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/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
3 |
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* Expert Group and released to the public domain, as explained at |
4 |
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* http://creativecommons.org/licenses/publicdomain |
2 |
> |
* Written by Doug Lea and Martin Buchholz with assistance from |
3 |
> |
* members of JCP JSR-166 Expert Group and released to the public |
4 |
> |
* domain, as explained at |
5 |
> |
* 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. |
8 |
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*/ |
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10 |
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import junit.framework.*; |
11 |
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import java.util.*; |
12 |
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import java.util.concurrent.*; |
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import java.util.ArrayList; |
11 |
> |
import java.util.Arrays; |
12 |
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import java.util.Collection; |
13 |
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import java.util.Collections; |
14 |
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import java.util.Enumeration; |
15 |
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import java.io.*; |
15 |
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import java.util.Iterator; |
16 |
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import java.util.Map; |
17 |
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import java.util.Random; |
18 |
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import java.util.Set; |
19 |
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import java.util.concurrent.ConcurrentHashMap; |
20 |
> |
|
21 |
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import junit.framework.Test; |
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|
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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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main(suite(), args); |
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} |
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public static Test suite() { |
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return new TestSuite(ConcurrentHashMapTest.class); |
28 |
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class Implementation implements MapImplementation { |
29 |
> |
public Class<?> klazz() { return ConcurrentHashMap.class; } |
30 |
> |
public Map emptyMap() { return new ConcurrentHashMap(); } |
31 |
> |
public Object makeKey(int i) { return i; } |
32 |
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public Object makeValue(int i) { return i; } |
33 |
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public boolean isConcurrent() { return true; } |
34 |
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public boolean permitsNullKeys() { return false; } |
35 |
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public boolean permitsNullValues() { return false; } |
36 |
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public boolean supportsSetValue() { return true; } |
37 |
> |
} |
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> |
return newTestSuite( |
39 |
> |
ConcurrentHashMapTest.class, |
40 |
> |
MapTest.testSuite(new Implementation())); |
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} |
42 |
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|
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/** |
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* Create a map from Integers 1-5 to Strings "A"-"E". |
44 |
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* Returns a new map from Integers 1-5 to Strings "A"-"E". |
45 |
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*/ |
46 |
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private static ConcurrentHashMap map5() { |
47 |
< |
ConcurrentHashMap map = new ConcurrentHashMap(5); |
46 |
> |
private static ConcurrentHashMap<Integer, String> map5() { |
47 |
> |
ConcurrentHashMap<Integer, String> 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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return map; |
