542 lines
18 KiB
Java
Executable File
542 lines
18 KiB
Java
Executable File
/*
|
|
* Copyright (C) 2008 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 java.lang.reflect.Type;
|
|
import java.util.Collection;
|
|
import java.util.HashMap;
|
|
import java.util.LinkedHashMap;
|
|
import java.util.Map;
|
|
import java.util.TreeMap;
|
|
|
|
import junit.framework.TestCase;
|
|
|
|
import com.google.gson.Gson;
|
|
import com.google.gson.GsonBuilder;
|
|
import com.google.gson.InstanceCreator;
|
|
import com.google.gson.JsonArray;
|
|
import com.google.gson.JsonElement;
|
|
import com.google.gson.JsonParseException;
|
|
import com.google.gson.JsonParser;
|
|
import com.google.gson.JsonPrimitive;
|
|
import com.google.gson.JsonSerializationContext;
|
|
import com.google.gson.JsonSerializer;
|
|
import com.google.gson.JsonSyntaxException;
|
|
import com.google.gson.common.TestTypes;
|
|
import com.google.gson.internal.$Gson$Types;
|
|
import com.google.gson.reflect.TypeToken;
|
|
|
|
/**
|
|
* Functional test for Json serialization and deserialization for Maps
|
|
*
|
|
* @author Inderjeet Singh
|
|
* @author Joel Leitch
|
|
*/
|
|
public class MapTest extends TestCase {
|
|
private Gson gson;
|
|
|
|
@Override
|
|
protected void setUp() throws Exception {
|
|
super.setUp();
|
|
gson = new Gson();
|
|
}
|
|
|
|
public void testMapSerialization() {
|
|
Map<String, Integer> map = new LinkedHashMap<String, Integer>();
|
|
map.put("a", 1);
|
|
map.put("b", 2);
|
|
Type typeOfMap = new TypeToken<Map<String, Integer>>() {}.getType();
|
|
String json = gson.toJson(map, typeOfMap);
|
|
assertTrue(json.contains("\"a\":1"));
|
|
assertTrue(json.contains("\"b\":2"));
|
|
}
|
|
|
|
public void testMapDeserialization() {
|
|
String json = "{\"a\":1,\"b\":2}";
|
|
Type typeOfMap = new TypeToken<Map<String,Integer>>(){}.getType();
|
|
Map<String, Integer> target = gson.fromJson(json, typeOfMap);
|
|
assertEquals(1, target.get("a").intValue());
|
|
assertEquals(2, target.get("b").intValue());
|
|
}
|
|
|
|
@SuppressWarnings({"unchecked", "rawtypes"})
|
|
public void testRawMapSerialization() {
|
|
Map map = new LinkedHashMap();
|
|
map.put("a", 1);
|
|
map.put("b", "string");
|
|
String json = gson.toJson(map);
|
|
assertTrue(json.contains("\"a\":1"));
|
|
assertTrue(json.contains("\"b\":\"string\""));
|
|
}
|
|
|
|
public void testMapSerializationEmpty() {
|
|
Map<String, Integer> map = new LinkedHashMap<String, Integer>();
|
|
Type typeOfMap = new TypeToken<Map<String, Integer>>() {}.getType();
|
|
String json = gson.toJson(map, typeOfMap);
|
|
assertEquals("{}", json);
|
|
}
|
|
|
|
public void testMapDeserializationEmpty() {
|
|
Type typeOfMap = new TypeToken<Map<String, Integer>>() {}.getType();
|
|
Map<String, Integer> map = gson.fromJson("{}", typeOfMap);
|
|
assertTrue(map.isEmpty());
|
|
}
|
|
|
|
public void testMapSerializationWithNullValue() {
|
|
Map<String, Integer> map = new LinkedHashMap<String, Integer>();
|
|
map.put("abc", null);
|
|
Type typeOfMap = new TypeToken<Map<String, Integer>>() {}.getType();
|
|
String json = gson.toJson(map, typeOfMap);
|
|
|
|
