'_find_share should throw error if there is no mounted shares.'

def test_find_share_should_throw_error_if_there_is_no_mounted_share(self):

    self._set_driver()
    drv = self._driver
    drv._mounted_shares = []
    self.assertRaises(exception.NfsNoSharesMounted, drv._find_share, self._simple_volume())
