1 |
dl |
1.1 |
/* |
2 |
dl |
1.10 |
* 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.concurrent.*; |
11 |
dl |
1.4 |
import java.util.*; |
12 |
dl |
1.1 |
|
13 |
dl |
1.4 |
public class FutureTaskTest extends JSR166TestCase { |
14 |
dl |
1.1 |
|
15 |
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public static void main(String[] args) { |
16 |
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junit.textui.TestRunner.run (suite()); |
17 |
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} |
18 |
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public static Test suite() { |
19 |
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return new TestSuite(FutureTaskTest.class); |
20 |
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} |
21 |
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22 |
dl |
1.4 |
/** |
23 |
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* Subclass to expose protected methods |
24 |
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*/ |
25 |
dl |
1.7 |
static class PublicFutureTask extends FutureTask { |
26 |
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public PublicFutureTask(Callable r) { super(r); } |
27 |
dl |
1.9 |
public boolean runAndReset() { return super.runAndReset(); } |
28 |
dl |
1.4 |
public void set(Object x) { super.set(x); } |
29 |
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public void setException(Throwable t) { super.setException(t); } |
30 |
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} |
31 |
dl |
1.1 |
|
32 |
dl |
1.5 |
/** |
33 |
dl |
1.6 |
* Creating a future with a null callable throws NPE |
34 |
dl |
1.5 |
*/ |
35 |
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public void testConstructor() { |
36 |
dl |
1.3 |
try { |
37 |
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FutureTask task = new FutureTask(null); |
38 |
dl |
1.5 |
shouldThrow(); |
39 |
dl |
1.3 |
} |
40 |
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catch(NullPointerException success) { |
41 |
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} |
42 |
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} |
43 |
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|
44 |
dl |
1.5 |
/** |
45 |
dl |
1.6 |
* creating a future with null runnable fails |
46 |
dl |
1.5 |
*/ |
47 |
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public void testConstructor2() { |
48 |
dl |
1.3 |
try { |
49 |
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FutureTask task = new FutureTask(null, Boolean.TRUE); |
50 |
dl |
1.5 |
shouldThrow(); |
51 |
dl |
1.3 |
} |
52 |
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catch(NullPointerException success) { |
53 |
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} |
54 |
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} |
55 |
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|
56 |
dl |
1.5 |
/** |
57 |
dl |
1.6 |
* isDone is true when a task completes |
58 |
dl |
1.5 |
*/ |
59 |
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public void testIsDone() { |
60 |
dl |
1.4 |
FutureTask task = new FutureTask( new NoOpCallable()); |
61 |
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task.run(); |
62 |
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assertTrue(task.isDone()); |
63 |
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assertFalse(task.isCancelled()); |
64 |
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} |
65 |
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|
66 |
dl |
1.5 |
/** |
67 |
dl |
1.9 |
* runAndReset of a non-cancelled task succeeds |
68 |
dl |
1.5 |
*/ |
69 |
dl |
1.9 |
public void testRunAndReset() { |
70 |
dl |
1.7 |
PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
71 |
dl |
1.9 |
assertTrue(task.runAndReset()); |
72 |
dl |
1.6 |
assertFalse(task.isDone()); |
73 |
dl |
1.4 |
} |
74 |
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|
75 |
dl |
1.5 |
/** |
76 |
dl |
1.9 |
* runAndReset after cancellation fails |
77 |
dl |
1.5 |
*/ |
78 |
dl |
1.4 |
public void testResetAfterCancel() { |
79 |
dl |
1.7 |
PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
80 |
dl |
1.4 |
assertTrue(task.cancel(false)); |
81 |
dl |
1.9 |
assertFalse(task.runAndReset()); |
82 |
dl |
1.1 |
assertTrue(task.isDone()); |
83 |
dl |
1.4 |
assertTrue(task.isCancelled()); |
84 |
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} |
85 |
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|
86 |
dl |
1.1 |
|
87 |
dl |
1.4 |
|
88 |
dl |
1.5 |
/** |
89 |
dl |
1.11 |
* setting value causes get to return it |
90 |
dl |
1.5 |
*/ |
91 |
dl |
1.4 |
public void testSet() { |
92 |
dl |
1.7 |
PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
93 |
dl |
1.4 |
task.set(one); |
94 |
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try { |
95 |
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assertEquals(task.get(), one); |
96 |
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} |
97 |
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catch(Exception e) { |
98 |
dl |
1.5 |
unexpectedException(); |
99 |
dl |
1.4 |
} |
100 |
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} |
101 |
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|
102 |
dl |
1.5 |
/** |
103 |
dl |
1.6 |
* setException causes get to throw ExecutionException |
104 |
dl |
1.5 |
*/ |
105 |
dl |
1.4 |
public void testSetException() { |
106 |
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Exception nse = new NoSuchElementException(); |
107 |
dl |
1.7 |
PublicFutureTask task = new PublicFutureTask(new NoOpCallable()); |
108 |
dl |
1.4 |
task.setException(nse); |
109 |
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try { |
110 |
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Object x = task.get(); |
111 |
dl |
1.5 |
shouldThrow(); |
112 |
dl |
1.4 |
} |
113 |
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catch(ExecutionException ee) { |
114 |
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Throwable cause = ee.getCause(); |
115 |
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assertEquals(cause, nse); |
116 |
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} |
117 |
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catch(Exception e) { |
118 |
dl |
1.5 |
unexpectedException(); |
119 |
dl |
1.4 |
} |
120 |
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} |
121 |
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|
122 |
dl |
1.5 |
/** |
123 |
dl |
1.6 |
* Cancelling before running succeeds |
124 |
dl |
1.5 |
*/ |
125 |
dl |
1.1 |
public void testCancelBeforeRun() { |
126 |
dl |
1.4 |
FutureTask task = new FutureTask( new NoOpCallable()); |
127 |
dl |
1.1 |
assertTrue(task.cancel(false)); |
128 |
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task.run(); |
129 |
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assertTrue(task.isDone()); |
130 |
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assertTrue(task.isCancelled()); |
131 |
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} |
132 |
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|
133 |
dl |
1.5 |
/** |
134 |
dl |
1.6 |
* Cancel(true) before run succeeds |
135 |
dl |
1.5 |
*/ |
136 |
dl |
1.1 |
public void testCancelBeforeRun2() { |
137 |
dl |
1.4 |
FutureTask task = new FutureTask( new NoOpCallable()); |
138 |
dl |
1.1 |
assertTrue(task.cancel(true)); |
