1 |
dl |
1.1 |
/* |
2 |
dl |
1.9 |
* Written by Doug Lea with assistance from members of JCP JSR-166 |
3 |
|
|
* 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 |
|
|
* Pat Fisher, Mike Judd. |
7 |
dl |
1.1 |
*/ |
8 |
|
|
|
9 |
jsr166 |
1.40 |
import java.util.ArrayList; |
10 |
|
|
import java.util.Arrays; |
11 |
|
|
import java.util.Collection; |
12 |
|
|
import java.util.Collections; |
13 |
|
|
import java.util.Enumeration; |
14 |
|
|
import java.util.Iterator; |
15 |
|
|
import java.util.Map; |
16 |
|
|
import java.util.Random; |
17 |
|
|
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 |
|
|
import junit.framework.TestSuite; |
22 |
|
|
|
23 |
jsr166 |
1.16 |
public class ConcurrentHashMapTest extends JSR166TestCase { |
24 |
dl |
1.1 |
public static void main(String[] args) { |
25 |
jsr166 |
1.45 |
main(suite(), args); |
26 |
dl |
1.1 |
} |
27 |
|
|
public static Test suite() { |
28 |
jsr166 |
1.17 |
return new TestSuite(ConcurrentHashMapTest.class); |
29 |
dl |
1.1 |
} |
30 |
|
|
|
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 |
jsr166 |
1.52 |
ConcurrentHashMap<Integer, String> map = new ConcurrentHashMap<>(5); |
36 |
dl |
1.1 |
assertTrue(map.isEmpty()); |
37 |
jsr166 |
1.17 |
map.put(one, "A"); |
38 |
|
|
map.put(two, "B"); |
39 |
|
|
map.put(three, "C"); |
40 |
|
|
map.put(four, "D"); |
41 |
|
|
map.put(five, "E"); |
42 |
dl |
1.1 |
assertFalse(map.isEmpty()); |
43 |
|
|
assertEquals(5, map.size()); |
44 |
jsr166 |
1.17 |
return map; |
45 |
dl |
1.1 |
} |
46 |
|
|
|
47 |
jsr166 |
1.33 |
/** Re-implement Integer.compare for old java versions */ |
48 |
jsr166 |
1.46 |
static int compare(int x, int y) { |
49 |
|
|
return (x < y) ? -1 : (x > y) ? 1 : 0; |
50 |
|
|
} |
51 |
jsr166 |
1.33 |
|
52 |
jsr166 |
1.30 |
// classes for testing Comparable fallbacks |
53 |
|
|
static class BI implements Comparable<BI> { |
54 |
|
|
private final int value; |
55 |
|
|
BI(int value) { this.value = value; } |
56 |
|
|
public int compareTo(BI other) { |
57 |
jsr166 |
1.33 |
return compare(value, other.value); |
58 |
jsr166 |
1.30 |
} |
59 |
|
|
public boolean equals(Object x) { |
60 |
|
|
return (x instanceof BI) && ((BI)x).value == value; |
61 |
|
|
} |
62 |
|
|
public int hashCode() { return 42; } |
63 |
|
|
} |
64 |
|
|
static class CI extends BI { CI(int value) { super(value); } } |
65 |
|
|
static class DI extends BI { DI(int value) { super(value); } } |
66 |
|
|
|
67 |
|
|
static class BS implements Comparable<BS> { |
68 |
|
|
private final String value; |
69 |
|
|
BS(String value) { this.value = value; } |
70 |
|
|
public int compareTo(BS other) { |
71 |
|
|
return value.compareTo(other.value); |
72 |
|
|
} |
73 |
|
|
public boolean equals(Object x) { |
74 |
|
|
return (x instanceof BS) && value.equals(((BS)x).value); |
75 |
|
|
} |
76 |
|
|
public int hashCode() { return 42; } |
77 |
|
|
} |
78 |
|
|
|
79 |
|
|
static class LexicographicList<E extends Comparable<E>> extends ArrayList<E> |
80 |
|
|
implements Comparable<LexicographicList<E>> { |
81 |
|
|
LexicographicList(Collection<E> c) { super(c); } |
82 |
|
|
LexicographicList(E e) { super(Collections.singleton(e)); } |
83 |
|
|
public int compareTo(LexicographicList<E> other) { |
84 |
|
|
int common = Math.min(size(), other.size()); |
85 |
|
|
int r = 0; |
86 |
|
|
for (int i = 0; i < common; i++) { |
87 |
|
|
if ((r = get(i).compareTo(other.get(i))) != 0) |
88 |
|
|
break; |
89 |
|
|
} |
90 |
|
|
if (r == 0) |
91 |
jsr166 |
1.33 |
r = compare(size(), other.size()); |
92 |
jsr166 |
1.30 |
return r; |
93 |
|
|
} |
94 |
|
|
private static final long serialVersionUID = 0; |
95 |
|
|
} |
96 |
|
|
|
97 |
dl |
1.34 |
static class CollidingObject { |
98 |
|
|
final String value; |
99 |
|
|
CollidingObject(final String value) { this.value = value; } |
100 |
|
|
public int hashCode() { return this.value.hashCode() & 1; } |
101 |
|
|
public boolean equals(final Object obj) { |
102 |
|
|
return (obj instanceof CollidingObject) && ((CollidingObject)obj).value.equals(value); |
103 |
|
|
} |
104 |
|
|
} |
105 |
|
|
|
106 |
|
|
