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 |
1.31 |
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 |
jsr166 |
1.28 |
* 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 |
jsr166 |
1.28 |
int j = y.pseudodelay; |
36 |
dl |
1.1 |
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 |
jsr166 |
1.28 |
return compareTo((PDelay)y); |
43 |
dl |
1.1 |
} |
44 |
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45 |
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public boolean equals(Object other) { |
46 |
jsr166 |
1.28 |
return equals((PDelay)other); |
47 |
dl |
1.1 |
} |
48 |
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public boolean equals(PDelay other) { |
49 |
jsr166 |
1.28 |
return other.pseudodelay == pseudodelay; |
50 |
dl |
1.1 |
} |
51 |
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52 |
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53 |
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public long getDelay(TimeUnit ignore) { |
54 |
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return pseudodelay; |
55 |
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} |
56 |
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public int intValue() { |
57 |
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return pseudodelay; |
58 |
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} |
59 |
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60 |
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public String toString() { |
61 |
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return String.valueOf(pseudodelay); |
62 |
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} |
63 |
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} |
64 |
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65 |
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66 |
dl |
1.4 |
/** |
67 |
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* Delayed implementation that actually delays |
68 |
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*/ |
69 |
jsr166 |
1.15 |
static class NanoDelay implements Delayed { |
70 |
dl |
1.4 |
long trigger; |
71 |
jsr166 |
1.15 |
NanoDelay(long i) { |
72 |
dl |
1.4 |
trigger = System.nanoTime() + i; |
73 |
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} |
74 |
dl |
1.10 |
public int compareTo(NanoDelay y) { |
75 |
dl |
1.4 |
long i = trigger; |
76 |
jsr166 |
1.28 |
long j = y.trigger; |
77 |
dl |
1.4 |
if (i < j) return -1; |
78 |
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if (i > j) return 1; |
79 |
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return 0; |
80 |
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} |
81 |
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82 |
dl |
1.10 |
public int compareTo(Delayed y) { |
83 |
jsr166 |
1.28 |
return compareTo((NanoDelay)y); |
84 |
dl |
1.4 |
} |
85 |
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86 |
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public boolean equals(Object other) { |
87 |
jsr166 |
1.28 |
return equals((NanoDelay)other); |
88 |
dl |
1.4 |
} |
89 |
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public boolean equals(NanoDelay other) { |
90 |
jsr166 |
1.28 |
return other.trigger == trigger; |
91 |
dl |
1.4 |
} |
92 |
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93 |
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public long getDelay(TimeUnit unit) { |
94 |
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long n = trigger - System.nanoTime(); |
95 |
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return unit.convert(n, TimeUnit.NANOSECONDS); |
96 |
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} |
97 |
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98 |
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public long getTriggerTime() { |
99 |
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return trigger; |
100 |
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} |
101 |
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102 |
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public String toString() { |
103 |
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return String.valueOf(trigger); |
104 |
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} |
105 |
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} |
106 |
dl |
1.1 |
|
107 |
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108 |
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/** |
109 |
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* Create a queue of given size containing consecutive |
110 |
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* PDelays 0 ... n. |
111 |
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*/ |
112 |
dl |
1.3 |
private DelayQueue populatedQueue(int n) { |
113 |
dl |
1.1 |
DelayQueue q = new DelayQueue(); |
114 |
