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Comparing jsr166/src/test/tck/ConcurrentHashMap8Test.java (file contents):
Revision 1.1 by dl, Thu Mar 21 19:06:54 2013 UTC vs.
Revision 1.22 by jsr166, Sat Jan 17 22:55:06 2015 UTC

# Line 2 | Line 2
2   * Written by Doug Lea with assistance from members of JCP JSR-166
3   * Expert Group and released to the public domain, as explained at
4   * http://creativecommons.org/publicdomain/zero/1.0/
5 * Other contributors include Andrew Wright, Jeffrey Hayes,
6 * Pat Fisher, Mike Judd.
5   */
6  
7 < import junit.framework.*;
8 < import java.util.*;
7 > import static java.util.Spliterator.CONCURRENT;
8 > import static java.util.Spliterator.DISTINCT;
9 > import static java.util.Spliterator.NONNULL;
10 >
11 > import java.util.AbstractMap;
12 > import java.util.Arrays;
13 > import java.util.Collection;
14 > import java.util.Collections;
15 > import java.util.Iterator;
16 > import java.util.Map;
17 > import java.util.NoSuchElementException;
18 > import java.util.Set;
19 > import java.util.Spliterator;
20 > import java.util.Vector;
21   import java.util.concurrent.ConcurrentHashMap;
22 + import java.util.concurrent.atomic.LongAdder;
23 + import java.util.function.BiFunction;
24 +
25 + import junit.framework.Test;
26 + import junit.framework.TestSuite;
27  
28   public class ConcurrentHashMap8Test extends JSR166TestCase {
29      public static void main(String[] args) {
# Line 35 | Line 50 | public class ConcurrentHashMap8Test exte
50      }
51  
52      /**
53 +     * getOrDefault returns value if present, else default
54 +     */
55 +    public void testGetOrDefault() {
56 +        ConcurrentHashMap map = map5();
57 +        assertEquals(map.getOrDefault(one, "Z"), "A");
58 +        assertEquals(map.getOrDefault(six, "Z"), "Z");
59 +    }
60 +
61 +    /**
62       * computeIfAbsent adds when the given key is not present
63       */
64      public void testComputeIfAbsent() {
# Line 44 | Line 68 | public class ConcurrentHashMap8Test exte
68      }
69  
70      /**
71 <     * computeIfAbsent does not replace  if the key is already present
71 >     * computeIfAbsent does not replace if the key is already present
72       */
73      public void testComputeIfAbsent2() {
74          ConcurrentHashMap map = map5();
# Line 59 | Line 83 | public class ConcurrentHashMap8Test exte
83          map.computeIfAbsent(six, (x) -> null);
84          assertFalse(map.containsKey(six));
85      }
86 <    
86 >
87      /**
88 <     * computeIfPresent does not replace  if the key is already present
88 >     * computeIfPresent does not replace if the key is already present
89       */
90      public void testComputeIfPresent() {
91          ConcurrentHashMap map = map5();
# Line 78 | Line 102 | public class ConcurrentHashMap8Test exte
102      }
103  
104      /**
105 <     * compute does not replace  if the function returns null
105 >     * compute does not replace if the function returns null
106       */
107      public void testCompute() {
108          ConcurrentHashMap map = map5();
# Line 136 | Line 160 | public class ConcurrentHashMap8Test exte
160          assertFalse(map.containsKey(one));
161      }
162  
163 +    static Set<Integer> populatedSet(int n) {
164 +        Set<Integer> a = ConcurrentHashMap.<Integer>newKeySet();
165 +        assertTrue(a.isEmpty());
166 +        for (int i = 0; i < n; i++)
167 +            a.add(i);
168 +        assertFalse(a.isEmpty());
169 +        assertEquals(n, a.size());
170 +        return a;
171 +    }
172 +
173 +    static Set populatedSet(Integer[] elements) {
174 +        Set<Integer> a = ConcurrentHashMap.<Integer>newKeySet();
175 +        assertTrue(a.isEmpty());
176 +        for (int i = 0; i < elements.length; i++)
177 +            a.add(elements[i]);
178 +        assertFalse(a.isEmpty());
179 +        assertEquals(elements.length, a.size());
180 +        return a;
181 +    }
182 +
183 +    /**
184 +     * replaceAll replaces all matching values.
185 +     */
186 +    public void testReplaceAll() {
187 +        ConcurrentHashMap<Integer, String> map = map5();
188 +        map.replaceAll((x, y) -> { return x > 3 ? "Z" : y; });
189 +        assertEquals("A", map.get(one));
190 +        assertEquals("B", map.get(two));
191 +        assertEquals("C", map.get(three));
192 +        assertEquals("Z", map.get(four));
193 +        assertEquals("Z", map.get(five));
194 +    }
195 +
196 +    /**
197 +     * Default-constructed set is empty
198 +     */
199 +    public void testNewKeySet() {
200 +        Set a = ConcurrentHashMap.newKeySet();
201 +        assertTrue(a.isEmpty());
202 +    }
203 +
204 +    /**
205 +     * keySet.add adds the key with the established value to the map;
206 +     * remove removes it.