139 |
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task.run(); |
140 |
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assertTrue(task.isDone()); |
141 |
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assertTrue(task.isCancelled()); |
142 |
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} |
143 |
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|
144 |
dl |
1.5 |
/** |
145 |
dl |
1.6 |
* cancel of a completed task fails |
146 |
dl |
1.5 |
*/ |
147 |
dl |
1.1 |
public void testCancelAfterRun() { |
148 |
dl |
1.4 |
FutureTask task = new FutureTask( new NoOpCallable()); |
149 |
dl |
1.1 |
task.run(); |
150 |
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assertFalse(task.cancel(false)); |
151 |
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assertTrue(task.isDone()); |
152 |
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assertFalse(task.isCancelled()); |
153 |
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} |
154 |
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|
155 |
dl |
1.5 |
/** |
156 |
dl |
1.6 |
* cancel(true) interrupts a running task |
157 |
dl |
1.5 |
*/ |
158 |
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public void testCancelInterrupt() { |
159 |
dl |
1.1 |
FutureTask task = new FutureTask( new Callable() { |
160 |
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public Object call() { |
161 |
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try { |
162 |
dl |
1.4 |
Thread.sleep(MEDIUM_DELAY_MS); |
163 |
dl |
1.5 |
threadShouldThrow(); |
164 |
dl |
1.1 |
} |
165 |
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catch (InterruptedException success) {} |
166 |
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return Boolean.TRUE; |
167 |
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} }); |
168 |
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Thread t = new Thread(task); |
169 |
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t.start(); |
170 |
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|
171 |
dl |
1.5 |
try { |
172 |
dl |
1.1 |
Thread.sleep(SHORT_DELAY_MS); |
173 |
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assertTrue(task.cancel(true)); |
174 |
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t.join(); |
175 |
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assertTrue(task.isDone()); |
176 |
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assertTrue(task.isCancelled()); |
177 |
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} catch(InterruptedException e){ |
178 |
dl |
1.5 |
unexpectedException(); |
179 |
dl |
1.1 |
} |
180 |
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} |
181 |
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182 |
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|
183 |
dl |
1.5 |
/** |
184 |
dl |
1.6 |
* cancel(false) does not interrupt a running task |
185 |
dl |
1.5 |
*/ |
186 |
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public void testCancelNoInterrupt() { |
187 |
dl |
1.1 |
FutureTask task = new FutureTask( new Callable() { |
188 |
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public Object call() { |
189 |
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try { |
190 |
dl |
1.4 |
Thread.sleep(MEDIUM_DELAY_MS); |
191 |
dl |
1.1 |
} |
192 |
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catch (InterruptedException success) { |
193 |
dl |
1.4 |
threadFail("should not interrupt"); |
194 |
dl |
1.1 |
} |
195 |
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return Boolean.TRUE; |
196 |
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} }); |
197 |
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Thread t = new Thread(task); |