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} |
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|
59 |
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// classes for testing Comparable fallbacks |
60 |
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static class BI implements Comparable<BI> { |
61 |
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private final int value; |
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BI(int value) { this.value = value; } |
63 |
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public int compareTo(BI other) { |
64 |
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return Integer.compare(value, other.value); |
65 |
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} |
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public boolean equals(Object x) { |
67 |
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return (x instanceof BI) && ((BI)x).value == value; |
68 |
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} |
69 |
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public int hashCode() { return 42; } |
70 |
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} |
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static class CI extends BI { CI(int value) { super(value); } } |
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static class DI extends BI { DI(int value) { super(value); } } |
73 |
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|
74 |
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static class BS implements Comparable<BS> { |
75 |
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private final String value; |
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BS(String value) { this.value = value; } |
77 |
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public int compareTo(BS other) { |
78 |
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return value.compareTo(other.value); |
79 |
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} |
80 |
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public boolean equals(Object x) { |
81 |
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return (x instanceof BS) && value.equals(((BS)x).value); |
82 |
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} |
83 |
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public int hashCode() { return 42; } |
84 |
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} |
85 |
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|
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static class LexicographicList<E extends Comparable<E>> extends ArrayList<E> |
87 |
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implements Comparable<LexicographicList<E>> { |
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LexicographicList(Collection<E> c) { super(c); } |
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LexicographicList(E e) { super(Collections.singleton(e)); } |
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public int compareTo(LexicographicList<E> other) { |
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int common = Math.min(size(), other.size()); |
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int r = 0; |
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for (int i = 0; i < common; i++) { |
94 |
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if ((r = get(i).compareTo(other.get(i))) != 0) |
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break; |
96 |
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} |
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if (r == 0) |
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r = Integer.compare(size(), other.size()); |
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return r; |
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} |
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private static final long serialVersionUID = 0; |
102 |
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} |
103 |
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|
104 |
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static class CollidingObject { |
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final String value; |
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CollidingObject(final String value) { this.value = value; } |
