junit单元测试中私有方法测试

@Test
    public void testGetKey(){
        Map<String,Object> map = new HashMap<String,Object>();
        map.put("pin","abc");
        map.put("uuid","test");
        map.put("listPic","listPic"); 
        Method method = null;// 要调用的方法是SetCommodity_number
        try {
        
        method = UserBehaviorUtil.class.getDeclaredMethod("getKey",new Class[]{String.class,Map.class});
        } catch (NoSuchMethodException e) {
            e.printStackTrace();
        }
        
        method.setAccessible(true);// 允许处理私有方法
        try {
            Object obj = method.invoke(UserBehaviorUtil.class, new Object[] { "abc",map });// 调用方法
            assertNotNull(obj);
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        }
        
        method.setAccessible(false);
    }