static class ComparableCollidingObject extends CollidingObject implements Comparable<ComparableCollidingObject> { |
107 |
|
|
ComparableCollidingObject(final String value) { super(value); } |
108 |
|
|
public int compareTo(final ComparableCollidingObject o) { |
109 |
|
|
return value.compareTo(o.value); |
110 |
|
|
} |
111 |
|
|
} |
112 |
|
|
|
113 |
jsr166 |
1.30 |
/** |
114 |
|
|
* Inserted elements that are subclasses of the same Comparable |
115 |
|
|
* class are found. |
116 |
|
|
*/ |
117 |
|
|
public void testComparableFamily() { |
118 |
jsr166 |
1.39 |
int size = 500; // makes measured test run time -> 60ms |
119 |
jsr166 |
1.32 |
ConcurrentHashMap<BI, Boolean> m = |
120 |
|
|
new ConcurrentHashMap<BI, Boolean>(); |
121 |
jsr166 |
1.39 |
for (int i = 0; i < size; i++) { |
122 |
jsr166 |
1.30 |
assertTrue(m.put(new CI(i), true) == null); |
123 |
|
|
} |
124 |
jsr166 |
1.39 |
for (int i = 0; i < size; i++) { |
125 |
jsr166 |
1.30 |
assertTrue(m.containsKey(new CI(i))); |
126 |
|
|
assertTrue(m.containsKey(new DI(i))); |
127 |
|
|
} |
128 |
|
|
} |
129 |
|
|
|
130 |
|
|
/** |
131 |
|
|
* Elements of classes with erased generic type parameters based |
132 |
|
|
* on Comparable can be inserted and found. |
133 |
|
|
*/ |
134 |
|
|
public void testGenericComparable() { |
135 |
jsr166 |
1.39 |
int size = 120; // makes measured test run time -> 60ms |
136 |
jsr166 |
1.32 |
ConcurrentHashMap<Object, Boolean> m = |
137 |
|
|
new ConcurrentHashMap<Object, Boolean>(); |
138 |
jsr166 |
1.39 |
for (int i = 0; i < size; i++) { |
139 |
jsr166 |
1.30 |
BI bi = new BI(i); |
140 |
|
|
BS bs = new BS(String.valueOf(i)); |
141 |
|
|
LexicographicList<BI> bis = new LexicographicList<BI>(bi); |
142 |
|
|
LexicographicList<BS> bss = new LexicographicList<BS>(bs); |
143 |
|
|
assertTrue(m.putIfAbsent(bis, true) == null); |
144 |
|
|
assertTrue(m.containsKey(bis)); |
145 |
|
|
if (m.putIfAbsent(bss, true) == null) |
146 |
|
|
assertTrue(m.containsKey(bss)); |
147 |
|
|
assertTrue(m.containsKey(bis)); |
148 |
|
|
} |
149 |
jsr166 |
1.39 |
for (int i = 0; i < size; i++) { |
150 |
|
|
assertTrue(m.containsKey(Collections.singletonList(new BI(i)))); |
151 |
jsr166 |
1.30 |
} |
152 |
|
|
} |
153 |
|
|
|
154 |
|
|
/** |
155 |
|
|
* Elements of non-comparable classes equal to those of classes |
156 |
|
|
* with erased generic type parameters based on Comparable can be |
157 |
|
|
* inserted and found. |
158 |
|
|
*/ |
159 |
|
|
public void testGenericComparable2() { |
160 |
jsr166 |
1.39 |
int size = 500; // makes measured test run time -> 60ms |
161 |
jsr166 |
1.32 |
ConcurrentHashMap<Object, Boolean> m = |
162 |
|
|
new ConcurrentHashMap<Object, Boolean>(); |
163 |
jsr166 |
1.39 |
for (int i = 0; i < size; i++) { |
164 |
|
|
m.put(Collections.singletonList(new BI(i)), true); |
165 |
jsr166 |
1.30 |
} |
166 |
|
|
|
167 |
jsr166 |
1.39 |
for (int i = 0; i < size; i++) { |
168 |
jsr166 |
1.30 |
LexicographicList<BI> bis = new LexicographicList<BI>(new BI(i)); |
169 |
|
|
assertTrue(m.containsKey(bis)); |
170 |
|
|
} |
171 |
|
|
} |
172 |
|
|
|
173 |
dl |
1.1 |
/** |
174 |
dl |
1.34 |
* Mixtures of instances of comparable and non-comparable classes |
175 |
|
|
* can be inserted and found. |
176 |
|
|
*/ |
177 |
|
|
public void testMixedComparable() { |
178 |
jsr166 |
1.38 |
int size = 1200; // makes measured test run time -> 35ms |
179 |
jsr166 |
1.35 |
ConcurrentHashMap<Object, Object> map = |
180 |
dl |
1.34 |
new ConcurrentHashMap<Object, Object>(); |
181 |
jsr166 |
1.38 |
Random rng = new Random(); |
182 |
jsr166 |
1.35 |
for (int i = 0; i < size; i++) { |
183 |
dl |
1.34 |
Object x; |
184 |
jsr166 |
1.35 |
switch (rng.nextInt(4)) { |
185 |
dl |
1.34 |
case 0: |
186 |
|
|
x = new Object(); |
187 |
|
|
break; |
188 |
|
|
case 1: |
189 |
|
|
x = new CollidingObject(Integer.toString(i)); |
190 |
|
|
break; |
191 |
|
|
default: |
192 |
|
|
x = new ComparableCollidingObject(Integer.toString(i)); |
193 |
|
|
} |
194 |
|
|
assertNull(map.put(x, x)); |
195 |
|
|
} |
196 |
|
|
int count = 0; |
197 |
|
|
for (Object k : map.keySet()) { |
198 |
|
|
assertEquals(map.get(k), k); |
199 |
|
|
++count; |
200 |
|
|
} |
201 |
|
|
