Include this in your test_helper.rb to stub your stripe checkout.js

credit_card_helper.rb

#this is a very simple, work in progress helper method for stubbing the stripe checkout.js

#this creates a fake server that will generate stripe token as if it's coming from stripe. So we can test credit card input
class FakeStripe < Sinatra::Base
  def self.boot
    instance = new
    Capybara::Server.new(instance).tap { |server| server.boot }
  end

  get '/checkout.js' do
    #generate a fake token from stripe as if the user entered a card
    StripeMock.start
    token = StripeMock.generate_card_token(last4: '4242', exp_year: 2020)
    "$(document).ready(function() {
      $('.stripe-button').replaceWith(function() {
        return \"<div id='stripeForm'></div>\";
      });
      $(\"<input type='hidden' id='stripeToken' name='stripeToken' value='#{token}'>\").appendTo('#stripeForm');
      $(\"<input name='commit' type='submit' value='Submit'/>\").appendTo('#stripeForm');
    });"
  end
end

server = FakeStripe.boot
Stripe.api_base = "http://#{server.host}:#{server.port}"