0001 #! /usr/bin/env python 0002 """Basic tests for os.popen() 0003 0004 Particularly useful for platforms that fake popen. 0005 """ 0006 0007 import os 0008 import sys 0009 from test.test_support import TestSkipped 0010 from os import popen 0011 0012 # Test that command-lines get down as we expect. 0013 # To do this we execute: 0014 # python -c "import sys;print sys.argv" {rest_of_commandline} 0015 # This results in Python being spawned and printing the sys.argv list. 0016 # We can then eval() the result of this, and see what each argv was. 0017 python = sys.executable 0018 if ' ' in python: 0019 python = '"' + python + '"' # quote embedded space for cmdline 0020 def _do_test_commandline(cmdline, expected): 0021 cmd = '%s -c "import sys;print sys.argv" %s' % (python, cmdline) 0022 data = popen(cmd).read() 0023 got = eval(data)[1:] # strip off argv[0] 0024 if got != expected: 0025 print "Error in popen commandline handling." 0026 print " executed '%s', expected '%r', but got '%r'" \ 0027 % (cmdline, expected, got) 0028 0029 def _test_commandline(): 0030 _do_test_commandline("foo bar", ["foo", "bar"]) 0031 _do_test_commandline('foo "spam and eggs" "silly walk"', ["foo", "spam and eggs", "silly walk"]) 0032 _do_test_commandline('foo "a \\"quoted\\" arg" bar', ["foo", 'a "quoted" arg', "bar"]) 0033 print "popen seemed to process the command-line correctly" 0034 0035 def main(): 0036 print "Test popen:" 0037 _test_commandline() 0038 0039 main() 0040
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