1 |
dl |
1.1 |
/* |
2 |
dl |
1.9 |
* 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 |
jsr166 |
1.23 |
* http://creativecommons.org/publicdomain/zero/1.0/ |
5 |
jsr166 |
1.14 |
* Other contributors include Andrew Wright, Jeffrey Hayes, |
6 |
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* Pat Fisher, Mike Judd. |
7 |
dl |
1.1 |
*/ |
8 |
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9 |
jsr166 |
1.40 |
import java.util.ArrayList; |
10 |
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import java.util.Arrays; |
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import java.util.Collection; |
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import java.util.Collections; |
13 |
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import java.util.Enumeration; |
14 |
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import java.util.Iterator; |
15 |
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import java.util.Map; |
16 |
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import java.util.Random; |
17 |
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import java.util.Set; |
18 |
jsr166 |
1.25 |
import java.util.concurrent.ConcurrentHashMap; |
19 |
dl |
1.1 |
|
20 |
jsr166 |
1.40 |
import junit.framework.Test; |
21 |
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import junit.framework.TestSuite; |
22 |
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jsr166 |
1.16 |
public class ConcurrentHashMapTest extends JSR166TestCase { |
24 |
dl |
1.1 |
public static void main(String[] args) { |
25 |
jsr166 |
1.21 |
junit.textui.TestRunner.run(suite()); |
26 |
dl |
1.1 |
} |
27 |
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public static Test suite() { |
28 |
jsr166 |
1.17 |
return new TestSuite(ConcurrentHashMapTest.class); |
29 |
dl |
1.1 |
} |
30 |
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31 |
dl |
1.5 |
/** |
32 |
jsr166 |
1.28 |
* Returns a new map from Integers 1-5 to Strings "A"-"E". |
33 |
dl |
1.5 |
*/ |
34 |
dl |
1.36 |
private static ConcurrentHashMap<Integer, String> map5() { |
35 |
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ConcurrentHashMap map = new ConcurrentHashMap<Integer, String>(5); |
36 |
dl |
1.1 |
assertTrue(map.isEmpty()); |
37 |
jsr166 |
1.17 |
map.put(one, "A"); |
38 |
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map.put(two, "B"); |
39 |
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map.put(three, "C"); |
40 |
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map.put(four, "D"); |
41 |
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map.put(five, "E"); |
42 |
dl |
1.1 |
assertFalse(map.isEmpty()); |
43 |
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assertEquals(5, map.size()); |
44 |
jsr166 |
1.17 |
return map; |
45 |
dl |
1.1 |
} |
46 |
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|
47 |
jsr166 |
1.33 |
/** Re-implement Integer.compare for old java versions */ |
48 |
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static int compare(int x, int y) { return x < y ? -1 : x > y ? 1 : 0; } |
49 |
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|
50 |
jsr166 |
1.30 |
// classes for testing Comparable fallbacks |
51 |
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static class BI implements Comparable<BI> { |
52 |
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private final int value; |
53 |
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BI(int value) { this.value = value; } |
54 |
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public int compareTo(BI other) { |
55 |
jsr166 |
1.33 |
return compare(value, other.value); |
56 |
jsr166 |
1.30 |
} |
57 |
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public boolean equals(Object x) { |
58 |
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return (x instanceof BI) && ((BI)x).value == value; |
59 |
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} |
60 |
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public int hashCode() { return 42; } |
61 |
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} |
62 |
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static class CI extends BI { CI(int value) { super(value); } } |
63 |
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static class DI extends BI { DI(int value) { super(value); } } |
64 |
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65 |
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static class BS implements Comparable<BS> { |
66 |
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private final String value; |
67 |
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BS(String value) { this.value = value; } |
68 |
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public int compareTo(BS other) { |
69 |
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return value.compareTo(other.value); |
70 |
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} |
71 |
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public boolean equals(Object x) { |
