mutter/src/tests/mutter_dbusrunner.py
Sebastian Wick e21f839776 tests/dbus-runner: Detect nested invocations to skip mocking
The test and dist CI jobs run wrap the meson calls in dbus-runner to
avoid setting up dbus servers and mocking services for every test but
the dbus-runner invocation from meson test didn't actually skip all the
setup.

This nested mocking also doesn't work because the system bus is assumed
to be the host system bus and not a mocked one.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2618>
2023-11-01 10:55:04 +00:00

315 lines
11 KiB
Python

#!/usr/bin/env python3
import dbus
import sys
import os
import fcntl
import subprocess
import getpass
import argparse
import logind_helpers
from collections import OrderedDict
from dbusmock import DBusTestCase
from dbus.mainloop.glib import DBusGMainLoop
from pathlib import Path
from gi.repository import Gio
def escape_object_path(path):
b = bytearray()
b.extend(path.encode())
path = Gio.dbus_escape_object_path_bytestring(b)
if path[0].isdigit():
path = "_{0:02x}{1}".format(ord(path[0]), path[1:])
return os.path.basename(path)
def get_subprocess_stdout():
if os.getenv('META_DBUS_RUNNER_VERBOSE') == '1':
return sys.stderr
else:
return subprocess.DEVNULL;
class MutterDBusRunner(DBusTestCase):
@classmethod
def __get_templates_dir(klass):
return os.path.join(os.path.dirname(__file__), 'dbusmock-templates')
@classmethod
def setUpClass(klass, enable_kvm, launch):
klass.templates_dirs = [klass.__get_templates_dir()]
klass.mocks = OrderedDict()
klass.host_system_bus_address = os.getenv('DBUS_SYSTEM_BUS_ADDRESS')
if klass.host_system_bus_address is None:
klass.host_system_bus_address = 'unix:path=/run/dbus/system_bus_socket'
try:
dbus.bus.BusConnection(klass.host_system_bus_address)
klass.has_host_system_bus = True
except:
klass.has_host_system_bus = False
print('Starting D-Bus daemons (session & system)...', file=sys.stderr)
DBusTestCase.setUpClass()
klass.start_session_bus()
klass.start_system_bus()
print('Launching required services...', file=sys.stderr)
klass.service_processes = []
for service in launch:
klass.service_processes += [subprocess.Popen(service)]
print('Starting mocked services...', file=sys.stderr)
(klass.mocks_manager, klass.mock_obj) = klass.start_from_local_template(
'meta-mocks-manager', {'templates-dir': klass.__get_templates_dir()})
klass.start_from_local_template('localed')
klass.start_from_local_template('colord')
klass.start_from_local_template('gsd-color')
klass.start_from_local_template('rtkit')
klass.start_from_local_template('screensaver')
klass.system_bus_con = klass.get_dbus(system_bus=True)
klass.session_bus_con = klass.get_dbus(system_bus=False)
klass.init_logind(enable_kvm)
if klass.session_bus_con.name_has_owner('org.gnome.Mutter.DisplayConfig'):
raise Exception(
'org.gnome.Mutter.DisplayConfig already has owner on the session bus, bailing')
@classmethod
def tearDownClass(klass):
klass.mock_obj.Cleanup()
for (mock_server, mock_obj) in reversed(klass.mocks.values()):
mock_server.terminate()
mock_server.wait()
for process in klass.service_processes:
process.terminate()
process.wait()
DBusTestCase.tearDownClass()
@classmethod
def start_from_template(klass, template, params={}, system_bus=None):
mock_server, mock_obj = \
klass.spawn_server_template(template,
params,
get_subprocess_stdout(),
system_bus=system_bus)
mocks = (mock_server, mock_obj)
return mocks
@classmethod
def start_from_local_template(klass, template_file_name, params={}, system_bus=None):
template = klass.find_template(template_file_name)
return klass.start_from_template(template, params, system_bus=system_bus)
@classmethod
def start_from_template_managed(klass, template):
klass.mock_obj.StartFromTemplate(template)
@classmethod
def start_from_local_template_managed(klass, template_file_name):
template = klass.find_template(template_file_name)
klass.mock_obj.StartFromLocalTemplate(template)
@classmethod
def start_from_class(klass, mock_class, params={}):
mock_server = \
klass.spawn_server(mock_class.BUS_NAME,
mock_class.MAIN_OBJ,
mock_class.MAIN_IFACE,
mock_class.SYSTEM_BUS,
stdout=get_subprocess_stdout())
bus = klass.get_dbus(system_bus=mock_class.SYSTEM_BUS)
mock_obj = bus.get_object(mock_class.BUS_NAME, mock_class.MAIN_OBJ)
mock_class.load(mock_obj, params)
mocks = (mock_server, mock_obj)
return mocks
def wrap_logind_call(call):
code = \
f'''
import os
import sys
sys.path.insert(0, '{os.path.dirname(__file__)}')