assertEquals(count, size); |
202 |
|
|
assertEquals(map.size(), size); |
203 |
|
|
for (Object k : map.keySet()) { |
204 |
|
|
assertEquals(map.put(k, k), k); |
205 |
|
|
} |
206 |
|
|
} |
207 |
|
|
|
208 |
|
|
/** |
209 |
jsr166 |
1.22 |
* clear removes all pairs |
210 |
dl |
1.1 |
*/ |
211 |
dl |
1.5 |
public void testClear() { |
212 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
213 |
jsr166 |
1.17 |
map.clear(); |
214 |
jsr166 |
1.26 |
assertEquals(0, map.size()); |
215 |
dl |
1.1 |
} |
216 |
|
|
|
217 |
|
|
/** |
218 |
jsr166 |
1.22 |
* Maps with same contents are equal |
219 |
dl |
1.5 |
*/ |
220 |
|
|
public void testEquals() { |
221 |
|
|
ConcurrentHashMap map1 = map5(); |
222 |
|
|
ConcurrentHashMap map2 = map5(); |
223 |
|
|
assertEquals(map1, map2); |
224 |
|
|
assertEquals(map2, map1); |
225 |
jsr166 |
1.17 |
map1.clear(); |
226 |
dl |
1.5 |
assertFalse(map1.equals(map2)); |
227 |
|
|
assertFalse(map2.equals(map1)); |
228 |
|
|
} |
229 |
|
|
|
230 |
dl |
1.36 |
/** |
231 |
jsr166 |
1.37 |
* hashCode() equals sum of each key.hashCode ^ value.hashCode |
232 |
|
|
*/ |
233 |
dl |
1.36 |
public void testHashCode() { |
234 |
|
|
ConcurrentHashMap<Integer,String> map = map5(); |
235 |
|
|
int sum = 0; |
236 |
|
|
for (Map.Entry<Integer,String> e : map.entrySet()) |
237 |
|
|
sum += e.getKey().hashCode() ^ e.getValue().hashCode(); |
238 |
|
|
assertEquals(sum, map.hashCode()); |
239 |
|
|
} |
240 |
|
|
|
241 |
dl |
1.5 |
/** |
242 |
jsr166 |
1.22 |
* contains returns true for contained value |
243 |
dl |
1.1 |
*/ |
244 |
dl |
1.5 |
public void testContains() { |
245 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
246 |
jsr166 |
1.17 |
assertTrue(map.contains("A")); |
247 |
dl |
1.1 |
assertFalse(map.contains("Z")); |
248 |
|
|
} |
249 |
jsr166 |
1.14 |
|
250 |
dl |
1.1 |
/** |
251 |
jsr166 |
1.22 |
* containsKey returns true for contained key |
252 |
dl |
1.1 |
*/ |
253 |
dl |
1.5 |
public void testContainsKey() { |
254 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
255 |
jsr166 |
1.17 |
assertTrue(map.containsKey(one)); |
256 |
dl |
1.5 |
assertFalse(map.containsKey(zero)); |
257 |
dl |
1.1 |
} |
258 |
|
|
|
259 |
|
|
/** |
260 |
jsr166 |
1.22 |
* containsValue returns true for held values |
261 |
dl |
1.1 |
*/ |
262 |
dl |
1.5 |
public void testContainsValue() { |
263 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
264 |
jsr166 |
1.17 |
assertTrue(map.containsValue("A")); |
265 |
dl |
1.11 |
assertFalse(map.containsValue("Z")); |
266 |
dl |
1.1 |
} |
267 |
|
|
|
268 |
|
|
/** |
269 |
jsr166 |
1.22 |
* enumeration returns an enumeration containing the correct |
270 |
|
|
* elements |
271 |
dl |
1.1 |
*/ |
272 |
dl |
1.5 |
public void testEnumeration() { |
273 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
274 |
jsr166 |
1.17 |
Enumeration e = map.elements(); |
275 |
|
|
int count = 0; |
276 |
|
|
while (e.hasMoreElements()) { |
277 |
|
|
count++; |
278 |
|
|
e.nextElement(); |
279 |
|
|
} |
280 |
|
|
assertEquals(5, count); |
281 |
dl |
1.4 |
} |
282 |
|
|
|
283 |
|
|
/** |
284 |
jsr166 |
1.22 |
* get returns the correct element at the given key, |
285 |
|
|
* or null if not present |
286 |
dl |
1.1 |
*/ |
287 |
dl |
1.5 |
public void testGet() { |
288 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
289 |
jsr166 |
1.17 |
assertEquals("A", (String)map.get(one)); |
290 |
dl |
1.1 |
ConcurrentHashMap empty = new ConcurrentHashMap(); |
291 |
dl |
1.5 |
assertNull(map.get("anything")); |
292 |
jsr166 |
1.42 |
assertNull(empty.get("anything")); |
293 |
dl |
1.1 |
} |
294 |
|
|
|
295 |
|
|
/** |
296 |
jsr166 |
1.22 |
* isEmpty is true of empty map and false for non-empty |
297 |
dl |
1.1 |
*/ |
298 |
dl |
1.5 |
public void testIsEmpty() { |
299 |
dl |
1.1 |
ConcurrentHashMap empty = new ConcurrentHashMap(); |
300 |
|
|
ConcurrentHashMap map = map5(); |
301 |
jsr166 |
1.17 |
assertTrue(empty.isEmpty()); |
302 |
dl |
1.1 |
assertFalse(map.isEmpty()); |
303 |
|
|
} |
304 |
|
|
|
305 |
|
|
/** |
306 |
jsr166 |
1.22 |
* keys returns an enumeration containing all the keys from the map |
307 |
dl |
1.1 |
*/ |
