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hypothesis-python/tests/pytest/test_no_plugin_side_effects.py
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# This file is part of Hypothesis, which may be found at | ||
# https://github.com/HypothesisWorks/hypothesis/ | ||
# | ||
# Most of this work is copyright (C) 2013-2021 David R. MacIver | ||
# (david@drmaciver.com), but it contains contributions by others. See | ||
# CONTRIBUTING.rst for a full list of people who may hold copyright, and | ||
# consult the git log if you need to determine who owns an individual | ||
# contribution. | ||
# | ||
# This Source Code Form is subject to the terms of the Mozilla Public License, | ||
# v. 2.0. If a copy of the MPL was not distributed with this file, You can | ||
# obtain one at https://mozilla.org/MPL/2.0/. | ||
# | ||
# END HEADER | ||
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import os | ||
import subprocess | ||
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DOES_NOT_WRITE_CHARMAP = """ | ||
from hypothesis import given, strategies as st | ||
def test(): | ||
pass | ||
""" | ||
WRITES_CHARMAP = """ | ||
from hypothesis import given, strategies as st | ||
@given(st.text()) | ||
def test(s): | ||
pass | ||
""" | ||
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def names(path): | ||
return {p.name for p in path.iterdir() if "cache" not in p.name} | ||
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def test_does_not_create_dir_unless_actually_using_hypothesis(tmp_path): | ||
pyfile = tmp_path / "test.py" | ||
env = {**os.environ, "HYPOTHESIS_STORAGE_DIRECTORY": ".hypothesis"} | ||
expected = {"test.py", ".pytest_cache"} | ||
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pyfile.write_text(DOES_NOT_WRITE_CHARMAP) | ||
subprocess.check_call(["pytest", "test.py"], env=env, cwd=tmp_path) | ||
assert names(tmp_path) == {"test.py"} | ||
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pyfile.write_text(WRITES_CHARMAP) | ||
subprocess.check_call(["pytest", "test.py"], env=env, cwd=tmp_path) | ||
assert names(tmp_path) == {"test.py", ".hypothesis"} |