Add e2e tests for upgrade group subscription with existing add-on purchase

qa/qa/specs/features/ee/browser_ui/11_fulfillment/purchase/upgrade_group_spec.rb

 # frozen_string_literal: true
 
 module QA
+  include QA::Support::Helpers::Plan
+
   RSpec.describe 'Fulfillment', :requires_admin, only: { subdomain: :staging } do
     describe 'Purchase' do
       describe 'group plan' do
@@ -35,39 +37,54 @@ module QA
         end
 
         it 'upgrades from free to ultimate', testcase: 'https://gitlab.com/gitlab-org/gitlab/-/quality/test_cases/347667' do
+          Flow::Purchase.upgrade_subscription(plan: ULTIMATE)
+
           Page::Group::Menu.perform(&:go_to_billing)
-          Gitlab::Page::Group::Settings::Billing.perform(&:upgrade_to_ultimate)
 
-          Gitlab::Page::Subscriptions::New.perform do |new_subscription|
-            # Subscription details
-            new_subscription.continue_to_billing
+          Gitlab::Page::Group::Settings::Billing.perform do |billing|
+            expect do
+              billing.billing_plan_header
+            end.to eventually_include("#{group.path} is currently using the Ultimate SaaS Plan").within(max_duration: 120, max_attempts: 60, reload_page: page)
+          end
+        end
 
-            # Billing information
-            new_subscription.country = 'United States of America'
-            new_subscription.street_address_1 = 'QA Test Address 1'
-            new_subscription.city = 'San Francisco'
-            new_subscription.state = 'California'
-            new_subscription.zip_code = '94102'
-            new_subscription.continue_to_payment
+        context 'with existing CI minutes pack' do
+          let(:ci_minutes_quantity) { 5 }
 
-            # Payment method
-            new_subscription.name_on_card = 'QA Test User'
-            new_subscription.card_number = '4111 1111 1111 1111'
-            new_subscription.expiration_month = '01'
-            new_subscription.expiration_year = '2030'
-            new_subscription.cvv = '789'
-            new_subscription.review_your_order
+          before do
+            Resource::Project.fabricate_via_api! do |project|
+              project.name = 'ci-minutes'
+              project.group = group
+              project.initialize_with_readme = true
+              project.api_client = Runtime::API::Client.as_admin
+            end
 
-            # Confirm
-            new_subscription.confirm_purchase
+            Flow::Purchase.purchase_ci_minutes(quantity: ci_minutes_quantity)
           end
 
-          Page::Group::Menu.perform(&:go_to_billing)
+          it 'upgrades from free to premium with correct CI minutes', testcase: 'https://gitlab.com/gitlab-org/gitlab/-/quality/test_cases/349085' do
+            Flow::Purchase.upgrade_subscription(plan: PREMIUM)
+
+            expected_minutes = CI_MINUTES[:ci_minutes] * ci_minutes_quantity
+            plan_limits = PREMIUM[:ci_minutes]
 
+            Page::Group::Menu.perform(&:go_to_billing)
             Gitlab::Page::Group::Settings::Billing.perform do |billing|
               expect do
                 billing.billing_plan_header
-            end.to eventually_include("#{group.path} is currently using the Ultimate SaaS Plan").within(max_duration: 120, max_attempts: 60, reload_page: page)
+              end.to eventually_include("#{group.path} is currently using the Premium SaaS Plan").within(max_duration: 120, max_attempts: 60, sleep_interval: 2, reload_page: page)
+            end
+
+            Page::Group::Menu.perform(&:go_to_usage_quotas)
+            Gitlab::Page::Group::Settings::UsageQuotas.perform do |usage_quota|
+              usage_quota.pipeline_tab
+
+              expect { usage_quota.additional_ci_minutes? }.to eventually_be_truthy.within(max_duration: 120, max_attempts: 60, reload_page: page)
+              aggregate_failures do
+                expect(usage_quota.additional_ci_limits).to eq(expected_minutes.to_s)
+                expect(usage_quota.plan_ci_limits).to eq(plan_limits.to_s)
+              end
+            end
           end
         end
       end