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

Comparing jsr166/src/test/tck/AtomicLongArrayTest.java (file contents):
Revision 1.3 by dl, Sun Sep 14 20:42:40 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 17 | Line 18 | public class AtomicLongArrayTest extends
18		return new TestSuite(AtomicLongArrayTest.class);
19		}
20
21	+	/**
22	+	* constructor creates array of given size with all elements zero
23	+	*/
24		public void testConstructor(){
25		AtomicLongArray ai = new AtomicLongArray(SIZE);
26		for (int i = 0; i < SIZE; ++i)
27		assertEquals(0,ai.get(i));
28		}
29
30	+	/**
31	+	* constructor with null array throws NPE
32	+	*/
33	+	public void testConstructor2NPE() {
34	+	try {
35	+	long[] a = null;
36	+	AtomicLongArray ai = new AtomicLongArray(a);
37	+	} catch (NullPointerException success) {
38	+	} catch (Exception ex) {
39	+	unexpectedException();
40	+	}
41	+	}
42	+
43	+	/**
44	+	* constructor with array is of same size and has all elements
45	+	*/
46	+	public void testConstructor2() {
47	+	long[] a = { 17L, 3L, -42L, 99L, -7L};
48	+	AtomicLongArray ai = new AtomicLongArray(a);
49	+	assertEquals(a.length, ai.length());
50	+	for (int i = 0; i < a.length; ++i)
51	+	assertEquals(a[i], ai.get(i));
52	+	}
53	+
54	+	/**
55	+	* get and set for out of bound indices throw IndexOutOfBoundsException
56	+	*/
57	+	public void testIndexing(){
58	+	AtomicLongArray ai = new AtomicLongArray(SIZE);
59	+	try {
60	+	ai.get(SIZE);
61	+	} catch(IndexOutOfBoundsException success){
62	+	}
63	+	try {
64	+	ai.get(-1);
65	+	} catch(IndexOutOfBoundsException success){
66	+	}
67	+	try {
68	+	ai.set(SIZE, 0);
69	+	} catch(IndexOutOfBoundsException success){
70	+	}
71	+	try {
72	+	ai.set(-1, 0);
73	+	} catch(IndexOutOfBoundsException success){
74	+	}
75	+	}
76	+
77	+	/**
78	+	* get returns the last value set at index
79	+	*/
80		public void testGetSet(){
81		AtomicLongArray ai = new AtomicLongArray(SIZE);
82		for (int i = 0; i < SIZE; ++i) {
#	Line 35 | Line 89 | public class AtomicLongArrayTest extends
89		}
90		}
91
92	+	/**
93	+	* compareAndSet succeeds in changing value if equal to expected else fails
94	+	*/
95		public void testCompareAndSet(){
96		AtomicLongArray ai = new AtomicLongArray(SIZE);
97		for (int i = 0; i < SIZE; ++i) {
#	Line 49 | Line 106 | public class AtomicLongArrayTest extends
106		}
107		}
108
109	+	/**
110	+	* compareAndSet in one thread enables another waiting for value
111	+	* to succeed
112	+	*/
113	+	public void testCompareAndSetInMultipleThreads() {
114	+	final AtomicLongArray a = new AtomicLongArray(1);
115	+	a.set(0, 1);
116	+	Thread t = new Thread(new Runnable() {
117	+	public void run() {
118	+	while(!a.compareAndSet(0, 2, 3)) Thread.yield();
119	+	}});
120	+	try {
121	+	t.start();
122	+	assertTrue(a.compareAndSet(0, 1, 2));
123	+	t.join(LONG_DELAY_MS);
124	+	assertFalse(t.isAlive());
125	+	assertEquals(a.get(0), 3);
126	+	}
127	+	catch(Exception e) {
128	+	unexpectedException();
129	+	}
130	+	}
131	+
132	+	/**
133	+	* repeated weakCompareAndSet succeeds in changing value when equal
134	+	* to expected
135	+	*/
136		public void testWeakCompareAndSet(){
137		AtomicLongArray ai = new AtomicLongArray(SIZE);
