ActionController::Testing::ClassMethods Ruby on Rails 5.1.2 Module ActionController::Testing::ClassMethods actionpack/lib/action_controller/metal/testing.rb Methods B before_filters Instance Public methods before_filters() Link Source: show | on GitHub # File actionpack/lib/action_controller/metal/testing.rb, line 15 def before_filters _process_action_callbacks.find_all { |x| x.kind == :before }.map(&:name) end