1 |
dl |
1.1 |
/* |
2 |
dl |
1.8 |
* Written by Doug Lea with assistance from members of JCP JSR-166 |
3 |
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* Expert Group and released to the public domain, as explained at |
4 |
jsr166 |
1.41 |
* http://creativecommons.org/publicdomain/zero/1.0/ |
5 |
jsr166 |
1.12 |
* Other contributors include Andrew Wright, Jeffrey Hayes, |
6 |
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* Pat Fisher, Mike Judd. |
7 |
dl |
1.1 |
*/ |
8 |
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|
9 |
jsr166 |
1.54 |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
10 |
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11 |
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import java.util.ArrayList; |
12 |
jsr166 |
1.45 |
import java.util.Arrays; |
13 |
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import java.util.Collection; |
14 |
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import java.util.Comparator; |
15 |
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import java.util.Iterator; |
16 |
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import java.util.NoSuchElementException; |
17 |
jsr166 |
1.46 |
import java.util.Queue; |
18 |
jsr166 |
1.45 |
import java.util.concurrent.BlockingQueue; |
19 |
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import java.util.concurrent.CountDownLatch; |
20 |
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import java.util.concurrent.Executors; |
21 |
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import java.util.concurrent.ExecutorService; |
22 |
jsr166 |
1.54 |
import java.util.concurrent.PriorityBlockingQueue; |
23 |
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24 |
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import junit.framework.Test; |
25 |
dl |
1.1 |
|
26 |
dl |
1.3 |
public class PriorityBlockingQueueTest extends JSR166TestCase { |
27 |
jsr166 |
1.29 |
|
28 |
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public static class Generic extends BlockingQueueTest { |
29 |
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protected BlockingQueue emptyCollection() { |
30 |
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return new PriorityBlockingQueue(); |
31 |
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} |
32 |
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} |
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34 |
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public static class InitialCapacity extends BlockingQueueTest { |
35 |
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protected BlockingQueue emptyCollection() { |
36 |
jsr166 |
1.47 |
return new PriorityBlockingQueue(SIZE); |
37 |
jsr166 |
1.29 |
} |
38 |
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} |
39 |
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40 |
dl |
1.1 |
public static void main(String[] args) { |
41 |
jsr166 |
1.61 |
main(suite(), args); |
42 |
dl |
1.1 |
} |
43 |
jsr166 |
1.29 |
|
44 |
dl |
1.1 |
public static Test suite() { |
45 |
jsr166 |
1.29 |
return newTestSuite(PriorityBlockingQueueTest.class, |
46 |
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new Generic().testSuite(), |
47 |
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new InitialCapacity().testSuite()); |
48 |
dl |
1.1 |
} |
49 |
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|
50 |
dl |
1.3 |
/** Sample Comparator */ |
51 |
jsr166 |
1.12 |
static class MyReverseComparator implements Comparator { |
52 |
dl |
1.1 |
public int compare(Object x, Object y) { |
53 |
jsr166 |
1.24 |
return ((Comparable)y).compareTo(x); |
54 |
dl |
1.1 |
} |
55 |
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} |
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57 |
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/** |
58 |
jsr166 |
1.51 |
* Returns a new queue of given size containing consecutive |
59 |
jsr166 |
1.69 |
* Integers 0 ... n - 1. |
60 |
dl |
1.1 |
*/ |
61 |
jsr166 |
1.38 |
private PriorityBlockingQueue<Integer> populatedQueue(int n) { |
62 |
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PriorityBlockingQueue<Integer> q = |
63 |
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new PriorityBlockingQueue<Integer>(n); |
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dl |
1.1 |
assertTrue(q.isEmpty()); |
65 |
jsr166 |
1.64 |
for (int i = n - 1; i >= 0; i -= 2) |
66 |
jsr166 |
1.16 |
assertTrue(q.offer(new Integer(i))); |
67 |
jsr166 |
