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 |
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* 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 |
dl |
1.2 |
import java.io.*; |
13 |
dl |
1.1 |
|
14 |
dl |
1.3 |
public class SynchronousQueueTest extends JSR166TestCase { |
15 |
dl |
1.1 |
|
16 |
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public static void main(String[] args) { |
17 |
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junit.textui.TestRunner.run (suite()); |
18 |
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} |
19 |
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20 |
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public static Test suite() { |
21 |
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return new TestSuite(SynchronousQueueTest.class); |
22 |
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} |
23 |
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|
24 |
dl |
1.4 |
/** |
25 |
dl |
1.5 |
* A SynchronousQueue is both empty and full |
26 |
dl |
1.4 |
*/ |
27 |
dl |
1.1 |
public void testEmptyFull() { |
28 |
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SynchronousQueue q = new SynchronousQueue(); |
29 |
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assertTrue(q.isEmpty()); |
30 |
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assertEquals(0, q.size()); |
31 |
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assertEquals(0, q.remainingCapacity()); |
32 |
dl |
1.5 |
assertFalse(q.offer(zero)); |
33 |
dl |
1.1 |
} |
34 |
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|
35 |
dl |
1.4 |
/** |
36 |
dl |
1.8 |
* A fair SynchronousQueue is both empty and full |
37 |
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*/ |
38 |
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public void testFairEmptyFull() { |
39 |
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SynchronousQueue q = new SynchronousQueue(true); |
40 |
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assertTrue(q.isEmpty()); |
41 |
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assertEquals(0, q.size()); |
42 |
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assertEquals(0, q.remainingCapacity()); |
43 |
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assertFalse(q.offer(zero)); |
44 |
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} |
45 |
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46 |
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/** |
47 |
dl |
1.5 |
* offer(null) throws NPE |
48 |
dl |
1.4 |
*/ |
49 |
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public void testOfferNull() { |
50 |
dl |
1.1 |
try { |
51 |
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SynchronousQueue q = new SynchronousQueue(); |
52 |
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q.offer(null); |
53 |
dl |
1.4 |
shouldThrow(); |
54 |
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1.1 |
} catch (NullPointerException success) { } |
55 |
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} |
56 |
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57 |
dl |
1.4 |
/** |
58 |
dl |
1.6 |
* add(null) throws NPE |
59 |
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*/ |
60 |
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public void testAddNull() { |
61 |
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try { |
62 |
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SynchronousQueue q = new SynchronousQueue(); |
63 |
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q.add(null); |
64 |
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shouldThrow(); |
65 |
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} catch (NullPointerException success) { } |
66 |
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} |
67 |
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68 |
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/** |
69 |
dl |
1.5 |
* offer fails if no active taker |
70 |
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1.4 |
*/ |
71 |
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public void testOffer() { |
72 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
73 |
dl |
1.5 |
assertFalse(q.offer(one)); |
74 |
dl |
1.1 |
} |
75 |
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|
76 |
dl |
1.4 |
/** |
77 |
dl |
1.5 |
* add throws ISE if no active taker |
78 |
dl |
1.4 |
*/ |
79 |
