add more tests to check Stripe exceptions

spec/features/ticket_purchases_spec.rb

@@ -1,4 +1,5 @@
 require 'spec_helper'
+require 'stripe_mock'
 
 feature Registration do
   let!(:ticket) { create(:ticket) }
@@ -8,15 +9,19 @@ feature Registration do
   context 'as a participant' do
     before(:each) do
       sign_in participant
+      StripeMock.start
     end
 
     after(:each) do
+      StripeMock.stop
       sign_out
     end
 
+    let(:stripe_helper) { StripeMock.create_test_helper }
+
     context 'who is not registered' do
 
-      scenario 'purchases a ticket', feature: true, js: true do
+      scenario 'purchases and pays for a ticket succcessfully', feature: true, js: true do
         visit root_path
         click_link 'Register'
 
@@ -32,6 +37,12 @@ feature Registration do
         expect(flash).to eq('Please pay here to purchase tickets.')
         purchase = TicketPurchase.where(user_id: participant.id, ticket_id: ticket.id).first
         expect(purchase.quantity).to eq(2)
+
+        # token = stripe_helper.generate_card_token
+        # merge token, email and submit form
+        # page.execute_script("$('form').submit()")
+
+        expect(current_path).to eq(conference_conference_registration_path(conference.short_title))
       end
     end
   end