Please help me mock libnotify notifications

[mbridon]

I had originally opened #230, but then due to health issues I spent a few months without ever answering @martinpitt in that issue. 😞

So now I did manage to to get a machine id in my CI. 😉

Now what I need is to mock org.freedesktop.Notifications so the tests can send notifications while there is a dbus session service running to catch those.

I think I can do that as follows:

import dbus
import dbusmock
import subprocess


class TestMyProgram(dbusmock.DBusTestCase):
    @classmethod
    def setUpClass(cls):
        cls.start_session_bus()
        cls.dbus_con = cls.get_dbus(session_bus=True)

    def setUp(self):
        self.p_mock = self.spawn_server('org.freedesktop.Notification',
                                        '/org/freedesktop/Notification',
                                        'org.freedesktop.Notification',
                                        session_bus=True,
                                        stdout=subprocess.PIPE)

        # Get a proxy for the UPower object's Mock interface
        self.dbus_notification_mock = dbus.Interface(self.dbus_con.get_object(
            'org.freedesktop.Notification', '/org/freedesktop/Notification'),
            dbusmock.MOCK_IFACE)

        self.dbus_upower_mock.AddMethod('', 'Notify', '', '', '')

    def tearDown(self):
        self.p_mock.stdout.close()
        self.p_mock.terminate()
        self.p_mock.wait()

    def test_suspend_on_idle(self):
        # That's where I suppose I can run the tests which would send notifications, right? 🤔 

        # now check the log that we got one Suspend() call
        self.assertRegex(self.p_mock.stdout.readline(), b'^[0-9.]+ Suspend$')

Again, my apologies for not having given any sign of life, I'll try harder next time, I promise. 🙇