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

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

    @Test
    public void test_getUserCode_withValidRequestParameter() {

    /** Results per page parameter name. */
    public static final String RESULTS_PER_PAGE = "resultsPerPage";

    /** User code parameter name. */
    public static final String USER_CODE = "userCode";

    /** Search query field name for logging. */
    public static final String SEARCH_FIELD_LOG_SEARCH_QUERY = "q";

    /** Statistics report type parameter name. */