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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/>.
"""
unit tests for module modutils (module manipulation utilities)
"""
import os
import sys
import unittest
from logilab.common import configuration
from astroid import modutils
from astroid.tests import resources
class ModuleFileTest(unittest.TestCase):
package = "mypypa"
def tearDown(self):
for k in list(sys.path_importer_cache.keys()):
if 'MyPyPa' in k:
del sys.path_importer_cache[k]
def test_find_zipped_module(self):
mtype, mfile = modutils._module_file(
[self.package], [resources.find('data/MyPyPa-0.1.0-py2.5.zip')])
self.assertEqual(mtype, modutils.PY_ZIPMODULE)
self.assertEqual(mfile.split(os.sep)[-3:], ["data", "MyPyPa-0.1.0-py2.5.zip", self.package])
def test_find_egg_module(self):
mtype, mfile = modutils._module_file(
[self.package], [resources.find('data/MyPyPa-0.1.0-py2.5.egg')])
self.assertEqual(mtype, modutils.PY_ZIPMODULE)
self.assertEqual(mfile.split(os.sep)[-3:], ["data", "MyPyPa-0.1.0-py2.5.egg", self.package])
class LoadModuleFromNameTest(unittest.TestCase):
""" load a python module from it's name """
def test_knownValues_load_module_from_name_1(self):
self.assertEqual(modutils.load_module_from_name('sys'), sys)
def test_knownValues_load_module_from_name_2(self):
self.assertEqual(modutils.load_module_from_name('os.path'), os.path)
def test_raise_load_module_from_name_1(self):
self.assertRaises(ImportError,
modutils.load_module_from_name, 'os.path', use_sys=0)
class GetModulePartTest(unittest.TestCase):
"""given a dotted name return the module part of the name"""
def test_knownValues_get_module_part_1(self):
self.assertEqual(modutils.get_module_part('astroid.modutils'),
'astroid.modutils')
def test_knownValues_get_module_part_2(self):
self.assertEqual(modutils.get_module_part('astroid.modutils.get_module_part'),
'astroid.modutils')
def test_knownValues_get_module_part_3(self):
"""relative import from given file"""
self.assertEqual(modutils.get_module_part('node_classes.AssName',
modutils.__file__), 'node_classes')
def test_knownValues_get_compiled_module_part(self):
self.assertEqual(modutils.get_module_part('math.log10'), 'math')
self.assertEqual(modutils.get_module_part('math.log10', __file__), 'math')
def test_knownValues_get_builtin_module_part(self):
self.assertEqual(modutils.get_module_part('sys.path'), 'sys')
self.assertEqual(modutils.get_module_part('sys.path', '__file__'), 'sys')
def test_get_module_part_exception(self):
self.assertRaises(ImportError, modutils.get_module_part, 'unknown.module',
modutils.__file__)
class ModPathFromFileTest(unittest.TestCase):
""" given an absolute file path return the python module's path as a list """
def test_knownValues_modpath_from_file_1(self):
self.assertEqual(modutils.modpath_from_file(configuration.__file__),
['logilab', 'common', 'configuration'])
def test_knownValues_modpath_from_file_2(self):
self.assertEqual(modutils.modpath_from_file('unittest_modutils.py',
{os.getcwd(): 'arbitrary.pkg'}),
['arbitrary', 'pkg', 'unittest_modutils'])
def test_raise_modpath_from_file_Exception(self):
self.assertRaises(Exception, modutils.modpath_from_file, '/turlututu')
class LoadModuleFromPathTest(resources.SysPathSetup, unittest.TestCase):
def test_do_not_load_twice(self):
foo = modutils.load_module_from_modpath(['data', 'lmfp', 'foo'])
lmfp = modutils.load_module_from_modpath(['data', 'lmfp'])
self.assertEqual(len(sys.just_once), 1)
del sys.just_once
class FileFromModPathTest(resources.SysPathSetup, unittest.TestCase):
"""given a mod path (i.e. splited module / package name), return the
corresponding file, giving priority to source file over precompiled file
if it exists"""
def test_site_packages(self):
self.assertEqual(os.path.realpath(modutils.file_from_modpath(['astroid', 'modutils'])),
os.path.realpath(modutils.__file__.replace('.pyc', '.py')))
def test_std_lib(self):
from os import path
self.assertEqual(os.path.realpath(modutils.file_from_modpath(['os', 'path']).replace('.pyc', '.py')),
os.path.realpath(path.__file__.replace('.pyc', '.py')))
def test_xmlplus(self):
try:
# don't fail if pyxml isn't installed
from xml.dom import ext
except ImportError:
pass
else:
self.assertEqual(os.path.realpath(modutils.file_from_modpath(['xml', 'dom', 'ext']).replace('.pyc', '.py')),
os.path.realpath(ext.__file__.replace('.pyc', '.py')))
def test_builtin(self):
self.assertEqual(modutils.file_from_modpath(['sys']),
None)
def test_unexisting(self):
self.assertRaises(ImportError, modutils.file_from_modpath, ['turlututu'])
def test_unicode_in_package_init(self):
