1 |
dl |
1.1 |
/* |
2 |
|
|
* Written by members of JCP JSR-166 Expert Group and released to the |
3 |
|
|
* public domain. Use, modify, and redistribute this code in any way |
4 |
|
|
* without acknowledgement. Other contributors include Andrew Wright, |
5 |
|
|
* Jeffrey Hayes, Pat Fischer, Mike Judd. |
6 |
|
|
*/ |
7 |
|
|
|
8 |
|
|
import junit.framework.*; |
9 |
|
|
import java.util.concurrent.*; |
10 |
|
|
|
11 |
|
|
public class FutureTaskTest extends TestCase { |
12 |
|
|
|
13 |
|
|
public static void main(String[] args) { |
14 |
|
|
junit.textui.TestRunner.run (suite()); |
15 |
|
|
} |
16 |
|
|
public static Test suite() { |
17 |
|
|
return new TestSuite(FutureTaskTest.class); |
18 |
|
|
} |
19 |
|
|
|
20 |
|
|
private static long SHORT_DELAY_MS = 100; |
21 |
|
|
private static long MEDIUM_DELAY_MS = 1000; |
22 |
|
|
private static long LONG_DELAY_MS = 10000; |
23 |
|
|
|
24 |
|
|
public void testIsDone(){ |
25 |
|
|
FutureTask task = new FutureTask( new Callable() { |
26 |
|
|
public Object call() { return Boolean.TRUE; } }); |
27 |
|
|
task.run(); |
28 |
|
|
assertTrue(task.isDone()); |
29 |
|
|
assertFalse(task.isCancelled()); |
30 |
|
|
} |
31 |
|
|
|
32 |
|
|
public void testCancelBeforeRun() { |
33 |
|
|
FutureTask task = new FutureTask( new Callable() { |
34 |
|
|
public Object call() { return Boolean.TRUE; } }); |
35 |
|
|
assertTrue(task.cancel(false)); |
36 |
|
|
task.run(); |
37 |
|
|
assertTrue(task.isDone()); |
38 |
|
|
assertTrue(task.isCancelled()); |
39 |
|
|
} |
40 |
|
|
|
41 |
|
|
public void testCancelBeforeRun2() { |
42 |
|
|
FutureTask task = new FutureTask( new Callable() { |
43 |
|
|
public Object call() { return Boolean.TRUE; } }); |
44 |
|
|
assertTrue(task.cancel(true)); |
45 |
|
|
task.run(); |
46 |
|
|
assertTrue(task.isDone()); |
47 |
|
|
assertTrue(task.isCancelled()); |
48 |
|
|
} |
49 |
|
|
|
50 |
|
|
public void testCancelAfterRun() { |
51 |
|
|
FutureTask task = new FutureTask( new Callable() { |
52 |
|
|
public Object call() { return Boolean.TRUE; } }); |
53 |
|
|
task.run(); |
54 |
|
|
assertFalse(task.cancel(false)); |
55 |
|
|
assertTrue(task.isDone()); |
56 |
|
|
assertFalse(task.isCancelled()); |
57 |
|
|
} |
58 |
|
|
|
59 |
|
|
public void testCancelInterrupt(){ |
60 |
|
|
FutureTask task = new FutureTask( new Callable() { |
61 |
|
|
public Object call() { |
62 |
|
|
try { |
63 |
|
|
Thread.sleep(SHORT_DELAY_MS* 2); |
64 |
|
|
fail("should throw"); |
65 |
|
|
} |
66 |
|
|
catch (InterruptedException success) {} |
67 |
|
|
return Boolean.TRUE; |
68 |
|
|
} }); |
69 |
|
|
Thread t = new Thread(task); |
70 |
|
|
t.start(); |
71 |
|
|
|
72 |
|
|
try{ |
73 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
74 |
|
|
assertTrue(task.cancel(true)); |
75 |
|
|
t.join(); |
76 |
|
|
assertTrue(task.isDone()); |
77 |
|
|
assertTrue(task.isCancelled()); |
