1 |
dl |
1.1 |
/* |
2 |
jsr166 |
1.56 |
* 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 |
jsr166 |
1.23 |
* http://creativecommons.org/publicdomain/zero/1.0/ |
6 |
jsr166 |
1.14 |
* Other contributors include Andrew Wright, Jeffrey Hayes, |
7 |
|
|
* Pat Fisher, Mike Judd. |
8 |
dl |
1.1 |
*/ |
9 |
|
|
|
10 |
jsr166 |
1.40 |
import java.util.ArrayList; |
11 |
|
|
import java.util.Arrays; |
12 |
|
|
import java.util.Collection; |
13 |
|
|
import java.util.Collections; |
14 |
|
|
import java.util.Enumeration; |
15 |
|
|
import java.util.Iterator; |
16 |
|
|
import java.util.Map; |
17 |
|
|
import java.util.Random; |
18 |
|
|
import java.util.Set; |
19 |
jsr166 |
1.25 |
import java.util.concurrent.ConcurrentHashMap; |
20 |
dl |
1.1 |
|
21 |
jsr166 |
1.40 |
import junit.framework.Test; |
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 |
1.56 |
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 |
|
|
public Object makeValue(int i) { return i; } |
33 |
|
|
public boolean isConcurrent() { return true; } |
34 |
|
|
public boolean permitsNullKeys() { return false; } |
35 |
|
|
public boolean permitsNullValues() { return false; } |
36 |
|
|
public boolean supportsSetValue() { return true; } |
37 |
|
|
} |
38 |
|
|
return newTestSuite( |
39 |
|
|
ConcurrentHashMapTest.class, |
40 |
|
|
MapTest.testSuite(new Implementation())); |
41 |
dl |
1.1 |
} |
42 |
|
|
|
43 |
dl |
1.5 |
/** |
44 |
jsr166 |
1.28 |
* Returns a new map from Integers 1-5 to Strings "A"-"E". |
45 |
dl |
1.5 |
*/ |
46 |
dl |
1.36 |
private static ConcurrentHashMap<Integer, String> map5() { |
47 |
jsr166 |
1.52 |
ConcurrentHashMap<Integer, String> map = new ConcurrentHashMap<>(5); |
48 |
dl |
1.1 |
assertTrue(map.isEmpty()); |
49 |
jsr166 |
1.17 |
map.put(one, "A"); |
50 |
|
|
map.put(two, "B"); |
51 |
|
|
map.put(three, "C"); |
52 |
|
|
map.put(four, "D"); |
53 |
|
|
map.put(five, "E"); |
54 |
dl |
1.1 |
assertFalse(map.isEmpty()); |
55 |
|
|
assertEquals(5, map.size()); |
56 |
jsr166 |
1.17 |
return map; |
57 |
dl |
1.1 |
} |
58 |
|
|
|
59 |
jsr166 |
1.33 |
/** Re-implement Integer.compare for old java versions */ |
60 |
jsr166 |
1.46 |
static int compare(int x, int y) { |
61 |
|
|
return (x < y) ? -1 : (x > y) ? 1 : 0; |
62 |
|
|
} |
63 |
jsr166 |
1.33 |
|
64 |
jsr166 |
1.30 |
// classes for testing Comparable fallbacks |
65 |
|
|
static class BI implements Comparable<BI> { |
66 |
|
|
private final int value; |
67 |
|
|
BI(int value) { this.value = value; } |
68 |
|
|
public int compareTo(BI other) { |
69 |
jsr166 |
1.33 |
return compare(value, other.value); |
70 |
jsr166 |
1.30 |
} |
71 |
|
|
public boolean equals(Object x) { |
72 |
|
|
return (x instanceof BI) && ((BI)x).value == value; |
73 |
|
|
} |
74 |
|
|
public int hashCode() { return 42; } |
75 |
|
|
} |
76 |
|
|
static class CI extends BI { CI(int value) { super(value); } } |
77 |
|
|
static class DI extends BI { DI(int value) { super(value); } } |
78 |
|
|
|
79 |
|
|
static class BS implements Comparable<BS> { |
80 |
|
|
private final String value; |
81 |
|
|
BS(String value) { this.value = value; } |
82 |
|
|
public int compareTo(BS other) { |
83 |
|
|
return value.compareTo(other.value); |
84 |
|
|
} |
85 |
|
|
public boolean equals(Object x) { |
86 |
|
|
return (x instanceof BS) && value.equals(((BS)x).value); |
87 |
|
|
} |
88 |
|
|
public int hashCode() { return 42; } |
89 |
|
|
} |
90 |
|
|
|
91 |
|
|
static class LexicographicList<E extends Comparable<E>> extends ArrayList<E> |
92 |
|
|
implements Comparable<LexicographicList<E>> { |
93 |
|
|
LexicographicList(Collection<E> c) { super(c); } |
94 |
|
|
LexicographicList(E e) { super(Collections.singleton(e)); } |
95 |
|
|
public int compareTo(LexicographicList<E> other) { |
96 |
|
|
int common = Math.min(size(), other.size()); |
97 |
|
|
int r = 0; |
98 |
|
|
for (int i = 0; i < common; i++) { |
99 |
|
|
if ((r = get(i).compareTo(other.get(i))) != 0) |
100 |
|
|
break; |
101 |
|
|
} |
102 |
|
|
if (r == 0) |
103 |
jsr166 |
1.33 |
r = compare(size(), other.size()); |
104 |
jsr166 |
1.30 |
return r; |
105 |
|
|
} |
106 |
|
|
private static final long serialVersionUID = 0; |
107 |
|
|
} |
108 |
|
|
|
109 |
dl |
