mirror of https://github.com/python/cpython
70 lines
2.1 KiB
Python
70 lines
2.1 KiB
Python
"""Basic tests for os.popen()
|
|
|
|
Particularly useful for platforms that fake popen.
|
|
"""
|
|
|
|
import unittest
|
|
from test import support
|
|
import os, sys
|
|
|
|
if not hasattr(os, 'popen'):
|
|
raise unittest.SkipTest("need os.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
|
|
|
|
class PopenTest(unittest.TestCase):
|
|
|
|
def _do_test_commandline(self, cmdline, expected):
|
|
cmd = '%s -c "import sys; print(sys.argv)" %s'
|
|
cmd = cmd % (python, cmdline)
|
|
with os.popen(cmd) as p:
|
|
data = p.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"]
|
|
)
|
|
support.reap_children()
|
|
|
|
def test_return_code(self):
|
|
self.assertEqual(os.popen("exit 0").close(), None)
|
|
status = os.popen("exit 42").close()
|
|
if os.name == 'nt':
|
|
self.assertEqual(status, 42)
|
|
else:
|
|
self.assertEqual(os.waitstatus_to_exitcode(status), 42)
|
|
|
|
def test_contextmanager(self):
|
|
with os.popen("echo hello") as f:
|
|
self.assertEqual(f.read(), "hello\n")
|
|
|
|
def test_iterating(self):
|
|
with os.popen("echo hello") as f:
|
|
self.assertEqual(list(f), ["hello\n"])
|
|
|
|
def test_keywords(self):
|
|
with os.popen(cmd="exit 0", mode="w", buffering=-1):
|
|
pass
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|