third_party.pylibs.pylint.src/pylint/test/unittest_pyreverse_inspector.py

# Copyright (c) 2003-2015 LOGILAB S.A. (Paris, FRANCE).
# http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# This program 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 of the License, or (at your option) any later
# version.
#
# This program 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
# this program; if not, write to the Free Software Foundation, Inc.,
# 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
"""
 for the visitors.diadefs module
"""
import os
import unittest

import astroid
from astroid import nodes
from astroid import bases
from astroid import manager
from astroid import test_utils

from pylint.pyreverse import inspector
from unittest_pyreverse_writer import get_project

MANAGER = manager.AstroidManager()

def astroid_wrapper(func, modname):
    return func(modname)


class LinkerTest(unittest.TestCase):

    def setUp(self):
        super(LinkerTest, self).setUp()
        self.project = get_project('data', 'data')
        self.linker = inspector.Linker(self.project)
        self.linker.visit(self.project)

    def test_class_implements(self):
        klass = self.project.get_module('data.clientmodule_test')['Ancestor']
        self.assertTrue(hasattr(klass, 'implements'))
        self.assertEqual(len(klass.implements), 1)
        self.assertTrue(isinstance(klass.implements[0], nodes.ClassDef))
        self.assertEqual(klass.implements[0].name, "Interface")
        klass = self.project.get_module('data.clientmodule_test')['Specialization']
        self.assertTrue(hasattr(klass, 'implements'))
        self.assertEqual(len(klass.implements), 0)

    def test_locals_assignment_resolution(self):
        klass = self.project.get_module('data.clientmodule_test')['Specialization']
        self.assertTrue(hasattr(klass, 'locals_type'))
        type_dict = klass.locals_type
        self.assertEqual(len(type_dict), 2)
        keys = sorted(type_dict.keys())
        self.assertEqual(keys, ['TYPE', 'top'])
        self.assertEqual(len(type_dict['TYPE']), 1)
        self.assertEqual(type_dict['TYPE'][0].value, 'final class')
        self.assertEqual(len(type_dict['top']), 1)
        self.assertEqual(type_dict['top'][0].value, 'class')

    def test_instance_attrs_resolution(self):
        klass = self.project.get_module('data.clientmodule_test')['Specialization']
        self.assertTrue(hasattr(klass, 'instance_attrs_type'))
        type_dict = klass.instance_attrs_type
        self.assertEqual(len(type_dict), 2)
        keys = sorted(type_dict.keys())
        self.assertEqual(keys, ['_id', 'relation'])
        self.assertTrue(isinstance(type_dict['relation'][0], bases.Instance),
                        type_dict['relation'])
        self.assertEqual(type_dict['relation'][0].name, 'DoNothing')
        self.assertIs(type_dict['_id'][0], astroid.YES)

    def test_concat_interfaces(self):
        cls = test_utils.extract_node('''
            class IMachin: pass

            class Correct2:
                """docstring"""
                __implements__ = (IMachin,)

            class BadArgument:
                """docstring"""
                __implements__ = (IMachin,)

            class InterfaceCanNowBeFound: #@
                """docstring"""
                __implements__ = BadArgument.__implements__ + Correct2.__implements__
        ''')
        interfaces = inspector.interfaces(cls)
        self.assertEqual([i.name for i in interfaces], ['IMachin'])

    def test_interfaces(self):
        module = astroid.parse('''
        class Interface(object): pass
        class MyIFace(Interface): pass
        class AnotherIFace(Interface): pass
        class Concrete0(object):
            __implements__ = MyIFace
        class Concrete1:                     
            __implements__ = (MyIFace, AnotherIFace)
        class Concrete2:
            __implements__ = (MyIFace, AnotherIFace)
        class Concrete23(Concrete1): pass
        ''')

        for klass, interfaces in (('Concrete0', ['MyIFace']),
                                  ('Concrete1', ['MyIFace', 'AnotherIFace']),
                                  ('Concrete2', ['MyIFace', 'AnotherIFace']),
                                  ('Concrete23', ['MyIFace', 'AnotherIFace'])):
            klass = module[klass]
            self.assertEqual([i.name for i in inspector.interfaces(klass)],
                             interfaces)


    def test_from_directory(self):
        expected = os.path.join('pylint', 'test', 'data', '__init__.py')
        self.assertEqual(self.project.name, 'data')
        self.assertTrue(self.project.path.endswith(expected), self.project.path)

    def test_project_node(self):
        expected = [
            'data', 'data.clientmodule_test',
            'data.suppliermodule_test',
        ]
        self.assertListEqual(sorted(self.project.keys()), expected)



if __name__ == '__main__':
    unittest.main()