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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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* Other contributors include Andrew Wright, Jeffrey Hayes, |
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* Pat Fisher, Mike Judd. |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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* Other contributors include Andrew Wright, Jeffrey Hayes, |
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* Pat Fisher, Mike Judd. |
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*/ |
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import junit.framework.*; |
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import java.util.Enumeration; |
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import java.io.*; |
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public class ConcurrentHashMapTest extends JSR166TestCase{ |
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public class ConcurrentHashMapTest 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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junit.textui.TestRunner.run(suite()); |
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} |
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public static Test suite() { |
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return new TestSuite(ConcurrentHashMapTest.class); |
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return new TestSuite(ConcurrentHashMapTest.class); |
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} |
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|
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/** |
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* Create a map from Integers 1-5 to Strings "A"-"E". |
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*/ |
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private static ConcurrentHashMap map5() { |
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ConcurrentHashMap map = new ConcurrentHashMap(5); |
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private static ConcurrentHashMap map5() { |
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ConcurrentHashMap map = new ConcurrentHashMap(5); |
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assertTrue(map.isEmpty()); |
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map.put(one, "A"); |
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map.put(two, "B"); |
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map.put(three, "C"); |
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map.put(four, "D"); |
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map.put(five, "E"); |
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map.put(one, "A"); |
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map.put(two, "B"); |
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map.put(three, "C"); |
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map.put(four, "D"); |
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map.put(five, "E"); |
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assertFalse(map.isEmpty()); |
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assertEquals(5, map.size()); |
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return map; |
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return map; |
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} |
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|
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/** |
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* clear removes all pairs |
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* clear removes all pairs |
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*/ |
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public void testClear() { |
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ConcurrentHashMap map = map5(); |
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map.clear(); |
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assertEquals(map.size(), 0); |
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map.clear(); |
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assertEquals(map.size(), 0); |
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} |
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|
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/** |
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* Maps with same contents are equal |
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* Maps with same contents are equal |
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*/ |
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public void testEquals() { |
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ConcurrentHashMap map1 = map5(); |
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ConcurrentHashMap map2 = map5(); |
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assertEquals(map1, map2); |
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assertEquals(map2, map1); |
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map1.clear(); |
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map1.clear(); |
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assertFalse(map1.equals(map2)); |
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assertFalse(map2.equals(map1)); |
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} |
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|
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/** |
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* contains returns true for contained value |
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* contains returns true for contained value |
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*/ |
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public void testContains() { |
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ConcurrentHashMap map = map5(); |
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assertTrue(map.contains("A")); |
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assertTrue(map.contains("A")); |
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assertFalse(map.contains("Z")); |