import logind_helpers
{call}
'''
return code
@classmethod
def forward_to_host(klass, object_path, interface, method, in_type, out_type):
proxy = klass.system_bus_con.get_object('org.freedesktop.login1',
object_path)
proxy.AddMethod(interface, method, in_type, out_type,
f'''
import os
import sys
sys.path.insert(0, '{os.path.dirname(__file__)}')
import logind_helpers
ret = logind_helpers.call_host('{klass.host_system_bus_address}',
'{object_path}',
'{interface}',
'{method}',
'{in_type}',
args)
''')
@classmethod
def init_logind_forward(klass, session_path, seat_path):
klass.forward_to_host(session_path, 'org.freedesktop.login1.Session',
'TakeDevice',
'uu', 'hb')
klass.forward_to_host(session_path, 'org.freedesktop.login1.Session',
'ReleaseDevice',
'uu', '')
klass.forward_to_host(session_path, 'org.freedesktop.login1.Session',
'TakeDevice',
'uu', 'hb')
klass.forward_to_host(session_path, 'org.freedesktop.login1.Session',
'TakeControl',
'b', '')
klass.forward_to_host(seat_path, 'org.freedesktop.login1.Seat',
'SwitchTo',
'u', '')
@classmethod
def init_logind_kvm(klass, session_path):
session_obj = klass.system_bus_con.get_object('org.freedesktop.login1', session_path)
session_obj.AddMethod('org.freedesktop.login1.Session',
'TakeDevice',
'uu', 'hb',
klass.wrap_logind_call(
f'''
major = args[0]
minor = args[1]
ret = logind_helpers.open_file_direct(major, minor)
'''))
session_obj.AddMethods('org.freedesktop.login1.Session', [
('ReleaseDevice', 'uu', '', ''),
('TakeControl', 'b', '', ''),
])
@classmethod
def find_host_session_name(klass):
if 'XDG_SESSION_ID' in os.environ:
return escape_object_path(os.environ['XDG_SESSION_ID'])
bus = dbus.bus.BusConnection(klass.host_system_bus_address)
session_auto_proxy = bus.get_object('org.freedesktop.login1',
'/org/freedesktop/login1/session/auto')
props = dbus.Interface(session_auto_proxy,
dbus_interface='org.freedesktop.DBus.Properties')
session_id = props.Get('org.freedesktop.login1.Session', 'Id')
manager_proxy = bus.get_object('org.freedesktop.login1',
'/org/freedesktop/login1')
manager = dbus.Interface(manager_proxy,
dbus_interface='org.freedesktop.login1.Manager')
session_path = manager.GetSession(session_id)
return os.path.basename(session_path)
@classmethod
def init_logind(klass, enable_kvm):
logind = klass.start_from_template('logind')
[p_mock, obj] = logind
mock_iface = 'org.freedesktop.DBus.Mock'
seat_path = obj.AddSeat('seat0', dbus_interface=mock_iface)
session_name = 'dummy'
if klass.has_host_system_bus:
session_name = klass.find_host_session_name()
session_path = obj.AddSession(session_name, 'seat0',
dbus.types.UInt32(os.getuid()),
getpass.getuser(),
True,
dbus_interface=mock_iface)
if enable_kvm:
klass.init_logind_kvm(session_path)
elif klass.has_host_system_bus:
klass.init_logind_forward(session_path, seat_path)
@classmethod
def add_template_dir(klass, templates_dir):
klass.templates_dirs += [templates_dir]
@classmethod
def find_template(klass, template_name):
for templates_dir in klass.templates_dirs:
template_path = os.path.join(templates_dir, template_name + '.py')
template_file = Path(template_path)
if template_file.is_file():
return template_path
raise FileNotFoundError(f'Couldnt find a {template_name} template')
def wrap_call(args, wrapper):
env = {}
env.update(os.environ)
env['NO_AT_BRIDGE'] = '1'
env['GTK_A11Y'] = 'none'
env['GSETTINGS_BACKEND'] = 'memory'
env['META_DBUS_RUNNER_ACTIVE'] = '1'
if wrapper == 'gdb':
args = ['gdb', '-ex', 'r', '-ex', 'bt full', '--args'] + args
elif wrapper:
args = wrapper.split(' ') + args
p = subprocess.Popen(args, env=env)
return p.wait()
def meta_run(klass):
DBusGMainLoop(set_as_default=True)
parser = argparse.ArgumentParser()
parser.add_argument('--kvm', action='store_true', default=False)
parser.add_argument('--launch', action='append', default=[])
(args, rest) = parser.parse_known_args(sys.argv)
rest.pop(0)
if rest[0] == '--':
rest.pop(0)
result = 1
if os.getenv('META_DBUS_RUNNER_ACTIVE') == None:
klass.setUpClass(args.kvm, args.launch)
runner = klass()
runner.assertGreater(len(rest), 0)
wrapper = os.getenv('META_DBUS_RUNNER_WRAPPER')
try:
print('Running test case...', file=sys.stderr)
result = wrap_call(rest, wrapper)
finally:
MutterDBusRunner.tearDownClass()
else:
try:
print(('Inside a nested meta-dbus-runner: '
'Not re-creating mocked environment.'),
file=sys.stderr)
print('Running test case...', file=sys.stderr)
result = wrap_call(rest, None)
finally:
pass
return result