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

Comparing jsr166/src/test/tck/CountDownLatchTest.java (file contents):
Revision 1.6 by dl, Sat Dec 27 19:26:43 2003 UTC vs.
Revision 1.11 by jsr166, Sat Nov 21 02:07:26 2009 UTC

#	Line 2 | Line 2
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.
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9		import junit.framework.*;
#	Line 12 | Line 12 | import java.util.concurrent.*;
12
13		public class CountDownLatchTest extends JSR166TestCase {
14		public static void main(String[] args) {
15	<	junit.textui.TestRunner.run (suite());
15	>	junit.textui.TestRunner.run (suite());
16		}
17		public static Test suite() {
18	<	return new TestSuite(CountDownLatchTest.class);
18	>	return new TestSuite(CountDownLatchTest.class);
19		}
20
21		/**
#	Line 25 | Line 25 | public class CountDownLatchTest extends
25		try {
26		new CountDownLatch(-1);
27		shouldThrow();
28	<	} catch(IllegalArgumentException success){}
28	>	} catch (IllegalArgumentException success) {}
29		}
30
31		/**
32		* getCount returns initial count and decreases after countDown
33		*/
34		public void testGetCount() {
35	<	final CountDownLatch l = new CountDownLatch(2);
36	<	assertEquals(2, l.getCount());
37	<	l.countDown();
38	<	assertEquals(1, l.getCount());
35	>	final CountDownLatch l = new CountDownLatch(2);
36	>	assertEquals(2, l.getCount());
37	>	l.countDown();
38	>	assertEquals(1, l.getCount());
39		}
40
41		/**
42		* countDown decrements count when positive and has no effect when zero
43		*/
44		public void testCountDown() {
45	<	final CountDownLatch l = new CountDownLatch(1);
46	<	assertEquals(1, l.getCount());
47	<	l.countDown();
48	<	assertEquals(0, l.getCount());
49	<	l.countDown();
50	<	assertEquals(0, l.getCount());
45	>	final CountDownLatch l = new CountDownLatch(1);
46	>	assertEquals(1, l.getCount());
47	>	l.countDown();
48	>	assertEquals(0, l.getCount());
49	>	l.countDown();
50	>	assertEquals(0, l.getCount());
51		}
52
53		/**
54		* await returns after countDown to zero, but not before
55		*/
56		public void testAwait() {
57	<	final CountDownLatch l = new CountDownLatch(2);
57	>	final CountDownLatch l = new CountDownLatch(2);
58
59	<	Thread t = new Thread(new Runnable() {
60	<	public void run() {
61	<	try {
59	>	Thread t = new Thread(new Runnable() {
60	>	public void run() {
61	>	try {
62		threadAssertTrue(l.getCount() > 0);
63	<	l.await();
63	>	l.await();
64		threadAssertTrue(l.getCount() == 0);
65	<	} catch(InterruptedException e){
65	>	} catch (InterruptedException e) {
66		threadUnexpectedException();
67		}
68	<	}
69	<	});
70	<	t.start();
71	<	try {
68	>	}
69	>	});
70	>	t.start();
71	>	try {
72		assertEquals(l.getCount(), 2);
73		Thread.sleep(SHORT_DELAY_MS);
74		l.countDown();
#	Line 76 | Line 76 | public class CountDownLatchTest extends
76		l.countDown();
77		assertEquals(l.getCount(), 0);
78		t.join();
79	<	} catch (InterruptedException e){
79	>	} catch (InterruptedException e) {
80		unexpectedException();
81		}
82		}
83	<
83	>
84
85		/**
86		* timed await returns after countDown to zero
87		*/
88		public void testTimedAwait() {
89	<	final CountDownLatch l = new CountDownLatch(2);
89	>	final CountDownLatch l = new CountDownLatch(2);
90
91	<	Thread t = new Thread(new Runnable() {
92	<	public void run() {
93	<	try {
91	>	Thread t = new Thread(new Runnable() {
92	>	public void run() {
93	>	try {
94		threadAssertTrue(l.getCount() > 0);
95	<	threadAssertTrue(l.await(SMALL_DELAY_MS, TimeUnit.MILLISECONDS));
96	<	} catch(InterruptedException e){
95	>	threadAssertTrue(l.await(SMALL_DELAY_MS, TimeUnit.MILLISECONDS));
96	>	} catch (InterruptedException e) {
97		threadUnexpectedException();
98		}
99	<	}
100	<	});
101	<	t.start();
102	<	try {
99	>	}
100	>	});
101	>	t.start();
102	>	try {
103		assertEquals(l.getCount(), 2);
104		Thread.sleep(SHORT_DELAY_MS);
105		l.countDown();
#	Line 107 | Line 107 | public class CountDownLatchTest extends
107		l.countDown();
108		assertEquals(l.getCount(), 0);
109		t.join();
110	<	} catch (InterruptedException e){
110	>	} catch (InterruptedException e) {
111		unexpectedException();
112		}
113		}
114	<
114	>
115		/**
116		* await throws IE if interrupted before counted down
117		*/
#	Line 123 | Line 123 | public class CountDownLatchTest extends
123		threadAssertTrue(l.getCount() > 0);
124		l.await();
125		threadShouldThrow();
126	<	} catch(InterruptedException success){}
126	>	} catch (InterruptedException success) {}
127		}
128		});
129	<	t.start();
130	<	try {
129	>	t.start();
130	>	try {
131		assertEquals(l.getCount(), 1);
132		t.interrupt();
133		t.join();
134	<	} catch (InterruptedException e){
134	>	} catch (InterruptedException e) {
135		unexpectedException();
136		}
137		}
#	Line 146 | Line 146 | public class CountDownLatchTest extends
146		try {
147		threadAssertTrue(l.getCount() > 0);
148		l.await(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
149	<	threadShouldThrow();
150	<	} catch(InterruptedException success){}
149	>	threadShouldThrow();
150	>	} catch (InterruptedException success) {}
151		}
152		});
153		t.start();
#	Line 156 | Line 156 | public class CountDownLatchTest extends
156		assertEquals(l.getCount(), 1);
157		t.interrupt();
158		t.join();
159	<	} catch (InterruptedException e){
159	>	} catch (InterruptedException e) {
160		unexpectedException();
161		}
162		}
#	Line 172 | Line 172 | public class CountDownLatchTest extends
172		threadAssertTrue(l.getCount() > 0);
173		threadAssertFalse(l.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
174		threadAssertTrue(l.getCount() > 0);
175	<	} catch(InterruptedException ie){
175	>	} catch (InterruptedException ie) {
176		threadUnexpectedException();
177		}
178		}
#	Line 181 | Line 181 | public class CountDownLatchTest extends
181		try {
182		assertEquals(l.getCount(), 1);
183		t.join();
184	<	} catch (InterruptedException e){
184	>	} catch (InterruptedException e) {
185		unexpectedException();
186		}
187		}
188
189	+	/**
190	+	* toString indicates current count
191	+	*/
192	+	public void testToString() {
193	+	CountDownLatch s = new CountDownLatch(2);
194	+	String us = s.toString();
195	+	assertTrue(us.indexOf("Count = 2") >= 0);
196	+	s.countDown();
197	+	String s1 = s.toString();
198	+	assertTrue(s1.indexOf("Count = 1") >= 0);
199	+	s.countDown();
200	+	String s2 = s.toString();
201	+	assertTrue(s2.indexOf("Count = 0") >= 0);
202	+	}
203	+
204		}

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