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
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
/*
* Copyright (C) 2007 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 static org.junit.Assert.assertThrows;
import com.google.common.collect.ImmutableClassToInstanceMapTest.Impl;
import com.google.common.collect.ImmutableClassToInstanceMapTest.TestClassToInstanceMapGenerator;
import com.google.common.collect.testing.MapTestSuiteBuilder;
import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.CollectionSize;
import com.google.common.collect.testing.features.MapFeature;
import java.util.Map;
import java.util.Map.Entry;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
/**
* Unit test of {@link MutableClassToInstanceMap}.
*
* @author Kevin Bourrillion
*/
public class MutableClassToInstanceMapTest extends TestCase {
public static Test suite() {
TestSuite suite = new TestSuite();
suite.addTestSuite(MutableClassToInstanceMapTest.class);
suite.addTest(
MapTestSuiteBuilder.using(
new TestClassToInstanceMapGenerator() {
// Other tests will verify what real, warning-free usage looks like
// but here we have to do some serious fudging
@Override
@SuppressWarnings("unchecked")
public Map<Class, Impl> create(Object... elements) {
MutableClassToInstanceMap<Impl> map = MutableClassToInstanceMap.create();
for (Object object : elements) {
Entry<Class, Impl> entry = (Entry<Class, Impl>) object;
map.putInstance(entry.getKey(), entry.getValue());
}
return (Map) map;
}
})
.named("MutableClassToInstanceMap")
.withFeatures(
MapFeature.GENERAL_PURPOSE,
MapFeature.RESTRICTS_KEYS,
MapFeature.ALLOWS_NULL_VALUES,
CollectionSize.ANY,
CollectionFeature.SERIALIZABLE,
CollectionFeature.SUPPORTS_ITERATOR_REMOVE,
MapFeature.ALLOWS_ANY_NULL_QUERIES)
.createTestSuite());
return suite;
}
private ClassToInstanceMap<Number> map;
@Override
protected void setUp() throws Exception {
map = MutableClassToInstanceMap.create();
}
public void testConstraint() {
/**
* We'll give ourselves a pass on testing all the possible ways of breaking the constraint,
* because we know that newClassMap() is implemented using ConstrainedMap which is itself
* well-tested. A purist would object to this, but what can I say, we're dirty cheaters.
*/
map.put(Integer.class, new Integer(5));
assertThrows(ClassCastException.class, () -> map.put(Double.class, new Long(42)));
// Won't compile: map.put(String.class, "x");
}
public void testPutAndGetInstance() {
assertNull(map.putInstance(Integer.class, new Integer(5)));
Integer oldValue = map.putInstance(Integer.class, new Integer(7));
assertEquals(5, (int) oldValue);
Integer newValue = map.getInstance(Integer.class);
assertEquals(7, (int) newValue);
// Won't compile: map.putInstance(Double.class, new Long(42));
}
public void testNull() {
assertThrows(NullPointerException.class, () -> map.put(null, new Integer(1)));
map.putInstance(Integer.class, null);
assertNull(map.get(Integer.class));
assertNull(map.getInstance(Integer.class));
map.put(Long.class, null);
assertNull(map.get(Long.class));
assertNull(map.getInstance(Long.class));
}
public void testPrimitiveAndWrapper() {
assertNull(map.getInstance(int.class));
assertNull(map.getInstance(Integer.class));
assertNull(map.putInstance(int.class, 0));
assertNull(map.putInstance(Integer.class, 1));
assertEquals(2, map.size());
assertEquals(0, (int) map.getInstance(int.class));
assertEquals(1, (int) map.getInstance(Integer.class));
assertEquals(0, (int) map.putInstance(int.class, null));
assertEquals(1, (int) map.putInstance(Integer.class, null));
assertNull(map.getInstance(int.class));
assertNull(map.getInstance(Integer.class));
assertEquals(2, map.size());
}
}
|
