'''
Tests for commands module
Nick Mathewson
'''
import unittest
import os, tempfile, re
from test.test_support import run_unittest, reap_children, import_module, \
check_warnings
# Silence Py3k warning
commands = import_module('commands', deprecated=True)
# The module says:
# "NB This only works (and is only relevant) for UNIX."
#
# Actually, getoutput should work on any platform with an os.popen, but
# I'll take the comment as given, and skip this suite.
if os.name != 'posix':
raise unittest.SkipTest('Not posix; skipping test_commands')
class CommandTests(unittest.TestCase):
def test_getoutput(self):
self.assertEqual(commands.getoutput('echo xyzzy'), 'xyzzy')
self.assertEqual(commands.getstatusoutput('echo xyzzy'), (0, 'xyzzy'))
# we use mkdtemp in the next line to create an empty directory
# under our exclusive control; from that, we can invent a pathname
# that we _know_ won't exist. This is guaranteed to fail.
dir = None
try:
dir = tempfile.mkdtemp()
name = os.path.join(dir, "foo")
status, output = commands.getstatusoutput('cat ' + name)
self.assertNotEqual(status, 0)
finally:
if dir is not None:
os.rmdir(dir)
def test_getstatus(self):
# This pattern should match 'ls -ld /.' on any posix
# system, however perversely configured. Even on systems
# (e.g., Cygwin) where user and group names can have spaces:
# drwxr-xr-x 15 Administ Domain U 4096 Aug 12 12:50 /
# drwxr-xr-x 15 Joe User My Group 4096 Aug 12 12:50 /
# Note that the first case above has a space in the group name
# while the second one has a space in both names.
# Special attributes supported:
# + = has ACLs
# @ = has Mac OS X extended attributes
# . = has a SELinux security context
pat = r'''d......... # It is a directory.
[.+@]? # It may have special attributes.
\s+\d+ # It has some number of links.
[^/]* # Skip user, group, size, and date.
/\. # and end with the name of the file.
'''
with check_warnings((".*commands.getstatus.. is deprecated",
DeprecationWarning)):
self.assertTrue(re.match(pat, commands.getstatus("/."), re.VERBOSE))
def test_main():
run_unittest(CommandTests)
reap_children()
if __name__ == "__main__":
test_main()