308 |
dl |
1.5 |
public void testKeys() { |
309 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
310 |
jsr166 |
1.17 |
Enumeration e = map.keys(); |
311 |
|
|
int count = 0; |
312 |
|
|
while (e.hasMoreElements()) { |
313 |
|
|
count++; |
314 |
|
|
e.nextElement(); |
315 |
|
|
} |
316 |
|
|
assertEquals(5, count); |
317 |
dl |
1.1 |
} |
318 |
|
|
|
319 |
|
|
/** |
320 |
jsr166 |
1.22 |
* keySet returns a Set containing all the keys |
321 |
dl |
1.1 |
*/ |
322 |
dl |
1.5 |
public void testKeySet() { |
323 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
324 |
jsr166 |
1.17 |
Set s = map.keySet(); |
325 |
|
|
assertEquals(5, s.size()); |
326 |
|
|
assertTrue(s.contains(one)); |
327 |
|
|
assertTrue(s.contains(two)); |
328 |
|
|
assertTrue(s.contains(three)); |
329 |
|
|
assertTrue(s.contains(four)); |
330 |
|
|
assertTrue(s.contains(five)); |
331 |
dl |
1.1 |
} |
332 |
|
|
|
333 |
dl |
1.5 |
/** |
334 |
jsr166 |
1.50 |
* Test keySet().removeAll on empty map |
335 |
|
|
*/ |
336 |
|
|
public void testKeySet_empty_removeAll() { |
337 |
|
|
ConcurrentHashMap<Integer, String> map = new ConcurrentHashMap<>(); |
338 |
|
|
Set<Integer> set = map.keySet(); |
339 |
|
|
set.removeAll(Collections.emptyList()); |
340 |
|
|
assertTrue(map.isEmpty()); |
341 |
|
|
assertTrue(set.isEmpty()); |
342 |
|
|
// following is test for JDK-8163353 |
343 |
|
|
set.removeAll(Collections.emptySet()); |
344 |
|
|
assertTrue(map.isEmpty()); |
345 |
|
|
assertTrue(set.isEmpty()); |
346 |
|
|
} |
347 |
|
|
|
348 |
|
|
/** |
349 |
jsr166 |
1.22 |
* keySet.toArray returns contains all keys |
350 |
dl |
1.13 |
*/ |
351 |
|
|
public void testKeySetToArray() { |
352 |
|
|
ConcurrentHashMap map = map5(); |
353 |
jsr166 |
1.17 |
Set s = map.keySet(); |
354 |
dl |
1.13 |
Object[] ar = s.toArray(); |
355 |
|
|
assertTrue(s.containsAll(Arrays.asList(ar))); |
356 |
jsr166 |
1.17 |
assertEquals(5, ar.length); |
357 |
dl |
1.13 |
ar[0] = m10; |
358 |
|
|
assertFalse(s.containsAll(Arrays.asList(ar))); |
359 |
|
|
} |
360 |
|
|
|
361 |
|
|
/** |
362 |
jsr166 |
1.22 |
* Values.toArray contains all values |
363 |
dl |
1.13 |
*/ |
364 |
|
|
public void testValuesToArray() { |
365 |
|
|
ConcurrentHashMap map = map5(); |
366 |
jsr166 |
1.17 |
Collection v = map.values(); |
367 |
dl |
1.13 |
Object[] ar = v.toArray(); |
368 |
|
|
ArrayList s = new ArrayList(Arrays.asList(ar)); |
369 |
jsr166 |
1.17 |
assertEquals(5, ar.length); |
370 |
|
|
assertTrue(s.contains("A")); |
371 |
|
|
assertTrue(s.contains("B")); |
372 |
|
|
assertTrue(s.contains("C")); |
373 |
|
|
assertTrue(s.contains("D")); |
374 |
|
|
assertTrue(s.contains("E")); |
375 |
dl |
1.13 |
} |
376 |
|
|
|
377 |
|
|
/** |
378 |
jsr166 |
1.22 |
* entrySet.toArray contains all entries |
379 |
dl |
1.13 |
*/ |
380 |
|
|
public void testEntrySetToArray() { |
381 |
|
|
ConcurrentHashMap map = map5(); |
382 |
jsr166 |
1.17 |
Set s = map.entrySet(); |
383 |
dl |
1.13 |
Object[] ar = s.toArray(); |
384 |
|
|
assertEquals(5, ar.length); |
385 |
|
|
for (int i = 0; i < 5; ++i) { |
386 |
|
|
assertTrue(map.containsKey(((Map.Entry)(ar[i])).getKey())); |
387 |
|
|
assertTrue(map.containsValue(((Map.Entry)(ar[i])).getValue())); |
388 |
|
|
} |
389 |
|
|
} |
390 |
|
|
|
391 |
|
|
/** |
392 |
dl |
1.5 |
* values collection contains all values |
393 |
|
|
*/ |
394 |
|
|
public void testValues() { |
395 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
396 |
jsr166 |
1.17 |
Collection s = map.values(); |
397 |
|
|
assertEquals(5, s.size()); |
398 |
|
|
assertTrue(s.contains("A")); |
399 |
|
|
assertTrue(s.contains("B")); |
400 |
|
|
assertTrue(s.contains("C")); |
401 |
|
|
assertTrue(s.contains("D")); |
402 |
|
|
assertTrue(s.contains("E")); |
403 |
dl |
1.1 |
} |
404 |
|
|
|
405 |
dl |
1.5 |
/** |
406 |
|
|
* entrySet contains all pairs |
407 |
|
|
*/ |
408 |
|
|
public void testEntrySet() { |
409 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
410 |
jsr166 |
1.17 |
Set s = map.entrySet(); |
411 |
|
|
assertEquals(5, s.size()); |
412 |
dl |
1.1 |
Iterator it = s.iterator(); |
413 |
|
|
while (it.hasNext()) { |
414 |
|
|
