content: package com.alibaba.fastjson2.issues_1000;
  
  import com.alibaba.fastjson2.JSONArray;
  import com.alibaba.fastjson2.JSONObject;
  import org.junit.jupiter.api.Test;
  import org.yaml.snakeyaml.Yaml;
  
  import java.io.StringReader;
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.Map;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  public class Issue1203 {
      @Test
      public void test() {
          JSONArray array = new JSONArray();
          array.add("a");
          JSONObject object = new JSONObject();
          object.put("array", array);
          Yaml yaml = new Yaml();
          JSONObject json = yaml.loadAs(
                  new StringReader(object.toString()),
                  JSONObject.class
          );
          JSONArray res = json.getJSONArray("array");
          res.add("b");
          assertEquals(
                  "[\"a\",\"b\"]",
                  json.getJSONArray("array").toString()
          );
      }
  
      @Test
      public void test1() {
          JSONArray array = new JSONArray();
          ArrayList list = new ArrayList();
          list.add("a");
          array.add(list);
          JSONArray res = array.getJSONArray(0);
          res.add("b");
          assertEquals(
                  "[\"a\",\"b\"]",
                  array.getJSONArray(0).toString()
          );
      }
  
      @Test
      public void test2() {
          JSONArray array = new JSONArray();
          Map map = new HashMap();
          map.put("a", 1);
          array.add(map);
          JSONObject res = array.getJSONObject(0);
          res.put("b", 2);
          assertEquals(
                  "{\"a\":1,\"b\":2}",
                  array.getJSONObject(0).toString()
          );
      }
  
      @Test
      public void test3() {
          JSONObject root = new JSONObject();
          Map map = new HashMap();
          map.put("a", 1);
          root.put("items", map);
          JSONObject res = root.getJSONObject("items");
          res.put("b", 2);
          assertEquals(
                  "{\"a\":1,\"b\":2}",
                  root.getJSONObject("items").toString()
          );
      }
  }
  