[append-on-Document.html]
  type: testharness
  [Document.append() without any argument, on a Document having no child.]
    expected: FAIL

  [Document.append() with only one element as an argument, on a Document having no child.]
    expected: FAIL

  [Document.append() with only one element as an argument, on a Document having one child.]
    expected: FAIL

  [Document.append() with text as an argument, on a Document having no child.]
    expected: FAIL

  [Document.append() with two elements as the argument, on a Document having no child.]
    expected: FAIL