Map.Entry e = (Map.Entry) it.next(); |
415 |
jsr166 |
1.14 |
assertTrue( |
416 |
dl |
1.1 |
(e.getKey().equals(one) && e.getValue().equals("A")) || |
417 |
|
|
(e.getKey().equals(two) && e.getValue().equals("B")) || |
418 |
|
|
(e.getKey().equals(three) && e.getValue().equals("C")) || |
419 |
|
|
(e.getKey().equals(four) && e.getValue().equals("D")) || |
420 |
|
|
(e.getKey().equals(five) && e.getValue().equals("E"))); |
421 |
|
|
} |
422 |
|
|
} |
423 |
|
|
|
424 |
|
|
/** |
425 |
jsr166 |
1.22 |
* putAll adds all key-value pairs from the given map |
426 |
dl |
1.1 |
*/ |
427 |
dl |
1.5 |
public void testPutAll() { |
428 |
dl |
1.1 |
ConcurrentHashMap empty = new ConcurrentHashMap(); |
429 |
|
|
ConcurrentHashMap map = map5(); |
430 |
jsr166 |
1.17 |
empty.putAll(map); |
431 |
|
|
assertEquals(5, empty.size()); |
432 |
|
|
assertTrue(empty.containsKey(one)); |
433 |
|
|
assertTrue(empty.containsKey(two)); |
434 |
|
|
assertTrue(empty.containsKey(three)); |
435 |
|
|
assertTrue(empty.containsKey(four)); |
436 |
|
|
assertTrue(empty.containsKey(five)); |
437 |
dl |
1.1 |
} |
438 |
|
|
|
439 |
|
|
/** |
440 |
jsr166 |
1.22 |
* putIfAbsent works when the given key is not present |
441 |
dl |
1.1 |
*/ |
442 |
dl |
1.5 |
public void testPutIfAbsent() { |
443 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
444 |
jsr166 |
1.17 |
map.putIfAbsent(six, "Z"); |
445 |
dl |
1.7 |
assertTrue(map.containsKey(six)); |
446 |
dl |
1.1 |
} |
447 |
|
|
|
448 |
|
|
/** |
449 |
jsr166 |
1.22 |
* putIfAbsent does not add the pair if the key is already present |
450 |
dl |
1.1 |
*/ |
451 |
dl |
1.5 |
public void testPutIfAbsent2() { |
452 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
453 |
|
|
assertEquals("A", map.putIfAbsent(one, "Z")); |
454 |
|
|
} |
455 |
|
|
|
456 |
|
|
/** |
457 |
jsr166 |
1.22 |
* replace fails when the given key is not present |
458 |
dl |
1.7 |
*/ |
459 |
|
|
public void testReplace() { |
460 |
|
|
ConcurrentHashMap map = map5(); |
461 |
jsr166 |
1.17 |
assertNull(map.replace(six, "Z")); |
462 |
dl |
1.7 |
assertFalse(map.containsKey(six)); |
463 |
|
|
} |
464 |
|
|
|
465 |
|
|
/** |
466 |
jsr166 |
1.22 |
* replace succeeds if the key is already present |
467 |
dl |
1.7 |
*/ |
468 |
|
|
public void testReplace2() { |
469 |
|
|
ConcurrentHashMap map = map5(); |
470 |
dl |
1.8 |
assertNotNull(map.replace(one, "Z")); |
471 |
dl |
1.7 |
assertEquals("Z", map.get(one)); |
472 |
|
|
} |
473 |
|
|
|
474 |
|
|
/** |
475 |
|
|
* replace value fails when the given key not mapped to expected value |
476 |
|
|
*/ |
477 |
|
|
public void testReplaceValue() { |
478 |
|
|
ConcurrentHashMap map = map5(); |
479 |
|
|
assertEquals("A", map.get(one)); |
480 |
jsr166 |
1.17 |
assertFalse(map.replace(one, "Z", "Z")); |
481 |
dl |
1.7 |
assertEquals("A", map.get(one)); |
482 |
|
|
} |
483 |
|
|
|
484 |
|
|
/** |
485 |
|
|
* replace value succeeds when the given key mapped to expected value |
486 |
|
|
*/ |
487 |
|
|
public void testReplaceValue2() { |
488 |
|
|
ConcurrentHashMap map = map5(); |
489 |
|
|
assertEquals("A", map.get(one)); |
490 |
jsr166 |
1.17 |
assertTrue(map.replace(one, "A", "Z")); |
491 |
dl |
1.7 |
assertEquals("Z", map.get(one)); |
492 |
|
|
} |
493 |
|
|
|
494 |
|
|
/** |
495 |
jsr166 |
1.22 |
* remove removes the correct key-value pair from the map |
496 |
dl |
1.1 |
*/ |
497 |
dl |
1.5 |
public void testRemove() { |
498 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
499 |
jsr166 |
1.17 |
map.remove(five); |
500 |
|
|
assertEquals(4, map.size()); |
501 |
|
|
assertFalse(map.containsKey(five)); |
502 |
dl |
1.1 |
} |
503 |
|
|
|
504 |
dl |
1.5 |
/** |
505 |
|
|
* remove(key,value) removes only if pair present |
506 |
|
|
*/ |
507 |
|
|
public void testRemove2() { |
508 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
509 |
jsr166 |
1.17 |
map.remove(five, "E"); |
510 |
|
|
assertEquals(4, map.size()); |
511 |
|
|
assertFalse(map.containsKey(five)); |
512 |
|
|
map.remove(four, "A"); |
513 |
|
|
assertEquals(4, map.size()); |
514 |
|
|
assertTrue(map.containsKey(four)); |
515 |
dl |
1.1 |
} |
516 |
|
|
|
517 |
|
|
