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# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
# For details: https://github.com/pylint-dev/pylint/blob/main/LICENSE
# Copyright (c) https://github.com/pylint-dev/pylint/blob/main/CONTRIBUTORS.txt
"""Tests the local module directory comparison logic which requires mocking file directories"""
from unittest.mock import MagicMock, patch
import astroid
from pylint.extensions import private_import
from pylint.interfaces import HIGH
from pylint.testutils import CheckerTestCase, MessageTest
class TestPrivateImport(CheckerTestCase):
"""The mocked dirname is the directory of the file being linted, the node is code inside that file"""
CHECKER_CLASS = private_import.PrivateImportChecker
@patch("pathlib.Path.parent")
def test_internal_module(self, parent: MagicMock) -> None:
parent.parts = ("", "dir", "module")
import_from = astroid.extract_node("""from module import _file""")
with self.assertNoMessages():
self.checker.visit_importfrom(import_from)
@patch("pathlib.Path.parent")
def test_external_module_nested(self, parent: MagicMock) -> None:
parent.parts = ("", "dir", "module", "module_files", "util")
import_from = astroid.extract_node("""from module import _file""")
with self.assertNoMessages():
self.checker.visit_importfrom(import_from)
@patch("pathlib.Path.parent")
def test_external_module_dot_import(self, parent: MagicMock) -> None:
parent.parts = ("", "dir", "outer", "inner", "module_files", "util")
import_from = astroid.extract_node("""from outer.inner import _file""")
with self.assertNoMessages():
self.checker.visit_importfrom(import_from)
@patch("pathlib.Path.parent")
def test_external_module_dot_import_outer_only(self, parent: MagicMock) -> None:
parent.parts = ("", "dir", "outer", "extensions")
import_from = astroid.extract_node("""from outer.inner import _file""")
with self.assertNoMessages():
self.checker.visit_importfrom(import_from)
@patch("pathlib.Path.parent")
def test_external_module(self, parent: MagicMock) -> None:
parent.parts = ("", "dir", "other")
import_from = astroid.extract_node("""from module import _file""")
msg = MessageTest(
msg_id="import-private-name",
node=import_from,
line=1,
col_offset=0,
end_line=1,
end_col_offset=24,
args=("object", "_file"),
confidence=HIGH,
)
with self.assertAddsMessages(msg):
self.checker.visit_importfrom(import_from)
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