Assert redirect helper for Turbolinks (untested code)

turbolinks_helpers.rb

module TurbolinksHelpers
  def assert_turbolinks_redirected_to(options = {}, message = nil)
    assert_response(:success, message)
    assert_equal("text/javascript", @response.content_type)
    
    redirect_is       = @response.body[/Turbolinks.visit\("([^"]+)/, 1]
    redirect_expected = normalize_argument_to_redirection(options)
    
    assert_operator redirect_expected, :===, redirect_is, message
  end
end