# file_from_modpath should not crash when reading an __init__
# file with unicode characters.
modutils.file_from_modpath(["data", "unicode_package", "core"])
class GetSourceFileTest(unittest.TestCase):
def test(self):
self.assertEqual(modutils.get_source_file(os.path.__file__),
os.path.normpath(os.path.__file__.replace('.pyc', '.py')))
def test_raise(self):
self.assertRaises(modutils.NoSourceFile, modutils.get_source_file, 'whatever')
class StandardLibModuleTest(resources.SysPathSetup, unittest.TestCase):
"""
return true if the module may be considered as a module from the standard
library
"""
def test_builtins(self):
if sys.version_info < (3, 0):
self.assertEqual(modutils.is_standard_module('__builtin__'), True)
self.assertEqual(modutils.is_standard_module('builtins'), False)
else:
self.assertEqual(modutils.is_standard_module('__builtin__'), False)
self.assertEqual(modutils.is_standard_module('builtins'), True)
def test_builtin(self):
self.assertEqual(modutils.is_standard_module('sys'), True)
def test_nonstandard(self):
self.assertEqual(modutils.is_standard_module('logilab'), False)
def test_unknown(self):
self.assertEqual(modutils.is_standard_module('unknown'), False)
def test_builtin(self):
self.assertEqual(modutils.is_standard_module('marshal'), True)
@unittest.skipIf(sys.version_info > (3, 0) and sys.platform.startswith("win"),
"Python 3's imp module on Windows is broken since it returns "
"the module path with wrong casing.")
def test_4(self):
self.assertEqual(modutils.is_standard_module('hashlib'), True)
self.assertEqual(modutils.is_standard_module('pickle'), True)
self.assertEqual(modutils.is_standard_module('email'), True)
self.assertEqual(modutils.is_standard_module('io'), sys.version_info >= (2, 6))
self.assertEqual(modutils.is_standard_module('StringIO'), sys.version_info < (3, 0))
def test_custom_path(self):
datadir = resources.find('')
if datadir.startswith(modutils.EXT_LIB_DIR):
self.skipTest('known breakage of is_standard_module on installed package')
self.assertEqual(modutils.is_standard_module('data.module', (datadir,)), True)
self.assertEqual(modutils.is_standard_module('data.module', (os.path.abspath(datadir),)), True)
def test_failing_edge_cases(self):
from logilab import common
# using a subpackage/submodule path as std_path argument
self.assertEqual(modutils.is_standard_module('logilab.common', common.__path__), False)
# using a module + object name as modname argument
self.assertEqual(modutils.is_standard_module('sys.path'), True)
# this is because only the first package/module is considered
self.assertEqual(modutils.is_standard_module('sys.whatever'), True)
self.assertEqual(modutils.is_standard_module('logilab.whatever', common.__path__), False)
class IsRelativeTest(unittest.TestCase):
def test_knownValues_is_relative_1(self):
import astroid
self.assertEqual(modutils.is_relative('modutils', astroid.__path__[0]),
True)
def test_knownValues_is_relative_2(self):
from logilab.common import tree
self.assertEqual(modutils.is_relative('modutils', tree.__file__),
True)
def test_knownValues_is_relative_3(self):
import astroid
self.assertEqual(modutils.is_relative('astroid', astroid.__path__[0]),
False)
class GetModuleFilesTest(unittest.TestCase):
def test_get_module_files_1(self):
"""given a directory return a list of all available python module's files, even
in subdirectories
"""
package = resources.find('data/find_test')
modules = set(modutils.get_module_files(package, []))
self.assertEqual(
modules,
{os.path.join(package, x) for x in ['__init__.py', 'module.py', 'module2.py', 'noendingnewline.py', 'nonregr.py']})
def test_load_module_set_attribute(self):
import logilab.common.fileutils
import logilab
del logilab.common.fileutils
del sys.modules['logilab.common.fileutils']
m = modutils.load_module_from_modpath(['logilab', 'common', 'fileutils'])
self.assertTrue( hasattr(logilab, 'common') )
self.assertTrue( hasattr(logilab.common, 'fileutils') )
self.assertTrue( m is logilab.common.fileutils )
if __name__ == '__main__':
unittest.main()
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