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
|
# ###################################################
# Copyright (C) 2008-2017 The Unknown Horizons Team
# team@unknown-horizons.org
# This file is part of Unknown Horizons.
#
# Unknown Horizons is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the
# Free Software Foundation, Inc.,
# 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
# ###################################################
import functools
import signal
from pytest import skip
# check if SIGALRM is supported, this is not the case on Windows
# we might provide an alternative later, but for now, this will do
try:
from signal import SIGALRM
SUPPORTED = True
except ImportError:
SUPPORTED = False
class Timer:
"""
Example
def handler(signum, frame):
print 'Timer triggered'
t = Timer(handler)
# handler will be called after 2 seconds
t.start(2)
# if 2 seconds have not passed, this will stop the timer
t.stop()
Note: if SIGALRM is not supported, this class does nothing
"""
def __init__(self, handler):
"""Install the passed function as handler that is called when the signal
triggers.
"""
if not SUPPORTED:
return
signal.signal(signal.SIGALRM, handler)
def start(self, timeout):
"""Start the timer. A timeout of 0 means that the signal will never trigger."""
if not SUPPORTED or timeout == 0:
return
signal.alarm(timeout)
@classmethod
def stop(cls):
"""Stop the timer. This can be called on both the instance and class (when you
have no access to the instance for example).
"""
if not SUPPORTED:
return
signal.alarm(0)
def mark_flaky(func):
"""
Ignore test failures marked with this decorator. We have some tests that sometimes fail
unfortunately.
"""
@functools.wraps(func)
def wrapped(*args, **kwargs):
try:
func(*args, **kwargs)
except Exception:
skip()
return wrapped
|
