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

Comparing jsr166/src/test/tck/AtomicLongTest.java (file contents):
Revision 1.1 by dl, Sun Aug 31 19:24:53 2003 UTC vs.
Revision 1.32 by jsr166, Fri Jun 17 19:00:48 2016 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/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
9	<	import java.util.concurrent.atomic.*;
9	>	import java.util.concurrent.atomic.AtomicLong;
10
11	<	public class AtomicLongTest extends TestCase {
12	<	public static void main (String[] args) {
13	<	junit.textui.TestRunner.run (suite());
11	>	import junit.framework.Test;
12	>	import junit.framework.TestSuite;
13	>
14	>	public class AtomicLongTest extends JSR166TestCase {
15	>	public static void main(String[] args) {
16	>	main(suite(), args);
17		}
18		public static Test suite() {
19		return new TestSuite(AtomicLongTest.class);
20		}
21
22	<	public void testConstructor(){
23	<	AtomicLong ai = new AtomicLong(1);
24	<	assertEquals(1,ai.get());
25	<	}
26	<
27	<	public void testConstructor2(){
22	>	final long[] VALUES = {
23	>	Long.MIN_VALUE,
24	>	Integer.MIN_VALUE, -1, 0, 1, 42, Integer.MAX_VALUE,
25	>	Long.MAX_VALUE,
26	>	};
27	>
28	>	/**
29	>	* constructor initializes to given value
30	>	*/
31	>	public void testConstructor() {
32	>	AtomicLong ai = new AtomicLong(1);
33	>	assertEquals(1, ai.get());
34	>	}
35	>
36	>	/**
37	>	* default constructed initializes to zero
38	>	*/
39	>	public void testConstructor2() {
40		AtomicLong ai = new AtomicLong();
41	<	assertEquals(0,ai.get());
27	<	}
28	<
29	<	public void testGetSet(){
30	<	AtomicLong ai = new AtomicLong(1);
31	<	assertEquals(1,ai.get());
32	<	ai.set(2);
33	<	assertEquals(2,ai.get());
34	<	ai.set(-3);
35	<	assertEquals(-3,ai.get());
36	<
37	<	}
38	<	public void testCompareAndSet(){
39	<	AtomicLong ai = new AtomicLong(1);
40	<	assertTrue(ai.compareAndSet(1,2));
41	<	assertTrue(ai.compareAndSet(2,-4));
42	<	assertEquals(-4,ai.get());
43	<	assertFalse(ai.compareAndSet(-5,7));
44	<	assertFalse((7 == ai.get()));
45	<	assertTrue(ai.compareAndSet(-4,7));
46	<	assertEquals(7,ai.get());
47	<	}
48	<
49	<	public void testWeakCompareAndSet(){
50	<	AtomicLong ai = new AtomicLong(1);
51	<	while(!ai.weakCompareAndSet(1,2));
52	<	while(!ai.weakCompareAndSet(2,-4));
53	<	assertEquals(-4,ai.get());
54	<	while(!ai.weakCompareAndSet(-4,7));
55	<	assertEquals(7,ai.get());
56	<	}
57	<
58	<	public void testGetAndSet(){
59	<	AtomicLong ai = new AtomicLong(1);
60	<	assertEquals(1,ai.getAndSet(0));
61	<	assertEquals(0,ai.getAndSet(-10));
62	<	assertEquals(-10,ai.getAndSet(1));
41	>	assertEquals(0, ai.get());
42		}
43
44	<	public void testGetAndAdd(){
45	<	AtomicLong ai = new AtomicLong(1);
46	<	assertEquals(1,ai.getAndAdd(2));
47	<	assertEquals(3,ai.get());
48	<	assertEquals(3,ai.getAndAdd(-4));
49	<	assertEquals(-1,ai.get());
50	<	}
51	<
52	<	public void testGetAndDecrement(){
53	<	AtomicLong ai = new AtomicLong(1);
54	<	assertEquals(1,ai.getAndDecrement());
55	<	assertEquals(0,ai.getAndDecrement());
56	<	assertEquals(-1,ai.getAndDecrement());
44	>	/**
45	>	* get returns the last value set
46	>	*/
47	>	public void testGetSet() {
48	>	AtomicLong ai = new AtomicLong(1);
49	>	assertEquals(1, ai.get());
50	>	ai.set(2);
51	>	assertEquals(2, ai.get());
52	>	ai.set(-3);
53	>	assertEquals(-3, ai.get());
54	>	}
55	>
56	>	/**
57	>	* get returns the last value lazySet in same thread
58	>	*/
59	>	public void testGetLazySet() {
60	>	AtomicLong ai = new AtomicLong(1);
61	>	assertEquals(1, ai.get());
62	>	ai.lazySet(2);
63	>	assertEquals(2, ai.get());
64	>	ai.lazySet(-3);
65	>	assertEquals(-3, ai.get());
66	>	}
67	>
68	>	/**
69	>	* compareAndSet succeeds in changing value if equal to expected else fails
70	>	*/
71	>	public void testCompareAndSet() {
72	>	AtomicLong ai = new AtomicLong(1);
73	>	assertTrue(ai.compareAndSet(1, 2));
74	>	assertTrue(ai.compareAndSet(2, -4));
75	>	assertEquals(-4, ai.get());
76	>	assertFalse(ai.compareAndSet(-5, 7));
77	>	assertEquals(-4, ai.get());
78	>	assertTrue(ai.compareAndSet(-4, 7));
