1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
|
#! /usr/bin/env python
"""Test script for popen2.py"""
import warnings
warnings.filterwarnings("ignore", ".*popen2 module is deprecated.*",
DeprecationWarning)
warnings.filterwarnings("ignore", "os\.popen. is deprecated.*",
DeprecationWarning)
import os
import sys
import unittest
import popen2
from test.test_support import run_unittest, reap_children, is_jython
if sys.platform[:4] == 'beos' or sys.platform[:6] == 'atheos':
# Locks get messed up or something. Generally we're supposed
# to avoid mixing "posix" fork & exec with native threads, and
# they may be right about that after all.
raise unittest.SkipTest("popen2() doesn't work on " + sys.platform)
# if we don't have os.popen, check that
# we have os.fork. if not, skip the test
# (by raising an ImportError)
try:
from os import popen
del popen
except ImportError:
from os import fork
del fork
class Popen2Test(unittest.TestCase):
cmd = "cat"
if os.name == "nt" or (os.name == "java" and os._name == "nt"):
cmd = "more"
teststr = "ab cd\n"
# "more" doesn't act the same way across Windows flavors,
# sometimes adding an extra newline at the start or the
# end. So we strip whitespace off both ends for comparison.
expected = teststr.strip()
def setUp(self):
popen2._cleanup()
# When the test runs, there shouldn't be any open pipes
self.assertFalse(popen2._active, "Active pipes when test starts" +
repr([c.cmd for c in popen2._active]))
def tearDown(self):
for inst in popen2._active:
inst.wait()
popen2._cleanup()
self.assertFalse(popen2._active, "popen2._active not empty")
# The os.popen*() API delegates to the subprocess module (on Unix)
import subprocess
for inst in subprocess._active:
inst.wait()
subprocess._cleanup()
self.assertFalse(subprocess._active, "subprocess._active not empty")
reap_children()
@classmethod
def tearDownClass(cls):
if is_jython:
# GC is not immediate, so if Popen.__del__ may be delayed.
# Try to force Popen.__del__ within scope of test.
from test_weakref import extra_collect
extra_collect()
def validate_output(self, teststr, expected_out, r, w, e=None):
w.write(teststr)
w.close()
got = r.read()
self.assertEqual(expected_out, got.strip(), "wrote %r read %r" %
(teststr, got))
if e is not None:
got = e.read()
self.assertFalse(got, "unexpected %r on stderr" % got)
def test_popen2(self):
r, w = popen2.popen2(self.cmd)
self.validate_output(self.teststr, self.expected, r, w)
def test_popen3(self):
if os.name == 'posix':
r, w, e = popen2.popen3([self.cmd])
self.validate_output(self.teststr, self.expected, r, w, e)
r, w, e = popen2.popen3(self.cmd)
self.validate_output(self.teststr, self.expected, r, w, e)
def test_os_popen2(self):
# same test as test_popen2(), but using the os.popen*() API
if os.name == 'posix':
w, r = os.popen2([self.cmd])
self.validate_output(self.teststr, self.expected, r, w)
w, r = os.popen2(["echo", self.teststr])
got = r.read()
self.assertEqual(got, self.teststr + "\n")
w, r = os.popen2(self.cmd)
self.validate_output(self.teststr, self.expected, r, w)
def test_os_popen3(self):
# same test as test_popen3(), but using the os.popen*() API
if os.name == 'posix':
w, r, e = os.popen3([self.cmd])
self.validate_output(self.teststr, self.expected, r, w, e)
w, r, e = os.popen3(["echo", self.teststr])
got = r.read()
self.assertEqual(got, self.teststr + "\n")
got = e.read()
self.assertFalse(got, "unexpected %r on stderr" % got)
w, r, e = os.popen3(self.cmd)
self.validate_output(self.teststr, self.expected, r, w, e)
def test_os_popen4(self):
if os.name == 'posix':
w, r = os.popen4([self.cmd])
self.validate_output(self.teststr, self.expected, r, w)
w, r = os.popen4(["echo", self.teststr])
got = r.read()
self.assertEqual(got, self.teststr + "\n")
w, r = os.popen4(self.cmd)
self.validate_output(self.teststr, self.expected, r, w)
def test_main():
run_unittest(Popen2Test)
if __name__ == "__main__":
test_main()
|
