Check speed of text in rack_test

check_racktest_text.rb

require 'capybara'
require 'benchmark'

[
  'http://www.stackoverflow.com',
  'http://www.google.com',
  'http://www.facebook.com',
  'http://www.github.com',
].each do |url|
  sess = Capybara::Session.new(:selenium)
  sess.visit(url)
  source = sess.html

  app = proc { |env| [200, { "Content-Type" => "text/html" }, [source] ] }
  sess = Capybara::Session.new(:rack_test, app)
  sess.visit("/")
  time = Benchmark.realtime do
    sess.text
  end
  puts "Time for #{url}: #{time}"
end