blob: 55657bdae98ebf4823eb232fe6f0d02e3751d002 (
plain)
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
|
from __future__ import print_function
import os
from functools import wraps
from zmq.tests import BaseZMQTestCase
from zmq.utils.win32 import allow_interrupt
def count_calls(f):
@wraps(f)
def _(*args, **kwds):
try:
return f(*args, **kwds)
finally:
_.__calls__ += 1
_.__calls__ = 0
return _
class TestWindowsConsoleControlHandler(BaseZMQTestCase):
def test_handler(self):
@count_calls
def interrupt_polling():
print('Caught CTRL-C!')
if os.name == 'nt':
from ctypes import windll
from ctypes.wintypes import BOOL, DWORD
kernel32 = windll.LoadLibrary('kernel32')
# <http://msdn.microsoft.com/en-us/library/ms683155.aspx>
GenerateConsoleCtrlEvent = kernel32.GenerateConsoleCtrlEvent
GenerateConsoleCtrlEvent.argtypes = (DWORD, DWORD)
GenerateConsoleCtrlEvent.restype = BOOL
try:
# Simulate CTRL-C event while handler is active.
with allow_interrupt(interrupt_polling):
result = GenerateConsoleCtrlEvent(0, 0)
if result == 0:
raise WindowsError
except KeyboardInterrupt:
pass
else:
self.fail('Expecting `KeyboardInterrupt` exception!')
# Make sure our handler was called.
self.assertEqual(interrupt_polling.__calls__, 1)
else:
# On non-Windows systems, this utility is just a no-op!
with allow_interrupt(interrupt_polling):
pass
self.assertEqual(interrupt_polling.__calls__, 0)
|
