pricing

services/productVisibility_test.go

@@ -715,3 +715,55 @@ func TestFilteringChildrenDoesNotDisturbTheCallersSlice(t *testing.T) {
 		t.Errorf("the caller's slice was modified")
 	}
 }
+
+/*
+A product with no price is unfinished, not free.
+
+Import writes whatever the catalogue carries, and 159 of the 1,572 catalogue
+rows carry no price — loose produce has none by design, some scraped rows never
+had one. So a product can reach a shelf at ₹0 and go on sale at nothing.
+
+Measured 2026-09-03: Kmart's entire customer-facing catalogue was five products,
+every one at ₹0, all with stock.
+*/
+
+func TestAnUnpricedProductIsNotOfferedToShoppers(t *testing.T) {
+	groups := []models.Tenantproducts{{Products: []models.Products{
+		{Productid: 1, Price: 45},
+		{Productid: 2, Price: 0},
+		{Productid: 3, Price: 12.5},
+	}}}
+	got := PricedOnly(groups)
+	if len(got[0].Products) != 2 {
+		t.Fatalf("expected the two priced products, got %v", got[0].Products)
+	}
+	for _, product := range got[0].Products {
+		if product.Price <= 0 {
+			t.Errorf("product %d has no price and was still offered", product.Productid)
+		}
+	}
+}
+
+func TestANegativePriceIsNotAPrice(t *testing.T) {
+	got := PricedOnly([]models.Tenantproducts{{Products: []models.Products{{Productid: 1, Price: -5}}}})
+	if len(got[0].Products) != 0 {
+		t.Error("a negative price was treated as sellable")
+	}
+}
+
+func TestAShopWithNothingPricedStillExists(t *testing.T) {
+	// The shop is open; it has nothing ready to sell. Dropping the group would
+	// say the shop is not there, which is a different and wrong statement.
+	got := PricedOnly([]models.Tenantproducts{{Products: []models.Products{{Productid: 1, Price: 0}}}})
+	if len(got) != 1 || len(got[0].Products) != 0 {
+		t.Errorf("expected the shop to survive with nothing on offer, got %v", got)
+	}
+}
+
+func TestPricingFilterDoesNotDisturbTheCallersSlice(t *testing.T) {
+	original := []models.Tenantproducts{{Products: []models.Products{{Productid: 1, Price: 10}, {Productid: 2, Price: 0}}}}
+	_ = PricedOnly(original)
+	if len(original[0].Products) != 2 {
+		t.Error("the caller's slice was modified")
+	}
+}