# frozen_string_literal: true require 'shoulda-matchers' module Shoulda module Matchers module ActiveModel def require_a_valid_domain_name(attribute = :domain_name) RequireAValidDomainNameMatcher.new(attribute) end class RequireAValidDomainNameMatcher < ValidationMatcher def description "require #{@attribute} to be a valid domain name" end def matches?(subject) super(subject) disallows_invalid_value && allows_valid_value end private def disallows_invalid_value disallows_value_of('example') end def allows_valid_value allows_value_of('example.com') end end end end end