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

Comparing jsr166/src/test/tck/AtomicLongTest.java (file contents):
Revision 1.4 by dl, Sat Sep 20 18:20:07 2003 UTC vs.
Revision 1.12 by jsr166, Mon Nov 16 04:57:10 2009 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
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.
7		*/
8
9		import junit.framework.*;
#	Line 18 | Line 19 | public class AtomicLongTest extends JSR1
19		}
20
21		/**
22	<	*
22	>	* constructor initializes to given value
23		*/
24		public void testConstructor(){
25		AtomicLong ai = new AtomicLong(1);
#	Line 26 | Line 27 | public class AtomicLongTest extends JSR1
27		}
28
29		/**
30	<	*
30	>	* default constructed initializes to zero
31		*/
32		public void testConstructor2(){
33		AtomicLong ai = new AtomicLong();
#	Line 34 | Line 35 | public class AtomicLongTest extends JSR1
35		}
36
37		/**
38	<	*
38	>	* get returns the last value set
39		*/
40		public void testGetSet(){
41		AtomicLong ai = new AtomicLong(1);
#	Line 43 | Line 44 | public class AtomicLongTest extends JSR1
44		assertEquals(2,ai.get());
45		ai.set(-3);
46		assertEquals(-3,ai.get());
47	<
47	>
48		}
49	+
50	+	/**
51	+	* get returns the last value lazySet in same thread
52	+	*/
53	+	public void testGetLazySet(){
54	+	AtomicLong ai = new AtomicLong(1);
55	+	assertEquals(1,ai.get());
56	+	ai.lazySet(2);
57	+	assertEquals(2,ai.get());
58	+	ai.lazySet(-3);
59	+	assertEquals(-3,ai.get());
60	+
61	+	}
62	+
63		/**
64	<	*
64	>	* compareAndSet succeeds in changing value if equal to expected else fails
65		*/
66		public void testCompareAndSet(){
67		AtomicLong ai = new AtomicLong(1);
#	Line 60 | Line 75 | public class AtomicLongTest extends JSR1
75		}
76
77		/**
78	<	*
78	>	* compareAndSet in one thread enables another waiting for value
79	>	* to succeed
80	>	*/
81	>	public void testCompareAndSetInMultipleThreads() {
82	>	final AtomicLong ai = new AtomicLong(1);
83	>	Thread t = new Thread(new Runnable() {
84	>	public void run() {
85	>	while (!ai.compareAndSet(2, 3)) Thread.yield();
86	>	}});
87	>	try {
88	>	t.start();
89	>	assertTrue(ai.compareAndSet(1, 2));
90	>	t.join(LONG_DELAY_MS);
91	>	assertFalse(t.isAlive());
92	>	assertEquals(ai.get(), 3);
93	>	}
94	>	catch (Exception e) {
95	>	unexpectedException();
96	>	}
97	>	}
98	>
99	>	/**
100	>	* repeated weakCompareAndSet succeeds in changing value when equal
101	>	* to expected
102		*/
103		public void testWeakCompareAndSet(){
104		AtomicLong ai = new AtomicLong(1);
105	<	while(!ai.weakCompareAndSet(1,2));
106	<	while(!ai.weakCompareAndSet(2,-4));
105	>	while (!ai.weakCompareAndSet(1,2));
106	>	while (!ai.weakCompareAndSet(2,-4));
107		assertEquals(-4,ai.get());
108	<	while(!ai.weakCompareAndSet(-4,7));
108	>	while (!ai.weakCompareAndSet(-4,7));
109		assertEquals(7,ai.get());
110		}
111
112		/**
113	<	*
113	>	* getAndSet returns previous value and sets to given value
114		*/
115		public void testGetAndSet(){
116		AtomicLong ai = new AtomicLong(1);
#	Line 82 | Line 120 | public class AtomicLongTest extends JSR1
120		}
121
122		/**
123	<	*
123	>	* getAndAdd returns previous value and adds given value
124		*/
125		public void testGetAndAdd(){
126		AtomicLong ai = new AtomicLong(1);
#	Line 93 | Line 131 | public class AtomicLongTest extends JSR1
131		}
132
133		/**
134	<	*
134	>	* getAndDecrement returns previous value and decrements
135		*/
136		public void testGetAndDecrement(){
137		AtomicLong ai = new AtomicLong(1);
#	Line 103 | Line 141 | public class AtomicLongTest extends JSR1
141		}
142
143		/**
144	<	*
144	>	* getAndIncrement returns previous value and increments
145		*/
146		public void testGetAndIncrement(){
147		AtomicLong ai = new AtomicLong(1);
#	Line 117 | Line 155 | public class AtomicLongTest extends JSR1
155		}
156
157		/**
158	<	*
158	>	* addAndGet adds given value to current, and returns current value
159		*/
160		public void testAddAndGet(){
161		AtomicLong ai = new AtomicLong(1);
#	Line 128 | Line 166 | public class AtomicLongTest extends JSR1
166		}
167
168		/**
169	<	*
169	>	* decrementAndGet decrements and returns current value
170		*/
171		public void testDecrementAndGet(){
172		AtomicLong ai = new AtomicLong(1);
#	Line 139 | Line 177 | public class AtomicLongTest extends JSR1
177		}
178
179		/**
180	<	*
180	>	* incrementAndGet increments and returns current value
181		*/
182		public void testIncrementAndGet(){
183		AtomicLong ai = new AtomicLong(1);
#	Line 153 | Line 191 | public class AtomicLongTest extends JSR1
191		}
192
193		/**
194	<	*
194	>	* a deserialized serialized atomic holds same value
195		*/
196		public void testSerialization() {
197		AtomicLong l = new AtomicLong();
#	Line 169 | Line 207 | public class AtomicLongTest extends JSR1
207		ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
208		AtomicLong r = (AtomicLong) in.readObject();
209		assertEquals(l.get(), r.get());
210	<	} catch(Exception e){
210	>	} catch (Exception e){
211		unexpectedException();
212		}
213		}
214
215	+	/**
216	+	* toString returns current value.
217	+	*/
218	+	public void testToString() {
219	+	AtomicLong ai = new AtomicLong();
220	+	for (long i = -12; i < 6; ++i) {
221	+	ai.set(i);
222	+	assertEquals(ai.toString(), Long.toString(i));
223	+	}
224	+	}
225	+
226	+	/**
227	+	* longValue returns current value.
228	+	*/
229	+	public void testLongValue() {
230	+	AtomicLong ai = new AtomicLong();
231	+	for (int i = -12; i < 6; ++i) {
232	+	ai.set(i);
233	+	assertEquals((long)i, ai.longValue());
234	+	}
235	+	}
236	+
237	+	/**
238	+	* floatValue returns current value.
239	+	*/
240	+	public void testFloatValue() {
241	+	AtomicLong ai = new AtomicLong();
242	+	for (int i = -12; i < 6; ++i) {
243	+	ai.set(i);
244	+	assertEquals((float)i, ai.floatValue());
245	+	}
246	+	}
247	+
248	+	/**
249	+	* doubleValue returns current value.
250	+	*/
251	+	public void testDoubleValue() {
252	+	AtomicLong ai = new AtomicLong();
253	+	for (int i = -12; i < 6; ++i) {
254	+	ai.set(i);
255	+	assertEquals((double)i, ai.doubleValue());
256	+	}
257	+	}
258	+
259	+
260		}

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