rustical_xml: Add new trait EnumVariants

crates/xml/tests/enum_variants.rs

@@ -0,0 +1,36 @@
+use quick_xml::name::Namespace;
+use rustical_xml::EnumVariants;
+
+pub const NS_DAV: Namespace = Namespace(b"DAV:");
+pub const NS_DAVPUSH: Namespace = Namespace(b"https://bitfire.at/webdav-push");
+pub const NS_CALDAV: Namespace = Namespace(b"urn:ietf:params:xml:ns:caldav");
+pub const NS_CARDDAV: Namespace = Namespace(b"urn:ietf:params:xml:ns:carddav");
+pub const NS_ICAL: Namespace = Namespace(b"http://apple.com/ns/ical/");
+pub const NS_CALENDARSERVER: Namespace = Namespace(b"http://calendarserver.org/ns/");
+pub const NS_NEXTCLOUD: Namespace = Namespace(b"http://nextcloud.com/ns");
+
+#[derive(EnumVariants)]
+pub enum CalendarProp {
+    // WebDAV (RFC 2518)
+    #[xml(ns = "NS_DAV")]
+    Displayname(Option<String>),
+    #[xml(ns = "NS_DAV")]
+    Getcontenttype(&'static str),
+
+    #[xml(ns = "NS_DAV", rename = b"principal-URL")]
+    PrincipalUrl,
+    Topic,
+}
+
+#[test]
+fn test_enum_variants() {
+    assert_eq!(
+        CalendarProp::TAGGED_VARIANTS,
+        &[
+            (Some(NS_DAV), "displayname"),
+            (Some(NS_DAV), "getcontenttype"),
+            (Some(NS_DAV), "principal-URL"),
+            (None, "topic"),
+        ]
+    );
+}