Add unit tests for backfilling notice location from buyer

- Introduced `mapper_test.go` to validate the functionality of backfilling notice location details from the buyer organization.
- Implemented two test cases: one to ensure the location fields are correctly populated from the buyer when they are empty, and another to verify that existing values are not overwritten.
- Enhanced the `mapper.go` file by adding the `backfillNoticeLocationFromBuyer` function to facilitate this logic.

This update improves the reliability of notice data handling within the tender management system by ensuring accurate location information is maintained.

ted/mapper.go

@@ -226,6 +226,7 @@ func (s *TEDScraper) mapPriorInformationNoticeToTender(pin *PriorInformationNoti
 			t.BuyerOrganization = s.mapOrganization(buyerOrg, "buyer")
 		}
 	}
+	backfillNoticeLocationFromBuyer(t)
 
 	reviewID := pin.GetReviewOrganizationID()
 	if reviewID != "" {
@@ -407,6 +408,7 @@ func (s *TEDScraper) mapToTender(cn *ContractNotice, sourceFileURL, sourceFileNa
 			t.BuyerOrganization = s.mapOrganization(buyerOrg, "buyer")
 		}
 	}
+	backfillNoticeLocationFromBuyer(t)
 
 	// Set review organization
 	reviewID := cn.GetReviewOrganizationID()
@@ -570,6 +572,7 @@ func (s *TEDScraper) mapContractAwardNoticeToTender(can *ContractAwardNotice, so
 			t.BuyerOrganization = s.mapOrganization(buyerOrg, "buyer")
 		}
 	}
+	backfillNoticeLocationFromBuyer(t)
 
 	// Set all organizations
 	if orgs := can.GetOrganizations(); orgs != nil {
@@ -667,6 +670,25 @@ func (s *TEDScraper) mapOrganization(tedOrg *Organization, role string) *notice.
 	return org
 }
 
+func backfillNoticeLocationFromBuyer(t *notice.Notice) {
+	if t == nil || t.BuyerOrganization == nil {
+		return
+	}
+	buyer := t.BuyerOrganization.Address
+	if strings.TrimSpace(t.CountryCode) == "" && strings.TrimSpace(buyer.CountryCode) != "" {
+		t.CountryCode = strings.TrimSpace(buyer.CountryCode)
+	}
+	if strings.TrimSpace(t.CityName) == "" && strings.TrimSpace(buyer.CityName) != "" {
+		t.CityName = strings.TrimSpace(buyer.CityName)
+	}
+	if strings.TrimSpace(t.PostalCode) == "" && strings.TrimSpace(buyer.PostalZone) != "" {
+		t.PostalCode = strings.TrimSpace(buyer.PostalZone)
+	}
+	if strings.TrimSpace(t.RegionCode) == "" && strings.TrimSpace(buyer.CountrySubentityCode) != "" {
+		t.RegionCode = strings.TrimSpace(buyer.CountrySubentityCode)
+	}
+}
+
 func backfillNoticeEstimatedValueFromLots(t *notice.Notice) {
 	if t == nil || t.EstimatedValue > 0 {
 		return

ted/mapper_test.go

@@ -0,0 +1,64 @@
+package ted
+
+import (
+	"testing"
+	"tm/internal/notice"
+)
+
+func TestBackfillNoticeLocationFromBuyer(t *testing.T) {
+	n := &notice.Notice{
+		BuyerOrganization: &notice.Organization{
+			Address: notice.Address{
+				CountryCode:          "POL",
+				CityName:             "Warsaw",
+				PostalZone:           "00-001",
+				CountrySubentityCode: "PL14",
+			},
+		},
+	}
+	backfillNoticeLocationFromBuyer(n)
+
+	if n.CountryCode != "POL" {
+		t.Fatalf("expected country POL, got %q", n.CountryCode)
+	}
+	if n.CityName != "Warsaw" {
+		t.Fatalf("expected city Warsaw, got %q", n.CityName)
+	}
+	if n.PostalCode != "00-001" {
+		t.Fatalf("expected postal 00-001, got %q", n.PostalCode)
+	}
+	if n.RegionCode != "PL14" {
+		t.Fatalf("expected region PL14, got %q", n.RegionCode)
+	}
+}
+
+func TestBackfillNoticeLocationFromBuyerDoesNotOverwrite(t *testing.T) {
+	n := &notice.Notice{
+		CountryCode: "DEU",
+		CityName:    "Berlin",
+		PostalCode:  "10115",
+		RegionCode:  "DE300",
+		BuyerOrganization: &notice.Organization{
+			Address: notice.Address{
+				CountryCode:          "POL",
+				CityName:             "Warsaw",
+				PostalZone:           "00-001",
+				CountrySubentityCode: "PL14",
+			},
+		},
+	}
+	backfillNoticeLocationFromBuyer(n)
+
+	if n.CountryCode != "DEU" {
+		t.Fatalf("expected country DEU, got %q", n.CountryCode)
+	}
+	if n.CityName != "Berlin" {
+		t.Fatalf("expected city Berlin, got %q", n.CityName)
+	}
+	if n.PostalCode != "10115" {
+		t.Fatalf("expected postal 10115, got %q", n.PostalCode)
+	}
+	if n.RegionCode != "DE300" {
+		t.Fatalf("expected region DE300, got %q", n.RegionCode)
+	}
+}