1 files changed, 40 insertions, 0 deletions
diff --git a/sources/pyside6/tests/QtCore/mockclass_test.py b/sources/pyside6/tests/QtCore/mockclass_test.py
new file mode 100644
index 000000000..c7e465b24
--- /dev/null
+++ b/sources/pyside6/tests/QtCore/mockclass_test.py
@@ -0,0 +1,40 @@
+# 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 case for PySide bug 634
+# http://bugs.pyside.org/show_bug.cgi?id=634
+# Marcus Lindblom <macke@yar.nu>; 2011-02-16
+
+import os
+import sys
+import unittest
+
+from pathlib import Path
+sys.path.append(os.fspath(Path(__file__).resolve().parents[1]))
+from init_paths import init_test_paths
+init_test_paths(False)
+
+from PySide6.QtCore import QCoreApplication
+
+
+class Mock(object):
+    def __init__(self):
+        self.called = False
+        self.return_value = None
+
+    def __call__(self, *args, **kwargs):
+        self.called = True
+        return self.return_value
+
+
+class MockClassTest(unittest.TestCase):
+    def testMockQCoreApplication(self):
+        mock = Mock()
+        setattr(QCoreApplication, 'instance', mock)
+        QCoreApplication.instance()
+        self.assertTrue(mock.called)
+
+
+if __name__ == '__main__':
+    unittest.main()
+