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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 1.20 by jsr166, Sun Feb 22 04:34:44 2015 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	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10
11	<	import junit.framework.*;
12	<	import java.util.*;
13	<	import java.util.concurrent.*;
14	<	import java.math.BigInteger;
15	<	import java.security.*;
11	>	import java.util.concurrent.ArrayBlockingQueue;
12	>	import java.util.concurrent.Callable;
13	>	import java.util.concurrent.ExecutorCompletionService;
14	>	import java.util.concurrent.Executors;
15	>	import java.util.concurrent.ExecutorService;
16	>	import java.util.concurrent.Future;
17	>	import java.util.concurrent.FutureTask;
18	>	import java.util.concurrent.RunnableFuture;
19	>	import java.util.concurrent.ThreadPoolExecutor;
20	>	import java.util.concurrent.TimeUnit;
21	>	import java.util.concurrent.atomic.AtomicBoolean;
22
23	<	public class ExecutorCompletionServiceTest extends JSR166TestCase{
23	>	import junit.framework.Test;
24	>	import junit.framework.TestSuite;
25	>
26	>	public class ExecutorCompletionServiceTest extends JSR166TestCase {
27		public static void main(String[] args) {
28	<	junit.textui.TestRunner.run (suite());
28	>	junit.textui.TestRunner.run(suite());
29		}
30		public static Test suite() {
31		return new TestSuite(ExecutorCompletionServiceTest.class);
32		}
33
24	–
34		/**
35		* Creating a new ECS with null Executor throw NPE
36	<	*/
36	>	*/
37		public void testConstructorNPE() {
38		try {
39	<	ExecutorCompletionService ecs = new ExecutorCompletionService(null);
39	>	new ExecutorCompletionService(null);
40		shouldThrow();
41	<	} catch (NullPointerException success) {
33	<	}
41	>	} catch (NullPointerException success) {}
42		}
43
44		/**
45		* Creating a new ECS with null queue throw NPE
46	<	*/
46	>	*/
47		public void testConstructorNPE2() {
48		try {
49		ExecutorService e = Executors.newCachedThreadPool();
50	<	ExecutorCompletionService ecs = new ExecutorCompletionService(e, null);
50	>	new ExecutorCompletionService(e, null);
51		shouldThrow();
52	<	} catch (NullPointerException success) {
45	<	}
52	>	} catch (NullPointerException success) {}
53		}
54
55		/**
56		* Submitting a null callable throws NPE
57	<	*/
57	>	*/
58		public void testSubmitNPE() {
59		ExecutorService e = Executors.newCachedThreadPool();
60		ExecutorCompletionService ecs = new ExecutorCompletionService(e);
#	Line 63 | Line 70 | public class ExecutorCompletionServiceTe
70
71		/**
72		* Submitting a null runnable throws NPE
73	<	*/
73	>	*/
74		public void testSubmitNPE2() {
75		ExecutorService e = Executors.newCachedThreadPool();
76		ExecutorCompletionService ecs = new ExecutorCompletionService(e);
#	Line 79 | Line 86 | public class ExecutorCompletionServiceTe
86
87		/**
88		* A taken submitted task is completed
89	<	*/
90	<	public void testTake() {
89	>	*/
90	>	public void testTake() throws InterruptedException {
91		ExecutorService e = Executors.newCachedThreadPool();
92		ExecutorCompletionService ecs = new ExecutorCompletionService(e);
93		try {
94		Callable c = new StringTask();
95		ecs.submit(c);
96		Future f = ecs.take();
97	<	assert(f.isDone());
91	<	} catch (Exception ex) {
92	<	unexpectedException();
97	>	assertTrue(f.isDone());
98		} finally {
99		joinPool(e);
100		}
#	Line 97 | Line 102 | public class ExecutorCompletionServiceTe
102
103		/**
104		* Take returns the same future object returned by submit
105	<	*/
106	<	public void testTake2() {
105	>	*/
106	>	public void testTake2() throws InterruptedException {
107		ExecutorService e = Executors.newCachedThreadPool();
108		ExecutorCompletionService ecs = new ExecutorCompletionService(e);
109		try {
#	Line 106 | Line 111 | public class ExecutorCompletionServiceTe
111		Future f1 = ecs.submit(c);
112		Future f2 = ecs.take();
113		assertSame(f1, f2);
109	–	} catch (Exception ex) {
110	–	unexpectedException();
114		} finally {
115		joinPool(e);
116		}
#	Line 115 | Line 118 | public class ExecutorCompletionServiceTe
118
119		/**
120		* If poll returns non-null, the returned task is completed
121	<	*/
122	<	public void testPoll1() {
121	>	*/