207 +     */
208 +    public void testKeySetAddRemove() {
209 +        ConcurrentHashMap map = map5();
210 +        Set set1 = map.keySet();
211 +        Set set2 = map.keySet(true);
212 +        set2.add(six);
213 +        assertTrue(((ConcurrentHashMap.KeySetView)set2).getMap() == map);
214 +        assertTrue(((ConcurrentHashMap.KeySetView)set1).getMap() == map);
215 +        assertEquals(set2.size(), map.size());
216 +        assertEquals(set1.size(), map.size());
217 +        assertTrue((Boolean)map.get(six));
218 +        assertTrue(set1.contains(six));
219 +        assertTrue(set2.contains(six));
220 +        set2.remove(six);
221 +        assertNull(map.get(six));
222 +        assertFalse(set1.contains(six));
223 +        assertFalse(set2.contains(six));
224 +    }
225 +
226 +    /**
227 +     * keySet.addAll adds each element from the given collection
228 +     */
229 +    public void testAddAll() {
230 +        Set full = populatedSet(3);
231 +        Vector v = new Vector();
232 +        v.add(three);
233 +        v.add(four);
234 +        v.add(five);
235 +        full.addAll(v);
236 +        assertEquals(6, full.size());
237 +    }
238 +
239 +    /**
240 +     * keySet.addAll adds each element from the given collection that did not
241 +     * already exist in the set
242 +     */
243 +    public void testAddAll2() {
244 +        Set full = populatedSet(3);
245 +        Vector v = new Vector();
246 +        v.add(three);
247 +        v.add(four);
248 +        v.add(one); // will not add this element
249 +        full.addAll(v);
250 +        assertEquals(5, full.size());
251 +    }
252 +
253 +    /**
254 +     * keySet.add will not add the element if it already exists in the set
255 +     */
256 +    public void testAdd2() {
257 +        Set full = populatedSet(3);
258 +        full.add(one);
259 +        assertEquals(3, full.size());
260 +    }
261 +
262 +    /**
263 +     * keySet.add adds the element when it does not exist in the set
264 +     */
265 +    public void testAdd3() {
266 +        Set full = populatedSet(3);
267 +        full.add(three);
268 +        assertTrue(full.contains(three));
269 +    }
270 +
271 +    /**
272 +     * keySet.add throws UnsupportedOperationException if no default
273 +     * mapped value
274 +     */
275 +    public void testAdd4() {
276 +        Set full = map5().keySet();
277 +        try {
278 +            full.add(three);
279 +            shouldThrow();
280 +        } catch (UnsupportedOperationException e){}
281 +    }
282 +
283 +    /**
284 +     * keySet.add throws NullPointerException if the specified key is
285 +     * null
286 +     */
287 +    public void testAdd5() {
288 +        Set full = populatedSet(3);
289 +        try {
290 +            full.add(null);
291 +            shouldThrow();
292 +        } catch (NullPointerException e){}
293 +    }
294 +
295 +    /**
296 +     * KeySetView.getMappedValue returns the map's mapped value
297 +     */
298 +    public void testGetMappedValue() {
299 +        ConcurrentHashMap map = map5();
300 +        assertNull(map.keySet().getMappedValue());
301 +        try {
302 +            map.keySet(null);
303 +            shouldThrow();
304 +        } catch (NullPointerException e) {}
305 +        ConcurrentHashMap.KeySetView set = map.keySet(one);
306 +        set.add(one);
307 +        set.add(six);
308 +        set.add(seven);
309 +        assertTrue(set.getMappedValue() == one);
310 +        assertTrue(map.get(one) != one);
311 +        assertTrue(map.get(six) == one);
312 +        assertTrue(map.get(seven) == one);
313 +    }
314 +
315 +    void checkSpliteratorCharacteristics(Spliterator<?> sp,
316 +                                         int requiredCharacteristics) {
317 +        assertEquals(requiredCharacteristics,
318 +                     requiredCharacteristics & sp.characteristics());
319 +    }
320 +
321 +    /**
322 +     * KeySetView.spliterator returns spliterator over the elements in this set
323 +     */
324 +    public void testKeySetSpliterator() {
325 +        LongAdder adder = new LongAdder();
326 +        ConcurrentHashMap map = map5();
327 +        Set set = map.keySet();
328 +        Spliterator<Integer> sp = set.spliterator();
329 +        checkSpliteratorCharacteristics(sp, CONCURRENT | DISTINCT | NONNULL);
330 +        assertEquals(sp.estimateSize(), map.size());
331 +        Spliterator<Integer> sp2 = sp.trySplit();
332 +        sp.forEachRemaining((Integer x) -> adder.add(x.longValue()));
333 +        long v = adder.sumThenReset();
334 +        sp2.forEachRemaining((Integer x) -> adder.add(x.longValue()));
335 +        long v2 = adder.sum();
336 +        assertEquals(v + v2, 15);
337 +    }
338 +
339 +    /**
340 +     * keyset.clear removes all elements from the set
341 +     */
342 +    public void testClear() {
343 +        Set full = populatedSet(3);
344 +        full.clear();
345 +        assertEquals(0, full.size());
346 +    }
347 +
348 +    /**
349 +     * keyset.contains returns true for added elements
350 +     */
351 +    public void testContains() {
352 +        Set full = populatedSet(3);