1.56 |
for (int i = (n & 1); i < n; i += 2) |
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jsr166 |
1.16 |
assertTrue(q.offer(new Integer(i))); |
69 |
dl |
1.1 |
assertFalse(q.isEmpty()); |
70 |
jsr166 |
1.59 |
assertEquals(Integer.MAX_VALUE, q.remainingCapacity()); |
71 |
jsr166 |
1.16 |
assertEquals(n, q.size()); |
72 |
jsr166 |
1.69 |
assertEquals((Integer) 0, q.peek()); |
73 |
dl |
1.1 |
return q; |
74 |
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} |
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jsr166 |
1.12 |
|
76 |
dl |
1.5 |
/** |
77 |
dl |
1.6 |
* A new queue has unbounded capacity |
78 |
dl |
1.5 |
*/ |
79 |
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public void testConstructor1() { |
80 |
jsr166 |
1.59 |
assertEquals(Integer.MAX_VALUE, |
81 |
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new PriorityBlockingQueue(SIZE).remainingCapacity()); |
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dl |
1.1 |
} |
83 |
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|
84 |
dl |
1.5 |
/** |
85 |
jsr166 |
1.19 |
* Constructor throws IAE if capacity argument nonpositive |
86 |
dl |
1.5 |
*/ |
87 |
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public void testConstructor2() { |
88 |
dl |
1.1 |
try { |
89 |
jsr166 |
1.45 |
new PriorityBlockingQueue(0); |
90 |
dl |
1.5 |
shouldThrow(); |
91 |
jsr166 |
1.15 |
} catch (IllegalArgumentException success) {} |
92 |
dl |
1.1 |
} |
93 |
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|
94 |
dl |
1.5 |
/** |
95 |
dl |
1.6 |
* Initializing from null Collection throws NPE |
96 |
dl |
1.5 |
*/ |
97 |
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public void testConstructor3() { |
98 |
dl |
1.1 |
try { |
99 |
jsr166 |
1.45 |
new PriorityBlockingQueue(null); |
100 |
dl |
1.5 |
shouldThrow(); |
101 |
jsr166 |
1.15 |
} catch (NullPointerException success) {} |
102 |
dl |
1.1 |
} |
103 |
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|
104 |
dl |
1.5 |
/** |
105 |
dl |
1.6 |
* Initializing from Collection of null elements throws NPE |
106 |
dl |
1.5 |
*/ |
107 |
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public void testConstructor4() { |
108 |
jsr166 |
1.45 |
Collection<Integer> elements = Arrays.asList(new Integer[SIZE]); |
109 |
dl |
1.1 |
try { |
110 |
jsr166 |
1.45 |
new PriorityBlockingQueue(elements); |
111 |
dl |
1.5 |
shouldThrow(); |
112 |
jsr166 |
1.15 |
} catch (NullPointerException success) {} |
113 |
dl |
1.1 |
} |
114 |
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|
115 |
dl |
1.5 |
/** |
116 |
dl |
1.6 |
* Initializing from Collection with some null elements throws NPE |
117 |
dl |
1.5 |
*/ |
118 |
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public void testConstructor5() { |
119 |
jsr166 |
1.45 |
Integer[] ints = new Integer[SIZE]; |
120 |
jsr166 |
1.63 |
for (int i = 0; i < SIZE - 1; ++i) |
121 |
jsr166 |
1.45 |
ints[i] = i; |
122 |
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Collection<Integer> elements = Arrays.asList(ints); |
123 |
dl |
1.1 |
try { |
124 |
jsr166 |
1.45 |
new PriorityBlockingQueue(elements); |
125 |
dl |
1.5 |
shouldThrow(); |
126 |
jsr166 |
1.15 |
} catch (NullPointerException success) {} |
127 |
dl |
1.1 |
} |
128 |
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|
129 |
dl |
1.5 |
/** |
130 |
dl |
1.6 |
* Queue contains all elements of collection used to initialize |
131 |
dl |
1.5 |
*/ |
132 |
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public void testConstructor6() { |
133 |
jsr166 |
1.15 |
Integer[] ints = new Integer[SIZE]; |
134 |
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for (int i = 0; i < SIZE; ++i) |
135 |
jsr166 |
1.45 |
ints[i] = i; |
136 |
jsr166 |
1.15 |
PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints)); |
137 |
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for (int i = 0; i < SIZE; ++i) |
138 |
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assertEquals(ints[i], q.poll()); |
139 |
dl |
1.1 |
} |
140 |
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|
141 |
dl |
1.5 |
/** |
142 |
dl |
1.6 |
* The comparator used in constructor is used |
143 |
dl |
1.5 |
*/ |
144 |
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public void testConstructor7() { |
145 |
jsr166 |
1.15 |
MyReverseComparator cmp = new MyReverseComparator(); |
146 |
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PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE, cmp); |
147 |
