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# Copyright (C) 2017-2018, Benjamin Drung <bdrung@debian.org>
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
"""Run flake8 check."""
import subprocess
import sys
import unittest
from . import get_source_files, unittest_verbosity
class Flake8TestCase(unittest.TestCase):
"""
This unittest class provides a test that runs the flake8 code
checker (which combines pycodestyle and pyflakes) on the Python
source code. The list of source files is provided by the
get_source_files() function.
"""
def test_flake8(self) -> None:
"""Test: Run flake8 on Python source code."""
cmd = [
sys.executable,
"-m",
"flake8",
"--ignore=E203,W503",
"--max-line-length=88",
] + get_source_files()
if unittest_verbosity() >= 2:
sys.stderr.write(f"Running following command:\n{' '.join(cmd)}\n")
process = subprocess.run(cmd, capture_output=True, check=False, text=True)
if process.returncode != 0: # pragma: no cover
msgs = []
if process.stderr:
msgs.append(
f"flake8 exited with code {process.returncode} and has"
f" unexpected output on stderr:\n{process.stderr.rstrip()}"
)
if process.stdout:
msgs.append(f"flake8 found issues:\n{process.stdout.rstrip()}")
if not msgs:
msgs.append(
f"flake8 exited with code {process.returncode} "
"and has no output on stdout or stderr."
)
self.fail("\n".join(msgs))
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