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# -*- Mode: Python -*-
import os
import sys
import select
import signal
import time
import unittest
try:
from _thread import start_new_thread
start_new_thread # pyflakes
except ImportError:
# Python 2
from thread import start_new_thread
from gi.repository import GLib
from compathelper import _bytes
class TestMainLoop(unittest.TestCase):
def test_exception_handling(self):
pipe_r, pipe_w = os.pipe()
pid = os.fork()
if pid == 0:
os.close(pipe_w)
select.select([pipe_r], [], [])
os.close(pipe_r)
os._exit(1)
def child_died(pid, status, loop):
loop.quit()
raise Exception("deadbabe")
loop = GLib.MainLoop()
GLib.child_watch_add(GLib.PRIORITY_DEFAULT, pid, child_died, loop)
os.close(pipe_r)
os.write(pipe_w, _bytes("Y"))
os.close(pipe_w)
def excepthook(type, value, traceback):
self.assertTrue(type is Exception)
self.assertEqual(value.args[0], "deadbabe")
sys.excepthook = excepthook
try:
got_exception = False
try:
loop.run()
except:
got_exception = True
finally:
sys.excepthook = sys.__excepthook__
#
# The exception should be handled (by printing it)
# immediately on return from child_died() rather
# than here. See bug #303573
#
self.assertFalse(got_exception)
def test_concurrency(self):
def on_usr1(signum, frame):
pass
try:
# create a thread which will terminate upon SIGUSR1 by way of
# interrupting sleep()
orig_handler = signal.signal(signal.SIGUSR1, on_usr1)
start_new_thread(time.sleep, (10,))
# now create two main loops
loop1 = GLib.MainLoop()
loop2 = GLib.MainLoop()
GLib.timeout_add(100, lambda: os.kill(os.getpid(), signal.SIGUSR1))
GLib.timeout_add(500, loop1.quit)
loop1.run()
loop2.quit()
finally:
signal.signal(signal.SIGUSR1, orig_handler)
def test_sigint(self):
pid = os.fork()
if pid == 0:
time.sleep(0.5)
os.kill(os.getppid(), signal.SIGINT)
os._exit(0)
loop = GLib.MainLoop()
try:
loop.run()
self.fail('expected KeyboardInterrupt exception')
except KeyboardInterrupt:
pass
self.assertFalse(loop.is_running())
os.waitpid(pid, 0)
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