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assertEquals(cmp, q.comparator()); |
148 |
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Integer[] ints = new Integer[SIZE]; |
149 |
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for (int i = 0; i < SIZE; ++i) |
150 |
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ints[i] = new Integer(i); |
151 |
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q.addAll(Arrays.asList(ints)); |
152 |
jsr166 |
1.63 |
for (int i = SIZE - 1; i >= 0; --i) |
153 |
jsr166 |
1.15 |
assertEquals(ints[i], q.poll()); |
154 |
dl |
1.1 |
} |
155 |
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|
156 |
dl |
1.5 |
/** |
157 |
dl |
1.6 |
* isEmpty is true before add, false after |
158 |
dl |
1.5 |
*/ |
159 |
dl |
1.1 |
public void testEmpty() { |
160 |
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PriorityBlockingQueue q = new PriorityBlockingQueue(2); |
161 |
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assertTrue(q.isEmpty()); |
162 |
jsr166 |
1.59 |
assertEquals(Integer.MAX_VALUE, q.remainingCapacity()); |
163 |
dl |
1.6 |
q.add(one); |
164 |
dl |
1.1 |
assertFalse(q.isEmpty()); |
165 |
dl |
1.6 |
q.add(two); |
166 |
dl |
1.1 |
q.remove(); |
167 |
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q.remove(); |
168 |
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assertTrue(q.isEmpty()); |
169 |
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} |
170 |
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|
171 |
dl |
1.5 |
/** |
172 |
jsr166 |
1.59 |
* remainingCapacity() always returns Integer.MAX_VALUE |
173 |
dl |
1.5 |
*/ |
174 |
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public void testRemainingCapacity() { |
175 |
jsr166 |
1.59 |
BlockingQueue q = populatedQueue(SIZE); |
176 |
dl |
1.3 |
for (int i = 0; i < SIZE; ++i) { |
177 |
jsr166 |
1.59 |
assertEquals(Integer.MAX_VALUE, q.remainingCapacity()); |
178 |
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assertEquals(SIZE - i, q.size()); |
179 |
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assertEquals(i, q.remove()); |
180 |
dl |
1.1 |
} |
181 |
dl |
1.3 |
for (int i = 0; i < SIZE; ++i) { |
182 |
jsr166 |
1.59 |
assertEquals(Integer.MAX_VALUE, q.remainingCapacity()); |
183 |
dl |
1.1 |
assertEquals(i, q.size()); |
184 |
jsr166 |
1.59 |
assertTrue(q.add(i)); |
185 |
dl |
1.1 |
} |
186 |
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} |
187 |
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|
188 |
dl |
1.5 |
/** |
189 |
dl |
1.6 |
* Offer of comparable element succeeds |
190 |
dl |
1.5 |
*/ |
191 |
dl |
1.1 |
public void testOffer() { |
192 |
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PriorityBlockingQueue q = new PriorityBlockingQueue(1); |
193 |
dl |
1.6 |
assertTrue(q.offer(zero)); |
194 |
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assertTrue(q.offer(one)); |
195 |
dl |
1.1 |
} |
196 |
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|
197 |
dl |
1.5 |
/** |
198 |
dl |
1.6 |
* Offer of non-Comparable throws CCE |
199 |
dl |
1.5 |
*/ |
200 |
dl |
1.1 |
public void testOfferNonComparable() { |
201 |
jsr166 |
1.60 |
PriorityBlockingQueue q = new PriorityBlockingQueue(1); |
202 |
dl |
1.1 |
try { |
203 |
|
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q.offer(new Object()); |
204 |
dl |
1.5 |
shouldThrow(); |
205 |
jsr166 |
1.67 |
} catch (ClassCastException success) { |
206 |
|
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assertTrue(q.isEmpty()); |
207 |
|
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assertEquals(0, q.size()); |
208 |
|
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assertNull(q.poll()); |
209 |
|
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} |
210 |
dl |
1.1 |
} |
211 |
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|
212 |
dl |
1.5 |
/** |
213 |
dl |
1.6 |
* add of comparable succeeds |
214 |
dl |
1.5 |
*/ |
215 |
|
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public void testAdd() { |
216 |
dl |
1.3 |
PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE); |
217 |
|
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for (int i = 0; i < SIZE; ++i) { |
218 |
dl |
1.1 |
assertEquals(i, q.size()); |
219 |
|
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assertTrue(q.add(new Integer(i))); |
220 |
|
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} |
221 |
|
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} |
222 |
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|
