ViewVC Help

View File | Revision Log | Show Annotations | Download File | Root Listing

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

Comparing jsr166/src/test/tck/AtomicReferenceTest.java (file contents):
Revision 1.5 by dl, Thu Sep 25 11:02:41 2003 UTC vs.
Revision 1.13 by jsr166, Tue Nov 17 06:58:50 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 junit.framework.*;
#	Line 20 | 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 28 | 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 36 | 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);
44		assertEquals(two,ai.get());
45		ai.set(m3);
46		assertEquals(m3,ai.get());
46	–
47		}
48	+
49	+	/**
50	+	* get returns the last value lazySet in same thread
51	+	*/
52	+	public void testGetLazySet() {
53	+	AtomicReference ai = new AtomicReference(one);
54	+	assertEquals(one,ai.get());
55	+	ai.lazySet(two);
56	+	assertEquals(two,ai.get());
57	+	ai.lazySet(m3);
58	+	assertEquals(m3,ai.get());
59	+	}
60	+
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 63 | 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	<	}
79	<	catch(Exception e) {
80	<	unexpectedException();
81	<	}
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 107 | 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();
123	<	assertEquals(l.get(), r.get());
124	<	} catch(Exception e){
125	<	unexpectedException();
126	<	}
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	<	}
135	>	/**
136	>	* toString returns current value.
137	>	*/
138	>	public void testToString() {
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	+	}

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines