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 |
1.10 |
* 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 |
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import java.util.concurrent.*; |
12 |
jsr166 |
1.13 |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
13 |
dl |
1.2 |
import java.io.*; |
14 |
dl |
1.1 |
|
15 |
dl |
1.3 |
public class SynchronousQueueTest extends JSR166TestCase { |
16 |
dl |
1.1 |
|
17 |
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public static void main(String[] args) { |
18 |
jsr166 |
1.21 |
junit.textui.TestRunner.run(suite()); |
19 |
dl |
1.1 |
} |
20 |
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|
21 |
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public static Test suite() { |
22 |
jsr166 |
1.14 |
return new TestSuite(SynchronousQueueTest.class); |
23 |
dl |
1.1 |
} |
24 |
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|
25 |
dl |
1.4 |
/** |
26 |
dl |
1.5 |
* A SynchronousQueue is both empty and full |
27 |
dl |
1.4 |
*/ |
28 |
dl |
1.1 |
public void testEmptyFull() { |
29 |
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SynchronousQueue q = new SynchronousQueue(); |
30 |
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assertTrue(q.isEmpty()); |
31 |
jsr166 |
1.14 |
assertEquals(0, q.size()); |
32 |
dl |
1.1 |
assertEquals(0, q.remainingCapacity()); |
33 |
dl |
1.5 |
assertFalse(q.offer(zero)); |
34 |
dl |
1.1 |
} |
35 |
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|
36 |
dl |
1.4 |
/** |
37 |
dl |
1.8 |
* A fair SynchronousQueue is both empty and full |
38 |
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*/ |
39 |
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public void testFairEmptyFull() { |
40 |
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SynchronousQueue q = new SynchronousQueue(true); |
41 |
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assertTrue(q.isEmpty()); |
42 |
jsr166 |
1.14 |
assertEquals(0, q.size()); |
43 |
dl |
1.8 |
assertEquals(0, q.remainingCapacity()); |
44 |
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assertFalse(q.offer(zero)); |
45 |
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} |
46 |
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|
47 |
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/** |
48 |
dl |
1.5 |
* offer(null) throws NPE |
49 |
dl |
1.4 |
*/ |
50 |
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public void testOfferNull() { |
51 |
jsr166 |
1.14 |
try { |
52 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
53 |
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q.offer(null); |
54 |
dl |
1.4 |
shouldThrow(); |
55 |
jsr166 |
1.13 |
} catch (NullPointerException success) {} |
56 |
dl |
1.1 |
} |
57 |
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|
58 |
dl |
1.4 |
/** |
59 |
dl |
1.6 |
* add(null) throws NPE |
60 |
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*/ |
61 |
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public void testAddNull() { |
62 |
jsr166 |
1.14 |
try { |
63 |
dl |
1.6 |
SynchronousQueue q = new SynchronousQueue(); |
64 |
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q.add(null); |
65 |
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shouldThrow(); |
66 |
jsr166 |
1.13 |
} catch (NullPointerException success) {} |
67 |
dl |
1.6 |
} |
68 |
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|
69 |
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/** |
70 |
dl |
1.5 |
* offer fails if no active taker |
71 |
dl |
1.4 |
*/ |
72 |
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public void testOffer() { |
73 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
74 |
dl |
1.5 |
assertFalse(q.offer(one)); |
75 |
dl |
1.1 |
} |
76 |
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|
77 |
dl |
1.4 |
/** |
78 |
dl |
1.5 |
* add throws ISE if no active taker |
79 |
dl |
1.4 |
*/ |
80 |