// Maps are represented as JSON objects, so ignoring null field
|
|
assertEquals("{}", json);
|
|
}
|
|
|
|
public void testMapDeserializationWithNullValue() {
|
|
Type typeOfMap = new TypeToken<Map<String, Integer>>() {}.getType();
|
|
Map<String, Integer> map = gson.fromJson("{\"abc\":null}", typeOfMap);
|
|
assertEquals(1, map.size());
|
|
assertNull(map.get("abc"));
|
|
}
|
|
|
|
public void testMapSerializationWithNullValueButSerializeNulls() {
|
|
gson = new GsonBuilder().serializeNulls().create();
|
|
Map<String, Integer> map = new LinkedHashMap<String, Integer>();
|
|
map.put("abc", null);
|
|
Type typeOfMap = new TypeToken<Map<String, Integer>>() {}.getType();
|
|
String json = gson.toJson(map, typeOfMap);
|
|
|
|
assertEquals("{\"abc\":null}", json);
|
|
}
|
|
|
|
public void testMapSerializationWithNullKey() {
|
|
Map<String, Integer> map = new LinkedHashMap<String, Integer>();
|
|
map.put(null, 123);
|
|
Type typeOfMap = new TypeToken<Map<String, Integer>>() {}.getType();
|
|
String json = gson.toJson(map, typeOfMap);
|
|
|
|
assertEquals("{\"null\":123}", json);
|
|
}
|
|
|
|
public void testMapDeserializationWithNullKey() {
|
|
Type typeOfMap = new TypeToken<Map<String, Integer>>() {}.getType();
|
|
Map<String, Integer> map = gson.fromJson("{\"null\":123}", typeOfMap);
|
|
assertEquals(1, map.size());
|
|
assertNull(map.get(null));
|
|
}
|
|
|
|
public void testMapSerializationWithIntegerKeys() {
|
|
Map<Integer, String> map = new LinkedHashMap<Integer, String>();
|
|
map.put(123, "456");
|
|
Type typeOfMap = new TypeToken<Map<Integer, String>>() {}.getType();
|
|
String json = gson.toJson(map, typeOfMap);
|
|
|
|
assertEquals("{\"123\":\"456\"}", json);
|
|
}
|
|
|
|
public void testMapDeserializationWithIntegerKeys() {
|
|
Type typeOfMap = new TypeToken<Map<Integer, String>>() {}.getType();
|
|
Map<Integer, String> map = gson.fromJson("{\"123\":\"456\"}", typeOfMap);
|
|
assertEquals(1, map.size());
|
|
assertTrue(map.containsKey(123));
|
|
assertEquals("456", map.get(123));
|
|
}
|
|
|
|
public void testParameterizedMapSubclassSerialization() {
|
|
MyParameterizedMap<String, String> map = new MyParameterizedMap<String, String>();
|
|
map.put("a", "b");
|
|
Type type = new TypeToken<MyParameterizedMap<String, String>>() {}.getType();
|
|
String json = gson.toJson(map, type);
|
|
assertTrue(json.contains("\"a\":\"b\""));
|
|
}
|
|
|
|
public void testParameterizedMapSubclassDeserialization() {
|
|
Type type = new TypeToken<MyParameterizedMap<String, Integer>>() {}.getType();
|
|
String json = "{\"a\":1,\"b\":2}";
|
|
MyParameterizedMap<String, Integer> map = gson.fromJson(json, type);
|
|
assertEquals(1, map.get("a").intValue());
|
|
assertEquals(2, map.get("b").intValue());
|
|
}
|
|
|
|
private static class MyParameterizedMap<K, V> extends LinkedHashMap<K, V> {
|
|
private static final long serialVersionUID = 1L;
|
|
|
|
@SuppressWarnings("unused")
|
|
int foo = 10;
|
|
}
|
|
|
|
public void testMapSubclassSerialization() {
|
|
MyMap map = new MyMap();
|
|
map.put("a", "b");
|
|
String json = gson.toJson(map, MyMap.class);
|
|
assertTrue(json.contains("\"a\":\"b\""));
