# copyright 2003-2013 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 TestCase, unittest_main

import sys
from os.path import join, abspath, dirname
from astroid.manager import AstroidManager, _silent_no_wrap
from astroid.bases import  BUILTINS
from astroid.exceptions import AstroidBuildingException

DATA = join(dirname(abspath(__file__)), 'data')
PY3K = sys.version_info > (3, 0)

class AstroidManagerTC(TestCase):
    def setUp(self):
        self.manager = AstroidManager()
        self.manager.astroid_cache.clear()

    def test_ast_from_file(self):
        """check if the method return a good astroid object"""
        import unittest
        filepath = unittest.__file__
        astroid = self.manager.ast_from_file(filepath)
        self.assertEqual(astroid.name, 'unittest')
        self.assertIn('unittest', self.manager.astroid_cache)

    def test_ast_from_file_cache(self):
        """check if the cache works"""
        import unittest
        filepath = unittest.__file__
        self.manager.ast_from_file(filepath)
        astroid = self.manager.ast_from_file('unhandledName', 'unittest')
        self.assertEqual(astroid.name, 'unittest')
        self.assertIn('unittest', self.manager.astroid_cache)

    def test_ast_from_file_astro_builder(self):
        """check if the source is at True, AstroidBuilder build a good astroid"""
        import unittest
        filepath = unittest.__file__
        astroid = self.manager.ast_from_file(filepath, None, True, True)
        self.assertEqual(astroid.name, 'unittest')
        self.assertIn('unittest', self.manager.astroid_cache)

    def test_ast_from_file_name_astro_builder_exception(self):
        """check if an exception is thrown if we give a wrong filepath"""
        self.assertRaises(AstroidBuildingException, self.manager.ast_from_file, 'unhandledName')

    def test_do_not_expose_main(self):
        obj = self.manager.ast_from_module_name('__main__')
        self.assertEqual(obj.name, '__main__')
        self.assertEqual(obj.items(), [])

    def test_ast_from_module_name(self):
        """check if the ast_from_module_name method return a good astroid"""
        astroid = self.manager.ast_from_module_name('unittest')
        self.assertEqual(astroid.name, 'unittest')
        self.assertIn('unittest', self.manager.astroid_cache)

    def test_ast_from_module_name_not_python_source(self):
        """check if the ast_from_module_name method return a good astroid with a no python source module"""
        astroid = self.manager.ast_from_module_name('time')
        self.assertEqual(astroid.name, 'time')
        self.assertIn('time', self.manager.astroid_cache)
        self.assertEqual(astroid.pure_python, False)

    def test_ast_from_module_name_astro_builder_exception(self):
        """check if the method raise an exception if we give a wrong module"""
        self.assertRaises(AstroidBuildingException, self.manager.ast_from_module_name, 'unhandledModule')

    def _test_ast_from_zip(self, archive):
        origpath = sys.path[:]
        sys.modules.pop('mypypa', None)
        archive_path = join(DATA, archive)
        sys.path.insert(0, archive_path)
        try:
            module = self.manager.ast_from_module_name('mypypa')
            self.assertEqual(module.name, 'mypypa')
            end = join(archive, 'mypypa') 
            self.assertTrue(module.file.endswith(end),
                            module.file)
        finally:
            # remove the module, else after importing egg, we don't get the zip
            if 'mypypa' in self.manager.astroid_cache:
                del self.manager.astroid_cache['mypypa']
                del self.manager._mod_file_cache[('mypypa', None)]
            if archive_path in sys.path_importer_cache:
                del sys.path_importer_cache[archive_path]
            sys.path = origpath

    def test_ast_from_module_name_egg(self):
        self._test_ast_from_zip('MyPyPa-0.1.0-py2.5.egg')

    def test_ast_from_module_name_zip(self):
        self._test_ast_from_zip('MyPyPa-0.1.0-py2.5.zip')

