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/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/licenses/publicdomain |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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* Other contributors include Andrew Wright, Jeffrey Hayes, |
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* Pat Fisher, Mike Judd. |
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*/ |
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import junit.framework.*; |
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import java.util.*; |
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import java.util.concurrent.*; |
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import java.util.ArrayList; |
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import java.util.Arrays; |
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import java.util.Collection; |
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import java.util.Collections; |
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import java.util.Enumeration; |
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import java.io.*; |
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import java.util.Iterator; |
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import java.util.Map; |
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import java.util.Random; |
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import java.util.Set; |
18 |
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import java.util.concurrent.ConcurrentHashMap; |
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|
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import junit.framework.Test; |
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import junit.framework.TestSuite; |
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|
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public class ConcurrentHashMapTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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junit.textui.TestRunner.run (suite()); |
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junit.textui.TestRunner.run(suite()); |
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} |
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public static Test suite() { |
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return new TestSuite(ConcurrentHashMapTest.class); |
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} |
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|
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/** |
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* Create a map from Integers 1-5 to Strings "A"-"E". |
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* Returns a new map from Integers 1-5 to Strings "A"-"E". |
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*/ |
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private static ConcurrentHashMap map5() { |
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ConcurrentHashMap map = new ConcurrentHashMap(5); |
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private static ConcurrentHashMap<Integer, String> map5() { |
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ConcurrentHashMap map = new ConcurrentHashMap<Integer, String>(5); |
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assertTrue(map.isEmpty()); |
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map.put(one, "A"); |
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map.put(two, "B"); |
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return map; |
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} |
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|
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/** Re-implement Integer.compare for old java versions */ |
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static int compare(int x, int y) { return x < y ? -1 : x > y ? 1 : 0; } |
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|
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// classes for testing Comparable fallbacks |
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static class BI implements Comparable<BI> { |
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private final int value; |
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BI(int value) { this.value = value; } |
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public int compareTo(BI other) { |
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return compare(value, other.value); |
