more fancy features

pkg/inventory/redis_reservation_service_test.go

@@ -49,8 +49,8 @@ func TestReserveAndRelease(t *testing.T) {
 
 	// Reserve
 	req := CartReserveRequest{
-		InventoryReference: &InventoryReference{Sku: sku, LocationID: locationID},
-		CartId:             cartID,
+		InventoryReference: &InventoryReference{SKU: sku, LocationID: locationID},
+		CartID:             cartID,
 		Quantity:           2,
 		TTL:                5 * time.Minute,
 	}
@@ -132,8 +132,8 @@ func TestConcurrentReserves(t *testing.T) {
 		go func(cartNum int) {
 			defer wg.Done()
 			req := CartReserveRequest{
-				InventoryReference: &InventoryReference{Sku: sku, LocationID: locationID},
-				CartId:             CartID(fmt.Sprintf("cart%d", cartNum)),
+				InventoryReference: &InventoryReference{SKU: sku, LocationID: locationID},
+				CartID:             CartID(fmt.Sprintf("cart%d", cartNum)),
 				Quantity:           1,
 				TTL:                5 * time.Minute,
 			}
@@ -195,8 +195,8 @@ func TestExpiry(t *testing.T) {
 
 	// Reserve with short TTL
 	req := CartReserveRequest{
-		InventoryReference: &InventoryReference{Sku: sku, LocationID: locationID},
-		CartId:             cartID,
+		InventoryReference: &InventoryReference{SKU: sku, LocationID: locationID},
+		CartID:             cartID,
 		Quantity:           2,
 		TTL:                10 * time.Second,
 	}
@@ -239,3 +239,73 @@ func TestExpiry(t *testing.T) {
 		t.Errorf("expected available 8, got %d", available)
 	}
 }
+
+func TestGetReservationSummary(t *testing.T) {
+	client, mr, err := setupTestRedis()
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer mr.Close()
+
+	service, err := NewRedisCartReservationService(client)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	ctx := context.Background()
+	sku := SKU("test-item")
+	locationID := LocationID("warehouse1")
+
+	// Set initial inventory
+	err = client.Set(ctx, getInventoryKey(sku, locationID), 10, 0).Err()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// Reserve two carts
+	req1 := CartReserveRequest{
+		InventoryReference: &InventoryReference{SKU: sku, LocationID: locationID},
+		CartID:             "cart1",
+		Quantity:           2,
+		TTL:                5 * time.Minute,
+	}
+	err = service.ReserveForCart(ctx, req1)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	req2 := CartReserveRequest{
+		InventoryReference: &InventoryReference{SKU: sku, LocationID: locationID},
+		CartID:             "cart2",
+		Quantity:           1,
+		TTL:                10 * time.Minute,
+	}
+	err = service.ReserveForCart(ctx, req2)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// Get summary
+	summary, err := service.GetReservationSummary(ctx, sku, locationID)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if summary.ReservationCount != 2 {
+		t.Errorf("expected 2 reservations, got %d", summary.ReservationCount)
+	}
+
+	if summary.RemainingItems != 7 {
+		t.Errorf("expected remaining 7, got %d", summary.RemainingItems)
+	}
+
+	if summary.EarliestRelease.IsZero() {
+		t.Error("expected earliest release time")
+	}
+
+	// Earliest should be cart1's expiry (5 min)
+	expectedEarliest := time.Now().Add(5 * time.Minute)
+	if summary.EarliestRelease.After(expectedEarliest.Add(1*time.Second)) || summary.EarliestRelease.Before(expectedEarliest.Add(-1*time.Second)) {
+		t.Errorf("earliest release time incorrect: %v", summary.EarliestRelease)
+	}
+}