junit(四)



package com.ygl;
public class Calculator {
    private  int add(int a,int b){
     return a+b;
    }
    }
//**************************************
package com.ygl;
import java.lang.reflect.Method;
import junit.framework.Assert;
 import junit.framework.TestCase;public class CalculatorTest extends TestCase {
   public void testAdd(){
    try{
     Calculator cal=new Calculator();
     Class<Calculator>  clazz=Calculator.class;
        Method method=clazz.getDeclaredMethod("add", new Class[]{int.class,int.class});//Integer.Type返回的是int的class对象
        method.setAccessible(true);
        Object result=  method.invoke(cal, new Object[]{2,3});
        Assert.assertEquals(5, result);
    
    }catch(Exception e){
     
    }
   
    
    
    
    
   }
 }