Selenium script for filling out stripe's checkout popup modal

stripe_modal.rb

# This selenium script will automatically fill out stripe's checkout popup modal
# from the example modal within Stripe's documentation

require 'selenium-webdriver'
require 'rspec/expectations'

def setup
  @driver = Selenium::WebDriver.for :chrome
end

def teardown
  @driver.quit
end

def run
  setup
  yield
  teardown
end

run do
  @driver.get 'https://stripe.com/docs/checkout'
  wait = Selenium::WebDriver::Wait.new(timeout: 10)

  pay_with_card_btn = @driver.find_element(css: 'button.stripe-button-el' )
  wait.until { pay_with_card_btn.displayed? }
  pay_with_card_btn.click

  pay_modal = @driver.find_element(css: 'iframe.stripe_checkout_app' )
  wait.until { pay_modal.displayed? }

  @driver.switch_to.frame "stripe_checkout_app"

  email = @driver.find_element(css: '.Fieldset-input.Textbox-control')
  wait.until { email.displayed? }
  email.send_keys 'something@something.com'

  # This is where the test will fail. The modal seems to detect the automated input
  # and a new panel slides over to ask for a text message input with a button to
  # switch back to manual input
  
  # Your own implementation will probably not have this functionality

  credit_card = @driver.find_element(css: '.is-head-1 .Fieldset-input')
  wait.until { credit_card.displayed? }
  credit_card.send_keys '4242 4242 4242 4242'

  expiration = @driver.find_element(css: '.Fieldset-childLeft .Fieldset-input')
  wait.until { expiration.displayed? }
  expiration.send_keys '02 21'

  cvc = @driver.find_element(css: '.Fieldset-childRight .Fieldset-input')
  wait.until { cvc.displayed? }
  cvc.send_keys '123'

  zip = @driver.find_element(css: '.Fieldset-childBottom .Fieldset-input')
  wait.until { zip.displayed? }
  zip.send_keys '12345'

  pay_btn = @driver.find_element(css: 'button')
  wait.until { pay_btn.displayed? }
  pay_btn.click
end

How is this similar or different to https://gist.github.com/nruth/b2500074749e9f56e0b7? Is this a helper method?