forked from OpenFeign/feign
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathGsonCodecTest.java
More file actions
239 lines (202 loc) · 7.53 KB
/
GsonCodecTest.java
File metadata and controls
239 lines (202 loc) · 7.53 KB
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
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
/*
* Copyright 2013 Netflix, 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 feign.gson;
import com.google.gson.TypeAdapter;
import com.google.gson.reflect.TypeToken;
import com.google.gson.stream.JsonReader;
import com.google.gson.stream.JsonWriter;
import org.junit.Test;
import java.io.IOException;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import feign.RequestTemplate;
import feign.Response;
import static feign.Util.UTF_8;
import static feign.assertj.FeignAssertions.assertThat;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
public class GsonCodecTest {
@Test
public void encodesMapObjectNumericalValuesAsInteger() throws Exception {
Map<String, Object> map = new LinkedHashMap<String, Object>();
map.put("foo", 1);
RequestTemplate template = new RequestTemplate();
new GsonEncoder().encode(map, map.getClass(), template);
assertThat(template).hasBody("" //
+ "{\n" //
+ " \"foo\": 1\n" //
+ "}");
}
@Test
public void decodesMapObjectNumericalValuesAsInteger() throws Exception {
Map<String, Object> map = new LinkedHashMap<String, Object>();
map.put("foo", 1);
Response response = Response.builder()
.status(200)
.reason("OK")
.headers(Collections.<String, Collection<String>>emptyMap())
.body("{\"foo\": 1}", UTF_8)
.build();
assertEquals(new GsonDecoder().decode(response, new TypeToken<Map<String, Object>>() {
}.getType()), map);
}
@Test
public void encodesFormParams() throws Exception {
Map<String, Object> form = new LinkedHashMap<String, Object>();
form.put("foo", 1);
form.put("bar", Arrays.asList(2, 3));
RequestTemplate template = new RequestTemplate();
new GsonEncoder().encode(form, new TypeToken<Map<String, ?>>() {
}.getType(), template);
assertThat(template).hasBody("" //
+ "{\n" //
+ " \"foo\": 1,\n" //
+ " \"bar\": [\n" //
+ " 2,\n" //
+ " 3\n" //
+ " ]\n" //
+ "}");
}
static class Zone extends LinkedHashMap<String, Object> {
Zone() {
// for reflective instantiation.
}
Zone(String name) {
this(name, null);
}
Zone(String name, String id) {
put("name", name);
if (id != null) {
put("id", id);
}
}
private static final long serialVersionUID = 1L;
}
@Test
public void decodes() throws Exception {
List<Zone> zones = new LinkedList<Zone>();
zones.add(new Zone("denominator.io."));
zones.add(new Zone("denominator.io.", "ABCD"));
Response response = Response.builder()
.status(200)
.reason("OK")
.headers(Collections.<String, Collection<String>>emptyMap())
.body(zonesJson, UTF_8)
.build();
assertEquals(zones, new GsonDecoder().decode(response, new TypeToken<List<Zone>>() {
}.getType()));
}
@Test
public void nullBodyDecodesToNull() throws Exception {
Response response = Response.builder()
.status(204)
.reason("OK")
.headers(Collections.<String, Collection<String>>emptyMap())
.build();
assertNull(new GsonDecoder().decode(response, String.class));
}
@Test
public void emptyBodyDecodesToNull() throws Exception {
Response response = Response.builder()
.status(204)
.reason("OK")
.headers(Collections.<String, Collection<String>>emptyMap())
.body(new byte[0])
.build();
assertNull(new GsonDecoder().decode(response, String.class));
}
private String zonesJson = ""//
+ "[\n"//
+ " {\n"//
+ " \"name\": \"denominator.io.\"\n"//
+ " },\n"//
+ " {\n"//
+ " \"name\": \"denominator.io.\",\n"//
+ " \"id\": \"ABCD\"\n"//
+ " }\n"//
+ "]\n";
final TypeAdapter upperZone = new TypeAdapter<Zone>() {
@Override
public void write(JsonWriter out, Zone value) throws IOException {
out.beginObject();
for (Map.Entry<String, Object> entry : value.entrySet()) {
out.name(entry.getKey()).value(entry.getValue().toString().toUpperCase());
}
out.endObject();
}
@Override
public Zone read(JsonReader in) throws IOException {
in.beginObject();
Zone zone = new Zone();
while (in.hasNext()) {
zone.put(in.nextName(), in.nextString().toUpperCase());
}
in.endObject();
return zone;
}
};
@Test
public void customDecoder() throws Exception {
GsonDecoder decoder = new GsonDecoder(Arrays.<TypeAdapter<?>>asList(upperZone));
List<Zone> zones = new LinkedList<Zone>();
zones.add(new Zone("DENOMINATOR.IO."));
zones.add(new Zone("DENOMINATOR.IO.", "ABCD"));
Response response =
Response.builder()
.status(200)
.reason("OK")
.headers(Collections.<String, Collection<String>>emptyMap())
.body(zonesJson, UTF_8)
.build();
assertEquals(zones, decoder.decode(response, new TypeToken<List<Zone>>() {
}.getType()));
}
@Test
public void customEncoder() throws Exception {
GsonEncoder encoder = new GsonEncoder(Arrays.<TypeAdapter<?>>asList(upperZone));
List<Zone> zones = new LinkedList<Zone>();
zones.add(new Zone("denominator.io."));
zones.add(new Zone("denominator.io.", "abcd"));
RequestTemplate template = new RequestTemplate();
encoder.encode(zones, new TypeToken<List<Zone>>() {
}.getType(), template);
assertThat(template).hasBody("" //
+ "[\n" //
+ " {\n" //
+ " \"name\": \"DENOMINATOR.IO.\"\n" //
+ " },\n" //
+ " {\n" //
+ " \"name\": \"DENOMINATOR.IO.\",\n" //
+ " \"id\": \"ABCD\"\n" //
+ " }\n" //
+ "]");
}
/** Enabled via {@link feign.Feign.Builder#decode404()} */
@Test
public void notFoundDecodesToEmpty() throws Exception {
Response response = Response.builder()
.status(404)
.reason("NOT FOUND")
.headers(Collections.<String, Collection<String>>emptyMap())
.build();
assertThat((byte[]) new GsonDecoder().decode(response, byte[].class)).isEmpty();
}
}