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public void testAdd() { |
80 |
dl |
1.1 |
try { |
81 |
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SynchronousQueue q = new SynchronousQueue(); |
82 |
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assertEquals(0, q.remainingCapacity()); |
83 |
dl |
1.5 |
q.add(one); |
84 |
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shouldThrow(); |
85 |
dl |
1.1 |
} catch (IllegalStateException success){ |
86 |
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} |
87 |
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} |
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 |
dl |
1.1 |
} |
98 |
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catch (NullPointerException success) {} |
99 |
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} |
100 |
dl |
1.6 |
|
101 |
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/** |
102 |
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* addAll(this) throws IAE |
103 |
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*/ |
104 |
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public void testAddAllSelf() { |
105 |
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try { |
106 |
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SynchronousQueue q = new SynchronousQueue(); |
107 |
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q.addAll(q); |
108 |
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shouldThrow(); |
109 |
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} |
110 |
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catch (IllegalArgumentException success) {} |
111 |
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} |
112 |
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|
113 |
dl |
1.4 |
/** |
114 |
dl |
1.5 |
* addAll of a collection with null elements throws NPE |
115 |
dl |
1.4 |
*/ |
116 |
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public void testAddAll2() { |
117 |
dl |
1.1 |
try { |
118 |
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SynchronousQueue q = new SynchronousQueue(); |
119 |
dl |
1.3 |
Integer[] ints = new Integer[1]; |
120 |
dl |
1.1 |
q.addAll(Arrays.asList(ints)); |
121 |
dl |
1.4 |
shouldThrow(); |
122 |
dl |
1.1 |
} |
123 |
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catch (NullPointerException success) {} |
124 |
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} |
125 |
dl |
1.4 |
/** |
126 |
dl |
1.5 |
* addAll throws ISE if no active taker |
127 |
dl |
1.4 |
*/ |
128 |
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public void testAddAll4() { |
129 |
dl |
1.1 |
try { |
130 |
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SynchronousQueue q = new SynchronousQueue(); |
131 |
dl |
1.3 |
Integer[] ints = new Integer[1]; |
132 |
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for (int i = 0; i < 1; ++i) |
133 |
dl |
1.1 |
ints[i] = new Integer(i); |
134 |
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q.addAll(Arrays.asList(ints)); |
135 |
dl |
1.4 |
shouldThrow(); |
136 |
dl |
1.1 |
} |
137 |
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catch (IllegalStateException success) {} |
138 |
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} |
139 |
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|
140 |
dl |
1.4 |
/** |
141 |
dl |
1.5 |
* put(null) throws NPE |
142 |
dl |
1.4 |
*/ |
143 |
dl |
1.1 |
public void testPutNull() { |
144 |
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try { |
145 |
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SynchronousQueue q = new SynchronousQueue(); |
146 |
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q.put(null); |
147 |
dl |
1.4 |
shouldThrow(); |
148 |
dl |
1.1 |
} |
149 |
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catch (NullPointerException success){ |
150 |
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} |
151 |
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catch (InterruptedException ie) { |
152 |
dl |
1.4 |
unexpectedException(); |
153 |
dl |
1.1 |
} |
154 |
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} |
155 |
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|
156 |
dl |
1.4 |
/** |
157 |
dl |
1.5 |
* put blocks interruptibly if no active taker |
158 |
dl |
1.4 |
*/ |
159 |
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public void testBlockingPut() { |
160 |
dl |
1.1 |
Thread t = new Thread(new Runnable() { |
161 |
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public void run() { |
