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- # Copyright (c) 2015-2017 Claudiu Popa <pcmanticore@gmail.com>
- # Copyright (c) 2015 Dmitry Pribysh <dmand@yandex.ru>
- # Copyright (c) 2015 Cezar <celnazli@bitdefender.com>
- # Copyright (c) 2015 James Morgensen <james.morgensen@gmail.com>
- # Copyright (c) 2016 Derek Gustafson <degustaf@gmail.com>
-
- # Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
- # For details: https://github.com/PyCQA/pylint/blob/master/COPYING
-
- """Unit tests for the imports checker."""
- import os
-
- import astroid
- from pylint.checkers import imports
- from pylint.testutils import CheckerTestCase, Message, set_config
-
-
- class TestImportsChecker(CheckerTestCase):
-
- CHECKER_CLASS = imports.ImportsChecker
-
- @set_config(ignored_modules=('external_module',
- 'fake_module.submodule',
- 'foo',
- 'bar'))
- def test_import_error_skipped(self):
- """Make sure that imports do not emit a 'import-error' when the
- module is configured to be ignored."""
-
- node = astroid.extract_node("""
- from external_module import anything
- """)
- with self.assertNoMessages():
- self.checker.visit_importfrom(node)
-
- node = astroid.extract_node("""
- from external_module.another_module import anything
- """)
- with self.assertNoMessages():
- self.checker.visit_importfrom(node)
-
- node = astroid.extract_node("""
- import external_module
- """)
- with self.assertNoMessages():
- self.checker.visit_import(node)
-
- node = astroid.extract_node("""
- from fake_module.submodule import anything
- """)
- with self.assertNoMessages():
- self.checker.visit_importfrom(node)
-
- node = astroid.extract_node("""
- from fake_module.submodule.deeper import anything
- """)
- with self.assertNoMessages():
- self.checker.visit_importfrom(node)
-
- node = astroid.extract_node("""
- import foo, bar
- """)
- msg = Message('multiple-imports', node=node, args='foo, bar')
- with self.assertAddsMessages(msg):
- self.checker.visit_import(node)
-
- node = astroid.extract_node("""
- import foo
- import bar
- """)
- with self.assertNoMessages():
- self.checker.visit_import(node)
-
- def test_reimported_same_line(self):
- """
- Test that duplicate imports on single line raise 'reimported'.
- """
- node = astroid.extract_node('from time import sleep, sleep, time')
- msg = Message(msg_id='reimported', node=node, args=('sleep', 1))
- with self.assertAddsMessages(msg):
- self.checker.visit_importfrom(node)
-
- def test_relative_beyond_top_level(self):
- here = os.path.abspath(os.path.dirname(__file__))
- path = os.path.join(here, 'regrtest_data', 'beyond_top', '__init__.py')
- with open(path) as stream:
- data = stream.read()
- module = astroid.parse(data, module_name='beyond_top', path=path)
- import_from = module.body[0]
-
- msg = Message(msg_id='relative-beyond-top-level',
- node=import_from)
- with self.assertAddsMessages(msg):
- self.checker.visit_importfrom(import_from)
- with self.assertNoMessages():
- self.checker.visit_importfrom(module.body[1])
- with self.assertNoMessages():
- self.checker.visit_importfrom(module.body[2].body[0])
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