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
|
# Copyright (c) 2003-2016 LOGILAB S.A. (Paris, FRANCE).
# http://www.logilab.fr/ -- mailto:contact@logilab.fr
# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
# For details: https://github.com/PyCQA/pylint/blob/master/COPYING
"""Unit tests for the variables checker."""
import sys
import os
import unittest
import astroid
from pylint.checkers import variables
from pylint.testutils import CheckerTestCase, linter, set_config, Message
class VariablesCheckerTC(CheckerTestCase):
CHECKER_CLASS = variables.VariablesChecker
def test_bitbucket_issue_78(self):
""" Issue 78 report a false positive for unused-module """
module = astroid.parse("""
from sys import path
path += ['stuff']
def func():
other = 1
return len(other)
""")
with self.assertNoMessages():
self.walk(module)
@set_config(ignored_modules=('argparse',))
def test_no_name_in_module_skipped(self):
"""Make sure that 'from ... import ...' does not emit a
'no-name-in-module' with a module that is configured
to be ignored.
"""
node = astroid.extract_node("""
from argparse import THIS_does_not_EXIST
""")
with self.assertNoMessages():
self.checker.visit_importfrom(node)
def test_all_elements_without_parent(self):
node = astroid.extract_node('__all__ = []')
node.value.elts.append(astroid.Const('test'))
root = node.root()
with self.assertNoMessages():
self.checker.visit_module(root)
self.checker.leave_module(root)
@set_config(callbacks=('callback_', '_callback'))
def test_custom_callback_string(self):
""" Test the --calbacks option works. """
def cleanup():
self.checker._to_consume = _to_consume
_to_consume = self.checker._to_consume
self.checker._to_consume = []
self.addCleanup(cleanup)
node = astroid.extract_node("""
def callback_one(abc):
''' should not emit unused-argument. '''
""")
with self.assertNoMessages():
self.checker.visit_functiondef(node)
self.checker.leave_functiondef(node)
node = astroid.extract_node("""
def two_callback(abc, defg):
''' should not emit unused-argument. '''
""")
with self.assertNoMessages():
self.checker.visit_functiondef(node)
self.checker.leave_functiondef(node)
node = astroid.extract_node("""
def normal_func(abc):
''' should emit unused-argument. '''
""")
with self.assertAddsMessages(
Message('unused-argument', node=node['abc'], args='abc')):
self.checker.visit_functiondef(node)
self.checker.leave_functiondef(node)
node = astroid.extract_node("""
def cb_func(abc):
''' Previous callbacks are overriden. '''
""")
with self.assertAddsMessages(
Message('unused-argument', node=node['abc'], args='abc')):
self.checker.visit_functiondef(node)
self.checker.leave_functiondef(node)
def test_redefined_builtin_ignored(self):
node = astroid.parse('''
from future.builtins import open
''')
with self.assertNoMessages():
self.checker.visit_module(node)
@set_config(redefining_builtins_modules=('os',))
def test_redefined_builtin_custom_modules(self):
node = astroid.parse('''
from os import open
''')
with self.assertNoMessages():
self.checker.visit_module(node)
@set_config(redefining_builtins_modules=('os',))
def test_redefined_builtin_modname_not_ignored(self):
node = astroid.parse('''
from future.builtins import open
''')
with self.assertAddsMessages(
Message('redefined-builtin', node=node.body[0], args='open')):
self.checker.visit_module(node)
@set_config(redefining_builtins_modules=('os',))
def test_redefined_builtin_in_function(self):
node = astroid.extract_node('''
def test():
from os import open
''')
with self.assertNoMessages():
self.checker.visit_module(node.root())
self.checker.visit_functiondef(node)
class MissingSubmoduleTest(CheckerTestCase):
CHECKER_CLASS = variables.VariablesChecker
def test_package_all(self):
regr_data = os.path.join(os.path.dirname(os.path.abspath(__file__)),
'regrtest_data')
sys.path.insert(0, regr_data)
try:
linter.check(os.path.join(regr_data, 'package_all'))
got = linter.reporter.finalize().strip()
self.assertEqual(got, "E: 3: Undefined variable name "
"'missing' in __all__")
finally:
sys.path.pop(0)
if __name__ == '__main__':
unittest.main()
|
