| # Copyright (c) 2016 Alexander Todorov <[email protected]> |
| # Copyright (c) 2016 Łukasz Rogalski <[email protected]> |
| # Copyright (c) 2017-2018, 2020 Claudiu Popa <[email protected]> |
| # Copyright (c) 2019-2020 Pierre Sassoulas <[email protected]> |
| # Copyright (c) 2019 Ashley Whetter <[email protected]> |
| # Copyright (c) 2020 Anthony Sottile <[email protected]> |
| |
| # 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 |
| |
| """Tests for the pylint checker in :mod:`pylint.extensions.emptystring""" |
| |
| import os |
| import unittest |
| |
| from pylint import checkers |
| from pylint.extensions.comparetozero import CompareToZeroChecker |
| from pylint.lint import PyLinter |
| from pylint.reporters import BaseReporter |
| |
| |
| class CompareToZeroTestReporter(BaseReporter): |
| def handle_message(self, msg): |
| self.messages.append(msg) |
| |
| def on_set_current_module(self, module, filepath): |
| self.messages = [] |
| |
| def _display(self, layout): |
| pass |
| |
| |
| class CompareToZeroUsedTC(unittest.TestCase): |
| @classmethod |
| def setUpClass(cls): |
| cls._linter = PyLinter() |
| cls._linter.set_reporter(CompareToZeroTestReporter()) |
| checkers.initialize(cls._linter) |
| cls._linter.register_checker(CompareToZeroChecker(cls._linter)) |
| cls._linter.disable("I") |
| |
| def test_comparetozero_message(self): |
| elif_test = os.path.join( |
| os.path.dirname(os.path.abspath(__file__)), "data", "compare_to_zero.py" |
| ) |
| self._linter.check([elif_test]) |
| msgs = self._linter.reporter.messages |
| self.assertEqual(len(msgs), 4) |
| for msg in msgs: |
| self.assertEqual(msg.symbol, "compare-to-zero") |
| self.assertEqual(msg.msg, "Avoid comparisons to zero") |
| self.assertEqual(msgs[0].line, 6) |
| self.assertEqual(msgs[1].line, 9) |
| self.assertEqual(msgs[2].line, 12) |
| self.assertEqual(msgs[3].line, 15) |
