1 files changed, 107 insertions, 0 deletions
diff --git a/sources/shiboken6/tests/samplebinding/reference_test.py b/sources/shiboken6/tests/samplebinding/reference_test.py
new file mode 100644
index 000000000..1b6dd3a7a
--- /dev/null
+++ b/sources/shiboken6/tests/samplebinding/reference_test.py
@@ -0,0 +1,107 @@
+#!/usr/bin/env python
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+'''Test cases for methods that receive references to objects.'''
+
+import os
+import sys
+import unittest
+
+from pathlib import Path
+sys.path.append(os.fspath(Path(__file__).resolve().parents[1]))
+from shiboken_paths import init_paths
+init_paths()
+
+from sample import Reference, Str
+
+
+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.assertFalse(bool(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)  # noqa: F841
+        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()