"""Basic tests for os.popen()
Particularly useful for platforms that fake popen.
from test
.test_support
import TestSkipped
# Test that command-lines get down as we expect.
# 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
= '"' + python
+ '"' # quote embedded space for cmdline
def _do_test_commandline(cmdline
, expected
):
cmd
= '%s -c "import sys;print sys.argv" %s' % (python
, cmdline
)
got
= eval(data
)[1:] # strip off argv[0]
print "Error in popen commandline handling."
print " executed '%s', expected '%r', but got '%r'" \
% (cmdline
, expected
, got
)
_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"