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
|
# Copyright 2011 Justin Santa Barbara
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import functools
from nova import safe_utils
from nova import test
def get_closure():
x = 1
def wrapper(self, instance, red=None, blue=None):
return x
return wrapper
class WrappedCodeTestCase(test.NoDBTestCase):
"""Test the get_wrapped_function utility method."""
def _wrapper(self, function):
@functools.wraps(function)
def decorated_function(self, *args, **kwargs):
function(self, *args, **kwargs)
return decorated_function
def test_single_wrapped(self):
@self._wrapper
def wrapped(self, instance, red=None, blue=None):
pass
func = safe_utils.get_wrapped_function(wrapped)
func_code = func.__code__
self.assertEqual(4, len(func_code.co_varnames))
self.assertIn('self', func_code.co_varnames)
self.assertIn('instance', func_code.co_varnames)
self.assertIn('red', func_code.co_varnames)
self.assertIn('blue', func_code.co_varnames)
def test_double_wrapped(self):
@self._wrapper
@self._wrapper
def wrapped(self, instance, red=None, blue=None):
pass
func = safe_utils.get_wrapped_function(wrapped)
func_code = func.__code__
self.assertEqual(4, len(func_code.co_varnames))
self.assertIn('self', func_code.co_varnames)
self.assertIn('instance', func_code.co_varnames)
self.assertIn('red', func_code.co_varnames)
self.assertIn('blue', func_code.co_varnames)
def test_triple_wrapped(self):
@self._wrapper
@self._wrapper
@self._wrapper
def wrapped(self, instance, red=None, blue=None):
pass
func = safe_utils.get_wrapped_function(wrapped)
func_code = func.__code__
self.assertEqual(4, len(func_code.co_varnames))
self.assertIn('self', func_code.co_varnames)
self.assertIn('instance', func_code.co_varnames)
self.assertIn('red', func_code.co_varnames)
self.assertIn('blue', func_code.co_varnames)
def test_closure(self):
closure = get_closure()
func = safe_utils.get_wrapped_function(closure)
func_code = func.__code__
self.assertEqual(4, len(func_code.co_varnames))
self.assertIn('self', func_code.co_varnames)
self.assertIn('instance', func_code.co_varnames)
self.assertIn('red', func_code.co_varnames)
self.assertIn('blue', func_code.co_varnames)
|
