more

pkg/voucher/service.go

@@ -1,6 +1,9 @@
 package voucher
 
-import "math"
+import (
+	"errors"
+	"math"
+)
 
 type Rule struct {
 	Type  string `json:"type"`
@@ -20,8 +23,13 @@ type Service struct {
 
 }
 
+var ErrInvalidCode = errors.New("invalid vouchercode")
+
 func (s *Service) GetVoucher(code string) (*Voucher, error) {
 	value := int64(math.Round(100 * math.Pow(10, 2)))
+	if code == "" {
+		return nil, ErrInvalidCode
+	}
 	return &Voucher{
 		Code:     code,
 		Value:    value,