/** |
518 |
jsr166 |
1.22 |
* size returns the correct values |
519 |
dl |
1.1 |
*/ |
520 |
dl |
1.5 |
public void testSize() { |
521 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
522 |
|
|
ConcurrentHashMap empty = new ConcurrentHashMap(); |
523 |
jsr166 |
1.17 |
assertEquals(0, empty.size()); |
524 |
|
|
assertEquals(5, map.size()); |
525 |
dl |
1.1 |
} |
526 |
|
|
|
527 |
dl |
1.5 |
/** |
528 |
|
|
* toString contains toString of elements |
529 |
|
|
*/ |
530 |
|
|
public void testToString() { |
531 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
532 |
|
|
String s = map.toString(); |
533 |
|
|
for (int i = 1; i <= 5; ++i) { |
534 |
jsr166 |
1.24 |
assertTrue(s.contains(String.valueOf(i))); |
535 |
dl |
1.1 |
} |
536 |
jsr166 |
1.14 |
} |
537 |
dl |
1.1 |
|
538 |
|
|
// Exception tests |
539 |
jsr166 |
1.14 |
|
540 |
dl |
1.5 |
/** |
541 |
dl |
1.36 |
* Cannot create with only negative capacity |
542 |
dl |
1.5 |
*/ |
543 |
|
|
public void testConstructor1() { |
544 |
|
|
try { |
545 |
dl |
1.36 |
new ConcurrentHashMap(-1); |
546 |
dl |
1.5 |
shouldThrow(); |
547 |
jsr166 |
1.19 |
} catch (IllegalArgumentException success) {} |
548 |
dl |
1.1 |
} |
549 |
|
|
|
550 |
dl |
1.5 |
/** |
551 |
dl |
1.36 |
* Constructor (initialCapacity, loadFactor) throws |
552 |
|
|
* IllegalArgumentException if either argument is negative |
553 |
jsr166 |
1.47 |
*/ |
554 |
dl |
1.5 |
public void testConstructor2() { |
555 |
|
|
try { |
556 |
dl |
1.36 |
new ConcurrentHashMap(-1, .75f); |
557 |
dl |
1.5 |
shouldThrow(); |
558 |
jsr166 |
1.43 |
} catch (IllegalArgumentException success) {} |
559 |
jsr166 |
1.37 |
|
560 |
dl |
1.36 |
try { |
561 |
|
|
new ConcurrentHashMap(16, -1); |
562 |
|
|
shouldThrow(); |
563 |
jsr166 |
1.43 |
} catch (IllegalArgumentException success) {} |
564 |
dl |
1.1 |
} |
565 |
jsr166 |
1.37 |
|
566 |
|
|
/** |
567 |
|
|
* Constructor (initialCapacity, loadFactor, concurrencyLevel) |
568 |
|
|
* throws IllegalArgumentException if any argument is negative |
569 |
|
|
*/ |
570 |
dl |
1.36 |
public void testConstructor3() { |
571 |
jsr166 |
1.37 |
try { |
572 |
|
|
new ConcurrentHashMap(-1, .75f, 1); |
573 |
|
|
shouldThrow(); |
574 |
jsr166 |
1.43 |
} catch (IllegalArgumentException success) {} |
575 |
jsr166 |
1.37 |
|
576 |
|
|
try { |
577 |
|
|
new ConcurrentHashMap(16, -1, 1); |
578 |
|
|
shouldThrow(); |
579 |
jsr166 |
1.43 |
} catch (IllegalArgumentException success) {} |
580 |
jsr166 |
1.37 |
|
581 |
|
|
try { |
582 |
|
|
new ConcurrentHashMap(16, .75f, -1); |
583 |
|
|
shouldThrow(); |
584 |
jsr166 |
1.43 |
} catch (IllegalArgumentException success) {} |
585 |
jsr166 |
1.37 |
} |
586 |
dl |
1.1 |
|
587 |
dl |
1.5 |
/** |
588 |
dl |
1.36 |
* ConcurrentHashMap(map) throws NullPointerException if the given |
589 |
|
|
* map is null |
590 |
dl |
1.5 |
*/ |
591 |
dl |
1.36 |
public void testConstructor4() { |
592 |
dl |
1.5 |
try { |
593 |
dl |
1.36 |
new ConcurrentHashMap(null); |
594 |
dl |
1.5 |
shouldThrow(); |
595 |
jsr166 |
1.43 |
} catch (NullPointerException success) {} |
596 |
dl |
1.36 |
} |
597 |
|
|
|
598 |
|
|
/** |
599 |
|
|
* ConcurrentHashMap(map) creates a new map with the same mappings |
600 |
|
|
* as the given map |
601 |
|
|
*/ |
602 |
|
|
public void testConstructor5() { |
603 |
|
|
ConcurrentHashMap map1 = map5(); |
604 |
|
|
ConcurrentHashMap map2 = new ConcurrentHashMap(map5()); |
605 |
|
|
assertTrue(map2.equals(map1)); |
606 |
|
|
map2.put(one, "F"); |
607 |
|
|
assertFalse(map2.equals(map1)); |
608 |
dl |
1.1 |
} |
609 |
|
|
|
610 |
dl |
1.5 |
/** |
611 |
|
|
* get(null) throws NPE |
612 |
|
|
*/ |
613 |
|
|
public void testGet_NullPointerException() { |
614 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
615 |
dl |
1.5 |
try { |
616 |
dl |
1.1 |
c.get(null); |
617 |
dl |
1.5 |
shouldThrow(); |
618 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
619 |
dl |
1.1 |
} |
620 |
|
|
|
621 |
dl |
1.5 |
/** |
622 |
|
|
* containsKey(null) throws NPE |
623 |
|
|
*/ |
624 |
|
|
public void testContainsKey_NullPointerException() { |
625 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
