[calc-background-position-002.html]
  [testing background-position: calc(18px - 7px) calc(19px - 7px)]
    expected: FAIL

  [testing background-position: calc(2px + 3px) calc(4px + 5px)]
    expected: FAIL

  [testing background-position: calc(6px + 21%) calc(7em + 22%)]
    expected: FAIL

  [testing background-position: calc(100px / 4) calc(119px / 7)]
    expected: FAIL

  [testing background-position: calc(-8px + 23%) calc(-9em + 24%)]
    expected: FAIL

  [testing background-position: calc(4 * 5px) calc(6px * 4)]
    expected: FAIL