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

  [Element.append() with null as an argument, on a parent having no child.]
    expected: FAIL

  [Element.append() with undefined as an argument, on a parent having no child.]
    expected: FAIL

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

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

  [Element.append() with null as an argument, on a parent having a child.]
    expected: FAIL

  [Element.append() with one element and text as argument, on a parent having a child.]
    expected: FAIL

  [DocumentFrgment.append() without any argument, on a parent having no child.]
    expected: FAIL

  [DocumentFrgment.append() with null as an argument, on a parent having no child.]
    expected: FAIL

  [DocumentFrgment.append() with undefined as an argument, on a parent having no child.]
    expected: FAIL

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

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

  [DocumentFrgment.append() with null as an argument, on a parent having a child.]
    expected: FAIL

  [DocumentFrgment.append() with one element and text as argument, on a parent having a child.]
    expected: FAIL

