wip: adjust memoization

packages/core/tests/diffing.rs

@@ -15,7 +15,7 @@ mod test_logging;
 fn new_dom() -> VirtualDom {
     const IS_LOGGING_ENABLED: bool = false;
     test_logging::set_up_logging(IS_LOGGING_ENABLED);
-    VirtualDom::new(|cx| todo!())
+    VirtualDom::new(|cx| rsx!(cx, "hi"))
 }
 
 use DomEdit::*;