Use email instead of confirmation token in Devise model (mainly used during stress testing)

user.rb

unless Rails.env.test?
  module Devise
    module Models
      module Confirmable
        module ClassMethods
          # Use email instead of confirmation_token, i.e. if user exist it will be confirmed
          def confirm_by_token(email)
            user_confirmable = find_first_by_auth_conditions(email: email)
            unless user_confirmable
              user_confirmable = find_or_initialize_with_error_by(:email, email)
            end
            user_confirmable.confirm if user_confirmable.persisted?
            user_confirmable
          end
        end
      end
    end
  end
end