|
|
}
|
|
|
|
public void testMapStandardSubclassDeserialization() {
|
|
String json = "{a:'1',b:'2'}";
|
|
Type type = new TypeToken<LinkedHashMap<String, String>>() {}.getType();
|
|
LinkedHashMap<String, Integer> map = gson.fromJson(json, type);
|
|
assertEquals("1", map.get("a"));
|
|
assertEquals("2", map.get("b"));
|
|
}
|
|
|
|
public void testMapSubclassDeserialization() {
|
|
Gson gson = new GsonBuilder().registerTypeAdapter(MyMap.class, new InstanceCreator<MyMap>() {
|
|
public MyMap createInstance(Type type) {
|
|
return new MyMap();
|
|
}
|
|
}).create();
|
|
String json = "{\"a\":1,\"b\":2}";
|
|
MyMap map = gson.fromJson(json, MyMap.class);
|
|
assertEquals("1", map.get("a"));
|
|
assertEquals("2", map.get("b"));
|
|
}
|
|
|
|
public void testCustomSerializerForSpecificMapType() {
|
|
Type type = $Gson$Types.newParameterizedTypeWithOwner(
|
|
null, Map.class, String.class, Long.class);
|
|
Gson gson = new GsonBuilder()
|
|
.registerTypeAdapter(type, new JsonSerializer<Map<String, Long>>() {
|
|
public JsonElement serialize(Map<String, Long> src, Type typeOfSrc,
|
|
JsonSerializationContext context) {
|
|
JsonArray array = new JsonArray();
|
|
for (long value : src.values()) {
|
|
array.add(new JsonPrimitive(value));
|
|
}
|
|
return array;
|
|
}
|
|
}).create();
|
|
|
|
Map<String, Long> src = new LinkedHashMap<String, Long>();
|
|
src.put("one", 1L);
|
|
src.put("two", 2L);
|
|
src.put("three", 3L);
|
|
|
|
assertEquals("[1,2,3]", gson.toJson(src, type));
|
|
}
|
|
|
|
/**
|
|
* Created in response to http://code.google.com/p/google-gson/issues/detail?id=99
|
|
*/
|
|
private static class ClassWithAMap {
|
|
Map<String, String> map = new TreeMap<String, String>();
|
|
}
|
|
|
|
/**
|
|
* Created in response to http://code.google.com/p/google-gson/issues/detail?id=99
|
|
*/
|
|
public void testMapSerializationWithNullValues() {
|
|
ClassWithAMap target = new ClassWithAMap();
|
|
target.map.put("name1", null);
|
|
target.map.put("name2", "value2");
|
|
String json = gson.toJson(target);
|
|
assertFalse(json.contains("name1"));
|
|
assertTrue(json.contains("name2"));
|
|
}
|
|
|
|
/**
|
|
* Created in response to http://code.google.com/p/google-gson/issues/detail?id=99
|
|
*/
|
|
public void testMapSerializationWithNullValuesSerialized() {
|
|
Gson gson = new GsonBuilder().serializeNulls().create();
|
|
ClassWithAMap target = new ClassWithAMap();
|
|
target.map.put("name1", null);
|
|
target.map.put("name2", "value2");
|
|
String json = gson.toJson(target);
|
|
assertTrue(json.contains("name1"));
|
|
assertTrue(json.contains("name2"));
|
|
}
|
|
|
|
public void testMapSerializationWithWildcardValues() {
|
|
Map<String, ? extends Collection<? extends Integer>> map =
|
|
new LinkedHashMap<String, Collection<Integer>>();
|
|
map.put("test", null);
|
|
Type typeOfMap =
|
|
new TypeToken<Map<String, ? extends Collection<? extends Integer>>>() {}.getType();
|
|
String json = gson.toJson(map, typeOfMap);
|
|
|
|
assertEquals("{}", json);
|
|
}
|
|
|
|
public void testMapDeserializationWithWildcardValues() {
|
|
Type typeOfMap = new TypeToken<Map<String, ? extends Long>>() {}.getType();
