Some initial work on xml parsing

crates/xml/tests/de_enum.rs

@@ -0,0 +1,45 @@
+use rustical_xml::XmlRoot;
+use xml_derive::XmlDeserialize;
+
+#[test]
+fn test_struct_untagged_enum() {
+    #[derive(Debug, XmlDeserialize, PartialEq)]
+    struct Propfind {
+        prop: Prop,
+    }
+
+    #[derive(Debug, XmlDeserialize, PartialEq)]
+    struct Prop {
+        #[xml(untagged)]
+        prop: PropEnum,
+    }
+
+    #[derive(Debug, XmlDeserialize, PartialEq)]
+    enum PropEnum {
+        A,
+        B,
+    }
+
+    impl XmlRoot for Propfind {
+        fn root_tag() -> &'static [u8] {
+            b"propfind"
+        }
+    }
+
+    let doc = Propfind::parse_str(
+        r#"
+        <propfind>
+            <prop>
+                <A/>
+            </prop>
+        </propfind>
+    "#,
+    )
+    .unwrap();
+    assert_eq!(
+        doc,
+        Propfind {
+            prop: Prop { prop: PropEnum::A }
+        }
+    );
+}