CLDC-3174 Validate stairowned is not equal stairbought (#2198)

* Validate stairowned is not equal stairbought

* Update BU tests

* Update error message

app/models/validations/sales/financial_validations.rb

@@ -52,6 +52,16 @@ module Validations::Sales::FinancialValidations
     end
   end
 
+  def validate_percentage_bought_not_equal_percentage_owned(record)
+    return unless record.stairbought && record.stairowned
+    return unless record.saledate && record.form.start_year_after_2024?
+
+    if record.stairbought == record.stairowned
+      record.errors.add :stairbought, I18n.t("validations.financial.staircasing.percentage_bought_equal_percentage_owned", stairbought: sprintf("%g", record.stairbought), stairowned: sprintf("%g", record.stairowned))
+      record.errors.add :stairowned, I18n.t("validations.financial.staircasing.percentage_bought_equal_percentage_owned", stairbought: sprintf("%g", record.stairbought), stairowned: sprintf("%g", record.stairowned))
+    end
+  end
+
   def validate_percentage_bought_at_least_threshold(record)
     return unless record.stairbought && record.type
 

config/locales/en.yml

@@ -427,6 +427,7 @@ en:
       staircasing:
         percentage_bought_must_be_greater_than_percentage_owned: "Total percentage buyer now owns must be more than percentage bought in this transaction"
         percentage_bought_must_be_at_least_threshold: "The minimum increase in equity while staircasing is %{threshold}%"
+        percentage_bought_equal_percentage_owned: "The percentage bought is %{stairbought}% and the percentage owned in total is %{stairowned}%. These figures cannot be the same."
       monthly_leasehold_charges:
         not_zero: "Monthly leasehold charges cannot be £0 if the property has monthly charges"
       equity:

spec/models/validations/sales/financial_validations_spec.rb

@@ -156,6 +156,53 @@ RSpec.describe Validations::Sales::FinancialValidations do
     end
   end
 
+  describe "#validate_percentage_bought_not_equal_percentage_owned" do
+    let(:record) { FactoryBot.create(:sales_log) }
+
+    context "with 24/25 logs" do
+      before do
+        record.saledate = Time.zone.local(2024, 4, 3)
+        record.save!(validate: false)
+      end
+
+      it "does not add an error if the percentage bought is less than the percentage owned" do
+        record.stairbought = 20
+        record.stairowned = 40
+        financial_validator.validate_percentage_bought_not_equal_percentage_owned(record)
+        expect(record.errors).to be_empty
+      end
+
+      it "adds an error if the percentage bought is equal to the percentage owned" do
+        record.stairbought = 30
+        record.stairowned = 30
+        financial_validator.validate_percentage_bought_not_equal_percentage_owned(record)
+        expect(record.errors["stairowned"]).to include("The percentage bought is 30% and the percentage owned in total is 30%. These figures cannot be the same.")
+        expect(record.errors["stairbought"]).to include("The percentage bought is 30% and the percentage owned in total is 30%. These figures cannot be the same.")
+      end
+
+      it "does not add an error to stairowned and not stairbought if the percentage bought is more than the percentage owned" do
+        record.stairbought = 50
+        record.stairowned = 40
+        financial_validator.validate_percentage_bought_not_equal_percentage_owned(record)
+        expect(record.errors).to be_empty
+      end
+    end
+
+    context "with 23/24 logs" do
+      before do
+        record.saledate = Time.zone.local(2023, 4, 3)
+        record.save!(validate: false)
+      end
+
+      it "does not add an error if the percentage bought is equal to the percentage owned" do
+        record.stairbought = 30
+        record.stairowned = 30
+        financial_validator.validate_percentage_bought_not_equal_percentage_owned(record)
+        expect(record.errors).to be_empty
+      end
+    end
+  end
+
   describe "#validate_monthly_leasehold_charges" do
     let(:record) { FactoryBot.create(:sales_log) }
 

spec/services/bulk_upload/sales/year2024/row_parser_spec.rb

@@ -88,7 +88,7 @@ RSpec.describe BulkUpload::Sales::Year2024::RowParser do
       field_85: "5",
       field_86: "1",
       field_87: "10",
-      field_88: "10",
+      field_88: "11",
       field_89: "1",
       field_91: "30",
       field_92: "3",