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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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* Other contributors include Andrew Wright, Jeffrey Hayes, |
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* Pat Fisher, Mike Judd. |
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*/ |
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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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|
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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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*/ |
26 |
< |
private static ConcurrentHashMap map5() { |
27 |
< |
ConcurrentHashMap map = new ConcurrentHashMap(5); |
26 |
> |
private static ConcurrentHashMap map5() { |
27 |
> |
ConcurrentHashMap map = new ConcurrentHashMap(5); |
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assertTrue(map.isEmpty()); |
29 |
< |
map.put(one, "A"); |
30 |
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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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*/ |
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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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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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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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/** |
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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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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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*/ |
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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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/** |
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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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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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*/ |
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public void testKeys() { |
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ConcurrentHashMap map = map5(); |
129 |
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Enumeration e = map.keys(); |
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int count = 0; |
131 |
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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; |
131 |
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while (e.hasMoreElements()) { |
132 |
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count++; |
133 |
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e.nextElement(); |
134 |
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} |
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assertEquals(5, count); |
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} |
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|
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/** |
140 |
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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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/** |
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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(); |
157 |
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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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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)); |
173 |
< |
assertEquals(5, ar.length); |
174 |
< |
assertTrue(s.contains("A")); |
175 |
< |
assertTrue(s.contains("B")); |
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< |
assertTrue(s.contains("C")); |
177 |
< |
assertTrue(s.contains("D")); |
178 |
< |
assertTrue(s.contains("E")); |
173 |
> |
assertEquals(5, ar.length); |
174 |
> |
assertTrue(s.contains("A")); |
175 |
> |
assertTrue(s.contains("B")); |
