Harness status: OK Found 27 tests 25 Pass 2 Fail Pass aria-activedescendant element reflection Pass If the content attribute is set directly, the IDL attribute getter always returns the first element whose ID matches the content attribute. Pass Setting the IDL attribute to an element which is not the first element in DOM order with its ID causes the content attribute to be an empty string Pass Setting an element reference that crosses into a shadow tree is disallowed, but setting one that is in a shadow inclusive ancestor is allowed. Pass aria-errormessage Pass ariaErrorMessageElement is not defined Pass aria-details Pass Deleting a reflected element should return null for the IDL attribute and the content attribute will be empty. Pass Changing the ID of an element doesn't lose the reference. Pass Reparenting an element into a descendant shadow scope hides the element reference. Pass Reparenting referenced element cannot cause retargeting of reference. Pass Element reference set in invalid scope remains intact throughout move to valid scope. Pass aria-labelledby. Pass aria-controls. Pass aria-describedby. Pass aria-flowto. Pass aria-owns. Fail shadow DOM behaviour for FrozenArray element reflection. Fail Moving explicitly set elements across shadow DOM boundaries. Pass Moving explicitly set elements around within the same scope, and removing from the DOM. Pass Reparenting. Pass Attaching element reference before it's inserted into the DOM. Pass Cross-document references and moves. Pass Adopting element keeps references. Pass Caching invariant different attributes. Pass Caching invariant different elements. Pass Passing values of the wrong type should throw a TypeError