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
134
135
136
137
138
139
140
141
|
/*
* Copyright (C) 2010 Google Inc.
*
* 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.gson.functional;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonSyntaxException;
import com.google.gson.reflect.TypeToken;
import java.lang.reflect.Type;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;
import junit.framework.TestCase;
public class MapAsArrayTypeAdapterTest extends TestCase {
public void testSerializeComplexMapWithTypeAdapter() {
Type type = new TypeToken<Map<Point, String>>() {}.getType();
Gson gson = new GsonBuilder()
.enableComplexMapKeySerialization()
.create();
Map<Point, String> original = new LinkedHashMap<Point, String>();
original.put(new Point(5, 5), "a");
original.put(new Point(8, 8), "b");
String json = gson.toJson(original, type);
assertEquals("[[{\"x\":5,\"y\":5},\"a\"],[{\"x\":8,\"y\":8},\"b\"]]", json);
assertEquals(original, gson.<Map<Point, String>>fromJson(json, type));
// test that registering a type adapter for one map doesn't interfere with others
Map<String, Boolean> otherMap = new LinkedHashMap<String, Boolean>();
otherMap.put("t", true);
otherMap.put("f", false);
assertEquals("{\"t\":true,\"f\":false}",
gson.toJson(otherMap, Map.class));
assertEquals("{\"t\":true,\"f\":false}",
gson.toJson(otherMap, new TypeToken<Map<String, Boolean>>() {}.getType()));
assertEquals(otherMap, gson.<Object>fromJson("{\"t\":true,\"f\":false}",
new TypeToken<Map<String, Boolean>>() {}.getType()));
}
public void disabled_testTwoTypesCollapseToOneSerialize() {
Gson gson = new GsonBuilder()
.enableComplexMapKeySerialization()
.create();
Map<Number, String> original = new LinkedHashMap<Number, String>();
original.put(new Double(1.0), "a");
original.put(new Float(1.0), "b");
try {
gson.toJson(original, new TypeToken<Map<Number, String>>() {}.getType());
fail(); // we no longer hash keys at serialization time
} catch (JsonSyntaxException expected) {
}
}
public void testTwoTypesCollapseToOneDeserialize() {
Gson gson = new GsonBuilder()
.enableComplexMapKeySerialization()
.create();
String s = "[[\"1.00\",\"a\"],[\"1.0\",\"b\"]]";
try {
gson.fromJson(s, new TypeToken<Map<Double, String>>() {}.getType());
fail();
} catch (JsonSyntaxException expected) {
}
}
public void testMultipleEnableComplexKeyRegistrationHasNoEffect() throws Exception {
Type type = new TypeToken<Map<Point, String>>() {}.getType();
Gson gson = new GsonBuilder()
.enableComplexMapKeySerialization()
.enableComplexMapKeySerialization()
.create();
Map<Point, String> original = new LinkedHashMap<Point, String>();
original.put(new Point(6, 5), "abc");
original.put(new Point(1, 8), "def");
String json = gson.toJson(original, type);
assertEquals("[[{\"x\":6,\"y\":5},\"abc\"],[{\"x\":1,\"y\":8},\"def\"]]", json);
assertEquals(original, gson.<Map<Point, String>>fromJson(json, type));
}
public void testMapWithTypeVariableSerialization() {
Gson gson = new GsonBuilder().enableComplexMapKeySerialization().create();
PointWithProperty<Point> map = new PointWithProperty<Point>();
map.map.put(new Point(2, 3), new Point(4, 5));
Type type = new TypeToken<PointWithProperty<Point>>(){}.getType();
String json = gson.toJson(map, type);
assertEquals("{\"map\":[[{\"x\":2,\"y\":3},{\"x\":4,\"y\":5}]]}", json);
}
public void testMapWithTypeVariableDeserialization() {
Gson gson = new GsonBuilder().enableComplexMapKeySerialization().create();
String json = "{map:[[{x:2,y:3},{x:4,y:5}]]}";
Type type = new TypeToken<PointWithProperty<Point>>(){}.getType();
PointWithProperty<Point> map = gson.fromJson(json, type);
Point key = map.map.keySet().iterator().next();
Point value = map.map.values().iterator().next();
assertEquals(new Point(2, 3), key);
assertEquals(new Point(4, 5), value);
}
static class Point {
int x;
int y;
Point(int x, int y) {
this.x = x;
this.y = y;
}
Point() {}
@Override public boolean equals(Object o) {
return o instanceof Point && ((Point) o).x == x && ((Point) o).y == y;
}
@Override public int hashCode() {
return x * 37 + y;
}
@Override public String toString() {
return "(" + x + "," + y + ")";
}
}
static class PointWithProperty<T> {
Map<Point, T> map = new HashMap<Point, T>();
}
}
|
