change load behaviour in a better engine way and add more tests

lib/cmtool/engine.rb

@@ -14,7 +14,32 @@ require 'bourbon'
 module Cmtool
   class Engine < ::Rails::Engine
     isolate_namespace Cmtool
-    initializer "cmtool" do
+    initializer "cmtool.build_menu" do
+      Cmtool::Menu.register do
+        group label: :site do
+          title t('cmtool.menu.site.title')
+          resource_link Page, scope: Cmtool
+          resource_link Cmtool::Keyword
+        end
+        group label: :publications do
+          title t('cmtool.menu.publications.title')
+          resource_link Cmtool::News
+          resource_link Cmtool::Faq
+          resource_link Cmtool::Quote
+        end
+        group label: :forms do
+          title t('cmtool.menu.forms.title')
+          resource_link Cmtool::ContactForm
+          resource_link Cmtool::NewsletterSubscription
+        end
+        group label: :files do
+          title t('cmtool.menu.files.title')
+          resource_link Cmtool::Image
+          resource_link Cmtool::Directory
+        end
+
+        resource_link User, label: :users, scope: Cmtool
+      end
     end
     ActiveSupport.on_load(:action_view) do
       require File.expand_path('../../../app/helpers/cmtool/application_helper', __FILE__)

lib/cmtool/includes/page.rb

@@ -22,6 +22,7 @@ module Cmtool
 
         klass.validates :name, presence: true
         klass.validates :locale, presence: true
+        klass.validate :parent_locale_match
 
         # RELATIONS
         klass.has_and_belongs_to_many :keywords, storing_keys: true, class_name: 'Cmtool::Keyword'
@@ -36,6 +37,12 @@ module Cmtool
         def generate_name
           name = self.class.generate_name(title)
         end
+      private
+        def parent_locale_match
+          if parent.present?
+            errors.add(:locale, 'must be the same as the parent') unless parent.locale == locale
+          end
+        end
       end
 
       module ClassMethods

lib/cmtool/version.rb

@@ -1,3 +1,3 @@
 module Cmtool
-  VERSION = "0.4.0"
+  VERSION = "0.5.0"
 end