[idlharness.window.html]
  [idl_test setup]
    expected: FAIL

  [idl_test validation]
    expected: FAIL

  [Partial interface CustomElementRegistry: member names are unique]
    expected: FAIL

  [Partial interface HTMLTemplateElement: member names are unique]
    expected: FAIL

  [Partial interface Element: member names are unique]
    expected: FAIL

  [Partial dictionary ShadowRootInit: member names are unique]
    expected: FAIL

  [Partial dictionary ElementCreationOptions: member names are unique]
    expected: FAIL

  [Document includes DocumentOrShadowRoot: member names are unique]
    expected: FAIL

  [ShadowRoot includes DocumentOrShadowRoot: member names are unique]
    expected: FAIL

  [HTMLTemplateElement interface: attribute shadowRootCustomElementRegistry]
    expected: FAIL

  [CustomElementRegistry interface: operation initialize(Node)]
    expected: FAIL

  [Document interface: attribute customElementRegistry]
    expected: FAIL

  [ShadowRoot interface: attribute customElementRegistry]
    expected: FAIL

  [Element interface: attribute customElementRegistry]
    expected: FAIL