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dl |
1.1 |
/* |
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dl |
1.2 |
* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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jsr166 |
1.13 |
* http://creativecommons.org/publicdomain/zero/1.0/ |
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jsr166 |
1.7 |
* Other contributors include Andrew Wright, Jeffrey Hayes, |
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* Pat Fisher, Mike Judd. |
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dl |
1.1 |
*/ |
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import junit.framework.*; |
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import java.util.*; |
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import java.util.concurrent.*; |
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jsr166 |
1.9 |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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dl |
1.5 |
import java.util.concurrent.atomic.*; |
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dl |
1.1 |
import java.math.BigInteger; |
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import java.security.*; |
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jsr166 |
1.8 |
public class ExecutorCompletionServiceTest extends JSR166TestCase { |
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dl |
1.1 |
public static void main(String[] args) { |
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jsr166 |
1.11 |
junit.textui.TestRunner.run(suite()); |
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dl |
1.1 |
} |
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public static Test suite() { |
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return new TestSuite(ExecutorCompletionServiceTest.class); |
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} |
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/** |
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* Creating a new ECS with null Executor throw NPE |
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jsr166 |
1.7 |
*/ |
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dl |
1.1 |
public void testConstructorNPE() { |
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try { |
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ExecutorCompletionService ecs = new ExecutorCompletionService(null); |
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shouldThrow(); |
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jsr166 |
1.10 |
} catch (NullPointerException success) {} |
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dl |
1.1 |
} |
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/** |
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* Creating a new ECS with null queue throw NPE |
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jsr166 |
1.7 |
*/ |
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dl |
1.1 |
public void testConstructorNPE2() { |
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try { |
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ExecutorService e = Executors.newCachedThreadPool(); |
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ExecutorCompletionService ecs = new ExecutorCompletionService(e, null); |
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shouldThrow(); |
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jsr166 |
1.10 |
} catch (NullPointerException success) {} |
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dl |
1.1 |
} |
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/** |
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* Submitting a null callable throws NPE |
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jsr166 |
1.7 |
*/ |
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dl |
1.1 |
public void testSubmitNPE() { |
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ExecutorService e = Executors.newCachedThreadPool(); |
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ExecutorCompletionService ecs = new ExecutorCompletionService(e); |
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try { |
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Callable c = null; |
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ecs.submit(c); |
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shouldThrow(); |
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} catch (NullPointerException success) { |
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} finally { |
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joinPool(e); |
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} |
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} |
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/** |
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* Submitting a null runnable throws NPE |
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jsr166 |
1.7 |
*/ |
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dl |
1.1 |
public void testSubmitNPE2() { |
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ExecutorService e = Executors.newCachedThreadPool(); |
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ExecutorCompletionService ecs = new ExecutorCompletionService(e); |
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try { |
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Runnable r = null; |
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ecs.submit(r, Boolean.TRUE); |
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shouldThrow(); |
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} catch (NullPointerException success) { |
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} finally { |
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joinPool(e); |
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} |
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} |
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/** |
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* A taken submitted task is completed |
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jsr166 |
1.7 |
*/ |
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jsr166 |
1.10 |
public void testTake() throws InterruptedException { |
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dl |
1.1 |
ExecutorService e = Executors.newCachedThreadPool(); |
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ExecutorCompletionService ecs = new ExecutorCompletionService(e); |
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try { |
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Callable c = new StringTask(); |
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ecs.submit(c); |
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Future f = ecs.take(); |
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dl |
1.3 |
assertTrue(f.isDone()); |
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dl |
1.1 |
} finally { |
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joinPool(e); |
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} |
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} |
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/** |
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* Take returns the same future object returned by submit |
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jsr166 |
1.7 |
*/ |
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jsr166 |
1.10 |
public void testTake2() throws InterruptedException { |
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dl |
1.1 |
ExecutorService e = Executors.newCachedThreadPool(); |
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ExecutorCompletionService ecs = new ExecutorCompletionService(e); |
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try { |
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Callable c = new StringTask(); |
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Future f1 = ecs.submit(c); |
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Future f2 = ecs.take(); |
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assertSame(f1, f2); |
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} finally { |
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joinPool(e); |
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} |
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} |
