Add has_many folded_pages association to Spree::User

Rails 6 checks on the reverse association being present.

.gitignore

@@ -2,5 +2,6 @@
 log/*.log
 pkg/
 /spec/dummy/
+!/spec/dummy/app/models/spree/user.rb
 Gemfile.lock
 .ruby-version

lib/alchemy/solidus/spree_user_extension.rb

@@ -1,6 +1,10 @@
 module Alchemy
   module Solidus
     module SpreeUserExtension
+      def self.included(klass)
+        klass.has_many :folded_pages, class_name: "Alchemy::FoldedPage"
+      end
+
       def alchemy_roles
         if has_spree_role?(:admin)
           %w(admin)

spec/dummy/app/models/spree/user.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+require "alchemy/solidus/spree_user_extension"
+
+class Spree::User < ActiveRecord::Base
+  include Alchemy::Solidus::SpreeUserExtension
+end

spec/models/spree/user_spec.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+require "rails_helper"
+
+RSpec.describe Spree::User do
+  it { is_expected.to have_many(:folded_pages).class_name("Alchemy::FoldedPage") }
+end