| #! /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. |
| def _do_test_commandline(cmdline, expected): |
| cmd = '"%s" -c "import sys;print sys.argv" %s' % (sys.executable, 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() |