[text-box-trim-valid.html]
  [e.style['text-box-trim'\] = "none" should set the property value]
    expected: FAIL

  [e.style['text-box-trim'\] = "trim-start" should set the property value]
    expected: FAIL

  [e.style['text-box-trim'\] = "trim-end" should set the property value]
    expected: FAIL

  [e.style['text-box-trim'\] = "trim-both" should set the property value]
    expected: FAIL