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public void testAdd() { |
81 |
jsr166 |
1.14 |
try { |
82 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
83 |
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assertEquals(0, q.remainingCapacity()); |
84 |
dl |
1.5 |
q.add(one); |
85 |
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shouldThrow(); |
86 |
jsr166 |
1.13 |
} catch (IllegalStateException success) {} |
87 |
dl |
1.1 |
} |
88 |
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|
89 |
dl |
1.4 |
/** |
90 |
dl |
1.5 |
* addAll(null) throws NPE |
91 |
dl |
1.4 |
*/ |
92 |
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public void testAddAll1() { |
93 |
dl |
1.1 |
try { |
94 |
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SynchronousQueue q = new SynchronousQueue(); |
95 |
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q.addAll(null); |
96 |
dl |
1.4 |
shouldThrow(); |
97 |
jsr166 |
1.13 |
} catch (NullPointerException success) {} |
98 |
dl |
1.1 |
} |
99 |
dl |
1.6 |
|
100 |
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/** |
101 |
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* addAll(this) throws IAE |
102 |
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*/ |
103 |
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public void testAddAllSelf() { |
104 |
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try { |
105 |
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SynchronousQueue q = new SynchronousQueue(); |
106 |
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q.addAll(q); |
107 |
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shouldThrow(); |
108 |
jsr166 |
1.13 |
} catch (IllegalArgumentException success) {} |
109 |
dl |
1.6 |
} |
110 |
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|
111 |
dl |
1.4 |
/** |
112 |
dl |
1.5 |
* addAll of a collection with null elements throws NPE |
113 |
dl |
1.4 |
*/ |
114 |
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public void testAddAll2() { |
115 |
dl |
1.1 |
try { |
116 |
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SynchronousQueue q = new SynchronousQueue(); |
117 |
dl |
1.3 |
Integer[] ints = new Integer[1]; |
118 |
dl |
1.1 |
q.addAll(Arrays.asList(ints)); |
119 |
dl |
1.4 |
shouldThrow(); |
120 |
jsr166 |
1.13 |
} catch (NullPointerException success) {} |
121 |
dl |
1.1 |
} |
122 |
jsr166 |
1.22 |
|
123 |
dl |
1.4 |
/** |
124 |
dl |
1.5 |
* addAll throws ISE if no active taker |
125 |
dl |
1.4 |
*/ |
126 |
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public void testAddAll4() { |
127 |
dl |
1.1 |
try { |
128 |
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SynchronousQueue q = new SynchronousQueue(); |
129 |
dl |
1.3 |
Integer[] ints = new Integer[1]; |
130 |
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for (int i = 0; i < 1; ++i) |
131 |
dl |
1.1 |
ints[i] = new Integer(i); |
132 |
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q.addAll(Arrays.asList(ints)); |
133 |
dl |
1.4 |
shouldThrow(); |
134 |
jsr166 |
1.13 |
} catch (IllegalStateException success) {} |
135 |
dl |
1.1 |
} |
136 |
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|
137 |
dl |
1.4 |
/** |
138 |
dl |
1.5 |
* put(null) throws NPE |
139 |
dl |
1.4 |
*/ |
140 |
jsr166 |
1.13 |
public void testPutNull() throws InterruptedException { |
141 |
jsr166 |
1.14 |
try { |
142 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
143 |
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q.put(null); |
144 |
dl |
1.4 |
shouldThrow(); |
145 |
jsr166 |
1.13 |
} catch (NullPointerException success) {} |
146 |
dl |
1.1 |
} |
147 |
|
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|
148 |
dl |
1.4 |
/** |
149 |
dl |
1.5 |
* put blocks interruptibly if no active taker |
150 |
dl |
1.4 |
*/ |
151 |
jsr166 |
1.13 |
public void testBlockingPut() throws InterruptedException { |
152 |
jsr166 |
1.14 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
