Add old_persons_shared_ownership validation

app/models/sales_log.rb

@@ -190,4 +190,16 @@ class SalesLog < Log
 
     RETIREMENT_AGES[gender]
   end
+
+  def joint_purchase?
+    jointpur == 1
+  end
+
+  def not_joint_purchase?
+    jointpur == 2
+  end
+
+  def old_persons_shared_ownership?
+    type == 24
+  end
 end

app/models/validations/sales/household_validations.rb

@@ -18,6 +18,20 @@ module Validations::Sales::HouseholdValidations
     shared_validate_partner_count(record, 6)
   end
 
+  def validate_buyers_age_for_old_persons_shared_ownership(record)
+    if record.old_persons_shared_ownership?
+      if record.joint_purchase? && ages_unknown_or_under_64?(record, [1, 2])
+        record.errors.add :age1, I18n.t("validations.household.old_persons_shared_ownership")
+        record.errors.add :age2, I18n.t("validations.household.old_persons_shared_ownership")
+        record.errors.add :type, I18n.t("validations.household.old_persons_shared_ownership")
+      end
+      if record.not_joint_purchase? && ages_unknown_or_under_64?(record, [1])
+        record.errors.add :age1, I18n.t("validations.household.old_persons_shared_ownership")
+        record.errors.add :type, I18n.t("validations.household.old_persons_shared_ownership")
+      end
+    end
+  end
+
 private
 
   def validate_person_age_matches_relationship(record, person_num)
@@ -97,4 +111,8 @@ private
   def tenant_is_economic_child?(economic_status)
     economic_status == 9
   end
+  
+  def ages_unknown_or_under_64?(record, person_indexes)
+    person_indexes.all? { |person_num| record["age#{person_num}"].present? && record["age#{person_num}"] < 64 || record["age#{person_num}_known"] == 1 }
+  end
 end

config/locales/en.yml

@@ -367,6 +367,7 @@ en:
         not_internal_transfer: "Answer cannot be ‘permanently decanted from another property owned by this landlord’ as you told us the source of referral for this tenancy was not an internal transfer"
       condition_effects:
         no_choices: "You cannot answer this question as you told us nobody in the household has a physical or mental health condition (or other illness) expected to last 12 months or more"
+      old_persons_shared_ownership: "Are you sure? At least one buyer should be aged over 64 for Older persons‘ shared ownership scheme"
       
     tenancy:
       length:

spec/models/validations/sales/household_validations_spec.rb

@@ -164,5 +164,120 @@ RSpec.describe Validations::Sales::HouseholdValidations do
       expect(record.errors["ecstat2"])
         .to include(match I18n.t("validations.household.ecstat.student_16_19.cannot_be_student.child_not_16_19"))
     end
+
+    context "when it is a joint purchase and both buyers are over 64" do
+      let(:record) { FactoryBot.build(:sales_log, jointpur: 1, age1: 65, age2: 66, type: 24) }
+
+      it "does not add an error" do
+        household_validator.validate_buyers_age_for_old_persons_shared_ownership(record)
+
+        expect(record.errors).not_to be_present
+      end
+    end
+
+    context "when it is a joint purchase and first buyer is over 64" do
+      let(:record) { FactoryBot.build(:sales_log, jointpur: 1, age1: 65, age2: 40, type: 24) }
+
+      it "does not add an error" do
+        household_validator.validate_buyers_age_for_old_persons_shared_ownership(record)
+
+        expect(record.errors).not_to be_present
+      end
+    end
+
+    context "when it is a joint purchase and second buyer is over 64" do
+      let(:record) { FactoryBot.build(:sales_log, jointpur: 1, age1: 43, age2: 64, type: 24) }
+
+      it "does not add an error" do
+        household_validator.validate_buyers_age_for_old_persons_shared_ownership(record)
+
+        expect(record.errors).not_to be_present
+      end
+    end
+
+    context "when it is a joint purchase and neither of the buyers are over 64" do
+      let(:record) { FactoryBot.build(:sales_log, jointpur: 1, age1: 43, age2: 33, type: 24) }
+
+      it "adds an error" do
+        household_validator.validate_buyers_age_for_old_persons_shared_ownership(record)
+
+        expect(record.errors["age1"])
+        .to include(match I18n.t("validations.household.old_persons_shared_ownership"))
+        expect(record.errors["age2"])
+        .to include(match I18n.t("validations.household.old_persons_shared_ownership"))
+        expect(record.errors["type"])
+        .to include(match I18n.t("validations.household.old_persons_shared_ownership"))
+      end
+    end
+
+    context "when it is a joint purchase and first buyer is under 64 and the second buyers' age is unknown" do
+      let(:record) { FactoryBot.build(:sales_log, jointpur: 1, age1: 43, age2_known: 1, type: 24) }
+
+      it "adds an error" do
+        household_validator.validate_buyers_age_for_old_persons_shared_ownership(record)
+
+        expect(record.errors["age1"])
+        .to include(match I18n.t("validations.household.old_persons_shared_ownership"))
+        expect(record.errors["age2"])
+        .to include(match I18n.t("validations.household.old_persons_shared_ownership"))
+        expect(record.errors["type"])
+        .to include(match I18n.t("validations.household.old_persons_shared_ownership"))
+      end
+    end
+
+    context "when it is a joint purchase and neither of the buyers ages are known" do
+      let(:record) { FactoryBot.build(:sales_log, jointpur: 1, age1_known: 1, age2_known: 1, type: 24) }
+
+      it "adds an error" do
+        household_validator.validate_buyers_age_for_old_persons_shared_ownership(record)
+
+        expect(record.errors["age1"])
+        .to include(match I18n.t("validations.household.old_persons_shared_ownership"))
+        expect(record.errors["age2"])
+        .to include(match I18n.t("validations.household.old_persons_shared_ownership"))
+        expect(record.errors["type"])
+        .to include(match I18n.t("validations.household.old_persons_shared_ownership"))
+      end
+    end
+
+    context "when it is not a joint purchase and the buyer is over 64" do
+      let(:record) { FactoryBot.build(:sales_log, jointpur: 2, age1: 70, type: 24) }
+
+      it "does not add an error" do
+        household_validator.validate_buyers_age_for_old_persons_shared_ownership(record)
+
+        expect(record.errors).not_to be_present
+      end
+    end
+
+    context "when it is not a joint purchase and the buyer is under 64" do
+      let(:record) { FactoryBot.build(:sales_log, jointpur: 2, age1: 20, type: 24) }
+
+      it "adds an error" do
+        household_validator.validate_buyers_age_for_old_persons_shared_ownership(record)
+
+        expect(record.errors["age1"])
+        .to include(match I18n.t("validations.household.old_persons_shared_ownership"))
+        expect(record.errors["age2"])
+        .to be_empty
+        expect(record.errors["type"])
+        .to include(match I18n.t("validations.household.old_persons_shared_ownership"))
+      end
+    end
+
+    context "when it is not a joint purchase and the buyers age is not known" do
+      let(:record) { FactoryBot.build(:sales_log, jointpur: 2, age1_known: 1, type: 24) }
+
+      it "adds an error" do
+        household_validator.validate_buyers_age_for_old_persons_shared_ownership(record)
+
+        expect(record.errors["age1"])
+        .to include(match I18n.t("validations.household.old_persons_shared_ownership"))
+        expect(record.errors["age2"])
+        .to be_empty
+        expect(record.errors["type"])
+        .to include(match I18n.t("validations.household.old_persons_shared_ownership"))
+      end
+    end
   end
 end