78 |
|
|
} catch(InterruptedException e){ |
79 |
|
|
fail("unexpected exception"); |
80 |
|
|
} |
81 |
|
|
} |
82 |
|
|
|
83 |
|
|
|
84 |
|
|
public void testCancelNoInterrupt(){ |
85 |
|
|
FutureTask task = new FutureTask( new Callable() { |
86 |
|
|
public Object call() { |
87 |
|
|
try { |
88 |
|
|
Thread.sleep(SHORT_DELAY_MS* 2); |
89 |
|
|
} |
90 |
|
|
catch (InterruptedException success) { |
91 |
|
|
fail("should not interrupt"); |
92 |
|
|
} |
93 |
|
|
return Boolean.TRUE; |
94 |
|
|
} }); |
95 |
|
|
Thread t = new Thread(task); |
96 |
|
|
t.start(); |
97 |
|
|
|
98 |
|
|
try{ |
99 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
100 |
|
|
assertTrue(task.cancel(false)); |
101 |
|
|
t.join(); |
102 |
|
|
assertTrue(task.isDone()); |
103 |
|
|
assertTrue(task.isCancelled()); |
104 |
|
|
} catch(InterruptedException e){ |
105 |
|
|
fail("unexpected exception"); |
106 |
|
|
} |
107 |
|
|
} |
108 |
|
|
|
109 |
|
|
public void testGet1() { |
110 |
|
|
final FutureTask ft = new FutureTask(new Callable(){ |
111 |
|
|
public Object call(){ |
112 |
|
|
try{ |
113 |
|
|
Thread.sleep(MEDIUM_DELAY_MS); |
114 |
|
|
}catch(InterruptedException e){ |
115 |
|
|
fail("unexpected exception"); |
116 |
|
|
} |
117 |
|
|
return Boolean.TRUE; |
118 |
|
|
} |
119 |
|
|
}); |
120 |
|
|
Thread t = new Thread(new Runnable(){ |
121 |
|
|
public void run(){ |
122 |
|
|
try{ |
123 |
|
|
ft.get(); |
124 |
|
|
}catch(Exception e){ |
125 |
|
|
fail("unexpected exception"); |
126 |
|
|
} |
127 |
|
|
} |
128 |
|
|
}); |
129 |
|
|
try{ |
130 |
|
|
assertFalse(ft.isDone()); |
131 |
|
|
assertFalse(ft.isCancelled()); |
132 |
|
|
t.start(); |
133 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
134 |
|
|
ft.run(); |
135 |
|
|
t.join(); |
136 |
|
|
assertTrue(ft.isDone()); |
137 |
|
|
assertFalse(ft.isCancelled()); |
138 |
|
|
} catch(InterruptedException e){ |
139 |
|
|
fail("unexpected exception"); |
140 |
|
|
|
141 |
|
|
} |
142 |
|
|
} |
143 |
|
|
|
144 |
|
|
public void testTimedGet1() { |
145 |
|
|
final FutureTask ft = new FutureTask(new Callable(){ |
146 |
|
|
public Object call(){ |
147 |
|
|
try{ |
148 |
|
|
Thread.sleep(MEDIUM_DELAY_MS); |
149 |
|
|
}catch(InterruptedException e){ |
150 |
|
|
fail("unexpected exception"); |
151 |
|
|
} |
152 |
|
|
return Boolean.TRUE; |
153 |
|
|
} |
154 |
|
|
}); |
155 |
|
|
Thread t = new Thread(new Runnable(){ |
156 |
|
|
public void run(){ |
157 |
|
|
try{ |
158 |
|
|
ft.get(SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
159 |
|
|
} catch(TimeoutException success) { |
160 |
|
|
} catch(Exception e){ |
161 |
|
|
fail("unexpected exception"); |
162 |
|
|
} |
163 |
|
|
} |
164 |
|
|
}); |
165 |
|
|
try{ |
166 |
|
|
assertFalse(ft.isDone()); |
167 |
|
|
assertFalse(ft.isCancelled()); |
168 |
|
|
t.start(); |
169 |
|
|
ft.run(); |
170 |
