charges_controller.rb

class ChargesController < ApplicationController
  def new
  end

  def create
    @amount = params[:amount]

    @amount = @amount.gsub('$', '').gsub(',', '')

    begin
      @amount = Float(@amount).round(2)
    rescue
      flash[:error] = 'Charge not completed. Please enter a valid amount in USD ($).'
      redirect_to new_charge_path
      return
    end

    @amount = (@amount * 100).to_i # Must be an integer!

    if @amount < 500
      flash[:error] = 'Charge not completed. Donation amount must be at least $5.'
      redirect_to new_charge_path
      return
    end

    customer = Stripe::Customer.create(
        :email => params[:stripeEmail],
        :source  => params[:stripeToken]
      )

    binding.pry


    if params[:subscription] == 'no'
     charge =  Stripe::Charge.create(
        :amount => @amount,
        :currency => 'usd',
        :description => 'Donation',
        :customer => customer.id
      )
    elsif params[:subscription] == 'yes'
      subscrption = Stripe::Subscription.create(
        :customer => customer.id,
        items: [{plan: params[:plan]}]
      )
    end
   
    Membership.create(name: 'foo', password: SecureRandom.alphanumeric, email: params[:stripeEmail], role: 'guest')


  rescue Stripe::CardError => e
    flash[:error] = e.message
    redirect_to new_charge_path
    binding.pry
  end
end

spec_helper.rb

RSpec.configure do |config|
  require 'capybara/rspec'
  require 'webmock/rspec'
  ...
end

user_donates_spec.rb

require 'rails_helper'

RSpec.feature "User Donates", :type => :feature do
  it "creates a membership with user email", js: true do
    approved_card_number = '4242424242424242'
    visit new_charge_path
    first('.donationAmount').click
    click_button('Donate')
    stripe_iframe = all('iframe[name=stripe_checkout_app]').last
    Capybara.within_frame stripe_iframe do
      find_field('Email').send_keys("[email protected]")
      find_field('Card number').send_keys(approved_card_number)
      find_field('MM / YY').send_keys "01#{DateTime.now.year + 1}"
      find_field('CVC').send_keys '123'
      find('button[type="submit"]').click
    end
      #not getting the created customer biding pry not being hit
  end
end