353 +        assertTrue(full.contains(one));
354 +        assertFalse(full.contains(five));
355 +    }
356 +
357 +    /**
358 +     * KeySets with equal elements are equal
359 +     */
360 +    public void testEquals() {
361 +        Set a = populatedSet(3);
362 +        Set b = populatedSet(3);
363 +        assertTrue(a.equals(b));
364 +        assertTrue(b.equals(a));
365 +        assertEquals(a.hashCode(), b.hashCode());
366 +        a.add(m1);
367 +        assertFalse(a.equals(b));
368 +        assertFalse(b.equals(a));
369 +        b.add(m1);
370 +        assertTrue(a.equals(b));
371 +        assertTrue(b.equals(a));
372 +        assertEquals(a.hashCode(), b.hashCode());
373 +    }
374 +
375 +    /**
376 +     * KeySet.containsAll returns true for collections with subset of elements
377 +     */
378 +    public void testContainsAll() {
379 +        Set full = populatedSet(3);
380 +        Vector v = new Vector();
381 +        v.add(one);
382 +        v.add(two);
383 +        assertTrue(full.containsAll(v));
384 +        v.add(six);
385 +        assertFalse(full.containsAll(v));
386 +    }
387 +
388 +    /**
389 +     * KeySet.isEmpty is true when empty, else false
390 +     */
391 +    public void testIsEmpty() {
392 +        Set empty = ConcurrentHashMap.newKeySet();
393 +        Set full = populatedSet(3);
394 +        assertTrue(empty.isEmpty());
395 +        assertFalse(full.isEmpty());
396 +    }
397 +
398 +    /**
399 +     * KeySet.iterator() returns an iterator containing the elements of the
400 +     * set
401 +     */
402 +    public void testIterator() {
403 +        Collection empty = ConcurrentHashMap.newKeySet();
404 +        int size = 20;
405 +        assertFalse(empty.iterator().hasNext());
406 +        try {
407 +            empty.iterator().next();
408 +            shouldThrow();
409 +        } catch (NoSuchElementException success) {}
410 +
411 +        Integer[] elements = new Integer[size];
412 +        for (int i = 0; i < size; i++)
413 +            elements[i] = i;
414 +        Collections.shuffle(Arrays.asList(elements));
415 +        Collection<Integer> full = populatedSet(elements);
416 +
417 +        Iterator it = full.iterator();
418 +        for (int j = 0; j < size; j++) {
419 +            assertTrue(it.hasNext());
420 +            it.next();
421 +        }
422 +        assertIteratorExhausted(it);
423 +    }
424 +
425 +    /**
426 +     * iterator of empty collections has no elements
427 +     */
428 +    public void testEmptyIterator() {
429 +        assertIteratorExhausted(ConcurrentHashMap.newKeySet().iterator());
430 +        assertIteratorExhausted(new ConcurrentHashMap().entrySet().iterator());
431 +        assertIteratorExhausted(new ConcurrentHashMap().values().iterator());
432 +        assertIteratorExhausted(new ConcurrentHashMap().keySet().iterator());
433 +    }
434 +
435 +    /**
436 +     * KeySet.iterator.remove removes current element
437 +     */
438 +    public void testIteratorRemove() {
439 +        Set q = populatedSet(3);
440 +        Iterator it = q.iterator();
441 +        Object removed = it.next();
442 +        it.remove();
443 +
444 +        it = q.iterator();
445 +        assertFalse(it.next().equals(removed));
446 +        assertFalse(it.next().equals(removed));
447 +        assertFalse(it.hasNext());
448 +    }
449 +
450 +    /**
451 +     * KeySet.toString holds toString of elements
452 +     */
453 +    public void testToString() {
454 +        assertEquals("[]", ConcurrentHashMap.newKeySet().toString());
455 +        Set full = populatedSet(3);
456 +        String s = full.toString();
457 +        for (int i = 0; i < 3; ++i)
458 +            assertTrue(s.contains(String.valueOf(i)));
459 +    }
460 +
461 +    /**
462 +     * KeySet.removeAll removes all elements from the given collection
463 +     */
464 +    public void testRemoveAll() {
465 +        Set full = populatedSet(3);
466 +        Vector v = new Vector();
467 +        v.add(one);
468 +        v.add(two);
469 +        full.removeAll(v);
470 +        assertEquals(1, full.size());
471 +    }
472 +
473 +    /**
474 +     * KeySet.remove removes an element
475 +     */
476 +    public void testRemove() {
477 +        Set full = populatedSet(3);
478 +        full.remove(one);
479 +        assertFalse(full.contains(one));
480 +        assertEquals(2, full.size());
481 +    }
482 +
483 +    /**
484 +     * keySet.size returns the number of elements
485 +     */
486 +    public void testSize() {
487 +        Set empty = ConcurrentHashMap.newKeySet();
488 +        Set full = populatedSet(3);
489 +        assertEquals(3, full.size());
490 +        assertEquals(0, empty.size());
491 +    }
492 +
493 +    /**
494 +     * KeySet.toArray() returns an Object array containing all elements from
495 +     * the set
496 +     */
497 +    public void testToArray() {
498 +        Object[] a = ConcurrentHashMap.newKeySet().toArray();
499 +        assertTrue(Arrays.equals(new Object[0], a));
500 +        assertSame(Object[].class, a.getClass());
501 +        int size = 20;
502 +        Integer[] elements = new Integer[size];