1.34 |
static class CollidingObject { |
110 |
|
|
final String value; |
111 |
|
|
CollidingObject(final String value) { this.value = value; } |
112 |
|
|
public int hashCode() { return this.value.hashCode() & 1; } |
113 |
|
|
public boolean equals(final Object obj) { |
114 |
|
|
return (obj instanceof CollidingObject) && ((CollidingObject)obj).value.equals(value); |
115 |
|
|
} |
116 |
|
|
} |
117 |
|
|
|
118 |
|
|
static class ComparableCollidingObject extends CollidingObject implements Comparable<ComparableCollidingObject> { |
119 |
|
|
ComparableCollidingObject(final String value) { super(value); } |
120 |
|
|
public int compareTo(final ComparableCollidingObject o) { |
121 |
|
|
return value.compareTo(o.value); |
122 |
|
|
} |
123 |
|
|
} |
124 |
|
|
|
125 |
jsr166 |
1.30 |
/** |
126 |
|
|
* Inserted elements that are subclasses of the same Comparable |
127 |
|
|
* class are found. |
128 |
|
|
*/ |
129 |
|
|
public void testComparableFamily() { |
130 |
jsr166 |
1.39 |
int size = 500; // makes measured test run time -> 60ms |
131 |
jsr166 |
1.57 |
ConcurrentHashMap<BI, Boolean> m = new ConcurrentHashMap<>(); |
132 |
jsr166 |
1.39 |
for (int i = 0; i < size; i++) { |
133 |
jsr166 |
1.54 |
assertNull(m.put(new CI(i), true)); |
134 |
jsr166 |
1.30 |
} |
135 |
jsr166 |
1.39 |
for (int i = 0; i < size; i++) { |
136 |
jsr166 |
1.30 |
assertTrue(m.containsKey(new CI(i))); |
137 |
|
|
assertTrue(m.containsKey(new DI(i))); |
138 |
|
|
} |
139 |
|
|
} |
140 |
|
|
|
141 |
|
|
/** |
142 |
|
|
* Elements of classes with erased generic type parameters based |
143 |
|
|
* on Comparable can be inserted and found. |
144 |
|
|
*/ |
145 |
|
|
public void testGenericComparable() { |
146 |
jsr166 |
1.39 |
int size = 120; // makes measured test run time -> 60ms |
147 |
jsr166 |
1.57 |
ConcurrentHashMap<Object, Boolean> m = new ConcurrentHashMap<>(); |
148 |
jsr166 |
1.39 |
for (int i = 0; i < size; i++) { |
149 |
jsr166 |
1.30 |
BI bi = new BI(i); |
150 |
|
|
BS bs = new BS(String.valueOf(i)); |
151 |
jsr166 |
1.57 |
LexicographicList<BI> bis = new LexicographicList<>(bi); |
152 |
|
|
LexicographicList<BS> bss = new LexicographicList<>(bs); |
153 |
jsr166 |
1.54 |
assertNull(m.putIfAbsent(bis, true)); |
154 |
jsr166 |
1.30 |
assertTrue(m.containsKey(bis)); |
155 |
|
|
if (m.putIfAbsent(bss, true) == null) |
156 |
|
|
assertTrue(m.containsKey(bss)); |
157 |
|
|
assertTrue(m.containsKey(bis)); |
158 |
|
|
} |
159 |
jsr166 |
1.39 |
for (int i = 0; i < size; i++) { |
160 |
|
|
assertTrue(m.containsKey(Collections.singletonList(new BI(i)))); |
161 |
jsr166 |
1.30 |
} |
162 |
|
|
} |
163 |
|
|
|
164 |
|
|
/** |
165 |
|
|
* Elements of non-comparable classes equal to those of classes |
166 |
|
|
* with erased generic type parameters based on Comparable can be |
167 |
|
|
* inserted and found. |
168 |
|
|
*/ |
169 |
|
|
public void testGenericComparable2() { |
170 |
jsr166 |
1.39 |
int size = 500; // makes measured test run time -> 60ms |
171 |
jsr166 |
1.57 |
ConcurrentHashMap<Object, Boolean> m = new ConcurrentHashMap<>(); |
172 |
jsr166 |
1.39 |
for (int i = 0; i < size; i++) { |
173 |
|
|
m.put(Collections.singletonList(new BI(i)), true); |
174 |
jsr166 |
1.30 |
} |
175 |
|
|
|
176 |
jsr166 |
1.39 |
for (int i = 0; i < size; i++) { |
177 |
jsr166 |
1.57 |
LexicographicList<BI> bis = new LexicographicList<>(new BI(i)); |
178 |
jsr166 |
1.30 |
assertTrue(m.containsKey(bis)); |
179 |
|
|
} |
180 |
|
|
} |
181 |
|
|
|
182 |
dl |
1.1 |
/** |
183 |
dl |
1.34 |
* Mixtures of instances of comparable and non-comparable classes |
184 |
|
|
* can be inserted and found. |
185 |
|
|
*/ |
186 |
|
|
public void testMixedComparable() { |
187 |
jsr166 |
1.38 |
int size = 1200; // makes measured test run time -> 35ms |
188 |
jsr166 |
1.57 |
ConcurrentHashMap<Object, Object> map = new ConcurrentHashMap<>(); |
189 |
jsr166 |
1.38 |
Random rng = new Random(); |
190 |
jsr166 |
1.35 |
for (int i = 0; i < size; i++) { |
191 |
dl |
1.34 |
Object x; |
192 |
jsr166 |
1.35 |
switch (rng.nextInt(4)) { |
193 |
dl |
1.34 |
case 0: |
194 |
|
|
x = new Object(); |
195 |
|
|
break; |
196 |
|
|
case 1: |
197 |
|
|
x = new CollidingObject(Integer.toString(i)); |
