Harden pricelist formation and document architecture decisions

internal/services/pricing/service_meta_test.go

@@ -0,0 +1,33 @@
+package pricing
+
+import "testing"
+
+func TestExpandMetaPricesWithCache_IncludesBaseLotAndDeduplicates(t *testing.T) {
+	allLots := []string{
+		"SSD_NVMe_03.2T",
+		"SSD_NVMe_03.2T_OEM",
+		"SSD_NVMe_03.2T_ES",
+	}
+
+	got := expandMetaPricesWithCache(
+		"SSD_NVMe_03.2T,SSD_NVMe_03.2T*,SSD_NVMe_03.2T_OEM",
+		"SSD_NVMe_03.2T",
+		allLots,
+	)
+
+	want := []string{
+		"SSD_NVMe_03.2T",
+		"SSD_NVMe_03.2T_OEM",
+		"SSD_NVMe_03.2T_ES",
+	}
+
+	if len(got) != len(want) {
+		t.Fatalf("unexpected result length: got=%d want=%d; values=%v", len(got), len(want), got)
+	}
+	for i := range want {
+		if got[i] != want[i] {
+			t.Fatalf("unexpected value at %d: got=%q want=%q; full=%v", i, got[i], want[i], got)
+		}
+	}
+}
+