162 |
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try { |
163 |
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SynchronousQueue q = new SynchronousQueue(); |
164 |
dl |
1.5 |
q.put(zero); |
165 |
dl |
1.4 |
threadShouldThrow(); |
166 |
dl |
1.1 |
} catch (InterruptedException ie){ |
167 |
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} |
168 |
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}}); |
169 |
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t.start(); |
170 |
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try { |
171 |
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Thread.sleep(SHORT_DELAY_MS); |
172 |
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t.interrupt(); |
173 |
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t.join(); |
174 |
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} |
175 |
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catch (InterruptedException ie) { |
176 |
dl |
1.4 |
unexpectedException(); |
177 |
dl |
1.1 |
} |
178 |
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} |
179 |
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|
180 |
dl |
1.4 |
/** |
181 |
dl |
1.5 |
* put blocks waiting for take |
182 |
dl |
1.4 |
*/ |
183 |
dl |
1.1 |
public void testPutWithTake() { |
184 |
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final SynchronousQueue q = new SynchronousQueue(); |
185 |
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Thread t = new Thread(new Runnable() { |
186 |
dl |
1.4 |
public void run() { |
187 |
dl |
1.1 |
int added = 0; |
188 |
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try { |
189 |
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q.put(new Object()); |
190 |
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++added; |
191 |
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q.put(new Object()); |
192 |
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++added; |
193 |
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q.put(new Object()); |
194 |
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++added; |
195 |
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q.put(new Object()); |
196 |
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++added; |
197 |
dl |
1.4 |
threadShouldThrow(); |
198 |
dl |
1.1 |
} catch (InterruptedException e){ |
199 |
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assertTrue(added >= 1); |
200 |
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} |
201 |
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} |
202 |
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}); |
203 |
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try { |
204 |
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t.start(); |
205 |
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Thread.sleep(SHORT_DELAY_MS); |
206 |
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q.take(); |
207 |
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Thread.sleep(SHORT_DELAY_MS); |
208 |
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t.interrupt(); |
209 |
|
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t.join(); |
210 |
|
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} catch (Exception e){ |
211 |
dl |
1.4 |
unexpectedException(); |
212 |
dl |
1.1 |
} |
213 |
|
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} |
214 |
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|
215 |
dl |
1.4 |
/** |
216 |
dl |
1.5 |
* timed offer times out if elements not taken |
217 |
dl |
1.4 |
*/ |
218 |
dl |
1.1 |
public void testTimedOffer() { |
219 |
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final SynchronousQueue q = new SynchronousQueue(); |
220 |
|
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Thread t = new Thread(new Runnable() { |
221 |
dl |
1.4 |
public void run() { |
222 |
dl |
1.1 |
try { |
223 |
|
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|
224 |
dl |
1.3 |
threadAssertFalse(q.offer(new Object(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
225 |
dl |
1.1 |
q.offer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
226 |
dl |
1.4 |
threadShouldThrow(); |
227 |
dl |
1.1 |
} catch (InterruptedException success){} |
228 |
|
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} |
229 |
|
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}); |
230 |
|
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|
231 |
|
