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1.1 |
/* |
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* Written by members of JCP JSR-166 Expert Group and released to the |
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* public domain. Use, modify, and redistribute this code in any way |
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* without acknowledgement. Other contributors include Andrew Wright, |
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* Jeffrey Hayes, Pat Fischer, 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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dl |
1.2 |
import java.io.*; |
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1.1 |
|
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1.3 |
public class ConcurrentLinkedQueueTest extends JSR166TestCase { |
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1.1 |
|
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public static void main(String[] args) { |
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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(ConcurrentLinkedQueueTest.class); |
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} |
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/** |
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* Create a queue of given size containing consecutive |
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* Integers 0 ... n. |
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*/ |
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dl |
1.3 |
private ConcurrentLinkedQueue populatedQueue(int n) { |
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1.1 |
ConcurrentLinkedQueue q = new ConcurrentLinkedQueue(); |
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assertTrue(q.isEmpty()); |
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for(int i = 0; i < n; ++i) |
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assertTrue(q.offer(new Integer(i))); |
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assertFalse(q.isEmpty()); |
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assertEquals(n, q.size()); |
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return q; |
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} |
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dl |
1.4 |
/** |
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* |
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*/ |
40 |
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public void testConstructor1() { |
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1.1 |
assertEquals(0, new ConcurrentLinkedQueue().size()); |
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} |
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dl |
1.4 |
/** |
45 |
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* |
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*/ |
47 |
dl |
1.1 |
public void testConstructor3() { |
48 |
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try { |
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ConcurrentLinkedQueue q = new ConcurrentLinkedQueue((Collection)null); |
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dl |
1.4 |
shouldThrow(); |
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1.1 |
} |
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catch (NullPointerException success) {} |
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} |
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1.4 |
/** |
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* |
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*/ |
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public void testConstructor4() { |
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1.1 |
try { |
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dl |
1.3 |
Integer[] ints = new Integer[SIZE]; |
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dl |
1.1 |
ConcurrentLinkedQueue q = new ConcurrentLinkedQueue(Arrays.asList(ints)); |
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dl |
1.4 |
shouldThrow(); |
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dl |
1.1 |
} |
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catch (NullPointerException success) {} |
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} |
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dl |
1.4 |
/** |
68 |
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* |
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*/ |
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public void testConstructor5() { |
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1.1 |
try { |
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dl |
1.3 |
Integer[] ints = new Integer[SIZE]; |
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for (int i = 0; i < SIZE-1; ++i) |
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1.1 |
ints[i] = new Integer(i); |
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ConcurrentLinkedQueue q = new ConcurrentLinkedQueue(Arrays.asList(ints)); |
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1.4 |
shouldThrow(); |
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1.1 |
} |
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catch (NullPointerException success) {} |
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} |
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1.4 |
