ruby capybara.rb（无头铬）

Posted 2021-05-15

# frozen_string_literal: true

require 'capybara/rails'
require 'selenium-webdriver'

def create_headless_chrome_driver(app, width: 1680, height: 1050)
  client = Selenium::WebDriver::Remote::Http::Default.new
  client.read_timeout = 10 # instead of the default 60

  # https://peter.sh/experiments/chromium-command-line-switches/
  capabilities = Selenium::WebDriver::Remote::Capabilities.chrome(
    'goog:chromeOptions': { args: ['headless', "window-size=#{width},#{height}"] },
    loggingPrefs: { browser: 'ALL' },
  )
  Capybara::Selenium::Driver.new(app, browser: :chrome, desired_capabilities: capabilities, http_client: client)
end

Capybara.register_driver :headless_chrome_small do |app|
  create_headless_chrome_driver(app, width:  375, height: 667)
end
Capybara.register_driver :headless_chrome_medium do |app|
  create_headless_chrome_driver(app, width:  960, height: 544)
end
Capybara.register_driver :headless_chrome_large do |app|
  create_headless_chrome_driver(app, width: 1024, height: 768)
end
Capybara.register_driver :headless_chrome_xlarge do |app|
  create_headless_chrome_driver(app, width: 1440, height: 900)
end

if ENV['CHROMEDRIVER_LOGLEVEL']
  Selenium::WebDriver.logger.level = ENV['CHROMEDRIVER_LOGLEVEL']
  Selenium::WebDriver.logger.output = '/tmp/test-results/chromedriver.log'
end

# FIXME
#  以下の設定は実際には効いていない(defaultの`selenium`が使われてしまう)。
#  仕方がないので各system specに
#  `before { Capybara.current_driver = :headless_chrome_xlarge }`
#  をいれて暫定対応とする。
Capybara.current_driver    = :headless_chrome_xlarge
Capybara.javascript_driver = :headless_chrome_xlarge