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assertTrue(q.isEmpty()); |
115 |
jsr166 |
1.18 |
for (int i = n-1; i >= 0; i-=2) |
116 |
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assertTrue(q.offer(new PDelay(i))); |
117 |
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for (int i = (n & 1); i < n; i+=2) |
118 |
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assertTrue(q.offer(new PDelay(i))); |
119 |
dl |
1.1 |
assertFalse(q.isEmpty()); |
120 |
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assertEquals(NOCAP, q.remainingCapacity()); |
121 |
jsr166 |
1.18 |
assertEquals(n, q.size()); |
122 |
dl |
1.1 |
return q; |
123 |
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} |
124 |
jsr166 |
1.15 |
|
125 |
dl |
1.4 |
/** |
126 |
dl |
1.5 |
* A new queue has unbounded capacity |
127 |
dl |
1.4 |
*/ |
128 |
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public void testConstructor1() { |
129 |
dl |
1.1 |
assertEquals(NOCAP, new DelayQueue().remainingCapacity()); |
130 |
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} |
131 |
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132 |
dl |
1.4 |
/** |
133 |
dl |
1.5 |
* Initializing from null Collection throws NPE |
134 |
dl |
1.4 |
*/ |
135 |
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public void testConstructor3() { |
136 |
dl |
1.1 |
try { |
137 |
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DelayQueue q = new DelayQueue(null); |
138 |
dl |
1.4 |
shouldThrow(); |
139 |
jsr166 |
1.20 |
} catch (NullPointerException success) {} |
140 |
dl |
1.1 |
} |
141 |
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|
142 |
dl |
1.4 |
/** |
143 |
dl |
1.5 |
* Initializing from Collection of null elements throws NPE |
144 |
dl |
1.4 |
*/ |
145 |
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public void testConstructor4() { |
146 |
dl |
1.1 |
try { |
147 |
dl |
1.3 |
PDelay[] ints = new PDelay[SIZE]; |
148 |
dl |
1.1 |
DelayQueue q = new DelayQueue(Arrays.asList(ints)); |
149 |
dl |
1.4 |
shouldThrow(); |
150 |
jsr166 |
1.20 |
} catch (NullPointerException success) {} |
151 |
dl |
1.1 |
} |
152 |
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|
153 |
dl |
1.4 |
/** |
154 |
dl |
1.5 |
* Initializing from Collection with some null elements throws NPE |
155 |
dl |
1.4 |
*/ |
156 |
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public void testConstructor5() { |
157 |
dl |
1.1 |
try { |
158 |
dl |
1.3 |
PDelay[] ints = new PDelay[SIZE]; |
159 |
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for (int i = 0; i < SIZE-1; ++i) |
160 |
dl |
1.1 |
ints[i] = new PDelay(i); |
161 |
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DelayQueue q = new DelayQueue(Arrays.asList(ints)); |
162 |
dl |
1.4 |
shouldThrow(); |
163 |
jsr166 |
1.20 |
} catch (NullPointerException success) {} |
164 |
dl |
1.1 |
} |
165 |
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|
166 |
dl |
1.4 |
/** |
167 |
dl |
1.5 |
* Queue contains all elements of collection used to initialize |
168 |
dl |
1.4 |
*/ |
169 |
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public void testConstructor6() { |
170 |
jsr166 |
1.21 |
PDelay[] ints = new PDelay[SIZE]; |
171 |
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for (int i = 0; i < SIZE; ++i) |
172 |
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ints[i] = new PDelay(i); |
173 |
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DelayQueue q = new DelayQueue(Arrays.asList(ints)); |
174 |
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for (int i = 0; i < SIZE; ++i) |
175 |
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assertEquals(ints[i], q.poll()); |
176 |
dl |
1.1 |
} |
177 |
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178 |
dl |
1.4 |
/** |
179 |
dl |
1.5 |
* isEmpty is true before add, false after |
180 |
dl |
1.4 |
*/ |
181 |
dl |
1.1 |
public void testEmpty() { |
182 |
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DelayQueue q = new DelayQueue(); |
183 |
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assertTrue(q.isEmpty()); |
184 |
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assertEquals(NOCAP, q.remainingCapacity()); |
185 |
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q.add(new PDelay(1)); |
186 |
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assertFalse(q.isEmpty()); |
187 |
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q.add(new PDelay(2)); |
188 |
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q.remove(); |
189 |
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q.remove(); |
190 |
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assertTrue(q.isEmpty()); |
191 |
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} |
192 |
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|
193 |
dl |
1.4 |
/** |
194 |
jsr166 |
1.30 |
* remainingCapacity does not change when elements added or removed, |
195 |
