feat: some more tests

parser/utils/set_path_value.go

@@ -12,6 +12,11 @@ import (
 //   - when obj is a map  -> if value is a map[string]any, merge into obj; otherwise obj is unchanged.
 //   - otherwise          -> returns obj unchanged.
 func SetPathValue(path string, value any, obj any) any {
+	// check if value is empty string and if so continue
+	if value == "" || value == nil {
+		return obj
+	}
+
 	// Split and drop empty segments (so ".", "..", "" become no keys)
 	raw := strings.Split(path, ".")
 	keys := raw[:0]