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> |
assertTrue(s.contains("C")); |
177 |
> |
assertTrue(s.contains("D")); |
178 |
> |
assertTrue(s.contains("E")); |
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} |
180 |
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|
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/** |
183 |
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*/ |
184 |
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public void testEntrySetToArray() { |
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ConcurrentHashMap map = map5(); |
186 |
< |
Set s = map.entrySet(); |
186 |
> |
Set s = map.entrySet(); |
187 |
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Object[] ar = s.toArray(); |
188 |
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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(); |
200 |
< |
Collection s = map.values(); |
201 |
< |
assertEquals(5, s.size()); |
202 |
< |
assertTrue(s.contains("A")); |
203 |
< |
assertTrue(s.contains("B")); |
204 |
< |
assertTrue(s.contains("C")); |
205 |
< |
assertTrue(s.contains("D")); |
206 |
< |
assertTrue(s.contains("E")); |
200 |
> |
Collection s = map.values(); |
201 |
> |
assertEquals(5, s.size()); |
202 |
> |
assertTrue(s.contains("A")); |
203 |
> |
assertTrue(s.contains("B")); |
204 |
> |
assertTrue(s.contains("C")); |
205 |
> |
assertTrue(s.contains("D")); |
206 |
> |
assertTrue(s.contains("E")); |
207 |
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} |
208 |
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|
209 |
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/** |
211 |
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*/ |
212 |
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public void testEntrySet() { |
213 |
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ConcurrentHashMap map = map5(); |
214 |
< |
Set s = map.entrySet(); |
215 |
< |
assertEquals(5, s.size()); |
214 |
> |
Set s = map.entrySet(); |
215 |
> |
assertEquals(5, s.size()); |
216 |
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Iterator it = s.iterator(); |
217 |
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while (it.hasNext()) { |
218 |
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Map.Entry e = (Map.Entry) it.next(); |
219 |
< |
assertTrue( |
219 |
> |
assertTrue( |
220 |
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(e.getKey().equals(one) && e.getValue().equals("A")) || |
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(e.getKey().equals(two) && e.getValue().equals("B")) || |
222 |
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(e.getKey().equals(three) && e.getValue().equals("C")) || |
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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/** |
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 |
|
|
262 |
|
*/ |
263 |
|
public void testReplace() { |
264 |
|
ConcurrentHashMap map = map5(); |
265 |
< |
assertNull(map.replace(six, "Z")); |
265 |
> |
assertNull(map.replace(six, "Z")); |
266 |
|
assertFalse(map.containsKey(six)); |
267 |
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} |
268 |
|
|
282 |
|
public void testReplaceValue() { |
283 |
|
ConcurrentHashMap map = map5(); |
284 |
|
assertEquals("A", map.get(one)); |
285 |
< |
assertFalse(map.replace(one, "Z", "Z")); |
285 |
> |
assertFalse(map.replace(one, "Z", "Z")); |
286 |
|
assertEquals("A", map.get(one)); |
287 |
|
} |
288 |
|
|
292 |
|
public void testReplaceValue2() { |
293 |
|
ConcurrentHashMap map = map5(); |
294 |
|
assertEquals("A", map.get(one)); |
295 |
< |
assertTrue(map.replace(one, "A", "Z")); |
295 |
> |
assertTrue(map.replace(one, "A", "Z")); |
296 |
|
assertEquals("Z", map.get(one)); |
297 |
|
} |
298 |
|
|
302 |
|
*/ |
303 |
|
public void testRemove() { |
304 |
|
ConcurrentHashMap map = map5(); |
305 |
< |
map.remove(five); |
306 |
< |
assertEquals(4, map.size()); |
307 |
< |
assertFalse(map.containsKey(five)); |
305 |
> |
map.remove(five); |
306 |
> |
assertEquals(4, map.size()); |
307 |
> |
assertFalse(map.containsKey(five)); |
308 |
|
} |
309 |
|
|
310 |
|
/** |
312 |
|
*/ |
313 |
|
public void testRemove2() { |
314 |
|
