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1.1 |
/* |
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* Written by members of JCP JSR-166 Expert Group and released to the |
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* public domain. Use, modify, and redistribute this code in any way |
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* without acknowledgement. Other contributors include Andrew Wright, |
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* Jeffrey Hayes, Pat Fischer, Mike Judd. |
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*/ |
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import junit.framework.*; |
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import java.util.concurrent.*; |
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dl |
1.4 |
import java.util.*; |
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1.1 |
|
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dl |
1.4 |
public class FutureTaskTest extends JSR166TestCase { |
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1.1 |
|
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public static void main(String[] args) { |
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junit.textui.TestRunner.run (suite()); |
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} |
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public static Test suite() { |
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return new TestSuite(FutureTaskTest.class); |
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} |
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dl |
1.4 |
/** |
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* Subclass to expose protected methods |
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*/ |
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static class MyFutureTask extends FutureTask { |
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public MyFutureTask(Callable r) { super(r); } |
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public boolean reset() { return super.reset(); } |
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public void setCancelled() { super.setCancelled(); } |
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public void setDone() { super.setDone(); } |
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public void set(Object x) { super.set(x); } |
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public void setException(Throwable t) { super.setException(t); } |
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} |
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1.1 |
|
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dl |
1.5 |
/** |
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1.6 |
* Creating a future with a null callable throws NPE |
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dl |
1.5 |
*/ |
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public void testConstructor() { |
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dl |
1.3 |
try { |
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FutureTask task = new FutureTask(null); |
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dl |
1.5 |
shouldThrow(); |
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1.3 |
} |
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catch(NullPointerException success) { |
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} |
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} |
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|
45 |
dl |
1.5 |
/** |
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1.6 |
* creating a future with null runnable fails |
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1.5 |
*/ |
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public void testConstructor2() { |
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1.3 |
try { |
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FutureTask task = new FutureTask(null, Boolean.TRUE); |
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1.5 |
shouldThrow(); |
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1.3 |
} |
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catch(NullPointerException success) { |
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} |
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} |
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1.5 |
/** |
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1.6 |
* isDone is true when a task completes |
59 |
dl |
1.5 |
*/ |
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public void testIsDone() { |
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1.4 |
FutureTask task = new FutureTask( new NoOpCallable()); |
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task.run(); |
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assertTrue(task.isDone()); |
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assertFalse(task.isCancelled()); |
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} |
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1.5 |
/** |
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1.6 |
* reset of a done task succeeds and changes status to not done |
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1.5 |
*/ |
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public void testReset() { |
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1.4 |
MyFutureTask task = new MyFutureTask(new NoOpCallable()); |
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task.run(); |
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assertTrue(task.isDone()); |
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1.6 |
assertTrue(task.reset()); |
