[selection-direction.tentative.html]
  [direction returns "none" when there is no selection]
    expected: FAIL

  [direction returns "forward" when there is a forward-direction selection in the document tree]
    expected: FAIL

  [direction returns "backward" when there is a backward-direction selection in the document tree]
    expected: FAIL

  [direction returns "forward" when there is a forward selection in the shadow tree]
    expected: FAIL

  [direction returns "backward" when there is a backward selection in the shadow tree]
    expected: FAIL

  [direction returns "forward" when there is a forward selection that crosses shadow boundaries]
    expected: FAIL

  [direction returns "backward" when there is a forward selection that crosses shadow boundaries]
    expected: FAIL