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} |
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public boolean equals(Object x) { |
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return (x instanceof BI) && ((BI)x).value == value; |
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} |
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public int hashCode() { return 42; } |
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} |
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static class CI extends BI { CI(int value) { super(value); } } |
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static class DI extends BI { DI(int value) { super(value); } } |
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|
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static class BS implements Comparable<BS> { |
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private final String value; |
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BS(String value) { this.value = value; } |
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public int compareTo(BS other) { |
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return value.compareTo(other.value); |
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} |
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public boolean equals(Object x) { |
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return (x instanceof BS) && value.equals(((BS)x).value); |
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} |
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public int hashCode() { return 42; } |
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} |
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|
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static class LexicographicList<E extends Comparable<E>> extends ArrayList<E> |
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implements Comparable<LexicographicList<E>> { |
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LexicographicList(Collection<E> c) { super(c); } |
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LexicographicList(E e) { super(Collections.singleton(e)); } |
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public int compareTo(LexicographicList<E> other) { |
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int common = Math.min(size(), other.size()); |
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int r = 0; |
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for (int i = 0; i < common; i++) { |
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if ((r = get(i).compareTo(other.get(i))) != 0) |
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break; |
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} |
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if (r == 0) |
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r = compare(size(), other.size()); |
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return r; |
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} |
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private static final long serialVersionUID = 0; |
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} |
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|
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static class CollidingObject { |
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final String value; |
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CollidingObject(final String value) { this.value = value; } |
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public int hashCode() { return this.value.hashCode() & 1; } |
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public boolean equals(final Object obj) { |
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return (obj instanceof CollidingObject) && ((CollidingObject)obj).value.equals(value); |
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} |
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} |
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|
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static class ComparableCollidingObject extends CollidingObject implements Comparable<ComparableCollidingObject> { |
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ComparableCollidingObject(final String value) { super(value); } |
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public int compareTo(final ComparableCollidingObject o) { |
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return value.compareTo(o.value); |
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} |
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} |
