'Make sure that if the C{--auth} command-line option is not passed,
the default checkers are (for backwards compatibility): SSH and UNIX'

def test_defaultAuths(self):

    numCheckers = 2
    self.assertIn(ISSHPrivateKey, self.options['credInterfaces'], 'SSH    should    be    one    of    the    default    checkers')
    self.assertIn(IUsernamePassword, self.options['credInterfaces'], 'UNIX    should    be    one    of    the    default    checkers')
    self.assertEqual(numCheckers, len(self.options['credCheckers']), ('There    should    be    %d    checkers    by    default' % (numCheckers,)))
