1 |
dl |
1.1 |
/* |
2 |
dl |
1.7 |
* 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 |
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* http://creativecommons.org/licenses/publicdomain |
5 |
jsr166 |
1.15 |
* 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 |
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import junit.framework.*; |
10 |
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import java.util.*; |
11 |
jsr166 |
1.19 |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
12 |
dl |
1.1 |
import java.util.concurrent.*; |
13 |
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14 |
dl |
1.3 |
public class DelayQueueTest extends JSR166TestCase { |
15 |
dl |
1.1 |
public static void main(String[] args) { |
16 |
jsr166 |
1.18 |
junit.textui.TestRunner.run (suite()); |
17 |
dl |
1.1 |
} |
18 |
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19 |
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public static Test suite() { |
20 |
jsr166 |
1.18 |
return new TestSuite(DelayQueueTest.class); |
21 |
dl |
1.1 |
} |
22 |
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23 |
dl |
1.3 |
private static final int NOCAP = Integer.MAX_VALUE; |
24 |
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25 |
dl |
1.4 |
/** |
26 |
dl |
1.8 |
* A delayed implementation for testing. |
27 |
dl |
1.5 |
* Most tests use Pseudodelays, where delays are all elapsed |
28 |
dl |
1.4 |
* (so, no blocking solely for delays) but are still ordered |
29 |
jsr166 |
1.15 |
*/ |
30 |
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static class PDelay implements Delayed { |
31 |
dl |
1.1 |
int pseudodelay; |
32 |
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PDelay(int i) { pseudodelay = Integer.MIN_VALUE + i; } |
33 |
dl |
1.10 |
public int compareTo(PDelay y) { |
34 |
dl |
1.1 |
int i = pseudodelay; |
35 |
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int j = ((PDelay)y).pseudodelay; |
36 |
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if (i < j) return -1; |
37 |
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if (i > j) return 1; |
38 |
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return 0; |
39 |
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} |
40 |
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41 |
dl |
1.10 |
public int compareTo(Delayed y) { |
42 |
dl |
1.1 |
int i = pseudodelay; |
43 |
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int j = ((PDelay)y).pseudodelay; |
44 |
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if (i < j) return -1; |
45 |
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if (i > j) return 1; |
46 |
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return 0; |
47 |
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} |
48 |
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49 |
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public boolean equals(Object other) { |
50 |
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return ((PDelay)other).pseudodelay == pseudodelay; |
51 |
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} |
52 |
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public boolean equals(PDelay other) { |
53 |
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return ((PDelay)other).pseudodelay == pseudodelay; |
54 |
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} |
55 |
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56 |
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57 |
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public long getDelay(TimeUnit ignore) { |
58 |
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return pseudodelay; |
59 |
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} |
60 |
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public int intValue() { |
61 |
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return pseudodelay; |
62 |
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} |
63 |
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64 |
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public String toString() { |
65 |
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return String.valueOf(pseudodelay); |
66 |
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} |
67 |
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} |
68 |
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69 |
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70 |
dl |
1.4 |
/** |
71 |
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* Delayed implementation that actually delays |
72 |
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*/ |
73 |
jsr166 |
1.15 |
static class NanoDelay implements Delayed { |
74 |
dl |
1.4 |
long trigger; |
75 |
jsr166 |
1.15 |
NanoDelay(long i) { |
76 |
dl |
1.4 |
trigger = System.nanoTime() + i; |
77 |
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} |
78 |
dl |
1.10 |
public int compareTo(NanoDelay y) { |
79 |
dl |
1.4 |
long i = trigger; |
80 |
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long j = ((NanoDelay)y).trigger; |
81 |
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if (i < j) return -1; |
82 |