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public int hashCode() { return this.value.hashCode() & 1; } |
108 |
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public boolean equals(final Object obj) { |
109 |
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return (obj instanceof CollidingObject) && ((CollidingObject)obj).value.equals(value); |
110 |
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} |
111 |
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} |
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|
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static class ComparableCollidingObject extends CollidingObject implements Comparable<ComparableCollidingObject> { |
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ComparableCollidingObject(final String value) { super(value); } |
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public int compareTo(final ComparableCollidingObject o) { |
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return value.compareTo(o.value); |
117 |
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} |
118 |
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} |
119 |
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|
120 |
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/** |
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* Inserted elements that are subclasses of the same Comparable |
122 |
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* class are found. |
123 |
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*/ |
124 |
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public void testComparableFamily() { |
125 |
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int size = 500; // makes measured test run time -> 60ms |
126 |
+ |
ConcurrentHashMap<BI, Boolean> m = new ConcurrentHashMap<>(); |
127 |
+ |
for (int i = 0; i < size; i++) { |
128 |
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assertNull(m.put(new CI(i), true)); |
129 |
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} |
130 |
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for (int i = 0; i < size; i++) { |
131 |
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assertTrue(m.containsKey(new CI(i))); |
132 |
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assertTrue(m.containsKey(new DI(i))); |
133 |
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} |
134 |
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} |
135 |
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|
136 |
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/** |
137 |
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* Elements of classes with erased generic type parameters based |
138 |
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* on Comparable can be inserted and found. |
139 |
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*/ |
140 |
+ |
public void testGenericComparable() { |
141 |
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int size = 120; // makes measured test run time -> 60ms |
142 |
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ConcurrentHashMap<Object, Boolean> m = new ConcurrentHashMap<>(); |
143 |
+ |
for (int i = 0; i < size; i++) { |
144 |
+ |
BI bi = new BI(i); |
145 |
+ |
BS bs = new BS(String.valueOf(i)); |
146 |
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LexicographicList<BI> bis = new LexicographicList<>(bi); |
147 |
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LexicographicList<BS> bss = new LexicographicList<>(bs); |
148 |
+ |
assertNull(m.putIfAbsent(bis, true)); |
149 |
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assertTrue(m.containsKey(bis)); |
150 |
+ |
if (m.putIfAbsent(bss, true) == null) |
151 |
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assertTrue(m.containsKey(bss)); |
152 |
+ |
assertTrue(m.containsKey(bis)); |
153 |
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} |
154 |
+ |
for (int i = 0; i < size; i++) { |
155 |
+ |
assertTrue(m.containsKey(Collections.singletonList(new BI(i)))); |
156 |
+ |
} |
157 |
+ |
} |
158 |
+ |
|
159 |
+ |
/** |
160 |
+ |
* Elements of non-comparable classes equal to those of classes |
161 |
+ |
* with erased generic type parameters based on Comparable can be |
162 |
+ |
* inserted and found. |
163 |
+ |
*/ |
164 |
+ |
public void testGenericComparable2() { |
165 |
+ |
int size = 500; // makes measured test run time -> 60ms |