79	>	assertEquals(7, ai.get());
80	>	}
81	>
82	>	/**
83	>	* compareAndSet in one thread enables another waiting for value
84	>	* to succeed
85	>	*/
86	>	public void testCompareAndSetInMultipleThreads() throws Exception {
87	>	final AtomicLong ai = new AtomicLong(1);
88	>	Thread t = new Thread(new CheckedRunnable() {
89	>	public void realRun() {
90	>	while (!ai.compareAndSet(2, 3))
91	>	Thread.yield();
92	>	}});
93	>
94	>	t.start();
95	>	assertTrue(ai.compareAndSet(1, 2));
96	>	t.join(LONG_DELAY_MS);
97	>	assertFalse(t.isAlive());
98	>	assertEquals(3, ai.get());
99	>	}
100	>
101	>	/**
102	>	* repeated weakCompareAndSet succeeds in changing value when equal
103	>	* to expected
104	>	*/
105	>	public void testWeakCompareAndSet() {
106	>	AtomicLong ai = new AtomicLong(1);
107	>	do {} while (!ai.weakCompareAndSet(1, 2));
108	>	do {} while (!ai.weakCompareAndSet(2, -4));
109	>	assertEquals(-4, ai.get());
110	>	do {} while (!ai.weakCompareAndSet(-4, 7));
111	>	assertEquals(7, ai.get());
112	>	}
113	>
114	>	/**
115	>	* getAndSet returns previous value and sets to given value
116	>	*/
117	>	public void testGetAndSet() {
118	>	AtomicLong ai = new AtomicLong(1);
119	>	assertEquals(1, ai.getAndSet(0));
120	>	assertEquals(0, ai.getAndSet(-10));
121	>	assertEquals(-10, ai.getAndSet(1));
122	>	}
123	>
124	>	/**
125	>	* getAndAdd returns previous value and adds given value
126	>	*/
127	>	public void testGetAndAdd() {
128	>	AtomicLong ai = new AtomicLong(1);
129	>	assertEquals(1, ai.getAndAdd(2));
130	>	assertEquals(3, ai.get());
131	>	assertEquals(3, ai.getAndAdd(-4));
132	>	assertEquals(-1, ai.get());
133	>	}
134	>
135	>	/**
136	>	* getAndDecrement returns previous value and decrements
137	>	*/
138	>	public void testGetAndDecrement() {
139	>	AtomicLong ai = new AtomicLong(1);
140	>	assertEquals(1, ai.getAndDecrement());
141	>	assertEquals(0, ai.getAndDecrement());
142	>	assertEquals(-1, ai.getAndDecrement());
143	>	}
144	>
145	>	/**
146	>	* getAndIncrement returns previous value and increments
147	>	*/
148	>	public void testGetAndIncrement() {
149	>	AtomicLong ai = new AtomicLong(1);
150	>	assertEquals(1, ai.getAndIncrement());
151	>	assertEquals(2, ai.get());
152	>	ai.set(-2);
153	>	assertEquals(-2, ai.getAndIncrement());
154	>	assertEquals(-1, ai.getAndIncrement());
155	>	assertEquals(0, ai.getAndIncrement());
156	>	assertEquals(1, ai.get());
157	>	}
158	>
159	>	/**
160	>	* addAndGet adds given value to current, and returns current value
161	>	*/
162	>	public void testAddAndGet() {
163	>	AtomicLong ai = new AtomicLong(1);
164	>	assertEquals(3, ai.addAndGet(2));
165	>	assertEquals(3, ai.get());
166	>	assertEquals(-1, ai.addAndGet(-4));
167	>	assertEquals(-1, ai.get());
168	>	}
169	>
170	>	/**
171	>	* decrementAndGet decrements and returns current value
172	>	*/
173	>	public void testDecrementAndGet() {
174	>	AtomicLong ai = new AtomicLong(1);
175	>	assertEquals(0, ai.decrementAndGet());
176	>	assertEquals(-1, ai.decrementAndGet());
177	>	assertEquals(-2, ai.decrementAndGet());
178	>	assertEquals(-2, ai.get());
179	>	}
180	>
181	>	/**
182	>	* incrementAndGet increments and returns current value
183	>	*/
184	>	public void testIncrementAndGet() {
185	>	AtomicLong ai = new AtomicLong(1);
186	>	assertEquals(2, ai.incrementAndGet());
187	>	assertEquals(2, ai.get());
188	>	ai.set(-2);
189	>	assertEquals(-1, ai.incrementAndGet());
190	>	assertEquals(0, ai.incrementAndGet());
191	>	assertEquals(1, ai.incrementAndGet());
192	>	assertEquals(1, ai.get());
193	>	}
194	>
195	>	/**
196	>	* a deserialized serialized atomic holds same value
197	>	*/
198	>	public void testSerialization() throws Exception {
199	>	AtomicLong x = new AtomicLong();
200	>	AtomicLong y = serialClone(x);
201	>	assertNotSame(x, y);
202	>	x.set(-22);
203	>	AtomicLong z = serialClone(x);
204	>	assertNotSame(y, z);
205	>	assertEquals(-22, x.get());
206	>	assertEquals(0, y.get());
207	>	assertEquals(-22, z.get());
208	>	}
209	>
210	>	/**
211	>	* toString returns current value.