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if (i > j) return 1; |
83 |
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return 0; |
84 |
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} |
85 |
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86 |
dl |
1.10 |
public int compareTo(Delayed y) { |
87 |
dl |
1.4 |
long i = trigger; |
88 |
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long j = ((NanoDelay)y).trigger; |
89 |
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if (i < j) return -1; |
90 |
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if (i > j) return 1; |
91 |
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return 0; |
92 |
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} |
93 |
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94 |
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public boolean equals(Object other) { |
95 |
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return ((NanoDelay)other).trigger == trigger; |
96 |
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} |
97 |
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public boolean equals(NanoDelay other) { |
98 |
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return ((NanoDelay)other).trigger == trigger; |
99 |
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} |
100 |
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101 |
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public long getDelay(TimeUnit unit) { |
102 |
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long n = trigger - System.nanoTime(); |
103 |
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return unit.convert(n, TimeUnit.NANOSECONDS); |
104 |
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} |
105 |
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106 |
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public long getTriggerTime() { |
107 |
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return trigger; |
108 |
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} |
109 |
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110 |
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public String toString() { |
111 |
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return String.valueOf(trigger); |
112 |
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} |
113 |
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} |
114 |
dl |
1.1 |
|
115 |
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116 |
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/** |
117 |
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* Create a queue of given size containing consecutive |
118 |
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* PDelays 0 ... n. |
119 |
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*/ |
120 |
dl |
1.3 |
private DelayQueue populatedQueue(int n) { |
121 |
dl |
1.1 |
DelayQueue q = new DelayQueue(); |
122 |
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assertTrue(q.isEmpty()); |
123 |
jsr166 |
1.18 |
for (int i = n-1; i >= 0; i-=2) |
124 |
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assertTrue(q.offer(new PDelay(i))); |
125 |
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for (int i = (n & 1); i < n; i+=2) |
126 |
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assertTrue(q.offer(new PDelay(i))); |
127 |
dl |
1.1 |
assertFalse(q.isEmpty()); |
128 |
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assertEquals(NOCAP, q.remainingCapacity()); |
129 |
jsr166 |
1.18 |
assertEquals(n, q.size()); |
130 |
dl |
1.1 |
return q; |
131 |
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} |
132 |
jsr166 |
1.15 |
|
133 |
dl |
1.4 |
/** |
134 |
dl |
1.5 |
* A new queue has unbounded capacity |
135 |
dl |
1.4 |
*/ |
136 |
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public void testConstructor1() { |
137 |
dl |
1.1 |
assertEquals(NOCAP, new DelayQueue().remainingCapacity()); |
138 |
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} |
139 |
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140 |
dl |
1.4 |
/** |
141 |
dl |
1.5 |
* Initializing from null Collection throws NPE |
142 |
dl |
1.4 |
*/ |
143 |
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public void testConstructor3() { |
144 |
dl |
1.1 |
try { |
145 |
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DelayQueue q = new DelayQueue(null); |
146 |
dl |
1.4 |
shouldThrow(); |
147 |
jsr166 |
1.20 |
} catch (NullPointerException success) {} |
148 |
dl |
1.1 |
} |
149 |
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|
150 |
dl |
1.4 |
/** |
151 |
dl |
1.5 |
* Initializing from Collection of null elements throws NPE |
152 |
dl |
1.4 |
*/ |
153 |
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public void testConstructor4() { |
154 |
dl |
1.1 |
try { |
155 |
dl |
1.3 |
PDelay[] ints = new PDelay[SIZE]; |
156 |
dl |
1.1 |
DelayQueue q = new DelayQueue(Arrays.asList(ints)); |
157 |
dl |
1.4 |
shouldThrow(); |
158 |
jsr166 |
1.20 |
} catch (NullPointerException success) {} |
159 |
dl |
1.1 |
} |
160 |
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|
161 |
dl |
1.4 |
/** |
162 |
dl |
1.5 |