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} |
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|
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/** |
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* containsKey returns true for contained key |
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* containsKey returns true for contained key |
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*/ |
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public void testContainsKey() { |
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ConcurrentHashMap map = map5(); |
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assertTrue(map.containsKey(one)); |
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assertTrue(map.containsKey(one)); |
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assertFalse(map.containsKey(zero)); |
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} |
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|
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/** |
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* containsValue returns true for held values |
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* containsValue returns true for held values |
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*/ |
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public void testContainsValue() { |
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ConcurrentHashMap map = map5(); |
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assertTrue(map.containsValue("A")); |
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assertTrue(map.containsValue("A")); |
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assertFalse(map.containsValue("Z")); |
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} |
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/** |
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* enumeration returns an enumeration containing the correct |
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* elements |
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* enumeration returns an enumeration containing the correct |
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* elements |
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*/ |
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public void testEnumeration() { |
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ConcurrentHashMap map = map5(); |
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Enumeration e = map.elements(); |
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int count = 0; |
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while(e.hasMoreElements()){ |
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count++; |
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e.nextElement(); |
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} |
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assertEquals(5, count); |
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Enumeration e = map.elements(); |
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int count = 0; |
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while (e.hasMoreElements()) { |
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count++; |
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e.nextElement(); |
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} |
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assertEquals(5, count); |
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} |
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/** |
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* get returns the correct element at the given key, |
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* or null if not present |
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* get returns the correct element at the given key, |
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* or null if not present |
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*/ |
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public void testGet() { |
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ConcurrentHashMap map = map5(); |
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assertEquals("A", (String)map.get(one)); |
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assertEquals("A", (String)map.get(one)); |
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ConcurrentHashMap empty = new ConcurrentHashMap(); |
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assertNull(map.get("anything")); |
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} |
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/** |
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* isEmpty is true of empty map and false for non-empty |
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* isEmpty is true of empty map and false for non-empty |
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*/ |
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public void testIsEmpty() { |
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ConcurrentHashMap empty = new ConcurrentHashMap(); |
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ConcurrentHashMap map = map5(); |
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assertTrue(empty.isEmpty()); |
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assertTrue(empty.isEmpty()); |
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assertFalse(map.isEmpty()); |
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} |
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/** |
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* keys returns an enumeration containing all the keys from the map |
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* keys returns an enumeration containing all the keys from the map |
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*/ |
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public void testKeys() { |
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ConcurrentHashMap map = map5(); |
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Enumeration e = map.keys(); |
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int count = 0; |
