A test controller that holds a request for the given time, then returns.

holding_controller.rb

# A test controller that holds a request for the given time, then returns.
# Useful for testing requests that time out in Capybara.
#
# Usage:
#   mock_posts_controller = HoldingController.new
#   PostsController.stubs(:new).returns(mock_posts_controller)
#   mock_posts_controller.holding_actions do
#     # do something that should time out
#     assert_text "The request timed out"
#   end
#   PostsController.unstub(:new)
class HoldingController < ActionController::Base
  def holding_actions
    @hold = true
    yield
  ensure
    @hold = false
  end

  def create
    Rails.logger.debug "HOLDING ACTION #{self.class.name}##{__method__.to_s}"
    wait_until_release
    Rails.logger.debug "RELEASED ACTION #{self.class.name}##{__method__.to_s}"
  end

  private

  def wait_until_release
    total_sleep = 0
    while @hold
      sleep 0.1
      total_sleep += 0.1
    end
    Rails.logger.debug "ACTION HELD FOR #{total_sleep.round(2)}s"
  end
end