    def test_zip_import_data(self):
        """check if zip_import_data works"""
        filepath = self.datapath('MyPyPa-0.1.0-py2.5.zip/mypypa')
        astroid = self.manager.zip_import_data(filepath)
        self.assertEqual(astroid.name, 'mypypa')

    def test_zip_import_data_without_zipimport(self):
        """check if zip_import_data return None without zipimport"""
        self.assertEqual(self.manager.zip_import_data('path'), None)

    def test_file_from_module(self):
        """check if the unittest filepath is equals to the result of the method""" 
        import unittest
        if PY3K:
            unittest_file = unittest.__file__
        else:
            unittest_file = unittest.__file__[:-1]
        self.assertEqual(unittest_file,
                        self.manager.file_from_module_name('unittest', None))

    def test_file_from_module_name_astro_building_exception(self):
        """check if the method launch a exception with a wrong module name"""
        self.assertRaises(AstroidBuildingException, self.manager.file_from_module_name, 'unhandledModule', None)

    def test_ast_from_module(self):
        import unittest
        astroid = self.manager.ast_from_module(unittest)
        self.assertEqual(astroid.pure_python, True)
        import time
        astroid = self.manager.ast_from_module(time)
        self.assertEqual(astroid.pure_python, False)

    def test_ast_from_module_cache(self):
        """check if the module is in the cache manager"""
        import unittest
        astroid = self.manager.ast_from_module(unittest)
        self.assertEqual(astroid.name, 'unittest')
        self.assertIn('unittest', self.manager.astroid_cache)

    def test_ast_from_class(self):
        astroid = self.manager.ast_from_class(int)
        self.assertEqual(astroid.name, 'int')
        self.assertEqual(astroid.parent.frame().name, BUILTINS)

        astroid = self.manager.ast_from_class(object)
        self.assertEqual(astroid.name, 'object')
        self.assertEqual(astroid.parent.frame().name, BUILTINS)
        self.assertIn('__setattr__', astroid)

    def test_ast_from_class_with_module(self):
        """check if the method works with the module name"""
        astroid = self.manager.ast_from_class(int, int.__module__)
        self.assertEqual(astroid.name, 'int')
        self.assertEqual(astroid.parent.frame().name, BUILTINS)

        astroid = self.manager.ast_from_class(object, object.__module__)
        self.assertEqual(astroid.name, 'object')
        self.assertEqual(astroid.parent.frame().name, BUILTINS)
        self.assertIn('__setattr__', astroid)

    def test_ast_from_class_attr_error(self):
        """give a wrong class at the ast_from_class method"""
        self.assertRaises(AstroidBuildingException, self.manager.ast_from_class, None)

    def test_from_directory(self):
        obj = self.manager.project_from_files([DATA], _silent_no_wrap, 'data')
        self.assertEqual(obj.name, 'data')
        self.assertEqual(obj.path, join(DATA, '__init__.py'))

    def test_project_node(self):
        obj = self.manager.project_from_files([DATA], _silent_no_wrap, 'data')
        expected = set(['SSL1', '__init__', 'all', 'appl', 'format', 'module',
                        'module2', 'noendingnewline', 'nonregr', 'notall'])
        expected = ['data', 'data.SSL1', 'data.SSL1.Connection1',
                    'data.absimport', 'data.all',
                    'data.appl', 'data.appl.myConnection', 'data.email', 'data.format',
                    'data.module', 'data.module2', 'data.noendingnewline',
                    'data.nonregr', 'data.notall']
        self.assertListEqual(sorted(k for k in obj.keys()), expected)

class BorgAstroidManagerTC(TestCase):

    def test_borg(self):
        """test that the AstroidManager is really a borg, i.e. that two different
        instances has same cache"""
        first_manager = AstroidManager()
        built = first_manager.ast_from_module_name(BUILTINS)

        second_manager = AstroidManager()
        second_built = first_manager.ast_from_module_name(BUILTINS)
        self.assertIs(built, second_built)


if __name__ == '__main__':
    unittest_main()


