
419 |
> |
|
420 |
> |
/** |
421 |
> |
* iterator of empty collections has no elements |
422 |
> |
*/ |
423 |
> |
public void testEmptyIterator() { |
424 |
> |
assertIteratorExhausted(ConcurrentHashMap.newKeySet().iterator()); |
425 |
> |
assertIteratorExhausted(new ConcurrentHashMap().entrySet().iterator()); |
426 |
> |
assertIteratorExhausted(new ConcurrentHashMap().values().iterator()); |
427 |
> |
assertIteratorExhausted(new ConcurrentHashMap().keySet().iterator()); |
428 |
|
} |
429 |
|
|
430 |
|
/** |
458 |
|
*/ |
459 |
|
public void testRemoveAll() { |
460 |
|
Set full = populatedSet(3); |
461 |
< |
Vector v = new Vector(); |
462 |
< |
v.add(one); |
463 |
< |
v.add(two); |
345 |
< |
full.removeAll(v); |
461 |
> |
assertTrue(full.removeAll(Arrays.asList(one, two))); |
462 |
> |
assertEquals(1, full.size()); |
463 |
> |
assertFalse(full.removeAll(Arrays.asList(one, two))); |
464 |
|
assertEquals(1, full.size()); |
465 |
|
} |
466 |
|
|
516 |
|
a = new Integer[0]; |
517 |
|
assertSame(a, empty.toArray(a)); |
518 |
|
|
519 |
< |
a = new Integer[size/2]; |
519 |
> |
a = new Integer[size / 2]; |
520 |
|
Arrays.fill(a, 42); |
521 |
|
assertSame(a, empty.toArray(a)); |
522 |
|
assertNull(a[0]); |
551 |
|
|
552 |
|
assertNotSame(x, y); |
553 |
|
assertEquals(x.size(), y.size()); |
436 |
– |
assertEquals(x.toString(), y.toString()); |
437 |
– |
assertTrue(Arrays.equals(x.toArray(), y.toArray())); |
554 |
|
assertEquals(x, y); |
555 |
|
assertEquals(y, x); |
556 |
|
} |
557 |
|
|
442 |
– |
|
558 |
|
static final int SIZE = 10000; |
559 |
|
static ConcurrentHashMap<Long, Long> longMap; |
560 |
|
|
752 |
|
assertEquals(adder.sum(), 3 * SIZE * (SIZE - 1) / 2); |
753 |
|
} |
754 |
|
|
640 |
– |
|
755 |
|
/** |
756 |
|
* reduceKeysSequentially accumulates across all keys, |
757 |
|
*/ |
772 |
|
assertEquals((long)r, (long)SIZE * (SIZE - 1) / 2); |
773 |
|
} |
774 |
|
|
661 |
– |
|
775 |
|
/** |
776 |
|
* reduceEntriesSequentially accumulates across all entries |
777 |
|
*/ |
874 |
|
assertEquals((long)r, (long)3 * SIZE * (SIZE - 1) / 2); |
875 |
|
} |
876 |
|
|
764 |
– |
|
877 |
|
/** |
878 |
|
* reduceKeysToLongSequentially accumulates mapped keys |
879 |
|
*/ |
1002 |
|
public void testSearchValuesSequentially() { |
1003 |
|
ConcurrentHashMap<Long, Long> m = longMap(); |
1004 |
|
Long r; |
1005 |
< |
r = m.searchValues(Long.MAX_VALUE, (Long x) -> x.longValue() == (long)(SIZE/2)? x : null); |
1005 |
> |
r = m.searchValues(Long.MAX_VALUE, |
1006 |
> |
(Long x) -> (x.longValue() == (long)(SIZE/2)) ? x : null); |
1007 |
|
assertEquals((long)r, (long)(SIZE/2)); |
1008 |
< |
r = m.searchValues(Long.MAX_VALUE, (Long x) -> x.longValue() < 0L ? x : null); |
1008 |
> |
r = m.searchValues(Long.MAX_VALUE, |
1009 |
> |
(Long x) -> (x.longValue() < 0L) ? x : null); |
1010 |
|
assertNull(r); |
1011 |
|
} |
1012 |
|
|