78 lines
2.5 KiB
Java
78 lines
2.5 KiB
Java
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/*
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* Copyright (C) 2009 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 junit.framework.TestCase;
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import com.google.gson.Gson;
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import com.google.gson.GsonBuilder;
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import com.google.gson.InstanceCreator;
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import com.google.gson.common.TestTypes.Base;
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import com.google.gson.common.TestTypes.ClassWithBaseField;
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import com.google.gson.common.TestTypes.Sub;
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/**
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* Functional Test exercising custom serialization only. When test applies to both
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* serialization and deserialization then add it to CustomTypeAdapterTest.
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*
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* @author Inderjeet Singh
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*/
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public class InstanceCreatorTest extends TestCase {
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public void testInstanceCreatorReturnsBaseType() {
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Gson gson = new GsonBuilder()
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.registerTypeAdapter(Base.class, new InstanceCreator<Base>() {
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public Base createInstance(Type type) {
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return new Base();
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}
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})
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.create();
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String json = "{baseName:'BaseRevised',subName:'Sub'}";
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Base base = gson.fromJson(json, Base.class);
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assertEquals("BaseRevised", base.baseName);
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}
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public void testInstanceCreatorReturnsSubTypeForTopLevelObject() {
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Gson gson = new GsonBuilder()
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.registerTypeAdapter(Base.class, new InstanceCreator<Base>() {
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public Base createInstance(Type type) {
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return new Sub();
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}
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})
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.create();
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String json = "{baseName:'Base',subName:'SubRevised'}";
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Base base = gson.fromJson(json, Base.class);
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assertFalse("SubRevised".equals(((Sub)base).subName));
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}
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public void testInstanceCreatorReturnsSubTypeForField() {
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Gson gson = new GsonBuilder()
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.registerTypeAdapter(Base.class, new InstanceCreator<Base>() {
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public Base createInstance(Type type) {
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return new Sub();
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}
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})
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.create();
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String json = "{base:{baseName:'Base',subName:'SubRevised'}}";
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ClassWithBaseField target = gson.fromJson(json, ClassWithBaseField.class);
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assertTrue(target.base instanceof Sub);
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assertEquals("SubRevised", ((Sub)target.base).subName);
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}
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}
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