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EDIT :: lint_module_output_update.py

# 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 # Copyright (c) https://github.com/PyCQA/pylint/blob/main/CONTRIBUTORS.txt from __future__ import annotations import csv import os from _pytest.config import Config from pylint.constants import PY38_PLUS from pylint.testutils.functional.test_file import FunctionalTestFile from pylint.testutils.lint_module_test import LintModuleTest, MessageCounter from pylint.testutils.output_line import OutputLine class LintModuleOutputUpdate(LintModuleTest): """Class to be used if expected output files should be updated instead of checked. """ class TestDialect(csv.excel): """Dialect used by the csv writer.""" delimiter = ":" lineterminator = "\n" csv.register_dialect("test", TestDialect) def __init__( self, test_file: FunctionalTestFile, config: Config | None = None ) -> None: if not PY38_PLUS: raise RuntimeError( "You need at least python 3.8 for the functional test updater to work. " "This is because python 3.8 includes a new AST parser, which amongst others " "returns the end line and end column of most nodes." ) super().__init__(test_file, config) def _check_output_text( self, _: MessageCounter, expected_output: list[OutputLine], actual_output: list[OutputLine], ) -> None: """Overwrite or remove the expected output file based on actual output.""" # Remove the file if no output is actually expected and a file exists if not expected_output and not actual_output: if os.path.exists(self._test_file.expected_output): os.remove(self._test_file.expected_output) return # Write file with expected output with open(self._test_file.expected_output, "w", encoding="utf-8") as f: writer = csv.writer(f, dialect="test") for line in actual_output: writer.writerow(line.to_csv())

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