212	>	*/
213	>	public void testToString() {
214	>	AtomicLong ai = new AtomicLong();
215	>	assertEquals("0", ai.toString());
216	>	for (long x : VALUES) {
217	>	ai.set(x);
218	>	assertEquals(Long.toString(x), ai.toString());
219	>	}
220		}
221
222	<	public void testGetAndIncrement(){
223	<	AtomicLong ai = new AtomicLong(1);
224	<	assertEquals(1,ai.getAndIncrement());
225	<	assertEquals(2,ai.get());
226	<	ai.set(-2);
227	<	assertEquals(-2,ai.getAndIncrement());
228	<	assertEquals(-1,ai.getAndIncrement());
229	<	assertEquals(0,ai.getAndIncrement());
230	<	assertEquals(1,ai.get());
222	>	/**
223	>	* intValue returns current value.
224	>	*/
225	>	public void testIntValue() {
226	>	AtomicLong ai = new AtomicLong();
227	>	assertEquals(0, ai.intValue());
228	>	for (long x : VALUES) {
229	>	ai.set(x);
230	>	assertEquals((int)x, ai.intValue());
231	>	}
232		}
233
234	<	public void testAddAndGet(){
235	<	AtomicLong ai = new AtomicLong(1);
236	<	assertEquals(3,ai.addAndGet(2));
237	<	assertEquals(3,ai.get());
238	<	assertEquals(-1,ai.addAndGet(-4));
239	<	assertEquals(-1,ai.get());
234	>	/**
235	>	* longValue returns current value.
236	>	*/
237	>	public void testLongValue() {
238	>	AtomicLong ai = new AtomicLong();
239	>	assertEquals(0L, ai.longValue());
240	>	for (long x : VALUES) {
241	>	ai.set(x);
242	>	assertEquals(x, ai.longValue());
243	>	}
244		}
245
246	<	public void testDecrementAndGet(){
247	<	AtomicLong ai = new AtomicLong(1);
248	<	assertEquals(0,ai.decrementAndGet());
249	<	assertEquals(-1,ai.decrementAndGet());
250	<	assertEquals(-2,ai.decrementAndGet());
251	<	assertEquals(-2,ai.get());
246	>	/**
247	>	* floatValue returns current value.
248	>	*/
249	>	public void testFloatValue() {
250	>	AtomicLong ai = new AtomicLong();
251	>	assertEquals(0.0f, ai.floatValue());
252	>	for (long x : VALUES) {
253	>	ai.set(x);
254	>	assertEquals((float)x, ai.floatValue());
255	>	}
256		}
257
258	<	public void testIncrementAndGet(){
259	<	AtomicLong ai = new AtomicLong(1);
260	<	assertEquals(2,ai.incrementAndGet());
261	<	assertEquals(2,ai.get());
262	<	ai.set(-2);
263	<	assertEquals(-1,ai.incrementAndGet());
264	<	assertEquals(0,ai.incrementAndGet());
265	<	assertEquals(1,ai.incrementAndGet());
266	<	assertEquals(1,ai.get());
258	>	/**
259	>	* doubleValue returns current value.
260	>	*/
261	>	public void testDoubleValue() {
262	>	AtomicLong ai = new AtomicLong();
263	>	assertEquals(0.0d, ai.doubleValue());
264	>	for (long x : VALUES) {
265	>	ai.set(x);
266	>	assertEquals((double)x, ai.doubleValue());
267	>	}
268		}
269
118	–
270		}

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