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Diffstat (limited to 'sources/pyside6/tests/QtCore/duck_punching_test.py')
-rw-r--r-- | sources/pyside6/tests/QtCore/duck_punching_test.py | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/sources/pyside6/tests/QtCore/duck_punching_test.py b/sources/pyside6/tests/QtCore/duck_punching_test.py new file mode 100644 index 000000000..40246f9fd --- /dev/null +++ b/sources/pyside6/tests/QtCore/duck_punching_test.py @@ -0,0 +1,105 @@ +#!/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 Qt for Python. +## +## $QT_BEGIN_LICENSE:GPL-EXCEPT$ +## 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 os +import sys +import types +import unittest + +sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))) +from init_paths import init_test_paths +init_test_paths(False) + +from PySide6.QtCore import QObject +from helper.usesqcoreapplication import UsesQCoreApplication + +def MethodType(func, instance, instanceType): + return types.MethodType(func, instance) + +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() + |