Redefine rails application methods to use Rails.application

Rakefile

@@ -32,7 +32,7 @@
 
 require File.expand_path('config/application', __dir__)
 
-OpenProject::Application.load_rake_tasks
+Rails.application.load_rake_tasks
 
 Rake::Task[:default].clear
 task default: 'test:suite:run'

app/workers/rake_job.rb

@@ -53,7 +53,7 @@ module RakeJob
   ##
   # Load tasks if there are none. This should only be run once in an environment
   def load_tasks!
-    OpenProject::Application.load_rake_tasks unless tasks_loaded?
+    Rails.application.load_rake_tasks unless tasks_loaded?
   end
 
   ##

config/application.rb

@@ -232,13 +232,13 @@ module OpenProject
       Settings::Definition.add_all
     end
 
-    def self.root_url
+    def root_url
       "#{Setting.protocol}://#{Setting.host_name}"
     end
 
     ##
     # Load core and engine tasks we're interested in
-    def self.load_rake_tasks
+    def load_rake_tasks
       load_tasks
       Doorkeeper::Rake.load_tasks
     end