198 |
|
|
break; |
199 |
|
|
default: |
200 |
|
|
x = new ComparableCollidingObject(Integer.toString(i)); |
201 |
|
|
} |
202 |
|
|
assertNull(map.put(x, x)); |
203 |
|
|
} |
204 |
|
|
int count = 0; |
205 |
|
|
for (Object k : map.keySet()) { |
206 |
|
|
assertEquals(map.get(k), k); |
207 |
|
|
++count; |
208 |
|
|
} |
209 |
|
|
assertEquals(count, size); |
210 |
|
|
assertEquals(map.size(), size); |
211 |
|
|
for (Object k : map.keySet()) { |
212 |
|
|
assertEquals(map.put(k, k), k); |
213 |
|
|
} |
214 |
|
|
} |
215 |
|
|
|
216 |
|
|
/** |
217 |
jsr166 |
1.22 |
* clear removes all pairs |
218 |
dl |
1.1 |
*/ |
219 |
dl |
1.5 |
public void testClear() { |
220 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
221 |
jsr166 |
1.17 |
map.clear(); |
222 |
jsr166 |
1.26 |
assertEquals(0, map.size()); |
223 |
dl |
1.1 |
} |
224 |
|
|
|
225 |
|
|
/** |
226 |
jsr166 |
1.22 |
* Maps with same contents are equal |
227 |
dl |
1.5 |
*/ |
228 |
|
|
public void testEquals() { |
229 |
|
|
ConcurrentHashMap map1 = map5(); |
230 |
|
|
ConcurrentHashMap map2 = map5(); |
231 |
|
|
assertEquals(map1, map2); |
232 |
|
|
assertEquals(map2, map1); |
233 |
jsr166 |
1.17 |
map1.clear(); |
234 |
dl |
1.5 |
assertFalse(map1.equals(map2)); |
235 |
|
|
assertFalse(map2.equals(map1)); |
236 |
|
|
} |
237 |
|
|
|
238 |
dl |
1.36 |
/** |
239 |
jsr166 |
1.37 |
* hashCode() equals sum of each key.hashCode ^ value.hashCode |
240 |
|
|
*/ |
241 |
dl |
1.36 |
public void testHashCode() { |
242 |
|
|
ConcurrentHashMap<Integer,String> map = map5(); |
243 |
|
|
int sum = 0; |
244 |
|
|
for (Map.Entry<Integer,String> e : map.entrySet()) |
245 |
|
|
sum += e.getKey().hashCode() ^ e.getValue().hashCode(); |
246 |
|
|
assertEquals(sum, map.hashCode()); |
247 |
|
|
} |
248 |
|
|
|
249 |
dl |
1.5 |
/** |
250 |
jsr166 |
1.22 |
* contains returns true for contained value |
251 |
dl |
1.1 |
*/ |
252 |
dl |
1.5 |
public void testContains() { |
253 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
254 |
jsr166 |
1.17 |
assertTrue(map.contains("A")); |
255 |
dl |
1.1 |
assertFalse(map.contains("Z")); |
256 |
|
|
} |
257 |
jsr166 |
1.14 |
|
258 |
dl |
1.1 |
/** |
259 |
jsr166 |
1.22 |
* containsKey returns true for contained key |
260 |
dl |
1.1 |
*/ |
261 |
dl |
1.5 |
public void testContainsKey() { |
262 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
263 |
jsr166 |
1.17 |
assertTrue(map.containsKey(one)); |
264 |
dl |
1.5 |
assertFalse(map.containsKey(zero)); |
265 |
dl |
1.1 |
} |
266 |
|
|
|
267 |
|
|
/** |
268 |
jsr166 |
1.22 |
* containsValue returns true for held values |
269 |
dl |
1.1 |
*/ |
270 |
dl |
1.5 |
public void testContainsValue() { |
271 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
272 |
jsr166 |
1.17 |
assertTrue(map.containsValue("A")); |
273 |
dl |
1.11 |
assertFalse(map.containsValue("Z")); |
274 |
dl |
1.1 |
} |
275 |
|
|
|
276 |
|
|
/** |
277 |
jsr166 |
1.22 |
* enumeration returns an enumeration containing the correct |
278 |
|
|
* elements |
279 |
dl |
1.1 |
*/ |
280 |
dl |
1.5 |
public void testEnumeration() { |
281 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
282 |
jsr166 |
1.17 |
Enumeration e = map.elements(); |
283 |
|
|
int count = 0; |
284 |
|
|
while (e.hasMoreElements()) { |
285 |
|
|
count++; |
286 |
|
|
e.nextElement(); |
287 |
|
|
} |
288 |
|
|
assertEquals(5, count); |
289 |
dl |
1.4 |
} |
290 |
|
|
|
291 |
|
|
/** |
292 |
jsr166 |
1.22 |
* get returns the correct element at the given key, |
293 |
|
|
* or null if not present |
294 |
dl |
1.1 |
*/ |
295 |
dl |
1.5 |
public void testGet() { |
296 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
297 |
jsr166 |
1.17 |
assertEquals("A", (String)map.get(one)); |
298 |
dl |
1.1 |
ConcurrentHashMap empty = new ConcurrentHashMap(); |
299 |
dl |
1.5 |
assertNull(map.get("anything")); |
300 |
jsr166 |
1.42 |
assertNull(empty.get("anything")); |
301 |
dl |
1.1 |
} |
302 |
|
|
|
303 |
|
|
/** |
304 |
jsr166 |
1.22 |
* isEmpty is true of empty map and false for non-empty |
305 |
dl |
1.1 |
*/ |
306 |
dl |
1.5 |
public void testIsEmpty() { |
307 |
dl |
1.1 |
ConcurrentHashMap empty = new ConcurrentHashMap(); |
308 |
|
|
