[comp_label.html]
  [aria-label undefined on img w/ alt]
    expected: FAIL

  [aria-label undefined on img w/o alt]
    expected: FAIL

  [aria-label undefined on img w/ empty alt]
    expected: FAIL

  [aria-label undefined on img w/o alt but w/ title]
    expected: FAIL

  [aria-label undefined on img w/ empty alt but w/ title]
    expected: FAIL

  [button's hidden referenced name (visibility:hidden) with hidden aria-labelledby traversal falls back to aria-label]
    expected: FAIL

  [Hidden button's label should be the empty string]
    expected: FAIL