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#!/usr/bin/python
'''Test case for duck punching new implementations of C++ virtual methods into object instances.'''
import unittest
import types
import sys
from PySide.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.assert_(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.assert_(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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