'The behavior when the underlying C{sendmsg} call fails is the same
whether L{sendmsg} is passed ancillary data or not.'

def test_syscallErrorWithControlMessage(self):

    self.input.close()
    exc = self.assertRaises(error, sendmsg, self.input, 'hello,    world', [(0, 0, '0123')], 0)
    self.assertEqual(exc.args[0], errno.EBADF)
