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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.ConcurrentHashMap.KeySetView; |
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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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} |
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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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* 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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* 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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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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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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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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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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Set set1 = map.keySet(); |
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Set set2 = map.keySet(true); |
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set2.add(six); |
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assertTrue(((KeySetView)set2).getMap() == map); |
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assertTrue(((KeySetView)set1).getMap() == map); |
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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()); |
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assertEquals(set1.size(), map.size()); |
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assertTrue((Boolean)map.get(six)); |
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assertFalse(set2.contains(six)); |
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} |
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/** |
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* keySet.addAll adds each element from the given collection |
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*/ |
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public void testAddAll() { |
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Set full = populatedSet(3); |
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Vector v = new Vector(); |
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v.add(three); |
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v.add(four); |
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v.add(five); |
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full.addAll(v); |
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assertTrue(full.addAll(Arrays.asList(three, four, five))); |
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assertEquals(6, full.size()); |
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assertFalse(full.addAll(Arrays.asList(three, four, five))); |
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assertEquals(6, full.size()); |
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} |
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*/ |
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public void testAddAll2() { |
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Set full = populatedSet(3); |
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Vector v = new Vector(); |
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v.add(three); |
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v.add(four); |
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v.add(one); // will not add this element |
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full.addAll(v); |
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// "one" is duplicate and will not be added |
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assertTrue(full.addAll(Arrays.asList(three, four, one))); |
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assertEquals(5, full.size()); |
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assertFalse(full.addAll(Arrays.asList(three, four, one))); |
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assertEquals(5, full.size()); |
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} |
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map.keySet(null); |
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shouldThrow(); |
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} catch (NullPointerException e) {} |
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KeySetView set = map.keySet(one); |
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ConcurrentHashMap.KeySetView set = map.keySet(one); |
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set.add(one); |
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set.add(six); |
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set.add(seven); |
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assertTrue(map.get(seven) == one); |
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} |
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void checkSpliteratorCharacteristics(Spliterator<?> sp, |
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int requiredCharacteristics) { |
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assertEquals(requiredCharacteristics, |
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requiredCharacteristics & sp.characteristics()); |
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} |
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|
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/** |
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* KeySetView.spliterator returns spliterator over the elements in this set |
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*/ |
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ConcurrentHashMap map = map5(); |
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Set set = map.keySet(); |
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Spliterator<Integer> sp = set.spliterator(); |
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checkSpliteratorCharacteristics(sp, CONCURRENT | DISTINCT | NONNULL); |
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assertEquals(sp.estimateSize(), map.size()); |
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Spliterator<Integer> sp2 = sp.trySplit(); |
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sp.forEachRemaining((Integer x) -> adder.add(x.longValue())); |
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* KeySet.containsAll returns true for collections with subset of elements |
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*/ |
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public void testContainsAll() { |
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Set full = populatedSet(3); |
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Vector v = new Vector(); |
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v.add(one); |
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v.add(two); |
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assertTrue(full.containsAll(v)); |
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v.add(six); |
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assertFalse(full.containsAll(v)); |
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Collection full = populatedSet(3); |
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assertTrue(full.containsAll(Arrays.asList())); |
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assertTrue(full.containsAll(Arrays.asList(one))); |
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assertTrue(full.containsAll(Arrays.asList(one, two))); |
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assertFalse(full.containsAll(Arrays.asList(one, two, six))); |
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assertFalse(full.containsAll(Arrays.asList(six))); |
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} |
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/** |
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* KeySet.isEmpty is true when empty, else false |
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*/ |
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public void testIsEmpty() { |
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Set empty = ConcurrentHashMap.newKeySet(); |
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Set full = populatedSet(3); |
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assertTrue(empty.isEmpty()); |
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assertFalse(full.isEmpty()); |
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assertTrue(populatedSet(0).isEmpty()); |
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assertFalse(populatedSet(3).isEmpty()); |
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} |
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/** |
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assertTrue(it.hasNext()); |
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it.next(); |
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} |
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assertFalse(it.hasNext()); |
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try { |
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it.next(); |
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shouldThrow(); |
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} catch (NoSuchElementException success) {} |
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assertIteratorExhausted(it); |
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} |
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|
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/** |
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* iterator of empty collections has no elements |
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*/ |
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public void testEmptyIterator() { |
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assertIteratorExhausted(ConcurrentHashMap.newKeySet().iterator()); |
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assertIteratorExhausted(new ConcurrentHashMap().entrySet().iterator()); |
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assertIteratorExhausted(new ConcurrentHashMap().values().iterator()); |
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assertIteratorExhausted(new ConcurrentHashMap().keySet().iterator()); |
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} |
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/** |
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*/ |
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public void testRemoveAll() { |
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Set full = populatedSet(3); |
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Vector v = new Vector(); |
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v.add(one); |
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v.add(two); |
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full.removeAll(v); |
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assertTrue(full.removeAll(Arrays.asList(one, two))); |
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assertEquals(1, full.size()); |
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assertFalse(full.removeAll(Arrays.asList(one, two))); |
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assertEquals(1, full.size()); |
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} |
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assertNotSame(x, y); |
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assertEquals(x.size(), y.size()); |
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assertEquals(x.toString(), y.toString()); |
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assertTrue(Arrays.equals(x.toArray(), y.toArray())); |
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assertEquals(x, y); |
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assertEquals(y, x); |
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} |
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public void testSearchValuesSequentially() { |
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ConcurrentHashMap<Long, Long> m = longMap(); |
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Long r; |
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r = m.searchValues(Long.MAX_VALUE, (Long x) -> x.longValue() == (long)(SIZE/2)? x : null); |
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r = m.searchValues(Long.MAX_VALUE, |
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(Long x) -> (x.longValue() == (long)(SIZE/2)) ? x : null); |
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assertEquals((long)r, (long)(SIZE/2)); |
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r = m.searchValues(Long.MAX_VALUE, (Long x) -> x.longValue() < 0L ? x : null); |
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r = m.searchValues(Long.MAX_VALUE, |
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(Long x) -> (x.longValue() < 0L) ? x : null); |
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assertNull(r); |
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} |
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