166 |
+ |
ConcurrentHashMap<Object, Boolean> m = new ConcurrentHashMap<>(); |
167 |
+ |
for (int i = 0; i < size; i++) { |
168 |
+ |
m.put(Collections.singletonList(new BI(i)), true); |
169 |
+ |
} |
170 |
+ |
|
171 |
+ |
for (int i = 0; i < size; i++) { |
172 |
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LexicographicList<BI> bis = new LexicographicList<>(new BI(i)); |
173 |
+ |
assertTrue(m.containsKey(bis)); |
174 |
+ |
} |
175 |
+ |
} |
176 |
+ |
|
177 |
+ |
/** |
178 |
+ |
* Mixtures of instances of comparable and non-comparable classes |
179 |
+ |
* can be inserted and found. |
180 |
+ |
*/ |
181 |
+ |
public void testMixedComparable() { |
182 |
+ |
int size = 1200; // makes measured test run time -> 35ms |
183 |
+ |
ConcurrentHashMap<Object, Object> map = new ConcurrentHashMap<>(); |
184 |
+ |
Random rng = new Random(); |
185 |
+ |
for (int i = 0; i < size; i++) { |
186 |
+ |
Object x; |
187 |
+ |
switch (rng.nextInt(4)) { |
188 |
+ |
case 0: |
189 |
+ |
x = new Object(); |
190 |
+ |
break; |
191 |
+ |
case 1: |
192 |
+ |
x = new CollidingObject(Integer.toString(i)); |
193 |
+ |
break; |
194 |
+ |
default: |
195 |
+ |
x = new ComparableCollidingObject(Integer.toString(i)); |
196 |
+ |
} |
197 |
+ |
assertNull(map.put(x, x)); |
198 |
+ |
} |
199 |
+ |
int count = 0; |
200 |
+ |
for (Object k : map.keySet()) { |
201 |
+ |
assertEquals(map.get(k), k); |
202 |
+ |
++count; |
203 |
+ |
} |
204 |
+ |
assertEquals(count, size); |
205 |
+ |
assertEquals(map.size(), size); |
206 |
+ |
for (Object k : map.keySet()) { |
207 |
+ |
assertEquals(map.put(k, k), k); |
208 |
+ |
} |
209 |
+ |
} |
210 |
+ |
|
211 |
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/** |
212 |
< |
* clear removes all pairs |
212 |
> |
* clear removes all pairs |
213 |
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*/ |
214 |
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public void testClear() { |
215 |
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ConcurrentHashMap map = map5(); |
216 |
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map.clear(); |
217 |
< |
assertEquals(map.size(), 0); |
217 |
> |
assertEquals(0, map.size()); |
218 |
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} |
219 |
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|
220 |
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/** |
221 |
< |
* Maps with same contents are equal |
221 |
> |
* Maps with same contents are equal |
222 |
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*/ |
223 |
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public void testEquals() { |
224 |
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ConcurrentHashMap map1 = map5(); |
231 |
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} |
232 |
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|
233 |
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/** |
234 |
< |
* contains returns true for contained value |
234 |
> |
* hashCode() equals sum of each key.hashCode ^ value.hashCode |
235 |
> |
*/ |
236 |
> |
public void testHashCode() { |
237 |
> |
ConcurrentHashMap<Integer,String> map = map5(); |
238 |
> |
int sum = 0; |
239 |
> |
for (Map.Entry<Integer,String> e : map.entrySet()) |
240 |
> |
sum += e.getKey().hashCode() ^ e.getValue().hashCode(); |
241 |
> |
assertEquals(sum, map.hashCode()); |
242 |
> |
} |
243 |
> |
|
244 |
> |
/** |
245 |
> |
* contains returns true for contained value |
246 |
|
*/ |
247 |
|
public void testContains() { |
248 |
|
ConcurrentHashMap map = map5(); |
251 |
|
} |
252 |
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|
253 |
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/** |
254 |
< |
* containsKey returns true for contained key |
254 |
> |
* containsKey returns true for contained key |
255 |
|
*/ |
256 |
|
public void testContainsKey() { |
257 |
|
ConcurrentHashMap map = map5(); |
260 |
|
} |
261 |
|
|
262 |
|
/** |
263 |
< |
* containsValue returns true for held values |
263 |
> |
* containsValue returns true for held values |
264 |
|
*/ |
265 |
|
public void testContainsValue() { |
266 |
|
ConcurrentHashMap map = map5(); |
269 |
|
} |
270 |
|
|
271 |
|
/** |
272 |
< |
* enumeration returns an enumeration containing the correct |
273 |
< |
* elements |
272 |
> |
* enumeration returns an enumeration containing the correct |
273 |
> |