* Initializing from Collection with some null elements throws NPE |
163 |
dl |
1.4 |
*/ |
164 |
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public void testConstructor5() { |
165 |
dl |
1.1 |
try { |
166 |
dl |
1.3 |
PDelay[] ints = new PDelay[SIZE]; |
167 |
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for (int i = 0; i < SIZE-1; ++i) |
168 |
dl |
1.1 |
ints[i] = new PDelay(i); |
169 |
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DelayQueue q = new DelayQueue(Arrays.asList(ints)); |
170 |
dl |
1.4 |
shouldThrow(); |
171 |
jsr166 |
1.20 |
} catch (NullPointerException success) {} |
172 |
dl |
1.1 |
} |
173 |
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|
174 |
dl |
1.4 |
/** |
175 |
dl |
1.5 |
* Queue contains all elements of collection used to initialize |
176 |
dl |
1.4 |
*/ |
177 |
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public void testConstructor6() { |
178 |
jsr166 |
1.21 |
PDelay[] ints = new PDelay[SIZE]; |
179 |
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for (int i = 0; i < SIZE; ++i) |
180 |
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ints[i] = new PDelay(i); |
181 |
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DelayQueue q = new DelayQueue(Arrays.asList(ints)); |
182 |
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for (int i = 0; i < SIZE; ++i) |
183 |
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assertEquals(ints[i], q.poll()); |
184 |
dl |
1.1 |
} |
185 |
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186 |
dl |
1.4 |
/** |
187 |
dl |
1.5 |
* isEmpty is true before add, false after |
188 |
dl |
1.4 |
*/ |
189 |
dl |
1.1 |
public void testEmpty() { |
190 |
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DelayQueue q = new DelayQueue(); |
191 |
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assertTrue(q.isEmpty()); |
192 |
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assertEquals(NOCAP, q.remainingCapacity()); |
193 |
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q.add(new PDelay(1)); |
194 |
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assertFalse(q.isEmpty()); |
195 |
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q.add(new PDelay(2)); |
196 |
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q.remove(); |
197 |
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q.remove(); |
198 |
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assertTrue(q.isEmpty()); |
199 |
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} |
200 |
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|
201 |
dl |
1.4 |
/** |
202 |
dl |
1.5 |
* remainingCapacity does not change when elementa added or removed, |
203 |
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* but size does |
204 |
dl |
1.4 |
*/ |
205 |
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public void testRemainingCapacity() { |
206 |
dl |
1.3 |
DelayQueue q = populatedQueue(SIZE); |
207 |
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for (int i = 0; i < SIZE; ++i) { |
208 |
dl |
1.1 |
assertEquals(NOCAP, q.remainingCapacity()); |
209 |
dl |
1.3 |
assertEquals(SIZE-i, q.size()); |
210 |
dl |
1.1 |
q.remove(); |
211 |
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} |
212 |
dl |
1.3 |
for (int i = 0; i < SIZE; ++i) { |
213 |
dl |
1.1 |
assertEquals(NOCAP, q.remainingCapacity()); |
214 |
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assertEquals(i, q.size()); |
215 |
|
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q.add(new PDelay(i)); |
216 |
|
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} |
217 |
|
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} |
218 |
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|
219 |
dl |
1.4 |
/** |
220 |
dl |
1.5 |
* offer(null) throws NPE |
221 |
dl |
1.4 |
*/ |
222 |
|
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public void testOfferNull() { |
223 |
jsr166 |
1.18 |
try { |
224 |
dl |
1.1 |
DelayQueue q = new DelayQueue(); |
225 |
|
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q.offer(null); |
226 |
dl |
1.4 |
shouldThrow(); |
227 |
jsr166 |
1.20 |
} catch (NullPointerException success) {} |
228 |
dl |
1.1 |
} |
229 |
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|
230 |
dl |
1.4 |
/** |
231 |
dl |
1.6 |
* add(null) throws NPE |
232 |
|
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*/ |
233 |
|
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public void testAddNull() { |
234 |
jsr166 |
1.18 |
try { |
235 |
dl |
1.6 |
DelayQueue q = new DelayQueue(); |
236 |
|
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q.add(null); |
237 |
|
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shouldThrow(); |
238 |
jsr166 |
1.20 |
} catch (NullPointerException success) {} |
239 |
dl |
1.6 |
} |
240 |
|
|
|
241 |
|
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/** |
242 |
dl |
1.5 |
* offer non-null succeeds |
243 |
dl |
1.4 |
*/ |
244 |
dl |
1.1 |
public void testOffer() { |
245 |
|
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DelayQueue q = new DelayQueue(); |
246 |
|
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assertTrue(q.offer(new PDelay(0))); |
247 |
|
