/Lib/test/test_popen.py
http://unladen-swallow.googlecode.com/ · Python · 47 lines · 31 code · 6 blank · 10 comment · 2 complexity · 2a435d759eb5d2968bb6c6c6bc8cdc99 MD5 · raw file
- #! /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
- if ' ' in python:
- python = '"' + python + '"' # quote embedded space for cmdline
- 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()
- 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_main():
- test_support.run_unittest(PopenTest)
- if __name__ == "__main__":
- test_main()