[timeline-scope-parsing.tentative.html]
  [e.style['timeline-scope'\] = "initial" should set the property value]
    expected: FAIL

  [e.style['timeline-scope'\] = "inherit" should set the property value]
    expected: FAIL

  [e.style['timeline-scope'\] = "unset" should set the property value]
    expected: FAIL

  [e.style['timeline-scope'\] = "revert" should set the property value]
    expected: FAIL

  [e.style['timeline-scope'\] = "none" should set the property value]
    expected: FAIL

  [e.style['timeline-scope'\] = "--aBc" should set the property value]
    expected: FAIL

  [e.style['timeline-scope'\] = "--foo, --bar" should set the property value]
    expected: FAIL

  [e.style['timeline-scope'\] = "--abc" should set the property value]
    expected: FAIL

  [e.style['timeline-scope'\] = "--bar, --foo" should set the property value]
    expected: FAIL

  [e.style['timeline-scope'\] = "  --abc" should set the property value]
    expected: FAIL

  [e.style['timeline-scope'\] = "--auto" should set the property value]
    expected: FAIL