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assertFalse(task.isDone()); |
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1.4 |
} |
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1.5 |
/** |
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1.6 |
* Resetting after cancellation fails |
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1.5 |
*/ |
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1.4 |
public void testResetAfterCancel() { |
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MyFutureTask task = new MyFutureTask(new NoOpCallable()); |
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assertTrue(task.cancel(false)); |
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1.1 |
task.run(); |
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assertTrue(task.isDone()); |
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1.4 |
assertTrue(task.isCancelled()); |
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assertFalse(task.reset()); |
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} |
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1.5 |
/** |
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* setDone of new task causes isDone to be true |
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1.5 |
*/ |
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1.4 |
public void testSetDone() { |
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MyFutureTask task = new MyFutureTask(new NoOpCallable()); |
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task.setDone(); |
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assertTrue(task.isDone()); |
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1.1 |
assertFalse(task.isCancelled()); |
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} |
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1.5 |
/** |
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1.6 |
* setCancelled of a new task causes isCancelled to be true |
102 |
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1.5 |
*/ |
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1.4 |
public void testSetCancelled() { |
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MyFutureTask task = new MyFutureTask(new NoOpCallable()); |
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assertTrue(task.cancel(false)); |
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task.setCancelled(); |
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assertTrue(task.isDone()); |
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assertTrue(task.isCancelled()); |
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} |
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1.5 |
/** |
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1.6 |
* setting value gauses get to return it |
113 |
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1.5 |
*/ |
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1.4 |
public void testSet() { |
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MyFutureTask task = new MyFutureTask(new NoOpCallable()); |
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task.set(one); |
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try { |
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assertEquals(task.get(), one); |
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} |
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catch(Exception e) { |
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1.5 |
unexpectedException(); |
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1.4 |
} |
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} |
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1.5 |
/** |
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1.6 |
* setException causes get to throw ExecutionException |
127 |
dl |
1.5 |
*/ |
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1.4 |
public void testSetException() { |
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Exception nse = new NoSuchElementException(); |
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MyFutureTask task = new MyFutureTask(new NoOpCallable()); |
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task.setException(nse); |
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try { |
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Object x = task.get(); |
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1.5 |
shouldThrow(); |
135 |
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1.4 |
} |
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catch(ExecutionException ee) { |
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Throwable cause = ee.getCause(); |
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assertEquals(cause, nse); |
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} |
140 |
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catch(Exception e) { |
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1.5 |
unexpectedException(); |
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1.4 |
} |
143 |
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} |
144 |
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145 |
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1.5 |
/** |
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* Cancelling before running succeeds |
147 |
dl |
1.5 |
*/ |
148 |
dl |
1.1 |
public void testCancelBeforeRun() { |
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1.4 |
FutureTask task = new FutureTask( new NoOpCallable()); |
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1.1 |
assertTrue(task.cancel(false)); |
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task.run(); |
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assertTrue(task.isDone()); |
