feat: allow missing day/month/year values if CompletionDate exists as we don't always receive these from old core

app/services/imports/sales_logs_import_service.rb

@@ -15,7 +15,7 @@ module Imports
     def create_log(xml_doc)
       # only import sales logs from 22/23 collection period onwards
       return unless meta_field_value(xml_doc, "form-name").include?("Sales")
-      return unless compose_date(xml_doc, "DAY", "MONTH", "YEAR") >= Time.zone.local(2022, 4, 1)
+      return unless (compose_date(xml_doc, "DAY", "MONTH", "YEAR") || Time.zone.parse(field_value(xml_doc, "xmlns", "CompletionDate"))) >= Time.zone.local(2022, 4, 1)
 
       attributes = {}
 
@@ -24,7 +24,7 @@ module Imports
       # Required fields for status complete or logic to work
       # Note: order matters when we derive from previous values (attributes parameter)
 
-      attributes["saledate"] = compose_date(xml_doc, "DAY", "MONTH", "YEAR")
+      attributes["saledate"] = compose_date(xml_doc, "DAY", "MONTH", "YEAR") || Time.zone.parse(field_value(xml_doc, "xmlns", "CompletionDate"))
       attributes["owning_organisation_id"] = find_organisation_id(xml_doc, "OWNINGORGID")
       attributes["type"] = unsafe_string_as_integer(xml_doc, "DerSaleType")
       attributes["old_id"] = meta_field_value(xml_doc, "document-id")

spec/services/imports/sales_logs_import_service_spec.rb

@@ -228,6 +228,31 @@ RSpec.describe Imports::SalesLogsImportService do
       end
     end
 
+    context "and the log startdate is only present in the CompletionDate field" do
+      let(:sales_log_id) { "shared_ownership_sales_log" }
+
+      before do
+        sales_log_xml.at_xpath("//xmlns:DAY").content = nil
+        sales_log_xml.at_xpath("//xmlns:MONTH").content = nil
+        sales_log_xml.at_xpath("//xmlns:YEAR").content = nil
+        sales_log_xml.at_xpath("//xmlns:CompletionDate").content = "2022-10-9"
+        sales_log_xml.at_xpath("//xmlns:HODAY").content = 9
+        sales_log_xml.at_xpath("//xmlns:HOMONTH").content = 10
+        sales_log_xml.at_xpath("//xmlns:HOYEAR").content = 2022
+        sales_log_xml.at_xpath("//xmlns:EXDAY").content = 9
+        sales_log_xml.at_xpath("//xmlns:EXMONTH").content = 10
+        sales_log_xml.at_xpath("//xmlns:EXYEAR").content = 2022
+      end
+
+      it "creates the log with the correct saledate" do
+        expect(logger).not_to receive(:error)
+        expect(logger).not_to receive(:warn)
+        expect { sales_log_service.send(:create_log, sales_log_xml) }
+          .to change(SalesLog, :count).by(1)
+        expect(SalesLog.last.saledate).to eq(Time.zone.local(2022, 10, 9))
+      end
+    end
+
     context "when the log is valid" do
       let(:sales_log_id) { "shared_ownership_sales_log" }