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Comparing jsr166/src/test/tck/AtomicIntegerFieldUpdaterTest.java (file contents):
Revision 1.8 by dl, Tue Jan 20 20:20:56 2004 UTC vs.
Revision 1.24 by jsr166, Mon Apr 1 20:58:58 2013 UTC

#	Line 1 | Line 1
1		/*
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.
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9	–	import java.util.concurrent.atomic.*;
9		import junit.framework.*;
10	<	import java.util.*;
10	>	import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;
11
12		public class AtomicIntegerFieldUpdaterTest extends JSR166TestCase {
13		volatile int x = 0;
14		int w;
15		long z;
16	<	public static void main(String[] args){
16	>	public static void main(String[] args) {
17		junit.textui.TestRunner.run(suite());
18		}
19		public static Test suite() {
20		return new TestSuite(AtomicIntegerFieldUpdaterTest.class);
21		}
22
23	+	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> updaterFor(String fieldName) {
24	+	return AtomicIntegerFieldUpdater.newUpdater
25	+	(AtomicIntegerFieldUpdaterTest.class, fieldName);
26	+	}
27	+
28		/**
29		* Construction with non-existent field throws RuntimeException
30		*/
31		public void testConstructor() {
32	<	try{
33	<	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest>
30	<	a = AtomicIntegerFieldUpdater.newUpdater
31	<	(AtomicIntegerFieldUpdaterTest.class, "y");
32	>	try {
33	>	updaterFor("y");
34		shouldThrow();
35	<	}
34	<	catch (RuntimeException rt) {}
35	>	} catch (RuntimeException success) {}
36		}
37
38		/**
39		* construction with field not of given type throws RuntimeException
40		*/
41		public void testConstructor2() {
42	<	try{
43	<	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest>
43	<	a = AtomicIntegerFieldUpdater.newUpdater
44	<	(AtomicIntegerFieldUpdaterTest.class, "z");
42	>	try {
43	>	updaterFor("z");
44		shouldThrow();
45	<	}
47	<	catch (RuntimeException rt) {}
45	>	} catch (RuntimeException success) {}
46		}
47
48		/**
49		* construction with non-volatile field throws RuntimeException
50		*/
51		public void testConstructor3() {
52	<	try{
53	<	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest>
56	<	a = AtomicIntegerFieldUpdater.newUpdater
57	<	(AtomicIntegerFieldUpdaterTest.class, "w");
52	>	try {
53	>	updaterFor("w");
54		shouldThrow();
55	<	}
60	<	catch (RuntimeException rt) {}
55	>	} catch (RuntimeException success) {}
56		}
57
58		/**
59	<	*  get returns the last value set or assigned
59	>	* get returns the last value set or assigned
60		*/
61		public void testGetSet() {
62		AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
63	<	try {
64	<	a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
65	<	} catch (RuntimeException ok) {
66	<	return;
67	<	}
68	<	x = 1;
69	<	assertEquals(1,a.get(this));
70	<	a.set(this,2);
71	<	assertEquals(2,a.get(this));
72	<	a.set(this,-3);
73	<	assertEquals(-3,a.get(this));
74	<
63	>	a = updaterFor("x");
64	>	x = 1;
65	>	assertEquals(1, a.get(this));
66	>	a.set(this, 2);
67	>	assertEquals(2, a.get(this));
68	>	a.set(this, -3);
69	>	assertEquals(-3, a.get(this));
70	>	}
71	>
72	>	/**
73	>	* get returns the last value lazySet by same thread
74	>	*/
75	>	public void testGetLazySet() {
76	>	AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
77	>	a = updaterFor("x");
78	>	x = 1;
79	>	assertEquals(1, a.get(this));
80	>	a.lazySet(this, 2);
81	>	assertEquals(2, a.get(this));
82	>	a.lazySet(this, -3);
83	>	assertEquals(-3, a.get(this));
84		}
85	+
86		/**
87		* compareAndSet succeeds in changing value if equal to expected else fails
88		*/
89		public void testCompareAndSet() {
90		AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
91	<	try {
92	<	a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
93	<	} catch (RuntimeException ok) {
94	<	return;
95	<	}
96	<	x = 1;
97	<	assertTrue(a.compareAndSet(this,1,2));
98	<	assertTrue(a.compareAndSet(this,2,-4));
99	<	assertEquals(-4,a.get(this));
95	<	assertFalse(a.compareAndSet(this,-5,7));
96	<	assertFalse((7 == a.get(this)));
