bump test coverage to 87.2%

value.go

@@ -88,7 +88,7 @@ func parseSlice[T any, S ~string](s S, f func(string) (T, error)) ([]T, error) {
 	for _, str := range split {
 		v, err := parseValue(str, f)
 		if err != nil {
-			return list, err
+			return nil, err
 		}
 
 		list = append(list, v)
@@ -109,7 +109,7 @@ func parseValue[T any, S ~string](s S, f func(string) (T, error)) (T, error) {
 func tidySplit[S ~string](s S, sep string) []string {
 	splitted := strings.Split(string(s), sep)
 	for i, str := range splitted {
-		splitted[i] = strings.TrimSpace(str)
+		splitted[i] = trim(str)
 	}
 	return splitted
 }