198 |
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t.start(); |
199 |
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|
200 |
dl |
1.5 |
try { |
201 |
dl |
1.1 |
Thread.sleep(SHORT_DELAY_MS); |
202 |
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assertTrue(task.cancel(false)); |
203 |
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t.join(); |
204 |
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assertTrue(task.isDone()); |
205 |
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assertTrue(task.isCancelled()); |
206 |
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} catch(InterruptedException e){ |
207 |
dl |
1.5 |
unexpectedException(); |
208 |
dl |
1.1 |
} |
209 |
|
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} |
210 |
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|
211 |
dl |
1.5 |
/** |
212 |
dl |
1.6 |
* set in one thread causes get in another thread to retrieve value |
213 |
dl |
1.5 |
*/ |
214 |
dl |
1.1 |
public void testGet1() { |
215 |
dl |
1.5 |
final FutureTask ft = new FutureTask(new Callable() { |
216 |
|
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public Object call() { |
217 |
|
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try { |
218 |
dl |
1.1 |
Thread.sleep(MEDIUM_DELAY_MS); |
219 |
dl |
1.2 |
} catch(InterruptedException e){ |
220 |
dl |
1.5 |
threadUnexpectedException(); |
221 |
dl |
1.1 |
} |
222 |
|
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return Boolean.TRUE; |
223 |
|
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} |
224 |
|
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}); |
225 |
dl |
1.5 |
Thread t = new Thread(new Runnable() { |
226 |
|
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public void run() { |
227 |
|
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try { |
228 |
dl |
1.1 |
ft.get(); |
229 |
dl |
1.2 |
} catch(Exception e){ |
230 |
dl |
1.5 |
threadUnexpectedException(); |
231 |
dl |
1.1 |
} |
232 |
|
|
} |
233 |
|
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}); |
234 |
dl |
1.5 |
try { |
235 |
dl |
1.1 |
assertFalse(ft.isDone()); |
236 |
|
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assertFalse(ft.isCancelled()); |
237 |
|
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t.start(); |
238 |
|
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Thread.sleep(SHORT_DELAY_MS); |
239 |
|
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ft.run(); |
240 |
|
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t.join(); |
241 |
|
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assertTrue(ft.isDone()); |
242 |
|
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assertFalse(ft.isCancelled()); |
243 |
|
|
} catch(InterruptedException e){ |
244 |
dl |
1.5 |
unexpectedException(); |
245 |
dl |
1.1 |
|
246 |
|
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} |
247 |
|
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} |
248 |
|
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|
249 |
dl |
1.5 |
/** |
250 |
dl |
1.6 |
* set in one thread causes timed get in another thread to retrieve value |
251 |
dl |
1.5 |
*/ |
252 |
dl |
1.1 |
public void testTimedGet1() { |
253 |
dl |
1.5 |
final FutureTask ft = new FutureTask(new Callable() { |
254 |
|
|
public Object call() { |
255 |
|
|
try { |
256 |
dl |
1.1 |
Thread.sleep(MEDIUM_DELAY_MS); |
257 |
dl |
1.2 |
} catch(InterruptedException e){ |
258 |
dl |
1.5 |
threadUnexpectedException(); |
259 |
dl |
1.1 |
} |
260 |
|
|
return Boolean.TRUE; |
261 |
|
|
} |
262 |
|
|
}); |
263 |
dl |
1.5 |
Thread t = new Thread(new Runnable() { |
264 |
|
|
public void run() { |
265 |
|
|