/** |
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* |
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*/ |
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public void testConstructor6() { |
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1.1 |
try { |
86 |
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1.3 |
Integer[] ints = new Integer[SIZE]; |
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for (int i = 0; i < SIZE; ++i) |
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1.1 |
ints[i] = new Integer(i); |
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ConcurrentLinkedQueue q = new ConcurrentLinkedQueue(Arrays.asList(ints)); |
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1.3 |
for (int i = 0; i < SIZE; ++i) |
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1.1 |
assertEquals(ints[i], q.poll()); |
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} |
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finally {} |
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} |
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1.4 |
/** |
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* |
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*/ |
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dl |
1.1 |
public void testEmpty() { |
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ConcurrentLinkedQueue q = new ConcurrentLinkedQueue(); |
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assertTrue(q.isEmpty()); |
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dl |
1.3 |
q.add(one); |
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1.1 |
assertFalse(q.isEmpty()); |
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dl |
1.3 |
q.add(two); |
105 |
dl |
1.1 |
q.remove(); |
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q.remove(); |
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assertTrue(q.isEmpty()); |
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} |
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dl |
1.4 |
/** |
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* |
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*/ |
113 |
dl |
1.1 |
public void testSize() { |
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1.3 |
ConcurrentLinkedQueue q = populatedQueue(SIZE); |
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for (int i = 0; i < SIZE; ++i) { |
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assertEquals(SIZE-i, q.size()); |
117 |
dl |
1.1 |
q.remove(); |
118 |
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} |
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dl |
1.3 |
for (int i = 0; i < SIZE; ++i) { |
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1.1 |
assertEquals(i, q.size()); |
121 |
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q.add(new Integer(i)); |
122 |
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} |
123 |
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} |
124 |
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125 |
dl |
1.4 |
/** |
126 |
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* |
127 |
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*/ |
128 |
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public void testOfferNull() { |
129 |
dl |
1.1 |
try { |
130 |
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ConcurrentLinkedQueue q = new ConcurrentLinkedQueue(); |
131 |
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q.offer(null); |
132 |
dl |
1.4 |
shouldThrow(); |
133 |
dl |
1.1 |
} catch (NullPointerException success) { } |
134 |
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} |
135 |
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136 |
dl |
1.4 |
/** |
137 |
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* |
138 |
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*/ |
139 |
dl |
1.1 |
public void testOffer() { |
140 |
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ConcurrentLinkedQueue q = new ConcurrentLinkedQueue(); |
141 |
dl |
1.3 |
assertTrue(q.offer(zero)); |
142 |
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assertTrue(q.offer(one)); |
143 |
dl |
1.1 |
} |
144 |
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145 |
dl |
1.4 |
/** |
146 |
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* |
147 |
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*/ |
148 |
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public void testAdd() { |
149 |
dl |
1.1 |
ConcurrentLinkedQueue q = new ConcurrentLinkedQueue(); |
150 |
dl |
1.3 |
for (int i = 0; i < SIZE; ++i) { |
151 |
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1.1 |
assertEquals(i, q.size()); |
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assertTrue(q.add(new Integer(i))); |
153 |
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} |
154 |
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} |
155 |
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156 |
dl |
1.4 |
/** |
157 |
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* |
158 |
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*/ |
159 |
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public void testAddAll1() { |
160 |
dl |
1.1 |
try { |
161 |
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ConcurrentLinkedQueue q = new ConcurrentLinkedQueue(); |
162 |
