How to set locale default_url_options for functional tests (Rails)

Question

In my application_controller, I have the following set to include the locale with all paths generated by url_for:

  def default_url_options(options={})
    {         


        

Answer 1

alias_method_chain is deprecated in Rails 5, and it seems the Behavior process method has changed.

Here's my modification of Martin Carel's answer above, adapted to Rails 5.

RSpec.configure do |config|
  module ActionController
    class TestCase
      module Behavior
        module LocaleParameter
          def process(action, parameters = {params: {}})
            unless I18n.locale.nil?
              parameters[:params][:locale] = I18n.locale
            end

            super(action, parameters)
          end
        end

        prepend Behavior::LocaleParameter

      end
    end
  end
end

I'm by no means an expert in Rails or Ruby, so if something can be improved in this answer, let me know and I'll change it.