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
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
# -*- coding: utf-8 -*-
# Copyright (c) 2010 Mark Sandstrom
# Copyright (c) 2011-2013 Raphaël Barrois
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
import datetime
from .compat import mock
class MultiModulePatcher(object):
"""An abstract context processor for patching multiple modules."""
replaced_symbol = None
replaced_symbol_module = None
module_imported_as = ''
def __init__(self, *target_modules, **kwargs):
super(MultiModulePatcher, self).__init__(**kwargs)
if not self.module_imported_as:
self.module_imported_as = replaced_symbol.__module__.__name__
self.patchers = [self._build_patcher(mod) for mod in target_modules]
def _check_module(self, target_module):
if not self.replaced_symbol_module:
# No check to perform
return
replaced_import = getattr(target_module, self.module_imported_as)
assert replaced_import is self.replaced_symbol_module, (
"Cannot patch import %s.%s (%r != %r)" % (
target_module.__name__, self.module_imported_as,
replaced_import, self.replaced_symbol_module))
def _build_patcher(self, target_module):
"""Build a mock patcher for the target module."""
self._check_module(target_module)
return mock.patch.object(
getattr(target_module, self.module_imported_as),
self.replaced_symbol.__name__,
mock.Mock(wraps=self.replaced_symbol),
)
def setup_mocked_symbol(self, mocked_symbol):
"""Setup a mocked symbol for later use."""
pass
def __enter__(self):
for patcher in self.patchers:
mocked_symbol = patcher.start()
self.setup_mocked_symbol(mocked_symbol)
def __exit__(self, exc_type=None, exc_val=None, exc_tb=None):
for patcher in self.patchers:
patcher.stop()
class mocked_date_today(MultiModulePatcher):
"""A context processor changing the value of date.today()."""
replaced_symbol = datetime.date
replaced_symbol_module = datetime
module_imported_as = 'datetime'
def __init__(self, target_date, *target_modules, **kwargs):
self.target_date = target_date
super(mocked_date_today, self).__init__(*target_modules, **kwargs)
def setup_mocked_symbol(self, mocked_date):
mocked_date.today.return_value = self.target_date
class mocked_datetime_now(MultiModulePatcher):
replaced_symbol = datetime.datetime
replaced_symbol_module = datetime
module_imported_as = 'datetime'
def __init__(self, target_dt, *target_modules, **kwargs):
self.target_dt = target_dt
super(mocked_datetime_now, self).__init__(*target_modules, **kwargs)
def setup_mocked_symbol(self, mocked_datetime):
mocked_datetime.now.return_value = self.target_dt
|