Junit3.8 私有方法测试

package junit;

public class Calculator2
{
private int add(int a, int b)
{
return a + b;
}
}

package junit;

import java.lang.reflect.Method;

import junit.framework.Assert;
import junit.framework.TestCase;
/**
* 测试私有方法，反射
*/
public class Calculator2Test extends TestCase
{
public void testAdd()
{
try
{
Calculator2 cal2 = new Calculator2();

Class<Calculator2> clazz = Calculator2.class;

Method method = clazz.getDeclaredMethod("add", new Class[] {
Integer.TYPE, Integer.TYPE });

method.setAccessible(true);

Object result = method.invoke(cal2, new Object[] { 2, 3 });

Assert.assertEquals(5, result);

}
catch (Exception ex)
{
Assert.fail();
}

}
}