223 |
dl |
1.5 |
/** |
224 |
dl |
1.7 |
* addAll(this) throws IAE |
225 |
|
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*/ |
226 |
|
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public void testAddAllSelf() { |
227 |
jsr166 |
1.62 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
228 |
dl |
1.7 |
try { |
229 |
|
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q.addAll(q); |
230 |
|
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shouldThrow(); |
231 |
jsr166 |
1.15 |
} catch (IllegalArgumentException success) {} |
232 |
dl |
1.7 |
} |
233 |
|
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|
234 |
dl |
1.5 |
/** |
235 |
dl |
1.6 |
* addAll of a collection with any null elements throws NPE after |
236 |
|
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* possibly adding some elements |
237 |
dl |
1.5 |
*/ |
238 |
|
|
public void testAddAll3() { |
239 |
jsr166 |
1.62 |
PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE); |
240 |
|
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Integer[] ints = new Integer[SIZE]; |
241 |
jsr166 |
1.63 |
for (int i = 0; i < SIZE - 1; ++i) |
242 |
jsr166 |
1.62 |
ints[i] = new Integer(i); |
243 |
dl |
1.1 |
try { |
244 |
|
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q.addAll(Arrays.asList(ints)); |
245 |
dl |
1.5 |
shouldThrow(); |
246 |
jsr166 |
1.15 |
} catch (NullPointerException success) {} |
247 |
dl |
1.1 |
} |
248 |
|
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|
249 |
dl |
1.5 |
/** |
250 |
dl |
1.6 |
* Queue contains all elements of successful addAll |
251 |
dl |
1.5 |
*/ |
252 |
|
|
public void testAddAll5() { |
253 |
jsr166 |
1.15 |
Integer[] empty = new Integer[0]; |
254 |
|
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Integer[] ints = new Integer[SIZE]; |
255 |
jsr166 |
1.63 |
for (int i = SIZE - 1; i >= 0; --i) |
256 |
jsr166 |
1.15 |
ints[i] = new Integer(i); |
257 |
|
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PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE); |
258 |
|
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assertFalse(q.addAll(Arrays.asList(empty))); |
259 |
|
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assertTrue(q.addAll(Arrays.asList(ints))); |
260 |
|
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for (int i = 0; i < SIZE; ++i) |
261 |
|
|
assertEquals(ints[i], q.poll()); |
262 |
dl |
1.1 |
} |
263 |
|
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|
264 |
dl |
1.5 |
/** |
265 |
dl |
1.6 |
* all elements successfully put are contained |
266 |
dl |
1.5 |
*/ |
267 |
jsr166 |
1.42 |
public void testPut() { |
268 |
|
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PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE); |
269 |
|
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for (int i = 0; i < SIZE; ++i) { |
270 |
jsr166 |
1.57 |
Integer x = new Integer(i); |
271 |
|
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q.put(x); |
272 |
|
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assertTrue(q.contains(x)); |
273 |
jsr166 |
1.42 |
} |
274 |
|
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assertEquals(SIZE, q.size()); |
275 |
dl |
1.1 |
} |
276 |
|
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|
277 |
dl |
1.5 |
/** |
278 |
dl |
1.6 |
* put doesn't block waiting for take |
279 |
dl |
1.5 |
*/ |
280 |
jsr166 |
1.15 |
public void testPutWithTake() throws InterruptedException { |
281 |
dl |
1.1 |
final PriorityBlockingQueue q = new PriorityBlockingQueue(2); |
282 |
jsr166 |
1.15 |
final int size = 4; |
283 |
jsr166 |
1.44 |
Thread t = newStartedThread(new CheckedRunnable() { |
284 |
jsr166 |
1.15 |
public void realRun() { |
285 |
|
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for (int i = 0; i < size; i++) |
286 |
|
|
q.put(new Integer(0)); |
287 |
|
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}}); |
288 |
|
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|
289 |
jsr166 |
1.44 |
awaitTermination(t); |
290 |
|
|
assertEquals(size, q.size()); |
291 |
jsr166 |
1.15 |
q.take(); |
292 |
dl |
1.1 |
} |
293 |
|
|
|
294 |
dl |
1.5 |
/** |
295 |
dl |
1.6 |
* timed offer does not time out |
296 |
dl |
1.5 |
*/ |
297 |
jsr166 |
1.15 |
public void testTimedOffer() throws InterruptedException { |
298 |
dl |
1.1 |
final PriorityBlockingQueue q = new PriorityBlockingQueue(2); |
299 |
jsr166 |
1.44 |
Thread t = newStartedThread(new CheckedRunnable() { |
300 |
jsr166 |
1.18 |
