Method: Capybara::Selenium::Driver.load_selenium

Defined in:
lib/capybara/selenium/driver.rb

.load_selenium ⇒ Object 



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# File 'lib/capybara/selenium/driver.rb', line 22

def load_selenium
  require 'selenium-webdriver'
  require 'capybara/selenium/patches/atoms'
  require 'capybara/selenium/patches/is_displayed'

  # Look up the version of `selenium-webdriver` to
  # see if it's a version we support.
  #
  # By default, we use Gem.loaded_specs to determine
  # the version number. However, in some cases, such
  # as when loading `selenium-webdriver` outside of
  # Rubygems, we fall back to referencing
  # Selenium::WebDriver::VERSION. Ideally we'd
  # use the constant in all cases, but earlier versions
  # of `selenium-webdriver` didn't provide the constant.
  @selenium_webdriver_version =
    if Gem.loaded_specs['selenium-webdriver']
      Gem.loaded_specs['selenium-webdriver'].version
    else
      Gem::Version.new(Selenium::WebDriver::VERSION)
    end

  unless Gem::Requirement.new('>= 4.8').satisfied_by? @selenium_webdriver_version
    warn "Warning: You're using an unsupported version of selenium-webdriver, please upgrade to 4.8+."
  end

  @selenium_webdriver_version
rescue LoadError => e
  raise e unless e.message.include?('selenium-webdriver')

  raise LoadError, "Capybara's selenium driver is unable to load `selenium-webdriver`, please install the gem and add `gem 'selenium-webdriver'` to your Gemfile if you are using bundler."
end