request.setAttribute(Constants.USER_CODE, "testUserCode");
        assertEquals("testUserCode", userInfoHelper.getUserCode());
    }

    public void test_getUserCode_withValidRequestParameter() {
        UserInfoHelper userInfoHelper = new UserInfoHelper();
        MockletHttpServletRequest request = getMockRequest();

        request.setParameter("userCode", "12345abcde12345ABCDE");