1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
/*
* ============LICENSE_START=======================================================
* ONAP
* ================================================================================
* Copyright (C) 2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============LICENSE_END=========================================================
*/
package org.onap.policy.drools.utils;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import org.junit.Test;
public class ReferenceTest {
@Test
public void testReference() {
Reference<Integer> val = new Reference<>(null);
assertNull(val.get());
val = new Reference<>(10);
assertEquals(10, val.get().intValue());
}
@Test
public void testGet_testSet() {
Reference<Integer> val = new Reference<>(null);
assertNull(val.get());
val.set(20);
assertEquals(20, val.get().intValue());
val.set(30);
assertEquals(30, val.get().intValue());
}
@Test
public void testCompareAndSet() {
Reference<Integer> val = new Reference<>(null);
Integer valCompare = 100;
// try an incorrect value - should fail and leave value unchanged
assertFalse(val.compareAndSet(500, valCompare));
assertNull(val.get());
assertTrue(val.compareAndSet(null, valCompare));
assertEquals(valCompare, val.get());
// try an incorrect value - should fail and leave value unchanged
Integer v2 = 200;
assertFalse(val.compareAndSet(600, v2));
assertEquals(valCompare, val.get());
// now try again, this time with the correct value
assertTrue(val.compareAndSet(valCompare, v2));
assertEquals(v2, val.get());
Integer v3 = 300;
assertTrue(val.compareAndSet(v2, v3));
assertEquals(v3, val.get());
// try setting it back to null
assertTrue(val.compareAndSet(v3, null));
assertNull(val.get());
}
}
|
