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# Copyright (c) 2016 Łukasz Rogalski <rogalski.91@gmail.com>
# Copyright (c) 2016 Alexander Todorov <atodorov@otb.bg>
# Copyright (c) 2017-2018, 2020 Claudiu Popa <pcmanticore@gmail.com>
# Copyright (c) 2017 Derek Gustafson <degustaf@gmail.com>
# Copyright (c) 2019-2021 Pierre Sassoulas <pierre.sassoulas@gmail.com>
# Copyright (c) 2019 Ashley Whetter <ashley@awhetter.co.uk>
# Copyright (c) 2020 hippo91 <guillaume.peillex@gmail.com>
# Copyright (c) 2020 Damien Baty <damien.baty@polyconseil.fr>
# Copyright (c) 2020 Anthony Sottile <asottile@umich.edu>
# Copyright (c) 2021 Daniël van Noord <13665637+DanielNoord@users.noreply.github.com>
# Copyright (c) 2021 Marc Mueller <30130371+cdce8p@users.noreply.github.com>
# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
# For details: https://github.com/PyCQA/pylint/blob/main/LICENSE
"""Tests for the pylint checker in :mod:`pylint.extensions.emptystring
"""
from os import path as osp
import pytest
from pylint.extensions.emptystring import CompareToEmptyStringChecker
from pylint.lint.pylinter import PyLinter
@pytest.fixture(scope="module")
def checker():
return CompareToEmptyStringChecker
@pytest.fixture(scope="module")
def disable():
return ["I"]
def test_emptystring_message(linter: PyLinter) -> None:
elif_test = osp.join(
osp.dirname(osp.abspath(__file__)), "data", "empty_string_comparison.py"
)
linter.check([elif_test])
msgs = linter.reporter.messages
expected_lineno = [6, 9, 12, 15]
assert len(msgs) == len(expected_lineno)
for msg, lineno in zip(msgs, expected_lineno):
assert msg.symbol == "compare-to-empty-string"
assert msg.msg == "Avoid comparisons to empty string"
assert msg.line == lineno
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