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

Comparing jsr166/src/test/tck/AtomicIntegerArrayTest.java (file contents):
Revision 1.4 by dl, Sat Sep 20 18:20:07 2003 UTC vs.
Revision 1.7 by dl, Thu Jan 8 01:29:46 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.*;
#	Line 20 | Line 21 | public class AtomicIntegerArrayTest exte
21
22
23		/**
24	<	*
24	>	* constructor creates array of given size with all elements zero
25		*/
26		public void testConstructor() {
27		AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
#	Line 29 | Line 30 | public class AtomicIntegerArrayTest exte
30		}
31
32		/**
33	<	*
33	>	* constructor with null array throws NPE
34	>	*/
35	>	public void testConstructor2NPE() {
36	>	try {
37	>	int[] a = null;
38	>	AtomicIntegerArray ai = new AtomicIntegerArray(a);
39	>	} catch (NullPointerException success) {
40	>	} catch (Exception ex) {
41	>	unexpectedException();
42	>	}
43	>	}
44	>
45	>	/**
46	>	* constructor with array is of same size and has all elements
47	>	*/
48	>	public void testConstructor2() {
49	>	int[] a = { 17, 3, -42, 99, -7};
50	>	AtomicIntegerArray ai = new AtomicIntegerArray(a);
51	>	assertEquals(a.length, ai.length());
52	>	for (int i = 0; i < a.length; ++i)
53	>	assertEquals(a[i], ai.get(i));
54	>	}
55	>
56	>	/**
57	>	* get and set for out of bound indices throw IndexOutOfBoundsException
58	>	*/
59	>	public void testIndexing(){
60	>	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
61	>	try {
62	>	ai.get(SIZE);
63	>	} catch(IndexOutOfBoundsException success){
64	>	}
65	>	try {
66	>	ai.get(-1);
67	>	} catch(IndexOutOfBoundsException success){
68	>	}
69	>	try {
70	>	ai.set(SIZE, 0);
71	>	} catch(IndexOutOfBoundsException success){
72	>	}
73	>	try {
74	>	ai.set(-1, 0);
75	>	} catch(IndexOutOfBoundsException success){
76	>	}
77	>	}
78	>
79	>	/**
80	>	* get returns the last value set at index
81		*/
82		public void testGetSet() {
83		AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
#	Line 44 | Line 92 | public class AtomicIntegerArrayTest exte
92		}
93
94		/**
95	<	*
95	>	* compareAndSet succeeds in changing value if equal to expected else fails
96		*/
97		public void testCompareAndSet() {
98		AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
#	Line 61 | Line 109 | public class AtomicIntegerArrayTest exte
109		}
110
111		/**
112	<	*
112	>	* compareAndSet in one thread enables another waiting for value
113	>	* to succeed
114	>	*/
115	>	public void testCompareAndSetInMultipleThreads() {
116	>	final AtomicIntegerArray a = new AtomicIntegerArray(1);
117	>	a.set(0, 1);
118	>	Thread t = new Thread(new Runnable() {
119	>	public void run() {
120	>	while(!a.compareAndSet(0, 2, 3)) Thread.yield();
121	>	}});
122	>	try {
123	>	t.start();
124	>	assertTrue(a.compareAndSet(0, 1, 2));
125	>	t.join(LONG_DELAY_MS);
126	>	assertFalse(t.isAlive());
127	>	assertEquals(a.get(0), 3);
128	>	}
129	>	catch(Exception e) {
130	>	unexpectedException();
131	>	}
132	>	}
133	>
134	>	/**
135	>	* repeated weakCompareAndSet succeeds in changing value when equal
136	>	* to expected
137		*/
138		public void testWeakCompareAndSet() {
139		AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
#	Line 76 | Line 148 | public class AtomicIntegerArrayTest exte
148		}
149
150		/**
151	<	*
151	>	*  getAndSet returns previous value and sets to given value at given index
152		*/
153		public void testGetAndSet() {
154		AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
#	Line 89 | Line 161 | public class AtomicIntegerArrayTest exte
161		}
162
163		/**
164	<	*
164	>	*  getAndAdd returns previous value and adds given value
165		*/
166		public void testGetAndAdd() {
167		AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
#	Line 103 | Line 175 | public class AtomicIntegerArrayTest exte
175		}
176
177		/**
178	<	*
178	>	* getAndDecrement returns previous value and decrements
179		*/
180		public void testGetAndDecrement() {
181		AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
#	Line 116 | Line 188 | public class AtomicIntegerArrayTest exte
188		}
189
190		/**
191	<	*
191	>	* getAndIncrement returns previous value and increments
192		*/
193		public void testGetAndIncrement() {
194		AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
#	Line 133 | Line 205 | public class AtomicIntegerArrayTest exte
205		}
206
207		/**
208	<	*
208	>	*  addAndGet adds given value to current, and returns current value
209		*/
210		public void testAddAndGet() {
211		AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
#	Line 147 | Line 219 | public class AtomicIntegerArrayTest exte
219		}
220
221		/**
222	<	*
222	>	* decrementAndGet decrements and returns current value
223		*/
224		public void testDecrementAndGet() {
225		AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
#	Line 161 | Line 233 | public class AtomicIntegerArrayTest exte
233		}
234
235		/**
236	<	*
236	>	*  incrementAndGet increments and returns current value
237		*/
238		public void testIncrementAndGet() {
239		AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
#	Line 202 | Line 274 | public class AtomicIntegerArrayTest exte
274		}
275
276		/**
277	<	*
277	>	* Multiple threads using same array of counters successfully
278	>	* update a number of times equal to total count
279		*/
280		public void testCountingInMultipleThreads() {
281		try {
#	Line 226 | Line 299 | public class AtomicIntegerArrayTest exte
299
300
301		/**
302	<	*
302	>	* a deserialized serialized array holds same values
303		*/
304		public void testSerialization() {
305		AtomicIntegerArray l = new AtomicIntegerArray(SIZE);

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