Add route patch for JH and modify country

config/routes.rb

@@ -184,6 +184,10 @@ Rails.application.routes.draw do
       resources :survey_responses, only: :index
     end
 
+    Gitlab.jh do
+      draw :province
+    end
+
     if ENV['GITLAB_CHAOS_SECRET'] || Rails.env.development? || Rails.env.test?
       resource :chaos, only: [] do
         get :leakmem

ee/lib/world.rb

@@ -5,6 +5,7 @@ module World
   extend self
 
   DENYLIST = ['Iran (Islamic Republic of)', 'Sudan', 'Syrian Arab Republic', 'Korea (Democratic People\'s Republic of)', 'Cuba'].freeze
+  JH_MARKET = ['China', 'Hong Kong', 'Macao'].freeze
 
   def countries_for_select
     strong_memoize(:countries_for_select) { all_countries.sort_by(&:name).map { |c| [c.name, c.alpha2] } }
@@ -23,7 +24,7 @@ module World
   end
 
   def all_countries
-    strong_memoize(:all_countries) { ISO3166::Country.all.reject {|item| DENYLIST.include?(item.name) } }
+    strong_memoize(:all_countries) { ISO3166::Country.all.reject {|item| DENYLIST.include?(item.name) || JH_MARKET.include?(item.name) } }
   end
 
   def alpha3_from_alpha2(alpha2)

ee/spec/controllers/countries_controller_spec.rb

@@ -20,6 +20,7 @@ RSpec.describe CountriesController do
       resultant_countries = json_response.map {|row| row[0]}
 
       expect(resultant_countries).not_to include(World::DENYLIST)
+      expect(resultant_countries).not_to include(World::JH_MARKET)
     end
   end
 end