content: package com.alibaba.fastjson2.autoType;
  
  import com.alibaba.fastjson2.JSONB;
  import com.alibaba.fastjson2.JSONReader;
  import com.alibaba.fastjson2.JSONWriter;
  import com.alibaba.fastjson2.util.Differ;
  import org.junit.jupiter.api.Test;
  
  public class AutoTypeTest12 {
      @Test
      public void test_0() throws Exception {
          Bean bean = new Bean();
          bean.item = bean.new Item();
  
          byte[] bytes = JSONB.toBytes(bean, JSONWriter.Feature.WriteClassName, JSONWriter.Feature.FieldBased, JSONWriter.Feature.ReferenceDetection);
  
          Bean bean2 = (Bean) JSONB.parseObject(bytes, Object.class, JSONReader.Feature.SupportAutoType, JSONReader.Feature.FieldBased);
  
          Differ.diff(bean, bean2);
      }
  
      public static class Bean {
          public Item item;
  
          public class Item {
          }
      }
  
  //    @Test
  //    public void test4() {
  //        Object o = JSON.parseObject("{\"@type\":\"org.springframework.cache.support.NullValue\"}",
  //                Object.class, Feature.SupportAutoType
  //        );
  //
  //        assertNotNull(o.getClass());
  //    }
  }
  