Add payment form URL

lib/gitlab/subscription_portal.rb

@@ -9,8 +9,13 @@ module Gitlab
     def self.subscriptions_url
       ENV.fetch('CUSTOMER_PORTAL_URL', default_subscriptions_url)
     end
+
+    def self.payment_form_url
+      "#{self.subscriptions_url}/payment_forms/cc_validation"
+    end
   end
 end
 
 Gitlab::SubscriptionPortal.prepend_mod
 Gitlab::SubscriptionPortal::SUBSCRIPTIONS_URL = Gitlab::SubscriptionPortal.subscriptions_url.freeze
+Gitlab::SubscriptionPortal::PAYMENT_FORM_URL = Gitlab::SubscriptionPortal.payment_form_url.freeze

spec/lib/gitlab/subscription_portal_spec.rb

@@ -40,5 +40,42 @@ RSpec.describe ::Gitlab::SubscriptionPortal do
         end
       end
     end
+
+    describe '.payment_form_url' do
+      subject { described_class.payment_form_url }
+
+      context 'on non test and non dev environments' do
+        before do
+          allow(Rails).to receive_message_chain(:env, :test?).and_return(false)
+          allow(Rails).to receive_message_chain(:env, :development?).and_return(false)
+        end
+
+        it 'returns URL to production payment form' do
+          is_expected.to eq('https://customers.gitlab.com/payment_forms/cc_validation')
+        end
+      end
+
+      context 'on dev environment' do
+        before do
+          allow(Rails).to receive_message_chain(:env, :test?).and_return(false)
+          allow(Rails).to receive_message_chain(:env, :development?).and_return(true)
+        end
+
+        it 'returns URL to staging payment form' do
+          is_expected.to eq('https://customers.stg.gitlab.com/payment_forms/cc_validation')
+        end
+      end
+
+      context 'on test environment' do
+        before do
+          allow(Rails).to receive_message_chain(:env, :test?).and_return(true)
+          allow(Rails).to receive_message_chain(:env, :development?).and_return(false)
+        end
+
+        it 'returns URL to staging payment form' do
+          is_expected.to eq('https://customers.stg.gitlab.com/payment_forms/cc_validation')
+        end
+      end
+    end
   end
 end