1 |
/* |
2 |
* Written by Doug Lea with assistance from members of JCP JSR-166 |
3 |
* Expert Group and released to the public domain, as explained at |
4 |
* http://creativecommons.org/publicdomain/zero/1.0/ |
5 |
* Other contributors include Andrew Wright, Jeffrey Hayes, |
6 |
* Pat Fisher, Mike Judd. |
7 |
*/ |
8 |
|
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
10 |
|
11 |
import java.security.PrivilegedAction; |
12 |
import java.security.PrivilegedExceptionAction; |
13 |
import java.util.ArrayList; |
14 |
import java.util.Collections; |
15 |
import java.util.List; |
16 |
import java.util.concurrent.AbstractExecutorService; |
17 |
import java.util.concurrent.ArrayBlockingQueue; |
18 |
import java.util.concurrent.Callable; |
19 |
import java.util.concurrent.CountDownLatch; |
20 |
import java.util.concurrent.ExecutionException; |
21 |
import java.util.concurrent.Executors; |
22 |
import java.util.concurrent.ExecutorService; |
23 |
import java.util.concurrent.Future; |
24 |
import java.util.concurrent.ThreadPoolExecutor; |
25 |
import java.util.concurrent.TimeUnit; |
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import java.util.concurrent.atomic.AtomicBoolean; |
27 |
|
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import junit.framework.Test; |
29 |
import junit.framework.TestSuite; |
30 |
|
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public class AbstractExecutorServiceTest extends JSR166TestCase { |
32 |
public static void main(String[] args) { |
33 |
junit.textui.TestRunner.run(suite()); |
34 |
} |
35 |
public static Test suite() { |
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return new TestSuite(AbstractExecutorServiceTest.class); |
37 |
} |
38 |
|
39 |
/** |
40 |
* A no-frills implementation of AbstractExecutorService, designed |
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* to test the submit methods only. |
42 |
*/ |
43 |
static class DirectExecutorService extends AbstractExecutorService { |
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public void execute(Runnable r) { r.run(); } |
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public void shutdown() { shutdown = true; } |
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public List<Runnable> shutdownNow() { |
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shutdown = true; |
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return Collections.EMPTY_LIST; |
49 |
} |
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public boolean isShutdown() { return shutdown; } |
51 |
public boolean isTerminated() { return isShutdown(); } |
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public boolean awaitTermination(long timeout, TimeUnit unit) { |
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return isShutdown(); |
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} |
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private volatile boolean shutdown = false; |
56 |
} |
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|
58 |
/** |
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* execute(runnable) runs it to completion |
60 |
*/ |
61 |
public void testExecuteRunnable() throws Exception { |
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ExecutorService e = new DirectExecutorService(); |
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final AtomicBoolean done = new AtomicBoolean(false); |
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Future<?> future = e.submit(new CheckedRunnable() { |
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public void realRun() { |
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done.set(true); |
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}}); |
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assertNull(future.get()); |
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assertNull(future.get(0, MILLISECONDS)); |
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assertTrue(done.get()); |
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assertTrue(future.isDone()); |
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assertFalse(future.isCancelled()); |
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} |
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|
75 |
/** |
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* Completed submit(callable) returns result |
77 |
*/ |
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public void testSubmitCallable() throws Exception { |
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ExecutorService e = new DirectExecutorService(); |
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Future<String> future = e.submit(new StringTask()); |
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String result = future.get(); |
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assertSame(TEST_STRING, result); |
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} |
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|
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/** |
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* Completed submit(runnable) returns successfully |
87 |
*/ |
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public void testSubmitRunnable() throws Exception { |
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ExecutorService e = new DirectExecutorService(); |
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Future<?> future = e.submit(new NoOpRunnable()); |
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future.get(); |
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assertTrue(future.isDone()); |
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} |
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|
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/** |
