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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
""" Unittest for bug #576 """
""" http://bugs.openbossa.org/show_bug.cgi?id=576 """
import gc
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 QObject
from PySide6.QtWidgets import QApplication, QPushButton, QWidget
class Bug576(unittest.TestCase):
def onButtonDestroyed(self, button):
self._destroyed = True
self.assertTrue(isinstance(button, QPushButton))
@unittest.skipUnless(hasattr(sys, "getrefcount"), f"{sys.implementation.name} has no refcount")
def testWidgetParent(self):
self._destroyed = False
app = QApplication(sys.argv)
w = QWidget()
b = QPushButton("test")
b.destroyed[QObject].connect(self.onButtonDestroyed)
self.assertEqual(sys.getrefcount(b), 2)
b.setParent(w)
self.assertEqual(sys.getrefcount(b), 3)
b.parent()
self.assertEqual(sys.getrefcount(b), 3)
b.setParent(None)
self.assertEqual(sys.getrefcount(b), 2)
del b
# PYSIDE-535: Need to collect garbage in PyPy to trigger deletion
gc.collect()
self.assertTrue(self._destroyed)
if __name__ == '__main__':
unittest.main()
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