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try { |
232 |
|
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t.start(); |
233 |
dl |
1.3 |
Thread.sleep(SMALL_DELAY_MS); |
234 |
dl |
1.1 |
t.interrupt(); |
235 |
|
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t.join(); |
236 |
|
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} catch (Exception e){ |
237 |
dl |
1.4 |
unexpectedException(); |
238 |
dl |
1.1 |
} |
239 |
|
|
} |
240 |
|
|
|
241 |
|
|
|
242 |
dl |
1.4 |
/** |
243 |
dl |
1.5 |
* take blocks interruptibly when empty |
244 |
dl |
1.4 |
*/ |
245 |
dl |
1.1 |
public void testTakeFromEmpty() { |
246 |
|
|
final SynchronousQueue q = new SynchronousQueue(); |
247 |
|
|
Thread t = new Thread(new Runnable() { |
248 |
dl |
1.4 |
public void run() { |
249 |
dl |
1.1 |
try { |
250 |
|
|
q.take(); |
251 |
dl |
1.4 |
threadShouldThrow(); |
252 |
dl |
1.1 |
} catch (InterruptedException success){ } |
253 |
|
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} |
254 |
|
|
}); |
255 |
|
|
try { |
256 |
|
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t.start(); |
257 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
258 |
|
|
t.interrupt(); |
259 |
|
|
t.join(); |
260 |
|
|
} catch (Exception e){ |
261 |
dl |
1.4 |
unexpectedException(); |
262 |
dl |
1.1 |
} |
263 |
|
|
} |
264 |
|
|
|
265 |
dl |
1.8 |
|
266 |
|
|
/** |
267 |
|
|
* put blocks interruptibly if no active taker |
268 |
|
|
*/ |
269 |
|
|
public void testFairBlockingPut() { |
270 |
|
|
Thread t = new Thread(new Runnable() { |
271 |
|
|
public void run() { |
272 |
|
|
try { |
273 |
|
|
SynchronousQueue q = new SynchronousQueue(true); |
274 |
|
|
q.put(zero); |
275 |
|
|
threadShouldThrow(); |
276 |
|
|
} catch (InterruptedException ie){ |
277 |
|
|
} |
278 |
|
|
}}); |
279 |
|
|
t.start(); |
280 |
|
|
try { |
281 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
282 |
|
|
t.interrupt(); |
283 |
|
|
t.join(); |
284 |
|
|
} |
285 |
|
|
catch (InterruptedException ie) { |
286 |
|
|
unexpectedException(); |
287 |
|
|
} |
288 |
|
|
} |
289 |
|
|
|
290 |
|
|
/** |
291 |
|
|
* put blocks waiting for take |
292 |
|
|
*/ |
293 |
|
|
public void testFairPutWithTake() { |
294 |
|
|
final SynchronousQueue q = new SynchronousQueue(true); |
295 |
|
|
Thread t = new Thread(new Runnable() { |
296 |
|
|
public void run() { |
297 |
|
|
int added = 0; |
298 |
|
|
try { |
299 |
|
|
q.put(new Object()); |
300 |
|
|
++added; |
301 |
|
|
q.put(new Object()); |
302 |
|
|
++added; |
303 |
|
|
q.put(new Object()); |
304 |
|
|
++added; |
305 |
|
|
q.put(new Object()); |
306 |
|
|
++added; |
307 |
|
|
threadShouldThrow(); |
308 |
|
|
} catch (InterruptedException e){ |
309 |
|
|
assertTrue(added >= 1); |
310 |
|
|
} |
311 |
|
|
} |
312 |
|
|
}); |
313 |
|
|
try { |
314 |
|
|
t.start(); |
315 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
316 |
|
|
q.take(); |
317 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
318 |
|
|
t.interrupt(); |
319 |
|
|
t.join(); |
320 |
|
|
} catch (Exception e){ |
321 |
|
|
unexpectedException(); |
322 |
|
|
} |
323 |
|
|
} |
324 |
|
|
|
325 |
|
|
/** |
326 |
|
|
* timed offer times out if elements not taken |
327 |
|
|
*/ |
328 |
|
|
public void testFairTimedOffer() { |
329 |
|
|
final SynchronousQueue q = new SynchronousQueue(true); |
330 |
|
|
Thread t = new Thread(new Runnable() { |
331 |
|
|
public void run() { |
332 |
|
|
try { |
333 |
|
|
|
334 |
|
|
threadAssertFalse(q.offer(new Object(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
335 |
|
|
q.offer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
336 |
|
|
threadShouldThrow(); |
337 |
|
|
} catch (InterruptedException success){} |
338 |
|
|
} |
339 |
|
|
}); |
340 |
|
|
|
341 |
|
|
try { |
342 |
|
|
t.start(); |
343 |
|
|
Thread.sleep(SMALL_DELAY_MS); |
344 |
|
|
t.interrupt(); |
345 |
|
|
t.join(); |
346 |
|
|
} catch (Exception e){ |
347 |
|
|
unexpectedException(); |
348 |
|
|
} |
349 |
|
|
} |
350 |
|
|
|
351 |
|
|
|
352 |
|
|
/** |
353 |
|
|
* take blocks interruptibly when empty |
354 |
|
|
*/ |
355 |
|
|
public void testFairTakeFromEmpty() { |
356 |
|
|
final SynchronousQueue q = new SynchronousQueue(true); |
357 |
|
|
Thread t = new Thread(new Runnable() { |
358 |
|
|
public void run() { |
359 |
|
|
try { |
360 |
|
|
q.take(); |
361 |
|
|
threadShouldThrow(); |
362 |
|
|
} catch (InterruptedException success){ } |
363 |
|
|
} |
364 |
|
|
}); |
365 |
|
|
try { |
366 |
|
|
t.start(); |
367 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