|
|
Map<String, ? extends Long> map = gson.fromJson("{\"test\":123}", typeOfMap);
|
|
assertEquals(1, map.size());
|
|
assertEquals(new Long(123L), map.get("test"));
|
|
}
|
|
|
|
|
|
private static class MyMap extends LinkedHashMap<String, String> {
|
|
private static final long serialVersionUID = 1L;
|
|
|
|
@SuppressWarnings("unused")
|
|
int foo = 10;
|
|
}
|
|
|
|
/**
|
|
* From bug report http://code.google.com/p/google-gson/issues/detail?id=95
|
|
*/
|
|
public void testMapOfMapSerialization() {
|
|
Map<String, Map<String, String>> map = new HashMap<String, Map<String, String>>();
|
|
Map<String, String> nestedMap = new HashMap<String, String>();
|
|
nestedMap.put("1", "1");
|
|
nestedMap.put("2", "2");
|
|
map.put("nestedMap", nestedMap);
|
|
String json = gson.toJson(map);
|
|
assertTrue(json.contains("nestedMap"));
|
|
assertTrue(json.contains("\"1\":\"1\""));
|
|
assertTrue(json.contains("\"2\":\"2\""));
|
|
}
|
|
|
|
/**
|
|
* From bug report http://code.google.com/p/google-gson/issues/detail?id=95
|
|
*/
|
|
public void testMapOfMapDeserialization() {
|
|
String json = "{nestedMap:{'2':'2','1':'1'}}";
|
|
Type type = new TypeToken<Map<String, Map<String, String>>>(){}.getType();
|
|
Map<String, Map<String, String>> map = gson.fromJson(json, type);
|
|
Map<String, String> nested = map.get("nestedMap");
|
|
assertEquals("1", nested.get("1"));
|
|
assertEquals("2", nested.get("2"));
|
|
}
|
|
|
|
/**
|
|
* From bug report http://code.google.com/p/google-gson/issues/detail?id=178
|
|
*/
|
|
public void testMapWithQuotes() {
|
|
Map<String, String> map = new HashMap<String, String>();
|
|
map.put("a\"b", "c\"d");
|
|
String json = gson.toJson(map);
|
|
assertEquals("{\"a\\\"b\":\"c\\\"d\"}", json);
|
|
}
|
|
|
|
/**
|
|
* From issue 227.
|
|
*/
|
|
public void testWriteMapsWithEmptyStringKey() {
|
|
Map<String, Boolean> map = new HashMap<String, Boolean>();
|
|
map.put("", true);
|
|
assertEquals("{\"\":true}", gson.toJson(map));
|
|
|
|
}
|
|
|
|
public void testReadMapsWithEmptyStringKey() {
|
|
Map<String, Boolean> map = gson.fromJson("{\"\":true}", new TypeToken<Map<String, Boolean>>() {}.getType());
|
|
assertEquals(Boolean.TRUE, map.get(""));
|
|
}
|
|
|
|
/**
|
|
* From bug report http://code.google.com/p/google-gson/issues/detail?id=204
|
|
*/
|
|
public void testSerializeMaps() {
|
|
Map<String, Object> map = new LinkedHashMap<String, Object>();
|
|
map.put("a", 12);
|
|
map.put("b", null);
|
|
|
|
LinkedHashMap<String, Object> innerMap = new LinkedHashMap<String, Object>();
|
|
innerMap.put("test", 1);
|
|
innerMap.put("TestStringArray", new String[] { "one", "two" });
|
|
map.put("c", innerMap);
|
|
|
|
assertEquals("{\"a\":12,\"b\":null,\"c\":{\"test\":1,\"TestStringArray\":[\"one\",\"two\"]}}",
|
|
new GsonBuilder().serializeNulls().create().toJson(map));
|
|
assertEquals("{\n \"a\": 12,\n \"b\": null,\n \"c\": "
|
|
+ "{\n \"test\": 1,\n \"TestStringArray\": "
|
|
+ "[\n \"one\",\n \"two\"\n ]\n }\n}",
|
|
new GsonBuilder().setPrettyPrinting().serializeNulls().create().toJson(map));
|
|