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assertTrue(q.offer(new PDelay(1))); |
248 |
|
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} |
249 |
|
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|
250 |
dl |
1.4 |
/** |
251 |
dl |
1.5 |
* add succeeds |
252 |
dl |
1.4 |
*/ |
253 |
|
|
public void testAdd() { |
254 |
dl |
1.1 |
DelayQueue q = new DelayQueue(); |
255 |
dl |
1.3 |
for (int i = 0; i < SIZE; ++i) { |
256 |
dl |
1.1 |
assertEquals(i, q.size()); |
257 |
|
|
assertTrue(q.add(new PDelay(i))); |
258 |
|
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} |
259 |
|
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} |
260 |
|
|
|
261 |
dl |
1.4 |
/** |
262 |
dl |
1.5 |
* addAll(null) throws NPE |
263 |
dl |
1.4 |
*/ |
264 |
|
|
public void testAddAll1() { |
265 |
dl |
1.1 |
try { |
266 |
|
|
DelayQueue q = new DelayQueue(); |
267 |
|
|
q.addAll(null); |
268 |
dl |
1.4 |
shouldThrow(); |
269 |
jsr166 |
1.20 |
} catch (NullPointerException success) {} |
270 |
dl |
1.1 |
} |
271 |
dl |
1.6 |
|
272 |
|
|
|
273 |
|
|
/** |
274 |
|
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* addAll(this) throws IAE |
275 |
|
|
*/ |
276 |
|
|
public void testAddAllSelf() { |
277 |
|
|
try { |
278 |
|
|
DelayQueue q = populatedQueue(SIZE); |
279 |
|
|
q.addAll(q); |
280 |
|
|
shouldThrow(); |
281 |
jsr166 |
1.20 |
} catch (IllegalArgumentException success) {} |
282 |
dl |
1.6 |
} |
283 |
|
|
|
284 |
dl |
1.4 |
/** |
285 |
dl |
1.5 |
* addAll of a collection with null elements throws NPE |
286 |
dl |
1.4 |
*/ |
287 |
|
|
public void testAddAll2() { |
288 |
dl |
1.1 |
try { |
289 |
|
|
DelayQueue q = new DelayQueue(); |
290 |
dl |
1.3 |
PDelay[] ints = new PDelay[SIZE]; |
291 |
dl |
1.1 |
q.addAll(Arrays.asList(ints)); |
292 |
dl |
1.4 |
shouldThrow(); |
293 |
jsr166 |
1.20 |
} catch (NullPointerException success) {} |
294 |
dl |
1.1 |
} |
295 |
dl |
1.4 |
/** |
296 |
dl |
1.5 |
* addAll of a collection with any null elements throws NPE after |
297 |
|
|
* possibly adding some elements |
298 |
dl |
1.4 |
*/ |
299 |
|
|
public void testAddAll3() { |
300 |
dl |
1.1 |
try { |
301 |
|
|
DelayQueue q = new DelayQueue(); |
302 |
dl |
1.3 |
PDelay[] ints = new PDelay[SIZE]; |
303 |
|
|
for (int i = 0; i < SIZE-1; ++i) |
304 |
dl |
1.1 |
ints[i] = new PDelay(i); |
305 |
|
|
q.addAll(Arrays.asList(ints)); |
306 |
dl |
1.4 |
shouldThrow(); |
307 |
jsr166 |
1.20 |
} catch (NullPointerException success) {} |
308 |
dl |
1.1 |
} |
309 |
|
|
|
310 |
dl |
1.4 |
/** |
311 |
dl |
1.5 |
* Queue contains all elements of successful addAll |
312 |
dl |
1.4 |
*/ |
313 |
|
|
public void testAddAll5() { |
314 |
jsr166 |
1.21 |
PDelay[] empty = new PDelay[0]; |
315 |
|
|
PDelay[] ints = new PDelay[SIZE]; |
316 |
|
|
for (int i = SIZE-1; i >= 0; --i) |
317 |
|
|
ints[i] = new PDelay(i); |
318 |
|
|
DelayQueue q = new DelayQueue(); |
319 |
|
|
assertFalse(q.addAll(Arrays.asList(empty))); |
320 |
|
|
assertTrue(q.addAll(Arrays.asList(ints))); |
321 |
|
|
for (int i = 0; i < SIZE; ++i) |
322 |
|
|
assertEquals(ints[i], q.poll()); |
323 |
dl |
1.1 |
} |
324 |
|
|
|
325 |
dl |
1.4 |
/** |
326 |
dl |
1.5 |
* put(null) throws NPE |
327 |
dl |
1.4 |
*/ |
328 |
dl |
1.1 |
public void testPutNull() { |
329 |
jsr166 |
1.18 |
try { |
330 |
dl |
1.1 |
DelayQueue q = new DelayQueue(); |
331 |
|
|
q.put(null); |
332 |
dl |
1.4 |
shouldThrow(); |
333 |
jsr166 |
1.20 |
} catch (NullPointerException success) {} |
334 |
dl |
1.1 |
} |
335 |
|
|
|
336 |
dl |
1.4 |
/** |
337 |
dl |
1.5 |
* all elements successfully put are contained |
338 |
dl |
1.4 |
*/ |
339 |
dl |
1.1 |
public void testPut() { |
340 |
jsr166 |
1.20 |
DelayQueue q = new DelayQueue(); |
341 |
|
|
for (int i = 0; i < SIZE; ++i) { |
342 |
|
|
PDelay I = new PDelay(i); |
343 |
|
|
q.put(I); |
344 |
|
|
assertTrue(q.contains(I)); |
345 |
dl |
1.1 |
} |
346 |
jsr166 |
1.20 |
assertEquals(SIZE, q.size()); |
347 |
dl |
1.1 |
} |
348 |
|
|
|
349 |
dl |
1.4 |
/** |
350 |
dl |
1.5 |
* put doesn't block waiting for take |
351 |
dl |
1.4 |
*/ |
352 |
jsr166 |
1.20 |
public void testPutWithTake() throws InterruptedException { |
353 |
dl |
1.1 |
final DelayQueue q = new DelayQueue(); |
354 |
jsr166 |
1.20 |
Thread t = new Thread(new CheckedRunnable() { |
355 |
|
|
public void realRun() { |
356 |
|
|
q.put(new PDelay(0)); |
357 |
|
|
q.put(new PDelay(0)); |
358 |
|
|
q.put(new PDelay(0)); |
359 |
|
|
q.put(new PDelay(0)); |
360 |
|
|
}}); |
361 |
|
|
|
362 |
|
|
t.start(); |
363 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
364 |
|
|
q.take(); |
365 |
|
|
t.interrupt(); |
366 |
|
|
t.join(); |
367 |
dl |
1.1 |
} |
368 |
|
|
|
369 |
dl |
1.4 |
/** |
370 |
dl |
1.5 |
* timed offer does not time out |
371 |
dl |
1.4 |
*/ |
372 |
jsr166 |
1.20 |
public void testTimedOffer() throws InterruptedException { |
373 |
dl |
1.1 |
final DelayQueue q = new DelayQueue(); |
374 |
jsr166 |
1.20 |
Thread t = new Thread(new CheckedRunnable() { |
375 |
|
|
public void realRun() throws InterruptedException { |
376 |
|
|
q.put(new PDelay(0)); |
377 |
|
|
q.put(new PDelay(0)); |
378 |
jsr166 |
1.24 |
assertTrue(q.offer(new PDelay(0), SHORT_DELAY_MS, MILLISECONDS)); |
379 |
|
|