368 |
|
|
t.interrupt(); |
369 |
|
|
t.join(); |
370 |
|
|
} catch (Exception e){ |
371 |
|
|
unexpectedException(); |
372 |
|
|
} |
373 |
|
|
} |
374 |
|
|
|
375 |
dl |
1.4 |
/** |
376 |
dl |
1.5 |
* poll fails unless active taker |
377 |
dl |
1.4 |
*/ |
378 |
|
|
public void testPoll() { |
379 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
380 |
|
|
assertNull(q.poll()); |
381 |
|
|
} |
382 |
|
|
|
383 |
dl |
1.4 |
/** |
384 |
dl |
1.5 |
* timed pool with zero timeout times out if no active taker |
385 |
dl |
1.4 |
*/ |
386 |
dl |
1.1 |
public void testTimedPoll0() { |
387 |
|
|
try { |
388 |
|
|
SynchronousQueue q = new SynchronousQueue(); |
389 |
|
|
assertNull(q.poll(0, TimeUnit.MILLISECONDS)); |
390 |
|
|
} catch (InterruptedException e){ |
391 |
dl |
1.4 |
unexpectedException(); |
392 |
dl |
1.1 |
} |
393 |
|
|
} |
394 |
|
|
|
395 |
dl |
1.4 |
/** |
396 |
dl |
1.5 |
* timed pool with nonzero timeout times out if no active taker |
397 |
dl |
1.4 |
*/ |
398 |
dl |
1.1 |
public void testTimedPoll() { |
399 |
|
|
try { |
400 |
|
|
SynchronousQueue q = new SynchronousQueue(); |
401 |
|
|
assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
402 |
|
|
} catch (InterruptedException e){ |
403 |
dl |
1.4 |
unexpectedException(); |
404 |
dl |
1.1 |
} |
405 |
|
|
} |
406 |
|
|
|
407 |
dl |
1.4 |
/** |
408 |
dl |
1.5 |
* Interrupted timed poll throws InterruptedException instead of |
409 |
|
|
* returning timeout status |
410 |
dl |
1.4 |
*/ |
411 |
|
|
public void testInterruptedTimedPoll() { |
412 |
dl |
1.1 |
Thread t = new Thread(new Runnable() { |
413 |
|
|
public void run() { |
414 |
|
|
try { |
415 |
|
|
SynchronousQueue q = new SynchronousQueue(); |
416 |
|
|
assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
417 |
|
|
} catch (InterruptedException success){ |
418 |
|
|
} |
419 |
|
|
}}); |
420 |
|
|
t.start(); |
421 |
|
|
try { |
422 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
423 |
|
|
t.interrupt(); |
424 |
|
|
t.join(); |
425 |
|
|
} |
426 |
|
|
catch (InterruptedException ie) { |
427 |
dl |
1.4 |
unexpectedException(); |
428 |
dl |
1.1 |
} |
429 |
|
|
} |
430 |
|
|
|
431 |
dl |
1.4 |
/** |
432 |
dl |
1.5 |
* timed poll before a delayed offer fails; after offer succeeds; |
433 |
|
|
* on interruption throws |
434 |
dl |
1.4 |
*/ |
435 |
|
|
public void testTimedPollWithOffer() { |
436 |
dl |
1.1 |
final SynchronousQueue q = new SynchronousQueue(); |
437 |
dl |
1.8 |
Thread t = new Thread(new Runnable() { |
438 |
|
|
public void run() { |
439 |
|
|
try { |
440 |
|
|
threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
441 |
|
|
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
442 |
|
|
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
443 |
|
|
threadShouldThrow(); |
444 |
|
|
} catch (InterruptedException success) { } |
445 |
|
|
} |
446 |
|
|
}); |
447 |
|
|
try { |
448 |
|
|
t.start(); |
449 |
|
|
Thread.sleep(SMALL_DELAY_MS); |
450 |
|
|
assertTrue(q.offer(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
451 |
|
|
t.interrupt(); |
452 |
|
|
t.join(); |
453 |
|
|
} catch (Exception e){ |
454 |
|
|
unexpectedException(); |
455 |
|
|
} |
456 |
|
|
} |
457 |
|
|
|
458 |
|
|
/** |
459 |
|
|
* Interrupted timed poll throws InterruptedException instead of |
460 |
|
|
* returning timeout status |
461 |
|
|
*/ |
462 |
|
|
public void testFairInterruptedTimedPoll() { |
463 |
|
|
Thread t = new Thread(new Runnable() { |
464 |
|
|
public void run() { |
465 |
|
|
try { |
466 |
|
|
SynchronousQueue q = new SynchronousQueue(true); |
467 |
|
|
assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
468 |
|
|
} catch (InterruptedException success){ |
469 |
|
|
} |
470 |
|
|
}}); |
471 |
|
|
t.start(); |
472 |
|
|
try { |
473 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
474 |
|
|
t.interrupt(); |
475 |
|
|
t.join(); |
476 |
|
|
} |
477 |
|
|
catch (InterruptedException ie) { |
478 |
|
|
unexpectedException(); |
479 |
|
|
} |
480 |
|
|
} |
481 |
|
|
|
482 |
|
|
/** |
483 |
|
|
* timed poll before a delayed offer fails; after offer succeeds; |
484 |
|
|
* on interruption throws |
485 |
|
|
*/ |
486 |
|
|
public void testFairTimedPollWithOffer() { |
487 |
|
|
final SynchronousQueue q = new SynchronousQueue(true); |
488 |
dl |
1.1 |
Thread t = new Thread(new Runnable() { |
489 |
dl |
1.4 |
public void run() { |
490 |
dl |
1.1 |
try { |
491 |
dl |
1.3 |
threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
492 |
dl |