153 |
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public void realRun() throws InterruptedException { |
154 |
jsr166 |
1.13 |
SynchronousQueue q = new SynchronousQueue(); |
155 |
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q.put(zero); |
156 |
|
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}}); |
157 |
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|
158 |
dl |
1.1 |
t.start(); |
159 |
jsr166 |
1.13 |
Thread.sleep(SHORT_DELAY_MS); |
160 |
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t.interrupt(); |
161 |
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t.join(); |
162 |
dl |
1.1 |
} |
163 |
|
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|
164 |
dl |
1.4 |
/** |
165 |
jsr166 |
1.10 |
* put blocks waiting for take |
166 |
dl |
1.4 |
*/ |
167 |
jsr166 |
1.13 |
public void testPutWithTake() throws InterruptedException { |
168 |
dl |
1.1 |
final SynchronousQueue q = new SynchronousQueue(); |
169 |
jsr166 |
1.14 |
Thread t = new Thread(new CheckedRunnable() { |
170 |
|
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public void realRun() throws InterruptedException { |
171 |
jsr166 |
1.13 |
int added = 0; |
172 |
|
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try { |
173 |
jsr166 |
1.19 |
while (true) { |
174 |
|
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q.put(added); |
175 |
|
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++added; |
176 |
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} |
177 |
jsr166 |
1.13 |
} catch (InterruptedException success) { |
178 |
jsr166 |
1.23 |
assertEquals(1, added); |
179 |
dl |
1.1 |
} |
180 |
jsr166 |
1.13 |
}}); |
181 |
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|
182 |
|
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t.start(); |
183 |
|
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Thread.sleep(SHORT_DELAY_MS); |
184 |
jsr166 |
1.19 |
assertEquals(0, q.take()); |
185 |
jsr166 |
1.13 |
Thread.sleep(SHORT_DELAY_MS); |
186 |
|
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t.interrupt(); |
187 |
|
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t.join(); |
188 |
dl |
1.1 |
} |
189 |
|
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|
190 |
dl |
1.4 |
/** |
191 |
dl |
1.5 |
* timed offer times out if elements not taken |
192 |
dl |
1.4 |
*/ |
193 |
jsr166 |
1.13 |
public void testTimedOffer() throws InterruptedException { |
194 |
dl |
1.1 |
final SynchronousQueue q = new SynchronousQueue(); |
195 |
jsr166 |
1.14 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
196 |
|
|
public void realRun() throws InterruptedException { |
197 |
jsr166 |
1.17 |
assertFalse(q.offer(new Object(), SHORT_DELAY_MS, MILLISECONDS)); |
198 |
jsr166 |
1.13 |
q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
199 |
|
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}}); |
200 |
jsr166 |
1.10 |
|
201 |
jsr166 |
1.13 |
t.start(); |
202 |
|
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Thread.sleep(SMALL_DELAY_MS); |
203 |
|
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t.interrupt(); |
204 |
|
|
t.join(); |
205 |
dl |
1.1 |
} |
206 |
|
|
|
207 |
|
|
|
208 |
dl |
1.4 |
/** |
209 |
dl |
1.5 |
* take blocks interruptibly when empty |
210 |
dl |
1.4 |
*/ |
211 |
jsr166 |
1.13 |
public void testTakeFromEmpty() throws InterruptedException { |
212 |
dl |
1.1 |
final SynchronousQueue q = new SynchronousQueue(); |
213 |
jsr166 |
1.14 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
214 |
|
|
public void realRun() throws InterruptedException { |
215 |
jsr166 |
1.13 |
q.take(); |
216 |
|
|
}}); |
217 |
|
|
|
218 |
|
|
t.start(); |
219 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
220 |
|
|
t.interrupt(); |
221 |
|
|
t.join(); |
222 |
dl |
1.1 |
} |
223 |
|
|
|
224 |
dl |
1.8 |
|
225 |
|
|
/** |
226 |
|
|
* put blocks interruptibly if no active taker |
227 |
|
|
*/ |
228 |
