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

Comparing jsr166/src/test/tck/AtomicLongArrayTest.java (file contents):
Revision 1.4 by dl, Sat Sep 20 18:20:07 2003 UTC vs.
Revision 1.8 by dl, Sat Jan 10 01:41:59 2004 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.*;
10		import java.util.concurrent.atomic.*;
11		import java.io.*;
12	+	import java.util.*;
13
14		public class AtomicLongArrayTest extends JSR166TestCase {
15		public static void main (String[] args) {
#	Line 18 | Line 20 | public class AtomicLongArrayTest extends
20		}
21
22		/**
23	<	*
23	>	* constructor creates array of given size with all elements zero
24		*/
25		public void testConstructor(){
26		AtomicLongArray ai = new AtomicLongArray(SIZE);
#	Line 27 | Line 29 | public class AtomicLongArrayTest extends
29		}
30
31		/**
32	<	*
32	>	* constructor with null array throws NPE
33	>	*/
34	>	public void testConstructor2NPE() {
35	>	try {
36	>	long[] a = null;
37	>	AtomicLongArray ai = new AtomicLongArray(a);
38	>	} catch (NullPointerException success) {
39	>	} catch (Exception ex) {
40	>	unexpectedException();
41	>	}
42	>	}
43	>
44	>	/**
45	>	* constructor with array is of same size and has all elements
46	>	*/
47	>	public void testConstructor2() {
48	>	long[] a = { 17L, 3L, -42L, 99L, -7L};
49	>	AtomicLongArray ai = new AtomicLongArray(a);
50	>	assertEquals(a.length, ai.length());
51	>	for (int i = 0; i < a.length; ++i)
52	>	assertEquals(a[i], ai.get(i));
53	>	}
54	>
55	>	/**
56	>	* get and set for out of bound indices throw IndexOutOfBoundsException
57	>	*/
58	>	public void testIndexing(){
59	>	AtomicLongArray ai = new AtomicLongArray(SIZE);
60	>	try {
61	>	ai.get(SIZE);
62	>	} catch(IndexOutOfBoundsException success){
63	>	}
64	>	try {
65	>	ai.get(-1);
66	>	} catch(IndexOutOfBoundsException success){
67	>	}
68	>	try {
69	>	ai.set(SIZE, 0);
70	>	} catch(IndexOutOfBoundsException success){
71	>	}
72	>	try {
73	>	ai.set(-1, 0);
74	>	} catch(IndexOutOfBoundsException success){
75	>	}
76	>	}
77	>
78	>	/**
79	>	* get returns the last value set at index
80		*/
81		public void testGetSet(){
82		AtomicLongArray ai = new AtomicLongArray(SIZE);
#	Line 42 | Line 91 | public class AtomicLongArrayTest extends
91		}
92
93		/**
94	<	*
94	>	* compareAndSet succeeds in changing value if equal to expected else fails
95		*/
96		public void testCompareAndSet(){
97		AtomicLongArray ai = new AtomicLongArray(SIZE);
#	Line 59 | Line 108 | public class AtomicLongArrayTest extends
108		}
109
110		/**
111	<	*
111	>	* compareAndSet in one thread enables another waiting for value
112	>	* to succeed
113	>	*/
114	>	public void testCompareAndSetInMultipleThreads() {
115	>	final AtomicLongArray a = new AtomicLongArray(1);
116	>	a.set(0, 1);
117	>	Thread t = new Thread(new Runnable() {
118	>	public void run() {
119	>	while(!a.compareAndSet(0, 2, 3)) Thread.yield();
120	>	}});
121	>	try {
122	>	t.start();
123	>	assertTrue(a.compareAndSet(0, 1, 2));
124	>	t.join(LONG_DELAY_MS);
125	>	assertFalse(t.isAlive());
126	>	assertEquals(a.get(0), 3);
127	>	}
128	>	catch(Exception e) {
129	>	unexpectedException();
130	>	}
131	>	}
132	>
133	>	/**
134	>	* repeated weakCompareAndSet succeeds in changing value when equal
135	>	* to expected
136		*/
137		public void testWeakCompareAndSet(){
138		AtomicLongArray ai = new AtomicLongArray(SIZE);
#	Line 74 | Line 147 | public class AtomicLongArrayTest extends
147		}
148
149		/**
150	<	*
150	>	*  getAndSet returns previous value and sets to given value at given index
151		*/
152		public void testGetAndSet(){
153		AtomicLongArray ai = new AtomicLongArray(SIZE);
#	Line 87 | Line 160 | public class AtomicLongArrayTest extends
160		}
161
162		/**
163	<	*
163	>	*  getAndAdd returns previous value and adds given value
164		*/
165		public void testGetAndAdd(){
166		AtomicLongArray ai = new AtomicLongArray(SIZE);
#	Line 101 | Line 174 | public class AtomicLongArrayTest extends
174		}
175
176		/**
177	<	*
177	>	* getAndDecrement returns previous value and decrements
178		*/
179		public void testGetAndDecrement(){
180		AtomicLongArray ai = new AtomicLongArray(SIZE);
#	Line 114 | Line 187 | public class AtomicLongArrayTest extends
187		}
188
189		/**
190	<	*
190	>	* getAndIncrement returns previous value and increments
191		*/
192		public void testGetAndIncrement(){
193		AtomicLongArray ai = new AtomicLongArray(SIZE);
#	Line 131 | Line 204 | public class AtomicLongArrayTest extends
204		}
205
206		/**
207	<	*
207	>	*  addAndGet adds given value to current, and returns current value
208		*/
209		public void testAddAndGet() {
210		AtomicLongArray ai = new AtomicLongArray(SIZE);
#	Line 145 | Line 218 | public class AtomicLongArrayTest extends
218		}
219
220		/**
221	<	*
221	>	* decrementAndGet decrements and returns current value
222		*/
223		public void testDecrementAndGet(){
224		AtomicLongArray ai = new AtomicLongArray(SIZE);
#	Line 159 | Line 232 | public class AtomicLongArrayTest extends
232		}
233
234		/**
235	<	*
235	>	* incrementAndGet increments and returns current value
236		*/
237		public void testIncrementAndGet() {
238		AtomicLongArray ai = new AtomicLongArray(SIZE);
#	Line 200 | Line 273 | public class AtomicLongArrayTest extends
273		}
274
275		/**
276	<	*
276	>	* Multiple threads using same array of counters successfully
277	>	* update a number of times equal to total count
278		*/
279		public void testCountingInMultipleThreads() {
280		try {
#	Line 223 | Line 297 | public class AtomicLongArrayTest extends
297		}
298
299		/**
300	<	*
300	>	* a deserialized serialized array holds same values
301		*/
302		public void testSerialization() {
303		AtomicLongArray l = new AtomicLongArray(SIZE);
#	Line 247 | Line 321 | public class AtomicLongArrayTest extends
321		}
322		}
323
324	+	/**
325	+	* toString returns current value.
326	+	*/
327	+	public void testToString() {
328	+	long[] a = { 17, 3, -42, 99, -7};
329	+	AtomicLongArray ai = new AtomicLongArray(a);
330	+	assertEquals(Arrays.toString(a), ai.toString());
331	+	}
332	+
333
334		}

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