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

I tried a lot of examples, but only this one helped me. It is concise and simple. Add this code snippet to the test.rb:

Rails.application.configure do
  # ... other config ...

  routes.default_url_options[:locale] = :en
end

Works on Rails 5.1.4