dl |
1.5 |
* but size does |
196 |
dl |
1.4 |
*/ |
197 |
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public void testRemainingCapacity() { |
198 |
dl |
1.3 |
DelayQueue q = populatedQueue(SIZE); |
199 |
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for (int i = 0; i < SIZE; ++i) { |
200 |
dl |
1.1 |
assertEquals(NOCAP, q.remainingCapacity()); |
201 |
dl |
1.3 |
assertEquals(SIZE-i, q.size()); |
202 |
dl |
1.1 |
q.remove(); |
203 |
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} |
204 |
dl |
1.3 |
for (int i = 0; i < SIZE; ++i) { |
205 |
dl |
1.1 |
assertEquals(NOCAP, q.remainingCapacity()); |
206 |
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assertEquals(i, q.size()); |
207 |
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q.add(new PDelay(i)); |
208 |
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} |
209 |
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} |
210 |
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|
211 |
dl |
1.4 |
/** |
212 |
dl |
1.5 |
* offer(null) throws NPE |
213 |
dl |
1.4 |
*/ |
214 |
|
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public void testOfferNull() { |
215 |
jsr166 |
1.18 |
try { |
216 |
dl |
1.1 |
DelayQueue q = new DelayQueue(); |
217 |
|
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q.offer(null); |
218 |
dl |
1.4 |
shouldThrow(); |
219 |
jsr166 |
1.20 |
} catch (NullPointerException success) {} |
220 |
dl |
1.1 |
} |
221 |
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|
222 |
dl |
1.4 |
/** |
223 |
dl |
1.6 |
* add(null) throws NPE |
224 |
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*/ |
225 |
|
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public void testAddNull() { |
226 |
jsr166 |
1.18 |
try { |
227 |
dl |
1.6 |
DelayQueue q = new DelayQueue(); |
228 |
|
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q.add(null); |
229 |
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shouldThrow(); |
230 |
jsr166 |
1.20 |
} catch (NullPointerException success) {} |
231 |
dl |
1.6 |
} |
232 |
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|
233 |
|
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/** |
234 |
dl |
1.5 |
* offer non-null succeeds |
235 |
dl |
1.4 |
*/ |
236 |
dl |
1.1 |
public void testOffer() { |
237 |
|
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DelayQueue q = new DelayQueue(); |
238 |
|
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assertTrue(q.offer(new PDelay(0))); |
239 |
|
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assertTrue(q.offer(new PDelay(1))); |
240 |
|
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} |
241 |
|
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|
242 |
dl |
1.4 |
/** |
243 |
dl |
1.5 |
* add succeeds |
244 |
dl |
1.4 |
*/ |
245 |
|
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public void testAdd() { |
246 |
dl |
1.1 |
DelayQueue q = new DelayQueue(); |
247 |
dl |
1.3 |
for (int i = 0; i < SIZE; ++i) { |
248 |
dl |
1.1 |
assertEquals(i, q.size()); |
249 |
|
|
assertTrue(q.add(new PDelay(i))); |
250 |
|
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} |
251 |
|
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} |
252 |
|
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|
253 |
dl |
1.4 |
/** |
254 |
dl |
1.5 |
* addAll(null) throws NPE |
255 |
dl |
1.4 |
*/ |
256 |
|
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public void testAddAll1() { |
257 |
dl |
1.1 |
try { |
258 |
|
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DelayQueue q = new DelayQueue(); |
259 |
|
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q.addAll(null); |
260 |
dl |
1.4 |
shouldThrow(); |
261 |
jsr166 |
1.20 |
} catch (NullPointerException success) {} |
262 |
dl |
1.1 |
} |
263 |
dl |
1.6 |
|
264 |
|
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|
265 |
|
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/** |
266 |
|
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* addAll(this) throws IAE |
267 |
|
|
*/ |
268 |
|
|
public void testAddAllSelf() { |
269 |
|
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try { |
270 |
|
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DelayQueue q = populatedQueue(SIZE); |
271 |
|
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q.addAll(q); |
272 |
|
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shouldThrow(); |
273 |
jsr166 |
1.20 |
} catch (IllegalArgumentException success) {} |
274 |
dl |
1.6 |
} |
275 |
|
|
|
276 |
dl |
1.4 |
/** |
277 |
dl |
1.5 |
* addAll of a collection with null elements throws NPE |
278 |
dl |
1.4 |
*/ |
279 |
|
|
public void testAddAll2() { |
280 |
dl |
1.1 |
try { |
281 |
|
|
DelayQueue q = new DelayQueue(); |
282 |
dl |
1.3 |
PDelay[] ints = new PDelay[SIZE]; |
283 |
dl |
1.1 |
q.addAll(Arrays.asList(ints)); |
284 |
dl |
1.4 |
shouldThrow(); |
285 |
jsr166 |
1.20 |
} catch (NullPointerException success) {} |