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/** |
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* If poll returns non-null, the returned task is completed |
112 |
jsr166 |
1.7 |
*/ |
113 |
jsr166 |
1.10 |
public void testPoll1() throws InterruptedException { |
114 |
dl |
1.1 |
ExecutorService e = Executors.newCachedThreadPool(); |
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ExecutorCompletionService ecs = new ExecutorCompletionService(e); |
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try { |
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assertNull(ecs.poll()); |
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Callable c = new StringTask(); |
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ecs.submit(c); |
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dl |
1.14 |
delay(SHORT_DELAY_MS); |
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dl |
1.1 |
for (;;) { |
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Future f = ecs.poll(); |
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if (f != null) { |
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dl |
1.3 |
assertTrue(f.isDone()); |
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dl |
1.1 |
break; |
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} |
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} |
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} finally { |
129 |
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joinPool(e); |
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} |
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} |
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/** |
134 |
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* If timed poll returns non-null, the returned task is completed |
135 |
jsr166 |
1.7 |
*/ |
136 |
jsr166 |
1.10 |
public void testPoll2() throws InterruptedException { |
137 |
dl |
1.1 |
ExecutorService e = Executors.newCachedThreadPool(); |
138 |
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ExecutorCompletionService ecs = new ExecutorCompletionService(e); |
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try { |
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assertNull(ecs.poll()); |
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Callable c = new StringTask(); |
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ecs.submit(c); |
143 |
jsr166 |
1.9 |
Future f = ecs.poll(SHORT_DELAY_MS, MILLISECONDS); |
144 |
jsr166 |
1.7 |
if (f != null) |
145 |
dl |
1.3 |
assertTrue(f.isDone()); |
146 |
dl |
1.1 |
} finally { |
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joinPool(e); |
148 |
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} |
149 |
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} |
150 |
jsr166 |
1.12 |
|
151 |
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/** |
152 |
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* Submitting to underlying AES that overrides newTaskFor(Callable) |
153 |
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* returns and eventually runs Future returned by newTaskFor. |
154 |
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*/ |
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public void testNewTaskForCallable() throws InterruptedException { |
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final AtomicBoolean done = new AtomicBoolean(false); |
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class MyCallableFuture<V> extends FutureTask<V> { |
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MyCallableFuture(Callable<V> c) { super(c); } |
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protected void done() { done.set(true); } |
160 |
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} |
161 |
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ExecutorService e = new ThreadPoolExecutor( |
162 |
dl |
1.4 |
1, 1, 30L, TimeUnit.SECONDS, |
163 |
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new ArrayBlockingQueue<Runnable>(1)) { |
164 |
jsr166 |
1.12 |
protected <T> RunnableFuture<T> newTaskFor(Callable<T> c) { |
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return new MyCallableFuture<T>(c); |
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}}; |
167 |
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ExecutorCompletionService<String> ecs = |
168 |
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new ExecutorCompletionService<String>(e); |
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try { |
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assertNull(ecs.poll()); |
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Callable<String> c = new StringTask(); |
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Future f1 = ecs.submit(c); |
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assertTrue("submit must return MyCallableFuture", |
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f1 instanceof MyCallableFuture); |
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Future f2 = ecs.take(); |
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assertSame("submit and take must return same objects", f1, f2); |
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assertTrue("completed task must have set done", done.get()); |
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} finally { |
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joinPool(e); |
180 |
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} |
181 |
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} |
182 |
dl |
1.4 |
|
183 |
jsr166 |
1.12 |
/** |
184 |
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* Submitting to underlying AES that overrides newTaskFor(Runnable,T) |
185 |
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* returns and eventually runs Future returned by newTaskFor. |
186 |
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*/ |
187 |
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public void testNewTaskForRunnable() throws InterruptedException { |
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final AtomicBoolean done = new AtomicBoolean(false); |
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class MyRunnableFuture<V> extends FutureTask<V> { |
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MyRunnableFuture(Runnable t, V r) { super(t, r); } |
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protected void done() { done.set(true); } |
192 |
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} |
193 |
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ExecutorService e = new ThreadPoolExecutor( |
194 |
dl |
1.4 |
1, 1, 30L, TimeUnit.SECONDS, |
195 |
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new ArrayBlockingQueue<Runnable>(1)) { |
196 |
jsr166 |
1.12 |
protected <T> RunnableFuture<T> newTaskFor(Runnable t, T r) { |
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return new MyRunnableFuture<T>(t, r); |
198 |
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}}; |
199 |
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ExecutorCompletionService<String> ecs = |
200 |
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new ExecutorCompletionService<String>(e); |
201 |
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try { |
202 |
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assertNull(ecs.poll()); |
203 |
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Runnable r = new NoOpRunnable(); |
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Future f1 = ecs.submit(r, null); |
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assertTrue("submit must return MyRunnableFuture", |
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f1 instanceof MyRunnableFuture); |
207 |
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Future f2 = ecs.take(); |
208 |
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assertSame("submit and take must return same objects", f1, f2); |
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assertTrue("completed task must have set done", done.get()); |
210 |
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} finally { |
211 |
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joinPool(e); |
212 |
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} |
213 |
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} |
214 |
dl |
1.4 |
|
215 |
dl |
1.1 |
} |