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# Copyright (c) 2014-2018, 2020 Claudiu Popa <pcmanticore@gmail.com>
# Copyright (c) 2014 Google, Inc.
# Copyright (c) 2014 Michal Nowikowski <godfryd@gmail.com>
# Copyright (c) 2014 LOGILAB S.A. (Paris, FRANCE) <contact@logilab.fr>
# Copyright (c) 2015 Ionel Cristian Maries <contact@ionelmc.ro>
# Copyright (c) 2016 Łukasz Rogalski <rogalski.91@gmail.com>
# Copyright (c) 2016 Derek Gustafson <degustaf@gmail.com>
# Copyright (c) 2018 Lucas Cimon <lucas.cimon@gmail.com>
# Copyright (c) 2018 Ville Skyttä <ville.skytta@iki.fi>
# Copyright (c) 2019-2021 Pierre Sassoulas <pierre.sassoulas@gmail.com>
# Copyright (c) 2019 Mr. Senko <atodorov@mrsenko.com>
# Copyright (c) 2019 Hugo van Kemenade <hugovk@users.noreply.github.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) 2020 bernie gray <bfgray3@users.noreply.github.com>
# 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
"""Functional full-module tests for PyLint."""
import csv
import os
import sys
import pytest
from pylint import testutils
from pylint.testutils import UPDATE_FILE, UPDATE_OPTION
from pylint.utils import HAS_ISORT_5
# Notes:
# - for the purpose of this test, the confidence levels HIGH and UNDEFINED
# are treated as the same.
# TODOs
# - implement exhaustivity tests
# 'Wet finger' number of files that are reasonable to display by an IDE
# 'Wet finger' as in 'in my settings there are precisely this many'.
REASONABLY_DISPLAYABLE_VERTICALLY = 48
class LintModuleOutputUpdate(testutils.LintModuleTest):
"""If message files should be updated instead of checked."""
class TestDialect(csv.excel):
delimiter = ":"
lineterminator = "\n"
csv.register_dialect("test", TestDialect)
def _check_output_text(self, _, expected_output, actual_output):
if expected_output and expected_output == actual_output:
return
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
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())
def get_tests():
input_dir = os.path.join(os.path.dirname(os.path.abspath(__file__)), "functional")
suite = []
for dirpath, _, filenames in os.walk(input_dir):
if dirpath.endswith("__pycache__"):
continue
assert (
len(filenames) <= REASONABLY_DISPLAYABLE_VERTICALLY
), f"{dirpath} contain too much functional tests files."
for filename in filenames:
if filename != "__init__.py" and filename.endswith(".py"):
# isort 5 has slightly different rules as isort 4. Testing
# both would be hard: test with isort 5 only.
if filename == "wrong_import_order.py" and not HAS_ISORT_5:
continue
suite.append(testutils.FunctionalTestFile(dirpath, filename))
return suite
TESTS = get_tests()
TESTS_NAMES = [t.base for t in TESTS]
TEST_WITH_EXPECTED_DEPRECATION = [
"future_unicode_literals",
"anomalous_unicode_escape_py3",
]
@pytest.mark.parametrize("test_file", TESTS, ids=TESTS_NAMES)
def test_functional(test_file, recwarn, pytestconfig):
__tracebackhide__ = True # pylint: disable=unused-variable
if UPDATE_FILE.exists():
lint_test = LintModuleOutputUpdate(test_file, pytestconfig)
else:
lint_test = testutils.LintModuleTest(test_file, pytestconfig)
lint_test.setUp()
lint_test.runTest()
warning = None
try:
# Catch <unknown>:x: DeprecationWarning: invalid escape sequence
# so it's not shown during tests
warning = recwarn.pop()
except AssertionError:
pass
if warning is not None:
if (
test_file.base in TEST_WITH_EXPECTED_DEPRECATION
and sys.version_info.minor > 5
):
assert issubclass(warning.category, DeprecationWarning)
assert "invalid escape sequence" in str(warning.message)
if __name__ == "__main__":
if UPDATE_OPTION in sys.argv:
UPDATE_FILE.touch()
sys.argv.remove(UPDATE_OPTION)
try:
pytest.main(sys.argv)
finally:
if UPDATE_FILE.exists():
UPDATE_FILE.unlink()
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