14 |
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15 |
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public class AtomicReferenceArrayTest extends JSR166TestCase { |
16 |
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public static void main(String[] args) { |
17 |
< |
junit.textui.TestRunner.run(suite()); |
17 |
> |
main(suite(), args); |
18 |
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} |
19 |
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public static Test suite() { |
20 |
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return new TestSuite(AtomicReferenceArrayTest.class); |
24 |
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* constructor creates array of given size with all elements null |
25 |
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*/ |
26 |
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public void testConstructor() { |
27 |
< |
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(SIZE); |
27 |
> |
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE); |
28 |
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for (int i = 0; i < SIZE; i++) { |
29 |
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assertNull(aa.get(i)); |
30 |
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} |
36 |
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public void testConstructor2NPE() { |
37 |
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try { |
38 |
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Integer[] a = null; |
39 |
< |
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(a); |
39 |
> |
new AtomicReferenceArray<Integer>(a); |
40 |
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shouldThrow(); |
41 |
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} catch (NullPointerException success) {} |
42 |
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} |
45 |
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* constructor with array is of same size and has all elements |
46 |
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*/ |
47 |
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public void testConstructor2() { |
48 |
< |
Integer[] a = { two, one, three, four, seven }; |
49 |
< |
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(a); |
48 |
> |
Item[] a = { two, one, three, four, seven }; |
49 |
> |
AtomicReferenceArray<Item> aa = new AtomicReferenceArray<>(a); |
50 |
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assertEquals(a.length, aa.length()); |
51 |
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for (int i = 0; i < a.length; i++) |
52 |
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assertEquals(a[i], aa.get(i)); |
56 |
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* Initialize AtomicReferenceArray<Class> with SubClass[] |
57 |
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*/ |
58 |
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public void testConstructorSubClassArray() { |
59 |
< |
Integer[] a = { two, one, three, four, seven }; |
60 |
< |
AtomicReferenceArray<Number> aa = new AtomicReferenceArray<Number>(a); |
59 |
> |
Item[] a = { two, one, three, four, seven }; |
60 |
> |
AtomicReferenceArray<Number> aa = new AtomicReferenceArray<>(a); |
61 |
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assertEquals(a.length, aa.length()); |
62 |
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for (int i = 0; i < a.length; i++) { |
63 |
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assertSame(a[i], aa.get(i)); |
70 |
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/** |
71 |
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* get and set for out of bound indices throw IndexOutOfBoundsException |
72 |
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*/ |
73 |
+ |
@SuppressWarnings("deprecation") |
74 |
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public void testIndexing() { |
75 |
< |
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(SIZE); |
75 |
> |
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE); |
76 |
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for (int index : new int[] { -1, SIZE }) { |
77 |
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try { |
78 |
|
aa.get(index); |
101 |
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* get returns the last value set at index |
102 |
|
*/ |
103 |
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public void testGetSet() { |
104 |
< |
AtomicReferenceArray aa = new AtomicReferenceArray(SIZE); |
104 |
> |
AtomicReferenceArray<Item> aa = new AtomicReferenceArray<>(SIZE); |
105 |
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for (int i = 0; i < SIZE; i++) { |
106 |
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aa.set(i, one); |
107 |
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assertSame(one, aa.get(i)); |
108 |
|
aa.set(i, two); |
109 |
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assertSame(two, aa.get(i)); |
