default competitor limit to 0 if null (#724)

app/services/registration_checker.rb

@@ -173,7 +173,7 @@ def validate_update_status!
 
       raise RegistrationError.new(:unprocessable_entity, ErrorCodes::INVALID_REQUEST_DATA) unless Registration::REGISTRATION_STATES.include?(new_status)
 
-      competitor_limit = @competition_info.competitor_limit
+      competitor_limit = @competition_info.competitor_limit || 0
       raise RegistrationError.new(:forbidden, ErrorCodes::COMPETITOR_LIMIT_REACHED) if
         new_status == 'accepted' && competitor_limit > 0 && Registration.accepted_competitors_count(@competition_info.competition_id) >= competitor_limit
 

spec/services/registration_checker_spec.rb

@@ -1127,6 +1127,15 @@
           .not_to raise_error
       end
 
+      it 'organizer can accept registrations limit is nil' do
+        registration = FactoryBot.create(:registration, registration_status: 'pending')
+        competition_info = CompetitionInfo.new(FactoryBot.build(:competition, competitor_limit: nil))
+        update_request = FactoryBot.build(:update_request, :organizer_for_user, user_id: registration[:user_id], competing: { 'status' => 'accepted' })
+
+        expect { RegistrationChecker.update_registration_allowed!(update_request, competition_info, update_request['submitted_by']) }
+          .not_to raise_error
+      end
+
       it 'user can change state to cancelled' do
         override_registration = FactoryBot.create(:registration, user_id: 188000, registration_status: 'waiting_list')
         update_request = FactoryBot.build(:update_request, user_id: override_registration[:user_id], competing: { 'status' => 'cancelled' })