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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 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 cases for methods that receive references to objects.'''
+
+import sys
+import unittest
+
+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()
+