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- #! /usr/bin/env python
- """Basic tests for os.popen()
-
- Particularly useful for platforms that fake popen.
- """
-
- import os
- import sys
- from test.test_support import TestSkipped
- from os import popen
-
- # 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
- def _do_test_commandline(cmdline, expected):
- cmd = '%s -c "import sys;print sys.argv" %s' % (python, cmdline)
- data = popen(cmd).read()
- got = eval(data)[1:] # strip off argv[0]
- if got != expected:
- print "Error in popen commandline handling."
- print " executed '%s', expected '%r', but got '%r'" \
- % (cmdline, expected, got)
-
- def _test_commandline():
- _do_test_commandline("foo bar", ["foo", "bar"])
- _do_test_commandline('foo "spam and eggs" "silly walk"', ["foo", "spam and eggs", "silly walk"])
- _do_test_commandline('foo "a \\"quoted\\" arg" bar', ["foo", 'a "quoted" arg', "bar"])
- print "popen seemed to process the command-line correctly"
-
- def main():
- print "Test popen:"
- _test_commandline()
-
- main()
-