'If a range is unsatisfiable due to the start not being less than the
length of the resource, the response is 416 (Requested range not
satisfiable) and no data is written to the response body (RFC 2616,
section 14.35.1).'

def test_invalidStartBytePos(self):

    self.request.requestHeaders.addRawHeader('range', 'bytes=67-108')
    self.resource.render(self.request)
    self.assertEqual(self.request.responseCode, http.REQUESTED_RANGE_NOT_SATISFIABLE)
    self.assertEqual(''.join(self.request.written), '')
    self.assertEqual(self.request.responseHeaders.getRawHeaders('content-length')[0], '0')
    self.assertEqual(self.request.responseHeaders.getRawHeaders('content-range')[0], networkString(('bytes    */%d' % (len(self.payload),))))