503 +        for (int i = 0; i < size; i++)
504 +            elements[i] = i;
505 +        Collections.shuffle(Arrays.asList(elements));
506 +        Collection<Integer> full = populatedSet(elements);
507 +
508 +        assertTrue(Arrays.asList(elements).containsAll(Arrays.asList(full.toArray())));
509 +        assertTrue(full.containsAll(Arrays.asList(full.toArray())));
510 +        assertSame(Object[].class, full.toArray().getClass());
511 +    }
512 +
513 +    /**
514 +     * toArray(Integer array) returns an Integer array containing all
515 +     * elements from the set
516 +     */
517 +    public void testToArray2() {
518 +        Collection empty = ConcurrentHashMap.newKeySet();
519 +        Integer[] a;
520 +        int size = 20;
521 +
522 +        a = new Integer[0];
523 +        assertSame(a, empty.toArray(a));
524 +
525 +        a = new Integer[size/2];
526 +        Arrays.fill(a, 42);
527 +        assertSame(a, empty.toArray(a));
528 +        assertNull(a[0]);
529 +        for (int i = 1; i < a.length; i++)
530 +            assertEquals(42, (int) a[i]);
531 +
532 +        Integer[] elements = new Integer[size];
533 +        for (int i = 0; i < size; i++)
534 +            elements[i] = i;
535 +        Collections.shuffle(Arrays.asList(elements));
536 +        Collection<Integer> full = populatedSet(elements);
537 +
538 +        Arrays.fill(a, 42);
539 +        assertTrue(Arrays.asList(elements).containsAll(Arrays.asList(full.toArray(a))));
540 +        for (int i = 0; i < a.length; i++)
541 +            assertEquals(42, (int) a[i]);
542 +        assertSame(Integer[].class, full.toArray(a).getClass());
543 +
544 +        a = new Integer[size];
545 +        Arrays.fill(a, 42);
546 +        assertSame(a, full.toArray(a));
547 +        assertTrue(Arrays.asList(elements).containsAll(Arrays.asList(full.toArray(a))));
548 +    }
549 +
550 +    /**
551 +     * A deserialized serialized set is equal
552 +     */
553 +    public void testSerialization() throws Exception {
554 +        int size = 20;
555 +        Set x = populatedSet(size);
556 +        Set y = serialClone(x);
557  
558 +        assertNotSame(x, y);
559 +        assertEquals(x.size(), y.size());
560 +        assertEquals(x, y);
561 +        assertEquals(y, x);
562 +    }
563 +
564 +    static final int SIZE = 10000;
565 +    static ConcurrentHashMap<Long, Long> longMap;
566 +
567 +    static ConcurrentHashMap<Long, Long> longMap() {
568 +        if (longMap == null) {
569 +            longMap = new ConcurrentHashMap<Long, Long>(SIZE);
570 +            for (int i = 0; i < SIZE; ++i)
571 +                longMap.put(Long.valueOf(i), Long.valueOf(2 *i));
572 +        }
573 +        return longMap;
574 +    }
575 +
576 +    // explicit function class to avoid type inference problems
577 +    static class AddKeys implements BiFunction<Map.Entry<Long,Long>, Map.Entry<Long,Long>, Map.Entry<Long,Long>> {
578 +        public Map.Entry<Long,Long> apply(Map.Entry<Long,Long> x, Map.Entry<Long,Long> y) {
579 +            return new AbstractMap.SimpleEntry<Long,Long>
580 +             (Long.valueOf(x.getKey().longValue() + y.getKey().longValue()),
581 +              Long.valueOf(1L));
582 +        }
583 +    }
584 +
585 +    /**
586 +     * forEachKeySequentially traverses all keys
587 +     */
588 +    public void testForEachKeySequentially() {
589 +        LongAdder adder = new LongAdder();
590 +        ConcurrentHashMap<Long, Long> m = longMap();
591 +        m.forEachKey(Long.MAX_VALUE, (Long x) -> adder.add(x.longValue()));
592 +        assertEquals(adder.sum(), SIZE * (SIZE - 1) / 2);
593 +    }
594 +
595 +    /**
596 +     * forEachValueSequentially traverses all values
597 +     */
598 +    public void testForEachValueSequentially() {
599 +        LongAdder adder = new LongAdder();
600 +        ConcurrentHashMap<Long, Long> m = longMap();
601 +        m.forEachValue(Long.MAX_VALUE, (Long x) -> adder.add(x.longValue()));
602 +        assertEquals(adder.sum(), SIZE * (SIZE - 1));
603 +    }
604 +
605 +    /**
606 +     * forEachSequentially traverses all mappings
607 +     */
608 +    public void testForEachSequentially() {
609 +        LongAdder adder = new LongAdder();
610 +        ConcurrentHashMap<Long, Long> m = longMap();
611 +        m.forEach(Long.MAX_VALUE, (Long x, Long y) -> adder.add(x.longValue() + y.longValue()));
612 +        assertEquals(adder.sum(), 3 * SIZE * (SIZE - 1) / 2);
613 +    }
614 +
615 +    /**
616 +     * forEachEntrySequentially traverses all entries
617 +     */
618 +    public void testForEachEntrySequentially() {
619 +        LongAdder adder = new LongAdder();
620 +        ConcurrentHashMap<Long, Long> m = longMap();
621 +        m.forEachEntry(Long.MAX_VALUE, (Map.Entry<Long,Long> e) -> adder.add(e.getKey().longValue() + e.getValue().longValue()));
622 +        assertEquals(adder.sum(), 3 * SIZE * (SIZE - 1) / 2);
623 +    }
624 +
625 +    /**
626 +     * forEachKeyInParallel traverses all keys
627 +     */
628 +    public void testForEachKeyInParallel() {
629 +        LongAdder adder = new LongAdder();
630 +        ConcurrentHashMap<Long, Long> m = longMap();