public void realRun() { |
301 |
|
|
q.put(new Integer(0)); |
302 |
|
|
q.put(new Integer(0)); |
303 |
jsr166 |
1.22 |
assertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, MILLISECONDS)); |
304 |
|
|
assertTrue(q.offer(new Integer(0), LONG_DELAY_MS, MILLISECONDS)); |
305 |
jsr166 |
1.18 |
}}); |
306 |
jsr166 |
1.12 |
|
307 |
jsr166 |
1.44 |
awaitTermination(t); |
308 |
dl |
1.1 |
} |
309 |
|
|
|
310 |
dl |
1.5 |
/** |
311 |
dl |
1.6 |
* take retrieves elements in priority order |
312 |
dl |
1.5 |
*/ |
313 |
jsr166 |
1.15 |
public void testTake() throws InterruptedException { |
314 |
|
|
PriorityBlockingQueue q = populatedQueue(SIZE); |
315 |
|
|
for (int i = 0; i < SIZE; ++i) { |
316 |
jsr166 |
1.24 |
assertEquals(i, q.take()); |
317 |
jsr166 |
1.15 |
} |
318 |
dl |
1.1 |
} |
319 |
|
|
|
320 |
dl |
1.5 |
/** |
321 |
dl |
1.6 |
* Take removes existing elements until empty, then blocks interruptibly |
322 |
dl |
1.5 |
*/ |
323 |
jsr166 |
1.15 |
public void testBlockingTake() throws InterruptedException { |
324 |
jsr166 |
1.23 |
final PriorityBlockingQueue q = populatedQueue(SIZE); |
325 |
jsr166 |
1.44 |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
326 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
327 |
jsr166 |
1.15 |
public void realRun() throws InterruptedException { |
328 |
|
|
for (int i = 0; i < SIZE; ++i) { |
329 |
jsr166 |
1.23 |
assertEquals(i, q.take()); |
330 |
jsr166 |
1.15 |
} |
331 |
jsr166 |
1.44 |
|
332 |
|
|
Thread.currentThread().interrupt(); |
333 |
jsr166 |
1.23 |
try { |
334 |
|
|
q.take(); |
335 |
|
|
shouldThrow(); |
336 |
|
|
} catch (InterruptedException success) {} |
337 |
jsr166 |
1.44 |
assertFalse(Thread.interrupted()); |
338 |
|
|
|
339 |
|
|
pleaseInterrupt.countDown(); |
340 |
|
|
try { |
341 |
|
|
q.take(); |
342 |
|
|
shouldThrow(); |
343 |
|
|
} catch (InterruptedException success) {} |
344 |
|
|
assertFalse(Thread.interrupted()); |
345 |
jsr166 |
1.15 |
}}); |
346 |
|
|
|
347 |
jsr166 |
1.44 |
await(pleaseInterrupt); |
348 |
|
|
assertThreadStaysAlive(t); |
349 |
jsr166 |
1.15 |
t.interrupt(); |
350 |
jsr166 |
1.44 |
awaitTermination(t); |
351 |
dl |
1.1 |
} |
352 |
|
|
|
353 |
dl |
1.5 |
/** |
354 |
dl |
1.6 |
* poll succeeds unless empty |
355 |
dl |
1.5 |
*/ |
356 |
|
|
public void testPoll() { |
357 |
dl |
1.3 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
358 |
|
|
for (int i = 0; i < SIZE; ++i) { |
359 |
jsr166 |
1.24 |
assertEquals(i, q.poll()); |
360 |
dl |
1.1 |
} |
361 |
jsr166 |
1.16 |
assertNull(q.poll()); |
362 |
dl |
1.1 |
} |
363 |
|
|
|
364 |
dl |
1.5 |
/** |
365 |
jsr166 |
1.34 |
* timed poll with zero timeout succeeds when non-empty, else times out |
366 |
dl |
1.5 |
*/ |
367 |
jsr166 |
1.15 |
public void testTimedPoll0() throws InterruptedException { |
368 |
|
|
PriorityBlockingQueue q = populatedQueue(SIZE); |
369 |
|
|
for (int i = 0; i < SIZE; ++i) { |
370 |
jsr166 |
1.24 |
assertEquals(i, q.poll(0, MILLISECONDS)); |
371 |
jsr166 |
1.15 |
} |
372 |
jsr166 |
1.17 |
assertNull(q.poll(0, MILLISECONDS)); |
373 |
dl |
1.1 |
} |
374 |
|
|
|
375 |
dl |
1.5 |
/** |
376 |
jsr166 |
1.34 |
* timed poll with nonzero timeout succeeds when non-empty, else times out |
377 |
dl |
1.5 |
*/ |
378 |
jsr166 |
1.15 |
public void testTimedPoll() throws InterruptedException { |
379 |
jsr166 |
1.44 |
PriorityBlockingQueue<Integer> q = populatedQueue(SIZE); |
380 |
jsr166 |
1.15 |
for (int i = 0; i < SIZE; ++i) { |
381 |
jsr166 |
1.44 |
long startTime = System.nanoTime(); |
382 |
|
|
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
383 |
|
|
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
384 |
|
|
} |
385 |
|
|
long startTime = System.nanoTime(); |
386 |
|
|
assertNull(q.poll(timeoutMillis(), MILLISECONDS)); |
387 |
|
|
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
388 |
|
|
checkEmpty(q); |
389 |
dl |
1.1 |
} |
390 |
|
|
|
391 |
dl |
1.5 |
/** |
392 |
dl |
1.6 |
* Interrupted timed poll throws InterruptedException instead of |
393 |
|
|
* returning timeout status |
394 |
dl |
1.5 |
*/ |
395 |
jsr166 |
1.15 |
public void testInterruptedTimedPoll() throws InterruptedException { |
396 |
jsr166 |
1.40 |
final BlockingQueue<Integer> q = populatedQueue(SIZE); |
397 |
|
|
final CountDownLatch aboutToWait = new CountDownLatch(1); |
398 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
399 |
jsr166 |
1.15 |
public void realRun() throws InterruptedException { |
400 |
jsr166 |
1.66 |
long startTime = System.nanoTime(); |
401 |
jsr166 |
1.15 |
