test: add setup validations tests

spec/models/validations/sales/setup_validations_spec.rb

@@ -0,0 +1,39 @@
+require "rails_helper"
+
+RSpec.describe Validations::Sales::SetupValidations do
+  subject(:setup_validator) { validator_class.new }
+
+  let(:validator_class) { Class.new { include Validations::Sales::SetupValidations } }
+
+  describe "#validate_saledate" do
+    context "when saledate is blank" do
+      let(:record) { FactoryBot.build(:sales_log, saledate: nil) }
+
+      it "does not add an error" do
+        setup_validator.validate_saledate(record)
+
+        expect(record.errors).to be_empty
+      end
+    end
+
+    context "when saledate is in the 22/23 financial year" do
+      let(:record) { FactoryBot.build(:sales_log, saledate: Time.zone.local(2023, 1, 1)) }
+
+      it "does not add an error" do
+        setup_validator.validate_saledate(record)
+
+        expect(record.errors).to be_empty
+      end
+    end
+
+    context "when saledate is not the 22/23 financial year" do
+      let(:record) { FactoryBot.build(:sales_log, saledate: Time.zone.local(2022, 1, 1)) }
+
+      it "adds error" do
+        setup_validator.validate_saledate(record)
+
+        expect(record.errors[:saledate]).to include(I18n.t("validations.setup.saledate.financial_year"))
+      end
+    end
+  end
+end