content: package com.alibaba.fastjson2.issues;
  
  import com.alibaba.fastjson2.JSON;
  import com.alibaba.fastjson2.JSONReader;
  import org.junit.jupiter.api.Test;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import static org.junit.jupiter.api.Assertions.*;
  
  public class Issue573 {
      @Test
      public void test() {
          Bean bean = JSON.parseObject("{\"items\":[null,null]}", Bean.class);
          assertNotNull(bean);
          assertEquals(2, bean.items.size());
          assertNull(bean.items.get(0));
          assertNull(bean.items.get(1));
      }
  
      public static class Bean {
          public List<Item> items;
      }
  
      public static class Item {
      }
  
      @Test
      public void test1() {
          Bean1 bean = JSON.parseObject("{\"items\":[null,null]}", Bean1.class);
          assertNotNull(bean);
          assertEquals(2, bean.items.size());
          assertNull(bean.items.get(0));
          assertNull(bean.items.get(1));
      }
  
      private static class Bean1 {
          public List<Item> items;
      }
  
      @Test
      public void test2() {
          Bean2 bean = JSON.parseObject("{\"items\":[null,null]}", Bean2.class);
          assertNotNull(bean);
          assertEquals(2, bean.items.size());
          assertNull(bean.items.get(0));
          assertNull(bean.items.get(1));
      }
  
      public static class Bean2 {
          private List<Item> items;
  
          public List<Item> getItems() {
              return items;
          }
  
          public void setItems(List<Item> items) {
              this.items = items;
          }
      }
  
      @Test
      public void test3() {
          Bean3 bean = JSON.parseObject("{\"items\":[null,null]}", Bean3.class);
          assertNotNull(bean);
          assertEquals(2, bean.items.size());
          assertNull(bean.items.get(0));
          assertNull(bean.items.get(1));
      }
  
      public static class Bean3 {
          private List<Item> items = new ArrayList<>();
  
          public List<Item> getItems() {
              return items;
          }
      }
  
      @Test
      public void test4() {
          Bean4 bean = JSON.parseObject("{\"items\":[null,null]}", Bean4.class, JSONReader.Feature.FieldBased);
          assertNotNull(bean);
          assertEquals(2, bean.items.size());
          assertNull(bean.items.get(0));
          assertNull(bean.items.get(1));
      }
  
      public static class Bean4 {
          private List<Item> items = new ArrayList<>();
      }
  
      @Test
      public void test5() {
          Bean5 bean = JSON.parseObject("{\"items\":[null,null]}", Bean5.class);
          assertNotNull(bean);
          assertEquals(2, bean.items.size());
          assertNull(bean.items.get(0));
          assertNull(bean.items.get(1));
      }
  
      public static class Bean5 {
          public List<String> items;
      }
  
      @Test
      public void test6() {
          Bean6 bean = JSON.parseObject("{\"items\":[null,null]}", Bean6.class);
          assertNotNull(bean);
          assertEquals(2, bean.items.size());
          assertNull(bean.items.get(0));
          assertNull(bean.items.get(1));
      }
  
      public static class Bean6 {
          public List<Integer> items;
      }
  }
  