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# Licensed under the Apache License: http://www.apache.org/licenses/LICENSE-2.0
# For details: https://github.com/nedbat/coveragepy/blob/master/NOTICE.txt
"""
Pytest auto configuration.
This module is run automatically by pytest, to define and enable fixtures.
"""
import os
import sys
import warnings
import pytest
from coverage import env
# Pytest will rewrite assertions in test modules, but not elsewhere.
# This tells pytest to also rewrite assertions in coveragetest.py.
pytest.register_assert_rewrite("tests.coveragetest")
pytest.register_assert_rewrite("tests.helpers")
# Pytest can take additional options:
# $set_env.py: PYTEST_ADDOPTS - Extra arguments to pytest.
@pytest.fixture(autouse=True)
def set_warnings():
"""Enable DeprecationWarnings during all tests."""
warnings.simplefilter("default")
warnings.simplefilter("once", DeprecationWarning)
# Warnings to suppress:
# How come these warnings are successfully suppressed here, but not in setup.cfg??
# setuptools/py33compat.py:54: DeprecationWarning: The value of convert_charrefs will become
# True in 3.5. You are encouraged to set the value explicitly.
# unescape = getattr(html, 'unescape', html_parser.HTMLParser().unescape)
warnings.filterwarnings(
"ignore",
category=DeprecationWarning,
message=r"The value of convert_charrefs will become True in 3.5.",
)
warnings.filterwarnings(
"ignore",
category=DeprecationWarning,
message=r".* instead of inspect.getfullargspec",
)
# <frozen importlib._bootstrap>:681:
# ImportWarning: VendorImporter.exec_module() not found; falling back to load_module()
warnings.filterwarnings(
"ignore",
category=ImportWarning,
message=r".*exec_module\(\) not found; falling back to load_module\(\)",
)
if env.PYPY3:
# pypy3 warns about unclosed files a lot.
warnings.filterwarnings("ignore", r".*unclosed file", category=ResourceWarning)
@pytest.fixture(autouse=True)
def reset_sys_path():
"""Clean up sys.path changes around every test."""
sys_path = list(sys.path)
yield
sys.path[:] = sys_path
@pytest.fixture(autouse=True)
def fix_xdist_sys_path():
"""Prevent xdist from polluting the Python path.
We run tests that care a lot about the contents of sys.path. Pytest-xdist
changes sys.path, so running with xdist, vs without xdist, sets sys.path
differently. With xdist, sys.path[1] is an empty string, without xdist,
it's the virtualenv bin directory. We don't want the empty string, so
clobber that entry.
See: https://github.com/pytest-dev/pytest-xdist/issues/376
"""
if os.environ.get('PYTEST_XDIST_WORKER', ''): # pragma: part covered
# We are running in an xdist worker.
if sys.path[1] == '':
# xdist has set sys.path[1] to ''. Clobber it.
del sys.path[1]
# Also, don't let it sneak stuff in via PYTHONPATH.
try:
del os.environ['PYTHONPATH']
except KeyError:
pass
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