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
192
193
194
|
import sys
import pytest
from makefun import create_function
# Python 2 does not support function annotations; Python 3.0-3.4 do not support variable annotations.
params_type_hints_allowed = sys.version_info.major >= 3 and sys.version_info.minor >= 5
if params_type_hints_allowed:
type_hints_variants = [False, 1, 2]
else:
type_hints_variants = [False]
@pytest.mark.parametrize('with_self_ref', [True, False], ids="self_ref={}".format)
@pytest.mark.parametrize('params_type_hints', type_hints_variants, ids="type_hints={}".format)
def test_basic(params_type_hints, with_self_ref):
"""
Tests that we can create a simple dynamic function from a signature string, redirected to a generic handler.
"""
if params_type_hints == 1:
from typing import Any
func_signature = "foo(b, # type: int\n" \
" a = 0, # type: float\n" \
" ):\n # type: (...) -> Any"
elif params_type_hints == 2:
from typing import Any
func_signature = "foo(b: int, a: float=0) -> Any"
else:
func_signature = "foo(b, a=0)"
# this handler will grab the inputs and return them
if with_self_ref:
def identity_handler(facade, *args, **kwargs):
"""test doc"""
return facade, args, kwargs
else:
def identity_handler(*args, **kwargs):
"""test doc"""
return args, kwargs
# create the dynamic function
dynamic_fun = create_function(func_signature, identity_handler, inject_as_first_arg=with_self_ref)
# a few asserts on the signature
assert dynamic_fun.__name__ == 'foo'
assert dynamic_fun.__doc__ == 'test doc'
assert dynamic_fun.__module__ == test_basic.__module__
if params_type_hints == 1:
# unfortunately
assert dynamic_fun.__annotations__ == {}
elif params_type_hints == 2:
assert dynamic_fun.__annotations__ == {'a': float, 'b': int, 'return': Any}
else:
assert dynamic_fun.__annotations__ == {}
assert dynamic_fun.__defaults__ == (0,)
assert dynamic_fun.__kwdefaults__ is None
if params_type_hints != 1:
func_signature = func_signature + ":"
if with_self_ref:
src = "def " + func_signature + '\n return _func_impl_(foo, b=b, a=a)\n'
else:
src = "def " + func_signature + '\n return _func_impl_(b=b, a=a)\n'
dct = {'__source__': src, '__func_impl__': identity_handler}
if not params_type_hints_allowed:
dct['__annotations__'] = dict()
dct['__kwdefaults__'] = None
assert vars(dynamic_fun) == dct
# try to call it !
if with_self_ref:
f, args, kwargs = dynamic_fun(2)
assert f is dynamic_fun
else:
args, kwargs = dynamic_fun(2)
assert args == ()
assert kwargs == {'a': 0, 'b': 2}
# def test_sig():
# b_param = Parameter()
# parameters = OrderedDict(
# ((b_param.name, b_param),
# (a_param.name, a_param))
# )
#
# s = Signature().replace(parameters=parameters)
# # s = s.replace(return_annotation=return_annotation)
@pytest.mark.skip("This test is known to fail because inspect.signature does not detect comment type hints")
def test_type_comments():
"""Tests that """
func_signature = """
foo(b, # type: int
a = 0, # type: float
):
# type: (...) -> str
"""
def dummy_handler(*args, **kwargs):
return "hello"
dynamic_fun = create_function(func_signature, dummy_handler)
assert dynamic_fun.__annotations__ == {'a': float, 'b': int, 'return': str}
params_type_hints_allowed = sys.version_info.major >= 3 and sys.version_info.minor >= 5
star_followed_by_arg_allowed = sys.version_info.major >= 3
class TestArguments:
def test_case_simple(self):
params_str = "b, a = 0"
# case_simple.__name__ = params_str
# param_names = ['b', 'a']
inputs = "12"
args = ()
kwargs = {'a': 0, 'b': 12}
_test_arguments(params_str, inputs, (args, kwargs))
@pytest.mark.skipif(not star_followed_by_arg_allowed, reason='not allowed in this version of python')
def test_case_simple_with_star(self):
params_str = "b, *, a = 0"
# case_simple_with_star.__name__ = params_str
# param_names = ['b', '*', 'a']
inputs = "12"
args = ()
kwargs = {'a': 0, 'b': 12}
_test_arguments(params_str, inputs, (args, kwargs))
@pytest.mark.skipif(not star_followed_by_arg_allowed, reason='not allowed in this version of python')
def test_case_simple_with_star_args1(self):
params_str = "b, *args, a = 0"
# case_simple_with_star_args1.__name__ = params_str
# param_names = ['b', 'a']
inputs = "12"
# args = ()
# kwargs = {'a': 0, 'b': 12}
args = (12,)
kwargs = {'a': 0}
_test_arguments(params_str, inputs, (args, kwargs))
@pytest.mark.skipif(not star_followed_by_arg_allowed, reason='not allowed in this version of python')
def test_case_simple_with_star_args2(self):
params_str = "*args, a = 0"
# case_simple_with_star_args2.__name__ = params_str
# param_names = ['b', 'a']
inputs = "12"
args = (12, )
kwargs = {'a': 0}
_test_arguments(params_str, inputs, (args, kwargs))
def test_case_with_type_comments_and_newlines(self):
params_str = "b, # type: int\n" \
"a = 0 # type: float\n"
# test_case_with_type_comments_and_newlines.__name__ = params_str
# param_names = ['b', 'a']
inputs = "12"
args = ()
kwargs = {'a': 0, 'b': 12}
_test_arguments(params_str, inputs, (args, kwargs))
def _test_arguments(params_str, inputs, expected):
""" Tests that the `PARAM_DEF` regexp works correctly """
def generic_handler(*args, **kwargs):
return args, kwargs
f = create_function("foo(%s)" % params_str, generic_handler)
args, kwargs = eval("f(%s)" % inputs, globals(), locals())
assert (args, kwargs) == expected
|