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while(e.hasMoreElements()){ |
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count++; |
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e.nextElement(); |
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} |
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assertEquals(5, count); |
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Enumeration e = map.keys(); |
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int count = 0; |
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while (e.hasMoreElements()) { |
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count++; |
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e.nextElement(); |
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} |
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assertEquals(5, count); |
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} |
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/** |
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* keySet returns a Set containing all the keys |
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* keySet returns a Set containing all the keys |
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*/ |
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public void testKeySet() { |
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ConcurrentHashMap map = map5(); |
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Set s = map.keySet(); |
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assertEquals(5, s.size()); |
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assertTrue(s.contains(one)); |
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assertTrue(s.contains(two)); |
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assertTrue(s.contains(three)); |
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assertTrue(s.contains(four)); |
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assertTrue(s.contains(five)); |
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Set s = map.keySet(); |
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assertEquals(5, s.size()); |
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assertTrue(s.contains(one)); |
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assertTrue(s.contains(two)); |
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assertTrue(s.contains(three)); |
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assertTrue(s.contains(four)); |
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assertTrue(s.contains(five)); |
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} |
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/** |
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* keySet.toArray returns contains all keys |
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* keySet.toArray returns contains all keys |
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*/ |
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public void testKeySetToArray() { |
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ConcurrentHashMap map = map5(); |
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Set s = map.keySet(); |
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Set s = map.keySet(); |
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Object[] ar = s.toArray(); |
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assertTrue(s.containsAll(Arrays.asList(ar))); |
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assertEquals(5, ar.length); |
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assertEquals(5, ar.length); |
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ar[0] = m10; |
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assertFalse(s.containsAll(Arrays.asList(ar))); |
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} |
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|
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/** |
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* Values.toArray contains all values |
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* Values.toArray contains all values |
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*/ |
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public void testValuesToArray() { |
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ConcurrentHashMap map = map5(); |
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Collection v = map.values(); |
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Collection v = map.values(); |
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Object[] ar = v.toArray(); |
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ArrayList s = new ArrayList(Arrays.asList(ar)); |
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assertEquals(5, ar.length); |
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assertTrue(s.contains("A")); |
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assertTrue(s.contains("B")); |
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assertTrue(s.contains("C")); |
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assertTrue(s.contains("D")); |
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assertTrue(s.contains("E")); |
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assertEquals(5, ar.length); |
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assertTrue(s.contains("A")); |
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assertTrue(s.contains("B")); |
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assertTrue(s.contains("C")); |
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assertTrue(s.contains("D")); |
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assertTrue(s.contains("E")); |
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} |
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/** |
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* entrySet.toArray contains all entries |
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* entrySet.toArray contains all entries |
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*/ |
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public void testEntrySetToArray() { |
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ConcurrentHashMap map = map5(); |