ConcurrentHashMap map = map5(); |
315 |
< |
map.remove(five, "E"); |
316 |
< |
assertEquals(4, map.size()); |
317 |
< |
assertFalse(map.containsKey(five)); |
318 |
< |
map.remove(four, "A"); |
319 |
< |
assertEquals(4, map.size()); |
320 |
< |
assertTrue(map.containsKey(four)); |
315 |
> |
map.remove(five, "E"); |
316 |
> |
assertEquals(4, map.size()); |
317 |
> |
assertFalse(map.containsKey(five)); |
318 |
> |
map.remove(four, "A"); |
319 |
> |
assertEquals(4, map.size()); |
320 |
> |
assertTrue(map.containsKey(four)); |
321 |
|
|
322 |
|
} |
323 |
|
|
327 |
|
public void testSize() { |
328 |
|
ConcurrentHashMap map = map5(); |
329 |
|
ConcurrentHashMap empty = new ConcurrentHashMap(); |
330 |
< |
assertEquals(0, empty.size()); |
331 |
< |
assertEquals(5, map.size()); |
330 |
> |
assertEquals(0, empty.size()); |
331 |
> |
assertEquals(5, map.size()); |
332 |
|
} |
333 |
|
|
334 |
|
/** |
340 |
|
for (int i = 1; i <= 5; ++i) { |
341 |
|
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
342 |
|
} |
343 |
< |
} |
343 |
> |
} |
344 |
|
|
345 |
|
// Exception tests |
346 |
< |
|
346 |
> |
|
347 |
|
/** |
348 |
< |
* Cannot create with negative capacity |
348 |
> |
* Cannot create with negative capacity |
349 |
|
*/ |
350 |
|
public void testConstructor1() { |
351 |
|
try { |
352 |
|
new ConcurrentHashMap(-1,0,1); |
353 |
|
shouldThrow(); |
354 |
< |
} catch(IllegalArgumentException e){} |
354 |
> |
} catch (IllegalArgumentException e) {} |
355 |
|
} |
356 |
|
|
357 |
|
/** |
361 |
|
try { |
362 |
|
new ConcurrentHashMap(1,0,-1); |
363 |
|
shouldThrow(); |
364 |
< |
} catch(IllegalArgumentException e){} |
364 |
> |
} catch (IllegalArgumentException e) {} |
365 |
|
} |
366 |
|
|
367 |
|
/** |
371 |
|
try { |
372 |
|
new ConcurrentHashMap(-1); |
373 |
|
shouldThrow(); |
374 |
< |
} catch(IllegalArgumentException e){} |
374 |
> |
} catch (IllegalArgumentException e) {} |
375 |
|
} |
376 |
|
|
377 |
|
/** |
382 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
383 |
|
c.get(null); |
384 |
|
shouldThrow(); |
385 |
< |
} catch(NullPointerException e){} |
385 |
> |
} catch (NullPointerException e) {} |
386 |
|
} |
387 |
|
|
388 |
|
/** |
393 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
394 |
|
c.containsKey(null); |
395 |
|
shouldThrow(); |
396 |
< |
} catch(NullPointerException e){} |
396 |
> |
} catch (NullPointerException e) {} |
397 |
|
} |
398 |
|
|
399 |
|
/** |
404 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
405 |
|
c.containsValue(null); |
406 |
|
shouldThrow(); |
407 |
< |
} catch(NullPointerException e){} |
407 |
> |
} catch (NullPointerException e) {} |
408 |
|
} |
409 |
|
|
410 |
|
/** |
415 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
416 |
|
c.contains(null); |
417 |
|
shouldThrow(); |
418 |
< |
} catch(NullPointerException e){} |
418 |
> |
} catch (NullPointerException e) {} |
419 |
|
} |
420 |
|
|
421 |
|
/** |
426 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
427 |
|
c.put(null, "whatever"); |
428 |
|
shouldThrow(); |
429 |
< |
} catch(NullPointerException e){} |
429 |
> |
} catch (NullPointerException e) {} |
430 |
|
} |
431 |
|
|
432 |
|
/** |
437 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
438 |
|
c.put("whatever", null); |
439 |
|
shouldThrow(); |
440 |
< |
} catch(NullPointerException e){} |
440 |
> |
} catch (NullPointerException e) {} |
441 |
|
} |
442 |
|
|
443 |
|
/** |
448 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
449 |
|
c.putIfAbsent(null, "whatever"); |
450 |
|
shouldThrow(); |
451 |
< |
} catch(NullPointerException e){} |
451 |
> |
} catch (NullPointerException e) {} |
452 |
|
} |
453 |
|
|
454 |
|
/** |
459 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
460 |
|
c.replace(null, "whatever"); |
461 |
|
shouldThrow(); |
462 |
< |
} catch(NullPointerException e){} |
462 |
> |
} catch (NullPointerException e) {} |
463 |
|
} |
464 |
|
|
465 |
|
/** |
470 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
471 |
|
c.replace(null, one, "whatever"); |
472 |
|
shouldThrow(); |
473 |
< |
} catch(NullPointerException e){} |
473 |
> |
} catch (NullPointerException e) {} |
474 |
|
} |
475 |
|
|
476 |
|
/** |
481 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