assertTrue(q.offer(new PDelay(0), LONG_DELAY_MS, MILLISECONDS)); |
380 |
jsr166 |
1.20 |
}}); |
381 |
jsr166 |
1.15 |
|
382 |
jsr166 |
1.20 |
t.start(); |
383 |
|
|
Thread.sleep(SMALL_DELAY_MS); |
384 |
|
|
t.interrupt(); |
385 |
|
|
t.join(); |
386 |
dl |
1.1 |
} |
387 |
|
|
|
388 |
dl |
1.4 |
/** |
389 |
dl |
1.5 |
* take retrieves elements in priority order |
390 |
dl |
1.4 |
*/ |
391 |
jsr166 |
1.20 |
public void testTake() throws InterruptedException { |
392 |
|
|
DelayQueue q = populatedQueue(SIZE); |
393 |
|
|
for (int i = 0; i < SIZE; ++i) { |
394 |
|
|
assertEquals(new PDelay(i), ((PDelay)q.take())); |
395 |
jsr166 |
1.18 |
} |
396 |
dl |
1.1 |
} |
397 |
|
|
|
398 |
dl |
1.4 |
/** |
399 |
dl |
1.5 |
* take blocks interruptibly when empty |
400 |
dl |
1.4 |
*/ |
401 |
jsr166 |
1.20 |
public void testTakeFromEmpty() throws InterruptedException { |
402 |
dl |
1.1 |
final DelayQueue q = new DelayQueue(); |
403 |
jsr166 |
1.20 |
Thread t = new ThreadShouldThrow(InterruptedException.class) { |
404 |
|
|
public void realRun() throws InterruptedException { |
405 |
|
|
q.take(); |
406 |
|
|
}}; |
407 |
|
|
|
408 |
|
|
t.start(); |
409 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
410 |
|
|
t.interrupt(); |
411 |
|
|
t.join(); |
412 |
dl |
1.1 |
} |
413 |
|
|
|
414 |
dl |
1.4 |
/** |
415 |
dl |
1.5 |
* Take removes existing elements until empty, then blocks interruptibly |
416 |
dl |
1.4 |
*/ |
417 |
jsr166 |
1.20 |
public void testBlockingTake() throws InterruptedException { |
418 |
|
|
Thread t = new ThreadShouldThrow(InterruptedException.class) { |
419 |
|
|
public void realRun() throws InterruptedException { |
420 |
|
|
DelayQueue q = populatedQueue(SIZE); |
421 |
|
|
for (int i = 0; i < SIZE; ++i) { |
422 |
|
|
threadAssertEquals(new PDelay(i), ((PDelay)q.take())); |
423 |
|
|
} |
424 |
|
|
q.take(); |
425 |
|
|
}}; |
426 |
|
|
|
427 |
dl |
1.1 |
t.start(); |
428 |
jsr166 |
1.20 |
Thread.sleep(SHORT_DELAY_MS); |
429 |
|
|
t.interrupt(); |
430 |
|
|
t.join(); |
431 |
dl |
1.1 |
} |
432 |
|
|
|
433 |
|
|
|
434 |
dl |
1.4 |
/** |
435 |
dl |
1.5 |
* poll succeeds unless empty |
436 |
dl |
1.4 |
*/ |
437 |
|
|
public void testPoll() { |
438 |
dl |
1.3 |
DelayQueue q = populatedQueue(SIZE); |
439 |
|
|
for (int i = 0; i < SIZE; ++i) { |
440 |
dl |
1.1 |
assertEquals(new PDelay(i), ((PDelay)q.poll())); |
441 |
|
|
} |
442 |
jsr166 |
1.18 |
assertNull(q.poll()); |
443 |
dl |
1.1 |
} |
444 |
|
|
|
445 |
dl |
1.4 |
/** |
446 |
dl |
1.5 |
* timed pool with zero timeout succeeds when non-empty, else times out |
447 |
dl |
1.4 |
*/ |
448 |
jsr166 |
1.20 |
public void testTimedPoll0() throws InterruptedException { |
449 |
|
|
DelayQueue q = populatedQueue(SIZE); |
450 |
|
|
for (int i = 0; i < SIZE; ++i) { |
451 |
|
|
assertEquals(new PDelay(i), ((PDelay)q.poll(0, MILLISECONDS))); |
452 |
jsr166 |
1.18 |
} |
453 |
jsr166 |
1.20 |
assertNull(q.poll(0, MILLISECONDS)); |
454 |
dl |
1.1 |
} |
455 |
|
|
|
456 |
dl |
1.4 |
/** |
457 |
dl |
1.5 |
* timed pool with nonzero timeout succeeds when non-empty, else times out |
458 |
dl |
1.4 |
*/ |
459 |
jsr166 |
1.20 |
public void testTimedPoll() throws InterruptedException { |
460 |
|
|
DelayQueue q = populatedQueue(SIZE); |
461 |
|
|
for (int i = 0; i < SIZE; ++i) { |
462 |
|
|
assertEquals(new PDelay(i), ((PDelay)q.poll(SHORT_DELAY_MS, MILLISECONDS))); |
463 |
jsr166 |
1.18 |
} |
464 |
jsr166 |
1.20 |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
465 |
dl |
1.1 |
} |
466 |
|
|
|
467 |
dl |
1.4 |
/** |
468 |
dl |
1.5 |
* Interrupted timed poll throws InterruptedException instead of |
469 |
|
|
* returning timeout status |
470 |
dl |
1.4 |
*/ |
471 |
jsr166 |
1.20 |
public void testInterruptedTimedPoll() throws InterruptedException { |
472 |
|
|
Thread t = new Thread(new CheckedRunnable() { |
473 |
|
|
public void realRun() throws InterruptedException { |
474 |
|
|
DelayQueue q = populatedQueue(SIZE); |
475 |
|
|
for (int i = 0; i < SIZE; ++i) { |
476 |
|
|
assertEquals(new PDelay(i), ((PDelay)q.poll(SHORT_DELAY_MS, MILLISECONDS))); |
477 |
|
|
} |
478 |
|
|
try { |
479 |
jsr166 |
1.22 |
q.poll(SMALL_DELAY_MS, MILLISECONDS); |
480 |
jsr166 |
1.20 |
shouldThrow(); |
481 |
|
|
} catch (InterruptedException success) {} |
482 |
|
|
}}); |
483 |
|
|
|
484 |
dl |
1.1 |
t.start(); |
485 |
jsr166 |
1.20 |
Thread.sleep(SHORT_DELAY_MS); |
486 |
|
|
t.interrupt(); |
487 |
|
|
t.join(); |
488 |
dl |
1.1 |
} |
489 |
|
|
|
490 |
dl |
1.4 |
/** |
491 |
dl |
1.5 |
* timed poll before a delayed offer fails; after offer succeeds; |
492 |
|
|
* on interruption throws |
493 |
dl |
1.4 |
*/ |
494 |
jsr166 |
1.20 |
public void testTimedPollWithOffer() throws InterruptedException { |
495 |
dl |
1.1 |
final DelayQueue q = new DelayQueue(); |
496 |
jsr166 |
1.23 |
final PDelay pdelay = new PDelay(0); |
497 |
jsr166 |
1.20 |
Thread t = new Thread(new CheckedRunnable() { |
498 |
|
|
public void realRun() throws InterruptedException { |
499 |
|
|
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
500 |
jsr166 |
1.23 |
assertSame(pdelay, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
501 |
jsr166 |
1.20 |
try { |
502 |
|
|
q.poll(LONG_DELAY_MS, MILLISECONDS); |
503 |
|
