capybara/poltergeist

gistfile1.rb

require 'rubygems'
require 'capybara'
require 'capybara/dsl'
require 'capybara/poltergeist'


Capybara.run_server = false
Capybara.current_driver = :poltergeist 
Capybara.javascript_driver = :poltergeist
Capybara.app_host = 'http://www.youtube.com'

Capybara.register_driver :poltergeist do |app|
  Capybara::Poltergeist::Driver.new(app, {:phantomjs => 'phantomjs'})
end

module MyCapybaraTest
  class Test
    include Capybara::DSL
    def test_youtube
      a = visit('/watch?v=J---aiyznGQ')
      sleep 10
      page.driver.render('ss.png', :full => false)
    end
  end
end

t = MyCapybaraTest::Test.new
t.test_youtube