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Comparing jsr166/src/test/tck/AtomicIntegerFieldUpdaterTest.java (file contents):
Revision 1.1 by dl, Sun Aug 31 19:24:53 2003 UTC vs.
Revision 1.12 by jsr166, Mon Nov 16 05:30:07 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 java.util.concurrent.atomic.*;
10		import junit.framework.*;
11		import java.util.*;
12
13	<	public class AtomicIntegerFieldUpdaterTest extends TestCase{
13	>	public class AtomicIntegerFieldUpdaterTest extends JSR166TestCase {
14		volatile int x = 0;
15	<
16	<	public static void main(String[] args){
15	>	int w;
16	>	long z;
17	>	public static void main(String[] args) {
18		junit.textui.TestRunner.run(suite());
19		}
18	–
19	–
20		public static Test suite() {
21		return new TestSuite(AtomicIntegerFieldUpdaterTest.class);
22		}
23
24	<	public void testConstructor(){
25	<	try{
26	<	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest>
24	>	/**
25	>	* Construction with non-existent field throws RuntimeException
26	>	*/
27	>	public void testConstructor() {
28	>	try {
29	>	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest>
30	>	a = AtomicIntegerFieldUpdater.newUpdater
31	>	(AtomicIntegerFieldUpdaterTest.class, "y");
32	>	shouldThrow();
33	>	}
34	>	catch (RuntimeException rt) {}
35	>	}
36	>
37	>	/**
38	>	* construction with field not of given type throws RuntimeException
39	>	*/
40	>	public void testConstructor2() {
41	>	try {
42	>	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest>
43	>	a = AtomicIntegerFieldUpdater.newUpdater
44	>	(AtomicIntegerFieldUpdaterTest.class, "z");
45	>	shouldThrow();
46	>	}
47	>	catch (RuntimeException rt) {}
48	>	}
49	>
50	>	/**
51	>	* construction with non-volatile field throws RuntimeException
52	>	*/
53	>	public void testConstructor3() {
54	>	try {
55	>	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest>
56		a = AtomicIntegerFieldUpdater.newUpdater
57	<	(getClass(), "y");
58	<	fail("Exception not thrown");
57	>	(AtomicIntegerFieldUpdaterTest.class, "w");
58	>	shouldThrow();
59		}
60		catch (RuntimeException rt) {}
61		}
62
63	<	public void testGetSet(){
64	<	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(getClass(), "x");
63	>	/**
64	>	*  get returns the last value set or assigned
65	>	*/
66	>	public void testGetSet() {
67	>	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
68	>	try {
69	>	a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
70	>	} catch (RuntimeException ok) {
71	>	return;
72	>	}
73		x = 1;
74		assertEquals(1,a.get(this));
75		a.set(this,2);
76		assertEquals(2,a.get(this));
77		a.set(this,-3);
78		assertEquals(-3,a.get(this));
79	<
79	>
80	>	}
81	>
82	>	/**
83	>	*  get returns the last value lazySet by same thread
84	>	*/
85	>	public void testGetLazySet() {
86	>	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
87	>	try {
88	>	a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
89	>	} catch (RuntimeException ok) {
90	>	return;
91	>	}
92	>	x = 1;
93	>	assertEquals(1,a.get(this));
94	>	a.lazySet(this,2);
95	>	assertEquals(2,a.get(this));
96	>	a.lazySet(this,-3);
97	>	assertEquals(-3,a.get(this));
98	>
99		}
100	<	public void testCompareAndSet(){
101	<	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(getClass(), "x");
100	>
101	>	/**
102	>	* compareAndSet succeeds in changing value if equal to expected else fails
103	>	*/
104	>	public void testCompareAndSet() {
105	>	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
106	>	try {
107	>	a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
108	>	} catch (RuntimeException ok) {
109	>	return;
110	>	}
111		x = 1;
112		assertTrue(a.compareAndSet(this,1,2));
113		assertTrue(a.compareAndSet(this,2,-4));
#	Line 53 | Line 118 | public class AtomicIntegerFieldUpdaterTe
118		assertEquals(7,a.get(this));
119		}
120
121	<	public void testWeakCompareAndSet(){
122	<	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(getClass(), "x");
121	>
122	>	/**
123	>	* compareAndSet in one thread enables another waiting for value
124	>	* to succeed
125	>	*/
126	>	public void testCompareAndSetInMultipleThreads() {
127	>	x = 1;
128	>	final AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest>a;
129	>	try {
130	>	a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
131	>	} catch (RuntimeException ok) {
132	>	return;
133	>	}
134	>
135	>	Thread t = new Thread(new Runnable() {
136	>	public void run() {
137	>	while (!a.compareAndSet(AtomicIntegerFieldUpdaterTest.this, 2, 3)) Thread.yield();
138	>	}});
139	>	try {
140	>	t.start();
141	>	assertTrue(a.compareAndSet(this, 1, 2));
142	>	t.join(LONG_DELAY_MS);
143	>	assertFalse(t.isAlive());
144	>	assertEquals(a.get(this), 3);
145	>	}
146	>	catch (Exception e) {
147	>	unexpectedException();
148	>	}
149	>	}
150	>
151	>	/**
152	>	* repeated weakCompareAndSet succeeds in changing value when equal
153	>	* to expected
154	>	*/
155	>	public void testWeakCompareAndSet() {
