content: package com.alibaba.fastjson2.issues_2400;
  
  import com.alibaba.fastjson2.JSON;
  import com.alibaba.fastjson2.JSONWriter;
  import com.alibaba.fastjson2.TypeReference;
  import org.junit.jupiter.api.Test;
  
  import java.util.*;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  /**
   * @author hnyyghk
   * @since 2024-04-24
   */
  public class Issue2475 {
      @Test
      void testList() {
          long millis = 1324138987429L;
          Date date = new Date(millis);
  
          List<Date> data = new ArrayList<>();
          data.add(date);
          String str = JSON.toJSONString(data, JSONWriter.Feature.WriteClassName);
  
          List<Date> data1 = JSON.parseObject(str, new TypeReference<List<Date>>() {
          }.getType());
          assertEquals(date.getTime(), data1.iterator().next().getTime());
      }
  
      @Test
      void testSet() {
          long millis = 1324138987429L;
          Date date = new Date(millis);
  
          Set<Date> data = new HashSet<>();
          data.add(date);
          String str = JSON.toJSONString(data, JSONWriter.Feature.WriteClassName);
  
          Set<Date> data1 = JSON.parseObject(str, new TypeReference<Set<Date>>() {
          }.getType());
          assertEquals(date.getTime(), data1.iterator().next().getTime());
      }
  
      @Test
      void testMapKey() {
          long millis = 1324138987429L;
          Date date = new Date(millis);
  
          Map<Date, String> data = new HashMap<>();
          data.put(date, "date");
          String str = JSON.toJSONString(data, JSONWriter.Feature.WriteClassName, JSONWriter.Feature.NotWriteRootClassName);
  
          Map<Date, String> data1 = JSON.parseObject(str, new TypeReference<Map<Date, String>>() {
          }.getType());
          assertEquals(date.getTime(), data1.keySet().iterator().next().getTime());
      }
  
      @Test
      void testMapValue() {
          long millis = 1324138987429L;
          Date date = new Date(millis);
  
          Map<String, Date> data = new HashMap<>();
          data.put("date", date);
          String str = JSON.toJSONString(data, JSONWriter.Feature.WriteClassName, JSONWriter.Feature.NotWriteRootClassName);
  
          Map<String, Date> data1 = JSON.parseObject(str, new TypeReference<Map<String, Date>>() {
          }.getType());
          assertEquals(date.getTime(), data1.values().iterator().next().getTime());
      }
  
      @Test
      public void testBean() {
          long millis = 1324138987429L;
          Date date = new Date(millis);
  
          Map<String, Date> data = new HashMap<>();
          data.put("date", date);
          String str = JSON.toJSONString(data, JSONWriter.Feature.WriteClassName);
  
          Bean data1 = JSON.parseObject(str, Bean.class);
          assertEquals(date.getTime(), data1.date.getTime());
      }
  
      public static class Bean {
          public Date date;
      }
  }
  