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Set s = map.entrySet(); |
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Set s = map.entrySet(); |
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Object[] ar = s.toArray(); |
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assertEquals(5, ar.length); |
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for (int i = 0; i < 5; ++i) { |
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*/ |
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public void testValues() { |
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ConcurrentHashMap map = map5(); |
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Collection s = map.values(); |
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assertEquals(5, s.size()); |
202 |
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assertTrue(s.contains("A")); |
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assertTrue(s.contains("B")); |
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assertTrue(s.contains("C")); |
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assertTrue(s.contains("D")); |
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assertTrue(s.contains("E")); |
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Collection s = map.values(); |
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assertEquals(5, s.size()); |
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assertTrue(s.contains("A")); |
203 |
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assertTrue(s.contains("B")); |
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assertTrue(s.contains("C")); |
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assertTrue(s.contains("D")); |
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assertTrue(s.contains("E")); |
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} |
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/** |
211 |
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*/ |
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public void testEntrySet() { |
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ConcurrentHashMap map = map5(); |
214 |
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Set s = map.entrySet(); |
215 |
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assertEquals(5, s.size()); |
214 |
> |
Set s = map.entrySet(); |
215 |
> |
assertEquals(5, s.size()); |
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Iterator it = s.iterator(); |
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while (it.hasNext()) { |
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Map.Entry e = (Map.Entry) it.next(); |
219 |
< |
assertTrue( |
219 |
> |
assertTrue( |
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(e.getKey().equals(one) && e.getValue().equals("A")) || |
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(e.getKey().equals(two) && e.getValue().equals("B")) || |
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(e.getKey().equals(three) && e.getValue().equals("C")) || |
226 |
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} |
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|
228 |
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/** |
229 |
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* putAll adds all key-value pairs from the given map |
229 |
> |
* putAll adds all key-value pairs from the given map |
230 |
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*/ |
231 |
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public void testPutAll() { |
232 |
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ConcurrentHashMap empty = new ConcurrentHashMap(); |
233 |
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ConcurrentHashMap map = map5(); |
234 |
< |
empty.putAll(map); |
235 |
< |
assertEquals(5, empty.size()); |
236 |
< |
assertTrue(empty.containsKey(one)); |
237 |
< |
assertTrue(empty.containsKey(two)); |
238 |
< |
assertTrue(empty.containsKey(three)); |
239 |
< |
assertTrue(empty.containsKey(four)); |
240 |
< |
assertTrue(empty.containsKey(five)); |
234 |
> |
empty.putAll(map); |
235 |
> |
assertEquals(5, empty.size()); |
236 |
> |
assertTrue(empty.containsKey(one)); |
237 |
> |
assertTrue(empty.containsKey(two)); |
238 |
> |
assertTrue(empty.containsKey(three)); |
239 |
> |
assertTrue(empty.containsKey(four)); |
240 |
> |
assertTrue(empty.containsKey(five)); |
241 |
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} |
242 |
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|
243 |
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/** |
244 |
< |
* putIfAbsent works when the given key is not present |
244 |
> |
* putIfAbsent works when the given key is not present |
245 |
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*/ |
246 |
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public void testPutIfAbsent() { |
247 |
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ConcurrentHashMap map = map5(); |
248 |
< |
map.putIfAbsent(six, "Z"); |
248 |
> |
map.putIfAbsent(six, "Z"); |
249 |
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assertTrue(map.containsKey(six)); |
250 |
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} |
251 |
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|
252 |
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/** |
253 |
< |
* putIfAbsent does not add the pair if the key is already present |
253 |
> |
* putIfAbsent does not add the pair if the key is already present |
254 |
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*/ |
255 |
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public void testPutIfAbsent2() { |
256 |
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ConcurrentHashMap map = map5(); |
258 |
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} |
259 |
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|
260 |
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/** |
261 |
< |
* replace fails when the given key is not present |
261 |
> |
* replace fails when the given key is not present |
262 |
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*/ |
263 |
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public void testReplace() { |
264 |
