assertEquals("1test", systemHelper.getSearchRoleByUser("test"));
        assertEquals("Rtest", systemHelper.getSearchRoleByRole("test"));
        assertEquals("2test", systemHelper.getSearchRoleByGroup("test"));

        assertEquals("1", systemHelper.getSearchRoleByUser(""));
        assertEquals("R", systemHelper.getSearchRoleByRole(""));
        assertEquals("2", systemHelper.getSearchRoleByGroup(""));
    }

            }
            return null;
        }
        if (lower.startsWith(rolePrefix)) {
            if (permission.length() > rolePrefix.length()) {
                return aclPrefix + systemHelper.getSearchRoleByRole(permission.substring(rolePrefix.length()));
            }
            return null;
        }
        return permission;
    }

    /**

        @Override
        public long getCurrentTimeAsLong() {
            return System.currentTimeMillis();
        }

        @Override
        public String getSearchRoleByRole(String role) {
            return "search_" + role;
        }
    }

    static class MockPermissionHelper extends PermissionHelper {
        public MockPermissionHelper() {

    }

    /**
     * Gets the search role for a given role.
     *
     * @param name The role name.
     * @return The search role.
     */
    public String getSearchRoleByRole(final String name) {
        return createSearchRole(ComponentUtil.getFessConfig().getRoleSearchRolePrefix(), name);
    }

    /**
     * Creates a search role string.
     *