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134 lines
4.2 KiB
Python
134 lines
4.2 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright (c) 2015-2017 Claudiu Popa <pcmanticore@gmail.com>
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# Copyright (c) 2015 Dmitry Pribysh <dmand@yandex.ru>
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# Copyright (c) 2015 Cezar <celnazli@bitdefender.com>
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# Copyright (c) 2015 James Morgensen <james.morgensen@gmail.com>
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# Copyright (c) 2016 Derek Gustafson <degustaf@gmail.com>
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# Copyright (c) 2018 Marianna Polatoglou <mpolatoglou@bloomberg.net>
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# Copyright (c) 2018 Ville Skyttä <ville.skytta@upcloud.com>
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# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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# For details: https://github.com/PyCQA/pylint/blob/master/COPYING
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"""Unit tests for the imports checker."""
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import os
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import astroid
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from pylint.checkers import imports
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from pylint.interfaces import UNDEFINED
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from pylint.testutils import CheckerTestCase, Message, set_config
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REGR_DATA = os.path.join(os.path.dirname(__file__), "regrtest_data", "")
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class TestImportsChecker(CheckerTestCase):
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CHECKER_CLASS = imports.ImportsChecker
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@set_config(
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ignored_modules=("external_module", "fake_module.submodule", "foo", "bar")
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)
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def test_import_error_skipped(self):
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"""Make sure that imports do not emit an 'import-error' when the
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module is configured to be ignored."""
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node = astroid.extract_node(
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"""
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from external_module import anything
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"""
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)
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with self.assertNoMessages():
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self.checker.visit_importfrom(node)
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node = astroid.extract_node(
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"""
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from external_module.another_module import anything
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"""
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)
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with self.assertNoMessages():
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self.checker.visit_importfrom(node)
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node = astroid.extract_node(
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"""
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import external_module
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"""
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)
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with self.assertNoMessages():
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self.checker.visit_import(node)
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node = astroid.extract_node(
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"""
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from fake_module.submodule import anything
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"""
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)
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with self.assertNoMessages():
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self.checker.visit_importfrom(node)
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node = astroid.extract_node(
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"""
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from fake_module.submodule.deeper import anything
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"""
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)
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with self.assertNoMessages():
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self.checker.visit_importfrom(node)
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node = astroid.extract_node(
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"""
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import foo, bar
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"""
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)
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msg = Message("multiple-imports", node=node, args="foo, bar")
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with self.assertAddsMessages(msg):
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self.checker.visit_import(node)
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node = astroid.extract_node(
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"""
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import foo
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import bar
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"""
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)
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with self.assertNoMessages():
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self.checker.visit_import(node)
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def test_reimported_same_line(self):
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"""
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Test that duplicate imports on single line raise 'reimported'.
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"""
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node = astroid.extract_node("from time import sleep, sleep, time")
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msg = Message(msg_id="reimported", node=node, args=("sleep", 1))
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with self.assertAddsMessages(msg):
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self.checker.visit_importfrom(node)
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def test_relative_beyond_top_level(self):
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module = astroid.MANAGER.ast_from_module_name("beyond_top", REGR_DATA)
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import_from = module.body[0]
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msg = Message(msg_id="relative-beyond-top-level", node=import_from)
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with self.assertAddsMessages(msg):
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self.checker.visit_importfrom(import_from)
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with self.assertNoMessages():
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self.checker.visit_importfrom(module.body[1])
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with self.assertNoMessages():
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self.checker.visit_importfrom(module.body[2].body[0])
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def test_wildcard_import_init(self):
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module = astroid.MANAGER.ast_from_module_name("init_wildcard", REGR_DATA)
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import_from = module.body[0]
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with self.assertNoMessages():
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self.checker.visit_importfrom(import_from)
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def test_wildcard_import_non_init(self):
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module = astroid.MANAGER.ast_from_module_name("wildcard", REGR_DATA)
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import_from = module.body[0]
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msg = Message(
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msg_id="wildcard-import",
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node=import_from,
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args="empty",
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confidence=UNDEFINED,
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)
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with self.assertAddsMessages(msg):
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self.checker.visit_importfrom(import_from)
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