Current File : //usr/lib/python3/dist-packages/distro_info_test/test_help.py
# test_help.py - Ensure scripts can run --help.
#
# Copyright (C) 2010, Stefano Rivera <stefanor@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.
import fcntl
import os
import select
import signal
import subprocess
import time
import setup
from distro_info_test import unittest
TIMEOUT = 5
class HelpTestCase(unittest.TestCase):
@classmethod
def populate(cls):
for script in setup.SCRIPTS:
setattr(cls, 'test_' + script, cls.make_help_tester(script))
@classmethod
def make_help_tester(cls, script):
def tester(self):
null = open('/dev/null', 'r')
process = subprocess.Popen(['./' + script, '--help'],
close_fds=True, stdin=null,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
started = time.time()
out = []
fds = [process.stdout.fileno(), process.stderr.fileno()]
for file_descriptor in fds:
fcntl.fcntl(file_descriptor, fcntl.F_SETFL,
fcntl.fcntl(file_descriptor, fcntl.F_GETFL) | os.O_NONBLOCK)
while time.time() - started < TIMEOUT:
for file_descriptor in select.select(fds, [], fds, TIMEOUT)[0]:
out.append(os.read(file_descriptor, 1024))
if process.poll() is not None:
break
if process.poll() is None:
os.kill(process.pid, signal.SIGTERM)
time.sleep(1)
if process.poll() is None:
os.kill(process.pid, signal.SIGKILL)
null.close()
self.assertEqual(process.poll(), 0,
"%s failed to return usage within %i seconds.\n"
"Output:\n%s"
% (script, TIMEOUT, ''.encode('ascii').join(out)))
process.stdout.close()
process.stderr.close()
return tester
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