Capybara Selenium WebDriver running at a lower speed using sleep command #capybara #selenium #rails #

capybara-selenium-webdriver-slow-speed.md

Capybara Selenium WebDriver running at a lower speed using sleep command

Ever wanted to run your integration/end-to-end test suite at a lower speed so that you better could observe what's happening and perhaps make a recording of it?

Here's a a technique I've been using when writing tests with Capybara Selenium WebDriver.

Put this in test/test_helper.rb or maybe something like spec/support/capybara.rb.

# For running Selenium at a lower speed
# Very useful when recording test runs
# https://stackoverflow.com/a/46840590/2037928
if ENV["SLOW"].present?
  require "selenium-webdriver"
  module ::Selenium::WebDriver::Remote
    class Bridge
      alias old_execute execute

      def execute(*args)
        sleep(0.1)
        old_execute(*args)
      end
    end
  end
end

Then set the SLOW=1 environment variable whenever you want to run your tests in slow motion. For example:

• SLOW=1 rails test test/system
• SLOW=1 rspec spec/features

Then if you want to make a recording to GIF I'd recommend LICEcap https://www.cockos.com/licecap/ which I've been using for years now.

---

Thanks to Ken Mayer for this solution on StackOverflow