626 |
dl |
1.5 |
try { |
627 |
dl |
1.1 |
c.containsKey(null); |
628 |
dl |
1.5 |
shouldThrow(); |
629 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
630 |
dl |
1.1 |
} |
631 |
|
|
|
632 |
dl |
1.5 |
/** |
633 |
|
|
* containsValue(null) throws NPE |
634 |
|
|
*/ |
635 |
|
|
public void testContainsValue_NullPointerException() { |
636 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
637 |
dl |
1.5 |
try { |
638 |
dl |
1.1 |
c.containsValue(null); |
639 |
dl |
1.5 |
shouldThrow(); |
640 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
641 |
dl |
1.1 |
} |
642 |
|
|
|
643 |
dl |
1.5 |
/** |
644 |
|
|
* contains(null) throws NPE |
645 |
|
|
*/ |
646 |
|
|
public void testContains_NullPointerException() { |
647 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
648 |
dl |
1.5 |
try { |
649 |
dl |
1.1 |
c.contains(null); |
650 |
dl |
1.5 |
shouldThrow(); |
651 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
652 |
dl |
1.1 |
} |
653 |
|
|
|
654 |
dl |
1.5 |
/** |
655 |
|
|
* put(null,x) throws NPE |
656 |
|
|
*/ |
657 |
|
|
public void testPut1_NullPointerException() { |
658 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
659 |
dl |
1.5 |
try { |
660 |
dl |
1.1 |
c.put(null, "whatever"); |
661 |
dl |
1.5 |
shouldThrow(); |
662 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
663 |
dl |
1.1 |
} |
664 |
|
|
|
665 |
dl |
1.5 |
/** |
666 |
|
|
* put(x, null) throws NPE |
667 |
|
|
*/ |
668 |
|
|
public void testPut2_NullPointerException() { |
669 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
670 |
dl |
1.5 |
try { |
671 |
dl |
1.1 |
c.put("whatever", null); |
672 |
dl |
1.5 |
shouldThrow(); |
673 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
674 |
dl |
1.1 |
} |
675 |
|
|
|
676 |
dl |
1.5 |
/** |
677 |
|
|
* putIfAbsent(null, x) throws NPE |
678 |
|
|
*/ |
679 |
|
|
public void testPutIfAbsent1_NullPointerException() { |
680 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
681 |
dl |
1.5 |
try { |
682 |
dl |
1.1 |
c.putIfAbsent(null, "whatever"); |
683 |
dl |
1.5 |
shouldThrow(); |
684 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
685 |
dl |
1.1 |
} |
686 |
|
|
|
687 |
dl |
1.5 |
/** |
688 |
dl |
1.7 |
* replace(null, x) throws NPE |
689 |
|
|
*/ |
690 |
|
|
public void testReplace_NullPointerException() { |
691 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
692 |
dl |
1.7 |
try { |
693 |
|
|
c.replace(null, "whatever"); |
694 |
|
|
shouldThrow(); |
695 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
696 |
dl |
1.7 |
} |
697 |
|
|
|
698 |
|
|
/** |
699 |
|
|
* replace(null, x, y) throws NPE |
700 |
|
|
*/ |
701 |
|
|
public void testReplaceValue_NullPointerException() { |
702 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
703 |
dl |
1.7 |
try { |
704 |
|
|
c.replace(null, one, "whatever"); |
705 |
|
|
shouldThrow(); |
706 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
707 |
dl |
1.7 |
} |
708 |
|
|
|
709 |
|
|
/** |
710 |
dl |
1.5 |
* putIfAbsent(x, null) throws NPE |
711 |
|
|
*/ |
712 |
|
|
public void testPutIfAbsent2_NullPointerException() { |
713 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
714 |
dl |
1.5 |
try { |
715 |
dl |
1.1 |
c.putIfAbsent("whatever", null); |
716 |
dl |
1.7 |
shouldThrow(); |
717 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
718 |
dl |
1.7 |
} |
719 |
|
|
|
720 |
|
|
/** |
721 |
|
|
* replace(x, null) throws NPE |
722 |
|
|
*/ |
723 |
|
|
public void testReplace2_NullPointerException() { |
724 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
725 |
dl |
1.7 |
try { |
726 |
|
|
c.replace("whatever", null); |
727 |
|
|
shouldThrow(); |
728 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
729 |
dl |
1.7 |
} |
730 |
|
|
|
731 |
|
|
/** |
732 |
|
|
* replace(x, null, y) throws NPE |
733 |
|
|
*/ |
734 |
|
|
public void testReplaceValue2_NullPointerException() { |
735 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
736 |
dl |
1.7 |
try { |
737 |
|
|
c.replace("whatever", null, "A"); |
738 |
|
|
shouldThrow(); |
739 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
740 |
dl |
1.7 |
} |
741 |
|
|
|