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|
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/** |
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* Inserted elements that are subclasses of the same Comparable |
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* class are found. |
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*/ |
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public void testComparableFamily() { |
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int size = 500; // makes measured test run time -> 60ms |
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ConcurrentHashMap<BI, Boolean> m = |
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new ConcurrentHashMap<BI, Boolean>(); |
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for (int i = 0; i < size; i++) { |
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assertTrue(m.put(new CI(i), true) == null); |
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} |
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for (int i = 0; i < size; i++) { |
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assertTrue(m.containsKey(new CI(i))); |
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assertTrue(m.containsKey(new DI(i))); |
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} |
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} |
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|
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/** |
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* Elements of classes with erased generic type parameters based |
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* on Comparable can be inserted and found. |
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*/ |
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public void testGenericComparable() { |
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int size = 120; // makes measured test run time -> 60ms |
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ConcurrentHashMap<Object, Boolean> m = |
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new ConcurrentHashMap<Object, Boolean>(); |
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for (int i = 0; i < size; i++) { |
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BI bi = new BI(i); |
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BS bs = new BS(String.valueOf(i)); |
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LexicographicList<BI> bis = new LexicographicList<BI>(bi); |
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LexicographicList<BS> bss = new LexicographicList<BS>(bs); |
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assertTrue(m.putIfAbsent(bis, true) == null); |
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assertTrue(m.containsKey(bis)); |
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if (m.putIfAbsent(bss, true) == null) |
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assertTrue(m.containsKey(bss)); |
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assertTrue(m.containsKey(bis)); |
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} |
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for (int i = 0; i < size; i++) { |
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assertTrue(m.containsKey(Collections.singletonList(new BI(i)))); |
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} |
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} |
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|
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/** |
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* Elements of non-comparable classes equal to those of classes |
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* with erased generic type parameters based on Comparable can be |
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* inserted and found. |
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*/ |
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public void testGenericComparable2() { |
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int size = 500; // makes measured test run time -> 60ms |
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ConcurrentHashMap<Object, Boolean> m = |
160 |
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new ConcurrentHashMap<Object, Boolean>(); |
161 |
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for (int i = 0; i < size; i++) { |
162 |
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m.put(Collections.singletonList(new BI(i)), true); |
163 |
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} |
164 |
+ |
|
165 |
+ |
for (int i = 0; i < size; i++) { |
166 |
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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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|
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/** |
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* clear removes all pairs |
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> |
* Mixtures of instances of comparable and non-comparable classes |
173 |
> |
* can be inserted and found. |
174 |
> |
*/ |
175 |
> |
public void testMixedComparable() { |
176 |
> |
int size = 1200; // makes measured test run time -> 35ms |
177 |
> |
ConcurrentHashMap<Object, Object> map = |
178 |
> |
new ConcurrentHashMap<Object, Object>(); |
179 |
> |
Random rng = new Random(); |
180 |
> |
for (int i = 0; i < size; i++) { |
181 |
> |
Object x; |
182 |
> |
switch (rng.nextInt(4)) { |
183 |
> |
case 0: |
184 |
> |
x = new Object(); |
185 |
> |
break; |
186 |
> |
case 1: |
187 |
> |
x = new CollidingObject(Integer.toString(i)); |
188 |
> |
break; |
189 |
> |
default: |
190 |
> |
x = new ComparableCollidingObject(Integer.toString(i)); |
191 |
> |
} |
192 |
> |
assertNull(map.put(x, x)); |
193 |
> |
} |
194 |
> |
int count = 0; |
195 |
> |
for (Object k : map.keySet()) { |
196 |
> |
assertEquals(map.get(k), k); |
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> |
++count; |
198 |
> |
} |
199 |
> |
assertEquals(count, size); |
200 |
> |
assertEquals(map.size(), size); |
201 |
> |
for (Object k : map.keySet()) { |
202 |
> |
assertEquals(map.put(k, k), k); |
203 |
> |
} |
204 |
> |
} |
205 |
> |
|
206 |
> |
/** |
207 |
> |
* clear removes all pairs |
208 |
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*/ |
209 |
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public void testClear() { |
210 |
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ConcurrentHashMap map = map5(); |
211 |
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map.clear(); |
212 |
< |
assertEquals(map.size(), 0); |
212 |
> |
assertEquals(0, map.size()); |
213 |
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} |
214 |
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|
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/** |
216 |
< |
* Maps with same contents are equal |
216 |
> |
* Maps with same contents are equal |
217 |
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*/ |
218 |
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public void testEquals() { |
219 |
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ConcurrentHashMap map1 = map5(); |
226 |
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} |
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|
228 |
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/** |
229 |
< |
* contains returns true for contained value |
229 |
> |
* hashCode() equals sum of each key.hashCode ^ value.hashCode |
230 |
> |
*/ |
231 |
> |
public void testHashCode() { |
232 |
> |
ConcurrentHashMap<Integer,String> map = map5(); |
233 |
> |
int sum = 0; |
234 |
> |
for (Map.Entry<Integer,String> e : map.entrySet()) |
235 |
> |
sum += e.getKey().hashCode() ^ e.getValue().hashCode(); |
236 |
> |
assertEquals(sum, map.hashCode()); |
237 |
> |
} |
238 |
> |
|
239 |
> |
/** |
240 |
> |
* contains returns true for contained value |
241 |
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*/ |
242 |
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public void testContains() { |
243 |
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ConcurrentHashMap map = map5(); |
246 |
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} |
247 |
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|
248 |
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/** |
249 |
< |
* containsKey returns true for contained key |
249 |
> |
* containsKey returns true for contained key |
250 |
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*/ |
251 |
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public void testContainsKey() { |
252 |
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ConcurrentHashMap map = map5(); |
255 |
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} |
256 |
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|
257 |
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/** |
258 |
< |
* containsValue returns true for held values |
258 |
> |
* containsValue returns true for held values |
259 |
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*/ |
260 |
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public void testContainsValue() { |