156	>	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
157	>	try {
158	>	a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
159	>	} catch (RuntimeException ok) {
160	>	return;
161	>	}
162		x = 1;
163	<	while(!a.weakCompareAndSet(this,1,2));
164	<	while(!a.weakCompareAndSet(this,2,-4));
163	>	while (!a.weakCompareAndSet(this,1,2));
164	>	while (!a.weakCompareAndSet(this,2,-4));
165		assertEquals(-4,a.get(this));
166	<	while(!a.weakCompareAndSet(this,-4,7));
166	>	while (!a.weakCompareAndSet(this,-4,7));
167		assertEquals(7,a.get(this));
168		}
169
170	<	public void testGetAndSet(){
171	<	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(getClass(), "x");
170	>	/**
171	>	*  getAndSet returns previous value and sets to given value
172	>	*/
173	>	public void testGetAndSet() {
174	>	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
175	>	try {
176	>	a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
177	>	} catch (RuntimeException ok) {
178	>	return;
179	>	}
180		x = 1;
181		assertEquals(1,a.getAndSet(this, 0));
182		assertEquals(0,a.getAndSet(this,-10));
183		assertEquals(-10,a.getAndSet(this,1));
184		}
185
186	<	public void testGetAndAdd(){
187	<	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(getClass(), "x");
186	>	/**
187	>	* getAndAdd returns previous value and adds given value
188	>	*/
189	>	public void testGetAndAdd() {
190	>	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
191	>	try {
192	>	a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
193	>	} catch (RuntimeException ok) {
194	>	return;
195	>	}
196		x = 1;
197		assertEquals(1,a.getAndAdd(this,2));
198		assertEquals(3,a.get(this));
#	Line 80 | Line 200 | public class AtomicIntegerFieldUpdaterTe
200		assertEquals(-1,a.get(this));
201		}
202
203	<	public void testGetAndDecrement(){
204	<	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(getClass(), "x");
203	>	/**
204	>	* getAndDecrement returns previous value and decrements
205	>	*/
206	>	public void testGetAndDecrement() {
207	>	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
208	>	try {
209	>	a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
210	>	} catch (RuntimeException ok) {
211	>	return;
212	>	}
213		x = 1;
214		assertEquals(1,a.getAndDecrement(this));
215		assertEquals(0,a.getAndDecrement(this));
216		assertEquals(-1,a.getAndDecrement(this));
217		}
218
219	<	public void testGetAndIncrement(){
220	<	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(getClass(), "x");
219	>	/**
220	>	* getAndIncrement returns previous value and increments
221	>	*/
222	>	public void testGetAndIncrement() {
223	>	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
224	>	try {
225	>	a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
226	>	} catch (RuntimeException ok) {
227	>	return;
228	>	}
229		x = 1;
230		assertEquals(1,a.getAndIncrement(this));
231		assertEquals(2,a.get(this));
#	Line 100 | Line 236 | public class AtomicIntegerFieldUpdaterTe
236		assertEquals(1,a.get(this));
237		}
238
239	<	public void testAddAndGet(){
240	<	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(getClass(), "x");
239	>	/**
240	>	* addAndGet adds given value to current, and returns current value
241	>	*/
242	>	public void testAddAndGet() {
243	>	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
244	>	try {
245	>	a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
246	>	} catch (RuntimeException ok) {
247	>	return;
248	>	}
249		x = 1;
250		assertEquals(3,a.addAndGet(this,2));
251		assertEquals(3,a.get(this));
#	Line 109 | Line 253 | public class AtomicIntegerFieldUpdaterTe
253		assertEquals(-1,a.get(this));
254		}
255
256	<	public void testDecrementAndGet(){
257	<	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(getClass(), "x");
256	>	/**
257	>	* decrementAndGet decrements and returns current value
258	>	*/
259	>	public void testDecrementAndGet() {
260	>	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
261	>	try {
262	>	a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
263	>	} catch (RuntimeException ok) {
264	>	return;
265	>	}
266		x = 1;
267		assertEquals(0,a.decrementAndGet(this));
268		assertEquals(-1,a.decrementAndGet(this));
#	Line 118 | Line 270 | public class AtomicIntegerFieldUpdaterTe
270		assertEquals(-2,a.get(this));
271		}
272
273	<	public void testIncrementAndGet(){
274	<	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(getClass(), "x");
273	>	/**
274	>	* incrementAndGet increments and returns current value
275	>	*/
276	>	public void testIncrementAndGet() {
277	>	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
278	>	try {
279	>	a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
280	>	} catch (RuntimeException ok) {
281	>	return;
282	>	}
283		x = 1;
284		assertEquals(2,a.incrementAndGet(this));
285		assertEquals(2,a.get(this));

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