286 |
dl |
1.1 |
} |
287 |
dl |
1.4 |
/** |
288 |
dl |
1.5 |
* addAll of a collection with any null elements throws NPE after |
289 |
|
|
* possibly adding some elements |
290 |
dl |
1.4 |
*/ |
291 |
|
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public void testAddAll3() { |
292 |
dl |
1.1 |
try { |
293 |
|
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DelayQueue q = new DelayQueue(); |
294 |
dl |
1.3 |
PDelay[] ints = new PDelay[SIZE]; |
295 |
|
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for (int i = 0; i < SIZE-1; ++i) |
296 |
dl |
1.1 |
ints[i] = new PDelay(i); |
297 |
|
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q.addAll(Arrays.asList(ints)); |
298 |
dl |
1.4 |
shouldThrow(); |
299 |
jsr166 |
1.20 |
} catch (NullPointerException success) {} |
300 |
dl |
1.1 |
} |
301 |
|
|
|
302 |
dl |
1.4 |
/** |
303 |
dl |
1.5 |
* Queue contains all elements of successful addAll |
304 |
dl |
1.4 |
*/ |
305 |
|
|
public void testAddAll5() { |
306 |
jsr166 |
1.21 |
PDelay[] empty = new PDelay[0]; |
307 |
|
|
PDelay[] ints = new PDelay[SIZE]; |
308 |
|
|
for (int i = SIZE-1; i >= 0; --i) |
309 |
|
|
ints[i] = new PDelay(i); |
310 |
|
|
DelayQueue q = new DelayQueue(); |
311 |
|
|
assertFalse(q.addAll(Arrays.asList(empty))); |
312 |
|
|
assertTrue(q.addAll(Arrays.asList(ints))); |
313 |
|
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for (int i = 0; i < SIZE; ++i) |
314 |
|
|
assertEquals(ints[i], q.poll()); |
315 |
dl |
1.1 |
} |
316 |
|
|
|
317 |
dl |
1.4 |
/** |
318 |
dl |
1.5 |
* put(null) throws NPE |
319 |
dl |
1.4 |
*/ |
320 |
dl |
1.1 |
public void testPutNull() { |
321 |
jsr166 |
1.18 |
try { |
322 |
dl |
1.1 |
DelayQueue q = new DelayQueue(); |
323 |
|
|
q.put(null); |
324 |
dl |
1.4 |
shouldThrow(); |
325 |
jsr166 |
1.20 |
} catch (NullPointerException success) {} |
326 |
dl |
1.1 |
} |
327 |
|
|
|
328 |
dl |
1.4 |
/** |
329 |
dl |
1.5 |
* all elements successfully put are contained |
330 |
dl |
1.4 |
*/ |
331 |
dl |
1.1 |
public void testPut() { |
332 |
jsr166 |
1.20 |
DelayQueue q = new DelayQueue(); |
333 |
|
|
for (int i = 0; i < SIZE; ++i) { |
334 |
|
|
PDelay I = new PDelay(i); |
335 |
|
|
q.put(I); |
336 |
|
|
assertTrue(q.contains(I)); |
337 |
dl |
1.1 |
} |
338 |
jsr166 |
1.20 |
assertEquals(SIZE, q.size()); |
339 |
dl |
1.1 |
} |
340 |
|
|
|
341 |
dl |
1.4 |
/** |
342 |
dl |
1.5 |
* put doesn't block waiting for take |
343 |
dl |
1.4 |
*/ |
344 |
jsr166 |
1.20 |
public void testPutWithTake() throws InterruptedException { |
345 |
dl |
1.1 |
final DelayQueue q = new DelayQueue(); |
346 |
jsr166 |
1.20 |
Thread t = new Thread(new CheckedRunnable() { |
347 |
|
|
public void realRun() { |
348 |
|
|
q.put(new PDelay(0)); |
349 |
|
|
q.put(new PDelay(0)); |
350 |
|
|
q.put(new PDelay(0)); |
351 |
|
|
q.put(new PDelay(0)); |
352 |
|
|
}}); |
353 |
|
|
|
354 |
|
|
t.start(); |
355 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
356 |
|
|
q.take(); |
357 |
|
|
t.interrupt(); |
358 |
|
|
t.join(); |
359 |
dl |
1.1 |
} |
360 |
|
|
|
361 |
dl |
1.4 |
/** |
362 |
dl |
1.5 |
* timed offer does not time out |
363 |
dl |
1.4 |
*/ |
364 |
jsr166 |
1.20 |
public void testTimedOffer() throws InterruptedException { |
365 |
dl |
1.1 |
final DelayQueue q = new DelayQueue(); |
366 |
jsr166 |
1.20 |
Thread t = new Thread(new CheckedRunnable() { |
367 |
|
|
public void realRun() throws InterruptedException { |
368 |
|
|
q.put(new PDelay(0)); |
369 |
|
|
q.put(new PDelay(0)); |
370 |
jsr166 |
1.24 |
assertTrue(q.offer(new PDelay(0), SHORT_DELAY_MS, MILLISECONDS)); |
371 |
|
|
assertTrue(q.offer(new PDelay(0), LONG_DELAY_MS, MILLISECONDS)); |
372 |
jsr166 |
1.20 |
}}); |
373 |
jsr166 |
1.15 |
|
374 |
jsr166 |
1.20 |
t.start(); |
375 |
|
|
Thread.sleep(SMALL_DELAY_MS); |
376 |
|
|
t.interrupt(); |
377 |
|
|
t.join(); |
378 |
dl |
1.1 |
} |
379 |
|
|
|
380 |
dl |
1.4 |
/** |
381 |
dl |
1.5 |
* take retrieves elements in priority order |
382 |
dl |
1.4 |
*/ |
383 |
jsr166 |
1.20 |
public void testTake() throws InterruptedException { |
384 |
|
|
DelayQueue q = populatedQueue(SIZE); |
385 |
|
|
for (int i = 0; i < SIZE; ++i) { |
386 |
|
|
assertEquals(new PDelay(i), ((PDelay)q.take())); |
387 |
jsr166 |
1.18 |
} |
388 |
dl |
1.1 |
} |
389 |
|
|
|
390 |
dl |
1.4 |
/** |
391 |
dl |
1.5 |
* take blocks interruptibly when empty |
392 |
dl |
1.4 |
*/ |
393 |
jsr166 |
1.20 |
public void testTakeFromEmpty() throws InterruptedException { |
394 |
dl |
1.1 |
final DelayQueue q = new DelayQueue(); |
395 |
jsr166 |
1.20 |
Thread t = new ThreadShouldThrow(InterruptedException.class) { |
396 |
|
|
public void realRun() throws InterruptedException { |
397 |
|
|
q.take(); |
398 |
|
|
}}; |
399 |
|
|
|
400 |
|
|
t.start(); |
401 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
402 |
|
|
t.interrupt(); |
403 |
|
|
t.join(); |
404 |
dl |
1.1 |
} |
405 |
|
|
|
406 |
dl |
1.4 |
/** |
407 |
