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root/jsr166/jsr166/src/test/tck/ExecutorCompletionServiceTest.java

Comparing jsr166/src/test/tck/ExecutorCompletionServiceTest.java (file contents):
Revision 1.2 by dl, Sat Dec 27 19:26:43 2003 UTC vs.
Revision 1.16 by jsr166, Sun May 29 06:50:55 2011 UTC

#	Line 1 | Line 1
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/licenses/publicdomain
5	<	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	<	* Pat Fisher, Mike Judd.
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9	–
9		import junit.framework.*;
10		import java.util.*;
11		import java.util.concurrent.*;
12	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
13	+	import java.util.concurrent.atomic.*;
14		import java.math.BigInteger;
15		import java.security.*;
16
17	<	public class ExecutorCompletionServiceTest extends JSR166TestCase{
17	>	public class ExecutorCompletionServiceTest extends JSR166TestCase {
18		public static void main(String[] args) {
19	<	junit.textui.TestRunner.run (suite());
19	>	junit.textui.TestRunner.run(suite());
20		}
21		public static Test suite() {
22		return new TestSuite(ExecutorCompletionServiceTest.class);
23		}
24
24	–
25		/**
26		* Creating a new ECS with null Executor throw NPE
27	<	*/
27	>	*/
28		public void testConstructorNPE() {
29		try {
30		ExecutorCompletionService ecs = new ExecutorCompletionService(null);
31		shouldThrow();
32	<	} catch (NullPointerException success) {
33	<	}
32	>	} catch (NullPointerException success) {}
33		}
34
35		/**
36		* Creating a new ECS with null queue throw NPE
37	<	*/
37	>	*/
38		public void testConstructorNPE2() {
39		try {
40		ExecutorService e = Executors.newCachedThreadPool();
41		ExecutorCompletionService ecs = new ExecutorCompletionService(e, null);
42		shouldThrow();
43	<	} catch (NullPointerException success) {
45	<	}
43	>	} catch (NullPointerException success) {}
44		}
45
46		/**
47		* Submitting a null callable throws NPE
48	<	*/
48	>	*/
49		public void testSubmitNPE() {
50		ExecutorService e = Executors.newCachedThreadPool();
51		ExecutorCompletionService ecs = new ExecutorCompletionService(e);
#	Line 63 | Line 61 | public class ExecutorCompletionServiceTe
61
62		/**
63		* Submitting a null runnable throws NPE
64	<	*/
64	>	*/
65		public void testSubmitNPE2() {
66		ExecutorService e = Executors.newCachedThreadPool();
67		ExecutorCompletionService ecs = new ExecutorCompletionService(e);
#	Line 79 | Line 77 | public class ExecutorCompletionServiceTe
77
78		/**
79		* A taken submitted task is completed
80	<	*/
81	<	public void testTake() {
80	>	*/
81	>	public void testTake() throws InterruptedException {
82		ExecutorService e = Executors.newCachedThreadPool();
83		ExecutorCompletionService ecs = new ExecutorCompletionService(e);
84		try {
85		Callable c = new StringTask();
86		ecs.submit(c);
87		Future f = ecs.take();
88	<	assert(f.isDone());
91	<	} catch (Exception ex) {
92	<	unexpectedException();
88	>	assertTrue(f.isDone());
89		} finally {
90		joinPool(e);
91		}
#	Line 97 | Line 93 | public class ExecutorCompletionServiceTe
93
94		/**
95		* Take returns the same future object returned by submit
96	<	*/
97	<	public void testTake2() {
96	>	*/
97	>	public void testTake2() throws InterruptedException {
98		ExecutorService e = Executors.newCachedThreadPool();
99		ExecutorCompletionService ecs = new ExecutorCompletionService(e);
100		try {
#	Line 106 | Line 102 | public class ExecutorCompletionServiceTe
102		Future f1 = ecs.submit(c);
103		Future f2 = ecs.take();
104		assertSame(f1, f2);
109	–	} catch (Exception ex) {
110	–	unexpectedException();
105		} finally {
106		joinPool(e);
107		}
#	Line 115 | Line 109 | public class ExecutorCompletionServiceTe
109
110		/**
111		* If poll returns non-null, the returned task is completed
112	<	*/
113	<	public void testPoll1() {
112	>	*/
113	>	public void testPoll1() throws Exception {
114		ExecutorService e = Executors.newCachedThreadPool();
115		ExecutorCompletionService ecs = new ExecutorCompletionService(e);