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assertTrue(task.isCancelled()); |
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} |
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156 |
dl |
1.5 |
/** |
157 |
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1.6 |
* Cancel(true) before run succeeds |
158 |
dl |
1.5 |
*/ |
159 |
dl |
1.1 |
public void testCancelBeforeRun2() { |
160 |
dl |
1.4 |
FutureTask task = new FutureTask( new NoOpCallable()); |
161 |
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1.1 |
assertTrue(task.cancel(true)); |
162 |
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task.run(); |
163 |
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assertTrue(task.isDone()); |
164 |
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assertTrue(task.isCancelled()); |
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} |
166 |
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167 |
dl |
1.5 |
/** |
168 |
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1.6 |
* cancel of a completed task fails |
169 |
dl |
1.5 |
*/ |
170 |
dl |
1.1 |
public void testCancelAfterRun() { |
171 |
dl |
1.4 |
FutureTask task = new FutureTask( new NoOpCallable()); |
172 |
dl |
1.1 |
task.run(); |
173 |
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assertFalse(task.cancel(false)); |
174 |
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assertTrue(task.isDone()); |
175 |
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assertFalse(task.isCancelled()); |
176 |
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} |
177 |
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178 |
dl |
1.5 |
/** |
179 |
dl |
1.6 |
* cancel(true) interrupts a running task |
180 |
dl |
1.5 |
*/ |
181 |
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public void testCancelInterrupt() { |
182 |
dl |
1.1 |
FutureTask task = new FutureTask( new Callable() { |
183 |
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public Object call() { |
184 |
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try { |
185 |
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1.4 |
Thread.sleep(MEDIUM_DELAY_MS); |
186 |
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1.5 |
threadShouldThrow(); |
187 |
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1.1 |
} |
188 |
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catch (InterruptedException success) {} |
189 |
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return Boolean.TRUE; |
190 |
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} }); |
191 |
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Thread t = new Thread(task); |
192 |
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t.start(); |
193 |
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194 |
dl |
1.5 |
try { |
195 |
dl |
1.1 |
Thread.sleep(SHORT_DELAY_MS); |
196 |
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assertTrue(task.cancel(true)); |
197 |
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t.join(); |
198 |
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assertTrue(task.isDone()); |
199 |
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assertTrue(task.isCancelled()); |
200 |
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} catch(InterruptedException e){ |
201 |
dl |
1.5 |
unexpectedException(); |
202 |
dl |
1.1 |
} |
203 |
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} |
204 |
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205 |
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206 |
dl |
1.5 |
/** |
207 |
dl |
1.6 |
* cancel(false) does not interrupt a running task |
208 |
dl |
1.5 |
*/ |
209 |
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public void testCancelNoInterrupt() { |
210 |
dl |
1.1 |
FutureTask task = new FutureTask( new Callable() { |
211 |
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public Object call() { |
212 |
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try { |
213 |
dl |
1.4 |
Thread.sleep(MEDIUM_DELAY_MS); |
214 |
dl |
1.1 |
} |
215 |
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catch (InterruptedException success) { |
216 |
dl |
1.4 |
threadFail("should not interrupt"); |
217 |
dl |
1.1 |
} |
218 |
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return Boolean.TRUE; |
219 |
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} }); |
220 |
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Thread t = new Thread(task); |
221 |
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t.start(); |
222 |
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223 |
dl |
1.5 |
try { |
224 |
dl |
1.1 |
Thread.sleep(SHORT_DELAY_MS); |
225 |
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assertTrue(task.cancel(false)); |
226 |
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t.join(); |
227 |
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assertTrue(task.isDone()); |
228 |
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assertTrue(task.isCancelled()); |
229 |
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} catch(InterruptedException e){ |
230 |
dl |
1.5 |
unexpectedException(); |
231 |
dl |
1.1 |
} |
232 |
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} |
233 |
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|
234 |
dl |
1.5 |
/** |
235 |
dl |
1.6 |
* set in one thread causes get in another thread to retrieve value |
236 |
dl |
1.5 |
*/ |
237 |
dl |
1.1 |
public void testGet1() { |
238 |
dl |
1.5 |
final FutureTask ft = new FutureTask(new Callable() { |
239 |
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public Object call() { |
240 |
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try { |
241 |
dl |
1.1 |
Thread.sleep(MEDIUM_DELAY_MS); |
242 |