631 +        m.forEachKey(1L, (Long x) -> adder.add(x.longValue()));
632 +        assertEquals(adder.sum(), SIZE * (SIZE - 1) / 2);
633 +    }
634 +
635 +    /**
636 +     * forEachValueInParallel traverses all values
637 +     */
638 +    public void testForEachValueInParallel() {
639 +        LongAdder adder = new LongAdder();
640 +        ConcurrentHashMap<Long, Long> m = longMap();
641 +        m.forEachValue(1L, (Long x) -> adder.add(x.longValue()));
642 +        assertEquals(adder.sum(), SIZE * (SIZE - 1));
643 +    }
644 +
645 +    /**
646 +     * forEachInParallel traverses all mappings
647 +     */
648 +    public void testForEachInParallel() {
649 +        LongAdder adder = new LongAdder();
650 +        ConcurrentHashMap<Long, Long> m = longMap();
651 +        m.forEach(1L, (Long x, Long y) -> adder.add(x.longValue() + y.longValue()));
652 +        assertEquals(adder.sum(), 3 * SIZE * (SIZE - 1) / 2);
653 +    }
654 +
655 +    /**
656 +     * forEachEntryInParallel traverses all entries
657 +     */
658 +    public void testForEachEntryInParallel() {
659 +        LongAdder adder = new LongAdder();
660 +        ConcurrentHashMap<Long, Long> m = longMap();
661 +        m.forEachEntry(1L, (Map.Entry<Long,Long> e) -> adder.add(e.getKey().longValue() + e.getValue().longValue()));
662 +        assertEquals(adder.sum(), 3 * SIZE * (SIZE - 1) / 2);
663 +    }
664 +
665 +    /**
666 +     * Mapped forEachKeySequentially traverses the given
667 +     * transformations of all keys
668 +     */
669 +    public void testMappedForEachKeySequentially() {
670 +        LongAdder adder = new LongAdder();
671 +        ConcurrentHashMap<Long, Long> m = longMap();
672 +        m.forEachKey(Long.MAX_VALUE, (Long x) -> Long.valueOf(4 * x.longValue()),
673 +                                 (Long x) -> adder.add(x.longValue()));
674 +        assertEquals(adder.sum(), 4 * SIZE * (SIZE - 1) / 2);
675 +    }
676 +
677 +    /**
678 +     * Mapped forEachValueSequentially traverses the given
679 +     * transformations of all values
680 +     */
681 +    public void testMappedForEachValueSequentially() {
682 +        LongAdder adder = new LongAdder();
683 +        ConcurrentHashMap<Long, Long> m = longMap();
684 +        m.forEachValue(Long.MAX_VALUE, (Long x) -> Long.valueOf(4 * x.longValue()),
685 +                                   (Long x) -> adder.add(x.longValue()));
686 +        assertEquals(adder.sum(), 4 * SIZE * (SIZE - 1));
687 +    }
688 +
689 +    /**
690 +     * Mapped forEachSequentially traverses the given
691 +     * transformations of all mappings
692 +     */
693 +    public void testMappedForEachSequentially() {
694 +        LongAdder adder = new LongAdder();
695 +        ConcurrentHashMap<Long, Long> m = longMap();
696 +        m.forEach(Long.MAX_VALUE, (Long x, Long y) -> Long.valueOf(x.longValue() + y.longValue()),
697 +                              (Long x) -> adder.add(x.longValue()));
698 +        assertEquals(adder.sum(), 3 * SIZE * (SIZE - 1) / 2);
699 +    }
700 +
701 +    /**
702 +     * Mapped forEachEntrySequentially traverses the given
703 +     * transformations of all entries
704 +     */
705 +    public void testMappedForEachEntrySequentially() {
706 +        LongAdder adder = new LongAdder();
707 +        ConcurrentHashMap<Long, Long> m = longMap();
708 +        m.forEachEntry(Long.MAX_VALUE, (Map.Entry<Long,Long> e) -> Long.valueOf(e.getKey().longValue() + e.getValue().longValue()),
709 +                                   (Long x) -> adder.add(x.longValue()));
710 +        assertEquals(adder.sum(), 3 * SIZE * (SIZE - 1) / 2);
711 +    }
712 +
713 +    /**
714 +     * Mapped forEachKeyInParallel traverses the given
715 +     * transformations of all keys
716 +     */
717 +    public void testMappedForEachKeyInParallel() {
718 +        LongAdder adder = new LongAdder();
719 +        ConcurrentHashMap<Long, Long> m = longMap();
720 +        m.forEachKey(1L, (Long x) -> Long.valueOf(4 * x.longValue()),
721 +                               (Long x) -> adder.add(x.longValue()));
722 +        assertEquals(adder.sum(), 4 * SIZE * (SIZE - 1) / 2);
723 +    }
724 +
725 +    /**
726 +     * Mapped forEachValueInParallel traverses the given
727 +     * transformations of all values
728 +     */
729 +    public void testMappedForEachValueInParallel() {
730 +        LongAdder adder = new LongAdder();
731 +        ConcurrentHashMap<Long, Long> m = longMap();
732 +        m.forEachValue(1L, (Long x) -> Long.valueOf(4 * x.longValue()),
733 +                                 (Long x) -> adder.add(x.longValue()));
734 +        assertEquals(adder.sum(), 4 * SIZE * (SIZE - 1));
735 +    }
736 +
737 +    /**
738 +     * Mapped forEachInParallel traverses the given
739 +     * transformations of all mappings
740 +     */
741 +    public void testMappedForEachInParallel() {
742 +        LongAdder adder = new LongAdder();
743 +        ConcurrentHashMap<Long, Long> m = longMap();
744 +        m.forEach(1L, (Long x, Long y) -> Long.valueOf(x.longValue() + y.longValue()),
745 +                            (Long x) -> adder.add(x.longValue()));
