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# -*- coding: utf-8 -*-
# Copyright (C) 2010, 2011 Sebastian Wiesner <lunaryorn@googlemail.com>
# This library 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 2.1 of the License, or (at your
# option) any later version.
# This library is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
# for more details.
# You should have received a copy of the GNU Lesser General Public License
# along with this library; if not, write to the Free Software Foundation,
# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
from __future__ import (print_function, division, unicode_literals,
absolute_import)
from itertools import count
from functools import partial
import pytest
from mock import Mock
class BaseBinding(object):
def trigger_observer(self, action, monitor, action_trigger):
mainloop = self.create_mainloop()
signal_counter = count(1)
def _quit_when_done(*args, **kwargs):
value = next(signal_counter)
if value >= 2:
self.quit_mainloop(mainloop)
# slot dummies
event_slot = Mock(side_effect=_quit_when_done)
action_slots = {action: Mock(side_effect=_quit_when_done)}
observer = self.create_observer(monitor)
self.connect_signals(observer, event_slot, action_slots)
self.single_shot(0, action_trigger)
self.single_shot(5000, partial(self.quit_mainloop, mainloop))
self.run_mainloop(mainloop)
self.cleanup(observer)
return event_slot, action_slots
class Qt4Binding(BaseBinding):
def __init__(self, bindingname):
self.name = bindingname
def create_observer(self, monitor):
name = self.name.lower()
mod = __import__('pyudev.{0}'.format(name), None, None, [name])
observer = mod.QUDevMonitorObserver(monitor)
assert observer.monitor is monitor
assert isinstance(observer.notifier, self.qtcore.QSocketNotifier)
return observer
def import_or_skip(self):
self.qtcore = pytest.importorskip('{0}.QtCore'.format(self.name))
def create_mainloop(self):
app = self.qtcore.QCoreApplication.instance()
if not app:
app = self.qtcore.QCoreApplication([])
return app
def quit_mainloop(self, app):
app.quit()
def run_mainloop(self, app):
app.exec_()
def connect_signals(self, observer, event_slot, action_slots):
observer.deviceEvent.connect(event_slot)
signal_map = {'add': observer.deviceAdded,
'remove': observer.deviceRemoved,
'change': observer.deviceChanged,
'move': observer.deviceMoved}
for action, slot in action_slots.items():
signal_map[action].connect(slot)
def single_shot(self, timeout, callback):
self.qtcore.QTimer.singleShot(timeout, callback)
def cleanup(self, observer):
pass
class GlibBinding(BaseBinding):
name = 'Glib'
def __init__(self):
self.event_sources = []
def create_observer(self, monitor):
from pyudev.glib import GUDevMonitorObserver
observer = GUDevMonitorObserver(monitor)
assert observer.monitor is monitor
assert isinstance(observer.event_source, int)
return observer
def import_or_skip(self):
self.glib = pytest.importorskip('glib')
pytest.importorskip('gobject')
def create_mainloop(self):
return self.glib.MainLoop()
def quit_mainloop(self, mainloop):
mainloop.quit()
def run_mainloop(self, mainloop):
mainloop.run()
def wrap_callback(self, callback):
"""
Remove the emitter from callback invocation, it is not of any
interest to the test code.
"""
def _wrapper(obj, *args, **kwargs):
return callback(*args, **kwargs)
return _wrapper
def connect_signals(self, observer, event_slot, action_slots):
observer.connect('device-event', self.wrap_callback(event_slot))
signal_map = {'add': 'device-added', 'remove': 'device-removed',
'change': 'device-changed', 'move': 'device-moved'}
for action, slot in action_slots.items():
observer.connect(signal_map[action], self.wrap_callback(slot))
def single_shot(self, timeout, callback):
def _callback():
callback()
return False
self.event_sources.append(self.glib.timeout_add(timeout, _callback))
def cleanup(self, observer):
# cleanup all event sources. If this was not done, all tests save
# the first would spin endlessly. Apparently older event sources
# kind of "confuse" the main loop of the current test
for source in self.event_sources:
self.glib.source_remove(source)
self.glib.source_remove(observer.event_source)
self.event_sources = []
BINDINGS = [Qt4Binding('PyQt4'), Qt4Binding('PySide'), GlibBinding()]
ACTIONS = ('add', 'remove', 'change', 'move')
def pytest_generate_tests(metafunc):
if 'binding' in metafunc.funcargnames:
for binding in BINDINGS:
funcargs = dict(binding=binding)
id = binding.name
if 'action' in metafunc.funcargnames:
for action in ACTIONS:
funcargs.update(action=action)
metafunc.addcall(funcargs=funcargs,
id=id + ',' + action)
else:
metafunc.addcall(funcargs=funcargs, id=id)
def test_fake_monitor(fake_monitor, platform_device):
"""
Test the fake monitor just to make sure, that it works.
"""
for action in ('add', 'remove'):
fake_monitor.trigger_action(action)
received_action, device = fake_monitor.receive_device()
assert action == received_action
assert device == platform_device
class TestObserver(object):
def test_observer_fake(self, binding, action, fake_monitor,
platform_device):
binding.import_or_skip()
event_slot, action_slots = binding.trigger_observer(
action, fake_monitor, lambda: fake_monitor.trigger_action(action))
# check, that both slots were called
event_slot.assert_called_with(action, platform_device)
action_slots.pop(action).assert_called_with(platform_device)
@pytest.mark.privileged
def test_observer(self, binding, monitor):
binding.import_or_skip()
pytest.unload_dummy()
monitor.filter_by('net')
monitor.enable_receiving()
event_slot, action_slot = binding.trigger_observer(
'add', monitor, pytest.load_dummy)
action, device = event_slot.call_args[0]
assert action == 'add'
assert device.subsystem == 'net'
assert device.device_path == '/devices/virtual/net/dummy0'
event_slot, action_slot = binding.trigger_observer(
'remove', monitor, pytest.unload_dummy)
action, device = event_slot.call_args[0]
assert action == 'remove'
assert device.subsystem == 'net'
assert device.device_path == '/devices/virtual/net/dummy0'
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