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* Completed submit(runnable, result) returns result |
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*/ |
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public void testSubmitRunnable2() throws Exception { |
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ExecutorService e = new DirectExecutorService(); |
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Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING); |
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String result = future.get(); |
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assertSame(TEST_STRING, result); |
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} |
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|
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/** |
106 |
* A submitted privileged action runs to completion |
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*/ |
108 |
public void testSubmitPrivilegedAction() throws Exception { |
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Runnable r = new CheckedRunnable() { |
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public void realRun() throws Exception { |
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ExecutorService e = new DirectExecutorService(); |
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Future future = e.submit(Executors.callable(new PrivilegedAction() { |
113 |
public Object run() { |
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return TEST_STRING; |
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}})); |
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|
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assertSame(TEST_STRING, future.get()); |
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}}; |
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|
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runWithPermissions(r, |
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new RuntimePermission("getClassLoader"), |
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new RuntimePermission("setContextClassLoader"), |
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new RuntimePermission("modifyThread")); |
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} |
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|
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/** |
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* A submitted privileged exception action runs to completion |
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*/ |
129 |
public void testSubmitPrivilegedExceptionAction() throws Exception { |
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Runnable r = new CheckedRunnable() { |
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public void realRun() throws Exception { |
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ExecutorService e = new DirectExecutorService(); |
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Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
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public Object run() { |
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return TEST_STRING; |
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}})); |
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|
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assertSame(TEST_STRING, future.get()); |
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}}; |
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|
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runWithPermissions(r); |
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} |
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|
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/** |
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* A submitted failed privileged exception action reports exception |
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*/ |
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public void testSubmitFailedPrivilegedExceptionAction() throws Exception { |
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Runnable r = new CheckedRunnable() { |
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public void realRun() throws Exception { |
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ExecutorService e = new DirectExecutorService(); |
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Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
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public Object run() throws Exception { |
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throw new IndexOutOfBoundsException(); |
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}})); |
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|
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try { |
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future.get(); |
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shouldThrow(); |
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} catch (ExecutionException success) { |
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assertTrue(success.getCause() instanceof IndexOutOfBoundsException); |
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}}}; |
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|
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runWithPermissions(r); |
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} |
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|
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/** |
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* execute(null runnable) throws NPE |
168 |
*/ |
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public void testExecuteNullRunnable() { |
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try { |
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ExecutorService e = new DirectExecutorService(); |