72 |
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return (x instanceof BS) && value.equals(((BS)x).value); |
73 |
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} |
74 |
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public int hashCode() { return 42; } |
75 |
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} |
76 |
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77 |
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static class LexicographicList<E extends Comparable<E>> extends ArrayList<E> |
78 |
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implements Comparable<LexicographicList<E>> { |
79 |
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LexicographicList(Collection<E> c) { super(c); } |
80 |
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LexicographicList(E e) { super(Collections.singleton(e)); } |
81 |
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public int compareTo(LexicographicList<E> other) { |
82 |
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int common = Math.min(size(), other.size()); |
83 |
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int r = 0; |
84 |
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for (int i = 0; i < common; i++) { |
85 |
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if ((r = get(i).compareTo(other.get(i))) != 0) |
86 |
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break; |
87 |
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} |
88 |
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if (r == 0) |
89 |
jsr166 |
1.33 |
r = compare(size(), other.size()); |
90 |
jsr166 |
1.30 |
return r; |
91 |
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} |
92 |
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private static final long serialVersionUID = 0; |
93 |
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} |
94 |
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95 |
dl |
1.34 |
static class CollidingObject { |
96 |
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final String value; |
97 |
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CollidingObject(final String value) { this.value = value; } |
98 |
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public int hashCode() { return this.value.hashCode() & 1; } |
99 |
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public boolean equals(final Object obj) { |
100 |
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return (obj instanceof CollidingObject) && ((CollidingObject)obj).value.equals(value); |
101 |
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} |
102 |
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} |
103 |
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104 |
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static class ComparableCollidingObject extends CollidingObject implements Comparable<ComparableCollidingObject> { |
105 |
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ComparableCollidingObject(final String value) { super(value); } |
106 |
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public int compareTo(final ComparableCollidingObject o) { |
107 |
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return value.compareTo(o.value); |
108 |
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} |
109 |
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} |
110 |
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111 |
jsr166 |
1.30 |
/** |
112 |
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* Inserted elements that are subclasses of the same Comparable |
113 |
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* class are found. |
114 |
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*/ |
115 |
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public void testComparableFamily() { |
116 |
jsr166 |
1.39 |
int size = 500; // makes measured test run time -> 60ms |
117 |
jsr166 |
1.32 |
ConcurrentHashMap<BI, Boolean> m = |
118 |
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new ConcurrentHashMap<BI, Boolean>(); |
119 |
jsr166 |
1.39 |
for (int i = 0; i < size; i++) { |
120 |
jsr166 |
1.30 |
assertTrue(m.put(new CI(i), true) == null); |
121 |
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} |
122 |
jsr166 |
1.39 |
for (int i = 0; i < size; i++) { |
123 |
jsr166 |
1.30 |
assertTrue(m.containsKey(new CI(i))); |
124 |
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assertTrue(m.containsKey(new DI(i))); |
125 |
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} |
126 |
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} |
127 |
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128 |
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/** |
129 |
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* Elements of classes with erased generic type parameters based |
130 |
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* on Comparable can be inserted and found. |
131 |
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*/ |
