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Comparing jsr166/src/test/tck/AtomicReferenceArrayTest.java (file contents):
Revision 1.6 by dl, Sat Dec 27 19:26:43 2003 UTC vs.
Revision 1.27 by jsr166, Mon Apr 1 21:03:58 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 junit.framework.*;
10	<	import java.util.concurrent.atomic.*;
11	<	import java.io.*;
10	>	import java.util.Arrays;
11	>	import java.util.concurrent.atomic.AtomicReferenceArray;
12
13	<	public class AtomicReferenceArrayTest extends JSR166TestCase
14	<	{
15	<	public static void main (String[] args) {
16	<	junit.textui.TestRunner.run (suite());
13	>	public class AtomicReferenceArrayTest extends JSR166TestCase {
14	>	public static void main(String[] args) {
15	>	junit.textui.TestRunner.run(suite());
16		}
17		public static Test suite() {
18		return new TestSuite(AtomicReferenceArrayTest.class);
#	Line 22 | Line 21 | public class AtomicReferenceArrayTest ex
21		/**
22		* constructor creates array of given size with all elements null
23		*/
24	<	public void testConstructor(){
25	<	AtomicReferenceArray<Integer> ai = new AtomicReferenceArray<Integer>(SIZE);
26	<	for (int i = 0; i < SIZE; ++i) {
27	<	assertNull(ai.get(i));
24	>	public void testConstructor() {
25	>	AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(SIZE);
26	>	for (int i = 0; i < SIZE; i++) {
27	>	assertNull(aa.get(i));
28		}
29		}
30
31		/**
32	<	* get and set for out of bound indices throw IndexOutOfBoundsException
32	>	* constructor with null array throws NPE
33		*/
34	<	public void testIndexing(){
36	<	AtomicReferenceArray<Integer> ai = new AtomicReferenceArray<Integer>(SIZE);
37	<	try {
38	<	ai.get(SIZE);
39	<	} catch(IndexOutOfBoundsException success){
40	<	}
41	<	try {
42	<	ai.get(-1);
43	<	} catch(IndexOutOfBoundsException success){
44	<	}
34	>	public void testConstructor2NPE() {
35		try {
36	<	ai.set(SIZE, null);
37	<	} catch(IndexOutOfBoundsException success){
36	>	Integer[] a = null;
37	>	AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(a);
38	>	shouldThrow();
39	>	} catch (NullPointerException success) {}
40	>	}
41	>
42	>	/**
43	>	* constructor with array is of same size and has all elements
44	>	*/
45	>	public void testConstructor2() {
46	>	Integer[] a = { two, one, three, four, seven };
47	>	AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(a);
48	>	assertEquals(a.length, aa.length());
49	>	for (int i = 0; i < a.length; i++)
50	>	assertEquals(a[i], aa.get(i));
51	>	}
52	>
53	>	/**
54	>	* Initialize AtomicReferenceArray<Class> with SubClass[]
55	>	*/
56	>	public void testConstructorSubClassArray() {
57	>	Integer[] a = { two, one, three, four, seven };
58	>	AtomicReferenceArray<Number> aa = new AtomicReferenceArray<Number>(a);
59	>	assertEquals(a.length, aa.length());
60	>	for (int i = 0; i < a.length; i++) {
61	>	assertSame(a[i], aa.get(i));
62	>	Long x = Long.valueOf(i);
63	>	aa.set(i, x);
64	>	assertSame(x, aa.get(i));
65		}
66	<	try {
67	<	ai.set(-1, null);
68	<	} catch(IndexOutOfBoundsException success){
66	>	}
67	>
68	>	/**
69	>	* get and set for out of bound indices throw IndexOutOfBoundsException
70	>	*/
71	>	public void testIndexing() {
72	>	AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(SIZE);
73	>	for (int index : new int[] { -1, SIZE }) {
74	>	try {
75	>	aa.get(index);
76	>	shouldThrow();
77	>	} catch (IndexOutOfBoundsException success) {}
78	>	try {
79	>	aa.set(index, null);
80	>	shouldThrow();