for (int i = 0; i < SIZE; ++i) { |
402 |
jsr166 |
1.40 |
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
403 |
jsr166 |
1.15 |
} |
404 |
jsr166 |
1.40 |
aboutToWait.countDown(); |
405 |
jsr166 |
1.15 |
try { |
406 |
jsr166 |
1.44 |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
407 |
jsr166 |
1.18 |
shouldThrow(); |
408 |
jsr166 |
1.40 |
} catch (InterruptedException success) { |
409 |
jsr166 |
1.66 |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
410 |
jsr166 |
1.40 |
} |
411 |
jsr166 |
1.15 |
}}); |
412 |
|
|
|
413 |
jsr166 |
1.40 |
aboutToWait.await(); |
414 |
jsr166 |
1.68 |
waitForThreadToEnterWaitState(t); |
415 |
jsr166 |
1.15 |
t.interrupt(); |
416 |
jsr166 |
1.66 |
awaitTermination(t); |
417 |
dl |
1.1 |
} |
418 |
|
|
|
419 |
dl |
1.5 |
/** |
420 |
dl |
1.6 |
* peek returns next element, or null if empty |
421 |
dl |
1.5 |
*/ |
422 |
|
|
public void testPeek() { |
423 |
dl |
1.3 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
424 |
|
|
for (int i = 0; i < SIZE; ++i) { |
425 |
jsr166 |
1.24 |
assertEquals(i, q.peek()); |
426 |
|
|
assertEquals(i, q.poll()); |
427 |
dl |
1.1 |
assertTrue(q.peek() == null || |
428 |
jsr166 |
1.24 |
!q.peek().equals(i)); |
429 |
dl |
1.1 |
} |
430 |
jsr166 |
1.16 |
assertNull(q.peek()); |
431 |
dl |
1.1 |
} |
432 |
|
|
|
433 |
dl |
1.5 |
/** |
434 |
dl |
1.6 |
* element returns next element, or throws NSEE if empty |
435 |
dl |
1.5 |
*/ |
436 |
|
|
public void testElement() { |
437 |
dl |
1.3 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
438 |
|
|
for (int i = 0; i < SIZE; ++i) { |
439 |
jsr166 |
1.24 |
assertEquals(i, q.element()); |
440 |
|
|
assertEquals(i, q.poll()); |
441 |
dl |
1.1 |
} |
442 |
|
|
try { |
443 |
|
|
q.element(); |
444 |
dl |
1.5 |
shouldThrow(); |
445 |
jsr166 |
1.15 |
} catch (NoSuchElementException success) {} |
446 |
dl |
1.1 |
} |
447 |
|
|
|
448 |
dl |
1.5 |
/** |
449 |
dl |
1.6 |
* remove removes next element, or throws NSEE if empty |
450 |
dl |
1.5 |
*/ |
451 |
|
|
public void testRemove() { |
452 |
dl |
1.3 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
453 |
|
|
for (int i = 0; i < SIZE; ++i) { |
454 |
jsr166 |
1.24 |
assertEquals(i, q.remove()); |
455 |
dl |
1.1 |
} |
456 |
|
|
try { |
457 |
|
|
q.remove(); |
458 |
dl |
1.5 |
shouldThrow(); |
459 |
jsr166 |
1.15 |
} catch (NoSuchElementException success) {} |
460 |
dl |
1.1 |
} |
461 |
|
|
|
462 |
dl |
1.5 |
/** |
463 |
dl |
1.6 |
* contains(x) reports true when elements added but not yet removed |
464 |
dl |
1.5 |
*/ |
465 |
|
|
public void testContains() { |
466 |
dl |
1.3 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
467 |
|
|
for (int i = 0; i < SIZE; ++i) { |
468 |
dl |
1.1 |
assertTrue(q.contains(new Integer(i))); |
469 |
|
|
q.poll(); |
470 |
|
|
assertFalse(q.contains(new Integer(i))); |
471 |
|
|
} |
472 |
|
|
} |
473 |
|
|
|
474 |
dl |
1.5 |
/** |
475 |
dl |
1.6 |
* clear removes all elements |
476 |
dl |
1.5 |
*/ |
477 |
|
|
public void testClear() { |
478 |
dl |
1.3 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
479 |
dl |
1.1 |
q.clear(); |
480 |
|
|
assertTrue(q.isEmpty()); |
481 |
|
|
assertEquals(0, q.size()); |
482 |
dl |
1.11 |
q.add(one); |
483 |
dl |
1.1 |
assertFalse(q.isEmpty()); |
484 |
dl |
1.11 |
assertTrue(q.contains(one)); |
485 |
dl |
1.1 |
q.clear(); |
486 |
|
|
assertTrue(q.isEmpty()); |
487 |
|
|
} |
488 |
|
|
|
489 |
dl |
1.5 |
/** |
490 |
dl |
1.6 |
* containsAll(c) is true when c contains a subset of elements |
491 |
dl |
1.5 |
*/ |
492 |
|
|
public void testContainsAll() { |
493 |
dl |
1.3 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
494 |
|
|
PriorityBlockingQueue p = new PriorityBlockingQueue(SIZE); |
495 |
|
|
for (int i = 0; i < SIZE; ++i) { |
496 |
dl |
1.1 |
assertTrue(q.containsAll(p)); |
497 |
|
|
assertFalse(p.containsAll(q)); |
498 |
|
|
p.add(new Integer(i)); |
499 |
|
|
} |
500 |
|
|
assertTrue(p.containsAll(q)); |
501 |
|
|
} |
502 |
|
|
|
503 |
dl |
1.5 |
/** |
504 |
dl |
1.6 |
* retainAll(c) retains only those elements of c and reports true if changed |
505 |
dl |
1.5 |
*/ |
506 |
|
|
public void testRetainAll() { |
507 |
dl |
1.3 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
508 |
|
|
PriorityBlockingQueue p = populatedQueue(SIZE); |
509 |
|
|
for (int i = 0; i < SIZE; ++i) { |
510 |
dl |
1.1 |
boolean changed = q.retainAll(p); |
511 |
|
|
if (i == 0) |
512 |
|
|
assertFalse(changed); |
513 |
|
|
else |
514 |
|
|
assertTrue(changed); |
515 |
|
|
|
516 |
|
|