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e.submit((Runnable) null); |
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shouldThrow(); |
174 |
} catch (NullPointerException success) {} |
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} |
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|
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/** |
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* submit(null callable) throws NPE |
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*/ |
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public void testSubmitNullCallable() { |
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try { |
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ExecutorService e = new DirectExecutorService(); |
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e.submit((Callable) null); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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|
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/** |
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* submit(callable).get() throws InterruptedException if interrupted |
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*/ |
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public void testInterruptedSubmit() throws InterruptedException { |
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final CountDownLatch submitted = new CountDownLatch(1); |
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final CountDownLatch quittingTime = new CountDownLatch(1); |
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final ExecutorService p |
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= new ThreadPoolExecutor(1,1,60, TimeUnit.SECONDS, |
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new ArrayBlockingQueue<Runnable>(10)); |
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final Callable<Void> awaiter = new CheckedCallable<Void>() { |
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public Void realCall() throws InterruptedException { |
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quittingTime.await(); |
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return null; |
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}}; |
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try { |
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Thread t = new Thread(new CheckedInterruptedRunnable() { |
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public void realRun() throws Exception { |
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Future<Void> future = p.submit(awaiter); |
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submitted.countDown(); |
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future.get(); |
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}}); |
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t.start(); |
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submitted.await(); |
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t.interrupt(); |
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t.join(); |
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} finally { |
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quittingTime.countDown(); |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* get of submit(callable) throws ExecutionException if callable |
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* throws exception |
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*/ |
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public void testSubmitEE() throws InterruptedException { |
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ThreadPoolExecutor p = |
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new ThreadPoolExecutor(1, 1, |
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60, TimeUnit.SECONDS, |
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new ArrayBlockingQueue<Runnable>(10)); |
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|
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Callable c = new Callable() { |
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public Object call() { throw new ArithmeticException(); }}; |
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|
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try { |
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p.submit(c).get(); |
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shouldThrow(); |
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} catch (ExecutionException success) { |
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assertTrue(success.getCause() instanceof ArithmeticException); |
237 |
} |
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joinPool(p); |
239 |
} |
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|
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/** |
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* invokeAny(null) throws NPE |
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*/ |
244 |
public void testInvokeAny1() throws Exception { |
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ExecutorService e = new DirectExecutorService(); |
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try { |
247 |
e.invokeAny(null); |
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shouldThrow(); |
249 |
} catch (NullPointerException success) { |
250 |
} finally { |
251 |
joinPool(e); |
252 |
} |
253 |
} |
254 |
|
255 |
/** |
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* invokeAny(empty collection) throws IAE |
257 |
*/ |
258 |
public void testInvokeAny2() throws Exception { |
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ExecutorService e = new DirectExecutorService(); |
260 |
try { |
261 |
e.invokeAny(new ArrayList<Callable<String>>()); |