132 |
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public void testGenericComparable() { |
133 |
jsr166 |
1.39 |
int size = 120; // makes measured test run time -> 60ms |
134 |
jsr166 |
1.32 |
ConcurrentHashMap<Object, Boolean> m = |
135 |
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new ConcurrentHashMap<Object, Boolean>(); |
136 |
jsr166 |
1.39 |
for (int i = 0; i < size; i++) { |
137 |
jsr166 |
1.30 |
BI bi = new BI(i); |
138 |
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BS bs = new BS(String.valueOf(i)); |
139 |
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LexicographicList<BI> bis = new LexicographicList<BI>(bi); |
140 |
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LexicographicList<BS> bss = new LexicographicList<BS>(bs); |
141 |
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assertTrue(m.putIfAbsent(bis, true) == null); |
142 |
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assertTrue(m.containsKey(bis)); |
143 |
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if (m.putIfAbsent(bss, true) == null) |
144 |
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assertTrue(m.containsKey(bss)); |
145 |
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assertTrue(m.containsKey(bis)); |
146 |
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} |
147 |
jsr166 |
1.39 |
for (int i = 0; i < size; i++) { |
148 |
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assertTrue(m.containsKey(Collections.singletonList(new BI(i)))); |
149 |
jsr166 |
1.30 |
} |
150 |
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} |
151 |
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152 |
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/** |
153 |
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* Elements of non-comparable classes equal to those of classes |
154 |
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* with erased generic type parameters based on Comparable can be |
155 |
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* inserted and found. |
156 |
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*/ |
157 |
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public void testGenericComparable2() { |
158 |
jsr166 |
1.39 |
int size = 500; // makes measured test run time -> 60ms |
159 |
jsr166 |
1.32 |
ConcurrentHashMap<Object, Boolean> m = |
160 |
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new ConcurrentHashMap<Object, Boolean>(); |
161 |
jsr166 |
1.39 |
for (int i = 0; i < size; i++) { |
162 |
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m.put(Collections.singletonList(new BI(i)), true); |
163 |
jsr166 |
1.30 |
} |
164 |
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165 |
jsr166 |
1.39 |
for (int i = 0; i < size; i++) { |
166 |
jsr166 |
1.30 |
LexicographicList<BI> bis = new LexicographicList<BI>(new BI(i)); |
167 |
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assertTrue(m.containsKey(bis)); |
168 |
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} |
169 |
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} |
170 |
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171 |
dl |
1.1 |
/** |
172 |
dl |
1.34 |
* Mixtures of instances of comparable and non-comparable classes |
173 |
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* can be inserted and found. |
174 |
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*/ |
175 |
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public void testMixedComparable() { |
176 |
jsr166 |
1.38 |
int size = 1200; // makes measured test run time -> 35ms |
177 |
jsr166 |
1.35 |
ConcurrentHashMap<Object, Object> map = |
178 |
dl |
1.34 |
new ConcurrentHashMap<Object, Object>(); |
179 |
jsr166 |
1.38 |
Random rng = new Random(); |
180 |
jsr166 |
1.35 |
for (int i = 0; i < size; i++) { |
181 |
dl |
1.34 |
Object x; |
182 |
jsr166 |
1.35 |
switch (rng.nextInt(4)) { |
183 |
dl |
1.34 |
case 0: |
184 |
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x = new Object(); |
185 |
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break; |
186 |
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case 1: |
187 |
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x = new CollidingObject(Integer.toString(i)); |
188 |
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break; |
189 |
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default: |
190 |
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x = new ComparableCollidingObject(Integer.toString(i)); |
191 |
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} |
192 |
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assertNull(map.put(x, x)); |
193 |
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} |
194 |
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int count = 0; |
195 |
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for (Object k : map.keySet()) { |
196 |
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assertEquals(map.get(k), k); |
197 |
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++count; |