assertEquals("{\"a\":12,\"c\":{\"test\":1,\"TestStringArray\":[\"one\",\"two\"]}}",
|
|
new GsonBuilder().create().toJson(map));
|
|
assertEquals("{\n \"a\": 12,\n \"c\": "
|
|
+ "{\n \"test\": 1,\n \"TestStringArray\": "
|
|
+ "[\n \"one\",\n \"two\"\n ]\n }\n}",
|
|
new GsonBuilder().setPrettyPrinting().create().toJson(map));
|
|
|
|
innerMap.put("d", "e");
|
|
assertEquals("{\"a\":12,\"c\":{\"test\":1,\"TestStringArray\":[\"one\",\"two\"],\"d\":\"e\"}}",
|
|
new Gson().toJson(map));
|
|
}
|
|
|
|
public final void testInterfaceTypeMap() {
|
|
MapClass element = new MapClass();
|
|
TestTypes.Sub subType = new TestTypes.Sub();
|
|
element.addBase("Test", subType);
|
|
element.addSub("Test", subType);
|
|
|
|
String subTypeJson = new Gson().toJson(subType);
|
|
String expected = "{\"bases\":{\"Test\":" + subTypeJson + "},"
|
|
+ "\"subs\":{\"Test\":" + subTypeJson + "}}";
|
|
|
|
Gson gsonWithComplexKeys = new GsonBuilder()
|
|
.enableComplexMapKeySerialization()
|
|
.create();
|
|
String json = gsonWithComplexKeys.toJson(element);
|
|
assertEquals(expected, json);
|
|
|
|
Gson gson = new Gson();
|
|
json = gson.toJson(element);
|
|
assertEquals(expected, json);
|
|
}
|
|
|
|
public final void testInterfaceTypeMapWithSerializer() {
|
|
MapClass element = new MapClass();
|
|
TestTypes.Sub subType = new TestTypes.Sub();
|
|
element.addBase("Test", subType);
|
|
element.addSub("Test", subType);
|
|
|
|
Gson tempGson = new Gson();
|
|
String subTypeJson = tempGson.toJson(subType);
|
|
final JsonElement baseTypeJsonElement = tempGson.toJsonTree(subType, TestTypes.Base.class);
|
|
String baseTypeJson = tempGson.toJson(baseTypeJsonElement);
|
|
String expected = "{\"bases\":{\"Test\":" + baseTypeJson + "},"
|
|
+ "\"subs\":{\"Test\":" + subTypeJson + "}}";
|
|
|
|
JsonSerializer<TestTypes.Base> baseTypeAdapter = new JsonSerializer<TestTypes.Base>() {
|
|
public JsonElement serialize(TestTypes.Base src, Type typeOfSrc,
|
|
JsonSerializationContext context) {
|
|
return baseTypeJsonElement;
|
|
}
|
|
};
|
|
|
|
Gson gson = new GsonBuilder()
|
|
.enableComplexMapKeySerialization()
|
|
.registerTypeAdapter(TestTypes.Base.class, baseTypeAdapter)
|
|
.create();
|
|
String json = gson.toJson(element);
|
|
assertEquals(expected, json);
|
|
|
|
gson = new GsonBuilder()
|
|
.registerTypeAdapter(TestTypes.Base.class, baseTypeAdapter)
|
|
.create();
|
|
json = gson.toJson(element);
|
|
assertEquals(expected, json);
|
|
}
|
|
|
|
public void testGeneralMapField() throws Exception {
|
|
MapWithGeneralMapParameters map = new MapWithGeneralMapParameters();
|
|
map.map.put("string", "testString");
|
|
map.map.put("stringArray", new String[]{"one", "two"});
|
|
map.map.put("objectArray", new Object[]{1, 2L, "three"});
|
|
|
|
String expected = "{\"map\":{\"string\":\"testString\",\"stringArray\":"
|
|
+ "[\"one\",\"two\"],\"objectArray\":[1,2,\"three\"]}}";
|
|
assertEquals(expected, gson.toJson(map));
|
|
|
|
gson = new GsonBuilder()
|
|
.enableComplexMapKeySerialization()
|
|
.create();
|
|
assertEquals(expected, gson.toJson(map));
|
|
}
|
|
|
|
public void testComplexKeysSerialization() {
|
|