81	>	} catch (IndexOutOfBoundsException success) {}
82	>	try {
83	>	aa.lazySet(index, null);
84	>	shouldThrow();
85	>	} catch (IndexOutOfBoundsException success) {}
86	>	try {
87	>	aa.compareAndSet(index, null, null);
88	>	shouldThrow();
89	>	} catch (IndexOutOfBoundsException success) {}
90	>	try {
91	>	aa.weakCompareAndSet(index, null, null);
92	>	shouldThrow();
93	>	} catch (IndexOutOfBoundsException success) {}
94		}
95		}
96
97		/**
98		* get returns the last value set at index
99		*/
100	<	public void testGetSet(){
101	<	AtomicReferenceArray ai = new AtomicReferenceArray(SIZE);
102	<	for (int i = 0; i < SIZE; ++i) {
103	<	ai.set(i, one);
104	<	assertEquals(one,ai.get(i));
105	<	ai.set(i, two);
106	<	assertEquals(two,ai.get(i));
107	<	ai.set(i, m3);
108	<	assertEquals(m3,ai.get(i));
100	>	public void testGetSet() {
101	>	AtomicReferenceArray aa = new AtomicReferenceArray(SIZE);
102	>	for (int i = 0; i < SIZE; i++) {
103	>	aa.set(i, one);
104	>	assertSame(one, aa.get(i));
105	>	aa.set(i, two);
106	>	assertSame(two, aa.get(i));
107	>	aa.set(i, m3);
108	>	assertSame(m3, aa.get(i));
109	>	}
110	>	}
111	>
112	>	/**
113	>	* get returns the last value lazySet at index by same thread
114	>	*/
115	>	public void testGetLazySet() {
116	>	AtomicReferenceArray aa = new AtomicReferenceArray(SIZE);
117	>	for (int i = 0; i < SIZE; i++) {
118	>	aa.lazySet(i, one);
119	>	assertSame(one, aa.get(i));
120	>	aa.lazySet(i, two);
121	>	assertSame(two, aa.get(i));
122	>	aa.lazySet(i, m3);
123	>	assertSame(m3, aa.get(i));
124		}
125		}
126
127		/**
128		* compareAndSet succeeds in changing value if equal to expected else fails
129		*/
130	<	public void testCompareAndSet(){
131	<	AtomicReferenceArray ai = new AtomicReferenceArray(SIZE);
132	<	for (int i = 0; i < SIZE; ++i) {
133	<	ai.set(i, one);
134	<	assertTrue(ai.compareAndSet(i, one,two));
135	<	assertTrue(ai.compareAndSet(i, two,m4));
136	<	assertEquals(m4,ai.get(i));
137	<	assertFalse(ai.compareAndSet(i, m5,seven));
138	<	assertFalse((seven.equals(ai.get(i))));
139	<	assertTrue(ai.compareAndSet(i, m4,seven));
140	<	assertEquals(seven,ai.get(i));
130	>	public void testCompareAndSet() {
131	>	AtomicReferenceArray aa = new AtomicReferenceArray(SIZE);
132	>	for (int i = 0; i < SIZE; i++) {
133	>	aa.set(i, one);
134	>	assertTrue(aa.compareAndSet(i, one, two));
135	>	assertTrue(aa.compareAndSet(i, two, m4));
136	>	assertSame(m4, aa.get(i));
137	>	assertFalse(aa.compareAndSet(i, m5, seven));
138	>	assertSame(m4, aa.get(i));
139	>	assertTrue(aa.compareAndSet(i, m4, seven));
140	>	assertSame(seven, aa.get(i));
141		}
142		}
143
#	Line 88 | Line 145 | public class AtomicReferenceArrayTest ex
145		* compareAndSet in one thread enables another waiting for value
146		* to succeed
147		*/
148	<	public void testCompareAndSetInMultipleThreads() {
148	>	public void testCompareAndSetInMultipleThreads() throws InterruptedException {
149		final AtomicReferenceArray a = new AtomicReferenceArray(1);
150		a.set(0, one);
151	<	Thread t = new Thread(new Runnable() {
152	<	public void run() {
153	<	while(!a.compareAndSet(0, two, three)) Thread.yield();
154	<	}});
155	<	try {
156	<	t.start();
157	<	assertTrue(a.compareAndSet(0, one, two));
158	<	t.join(LONG_DELAY_MS);
159	<	assertFalse(t.isAlive());
160	<	assertEquals(a.get(0), three);
161	<	}
105	<	catch(Exception e) {
106	<	unexpectedException();
107	<	}
151	>	Thread t = new Thread(new CheckedRunnable() {
152	>	public void realRun() {