261 |
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ConcurrentHashMap map = map5(); |
264 |
|
} |
265 |
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|
266 |
|
/** |
267 |
< |
* enumeration returns an enumeration containing the correct |
268 |
< |
* elements |
267 |
> |
* enumeration returns an enumeration containing the correct |
268 |
> |
* elements |
269 |
|
*/ |
270 |
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public void testEnumeration() { |
271 |
|
ConcurrentHashMap map = map5(); |
279 |
|
} |
280 |
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|
281 |
|
/** |
282 |
< |
* get returns the correct element at the given key, |
283 |
< |
* or null if not present |
282 |
> |
* get returns the correct element at the given key, |
283 |
> |
* or null if not present |
284 |
|
*/ |
285 |
|
public void testGet() { |
286 |
|
ConcurrentHashMap map = map5(); |
290 |
|
} |
291 |
|
|
292 |
|
/** |
293 |
< |
* isEmpty is true of empty map and false for non-empty |
293 |
> |
* isEmpty is true of empty map and false for non-empty |
294 |
|
*/ |
295 |
|
public void testIsEmpty() { |
296 |
|
ConcurrentHashMap empty = new ConcurrentHashMap(); |
300 |
|
} |
301 |
|
|
302 |
|
/** |
303 |
< |
* keys returns an enumeration containing all the keys from the map |
303 |
> |
* keys returns an enumeration containing all the keys from the map |
304 |
|
*/ |
305 |
|
public void testKeys() { |
306 |
|
ConcurrentHashMap map = map5(); |
314 |
|
} |
315 |
|
|
316 |
|
/** |
317 |
< |
* keySet returns a Set containing all the keys |
317 |
> |
* keySet returns a Set containing all the keys |
318 |
|
*/ |
319 |
|
public void testKeySet() { |
320 |
|
ConcurrentHashMap map = map5(); |
328 |
|
} |
329 |
|
|
330 |
|
/** |
331 |
< |
* keySet.toArray returns contains all keys |
331 |
> |
* keySet.toArray returns contains all keys |
332 |
|
*/ |
333 |
|
public void testKeySetToArray() { |
334 |
|
ConcurrentHashMap map = map5(); |
341 |
|
} |
342 |
|
|
343 |
|
/** |
344 |
< |
* Values.toArray contains all values |
344 |
> |
* Values.toArray contains all values |
345 |
|
*/ |
346 |
|
public void testValuesToArray() { |
347 |
|
ConcurrentHashMap map = map5(); |
357 |
|
} |
358 |
|
|
359 |
|
/** |
360 |
< |
* entrySet.toArray contains all entries |
360 |
> |
* entrySet.toArray contains all entries |
361 |
|
*/ |
362 |
|
public void testEntrySetToArray() { |
363 |
|
ConcurrentHashMap map = map5(); |
404 |
|
} |
405 |
|
|
406 |
|
/** |
407 |
< |
* putAll adds all key-value pairs from the given map |
407 |
> |
* putAll adds all key-value pairs from the given map |
408 |
|
*/ |
409 |
|
public void testPutAll() { |
410 |
|
ConcurrentHashMap empty = new ConcurrentHashMap(); |
419 |
|
} |
420 |
|
|
421 |
|
/** |
422 |
< |
* putIfAbsent works when the given key is not present |
422 |
> |
* putIfAbsent works when the given key is not present |
423 |
|
*/ |
424 |
|
public void testPutIfAbsent() { |
425 |
|
ConcurrentHashMap map = map5(); |
428 |
|
} |
429 |
|
|
430 |
|
/** |
431 |
< |
* putIfAbsent does not add the pair if the key is already present |
431 |
> |
* putIfAbsent does not add the pair if the key is already present |
432 |
|
*/ |
433 |
|
public void testPutIfAbsent2() { |
434 |
|
ConcurrentHashMap map = map5(); |
436 |
|
} |
437 |
|
|
438 |
|
/** |
439 |
< |
* replace fails when the given key is not present |
439 |
> |
* replace fails when the given key is not present |
440 |
|
*/ |
441 |
|
public void testReplace() { |
442 |
|
ConcurrentHashMap map = map5(); |
445 |
|
} |
446 |
|
|
447 |
|
/** |
448 |
< |
* replace succeeds if the key is already present |
448 |
> |
* replace succeeds if the key is already present |
449 |
|
*/ |
450 |
|
public void testReplace2() { |
451 |
|
ConcurrentHashMap map = map5(); |
453 |
|
assertEquals("Z", map.get(one)); |
454 |
|
} |
455 |
|
|
278 |
– |
|
456 |
|
/** |
457 |
|
* replace value fails when the given key not mapped to expected value |
458 |
|
*/ |
473 |
|
assertEquals("Z", map.get(one)); |
474 |
|
} |
475 |
|
|
299 |
– |
|
476 |
|
/** |
477 |
< |
* remove removes the correct key-value pair from the map |
477 |
> |
* remove removes the correct key-value pair from the map |
478 |
|
*/ |
479 |
|
public void testRemove() { |
480 |
|
ConcurrentHashMap map = map5(); |
494 |
|
map.remove(four, "A"); |
495 |
|
assertEquals(4, map.size()); |
496 |
|
assertTrue(map.containsKey(four)); |
321 |
– |
|
497 |
|
} |
498 |
|
|
499 |
|
/** |
500 |
< |
* size returns the correct values |
500 |
> |
* size returns the correct values |
501 |
|
*/ |
502 |
|
public void testSize() { |
503 |
|
