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# Copyright 2017 Christoph Reiter
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, see <http://www.gnu.org/licenses/>.
import os
import signal
import unittest
import threading
from contextlib import contextmanager
try:
from gi.repository import Gtk
Gtk_version = Gtk._version
except ImportError:
Gtk = None
Gtk_version = None
from gi.repository import Gio, GLib
from gi._ossighelper import wakeup_on_signal, register_sigint_fallback
class TestOverridesWakeupOnAlarm(unittest.TestCase):
@contextmanager
def _run_with_timeout(self, timeout, abort_func):
failed = []
def fail():
abort_func()
failed.append(1)
return True
fail_id = GLib.timeout_add(timeout, fail)
try:
yield
finally:
GLib.source_remove(fail_id)
self.assertFalse(failed)
def test_basic(self):
self.assertEqual(signal.set_wakeup_fd(-1), -1)
with wakeup_on_signal():
pass
self.assertEqual(signal.set_wakeup_fd(-1), -1)
def test_in_thread(self):
failed = []
def target():
try:
with wakeup_on_signal():
pass
except ValueError or EnvironmentError:
failed.append(1)
t = threading.Thread(target=target)
t.start()
t.join(5)
self.assertFalse(failed)
@unittest.skipIf(os.name == "nt", "not on Windows")
def test_glib_mainloop(self):
loop = GLib.MainLoop()
signal.signal(signal.SIGALRM, lambda *args: loop.quit())
GLib.idle_add(signal.setitimer, signal.ITIMER_REAL, 0.001)
with self._run_with_timeout(2000, loop.quit):
loop.run()
@unittest.skipIf(os.name == "nt", "not on Windows")
def test_gio_application(self):
app = Gio.Application()
signal.signal(signal.SIGALRM, lambda *args: app.quit())
GLib.idle_add(signal.setitimer, signal.ITIMER_REAL, 0.001)
with self._run_with_timeout(2000, app.quit):
app.hold()
app.connect("activate", lambda *args: None)
app.run()
@unittest.skipIf(Gtk is None or os.name == "nt", "not on Windows")
@unittest.skipIf(Gtk is None or Gtk_version == "4.0", "not in gtk4")
def test_gtk_main(self):
signal.signal(signal.SIGALRM, lambda *args: Gtk.main_quit())
GLib.idle_add(signal.setitimer, signal.ITIMER_REAL, 0.001)
with self._run_with_timeout(2000, Gtk.main_quit):
Gtk.main()
@unittest.skipIf(Gtk is None or os.name == "nt", "not on Windows")
@unittest.skipIf(Gtk is None or Gtk_version == "4.0", "not in gtk4")
def test_gtk_dialog_run(self):
w = Gtk.Window()
d = Gtk.Dialog(transient_for=w)
signal.signal(signal.SIGALRM, lambda *args: d.destroy())
GLib.idle_add(signal.setitimer, signal.ITIMER_REAL, 0.001)
with self._run_with_timeout(2000, d.destroy):
d.run()
class TestSigintFallback(unittest.TestCase):
def setUp(self):
self.assertEqual(signal.getsignal(signal.SIGINT), signal.default_int_handler)
def tearDown(self):
self.assertEqual(signal.getsignal(signal.SIGINT), signal.default_int_handler)
def test_replace_handler_and_restore_nested(self):
with register_sigint_fallback(lambda: None):
new_handler = signal.getsignal(signal.SIGINT)
self.assertNotEqual(new_handler, signal.default_int_handler)
with register_sigint_fallback(lambda: None):
self.assertTrue(signal.getsignal(signal.SIGINT) is new_handler)
self.assertEqual(signal.getsignal(signal.SIGINT), signal.default_int_handler)
def test_no_replace_if_not_default(self):
def new_handler(*args):
return None
signal.signal(signal.SIGINT, new_handler)
try:
with register_sigint_fallback(lambda: None):
self.assertTrue(signal.getsignal(signal.SIGINT) is new_handler)
with register_sigint_fallback(lambda: None):
self.assertTrue(signal.getsignal(signal.SIGINT) is new_handler)
self.assertTrue(signal.getsignal(signal.SIGINT) is new_handler)
finally:
signal.signal(signal.SIGINT, signal.default_int_handler)
def test_noop_in_threads(self):
failed = []
def target():
try:
with (
register_sigint_fallback(lambda: None),
register_sigint_fallback(lambda: None),
):
self.assertTrue(
signal.getsignal(signal.SIGINT) is signal.default_int_handler
)
except:
failed.append(1)
t = threading.Thread(target=target)
t.start()
t.join(5)
self.assertFalse(failed)
@unittest.skipIf(os.name == "nt", "not on Windows")
def test_no_replace_if_set_by_glib(self):
id_ = GLib.unix_signal_add(
GLib.PRIORITY_DEFAULT, signal.SIGINT, lambda *args: None
)
try:
# signal.getsignal() doesn't pick up that unix_signal_add()
# has changed the handler, but we should anyway.
self.assertEqual(
signal.getsignal(signal.SIGINT), signal.default_int_handler
)
with register_sigint_fallback(lambda: None):
self.assertEqual(
signal.getsignal(signal.SIGINT), signal.default_int_handler
)
self.assertEqual(
signal.getsignal(signal.SIGINT), signal.default_int_handler
)
finally:
GLib.source_remove(id_)
signal.signal(signal.SIGINT, signal.SIG_DFL)
signal.signal(signal.SIGINT, signal.default_int_handler)
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