Feature: Slack integration (#783)

- Integrations architecture
- Slack integration

spec/rails_helper.rb

@@ -22,7 +22,9 @@ require 'sidekiq/testing'
 # directory. Alternatively, in the individual `*_spec.rb` files, manually
 # require only the support files necessary.
 #
-# Dir[Rails.root.join('spec', 'support', '**', '*.rb')].each { |f| require f }
+# rubocop:disable  Rails/FilePath
+Dir[Rails.root.join('spec', 'support', '**', '*.rb')].sort.each { |f| require f }
+# rubocop:enable  Rails/FilePath
 
 # Checks for pending migrations and applies them before tests are run.
 # If you are not using ActiveRecord, you can remove these lines.
@@ -61,7 +63,7 @@ RSpec.configure do |config|
   config.filter_rails_from_backtrace!
   # arbitrary gems may also be filtered via:
   # config.filter_gems_from_backtrace("gem name")
-
+  config.include SlackStubs
   config.include Devise::Test::IntegrationHelpers, type: :request
 end