198 |
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} |
199 |
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assertEquals(count, size); |
200 |
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assertEquals(map.size(), size); |
201 |
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for (Object k : map.keySet()) { |
202 |
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assertEquals(map.put(k, k), k); |
203 |
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} |
204 |
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} |
205 |
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206 |
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/** |
207 |
jsr166 |
1.22 |
* clear removes all pairs |
208 |
dl |
1.1 |
*/ |
209 |
dl |
1.5 |
public void testClear() { |
210 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
211 |
jsr166 |
1.17 |
map.clear(); |
212 |
jsr166 |
1.26 |
assertEquals(0, map.size()); |
213 |
dl |
1.1 |
} |
214 |
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215 |
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/** |
216 |
jsr166 |
1.22 |
* Maps with same contents are equal |
217 |
dl |
1.5 |
*/ |
218 |
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public void testEquals() { |
219 |
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ConcurrentHashMap map1 = map5(); |
220 |
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ConcurrentHashMap map2 = map5(); |
221 |
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assertEquals(map1, map2); |
222 |
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assertEquals(map2, map1); |
223 |
jsr166 |
1.17 |
map1.clear(); |
224 |
dl |
1.5 |
assertFalse(map1.equals(map2)); |
225 |
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assertFalse(map2.equals(map1)); |
226 |
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} |
227 |
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|
228 |
dl |
1.36 |
/** |
229 |
jsr166 |
1.37 |
* hashCode() equals sum of each key.hashCode ^ value.hashCode |
230 |
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*/ |
231 |
dl |
1.36 |
public void testHashCode() { |
232 |
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ConcurrentHashMap<Integer,String> map = map5(); |
233 |
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int sum = 0; |
234 |
|
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for (Map.Entry<Integer,String> e : map.entrySet()) |
235 |
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sum += e.getKey().hashCode() ^ e.getValue().hashCode(); |
236 |
|
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assertEquals(sum, map.hashCode()); |
237 |
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} |
238 |
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|
239 |
dl |
1.5 |
/** |
240 |
jsr166 |
1.22 |
* contains returns true for contained value |
241 |
dl |
1.1 |
*/ |
242 |
dl |
1.5 |
public void testContains() { |
243 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
244 |
jsr166 |
1.17 |
assertTrue(map.contains("A")); |
245 |
dl |
1.1 |
assertFalse(map.contains("Z")); |
246 |
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} |
247 |
jsr166 |
1.14 |
|
248 |
dl |
1.1 |
/** |
249 |
jsr166 |
1.22 |
* containsKey returns true for contained key |
250 |
dl |
1.1 |
*/ |
251 |
dl |
1.5 |
public void testContainsKey() { |
252 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
253 |
jsr166 |
1.17 |
assertTrue(map.containsKey(one)); |
254 |
dl |
1.5 |
assertFalse(map.containsKey(zero)); |
255 |
dl |
1.1 |
} |
256 |
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|
257 |
|
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/** |
258 |
jsr166 |
1.22 |
* containsValue returns true for held values |
259 |
dl |
1.1 |
*/ |
260 |
dl |
1.5 |
public void testContainsValue() { |
261 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
262 |
jsr166 |
1.17 |
assertTrue(map.containsValue("A")); |
263 |
dl |
1.11 |
assertFalse(map.containsValue("Z")); |
264 |
dl |
1.1 |
} |
265 |
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|
266 |
|
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/** |
267 |
jsr166 |
1.22 |
* enumeration returns an enumeration containing the correct |
268 |
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* elements |
269 |
dl |
1.1 |
*/ |
270 |
dl |
1.5 |
public void testEnumeration() { |
271 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
272 |
jsr166 |
1.17 |
Enumeration e = map.elements(); |
273 |
|
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int count = 0; |
274 |
|
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while (e.hasMoreElements()) { |
275 |
|
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count++; |
276 |
|
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e.nextElement(); |
277 |
|
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} |
278 |
|
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assertEquals(5, count); |
279 |
dl |
1.4 |
} |
280 |
