test_tor.rb

require 'mechanize'
require 'tor'

if Tor.available?
  agent = Mechanize.new do |agent|
    agent.user_agent_alias = 'Mac Safari'
    agent.set_proxy('localhost', 8118)
    agent.get('http://whatismyipaddress.com/') do |page|
      puts page.search("//input[@name='LOOKUPADDRESS']//@value").text
      puts page.search("//tr[th='City:']//td").text
      puts page.search("//tr[th='Region:']//td").text
      puts page.search("//tr[th='Country:']//td").text
    end
  end
else
  puts 'Tor is unavailable'
end