repair tests and move method belonging to controller

app/controllers/payments_controller.rb

@@ -18,7 +18,7 @@ class PaymentsController < ApplicationController
 
     if @payment.valid? && @payment.purchase(current_user, @conference, price_in_cents)
       if @payment.save
-        @update_ticket_purchases = TicketPurchase.update_paid_ticket_purchases(@conference, current_user, @payment)
+        update_paid_ticket_purchases(@conference, current_user, @payment)
         redirect_to conference_conference_registrations_path(@conference.short_title), flash: { success: 'Thanks! You have purchased your tickets successfully.' }
       else
         render 'new'
@@ -32,6 +32,19 @@ class PaymentsController < ApplicationController
     (@payment.amount * 100).round
   end
 
+  def update_paid_ticket_purchases(conference, user, payment)
+    paid_ticket_purchases = TicketPurchase.where(conference_id: conference.id,
+                                                 user_id: user.id,
+                                                 paid: false)
+    begin
+      paid_ticket_purchases.each do |ticket|
+        ticket.paid = true
+        ticket.payment_id = payment.id
+        ticket.save
+      end
+    end
+  end
+
   def payment_params
     params.require(:payment).permit(:first_name, :last_name, :credit_card_number, :expiration_month, :expiration_year, :card_verification_value, :amount)
   end

app/models/payment.rb

@@ -57,4 +57,9 @@ class Payment < ActiveRecord::Base
     self.status = 'success'
     response.success?
   end
+
+  # method to test `purchase` method
+  def self.make_payment(user, conference, price_in_cents, payment)
+    payment.purchase(user, conference, price_in_cents)
+  end
 end

app/models/ticket_purchase.rb

@@ -50,17 +50,4 @@ class TicketPurchase < ActiveRecord::Base
     purchase.quantity = quantity if quantity > 0
     purchase
   end
-
-  def self.update_paid_ticket_purchases(conference, user, payment)
-    paid_ticket_purchases = TicketPurchase.where(conference_id: conference.id,
-                                                 user_id: user.id,
-                                                 paid: false)
-    begin
-      paid_ticket_purchases.each do |ticket|
-        ticket.paid = true
-        ticket.payment_id = payment.id
-        ticket.save
-      end
-    end
-  end
 end