dl |
1.5 |
* Take removes existing elements until empty, then blocks interruptibly |
408 |
dl |
1.4 |
*/ |
409 |
jsr166 |
1.20 |
public void testBlockingTake() throws InterruptedException { |
410 |
jsr166 |
1.25 |
final DelayQueue q = populatedQueue(SIZE); |
411 |
|
|
Thread t = new Thread(new CheckedRunnable() { |
412 |
jsr166 |
1.20 |
public void realRun() throws InterruptedException { |
413 |
|
|
for (int i = 0; i < SIZE; ++i) { |
414 |
jsr166 |
1.25 |
assertEquals(new PDelay(i), ((PDelay)q.take())); |
415 |
jsr166 |
1.20 |
} |
416 |
jsr166 |
1.25 |
try { |
417 |
|
|
q.take(); |
418 |
|
|
shouldThrow(); |
419 |
|
|
} catch (InterruptedException success) {} |
420 |
|
|
}}); |
421 |
jsr166 |
1.20 |
|
422 |
dl |
1.1 |
t.start(); |
423 |
jsr166 |
1.20 |
Thread.sleep(SHORT_DELAY_MS); |
424 |
|
|
t.interrupt(); |
425 |
|
|
t.join(); |
426 |
dl |
1.1 |
} |
427 |
|
|
|
428 |
|
|
|
429 |
dl |
1.4 |
/** |
430 |
dl |
1.5 |
* poll succeeds unless empty |
431 |
dl |
1.4 |
*/ |
432 |
|
|
public void testPoll() { |
433 |
dl |
1.3 |
DelayQueue q = populatedQueue(SIZE); |
434 |
|
|
for (int i = 0; i < SIZE; ++i) { |
435 |
dl |
1.1 |
assertEquals(new PDelay(i), ((PDelay)q.poll())); |
436 |
|
|
} |
437 |
jsr166 |
1.18 |
assertNull(q.poll()); |
438 |
dl |
1.1 |
} |
439 |
|
|
|
440 |
dl |
1.4 |
/** |
441 |
dl |
1.5 |
* timed pool with zero timeout succeeds when non-empty, else times out |
442 |
dl |
1.4 |
*/ |
443 |
jsr166 |
1.20 |
public void testTimedPoll0() throws InterruptedException { |
444 |
|
|
DelayQueue q = populatedQueue(SIZE); |
445 |
|
|
for (int i = 0; i < SIZE; ++i) { |
446 |
|
|
assertEquals(new PDelay(i), ((PDelay)q.poll(0, MILLISECONDS))); |
447 |
jsr166 |
1.18 |
} |
448 |
jsr166 |
1.20 |
assertNull(q.poll(0, MILLISECONDS)); |
449 |
dl |
1.1 |
} |
450 |
|
|
|
451 |
dl |
1.4 |
/** |
452 |
dl |
1.5 |
* timed pool with nonzero timeout succeeds when non-empty, else times out |
453 |
dl |
1.4 |
*/ |
454 |
jsr166 |
1.20 |
public void testTimedPoll() throws InterruptedException { |
455 |
|
|
DelayQueue q = populatedQueue(SIZE); |
456 |
|
|
for (int i = 0; i < SIZE; ++i) { |
457 |
|
|
assertEquals(new PDelay(i), ((PDelay)q.poll(SHORT_DELAY_MS, MILLISECONDS))); |
458 |
jsr166 |
1.18 |
} |
459 |
jsr166 |
1.20 |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
460 |
dl |
1.1 |
} |
461 |
|
|
|
462 |
dl |
1.4 |
/** |
463 |
dl |
1.5 |
* Interrupted timed poll throws InterruptedException instead of |
464 |
|
|
* returning timeout status |
465 |
dl |
1.4 |
*/ |
466 |
jsr166 |
1.20 |
public void testInterruptedTimedPoll() throws InterruptedException { |
467 |
|
|
Thread t = new Thread(new CheckedRunnable() { |
468 |
|
|
public void realRun() throws InterruptedException { |
469 |
|
|
DelayQueue q = populatedQueue(SIZE); |
470 |
|
|
for (int i = 0; i < SIZE; ++i) { |
471 |
|
|
assertEquals(new PDelay(i), ((PDelay)q.poll(SHORT_DELAY_MS, MILLISECONDS))); |
472 |
|
|
} |
473 |
|
|
try { |
474 |
jsr166 |
1.22 |
q.poll(SMALL_DELAY_MS, MILLISECONDS); |
475 |
jsr166 |
1.20 |
shouldThrow(); |
476 |
|
|
} catch (InterruptedException success) {} |
477 |
|
|
}}); |
478 |
|
|
|
479 |
dl |
1.1 |
t.start(); |
480 |
jsr166 |
1.20 |
Thread.sleep(SHORT_DELAY_MS); |
481 |
|
|
t.interrupt(); |
482 |
|
|
t.join(); |
483 |
dl |
1.1 |
} |
484 |
|
|
|
485 |
dl |
1.4 |
/** |
486 |
dl |
1.5 |
* timed poll before a delayed offer fails; after offer succeeds; |
487 |
|
|
* on interruption throws |
488 |
dl |
1.4 |
*/ |
489 |
jsr166 |
1.20 |
public void testTimedPollWithOffer() throws InterruptedException { |
490 |
dl |
1.1 |
final DelayQueue q = new DelayQueue(); |
491 |
jsr166 |
1.23 |
final PDelay pdelay = new PDelay(0); |
492 |
jsr166 |
1.20 |
Thread t = new Thread(new CheckedRunnable() { |
493 |
|
|
public void realRun() throws InterruptedException { |
494 |
|
|
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
495 |
jsr166 |
1.23 |
assertSame(pdelay, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
496 |
jsr166 |
1.20 |
try { |
497 |
|
|
q.poll(LONG_DELAY_MS, MILLISECONDS); |
498 |
|
|
shouldThrow(); |
499 |
|
|
} catch (InterruptedException success) {} |
500 |
|
|
}}); |
501 |
|
|
|
502 |
|
|
t.start(); |
503 |
|
|
Thread.sleep(SMALL_DELAY_MS); |
504 |
jsr166 |
1.23 |
assertTrue(q.offer(pdelay, SHORT_DELAY_MS, MILLISECONDS)); |
505 |
jsr166 |
1.20 |
t.interrupt(); |
506 |
|
|
t.join(); |
507 |
jsr166 |
1.15 |
} |
508 |
dl |
1.1 |
|
509 |
|
|
|
510 |
dl |
1.4 |
/** |
511 |
dl |
1.5 |
* peek returns next element, or null if empty |
512 |
dl |
1.4 |
*/ |
513 |
|
|
public void testPeek() { |
514 |
dl |
1.3 |
DelayQueue q = populatedQueue(SIZE); |
515 |
|
|
for (int i = 0; i < SIZE; ++i) { |
516 |
dl |
1.1 |
assertEquals(new PDelay(i), ((PDelay)q.peek())); |
517 |
jsr166 |
1.26 |
assertEquals(new PDelay(i), ((PDelay)q.poll())); |
518 |
dl |
1.12 |
if (q.isEmpty()) |
519 |
|
|
assertNull(q.peek()); |
520 |
|
|
else |
521 |
jsr166 |
1.26 |