dl |
1.2 |
} catch(InterruptedException e){ |
243 |
dl |
1.5 |
threadUnexpectedException(); |
244 |
dl |
1.1 |
} |
245 |
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return Boolean.TRUE; |
246 |
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} |
247 |
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}); |
248 |
dl |
1.5 |
Thread t = new Thread(new Runnable() { |
249 |
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public void run() { |
250 |
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try { |
251 |
dl |
1.1 |
ft.get(); |
252 |
dl |
1.2 |
} catch(Exception e){ |
253 |
dl |
1.5 |
threadUnexpectedException(); |
254 |
dl |
1.1 |
} |
255 |
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} |
256 |
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}); |
257 |
dl |
1.5 |
try { |
258 |
dl |
1.1 |
assertFalse(ft.isDone()); |
259 |
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assertFalse(ft.isCancelled()); |
260 |
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t.start(); |
261 |
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Thread.sleep(SHORT_DELAY_MS); |
262 |
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ft.run(); |
263 |
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t.join(); |
264 |
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assertTrue(ft.isDone()); |
265 |
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assertFalse(ft.isCancelled()); |
266 |
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} catch(InterruptedException e){ |
267 |
dl |
1.5 |
unexpectedException(); |
268 |
dl |
1.1 |
|
269 |
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} |
270 |
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} |
271 |
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|
272 |
dl |
1.5 |
/** |
273 |
dl |
1.6 |
* set in one thread causes timed get in another thread to retrieve value |
274 |
dl |
1.5 |
*/ |
275 |
dl |
1.1 |
public void testTimedGet1() { |
276 |
dl |
1.5 |
final FutureTask ft = new FutureTask(new Callable() { |
277 |
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public Object call() { |
278 |
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try { |
279 |
dl |
1.1 |
Thread.sleep(MEDIUM_DELAY_MS); |
280 |
dl |
1.2 |
} catch(InterruptedException e){ |
281 |
dl |
1.5 |
threadUnexpectedException(); |
282 |
dl |
1.1 |
} |
283 |
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return Boolean.TRUE; |
284 |
|
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} |
285 |
|
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}); |
286 |
dl |
1.5 |
Thread t = new Thread(new Runnable() { |
287 |
|
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public void run() { |
288 |
|
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try { |
289 |
dl |
1.1 |
ft.get(SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
290 |
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} catch(TimeoutException success) { |
291 |
|
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} catch(Exception e){ |
292 |
dl |
1.5 |
threadUnexpectedException(); |
293 |
dl |
1.1 |
} |
294 |
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} |
295 |
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}); |
296 |
dl |
1.5 |
try { |
297 |
dl |
1.1 |
assertFalse(ft.isDone()); |
298 |
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assertFalse(ft.isCancelled()); |
299 |
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t.start(); |
300 |
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ft.run(); |
301 |
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t.join(); |
302 |
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assertTrue(ft.isDone()); |
303 |
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assertFalse(ft.isCancelled()); |
304 |
|
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} catch(InterruptedException e){ |
305 |
dl |
1.5 |
unexpectedException(); |
306 |
dl |
1.1 |
|
307 |
|
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} |
308 |
|
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} |
309 |
|
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|
310 |
dl |
1.5 |
/** |
311 |
dl |
1.6 |
* Cancelling a task causes timed get in another thread to throw CancellationException |
312 |
dl |
1.5 |
*/ |
313 |
dl |
1.6 |
public void testTimedGet_Cancellation() { |
314 |
dl |
1.5 |
final FutureTask ft = new FutureTask(new Callable() { |
315 |
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public Object call() { |
316 |
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try { |
317 |
dl |
1.6 |
Thread.sleep(SMALL_DELAY_MS); |
318 |
|
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threadShouldThrow(); |
319 |
|
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} catch(InterruptedException e) { |
320 |
dl |
1.1 |
} |
321 |
dl |
1.6 |
return Boolean.TRUE; |
322 |
dl |
1.1 |
} |
323 |
|
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}); |
324 |
|
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try { |
325 |
dl |
1.6 |
Thread t1 = new Thread(new Runnable() { |
326 |
dl |
1.5 |
public void run() { |
327 |
|
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try { |
328 |
dl |
1.6 |
ft.get(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
329 |
dl |
1.5 |
threadShouldThrow(); |
330 |
dl |
1.6 |
} catch(CancellationException success) {} |
331 |
dl |
1.1 |
catch(Exception e){ |
332 |
dl |
1.5 |
threadUnexpectedException(); |
333 |
dl |
1.6 |
} |
334 |
dl |
1.1 |
} |
335 |
|
|
}); |
336 |
dl |
1.6 |
Thread t2 = new Thread(ft); |
337 |
|
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t1.start(); |
338 |
|
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t2.start(); |
339 |
|