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ConcurrentHashMap map = map5(); |
265 |
< |
assertNull(map.replace(six, "Z")); |
265 |
> |
assertNull(map.replace(six, "Z")); |
266 |
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assertFalse(map.containsKey(six)); |
267 |
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} |
268 |
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|
269 |
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/** |
270 |
< |
* replace succeeds if the key is already present |
270 |
> |
* replace succeeds if the key is already present |
271 |
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*/ |
272 |
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public void testReplace2() { |
273 |
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ConcurrentHashMap map = map5(); |
275 |
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assertEquals("Z", map.get(one)); |
276 |
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} |
277 |
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|
278 |
– |
|
278 |
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/** |
279 |
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* replace value fails when the given key not mapped to expected value |
280 |
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*/ |
281 |
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public void testReplaceValue() { |
282 |
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ConcurrentHashMap map = map5(); |
283 |
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assertEquals("A", map.get(one)); |
284 |
< |
assertFalse(map.replace(one, "Z", "Z")); |
284 |
> |
assertFalse(map.replace(one, "Z", "Z")); |
285 |
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assertEquals("A", map.get(one)); |
286 |
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} |
287 |
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|
291 |
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public void testReplaceValue2() { |
292 |
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ConcurrentHashMap map = map5(); |
293 |
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assertEquals("A", map.get(one)); |
294 |
< |
assertTrue(map.replace(one, "A", "Z")); |
294 |
> |
assertTrue(map.replace(one, "A", "Z")); |
295 |
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assertEquals("Z", map.get(one)); |
296 |
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} |
297 |
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|
299 |
– |
|
298 |
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/** |
299 |
< |
* remove removes the correct key-value pair from the map |
299 |
> |
* remove removes the correct key-value pair from the map |
300 |
|
*/ |
301 |
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public void testRemove() { |
302 |
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ConcurrentHashMap map = map5(); |
303 |
< |
map.remove(five); |
304 |
< |
assertEquals(4, map.size()); |
305 |
< |
assertFalse(map.containsKey(five)); |
303 |
> |
map.remove(five); |
304 |
> |
assertEquals(4, map.size()); |
305 |
> |
assertFalse(map.containsKey(five)); |
306 |
|
} |
307 |
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|
308 |
|
/** |
310 |
|
*/ |
311 |
|
public void testRemove2() { |
312 |
|
ConcurrentHashMap map = map5(); |
313 |
< |
map.remove(five, "E"); |
314 |
< |
assertEquals(4, map.size()); |
315 |
< |
assertFalse(map.containsKey(five)); |
316 |
< |
map.remove(four, "A"); |
317 |
< |
assertEquals(4, map.size()); |
318 |
< |
assertTrue(map.containsKey(four)); |
321 |
< |
|
313 |
> |
map.remove(five, "E"); |
314 |
> |
assertEquals(4, map.size()); |
315 |
> |
assertFalse(map.containsKey(five)); |
316 |
> |
map.remove(four, "A"); |
317 |
> |
assertEquals(4, map.size()); |
318 |
> |
assertTrue(map.containsKey(four)); |
319 |
|
} |
320 |
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|
321 |
|
/** |
322 |
< |
* size returns the correct values |
322 |
> |
* size returns the correct values |
323 |
|
*/ |
324 |
|
public void testSize() { |
325 |
|
ConcurrentHashMap map = map5(); |
326 |
|
ConcurrentHashMap empty = new ConcurrentHashMap(); |
327 |
< |
assertEquals(0, empty.size()); |
328 |
< |
assertEquals(5, map.size()); |
327 |
> |
assertEquals(0, empty.size()); |
328 |
> |
assertEquals(5, map.size()); |
329 |
|
} |
330 |
|
|
331 |
|
/** |
335 |
|
ConcurrentHashMap map = map5(); |
336 |
|
String s = map.toString(); |
337 |
|
for (int i = 1; i <= 5; ++i) { |
338 |
< |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
338 |
> |
assertTrue(s.contains(String.valueOf(i))); |
339 |
|
} |
340 |
< |
} |
340 |
> |
} |
341 |
|
|
342 |
|
// Exception tests |
343 |
< |
|
343 |
> |
|
344 |
|
/** |
345 |
< |
* Cannot create with negative capacity |
345 |
> |
* Cannot create with negative capacity |
346 |
|
*/ |
347 |
|
public void testConstructor1() { |
348 |
|
try { |
349 |
|
new ConcurrentHashMap(-1,0,1); |
350 |
|
shouldThrow(); |
351 |
< |
} catch(IllegalArgumentException e){} |
351 |
> |
} catch (IllegalArgumentException success) {} |
352 |
|
} |
353 |
|
|
354 |
|
/** |
358 |
|
try { |
359 |
|
new ConcurrentHashMap(1,0,-1); |
360 |
|
shouldThrow(); |
361 |
< |
} catch(IllegalArgumentException e){} |
361 |
> |
} catch (IllegalArgumentException success) {} |
362 |
|
} |
363 |
|
|
364 |
|
/** |
368 |
|
try { |
369 |
|
new ConcurrentHashMap(-1); |
370 |
|
shouldThrow(); |
371 |
< |
} catch(IllegalArgumentException e){} |
371 |
> |
} catch (IllegalArgumentException success) {} |
372 |
|
} |
373 |
|
|
374 |
|
/** |
379 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
380 |
|
c.get(null); |
381 |
|
shouldThrow(); |
382 |
< |
} catch(NullPointerException e){} |
382 |
> |
} catch (NullPointerException success) {} |
383 |
|
} |
384 |
|
|
385 |
|
/** |
390 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
391 |
|
c.containsKey(null); |
392 |
|
shouldThrow(); |
393 |
< |
} catch(NullPointerException e){} |
393 |
> |
} catch (NullPointerException success) {} |
394 |
|
} |
395 |
|
|
396 |
|
/** |
401 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
402 |
|
c.containsValue(null); |
403 |
|
shouldThrow(); |
404 |
< |
} catch(NullPointerException e){} |
404 |
> |
} catch (NullPointerException success) {} |
