update

pkg/promotions/eval.go

@@ -26,7 +26,7 @@ func (NoopTracer) Trace(string, map[string]any) {}
 // for the purpose of promotion condition evaluation.
 type PromotionItem struct {
 	SKU         string
-	Quantity    int
+	Quantity    uint16
 	Category    string
 	PriceIncVat int64
 }
@@ -36,7 +36,7 @@ type PromotionItem struct {
 // customer/order metadata.
 type PromotionEvalContext struct {
 	CartTotalIncVat       int64
-	TotalItemQuantity     int
+	TotalItemQuantity     uint32
 	Items                 []PromotionItem
 	CustomerSegment       string
 	CustomerLifetimeValue float64
@@ -89,7 +89,7 @@ func NewContextFromCart(g *cart.CartGrain, opts ...ContextOption) *PromotionEval
 			Category:    strings.ToLower(category),
 			PriceIncVat: it.Price.IncVat,
 		})
-		ctx.TotalItemQuantity += it.Quantity
+		ctx.TotalItemQuantity += uint32(it.Quantity)
 	}
 	for _, o := range opts {
 		o(ctx)

pkg/promotions/eval_test.go

@@ -58,7 +58,7 @@ func (t *testTracer) Count(name string) int {
 func makeCart(totalOverride int64, items []struct {
 	sku      string
 	category string
-	qty      int
+	qty      uint16
 	priceInc int64
 }) *cart.CartGrain {
 	g := cart.NewCartGrain(1, time.Now())
@@ -92,7 +92,7 @@ func TestEvaluateRuleBasicAND(t *testing.T) {
 	g := makeCart(12000, []struct {
 		sku      string
 		category string
-		qty      int
+		qty      uint16
 		priceInc int64
 	}{
 		{"SKU-1", "summer", 2, 3000},
@@ -226,7 +226,7 @@ func TestEvaluateProductCategoryIN(t *testing.T) {
 	g := makeCart(-1, []struct {
 		sku      string
 		category string
-		qty      int
+		qty      uint16
 		priceInc int64
 	}{
 		{"A", "shoes", 1, 5000},
@@ -268,7 +268,7 @@ func TestEvaluateGroupOR(t *testing.T) {
 	g := makeCart(3000, []struct {
 		sku      string
 		category string
-		qty      int
+		qty      uint16
 		priceInc int64
 	}{
 		{"ONE", "x", 1, 3000},