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# Copyright (C) 2010, Stefano Rivera <stefanor@debian.org>
# 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.
"""test_pylint.py - Run pylint"""
import os
import re
import subprocess
import sys
import unittest
import pylint
from debian.debian_support import Version
from . import get_source_files, unittest_verbosity
CONFIG = os.path.join(os.path.dirname(__file__), "pylint.conf")
def check_pylint_version():
return Version(pylint.__version__) >= Version('2.4.4')
@unittest.skipIf(not check_pylint_version(), "pylint version not supported")
class PylintTestCase(unittest.TestCase):
"""
This unittest class provides a test that runs the pylint code check
on the Python source code. The list of source files is provided by
the get_source_files() function and pylint is purely configured via
a config file.
"""
def test_pylint(self):
"""Test: Run pylint on Python source code"""
cmd = [sys.executable, "-m", "pylint", "--rcfile=" + CONFIG, "--"] + get_source_files()
if unittest_verbosity() >= 2:
sys.stderr.write("Running following command:\n{}\n".format(" ".join(cmd)))
process = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE,
close_fds=True)
out, err = process.communicate()
if process.returncode != 0: # pragma: no cover
# Strip trailing summary (introduced in pylint 1.7). This summary might look like:
#
# ------------------------------------
# Your code has been rated at 10.00/10
#
out = re.sub("^(-+|Your code has been rated at .*)$", "", out.decode(),
flags=re.MULTILINE).rstrip()
# Strip logging of used config file (introduced in pylint 1.8)
err = re.sub("^Using config file .*\n", "", err.decode()).rstrip()
msgs = []
if err:
msgs.append("pylint exited with code {} and has unexpected output on stderr:\n{}"
.format(process.returncode, err))
if out:
msgs.append("pylint found issues:\n{}".format(out))
if not msgs:
msgs.append("pylint exited with code {} and has no output on stdout or stderr."
.format(process.returncode))
self.fail("\n".join(msgs))
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