Enable signup before test start

Restore the signup_enabled application setting
in test after
Use Zeitwerk for gitlab page library loader

qa/chemlab-library-gitlab.gemspec

@@ -19,4 +19,5 @@ Gem::Specification.new do |spec|
   spec.require_paths = ['lib']
 
   spec.add_runtime_dependency 'chemlab', '~> 0.9'
+  spec.add_runtime_dependency 'zeitwerk', '~> 2.4'
 end

qa/lib/gitlab.rb

 # frozen_string_literal: true
 
 require 'chemlab/library'
+require 'zeitwerk'
+
+loader = Zeitwerk::Loader.new
+loader.push_dir(__dir__)
+loader.ignore("#{__dir__}/gitlab/**/*.stub.rb") # ignore page stubs
+loader.setup
 
 # Chemlab Page Libraries for GitLab
 module Gitlab
   include Chemlab::Library
-
-  module Page
-    module Main
-      autoload :Login, 'gitlab/page/main/login'
-      autoload :SignUp, 'gitlab/page/main/sign_up'
-    end
-
-    module Subscriptions
-      autoload :New, 'gitlab/page/subscriptions/new'
-    end
-
-    module Admin
-      autoload :Dashboard, 'gitlab/page/admin/dashboard'
-      autoload :Subscription, 'gitlab/page/admin/subscription'
-    end
-
-    module Group
-      module Settings
-        autoload :Billing, 'gitlab/page/group/settings/billing'
-        autoload :UsageQuotas, 'gitlab/page/group/settings/usage_quotas'
-      end
-    end
-  end
 end

qa/lib/gitlab/page/main/welcome.rb

+# frozen_string_literal: true
+
+module Gitlab
+  module Page
+    module Main
+      class Welcome < Chemlab::Page
+        path '/users/sign_up/welcome'
+
+        button :get_started_button
+      end
+    end
+  end
+end

qa/lib/gitlab/page/main/welcome.stub.rb

+# frozen_string_literal: true
+
+module Gitlab
+  module Page
+    module Main
+      module Welcome
+        # @note Defined as +button :get_started_button+
+        # Clicks +get_started_button+
+        def get_started_button
+          # This is a stub, used for indexing. The method is dynamically generated.
+        end
+
+        # @example
+        #   Gitlab::Page::Main::Welcome.perform do |welcome|
+        #     expect(welcome.get_started_button_element).to exist
+        #   end
+        # @return [Watir::Button] The raw +Button+ element
+        def get_started_button_element
+          # This is a stub, used for indexing. The method is dynamically generated.
+        end
+
+        # @example
+        #   Gitlab::Page::Main::Welcome.perform do |welcome|
+        #     expect(welcome).to be_get_started_button
+        #   end
+        # @return [Boolean] true if the +get_started_button+ element is present on the page
+        def get_started_button?
+          # This is a stub, used for indexing. The method is dynamically generated.
+        end
+      end
+    end
+  end
+end

qa/qa/specs/features/ee/browser_ui/fulfillment/purchase/user_registration_billing_spec.rb

 # frozen_string_literal: true
 
 module QA
-  RSpec.describe 'Fulfillment', :requires_admin, :skip_live_env, except: { job: 'review-qa-*' } do
+  RSpec.describe 'Fulfillment', :requires_admin, :skip_live_env do
     describe 'Purchase' do
       describe 'User Registration' do
         let(:group) do
@@ -18,14 +18,25 @@ module QA
         end
 
         before do
+          # Enable sign-ups
+          Runtime::ApplicationSettings.set_application_settings(signup_enabled: true)
+
           # Register the new user through the registration page
           Gitlab::Page::Main::SignUp.perform do |sign_up|
             sign_up.visit
             sign_up.register_user(user)
           end
+
+          # Click the Get Started button on the welcome page if it presents itself
+          Gitlab::Page::Main::Welcome.perform do |welcome|
+            welcome.get_started_button if welcome.get_started_button?
+          end
         end
 
         after do
+          # Restore what the signup_enabled setting was before this test was run
+          Runtime::ApplicationSettings.restore_application_settings(:signup_enabled)
+
           user.remove_via_api!
           group.remove_via_api!
         rescue Resource::ApiFabricator::ResourceNotDeletedError
@@ -35,7 +46,7 @@ module QA
         end
 
         context 'when adding and removing a group member' do
-          it 'consumes a seat on the license', testcase: 'https://gitlab.com/gitlab-org/quality/testcases/-/quality/test_cases/2268', quarantine: { issue: 'https://gitlab.com/gitlab-org/gitlab/-/issues/342675', type: :investigating } do
+          it 'consumes a seat on the license', testcase: 'https://gitlab.com/gitlab-org/quality/testcases/-/quality/test_cases/2268' do
             Flow::Login.sign_in_as_admin
 
             # Save the number of users as stated by the license