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|
281 |
|
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/** |
282 |
jsr166 |
1.22 |
* get returns the correct element at the given key, |
283 |
|
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* or null if not present |
284 |
dl |
1.1 |
*/ |
285 |
dl |
1.5 |
public void testGet() { |
286 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
287 |
jsr166 |
1.17 |
assertEquals("A", (String)map.get(one)); |
288 |
dl |
1.1 |
ConcurrentHashMap empty = new ConcurrentHashMap(); |
289 |
dl |
1.5 |
assertNull(map.get("anything")); |
290 |
jsr166 |
1.42 |
assertNull(empty.get("anything")); |
291 |
dl |
1.1 |
} |
292 |
|
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|
293 |
|
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/** |
294 |
jsr166 |
1.22 |
* isEmpty is true of empty map and false for non-empty |
295 |
dl |
1.1 |
*/ |
296 |
dl |
1.5 |
public void testIsEmpty() { |
297 |
dl |
1.1 |
ConcurrentHashMap empty = new ConcurrentHashMap(); |
298 |
|
|
ConcurrentHashMap map = map5(); |
299 |
jsr166 |
1.17 |
assertTrue(empty.isEmpty()); |
300 |
dl |
1.1 |
assertFalse(map.isEmpty()); |
301 |
|
|
} |
302 |
|
|
|
303 |
|
|
/** |
304 |
jsr166 |
1.22 |
* keys returns an enumeration containing all the keys from the map |
305 |
dl |
1.1 |
*/ |
306 |
dl |
1.5 |
public void testKeys() { |
307 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
308 |
jsr166 |
1.17 |
Enumeration e = map.keys(); |
309 |
|
|
int count = 0; |
310 |
|
|
while (e.hasMoreElements()) { |
311 |
|
|
count++; |
312 |
|
|
e.nextElement(); |
313 |
|
|
} |
314 |
|
|
assertEquals(5, count); |
315 |
dl |
1.1 |
} |
316 |
|
|
|
317 |
|
|
/** |
318 |
jsr166 |
1.22 |
* keySet returns a Set containing all the keys |
319 |
dl |
1.1 |
*/ |
320 |
dl |
1.5 |
public void testKeySet() { |
321 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
322 |
jsr166 |
1.17 |
Set s = map.keySet(); |
323 |
|
|
assertEquals(5, s.size()); |
324 |
|
|
assertTrue(s.contains(one)); |
325 |
|
|
assertTrue(s.contains(two)); |
326 |
|
|
assertTrue(s.contains(three)); |
327 |
|
|
assertTrue(s.contains(four)); |
328 |
|
|
assertTrue(s.contains(five)); |
329 |
dl |
1.1 |
} |
330 |
|
|
|
331 |
dl |
1.5 |
/** |
332 |
jsr166 |
1.22 |
* keySet.toArray returns contains all keys |
333 |
dl |
1.13 |
*/ |
334 |
|
|
public void testKeySetToArray() { |
335 |
|
|
ConcurrentHashMap map = map5(); |
336 |
jsr166 |
1.17 |
Set s = map.keySet(); |
337 |
dl |
1.13 |
Object[] ar = s.toArray(); |
338 |
|
|
assertTrue(s.containsAll(Arrays.asList(ar))); |
339 |
jsr166 |
1.17 |
assertEquals(5, ar.length); |
340 |
dl |
1.13 |
ar[0] = m10; |
341 |
|
|
assertFalse(s.containsAll(Arrays.asList(ar))); |
342 |
|
|
} |
343 |
|
|
|
344 |
|
|
/** |
345 |
jsr166 |
1.22 |
* Values.toArray contains all values |
346 |
dl |
1.13 |
*/ |
347 |
|
|
public void testValuesToArray() { |
348 |
|
|
ConcurrentHashMap map = map5(); |
349 |
jsr166 |
1.17 |
Collection v = map.values(); |
350 |
dl |
1.13 |
Object[] ar = v.toArray(); |
351 |
|
|
ArrayList s = new ArrayList(Arrays.asList(ar)); |
352 |
jsr166 |
1.17 |
assertEquals(5, ar.length); |
353 |
|
|
assertTrue(s.contains("A")); |
354 |
|
|
assertTrue(s.contains("B")); |
355 |
|
|
assertTrue(s.contains("C")); |
356 |
|
|
assertTrue(s.contains("D")); |
357 |
|
|
assertTrue(s.contains("E")); |
358 |
dl |
1.13 |
} |
359 |
|
|
|
360 |
|
|
/** |
361 |
jsr166 |
1.22 |
* entrySet.toArray contains all entries |
362 |
dl |
1.13 |
*/ |
363 |
|
|
public void testEntrySetToArray() { |
364 |
|
|
ConcurrentHashMap map = map5(); |
365 |
jsr166 |
1.17 |
Set s = map.entrySet(); |
366 |
dl |
1.13 |
Object[] ar = s.toArray(); |
367 |
|
|
assertEquals(5, ar.length); |
368 |
|
|
for (int i = 0; i < 5; ++i) { |
369 |
|
|
assertTrue(map.containsKey(((Map.Entry)(ar[i])).getKey())); |
370 |
|
|
assertTrue(map.containsValue(((Map.Entry)(ar[i])).getValue())); |
371 |
|
|
} |
372 |
|
|
} |
373 |
|
|
|
374 |
|
|
/** |
375 |
dl |
1.5 |
* values collection contains all values |
376 |
|
|
*/ |
377 |
|
|
public void testValues() { |
378 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
379 |
jsr166 |
1.17 |
Collection s = map.values(); |
380 |
|
|
assertEquals(5, s.size()); |
381 |
|
|
assertTrue(s.contains("A")); |
382 |
|
|
assertTrue(s.contains("B")); |
383 |
|
|
assertTrue(s.contains("C")); |
384 |
|
|
assertTrue(s.contains("D")); |
385 |
|
|
assertTrue(s.contains("E")); |
386 |
dl |
1.1 |
} |
387 |
|
|
|
388 |
dl |
1.5 |
/** |
389 |
|
|
* entrySet contains all pairs |
390 |
|
|
*/ |
391 |
|
|
public void testEntrySet() { |
392 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
393 |
jsr166 |
1.17 |
Set s = map.entrySet(); |
394 |
|
|
assertEquals(5, s.size()); |
395 |
dl |
1.1 |
Iterator it = s.iterator(); |
396 |
|
|
while (it.hasNext()) { |
397 |
|
|
Map.Entry e = (Map.Entry) it.next(); |
398 |
jsr166 |
1.14 |
assertTrue( |
399 |
dl |
1.1 |
(e.getKey().equals(one) && e.getValue().equals("A")) || |
400 |
|
|
(e.getKey().equals(two) && e.getValue().equals("B")) || |
