capybara_outside_test.rb

# https://github.com/teampoltergeist/poltergeist/issues/419

class RandomController < ApplicationController
  before_filter :check_initialized

  require 'capybara/rails'
  require 'capybara/poltergeist'

  def check_initialized
    unless initialized?
      new_session
    end
  end

  def initialized?
    @initialized
  end

  def new_session
    Capybara.register_driver :poltergeist do |app|
      Capybara::Poltergeist::Driver.new(app, :debug => true)
    end

    Capybara.javascript_driver = :poltergeist
    Capybara.current_driver = :poltergeist
    Capybara.app_host = 'derp.random.com'

    @session = Capybara::Session.new(:poltergeist)

    @initialized = true

    trap("SIGINT") { puts 'Ctrl+C pressed. Check for zombie phantomjs procs!'; exit! } # this is where the magic happens

    # Return the driver's session
    @session
  end
end