assertTrue(q.containsAll(p)); |
517 |
jsr166 |
1.63 |
assertEquals(SIZE - i, q.size()); |
518 |
dl |
1.1 |
p.remove(); |
519 |
|
|
} |
520 |
|
|
} |
521 |
|
|
|
522 |
dl |
1.5 |
/** |
523 |
dl |
1.6 |
* removeAll(c) removes only those elements of c and reports true if changed |
524 |
dl |
1.5 |
*/ |
525 |
|
|
public void testRemoveAll() { |
526 |
dl |
1.3 |
for (int i = 1; i < SIZE; ++i) { |
527 |
|
|
PriorityBlockingQueue q = populatedQueue(SIZE); |
528 |
|
|
PriorityBlockingQueue p = populatedQueue(i); |
529 |
dl |
1.1 |
assertTrue(q.removeAll(p)); |
530 |
jsr166 |
1.63 |
assertEquals(SIZE - i, q.size()); |
531 |
dl |
1.1 |
for (int j = 0; j < i; ++j) { |
532 |
jsr166 |
1.57 |
Integer x = (Integer)(p.remove()); |
533 |
|
|
assertFalse(q.contains(x)); |
534 |
dl |
1.1 |
} |
535 |
|
|
} |
536 |
|
|
} |
537 |
|
|
|
538 |
dl |
1.5 |
/** |
539 |
jsr166 |
1.30 |
* toArray contains all elements |
540 |
dl |
1.5 |
*/ |
541 |
jsr166 |
1.15 |
public void testToArray() throws InterruptedException { |
542 |
dl |
1.3 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
543 |
jsr166 |
1.16 |
Object[] o = q.toArray(); |
544 |
dl |
1.1 |
Arrays.sort(o); |
545 |
jsr166 |
1.16 |
for (int i = 0; i < o.length; i++) |
546 |
jsr166 |
1.37 |
assertSame(o[i], q.take()); |
547 |
dl |
1.1 |
} |
548 |
|
|
|
549 |
dl |
1.5 |
/** |
550 |
dl |
1.6 |
* toArray(a) contains all elements |
551 |
dl |
1.5 |
*/ |
552 |
jsr166 |
1.15 |
public void testToArray2() throws InterruptedException { |
553 |
jsr166 |
1.38 |
PriorityBlockingQueue<Integer> q = populatedQueue(SIZE); |
554 |
jsr166 |
1.16 |
Integer[] ints = new Integer[SIZE]; |
555 |
jsr166 |
1.38 |
Integer[] array = q.toArray(ints); |
556 |
|
|
assertSame(ints, array); |
557 |
dl |
1.1 |
Arrays.sort(ints); |
558 |
jsr166 |
1.15 |
for (int i = 0; i < ints.length; i++) |
559 |
jsr166 |
1.37 |
assertSame(ints[i], q.take()); |
560 |
dl |
1.1 |
} |
561 |
dl |
1.7 |
|
562 |
|
|
/** |
563 |
jsr166 |
1.35 |
* toArray(incompatible array type) throws ArrayStoreException |
564 |
dl |
1.7 |
*/ |
565 |
|
|
public void testToArray1_BadArg() { |
566 |
jsr166 |
1.24 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
567 |
jsr166 |
1.16 |
try { |
568 |
jsr166 |
1.35 |
q.toArray(new String[10]); |
569 |
jsr166 |
1.16 |
shouldThrow(); |
570 |
jsr166 |
1.19 |
} catch (ArrayStoreException success) {} |
571 |
dl |
1.7 |
} |
572 |
jsr166 |
1.12 |
|
573 |
dl |
1.5 |
/** |
574 |
dl |
1.6 |
* iterator iterates through all elements |
575 |
dl |
1.5 |
*/ |
576 |
|
|
public void testIterator() { |
577 |
dl |
1.3 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
578 |
jsr166 |
1.16 |
Iterator it = q.iterator(); |
579 |
jsr166 |
1.58 |
int i; |
580 |
|
|
for (i = 0; it.hasNext(); i++) |
581 |
dl |
1.1 |
assertTrue(q.contains(it.next())); |
582 |
dl |
1.3 |
assertEquals(i, SIZE); |
583 |
jsr166 |
1.58 |
assertIteratorExhausted(it); |
584 |
|
|
} |
585 |
|
|
|
586 |
|
|
/** |
587 |
|
|
* iterator of empty collection has no elements |
588 |
|
|
*/ |
589 |
|
|
public void testEmptyIterator() { |
590 |
|
|
assertIteratorExhausted(new PriorityBlockingQueue().iterator()); |
591 |
dl |
1.1 |
} |
592 |
|
|
|
593 |
dl |
1.5 |
/** |
594 |
dl |
1.6 |
* iterator.remove removes current element |
595 |
dl |
1.5 |
*/ |
596 |
jsr166 |
1.26 |
public void testIteratorRemove() { |
597 |
dl |
1.1 |
final PriorityBlockingQueue q = new PriorityBlockingQueue(3); |
598 |
|
|
q.add(new Integer(2)); |
599 |
|
|
q.add(new Integer(1)); |
600 |
|
|
q.add(new Integer(3)); |
601 |
|
|
|
602 |
|
|
Iterator it = q.iterator(); |
603 |
|
|
it.next(); |
604 |
|
|
it.remove(); |
605 |
|
|
|
606 |
|
|
it = q.iterator(); |
607 |
|
|
assertEquals(it.next(), new Integer(2)); |
608 |
|
|
assertEquals(it.next(), new Integer(3)); |
609 |
|
|
assertFalse(it.hasNext()); |
610 |
|
|
} |
611 |
|
|
|
612 |
dl |
1.5 |
/** |
613 |
dl |
1.6 |
* toString contains toStrings of elements |
614 |
dl |
1.5 |
*/ |
615 |
|
|
public void testToString() { |
616 |
dl |
1.3 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
617 |
dl |
1.1 |
String s = q.toString(); |
618 |
dl |
1.3 |
for (int i = 0; i < SIZE; ++i) { |
619 |
jsr166 |
1.44 |
assertTrue(s.contains(String.valueOf(i))); |
620 |
dl |
1.1 |
} |
621 |
jsr166 |
1.12 |
} |
622 |
dl |
1.1 |
|
623 |
dl |
1.5 |
/** |
624 |
jsr166 |
1.44 |
* timed poll transfers elements across Executor tasks |
625 |
dl |
1.5 |
*/ |
626 |
dl |
1.1 |
public void testPollInExecutor() { |
627 |
|
|
final PriorityBlockingQueue q = new PriorityBlockingQueue(2); |
