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# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
'''Helper classes and functions'''
import gc
import sys
import unittest
# This version avoids explicit import in order to adapt to the
# import decision of the main module.
# This should work with every compatible library.
class UsesQApplication(unittest.TestCase):
'''Helper class to provide QApplication instances'''
qapplication = True
def setUp(self):
'''Creates the QApplication instance'''
module = sys.modules[list(_ for _ in sys.modules if _.endswith(".QtWidgets"))[0]]
QApplication = getattr(module, "QApplication")
# Simple way of making instance a singleton
super(UsesQApplication, self).setUp()
self.app = QApplication.instance() or QApplication([])
def tearDown(self):
'''Deletes the reference owned by self'''
del self.app
# PYSIDE-535: Need to collect garbage in PyPy to trigger deletion
gc.collect()
super(UsesQApplication, self).tearDown()
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