#! /usr/bin/env python | |
"""Basic tests for os.popen() | |
Particularly useful for platforms that fake popen. | |
""" | |
import unittest | |
from test import test_support | |
import os, sys | |
# Test that command-lines get down as we expect. | |
# To do this we execute: | |
# python -c "import sys;print sys.argv" {rest_of_commandline} | |
# This results in Python being spawned and printing the sys.argv list. | |
# We can then eval() the result of this, and see what each argv was. | |
python = sys.executable | |
class PopenTest(unittest.TestCase): | |
def _do_test_commandline(self, cmdline, expected): | |
cmd = '%s -c "import sys;print sys.argv" %s' % (python, cmdline) | |
data = os.popen(cmd).read() + '\n' | |
got = eval(data)[1:] # strip off argv[0] | |
self.assertEqual(got, expected) | |
def test_popen(self): | |
self.assertRaises(TypeError, os.popen) | |
self._do_test_commandline( | |
"foo bar", | |
["foo", "bar"] | |
) | |
self._do_test_commandline( | |
'foo "spam and eggs" "silly walk"', | |
["foo", "spam and eggs", "silly walk"] | |
) | |
self._do_test_commandline( | |
'foo "a \\"quoted\\" arg" bar', | |
["foo", 'a "quoted" arg', "bar"] | |
) | |
test_support.reap_children() | |
def test_return_code(self): | |
self.assertEqual(os.popen("exit 0").close(), None) | |
if os.name == 'nt': | |
self.assertEqual(os.popen("exit 42").close(), 42) | |
else: | |
self.assertEqual(os.popen("exit 42").close(), 42 << 8) | |
def test_main(): | |
test_support.run_unittest(PopenTest) | |
if __name__ == "__main__": | |
test_main() |