153	>	while (!a.compareAndSet(0, two, three))
154	>	Thread.yield();
155	>	}});
156	>
157	>	t.start();
158	>	assertTrue(a.compareAndSet(0, one, two));
159	>	t.join(LONG_DELAY_MS);
160	>	assertFalse(t.isAlive());
161	>	assertSame(three, a.get(0));
162		}
163
164		/**
165		* repeated weakCompareAndSet succeeds in changing value when equal
166	<	* to expected
166	>	* to expected
167		*/
168	<	public void testWeakCompareAndSet(){
169	<	AtomicReferenceArray ai = new AtomicReferenceArray(SIZE);
170	<	for (int i = 0; i < SIZE; ++i) {
171	<	ai.set(i, one);
172	<	while(!ai.weakCompareAndSet(i, one,two));
173	<	while(!ai.weakCompareAndSet(i, two,m4));
174	<	assertEquals(m4,ai.get(i));
175	<	while(!ai.weakCompareAndSet(i, m4,seven));
176	<	assertEquals(seven,ai.get(i));
168	>	public void testWeakCompareAndSet() {
169	>	AtomicReferenceArray aa = new AtomicReferenceArray(SIZE);
170	>	for (int i = 0; i < SIZE; i++) {
171	>	aa.set(i, one);
172	>	while (!aa.weakCompareAndSet(i, one, two));
173	>	while (!aa.weakCompareAndSet(i, two, m4));
174	>	assertSame(m4, aa.get(i));
175	>	while (!aa.weakCompareAndSet(i, m4, seven));
176	>	assertSame(seven, aa.get(i));
177		}
178		}
179
180		/**
181		* getAndSet returns previous value and sets to given value at given index
182		*/
183	<	public void testGetAndSet(){
184	<	AtomicReferenceArray ai = new AtomicReferenceArray(SIZE);
185	<	for (int i = 0; i < SIZE; ++i) {
186	<	ai.set(i, one);
187	<	assertEquals(one,ai.getAndSet(i,zero));
188	<	assertEquals(0,ai.getAndSet(i,m10));
189	<	assertEquals(m10,ai.getAndSet(i,one));
183	>	public void testGetAndSet() {
184	>	AtomicReferenceArray aa = new AtomicReferenceArray(SIZE);
185	>	for (int i = 0; i < SIZE; i++) {
186	>	aa.set(i, one);
187	>	assertSame(one, aa.getAndSet(i, zero));
188	>	assertSame(zero, aa.getAndSet(i, m10));
189	>	assertSame(m10, aa.getAndSet(i, one));
190		}
191		}
192
193		/**
194		* a deserialized serialized array holds same values
195		*/
196	<	public void testSerialization() {
197	<	AtomicReferenceArray l = new AtomicReferenceArray(SIZE);
198	<	for (int i = 0; i < SIZE; ++i) {
199	<	l.set(i, new Integer(-i));
196	>	public void testSerialization() throws Exception {
197	>	AtomicReferenceArray x = new AtomicReferenceArray(SIZE);
198	>	for (int i = 0; i < SIZE; i++) {
199	>	x.set(i, new Integer(-i));
200		}
201	<
202	<	try {
203	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
204	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
205	<	out.writeObject(l);
152	<	out.close();
153	<
154	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
155	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
156	<	AtomicReferenceArray r = (AtomicReferenceArray) in.readObject();
157	<	assertEquals(l.length(), r.length());
158	<	for (int i = 0; i < SIZE; ++i) {
159	<	assertEquals(r.get(i), l.get(i));
160	<	}
161	<	} catch(Exception e){
162	<	unexpectedException();
201	>	AtomicReferenceArray y = serialClone(x);
202	>	assertTrue(x != y);
203	>	assertEquals(x.length(), y.length());
204	>	for (int i = 0; i < SIZE; i++) {
205	>	assertEquals(x.get(i), y.get(i));
206		}
207		}
208
209	+	/**
210	+	* toString returns current value.
211	+	*/
212	+	public void testToString() {
213	+	Integer[] a = { two, one, three, four, seven };
214	+	AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(a);
215	+	assertEquals(Arrays.toString(a), aa.toString());
216	+	}
217		}

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