1.1 |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
493 |
|
|
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
494 |
dl |
1.4 |
threadShouldThrow(); |
495 |
dl |
1.1 |
} catch (InterruptedException success) { } |
496 |
|
|
} |
497 |
|
|
}); |
498 |
|
|
try { |
499 |
|
|
t.start(); |
500 |
dl |
1.3 |
Thread.sleep(SMALL_DELAY_MS); |
501 |
dl |
1.5 |
assertTrue(q.offer(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
502 |
dl |
1.1 |
t.interrupt(); |
503 |
|
|
t.join(); |
504 |
|
|
} catch (Exception e){ |
505 |
dl |
1.4 |
unexpectedException(); |
506 |
dl |
1.1 |
} |
507 |
|
|
} |
508 |
|
|
|
509 |
|
|
|
510 |
dl |
1.4 |
/** |
511 |
dl |
1.5 |
* peek returns null |
512 |
dl |
1.4 |
*/ |
513 |
|
|
public void testPeek() { |
514 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
515 |
|
|
assertNull(q.peek()); |
516 |
|
|
} |
517 |
|
|
|
518 |
dl |
1.4 |
/** |
519 |
dl |
1.5 |
* element throws NSEE |
520 |
dl |
1.4 |
*/ |
521 |
|
|
public void testElement() { |
522 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
523 |
|
|
try { |
524 |
|
|
q.element(); |
525 |
dl |
1.4 |
shouldThrow(); |
526 |
dl |
1.1 |
} |
527 |
|
|
catch (NoSuchElementException success) {} |
528 |
|
|
} |
529 |
|
|
|
530 |
dl |
1.4 |
/** |
531 |
dl |
1.5 |
* remove throws NSEE if no active taker |
532 |
dl |
1.4 |
*/ |
533 |
|
|
public void testRemove() { |
534 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
535 |
|
|
try { |
536 |
|
|
q.remove(); |
537 |
dl |
1.4 |
shouldThrow(); |
538 |
dl |
1.1 |
} catch (NoSuchElementException success){ |
539 |
|
|
} |
540 |
|
|
} |
541 |
|
|
|
542 |
dl |
1.4 |
/** |
543 |
dl |
1.5 |
* remove(x) returns false |
544 |
dl |
1.4 |
*/ |
545 |
|
|
public void testRemoveElement() { |
546 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
547 |
dl |
1.5 |
assertFalse(q.remove(zero)); |
548 |
dl |
1.2 |
assertTrue(q.isEmpty()); |
549 |
dl |
1.1 |
} |
550 |
|
|
|
551 |
dl |
1.4 |
/** |
552 |
dl |
1.5 |
* contains returns false |
553 |
dl |
1.4 |
*/ |
554 |
|
|
public void testContains() { |
555 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
556 |
dl |
1.5 |
assertFalse(q.contains(zero)); |
557 |
dl |
1.1 |
} |
558 |
|
|
|
559 |
dl |
1.4 |
/** |
560 |
dl |
1.5 |
* clear ensures isEmpty |
561 |
dl |
1.4 |
*/ |
562 |
|
|
public void testClear() { |
563 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
564 |
|
|
q.clear(); |
565 |
|
|
assertTrue(q.isEmpty()); |
566 |
|
|
} |
567 |
|
|
|
568 |
dl |
1.4 |
/** |
569 |
dl |
1.5 |
* containsAll returns false unless empty |
570 |
dl |
1.4 |
*/ |
571 |
|
|
public void testContainsAll() { |
572 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
573 |
|
|
Integer[] empty = new Integer[0]; |
574 |
dl |
1.5 |
assertTrue(q.containsAll(Arrays.asList(empty))); |
575 |
|
|
Integer[] ints = new Integer[1]; ints[0] = zero; |
576 |
dl |
1.1 |
assertFalse(q.containsAll(Arrays.asList(ints))); |
577 |
|
|
} |
578 |
|
|
|
579 |
dl |
1.4 |
/** |
580 |
dl |
1.5 |
* retainAll returns false |
581 |
dl |
1.4 |
*/ |
582 |
|
|
public void testRetainAll() { |
583 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
584 |
|
|
Integer[] empty = new Integer[0]; |
585 |
dl |
1.5 |
assertFalse(q.retainAll(Arrays.asList(empty))); |
586 |
|
|
Integer[] ints = new Integer[1]; ints[0] = zero; |
587 |
|
|
assertFalse(q.retainAll(Arrays.asList(ints))); |
588 |
dl |
1.1 |
} |
589 |
|
|
|
590 |
dl |
1.4 |
/** |
591 |
dl |
1.5 |
* removeAll returns false |
592 |
dl |
1.4 |
*/ |
593 |
|
|
public void testRemoveAll() { |
594 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
595 |
|
|
Integer[] empty = new Integer[0]; |
596 |
dl |
1.5 |
assertFalse(q.removeAll(Arrays.asList(empty))); |
597 |
|
|
Integer[] ints = new Integer[1]; ints[0] = zero; |
598 |
dl |
1.1 |
assertFalse(q.containsAll(Arrays.asList(ints))); |
599 |
|
|
} |
600 |
|
|
|
601 |
|
|
|
602 |
dl |
1.4 |
/** |
603 |
dl |
1.5 |
* toArray is empty |
604 |
dl |
1.4 |
*/ |
605 |
|
|
public void testToArray() { |
606 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
607 |
|
|
Object[] o = q.toArray(); |
608 |
|
|
assertEquals(o.length, 0); |
609 |
|
|
} |
610 |
|
|
|
611 |
dl |
1.4 |
/** |
612 |
dl |
1.5 |
* toArray(a) is nulled at position 0 |
613 |
dl |
1.4 |
*/ |
614 |
|
|
public void testToArray2() { |
615 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
616 |
|
|
Integer[] ints = new Integer[1]; |
617 |
|
|
assertNull(ints[0]); |
618 |
|
|
} |
619 |
|
|
|
620 |
dl |
1.4 |
