}
        };
        roleQueryHelper.init();

        // Mock request with cached USER_ROLES
        Set<String> cachedRoles = new HashSet<>();
        cachedRoles.add("cached_role");
        getMockRequest().setAttribute("userRoles", cachedRoles);

        Set<String> roleSet = roleQueryHelper.build(SearchRequestType.SEARCH);
        assertEquals(1, roleSet.size());

    }

    private static final Logger logger = LogManager.getLogger(RoleQueryHelper.class);

    /**
     * The key for user roles in the request attribute.
     */
    protected static final String USER_ROLES = "userRoles";

    /**
     * The cached cipher for encryption and decryption.
     */
    protected CachedCipher cipher;

    /**
     * The separator for values in the role string.
     */