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

Comparing jsr166/src/test/tck/AtomicReferenceTest.java (file contents):
Revision 1.8 by dl, Wed May 25 14:27:37 2005 UTC vs.
Revision 1.13 by jsr166, Tue Nov 17 06:58:50 2009 UTC

#	Line 2 | Line 2
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.
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9		import junit.framework.*;
#	Line 21 | Line 21 | public class AtomicReferenceTest extends
21		/**
22		* constructor initializes to given value
23		*/
24	<	public void testConstructor(){
24	>	public void testConstructor() {
25		AtomicReference ai = new AtomicReference(one);
26		assertEquals(one,ai.get());
27		}
#	Line 29 | Line 29 | public class AtomicReferenceTest extends
29		/**
30		* default constructed initializes to null
31		*/
32	<	public void testConstructor2(){
32	>	public void testConstructor2() {
33		AtomicReference ai = new AtomicReference();
34		assertNull(ai.get());
35		}
#	Line 37 | Line 37 | public class AtomicReferenceTest extends
37		/**
38		* get returns the last value set
39		*/
40	<	public void testGetSet(){
40	>	public void testGetSet() {
41		AtomicReference ai = new AtomicReference(one);
42		assertEquals(one,ai.get());
43		ai.set(two);
#	Line 49 | Line 49 | public class AtomicReferenceTest extends
49		/**
50		* get returns the last value lazySet in same thread
51		*/
52	<	public void testGetLazySet(){
52	>	public void testGetLazySet() {
53		AtomicReference ai = new AtomicReference(one);
54		assertEquals(one,ai.get());
55		ai.lazySet(two);
#	Line 61 | Line 61 | public class AtomicReferenceTest extends
61		/**
62		* compareAndSet succeeds in changing value if equal to expected else fails
63		*/
64	<	public void testCompareAndSet(){
64	>	public void testCompareAndSet() {
65		AtomicReference ai = new AtomicReference(one);
66		assertTrue(ai.compareAndSet(one,two));
67		assertTrue(ai.compareAndSet(two,m4));
#	Line 76 | Line 76 | public class AtomicReferenceTest extends
76		* compareAndSet in one thread enables another waiting for value
77		* to succeed
78		*/
79	<	public void testCompareAndSetInMultipleThreads() {
79	>	public void testCompareAndSetInMultipleThreads() throws Exception {
80		final AtomicReference ai = new AtomicReference(one);
81	<	Thread t = new Thread(new Runnable() {
82	<	public void run() {
83	<	while(!ai.compareAndSet(two, three)) Thread.yield();
84	<	}});
85	<	try {
86	<	t.start();
87	<	assertTrue(ai.compareAndSet(one, two));
88	<	t.join(LONG_DELAY_MS);
89	<	assertFalse(t.isAlive());
90	<	assertEquals(ai.get(), three);
91	<	}
92	<	catch(Exception e) {
93	<	unexpectedException();
94	<	}
81	>	Thread t = new Thread(new CheckedRunnable() {
82	>	public void realRun() {
83	>	while (!ai.compareAndSet(two, three))
84	>	Thread.yield();
85	>	}});
86	>
87	>	t.start();
88	>	assertTrue(ai.compareAndSet(one, two));
89	>	t.join(LONG_DELAY_MS);
90	>	assertFalse(t.isAlive());
91	>	assertEquals(ai.get(), three);
92		}
93
94		/**
95		* repeated weakCompareAndSet succeeds in changing value when equal
96	<	* to expected
96	>	* to expected
97		*/
98	<	public void testWeakCompareAndSet(){
98	>	public void testWeakCompareAndSet() {
99		AtomicReference ai = new AtomicReference(one);
100	<	while(!ai.weakCompareAndSet(one,two));
101	<	while(!ai.weakCompareAndSet(two,m4));
100	>	while (!ai.weakCompareAndSet(one,two));
101	>	while (!ai.weakCompareAndSet(two,m4));
102		assertEquals(m4,ai.get());
103	<	while(!ai.weakCompareAndSet(m4,seven));
103	>	while (!ai.weakCompareAndSet(m4,seven));
104		assertEquals(seven,ai.get());
105		}
106
107		/**
108		* getAndSet returns previous value and sets to given value
109		*/
110	<	public void testGetAndSet(){
110	>	public void testGetAndSet() {
111		AtomicReference ai = new AtomicReference(one);
112		assertEquals(one,ai.getAndSet(zero));
113		assertEquals(zero,ai.getAndSet(m10));
#	Line 120 | Line 117 | public class AtomicReferenceTest extends
117		/**
118		* a deserialized serialized atomic holds same value
119		*/
120	<	public void testSerialization() {
120	>	public void testSerialization() throws Exception {
121		AtomicReference l = new AtomicReference();
122
123	<	try {
124	<	l.set(one);
125	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
126	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
127	<	out.writeObject(l);
128	<	out.close();
129	<
130	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
131	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
132	<	AtomicReference r = (AtomicReference) in.readObject();
136	<	assertEquals(l.get(), r.get());
137	<	} catch(Exception e){
138	<	unexpectedException();
139	<	}
123	>	l.set(one);
124	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
125	>	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
126	>	out.writeObject(l);
127	>	out.close();
128	>
129	>	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
130	>	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
131	>	AtomicReference r = (AtomicReference) in.readObject();
132	>	assertEquals(l.get(), r.get());
133		}
134
135		/**
136		* toString returns current value.
137	<	*/
137	>	*/
138		public void testToString() {
139	<	AtomicReference<Integer> ai = new AtomicReference<Integer>(one);
139	>	AtomicReference<Integer> ai = new AtomicReference<Integer>(one);
140		assertEquals(ai.toString(), one.toString());
141		ai.set(two);
142		assertEquals(ai.toString(), two.toString());
143		}
144
145		}
153	–

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