wip: Strict deserialization returns error on any unknown xml field or attribute

yaserde/tests/deserializer.rs

@@ -1117,3 +1117,20 @@ fn de_nested_macro_rules() {
 
   float_attrs!(f32);
 }
+
+#[test]
+fn de_strict() {
+  init();
+
+  #[derive(PartialEq, Debug, YaDeserialize)]
+  pub struct Struct {
+    id: i32,
+  }
+  let xml_content = r#"<?xml version="1.0" encoding="utf-8"?>
+      <Struct>
+          <id>123</id>
+          <NonExistentAttrShouldCrash></NonExistentAttrShouldCrash>
+        </Struct>"#;
+  let load: Result<Struct, String> = from_str(xml_content);
+  assert!(load.is_err());
+}

yaserde_derive/src/de/expand_struct.rs

@@ -431,6 +431,9 @@ pub fn parse(
                 match (namespace.as_str(), name.local_name.as_str()) {
                   #call_visitors
                   _ => {
+                    ::yaserde::__derive_trace!("SKIPPINGSKIPPING  Skipping element {:?}", name.local_name);
+                    return Err(format!("Found unauthorized element {}", name.local_name));
+
                     let event = reader.next_event()?;
                     #write_unused