jsr166 |
1.13 |
public void testFairBlockingPut() throws InterruptedException { |
229 |
jsr166 |
1.14 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
230 |
|
|
public void realRun() throws InterruptedException { |
231 |
jsr166 |
1.13 |
SynchronousQueue q = new SynchronousQueue(true); |
232 |
|
|
q.put(zero); |
233 |
|
|
}}); |
234 |
|
|
|
235 |
dl |
1.8 |
t.start(); |
236 |
jsr166 |
1.13 |
Thread.sleep(SHORT_DELAY_MS); |
237 |
|
|
t.interrupt(); |
238 |
|
|
t.join(); |
239 |
dl |
1.8 |
} |
240 |
|
|
|
241 |
|
|
/** |
242 |
jsr166 |
1.10 |
* put blocks waiting for take |
243 |
dl |
1.8 |
*/ |
244 |
jsr166 |
1.13 |
public void testFairPutWithTake() throws InterruptedException { |
245 |
dl |
1.8 |
final SynchronousQueue q = new SynchronousQueue(true); |
246 |
jsr166 |
1.14 |
Thread t = new Thread(new CheckedRunnable() { |
247 |
|
|
public void realRun() throws InterruptedException { |
248 |
jsr166 |
1.13 |
int added = 0; |
249 |
|
|
try { |
250 |
jsr166 |
1.19 |
while (true) { |
251 |
|
|
q.put(added); |
252 |
|
|
++added; |
253 |
|
|
} |
254 |
jsr166 |
1.13 |
} catch (InterruptedException success) { |
255 |
jsr166 |
1.23 |
assertEquals(1, added); |
256 |
dl |
1.8 |
} |
257 |
jsr166 |
1.13 |
}}); |
258 |
|
|
|
259 |
|
|
t.start(); |
260 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
261 |
jsr166 |
1.19 |
assertEquals(0, q.take()); |
262 |
jsr166 |
1.13 |
Thread.sleep(SHORT_DELAY_MS); |
263 |
|
|
t.interrupt(); |
264 |
|
|
t.join(); |
265 |
dl |
1.8 |
} |
266 |
|
|
|
267 |
|
|
/** |
268 |
|
|
* timed offer times out if elements not taken |
269 |
|
|
*/ |
270 |
jsr166 |
1.13 |
public void testFairTimedOffer() throws InterruptedException { |
271 |
dl |
1.8 |
final SynchronousQueue q = new SynchronousQueue(true); |
272 |
jsr166 |
1.14 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
273 |
|
|
public void realRun() throws InterruptedException { |
274 |
jsr166 |
1.19 |
assertFalse(q.offer(new Object(), SHORT_DELAY_MS, MILLISECONDS)); |
275 |
jsr166 |
1.13 |
q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
276 |
|
|
}}); |
277 |
jsr166 |
1.10 |
|
278 |
jsr166 |
1.13 |
t.start(); |
279 |
|
|
Thread.sleep(SMALL_DELAY_MS); |
280 |
|
|
t.interrupt(); |
281 |
|
|
t.join(); |
282 |
dl |
1.8 |
} |
283 |
|
|
|
284 |
|
|
|
285 |
|
|
/** |
286 |
|
|
* take blocks interruptibly when empty |
287 |
|
|
*/ |
288 |
jsr166 |
1.13 |
public void testFairTakeFromEmpty() throws InterruptedException { |
289 |
dl |
1.8 |
final SynchronousQueue q = new SynchronousQueue(true); |
290 |
jsr166 |
1.14 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
291 |
|
|
public void realRun() throws InterruptedException { |
292 |
jsr166 |
1.13 |
q.take(); |
293 |
|
|
}}); |
294 |
|
|
|
295 |
|
|
t.start(); |
296 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
297 |
|
|
t.interrupt(); |
298 |
|
|
t.join(); |
299 |
dl |
1.8 |
} |
300 |
|
|
|
301 |
dl |
1.4 |
/** |
302 |
dl |
1.5 |
* poll fails unless active taker |
303 |
dl |
1.4 |
*/ |
304 |
|
|
public void testPoll() { |
305 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
306 |
jsr166 |
1.14 |
assertNull(q.poll()); |
307 |
dl |
1.1 |
} |
308 |
|
|
|
309 |
dl |
1.4 |
/** |
310 |
dl |
1.5 |
* timed pool with zero timeout times out if no active taker |
311 |
dl |
1.4 |
*/ |
312 |
jsr166 |
1.13 |
public void testTimedPoll0() throws InterruptedException { |
313 |
|
|
SynchronousQueue q = new SynchronousQueue(); |
314 |
|
|
assertNull(q.poll(0, MILLISECONDS)); |
315 |
dl |
1.1 |
} |
316 |
|
|
|
317 |
dl |
1.4 |
/** |
318 |
dl |
1.5 |
* timed pool with nonzero timeout times out if no active taker |
319 |
dl |
1.4 |
*/ |
320 |
jsr166 |
1.13 |
public void testTimedPoll() throws InterruptedException { |
321 |
|
|
SynchronousQueue q = new SynchronousQueue(); |
322 |
|
|
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
323 |
dl |
1.1 |
} |
324 |
|
|
|
325 |
dl |
1.4 |
/** |
326 |
dl |
1.5 |