ConcurrentHashMap map = map5(); |
309 |
jsr166 |
1.17 |
assertTrue(empty.isEmpty()); |
310 |
dl |
1.1 |
assertFalse(map.isEmpty()); |
311 |
|
|
} |
312 |
|
|
|
313 |
|
|
/** |
314 |
jsr166 |
1.22 |
* keys returns an enumeration containing all the keys from the map |
315 |
dl |
1.1 |
*/ |
316 |
dl |
1.5 |
public void testKeys() { |
317 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
318 |
jsr166 |
1.17 |
Enumeration e = map.keys(); |
319 |
|
|
int count = 0; |
320 |
|
|
while (e.hasMoreElements()) { |
321 |
|
|
count++; |
322 |
|
|
e.nextElement(); |
323 |
|
|
} |
324 |
|
|
assertEquals(5, count); |
325 |
dl |
1.1 |
} |
326 |
|
|
|
327 |
|
|
/** |
328 |
jsr166 |
1.22 |
* keySet returns a Set containing all the keys |
329 |
dl |
1.1 |
*/ |
330 |
dl |
1.5 |
public void testKeySet() { |
331 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
332 |
jsr166 |
1.17 |
Set s = map.keySet(); |
333 |
|
|
assertEquals(5, s.size()); |
334 |
|
|
assertTrue(s.contains(one)); |
335 |
|
|
assertTrue(s.contains(two)); |
336 |
|
|
assertTrue(s.contains(three)); |
337 |
|
|
assertTrue(s.contains(four)); |
338 |
|
|
assertTrue(s.contains(five)); |
339 |
dl |
1.1 |
} |
340 |
|
|
|
341 |
dl |
1.5 |
/** |
342 |
jsr166 |
1.50 |
* Test keySet().removeAll on empty map |
343 |
|
|
*/ |
344 |
|
|
public void testKeySet_empty_removeAll() { |
345 |
|
|
ConcurrentHashMap<Integer, String> map = new ConcurrentHashMap<>(); |
346 |
|
|
Set<Integer> set = map.keySet(); |
347 |
|
|
set.removeAll(Collections.emptyList()); |
348 |
|
|
assertTrue(map.isEmpty()); |
349 |
|
|
assertTrue(set.isEmpty()); |
350 |
|
|
// following is test for JDK-8163353 |
351 |
|
|
set.removeAll(Collections.emptySet()); |
352 |
|
|
assertTrue(map.isEmpty()); |
353 |
|
|
assertTrue(set.isEmpty()); |
354 |
|
|
} |
355 |
|
|
|
356 |
|
|
/** |
357 |
jsr166 |
1.22 |
* keySet.toArray returns contains all keys |
358 |
dl |
1.13 |
*/ |
359 |
|
|
public void testKeySetToArray() { |
360 |
|
|
ConcurrentHashMap map = map5(); |
361 |
jsr166 |
1.17 |
Set s = map.keySet(); |
362 |
dl |
1.13 |
Object[] ar = s.toArray(); |
363 |
|
|
assertTrue(s.containsAll(Arrays.asList(ar))); |
364 |
jsr166 |
1.17 |
assertEquals(5, ar.length); |
365 |
dl |
1.13 |
ar[0] = m10; |
366 |
|
|
assertFalse(s.containsAll(Arrays.asList(ar))); |
367 |
|
|
} |
368 |
|
|
|
369 |
|
|
/** |
370 |
jsr166 |
1.22 |
* Values.toArray contains all values |
371 |
dl |
1.13 |
*/ |
372 |
|
|
public void testValuesToArray() { |
373 |
|
|
ConcurrentHashMap map = map5(); |
374 |
jsr166 |
1.17 |
Collection v = map.values(); |
375 |
dl |
1.13 |
Object[] ar = v.toArray(); |
376 |
|
|
ArrayList s = new ArrayList(Arrays.asList(ar)); |
377 |
jsr166 |
1.17 |
assertEquals(5, ar.length); |
378 |
|
|
assertTrue(s.contains("A")); |
379 |
|
|
assertTrue(s.contains("B")); |
380 |
|
|
assertTrue(s.contains("C")); |
381 |
|
|
assertTrue(s.contains("D")); |
382 |
|
|
assertTrue(s.contains("E")); |
383 |
dl |
1.13 |
} |
384 |
|
|
|
385 |
|
|
/** |
386 |
jsr166 |
1.22 |
* entrySet.toArray contains all entries |
387 |
dl |
1.13 |
*/ |
388 |
|
|
public void testEntrySetToArray() { |
389 |
|
|
ConcurrentHashMap map = map5(); |
390 |
jsr166 |
1.17 |
Set s = map.entrySet(); |
391 |
dl |
1.13 |
Object[] ar = s.toArray(); |
392 |
|
|
assertEquals(5, ar.length); |
393 |
|
|
for (int i = 0; i < 5; ++i) { |
394 |
|
|
assertTrue(map.containsKey(((Map.Entry)(ar[i])).getKey())); |
395 |
|
|
assertTrue(map.containsValue(((Map.Entry)(ar[i])).getValue())); |
396 |
|
|
} |
397 |
|
|
} |
398 |
|
|
|
399 |
|
|
/** |
400 |
dl |
1.5 |
* values collection contains all values |
401 |
|
|
*/ |
402 |
|
|
public void testValues() { |
403 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
404 |
jsr166 |
1.17 |
Collection s = map.values(); |
405 |
|
|
assertEquals(5, s.size()); |
406 |
|
|
assertTrue(s.contains("A")); |
407 |
|
|
assertTrue(s.contains("B")); |
408 |
|
|
assertTrue(s.contains("C")); |
409 |
|
|
assertTrue(s.contains("D")); |
410 |
|
|
assertTrue(s.contains("E")); |
411 |
dl |
1.1 |
} |
412 |
|
|
|
413 |
dl |
1.5 |
/** |
414 |
|
|
* entrySet contains all pairs |
415 |
|
|
*/ |
416 |
|
|
public void testEntrySet() { |
417 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
