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import pytest
import sys
class AppTestSelectSignal:
spaceconfig = {
"usemodules": ['select', 'time', 'signal'],
}
@pytest.mark.skipif(sys.platform=="win32", reason="not supported on windows")
def test_pep475_retry(self):
import select, time
import _signal as signal
def foo(*args):
signalled.append("ALARM")
# a list of functions that will do nothing more than sleep for 3
# seconds
cases = [(select.select, [], [], [], 3.0)]
if hasattr(select, 'poll'):
import posix
poll = select.poll()
cases.append((poll.poll, 3000)) # milliseconds
if hasattr(select, 'epoll'):
epoll = select.epoll()
cases.append((epoll.poll, 3.0))
if hasattr(select, 'kqueue'):
kqueue = select.kqueue()
cases.append((kqueue.control, [], 1, 3.0))
if hasattr(select, 'devpoll'):
raise NotImplementedError("write this test if we have devpoll")
for wait_for_three_seconds in cases:
print(wait_for_three_seconds[0])
signalled = []
signal.signal(signal.SIGALRM, foo)
try:
t1 = time.time()
signal.alarm(1)
wait_for_three_seconds[0](*wait_for_three_seconds[1:])
t2 = time.time()
finally:
signal.signal(signal.SIGALRM, signal.SIG_DFL)
print("result: signalled = %r in %s seconds" % (signalled, t2 - t1))
assert signalled != []
assert t2 - t1 > 2.99
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