* elements |
274 |
|
*/ |
275 |
|
public void testEnumeration() { |
276 |
|
ConcurrentHashMap map = map5(); |
284 |
|
} |
285 |
|
|
286 |
|
/** |
287 |
< |
* get returns the correct element at the given key, |
288 |
< |
* or null if not present |
287 |
> |
* get returns the correct element at the given key, |
288 |
> |
* or null if not present |
289 |
|
*/ |
290 |
|
public void testGet() { |
291 |
|
ConcurrentHashMap map = map5(); |
292 |
|
assertEquals("A", (String)map.get(one)); |
293 |
|
ConcurrentHashMap empty = new ConcurrentHashMap(); |
294 |
|
assertNull(map.get("anything")); |
295 |
+ |
assertNull(empty.get("anything")); |
296 |
|
} |
297 |
|
|
298 |
|
/** |
299 |
< |
* isEmpty is true of empty map and false for non-empty |
299 |
> |
* isEmpty is true of empty map and false for non-empty |
300 |
|
*/ |
301 |
|
public void testIsEmpty() { |
302 |
|
ConcurrentHashMap empty = new ConcurrentHashMap(); |
306 |
|
} |
307 |
|
|
308 |
|
/** |
309 |
< |
* keys returns an enumeration containing all the keys from the map |
309 |
> |
* keys returns an enumeration containing all the keys from the map |
310 |
|
*/ |
311 |
|
public void testKeys() { |
312 |
|
ConcurrentHashMap map = map5(); |
320 |
|
} |
321 |
|
|
322 |
|
/** |
323 |
< |
* keySet returns a Set containing all the keys |
323 |
> |
* keySet returns a Set containing all the keys |
324 |
|
*/ |
325 |
|
public void testKeySet() { |
326 |
|
ConcurrentHashMap map = map5(); |
334 |
|
} |
335 |
|
|
336 |
|
/** |
337 |
< |
* keySet.toArray returns contains all keys |
337 |
> |
* Test keySet().removeAll on empty map |
338 |
> |
*/ |
339 |
> |
public void testKeySet_empty_removeAll() { |
340 |
> |
ConcurrentHashMap<Integer, String> map = new ConcurrentHashMap<>(); |
341 |
> |
Set<Integer> set = map.keySet(); |
342 |
> |
set.removeAll(Collections.emptyList()); |
343 |
> |
assertTrue(map.isEmpty()); |
344 |
> |
assertTrue(set.isEmpty()); |
345 |
> |
// following is test for JDK-8163353 |
346 |
> |
set.removeAll(Collections.emptySet()); |
347 |
> |
assertTrue(map.isEmpty()); |
348 |
> |
assertTrue(set.isEmpty()); |
349 |
> |
} |
350 |
> |
|
351 |
> |
/** |
352 |
> |
* keySet.toArray returns contains all keys |
353 |
|
*/ |
354 |
|
public void testKeySetToArray() { |
355 |
|
ConcurrentHashMap map = map5(); |
362 |
|
} |
363 |
|
|
364 |
|
/** |
365 |
< |
* Values.toArray contains all values |
365 |
> |
* Values.toArray contains all values |
366 |
|
*/ |
367 |
|
public void testValuesToArray() { |
368 |
|
ConcurrentHashMap map = map5(); |
378 |
|
} |
379 |
|
|
380 |
|
/** |
381 |
< |
* entrySet.toArray contains all entries |
381 |
> |
* entrySet.toArray contains all entries |
382 |
|
*/ |
383 |
|
public void testEntrySetToArray() { |
384 |
|
ConcurrentHashMap map = map5(); |
425 |
|
} |
426 |
|
|
427 |
|
/** |
428 |
< |
* putAll adds all key-value pairs from the given map |
428 |
> |
* putAll adds all key-value pairs from the given map |
429 |
|
*/ |
430 |
|
public void testPutAll() { |
431 |
|
ConcurrentHashMap empty = new ConcurrentHashMap(); |
440 |
|
} |
441 |
|
|
442 |
|
/** |
443 |
< |
* putIfAbsent works when the given key is not present |
443 |
> |
* putIfAbsent works when the given key is not present |
444 |
|
*/ |
445 |
|
public void testPutIfAbsent() { |
446 |
|
ConcurrentHashMap map = map5(); |
449 |
|
} |
450 |
|
|
451 |
|
/** |
452 |
< |
* putIfAbsent does not add the pair if the key is already present |
452 |
> |
* putIfAbsent does not add the pair if the key is already present |
453 |
|
*/ |
454 |
|
public void testPutIfAbsent2() { |
455 |
|
ConcurrentHashMap map = map5(); |
457 |
|
} |
458 |
|
|
459 |
|
/** |
460 |
< |
* replace fails when the given key is not present |
460 |
> |
* replace fails when the given key is not present |
461 |
|
*/ |
462 |
|
public void testReplace() { |
463 |
|
ConcurrentHashMap map = map5(); |
466 |
|
} |
467 |
|
|
468 |
|
/** |
469 |
< |
* replace succeeds if the key is already present |
469 |
> |
* replace succeeds if the key is already present |
470 |
|
*/ |
471 |
|
public void testReplace2() { |
472 |
|
ConcurrentHashMap map = map5(); |
474 |
|
assertEquals("Z", map.get(one)); |
475 |
|
} |
476 |
|
|
278 |
– |
|
477 |
|
/** |
478 |
|
* replace value fails when the given key not mapped to expected value |
479 |
|
*/ |
494 |
|
assertEquals("Z", map.get(one)); |
495 |
|
} |
496 |
|
|
299 |
– |
|
497 |
|
/** |