ConcurrentHashMap map = map5(); |
513 |
|
ConcurrentHashMap map = map5(); |
514 |
|
String s = map.toString(); |
515 |
|
for (int i = 1; i <= 5; ++i) { |
516 |
< |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
516 |
> |
assertTrue(s.contains(String.valueOf(i))); |
517 |
|
} |
518 |
|
} |
519 |
|
|
520 |
|
// Exception tests |
521 |
|
|
522 |
|
/** |
523 |
< |
* Cannot create with negative capacity |
523 |
> |
* Cannot create with only negative capacity |
524 |
|
*/ |
525 |
|
public void testConstructor1() { |
526 |
|
try { |
527 |
< |
new ConcurrentHashMap(-1,0,1); |
527 |
> |
new ConcurrentHashMap(-1); |
528 |
|
shouldThrow(); |
529 |
< |
} catch (IllegalArgumentException e) {} |
529 |
> |
} catch (IllegalArgumentException success) {} |
530 |
|
} |
531 |
|
|
532 |
|
/** |
533 |
< |
* Cannot create with negative concurrency level |
534 |
< |
*/ |
533 |
> |
* Constructor (initialCapacity, loadFactor) throws |
534 |
> |
* IllegalArgumentException if either argument is negative |
535 |
> |
*/ |
536 |
|
public void testConstructor2() { |
537 |
|
try { |
538 |
< |
new ConcurrentHashMap(1,0,-1); |
538 |
> |
new ConcurrentHashMap(-1, .75f); |
539 |
> |
shouldThrow(); |
540 |
> |
} catch (IllegalArgumentException e) {} |
541 |
> |
|
542 |
> |
try { |
543 |
> |
new ConcurrentHashMap(16, -1); |
544 |
|
shouldThrow(); |
545 |
|
} catch (IllegalArgumentException e) {} |
546 |
|
} |
547 |
|
|
548 |
|
/** |
549 |
< |
* Cannot create with only negative capacity |
549 |
> |
* Constructor (initialCapacity, loadFactor, concurrencyLevel) |
550 |
> |
* throws IllegalArgumentException if any argument is negative |
551 |
|
*/ |
552 |
|
public void testConstructor3() { |
553 |
|
try { |
554 |
< |
new ConcurrentHashMap(-1); |
554 |
> |
new ConcurrentHashMap(-1, .75f, 1); |
555 |
|
shouldThrow(); |
556 |
|
} catch (IllegalArgumentException e) {} |
557 |
+ |
|
558 |
+ |
try { |
559 |
+ |
new ConcurrentHashMap(16, -1, 1); |
560 |
+ |
shouldThrow(); |
561 |
+ |
} catch (IllegalArgumentException e) {} |
562 |
+ |
|
563 |
+ |
try { |
564 |
+ |
new ConcurrentHashMap(16, .75f, -1); |
565 |
+ |
shouldThrow(); |
566 |
+ |
} catch (IllegalArgumentException e) {} |
567 |
+ |
} |
568 |
+ |
|
569 |
+ |
/** |
570 |
+ |
* ConcurrentHashMap(map) throws NullPointerException if the given |
571 |
+ |
* map is null |
572 |
+ |
*/ |
573 |
+ |
public void testConstructor4() { |
574 |
+ |
try { |
575 |
+ |
new ConcurrentHashMap(null); |
576 |
+ |
shouldThrow(); |
577 |
+ |
} catch (NullPointerException e) {} |
578 |
+ |
} |
579 |
+ |
|
580 |
+ |
/** |
581 |
+ |
* ConcurrentHashMap(map) creates a new map with the same mappings |
582 |
+ |
* as the given map |
583 |
+ |
*/ |
584 |
+ |
public void testConstructor5() { |
585 |
+ |
ConcurrentHashMap map1 = map5(); |
586 |
+ |
ConcurrentHashMap map2 = new ConcurrentHashMap(map5()); |
587 |
+ |
assertTrue(map2.equals(map1)); |
588 |
+ |
map2.put(one, "F"); |
589 |
+ |
assertFalse(map2.equals(map1)); |
590 |
|
} |
591 |
|
|
592 |
+ |
|
593 |
|
/** |
594 |
|
* get(null) throws NPE |
595 |
|
*/ |
598 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
599 |
|
c.get(null); |
600 |
|
shouldThrow(); |
601 |
< |
} catch (NullPointerException e) {} |
601 |
> |
} catch (NullPointerException success) {} |
602 |
|
} |
603 |
|
|
604 |
|
/** |
609 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
610 |
|
c.containsKey(null); |
611 |
|
shouldThrow(); |
612 |
< |
} catch (NullPointerException e) {} |
612 |
> |
} catch (NullPointerException success) {} |
613 |
|
} |
614 |
|
|
615 |
|
/** |
620 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
621 |
|
c.containsValue(null); |
622 |
|
shouldThrow(); |
623 |
< |
} catch (NullPointerException e) {} |
623 |
> |
} catch (NullPointerException success) {} |
624 |
|
} |
625 |
|
|
626 |
|
/** |
631 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
632 |
|
c.contains(null); |
633 |
|
shouldThrow(); |
634 |
< |
} catch (NullPointerException e) {} |
634 |
> |
} catch (NullPointerException success) {} |
635 |
|
} |
636 |
|
|
637 |
|
/** |
642 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
643 |
|
c.put(null, "whatever"); |
644 |
|
shouldThrow(); |
645 |
< |
} catch (NullPointerException e) {} |
645 |
> |
} catch (NullPointerException success) {} |
646 |
|
} |
647 |
|
|
648 |
|
/** |
653 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
654 |
|
c.put("whatever", null); |
655 |
|
shouldThrow(); |
656 |
< |
} catch (NullPointerException e) {} |
656 |
> |
} catch (NullPointerException success) {} |
657 |
|
} |
658 |
|
|
659 |
|
/** |
664 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
