Java example source code file (FieldExclusionTest.java)

This example Java source code file (FieldExclusionTest.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

exception, fieldexclusiontest, gson, inner, nestedclass, outer, override, string, testcase, value

The FieldExclusionTest.java Java example source code

/*
 * 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 com.google.gson.Gson;
import com.google.gson.GsonBuilder;

import junit.framework.TestCase;

/**
 * Performs some functional testing to ensure GSON infrastructure properly serializes/deserializes
 * fields that either should or should not be included in the output based on the GSON
 * configuration.
 *
 * @author Joel Leitch
 */
public class FieldExclusionTest extends TestCase {
  private static final String VALUE = "blah_1234";

  private Outer outer;

  @Override
  protected void setUp() throws Exception {
    super.setUp();
    outer = new Outer();
  }

  public void testDefaultInnerClassExclusion() throws Exception {
    Gson gson = new Gson();
    Outer.Inner target = outer.new Inner(VALUE);
    String result = gson.toJson(target);
    assertEquals(target.toJson(), result);

    gson = new GsonBuilder().create();
    target = outer.new Inner(VALUE);
    result = gson.toJson(target);
    assertEquals(target.toJson(), result);
  }

  public void testInnerClassExclusion() throws Exception {
    Gson gson = new GsonBuilder().disableInnerClassSerialization().create();
    Outer.Inner target = outer.new Inner(VALUE);
    String result = gson.toJson(target);
    assertEquals("null", result);
  }

  public void testDefaultNestedStaticClassIncluded() throws Exception {
    Gson gson = new Gson();
    Outer.Inner target = outer.new Inner(VALUE);
    String result = gson.toJson(target);
    assertEquals(target.toJson(), result);

    gson = new GsonBuilder().create();
    target = outer.new Inner(VALUE);
    result = gson.toJson(target);
    assertEquals(target.toJson(), result);
  }

  private static class Outer {
    private class Inner extends NestedClass {
      public Inner(String value) {
        super(value);
      }
    }

  }

  private static class NestedClass {
    private final String value;
    public NestedClass(String value) {
      this.value = value;
    }

    public String toJson() {
      return "{\"value\":\"" + value + "\"}";
    }
  }
}