498 |
< |
* remove removes the correct key-value pair from the map |
498 |
> |
* remove removes the correct key-value pair from the map |
499 |
|
*/ |
500 |
|
public void testRemove() { |
501 |
|
ConcurrentHashMap map = map5(); |
515 |
|
map.remove(four, "A"); |
516 |
|
assertEquals(4, map.size()); |
517 |
|
assertTrue(map.containsKey(four)); |
321 |
– |
|
518 |
|
} |
519 |
|
|
520 |
|
/** |
521 |
< |
* size returns the correct values |
521 |
> |
* size returns the correct values |
522 |
|
*/ |
523 |
|
public void testSize() { |
524 |
|
ConcurrentHashMap map = map5(); |
534 |
|
ConcurrentHashMap map = map5(); |
535 |
|
String s = map.toString(); |
536 |
|
for (int i = 1; i <= 5; ++i) { |
537 |
< |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
537 |
> |
assertTrue(s.contains(String.valueOf(i))); |
538 |
|
} |
539 |
|
} |
540 |
|
|
541 |
|
// Exception tests |
542 |
|
|
543 |
|
/** |
544 |
< |
* Cannot create with negative capacity |
544 |
> |
* Cannot create with only negative capacity |
545 |
|
*/ |
546 |
|
public void testConstructor1() { |
547 |
|
try { |
548 |
< |
new ConcurrentHashMap(-1,0,1); |
548 |
> |
new ConcurrentHashMap(-1); |
549 |
|
shouldThrow(); |
550 |
|
} catch (IllegalArgumentException success) {} |
551 |
|
} |
552 |
|
|
553 |
|
/** |
554 |
< |
* Cannot create with negative concurrency level |
554 |
> |
* Constructor (initialCapacity, loadFactor) throws |
555 |
> |
* IllegalArgumentException if either argument is negative |
556 |
|
*/ |
557 |
|
public void testConstructor2() { |
558 |
|
try { |
559 |
< |
new ConcurrentHashMap(1,0,-1); |
559 |
> |
new ConcurrentHashMap(-1, .75f); |
560 |
> |
shouldThrow(); |
561 |
> |
} catch (IllegalArgumentException success) {} |
562 |
> |
|
563 |
> |
try { |
564 |
> |
new ConcurrentHashMap(16, -1); |
565 |
|
shouldThrow(); |
566 |
|
} catch (IllegalArgumentException success) {} |
567 |
|
} |
568 |
|
|
569 |
|
/** |
570 |
< |
* Cannot create with only negative capacity |
570 |
> |
* Constructor (initialCapacity, loadFactor, concurrencyLevel) |
571 |
> |
* throws IllegalArgumentException if any argument is negative |
572 |
|
*/ |
573 |
|
public void testConstructor3() { |
574 |
|
try { |
575 |
< |
new ConcurrentHashMap(-1); |
575 |
> |
new ConcurrentHashMap(-1, .75f, 1); |
576 |
> |
shouldThrow(); |
577 |
> |
} catch (IllegalArgumentException success) {} |
578 |
> |
|
579 |
> |
try { |
580 |
> |
new ConcurrentHashMap(16, -1, 1); |
581 |
|
shouldThrow(); |
582 |
|
} catch (IllegalArgumentException success) {} |
583 |
+ |
|
584 |
+ |
try { |
585 |
+ |
new ConcurrentHashMap(16, .75f, -1); |
586 |
+ |
shouldThrow(); |
587 |
+ |
} catch (IllegalArgumentException success) {} |
588 |
+ |
} |
589 |
+ |
|
590 |
+ |
/** |
591 |
+ |
* ConcurrentHashMap(map) throws NullPointerException if the given |
592 |
+ |
* map is null |
593 |
+ |
*/ |
594 |
+ |
public void testConstructor4() { |
595 |
+ |
try { |
596 |
+ |
new ConcurrentHashMap(null); |
597 |
+ |
shouldThrow(); |
598 |
+ |
} catch (NullPointerException success) {} |
599 |
+ |
} |
600 |
+ |
|
601 |
+ |
/** |
602 |
+ |
* ConcurrentHashMap(map) creates a new map with the same mappings |
603 |
+ |
* as the given map |
604 |
+ |
*/ |
605 |
+ |
public void testConstructor5() { |
606 |
+ |
ConcurrentHashMap map1 = map5(); |
607 |
+ |
ConcurrentHashMap map2 = new ConcurrentHashMap(map5()); |
608 |
+ |
assertTrue(map2.equals(map1)); |
609 |
+ |
map2.put(one, "F"); |
610 |
+ |
assertFalse(map2.equals(map1)); |
611 |
|
} |
612 |
|
|
613 |
|
/** |
614 |
|
* get(null) throws NPE |
615 |
|
*/ |
616 |
|
public void testGet_NullPointerException() { |
617 |
+ |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
618 |
|
try { |
382 |
– |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
619 |
|
c.get(null); |
620 |
|
shouldThrow(); |
621 |
|
} catch (NullPointerException success) {} |
625 |
|
* containsKey(null) throws NPE |
626 |
|
*/ |
627 |
|
public void testContainsKey_NullPointerException() { |
628 |
+ |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
629 |
|
try { |
393 |
– |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
630 |
|
c.containsKey(null); |
631 |
|
shouldThrow(); |
632 |
|
} catch (NullPointerException success) {} |
636 |
|
* containsValue(null) throws NPE |
637 |
|
*/ |
638 |
|
public void testContainsValue_NullPointerException() { |
639 |
+ |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