401 |
|
|
(e.getKey().equals(three) && e.getValue().equals("C")) || |
402 |
|
|
(e.getKey().equals(four) && e.getValue().equals("D")) || |
403 |
|
|
(e.getKey().equals(five) && e.getValue().equals("E"))); |
404 |
|
|
} |
405 |
|
|
} |
406 |
|
|
|
407 |
|
|
/** |
408 |
jsr166 |
1.22 |
* putAll adds all key-value pairs from the given map |
409 |
dl |
1.1 |
*/ |
410 |
dl |
1.5 |
public void testPutAll() { |
411 |
dl |
1.1 |
ConcurrentHashMap empty = new ConcurrentHashMap(); |
412 |
|
|
ConcurrentHashMap map = map5(); |
413 |
jsr166 |
1.17 |
empty.putAll(map); |
414 |
|
|
assertEquals(5, empty.size()); |
415 |
|
|
assertTrue(empty.containsKey(one)); |
416 |
|
|
assertTrue(empty.containsKey(two)); |
417 |
|
|
assertTrue(empty.containsKey(three)); |
418 |
|
|
assertTrue(empty.containsKey(four)); |
419 |
|
|
assertTrue(empty.containsKey(five)); |
420 |
dl |
1.1 |
} |
421 |
|
|
|
422 |
|
|
/** |
423 |
jsr166 |
1.22 |
* putIfAbsent works when the given key is not present |
424 |
dl |
1.1 |
*/ |
425 |
dl |
1.5 |
public void testPutIfAbsent() { |
426 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
427 |
jsr166 |
1.17 |
map.putIfAbsent(six, "Z"); |
428 |
dl |
1.7 |
assertTrue(map.containsKey(six)); |
429 |
dl |
1.1 |
} |
430 |
|
|
|
431 |
|
|
/** |
432 |
jsr166 |
1.22 |
* putIfAbsent does not add the pair if the key is already present |
433 |
dl |
1.1 |
*/ |
434 |
dl |
1.5 |
public void testPutIfAbsent2() { |
435 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
436 |
|
|
assertEquals("A", map.putIfAbsent(one, "Z")); |
437 |
|
|
} |
438 |
|
|
|
439 |
|
|
/** |
440 |
jsr166 |
1.22 |
* replace fails when the given key is not present |
441 |
dl |
1.7 |
*/ |
442 |
|
|
public void testReplace() { |
443 |
|
|
ConcurrentHashMap map = map5(); |
444 |
jsr166 |
1.17 |
assertNull(map.replace(six, "Z")); |
445 |
dl |
1.7 |
assertFalse(map.containsKey(six)); |
446 |
|
|
} |
447 |
|
|
|
448 |
|
|
/** |
449 |
jsr166 |
1.22 |
* replace succeeds if the key is already present |
450 |
dl |
1.7 |
*/ |
451 |
|
|
public void testReplace2() { |
452 |
|
|
ConcurrentHashMap map = map5(); |
453 |
dl |
1.8 |
assertNotNull(map.replace(one, "Z")); |
454 |
dl |
1.7 |
assertEquals("Z", map.get(one)); |
455 |
|
|
} |
456 |
|
|
|
457 |
|
|
/** |
458 |
|
|
* replace value fails when the given key not mapped to expected value |
459 |
|
|
*/ |
460 |
|
|
public void testReplaceValue() { |
461 |
|
|
ConcurrentHashMap map = map5(); |
462 |
|
|
assertEquals("A", map.get(one)); |
463 |
jsr166 |
1.17 |
assertFalse(map.replace(one, "Z", "Z")); |
464 |
dl |
1.7 |
assertEquals("A", map.get(one)); |
465 |
|
|
} |
466 |
|
|
|
467 |
|
|
/** |
468 |
|
|
* replace value succeeds when the given key mapped to expected value |
469 |
|
|
*/ |
470 |
|
|
public void testReplaceValue2() { |
471 |
|
|
ConcurrentHashMap map = map5(); |
472 |
|
|
assertEquals("A", map.get(one)); |
473 |
jsr166 |
1.17 |
assertTrue(map.replace(one, "A", "Z")); |
474 |
dl |
1.7 |
assertEquals("Z", map.get(one)); |
475 |
|
|
} |
476 |
|
|
|
477 |
|
|
/** |
478 |
jsr166 |
1.22 |
* remove removes the correct key-value pair from the map |
479 |
dl |
1.1 |
*/ |
480 |
dl |
1.5 |
public void testRemove() { |
481 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
482 |
jsr166 |
1.17 |
map.remove(five); |
483 |
|
|
assertEquals(4, map.size()); |
484 |
|
|
assertFalse(map.containsKey(five)); |
485 |
dl |
1.1 |
} |
486 |
|
|
|
487 |
dl |
1.5 |
/** |
488 |
|
|
* remove(key,value) removes only if pair present |
489 |
|
|
*/ |
490 |
|
|
public void testRemove2() { |
491 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
492 |
jsr166 |
1.17 |
map.remove(five, "E"); |
493 |
|
|
assertEquals(4, map.size()); |
494 |
|
|
assertFalse(map.containsKey(five)); |
495 |
|
|
map.remove(four, "A"); |
496 |
|
|
assertEquals(4, map.size()); |
497 |
|
|
assertTrue(map.containsKey(four)); |
498 |
dl |
1.1 |
} |
499 |
|
|
|
500 |
|
|
/** |
501 |
jsr166 |
1.22 |
* size returns the correct values |
502 |
dl |
1.1 |
*/ |
503 |
dl |
1.5 |
public void testSize() { |
504 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
505 |
|
|
ConcurrentHashMap empty = new ConcurrentHashMap(); |
506 |
jsr166 |
1.17 |
assertEquals(0, empty.size()); |
507 |
|
|
assertEquals(5, map.size()); |
508 |
dl |
1.1 |
} |
509 |
|
|
|
510 |
dl |
1.5 |
/** |
511 |
|
|
* toString contains toString of elements |
512 |
|
|
*/ |
513 |
|
|
public void testToString() { |
514 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
515 |
|
|
String s = map.toString(); |
516 |
|
|
for (int i = 1; i <= 5; ++i) { |
517 |
jsr166 |
1.24 |
assertTrue(s.contains(String.valueOf(i))); |
518 |
dl |
1.1 |
} |
519 |
jsr166 |
1.14 |
} |
520 |
dl |
1.1 |
|
521 |
|
|
// Exception tests |
522 |
jsr166 |
1.14 |
|
523 |
dl |
1.5 |
/** |
524 |
dl |
1.36 |
* Cannot create with only negative capacity |
525 |
dl |
1.5 |
*/ |
526 |
|
|
public void testConstructor1() { |
527 |
|
|
try { |
528 |
dl |
1.36 |
new ConcurrentHashMap(-1); |
529 |
dl |
1.5 |
shouldThrow(); |
530 |
jsr166 |
1.19 |