assertFalse(new PDelay(i).equals(q.peek())); |
522 |
dl |
1.1 |
} |
523 |
jsr166 |
1.18 |
assertNull(q.peek()); |
524 |
dl |
1.1 |
} |
525 |
|
|
|
526 |
dl |
1.4 |
/** |
527 |
dl |
1.5 |
* element returns next element, or throws NSEE if empty |
528 |
dl |
1.4 |
*/ |
529 |
|
|
public void testElement() { |
530 |
dl |
1.3 |
DelayQueue q = populatedQueue(SIZE); |
531 |
|
|
for (int i = 0; i < SIZE; ++i) { |
532 |
dl |
1.1 |
assertEquals(new PDelay(i), ((PDelay)q.element())); |
533 |
|
|
q.poll(); |
534 |
|
|
} |
535 |
|
|
try { |
536 |
|
|
q.element(); |
537 |
dl |
1.4 |
shouldThrow(); |
538 |
jsr166 |
1.20 |
} catch (NoSuchElementException success) {} |
539 |
dl |
1.1 |
} |
540 |
|
|
|
541 |
dl |
1.4 |
/** |
542 |
dl |
1.5 |
* remove removes next element, or throws NSEE if empty |
543 |
dl |
1.4 |
*/ |
544 |
|
|
public void testRemove() { |
545 |
dl |
1.3 |
DelayQueue q = populatedQueue(SIZE); |
546 |
|
|
for (int i = 0; i < SIZE; ++i) { |
547 |
dl |
1.1 |
assertEquals(new PDelay(i), ((PDelay)q.remove())); |
548 |
|
|
} |
549 |
|
|
try { |
550 |
|
|
q.remove(); |
551 |
dl |
1.4 |
shouldThrow(); |
552 |
jsr166 |
1.20 |
} catch (NoSuchElementException success) {} |
553 |
dl |
1.1 |
} |
554 |
|
|
|
555 |
dl |
1.4 |
/** |
556 |
dl |
1.5 |
* remove(x) removes x and returns true if present |
557 |
dl |
1.4 |
*/ |
558 |
|
|
public void testRemoveElement() { |
559 |
dl |
1.3 |
DelayQueue q = populatedQueue(SIZE); |
560 |
|
|
for (int i = 1; i < SIZE; i+=2) { |
561 |
dl |
1.1 |
assertTrue(q.remove(new PDelay(i))); |
562 |
|
|
} |
563 |
dl |
1.3 |
for (int i = 0; i < SIZE; i+=2) { |
564 |
dl |
1.1 |
assertTrue(q.remove(new PDelay(i))); |
565 |
|
|
assertFalse(q.remove(new PDelay(i+1))); |
566 |
|
|
} |
567 |
dl |
1.2 |
assertTrue(q.isEmpty()); |
568 |
dl |
1.1 |
} |
569 |
jsr166 |
1.15 |
|
570 |
dl |
1.4 |
/** |
571 |
dl |
1.5 |
* contains(x) reports true when elements added but not yet removed |
572 |
dl |
1.4 |
*/ |
573 |
|
|
public void testContains() { |
574 |
dl |
1.3 |
DelayQueue q = populatedQueue(SIZE); |
575 |
|
|
for (int i = 0; i < SIZE; ++i) { |
576 |
dl |
1.1 |
assertTrue(q.contains(new PDelay(i))); |
577 |
|
|
q.poll(); |
578 |
|
|
assertFalse(q.contains(new PDelay(i))); |
579 |
|
|
} |
580 |
|
|
} |
581 |
|
|
|
582 |
dl |
1.4 |
/** |
583 |
dl |
1.5 |
* clear removes all elements |
584 |
dl |
1.4 |
*/ |
585 |
|
|
public void testClear() { |
586 |
dl |
1.3 |
DelayQueue q = populatedQueue(SIZE); |
587 |
dl |
1.1 |
q.clear(); |
588 |
|
|
assertTrue(q.isEmpty()); |
589 |
|
|
assertEquals(0, q.size()); |
590 |
|
|
assertEquals(NOCAP, q.remainingCapacity()); |
591 |
dl |
1.11 |
PDelay x = new PDelay(1); |
592 |
|
|
q.add(x); |
593 |
dl |
1.1 |
assertFalse(q.isEmpty()); |
594 |
dl |
1.11 |
assertTrue(q.contains(x)); |
595 |
dl |
1.1 |
q.clear(); |
596 |
|
|
assertTrue(q.isEmpty()); |
597 |
|
|
} |
598 |
|
|
|
599 |
dl |
1.4 |
/** |
600 |
dl |
1.5 |
* containsAll(c) is true when c contains a subset of elements |
601 |
dl |
1.4 |
*/ |
602 |
|
|
public void testContainsAll() { |
603 |
dl |
1.3 |
DelayQueue q = populatedQueue(SIZE); |
604 |
dl |
1.1 |
DelayQueue p = new DelayQueue(); |
605 |
dl |
1.3 |
for (int i = 0; i < SIZE; ++i) { |
606 |
dl |
1.1 |
assertTrue(q.containsAll(p)); |
607 |
|
|
assertFalse(p.containsAll(q)); |
608 |
|
|
p.add(new PDelay(i)); |
609 |
|
|
} |
610 |
|
|
assertTrue(p.containsAll(q)); |
611 |
|
|
} |
612 |
|
|
|
613 |
dl |
1.4 |
/** |
614 |
dl |
1.5 |
* retainAll(c) retains only those elements of c and reports true if changed |
615 |
dl |
1.4 |
*/ |
616 |
|
|
public void testRetainAll() { |
617 |
dl |
1.3 |
DelayQueue q = populatedQueue(SIZE); |
618 |
|
|
DelayQueue p = populatedQueue(SIZE); |
619 |
|
|
for (int i = 0; i < SIZE; ++i) { |
620 |
dl |
1.1 |
boolean changed = q.retainAll(p); |
621 |
|
|
if (i == 0) |
622 |
|
|
assertFalse(changed); |
623 |
|
|
else |
624 |
|
|
assertTrue(changed); |
625 |
|
|
|
626 |
|
|
assertTrue(q.containsAll(p)); |
627 |
dl |
1.3 |
assertEquals(SIZE-i, q.size()); |
628 |
dl |
1.1 |
p.remove(); |
629 |
|
|
} |
630 |
|
|
} |
631 |
|
|
|
632 |
dl |
1.4 |
/** |
633 |
dl |
1.5 |
* removeAll(c) removes only those elements of c and reports true if changed |
634 |
dl |
1.4 |
*/ |
635 |
|
|
public void testRemoveAll() { |
636 |
dl |
1.3 |
for (int i = 1; i < SIZE; ++i) { |
637 |
|
|
DelayQueue q = populatedQueue(SIZE); |
638 |
|
|
DelayQueue p = populatedQueue(i); |
639 |
dl |
1.1 |
assertTrue(q.removeAll(p)); |
640 |
dl |
1.3 |
assertEquals(SIZE-i, q.size()); |
641 |
dl |
1.1 |
for (int j = 0; j < i; ++j) { |
642 |
|
|
PDelay I = (PDelay)(p.remove()); |
643 |
|
|
assertFalse(q.contains(I)); |
644 |
|
|
} |
645 |
|
|
} |
646 |
|
|
} |
647 |
|
|
|
648 |
dl |
1.4 |
/** |
649 |
dl |
1.5 |
* toArray contains all elements |
650 |
dl |
1.4 |
*/ |
651 |
jsr166 |
1.20 |
public void testToArray() throws InterruptedException { |
652 |
dl |
1.3 |
DelayQueue q = populatedQueue(SIZE); |