97	<	assertTrue(a.compareAndSet(this,-4,7));
98	<	assertEquals(7,a.get(this));
91	>	a = updaterFor("x");
92	>	x = 1;
93	>	assertTrue(a.compareAndSet(this, 1, 2));
94	>	assertTrue(a.compareAndSet(this, 2, -4));
95	>	assertEquals(-4, a.get(this));
96	>	assertFalse(a.compareAndSet(this, -5, 7));
97	>	assertEquals(-4, a.get(this));
98	>	assertTrue(a.compareAndSet(this, -4, 7));
99	>	assertEquals(7, a.get(this));
100		}
101
101	–
102		/**
103		* compareAndSet in one thread enables another waiting for value
104		* to succeed
105		*/
106	<	public void testCompareAndSetInMultipleThreads() {
106	>	public void testCompareAndSetInMultipleThreads() throws Exception {
107		x = 1;
108	<	final AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest>a;
109	<	try {
110	<	a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
111	<	} catch (RuntimeException ok) {
112	<	return;
113	<	}
114	<
115	<	Thread t = new Thread(new Runnable() {
116	<	public void run() {
117	<	while(!a.compareAndSet(AtomicIntegerFieldUpdaterTest.this, 2, 3)) Thread.yield();
118	<	}});
119	<	try {
120	<	t.start();
121	<	assertTrue(a.compareAndSet(this, 1, 2));
122	<	t.join(LONG_DELAY_MS);
123	<	assertFalse(t.isAlive());
124	<	assertEquals(a.get(this), 3);
125	<	}
126	<	catch(Exception e) {
127	<	unexpectedException();
128	<	}
108	>	final AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
109	>	a = updaterFor("x");
110	>
111	>	Thread t = new Thread(new CheckedRunnable() {
112	>	public void realRun() {
113	>	while (!a.compareAndSet(AtomicIntegerFieldUpdaterTest.this, 2, 3))
114	>	Thread.yield();
115	>	}});
116	>
117	>	t.start();
118	>	assertTrue(a.compareAndSet(this, 1, 2));
119	>	t.join(LONG_DELAY_MS);
120	>	assertFalse(t.isAlive());
121	>	assertEquals(3, a.get(this));
122		}
123
124		/**
125		* repeated weakCompareAndSet succeeds in changing value when equal
126	<	* to expected
126	>	* to expected
127		*/
128		public void testWeakCompareAndSet() {
129		AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
130	<	try {
138	<	a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
139	<	} catch (RuntimeException ok) {
140	<	return;
141	<	}
130	>	a = updaterFor("x");
131		x = 1;
132	<	while(!a.weakCompareAndSet(this,1,2));
133	<	while(!a.weakCompareAndSet(this,2,-4));
134	<	assertEquals(-4,a.get(this));
135	<	while(!a.weakCompareAndSet(this,-4,7));
136	<	assertEquals(7,a.get(this));
132	>	while (!a.weakCompareAndSet(this, 1, 2));
133	>	while (!a.weakCompareAndSet(this, 2, -4));
134	>	assertEquals(-4, a.get(this));
135	>	while (!a.weakCompareAndSet(this, -4, 7));
136	>	assertEquals(7, a.get(this));
137		}
138
139		/**
140	<	*  getAndSet returns previous value and sets to given value
140	>	* getAndSet returns previous value and sets to given value
141		*/
142		public void testGetAndSet() {
143		AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
144	<	try {
145	<	a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
146	<	} catch (RuntimeException ok) {
147	<	return;
148	<	}
160	<	x = 1;
161	<	assertEquals(1,a.getAndSet(this, 0));
162	<	assertEquals(0,a.getAndSet(this,-10));
163	<	assertEquals(-10,a.getAndSet(this,1));
144	>	a = updaterFor("x");
145	>	x = 1;
146	>	assertEquals(1, a.getAndSet(this, 0));
147	>	assertEquals(0, a.getAndSet(this, -10));
148	>	assertEquals(-10, a.getAndSet(this, 1));
149		}
150
151		/**
#	Line 168 | Line 153 | public class AtomicIntegerFieldUpdaterTe
153		*/
154		public void testGetAndAdd() {
155		AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
156	<	try {
157	<	a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
158	<	} catch (RuntimeException ok) {
159	<	return;
160	<	}
161	<	x = 1;
177	<	assertEquals(1,a.getAndAdd(this,2));
178	<	assertEquals(3,a.get(this));
179	<	assertEquals(3,a.getAndAdd(this,-4));
180	<	assertEquals(-1,a.get(this));
156	>	a = updaterFor("x");
157	>	x = 1;
158	>	assertEquals(1, a.getAndAdd(this, 2));
159	>	assertEquals(3, a.get(this));
160	>	assertEquals(3, a.getAndAdd(this, -4));
161	>	assertEquals(-1, a.get(this));
162		}
163
164		/**
