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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
#############################################################################
##
## 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 cases for methods that receive references to objects.'''
import os
import sys
import unittest
sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
from shiboken_paths import init_paths
init_paths()
from sample import *
class ExtendedReference(Reference):
def __init__(self):
Reference.__init__(self)
self.uses_reference_virtual_called = False
self.uses_const_reference_virtual_called = False
self.reference_inc = 1
self.const_reference_inc = 2
self.multiplier = 333
def usesReferenceVirtual(self, ref, inc):
self.uses_reference_virtual_called = True
return ref.objId() + inc + self.reference_inc
def usesConstReferenceVirtual(self, ref, inc):
self.uses_const_reference_virtual_called = True
return ref.objId() + inc + self.const_reference_inc
def alterReferenceIdVirtual(self, ref):
ref.setObjId(ref.objId() * self.multiplier)
class ReferenceTest(unittest.TestCase):
'''Test case for methods that receive references to objects.'''
def testMethodThatReceivesReference(self):
'''Test a method that receives a reference to an object as argument.'''
objId = 123
r = Reference(objId)
self.assertEqual(Reference.usesReference(r), objId)
def testCantSegFaultWhenReceiveNone(self):
'''do not segfault when receiving None as argument.'''
s = Str()
self.assertTrue(None == s)
def testMethodThatReceivesConstReference(self):
'''Test a method that receives a const reference to an object as argument.'''
objId = 123
r = Reference(objId)
self.assertEqual(Reference.usesConstReference(r), objId)
def testModificationOfReference(self):
'''Tests if the identity of a reference argument is preserved when passing it to be altered in C++.'''
objId = 123
r1 = Reference(objId)
r1.alterReferenceIdVirtual(r1)
self.assertEqual(r1.objId(), objId * Reference.multiplier())
def testModificationOfReferenceCallingAVirtualIndirectly(self):
'''Tests if the identity of a reference argument is preserved when passing it to be altered in C++ through a method that calls a virtual method.'''
objId = 123
r1 = Reference(objId)
r1.callAlterReferenceIdVirtual(r1)
self.assertEqual(r1.objId(), objId * Reference.multiplier())
def testModificationOfReferenceCallingAReimplementedVirtualIndirectly(self):
'''Test if a Python override of a virtual method with a reference parameter called from C++ alters the argument properly.'''
objId = 123
r = Reference(objId)
er = ExtendedReference()
result = er.callAlterReferenceIdVirtual(r)
self.assertEqual(r.objId(), objId * er.multiplier)
def testReimplementedVirtualMethodCallWithReferenceParameter(self):
'''Test if a Python override of a virtual method with a reference parameter is correctly called from C++.'''
inc = 9
objId = 123
r = Reference(objId)
er = ExtendedReference()
result = er.callUsesReferenceVirtual(r, inc)
self.assertEqual(result, objId + inc + er.reference_inc)
def testReimplementedVirtualMethodCallWithConstReferenceParameter(self):
'''Test if a Python override of a virtual method with a const reference parameter is correctly called from C++.'''
inc = 9
objId = 123
r = Reference(objId)
er = ExtendedReference()
result = er.callUsesConstReferenceVirtual(r, inc)
self.assertEqual(result, objId + inc + er.const_reference_inc)
if __name__ == '__main__':
unittest.main()
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