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#!/usr/bin/env python
# coding: utf-8
"""
This module tests that the scripts are all callable.
"""
from __future__ import absolute_import
import subprocess
import unittest
import sys
import errno
from abc import ABCMeta, abstractmethod
from .config import *
class CanScriptTest(unittest.TestCase):
__metaclass__ = ABCMeta
@classmethod
def setUpClass(cls):
# clean up the argument list so the call to the main() functions
# in test_does_not_crash() succeeds
sys.argv = sys.argv[:1]
def test_do_commands_exist(self):
"""This test calls each scripts once and verifies that the help
can be read without any other errors, like the script not being
found.
"""
for command in self._commands():
try:
subprocess.check_output(command.split(), stderr=subprocess.STDOUT)
except subprocess.CalledProcessError as e:
return_code = e.returncode
output = e.output
else:
return_code = 0
output = "-- NO OUTPUT --"
allowed = [0, errno.EINVAL]
self.assertIn(return_code, allowed,
'Calling "{}" failed (exit code was {} and not SUCCESS/0 or EINVAL/22):\n{}'
.format(command, return_code, output))
def test_does_not_crash(self):
# test import
module = self._import()
# test main method
with self.assertRaises(SystemExit) as cm:
module.main()
self.assertEqual(cm.exception.code, errno.EINVAL)
@abstractmethod
def _commands(self):
"""Returns an Iterable of commands that should "succeed", meaning they exit
normally (exit code 0) or with the exit code for invalid arguments: EINVAL/22.
"""
pass
@abstractmethod
def _import(self):
"""Returns the modue of the script that has a main() function.
"""
pass
class TestLoggerScript(CanScriptTest):
def _commands(self):
commands = [
"python -m can.logger --help",
"python scripts/can_logger.py --help"
]
if IS_UNIX:
commands += ["can_logger.py --help"]
return commands
def _import(self):
import can.logger as module
return module
class TestPlayerScript(CanScriptTest):
def _commands(self):
commands = [
"python -m can.player --help",
"python scripts/can_player.py --help"
]
if IS_UNIX:
commands += ["can_player.py --help"]
return commands
def _import(self):
import can.player as module
return module
# TODO add #390
# this excludes the base class from being executed as a test case itself
del(CanScriptTest)
if __name__ == '__main__':
unittest.main()
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