content: package com.alibaba.fastjson2;
  
  import com.alibaba.fastjson2.annotation.JSONCreator;
  import com.alibaba.fastjson2.annotation.JSONField;
  import com.alibaba.fastjson2.util.ParameterizedTypeImpl;
  import org.junit.jupiter.api.Test;
  
  import java.lang.reflect.Type;
  import java.math.BigInteger;
  import java.util.ArrayList;
  import java.util.LinkedList;
  import java.util.List;
  import java.util.Objects;
  import java.util.concurrent.ConcurrentHashMap;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  public class TypeReferenceTest3 {
      @Test
      public void test() {
          ParameterizedTypeImpl type = new ParameterizedTypeImpl(Response.class, BigInteger.class);
          Response response = JSON.parseObject("{\"value\":123}", type);
          assertEquals(BigInteger.valueOf(123), response.value);
      }
  
      public static class Response<T> {
          public T value;
      }
  
      @Test
      public void test1() {
          ParameterizedTypeImpl type = new ParameterizedTypeImpl(Response1.class, BigInteger.class);
          Response1 response = JSON.parseObject("{\"value\":123}", type);
          assertEquals(BigInteger.valueOf(123), response.value);
      }
  
      public static class Response1<T> {
          private final T value;
  
          @JSONCreator
          private Response1(T value) {
              this.value = value;
          }
      }
  
      @Test
      public void test2() {
          BeanList beanList = JSON.parseObject("[{\"id\":123,\"name\":\"XXX\"}]", BeanList.class);
          assertEquals(1, beanList.size());
          Bean bean = beanList.get(0);
          assertEquals(123, bean.id);
          assertEquals("XXX", bean.name);
      }
  
      @Test
      public void test3() {
          Type type = TypeReference.collectionType(ArrayList.class, Bean.class);
          List<Bean> list = JSON.parseObject("[{\"id\":123,\"name\":\"XXX\"}]", type);
          assertEquals(1, list.size());
          Bean bean = list.get(0);
          assertEquals(123, bean.id);
          assertEquals("XXX", bean.name);
      }
  
      @Test
      public void test4() {
          Type type = TypeReference.mapType(ConcurrentHashMap.class, Key.class, Bean.class);
          ConcurrentHashMap<Key, Bean> map = JSON.parseObject("{\"value\":{\"id\":123,\"name\":\"XXX\"}}", type);
          assertEquals(1, map.size());
          Bean bean = map.get(new Key("value"));
          assertEquals(123, bean.id);
          assertEquals("XXX", bean.name);
      }
  
      @Test
      public void test5() {
          Type type = TypeReference.arrayType(Bean.class);
          Bean[] array = JSON.parseObject("[{\"id\":123,\"name\":\"XXX\"}]", type);
          assertEquals(1, array.length);
          Bean bean = array[0];
          assertEquals(123, bean.id);
          assertEquals("XXX", bean.name);
      }
  
      @Test
      public void test6() {
          Type type = TypeReference.parametricType(LinkedList.class, Bean.class);
          LinkedList<Bean> list = JSON.parseObject("[{\"id\":123,\"name\":\"XXX\"}]", type);
          assertEquals(1, list.size());
          Bean bean = list.get(0);
          assertEquals(123, bean.id);
          assertEquals("XXX", bean.name);
      }
  
      public static class Key {
          private final String value;
  
          @JSONCreator
          public Key(@JSONField(value = true) String value) {
              this.value = value;
          }
  
          @Override
          public boolean equals(Object o) {
              if (this == o) {
                  return true;
              }
              if (o == null || getClass() != o.getClass()) {
                  return false;
              }
              Key key = (Key) o;
              return Objects.equals(value, key.value);
          }
  
          @Override
          public int hashCode() {
              return Objects.hash(value);
          }
      }
  
      public static class Bean {
          public int id;
          public String name;
      }
  
      public static class BeanList
              extends ArrayList<Bean> {
      }
  }
  