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ORPA-pyOpenRPA/Resources/WPy32-3720/python-3.7.2/Lib/site-packages/joblib/testing.py

80 lines
2.2 KiB

"""
Helper for testing.
"""
import sys
import warnings
import os.path
import re
import subprocess
import threading
import pytest
import _pytest
from joblib._compat import PY3_OR_LATER
raises = pytest.raises
warns = pytest.warns
SkipTest = _pytest.runner.Skipped
skipif = pytest.mark.skipif
fixture = pytest.fixture
parametrize = pytest.mark.parametrize
timeout = pytest.mark.timeout
def warnings_to_stdout():
""" Redirect all warnings to stdout.
"""
showwarning_orig = warnings.showwarning
def showwarning(msg, cat, fname, lno, file=None, line=0):
showwarning_orig(msg, cat, os.path.basename(fname), line, sys.stdout)
warnings.showwarning = showwarning
# warnings.simplefilter('always')
def check_subprocess_call(cmd, timeout=5, stdout_regex=None,
stderr_regex=None):
"""Runs a command in a subprocess with timeout in seconds.
Also checks returncode is zero, stdout if stdout_regex is set, and
stderr if stderr_regex is set.
"""
proc = subprocess.Popen(cmd, stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
def kill_process():
warnings.warn("Timeout running {}".format(cmd))
proc.kill()
timer = threading.Timer(timeout, kill_process)
try:
timer.start()
stdout, stderr = proc.communicate()
if PY3_OR_LATER:
stdout, stderr = stdout.decode(), stderr.decode()
if proc.returncode != 0:
message = (
'Non-zero return code: {}.\nStdout:\n{}\n'
'Stderr:\n{}').format(
proc.returncode, stdout, stderr)
raise ValueError(message)
if (stdout_regex is not None and
not re.search(stdout_regex, stdout)):
raise ValueError(
"Unexpected stdout: {!r} does not match:\n{!r}".format(
stdout_regex, stdout))
if (stderr_regex is not None and
not re.search(stderr_regex, stderr)):
raise ValueError(
"Unexpected stderr: {!r} does not match:\n{!r}".format(
stderr_regex, stderr))
finally:
timer.cancel()