/usr/lib/python2.7/dist-packages/preggy/assertions/types/nullable.py is in python-preggy 1.1.3-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 | # -*- coding: utf-8 -*-
'''preggy "null" (None) assertions. For use with `expect()` (see `preggy.core`).
'''
# preggy assertions
# https://github.com/heynemann/preggy
# Licensed under the MIT license:
# http://www.opensource.org/licenses/mit-license
# Copyright (c) 2013 Bernardo Heynemann heynemann@gmail.com
from __future__ import absolute_import
from preggy import assertion
@assertion
def to_be_null(topic):
'''Asserts that `topic` is `None`.'''
if topic is not None:
msg = 'Expected topic({0}) to be None'.format(topic)
raise AssertionError(msg)
@assertion
def not_to_be_null(topic):
'''Asserts that `topic` is NOT `None`.'''
if topic is None:
msg = 'Expected topic({0}) not to be None'.format(topic)
raise AssertionError(msg)
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