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#!/usr/bin/python
#############################################################################
##
## Copyright (C) 2016 The Qt Company Ltd.
## Contact: https://www.qt.io/licensing/
##
## This file is part of the test suite of PySide2.
##
## $QT_BEGIN_LICENSE:GPL-EXCEPT$
## Commercial License Usage
## Licensees holding valid commercial Qt licenses may use this file in
## accordance with the commercial license agreement provided with the
## Software or, alternatively, in accordance with the terms contained in
## a written agreement between you and The Qt Company. For licensing terms
## and conditions see https://www.qt.io/terms-conditions. For further
## information use the contact form at https://www.qt.io/contact-us.
##
## GNU General Public License Usage
## Alternatively, this file may be used under the terms of the GNU
## General Public License version 3 as published by the Free Software
## Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
## included in the packaging of this file. Please review the following
## information to ensure the GNU General Public License requirements will
## be met: https://www.gnu.org/licenses/gpl-3.0.html.
##
## $QT_END_LICENSE$
##
#############################################################################
'''Test case for duck punching new implementations of C++ virtual methods into object instances.'''
import unittest
import types
import sys
from PySide2.QtCore import QObject
from helper import UsesQCoreApplication
def MethodType(func, instance, instanceType):
if sys.version_info[0] == 3:
return types.MethodType(func, instance)
else:
return types.MethodType(func, instance, instanceType)
class Duck(QObject):
def __init__(self):
QObject.__init__(self)
def childEvent(self, event):
QObject.childEvent(self, event)
class TestDuckPunchingOnQObjectInstance(UsesQCoreApplication):
'''Test case for duck punching new implementations of C++ virtual methods into object instances.'''
def setUp(self):
#Acquire resources
self.duck_childEvent_called = False
UsesQCoreApplication.setUp(self)
def tearDown(self):
#Release resources
del self.duck_childEvent_called
UsesQCoreApplication.tearDown(self)
def testChildEventMonkeyPatch(self):
#Test if the new childEvent injected on QObject instance is called from C++
parent = QObject()
def childEvent(obj, event):
self.duck_childEvent_called = True
parent.childEvent = MethodType(childEvent, parent, QObject)
child = QObject()
child.setParent(parent)
self.assertTrue(self.duck_childEvent_called)
# This is done to decrease the refcount of the vm object
# allowing the object wrapper to be deleted before the
# BindingManager. This is useful when compiling Shiboken
# for debug, since the BindingManager destructor has an
# assert that checks if the wrapper mapper is empty.
parent.childEvent = None
def testChildEventMonkeyPatchWithInheritance(self):
#Test if the new childEvent injected on a QObject's extension class instance is called from C++
parent = Duck()
def childEvent(obj, event):
QObject.childEvent(obj, event)
self.duck_childEvent_called = True
child = QObject()
child.setParent(parent)
parent.childEvent = MethodType(childEvent, parent, QObject)
child = QObject()
child.setParent(parent)
self.assertTrue(self.duck_childEvent_called)
# This is done to decrease the refcount of the vm object
# allowing the object wrapper to be deleted before the
# BindingManager. This is useful when compiling Shiboken
# for debug, since the BindingManager destructor has an
# assert that checks if the wrapper mapper is empty.
parent.childEvent = None
if __name__ == '__main__':
unittest.main()
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