640 |
|
try { |
404 |
– |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
641 |
|
c.containsValue(null); |
642 |
|
shouldThrow(); |
643 |
|
} catch (NullPointerException success) {} |
647 |
|
* contains(null) throws NPE |
648 |
|
*/ |
649 |
|
public void testContains_NullPointerException() { |
650 |
+ |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
651 |
|
try { |
415 |
– |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
652 |
|
c.contains(null); |
653 |
|
shouldThrow(); |
654 |
|
} catch (NullPointerException success) {} |
658 |
|
* put(null,x) throws NPE |
659 |
|
*/ |
660 |
|
public void testPut1_NullPointerException() { |
661 |
+ |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
662 |
|
try { |
426 |
– |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
663 |
|
c.put(null, "whatever"); |
664 |
|
shouldThrow(); |
665 |
|
} catch (NullPointerException success) {} |
669 |
|
* put(x, null) throws NPE |
670 |
|
*/ |
671 |
|
public void testPut2_NullPointerException() { |
672 |
+ |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
673 |
|
try { |
437 |
– |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
674 |
|
c.put("whatever", null); |
675 |
|
shouldThrow(); |
676 |
|
} catch (NullPointerException success) {} |
680 |
|
* putIfAbsent(null, x) throws NPE |
681 |
|
*/ |
682 |
|
public void testPutIfAbsent1_NullPointerException() { |
683 |
+ |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
684 |
|
try { |
448 |
– |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
685 |
|
c.putIfAbsent(null, "whatever"); |
686 |
|
shouldThrow(); |
687 |
|
} catch (NullPointerException success) {} |
691 |
|
* replace(null, x) throws NPE |
692 |
|
*/ |
693 |
|
public void testReplace_NullPointerException() { |
694 |
+ |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
695 |
|
try { |
459 |
– |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
696 |
|
c.replace(null, "whatever"); |
697 |
|
shouldThrow(); |
698 |
|
} catch (NullPointerException success) {} |
702 |
|
* replace(null, x, y) throws NPE |
703 |
|
*/ |
704 |
|
public void testReplaceValue_NullPointerException() { |
705 |
+ |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
706 |
|
try { |
470 |
– |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
707 |
|
c.replace(null, one, "whatever"); |
708 |
|
shouldThrow(); |
709 |
|
} catch (NullPointerException success) {} |
713 |
|
* putIfAbsent(x, null) throws NPE |
714 |
|
*/ |
715 |
|
public void testPutIfAbsent2_NullPointerException() { |
716 |
+ |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
717 |
|
try { |
481 |
– |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
718 |
|
c.putIfAbsent("whatever", null); |
719 |
|
shouldThrow(); |
720 |
|
} catch (NullPointerException success) {} |
721 |
|
} |
722 |
|
|
487 |
– |
|
723 |
|
/** |
724 |
|
* replace(x, null) throws NPE |
725 |
|
*/ |
726 |
|
public void testReplace2_NullPointerException() { |
727 |
+ |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
728 |
|
try { |
493 |
– |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
729 |
|
c.replace("whatever", null); |
730 |
|
shouldThrow(); |
731 |
|
} catch (NullPointerException success) {} |
735 |
|
* replace(x, null, y) throws NPE |
736 |
|
*/ |
737 |
|
public void testReplaceValue2_NullPointerException() { |
738 |
+ |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
739 |
|
try { |
504 |
– |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
740 |
|
c.replace("whatever", null, "A"); |
741 |
|
shouldThrow(); |
742 |
|
} catch (NullPointerException success) {} |
746 |
|
* replace(x, y, null) throws NPE |
747 |
|
*/ |
748 |
|
public void testReplaceValue3_NullPointerException() { |
749 |
+ |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
750 |
|
try { |
515 |
– |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
751 |
|
c.replace("whatever", one, null); |
752 |
|
shouldThrow(); |
753 |
|
} catch (NullPointerException success) {} |
754 |
|
} |
755 |
|
|
521 |
– |
|
756 |
|
/** |
757 |
|
* remove(null) throws NPE |
758 |
|
*/ |
759 |
|
public void testRemove1_NullPointerException() { |
760 |
+ |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
761 |
+ |
c.put("sadsdf", "asdads"); |
762 |
|
try { |
527 |
– |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
528 |
– |
c.put("sadsdf", "asdads"); |