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Thread.sleep(SHORT_DELAY_MS); |
340 |
dl |
1.1 |
ft.cancel(true); |
341 |
dl |
1.6 |
t1.join(); |
342 |
|
|
t2.join(); |
343 |
|
|
} catch(InterruptedException ie){ |
344 |
dl |
1.5 |
unexpectedException(); |
345 |
dl |
1.1 |
} |
346 |
|
|
} |
347 |
dl |
1.6 |
|
348 |
dl |
1.5 |
/** |
349 |
dl |
1.6 |
* Cancelling a task causes get in another thread to throw CancellationException |
350 |
dl |
1.5 |
*/ |
351 |
dl |
1.6 |
public void testGet_Cancellation() { |
352 |
dl |
1.5 |
final FutureTask ft = new FutureTask(new Callable() { |
353 |
|
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public Object call() { |
354 |
|
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try { |
355 |
dl |
1.6 |
Thread.sleep(MEDIUM_DELAY_MS); |
356 |
|
|
threadShouldThrow(); |
357 |
|
|
} catch(InterruptedException e){ |
358 |
dl |
1.1 |
} |
359 |
dl |
1.6 |
return Boolean.TRUE; |
360 |
dl |
1.1 |
} |
361 |
|
|
}); |
362 |
dl |
1.5 |
try { |
363 |
dl |
1.6 |
Thread t1 = new Thread(new Runnable() { |
364 |
dl |
1.5 |
public void run() { |
365 |
|
|
try { |
366 |
dl |
1.6 |
ft.get(); |
367 |
dl |
1.5 |
threadShouldThrow(); |
368 |
dl |
1.6 |
} catch(CancellationException success){ |
369 |
|
|
} |
370 |
dl |
1.1 |
catch(Exception e){ |
371 |
dl |
1.5 |
threadUnexpectedException(); |
372 |
dl |
1.6 |
} |
373 |
dl |
1.1 |
} |
374 |
|
|
}); |
375 |
dl |
1.6 |
Thread t2 = new Thread(ft); |
376 |
|
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t1.start(); |
377 |
|
|
t2.start(); |
378 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
379 |
dl |
1.1 |
ft.cancel(true); |
380 |
dl |
1.6 |
t1.join(); |
381 |
|
|
t2.join(); |
382 |
|
|
} catch(InterruptedException success){ |
383 |
dl |
1.5 |
unexpectedException(); |
384 |
dl |
1.1 |
} |
385 |
|
|
} |
386 |
dl |
1.6 |
|
387 |
dl |
1.1 |
|
388 |
dl |
1.5 |
/** |
389 |
dl |
1.6 |
* A runtime exception in task causes get to throw ExecutionException |
390 |
dl |
1.5 |
*/ |
391 |
|
|
public void testGet_ExecutionException() { |
392 |
|
|
final FutureTask ft = new FutureTask(new Callable() { |
393 |
|
|
public Object call() { |
394 |
dl |
1.1 |
int i = 5/0; |
395 |
|
|
return Boolean.TRUE; |
396 |
|
|
} |
397 |
|
|
}); |
398 |
dl |
1.5 |
try { |
399 |
dl |
1.1 |
ft.run(); |
400 |
|
|
ft.get(); |
401 |
dl |
1.5 |
shouldThrow(); |
402 |
dl |
1.2 |
} catch(ExecutionException success){ |
403 |
dl |
1.1 |
} |
404 |
|
|
catch(Exception e){ |
405 |
dl |
1.5 |
unexpectedException(); |
406 |
dl |
1.1 |
} |
407 |
|
|
} |
408 |
|
|
|
409 |
dl |
1.5 |
/** |
410 |
dl |
1.6 |
* A runtime exception in task causes timed get to throw ExecutionException |
411 |
dl |
1.5 |
*/ |
412 |
|
|
public void testTimedGet_ExecutionException2() { |
413 |
|
|
final FutureTask ft = new FutureTask(new Callable() { |
414 |
|
|
public Object call() { |
415 |
dl |
1.1 |
int i = 5/0; |
416 |
|
|
return Boolean.TRUE; |
417 |
|
|
} |
418 |
|
|
}); |
419 |
dl |
1.5 |
try { |
420 |
dl |
1.1 |
ft.run(); |
421 |
|
|
ft.get(SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
422 |
dl |
1.5 |
shouldThrow(); |
423 |
dl |
1.2 |
} catch(ExecutionException success) { |
424 |
|
|
} catch(TimeoutException success) { } // unlikely but OK |
425 |
dl |
1.1 |
catch(Exception e){ |
426 |
dl |
1.5 |
unexpectedException(); |
427 |
dl |
1.1 |
} |
428 |
|
|
} |
429 |
|
|
|
430 |
|
|
|
431 |
dl |
1.5 |
/** |
432 |
dl |
1.6 |
* Interrupting a waiting get causes it to throw InterruptedException |
433 |
dl |
1.5 |
*/ |
434 |
|
|
public void testGet_InterruptedException() { |
435 |
dl |
1.4 |
final FutureTask ft = new FutureTask(new NoOpCallable()); |
436 |
dl |
1.5 |
Thread t = new Thread(new Runnable() { |
437 |
|
|
public void run() { |
438 |
|
|
try { |
439 |
dl |
1.1 |
ft.get(); |
440 |
dl |
1.5 |
threadShouldThrow(); |
441 |
dl |
1.1 |
} catch(InterruptedException success){ |
442 |
|
|
} catch(Exception e){ |
443 |
dl |
1.5 |
threadUnexpectedException(); |
444 |
dl |
1.1 |
} |
445 |
|
|
} |
446 |
|
|
}); |
447 |
|
|
try { |
448 |
|
|
t.start(); |
449 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
450 |
|
|
t.interrupt(); |
451 |
|
|
t.join(); |
452 |
|
|
} catch(Exception e){ |
453 |
dl |
1.5 |
unexpectedException(); |
454 |
dl |
1.1 |
} |
455 |
|
|
} |
456 |
|
|
|
457 |
dl |
1.5 |
/** |
458 |
dl |
1.6 |
* Interrupting a waiting timed get causes it to throw InterruptedException |
459 |
dl |
1.5 |
*/ |
460 |
|
|
public void testTimedGet_InterruptedException2() { |
461 |
dl |
1.4 |
final FutureTask ft = new FutureTask(new NoOpCallable()); |
462 |
dl |
1.5 |
Thread t = new Thread(new Runnable() { |
463 |
|
|
public void run() { |
464 |
|
|
try { |
465 |
dl |
1.4 |
ft.get(LONG_DELAY_MS,TimeUnit.MILLISECONDS); |
466 |
dl |
1.5 |
threadShouldThrow(); |
467 |
dl |
1.2 |
} catch(InterruptedException success){} |
468 |
dl |
1.1 |
catch(Exception e){ |
469 |
dl |
1.5 |
threadUnexpectedException(); |
470 |
dl |
1.1 |
} |
471 |
|
|
} |
472 |
|
|
}); |
473 |
|
|
try { |
474 |
|
|
t.start(); |
475 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
476 |
|
|
t.interrupt(); |
477 |
|
|
t.join(); |
478 |
|
|
} catch(Exception e){ |
479 |
dl |
1.5 |
unexpectedException(); |
480 |
dl |
1.1 |
} |
481 |
|
|
} |
482 |
|
|
|
483 |
dl |
1.5 |
/** |
484 |
dl |
1.6 |
* A timed out timed get throws TimeoutException |
485 |
dl |
1.5 |
*/ |
486 |
|
|
public void testGet_TimeoutException() { |
487 |
|
|
try { |
488 |
dl |
1.4 |
FutureTask ft = new FutureTask(new NoOpCallable()); |
489 |
dl |
1.1 |
ft.get(1,TimeUnit.MILLISECONDS); |
490 |
dl |
1.5 |
shouldThrow(); |
491 |
dl |
1.2 |
} catch(TimeoutException success){} |
492 |
|
|
catch(Exception success){ |
493 |
dl |
1.5 |
unexpectedException(); |
494 |
dl |
1.1 |
} |
495 |
|
|
} |
496 |
|
|
|
497 |
|
|
} |