Update shortfall validation

app/models/derived_variables/case_log_variables.rb

@@ -34,15 +34,11 @@ module DerivedVariables::CaseLogVariables
       self.wpschrge = weekly_value(pscharge) if pscharge.present?
       self.wsupchrg = weekly_value(supcharg) if supcharg.present?
       self.wtcharge = weekly_value(tcharge) if tcharge.present?
-      if is_supported_housing? && chcharge.present?
-        self.wchchrg = weekly_value(chcharge)
-      end
+      self.wtshortfall = weekly_value(tshortfall) if tshortfall && receives_housing_related_benefits?
+      self.wchchrg = weekly_value(chcharge) if is_supported_housing? && chcharge.present?
     end
     self.has_benefits = get_has_benefits
     self.tshortfall_known = 0 if tshortfall
-    self.wtshortfall = if tshortfall && receives_housing_related_benefits?
-                         weekly_value(tshortfall)
-                       end
     self.nocharge = household_charge&.zero? ? 1 : 0
     self.housingneeds = get_housingneeds
     if is_renewal?

app/models/validations/financial_validations.rb

@@ -71,9 +71,13 @@ module Validations::FinancialValidations
   end
 
   def validate_rent_amount(record)
-    if record.brent.present? && record.tshortfall.present? && record.brent < record.tshortfall * 2
-      record.errors.add :brent, I18n.t("validations.financial.rent.less_than_double_shortfall", tshortfall: record.tshortfall * 2)
-      record.errors.add :tshortfall, I18n.t("validations.financial.tshortfall.more_than_rent")
+    if record.wtshortfall
+      if record.wrent && (record.wtshortfall > record.wrent)
+        record.errors.add :tshortfall, I18n.t("validations.financial.tshortfall.more_than_rent")
+        record.errors.add :brent, I18n.t("validations.financial.rent.less_than_shortfall")
+      elsif record.wtshortfall < 0.01
+        record.errors.add :tshortfall, I18n.t("validations.financial.tshortfall.must_be_positive")
+      end
     end
 
     if record.tcharge.present? && weekly_value_in_range(record, "tcharge", 0, 9.99)

config/locales/en.yml

@@ -97,7 +97,8 @@ en:
     financial:
       tshortfall:
         outstanding_amount_not_required: "You must not answer the outstanding amount question if you don’t have outstanding rent or charges"
-        more_than_rent: "Answer must be less than half of the basic rent amount"
+        more_than_rent: "Answer must be less than the basic rent amount"
+        must_be_positive: "Answer must be more than £0.01 as you told us there is an outstanding amount"
       hbrentshortfall:
         outstanding_no_benefits: "Answer cannot be ‘yes’ to outstanding amount for basic rent or charges if tenant does not receive housing benefit or Universal Credit or you‘re not sure"
       benefits:
@@ -109,7 +110,7 @@ en:
         earnings_missing: "Enter how much income the household has in total"
       negative_currency: "Enter an amount above 0"
       rent:
-        less_than_double_shortfall: "Answer must be more than double the shortfall in basic rent"
+        less_than_shortfall: "Answer must be more than the shortfall in basic rent"
         scharge:
           private_registered_provider:
             general_needs: "Service charge must be between £0 and £55 per week if the landlord is a private registered provider and it is a general needs letting"

spec/models/validations/financial_validations_spec.rb

@@ -77,14 +77,43 @@ RSpec.describe Validations::FinancialValidations do
     end
 
     context "when outstanding rent or charges is yes" do
+      let(:record) { FactoryBot.create(:case_log, :about_completed) }
+
       it "expects that a shortfall is provided" do
         record.hbrentshortfall = 1
         record.tshortfall = 99
         financial_validator.validate_outstanding_rent_amount(record)
         expect(record.errors["tshortfall"]).to be_empty
       end
+
+        it "validates that the shortfall is a positive £ amount" do
+          record.hb = 6
+          record.hbrentshortfall = 1
+          record.tshortfall_known = 0
+          record.tshortfall = 0
+          record.period = 2
+          record.set_derived_fields!
+          financial_validator.validate_rent_amount(record)
+          expect(record.errors["tshortfall"])
+            .to include(match I18n.t("validations.financial.tshortfall.must_be_positive"))
+        end
+
+        it "validates that basic rent is no less than the shortfall" do
+          record.hb = 6
+          record.hbrentshortfall = 1
+          record.tshortfall_known = 0
+          record.tshortfall = 299.50
+          record.brent = 198
+          record.period = 2
+          record.set_derived_fields!
+          financial_validator.validate_rent_amount(record)
+          expect(record.errors["brent"])
+            .to include(match I18n.t("validations.financial.rent.less_than_shortfall"))
+          expect(record.errors["tshortfall"])
+            .to include(match I18n.t("validations.financial.tshortfall.more_than_rent"))
+        end
+      end
     end
-  end
 
   describe "rent period validations" do
     let(:organisation) { FactoryBot.create(:organisation) }
@@ -213,19 +242,6 @@ RSpec.describe Validations::FinancialValidations do
   end
 
   describe "rent and charges validations" do
-    context "when shortfall amount is provided" do
-      it "validates that basic rent is no less than double the shortfall" do
-        record.hbrentshortfall = 2
-        record.tshortfall = 99.50
-        record.brent = 198
-        financial_validator.validate_rent_amount(record)
-        expect(record.errors["brent"])
-          .to include(match I18n.t("validations.financial.rent.less_than_double_shortfall", shortfall: 198))
-        expect(record.errors["tshortfall"])
-          .to include(match I18n.t("validations.financial.tshortfall.more_than_rent"))
-      end
-    end
-
     context "when the owning organisation is a private registered provider" do
       before { record.owning_organisation.provider_type = 2 }