|
shouldThrow(); |
504 |
|
|
} catch (InterruptedException success) {} |
505 |
|
|
}}); |
506 |
|
|
|
507 |
|
|
t.start(); |
508 |
|
|
Thread.sleep(SMALL_DELAY_MS); |
509 |
jsr166 |
1.23 |
assertTrue(q.offer(pdelay, SHORT_DELAY_MS, MILLISECONDS)); |
510 |
jsr166 |
1.20 |
t.interrupt(); |
511 |
|
|
t.join(); |
512 |
jsr166 |
1.15 |
} |
513 |
dl |
1.1 |
|
514 |
|
|
|
515 |
dl |
1.4 |
/** |
516 |
dl |
1.5 |
* peek returns next element, or null if empty |
517 |
dl |
1.4 |
*/ |
518 |
|
|
public void testPeek() { |
519 |
dl |
1.3 |
DelayQueue q = populatedQueue(SIZE); |
520 |
|
|
for (int i = 0; i < SIZE; ++i) { |
521 |
dl |
1.1 |
assertEquals(new PDelay(i), ((PDelay)q.peek())); |
522 |
|
|
q.poll(); |
523 |
dl |
1.12 |
if (q.isEmpty()) |
524 |
|
|
assertNull(q.peek()); |
525 |
|
|
else |
526 |
|
|
assertTrue(i != ((PDelay)q.peek()).intValue()); |
527 |
dl |
1.1 |
} |
528 |
jsr166 |
1.18 |
assertNull(q.peek()); |
529 |
dl |
1.1 |
} |
530 |
|
|
|
531 |
dl |
1.4 |
/** |
532 |
dl |
1.5 |
* element returns next element, or throws NSEE if empty |
533 |
dl |
1.4 |
*/ |
534 |
|
|
public void testElement() { |
535 |
dl |
1.3 |
DelayQueue q = populatedQueue(SIZE); |
536 |
|
|
for (int i = 0; i < SIZE; ++i) { |
537 |
dl |
1.1 |
assertEquals(new PDelay(i), ((PDelay)q.element())); |
538 |
|
|
q.poll(); |
539 |
|
|
} |
540 |
|
|
try { |
541 |
|
|
q.element(); |
542 |
dl |
1.4 |
shouldThrow(); |
543 |
jsr166 |
1.20 |
} catch (NoSuchElementException success) {} |
544 |
dl |
1.1 |
} |
545 |
|
|
|
546 |
dl |
1.4 |
/** |
547 |
dl |
1.5 |
* remove removes next element, or throws NSEE if empty |
548 |
dl |
1.4 |
*/ |
549 |
|
|
public void testRemove() { |
550 |
dl |
1.3 |
DelayQueue q = populatedQueue(SIZE); |
551 |
|
|
for (int i = 0; i < SIZE; ++i) { |
552 |
dl |
1.1 |
assertEquals(new PDelay(i), ((PDelay)q.remove())); |
553 |
|
|
} |
554 |
|
|
try { |
555 |
|
|
q.remove(); |
556 |
dl |
1.4 |
shouldThrow(); |
557 |
jsr166 |
1.20 |
} catch (NoSuchElementException success) {} |
558 |
dl |
1.1 |
} |
559 |
|
|
|
560 |
dl |
1.4 |
/** |
561 |
dl |
1.5 |
* remove(x) removes x and returns true if present |
562 |
dl |
1.4 |
*/ |
563 |
|
|
public void testRemoveElement() { |
564 |
dl |
1.3 |
DelayQueue q = populatedQueue(SIZE); |
565 |
|
|
for (int i = 1; i < SIZE; i+=2) { |
566 |
dl |
1.1 |
assertTrue(q.remove(new PDelay(i))); |
567 |
|
|
} |
568 |
dl |
1.3 |
for (int i = 0; i < SIZE; i+=2) { |
569 |
dl |
1.1 |
assertTrue(q.remove(new PDelay(i))); |
570 |
|
|
assertFalse(q.remove(new PDelay(i+1))); |
571 |
|
|
} |
572 |
dl |
1.2 |
assertTrue(q.isEmpty()); |
573 |
dl |
1.1 |
} |
574 |
jsr166 |
1.15 |
|
575 |
dl |
1.4 |
/** |
576 |
dl |
1.5 |
* contains(x) reports true when elements added but not yet removed |
577 |
dl |
1.4 |
*/ |
578 |
|
|
public void testContains() { |
579 |
dl |
1.3 |
DelayQueue q = populatedQueue(SIZE); |
580 |
|
|
for (int i = 0; i < SIZE; ++i) { |
581 |
dl |
1.1 |
assertTrue(q.contains(new PDelay(i))); |
582 |
|
|
q.poll(); |
583 |
|
|
assertFalse(q.contains(new PDelay(i))); |
584 |
|
|
} |
585 |
|
|
} |
586 |
|
|
|
587 |
dl |
1.4 |
/** |
588 |
dl |
1.5 |
* clear removes all elements |
589 |
dl |
1.4 |
*/ |
590 |
|
|
public void testClear() { |
591 |
dl |
1.3 |
DelayQueue q = populatedQueue(SIZE); |
592 |
dl |
1.1 |
q.clear(); |
593 |
|
|
assertTrue(q.isEmpty()); |
594 |
|
|
assertEquals(0, q.size()); |
595 |
|
|
assertEquals(NOCAP, q.remainingCapacity()); |
596 |
dl |
1.11 |
PDelay x = new PDelay(1); |
597 |
|
|
q.add(x); |
598 |
dl |
1.1 |
assertFalse(q.isEmpty()); |
599 |
dl |
1.11 |
assertTrue(q.contains(x)); |
600 |
dl |
1.1 |
q.clear(); |
601 |
|
|
assertTrue(q.isEmpty()); |
602 |
|
|
} |
603 |
|
|
|
604 |
dl |
1.4 |
/** |
605 |
dl |
1.5 |
* containsAll(c) is true when c contains a subset of elements |
606 |
dl |
1.4 |
*/ |
607 |
|
|
public void testContainsAll() { |
608 |
dl |
1.3 |
DelayQueue q = populatedQueue(SIZE); |
609 |
dl |
1.1 |
DelayQueue p = new DelayQueue(); |
610 |
dl |
1.3 |
for (int i = 0; i < SIZE; ++i) { |
611 |
dl |
1.1 |
assertTrue(q.containsAll(p)); |
612 |
|
|
assertFalse(p.containsAll(q)); |
613 |
|
|
p.add(new PDelay(i)); |
614 |
|
|
} |
615 |
|
|
assertTrue(p.containsAll(q)); |
616 |
|
|
} |
617 |
|
|
|
618 |
dl |
1.4 |
/** |
619 |
dl |
1.5 |
* retainAll(c) retains only those elements of c and reports true if changed |
620 |
dl |
1.4 |
*/ |
621 |
|
|
public void testRetainAll() { |
622 |
dl |
1.3 |
DelayQueue q = populatedQueue(SIZE); |
623 |
|
|
DelayQueue p = populatedQueue(SIZE); |
624 |
|
|
for (int i = 0; i < SIZE; ++i) { |
625 |
dl |
1.1 |
boolean changed = q.retainAll(p); |
626 |
|
|
if (i == 0) |
627 |
|
|
assertFalse(changed); |
628 |
|
|
else |
629 |
|
|
assertTrue(changed); |
630 |
|
|
|
631 |
|
|
assertTrue(q.containsAll(p)); |
632 |
dl |
1.3 |
assertEquals(SIZE-i, q.size()); |
633 |
dl |
1.1 |
p.remove(); |
634 |
|
|
} |
635 |
|
|
} |
636 |
|
|
|
637 |
dl |
1.4 |
/** |
638 |
dl |
1.5 |
* removeAll(c) removes only those elements of c and reports true if changed |
639 |
dl |
1.4 |
*/ |
640 |
|
|
public void testRemoveAll() { |
641 |
dl |
1.3 |
for (int i = 1; i < SIZE; ++i) { |
642 |
|
|
DelayQueue q = populatedQueue(SIZE); |
643 |
|
|