763 |
|
c.remove(null); |
764 |
|
shouldThrow(); |
765 |
|
} catch (NullPointerException success) {} |
769 |
|
* remove(null, x) throws NPE |
770 |
|
*/ |
771 |
|
public void testRemove2_NullPointerException() { |
772 |
+ |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
773 |
+ |
c.put("sadsdf", "asdads"); |
774 |
|
try { |
539 |
– |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
540 |
– |
c.put("sadsdf", "asdads"); |
775 |
|
c.remove(null, "whatever"); |
776 |
|
shouldThrow(); |
777 |
|
} catch (NullPointerException success) {} |
787 |
|
} |
788 |
|
|
789 |
|
/** |
790 |
< |
* A deserialized map equals original |
790 |
> |
* A deserialized/reserialized map equals original |
791 |
|
*/ |
792 |
|
public void testSerialization() throws Exception { |
793 |
< |
ConcurrentHashMap q = map5(); |
793 |
> |
Map x = map5(); |
794 |
> |
Map y = serialClone(x); |
795 |
|
|
796 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
797 |
< |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
798 |
< |
out.writeObject(q); |
799 |
< |
out.close(); |
565 |
< |
|
566 |
< |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
567 |
< |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
568 |
< |
ConcurrentHashMap r = (ConcurrentHashMap)in.readObject(); |
569 |
< |
assertEquals(q.size(), r.size()); |
570 |
< |
assertTrue(q.equals(r)); |
571 |
< |
assertTrue(r.equals(q)); |
796 |
> |
assertNotSame(x, y); |
797 |
> |
assertEquals(x.size(), y.size()); |
798 |
> |
assertEquals(x, y); |
799 |
> |
assertEquals(y, x); |
800 |
|
} |
801 |
|
|
574 |
– |
|
802 |
|
/** |
803 |
|
* SetValue of an EntrySet entry sets value in the map. |
804 |
|
*/ |
810 |
|
map.put(new Integer(i), new Integer(i)); |
811 |
|
assertFalse(map.isEmpty()); |
812 |
|
Map.Entry entry1 = (Map.Entry)map.entrySet().iterator().next(); |
813 |
+ |
// Unless it happens to be first (in which case remainder of |
814 |
+ |
// test is skipped), remove a possibly-colliding key from map |
815 |
+ |
// which, under some implementations, may cause entry1 to be |
816 |
+ |
// cloned in map |
817 |
+ |
if (!entry1.getKey().equals(new Integer(16))) { |
818 |
+ |
map.remove(new Integer(16)); |
819 |
+ |
entry1.setValue("XYZ"); |
820 |
+ |
assertTrue(map.containsValue("XYZ")); // fails if write-through broken |
821 |
+ |
} |
822 |
+ |
} |
823 |
|
|
824 |
< |
// assert that entry1 is not 16 |
825 |
< |
assertTrue("entry is 16, test not valid", |
826 |
< |
!entry1.getKey().equals(new Integer(16))); |
827 |
< |
|
828 |
< |
// remove 16 (a different key) from map |
829 |
< |
// which just happens to cause entry1 to be cloned in map |
830 |
< |
map.remove(new Integer(16)); |
831 |
< |
entry1.setValue("XYZ"); |
832 |
< |
assertTrue(map.containsValue("XYZ")); // fails |
824 |
> |
/** |
825 |
> |
* Tests performance of removeAll when the other collection is much smaller. |
826 |
> |
* ant -Djsr166.tckTestClass=ConcurrentHashMapTest -Djsr166.methodFilter=testRemoveAll_performance -Djsr166.expensiveTests=true tck |
827 |
> |
*/ |
828 |
> |
public void testRemoveAll_performance() { |
829 |
> |
final int mapSize = expensiveTests ? 1_000_000 : 100; |
830 |
> |
final int iterations = expensiveTests ? 500 : 2; |
831 |
> |
final ConcurrentHashMap<Integer, Integer> map = new ConcurrentHashMap<>(); |
832 |
> |
for (int i = 0; i < mapSize; i++) |
833 |
> |
map.put(i, i); |
834 |
> |
Set<Integer> keySet = map.keySet(); |
835 |
> |
Collection<Integer> removeMe = Arrays.asList(new Integer[] { -99, -86 }); |
836 |
> |
for (int i = 0; i < iterations; i++) |
837 |
> |
assertFalse(keySet.removeAll(removeMe)); |
838 |
> |
assertEquals(mapSize, map.size()); |
839 |
> |
} |
840 |
> |
|
841 |
> |
public void testReentrantComputeIfAbsent() { |
842 |
> |
ConcurrentHashMap<Integer, Integer> map = new ConcurrentHashMap<>(16); |
843 |
> |
try { |
844 |
> |
for (int i = 0; i < 100; i++) { // force a resize |
845 |
> |
map.computeIfAbsent(i, key -> findValue(map, key)); |
846 |
> |
} |
847 |
> |
fail("recursive computeIfAbsent should throw IllegalStateException"); |
848 |
> |
} catch (IllegalStateException success) {} |
849 |
> |
} |
850 |
> |
|
851 |
> |
private Integer findValue(ConcurrentHashMap<Integer, Integer> map, |
852 |
> |
Integer key) { |
853 |
> |
return (key % 5 == 0) ? key : |
854 |
> |
map.computeIfAbsent(key + 1, k -> findValue(map, k)); |
855 |
|
} |
856 |
|
|
857 |
|
} |