-
Notifications
You must be signed in to change notification settings - Fork 10.8k
/
UnmodifiableListIteratorTest.java
119 lines (103 loc) · 2.83 KB
/
UnmodifiableListIteratorTest.java
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
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
/*
* Copyright (C) 2010 The Guava Authors
*
* 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.
*/
package com.google.common.collect;
import com.google.common.annotations.GwtCompatible;
import java.util.Iterator;
import java.util.ListIterator;
import java.util.NoSuchElementException;
import junit.framework.TestCase;
/**
* Tests for UnmodifiableListIterator.
*
* @author Louis Wasserman
*/
@GwtCompatible
@ElementTypesAreNonnullByDefault
public class UnmodifiableListIteratorTest extends TestCase {
@SuppressWarnings("DoNotCall")
public void testRemove() {
Iterator<String> iterator = create();
assertTrue(iterator.hasNext());
assertEquals("a", iterator.next());
try {
iterator.remove();
fail();
} catch (UnsupportedOperationException expected) {
}
}
@SuppressWarnings("DoNotCall")
public void testAdd() {
ListIterator<String> iterator = create();
assertTrue(iterator.hasNext());
assertEquals("a", iterator.next());
assertEquals("b", iterator.next());
assertEquals("b", iterator.previous());
try {
iterator.add("c");
fail();
} catch (UnsupportedOperationException expected) {
}
}
@SuppressWarnings("DoNotCall")
public void testSet() {
ListIterator<String> iterator = create();
assertTrue(iterator.hasNext());
assertEquals("a", iterator.next());
assertEquals("b", iterator.next());
assertEquals("b", iterator.previous());
try {
iterator.set("c");
fail();
} catch (UnsupportedOperationException expected) {
}
}
UnmodifiableListIterator<String> create() {
final String[] array = {"a", "b", "c"};
return new UnmodifiableListIterator<String>() {
int i;
@Override
public boolean hasNext() {
return i < array.length;
}
@Override
public String next() {
if (!hasNext()) {
throw new NoSuchElementException();
}
return array[i++];
}
@Override
public boolean hasPrevious() {
return i > 0;
}
@Override
public int nextIndex() {
return i;
}
@Override
public String previous() {
if (!hasPrevious()) {
throw new NoSuchElementException();
}
return array[--i];
}
@Override
public int previousIndex() {
return i - 1;
}
};
}
}