proper test util imports, switched to the recommended pydbus package

.coveragerc

@@ -1,5 +1,5 @@
 [run]
 branch = True
-source = keymapper
+source = /usr/lib/python3.8/site-packages/keymapper
 concurrency = multiprocessing
 debug = multiproc

DEBIAN/control

@@ -2,5 +2,5 @@ Package: key-mapper
 Version: 0.1.0
 Architecture: all
 Maintainer: Sezanzeb <proxima@hip70890b.de>
-Depends: build-essential, libpython3-dev, libdbus-1-dev, python3, python3-setuptools, python3-evdev, python3-dbus, python3-gi
+Depends: build-essential, libpython3-dev, libdbus-1-dev, python3, python3-setuptools, python3-evdev, python3-pydbus, python3-gi
 Description: A tool to change the mapping of your input device buttons

README.md

@@ -59,8 +59,7 @@ groups
 ##### Git/pip
 
 ```bash
-git clone https://github.com/sezanzeb/key-mapper.git
-cd key-mapper && sudo python3 setup.py install
+sudo pip install git+https://github.com/sezanzeb/key-mapper.git
 ```
 
 ##### Manjaro/Arch
@@ -100,6 +99,6 @@ sudo dpkg -i python3-key-mapper_0.1.0-1_all.deb
 
 ```bash
 pylint keymapper --extension-pkg-whitelist=evdev
-sudo pip install -e . && coverage run tests/test.py
+sudo pip install . && coverage run tests/test.py
 coverage combine && coverage report -m
 ```

bin/key-mapper-service

@@ -29,12 +29,11 @@ from argparse import ArgumentParser
 import gi
 gi.require_version('GLib', '2.0')
 from gi.repository import GLib
-import dbus.mainloop.glib
-from dbus.mainloop.glib import DBusGMainLoop
+from pydbus import SessionBus
 
-from keymapper.logger import logger, update_verbosity, log_info, \
+from keymapper.logger import update_verbosity, log_info, \
     add_filehandler
-from keymapper.daemon import Daemon
+from keymapper.daemon import Daemon, BUS_NAME
 from keymapper.dev.permissions import can_read_devices
 
 
@@ -60,12 +59,11 @@ if __name__ == '__main__':
 
     can_read_devices()
 
-    session_bus = dbus.SessionBus(mainloop=DBusGMainLoop())
-    name = dbus.service.BusName('keymapper.Control', session_bus)
-    daemon = Daemon(session_bus, '/')
+    bus = SessionBus()
+    loop = GLib.MainLoop()
+    daemon = Daemon(True, loop)
+    bus.publish(BUS_NAME, daemon)
 
-    atexit.register(daemon.stop)
+    atexit.register(lambda: daemon.stop(True))
 
-    logger.info('Daemon running, waiting for dbus messages')
-    mainloop = GLib.MainLoop()
-    mainloop.run()
+    loop.run()

keymapper/daemon.py

@@ -19,16 +19,15 @@
 # along with key-mapper.  If not, see <https://www.gnu.org/licenses/>.
 
 
-"""Starts injecting keycodes based on the configuration."""
+"""Starts injecting keycodes based on the configuration.
+
+https://github.com/LEW21/pydbus/tree/cc407c8b1d25b7e28a6d661a29f9e661b1c9b964/examples/clientserver  # noqa pylint: disable=line-too-long
+"""
 
 
 import subprocess
 
-# TODO https://www.freedesktop.org/wiki/Software/DBusBindings/#python
-#  says "New applications should use pydbus"
-import dbus
-from dbus import service
-import dbus.mainloop.glib
+from pydbus import SessionBus
 
 from keymapper.logger import logger
 from keymapper.dev.injector import KeycodeInjector
@@ -36,6 +35,9 @@ from keymapper.mapping import Mapping
 from keymapper.config import config
 
 
+BUS_NAME = 'keymapper.Control'
+
+
 def is_service_running():
     """Check if the daemon is running."""
     try:
@@ -54,23 +56,13 @@ def get_dbus_interface():
         )
         return Daemon(autoload=False)
 
-    try:
-        bus = dbus.SessionBus()
-        remote_object = bus.get_object('keymapper.Control', '/')
-        interface = dbus.Interface(remote_object, 'keymapper.Interface')
-        logger.debug('Connected to dbus')
-    except dbus.exceptions.DBusException as error:
-        logger.warning(
-            'Could not connect to the dbus of "key-mapper-service", mapping '
-            'keys only works as long as the window is open.'
-        )
-        logger.debug(error)
-        return Daemon(autoload=False)
+    bus = SessionBus()
+    interface = bus.get(BUS_NAME)
 
     return interface
 
 
-class Daemon(service.Object):
+class Daemon:
     """Starts injecting keycodes based on the configuration.
 
