add some tests for payment

Author: Edge7481

app/models/currency_conversion.rb

@@ -31,6 +31,8 @@ def self.convert_currency(conference, amount, from_currency, to_currency)
     if conversion
       Money.add_rate(from_currency, to_currency, conversion.rate)
       amount.exchange_to(to_currency)
+    elsif from_currency == to_currency
+      amount
     else
       Money.from_amount(-1, 'USD')
     end

spec/features/ticket_purchases_spec.rb

@@ -226,6 +226,29 @@ def make_failed_stripe_purchase
         select 'GBP', from: 'currency_selector'
         expect(page).to have_content('£')
       end
+
+      it 'buys a ticket in EUR' do
+
+        select 'EUR', from: 'currency_selector'
+        fill_in "tickets__#{third_registration_ticket.id}", with: '1'
+        expect(page).to have_current_path(conference_tickets_path(conference.short_title), ignore_query: true)
+        click_button 'Continue'
+        page.find('#flash')
+        expect(page).to have_current_path(new_conference_payment_path(conference.short_title), ignore_query: true)
+        expect(flash).to eq('Please pay here to get tickets.')
+        purchase = TicketPurchase.where(user_id: participant.id, ticket_id: third_registration_ticket.id).first
+        expect(purchase.quantity).to eq(1)
+        expect(purchase.currency).to eq('EUR')
+        expect(purchase.amount_paid).to eq(17.80)
+
+        if ENV['STRIPE_PUBLISHABLE_KEY'] || Rails.application.secrets.stripe_publishable_key
+          make_stripe_purchase
+          expect(page).to have_current_path(new_conference_conference_registration_path(conference.short_title),
+                                            ignore_query: true)
+          expect(page).to have_content 'Your ticket is booked successfully.'
+        end
+      end
+
     end
 
     context 'who is registered' do

spec/models/payment_spec.rb

@@ -80,6 +80,10 @@
       it 'assigns authorization_code' do
         expect(payment.authorization_code).to eq('test_ch_3')
       end
+
+      it 'assigns currency' do
+        expect (payment.currency).to eq('USD')
+      end
     end
 
     context 'if the payment is not successful' do

spec/models/ticket_purchase_spec.rb

@@ -44,6 +44,10 @@
       expect(subject).not_to allow_value(-1).for(:quantity)
     end
 
+    it 'is not valid without a currency' do
+      expect(subject).to validate_presence_of(:currency)
+    end
+
     it 'is valid with a quantity greater than zero' do
       expect(subject).to allow_value(1).for(:quantity)
     end