DelayQueue p = populatedQueue(i); |
644 |
dl |
1.1 |
assertTrue(q.removeAll(p)); |
645 |
dl |
1.3 |
assertEquals(SIZE-i, q.size()); |
646 |
dl |
1.1 |
for (int j = 0; j < i; ++j) { |
647 |
|
|
PDelay I = (PDelay)(p.remove()); |
648 |
|
|
assertFalse(q.contains(I)); |
649 |
|
|
} |
650 |
|
|
} |
651 |
|
|
} |
652 |
|
|
|
653 |
dl |
1.4 |
/** |
654 |
dl |
1.5 |
* toArray contains all elements |
655 |
dl |
1.4 |
*/ |
656 |
jsr166 |
1.20 |
public void testToArray() throws InterruptedException { |
657 |
dl |
1.3 |
DelayQueue q = populatedQueue(SIZE); |
658 |
jsr166 |
1.18 |
Object[] o = q.toArray(); |
659 |
dl |
1.1 |
Arrays.sort(o); |
660 |
jsr166 |
1.18 |
for (int i = 0; i < o.length; i++) |
661 |
|
|
assertEquals(o[i], q.take()); |
662 |
dl |
1.1 |
} |
663 |
|
|
|
664 |
dl |
1.4 |
/** |
665 |
dl |
1.5 |
* toArray(a) contains all elements |
666 |
dl |
1.4 |
*/ |
667 |
jsr166 |
1.20 |
public void testToArray2() throws InterruptedException { |
668 |
dl |
1.3 |
DelayQueue q = populatedQueue(SIZE); |
669 |
jsr166 |
1.18 |
PDelay[] ints = new PDelay[SIZE]; |
670 |
|
|
ints = (PDelay[])q.toArray(ints); |
671 |
dl |
1.1 |
Arrays.sort(ints); |
672 |
jsr166 |
1.20 |
for (int i = 0; i < ints.length; i++) |
673 |
|
|
assertEquals(ints[i], q.take()); |
674 |
dl |
1.1 |
} |
675 |
dl |
1.6 |
|
676 |
|
|
|
677 |
|
|
/** |
678 |
|
|
* toArray(null) throws NPE |
679 |
|
|
*/ |
680 |
|
|
public void testToArray_BadArg() { |
681 |
jsr166 |
1.18 |
try { |
682 |
dl |
1.6 |
DelayQueue q = populatedQueue(SIZE); |
683 |
jsr166 |
1.18 |
Object o[] = q.toArray(null); |
684 |
|
|
shouldThrow(); |
685 |
|
|
} catch (NullPointerException success) {} |
686 |
dl |
1.6 |
} |
687 |
|
|
|
688 |
|
|
/** |
689 |
dl |
1.8 |
* toArray with incompatible array type throws CCE |
690 |
dl |
1.6 |
*/ |
691 |
|
|
public void testToArray1_BadArg() { |
692 |
jsr166 |
1.18 |
try { |
693 |
dl |
1.6 |
DelayQueue q = populatedQueue(SIZE); |
694 |
jsr166 |
1.18 |
Object o[] = q.toArray(new String[10] ); |
695 |
|
|
shouldThrow(); |
696 |
jsr166 |
1.20 |
} catch (ArrayStoreException success) {} |
697 |
dl |
1.6 |
} |
698 |
jsr166 |
1.15 |
|
699 |
dl |
1.4 |
/** |
700 |
dl |
1.5 |
* iterator iterates through all elements |
701 |
dl |
1.4 |
*/ |
702 |
|
|
public void testIterator() { |
703 |
dl |
1.3 |
DelayQueue q = populatedQueue(SIZE); |
704 |
dl |
1.1 |
int i = 0; |
705 |
jsr166 |
1.18 |
Iterator it = q.iterator(); |
706 |
jsr166 |
1.16 |
while (it.hasNext()) { |
707 |
dl |
1.1 |
assertTrue(q.contains(it.next())); |
708 |
|
|
++i; |
709 |
|
|
} |
710 |
dl |
1.3 |
assertEquals(i, SIZE); |
711 |
dl |
1.1 |
} |
712 |
|
|
|
713 |
dl |
1.4 |
/** |
714 |
dl |
1.5 |
* iterator.remove removes current element |
715 |
dl |
1.4 |
*/ |
716 |
dl |
1.1 |
public void testIteratorRemove () { |
717 |
|
|
final DelayQueue q = new DelayQueue(); |
718 |
|
|
q.add(new PDelay(2)); |
719 |
|
|
q.add(new PDelay(1)); |
720 |
|
|
q.add(new PDelay(3)); |
721 |
|
|
Iterator it = q.iterator(); |
722 |
|
|
it.next(); |
723 |
|
|
it.remove(); |
724 |
|
|
it = q.iterator(); |
725 |
|
|
assertEquals(it.next(), new PDelay(2)); |
726 |
|
|
assertEquals(it.next(), new PDelay(3)); |
727 |
|
|
assertFalse(it.hasNext()); |
728 |
|
|
} |
729 |
|
|
|
730 |
|
|
|
731 |
dl |
1.4 |
/** |
732 |
dl |
1.5 |
* toString contains toStrings of elements |
733 |
dl |
1.4 |
*/ |
734 |
|
|
public void testToString() { |
735 |
dl |
1.3 |
DelayQueue q = populatedQueue(SIZE); |
736 |
dl |
1.1 |
String s = q.toString(); |
737 |
dl |
1.3 |
for (int i = 0; i < SIZE; ++i) { |
738 |
|
|
assertTrue(s.indexOf(String.valueOf(Integer.MIN_VALUE+i)) >= 0); |
739 |
dl |
1.1 |
} |
740 |
jsr166 |
1.15 |
} |
741 |
dl |
1.1 |
|
742 |
dl |
1.4 |
/** |
743 |
dl |
1.5 |
* offer transfers elements across Executor tasks |
744 |
dl |
1.4 |
*/ |
745 |
dl |
1.1 |
public void testPollInExecutor() { |
746 |
|
|
final DelayQueue q = new DelayQueue(); |
747 |
|
|
ExecutorService executor = Executors.newFixedThreadPool(2); |
748 |
jsr166 |
1.20 |
executor.execute(new CheckedRunnable() { |
749 |
|
|
public void realRun() throws InterruptedException { |
750 |
dl |
1.3 |
threadAssertNull(q.poll()); |
751 |
jsr166 |
1.20 |
threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, MILLISECONDS)); |
752 |
|
|
threadAssertTrue(q.isEmpty()); |
753 |
|
|
}}); |
754 |
|
|
|
755 |
|
|
executor.execute(new CheckedRunnable() { |
756 |
|
|
public void realRun() throws InterruptedException { |
757 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
758 |
|
|
q.put(new PDelay(1)); |
759 |
|
|
}}); |
760 |
dl |
1.1 |
|
761 |
dl |
1.3 |
joinPool(executor); |
762 |
dl |
1.1 |
|
763 |
|
|
} |
764 |
|
|
|
765 |
|
|
|
766 |
dl |
1.4 |
/** |
767 |
dl |
1.8 |
* Delayed actions do not occur until their delay elapses |
768 |
dl |
1.4 |
*/ |
769 |
jsr166 |
1.20 |
public void testDelay() throws InterruptedException { |
770 |
dl |
1.1 |
DelayQueue q = new DelayQueue(); |
771 |
dl |
1.3 |
NanoDelay[] elements = new NanoDelay[SIZE]; |
772 |
|
|
for (int i = 0; i < SIZE; ++i) { |
773 |
|
|
elements[i] = new NanoDelay(1000000000L + 1000000L * (SIZE - i)); |
774 |
dl |
1.1 |
} |
775 |
dl |
1.3 |
for (int i = 0; i < SIZE; ++i) { |
776 |
dl |
1.1 |
q.add(elements[i]); |