try { |
266 |
dl |
1.1 |
ft.get(SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
267 |
|
|
} catch(TimeoutException success) { |
268 |
|
|
} catch(Exception e){ |
269 |
dl |
1.5 |
threadUnexpectedException(); |
270 |
dl |
1.1 |
} |
271 |
|
|
} |
272 |
|
|
}); |
273 |
dl |
1.5 |
try { |
274 |
dl |
1.1 |
assertFalse(ft.isDone()); |
275 |
|
|
assertFalse(ft.isCancelled()); |
276 |
|
|
t.start(); |
277 |
|
|
ft.run(); |
278 |
|
|
t.join(); |
279 |
|
|
assertTrue(ft.isDone()); |
280 |
|
|
assertFalse(ft.isCancelled()); |
281 |
|
|
} catch(InterruptedException e){ |
282 |
dl |
1.5 |
unexpectedException(); |
283 |
dl |
1.1 |
|
284 |
|
|
} |
285 |
|
|
} |
286 |
|
|
|
287 |
dl |
1.5 |
/** |
288 |
dl |
1.6 |
* Cancelling a task causes timed get in another thread to throw CancellationException |
289 |
dl |
1.5 |
*/ |
290 |
dl |
1.6 |
public void testTimedGet_Cancellation() { |
291 |
dl |
1.5 |
final FutureTask ft = new FutureTask(new Callable() { |
292 |
|
|
public Object call() { |
293 |
|
|
try { |
294 |
dl |
1.6 |
Thread.sleep(SMALL_DELAY_MS); |
295 |
|
|
threadShouldThrow(); |
296 |
|
|
} catch(InterruptedException e) { |
297 |
dl |
1.1 |
} |
298 |
dl |
1.6 |
return Boolean.TRUE; |
299 |
dl |
1.1 |
} |
300 |
|
|
}); |
301 |
|
|
try { |
302 |
dl |
1.6 |
Thread t1 = new Thread(new Runnable() { |
303 |
dl |
1.5 |
public void run() { |
304 |
|
|
try { |
305 |
dl |
1.6 |
ft.get(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
306 |
dl |
1.5 |
threadShouldThrow(); |
307 |
dl |
1.6 |
} catch(CancellationException success) {} |
308 |
dl |
1.1 |
catch(Exception e){ |
309 |
dl |
1.5 |
threadUnexpectedException(); |
310 |
dl |
1.6 |
} |
311 |
dl |
1.1 |
} |
312 |
|
|
}); |
313 |
dl |
1.6 |
Thread t2 = new Thread(ft); |
314 |
|
|
t1.start(); |
315 |
|
|
t2.start(); |
316 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
317 |
dl |
1.1 |
ft.cancel(true); |
318 |
dl |
1.6 |
t1.join(); |
319 |
|
|
t2.join(); |
320 |
|
|
} catch(InterruptedException ie){ |
321 |
dl |
1.5 |
unexpectedException(); |
322 |
dl |
1.1 |
} |
323 |
|
|
} |
324 |
dl |
1.6 |
|
325 |
dl |
1.5 |
/** |
326 |
dl |
1.6 |
* Cancelling a task causes get in another thread to throw CancellationException |
327 |
dl |
1.5 |
*/ |
328 |
dl |
1.6 |
public void testGet_Cancellation() { |
329 |
dl |
1.5 |
final FutureTask ft = new FutureTask(new Callable() { |
330 |
|
|
public Object call() { |
331 |
|
|
try { |
332 |
dl |
1.6 |
Thread.sleep(MEDIUM_DELAY_MS); |
333 |
|
|
threadShouldThrow(); |
334 |
|
|
} catch(InterruptedException e){ |
335 |
dl |
1.1 |
} |
336 |
dl |
1.6 |
return Boolean.TRUE; |
337 |
dl |
1.1 |
} |
338 |
|
|
}); |
339 |
dl |
1.5 |
try { |
340 |
dl |
1.6 |
Thread t1 = new Thread(new Runnable() { |
341 |
dl |
1.5 |
public void run() { |
342 |
|
|
try { |
343 |
dl |
1.6 |
ft.get(); |
344 |
dl |
1.5 |
threadShouldThrow(); |
345 |
dl |
1.6 |
} catch(CancellationException success){ |
346 |
|
|
} |
347 |
dl |
1.1 |
catch(Exception e){ |
348 |
dl |
1.5 |
threadUnexpectedException(); |
349 |
dl |
1.6 |
} |
350 |
dl |
1.1 |
} |
351 |
|
|
}); |
352 |
dl |
1.6 |
Thread t2 = new Thread(ft); |
353 |
|
|
t1.start(); |
354 |
|
|
t2.start(); |
355 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
356 |
dl |
1.1 |
ft.cancel(true); |
357 |
dl |
1.6 |
t1.join(); |
358 |
|
|
t2.join(); |
359 |
|
|
} catch(InterruptedException success){ |
360 |
dl |
1.5 |
unexpectedException(); |
361 |
dl |
1.1 |
} |
362 |
|
|
} |
363 |
dl |
1.6 |
|
364 |
dl |
1.1 |
|
365 |
dl |
1.5 |
/** |
366 |
dl |
1.6 |
* A runtime exception in task causes get to throw ExecutionException |
367 |
dl |
1.5 |
*/ |
368 |
|
|
public void testGet_ExecutionException() { |
369 |
|
|