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shouldThrow(); |
263 |
} catch (IllegalArgumentException success) { |
264 |
} finally { |
265 |
joinPool(e); |
266 |
} |
267 |
} |
268 |
|
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/** |
270 |
* invokeAny(c) throws NPE if c has null elements |
271 |
*/ |
272 |
public void testInvokeAny3() throws Exception { |
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ExecutorService e = new DirectExecutorService(); |
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List<Callable<Long>> l = new ArrayList<Callable<Long>>(); |
275 |
l.add(new Callable<Long>() { |
276 |
public Long call() { throw new ArithmeticException(); }}); |
277 |
l.add(null); |
278 |
try { |
279 |
e.invokeAny(l); |
280 |
shouldThrow(); |
281 |
} catch (NullPointerException success) { |
282 |
} finally { |
283 |
joinPool(e); |
284 |
} |
285 |
} |
286 |
|
287 |
/** |
288 |
* invokeAny(c) throws ExecutionException if no task in c completes |
289 |
*/ |
290 |
public void testInvokeAny4() throws InterruptedException { |
291 |
ExecutorService e = new DirectExecutorService(); |
292 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
293 |
l.add(new NPETask()); |
294 |
try { |
295 |
e.invokeAny(l); |
296 |
shouldThrow(); |
297 |
} catch (ExecutionException success) { |
298 |
assertTrue(success.getCause() instanceof NullPointerException); |
299 |
} finally { |
300 |
joinPool(e); |
301 |
} |
302 |
} |
303 |
|
304 |
/** |
305 |
* invokeAny(c) returns result of some task in c if at least one completes |
306 |
*/ |
307 |
public void testInvokeAny5() throws Exception { |
308 |
ExecutorService e = new DirectExecutorService(); |
309 |
try { |
310 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
311 |
l.add(new StringTask()); |
312 |
l.add(new StringTask()); |
313 |
String result = e.invokeAny(l); |
314 |
assertSame(TEST_STRING, result); |
315 |
} finally { |
316 |
joinPool(e); |
317 |
} |
318 |
} |
319 |
|
320 |
/** |
321 |
* invokeAll(null) throws NPE |
322 |
*/ |
323 |
public void testInvokeAll1() throws InterruptedException { |
324 |
ExecutorService e = new DirectExecutorService(); |
325 |
try { |
326 |
e.invokeAll(null); |
327 |
shouldThrow(); |
328 |
} catch (NullPointerException success) { |
329 |
} finally { |
330 |
joinPool(e); |
331 |
} |
332 |
} |
333 |
|
334 |
/** |
335 |
* invokeAll(empty collection) returns empty collection |
336 |
*/ |
337 |
public void testInvokeAll2() throws InterruptedException { |
338 |
ExecutorService e = new DirectExecutorService(); |
339 |
try { |
340 |
List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>()); |
341 |
assertTrue(r.isEmpty()); |
342 |
} finally { |
343 |
joinPool(e); |
344 |
} |
345 |
} |
346 |
|
347 |
/** |
348 |
* invokeAll(c) throws NPE if c has null elements |
349 |
*/ |
350 |
public void testInvokeAll3() throws InterruptedException { |
351 |
ExecutorService e = new DirectExecutorService(); |
352 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
353 |
l.add(new StringTask()); |
354 |
l.add(null); |
355 |
try { |
356 |
e.invokeAll(l); |
357 |
shouldThrow(); |
358 |
} catch (NullPointerException success) { |
359 |
} finally { |
360 |
joinPool(e); |
361 |
} |
362 |
} |
363 |
|
364 |
/** |
365 |
* get of returned element of invokeAll(c) throws exception on failed task |
366 |
*/ |
367 |
public void testInvokeAll4() throws Exception { |
368 |
ExecutorService e = new DirectExecutorService(); |
369 |
try { |
370 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
371 |
l.add(new NPETask()); |
372 |
List<Future<String>> futures = e.invokeAll(l); |
373 |
assertEquals(1, futures.size()); |
374 |
try { |
375 |
futures.get(0).get(); |
376 |
shouldThrow(); |
377 |
} catch (ExecutionException success) { |
378 |
assertTrue(success.getCause() instanceof NullPointerException); |
379 |
} |
380 |
} finally { |
381 |
joinPool(e); |
382 |
} |
383 |
} |
384 |
|
385 |
/** |
386 |
* invokeAll(c) returns results of all completed tasks in c |
387 |
*/ |
388 |
public void testInvokeAll5() throws Exception { |
389 |
ExecutorService e = new DirectExecutorService(); |
390 |
try { |
391 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
392 |
l.add(new StringTask()); |
393 |
l.add(new StringTask()); |
394 |
List<Future<String>> futures = e.invokeAll(l); |
395 |
assertEquals(2, futures.size()); |
396 |
for (Future<String> future : futures) |
397 |
assertSame(TEST_STRING, future.get()); |
398 |
} finally { |
399 |
joinPool(e); |
400 |
} |
401 |
} |
402 |
|
403 |
/** |
404 |
* timed invokeAny(null) throws NPE |
405 |
*/ |
406 |
public void testTimedInvokeAny1() throws Exception { |
407 |
ExecutorService e = new DirectExecutorService(); |
408 |
try { |
409 |
e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS); |
410 |
shouldThrow(); |
411 |
} catch (NullPointerException success) { |
412 |
} finally { |
413 |
joinPool(e); |
414 |
} |
415 |
} |
416 |
|
417 |
/** |
418 |
* timed invokeAny(null time unit) throws NPE |
419 |
*/ |
420 |
public void testTimedInvokeAnyNullTimeUnit() throws Exception { |
421 |
ExecutorService e = new DirectExecutorService(); |
422 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
423 |
l.add(new StringTask()); |
424 |
try { |
425 |
e.invokeAny(l, MEDIUM_DELAY_MS, null); |
426 |
shouldThrow(); |
427 |
} catch (NullPointerException success) { |
428 |
} finally { |
429 |
joinPool(e); |
430 |
} |
431 |
} |
432 |
|
433 |
/** |
434 |
* timed invokeAny(empty collection) throws IAE |
435 |
*/ |
436 |
public void testTimedInvokeAny2() throws Exception { |
437 |
ExecutorService e = new DirectExecutorService(); |
438 |
try { |
439 |
e.invokeAny(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, MILLISECONDS); |
440 |
shouldThrow(); |
441 |
} catch (IllegalArgumentException success) { |
442 |
} finally { |
443 |
joinPool(e); |
444 |
} |
445 |
} |
446 |
|
447 |
/** |
448 |