418 |
jsr166 |
1.17 |
Set s = map.entrySet(); |
419 |
|
|
assertEquals(5, s.size()); |
420 |
dl |
1.1 |
Iterator it = s.iterator(); |
421 |
|
|
while (it.hasNext()) { |
422 |
|
|
Map.Entry e = (Map.Entry) it.next(); |
423 |
jsr166 |
1.14 |
assertTrue( |
424 |
dl |
1.1 |
(e.getKey().equals(one) && e.getValue().equals("A")) || |
425 |
|
|
(e.getKey().equals(two) && e.getValue().equals("B")) || |
426 |
|
|
(e.getKey().equals(three) && e.getValue().equals("C")) || |
427 |
|
|
(e.getKey().equals(four) && e.getValue().equals("D")) || |
428 |
|
|
(e.getKey().equals(five) && e.getValue().equals("E"))); |
429 |
|
|
} |
430 |
|
|
} |
431 |
|
|
|
432 |
|
|
/** |
433 |
jsr166 |
1.22 |
* putAll adds all key-value pairs from the given map |
434 |
dl |
1.1 |
*/ |
435 |
dl |
1.5 |
public void testPutAll() { |
436 |
dl |
1.1 |
ConcurrentHashMap empty = new ConcurrentHashMap(); |
437 |
|
|
ConcurrentHashMap map = map5(); |
438 |
jsr166 |
1.17 |
empty.putAll(map); |
439 |
|
|
assertEquals(5, empty.size()); |
440 |
|
|
assertTrue(empty.containsKey(one)); |
441 |
|
|
assertTrue(empty.containsKey(two)); |
442 |
|
|
assertTrue(empty.containsKey(three)); |
443 |
|
|
assertTrue(empty.containsKey(four)); |
444 |
|
|
assertTrue(empty.containsKey(five)); |
445 |
dl |
1.1 |
} |
446 |
|
|
|
447 |
|
|
/** |
448 |
jsr166 |
1.22 |
* putIfAbsent works when the given key is not present |
449 |
dl |
1.1 |
*/ |
450 |
dl |
1.5 |
public void testPutIfAbsent() { |
451 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
452 |
jsr166 |
1.17 |
map.putIfAbsent(six, "Z"); |
453 |
dl |
1.7 |
assertTrue(map.containsKey(six)); |
454 |
dl |
1.1 |
} |
455 |
|
|
|
456 |
|
|
/** |
457 |
jsr166 |
1.22 |
* putIfAbsent does not add the pair if the key is already present |
458 |
dl |
1.1 |
*/ |
459 |
dl |
1.5 |
public void testPutIfAbsent2() { |
460 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
461 |
|
|
assertEquals("A", map.putIfAbsent(one, "Z")); |
462 |
|
|
} |
463 |
|
|
|
464 |
|
|
/** |
465 |
jsr166 |
1.22 |
* replace fails when the given key is not present |
466 |
dl |
1.7 |
*/ |
467 |
|
|
public void testReplace() { |
468 |
|
|
ConcurrentHashMap map = map5(); |
469 |
jsr166 |
1.17 |
assertNull(map.replace(six, "Z")); |
470 |
dl |
1.7 |
assertFalse(map.containsKey(six)); |
471 |
|
|
} |
472 |
|
|
|
473 |
|
|
/** |
474 |
jsr166 |
1.22 |
* replace succeeds if the key is already present |
475 |
dl |
1.7 |
*/ |
476 |
|
|
public void testReplace2() { |
477 |
|
|
ConcurrentHashMap map = map5(); |
478 |
dl |
1.8 |
assertNotNull(map.replace(one, "Z")); |
479 |
dl |
1.7 |
assertEquals("Z", map.get(one)); |
480 |
|
|
} |
481 |
|
|
|
482 |
|
|
/** |
483 |
|
|
* replace value fails when the given key not mapped to expected value |
484 |
|
|
*/ |
485 |
|
|
public void testReplaceValue() { |
486 |
|
|
ConcurrentHashMap map = map5(); |
487 |
|
|
assertEquals("A", map.get(one)); |
488 |
jsr166 |
1.17 |
assertFalse(map.replace(one, "Z", "Z")); |
489 |
dl |
1.7 |
assertEquals("A", map.get(one)); |
490 |
|
|
} |
491 |
|
|
|
492 |
|
|
/** |
493 |
|
|
* replace value succeeds when the given key mapped to expected value |
494 |
|
|
*/ |
495 |
|
|
public void testReplaceValue2() { |
496 |
|
|
ConcurrentHashMap map = map5(); |
497 |
|
|
assertEquals("A", map.get(one)); |
498 |
jsr166 |
1.17 |
assertTrue(map.replace(one, "A", "Z")); |
499 |
dl |
1.7 |
assertEquals("Z", map.get(one)); |
500 |
|
|
} |
501 |
|
|
|
502 |
|
|
/** |
503 |
jsr166 |
1.22 |
* remove removes the correct key-value pair from the map |
504 |
dl |
1.1 |
*/ |
505 |
dl |
1.5 |
public void testRemove() { |
506 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
507 |
jsr166 |
1.17 |
map.remove(five); |
508 |
|
|
assertEquals(4, map.size()); |
509 |
|
|
assertFalse(map.containsKey(five)); |
510 |
dl |
1.1 |
} |
511 |
|
|
|
512 |
dl |
1.5 |
/** |
513 |
|
|
* remove(key,value) removes only if pair present |
514 |
|
|
*/ |
515 |
|
|
public void testRemove2() { |
516 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
517 |
jsr166 |
1.17 |
map.remove(five, "E"); |
518 |
|
|
assertEquals(4, map.size()); |
519 |
|
|
assertFalse(map.containsKey(five)); |
520 |
|
|
