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diff --git a/sources/pyside6/tests/util/helper/usesqcoreapplication.py b/sources/pyside6/tests/util/helper/usesqcoreapplication.py
new file mode 100644
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+++ b/sources/pyside6/tests/util/helper/usesqcoreapplication.py
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+#############################################################################
+##
+## Copyright (C) 2020 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.
+##
+## $QT_END_LICENSE$
+##
+#############################################################################
+
+'''Helper classes and functions'''
+
+import unittest
+
+from PySide6.QtCore import QCoreApplication
+
+_core_instance = None
+
+
+class UsesQCoreApplication(unittest.TestCase):
+    '''Helper class for test cases that require an QCoreApplication
+    Just connect or call self.exit_app_cb. When called, will ask
+    self.app to exit.
+    '''
+
+    def setUp(self):
+        '''Set up resources'''
+
+        global _core_instance
+        if _core_instance is None:
+            _core_instance = QCoreApplication([])
+
+        self.app = _core_instance
+
+    def tearDown(self):
+        '''Release resources'''
+        del self.app
+
+    def exit_app_cb(self):
+        '''Quits the application'''
+        self.app.exit(0)