* Interrupted timed poll throws InterruptedException instead of |
327 |
|
|
* returning timeout status |
328 |
dl |
1.4 |
*/ |
329 |
jsr166 |
1.13 |
public void testInterruptedTimedPoll() throws InterruptedException { |
330 |
jsr166 |
1.15 |
final SynchronousQueue q = new SynchronousQueue(); |
331 |
jsr166 |
1.14 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
332 |
|
|
public void realRun() throws InterruptedException { |
333 |
jsr166 |
1.13 |
q.poll(SMALL_DELAY_MS, MILLISECONDS); |
334 |
|
|
}}); |
335 |
|
|
|
336 |
dl |
1.1 |
t.start(); |
337 |
jsr166 |
1.13 |
Thread.sleep(SHORT_DELAY_MS); |
338 |
|
|
t.interrupt(); |
339 |
|
|
t.join(); |
340 |
dl |
1.1 |
} |
341 |
|
|
|
342 |
dl |
1.4 |
/** |
343 |
dl |
1.5 |
* timed poll before a delayed offer fails; after offer succeeds; |
344 |
|
|
* on interruption throws |
345 |
dl |
1.4 |
*/ |
346 |
jsr166 |
1.13 |
public void testTimedPollWithOffer() throws InterruptedException { |
347 |
dl |
1.1 |
final SynchronousQueue q = new SynchronousQueue(); |
348 |
jsr166 |
1.14 |
Thread t = new Thread(new CheckedRunnable() { |
349 |
|
|
public void realRun() throws InterruptedException { |
350 |
jsr166 |
1.16 |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
351 |
jsr166 |
1.13 |
assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
352 |
|
|
try { |
353 |
|
|
q.poll(LONG_DELAY_MS, MILLISECONDS); |
354 |
jsr166 |
1.16 |
shouldThrow(); |
355 |
jsr166 |
1.13 |
} catch (InterruptedException success) {} |
356 |
|
|
}}); |
357 |
|
|
|
358 |
|
|
t.start(); |
359 |
|
|
Thread.sleep(SMALL_DELAY_MS); |
360 |
|
|
assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS)); |
361 |
|
|
t.interrupt(); |
362 |
|
|
t.join(); |
363 |
jsr166 |
1.10 |
} |
364 |
dl |
1.8 |
|
365 |
|
|
/** |
366 |
|
|
* Interrupted timed poll throws InterruptedException instead of |
367 |
|
|
* returning timeout status |
368 |
|
|
*/ |
369 |
jsr166 |
1.13 |
public void testFairInterruptedTimedPoll() throws InterruptedException { |
370 |
jsr166 |
1.14 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
371 |
|
|
public void realRun() throws InterruptedException { |
372 |
jsr166 |
1.13 |
SynchronousQueue q = new SynchronousQueue(true); |
373 |
|
|
q.poll(SMALL_DELAY_MS, MILLISECONDS); |
374 |
|
|
}}); |
375 |
|
|
|
376 |
dl |
1.8 |
t.start(); |
377 |
jsr166 |
1.13 |
Thread.sleep(SHORT_DELAY_MS); |
378 |
|
|
t.interrupt(); |
379 |
|
|
t.join(); |
380 |
dl |
1.8 |
} |
381 |
|
|
|
382 |
|
|
/** |
383 |
|
|
* timed poll before a delayed offer fails; after offer succeeds; |
384 |
|
|
* on interruption throws |
385 |
|
|
*/ |
386 |
jsr166 |
1.13 |
public void testFairTimedPollWithOffer() throws InterruptedException { |
387 |
dl |
1.8 |
final SynchronousQueue q = new SynchronousQueue(true); |
388 |
jsr166 |
1.14 |
Thread t = new Thread(new CheckedRunnable() { |
389 |
|
|
public void realRun() throws InterruptedException { |
390 |
jsr166 |
1.16 |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
391 |
jsr166 |
1.13 |
assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
392 |
|
|
try { |
393 |
|
|
q.poll(LONG_DELAY_MS, MILLISECONDS); |
394 |
|
|
threadShouldThrow(); |
395 |
|
|
} catch (InterruptedException success) {} |
396 |
|
|
}}); |
397 |
|
|
|
398 |
|
|
t.start(); |
399 |
|
|
Thread.sleep(SMALL_DELAY_MS); |
400 |
|
|
assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS)); |
401 |
|
|
t.interrupt(); |
402 |
|
|
t.join(); |
403 |
jsr166 |
1.10 |
} |
404 |
dl |
1.1 |
|
405 |
|
|
|
406 |
dl |
1.4 |
/** |
407 |
dl |
1.5 |
* peek returns null |
408 |
dl |
1.4 |
*/ |
409 |
|
|
public void testPeek() { |
410 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
411 |
jsr166 |
1.14 |
assertNull(q.peek()); |
412 |
dl |
1.1 |
} |
413 |
|
|
|
414 |
dl |
1.4 |
/** |
415 |
dl |
1.5 |
* element throws NSEE |
416 |
dl |
1.4 |
*/ |
417 |
|
|
public void testElement() { |
418 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
419 |
|
|
try { |
420 |
|
|
q.element(); |
421 |
