Setting up for using JS driver in RSpec

gistfile1.rb

config.before(:each, :type => :request) do
  if example.metadata[:js]
    self.class.use_transactional_fixtures = false
  end
end
config.after(:each, :type => :request) do
  if example.metadata[:js]
    self.class.use_transactional_fixtures = true
    DatabaseCleaner.clean       # Truncate the database
    Capybara.reset_sessions!    # Forget the (simulated) browser state
    Capybara.use_default_driver # Revert Capybara.current_driver to Capybara.default_driver
  end
end