742 |
|
|
/** |
743 |
|
|
* replace(x, y, null) throws NPE |
744 |
|
|
*/ |
745 |
|
|
public void testReplaceValue3_NullPointerException() { |
746 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
747 |
dl |
1.7 |
try { |
748 |
|
|
c.replace("whatever", one, null); |
749 |
dl |
1.5 |
shouldThrow(); |
750 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
751 |
dl |
1.1 |
} |
752 |
|
|
|
753 |
dl |
1.5 |
/** |
754 |
|
|
* remove(null) throws NPE |
755 |
|
|
*/ |
756 |
|
|
public void testRemove1_NullPointerException() { |
757 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
758 |
|
|
c.put("sadsdf", "asdads"); |
759 |
dl |
1.5 |
try { |
760 |
dl |
1.1 |
c.remove(null); |
761 |
dl |
1.5 |
shouldThrow(); |
762 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
763 |
dl |
1.1 |
} |
764 |
|
|
|
765 |
dl |
1.5 |
/** |
766 |
|
|
* remove(null, x) throws NPE |
767 |
|
|
*/ |
768 |
|
|
public void testRemove2_NullPointerException() { |
769 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
770 |
|
|
c.put("sadsdf", "asdads"); |
771 |
dl |
1.5 |
try { |
772 |
dl |
1.1 |
c.remove(null, "whatever"); |
773 |
dl |
1.5 |
shouldThrow(); |
774 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
775 |
dl |
1.1 |
} |
776 |
dl |
1.2 |
|
777 |
dl |
1.5 |
/** |
778 |
dl |
1.12 |
* remove(x, null) returns false |
779 |
|
|
*/ |
780 |
|
|
public void testRemove3() { |
781 |
jsr166 |
1.19 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
782 |
|
|
c.put("sadsdf", "asdads"); |
783 |
|
|
assertFalse(c.remove("sadsdf", null)); |
784 |
dl |
1.12 |
} |
785 |
|
|
|
786 |
|
|
/** |
787 |
dl |
1.5 |
* A deserialized map equals original |
788 |
|
|
*/ |
789 |
jsr166 |
1.18 |
public void testSerialization() throws Exception { |
790 |
jsr166 |
1.25 |
Map x = map5(); |
791 |
|
|
Map y = serialClone(x); |
792 |
dl |
1.2 |
|
793 |
jsr166 |
1.31 |
assertNotSame(x, y); |
794 |
jsr166 |
1.25 |
assertEquals(x.size(), y.size()); |
795 |
|
|
assertEquals(x, y); |
796 |
|
|
assertEquals(y, x); |
797 |
dl |
1.2 |
} |
798 |
dl |
1.6 |
|
799 |
|
|
/** |
800 |
|
|
* SetValue of an EntrySet entry sets value in the map. |
801 |
|
|
*/ |
802 |
|
|
public void testSetValueWriteThrough() { |
803 |
jsr166 |
1.14 |
// Adapted from a bug report by Eric Zoerner |
804 |
dl |
1.6 |
ConcurrentHashMap map = new ConcurrentHashMap(2, 5.0f, 1); |
805 |
|
|
assertTrue(map.isEmpty()); |
806 |
|
|
for (int i = 0; i < 20; i++) |
807 |
|
|
map.put(new Integer(i), new Integer(i)); |
808 |
|
|
assertFalse(map.isEmpty()); |
809 |
|
|
Map.Entry entry1 = (Map.Entry)map.entrySet().iterator().next(); |
810 |
dl |
1.29 |
// Unless it happens to be first (in which case remainder of |
811 |
|
|
// test is skipped), remove a possibly-colliding key from map |
812 |
|
|
// which, under some implementations, may cause entry1 to be |
813 |
|
|
// cloned in map |
814 |
|
|
if (!entry1.getKey().equals(new Integer(16))) { |
815 |
|
|
map.remove(new Integer(16)); |
816 |
|
|
entry1.setValue("XYZ"); |
817 |
|
|
assertTrue(map.containsValue("XYZ")); // fails if write-through broken |
818 |
|
|
} |
819 |
dl |
1.6 |
} |
820 |
jsr166 |
1.14 |
|
821 |
jsr166 |
1.48 |
/** |
822 |
|
|
* Tests performance of removeAll when the other collection is much smaller. |
823 |
|
|
* ant -Djsr166.tckTestClass=ConcurrentHashMapTest -Djsr166.methodFilter=testRemoveAll_performance -Djsr166.expensiveTests=true tck |
824 |
|
|
*/ |
825 |
|
|
public void testRemoveAll_performance() { |
826 |
jsr166 |
1.49 |
final int mapSize = expensiveTests ? 1_000_000 : 100; |
827 |
|
|
final int iterations = expensiveTests ? 500 : 2; |
828 |
|
|
final ConcurrentHashMap<Integer, Integer> map = new ConcurrentHashMap<>(); |
829 |
jsr166 |
1.48 |
for (int i = 0; i < mapSize; i++) |
830 |
|
|
map.put(i, i); |
831 |
|
|
Set<Integer> keySet = map.keySet(); |
832 |
|
|
Collection<Integer> removeMe = Arrays.asList(new Integer[] { -99, -86 }); |
833 |
|
|
for (int i = 0; i < iterations; i++) |
834 |
|
|
assertFalse(keySet.removeAll(removeMe)); |
835 |
|
|
assertEquals(mapSize, map.size()); |
836 |
|
|
} |
837 |
jsr166 |
1.49 |
|
838 |
dl |
1.1 |
} |