110 |
< |
aa.set(i, m3); |
111 |
< |
assertSame(m3, aa.get(i)); |
110 |
> |
aa.set(i, minusThree); |
111 |
> |
assertSame(minusThree, aa.get(i)); |
112 |
|
} |
113 |
|
} |
114 |
|
|
116 |
|
* get returns the last value lazySet at index by same thread |
117 |
|
*/ |
118 |
|
public void testGetLazySet() { |
119 |
< |
AtomicReferenceArray aa = new AtomicReferenceArray(SIZE); |
119 |
> |
AtomicReferenceArray<Item> aa = new AtomicReferenceArray<>(SIZE); |
120 |
|
for (int i = 0; i < SIZE; i++) { |
121 |
|
aa.lazySet(i, one); |
122 |
|
assertSame(one, aa.get(i)); |
123 |
|
aa.lazySet(i, two); |
124 |
|
assertSame(two, aa.get(i)); |
125 |
< |
aa.lazySet(i, m3); |
126 |
< |
assertSame(m3, aa.get(i)); |
125 |
> |
aa.lazySet(i, minusThree); |
126 |
> |
assertSame(minusThree, aa.get(i)); |
127 |
|
} |
128 |
|
} |
129 |
|
|
131 |
|
* compareAndSet succeeds in changing value if equal to expected else fails |
132 |
|
*/ |
133 |
|
public void testCompareAndSet() { |
134 |
< |
AtomicReferenceArray aa = new AtomicReferenceArray(SIZE); |
134 |
> |
AtomicReferenceArray<Item> aa = new AtomicReferenceArray<>(SIZE); |
135 |
|
for (int i = 0; i < SIZE; i++) { |
136 |
|
aa.set(i, one); |
137 |
|
assertTrue(aa.compareAndSet(i, one, two)); |
138 |
< |
assertTrue(aa.compareAndSet(i, two, m4)); |
139 |
< |
assertSame(m4, aa.get(i)); |
140 |
< |
assertFalse(aa.compareAndSet(i, m5, seven)); |
141 |
< |
assertSame(m4, aa.get(i)); |
142 |
< |
assertTrue(aa.compareAndSet(i, m4, seven)); |
138 |
> |
assertTrue(aa.compareAndSet(i, two, minusFour)); |
139 |
> |
assertSame(minusFour, aa.get(i)); |
140 |
> |
assertFalse(aa.compareAndSet(i, minusFive, seven)); |
141 |
> |
assertSame(minusFour, aa.get(i)); |
142 |
> |
assertTrue(aa.compareAndSet(i, minusFour, seven)); |
143 |
|
assertSame(seven, aa.get(i)); |
144 |
|
} |
145 |
|
} |
149 |
|
* to succeed |
150 |
|
*/ |
151 |
|
public void testCompareAndSetInMultipleThreads() throws InterruptedException { |
152 |
< |
final AtomicReferenceArray a = new AtomicReferenceArray(1); |
152 |
> |
final AtomicReferenceArray<Item> a = new AtomicReferenceArray<>(1); |
153 |
|
a.set(0, one); |
154 |
|
Thread t = new Thread(new CheckedRunnable() { |
155 |
|
public void realRun() { |
168 |
|
* repeated weakCompareAndSet succeeds in changing value when equal |
169 |
|
* to expected |
170 |
|
*/ |
171 |
+ |
@SuppressWarnings("deprecation") |
172 |
|
public void testWeakCompareAndSet() { |
173 |
< |
AtomicReferenceArray aa = new AtomicReferenceArray(SIZE); |
173 |
> |
AtomicReferenceArray<Item> aa = new AtomicReferenceArray<>(SIZE); |
174 |
|
for (int i = 0; i < SIZE; i++) { |
175 |
|
aa.set(i, one); |
176 |
|
do {} while (!aa.weakCompareAndSet(i, one, two)); |
177 |
< |
do {} while (!aa.weakCompareAndSet(i, two, m4)); |
178 |
< |
assertSame(m4, aa.get(i)); |
179 |
< |
do {} while (!aa.weakCompareAndSet(i, m4, seven)); |
177 |
> |
do {} while (!aa.weakCompareAndSet(i, two, minusFour)); |
178 |
> |
assertSame(minusFour, aa.get(i)); |
179 |
> |
do {} while (!aa.weakCompareAndSet(i, minusFour, seven)); |
180 |
|
assertSame(seven, aa.get(i)); |
181 |
|
} |
182 |
|
} |
185 |
|
* getAndSet returns previous value and sets to given value at given index |
186 |
|
*/ |
187 |
|
public void testGetAndSet() { |
188 |
< |
AtomicReferenceArray aa = new AtomicReferenceArray(SIZE); |
188 |
> |
AtomicReferenceArray<Item> aa = new AtomicReferenceArray<>(SIZE); |
189 |
|
for (int i = 0; i < SIZE; i++) { |
190 |
|
aa.set(i, one); |
191 |
|
assertSame(one, aa.getAndSet(i, zero)); |
192 |
< |
assertSame(zero, aa.getAndSet(i, m10)); |
193 |
< |
assertSame(m10, aa.getAndSet(i, one)); |
192 |
> |
assertSame(zero, aa.getAndSet(i, minusTen)); |
193 |
> |
assertSame(minusTen, aa.getAndSet(i, one)); |
194 |
|
} |
195 |
|
} |
196 |
|
|
197 |
|
/** |
198 |
< |
* a deserialized serialized array holds same values |
198 |
> |
* a deserialized/reserialized array holds same values in same order |
199 |
|
*/ |
200 |
|
public void testSerialization() throws Exception { |
201 |
< |
AtomicReferenceArray x = new AtomicReferenceArray(SIZE); |
201 |
> |
AtomicReferenceArray<Item> x = new AtomicReferenceArray<>(SIZE); |
202 |
|
for (int i = 0; i < SIZE; i++) { |
203 |
< |
x.set(i, new Integer(-i)); |
203 |
> |
x.set(i, minusOne); |
204 |
|
} |
205 |
< |
AtomicReferenceArray y = serialClone(x); |
205 |
> |
AtomicReferenceArray<Item> y = serialClone(x); |
206 |
|
assertNotSame(x, y); |
207 |
|
assertEquals(x.length(), y.length()); |
208 |
|
for (int i = 0; i < SIZE; i++) { |
214 |
|
* toString returns current value. |
215 |
|
*/ |
216 |
|
public void testToString() { |
217 |
< |
Integer[] a = { two, one, three, four, seven }; |
218 |
< |
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(a); |
217 |
> |
Item[] a = { two, one, three, four, seven }; |
218 |
> |
AtomicReferenceArray<Item> aa = new AtomicReferenceArray<>(a); |
219 |
|
assertEquals(Arrays.toString(a), aa.toString()); |
220 |
|
} |
221 |
+ |
|
222 |
|
} |