env.rb

$: << File.expand_path(File.dirname(__FILE__) + "/../support")

#$DEBUG = true
$ROOT_PATH = File.expand_path(File.dirname(__FILE__))

require 'capybara'
require 'capybara/cucumber'
require 'spec'


# Remove this line if you don't want Cucumber Unicode support
require 'cucumber/formatter/unicode'

Capybara.run_server = false

Capybara.app_host = 'http://some.domain'

require 'selenium-webdriver'
Selenium::WebDriver.for :firefox
Capybara.default_driver = :selenium


# Capybara defaults to XPath selectors rather than Webrat's default of CSS3. In
# order to ease the transition to Capybara we set the default here. If you'd
# prefer to use XPath just remove this line and adjust any selectors in your
# steps to use the XPath syntax.
Capybara.default_selector = :css

This can be done a lot more simply now because Capybara bundles selenium-webdriver. It also default to using Firefox:

require 'capybara/cucumber'
Capybara.default_driver = :selenium
Capybara.app_host = 'http://my.app'