138		for (int i = 0; i < SIZE; ++i) {
#	Line 61 | Line 145 | public class AtomicLongArrayTest extends
145		}
146		}
147
148	+	/**
149	+	*  getAndSet returns previous value and sets to given value at given index
150	+	*/
151		public void testGetAndSet(){
152		AtomicLongArray ai = new AtomicLongArray(SIZE);
153		for (int i = 0; i < SIZE; ++i) {
#	Line 71 | Line 158 | public class AtomicLongArrayTest extends
158		}
159		}
160
161	+	/**
162	+	*  getAndAdd returns previous value and adds given value
163	+	*/
164		public void testGetAndAdd(){
165		AtomicLongArray ai = new AtomicLongArray(SIZE);
166		for (int i = 0; i < SIZE; ++i) {
#	Line 82 | Line 172 | public class AtomicLongArrayTest extends
172		}
173		}
174
175	+	/**
176	+	* getAndDecrement returns previous value and decrements
177	+	*/
178		public void testGetAndDecrement(){
179		AtomicLongArray ai = new AtomicLongArray(SIZE);
180		for (int i = 0; i < SIZE; ++i) {
#	Line 92 | Line 185 | public class AtomicLongArrayTest extends
185		}
186		}
187
188	+	/**
189	+	* getAndIncrement returns previous value and increments
190	+	*/
191		public void testGetAndIncrement(){
192		AtomicLongArray ai = new AtomicLongArray(SIZE);
193		for (int i = 0; i < SIZE; ++i) {
#	Line 106 | Line 202 | public class AtomicLongArrayTest extends
202		}
203		}
204
205	+	/**
206	+	*  addAndGet adds given value to current, and returns current value
207	+	*/
208		public void testAddAndGet() {
209		AtomicLongArray ai = new AtomicLongArray(SIZE);
210		for (int i = 0; i < SIZE; ++i) {
#	Line 117 | Line 216 | public class AtomicLongArrayTest extends
216		}
217		}
218
219	+	/**
220	+	* decrementAndGet decrements and returns current value
221	+	*/
222		public void testDecrementAndGet(){
223		AtomicLongArray ai = new AtomicLongArray(SIZE);
224		for (int i = 0; i < SIZE; ++i) {
#	Line 128 | Line 230 | public class AtomicLongArrayTest extends
230		}
231		}
232
233	+	/**
234	+	* incrementAndGet increments and returns current value
235	+	*/
236		public void testIncrementAndGet() {
237		AtomicLongArray ai = new AtomicLongArray(SIZE);
238		for (int i = 0; i < SIZE; ++i) {
#	Line 166 | Line 271 | public class AtomicLongArrayTest extends
271		}
272		}
273
274	+	/**
275	+	* Multiple threads using same array of counters successfully
276	+	* update a number of times equal to total count
277	+	*/
278		public void testCountingInMultipleThreads() {
279		try {
280		final AtomicLongArray ai = new AtomicLongArray(SIZE);
#	Line 182 | Line 291 | public class AtomicLongArrayTest extends
291		assertEquals(c1.counts+c2.counts, SIZE * COUNTDOWN);
292		}
293		catch(InterruptedException ie) {
294	<	fail("unexpected exception");
294	>	unexpectedException();
295		}
296		}
297
298	+	/**
299	+	* a deserialized serialized array holds same values
300	+	*/
301		public void testSerialization() {
302		AtomicLongArray l = new AtomicLongArray(SIZE);
303		for (int i = 0; i < SIZE; ++i)
#	Line 204 | Line 316 | public class AtomicLongArrayTest extends
316		assertEquals(l.get(i), r.get(i));
317		}
318		} catch(Exception e){
319	<	e.printStackTrace();
208	<	fail("unexpected exception");
319	>	unexpectedException();
320		}
321		}
322

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