map.remove(four, "A"); |
521 |
|
|
assertEquals(4, map.size()); |
522 |
|
|
assertTrue(map.containsKey(four)); |
523 |
dl |
1.1 |
} |
524 |
|
|
|
525 |
|
|
/** |
526 |
jsr166 |
1.22 |
* size returns the correct values |
527 |
dl |
1.1 |
*/ |
528 |
dl |
1.5 |
public void testSize() { |
529 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
530 |
|
|
ConcurrentHashMap empty = new ConcurrentHashMap(); |
531 |
jsr166 |
1.17 |
assertEquals(0, empty.size()); |
532 |
|
|
assertEquals(5, map.size()); |
533 |
dl |
1.1 |
} |
534 |
|
|
|
535 |
dl |
1.5 |
/** |
536 |
|
|
* toString contains toString of elements |
537 |
|
|
*/ |
538 |
|
|
public void testToString() { |
539 |
dl |
1.1 |
ConcurrentHashMap map = map5(); |
540 |
|
|
String s = map.toString(); |
541 |
|
|
for (int i = 1; i <= 5; ++i) { |
542 |
jsr166 |
1.24 |
assertTrue(s.contains(String.valueOf(i))); |
543 |
dl |
1.1 |
} |
544 |
jsr166 |
1.14 |
} |
545 |
dl |
1.1 |
|
546 |
|
|
// Exception tests |
547 |
jsr166 |
1.14 |
|
548 |
dl |
1.5 |
/** |
549 |
dl |
1.36 |
* Cannot create with only negative capacity |
550 |
dl |
1.5 |
*/ |
551 |
|
|
public void testConstructor1() { |
552 |
|
|
try { |
553 |
dl |
1.36 |
new ConcurrentHashMap(-1); |
554 |
dl |
1.5 |
shouldThrow(); |
555 |
jsr166 |
1.19 |
} catch (IllegalArgumentException success) {} |
556 |
dl |
1.1 |
} |
557 |
|
|
|
558 |
dl |
1.5 |
/** |
559 |
dl |
1.36 |
* Constructor (initialCapacity, loadFactor) throws |
560 |
|
|
* IllegalArgumentException if either argument is negative |
561 |
jsr166 |
1.47 |
*/ |
562 |
dl |
1.5 |
public void testConstructor2() { |
563 |
|
|
try { |
564 |
dl |
1.36 |
new ConcurrentHashMap(-1, .75f); |
565 |
dl |
1.5 |
shouldThrow(); |
566 |
jsr166 |
1.43 |
} catch (IllegalArgumentException success) {} |
567 |
jsr166 |
1.37 |
|
568 |
dl |
1.36 |
try { |
569 |
|
|
new ConcurrentHashMap(16, -1); |
570 |
|
|
shouldThrow(); |
571 |
jsr166 |
1.43 |
} catch (IllegalArgumentException success) {} |
572 |
dl |
1.1 |
} |
573 |
jsr166 |
1.37 |
|
574 |
|
|
/** |
575 |
|
|
* Constructor (initialCapacity, loadFactor, concurrencyLevel) |
576 |
|
|
* throws IllegalArgumentException if any argument is negative |
577 |
|
|
*/ |
578 |
dl |
1.36 |
public void testConstructor3() { |
579 |
jsr166 |
1.37 |
try { |
580 |
|
|
new ConcurrentHashMap(-1, .75f, 1); |
581 |
|
|
shouldThrow(); |
582 |
jsr166 |
1.43 |
} catch (IllegalArgumentException success) {} |
583 |
jsr166 |
1.37 |
|
584 |
|
|
try { |
585 |
|
|
new ConcurrentHashMap(16, -1, 1); |
586 |
|
|
shouldThrow(); |
587 |
jsr166 |
1.43 |
} catch (IllegalArgumentException success) {} |
588 |
jsr166 |
1.37 |
|
589 |
|
|
try { |
590 |
|
|
new ConcurrentHashMap(16, .75f, -1); |
591 |
|
|
shouldThrow(); |
592 |
jsr166 |
1.43 |
} catch (IllegalArgumentException success) {} |
593 |
jsr166 |
1.37 |
} |
594 |
dl |
1.1 |
|
595 |
dl |
1.5 |
/** |
596 |
dl |
1.36 |
* ConcurrentHashMap(map) throws NullPointerException if the given |
597 |
|
|
* map is null |
598 |
dl |
1.5 |
*/ |
599 |
dl |
1.36 |
public void testConstructor4() { |
600 |
dl |
1.5 |
try { |
601 |
dl |
1.36 |
new ConcurrentHashMap(null); |
602 |
dl |
1.5 |
shouldThrow(); |
603 |
jsr166 |
1.43 |
} catch (NullPointerException success) {} |
604 |
dl |
1.36 |
} |
605 |
|
|
|
606 |
|
|
/** |
607 |
|
|
* ConcurrentHashMap(map) creates a new map with the same mappings |
608 |
|
|
* as the given map |
609 |
|
|
*/ |
610 |
|
|
public void testConstructor5() { |
611 |
|
|
ConcurrentHashMap map1 = map5(); |
612 |
|
|
ConcurrentHashMap map2 = new ConcurrentHashMap(map5()); |
613 |
|
|
assertTrue(map2.equals(map1)); |
614 |
|
|
map2.put(one, "F"); |
615 |
|
|
assertFalse(map2.equals(map1)); |
616 |
dl |
1.1 |
} |
617 |
|
|
|
618 |
dl |
1.5 |
/** |
619 |
|
|
* get(null) throws NPE |
620 |
|
|
*/ |
621 |
|
|
public void testGet_NullPointerException() { |
622 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
623 |
dl |
1.5 |
try { |
624 |
dl |
1.1 |
c.get(null); |
625 |
dl |
1.5 |
shouldThrow(); |
626 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
627 |
dl |
1.1 |
} |
628 |
|
|
|
629 |
dl |
1.5 |
/** |
630 |
|
|
* containsKey(null) throws NPE |
631 |
|
|
*/ |
632 |
|
|
public void testContainsKey_NullPointerException() { |