     Can be talked to either over dbus or by instantiating it.
@@ -80,9 +72,34 @@ class Daemon(service.Object):
     continue to do so afterwards, but it can't decide to start injecting
     on its own.
     """
-    def __init__(self, *args, autoload=True, **kwargs):
+
+    dbus = f"""
+        <node>
+            <interface name='{BUS_NAME}'>
+                <method name='stop_injecting'>
+                    <arg type='s' name='device' direction='in'/>
+                </method>
+                <method name='start_injecting'>
+                    <arg type='s' name='device' direction='in'/>
+                    <arg type='s' name='preset' direction='in'/>
+                    <arg type='b' name='response' direction='out'/>
+                </method>
+                <method name='stop'>
+                    <arg type='b' name='terminate' direction='in'/>
+                </method>
+                <method name='hello'>
+                    <arg type='s' name='out' direction='in'/>
+                    <arg type='s' name='response' direction='out'/>
+                </method>
+            </interface>
+        </node>
+    """
+
+    def __init__(self, autoload=True, loop=None):
         """Constructs the daemon. You still need to run the GLib mainloop."""
+        logger.debug('Creating daemon')
         self.injectors = {}
+        self.loop = loop
         if autoload:
             for device, preset in config.iterate_autoload_presets():
                 mapping = Mapping()
@@ -93,9 +110,7 @@ class Daemon(service.Object):
                     self.injectors[device] = injector
                 except OSError as error:
                     logger.error(error)
-        super().__init__(*args, **kwargs)
 
-    @dbus.service.method('keymapper.Interface', in_signature='s')
     def stop_injecting(self, device):
         """Stop injecting the mapping for a single device."""
         if self.injectors.get(device) is None:
@@ -107,9 +122,6 @@ class Daemon(service.Object):
 
         self.injectors[device].stop_injecting()
 
-    # TODO if ss is the correct signature for multiple parameters, add an
-    #  example to https://gitlab.freedesktop.org/dbus/dbus-python/-/blob/master/doc/tutorial.txt # noqa pylint: disable=line-too-long
-    @dbus.service.method('keymapper.Interface', in_signature='ss')
     def start_injecting(self, device, preset):
         """Start injecting the preset for the device.
 
@@ -138,7 +150,6 @@ class Daemon(service.Object):
 
         return True
 
-    @dbus.service.method('keymapper.Interface', in_signature='b')
     def stop(self, terminate=False):
         """Stop all injections and end the service.
 
@@ -147,5 +158,10 @@ class Daemon(service.Object):
         for injector in self.injectors.values():
             injector.stop_injecting()
 
-        if terminate:
-            exit(0)
+        if terminate and self.loop:
+            logger.debug('Daemon stops')
+            self.loop.quit()
+
+    def hello(self, out):
+        """Used for tests."""
+        return out

setup.py

@@ -45,6 +45,6 @@ setup(
     install_requires=[
         'setuptools',
         'evdev',
-        'dbus-python'
+        'pydbus'
     ]
 )

tests/test.py

@@ -37,7 +37,21 @@ from keymapper.logger import update_verbosity
 
 assert not os.getcwd().endswith('tests')
 
-sys.path = [os.path.abspath('.')] + sys.path
+
+def is_service_running():
+    """Check if the daemon is running."""
+    try:
+        subprocess.check_output(['pgrep', '-f', 'key-mapper-service'])
+    except subprocess.CalledProcessError:
+        return
+    # let tests control daemon existance
+    raise Exception('Expected the service not to be running already.')
+
+
+is_service_running()
+
+# make sure the "tests" module visible
+sys.path.append(os.getcwd())
 
 # give tests some time to test stuff while the process
 # is still running
@@ -178,12 +192,6 @@ def patch_evdev():
     def list_devices():
         return fixtures.keys()
 
-    """
-    rlist = {device.fd: device for device in self.virtual_devices}
-    while True:
-        ready = select.select(rlist, [], [])[0]
-    """
-
     class InputDevice:
         # expose as existing attribute, otherwise the patch for
         # evdev < 1.0.0 will crash the test
@@ -281,19 +289,6 @@ def clear_write_history():
     while uinput_write_history_pipe[0].poll():
         uinput_write_history_pipe[0].recv()
 
