public void CanAuthorizeStaffMemberWithSingleRole() {
            var staffMember = new StaffMember {
                Roles = RoleType.Administrator
            };

            Assert.That(staffMember.IsAuthorizedAs(RoleType.Administrator));
            Assert.That(! staffMember.IsAuthorizedAs(RoleType.SupportStaff));
        }
        public void CanAuthorizeStaffMemberWithMultipleRoles() {
            var staffMember = new StaffMember {
                Roles = RoleType.Manager | RoleType.SupportStaff
            };

            Assert.That(staffMember.IsAuthorizedAs(RoleType.Manager));
            Assert.That(staffMember.IsAuthorizedAs(RoleType.SupportStaff));
            Assert.That(! staffMember.IsAuthorizedAs(RoleType.Administrator));
        }