746 +        assertEquals(adder.sum(), 3 * SIZE * (SIZE - 1) / 2);
747 +    }
748 +
749 +    /**
750 +     * Mapped forEachEntryInParallel traverses the given
751 +     * transformations of all entries
752 +     */
753 +    public void testMappedForEachEntryInParallel() {
754 +        LongAdder adder = new LongAdder();
755 +        ConcurrentHashMap<Long, Long> m = longMap();
756 +        m.forEachEntry(1L, (Map.Entry<Long,Long> e) -> Long.valueOf(e.getKey().longValue() + e.getValue().longValue()),
757 +                                 (Long x) -> adder.add(x.longValue()));
758 +        assertEquals(adder.sum(), 3 * SIZE * (SIZE - 1) / 2);
759 +    }
760 +
761 +    /**
762 +     * reduceKeysSequentially accumulates across all keys,
763 +     */
764 +    public void testReduceKeysSequentially() {
765 +        ConcurrentHashMap<Long, Long> m = longMap();
766 +        Long r;
767 +        r = m.reduceKeys(Long.MAX_VALUE, (Long x, Long y) -> Long.valueOf(x.longValue() + y.longValue()));
768 +        assertEquals((long)r, (long)SIZE * (SIZE - 1) / 2);
769 +    }
770 +
771 +    /**
772 +     * reduceValuesSequentially accumulates across all values
773 +     */
774 +    public void testReduceValuesSequentially() {
775 +        ConcurrentHashMap<Long, Long> m = longMap();
776 +        Long r;
777 +        r = m.reduceKeys(Long.MAX_VALUE, (Long x, Long y) -> Long.valueOf(x.longValue() + y.longValue()));
778 +        assertEquals((long)r, (long)SIZE * (SIZE - 1) / 2);
779 +    }
780 +
781 +    /**
782 +     * reduceEntriesSequentially accumulates across all entries
783 +     */
784 +    public void testReduceEntriesSequentially() {
785 +        ConcurrentHashMap<Long, Long> m = longMap();
786 +        Map.Entry<Long,Long> r;
787 +        r = m.reduceEntries(Long.MAX_VALUE, new AddKeys());
788 +        assertEquals(r.getKey().longValue(), (long)SIZE * (SIZE - 1) / 2);
789 +    }
790 +
791 +    /**
792 +     * reduceKeysInParallel accumulates across all keys
793 +     */
794 +    public void testReduceKeysInParallel() {
795 +        ConcurrentHashMap<Long, Long> m = longMap();
796 +        Long r;
797 +        r = m.reduceKeys(1L, (Long x, Long y) -> Long.valueOf(x.longValue() + y.longValue()));
798 +        assertEquals((long)r, (long)SIZE * (SIZE - 1) / 2);
799 +    }
800 +
801 +    /**
802 +     * reduceValuesInParallel accumulates across all values
803 +     */
804 +    public void testReduceValuesInParallel() {
805 +        ConcurrentHashMap<Long, Long> m = longMap();
806 +        Long r;
807 +        r = m.reduceValues(1L, (Long x, Long y) -> Long.valueOf(x.longValue() + y.longValue()));
808 +        assertEquals((long)r, (long)SIZE * (SIZE - 1));
809 +    }
810 +
811 +    /**
812 +     * reduceEntriesInParallel accumulate across all entries
813 +     */
814 +    public void testReduceEntriesInParallel() {
815 +        ConcurrentHashMap<Long, Long> m = longMap();
816 +        Map.Entry<Long,Long> r;
817 +        r = m.reduceEntries(1L, new AddKeys());
818 +        assertEquals(r.getKey().longValue(), (long)SIZE * (SIZE - 1) / 2);
819 +    }
820 +
821 +    /**
822 +     * Mapped reduceKeysSequentially accumulates mapped keys
823 +     */
824 +    public void testMapReduceKeysSequentially() {
825 +        ConcurrentHashMap<Long, Long> m = longMap();
826 +        Long r = m.reduceKeys(Long.MAX_VALUE, (Long x) -> Long.valueOf(4 * x.longValue()),
827 +                                     (Long x, Long y) -> Long.valueOf(x.longValue() + y.longValue()));
828 +        assertEquals((long)r, (long)4 * SIZE * (SIZE - 1) / 2);
829 +    }
830 +
831 +    /**
832 +     * Mapped reduceValuesSequentially accumulates mapped values
833 +     */
834 +    public void testMapReduceValuesSequentially() {
835 +        ConcurrentHashMap<Long, Long> m = longMap();
836 +        Long r = m.reduceValues(Long.MAX_VALUE, (Long x) -> Long.valueOf(4 * x.longValue()),
837 +                                       (Long x, Long y) -> Long.valueOf(x.longValue() + y.longValue()));
838 +        assertEquals((long)r, (long)4 * SIZE * (SIZE - 1));
839 +    }
840 +
841 +    /**
842 +     * reduceSequentially accumulates across all transformed mappings
843 +     */
844 +    public void testMappedReduceSequentially() {
845 +        ConcurrentHashMap<Long, Long> m = longMap();
846 +        Long r = m.reduce(Long.MAX_VALUE, (Long x, Long y) -> Long.valueOf(x.longValue() + y.longValue()),
847 +                                 (Long x, Long y) -> Long.valueOf(x.longValue() + y.longValue()));
848 +
849 +        assertEquals((long)r, (long)3 * SIZE * (SIZE - 1) / 2);
850 +    }
851 +
852 +    /**
853 +     * Mapped reduceKeysInParallel, accumulates mapped keys
854 +     */
855 +    public void testMapReduceKeysInParallel() {
856 +        ConcurrentHashMap<Long, Long> m = longMap();
857 +        Long r = m.reduceKeys(1L, (Long x) -> Long.valueOf(4 * x.longValue()),
858 +                                   (Long x, Long y) -> Long.valueOf(x.longValue() + y.longValue()));
859 +        assertEquals((long)r, (long)4 * SIZE * (SIZE - 1) / 2);
860 +    }
861 +
862 +    /**
