glib/gio/tests/memory-monitor-portal.py.in
Bastien Nocera e1819c42fb gio: Fix conditions in memory-monitor test
We were lucky that this worked in some cases (the test is racy), but we
should actually run the condition check each loop, rather than when the
function is called.

Spotted by Martin Pitt:
96a8c02d24 (r54773831)
2021-09-06 14:46:15 +02:00

134 lines
5.0 KiB
Python
Executable File

#!/usr/bin/python3
# This program 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 3 of the License, or (at your option) any
# later version. See http://www.gnu.org/copyleft/lgpl.html for the full text
# of the license.
__author__ = 'Bastien Nocera'
__email__ = 'hadess@hadess.net'
__copyright__ = '(c) 2019 Red Hat Inc.'
__license__ = 'LGPL 3+'
import unittest
import sys
import subprocess
import fcntl
import os
import time
import taptestrunner
try:
# Do all non-standard imports here so we can skip the tests if any
# needed packages are not available.
import dbus
import dbus.mainloop.glib
import dbusmock
from gi.repository import GLib
from gi.repository import Gio
dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
XDG_DESKTOP_PORTAL_PATH = "@libexecdir@/xdg-desktop-portal"
class TestLowMemoryMonitorPortal(dbusmock.DBusTestCase):
'''Test GMemoryMonitorPortal'''
@classmethod
def setUpClass(klass):
klass.start_system_bus()
klass.dbus_con = klass.get_dbus(True)
# Start session bus so that xdg-desktop-portal can run on it
klass.start_session_bus()
def setUp(self):
try:
Gio.MemoryMonitor
except AttributeError:
raise unittest.SkipTest('Low memory monitor not in '
'introspection data. Requires '
'GObject-Introspection ≥ 1.63.2')
try:
(self.p_mock, self.obj_lmm) = self.spawn_server_template(
'low_memory_monitor', {}, stdout=subprocess.PIPE)
except ModuleNotFoundError:
raise unittest.SkipTest("Low memory monitor dbusmock template not "
"found. Requires dbusmock ≥ 0.18.4.")
# set log to nonblocking
flags = fcntl.fcntl(self.p_mock.stdout, fcntl.F_GETFL)
fcntl.fcntl(self.p_mock.stdout, fcntl.F_SETFL, flags | os.O_NONBLOCK)
self.last_warning = -1
self.dbusmock = dbus.Interface(self.obj_lmm, dbusmock.MOCK_IFACE)
try:
self.xdp = subprocess.Popen([XDG_DESKTOP_PORTAL_PATH])
except FileNotFoundError:
raise unittest.SkipTest("xdg-desktop-portal not available")
try:
self.wait_for_bus_object('org.freedesktop.portal.Desktop',
'/org/freedesktop/portal/desktop')
except:
raise
# subprocess.Popen(['gdbus', 'monitor', '--session', '--dest', 'org.freedesktop.portal.Desktop'])
os.environ['GTK_USE_PORTAL'] = "1"
self.memory_monitor = Gio.MemoryMonitor.dup_default()
assert("GMemoryMonitorPortal" in str(self.memory_monitor))
self.memory_monitor.connect("low-memory-warning", self.portal_memory_warning_cb)
self.mainloop = GLib.MainLoop()
self.main_context = self.mainloop.get_context()
def tearDown(self):
self.p_mock.terminate()
self.p_mock.wait()
def assertEventually(self, condition, message=None, timeout=50):
'''Assert that condition function eventually returns True.
Timeout is in deciseconds, defaulting to 50 (5 seconds). message is
printed on failure.
'''
while timeout >= 0:
context = GLib.MainContext.default()
while context.iteration(False):
pass
if condition():
break
timeout -= 1
time.sleep(0.1)
else:
self.fail(message or 'timed out waiting for ' + str(condition))
def portal_memory_warning_cb(self, monitor, level):
self.last_warning = level
self.main_context.wakeup()
def test_low_memory_warning_portal_signal(self):
'''LowMemoryWarning signal'''
# Wait 2 seconds
timeout = 2
while timeout > 0:
time.sleep(0.5)
timeout -= 0.5
self.main_context.iteration(False)
self.dbusmock.EmitWarning(100)
# Wait 2 seconds or until warning
self.assertEventually(lambda: self.last_warning == 100, "'100' low-memory warning not received", 20)
self.dbusmock.EmitWarning(255)
# Wait 2 seconds or until warning
self.assertEventually(lambda: self.last_warning == 255, "'255' low-memory warning not received", 20)
except ImportError as e:
@unittest.skip("Cannot import %s" % e.name)
class TestLowMemoryMonitorPortal(unittest.TestCase):
def test_low_memory_warning_portal_signal(self):
pass
if __name__ == '__main__':
unittest.main(testRunner=taptestrunner.TAPTestRunner())