Add specs for User#is_admin?

spec/rails_helper.rb

@@ -7,6 +7,8 @@ abort("The Rails environment is running in production mode!") if Rails.env.produ
 require 'rspec/rails'
 # Add additional requires below this line. Rails is not loaded until this point!
 require 'capybara'
+require 'devise'
+require 'support/controller_macros'
 require 'support/database_cleaner'
 
 # Requires supporting ruby files with custom matchers and macros, etc, in
@@ -63,4 +65,8 @@ 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 Devise::Test::ControllerHelpers, :type => :controller
+  config.include FactoryBot::Syntax::Methods
+  config.extend ControllerMacros, :type => :controller
 end