Harness status: OK Found 12 tests 12 Pass Pass idl_test setup Pass idl_test validation Pass Partial interface Element: original interface defined Pass Partial interface Element: member names are unique Pass Element includes ParentNode: member names are unique Pass Element includes NonDocumentTypeChildNode: member names are unique Pass Element includes ChildNode: member names are unique Pass Element includes Slottable: member names are unique Pass Element interface: attribute part Pass Element interface: element must inherit property "part" with the proper type Pass Element interface: htmlElement must inherit property "part" with the proper type Pass Element interface: svgElement must inherit property "part" with the proper type