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
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
|
#
# Copyright (c) 2001 - 2014 The SCons Foundation
#
# 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.
#
__revision__ = "src/engine/SCons/MemoizeTests.py 2014/09/27 12:51:43 garyo"
import sys
import unittest
import TestUnit
import SCons.Memoize
class FakeObject(object):
__metaclass__ = SCons.Memoize.Memoized_Metaclass
memoizer_counters = []
def __init__(self):
self._memo = {}
def _dict_key(self, argument):
return argument
memoizer_counters.append(SCons.Memoize.CountDict('dict', _dict_key))
def dict(self, argument):
memo_key = argument
try:
memo_dict = self._memo['dict']
except KeyError:
memo_dict = {}
self._memo['dict'] = memo_dict
else:
try:
return memo_dict[memo_key]
except KeyError:
pass
result = self.compute_dict(argument)
memo_dict[memo_key] = result
return result
memoizer_counters.append(SCons.Memoize.CountValue('value'))
def value(self):
try:
return self._memo['value']
except KeyError:
pass
result = self.compute_value()
self._memo['value'] = result
return result
def get_memoizer_counter(self, name):
for mc in self.memoizer_counters:
if mc.method_name == name:
return mc
return None
class Returner(object):
def __init__(self, result):
self.result = result
self.calls = 0
def __call__(self, *args, **kw):
self.calls = self.calls + 1
return self.result
class CountDictTestCase(unittest.TestCase):
def test___call__(self):
"""Calling a Memoized dict method
"""
obj = FakeObject()
called = []
fd1 = Returner(1)
fd2 = Returner(2)
obj.compute_dict = fd1
r = obj.dict(11)
assert r == 1, r
obj.compute_dict = fd2
r = obj.dict(12)
assert r == 2, r
r = obj.dict(11)
assert r == 1, r
obj.compute_dict = fd1
r = obj.dict(11)
assert r == 1, r
r = obj.dict(12)
assert r == 2, r
assert fd1.calls == 1, fd1.calls
assert fd2.calls == 1, fd2.calls
c = obj.get_memoizer_counter('dict')
assert c.hit == 3, c.hit
assert c.miss == 2, c.miss
class CountValueTestCase(unittest.TestCase):
def test___call__(self):
"""Calling a Memoized value method
"""
obj = FakeObject()
called = []
fv1 = Returner(1)
fv2 = Returner(2)
obj.compute_value = fv1
r = obj.value()
assert r == 1, r
r = obj.value()
assert r == 1, r
obj.compute_value = fv2
r = obj.value()
assert r == 1, r
r = obj.value()
assert r == 1, r
assert fv1.calls == 1, fv1.calls
assert fv2.calls == 0, fv2.calls
c = obj.get_memoizer_counter('value')
assert c.hit == 3, c.hit
assert c.miss == 1, c.miss
if __name__ == "__main__":
suite = unittest.TestSuite()
tclasses = [
CountDictTestCase,
CountValueTestCase,
]
for tclass in tclasses:
names = unittest.getTestCaseNames(tclass, 'test_')
suite.addTests(list(map(tclass, names)))
TestUnit.run(suite)
# Local Variables:
# tab-width:4
# indent-tabs-mode:nil
# End:
# vim: set expandtab tabstop=4 shiftwidth=4:
|