-
-def is_service_running():
-    """Check if the daemon is running."""
-    try:
-        subprocess.check_output(['pgrep', '-f', 'key-mapper-service'])
-    except subprocess.CalledProcessError:
-        return
-    # let tests control daemon existance
-    raise Exception('Expected the service not to be running already.')
-
-
-is_service_running()
-
 # quickly fake some stuff before any other file gets a chance to import
 # the original versions
 patch_paths()
@@ -321,15 +316,17 @@ def main():
             'testcases', pattern='*.py'
         )
 
-    # add a newline to each "qux (foo.bar)..." output, because the logs
-    # will be on the same line otherwise
-    originalStartTest = unittest.TextTestResult.startTest
-    def startTest(self, test):
-        originalStartTest(self, test)
+    # add a newline to each "qux (foo.bar)..." output before each test,
+    # because the first log will be on the same line otherwise
+    original_start_test = unittest.TextTestResult.startTest
+
+    def start_test(self, test):
+        original_start_test(self, test)
         print()
-    unittest.TextTestResult.startTest = startTest
 
-    testrunner = unittest.TextTestRunner(verbosity=2).run(testsuite)
+    unittest.TextTestResult.startTest = start_test
+
+    unittest.TextTestRunner(verbosity=2).run(testsuite)
 
 
 if __name__ == "__main__":

tests/testcases/daemon.py

@@ -24,7 +24,6 @@ import multiprocessing
 import unittest
 import time
 
-import dbus
 import evdev
 import gi
 gi.require_version('Gtk', '3.0')
@@ -33,9 +32,9 @@ from gi.repository import Gtk
 from keymapper.state import custom_mapping, system_mapping, \
     clear_system_mapping
 from keymapper.config import config
-from keymapper.daemon import Daemon, get_dbus_interface
+from keymapper.daemon import Daemon, get_dbus_interface, BUS_NAME
 
-from test import uinput_write_history_pipe, Event, pending_events
+from tests.test import uinput_write_history_pipe, Event, pending_events
 
 
 def gtk_iteration():
@@ -49,7 +48,7 @@ class TestDBusDaemon(unittest.TestCase):
     def setUpClass(cls):
         cls.process = multiprocessing.Process(
             target=os.system,
-            args=('key-mapper-service',)
+            args=('key-mapper-service -d',)
         )
         cls.process.start()
         time.sleep(0.5)
@@ -57,13 +56,13 @@ class TestDBusDaemon(unittest.TestCase):
 
     @classmethod
     def tearDownClass(cls):
-        try:
-            cls.interface.stop(True)
-        except dbus.exceptions.DBusException:
-            pass
+        cls.interface.stop(True)
 
     def test_can_connect(self):
-        self.assertIsInstance(self.interface, dbus.Interface)
+        # it's a remote dbus object
+        self.assertEqual(self.interface._bus_name, BUS_NAME)
+        self.assertFalse(isinstance(self.interface, Daemon))
+        self.assertEqual(self.interface.hello('foo'), 'foo')
 
 
 class TestDaemon(unittest.TestCase):

tests/testcases/injector.py

@@ -32,7 +32,7 @@ from keymapper.state import custom_mapping, system_mapping, \
 from keymapper.mapping import Mapping
 from keymapper.config import config
 
-from test import uinput_write_history, Event, pending_events, fixtures, \
+from tests.test import uinput_write_history, Event, pending_events, fixtures, \
     clear_write_history, EVENT_READ_TIMEOUT, uinput_write_history_pipe, \
     MAX_ABS
 

tests/testcases/integration.py

@@ -40,7 +40,7 @@ from keymapper.paths import CONFIG, get_config_path
 from keymapper.config import config
 from keymapper.dev.reader import keycode_reader
 
-from test import tmp, pending_events, Event, uinput_write_history_pipe, \
+from tests.test import tmp, pending_events, Event, uinput_write_history_pipe, \
     clear_write_history
 
 

tests/testcases/logger.py

@@ -27,7 +27,7 @@ import logging
 from keymapper.logger import logger, add_filehandler, update_verbosity, \
     log_info
 
-from test import tmp
+from tests.test import tmp
 
 
 class TestLogger(unittest.TestCase):

tests/testcases/presets.py

@@ -29,7 +29,7 @@ from keymapper.presets import find_newest_preset, rename_preset, \
 from keymapper.paths import CONFIG
 from keymapper.state import custom_mapping
 
-from test import tmp
+from tests.test import tmp
 
 
 def create_preset(device, name='new preset'):

tests/testcases/reader.py

@@ -26,7 +26,7 @@ import time
 
 from keymapper.dev.reader import keycode_reader
 
-from test import Event, pending_events, EVENT_READ_TIMEOUT
+from tests.test import Event, pending_events, EVENT_READ_TIMEOUT
 
 
 CODE_1 = 100