633 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
634 |
dl |
1.5 |
try { |
635 |
dl |
1.1 |
c.containsKey(null); |
636 |
dl |
1.5 |
shouldThrow(); |
637 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
638 |
dl |
1.1 |
} |
639 |
|
|
|
640 |
dl |
1.5 |
/** |
641 |
|
|
* containsValue(null) throws NPE |
642 |
|
|
*/ |
643 |
|
|
public void testContainsValue_NullPointerException() { |
644 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
645 |
dl |
1.5 |
try { |
646 |
dl |
1.1 |
c.containsValue(null); |
647 |
dl |
1.5 |
shouldThrow(); |
648 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
649 |
dl |
1.1 |
} |
650 |
|
|
|
651 |
dl |
1.5 |
/** |
652 |
|
|
* contains(null) throws NPE |
653 |
|
|
*/ |
654 |
|
|
public void testContains_NullPointerException() { |
655 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
656 |
dl |
1.5 |
try { |
657 |
dl |
1.1 |
c.contains(null); |
658 |
dl |
1.5 |
shouldThrow(); |
659 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
660 |
dl |
1.1 |
} |
661 |
|
|
|
662 |
dl |
1.5 |
/** |
663 |
|
|
* put(null,x) throws NPE |
664 |
|
|
*/ |
665 |
|
|
public void testPut1_NullPointerException() { |
666 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
667 |
dl |
1.5 |
try { |
668 |
dl |
1.1 |
c.put(null, "whatever"); |
669 |
dl |
1.5 |
shouldThrow(); |
670 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
671 |
dl |
1.1 |
} |
672 |
|
|
|
673 |
dl |
1.5 |
/** |
674 |
|
|
* put(x, null) throws NPE |
675 |
|
|
*/ |
676 |
|
|
public void testPut2_NullPointerException() { |
677 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
678 |
dl |
1.5 |
try { |
679 |
dl |
1.1 |
c.put("whatever", null); |
680 |
dl |
1.5 |
shouldThrow(); |
681 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
682 |
dl |
1.1 |
} |
683 |
|
|
|
684 |
dl |
1.5 |
/** |
685 |
|
|
* putIfAbsent(null, x) throws NPE |
686 |
|
|
*/ |
687 |
|
|
public void testPutIfAbsent1_NullPointerException() { |
688 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
689 |
dl |
1.5 |
try { |
690 |
dl |
1.1 |
c.putIfAbsent(null, "whatever"); |
691 |
dl |
1.5 |
shouldThrow(); |
692 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
693 |
dl |
1.1 |
} |
694 |
|
|
|
695 |
dl |
1.5 |
/** |
696 |
dl |
1.7 |
* replace(null, x) throws NPE |
697 |
|
|
*/ |
698 |
|
|
public void testReplace_NullPointerException() { |
699 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
700 |
dl |
1.7 |
try { |
701 |
|
|
c.replace(null, "whatever"); |
702 |
|
|
shouldThrow(); |
703 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
704 |
dl |
1.7 |
} |
705 |
|
|
|
706 |
|
|
/** |
707 |
|
|
* replace(null, x, y) throws NPE |
708 |
|
|
*/ |
709 |
|
|
public void testReplaceValue_NullPointerException() { |
710 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
711 |
dl |
1.7 |
try { |
712 |
|
|
c.replace(null, one, "whatever"); |
713 |
|
|
shouldThrow(); |
714 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
715 |
dl |
1.7 |
} |
716 |
|
|
|
717 |
|
|
/** |
718 |
dl |
1.5 |
* putIfAbsent(x, null) throws NPE |
719 |
|
|
*/ |
720 |
|
|
public void testPutIfAbsent2_NullPointerException() { |
721 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
722 |
dl |
1.5 |
try { |
723 |
dl |
1.1 |
c.putIfAbsent("whatever", null); |
724 |
dl |
1.7 |
shouldThrow(); |
725 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
726 |
dl |
1.7 |
} |
727 |
|
|
|
728 |
|
|
/** |
729 |
|
|
* replace(x, null) throws NPE |
730 |
|
|
*/ |
731 |
|
|
public void testReplace2_NullPointerException() { |
732 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
733 |
dl |
1.7 |
try { |
734 |
|
|
c.replace("whatever", null); |
735 |
|
|
shouldThrow(); |
736 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
737 |
dl |
1.7 |
} |
738 |
|
|
|
739 |
|
|
/** |
740 |
|
|
* replace(x, null, y) throws NPE |
741 |
|
|
*/ |
742 |
|
|
public void testReplaceValue2_NullPointerException() { |
743 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
744 |
dl |
1.7 |
try { |
745 |
|
|
c.replace("whatever", null, "A"); |
746 |
|
|
shouldThrow(); |
747 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
748 |
dl |
1.7 |