/** |
621 |
dl |
1.6 |
* toArray(null) throws NPE |
622 |
|
|
*/ |
623 |
|
|
public void testToArray_BadArg() { |
624 |
|
|
try { |
625 |
|
|
SynchronousQueue q = new SynchronousQueue(); |
626 |
|
|
Object o[] = q.toArray(null); |
627 |
|
|
shouldThrow(); |
628 |
|
|
} catch(NullPointerException success){} |
629 |
|
|
} |
630 |
|
|
|
631 |
|
|
|
632 |
|
|
/** |
633 |
dl |
1.5 |
* iterator does not traverse any elements |
634 |
dl |
1.4 |
*/ |
635 |
|
|
public void testIterator() { |
636 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
637 |
|
|
Iterator it = q.iterator(); |
638 |
|
|
assertFalse(it.hasNext()); |
639 |
|
|
try { |
640 |
|
|
Object x = it.next(); |
641 |
dl |
1.4 |
shouldThrow(); |
642 |
dl |
1.1 |
} |
643 |
|
|
catch (NoSuchElementException success) {} |
644 |
|
|
} |
645 |
|
|
|
646 |
dl |
1.4 |
/** |
647 |
dl |
1.5 |
* iterator remove throws ISE |
648 |
dl |
1.4 |
*/ |
649 |
|
|
public void testIteratorRemove() { |
650 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
651 |
|
|
Iterator it = q.iterator(); |
652 |
|
|
try { |
653 |
|
|
it.remove(); |
654 |
dl |
1.4 |
shouldThrow(); |
655 |
dl |
1.1 |
} |
656 |
|
|
catch (IllegalStateException success) {} |
657 |
|
|
} |
658 |
|
|
|
659 |
dl |
1.4 |
/** |
660 |
dl |
1.5 |
* toString returns a non-null string |
661 |
dl |
1.4 |
*/ |
662 |
|
|
public void testToString() { |
663 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
664 |
|
|
String s = q.toString(); |
665 |
dl |
1.5 |
assertNotNull(s); |
666 |
dl |
1.1 |
} |
667 |
|
|
|
668 |
|
|
|
669 |
dl |
1.4 |
/** |
670 |
dl |
1.5 |
* offer transfers elements across Executor tasks |
671 |
dl |
1.4 |
*/ |
672 |
dl |
1.1 |
public void testOfferInExecutor() { |
673 |
|
|
final SynchronousQueue q = new SynchronousQueue(); |
674 |
|
|
ExecutorService executor = Executors.newFixedThreadPool(2); |
675 |
|
|
final Integer one = new Integer(1); |
676 |
|
|
|
677 |
|
|
executor.execute(new Runnable() { |
678 |
|
|
public void run() { |
679 |
dl |
1.3 |
threadAssertFalse(q.offer(one)); |
680 |
dl |
1.1 |
try { |
681 |
dl |
1.3 |
threadAssertTrue(q.offer(one, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS)); |
682 |
|
|
threadAssertEquals(0, q.remainingCapacity()); |
683 |
dl |
1.1 |
} |
684 |
|
|
catch (InterruptedException e) { |
685 |
dl |
1.4 |
threadUnexpectedException(); |
686 |
dl |
1.1 |
} |
687 |
|
|
} |
688 |
|
|
}); |
689 |
|
|
|
690 |
|
|
executor.execute(new Runnable() { |
691 |
|
|
public void run() { |
692 |
|
|
try { |
693 |
dl |
1.3 |
Thread.sleep(SMALL_DELAY_MS); |
694 |
|
|
threadAssertEquals(one, q.take()); |
695 |
dl |
1.1 |
} |
696 |
|
|
catch (InterruptedException e) { |
697 |
dl |
1.4 |
threadUnexpectedException(); |
698 |
dl |
1.1 |
} |
699 |
|
|
} |
700 |
|
|
}); |
701 |
|
|
|
702 |
dl |
1.3 |
joinPool(executor); |
703 |
dl |
1.1 |
|
704 |
|
|
} |
705 |
|
|
|
706 |
dl |
1.4 |
/** |
707 |
dl |
1.5 |
* poll retrieves elements across Executor threads |
708 |
dl |
1.4 |
*/ |
709 |
dl |
1.1 |
public void testPollInExecutor() { |
710 |
|
|
final SynchronousQueue q = new SynchronousQueue(); |
711 |
|
|
ExecutorService executor = Executors.newFixedThreadPool(2); |
712 |
|
|
executor.execute(new Runnable() { |
713 |
|
|
public void run() { |
714 |
dl |
1.3 |
threadAssertNull(q.poll()); |
715 |
dl |
1.1 |
try { |
716 |
dl |
1.3 |
threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS)); |
717 |
|
|
threadAssertTrue(q.isEmpty()); |
718 |
dl |
1.1 |
} |
719 |
|
|
catch (InterruptedException e) { |
720 |
dl |
1.4 |
threadUnexpectedException(); |
721 |
dl |
1.1 |
} |
722 |
|
|
} |
723 |
|
|
}); |
724 |
|
|
|
725 |
|
|
executor.execute(new Runnable() { |
726 |
|
|
public void run() { |
727 |
|
|
try { |
728 |
dl |
1.3 |
Thread.sleep(SMALL_DELAY_MS); |
729 |
dl |
1.1 |
q.put(new Integer(1)); |
730 |
|
|
} |
731 |
|
|
catch (InterruptedException e) { |
732 |
dl |
1.4 |
threadUnexpectedException(); |
733 |
dl |
1.1 |
} |
734 |
|
|
} |
735 |
|
|
}); |
736 |
|
|
|
737 |
dl |
1.3 |
joinPool(executor); |
738 |
dl |
1.2 |
} |
739 |
|
|
|
740 |
dl |
1.4 |
/** |
741 |
dl |
1.5 |
* a deserialized serialized queue is usable |
742 |
dl |
1.4 |
*/ |
743 |
dl |
1.2 |
public void testSerialization() { |
744 |
|
|
SynchronousQueue q = new SynchronousQueue(); |
745 |
|
|
try { |
746 |
|
|
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
747 |
|
|
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
748 |
|
|
out.writeObject(q); |
749 |
|
|
out.close(); |
750 |
|
|
|
