package top.qaqaq.java.P653;

import org.junit.jupiter.api.Test;
import top.qaqaq.java.P649.Person;

import java.lang.annotation.Annotation;
import java.lang.reflect.Constructor;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;

/**
 * @author RichieZhang
 * @create 2022-11-01 下午 9:21
 */
public class OtherTest {

    /*
    获取构造器结构
     */

    @Test
    public void test1(){

        Class clazz = Person.class;
        //getConstructors(): 获取当前运行时类中声明为public的构造器
        Constructor[] constructors = clazz.getConstructors();
        for (Constructor c : constructors) {
            System.out.println(c);
        }

        System.out.println();

        //getDeclaredConstructors(): 获取当前运行时类中声明的所有的构造器
        Constructor[] declaredConstructors = clazz.getDeclaredConstructors();
        for (Constructor c : declaredConstructors) {
            System.out.println(c);
        }
    }

    /*
    获取运行时类的父类

     */
    @Test
    public void test2(){
        Class clazz = Person.class;

        Class superclass = clazz.getSuperclass();
        System.out.println(superclass);
    }

    /*
    获取运行时类的带泛型的父类

     */
    @Test
    public void test3(){
        Class clazz = Person.class;

        Type genericSuperclass = clazz.getGenericSuperclass();
        System.out.println(genericSuperclass);
    }

    /*
    获取运行时类的带泛型的父类的泛型

    代码：逻辑性代码 vs 功能性代码
     */
    @Test
    public void test4(){
        Class clazz = Person.class;

        Type genericSuperclass = clazz.getGenericSuperclass();
        ParameterizedType paramType = (ParameterizedType) genericSuperclass;
        //获取泛型类型
        Type[] actualTypeArguments = paramType.getActualTypeArguments();

//        System.out.println(actualTypeArguments[0].getTypeName());
        System.out.println(((Class)actualTypeArguments[0]).getName());
    }

    /*
    获取运行时类实现的接口

     */
    @Test
    public void test5(){
        Class clazz = Person.class;

        Class[] interfaces = clazz.getInterfaces();
        for (Class c : interfaces){
            System.out.println(c);
        }

        System.out.println();

        //获取运行时类的父类实现的接口
        Class[] interfaces1 = clazz.getSuperclass().getInterfaces();
        for (Class c : interfaces1){
            System.out.println(c);
        }
    }

    /*
    获取运行时类所在的包

     */
    @Test
    public void test6(){
        Class clazz = Person.class;

        Package pack = clazz.getPackage();
        System.out.println(pack);
    }

    /*
    获取运行时类声明的注解

     */
    @Test
    public void test7(){
        Class clazz = Person.class;

        Annotation[] annotations = clazz.getAnnotations();
        for (Annotation annos : annotations) {
            System.out.println(annos);
        }
    }
}