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q.addAll(null); |
163 |
dl |
1.4 |
shouldThrow(); |
164 |
dl |
1.1 |
} |
165 |
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catch (NullPointerException success) {} |
166 |
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} |
167 |
dl |
1.4 |
/** |
168 |
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* |
169 |
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*/ |
170 |
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public void testAddAll2() { |
171 |
dl |
1.1 |
try { |
172 |
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ConcurrentLinkedQueue q = new ConcurrentLinkedQueue(); |
173 |
dl |
1.3 |
Integer[] ints = new Integer[SIZE]; |
174 |
dl |
1.1 |
q.addAll(Arrays.asList(ints)); |
175 |
dl |
1.4 |
shouldThrow(); |
176 |
dl |
1.1 |
} |
177 |
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catch (NullPointerException success) {} |
178 |
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} |
179 |
dl |
1.4 |
/** |
180 |
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* |
181 |
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*/ |
182 |
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public void testAddAll3() { |
183 |
dl |
1.1 |
try { |
184 |
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ConcurrentLinkedQueue q = new ConcurrentLinkedQueue(); |
185 |
dl |
1.3 |
Integer[] ints = new Integer[SIZE]; |
186 |
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for (int i = 0; i < SIZE-1; ++i) |
187 |
dl |
1.1 |
ints[i] = new Integer(i); |
188 |
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q.addAll(Arrays.asList(ints)); |
189 |
dl |
1.4 |
shouldThrow(); |
190 |
dl |
1.1 |
} |
191 |
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catch (NullPointerException success) {} |
192 |
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} |
193 |
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194 |
dl |
1.4 |
/** |
195 |
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* |
196 |
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*/ |
197 |
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public void testAddAll5() { |
198 |
dl |
1.1 |
try { |
199 |
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Integer[] empty = new Integer[0]; |
200 |
dl |
1.3 |
Integer[] ints = new Integer[SIZE]; |
201 |
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for (int i = 0; i < SIZE; ++i) |
202 |
dl |
1.1 |
ints[i] = new Integer(i); |
203 |
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ConcurrentLinkedQueue q = new ConcurrentLinkedQueue(); |
204 |
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assertFalse(q.addAll(Arrays.asList(empty))); |
205 |
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assertTrue(q.addAll(Arrays.asList(ints))); |
206 |
dl |
1.3 |
for (int i = 0; i < SIZE; ++i) |
207 |
dl |
1.1 |
assertEquals(ints[i], q.poll()); |
208 |
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} |
209 |
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finally {} |
210 |
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} |
211 |
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212 |
dl |
1.4 |
/** |
213 |
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* |
214 |
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*/ |
215 |
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public void testPoll() { |
216 |
dl |
1.3 |
ConcurrentLinkedQueue q = populatedQueue(SIZE); |
217 |
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for (int i = 0; i < SIZE; ++i) { |
218 |
dl |
1.1 |
assertEquals(i, ((Integer)q.poll()).intValue()); |
219 |
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} |
220 |
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assertNull(q.poll()); |
221 |
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} |
222 |
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223 |
dl |
1.4 |
/** |
224 |
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* |
225 |
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*/ |
226 |
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public void testPeek() { |
227 |
dl |
1.3 |
ConcurrentLinkedQueue q = populatedQueue(SIZE); |
228 |
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for (int i = 0; i < SIZE; ++i) { |
229 |
dl |
1.1 |
assertEquals(i, ((Integer)q.peek()).intValue()); |
230 |
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q.poll(); |
231 |
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assertTrue(q.peek() == null || |
232 |
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i != ((Integer)q.peek()).intValue()); |
233 |
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} |
234 |
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assertNull(q.peek()); |
235 |
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} |
236 |
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237 |
dl |
1.4 |
/** |
238 |
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* |
239 |
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*/ |
240 |
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public void testElement() { |
241 |
dl |
1.3 |
ConcurrentLinkedQueue q = populatedQueue(SIZE); |
242 |
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for (int i = 0; i < SIZE; ++i) { |
243 |
dl |
1.1 |
assertEquals(i, ((Integer)q.element()).intValue()); |
244 |
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q.poll(); |