863 +     * Mapped reduceValuesInParallel accumulates mapped values
864 +     */
865 +    public void testMapReduceValuesInParallel() {
866 +        ConcurrentHashMap<Long, Long> m = longMap();
867 +        Long r = m.reduceValues(1L, (Long x) -> Long.valueOf(4 * x.longValue()),
868 +                                     (Long x, Long y) -> Long.valueOf(x.longValue() + y.longValue()));
869 +        assertEquals((long)r, (long)4 * SIZE * (SIZE - 1));
870 +    }
871 +
872 +    /**
873 +     * reduceInParallel accumulate across all transformed mappings
874 +     */
875 +    public void testMappedReduceInParallel() {
876 +        ConcurrentHashMap<Long, Long> m = longMap();
877 +        Long r;
878 +        r = m.reduce(1L, (Long x, Long y) -> Long.valueOf(x.longValue() + y.longValue()),
879 +                               (Long x, Long y) -> Long.valueOf(x.longValue() + y.longValue()));
880 +        assertEquals((long)r, (long)3 * SIZE * (SIZE - 1) / 2);
881 +    }
882 +
883 +    /**
884 +     * reduceKeysToLongSequentially accumulates mapped keys
885 +     */
886 +    public void testReduceKeysToLongSequentially() {
887 +        ConcurrentHashMap<Long, Long> m = longMap();
888 +        long lr = m.reduceKeysToLong(Long.MAX_VALUE, (Long x) -> x.longValue(), 0L, Long::sum);
889 +        assertEquals(lr, (long)SIZE * (SIZE - 1) / 2);
890 +    }
891 +
892 +    /**
893 +     * reduceKeysToIntSequentially accumulates mapped keys
894 +     */
895 +    public void testReduceKeysToIntSequentially() {
896 +        ConcurrentHashMap<Long, Long> m = longMap();
897 +        int ir = m.reduceKeysToInt(Long.MAX_VALUE, (Long x) -> x.intValue(), 0, Integer::sum);
898 +        assertEquals(ir, SIZE * (SIZE - 1) / 2);
899 +    }
900 +
901 +    /**
902 +     * reduceKeysToDoubleSequentially accumulates mapped keys
903 +     */
904 +    public void testReduceKeysToDoubleSequentially() {
905 +        ConcurrentHashMap<Long, Long> m = longMap();
906 +        double dr = m.reduceKeysToDouble(Long.MAX_VALUE, (Long x) -> x.doubleValue(), 0.0, Double::sum);
907 +        assertEquals(dr, (double)SIZE * (SIZE - 1) / 2);
908 +    }
909 +
910 +    /**
911 +     * reduceValuesToLongSequentially accumulates mapped values
912 +     */
913 +    public void testReduceValuesToLongSequentially() {
914 +        ConcurrentHashMap<Long, Long> m = longMap();
915 +        long lr = m.reduceValuesToLong(Long.MAX_VALUE, (Long x) -> x.longValue(), 0L, Long::sum);
916 +        assertEquals(lr, (long)SIZE * (SIZE - 1));
917 +    }
918 +
919 +    /**
920 +     * reduceValuesToIntSequentially accumulates mapped values
921 +     */
922 +    public void testReduceValuesToIntSequentially() {
923 +        ConcurrentHashMap<Long, Long> m = longMap();
924 +        int ir = m.reduceValuesToInt(Long.MAX_VALUE, (Long x) -> x.intValue(), 0, Integer::sum);
925 +        assertEquals(ir, SIZE * (SIZE - 1));
926 +    }
927 +
928 +    /**
929 +     * reduceValuesToDoubleSequentially accumulates mapped values
930 +     */
931 +    public void testReduceValuesToDoubleSequentially() {
932 +        ConcurrentHashMap<Long, Long> m = longMap();
933 +        double dr = m.reduceValuesToDouble(Long.MAX_VALUE, (Long x) -> x.doubleValue(), 0.0, Double::sum);
934 +        assertEquals(dr, (double)SIZE * (SIZE - 1));
935 +    }
936 +
937 +    /**
938 +     * reduceKeysToLongInParallel accumulates mapped keys
939 +     */
940 +    public void testReduceKeysToLongInParallel() {
941 +        ConcurrentHashMap<Long, Long> m = longMap();
942 +        long lr = m.reduceKeysToLong(1L, (Long x) -> x.longValue(), 0L, Long::sum);
943 +        assertEquals(lr, (long)SIZE * (SIZE - 1) / 2);
944 +    }
945 +
946 +    /**
947 +     * reduceKeysToIntInParallel accumulates mapped keys
948 +     */
949 +    public void testReduceKeysToIntInParallel() {
950 +        ConcurrentHashMap<Long, Long> m = longMap();
951 +        int ir = m.reduceKeysToInt(1L, (Long x) -> x.intValue(), 0, Integer::sum);
952 +        assertEquals(ir, SIZE * (SIZE - 1) / 2);
953 +    }
954 +
955 +    /**
956 +     * reduceKeysToDoubleInParallel accumulates mapped values
957 +     */
958 +    public void testReduceKeysToDoubleInParallel() {
959 +        ConcurrentHashMap<Long, Long> m = longMap();
960 +        double dr = m.reduceKeysToDouble(1L, (Long x) -> x.doubleValue(), 0.0, Double::sum);
961 +        assertEquals(dr, (double)SIZE * (SIZE - 1) / 2);
962 +    }
963 +
964 +    /**
965 +     * reduceValuesToLongInParallel accumulates mapped values
966 +     */
967 +    public void testReduceValuesToLongInParallel() {
968 +        ConcurrentHashMap<Long, Long> m = longMap();
969 +        long lr = m.reduceValuesToLong(1L, (Long x) -> x.longValue(), 0L, Long::sum);
970 +        assertEquals(lr, (long)SIZE * (SIZE - 1));
971 +    }
972 +
973 +    /**
974 +     * reduceValuesToIntInParallel accumulates mapped values
975 +     */
976 +    public void testReduceValuesToIntInParallel() {
977 +        ConcurrentHashMap<Long, Long> m = longMap();
978 +        int ir = m.reduceValuesToInt(1L, (Long x) -> x.intValue(), 0, Integer::sum);
979 +        assertEquals(ir, SIZE * (SIZE - 1));