653 |
jsr166 |
1.18 |
Object[] o = q.toArray(); |
654 |
dl |
1.1 |
Arrays.sort(o); |
655 |
jsr166 |
1.18 |
for (int i = 0; i < o.length; i++) |
656 |
|
|
assertEquals(o[i], q.take()); |
657 |
dl |
1.1 |
} |
658 |
|
|
|
659 |
dl |
1.4 |
/** |
660 |
dl |
1.5 |
* toArray(a) contains all elements |
661 |
dl |
1.4 |
*/ |
662 |
jsr166 |
1.20 |
public void testToArray2() throws InterruptedException { |
663 |
dl |
1.3 |
DelayQueue q = populatedQueue(SIZE); |
664 |
jsr166 |
1.18 |
PDelay[] ints = new PDelay[SIZE]; |
665 |
|
|
ints = (PDelay[])q.toArray(ints); |
666 |
dl |
1.1 |
Arrays.sort(ints); |
667 |
jsr166 |
1.20 |
for (int i = 0; i < ints.length; i++) |
668 |
|
|
assertEquals(ints[i], q.take()); |
669 |
dl |
1.1 |
} |
670 |
dl |
1.6 |
|
671 |
|
|
|
672 |
|
|
/** |
673 |
|
|
* toArray(null) throws NPE |
674 |
|
|
*/ |
675 |
|
|
public void testToArray_BadArg() { |
676 |
jsr166 |
1.26 |
DelayQueue q = populatedQueue(SIZE); |
677 |
jsr166 |
1.18 |
try { |
678 |
|
|
Object o[] = q.toArray(null); |
679 |
|
|
shouldThrow(); |
680 |
|
|
} catch (NullPointerException success) {} |
681 |
dl |
1.6 |
} |
682 |
|
|
|
683 |
|
|
/** |
684 |
dl |
1.8 |
* toArray with incompatible array type throws CCE |
685 |
dl |
1.6 |
*/ |
686 |
|
|
public void testToArray1_BadArg() { |
687 |
jsr166 |
1.26 |
DelayQueue q = populatedQueue(SIZE); |
688 |
jsr166 |
1.18 |
try { |
689 |
jsr166 |
1.26 |
Object o[] = q.toArray(new String[10]); |
690 |
jsr166 |
1.18 |
shouldThrow(); |
691 |
jsr166 |
1.20 |
} catch (ArrayStoreException success) {} |
692 |
dl |
1.6 |
} |
693 |
jsr166 |
1.15 |
|
694 |
dl |
1.4 |
/** |
695 |
dl |
1.5 |
* iterator iterates through all elements |
696 |
dl |
1.4 |
*/ |
697 |
|
|
public void testIterator() { |
698 |
dl |
1.3 |
DelayQueue q = populatedQueue(SIZE); |
699 |
dl |
1.1 |
int i = 0; |
700 |
jsr166 |
1.18 |
Iterator it = q.iterator(); |
701 |
jsr166 |
1.16 |
while (it.hasNext()) { |
702 |
dl |
1.1 |
assertTrue(q.contains(it.next())); |
703 |
|
|
++i; |
704 |
|
|
} |
705 |
dl |
1.3 |
assertEquals(i, SIZE); |
706 |
dl |
1.1 |
} |
707 |
|
|
|
708 |
dl |
1.4 |
/** |
709 |
dl |
1.5 |
* iterator.remove removes current element |
710 |
dl |
1.4 |
*/ |
711 |
jsr166 |
1.31 |
public void testIteratorRemove() { |
712 |
dl |
1.1 |
final DelayQueue q = new DelayQueue(); |
713 |
|
|
q.add(new PDelay(2)); |
714 |
|
|
q.add(new PDelay(1)); |
715 |
|
|
q.add(new PDelay(3)); |
716 |
|
|
Iterator it = q.iterator(); |
717 |
|
|
it.next(); |
718 |
|
|
it.remove(); |
719 |
|
|
it = q.iterator(); |
720 |
|
|
assertEquals(it.next(), new PDelay(2)); |
721 |
|
|
assertEquals(it.next(), new PDelay(3)); |
722 |
|
|
assertFalse(it.hasNext()); |
723 |
|
|
} |
724 |
|
|
|
725 |
|
|
|
726 |
dl |
1.4 |
/** |
727 |
dl |
1.5 |
* toString contains toStrings of elements |
728 |
dl |
1.4 |
*/ |
729 |
|
|
public void testToString() { |
730 |
dl |
1.3 |
DelayQueue q = populatedQueue(SIZE); |
731 |
dl |
1.1 |
String s = q.toString(); |
732 |
dl |
1.3 |
for (int i = 0; i < SIZE; ++i) { |
733 |
|
|
assertTrue(s.indexOf(String.valueOf(Integer.MIN_VALUE+i)) >= 0); |
734 |
dl |
1.1 |
} |
735 |
jsr166 |
1.15 |
} |
736 |
dl |
1.1 |
|
737 |
dl |
1.4 |
/** |
738 |
dl |
1.5 |
* offer transfers elements across Executor tasks |
739 |
dl |
1.4 |
*/ |
740 |
dl |
1.1 |
public void testPollInExecutor() { |
741 |
|
|
final DelayQueue q = new DelayQueue(); |
742 |
|
|
ExecutorService executor = Executors.newFixedThreadPool(2); |
743 |
jsr166 |
1.20 |
executor.execute(new CheckedRunnable() { |
744 |
|
|
public void realRun() throws InterruptedException { |
745 |
jsr166 |
1.27 |
assertNull(q.poll()); |
746 |
|
|
assertTrue(null != q.poll(MEDIUM_DELAY_MS, MILLISECONDS)); |
747 |
|
|
assertTrue(q.isEmpty()); |
748 |
jsr166 |
1.20 |
}}); |
749 |
|
|
|
750 |
|
|
executor.execute(new CheckedRunnable() { |
751 |
|
|
public void realRun() throws InterruptedException { |
752 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
753 |
|
|
q.put(new PDelay(1)); |
754 |
|
|
}}); |
755 |
dl |
1.1 |
|
756 |
dl |
1.3 |
joinPool(executor); |
757 |
dl |
1.1 |
} |
758 |
|
|
|
759 |
|
|
|
760 |
dl |
1.4 |
/** |
761 |
dl |
1.8 |
* Delayed actions do not occur until their delay elapses |
762 |
dl |
1.4 |
*/ |
763 |
jsr166 |
1.20 |
public void testDelay() throws InterruptedException { |
764 |
dl |
1.1 |
DelayQueue q = new DelayQueue(); |
765 |
dl |
1.3 |
NanoDelay[] elements = new NanoDelay[SIZE]; |
766 |
|
|
for (int i = 0; i < SIZE; ++i) { |
767 |
|
|
elements[i] = new NanoDelay(1000000000L + 1000000L * (SIZE - i)); |
768 |
dl |
1.1 |
} |
769 |
dl |
1.3 |
for (int i = 0; i < SIZE; ++i) { |
770 |
dl |
1.1 |
q.add(elements[i]); |
771 |
|
|
} |
772 |
|
|
|
773 |
jsr166 |
1.20 |
long last = 0; |
774 |
|
|
for (int i = 0; i < SIZE; ++i) { |
775 |
|
|
NanoDelay e = (NanoDelay)(q.take()); |
776 |
|
|
long tt = e.getTriggerTime(); |
777 |
|
|
assertTrue(tt <= System.nanoTime()); |
778 |
|
|
if (i != 0) |
