content: package com.alibaba.json.bvt.issue_1500;
  
  import com.alibaba.fastjson.JSON;
  import com.alibaba.fastjson.serializer.SerializerFeature;
  import junit.framework.TestCase;
  
  import java.util.List;
  
  public class Issue1570_private extends TestCase {
      public void test_for_issue() throws Exception {
          Model model = new Model();
          assertEquals("{}", JSON.toJSONString(model, SerializerFeature.WriteNullBooleanAsFalse));
          assertEquals("{\"value\":\"\"}", JSON.toJSONString(model, SerializerFeature.WriteNullStringAsEmpty));
      }
  
      public void test_for_issue_int() throws Exception {
          ModelInt model = new ModelInt();
          assertEquals("{}", JSON.toJSONString(model, SerializerFeature.WriteNullBooleanAsFalse));
          assertEquals("{\"value\":0}", JSON.toJSONString(model, SerializerFeature.WriteNullNumberAsZero));
      }
  
      public void test_for_issue_long() throws Exception {
          ModelLong model = new ModelLong();
          assertEquals("{}", JSON.toJSONString(model, SerializerFeature.WriteNullBooleanAsFalse));
          assertEquals("{\"value\":0}", JSON.toJSONString(model, SerializerFeature.WriteNullNumberAsZero));
      }
  
      public void test_for_issue_bool() throws Exception {
          ModelBool model = new ModelBool();
          assertEquals("{}", JSON.toJSONString(model, SerializerFeature.WriteNullNumberAsZero));
          assertEquals("{\"value\":false}", JSON.toJSONString(model, SerializerFeature.WriteNullBooleanAsFalse));
      }
  
      public void test_for_issue_list() throws Exception {
          ModelList model = new ModelList();
          assertEquals("{}", JSON.toJSONString(model, SerializerFeature.WriteNullNumberAsZero));
          assertEquals("{\"value\":[]}", JSON.toJSONString(model, SerializerFeature.WriteNullListAsEmpty));
      }
  
      private static class Model {
          public String value;
      }
  
      private static class ModelInt {
          public Integer value;
      }
  
      private static class ModelLong {
          public Long value;
      }
  
      private static class ModelBool {
          public Boolean value;
      }
  
      private static class ModelList {
          public List value;
      }
  }
  