980 +    }
981 +
982 +    /**
983 +     * reduceValuesToDoubleInParallel accumulates mapped values
984 +     */
985 +    public void testReduceValuesToDoubleInParallel() {
986 +        ConcurrentHashMap<Long, Long> m = longMap();
987 +        double dr = m.reduceValuesToDouble(1L, (Long x) -> x.doubleValue(), 0.0, Double::sum);
988 +        assertEquals(dr, (double)SIZE * (SIZE - 1));
989 +    }
990 +
991 +    /**
992 +     * searchKeysSequentially returns a non-null result of search
993 +     * function, or null if none
994 +     */
995 +    public void testSearchKeysSequentially() {
996 +        ConcurrentHashMap<Long, Long> m = longMap();
997 +        Long r;
998 +        r = m.searchKeys(Long.MAX_VALUE, (Long x) -> x.longValue() == (long)(SIZE/2) ? x : null);
999 +        assertEquals((long)r, (long)(SIZE/2));
1000 +        r = m.searchKeys(Long.MAX_VALUE, (Long x) -> x.longValue() < 0L ? x : null);
1001 +        assertNull(r);
1002 +    }
1003 +
1004 +    /**
1005 +     * searchValuesSequentially returns a non-null result of search
1006 +     * function, or null if none
1007 +     */
1008 +    public void testSearchValuesSequentially() {
1009 +        ConcurrentHashMap<Long, Long> m = longMap();
1010 +        Long r;
1011 +        r = m.searchValues(Long.MAX_VALUE,
1012 +            (Long x) -> (x.longValue() == (long)(SIZE/2)) ? x : null);
1013 +        assertEquals((long)r, (long)(SIZE/2));
1014 +        r = m.searchValues(Long.MAX_VALUE,
1015 +            (Long x) -> (x.longValue() < 0L) ? x : null);
1016 +        assertNull(r);
1017 +    }
1018 +
1019 +    /**
1020 +     * searchSequentially returns a non-null result of search
1021 +     * function, or null if none
1022 +     */
1023 +    public void testSearchSequentially() {
1024 +        ConcurrentHashMap<Long, Long> m = longMap();
1025 +        Long r;
1026 +        r = m.search(Long.MAX_VALUE, (Long x, Long y) -> x.longValue() == (long)(SIZE/2) ? x : null);
1027 +        assertEquals((long)r, (long)(SIZE/2));
1028 +        r = m.search(Long.MAX_VALUE, (Long x, Long y) -> x.longValue() < 0L ? x : null);
1029 +        assertNull(r);
1030 +    }
1031 +
1032 +    /**
1033 +     * searchEntriesSequentially returns a non-null result of search
1034 +     * function, or null if none
1035 +     */
1036 +    public void testSearchEntriesSequentially() {
1037 +        ConcurrentHashMap<Long, Long> m = longMap();
1038 +        Long r;
1039 +        r = m.searchEntries(Long.MAX_VALUE, (Map.Entry<Long,Long> e) -> e.getKey().longValue() == (long)(SIZE/2) ? e.getKey() : null);
1040 +        assertEquals((long)r, (long)(SIZE/2));
1041 +        r = m.searchEntries(Long.MAX_VALUE, (Map.Entry<Long,Long> e) -> e.getKey().longValue() < 0L ? e.getKey() : null);
1042 +        assertNull(r);
1043 +    }
1044 +
1045 +    /**
1046 +     * searchKeysInParallel returns a non-null result of search
1047 +     * function, or null if none
1048 +     */
1049 +    public void testSearchKeysInParallel() {
1050 +        ConcurrentHashMap<Long, Long> m = longMap();
1051 +        Long r;
1052 +        r = m.searchKeys(1L, (Long x) -> x.longValue() == (long)(SIZE/2) ? x : null);
1053 +        assertEquals((long)r, (long)(SIZE/2));
1054 +        r = m.searchKeys(1L, (Long x) -> x.longValue() < 0L ? x : null);
1055 +        assertNull(r);
1056 +    }
1057 +
1058 +    /**
1059 +     * searchValuesInParallel returns a non-null result of search
1060 +     * function, or null if none
1061 +     */
1062 +    public void testSearchValuesInParallel() {
1063 +        ConcurrentHashMap<Long, Long> m = longMap();
1064 +        Long r;
1065 +        r = m.searchValues(1L, (Long x) -> x.longValue() == (long)(SIZE/2) ? x : null);
1066 +        assertEquals((long)r, (long)(SIZE/2));
1067 +        r = m.searchValues(1L, (Long x) -> x.longValue() < 0L ? x : null);
1068 +        assertNull(r);
1069 +    }
1070 +
1071 +    /**
1072 +     * searchInParallel returns a non-null result of search function,
1073 +     * or null if none
1074 +     */
1075 +    public void testSearchInParallel() {
1076 +        ConcurrentHashMap<Long, Long> m = longMap();
1077 +        Long r;
1078 +        r = m.search(1L, (Long x, Long y) -> x.longValue() == (long)(SIZE/2) ? x : null);
1079 +        assertEquals((long)r, (long)(SIZE/2));
1080 +        r = m.search(1L, (Long x, Long y) -> x.longValue() < 0L ? x : null);
1081 +        assertNull(r);
1082 +    }
1083 +
1084 +    /**
1085 +     * searchEntriesInParallel returns a non-null result of search
1086 +     * function, or null if none
1087 +     */
1088 +    public void testSearchEntriesInParallel() {
1089 +        ConcurrentHashMap<Long, Long> m = longMap();
1090 +        Long r;
1091 +        r = m.searchEntries(1L, (Map.Entry<Long,Long> e) -> e.getKey().longValue() == (long)(SIZE/2) ? e.getKey() : null);
1092 +        assertEquals((long)r, (long)(SIZE/2));
1093 +        r = m.searchEntries(1L, (Map.Entry<Long,Long> e) -> e.getKey().longValue() < 0L ? e.getKey() : null);
1094 +        assertNull(r);
1095 +    }
1096  
1097   }

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