122	>	public void testPoll1() throws Exception {
123		ExecutorService e = Executors.newCachedThreadPool();
124		ExecutorCompletionService ecs = new ExecutorCompletionService(e);
125		try {
126		assertNull(ecs.poll());
127		Callable c = new StringTask();
128		ecs.submit(c);
129	<	Thread.sleep(SHORT_DELAY_MS);
130	<	for (;;) {
131	<	Future f = ecs.poll();
132	<	if (f != null) {
133	<	assert(f.isDone());
134	<	break;
135	<	}
129	>
130	>	long startTime = System.nanoTime();
131	>	Future f;
132	>	while ((f = ecs.poll()) == null) {
133	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
134	>	fail("timed out");
135	>	Thread.yield();
136		}
137	<	} catch (Exception ex) {
138	<	unexpectedException();
137	>	assertTrue(f.isDone());
138	>	assertSame(TEST_STRING, f.get());
139		} finally {
140		joinPool(e);
141		}
#	Line 140 | Line 143 | public class ExecutorCompletionServiceTe
143
144		/**
145		* If timed poll returns non-null, the returned task is completed
146	<	*/
147	<	public void testPoll2() {
146	>	*/
147	>	public void testPoll2() throws InterruptedException {
148		ExecutorService e = Executors.newCachedThreadPool();
149		ExecutorCompletionService ecs = new ExecutorCompletionService(e);
150		try {
151		assertNull(ecs.poll());
152		Callable c = new StringTask();
153		ecs.submit(c);
154	<	Future f = ecs.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
155	<	if (f != null)
156	<	assert(f.isDone());
157	<	} catch (Exception ex) {
158	<	unexpectedException();
154	>	Future f = ecs.poll(SHORT_DELAY_MS, MILLISECONDS);
155	>	if (f != null)
156	>	assertTrue(f.isDone());
157	>	} finally {
158	>	joinPool(e);
159	>	}
160	>	}
161	>
162	>	/**
163	>	* Submitting to underlying AES that overrides newTaskFor(Callable)
164	>	* returns and eventually runs Future returned by newTaskFor.
165	>	*/
166	>	public void testNewTaskForCallable() throws InterruptedException {
167	>	final AtomicBoolean done = new AtomicBoolean(false);
168	>	class MyCallableFuture<V> extends FutureTask<V> {
169	>	MyCallableFuture(Callable<V> c) { super(c); }
170	>	protected void done() { done.set(true); }
171	>	}
172	>	ExecutorService e = new ThreadPoolExecutor(
173	>	1, 1, 30L, TimeUnit.SECONDS,
174	>	new ArrayBlockingQueue<Runnable>(1)) {
175	>	protected <T> RunnableFuture<T> newTaskFor(Callable<T> c) {
176	>	return new MyCallableFuture<T>(c);
177	>	}};
178	>	ExecutorCompletionService<String> ecs =
179	>	new ExecutorCompletionService<String>(e);
180	>	try {
181	>	assertNull(ecs.poll());
182	>	Callable<String> c = new StringTask();
183	>	Future f1 = ecs.submit(c);
184	>	assertTrue("submit must return MyCallableFuture",
185	>	f1 instanceof MyCallableFuture);
186	>	Future f2 = ecs.take();
187	>	assertSame("submit and take must return same objects", f1, f2);
188	>	assertTrue("completed task must have set done", done.get());
189	>	} finally {
190	>	joinPool(e);
191	>	}
192	>	}
193	>
194	>	/**
195	>	* Submitting to underlying AES that overrides newTaskFor(Runnable,T)
196	>	* returns and eventually runs Future returned by newTaskFor.
197	>	*/
198	>	public void testNewTaskForRunnable() throws InterruptedException {
199	>	final AtomicBoolean done = new AtomicBoolean(false);
200	>	class MyRunnableFuture<V> extends FutureTask<V> {
201	>	MyRunnableFuture(Runnable t, V r) { super(t, r); }
202	>	protected void done() { done.set(true); }
203	>	}
204	>	ExecutorService e = new ThreadPoolExecutor(
205	>	1, 1, 30L, TimeUnit.SECONDS,
206	>	new ArrayBlockingQueue<Runnable>(1)) {
207	>	protected <T> RunnableFuture<T> newTaskFor(Runnable t, T r) {
208	>	return new MyRunnableFuture<T>(t, r);
209	>	}};
210	>	ExecutorCompletionService<String> ecs =
211	>	new ExecutorCompletionService<String>(e);
212	>	try {
213	>	assertNull(ecs.poll());
214	>	Runnable r = new NoOpRunnable();
215	>	Future f1 = ecs.submit(r, null);
216	>	assertTrue("submit must return MyRunnableFuture",
217	>	f1 instanceof MyRunnableFuture);
218	>	Future f2 = ecs.take();
219	>	assertSame("submit and take must return same objects", f1, f2);
220	>	assertTrue("completed task must have set done", done.get());
221		} finally {
222		joinPool(e);
223		}

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