[calc-sibling-function-parsing.html]
  [e.style['left'\] = "calc(1px * sibling-index())" should set the property value]
    expected: FAIL

  [e.style['left'\] = "calc(1px * sibling-index( ))" should set the property value]
    expected: FAIL

  [e.style['z-index'\] = "sibling-index()" should set the property value]
    expected: FAIL

  [e.style['left'\] = "calc(1px * sibling-count())" should set the property value]
    expected: FAIL

  [e.style['left'\] = "calc(1px * sibling-count( ))" should set the property value]
    expected: FAIL

  [e.style['z-index'\] = "sibling-count()" should set the property value]
    expected: FAIL