Add la validation if rent type is lar or london living rent (#148)

app/models/constants/case_log.rb

@@ -699,4 +699,38 @@ module Constants::CaseLog
     "London living rent" => "Intermediate Rent",
     "Other intermediate rent product" => "Intermediate Rent",
   }.freeze
+
+  LONDON_BOROUGHS = ["City of London",
+                     "Barking & Dagenham",
+                     "Barnet",
+                     "Bexley",
+                     "Brent",
+                     "Bromley",
+                     "Camden",
+                     "Croydon",
+                     "Ealing",
+                     "Enfield",
+                     "Greenwich",
+                     "Hackney",
+                     "Hammersmith & Fulham",
+                     "Haringey",
+                     "Harrow",
+                     "Havering",
+                     "Hillingdon",
+                     "Hounslow",
+                     "Islington",
+                     "Kensington & Chelsea",
+                     "Kingston-upon-Thames",
+                     "Lambeth",
+                     "Lewisham",
+                     "Merton",
+                     "Newham",
+                     "Redbridge",
+                     "Richmond-upon-Thames",
+                     "Southwark",
+                     "Sutton",
+                     "Tower Hamlets",
+                     "Waltham Forest",
+                     "Wandsworth",
+                     "Westminster"].freeze
 end

app/models/validations/property_validations.rb

@@ -1,9 +1,16 @@
 module Validations::PropertyValidations
   # Validations methods need to be called 'validate_<page_name>' to run on model save
   # or 'validate_' to run on submit as well
+  include Constants::CaseLog
   def validate_property_number_of_times_relet(record)
     if record.offered && !/^[1-9]$|^0[1-9]$|^1[0-9]$|^20$/.match?(record.offered.to_s)
       record.errors.add :offered, "Property number of times relet must be between 0 and 20"
     end
   end
+
+  def validate_la(record)
+    if record.la.present? && !LONDON_BOROUGHS.include?(record.la) && (record.rent_type == "London Affordable rent" || record.rent_type == "London living rent")
+      record.errors.add :la, "Local authority has to be in London"
+    end
+  end
 end

spec/models/case_log_spec.rb

@@ -808,6 +808,24 @@ RSpec.describe Form, type: :model do
         }.not_to raise_error
       end
     end
+
+    context "Validate local authority" do
+      it "Has to be london if rent type london affordable rent" do
+        expect {
+          CaseLog.create!(la: "Ashford",
+                          rent_type: "London Affordable rent",
+                          owning_organisation: owning_organisation,
+                          managing_organisation: managing_organisation)
+        }.to raise_error(ActiveRecord::RecordInvalid)
+
+        expect {
+          CaseLog.create!(la: "Westminster",
+                          rent_type: "London Affordable rent",
+                          owning_organisation: owning_organisation,
+                          managing_organisation: managing_organisation)
+        }.not_to raise_error
+      end
+    end
   end
 
   describe "status" do