content: package com.alibaba.json.bvt.serializer;
  
  import java.awt.Font;
  
  import junit.framework.Assert;
  import junit.framework.TestCase;
  
  import com.alibaba.fastjson.JSON;
  import com.alibaba.fastjson.serializer.FontSerializer;
  import com.alibaba.fastjson.serializer.JSONSerializer;
  import com.alibaba.fastjson.serializer.SerializeConfig;
  import com.alibaba.fastjson.serializer.SerializerFeature;
  
  
  public class FontSerializerTest extends TestCase {
      
      public void test_null() throws Exception {
          JSONSerializer serializer = new JSONSerializer();
          Assert.assertEquals(FontSerializer.class, serializer.getObjectWriter(Font.class).getClass());
          
          VO vo = new VO();
          
          Assert.assertEquals("{\"value\":null}", JSON.toJSONString(vo, SerializerFeature.WriteMapNullValue));
      }
  
      private static class VO {
  
          private Font value;
  
          public Font getValue() {
              return value;
          }
  
          public void setValue(Font value) {
              this.value = value;
          }
  
      }
  }
  