665 |
|
c.putIfAbsent(null, "whatever"); |
666 |
|
shouldThrow(); |
667 |
< |
} catch (NullPointerException e) {} |
667 |
> |
} catch (NullPointerException success) {} |
668 |
|
} |
669 |
|
|
670 |
|
/** |
675 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
676 |
|
c.replace(null, "whatever"); |
677 |
|
shouldThrow(); |
678 |
< |
} catch (NullPointerException e) {} |
678 |
> |
} catch (NullPointerException success) {} |
679 |
|
} |
680 |
|
|
681 |
|
/** |
686 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
687 |
|
c.replace(null, one, "whatever"); |
688 |
|
shouldThrow(); |
689 |
< |
} catch (NullPointerException e) {} |
689 |
> |
} catch (NullPointerException success) {} |
690 |
|
} |
691 |
|
|
692 |
|
/** |
697 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
698 |
|
c.putIfAbsent("whatever", null); |
699 |
|
shouldThrow(); |
700 |
< |
} catch (NullPointerException e) {} |
700 |
> |
} catch (NullPointerException success) {} |
701 |
|
} |
702 |
|
|
487 |
– |
|
703 |
|
/** |
704 |
|
* replace(x, null) throws NPE |
705 |
|
*/ |
708 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
709 |
|
c.replace("whatever", null); |
710 |
|
shouldThrow(); |
711 |
< |
} catch (NullPointerException e) {} |
711 |
> |
} catch (NullPointerException success) {} |
712 |
|
} |
713 |
|
|
714 |
|
/** |
719 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
720 |
|
c.replace("whatever", null, "A"); |
721 |
|
shouldThrow(); |
722 |
< |
} catch (NullPointerException e) {} |
722 |
> |
} catch (NullPointerException success) {} |
723 |
|
} |
724 |
|
|
725 |
|
/** |
730 |
|
ConcurrentHashMap c = new ConcurrentHashMap(5); |
731 |
|
c.replace("whatever", one, null); |
732 |
|
shouldThrow(); |
733 |
< |
} catch (NullPointerException e) {} |
733 |
> |
} catch (NullPointerException success) {} |
734 |
|
} |
735 |
|
|
521 |
– |
|
736 |
|
/** |
737 |
|
* remove(null) throws NPE |
738 |
|
*/ |
742 |
|
c.put("sadsdf", "asdads"); |
743 |
|
c.remove(null); |
744 |
|
shouldThrow(); |
745 |
< |
} catch (NullPointerException e) {} |
745 |
> |
} catch (NullPointerException success) {} |
746 |
|
} |
747 |
|
|
748 |
|
/** |
754 |
|
c.put("sadsdf", "asdads"); |
755 |
|
c.remove(null, "whatever"); |
756 |
|
shouldThrow(); |
757 |
< |
} catch (NullPointerException e) {} |
757 |
> |
} catch (NullPointerException success) {} |
758 |
|
} |
759 |
|
|
760 |
|
/** |
761 |
|
* remove(x, null) returns false |
762 |
|
*/ |
763 |
|
public void testRemove3() { |
764 |
< |
try { |
765 |
< |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
766 |
< |
c.put("sadsdf", "asdads"); |
553 |
< |
assertFalse(c.remove("sadsdf", null)); |
554 |
< |
} catch (NullPointerException e) { |
555 |
< |
fail(); |
556 |
< |
} |
764 |
> |
ConcurrentHashMap c = new ConcurrentHashMap(5); |
765 |
> |
c.put("sadsdf", "asdads"); |
766 |
> |
assertFalse(c.remove("sadsdf", null)); |
767 |
|
} |
768 |
|
|
769 |
|
/** |
770 |
|
* A deserialized map equals original |
771 |
|
*/ |
772 |
|
public void testSerialization() throws Exception { |
773 |
< |
ConcurrentHashMap q = map5(); |
773 |
> |
Map x = map5(); |
774 |
> |
Map y = serialClone(x); |
775 |
|
|
776 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
777 |
< |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
778 |
< |
out.writeObject(q); |
779 |
< |
out.close(); |
569 |
< |
|
570 |
< |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
571 |
< |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
572 |
< |
ConcurrentHashMap r = (ConcurrentHashMap)in.readObject(); |
573 |
< |
assertEquals(q.size(), r.size()); |
574 |
< |
assertTrue(q.equals(r)); |
575 |
< |
assertTrue(r.equals(q)); |
776 |
> |
assertNotSame(x, y); |
777 |
> |
assertEquals(x.size(), y.size()); |
778 |
> |
assertEquals(x, y); |
779 |
> |
assertEquals(y, x); |
780 |
|
} |
781 |
|
|
578 |
– |
|
782 |
|
/** |
783 |
|
* SetValue of an EntrySet entry sets value in the map. |
784 |
|
*/ |
790 |
|
map.put(new Integer(i), new Integer(i)); |
791 |
|
assertFalse(map.isEmpty()); |
792 |
|
Map.Entry entry1 = (Map.Entry)map.entrySet().iterator().next(); |
793 |
< |
|
794 |
< |
// assert that entry1 is not 16 |
795 |
< |
assertTrue("entry is 16, test not valid", |
796 |
< |
!entry1.getKey().equals(new Integer(16))); |
797 |
< |
|
798 |
< |
// remove 16 (a different key) from map |
799 |
< |
// which just happens to cause entry1 to be cloned in map |
800 |
< |
map.remove(new Integer(16)); |
801 |
< |
entry1.setValue("XYZ"); |
599 |
< |
assertTrue(map.containsValue("XYZ")); // fails |
793 |
> |
// 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 |
|
} |
803 |
|
|
804 |
|
} |