fix

apps/api/internal/processing/category_test.go

@@ -470,3 +470,82 @@ func TestBackfillProcessedCategoriesFromMapped(t *testing.T) {
 		t.Fatalf("coverage with=%d without=%d", withCat, withoutCat)
 	}
 }
+
+func TestBackfillMappedCategoriesFromProcessed(t *testing.T) {
+	dsn := os.Getenv("DATABASE_URL")
+	if dsn == "" {
+		t.Skip("DATABASE_URL not set")
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+
+	pg, err := pgxpool.New(ctx, dsn)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer pg.Close()
+
+	companyID := uuid.New()
+	rawID := uuid.New()
+	ppID := uuid.New()
+	gtin := "map-bf-" + companyID.String()[:8]
+
+	if _, err := pg.Exec(ctx, `INSERT INTO companies (id, name) VALUES ($1, $2)`, companyID, "mapped-backfill-test"); err != nil {
+		t.Fatal(err)
+	}
+	defer func() {
+		_, _ = pg.Exec(context.Background(), `DELETE FROM processed_products WHERE company_id = $1`, companyID)
+		_, _ = pg.Exec(context.Background(), `DELETE FROM raw_products WHERE company_id = $1`, companyID)
+		_, _ = pg.Exec(context.Background(), `DELETE FROM companies WHERE id = $1`, companyID)
+	}()
+
+	if _, err := pg.Exec(ctx, `
+		INSERT INTO raw_products (id, company_id, gtin, raw_data, mapped_data, is_processed, processing_status)
+		VALUES ($1, $2, $3, '{}'::jsonb, '{"name":"Widget"}'::jsonb, true, 'processed')`,
+		rawID, companyID, gtin); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := pg.Exec(ctx, `
+		INSERT INTO processed_products (
+			id, company_id, product_id, name, category, description, processed_name, processed_description,
+			raw_product_id, status, attributes, processed_attributes, field_sources
+		) VALUES (
+			$1, $2, $3, 'Widget', '42', 'x', 'Widget', 'x',
+			$4, 'needs_review', '{}'::jsonb, '{}'::jsonb, '{}'::jsonb
+		)`, ppID, companyID, gtin, rawID); err != nil {
+		t.Fatal(err)
+	}
+
+	n, err := BackfillMappedCategoriesFromProcessed(ctx, pg, companyID)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if n != 1 {
+		t.Fatalf("updated=%d want 1", n)
+	}
+	var mappedCat string
+	if err := pg.QueryRow(ctx, `
+		SELECT COALESCE(mapped_data->>'category', '') FROM raw_products WHERE id = $1`, rawID).Scan(&mappedCat); err != nil {
+		t.Fatal(err)
+	}
+	if mappedCat != "42" {
+		t.Fatalf("mapped category=%q want 42", mappedCat)
+	}
+
+	n2, err := BackfillMappedCategoriesFromProcessed(ctx, pg, companyID)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if n2 != 0 {
+		t.Fatalf("second backfill updated=%d want 0", n2)
+	}
+
+	withCat, withoutCat, taxonomy, err := CountMappedCategoryCoverage(ctx, pg, companyID)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if withCat != 1 || withoutCat != 0 || taxonomy != 0 {
+		t.Fatalf("mapped coverage with=%d without=%d taxonomy=%d", withCat, withoutCat, taxonomy)
+	}
+}