751 |
|
|
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
752 |
|
|
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
753 |
|
|
SynchronousQueue r = (SynchronousQueue)in.readObject(); |
754 |
|
|
assertEquals(q.size(), r.size()); |
755 |
|
|
while (!q.isEmpty()) |
756 |
|
|
assertEquals(q.remove(), r.remove()); |
757 |
|
|
} catch(Exception e){ |
758 |
dl |
1.9 |
e.printStackTrace(); |
759 |
dl |
1.4 |
unexpectedException(); |
760 |
dl |
1.2 |
} |
761 |
dl |
1.1 |
} |
762 |
dl |
1.6 |
|
763 |
|
|
/** |
764 |
|
|
* drainTo(null) throws NPE |
765 |
|
|
*/ |
766 |
|
|
public void testDrainToNull() { |
767 |
|
|
SynchronousQueue q = new SynchronousQueue(); |
768 |
|
|
try { |
769 |
|
|
q.drainTo(null); |
770 |
|
|
shouldThrow(); |
771 |
|
|
} catch(NullPointerException success) { |
772 |
|
|
} |
773 |
|
|
} |
774 |
|
|
|
775 |
|
|
/** |
776 |
|
|
* drainTo(this) throws IAE |
777 |
|
|
*/ |
778 |
|
|
public void testDrainToSelf() { |
779 |
|
|
SynchronousQueue q = new SynchronousQueue(); |
780 |
|
|
try { |
781 |
|
|
q.drainTo(q); |
782 |
|
|
shouldThrow(); |
783 |
|
|
} catch(IllegalArgumentException success) { |
784 |
|
|
} |
785 |
|
|
} |
786 |
|
|
|
787 |
|
|
/** |
788 |
|
|
* drainTo(c) of empty queue doesn't transfer elements |
789 |
|
|
*/ |
790 |
|
|
public void testDrainTo() { |
791 |
|
|
SynchronousQueue q = new SynchronousQueue(); |
792 |
|
|
ArrayList l = new ArrayList(); |
793 |
|
|
q.drainTo(l); |
794 |
|
|
assertEquals(q.size(), 0); |
795 |
|
|
assertEquals(l.size(), 0); |
796 |
|
|
} |
797 |
|
|
|
798 |
|
|
/** |
799 |
|
|
* drainTo empties queue, unblocking a waiting put. |
800 |
|
|
*/ |
801 |
|
|
public void testDrainToWithActivePut() { |
802 |
|
|
final SynchronousQueue q = new SynchronousQueue(); |
803 |
|
|
Thread t = new Thread(new Runnable() { |
804 |
|
|
public void run() { |
805 |
|
|
try { |
806 |
|
|
q.put(new Integer(1)); |
807 |
|
|
} catch (InterruptedException ie){ |
808 |
|
|
threadUnexpectedException(); |
809 |
|
|
} |
810 |
|
|
} |
811 |
|
|
}); |
812 |
|
|
try { |
813 |
|
|
t.start(); |
814 |
|
|
ArrayList l = new ArrayList(); |
815 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
816 |
|
|
q.drainTo(l); |
817 |
|
|
assertTrue(l.size() <= 1); |
818 |
|
|
if (l.size() > 0) |
819 |
|
|
assertEquals(l.get(0), new Integer(1)); |
820 |
|
|
t.join(); |
821 |
|
|
assertTrue(l.size() <= 1); |
822 |
|
|
} catch(Exception e){ |
823 |
|
|
unexpectedException(); |
824 |
|
|
} |
825 |
|
|
} |
826 |
|
|
|
827 |
|
|
/** |
828 |
|
|
* drainTo(null, n) throws NPE |
829 |
|
|
*/ |
830 |
|
|
public void testDrainToNullN() { |
831 |
|
|
SynchronousQueue q = new SynchronousQueue(); |
832 |
|
|
try { |
833 |
|
|
q.drainTo(null, 0); |
834 |
|
|
shouldThrow(); |
835 |
|
|
} catch(NullPointerException success) { |
836 |
|
|
} |
837 |
|
|
} |
838 |
|
|
|
839 |
|
|
/** |
840 |
|
|
* drainTo(this, n) throws IAE |
841 |
|
|
*/ |
842 |
|
|
public void testDrainToSelfN() { |
843 |
|
|
SynchronousQueue q = new SynchronousQueue(); |
844 |
|
|
try { |
845 |
|
|
q.drainTo(q, 0); |
846 |
|
|
shouldThrow(); |
847 |
|
|
} catch(IllegalArgumentException success) { |
848 |
|
|
} |
849 |
|
|
} |
850 |
|
|
|
851 |
|
|
/** |
852 |
|
|
* drainTo(c, n) empties up to n elements of queue into c |
853 |
|
|
*/ |
854 |
|
|
public void testDrainToN() { |
855 |
|
|
final SynchronousQueue q = new SynchronousQueue(); |
856 |
|
|
Thread t1 = new Thread(new Runnable() { |
857 |
|
|
public void run() { |
858 |
|
|
try { |
859 |
|
|
q.put(one); |
860 |
|
|
} catch (InterruptedException ie){ |
861 |
|
|
threadUnexpectedException(); |
862 |
|
|
} |
863 |
|
|
} |
864 |
|
|
}); |
865 |
|
|
Thread t2 = new Thread(new Runnable() { |
866 |
|
|
public void run() { |
867 |
|
|
try { |
868 |
|
|
q.put(two); |
869 |
|
|
} catch (InterruptedException ie){ |
870 |
|
|
threadUnexpectedException(); |
871 |
|
|
} |
872 |
|
|
} |
873 |
|
|
}); |
874 |
|
|
|
875 |
|
|
try { |
876 |
|
|
t1.start(); |
877 |
|
|
t2.start(); |
878 |
|
|
ArrayList l = new ArrayList(); |
879 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
880 |
|
|
q.drainTo(l, 1); |
881 |
|
|
assertTrue(l.size() == 1); |
882 |
|
|
q.drainTo(l, 1); |
883 |
|
|
assertTrue(l.size() == 2); |
884 |
|
|
assertTrue(l.contains(one)); |
885 |
|
|
assertTrue(l.contains(two)); |
886 |
|
|
t1.join(); |
887 |
|
|
t2.join(); |
888 |
|
|
} catch(Exception e){ |
889 |
|
|
unexpectedException(); |
890 |
|
|
} |
891 |
|
|
} |
892 |
|
|
|
893 |
dl |
1.1 |
|
894 |
|
|
} |