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'''
TestNotification
================
Tested platforms:
* Windows
* Linux - notify-send, dbus
'''
import unittest
import sys
from time import sleep
from os.path import dirname, abspath, join
from unittest.mock import Mock, patch
from plyer.tests.common import PlatformTest, platform_import
class MockedNotifySend:
'''
Mocked object used instead of the console-like calling
of notify-send binary with parameters.
'''
@staticmethod
def whereis_exe(binary):
'''
Mock whereis_exe, so that it looks like
Linux notify-send binary is present on the system.
'''
return binary == 'notify-send'
@staticmethod
def call(args):
'''
Mocked subprocess.call to check console parameters.
'''
assert len(args) >= 3
assert TestNotification.data['title'] in args
assert TestNotification.data['message'] in args
@staticmethod
def warn(msg):
'''
Mocked warnings.warn, so that we check the custom ImportError message.
'''
assert 'dbus package is not installed' in msg
class TestNotification(unittest.TestCase):
'''
TestCase for plyer.notification.
'''
data = {
'title': 'title',
'message': 'My Message\nis multiline',
'app_name': 'Plyer Test',
'app_icon': join(
dirname(abspath(__file__)),
'images', 'kivy32.ico'
),
'timeout': 0.7
}
def show_notification(self, instance):
'''
Call notify() from platform specific instance with sample data.
'''
instance.notify(**self.data)
@PlatformTest('win')
def test_notification_windows(self):
'''
Test Windows API for plyer.notification.
'''
import ctypes
from ctypes import (
WINFUNCTYPE, POINTER,
create_unicode_buffer,
c_bool, c_int
)
notif = platform_import(
platform='win',
module_name='notification'
).instance()
enum_windows = ctypes.windll.user32.EnumWindows
get_class_name = ctypes.windll.user32.GetClassNameW
# loop over windows and get refs to
# the opened plyer notifications
clsnames = []
def fetch_class(hwnd, *args):
'''
EnumWindowsProc callback for EnumWindows.
'''
buff = create_unicode_buffer(50)
get_class_name(hwnd, buff, 50)
if 'Plyer' in buff.value:
clsnames.append(buff.value)
# ensure it's not an empty facade
self.assertIn('WindowsNotification', str(notif))
# create enum function for EnumWindows
enum_windows_proc = WINFUNCTYPE(
# returns
c_bool,
# input params: hwnd, lParam
POINTER(c_int), POINTER(c_int)
)
for i in range(3):
self.show_notification(notif)
# the balloon needs some time to became visible in WinAPI
sleep(0.2)
# fetch window class names
enum_windows(
# enum & params
enum_windows_proc(fetch_class), None
)
# 3 active balloons at the same time,
# class_name is incremented - see WindowsBalloonTip
self.assertEqual(len(clsnames), i + 1)
self.assertIn('PlyerTaskbar' + str(i), clsnames)
clsnames = []
@PlatformTest('linux')
def test_notification_dbus(self):
'''
Test mocked Linux DBus for plyer.notification.
'''
notif = platform_import(
platform='linux',
module_name='notification'
)
self.assertIn('NotifyDbus', dir(notif))
# (3) mocked Interface called from dbus
interface = Mock()
interface.side_effect = (interface, )
# (2) mocked SessionBus called from dbus
session_bus = Mock()
session_bus.side_effect = (session_bus, )
# (1) mocked dbus for import
dbus = Mock(SessionBus=session_bus, Interface=interface)
# inject the mocked module
self.assertNotIn('dbus', sys.modules)
sys.modules['dbus'] = dbus
try:
notif = notif.instance()
self.assertIn('NotifyDbus', str(notif))
# call notify()
self.show_notification(notif)
# check whether Mocks were called
dbus.SessionBus.assert_called_once()
session_bus.get_object.assert_called_once_with(
'org.freedesktop.Notifications',
'/org/freedesktop/Notifications'
)
interface.Notify.assert_called_once_with(
TestNotification.data['app_name'],
0,
TestNotification.data['app_icon'],
TestNotification.data['title'],
TestNotification.data['message'],
[], {},
TestNotification.data['timeout'] * 1000
)
finally:
del sys.modules['dbus']
self.assertNotIn('dbus', sys.modules)
@PlatformTest('linux')
def test_notification_notifysend(self):
'''
Test mocked Linux notify-send for plyer.notification.
'''
notif = platform_import(
platform='linux',
module_name='notification',
whereis_exe=MockedNotifySend.whereis_exe
)
self.assertIn('NotifySendNotification', dir(notif))
with patch(target='warnings.warn', new=MockedNotifySend.warn):
notif = notif.instance()
self.assertIn('NotifySendNotification', str(notif))
with patch(target='subprocess.call', new=MockedNotifySend.call):
self.assertIsNone(self.show_notification(notif))
if __name__ == '__main__':
unittest.main()
|
