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
|
# fixtures: Fixtures with cleanups for testing and convenience.
#
# Copyright (C) 2011, Martin Pool <mbp@sourcefrog.net>
#
# Licensed under either the Apache License, Version 2.0 or the BSD 3-clause
# license at the users choice. A copy of both licenses are available in the
# project source as Apache-2.0 and BSD. You may not use this file except in
# compliance with one of these two licences.
#
# Unless required by applicable law or agreed to in writing, software
# distributed under these licenses is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# license you chose for the specific language governing permissions and
# limitations under that license.
import signal
import time
import unittest
import testtools
from testtools.matchers import raises
import fixtures
def sample_timeout_passes():
with fixtures.Timeout(100, gentle=True):
pass # Timeout shouldn't fire
def sample_long_delay_with_gentle_timeout():
with fixtures.Timeout(1, gentle=True):
time.sleep(100) # Expected to be killed here.
def sample_long_delay_with_harsh_timeout():
with fixtures.Timeout(1, gentle=False):
time.sleep(100) # Expected to be killed here.
class TestTimeout(testtools.TestCase, fixtures.TestWithFixtures):
def requireUnix(self):
if getattr(signal, 'alarm', None) is None:
raise unittest.SkipTest("no alarm() function")
def test_timeout_passes(self):
# This can pass even on Windows - the test is skipped.
sample_timeout_passes()
def test_timeout_gentle(self):
self.requireUnix()
self.assertRaises(
fixtures.TimeoutException, sample_long_delay_with_gentle_timeout
)
def test_timeout_harsh(self):
self.requireUnix()
# This will normally kill the whole process, which would be
# inconvenient. Let's hook the alarm here so we can observe it.
class GotAlarm(Exception):
pass
def sigalrm_handler(signum, frame):
raise GotAlarm()
old_handler = signal.signal(signal.SIGALRM, sigalrm_handler)
self.addCleanup(signal.signal, signal.SIGALRM, old_handler)
self.assertThat(sample_long_delay_with_harsh_timeout, raises(GotAlarm))
|
