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# copyright 2003-2015 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# This file is part of astroid.
#
# astroid is free software: you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by the
# Free Software Foundation, either version 2.1 of the License, or (at your
# option) any later version.
#
# astroid is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
# for more details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with astroid. If not, see <http://www.gnu.org/licenses/>.
"""Hooks for nose library."""
import re
import textwrap
import astroid
import astroid.builder
_BUILDER = astroid.builder.AstroidBuilder(astroid.MANAGER)
def _pep8(name, caps=re.compile('([A-Z])')):
return caps.sub(lambda m: '_' + m.groups()[0].lower(), name)
def _nose_tools_functions():
"""Get an iterator of names and bound methods."""
module = _BUILDER.string_build(textwrap.dedent('''
import unittest
class Test(unittest.TestCase):
pass
a = Test()
'''))
try:
case = next(module['a'].infer())
except astroid.InferenceError:
return
for method in case.methods():
if method.name.startswith('assert') and '_' not in method.name:
pep8_name = _pep8(method.name)
yield pep8_name, astroid.BoundMethod(method, case)
if method.name == 'assertEqual':
# nose also exports assert_equals.
yield 'assert_equals', astroid.BoundMethod(method, case)
def _nose_tools_transform(node):
for method_name, method in _nose_tools_functions():
node.locals[method_name] = [method]
def _nose_tools_trivial_transform():
"""Custom transform for the nose.tools module."""
stub = _BUILDER.string_build('''__all__ = []''')
all_entries = ['ok_', 'eq_']
for pep8_name, method in _nose_tools_functions():
all_entries.append(pep8_name)
stub[pep8_name] = method
# Update the __all__ variable, since nose.tools
# does this manually with .append.
all_assign = stub['__all__'].parent
all_object = astroid.List(all_entries)
all_object.parent = all_assign
all_assign.value = all_object
return stub
astroid.register_module_extender(astroid.MANAGER, 'nose.tools.trivial',
_nose_tools_trivial_transform)
astroid.MANAGER.register_transform(astroid.Module, _nose_tools_transform,
lambda n: n.name == 'nose.tools')
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