245 |
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} |
246 |
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try { |
247 |
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q.element(); |
248 |
dl |
1.4 |
shouldThrow(); |
249 |
dl |
1.1 |
} |
250 |
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catch (NoSuchElementException success) {} |
251 |
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} |
252 |
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253 |
dl |
1.4 |
/** |
254 |
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* |
255 |
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*/ |
256 |
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public void testRemove() { |
257 |
dl |
1.3 |
ConcurrentLinkedQueue q = populatedQueue(SIZE); |
258 |
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for (int i = 0; i < SIZE; ++i) { |
259 |
dl |
1.1 |
assertEquals(i, ((Integer)q.remove()).intValue()); |
260 |
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} |
261 |
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try { |
262 |
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q.remove(); |
263 |
dl |
1.4 |
shouldThrow(); |
264 |
dl |
1.1 |
} catch (NoSuchElementException success){ |
265 |
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} |
266 |
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} |
267 |
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268 |
dl |
1.4 |
/** |
269 |
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* |
270 |
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*/ |
271 |
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public void testRemoveElement() { |
272 |
dl |
1.3 |
ConcurrentLinkedQueue q = populatedQueue(SIZE); |
273 |
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for (int i = 1; i < SIZE; i+=2) { |
274 |
dl |
1.1 |
assertTrue(q.remove(new Integer(i))); |
275 |
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} |
276 |
dl |
1.3 |
for (int i = 0; i < SIZE; i+=2) { |
277 |
dl |
1.1 |
assertTrue(q.remove(new Integer(i))); |
278 |
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assertFalse(q.remove(new Integer(i+1))); |
279 |
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} |
280 |
dl |
1.2 |
assertTrue(q.isEmpty()); |
281 |
dl |
1.1 |
} |
282 |
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|
283 |
dl |
1.4 |
/** |
284 |
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* |
285 |
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*/ |
286 |
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public void testContains() { |
287 |
dl |
1.3 |
ConcurrentLinkedQueue q = populatedQueue(SIZE); |
288 |
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for (int i = 0; i < SIZE; ++i) { |
289 |
dl |
1.1 |
assertTrue(q.contains(new Integer(i))); |
290 |
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q.poll(); |
291 |
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assertFalse(q.contains(new Integer(i))); |
292 |
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} |
293 |
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} |
294 |
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|
295 |
dl |
1.4 |
/** |
296 |
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* |
297 |
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*/ |
298 |
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public void testClear() { |
299 |
dl |
1.3 |
ConcurrentLinkedQueue q = populatedQueue(SIZE); |
300 |
dl |
1.1 |
q.clear(); |
301 |
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assertTrue(q.isEmpty()); |
302 |
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assertEquals(0, q.size()); |
303 |
dl |
1.3 |
q.add(one); |
304 |
dl |
1.1 |
assertFalse(q.isEmpty()); |
305 |
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q.clear(); |
306 |
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assertTrue(q.isEmpty()); |
307 |
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} |
308 |
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|
309 |
dl |
1.4 |
/** |
310 |
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* |
311 |
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*/ |
312 |
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public void testContainsAll() { |
313 |
dl |
1.3 |
ConcurrentLinkedQueue q = populatedQueue(SIZE); |
314 |
dl |
1.1 |
ConcurrentLinkedQueue p = new ConcurrentLinkedQueue(); |
315 |
dl |
1.3 |
for (int i = 0; i < SIZE; ++i) { |
316 |
dl |
1.1 |
assertTrue(q.containsAll(p)); |
317 |
|
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assertFalse(p.containsAll(q)); |
318 |
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p.add(new Integer(i)); |
319 |
|
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} |
320 |
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assertTrue(p.containsAll(q)); |
321 |
|
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} |
322 |
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|
323 |
dl |
1.4 |
/** |
324 |
|
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* |
325 |
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*/ |
326 |
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public void testRetainAll() { |
327 |
dl |
1.3 |
ConcurrentLinkedQueue q = populatedQueue(SIZE); |
328 |
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ConcurrentLinkedQueue p = populatedQueue(SIZE); |