482 |
|
c.putIfAbsent("whatever", null); |
483 |
|
shouldThrow(); |
484 |
< |
} catch(NullPointerException e){} |
484 |
> |
} catch (NullPointerException e) {} |
485 |
|
} |
486 |
|
|
487 |
|
|
493 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
494 |
|
c.replace("whatever", null); |
495 |
|
shouldThrow(); |
496 |
< |
} catch(NullPointerException e){} |
496 |
> |
} catch (NullPointerException e) {} |
497 |
|
} |
498 |
|
|
499 |
|
/** |
504 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
505 |
|
c.replace("whatever", null, "A"); |
506 |
|
shouldThrow(); |
507 |
< |
} catch(NullPointerException e){} |
507 |
> |
} catch (NullPointerException e) {} |
508 |
|
} |
509 |
|
|
510 |
|
/** |
515 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
516 |
|
c.replace("whatever", one, null); |
517 |
|
shouldThrow(); |
518 |
< |
} catch(NullPointerException e){} |
518 |
> |
} catch (NullPointerException e) {} |
519 |
|
} |
520 |
|
|
521 |
|
|
528 |
|
c.put("sadsdf", "asdads"); |
529 |
|
c.remove(null); |
530 |
|
shouldThrow(); |
531 |
< |
} catch(NullPointerException e){} |
531 |
> |
} catch (NullPointerException e) {} |
532 |
|
} |
533 |
|
|
534 |
|
/** |
540 |
|
c.put("sadsdf", "asdads"); |
541 |
|
c.remove(null, "whatever"); |
542 |
|
shouldThrow(); |
543 |
< |
} catch(NullPointerException e){} |
543 |
> |
} catch (NullPointerException e) {} |
544 |
|
} |
545 |
|
|
546 |
|
/** |
551 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
552 |
|
c.put("sadsdf", "asdads"); |
553 |
|
assertFalse(c.remove("sadsdf", null)); |
554 |
< |
} catch(NullPointerException e){ |
554 |
> |
} catch (NullPointerException e) { |
555 |
|
fail(); |
556 |
|
} |
557 |
|
} |
559 |
|
/** |
560 |
|
* A deserialized map equals original |
561 |
|
*/ |
562 |
< |
public void testSerialization() { |
562 |
> |
public void testSerialization() throws Exception { |
563 |
|
ConcurrentHashMap q = map5(); |
564 |
|
|
565 |
< |
try { |
566 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
567 |
< |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
568 |
< |
out.writeObject(q); |
569 |
< |
out.close(); |
570 |
< |
|
571 |
< |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
572 |
< |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
573 |
< |
ConcurrentHashMap r = (ConcurrentHashMap)in.readObject(); |
574 |
< |
assertEquals(q.size(), r.size()); |
575 |
< |
assertTrue(q.equals(r)); |
576 |
< |
assertTrue(r.equals(q)); |
577 |
< |
} catch(Exception e){ |
578 |
< |
e.printStackTrace(); |
579 |
< |
unexpectedException(); |
580 |
< |
} |
565 |
> |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
566 |
> |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
567 |
> |
out.writeObject(q); |
568 |
> |
out.close(); |
569 |
> |
|
570 |
> |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
571 |
> |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
572 |
> |
ConcurrentHashMap r = (ConcurrentHashMap)in.readObject(); |
573 |
> |
assertEquals(q.size(), r.size()); |
574 |
> |
assertTrue(q.equals(r)); |
575 |
> |
assertTrue(r.equals(q)); |
576 |
|
} |
577 |
|
|
578 |
|
|
580 |
|
* SetValue of an EntrySet entry sets value in the map. |
581 |
|
*/ |
582 |
|
public void testSetValueWriteThrough() { |
583 |
< |
// Adapted from a bug report by Eric Zoerner |
583 |
> |
// Adapted from a bug report by Eric Zoerner |
584 |
|
ConcurrentHashMap map = new ConcurrentHashMap(2, 5.0f, 1); |
585 |
|
assertTrue(map.isEmpty()); |
586 |
|
for (int i = 0; i < 20; i++) |
587 |
|
map.put(new Integer(i), new Integer(i)); |
588 |
|
assertFalse(map.isEmpty()); |
589 |
|
Map.Entry entry1 = (Map.Entry)map.entrySet().iterator().next(); |
590 |
< |
|
590 |
> |
|
591 |
|
// assert that entry1 is not 16 |
592 |
|
assertTrue("entry is 16, test not valid", |
593 |
|
!entry1.getKey().equals(new Integer(16))); |
594 |
< |
|
595 |
< |
// remove 16 (a different key) from map |
594 |
> |
|
595 |
> |
// remove 16 (a different key) from map |
596 |
|
// which just happens to cause entry1 to be cloned in map |
597 |
|
map.remove(new Integer(16)); |
598 |
|
entry1.setValue("XYZ"); |
599 |
|
assertTrue(map.containsValue("XYZ")); // fails |
600 |
|
} |
601 |
< |
|
601 |
> |
|
602 |
|
} |