content: package com.alibaba.fastjson2.codec;
  
  import com.alibaba.fastjson2.JSON;
  import org.junit.jupiter.api.Test;
  
  import java.util.*;
  import java.util.concurrent.ConcurrentHashMap;
  import java.util.concurrent.ConcurrentMap;
  import java.util.concurrent.ConcurrentNavigableMap;
  import java.util.concurrent.ConcurrentSkipListMap;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  public class ParseMapTest {
      @Test
      public void test_ConcurrentMap() {
          String str = "{}";
          ConcurrentMap map = JSON.parseObject(str, ConcurrentMap.class);
          assertEquals(0, map.size());
      }
  
      @Test
      public void test_ConcurrentHashMap() {
          String str = "{}";
          ConcurrentHashMap map = JSON.parseObject(str, ConcurrentHashMap.class);
          assertEquals(0, map.size());
      }
  
      @Test
      public void test_ConcurrentNavigableMap() {
          String str = "{}";
          ConcurrentNavigableMap map = JSON.parseObject(str, ConcurrentNavigableMap.class);
          assertEquals(0, map.size());
      }
  
      @Test
      public void test_ConcurrentSkipListMap() {
          String str = "{}";
          ConcurrentSkipListMap map = JSON.parseObject(str, ConcurrentSkipListMap.class);
          assertEquals(0, map.size());
      }
  
      @Test
      public void test_NavigableMap() {
          String str = "{}";
          NavigableMap map = JSON.parseObject(str, NavigableMap.class);
          assertEquals(0, map.size());
      }
  
      @Test
      public void test_SortedMap() {
          String str = "{}";
          SortedMap map = JSON.parseObject(str, SortedMap.class);
          assertEquals(0, map.size());
      }
  
      @Test
      public void test_TreeMap() {
          String str = "{}";
          TreeMap map = JSON.parseObject(str, TreeMap.class);
          assertEquals(0, map.size());
      }
  
      @Test
      public void test_HashMap() {
          String str = "{}";
          HashMap map = JSON.parseObject(str, HashMap.class);
          assertEquals(0, map.size());
      }
  
      @Test
      public void test_LinkedHashMap() {
          String str = "{}";
          LinkedHashMap map = JSON.parseObject(str, LinkedHashMap.class);
          assertEquals(0, map.size());
      }
  
      @Test
      public void test_IdentityHashMap() {
          String str = "{}";
          IdentityHashMap map = JSON.parseObject(str, IdentityHashMap.class);
          assertEquals(0, map.size());
      }
  
      @Test
      public void test_AbstractMap() {
          String str = "{}";
          AbstractMap map = JSON.parseObject(str, AbstractMap.class);
          assertEquals(0, map.size());
      }
  
      @Test
      public void test_MyMap() {
          String str = "{}";
          MyMap map = JSON.parseObject(str, MyMap.class);
          assertEquals(0, map.size());
      }
  
      public static class MyMap
              extends HashMap {
      }
  }
  