329 |
|
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for (int i = 0; i < SIZE; ++i) { |
330 |
dl |
1.1 |
boolean changed = q.retainAll(p); |
331 |
|
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if (i == 0) |
332 |
|
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assertFalse(changed); |
333 |
|
|
else |
334 |
|
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assertTrue(changed); |
335 |
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|
|
336 |
|
|
assertTrue(q.containsAll(p)); |
337 |
dl |
1.3 |
assertEquals(SIZE-i, q.size()); |
338 |
dl |
1.1 |
p.remove(); |
339 |
|
|
} |
340 |
|
|
} |
341 |
|
|
|
342 |
dl |
1.4 |
/** |
343 |
|
|
* |
344 |
|
|
*/ |
345 |
|
|
public void testRemoveAll() { |
346 |
dl |
1.3 |
for (int i = 1; i < SIZE; ++i) { |
347 |
|
|
ConcurrentLinkedQueue q = populatedQueue(SIZE); |
348 |
|
|
ConcurrentLinkedQueue p = populatedQueue(i); |
349 |
dl |
1.1 |
assertTrue(q.removeAll(p)); |
350 |
dl |
1.3 |
assertEquals(SIZE-i, q.size()); |
351 |
dl |
1.1 |
for (int j = 0; j < i; ++j) { |
352 |
|
|
Integer I = (Integer)(p.remove()); |
353 |
|
|
assertFalse(q.contains(I)); |
354 |
|
|
} |
355 |
|
|
} |
356 |
|
|
} |
357 |
|
|
|
358 |
dl |
1.4 |
/** |
359 |
|
|
* |
360 |
|
|
*/ |
361 |
|
|
public void testToArray() { |
362 |
dl |
1.3 |
ConcurrentLinkedQueue q = populatedQueue(SIZE); |
363 |
dl |
1.1 |
Object[] o = q.toArray(); |
364 |
|
|
Arrays.sort(o); |
365 |
|
|
for(int i = 0; i < o.length; i++) |
366 |
|
|
assertEquals(o[i], q.poll()); |
367 |
|
|
} |
368 |
|
|
|
369 |
dl |
1.4 |
/** |
370 |
|
|
* |
371 |
|
|
*/ |
372 |
|
|
public void testToArray2() { |
373 |
dl |
1.3 |
ConcurrentLinkedQueue q = populatedQueue(SIZE); |
374 |
|
|
Integer[] ints = new Integer[SIZE]; |
375 |
dl |
1.1 |
ints = (Integer[])q.toArray(ints); |
376 |
|
|
Arrays.sort(ints); |
377 |
|
|
for(int i = 0; i < ints.length; i++) |
378 |
|
|
assertEquals(ints[i], q.poll()); |
379 |
|
|
} |
380 |
|
|
|
381 |
dl |
1.4 |
/** |
382 |
|
|
* |
383 |
|
|
*/ |
384 |
|
|
public void testIterator() { |
385 |
dl |
1.3 |
ConcurrentLinkedQueue q = populatedQueue(SIZE); |
386 |
dl |
1.1 |
int i = 0; |
387 |
|
|
Iterator it = q.iterator(); |
388 |
|
|
while(it.hasNext()) { |
389 |
|
|
assertTrue(q.contains(it.next())); |
390 |
|
|
++i; |
391 |
|
|
} |
392 |
dl |
1.3 |
assertEquals(i, SIZE); |
393 |
dl |
1.1 |
} |
394 |
|
|
|
395 |
dl |
1.4 |
/** |
396 |
|
|
* |
397 |
|
|
*/ |
398 |
dl |
1.1 |
public void testIteratorOrdering() { |
399 |
|
|
final ConcurrentLinkedQueue q = new ConcurrentLinkedQueue(); |
400 |
dl |
1.3 |
q.add(one); |
401 |
|
|
q.add(two); |
402 |
|
|
q.add(three); |
403 |
dl |
1.1 |
|
404 |
|
|
int k = 0; |
405 |
|
|
for (Iterator it = q.iterator(); it.hasNext();) { |
406 |
|
|
int i = ((Integer)(it.next())).intValue(); |
407 |
dl |
1.4 |
assertEquals(++k, i); |
408 |
dl |
1.1 |
} |
409 |
|
|
|
410 |
dl |
1.4 |
assertEquals(3, k); |
411 |
dl |
1.1 |
} |
412 |
|
|
|
413 |
dl |
1.4 |
/** |
414 |
|
|
* |
415 |
|
|
*/ |
416 |
dl |
1.1 |
public void testWeaklyConsistentIteration () { |
417 |
|
|
final ConcurrentLinkedQueue q = new ConcurrentLinkedQueue(); |
418 |
dl |
1.3 |
q.add(one); |
419 |
|
|
q.add(two); |
420 |
|
|
q.add(three); |
421 |
dl |
1.1 |
|
422 |
|
|
try { |
423 |
|
|
for (Iterator it = q.iterator(); it.hasNext();) { |
424 |
|
|
q.remove(); |
425 |
|
|
it.next(); |
426 |
|
|
} |
427 |
|
|
} |
428 |
|
|
catch (ConcurrentModificationException e) { |
429 |
dl |
1.4 |
shouldThrow(); |
430 |
dl |
1.1 |
} |
431 |
|
|
|
432 |
|
|
assertEquals("queue should be empty again", 0, q.size()); |
433 |
|
|
} |
434 |
|
|
|
435 |
dl |
1.4 |
/** |
436 |
|
|
* |
437 |
|
|
*/ |
438 |
dl |
1.1 |
public void testIteratorRemove () { |
439 |
|
|
final ConcurrentLinkedQueue q = new ConcurrentLinkedQueue(); |
440 |
dl |
1.3 |
q.add(one); |
441 |
|
|
q.add(two); |
442 |
|
|
q.add(three); |
443 |
dl |
1.1 |
Iterator it = q.iterator(); |
444 |
|
|
it.next(); |
445 |
|
|
it.remove(); |
446 |
|
|
it = q.iterator(); |
447 |
dl |
1.3 |
assertEquals(it.next(), two); |
448 |
|
|
assertEquals(it.next(), three); |
449 |
dl |
1.1 |
assertFalse(it.hasNext()); |
450 |
|
|
} |
451 |
|
|
|
452 |
|
|
|
453 |
dl |
1.4 |
/** |
454 |
|
|
* |
455 |
|
|
*/ |
456 |
|
|
public void testToString() { |
457 |
dl |
1.3 |
ConcurrentLinkedQueue q = populatedQueue(SIZE); |
458 |
dl |
1.1 |
String s = q.toString(); |
459 |
dl |
1.3 |
for (int i = 0; i < SIZE; ++i) { |
460 |
dl |
1.1 |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
461 |
|
|
} |
462 |
|
|
} |
463 |
dl |
1.2 |
|
464 |
dl |
1.4 |
/** |
465 |
|
|
* |
466 |
|
|
*/ |
467 |
dl |
1.2 |
public void testSerialization() { |
468 |
dl |
1.3 |
ConcurrentLinkedQueue q = populatedQueue(SIZE); |
469 |
dl |
1.2 |
try { |
470 |
|
|
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
471 |
|
|
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
472 |
|
|
out.writeObject(q); |
473 |
|
|
out.close(); |
474 |
|
|
|
475 |
|
|
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
476 |
|
|
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
477 |
|
|
ConcurrentLinkedQueue r = (ConcurrentLinkedQueue)in.readObject(); |
478 |
|
|
assertEquals(q.size(), r.size()); |
479 |
|
|
while (!q.isEmpty()) |
480 |
|
|
assertEquals(q.remove(), r.remove()); |
481 |
|
|
} catch(Exception e){ |
482 |
dl |
1.4 |
unexpectedException(); |
483 |
dl |
1.2 |
} |
484 |
|
|
} |
485 |
dl |
1.1 |
|
486 |
|
|
} |