628 |
jsr166 |
1.44 |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
629 |
jsr166 |
1.65 |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
630 |
|
|
try (PoolCleaner cleaner = cleaner(executor)) { |
631 |
|
|
executor.execute(new CheckedRunnable() { |
632 |
|
|
public void realRun() throws InterruptedException { |
633 |
|
|
assertNull(q.poll()); |
634 |
|
|
threadsStarted.await(); |
635 |
|
|
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
636 |
|
|
checkEmpty(q); |
637 |
|
|
}}); |
638 |
|
|
|
639 |
|
|
executor.execute(new CheckedRunnable() { |
640 |
|
|
public void realRun() throws InterruptedException { |
641 |
|
|
threadsStarted.await(); |
642 |
|
|
q.put(one); |
643 |
|
|
}}); |
644 |
|
|
} |
645 |
dl |
1.2 |
} |
646 |
|
|
|
647 |
dl |
1.5 |
/** |
648 |
jsr166 |
1.12 |
* A deserialized serialized queue has same elements |
649 |
dl |
1.5 |
*/ |
650 |
jsr166 |
1.15 |
public void testSerialization() throws Exception { |
651 |
jsr166 |
1.46 |
Queue x = populatedQueue(SIZE); |
652 |
|
|
Queue y = serialClone(x); |
653 |
|
|
|
654 |
jsr166 |
1.52 |
assertNotSame(x, y); |
655 |
jsr166 |
1.46 |
assertEquals(x.size(), y.size()); |
656 |
|
|
while (!x.isEmpty()) { |
657 |
|
|
assertFalse(y.isEmpty()); |
658 |
|
|
assertEquals(x.remove(), y.remove()); |
659 |
|
|
} |
660 |
|
|
assertTrue(y.isEmpty()); |
661 |
dl |
1.1 |
} |
662 |
dl |
1.7 |
|
663 |
|
|
/** |
664 |
|
|
* drainTo(c) empties queue into another collection c |
665 |
jsr166 |
1.12 |
*/ |
666 |
dl |
1.7 |
public void testDrainTo() { |
667 |
|
|
PriorityBlockingQueue q = populatedQueue(SIZE); |
668 |
|
|
ArrayList l = new ArrayList(); |
669 |
|
|
q.drainTo(l); |
670 |
jsr166 |
1.48 |
assertEquals(0, q.size()); |
671 |
|
|
assertEquals(SIZE, l.size()); |
672 |
jsr166 |
1.12 |
for (int i = 0; i < SIZE; ++i) |
673 |
dl |
1.7 |
assertEquals(l.get(i), new Integer(i)); |
674 |
dl |
1.11 |
q.add(zero); |
675 |
|
|
q.add(one); |
676 |
|
|
assertFalse(q.isEmpty()); |
677 |
|
|
assertTrue(q.contains(zero)); |
678 |
|
|
assertTrue(q.contains(one)); |
679 |
|
|
l.clear(); |
680 |
|
|
q.drainTo(l); |
681 |
jsr166 |
1.48 |
assertEquals(0, q.size()); |
682 |
|
|
assertEquals(2, l.size()); |
683 |
jsr166 |
1.12 |
for (int i = 0; i < 2; ++i) |
684 |
dl |
1.11 |
assertEquals(l.get(i), new Integer(i)); |
685 |
dl |
1.7 |
} |
686 |
|
|
|
687 |
|
|
/** |
688 |
|
|
* drainTo empties queue |
689 |
jsr166 |
1.12 |
*/ |
690 |
jsr166 |
1.15 |
public void testDrainToWithActivePut() throws InterruptedException { |
691 |
dl |
1.7 |
final PriorityBlockingQueue q = populatedQueue(SIZE); |
692 |
jsr166 |
1.15 |
Thread t = new Thread(new CheckedRunnable() { |
693 |
|
|
public void realRun() { |
694 |
jsr166 |
1.63 |
q.put(new Integer(SIZE + 1)); |
695 |
jsr166 |
1.15 |
}}); |
696 |
|
|
|
697 |
|
|
t.start(); |
698 |
|
|
ArrayList l = new ArrayList(); |
699 |
|
|
q.drainTo(l); |
700 |
|
|
assertTrue(l.size() >= SIZE); |
701 |
|
|
for (int i = 0; i < SIZE; ++i) |
702 |
|
|
assertEquals(l.get(i), new Integer(i)); |
703 |
|
|
t.join(); |
704 |
|
|
assertTrue(q.size() + l.size() >= SIZE); |
705 |
dl |
1.7 |
} |
706 |
|
|
|
707 |
|
|
/** |
708 |
jsr166 |
1.31 |
* drainTo(c, n) empties first min(n, size) elements of queue into c |
709 |
jsr166 |
1.12 |
*/ |
710 |
dl |
1.7 |
public void testDrainToN() { |
711 |
jsr166 |
1.63 |
PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE * 2); |
712 |
dl |
1.7 |
for (int i = 0; i < SIZE + 2; ++i) { |
713 |
jsr166 |
1.13 |
for (int j = 0; j < SIZE; j++) |
714 |
dl |
1.11 |
assertTrue(q.offer(new Integer(j))); |
715 |
dl |
1.7 |
ArrayList l = new ArrayList(); |
716 |
|
|
q.drainTo(l, i); |
717 |
jsr166 |
1.32 |
int k = (i < SIZE) ? i : SIZE; |
718 |
jsr166 |
1.49 |
assertEquals(k, l.size()); |
719 |
jsr166 |
1.63 |
assertEquals(SIZE - k, q.size()); |
720 |
jsr166 |
1.12 |
for (int j = 0; j < k; ++j) |
721 |
dl |
1.11 |
assertEquals(l.get(j), new Integer(j)); |
722 |
jsr166 |
1.55 |
do {} while (q.poll() != null); |
723 |
dl |
1.7 |
} |
724 |
|
|
} |
725 |
|
|
|
726 |
jsr166 |
1.53 |
/** |
727 |
|
|
* remove(null), contains(null) always return false |
728 |
|
|
*/ |
729 |
|
|
public void testNeverContainsNull() { |
730 |
|
|
Collection<?>[] qs = { |
731 |
|
|
new PriorityBlockingQueue<Object>(), |
732 |
|
|
populatedQueue(2), |
733 |
|
|
}; |
734 |
|
|
|
735 |
|
|
for (Collection<?> q : qs) { |
736 |
|
|
assertFalse(q.contains(null)); |
737 |
|
|
assertFalse(q.remove(null)); |
738 |
|
|
} |
739 |
|
|
} |
740 |
|
|
|
741 |
dl |
1.1 |
} |