mirror of https://github.com/python/cpython
101 lines
3.3 KiB
Python
101 lines
3.3 KiB
Python
import errno
|
|
import os
|
|
import select
|
|
import subprocess
|
|
import sys
|
|
import textwrap
|
|
import unittest
|
|
from test import support
|
|
|
|
@unittest.skipIf((sys.platform[:3]=='win'),
|
|
"can't easily test on this system")
|
|
class SelectTestCase(unittest.TestCase):
|
|
|
|
class Nope:
|
|
pass
|
|
|
|
class Almost:
|
|
def fileno(self):
|
|
return 'fileno'
|
|
|
|
def test_error_conditions(self):
|
|
self.assertRaises(TypeError, select.select, 1, 2, 3)
|
|
self.assertRaises(TypeError, select.select, [self.Nope()], [], [])
|
|
self.assertRaises(TypeError, select.select, [self.Almost()], [], [])
|
|
self.assertRaises(TypeError, select.select, [], [], [], "not a number")
|
|
self.assertRaises(ValueError, select.select, [], [], [], -1)
|
|
|
|
# Issue #12367: http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/155606
|
|
@unittest.skipIf(sys.platform.startswith('freebsd'),
|
|
'skip because of a FreeBSD bug: kern/155606')
|
|
def test_errno(self):
|
|
with open(__file__, 'rb') as fp:
|
|
fd = fp.fileno()
|
|
fp.close()
|
|
try:
|
|
select.select([fd], [], [], 0)
|
|
except OSError as err:
|
|
self.assertEqual(err.errno, errno.EBADF)
|
|
else:
|
|
self.fail("exception not raised")
|
|
|
|
def test_returned_list_identity(self):
|
|
# See issue #8329
|
|
r, w, x = select.select([], [], [], 1)
|
|
self.assertIsNot(r, w)
|
|
self.assertIsNot(r, x)
|
|
self.assertIsNot(w, x)
|
|
|
|
@unittest.skipUnless(hasattr(os, 'popen'), "need os.popen()")
|
|
def test_select(self):
|
|
code = textwrap.dedent('''
|
|
import time
|
|
for i in range(10):
|
|
print("testing...", flush=True)
|
|
time.sleep(0.050)
|
|
''')
|
|
cmd = [sys.executable, '-I', '-c', code]
|
|
with subprocess.Popen(cmd, stdout=subprocess.PIPE) as proc:
|
|
pipe = proc.stdout
|
|
for timeout in (0, 1, 2, 4, 8, 16) + (None,)*10:
|
|
if support.verbose:
|
|
print(f'timeout = {timeout}')
|
|
rfd, wfd, xfd = select.select([pipe], [], [], timeout)
|
|
self.assertEqual(wfd, [])
|
|
self.assertEqual(xfd, [])
|
|
if not rfd:
|
|
continue
|
|
if rfd == [pipe]:
|
|
line = pipe.readline()
|
|
if support.verbose:
|
|
print(repr(line))
|
|
if not line:
|
|
if support.verbose:
|
|
print('EOF')
|
|
break
|
|
continue
|
|
self.fail('Unexpected return values from select():',
|
|
rfd, wfd, xfd)
|
|
|
|
# Issue 16230: Crash on select resized list
|
|
def test_select_mutated(self):
|
|
a = []
|
|
class F:
|
|
def fileno(self):
|
|
del a[-1]
|
|
return sys.__stdout__.fileno()
|
|
a[:] = [F()] * 10
|
|
self.assertEqual(select.select([], a, []), ([], a[:5], []))
|
|
|
|
def test_disallow_instantiation(self):
|
|
support.check_disallow_instantiation(self, type(select.poll()))
|
|
|
|
if hasattr(select, 'devpoll'):
|
|
support.check_disallow_instantiation(self, type(select.devpoll()))
|
|
|
|
def tearDownModule():
|
|
support.reap_children()
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|