} catch (IllegalArgumentException success) {} |
531 |
dl |
1.1 |
} |
532 |
|
|
|
533 |
dl |
1.5 |
/** |
534 |
dl |
1.36 |
* Constructor (initialCapacity, loadFactor) throws |
535 |
|
|
* IllegalArgumentException if either argument is negative |
536 |
|
|
*/ |
537 |
dl |
1.5 |
public void testConstructor2() { |
538 |
|
|
try { |
539 |
dl |
1.36 |
new ConcurrentHashMap(-1, .75f); |
540 |
dl |
1.5 |
shouldThrow(); |
541 |
jsr166 |
1.37 |
} catch (IllegalArgumentException e) {} |
542 |
|
|
|
543 |
dl |
1.36 |
try { |
544 |
|
|
new ConcurrentHashMap(16, -1); |
545 |
|
|
shouldThrow(); |
546 |
jsr166 |
1.37 |
} catch (IllegalArgumentException e) {} |
547 |
dl |
1.1 |
} |
548 |
jsr166 |
1.37 |
|
549 |
|
|
/** |
550 |
|
|
* Constructor (initialCapacity, loadFactor, concurrencyLevel) |
551 |
|
|
* throws IllegalArgumentException if any argument is negative |
552 |
|
|
*/ |
553 |
dl |
1.36 |
public void testConstructor3() { |
554 |
jsr166 |
1.37 |
try { |
555 |
|
|
new ConcurrentHashMap(-1, .75f, 1); |
556 |
|
|
shouldThrow(); |
557 |
|
|
} catch (IllegalArgumentException e) {} |
558 |
|
|
|
559 |
|
|
try { |
560 |
|
|
new ConcurrentHashMap(16, -1, 1); |
561 |
|
|
shouldThrow(); |
562 |
|
|
} catch (IllegalArgumentException e) {} |
563 |
|
|
|
564 |
|
|
try { |
565 |
|
|
new ConcurrentHashMap(16, .75f, -1); |
566 |
|
|
shouldThrow(); |
567 |
|
|
} catch (IllegalArgumentException e) {} |
568 |
|
|
} |
569 |
dl |
1.1 |
|
570 |
dl |
1.5 |
/** |
571 |
dl |
1.36 |
* ConcurrentHashMap(map) throws NullPointerException if the given |
572 |
|
|
* map is null |
573 |
dl |
1.5 |
*/ |
574 |
dl |
1.36 |
public void testConstructor4() { |
575 |
dl |
1.5 |
try { |
576 |
dl |
1.36 |
new ConcurrentHashMap(null); |
577 |
dl |
1.5 |
shouldThrow(); |
578 |
dl |
1.36 |
} catch (NullPointerException e) {} |
579 |
|
|
} |
580 |
|
|
|
581 |
|
|
/** |
582 |
|
|
* ConcurrentHashMap(map) creates a new map with the same mappings |
583 |
|
|
* as the given map |
584 |
|
|
*/ |
585 |
|
|
public void testConstructor5() { |
586 |
|
|
ConcurrentHashMap map1 = map5(); |
587 |
|
|
ConcurrentHashMap map2 = new ConcurrentHashMap(map5()); |
588 |
|
|
assertTrue(map2.equals(map1)); |
589 |
|
|
map2.put(one, "F"); |
590 |
|
|
assertFalse(map2.equals(map1)); |
591 |
dl |
1.1 |
} |
592 |
|
|
|
593 |
dl |
1.5 |
/** |
594 |
|
|
* get(null) throws NPE |
595 |
|
|
*/ |
596 |
|
|
public void testGet_NullPointerException() { |
597 |
|
|
try { |
598 |
dl |
1.1 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
599 |
|
|
c.get(null); |
600 |
dl |
1.5 |
shouldThrow(); |
601 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
602 |
dl |
1.1 |
} |
603 |
|
|
|
604 |
dl |
1.5 |
/** |
605 |
|
|
* containsKey(null) throws NPE |
606 |
|
|
*/ |
607 |
|
|
public void testContainsKey_NullPointerException() { |
608 |
|
|
try { |
609 |
dl |
1.1 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
610 |
|
|
c.containsKey(null); |
611 |
dl |
1.5 |
shouldThrow(); |
612 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
613 |
dl |
1.1 |
} |
614 |
|
|
|
615 |
dl |
1.5 |
/** |
616 |
|
|
* containsValue(null) throws NPE |
617 |
|
|
*/ |
618 |
|
|
public void testContainsValue_NullPointerException() { |
619 |
|
|
try { |
620 |
dl |
1.1 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
621 |
|
|
c.containsValue(null); |
622 |
dl |
1.5 |
shouldThrow(); |
623 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
624 |
dl |
1.1 |
} |
625 |
|
|
|
626 |
dl |
1.5 |
/** |
627 |
|
|
* contains(null) throws NPE |
628 |
|
|
*/ |
629 |
|
|
public void testContains_NullPointerException() { |
630 |
|
|
try { |
631 |
dl |
1.1 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
632 |
|
|
c.contains(null); |
633 |
dl |
1.5 |
shouldThrow(); |
634 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
635 |
dl |
1.1 |
} |
636 |
|
|
|
637 |
dl |
1.5 |
/** |
638 |
|
|
* put(null,x) throws NPE |
639 |
|
|
*/ |
640 |
|
|
public void testPut1_NullPointerException() { |
641 |
|
|
try { |
642 |
dl |
1.1 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
643 |
|
|
c.put(null, "whatever"); |
644 |
dl |
1.5 |
shouldThrow(); |
645 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
646 |
dl |
1.1 |
} |
647 |
|
|
|
648 |
dl |
1.5 |
/** |
649 |
|
|
* put(x, null) throws NPE |
650 |
|
|
*/ |
651 |
|
|
public void testPut2_NullPointerException() { |
652 |
|
|
try { |
653 |
dl |
1.1 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
654 |
|
|
c.put("whatever", null); |
655 |
dl |
1.5 |
shouldThrow(); |
656 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
657 |
dl |
1.1 |
} |
658 |
|
|
|
659 |
dl |
1.5 |
/** |
660 |
|
|
* putIfAbsent(null, x) throws NPE |
661 |
|
|
*/ |
662 |
|
|
public void testPutIfAbsent1_NullPointerException() { |
663 |
|
|
try { |
664 |
dl |
1.1 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
665 |
|
|
c.putIfAbsent(null, "whatever"); |
666 |
dl |
1.5 |
shouldThrow(); |
667 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
668 |
dl |
1.1 |
} |
669 |
|
|
|
670 |
dl |
1.5 |
/** |
671 |
dl |
1.7 |