#	Line 185 | Line 166 | public class AtomicIntegerFieldUpdaterTe
166		*/
167		public void testGetAndDecrement() {
168		AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
169	<	try {
170	<	a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
171	<	} catch (RuntimeException ok) {
172	<	return;
173	<	}
193	<	x = 1;
194	<	assertEquals(1,a.getAndDecrement(this));
195	<	assertEquals(0,a.getAndDecrement(this));
196	<	assertEquals(-1,a.getAndDecrement(this));
169	>	a = updaterFor("x");
170	>	x = 1;
171	>	assertEquals(1, a.getAndDecrement(this));
172	>	assertEquals(0, a.getAndDecrement(this));
173	>	assertEquals(-1, a.getAndDecrement(this));
174		}
175
176		/**
#	Line 201 | Line 178 | public class AtomicIntegerFieldUpdaterTe
178		*/
179		public void testGetAndIncrement() {
180		AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
181	<	try {
182	<	a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
183	<	} catch (RuntimeException ok) {
184	<	return;
185	<	}
186	<	x = 1;
187	<	assertEquals(1,a.getAndIncrement(this));
188	<	assertEquals(2,a.get(this));
189	<	a.set(this,-2);
213	<	assertEquals(-2,a.getAndIncrement(this));
214	<	assertEquals(-1,a.getAndIncrement(this));
215	<	assertEquals(0,a.getAndIncrement(this));
216	<	assertEquals(1,a.get(this));
181	>	a = updaterFor("x");
182	>	x = 1;
183	>	assertEquals(1, a.getAndIncrement(this));
184	>	assertEquals(2, a.get(this));
185	>	a.set(this, -2);
186	>	assertEquals(-2, a.getAndIncrement(this));
187	>	assertEquals(-1, a.getAndIncrement(this));
188	>	assertEquals(0, a.getAndIncrement(this));
189	>	assertEquals(1, a.get(this));
190		}
191
192		/**
#	Line 221 | Line 194 | public class AtomicIntegerFieldUpdaterTe
194		*/
195		public void testAddAndGet() {
196		AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
197	<	try {
198	<	a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
199	<	} catch (RuntimeException ok) {
200	<	return;
201	<	}
202	<	x = 1;
230	<	assertEquals(3,a.addAndGet(this,2));
231	<	assertEquals(3,a.get(this));
232	<	assertEquals(-1,a.addAndGet(this,-4));
233	<	assertEquals(-1,a.get(this));
197	>	a = updaterFor("x");
198	>	x = 1;
199	>	assertEquals(3, a.addAndGet(this, 2));
200	>	assertEquals(3, a.get(this));
201	>	assertEquals(-1, a.addAndGet(this, -4));
202	>	assertEquals(-1, a.get(this));
203		}
204
205		/**
#	Line 238 | Line 207 | public class AtomicIntegerFieldUpdaterTe
207		*/
208		public void testDecrementAndGet() {
209		AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
210	<	try {
211	<	a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
212	<	} catch (RuntimeException ok) {
213	<	return;
214	<	}
215	<	x = 1;
247	<	assertEquals(0,a.decrementAndGet(this));
248	<	assertEquals(-1,a.decrementAndGet(this));
249	<	assertEquals(-2,a.decrementAndGet(this));
250	<	assertEquals(-2,a.get(this));
210	>	a = updaterFor("x");
211	>	x = 1;
212	>	assertEquals(0, a.decrementAndGet(this));
213	>	assertEquals(-1, a.decrementAndGet(this));
214	>	assertEquals(-2, a.decrementAndGet(this));
215	>	assertEquals(-2, a.get(this));
216		}
217
218		/**
#	Line 255 | Line 220 | public class AtomicIntegerFieldUpdaterTe
220		*/
221		public void testIncrementAndGet() {
222		AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
223	<	try {
224	<	a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
225	<	} catch (RuntimeException ok) {
226	<	return;
227	<	}
228	<	x = 1;
229	<	assertEquals(2,a.incrementAndGet(this));
230	<	assertEquals(2,a.get(this));
231	<	a.set(this,-2);
267	<	assertEquals(-1,a.incrementAndGet(this));
268	<	assertEquals(0,a.incrementAndGet(this));
269	<	assertEquals(1,a.incrementAndGet(this));
270	<	assertEquals(1,a.get(this));
223	>	a = updaterFor("x");
224	>	x = 1;
225	>	assertEquals(2, a.incrementAndGet(this));
226	>	assertEquals(2, a.get(this));
227	>	a.set(this, -2);
228	>	assertEquals(-1, a.incrementAndGet(this));
229	>	assertEquals(0, a.incrementAndGet(this));
230	>	assertEquals(1, a.incrementAndGet(this));
231	>	assertEquals(1, a.get(this));
232		}
233
234		}

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