} |
749 |
|
|
|
750 |
|
|
/** |
751 |
|
|
* replace(x, y, null) throws NPE |
752 |
|
|
*/ |
753 |
|
|
public void testReplaceValue3_NullPointerException() { |
754 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
755 |
dl |
1.7 |
try { |
756 |
|
|
c.replace("whatever", one, null); |
757 |
dl |
1.5 |
shouldThrow(); |
758 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
759 |
dl |
1.1 |
} |
760 |
|
|
|
761 |
dl |
1.5 |
/** |
762 |
|
|
* remove(null) throws NPE |
763 |
|
|
*/ |
764 |
|
|
public void testRemove1_NullPointerException() { |
765 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
766 |
|
|
c.put("sadsdf", "asdads"); |
767 |
dl |
1.5 |
try { |
768 |
dl |
1.1 |
c.remove(null); |
769 |
dl |
1.5 |
shouldThrow(); |
770 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
771 |
dl |
1.1 |
} |
772 |
|
|
|
773 |
dl |
1.5 |
/** |
774 |
|
|
* remove(null, x) throws NPE |
775 |
|
|
*/ |
776 |
|
|
public void testRemove2_NullPointerException() { |
777 |
jsr166 |
1.44 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
778 |
|
|
c.put("sadsdf", "asdads"); |
779 |
dl |
1.5 |
try { |
780 |
dl |
1.1 |
c.remove(null, "whatever"); |
781 |
dl |
1.5 |
shouldThrow(); |
782 |
jsr166 |
1.19 |
} catch (NullPointerException success) {} |
783 |
dl |
1.1 |
} |
784 |
dl |
1.2 |
|
785 |
dl |
1.5 |
/** |
786 |
dl |
1.12 |
* remove(x, null) returns false |
787 |
|
|
*/ |
788 |
|
|
public void testRemove3() { |
789 |
jsr166 |
1.19 |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
790 |
|
|
c.put("sadsdf", "asdads"); |
791 |
|
|
assertFalse(c.remove("sadsdf", null)); |
792 |
dl |
1.12 |
} |
793 |
|
|
|
794 |
|
|
/** |
795 |
jsr166 |
1.55 |
* A deserialized/reserialized map equals original |
796 |
dl |
1.5 |
*/ |
797 |
jsr166 |
1.18 |
public void testSerialization() throws Exception { |
798 |
jsr166 |
1.25 |
Map x = map5(); |
799 |
|
|
Map y = serialClone(x); |
800 |
dl |
1.2 |
|
801 |
jsr166 |
1.31 |
assertNotSame(x, y); |
802 |
jsr166 |
1.25 |
assertEquals(x.size(), y.size()); |
803 |
|
|
assertEquals(x, y); |
804 |
|
|
assertEquals(y, x); |
805 |
dl |
1.2 |
} |
806 |
dl |
1.6 |
|
807 |
|
|
/** |
808 |
|
|
* SetValue of an EntrySet entry sets value in the map. |
809 |
|
|
*/ |
810 |
|
|
public void testSetValueWriteThrough() { |
811 |
jsr166 |
1.14 |
// Adapted from a bug report by Eric Zoerner |
812 |
dl |
1.6 |
ConcurrentHashMap map = new ConcurrentHashMap(2, 5.0f, 1); |
813 |
|
|
assertTrue(map.isEmpty()); |
814 |
|
|
for (int i = 0; i < 20; i++) |
815 |
|
|
map.put(new Integer(i), new Integer(i)); |
816 |
|
|
assertFalse(map.isEmpty()); |
817 |
|
|
Map.Entry entry1 = (Map.Entry)map.entrySet().iterator().next(); |
818 |
dl |
1.29 |
// Unless it happens to be first (in which case remainder of |
819 |
|
|
// test is skipped), remove a possibly-colliding key from map |
820 |
|
|
// which, under some implementations, may cause entry1 to be |
821 |
|
|
// cloned in map |
822 |
|
|
if (!entry1.getKey().equals(new Integer(16))) { |
823 |
|
|
map.remove(new Integer(16)); |
824 |
|
|
entry1.setValue("XYZ"); |
825 |
|
|
assertTrue(map.containsValue("XYZ")); // fails if write-through broken |
826 |
|
|
} |
827 |
dl |
1.6 |
} |
828 |
jsr166 |
1.14 |
|
829 |
jsr166 |
1.48 |
/** |
830 |
|
|
* Tests performance of removeAll when the other collection is much smaller. |
831 |
|
|
* ant -Djsr166.tckTestClass=ConcurrentHashMapTest -Djsr166.methodFilter=testRemoveAll_performance -Djsr166.expensiveTests=true tck |
832 |
|
|
*/ |
833 |
|
|
public void testRemoveAll_performance() { |
834 |
jsr166 |
1.49 |
final int mapSize = expensiveTests ? 1_000_000 : 100; |
835 |
|
|
final int iterations = expensiveTests ? 500 : 2; |
836 |
|
|
final ConcurrentHashMap<Integer, Integer> map = new ConcurrentHashMap<>(); |
837 |
jsr166 |
1.48 |
for (int i = 0; i < mapSize; i++) |
838 |
|
|
map.put(i, i); |
839 |
|
|
Set<Integer> keySet = map.keySet(); |
840 |
|
|
Collection<Integer> removeMe = Arrays.asList(new Integer[] { -99, -86 }); |
841 |
|
|
for (int i = 0; i < iterations; i++) |
842 |
|
|
assertFalse(keySet.removeAll(removeMe)); |
843 |
|
|
assertEquals(mapSize, map.size()); |
844 |
|
|
} |
845 |
jsr166 |
1.49 |
|
846 |
dl |
1.1 |
} |