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Java example source code file (SerializedNameTest.java)

This example Java source code file (SerializedNameTest.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

gson, myclass, serializedname, serializednametest, string, testcase

The SerializedNameTest.java Java example source code

/*
 * Copyright (C) 2015 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.annotations.SerializedName;

import junit.framework.TestCase;

public final class SerializedNameTest extends TestCase {
  private final Gson gson = new Gson();

  public void testFirstNameIsChosenForSerialization() {
    MyClass target = new MyClass("v1", "v2");
    // Ensure name1 occurs exactly once, and name2 and name3 don't appear
    assertEquals("{\"name\":\"v1\",\"name1\":\"v2\"}", gson.toJson(target));
  }

  public void testMultipleNamesDeserializedCorrectly() {
    assertEquals("v1", gson.fromJson("{'name':'v1'}", MyClass.class).a);

    // Both name1 and name2 gets deserialized to b
    assertEquals("v11", gson.fromJson("{'name1':'v11'}", MyClass.class).b);
    assertEquals("v2", gson.fromJson("{'name2':'v2'}", MyClass.class).b);
    assertEquals("v3", gson.fromJson("{'name3':'v3'}", MyClass.class).b);
  }

  public void testMultipleNamesInTheSameString() {
    // The last value takes precedence
    assertEquals("v3", gson.fromJson("{'name1':'v1','name2':'v2','name3':'v3'}", MyClass.class).b);
  }

  private static final class MyClass {
    @SerializedName("name") String a;
    @SerializedName(value="name1", alternate={"name2", "name3"}) String b;
    MyClass(String a, String b) {
      this.a = a;
      this.b = b;
    }
  }
}

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