116		try {
117		assertNull(ecs.poll());
118		Callable c = new StringTask();
119		ecs.submit(c);
120	<	Thread.sleep(SHORT_DELAY_MS);
121	<	for (;;) {
122	<	Future f = ecs.poll();
123	<	if (f != null) {
124	<	assert(f.isDone());
125	<	break;
126	<	}
120	>
121	>	long startTime = System.nanoTime();
122	>	Future f;
123	>	while ((f = ecs.poll()) == null) {
124	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
125	>	fail("timed out");
126	>	Thread.yield();
127		}
128	<	} catch (Exception ex) {
129	<	unexpectedException();
128	>	assertTrue(f.isDone());
129	>	assertSame(TEST_STRING, f.get());
130		} finally {
131		joinPool(e);
132		}
#	Line 140 | Line 134 | public class ExecutorCompletionServiceTe
134
135		/**
136		* If timed poll returns non-null, the returned task is completed
137	<	*/
138	<	public void testPoll2() {
137	>	*/
138	>	public void testPoll2() throws InterruptedException {
139		ExecutorService e = Executors.newCachedThreadPool();
140		ExecutorCompletionService ecs = new ExecutorCompletionService(e);
141		try {
142		assertNull(ecs.poll());
143		Callable c = new StringTask();
144		ecs.submit(c);
145	<	Future f = ecs.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
146	<	if (f != null)
147	<	assert(f.isDone());
148	<	} catch (Exception ex) {
149	<	unexpectedException();
145	>	Future f = ecs.poll(SHORT_DELAY_MS, MILLISECONDS);
146	>	if (f != null)
147	>	assertTrue(f.isDone());
148	>	} finally {
149	>	joinPool(e);
150	>	}
151	>	}
152	>
153	>	/**
154	>	* Submitting to underlying AES that overrides newTaskFor(Callable)
155	>	* returns and eventually runs Future returned by newTaskFor.
156	>	*/
157	>	public void testNewTaskForCallable() throws InterruptedException {
158	>	final AtomicBoolean done = new AtomicBoolean(false);
159	>	class MyCallableFuture<V> extends FutureTask<V> {
160	>	MyCallableFuture(Callable<V> c) { super(c); }
161	>	protected void done() { done.set(true); }
162	>	}
163	>	ExecutorService e = new ThreadPoolExecutor(
164	>	1, 1, 30L, TimeUnit.SECONDS,
165	>	new ArrayBlockingQueue<Runnable>(1)) {
166	>	protected <T> RunnableFuture<T> newTaskFor(Callable<T> c) {
167	>	return new MyCallableFuture<T>(c);
168	>	}};
169	>	ExecutorCompletionService<String> ecs =
170	>	new ExecutorCompletionService<String>(e);
171	>	try {
172	>	assertNull(ecs.poll());
173	>	Callable<String> c = new StringTask();
174	>	Future f1 = ecs.submit(c);
175	>	assertTrue("submit must return MyCallableFuture",
176	>	f1 instanceof MyCallableFuture);
177	>	Future f2 = ecs.take();
178	>	assertSame("submit and take must return same objects", f1, f2);
179	>	assertTrue("completed task must have set done", done.get());
180	>	} finally {
181	>	joinPool(e);
182	>	}
183	>	}
184	>
185	>	/**
186	>	* Submitting to underlying AES that overrides newTaskFor(Runnable,T)
187	>	* returns and eventually runs Future returned by newTaskFor.
188	>	*/
189	>	public void testNewTaskForRunnable() throws InterruptedException {
190	>	final AtomicBoolean done = new AtomicBoolean(false);
191	>	class MyRunnableFuture<V> extends FutureTask<V> {
192	>	MyRunnableFuture(Runnable t, V r) { super(t, r); }
193	>	protected void done() { done.set(true); }
194	>	}
195	>	ExecutorService e = new ThreadPoolExecutor(
196	>	1, 1, 30L, TimeUnit.SECONDS,
197	>	new ArrayBlockingQueue<Runnable>(1)) {
198	>	protected <T> RunnableFuture<T> newTaskFor(Runnable t, T r) {
199	>	return new MyRunnableFuture<T>(t, r);
200	>	}};
201	>	ExecutorCompletionService<String> ecs =
202	>	new ExecutorCompletionService<String>(e);
203	>	try {
204	>	assertNull(ecs.poll());
205	>	Runnable r = new NoOpRunnable();
206	>	Future f1 = ecs.submit(r, null);
207	>	assertTrue("submit must return MyRunnableFuture",
208	>	f1 instanceof MyRunnableFuture);
209	>	Future f2 = ecs.take();
210	>	assertSame("submit and take must return same objects", f1, f2);
211	>	assertTrue("completed task must have set done", done.get());
212		} finally {
213		joinPool(e);
214		}

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