adding ok check to prevent panics

lazy.go

@@ -20,6 +20,7 @@ const (
 var (
 	ErrBadExample  = errors.New("example field must be a non-nil struct")
 	ErrMissingKeys = errors.New("there must be a key for each row requested with RowCount")
+	ErrTypeCast    = errors.New("unable to type cast the mock structs")
 	//contains placeholder to inject type on runtime
 	ErrUnsupportedType = errors.New("type: %s is not yet supported")
 )
@@ -42,7 +43,7 @@ type Config struct {
 type StructMock struct {
 	Query       string
 	Args        []driver.Value
-	MockStructs any
+	MockStructs []any
 	Result      driver.Result
 }
 
@@ -156,10 +157,15 @@ func RandomStruct(c Config) (*StructMock, error) {
 		}
 	}
 
+	ms, ok := reflect.ValueOf(filled).Interface().([]any)
+	if !ok {
+		return nil, ErrTypeCast
+	}
+
 	return &StructMock{
 		Query:       sqlx.Rebind(sqlx.AT, regexp.QuoteMeta(c.Query)),
 		Args:        args,
-		MockStructs: reflect.ValueOf(filled).Interface(),
+		MockStructs: ms,
 		Result: &sqlResult{
 			rowsAffected: int64(c.RowCount),
 			err:          nil,