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# SPDX-License-Identifier: LGPL-3.0-or-later
__author__ = "Bastien Nocera"
__copyright__ = """
(c) 2019 Red Hat Inc.
(c) 2017 - 2022 Martin Pitt <martin@piware.de>
"""
import fcntl
import os
import subprocess
import sys
import unittest
import dbus
import dbus.mainloop.glib
import dbusmock
dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
class TestLowMemoryMonitor(dbusmock.DBusTestCase):
"""Test mocking low-memory-monitor"""
@classmethod
def setUpClass(cls):
cls.start_system_bus()
cls.dbus_con = cls.get_dbus(True)
def setUp(self):
(self.p_mock, self.obj_lmm) = self.spawn_server_template("low_memory_monitor", {}, stdout=subprocess.PIPE)
self.addCleanup(self.p_mock.wait)
self.addCleanup(self.p_mock.terminate)
self.addCleanup(self.p_mock.stdout.close)
# 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)
def test_low_memory_warning_signal(self):
"""LowMemoryWarning signal"""
self.dbusmock.EmitWarning(100)
log = self.p_mock.stdout.read()
self.assertRegex(log, b"[0-9.]+ emit .*LowMemoryWarning 100\n")
self.dbusmock.EmitWarning(255)
log = self.p_mock.stdout.read()
self.assertRegex(log, b"[0-9.]+ emit .*LowMemoryWarning 255\n")
if __name__ == "__main__":
# avoid writing to stderr
unittest.main(testRunner=unittest.TextTestRunner(stream=sys.stdout))
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