 ".substringData() with very large count")

  test(function() {
    var node = create()
    assert_equals(node.data, "test")

    assert_equals(node.substringData(0, -1), "test")
    assert_equals(node.substringData(0, -0x100000000 + 2), "te")
  }, type + ".substringData() with negative count")

  test(function() {
    var node = create()
    assert_equals(node.data, "test")

    node.data = "This is the character data test, other è³‡æ–™ï¼Œæ›´å¤šæ–‡å­—"

    assert_equals(node.su