# Copyright (C) 2016 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
#
# This file is part of Kitty.
#
# Kitty is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# Kitty is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Kitty. If not, see <http://www.gnu.org/licenses/>.
'''
This module provides various assertion functions used by kitty,
not that important, but makes the life easier.
Useful for making assertions that throw :class:`~kitty.core.KittyException`
'''
from kitty.core import KittyException
import types
[docs]def is_of_types(obj, the_types):
'''
:param obj: object to assert
:param the_types: iterable of types, or a signle type
:raise: an exception if obj is not an instance of types
'''
if not isinstance(obj, the_types):
raise KittyException('object type (%s) is not one of (%s)' % (type(obj), the_types))
[docs]def is_int(obj):
'''
:param obj: object to assert
:raise: an exception if obj is not an int type
'''
is_of_types(obj, types.IntType)
[docs]def is_in(obj, it):
'''
:param obj: object to assert
:param it: iterable of elements we assert obj is in
:raise: an exception if obj is in an iterable
'''
if obj not in it:
raise KittyException('(%s) is not in %s' % (obj, it))
[docs]def not_none(obj):
'''
:param obj: object to assert
:raise: an exception if obj is not None
'''
if obj is None:
raise KittyException('object is None')