2008-10-22 00:37:41 +02:00
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/*
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* Copyright (C) 2008 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.gson.functional;
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import java.lang.reflect.Type;
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import java.util.LinkedHashMap;
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import java.util.Map;
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import junit.framework.TestCase;
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import com.google.gson.Gson;
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2008-11-14 00:40:10 +01:00
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import com.google.gson.GsonBuilder;
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import com.google.gson.InstanceCreator;
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2008-10-22 00:37:41 +02:00
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import com.google.gson.reflect.TypeToken;
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/**
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* Functional test for Json serialization and deserialization for Maps
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*
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* @author Inderjeet Singh
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* @author Joel Leitch
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*/
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public class MapTest extends TestCase {
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private Gson gson;
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@Override
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protected void setUp() throws Exception {
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super.setUp();
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gson = new Gson();
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}
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public void testMapSerialization() {
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Map<String, Integer> map = new LinkedHashMap<String, Integer>();
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map.put("a", 1);
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map.put("b", 2);
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Type typeOfMap = new TypeToken<Map<String, Integer>>() {}.getType();
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String json = gson.toJson(map, typeOfMap);
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assertTrue(json.contains("\"a\":1"));
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assertTrue(json.contains("\"b\":2"));
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}
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public void testMapDeserialization() {
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String json = "{\"a\":1,\"b\":2}";
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Type typeOfMap = new TypeToken<Map<String,Integer>>(){}.getType();
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Map<String, Integer> target = gson.fromJson(json, typeOfMap);
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assertEquals(1, target.get("a").intValue());
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assertEquals(2, target.get("b").intValue());
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}
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@SuppressWarnings("unchecked")
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public void testRawMapSerialization() {
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Map map = new LinkedHashMap();
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map.put("a", 1);
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map.put("b", "string");
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String json = gson.toJson(map);
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assertTrue(json.contains("\"a\":1"));
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assertTrue(json.contains("\"b\":\"string\""));
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}
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public void testMapSerializationEmpty() {
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Map<String, Integer> map = new LinkedHashMap<String, Integer>();
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Type typeOfMap = new TypeToken<Map<String, Integer>>() {}.getType();
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String json = gson.toJson(map, typeOfMap);
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assertEquals("{}", json);
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}
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2008-11-14 03:11:46 +01:00
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public void testParameterizedMapSubclassSerialization() {
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MyParameterizedMap<String, String> map = new MyParameterizedMap<String, String>();
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map.put("a", "b");
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Type type = new TypeToken<MyParameterizedMap<String, String>>() {}.getType();
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String json = gson.toJson(map, type);
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assertTrue(json.contains("\"a\":\"b\""));
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}
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@SuppressWarnings("unchecked")
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public void testParameterizedMapSubclassDeserialization() {
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Type type = new TypeToken<MyParameterizedMap<String, Integer>>() {}.getType();
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Gson gson = new GsonBuilder().registerTypeAdapter(type,
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new InstanceCreator<MyParameterizedMap>() {
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public MyParameterizedMap createInstance(Type type) {
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return new MyParameterizedMap();
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}
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}).create();
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String json = "{\"a\":1,\"b\":2}";
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MyParameterizedMap<String, Integer> map = gson.fromJson(json, type);
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2008-11-14 03:17:19 +01:00
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assertEquals(1, map.get("a").intValue());
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assertEquals(2, map.get("b").intValue());
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2008-11-14 03:11:46 +01:00
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}
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private static class MyParameterizedMap<K, V> extends LinkedHashMap<K, V> {
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2008-11-15 06:13:05 +01:00
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private static final long serialVersionUID = 1L;
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2008-11-14 03:11:46 +01:00
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int foo = 10;
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}
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2008-11-14 00:40:10 +01:00
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public void testMapSubclassSerialization() {
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MyMap map = new MyMap();
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map.put("a", "b");
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2008-11-14 03:11:46 +01:00
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String json = gson.toJson(map, MyMap.class);
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2008-11-14 00:40:10 +01:00
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assertTrue(json.contains("\"a\":\"b\""));
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}
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2008-11-14 21:52:57 +01:00
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public void disable_testMapSubclassDeserialization() {
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2008-11-14 00:40:10 +01:00
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Gson gson = new GsonBuilder().registerTypeAdapter(MyMap.class, new InstanceCreator<MyMap>(){
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public MyMap createInstance(Type type) {
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return new MyMap();
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}
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}).create();
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String json = "{\"a\":1,\"b\":2}";
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MyMap map = gson.fromJson(json, MyMap.class);
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assertEquals("1", map.get("a"));
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assertEquals("2", map.get("b"));
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}
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private static class MyMap extends LinkedHashMap<String, String> {
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2008-11-15 06:13:05 +01:00
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private static final long serialVersionUID = 1L;
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2008-11-14 00:40:10 +01:00
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int foo = 10;
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}
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2008-10-22 00:37:41 +02:00
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}
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