777 |
|
|
} |
778 |
|
|
|
779 |
jsr166 |
1.20 |
long last = 0; |
780 |
|
|
for (int i = 0; i < SIZE; ++i) { |
781 |
|
|
NanoDelay e = (NanoDelay)(q.take()); |
782 |
|
|
long tt = e.getTriggerTime(); |
783 |
|
|
assertTrue(tt <= System.nanoTime()); |
784 |
|
|
if (i != 0) |
785 |
|
|
assertTrue(tt >= last); |
786 |
|
|
last = tt; |
787 |
dl |
1.1 |
} |
788 |
|
|
} |
789 |
dl |
1.6 |
|
790 |
dl |
1.12 |
/** |
791 |
|
|
* peek of a non-empty queue returns non-null even if not expired |
792 |
|
|
*/ |
793 |
|
|
public void testPeekDelayed() { |
794 |
|
|
DelayQueue q = new DelayQueue(); |
795 |
|
|
q.add(new NanoDelay(Long.MAX_VALUE)); |
796 |
|
|
assert(q.peek() != null); |
797 |
|
|
} |
798 |
|
|
|
799 |
dl |
1.13 |
|
800 |
dl |
1.12 |
/** |
801 |
|
|
* poll of a non-empty queue returns null if no expired elements. |
802 |
|
|
*/ |
803 |
|
|
public void testPollDelayed() { |
804 |
|
|
DelayQueue q = new DelayQueue(); |
805 |
|
|
q.add(new NanoDelay(Long.MAX_VALUE)); |
806 |
|
|
assertNull(q.poll()); |
807 |
|
|
} |
808 |
dl |
1.6 |
|
809 |
|
|
/** |
810 |
dl |
1.13 |
* timed poll of a non-empty queue returns null if no expired elements. |
811 |
|
|
*/ |
812 |
jsr166 |
1.20 |
public void testTimedPollDelayed() throws InterruptedException { |
813 |
dl |
1.13 |
DelayQueue q = new DelayQueue(); |
814 |
dl |
1.14 |
q.add(new NanoDelay(LONG_DELAY_MS * 1000000L)); |
815 |
jsr166 |
1.20 |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
816 |
dl |
1.13 |
} |
817 |
|
|
|
818 |
|
|
/** |
819 |
dl |
1.6 |
* drainTo(null) throws NPE |
820 |
jsr166 |
1.15 |
*/ |
821 |
dl |
1.6 |
public void testDrainToNull() { |
822 |
|
|
DelayQueue q = populatedQueue(SIZE); |
823 |
|
|
try { |
824 |
|
|
q.drainTo(null); |
825 |
|
|
shouldThrow(); |
826 |
jsr166 |
1.20 |
} catch (NullPointerException success) {} |
827 |
dl |
1.6 |
} |
828 |
|
|
|
829 |
|
|
/** |
830 |
|
|
* drainTo(this) throws IAE |
831 |
jsr166 |
1.15 |
*/ |
832 |
dl |
1.6 |
public void testDrainToSelf() { |
833 |
|
|
DelayQueue q = populatedQueue(SIZE); |
834 |
|
|
try { |
835 |
|
|
q.drainTo(q); |
836 |
|
|
shouldThrow(); |
837 |
jsr166 |
1.20 |
} catch (IllegalArgumentException success) {} |
838 |
dl |
1.6 |
} |
839 |
|
|
|
840 |
|
|
/** |
841 |
|
|
* drainTo(c) empties queue into another collection c |
842 |
jsr166 |
1.15 |
*/ |
843 |
dl |
1.6 |
public void testDrainTo() { |
844 |
dl |
1.11 |
DelayQueue q = new DelayQueue(); |
845 |
|
|
PDelay[] elems = new PDelay[SIZE]; |
846 |
|
|
for (int i = 0; i < SIZE; ++i) { |
847 |
|
|
elems[i] = new PDelay(i); |
848 |
|
|
q.add(elems[i]); |
849 |
|
|
} |
850 |
dl |
1.6 |
ArrayList l = new ArrayList(); |
851 |
|
|
q.drainTo(l); |
852 |
|
|
assertEquals(q.size(), 0); |
853 |
jsr166 |
1.15 |
for (int i = 0; i < SIZE; ++i) |
854 |
dl |
1.11 |
assertEquals(l.get(i), elems[i]); |
855 |
|
|
q.add(elems[0]); |
856 |
|
|
q.add(elems[1]); |
857 |
|
|
assertFalse(q.isEmpty()); |
858 |
|
|
assertTrue(q.contains(elems[0])); |
859 |
|
|
assertTrue(q.contains(elems[1])); |
860 |
|
|
l.clear(); |
861 |
|
|
q.drainTo(l); |
862 |
|
|
assertEquals(q.size(), 0); |
863 |
|
|
assertEquals(l.size(), 2); |
864 |
jsr166 |
1.15 |
for (int i = 0; i < 2; ++i) |
865 |
dl |
1.11 |
assertEquals(l.get(i), elems[i]); |
866 |
dl |
1.6 |
} |
867 |
|
|
|
868 |
|
|
/** |
869 |
|
|
* drainTo empties queue |
870 |
jsr166 |
1.15 |
*/ |
871 |
jsr166 |
1.20 |
public void testDrainToWithActivePut() throws InterruptedException { |
872 |
dl |
1.6 |
final DelayQueue q = populatedQueue(SIZE); |
873 |
jsr166 |
1.20 |
Thread t = new Thread(new CheckedRunnable() { |
874 |
|
|
public void realRun() { |
875 |
|
|
q.put(new PDelay(SIZE+1)); |
876 |
|
|
}}); |
877 |
|
|
|
878 |
|
|
t.start(); |
879 |
|
|
ArrayList l = new ArrayList(); |
880 |
|
|
q.drainTo(l); |
881 |
|
|
assertTrue(l.size() >= SIZE); |
882 |
|
|
t.join(); |
883 |
|
|
assertTrue(q.size() + l.size() >= SIZE); |
884 |
dl |
1.6 |
} |
885 |
|
|
|
886 |
|
|
/** |
887 |
|
|
* drainTo(null, n) throws NPE |
888 |
jsr166 |
1.15 |
*/ |
889 |
dl |
1.6 |
public void testDrainToNullN() { |
890 |
|
|
DelayQueue q = populatedQueue(SIZE); |
891 |
|
|
try { |
892 |
|
|
q.drainTo(null, 0); |
893 |
|
|
shouldThrow(); |
894 |
jsr166 |
1.20 |
} catch (NullPointerException success) {} |
895 |
dl |
1.6 |
} |
896 |
|
|
|
897 |
|
|
/** |
898 |
|
|
* drainTo(this, n) throws IAE |
899 |
jsr166 |
1.15 |
*/ |
900 |
dl |
1.6 |
public void testDrainToSelfN() { |
901 |
|
|
DelayQueue q = populatedQueue(SIZE); |
902 |
|
|
try { |
903 |
|
|
q.drainTo(q, 0); |
904 |
|
|
shouldThrow(); |
905 |
jsr166 |
1.20 |
} catch (IllegalArgumentException success) {} |
906 |
dl |
1.6 |
} |
907 |
|
|
|
908 |
|
|
/** |
909 |
|
|
* drainTo(c, n) empties first max {n, size} elements of queue into c |
910 |
jsr166 |
1.15 |
*/ |
911 |
dl |
1.6 |
public void testDrainToN() { |
912 |
|
|
for (int i = 0; i < SIZE + 2; ++i) { |
913 |
|
|
DelayQueue q = populatedQueue(SIZE); |
914 |
|
|
ArrayList l = new ArrayList(); |
915 |
|
|
q.drainTo(l, i); |
916 |
|
|
int k = (i < SIZE)? i : SIZE; |
917 |
|
|
assertEquals(q.size(), SIZE-k); |
918 |
|
|
assertEquals(l.size(), k); |
919 |
|
|
} |
920 |
|
|
} |
921 |
|
|
|
922 |
dl |
1.1 |
|
923 |
|
|
} |