* replace(null, x) throws NPE |
672 |
|
|
*/ |
673 |
|
|
public void testReplace_NullPointerException() { |
674 |
|
|
try { |
675 |
|
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
676 |
|
|
c.replace(null, "whatever"); |
677 |
|
|
shouldThrow(); |
678 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
679 |
dl |
1.7 |
} |
680 |
|
|
|
681 |
|
|
/** |
682 |
|
|
* replace(null, x, y) throws NPE |
683 |
|
|
*/ |
684 |
|
|
public void testReplaceValue_NullPointerException() { |
685 |
|
|
try { |
686 |
|
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
687 |
|
|
c.replace(null, one, "whatever"); |
688 |
|
|
shouldThrow(); |
689 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
690 |
dl |
1.7 |
} |
691 |
|
|
|
692 |
|
|
/** |
693 |
dl |
1.5 |
* putIfAbsent(x, null) throws NPE |
694 |
|
|
*/ |
695 |
|
|
public void testPutIfAbsent2_NullPointerException() { |
696 |
|
|
try { |
697 |
dl |
1.1 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
698 |
|
|
c.putIfAbsent("whatever", null); |
699 |
dl |
1.7 |
shouldThrow(); |
700 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
701 |
dl |
1.7 |
} |
702 |
|
|
|
703 |
|
|
/** |
704 |
|
|
* replace(x, null) throws NPE |
705 |
|
|
*/ |
706 |
|
|
public void testReplace2_NullPointerException() { |
707 |
|
|
try { |
708 |
|
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
709 |
|
|
c.replace("whatever", null); |
710 |
|
|
shouldThrow(); |
711 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
712 |
dl |
1.7 |
} |
713 |
|
|
|
714 |
|
|
/** |
715 |
|
|
* replace(x, null, y) throws NPE |
716 |
|
|
*/ |
717 |
|
|
public void testReplaceValue2_NullPointerException() { |
718 |
|
|
try { |
719 |
|
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
720 |
|
|
c.replace("whatever", null, "A"); |
721 |
|
|
shouldThrow(); |
722 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
723 |
dl |
1.7 |
} |
724 |
|
|
|
725 |
|
|
/** |
726 |
|
|
* replace(x, y, null) throws NPE |
727 |
|
|
*/ |
728 |
|
|
public void testReplaceValue3_NullPointerException() { |
729 |
|
|
try { |
730 |
|
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
731 |
|
|
c.replace("whatever", one, null); |
732 |
dl |
1.5 |
shouldThrow(); |
733 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
734 |
dl |
1.1 |
} |
735 |
|
|
|
736 |
dl |
1.5 |
/** |
737 |
|
|
* remove(null) throws NPE |
738 |
|
|
*/ |
739 |
|
|
public void testRemove1_NullPointerException() { |
740 |
|
|
try { |
741 |
dl |
1.1 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
742 |
|
|
c.put("sadsdf", "asdads"); |
743 |
|
|
c.remove(null); |
744 |
dl |
1.5 |
shouldThrow(); |
745 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
746 |
dl |
1.1 |
} |
747 |
|
|
|
748 |
dl |
1.5 |
/** |
749 |
|
|
* remove(null, x) throws NPE |
750 |
|
|
*/ |
751 |
|
|
public void testRemove2_NullPointerException() { |
752 |
|
|
try { |
753 |
dl |
1.1 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
754 |
|
|
c.put("sadsdf", "asdads"); |
755 |
|
|
c.remove(null, "whatever"); |
756 |
dl |
1.5 |
shouldThrow(); |
757 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
758 |
dl |
1.1 |
} |
759 |
dl |
1.2 |
|
760 |
dl |
1.5 |
/** |
761 |
dl |
1.12 |
* remove(x, null) returns false |
762 |
|
|
*/ |
763 |
|
|
public void testRemove3() { |
764 |
jsr166 |
1.19 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
765 |
|
|
c.put("sadsdf", "asdads"); |
766 |
|
|
assertFalse(c.remove("sadsdf", null)); |
767 |
dl |
1.12 |
} |
768 |
|
|
|
769 |
|
|
/** |
770 |
dl |
1.5 |
* A deserialized map equals original |
771 |
|
|
*/ |
772 |
jsr166 |
1.18 |
public void testSerialization() throws Exception { |
773 |
jsr166 |
1.25 |
Map x = map5(); |
774 |
|
|
Map y = serialClone(x); |
775 |
dl |
1.2 |
|
776 |
jsr166 |
1.31 |
assertNotSame(x, y); |
777 |
jsr166 |
1.25 |
assertEquals(x.size(), y.size()); |
778 |
|
|
assertEquals(x, y); |
779 |
|
|
assertEquals(y, x); |
780 |
dl |
1.2 |
} |
781 |
dl |
1.6 |
|
782 |
|
|
/** |
783 |
|
|
* SetValue of an EntrySet entry sets value in the map. |
784 |
|
|
*/ |
785 |
|
|
public void testSetValueWriteThrough() { |
786 |
jsr166 |
1.14 |
// Adapted from a bug report by Eric Zoerner |
787 |
dl |
1.6 |
ConcurrentHashMap map = new ConcurrentHashMap(2, 5.0f, 1); |
788 |
|
|
assertTrue(map.isEmpty()); |
789 |
|
|
for (int i = 0; i < 20; i++) |
790 |
|
|
map.put(new Integer(i), new Integer(i)); |
791 |
|
|
assertFalse(map.isEmpty()); |
792 |
|
|
Map.Entry entry1 = (Map.Entry)map.entrySet().iterator().next(); |
793 |
dl |
1.29 |
// Unless it happens to be first (in which case remainder of |
794 |
|
|
// test is skipped), remove a possibly-colliding key from map |
795 |
|
|
// which, under some implementations, may cause entry1 to be |
796 |
|
|
// cloned in map |
797 |
|
|
if (!entry1.getKey().equals(new Integer(16))) { |
798 |
|
|
map.remove(new Integer(16)); |
799 |
|
|
entry1.setValue("XYZ"); |
800 |
|
|
assertTrue(map.containsValue("XYZ")); // fails if write-through broken |
801 |
|
|
} |
802 |
dl |
1.6 |
} |
803 |
jsr166 |
1.14 |
|
804 |
dl |
1.1 |
} |