dl |
1.4 |
shouldThrow(); |
422 |
jsr166 |
1.13 |
} catch (NoSuchElementException success) {} |
423 |
dl |
1.1 |
} |
424 |
|
|
|
425 |
dl |
1.4 |
/** |
426 |
dl |
1.5 |
* remove throws NSEE if no active taker |
427 |
dl |
1.4 |
*/ |
428 |
|
|
public void testRemove() { |
429 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
430 |
|
|
try { |
431 |
|
|
q.remove(); |
432 |
dl |
1.4 |
shouldThrow(); |
433 |
jsr166 |
1.16 |
} catch (NoSuchElementException success) {} |
434 |
dl |
1.1 |
} |
435 |
|
|
|
436 |
dl |
1.4 |
/** |
437 |
dl |
1.5 |
* remove(x) returns false |
438 |
dl |
1.4 |
*/ |
439 |
|
|
public void testRemoveElement() { |
440 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
441 |
dl |
1.5 |
assertFalse(q.remove(zero)); |
442 |
dl |
1.2 |
assertTrue(q.isEmpty()); |
443 |
dl |
1.1 |
} |
444 |
jsr166 |
1.10 |
|
445 |
dl |
1.4 |
/** |
446 |
dl |
1.5 |
* contains returns false |
447 |
dl |
1.4 |
*/ |
448 |
|
|
public void testContains() { |
449 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
450 |
dl |
1.5 |
assertFalse(q.contains(zero)); |
451 |
dl |
1.1 |
} |
452 |
|
|
|
453 |
dl |
1.4 |
/** |
454 |
dl |
1.5 |
* clear ensures isEmpty |
455 |
dl |
1.4 |
*/ |
456 |
|
|
public void testClear() { |
457 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
458 |
|
|
q.clear(); |
459 |
|
|
assertTrue(q.isEmpty()); |
460 |
|
|
} |
461 |
|
|
|
462 |
dl |
1.4 |
/** |
463 |
dl |
1.5 |
* containsAll returns false unless empty |
464 |
dl |
1.4 |
*/ |
465 |
|
|
public void testContainsAll() { |
466 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
467 |
|
|
Integer[] empty = new Integer[0]; |
468 |
dl |
1.5 |
assertTrue(q.containsAll(Arrays.asList(empty))); |
469 |
|
|
Integer[] ints = new Integer[1]; ints[0] = zero; |
470 |
dl |
1.1 |
assertFalse(q.containsAll(Arrays.asList(ints))); |
471 |
|
|
} |
472 |
|
|
|
473 |
dl |
1.4 |
/** |
474 |
dl |
1.5 |
* retainAll returns false |
475 |
dl |
1.4 |
*/ |
476 |
|
|
public void testRetainAll() { |
477 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
478 |
|
|
Integer[] empty = new Integer[0]; |
479 |
dl |
1.5 |
assertFalse(q.retainAll(Arrays.asList(empty))); |
480 |
|
|
Integer[] ints = new Integer[1]; ints[0] = zero; |
481 |
|
|
assertFalse(q.retainAll(Arrays.asList(ints))); |
482 |
dl |
1.1 |
} |
483 |
|
|
|
484 |
dl |
1.4 |
/** |
485 |
dl |
1.5 |
* removeAll returns false |
486 |
dl |
1.4 |
*/ |
487 |
|
|
public void testRemoveAll() { |
488 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
489 |
|
|
Integer[] empty = new Integer[0]; |
490 |
dl |
1.5 |
assertFalse(q.removeAll(Arrays.asList(empty))); |
491 |
|
|
Integer[] ints = new Integer[1]; ints[0] = zero; |
492 |
dl |
1.1 |
assertFalse(q.containsAll(Arrays.asList(ints))); |
493 |
|
|
} |
494 |
|
|
|
495 |
|
|
|
496 |
dl |
1.4 |
/** |
497 |
dl |
1.5 |
* toArray is empty |
498 |
dl |
1.4 |
*/ |
499 |
|
|
public void testToArray() { |
500 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
501 |
jsr166 |
1.14 |
Object[] o = q.toArray(); |
502 |
dl |
1.1 |
assertEquals(o.length, 0); |
503 |
|
|
} |
504 |
|
|
|
505 |
dl |
1.4 |
/** |
506 |
dl |
1.5 |
* toArray(a) is nulled at position 0 |
507 |
dl |
1.4 |
*/ |
508 |
|
|
public void testToArray2() { |
509 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
510 |
jsr166 |
1.14 |
Integer[] ints = new Integer[1]; |
511 |
dl |
1.1 |
assertNull(ints[0]); |
512 |
|
|
} |
513 |
jsr166 |
1.10 |
|
514 |
dl |
1.4 |
/** |
515 |
dl |
1.6 |
* toArray(null) throws NPE |
516 |
|
|
*/ |
517 |
|
|
public void testToArray_BadArg() { |
518 |
jsr166 |
1.18 |
SynchronousQueue q = new SynchronousQueue(); |
519 |
jsr166 |
1.14 |
try { |
520 |
|
|
Object o[] = q.toArray(null); |
521 |
|
|
shouldThrow(); |
522 |
|
|
} catch (NullPointerException success) {} |
523 |
dl |
1.6 |
} |
524 |
|
|
|
525 |
|
|
|
526 |
|
|
/** |
527 |
dl |
1.5 |
* iterator does not traverse any elements |
528 |
dl |
1.4 |
*/ |
529 |
|
|
