How can I run Selenium (used through Capybara) at a lower speed?

Question

By default Selenium runs as fast as possible through the scenarios I defined using Cucumber. I would like to set it to run at a lower speed, so I am able to capture a video

Answer 1

The methods mentioned in this thread no longer work with Selenium Webdriver v3.

You'll instead need to add a sleep to the execution command.

module Selenium::WebDriver::Remote
  class Bridge
    def execute(command, opts = {}, command_hash = nil)
      verb, path = commands(command) || raise(ArgumentError, "unknown command: #{command.inspect}")
      path = path.dup

      path[':session_id'] = session_id if path.include?(':session_id')

      begin
        opts.each { |key, value| path[key.inspect] = escaper.escape(value.to_s) }
      rescue IndexError
        raise ArgumentError, "#{opts.inspect} invalid for #{command.inspect}"
      end

      Selenium::WebDriver.logger.info("-> #{verb.to_s.upcase} #{path}")
      res = http.call(verb, path, command_hash)
      sleep(0.1) # <--- Add your sleep here.
      res
    end
  end
end

Note this is a very brittle way to slow down the tests since you're monkey patching a private API.