/usr/lib/python3.5/test/test_devpoll.py is in libpython3.5-testsuite 3.5.1-10.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 | # Test case for the select.devpoll() function
# Initial tests are copied as is from "test_poll.py"
import os
import random
import select
import sys
import unittest
from test.support import TESTFN, run_unittest, cpython_only
if not hasattr(select, 'devpoll') :
raise unittest.SkipTest('test works only on Solaris OS family')
def find_ready_matching(ready, flag):
match = []
for fd, mode in ready:
if mode & flag:
match.append(fd)
return match
class DevPollTests(unittest.TestCase):
def test_devpoll1(self):
# Basic functional test of poll object
# Create a bunch of pipe and test that poll works with them.
p = select.devpoll()
NUM_PIPES = 12
MSG = b" This is a test."
MSG_LEN = len(MSG)
readers = []
writers = []
r2w = {}
w2r = {}
for i in range(NUM_PIPES):
rd, wr = os.pipe()
p.register(rd)
p.modify(rd, select.POLLIN)
p.register(wr, select.POLLOUT)
readers.append(rd)
writers.append(wr)
r2w[rd] = wr
w2r[wr] = rd
bufs = []
while writers:
ready = p.poll()
ready_writers = find_ready_matching(ready, select.POLLOUT)
if not ready_writers:
self.fail("no pipes ready for writing")
wr = random.choice(ready_writers)
os.write(wr, MSG)
ready = p.poll()
ready_readers = find_ready_matching(ready, select.POLLIN)
if not ready_readers:
self.fail("no pipes ready for reading")
self.assertEqual([w2r[wr]], ready_readers)
rd = ready_readers[0]
buf = os.read(rd, MSG_LEN)
self.assertEqual(len(buf), MSG_LEN)
bufs.append(buf)
os.close(r2w[rd]) ; os.close(rd)
p.unregister(r2w[rd])
p.unregister(rd)
writers.remove(r2w[rd])
self.assertEqual(bufs, [MSG] * NUM_PIPES)
def test_timeout_overflow(self):
pollster = select.devpoll()
w, r = os.pipe()
pollster.register(w)
pollster.poll(-1)
self.assertRaises(OverflowError, pollster.poll, -2)
self.assertRaises(OverflowError, pollster.poll, -1 << 31)
self.assertRaises(OverflowError, pollster.poll, -1 << 64)
pollster.poll(0)
pollster.poll(1)
pollster.poll(1 << 30)
self.assertRaises(OverflowError, pollster.poll, 1 << 31)
self.assertRaises(OverflowError, pollster.poll, 1 << 63)
self.assertRaises(OverflowError, pollster.poll, 1 << 64)
def test_close(self):
open_file = open(__file__, "rb")
self.addCleanup(open_file.close)
fd = open_file.fileno()
devpoll = select.devpoll()
# test fileno() method and closed attribute
self.assertIsInstance(devpoll.fileno(), int)
self.assertFalse(devpoll.closed)
# test close()
devpoll.close()
self.assertTrue(devpoll.closed)
self.assertRaises(ValueError, devpoll.fileno)
# close() can be called more than once
devpoll.close()
# operations must fail with ValueError("I/O operation on closed ...")
self.assertRaises(ValueError, devpoll.modify, fd, select.POLLIN)
self.assertRaises(ValueError, devpoll.poll)
self.assertRaises(ValueError, devpoll.register, fd, fd, select.POLLIN)
self.assertRaises(ValueError, devpoll.unregister, fd)
def test_fd_non_inheritable(self):
devpoll = select.devpoll()
self.addCleanup(devpoll.close)
self.assertEqual(os.get_inheritable(devpoll.fileno()), False)
def test_events_mask_overflow(self):
pollster = select.devpoll()
w, r = os.pipe()
pollster.register(w)
# Issue #17919
self.assertRaises(OverflowError, pollster.register, 0, -1)
self.assertRaises(OverflowError, pollster.register, 0, 1 << 64)
self.assertRaises(OverflowError, pollster.modify, 1, -1)
self.assertRaises(OverflowError, pollster.modify, 1, 1 << 64)
@cpython_only
def test_events_mask_overflow_c_limits(self):
from _testcapi import USHRT_MAX
pollster = select.devpoll()
w, r = os.pipe()
pollster.register(w)
# Issue #17919
self.assertRaises(OverflowError, pollster.register, 0, USHRT_MAX + 1)
self.assertRaises(OverflowError, pollster.modify, 1, USHRT_MAX + 1)
def test_main():
run_unittest(DevPollTests)
if __name__ == '__main__':
test_main()
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