Add referral validations

app/models/case_log.rb

@@ -277,6 +277,10 @@ class CaseLog < ApplicationRecord
     landlord == 2
   end
 
+  def is_prevten_la_general_needs?
+    [30, 31].any?(prevten)
+  end
+
 private
 
   PIO = Postcodes::IO.new

app/models/validations/household_validations.rb

@@ -104,6 +104,11 @@ module Validations::HouseholdValidations
       record.errors.add :referral, I18n.t("validations.household.referral.other_homeless")
       record.errors.add :homeless, I18n.t("validations.household.homeless.other.internal_transfer")
     end
+
+    if record.is_internal_transfer? && record.this_landlord? && record.is_prevten_la_general_needs?
+      record.errors.add :referral, I18n.t("validations.household.referral.la_general_needs.internal_transfer")
+      record.errors.add :prevten, I18n.t("validations.household.prevten.la_general_needs.internal_transfer")
+    end
   end
 
   def validate_prevloc(record)

config/locales/en.yml

@@ -177,6 +177,8 @@ en:
         over_20_foster_care: "Answer cannot be children's home or foster care as the lead tenant is 20 or older"
         male_refuge: "Answer cannot be refuge as the lead tenant identifies as male"
         internal_transfer: "Answer cannot be %{prevten} as you already told us this tenancy is an internal transfer"
+        la_general_needs:
+          internal_transfer: "Answer cannot be a fixed-term or lifetime local authority general needs tenancy as you already told us it's the same landlord on the tenancy agreement and it is an internal transfer"
       referral:
         secure_tenancy: "Answer must be internal transfer as you already told us this is a secure tenancy"
         rsnvac_non_temp: "Answer cannot be this source of referral as you already told us this is a re-let to tenant who occupied the same property as temporary accommodation"
@@ -185,6 +187,8 @@ en:
         other_homeless: "Answer cannot be internal transfer as you already told us the tenant was considered homeless by their landlord"
         prevten_invalid: "Answer cannot be internal transfer as you already told us the household situation immediately before this letting was %{prevten}"
         reason_permanently_decanted: "Answer must be internal transfer as you already told us the tenant was permanently decanted from another property owned by this landlord"
+        la_general_needs:
+          internal_transfer: "Answer cannot be internal transfer as you already told us it's the same landlord on the tenancy agreement and the household had either a fixed-term or lifetime local authority general needs tenancy immediately before this letting"
       homeless:
         assessed:
           internal_transfer: "Answer cannot be assessed as homeless as you already told us this tenancy is an internal transfer"

spec/models/validations/household_validations_spec.rb

@@ -196,6 +196,24 @@ RSpec.describe Validations::HouseholdValidations do
         expect(record.errors["referral"])
           .to be_empty
       end
+
+      it "cannot have `this landlord` as landlord and Housing situation before this letting cannot be LA general needs" do
+        record.landlord = 1
+        record.prevten = 30
+        record.referral = 1
+        household_validator.validate_referral(record)
+        expect(record.errors["referral"])
+          .to include(match(I18n.t("validations.household.referral.la_general_needs.internal_transfer")))
+        expect(record.errors["prevten"])
+          .to include(match(I18n.t("validations.household.prevten.la_general_needs.internal_transfer")))
+
+        record.prevten = 31
+        household_validator.validate_referral(record)
+        expect(record.errors["referral"])
+          .to include(match(I18n.t("validations.household.referral.la_general_needs.internal_transfer")))
+        expect(record.errors["prevten"])
+          .to include(match(I18n.t("validations.household.prevten.la_general_needs.internal_transfer")))
+      end
     end
   end