Add a non temp accommocation validation for vacancy reason

app/models/constants/case_log.rb

@@ -107,7 +107,7 @@ module Constants::CaseLog
     "Owner occupation (low cost home ownership)" => 27,
     "Private sector tenancy" => 3,
     "Tied housing or rented with job" => 4,
-    "Supported housing" => 5,
+    "Supported housing" => 6,
     "Sheltered accomodation" => 8,
     "Residential care home" => 9,
     "Living with friends or family" => 28,

app/models/validations/household_validations.rb

@@ -84,6 +84,18 @@ module Validations::HouseholdValidations
     end
   end
 
+  NON_TEMP_ACCOMMODATION = ["Tied housing or rented with job",
+                            "Supported housing",
+                            "Sheltered accomodation",
+                            "Home Office Asylum Support",
+                            "Other"].freeze
+
+  def validate_property_vacancy_reason_not_first_let(record)
+    if record.rsnvac == "Relet to tenant who occupied same property as temporary accommodation" && NON_TEMP_ACCOMMODATION.include?(record.prevten)
+      record.errors.add :rsnvac, I18n.t("validations.property.rsnvac.non_temp_accommodation")
+    end
+  end
+
 private
 
   def women_of_child_bearing_age_in_household(record)

config/locales/en.yml

@@ -55,6 +55,7 @@ en:
         first_let_not_social: "Reason for vacancy cannot be first let if unit has been previously let as social housing"
         first_let_social: "Reason for vacancy must be first let if unit has been previously let as social housing"
         previous_let_social: "Property cannot have a previous let type if it is being let as social housing for the first time"
+        non_temp_accommodation: "Vacancy reason cannot be \"Relet to tenant who occupied same property as temporary accommodation\" if previous tenancy is a non temporary accommodation"
 
     financial:
       tshortfall:

spec/models/case_log_spec.rb

@@ -907,6 +907,25 @@ RSpec.describe Form, type: :model do
         }.to raise_error(ActiveRecord::RecordInvalid)
       end
     end
+
+    context "Validate reason for vacancy" do
+      def check_rsnvac_validation(prevten)
+        expect {
+          CaseLog.create!(rsnvac: "Relet to tenant who occupied same property as temporary accommodation",
+                          prevten: prevten,
+                          owning_organisation: owning_organisation,
+                          managing_organisation: managing_organisation)
+        }.to raise_error(ActiveRecord::RecordInvalid)
+      end
+
+      it "cannot be temp accomodation if previous tenancy was non temp" do
+        check_rsnvac_validation("Tied housing or rented with job")
+        check_rsnvac_validation("Supported housing")
+        check_rsnvac_validation("Sheltered accomodation")
+        check_rsnvac_validation("Home Office Asylum Support")
+        check_rsnvac_validation("Other")
+      end
+    end
   end
 
   describe "status" do