|
|
t.join(); |
171 |
|
|
assertTrue(ft.isDone()); |
172 |
|
|
assertFalse(ft.isCancelled()); |
173 |
|
|
} catch(InterruptedException e){ |
174 |
|
|
fail("unexpected exception"); |
175 |
|
|
|
176 |
|
|
} |
177 |
|
|
} |
178 |
|
|
|
179 |
|
|
|
180 |
|
|
public void testGet_Cancellation(){ |
181 |
|
|
final FutureTask ft = new FutureTask(new Callable(){ |
182 |
|
|
public Object call(){ |
183 |
|
|
try{ |
184 |
|
|
Thread.sleep(MEDIUM_DELAY_MS); |
185 |
|
|
}catch(InterruptedException e){ |
186 |
|
|
fail("unexpected exception"); |
187 |
|
|
} |
188 |
|
|
return Boolean.TRUE; |
189 |
|
|
} |
190 |
|
|
}); |
191 |
|
|
try { |
192 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
193 |
|
|
Thread t = new Thread(new Runnable(){ |
194 |
|
|
public void run(){ |
195 |
|
|
try{ |
196 |
|
|
ft.get(); |
197 |
|
|
fail("should throw"); |
198 |
|
|
}catch(CancellationException success){ |
199 |
|
|
} |
200 |
|
|
catch(Exception e){ |
201 |
|
|
fail("unexpected exception"); |
202 |
|
|
} |
203 |
|
|
} |
204 |
|
|
}); |
205 |
|
|
t.start(); |
206 |
|
|
ft.cancel(true); |
207 |
|
|
t.join(); |
208 |
|
|
}catch(InterruptedException sucess){ |
209 |
|
|
fail("unexpected exception"); |
210 |
|
|
} |
211 |
|
|
} |
212 |
|
|
|
213 |
|
|
public void testGet_Cancellation2(){ |
214 |
|
|
final FutureTask ft = new FutureTask(new Callable(){ |
215 |
|
|
public Object call(){ |
216 |
|
|
try{ |
217 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
218 |
|
|
} catch(InterruptedException e) { |
219 |
|
|
fail("unexpected exception"); |
220 |
|
|
} |
221 |
|
|
return Boolean.TRUE; |
222 |
|
|
} |
223 |
|
|
}); |
224 |
|
|
try{ |
225 |
|
|
Thread.sleep(100); |
226 |
|
|
Thread t = new Thread(new Runnable(){ |
227 |
|
|
public void run(){ |
228 |
|
|
try{ |
229 |
|
|
ft.get(3 * SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
230 |
|
|
fail("should throw"); |
231 |
|
|
}catch(CancellationException success) {} |
232 |
|
|
catch(Exception e){ |
233 |
|
|
fail("unexpected exception"); |
234 |
|
|
} |
235 |
|
|
} |
236 |
|
|
}); |
237 |
|
|
t.start(); |
238 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
239 |
|
|
ft.cancel(true); |
240 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
241 |
|
|
t.join(); |
242 |
|
|
}catch(InterruptedException ie){ |
243 |
|
|
fail("unexpected exception"); |
244 |
|
|
} |
245 |
|
|
} |
246 |
|
|
|
247 |
|
|
public void testGet_ExecutionException(){ |
248 |
|
|
final FutureTask ft = new FutureTask(new Callable(){ |
249 |
|
|
public Object call(){ |
250 |
|
|
int i = 5/0; |
251 |
|
|
return Boolean.TRUE; |
252 |
|
|
} |
253 |
|
|
}); |
254 |
|
|
try{ |
255 |
|
|
ft.run(); |
256 |
|
|
ft.get(); |
257 |
|
|
fail("should throw"); |
258 |
|
|
}catch(ExecutionException success){ |
259 |
|
|
} |
260 |
|
|
catch(Exception e){ |
261 |
|
|
fail("unexpected exception"); |