* timed invokeAny(c) throws NPE if c has null elements |
449 |
*/ |
450 |
public void testTimedInvokeAny3() throws Exception { |
451 |
ExecutorService e = new DirectExecutorService(); |
452 |
List<Callable<Long>> l = new ArrayList<Callable<Long>>(); |
453 |
l.add(new Callable<Long>() { |
454 |
public Long call() { throw new ArithmeticException(); }}); |
455 |
l.add(null); |
456 |
try { |
457 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
458 |
shouldThrow(); |
459 |
} catch (NullPointerException success) { |
460 |
} finally { |
461 |
joinPool(e); |
462 |
} |
463 |
} |
464 |
|
465 |
/** |
466 |
* timed invokeAny(c) throws ExecutionException if no task completes |
467 |
*/ |
468 |
public void testTimedInvokeAny4() throws Exception { |
469 |
ExecutorService e = new DirectExecutorService(); |
470 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
471 |
l.add(new NPETask()); |
472 |
try { |
473 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
474 |
shouldThrow(); |
475 |
} catch (ExecutionException success) { |
476 |
assertTrue(success.getCause() instanceof NullPointerException); |
477 |
} finally { |
478 |
joinPool(e); |
479 |
} |
480 |
} |
481 |
|
482 |
/** |
483 |
* timed invokeAny(c) returns result of some task in c |
484 |
*/ |
485 |
public void testTimedInvokeAny5() throws Exception { |
486 |
ExecutorService e = new DirectExecutorService(); |
487 |
try { |
488 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
489 |
l.add(new StringTask()); |
490 |
l.add(new StringTask()); |
491 |
String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
492 |
assertSame(TEST_STRING, result); |
493 |
} finally { |
494 |
joinPool(e); |
495 |
} |
496 |
} |
497 |
|
498 |
/** |
499 |
* timed invokeAll(null) throws NPE |
500 |
*/ |
501 |
public void testTimedInvokeAll1() throws InterruptedException { |
502 |
ExecutorService e = new DirectExecutorService(); |
503 |
try { |
504 |
e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS); |
505 |
shouldThrow(); |
506 |
} catch (NullPointerException success) { |
507 |
} finally { |
508 |
joinPool(e); |
509 |
} |
510 |
} |
511 |
|
512 |
/** |
513 |
* timed invokeAll(null time unit) throws NPE |
514 |
*/ |
515 |
public void testTimedInvokeAllNullTimeUnit() throws InterruptedException { |
516 |
ExecutorService e = new DirectExecutorService(); |
517 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
518 |
l.add(new StringTask()); |
519 |
try { |
520 |
e.invokeAll(l, MEDIUM_DELAY_MS, null); |
521 |
shouldThrow(); |
522 |
} catch (NullPointerException success) { |
523 |
} finally { |
524 |
joinPool(e); |
525 |
} |
526 |
} |
527 |
|
528 |
/** |
529 |
* timed invokeAll(empty collection) returns empty collection |
530 |
*/ |
531 |
public void testTimedInvokeAll2() throws InterruptedException { |
532 |
ExecutorService e = new DirectExecutorService(); |
533 |
try { |
534 |
List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, MILLISECONDS); |
535 |
assertTrue(r.isEmpty()); |
536 |
} finally { |
537 |
joinPool(e); |
538 |
} |
539 |
} |
540 |
|
541 |
/** |
542 |
* timed invokeAll(c) throws NPE if c has null elements |
543 |
*/ |
544 |
public void testTimedInvokeAll3() throws InterruptedException { |
545 |
ExecutorService e = new DirectExecutorService(); |
546 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
547 |
l.add(new StringTask()); |
548 |
l.add(null); |
549 |
try { |
550 |
e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
551 |
shouldThrow(); |
552 |
} catch (NullPointerException success) { |
553 |
} finally { |
554 |
joinPool(e); |
555 |
} |
556 |
} |
557 |
|
558 |
/** |
559 |
* get of returned element of invokeAll(c) throws exception on failed task |
560 |
*/ |
561 |
public void testTimedInvokeAll4() throws Exception { |
562 |
ExecutorService e = new DirectExecutorService(); |
563 |
try { |
564 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
565 |
l.add(new NPETask()); |
566 |
List<Future<String>> futures = |
567 |
e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
568 |
assertEquals(1, futures.size()); |
569 |
try { |
570 |
futures.get(0).get(); |
571 |
shouldThrow(); |
572 |
} catch (ExecutionException success) { |
573 |
assertTrue(success.getCause() instanceof NullPointerException); |
574 |
} |
575 |
} finally { |
576 |
joinPool(e); |
577 |
} |
578 |
} |
579 |
|
580 |
/** |
581 |
* timed invokeAll(c) returns results of all completed tasks in c |
582 |
*/ |
583 |
public void testTimedInvokeAll5() throws Exception { |
584 |
ExecutorService e = new DirectExecutorService(); |
585 |
try { |
586 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
587 |
l.add(new StringTask()); |
588 |
l.add(new StringTask()); |
589 |
List<Future<String>> futures = |
590 |
e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
591 |
assertEquals(2, futures.size()); |
592 |
for (Future<String> future : futures) |
593 |
assertSame(TEST_STRING, future.get()); |
594 |
} finally { |
595 |
joinPool(e); |
596 |
} |
597 |
} |
598 |
|
599 |
/** |
600 |
* timed invokeAll cancels tasks not completed by timeout |
601 |
*/ |
602 |
public void testTimedInvokeAll6() throws InterruptedException { |
603 |
ExecutorService e = new DirectExecutorService(); |
604 |
try { |
605 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
606 |
l.add(new StringTask()); |
607 |
l.add(Executors.callable(possiblyInterruptedRunnable(2 * SHORT_DELAY_MS), TEST_STRING)); |
608 |
l.add(new StringTask()); |
609 |
List<Future<String>> futures = |
610 |
e.invokeAll(l, SHORT_DELAY_MS, MILLISECONDS); |
611 |
assertEquals(l.size(), futures.size()); |
612 |
for (Future future : futures) |
613 |
assertTrue(future.isDone()); |
614 |
assertFalse(futures.get(0).isCancelled()); |
615 |
assertFalse(futures.get(1).isCancelled()); |
616 |
assertTrue(futures.get(2).isCancelled()); |
617 |
} finally { |
618 |
joinPool(e); |
619 |
} |
620 |
} |
621 |
|
622 |
} |