405 |
|
} |
406 |
|
|
407 |
|
/** |
412 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
413 |
|
c.contains(null); |
414 |
|
shouldThrow(); |
415 |
< |
} catch(NullPointerException e){} |
415 |
> |
} catch (NullPointerException success) {} |
416 |
|
} |
417 |
|
|
418 |
|
/** |
423 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
424 |
|
c.put(null, "whatever"); |
425 |
|
shouldThrow(); |
426 |
< |
} catch(NullPointerException e){} |
426 |
> |
} catch (NullPointerException success) {} |
427 |
|
} |
428 |
|
|
429 |
|
/** |
434 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
435 |
|
c.put("whatever", null); |
436 |
|
shouldThrow(); |
437 |
< |
} catch(NullPointerException e){} |
437 |
> |
} catch (NullPointerException success) {} |
438 |
|
} |
439 |
|
|
440 |
|
/** |
445 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
446 |
|
c.putIfAbsent(null, "whatever"); |
447 |
|
shouldThrow(); |
448 |
< |
} catch(NullPointerException e){} |
448 |
> |
} catch (NullPointerException success) {} |
449 |
|
} |
450 |
|
|
451 |
|
/** |
456 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
457 |
|
c.replace(null, "whatever"); |
458 |
|
shouldThrow(); |
459 |
< |
} catch(NullPointerException e){} |
459 |
> |
} catch (NullPointerException success) {} |
460 |
|
} |
461 |
|
|
462 |
|
/** |
467 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
468 |
|
c.replace(null, one, "whatever"); |
469 |
|
shouldThrow(); |
470 |
< |
} catch(NullPointerException e){} |
470 |
> |
} catch (NullPointerException success) {} |
471 |
|
} |
472 |
|
|
473 |
|
/** |
478 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
479 |
|
c.putIfAbsent("whatever", null); |
480 |
|
shouldThrow(); |
481 |
< |
} catch(NullPointerException e){} |
481 |
> |
} catch (NullPointerException success) {} |
482 |
|
} |
483 |
|
|
487 |
– |
|
484 |
|
/** |
485 |
|
* replace(x, null) throws NPE |
486 |
|
*/ |
489 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
490 |
|
c.replace("whatever", null); |
491 |
|
shouldThrow(); |
492 |
< |
} catch(NullPointerException e){} |
492 |
> |
} catch (NullPointerException success) {} |
493 |
|
} |
494 |
|
|
495 |
|
/** |
500 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
501 |
|
c.replace("whatever", null, "A"); |
502 |
|
shouldThrow(); |
503 |
< |
} catch(NullPointerException e){} |
503 |
> |
} catch (NullPointerException success) {} |
504 |
|
} |
505 |
|
|
506 |
|
/** |
511 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
512 |
|
c.replace("whatever", one, null); |
513 |
|
shouldThrow(); |
514 |
< |
} catch(NullPointerException e){} |
514 |
> |
} catch (NullPointerException success) {} |
515 |
|
} |
516 |
|
|
521 |
– |
|
517 |
|
/** |
518 |
|
* remove(null) throws NPE |
519 |
|
*/ |
523 |
|
c.put("sadsdf", "asdads"); |
524 |
|
c.remove(null); |
525 |
|
shouldThrow(); |
526 |
< |
} catch(NullPointerException e){} |
526 |
> |
} catch (NullPointerException success) {} |
527 |
|
} |
528 |
|
|
529 |
|
/** |
535 |
|
c.put("sadsdf", "asdads"); |
536 |
|
c.remove(null, "whatever"); |
537 |
|
shouldThrow(); |
538 |
< |
} catch(NullPointerException e){} |
538 |
> |
} catch (NullPointerException success) {} |
539 |
|
} |
540 |
|
|
541 |
|
/** |
542 |
|
* remove(x, null) returns false |
543 |
|
*/ |
544 |
|
public void testRemove3() { |
545 |
< |
try { |
546 |
< |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
547 |
< |
c.put("sadsdf", "asdads"); |
553 |
< |
assertFalse(c.remove("sadsdf", null)); |
554 |
< |
} catch(NullPointerException e){ |
555 |
< |
fail(); |
556 |
< |
} |
545 |
> |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
546 |
> |
c.put("sadsdf", "asdads"); |
547 |
> |
assertFalse(c.remove("sadsdf", null)); |
548 |
|
} |
549 |
|
|
550 |
|
/** |
551 |
|
* A deserialized map equals original |
552 |
|
*/ |
553 |
< |
public void testSerialization() { |
553 |
> |
public void testSerialization() throws Exception { |
554 |
|
ConcurrentHashMap q = map5(); |
555 |
|
|
556 |
< |
try { |
557 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
558 |
< |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
559 |
< |
out.writeObject(q); |
560 |
< |
out.close(); |
561 |
< |
|
562 |
< |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
563 |
< |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
564 |
< |
ConcurrentHashMap r = (ConcurrentHashMap)in.readObject(); |
565 |
< |
assertEquals(q.size(), r.size()); |
566 |
< |
assertTrue(q.equals(r)); |
576 |
< |
assertTrue(r.equals(q)); |
577 |
< |
} catch(Exception e){ |
578 |
< |
e.printStackTrace(); |
579 |
< |
unexpectedException(); |
580 |
< |
} |
556 |
> |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
557 |
> |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
558 |
> |
out.writeObject(q); |
559 |
> |
out.close(); |
560 |
> |
|
561 |
> |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
562 |
> |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
563 |
> |
ConcurrentHashMap r = (ConcurrentHashMap)in.readObject(); |
564 |
> |
assertEquals(q.size(), r.size()); |
565 |
> |
assertTrue(q.equals(r)); |
566 |
> |
assertTrue(r.equals(q)); |
567 |
|
} |
568 |
|
|
583 |
– |
|
569 |
|
/** |
570 |
|
* SetValue of an EntrySet entry sets value in the map. |
571 |
|
*/ |
572 |
|
public void testSetValueWriteThrough() { |
573 |
< |
// Adapted from a bug report by Eric Zoerner |
573 |
> |
// Adapted from a bug report by Eric Zoerner |
574 |
|
ConcurrentHashMap map = new ConcurrentHashMap(2, 5.0f, 1); |
575 |
|
assertTrue(map.isEmpty()); |
576 |
|
for (int i = 0; i < 20; i++) |
577 |
|
map.put(new Integer(i), new Integer(i)); |
578 |
|
assertFalse(map.isEmpty()); |
579 |
|
Map.Entry entry1 = (Map.Entry)map.entrySet().iterator().next(); |
580 |
< |
|
580 |
> |
|
581 |
|
// assert that entry1 is not 16 |
582 |
|
assertTrue("entry is 16, test not valid", |
583 |
|
!entry1.getKey().equals(new Integer(16))); |
584 |
< |
|
585 |
< |
// remove 16 (a different key) from map |
584 |
> |
|
585 |
> |
// remove 16 (a different key) from map |
586 |
|
// which just happens to cause entry1 to be cloned in map |
587 |
|
map.remove(new Integer(16)); |
588 |
|
entry1.setValue("XYZ"); |
589 |
|
assertTrue(map.containsValue("XYZ")); // fails |
590 |
|
} |
591 |
< |
|
591 |
> |
|
592 |
|
} |