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'''
Tests for commands module
Nick Mathewson
'''
import unittest
import os, tempfile, re
from test.test_support import TestSkipped, run_unittest
from commands import *
# 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 TestSkipped('Not posix; skipping test_commands')
class CommandTests(unittest.TestCase):
def test_getoutput(self):
self.assertEquals(getoutput('echo xyzzy'), 'xyzzy')
self.assertEquals(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.
try:
dir = tempfile.mkdtemp()
name = os.path.join(dir, "foo")
status, output = getstatusoutput('cat ' + name)
self.assertNotEquals(status, 0)
finally:
os.rmdir(dir)
def test_getstatus(self):
# This pattern should match 'ls -ld /.' on any posix
# system, however perversely configured.
pat = r'''d......... # It is a directory.
\s+\d+ # It has some number of links.
\s+\w+\s+\w+ # It has a user and group, which may
# be named anything.
\s+\d+ # It has a size.
[^/]* # Skip the date.
/\. # and end with the name of the file.
'''
self.assert_(re.match(pat, getstatus("/."), re.VERBOSE))
def test_main():
run_unittest(CommandTests)
if __name__ == "__main__":
test_main()
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