262 |
|
|
} |
263 |
|
|
} |
264 |
|
|
|
265 |
|
|
public void testTimedGet_ExecutionException2(){ |
266 |
|
|
final FutureTask ft = new FutureTask(new Callable(){ |
267 |
|
|
public Object call(){ |
268 |
|
|
int i = 5/0; |
269 |
|
|
return Boolean.TRUE; |
270 |
|
|
} |
271 |
|
|
}); |
272 |
|
|
try{ |
273 |
|
|
ft.run(); |
274 |
|
|
ft.get(SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
275 |
|
|
fail("should throw"); |
276 |
|
|
}catch(ExecutionException success) { |
277 |
|
|
}catch(TimeoutException success) { } // unlikely but OK |
278 |
|
|
catch(Exception e){ |
279 |
|
|
fail("unexpected exception"); |
280 |
|
|
} |
281 |
|
|
} |
282 |
|
|
|
283 |
|
|
|
284 |
|
|
public void testGet_InterruptedException(){ |
285 |
|
|
final FutureTask ft = new FutureTask(new Callable(){ |
286 |
|
|
public Object call(){ |
287 |
|
|
return new Object(); |
288 |
|
|
} |
289 |
|
|
}); |
290 |
|
|
Thread t = new Thread(new Runnable(){ |
291 |
|
|
public void run(){ |
292 |
|
|
try{ |
293 |
|
|
ft.get(); |
294 |
|
|
fail("should throw"); |
295 |
|
|
} catch(InterruptedException success){ |
296 |
|
|
} catch(Exception e){ |
297 |
|
|
fail("unexpected exception"); |
298 |
|
|
} |
299 |
|
|
} |
300 |
|
|
}); |
301 |
|
|
try { |
302 |
|
|
t.start(); |
303 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
304 |
|
|
t.interrupt(); |
305 |
|
|
t.join(); |
306 |
|
|
} catch(Exception e){ |
307 |
|
|
fail("unexpected exception"); |
308 |
|
|
} |
309 |
|
|
} |
310 |
|
|
|
311 |
|
|
public void testTimedGet_InterruptedException2(){ |
312 |
|
|
final FutureTask ft = new FutureTask(new Callable(){ |
313 |
|
|
public Object call(){ |
314 |
|
|
return new Object(); |
315 |
|
|
} |
316 |
|
|
}); |
317 |
|
|
Thread t = new Thread(new Runnable(){ |
318 |
|
|
public void run(){ |
319 |
|
|
try{ |
320 |
|
|
ft.get(100,TimeUnit.SECONDS); |
321 |
|
|
fail("should throw"); |
322 |
|
|
}catch(InterruptedException success){} |
323 |
|
|
catch(Exception e){ |
324 |
|
|
fail("unexpected exception"); |
325 |
|
|
} |
326 |
|
|
} |
327 |
|
|
}); |
328 |
|
|
try { |
329 |
|
|
t.start(); |
330 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
331 |
|
|
t.interrupt(); |
332 |
|
|
t.join(); |
333 |
|
|
} catch(Exception e){ |
334 |
|
|
fail("unexpected exception"); |
335 |
|
|
} |
336 |
|
|
} |
337 |
|
|
|
338 |
|
|
public void testGet_TimeoutException(){ |
339 |
|
|
FutureTask ft = new FutureTask(new Callable(){ |
340 |
|
|
public Object call(){ |
341 |
|
|
return new Object(); |
342 |
|
|
} |
343 |
|
|
}); |
344 |
|
|
try{ |
345 |
|
|
ft.get(1,TimeUnit.MILLISECONDS); |
346 |
|
|
fail("should throw"); |
347 |
|
|
}catch(TimeoutException success){} |
348 |
|
|
catch(Exception sucess){ |
349 |
|
|
fail("unexpected exception"); |
350 |
|
|
} |
351 |
|
|
|
352 |
|
|
|
353 |
|
|
} |
354 |
|
|
|
355 |
|
|
} |