779 |
|
|
assertTrue(tt >= last); |
780 |
|
|
last = tt; |
781 |
dl |
1.1 |
} |
782 |
|
|
} |
783 |
dl |
1.6 |
|
784 |
dl |
1.12 |
/** |
785 |
|
|
* peek of a non-empty queue returns non-null even if not expired |
786 |
|
|
*/ |
787 |
|
|
public void testPeekDelayed() { |
788 |
|
|
DelayQueue q = new DelayQueue(); |
789 |
|
|
q.add(new NanoDelay(Long.MAX_VALUE)); |
790 |
|
|
assert(q.peek() != null); |
791 |
|
|
} |
792 |
|
|
|
793 |
dl |
1.13 |
|
794 |
dl |
1.12 |
/** |
795 |
|
|
* poll of a non-empty queue returns null if no expired elements. |
796 |
|
|
*/ |
797 |
|
|
public void testPollDelayed() { |
798 |
|
|
DelayQueue q = new DelayQueue(); |
799 |
|
|
q.add(new NanoDelay(Long.MAX_VALUE)); |
800 |
|
|
assertNull(q.poll()); |
801 |
|
|
} |
802 |
dl |
1.6 |
|
803 |
|
|
/** |
804 |
dl |
1.13 |
* timed poll of a non-empty queue returns null if no expired elements. |
805 |
|
|
*/ |
806 |
jsr166 |
1.20 |
public void testTimedPollDelayed() throws InterruptedException { |
807 |
dl |
1.13 |
DelayQueue q = new DelayQueue(); |
808 |
dl |
1.14 |
q.add(new NanoDelay(LONG_DELAY_MS * 1000000L)); |
809 |
jsr166 |
1.20 |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
810 |
dl |
1.13 |
} |
811 |
|
|
|
812 |
|
|
/** |
813 |
dl |
1.6 |
* drainTo(null) throws NPE |
814 |
jsr166 |
1.15 |
*/ |
815 |
dl |
1.6 |
public void testDrainToNull() { |
816 |
|
|
DelayQueue q = populatedQueue(SIZE); |
817 |
|
|
try { |
818 |
|
|
q.drainTo(null); |
819 |
|
|
shouldThrow(); |
820 |
jsr166 |
1.20 |
} catch (NullPointerException success) {} |
821 |
dl |
1.6 |
} |
822 |
|
|
|
823 |
|
|
/** |
824 |
|
|
* drainTo(this) throws IAE |
825 |
jsr166 |
1.15 |
*/ |
826 |
dl |
1.6 |
public void testDrainToSelf() { |
827 |
|
|
DelayQueue q = populatedQueue(SIZE); |
828 |
|
|
try { |
829 |
|
|
q.drainTo(q); |
830 |
|
|
shouldThrow(); |
831 |
jsr166 |
1.20 |
} catch (IllegalArgumentException success) {} |
832 |
dl |
1.6 |
} |
833 |
|
|
|
834 |
|
|
/** |
835 |
|
|
* drainTo(c) empties queue into another collection c |
836 |
jsr166 |
1.15 |
*/ |
837 |
dl |
1.6 |
public void testDrainTo() { |
838 |
dl |
1.11 |
DelayQueue q = new DelayQueue(); |
839 |
|
|
PDelay[] elems = new PDelay[SIZE]; |
840 |
|
|
for (int i = 0; i < SIZE; ++i) { |
841 |
|
|
elems[i] = new PDelay(i); |
842 |
|
|
q.add(elems[i]); |
843 |
|
|
} |
844 |
dl |
1.6 |
ArrayList l = new ArrayList(); |
845 |
|
|
q.drainTo(l); |
846 |
|
|
assertEquals(q.size(), 0); |
847 |
jsr166 |
1.15 |
for (int i = 0; i < SIZE; ++i) |
848 |
dl |
1.11 |
assertEquals(l.get(i), elems[i]); |
849 |
|
|
q.add(elems[0]); |
850 |
|
|
q.add(elems[1]); |
851 |
|
|
assertFalse(q.isEmpty()); |
852 |
|
|
assertTrue(q.contains(elems[0])); |
853 |
|
|
assertTrue(q.contains(elems[1])); |
854 |
|
|
l.clear(); |
855 |
|
|
q.drainTo(l); |
856 |
|
|
assertEquals(q.size(), 0); |
857 |
|
|
assertEquals(l.size(), 2); |
858 |
jsr166 |
1.15 |
for (int i = 0; i < 2; ++i) |
859 |
dl |
1.11 |
assertEquals(l.get(i), elems[i]); |
860 |
dl |
1.6 |
} |
861 |
|
|
|
862 |
|
|
/** |
863 |
|
|
* drainTo empties queue |
864 |
jsr166 |
1.15 |
*/ |
865 |
jsr166 |
1.20 |
public void testDrainToWithActivePut() throws InterruptedException { |
866 |
dl |
1.6 |
final DelayQueue q = populatedQueue(SIZE); |
867 |
jsr166 |
1.20 |
Thread t = new Thread(new CheckedRunnable() { |
868 |
|
|
public void realRun() { |
869 |
|
|
q.put(new PDelay(SIZE+1)); |
870 |
|
|
}}); |
871 |
|
|
|
872 |
|
|
t.start(); |
873 |
|
|
ArrayList l = new ArrayList(); |
874 |
|
|
q.drainTo(l); |
875 |
|
|
assertTrue(l.size() >= SIZE); |
876 |
|
|
t.join(); |
877 |
|
|
assertTrue(q.size() + l.size() >= SIZE); |
878 |
dl |
1.6 |
} |
879 |
|
|
|
880 |
|
|
/** |
881 |
|
|
* drainTo(null, n) throws NPE |
882 |
jsr166 |
1.15 |
*/ |
883 |
dl |
1.6 |
public void testDrainToNullN() { |
884 |
|
|
DelayQueue q = populatedQueue(SIZE); |
885 |
|
|
try { |
886 |
|
|
q.drainTo(null, 0); |
887 |
|
|
shouldThrow(); |
888 |
jsr166 |
1.20 |
} catch (NullPointerException success) {} |
889 |
dl |
1.6 |
} |
890 |
|
|
|
891 |
|
|
/** |
892 |
|
|
* drainTo(this, n) throws IAE |
893 |
jsr166 |
1.15 |
*/ |
894 |
dl |
1.6 |
public void testDrainToSelfN() { |
895 |
|
|
DelayQueue q = populatedQueue(SIZE); |
896 |
|
|
try { |
897 |
|
|
q.drainTo(q, 0); |
898 |
|
|
shouldThrow(); |
899 |
jsr166 |
1.20 |
} catch (IllegalArgumentException success) {} |
900 |
dl |
1.6 |
} |
901 |
|
|
|
902 |
|
|
/** |
903 |
|
|
* drainTo(c, n) empties first max {n, size} elements of queue into c |
904 |
jsr166 |
1.15 |
*/ |
905 |
dl |
1.6 |
public void testDrainToN() { |
906 |
|
|
for (int i = 0; i < SIZE + 2; ++i) { |
907 |
|
|
DelayQueue q = populatedQueue(SIZE); |
908 |
|
|
ArrayList l = new ArrayList(); |
909 |
|
|
q.drainTo(l, i); |
910 |
|
|
int k = (i < SIZE)? i : SIZE; |
911 |
|
|
assertEquals(q.size(), SIZE-k); |
912 |
|
|
assertEquals(l.size(), k); |
913 |
|
|
} |
914 |
|
|
} |
915 |
|
|
|
916 |
dl |
1.1 |
|
917 |
|
|
} |