Map<Point, String> map = new LinkedHashMap<Point, String>();
|
|
map.put(new Point(2, 3), "a");
|
|
map.put(new Point(5, 7), "b");
|
|
String json = "{\"2,3\":\"a\",\"5,7\":\"b\"}";
|
|
assertEquals(json, gson.toJson(map, new TypeToken<Map<Point, String>>() {}.getType()));
|
|
assertEquals(json, gson.toJson(map, Map.class));
|
|
}
|
|
|
|
public void testComplexKeysDeserialization() {
|
|
String json = "{'2,3':'a','5,7':'b'}";
|
|
try {
|
|
gson.fromJson(json, new TypeToken<Map<Point, String>>() {}.getType());
|
|
fail();
|
|
} catch (JsonParseException expected) {
|
|
}
|
|
}
|
|
|
|
public void testStringKeyDeserialization() {
|
|
String json = "{'2,3':'a','5,7':'b'}";
|
|
Map<String, String> map = new LinkedHashMap<String, String>();
|
|
map.put("2,3", "a");
|
|
map.put("5,7", "b");
|
|
assertEquals(map, gson.fromJson(json, new TypeToken<Map<String, String>>() {}.getType()));
|
|
}
|
|
|
|
public void testNumberKeyDeserialization() {
|
|
String json = "{'2.3':'a','5.7':'b'}";
|
|
Map<Double, String> map = new LinkedHashMap<Double, String>();
|
|
map.put(2.3, "a");
|
|
map.put(5.7, "b");
|
|
assertEquals(map, gson.fromJson(json, new TypeToken<Map<Double, String>>() {}.getType()));
|
|
}
|
|
|
|
public void testBooleanKeyDeserialization() {
|
|
String json = "{'true':'a','false':'b'}";
|
|
Map<Boolean, String> map = new LinkedHashMap<Boolean, String>();
|
|
map.put(true, "a");
|
|
map.put(false, "b");
|
|
assertEquals(map, gson.fromJson(json, new TypeToken<Map<Boolean, String>>() {}.getType()));
|
|
}
|
|
|
|
public void testMapDeserializationWithDuplicateKeys() {
|
|
try {
|
|
gson.fromJson("{'a':1,'a':2}", new TypeToken<Map<String, Integer>>() {}.getType());
|
|
fail();
|
|
} catch (JsonSyntaxException expected) {
|
|
}
|
|
}
|
|
|
|
public void testMapNamePromotionWithJsonElementReader() {
|
|
String json = "{'2.3':'a'}";
|
|
Map<Double, String> map = new LinkedHashMap<Double, String>();
|
|
map.put(2.3, "a");
|
|
JsonElement tree = new JsonParser().parse(json);
|
|
assertEquals(map, gson.fromJson(tree, new TypeToken<Map<Double, String>>() {}.getType()));
|
|
}
|
|
|
|
static class Point {
|
|
private final int x;
|
|
private final int y;
|
|
|
|
Point(int x, int y) {
|
|
this.x = x;
|
|
this.y = y;
|
|
}
|
|
|
|
@Override public boolean equals(Object o) {
|
|
return o instanceof Point && x == ((Point) o).x && y == ((Point) o).y;
|
|
}
|
|
|
|
@Override public int hashCode() {
|
|
return x * 37 + y;
|
|
}
|
|
|
|
@Override public String toString() {
|
|
return x + "," + y;
|
|
}
|
|
}
|
|
|
|
static final class MapClass {
|
|
private final Map<String, TestTypes.Base> bases = new HashMap<String, TestTypes.Base>();
|
|
private final Map<String, TestTypes.Sub> subs = new HashMap<String, TestTypes.Sub>();
|
|
|
|
public final void addBase(String name, TestTypes.Base value) {
|
|
bases.put(name, value);
|
|
}
|
|
|
|
public final void addSub(String name, TestTypes.Sub value) {
|
|
subs.put(name, value);
|
|
}
|
|
}
|
|
|
|
static final class MapWithGeneralMapParameters {
|
|
@SuppressWarnings({"rawtypes", "unchecked"})
|
|
final Map<String, Object> map = new LinkedHashMap();
|
|
}
|
|
}
|