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# copyright 2003-2014 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/>.
from logilab.common.testlib import unittest_main, TestCase, require_version
from astroid import ResolveError, MANAGER, Instance, nodes, YES, InferenceError
from astroid.builder import AstroidBuilder
from astroid.raw_building import build_module
from astroid.manager import AstroidManager
import sys
from os.path import join, abspath, dirname
class NonRegressionTC(TestCase):
def setUp(self):
sys.path.insert(0, join(dirname(abspath(__file__)), 'regrtest_data'))
def tearDown(self):
# Since we may have created a brainless manager, leading
# to a new cache builtin module and proxy classes in the constants,
# clear out the global manager cache.
MANAGER.clear_cache()
sys.path.pop(0)
def brainless_manager(self):
manager = AstroidManager()
# avoid caching into the AstroidManager borg since we get problems
# with other tests :
manager.__dict__ = {}
manager.astroid_cache = {}
manager._mod_file_cache = {}
manager.transforms = {}
manager.clear_cache() # trigger proper bootstraping
return manager
def test_module_path(self):
man = self.brainless_manager()
mod = man.ast_from_module_name('package.import_package_subpackage_module')
package = next(mod.igetattr('package'))
self.assertEqual(package.name, 'package')
subpackage = next(package.igetattr('subpackage'))
self.assertIsInstance(subpackage, nodes.Module)
self.assertTrue(subpackage.package)
self.assertEqual(subpackage.name, 'package.subpackage')
module = next(subpackage.igetattr('module'))
self.assertEqual(module.name, 'package.subpackage.module')
def test_package_sidepackage(self):
manager = self.brainless_manager()
assert 'package.sidepackage' not in MANAGER.astroid_cache
package = manager.ast_from_module_name('absimp')
self.assertIsInstance(package, nodes.Module)
self.assertTrue(package.package)
subpackage = next(package.getattr('sidepackage')[0].infer())
self.assertIsInstance(subpackage, nodes.Module)
self.assertTrue(subpackage.package)
self.assertEqual(subpackage.name, 'absimp.sidepackage')
def test_living_property(self):
builder = AstroidBuilder()
builder._done = {}
builder._module = sys.modules[__name__]
builder.object_build(build_module('module_name', ''), Whatever)
def test_new_style_class_detection(self):
try:
import pygtk
except ImportError:
self.skipTest('test skipped: pygtk is not available')
# XXX may fail on some pygtk version, because objects in
# gobject._gobject have __module__ set to gobject :(
builder = AstroidBuilder()
data = """
import pygtk
pygtk.require("2.6")
import gobject
class A(gobject.GObject):
pass
"""
astroid = builder.string_build(data, __name__, __file__)
a = astroid['A']
self.assertTrue(a.newstyle)
def test_pylint_config_attr(self):
try:
from pylint import lint
except ImportError:
self.skipTest('pylint not available')
mod = MANAGER.ast_from_module_name('pylint.lint')
pylinter = mod['PyLinter']
expect = ['OptionsManagerMixIn', 'object', 'MessagesHandlerMixIn',
'ReportsHandlerMixIn', 'BaseTokenChecker', 'BaseChecker',
'OptionsProviderMixIn']
self.assertListEqual([c.name for c in pylinter.ancestors()],
expect)
self.assertTrue(list(Instance(pylinter).getattr('config')))
infered = list(Instance(pylinter).igetattr('config'))
self.assertEqual(len(infered), 1)
self.assertEqual(infered[0].root().name, 'optparse')
self.assertEqual(infered[0].name, 'Values')
def test_numpy_crash(self):
"""test don't crash on numpy"""
#a crash occured somewhere in the past, and an
# InferenceError instead of a crash was better, but now we even infer!
try:
import numpy
except ImportError:
self.skipTest('test skipped: numpy is not available')
builder = AstroidBuilder()
data = """
from numpy import multiply
multiply(1, 2, 3)
"""
astroid = builder.string_build(data, __name__, __file__)
callfunc = astroid.body[1].value.func
infered = callfunc.infered()
self.assertEqual(len(infered), 1)
self.assertIsInstance(infered[0], Instance)
@require_version('3.0')
def test_nameconstant(self):
# used to fail for Python 3.4
builder = AstroidBuilder()
astroid = builder.string_build("def test(x=True): pass")
default = astroid.body[0].args.args[0]
self.assertEqual(default.name, 'x')
self.assertEqual(next(default.infer()).value, True)
@require_version('2.7')
def test_with_infer_assnames(self):
builder = AstroidBuilder()
data = """
with open('a.txt') as stream, open('b.txt'):
stream.read()
"""
astroid = builder.string_build(data, __name__, __file__)
# Used to crash due to the fact that the second
# context manager didn't use an assignment name.
list(astroid.nodes_of_class(nodes.CallFunc))[-1].infered()
def test_recursion_regression_issue25(self):
builder = AstroidBuilder()
data = """
import recursion as base
_real_Base = base.Base
class Derived(_real_Base):
pass
def run():
base.Base = Derived
"""
astroid = builder.string_build(data, __name__, __file__)
# Used to crash in _is_metaclass, due to wrong
# ancestors chain
classes = astroid.nodes_of_class(nodes.Class)
for klass in classes:
# triggers the _is_metaclass call
klass.type
def test_decorator_callchain_issue42(self):
builder = AstroidBuilder()
data = """
def test():
def factory(func):
def newfunc():
func()
return newfunc
return factory
@test()
def crash():
pass
"""
astroid = builder.string_build(data, __name__, __file__)
self.assertEqual(astroid['crash'].type, 'function')
def test_filter_stmts_scoping(self):
builder = AstroidBuilder()
data = """
def test():
compiler = int()
class B(compiler.__class__):
pass
compiler = B()
return compiler
"""
astroid = builder.string_build(data, __name__, __file__)
test = astroid['test']
result = next(test.infer_call_result(astroid))
self.assertIsInstance(result, Instance)
base = next(result._proxied.bases[0].infer())
self.assertEqual(base.name, 'int')
class Whatever(object):
a = property(lambda x: x, lambda x: x)
if __name__ == '__main__':
unittest_main()
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