public void testIterator() { |
530 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
531 |
jsr166 |
1.14 |
Iterator it = q.iterator(); |
532 |
dl |
1.1 |
assertFalse(it.hasNext()); |
533 |
|
|
try { |
534 |
|
|
Object x = it.next(); |
535 |
dl |
1.4 |
shouldThrow(); |
536 |
jsr166 |
1.13 |
} catch (NoSuchElementException success) {} |
537 |
dl |
1.1 |
} |
538 |
|
|
|
539 |
dl |
1.4 |
/** |
540 |
dl |
1.5 |
* iterator remove throws ISE |
541 |
dl |
1.4 |
*/ |
542 |
|
|
public void testIteratorRemove() { |
543 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
544 |
jsr166 |
1.14 |
Iterator it = q.iterator(); |
545 |
dl |
1.1 |
try { |
546 |
|
|
it.remove(); |
547 |
dl |
1.4 |
shouldThrow(); |
548 |
jsr166 |
1.13 |
} catch (IllegalStateException success) {} |
549 |
dl |
1.1 |
} |
550 |
|
|
|
551 |
dl |
1.4 |
/** |
552 |
dl |
1.5 |
* toString returns a non-null string |
553 |
dl |
1.4 |
*/ |
554 |
|
|
public void testToString() { |
555 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
556 |
|
|
String s = q.toString(); |
557 |
dl |
1.5 |
assertNotNull(s); |
558 |
jsr166 |
1.10 |
} |
559 |
dl |
1.1 |
|
560 |
|
|
|
561 |
dl |
1.4 |
/** |
562 |
dl |
1.5 |
* offer transfers elements across Executor tasks |
563 |
dl |
1.4 |
*/ |
564 |
dl |
1.1 |
public void testOfferInExecutor() { |
565 |
|
|
final SynchronousQueue q = new SynchronousQueue(); |
566 |
|
|
ExecutorService executor = Executors.newFixedThreadPool(2); |
567 |
|
|
|
568 |
jsr166 |
1.13 |
executor.execute(new CheckedRunnable() { |
569 |
jsr166 |
1.14 |
public void realRun() throws InterruptedException { |
570 |
jsr166 |
1.19 |
assertFalse(q.offer(one)); |
571 |
|
|
assertTrue(q.offer(one, MEDIUM_DELAY_MS, MILLISECONDS)); |
572 |
|
|
assertEquals(0, q.remainingCapacity()); |
573 |
jsr166 |
1.13 |
}}); |
574 |
|
|
|
575 |
|
|
executor.execute(new CheckedRunnable() { |
576 |
jsr166 |
1.14 |
public void realRun() throws InterruptedException { |
577 |
jsr166 |
1.13 |
Thread.sleep(SMALL_DELAY_MS); |
578 |
jsr166 |
1.19 |
assertSame(one, q.take()); |
579 |
jsr166 |
1.13 |
}}); |
580 |
jsr166 |
1.10 |
|
581 |
dl |
1.3 |
joinPool(executor); |
582 |
dl |
1.1 |
} |
583 |
|
|
|
584 |
dl |
1.4 |
/** |
585 |
dl |
1.5 |
* poll retrieves elements across Executor threads |
586 |
dl |
1.4 |
*/ |
587 |
dl |
1.1 |
public void testPollInExecutor() { |
588 |
|
|
final SynchronousQueue q = new SynchronousQueue(); |
589 |
|
|
ExecutorService executor = Executors.newFixedThreadPool(2); |
590 |
jsr166 |
1.13 |
executor.execute(new CheckedRunnable() { |
591 |
jsr166 |
1.14 |
public void realRun() throws InterruptedException { |
592 |
jsr166 |
1.19 |
assertNull(q.poll()); |
593 |
|
|
assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS)); |
594 |
|
|
assertTrue(q.isEmpty()); |
595 |
jsr166 |
1.13 |
}}); |
596 |
|
|
|
597 |
|
|
executor.execute(new CheckedRunnable() { |
598 |
jsr166 |
1.14 |
public void realRun() throws InterruptedException { |
599 |
jsr166 |
1.19 |
Thread.sleep(SHORT_DELAY_MS); |
600 |
|
|
q.put(one); |
601 |
jsr166 |
1.13 |
}}); |
602 |
jsr166 |
1.10 |
|
603 |
dl |
1.3 |
joinPool(executor); |
604 |
dl |
1.2 |
} |
605 |
|
|
|
606 |
dl |
1.4 |
/** |
607 |
dl |
1.5 |
* a deserialized serialized queue is usable |
608 |
dl |
1.4 |
*/ |
609 |
jsr166 |
1.13 |
public void testSerialization() throws Exception { |
610 |
dl |
1.2 |
SynchronousQueue q = new SynchronousQueue(); |
611 |
jsr166 |
1.13 |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
612 |
|
|
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
613 |
|
|
out.writeObject(q); |
614 |
|
|
out.close(); |
615 |
|
|
|
616 |
|
|
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
617 |
|
|
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
618 |
|
|
SynchronousQueue r = (SynchronousQueue)in.readObject(); |
619 |
|
|
assertEquals(q.size(), r.size()); |
620 |
|
|
while (!q.isEmpty()) |
621 |
|
|
assertEquals(q.remove(), r.remove()); |
622 |