final FutureTask ft = new FutureTask(new Callable() { |
370 |
|
|
public Object call() { |
371 |
dl |
1.1 |
int i = 5/0; |
372 |
|
|
return Boolean.TRUE; |
373 |
|
|
} |
374 |
|
|
}); |
375 |
dl |
1.5 |
try { |
376 |
dl |
1.1 |
ft.run(); |
377 |
|
|
ft.get(); |
378 |
dl |
1.5 |
shouldThrow(); |
379 |
dl |
1.2 |
} catch(ExecutionException success){ |
380 |
dl |
1.1 |
} |
381 |
|
|
catch(Exception e){ |
382 |
dl |
1.5 |
unexpectedException(); |
383 |
dl |
1.1 |
} |
384 |
|
|
} |
385 |
|
|
|
386 |
dl |
1.5 |
/** |
387 |
dl |
1.6 |
* A runtime exception in task causes timed get to throw ExecutionException |
388 |
dl |
1.5 |
*/ |
389 |
|
|
public void testTimedGet_ExecutionException2() { |
390 |
|
|
final FutureTask ft = new FutureTask(new Callable() { |
391 |
|
|
public Object call() { |
392 |
dl |
1.1 |
int i = 5/0; |
393 |
|
|
return Boolean.TRUE; |
394 |
|
|
} |
395 |
|
|
}); |
396 |
dl |
1.5 |
try { |
397 |
dl |
1.1 |
ft.run(); |
398 |
|
|
ft.get(SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
399 |
dl |
1.5 |
shouldThrow(); |
400 |
dl |
1.2 |
} catch(ExecutionException success) { |
401 |
|
|
} catch(TimeoutException success) { } // unlikely but OK |
402 |
dl |
1.1 |
catch(Exception e){ |
403 |
dl |
1.5 |
unexpectedException(); |
404 |
dl |
1.1 |
} |
405 |
|
|
} |
406 |
|
|
|
407 |
|
|
|
408 |
dl |
1.5 |
/** |
409 |
dl |
1.6 |
* Interrupting a waiting get causes it to throw InterruptedException |
410 |
dl |
1.5 |
*/ |
411 |
|
|
public void testGet_InterruptedException() { |
412 |
dl |
1.4 |
final FutureTask ft = new FutureTask(new NoOpCallable()); |
413 |
dl |
1.5 |
Thread t = new Thread(new Runnable() { |
414 |
|
|
public void run() { |
415 |
|
|
try { |
416 |
dl |
1.1 |
ft.get(); |
417 |
dl |
1.5 |
threadShouldThrow(); |
418 |
dl |
1.1 |
} catch(InterruptedException success){ |
419 |
|
|
} catch(Exception e){ |
420 |
dl |
1.5 |
threadUnexpectedException(); |
421 |
dl |
1.1 |
} |
422 |
|
|
} |
423 |
|
|
}); |
424 |
|
|
try { |
425 |
|
|
t.start(); |
426 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
427 |
|
|
t.interrupt(); |
428 |
|
|
t.join(); |
429 |
|
|
} catch(Exception e){ |
430 |
dl |
1.5 |
unexpectedException(); |
431 |
dl |
1.1 |
} |
432 |
|
|
} |
433 |
|
|
|
434 |
dl |
1.5 |
/** |
435 |
dl |
1.6 |
* Interrupting a waiting timed get causes it to throw InterruptedException |
436 |
dl |
1.5 |
*/ |
437 |
|
|
public void testTimedGet_InterruptedException2() { |
438 |
dl |
1.4 |
final FutureTask ft = new FutureTask(new NoOpCallable()); |
439 |
dl |
1.5 |
Thread t = new Thread(new Runnable() { |
440 |
|
|
public void run() { |
441 |
|
|
try { |
442 |
dl |
1.4 |
ft.get(LONG_DELAY_MS,TimeUnit.MILLISECONDS); |
443 |
dl |
1.5 |
threadShouldThrow(); |
444 |
dl |
1.2 |
} catch(InterruptedException success){} |
445 |
dl |
1.1 |
catch(Exception e){ |
446 |
dl |
1.5 |
threadUnexpectedException(); |
447 |
dl |
1.1 |
} |
448 |
|
|
} |
449 |
|
|
}); |
450 |
|
|
try { |
451 |
|
|
t.start(); |
452 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
453 |
|
|
t.interrupt(); |
454 |
|
|
t.join(); |
455 |
|
|
} catch(Exception e){ |
456 |
dl |
1.5 |
unexpectedException(); |
457 |
dl |
1.1 |
} |
458 |
|
|
} |
459 |
|
|
|
460 |
dl |
1.5 |
/** |
461 |
dl |
1.6 |
* A timed out timed get throws TimeoutException |
462 |
dl |
1.5 |
*/ |
463 |
|
|
public void testGet_TimeoutException() { |
464 |
|
|
try { |
465 |
dl |
1.4 |
FutureTask ft = new FutureTask(new NoOpCallable()); |
466 |
dl |
1.1 |
ft.get(1,TimeUnit.MILLISECONDS); |
467 |
dl |
1.5 |
shouldThrow(); |
468 |
dl |
1.2 |
} catch(TimeoutException success){} |
469 |
|
|
catch(Exception success){ |
470 |
dl |
1.5 |
unexpectedException(); |
471 |
dl |
1.1 |
} |
472 |
|
|
} |
473 |
|
|
|
474 |
|
|
} |