dl |
1.1 |
} |
623 |
dl |
1.6 |
|
624 |
|
|
/** |
625 |
|
|
* drainTo(null) throws NPE |
626 |
jsr166 |
1.10 |
*/ |
627 |
dl |
1.6 |
public void testDrainToNull() { |
628 |
|
|
SynchronousQueue q = new SynchronousQueue(); |
629 |
|
|
try { |
630 |
|
|
q.drainTo(null); |
631 |
|
|
shouldThrow(); |
632 |
jsr166 |
1.13 |
} catch (NullPointerException success) {} |
633 |
dl |
1.6 |
} |
634 |
|
|
|
635 |
|
|
/** |
636 |
|
|
* drainTo(this) throws IAE |
637 |
jsr166 |
1.10 |
*/ |
638 |
dl |
1.6 |
public void testDrainToSelf() { |
639 |
|
|
SynchronousQueue q = new SynchronousQueue(); |
640 |
|
|
try { |
641 |
|
|
q.drainTo(q); |
642 |
|
|
shouldThrow(); |
643 |
jsr166 |
1.13 |
} catch (IllegalArgumentException success) {} |
644 |
dl |
1.6 |
} |
645 |
|
|
|
646 |
|
|
/** |
647 |
|
|
* drainTo(c) of empty queue doesn't transfer elements |
648 |
jsr166 |
1.10 |
*/ |
649 |
dl |
1.6 |
public void testDrainTo() { |
650 |
|
|
SynchronousQueue q = new SynchronousQueue(); |
651 |
|
|
ArrayList l = new ArrayList(); |
652 |
|
|
q.drainTo(l); |
653 |
|
|
assertEquals(q.size(), 0); |
654 |
|
|
assertEquals(l.size(), 0); |
655 |
|
|
} |
656 |
|
|
|
657 |
|
|
/** |
658 |
|
|
* drainTo empties queue, unblocking a waiting put. |
659 |
jsr166 |
1.10 |
*/ |
660 |
jsr166 |
1.13 |
public void testDrainToWithActivePut() throws InterruptedException { |
661 |
dl |
1.6 |
final SynchronousQueue q = new SynchronousQueue(); |
662 |
jsr166 |
1.14 |
Thread t = new Thread(new CheckedRunnable() { |
663 |
|
|
public void realRun() throws InterruptedException { |
664 |
jsr166 |
1.13 |
q.put(new Integer(1)); |
665 |
|
|
}}); |
666 |
|
|
|
667 |
|
|
t.start(); |
668 |
|
|
ArrayList l = new ArrayList(); |
669 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
670 |
|
|
q.drainTo(l); |
671 |
|
|
assertTrue(l.size() <= 1); |
672 |
|
|
if (l.size() > 0) |
673 |
|
|
assertEquals(l.get(0), new Integer(1)); |
674 |
|
|
t.join(); |
675 |
|
|
assertTrue(l.size() <= 1); |
676 |
dl |
1.6 |
} |
677 |
|
|
|
678 |
|
|
/** |
679 |
|
|
* drainTo(null, n) throws NPE |
680 |
jsr166 |
1.10 |
*/ |
681 |
dl |
1.6 |
public void testDrainToNullN() { |
682 |
|
|
SynchronousQueue q = new SynchronousQueue(); |
683 |
|
|
try { |
684 |
|
|
q.drainTo(null, 0); |
685 |
|
|
shouldThrow(); |
686 |
jsr166 |
1.13 |
} catch (NullPointerException success) {} |
687 |
dl |
1.6 |
} |
688 |
|
|
|
689 |
|
|
/** |
690 |
|
|
* drainTo(this, n) throws IAE |
691 |
jsr166 |
1.10 |
*/ |
692 |
dl |
1.6 |
public void testDrainToSelfN() { |
693 |
|
|
SynchronousQueue q = new SynchronousQueue(); |
694 |
|
|
try { |
695 |
|
|
q.drainTo(q, 0); |
696 |
|
|
shouldThrow(); |
697 |
jsr166 |
1.16 |
} catch (IllegalArgumentException success) {} |
698 |
dl |
1.6 |
} |
699 |
|
|
|
700 |
|
|
/** |
701 |
|
|
* drainTo(c, n) empties up to n elements of queue into c |
702 |
jsr166 |
1.10 |
*/ |
703 |
jsr166 |
1.13 |
public void testDrainToN() throws InterruptedException { |
704 |
dl |
1.6 |
final SynchronousQueue q = new SynchronousQueue(); |
705 |
jsr166 |
1.14 |
Thread t1 = new Thread(new CheckedRunnable() { |
706 |
|
|
public void realRun() throws InterruptedException { |
707 |
jsr166 |
1.13 |
q.put(one); |
708 |
|
|
}}); |
709 |
|
|
|
710 |
jsr166 |
1.14 |
Thread t2 = new Thread(new CheckedRunnable() { |
711 |
|
|
public void realRun() throws InterruptedException { |
712 |
jsr166 |
1.13 |
q.put(two); |
713 |
|
|
}}); |
714 |
dl |
1.6 |
|
715 |
jsr166 |
1.13 |
t1.start(); |
716 |
|
|
t2.start(); |
717 |
|
|
ArrayList l = new ArrayList(); |
718 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
719 |
|
|
q.drainTo(l, 1); |
720 |
jsr166 |
1.23 |
assertEquals(1, l.size()); |
721 |
jsr166 |
1.13 |
q.drainTo(l, 1); |
722 |
jsr166 |
1.23 |
assertEquals(2, l.size()); |
723 |
jsr166 |
1.13 |
assertTrue(l.contains(one)); |
724 |
|
|
assertTrue(l.contains(two)); |
725 |
|
|
t1.join(); |
726 |
|
|
t2.join(); |
727 |
dl |
1.6 |
} |
728 |
|
|
|
729 |
dl |
1.1 |
} |