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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
import os
import gc
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.QtGui import QStandardItemModel
from PySide6.QtWidgets import QApplication, QTreeView
try:
from sys import gettotalrefcount
skiptest = False
except ImportError:
skiptest = True
class ConnectTest(unittest.TestCase):
def callback(self, o):
print("callback")
self._called = o
def testNoLeaks_ConnectAndDisconnect(self):
self._called = None
app = QApplication([]) # noqa: F841
o = QTreeView()
o.setModel(QStandardItemModel())
o.selectionModel().destroyed.connect(self.callback)
o.selectionModel().destroyed.disconnect(self.callback)
gc.collect()
# if this is no debug build, then we check at least that
# we do not crash any longer.
for idx in range(200):
# PYSIDE-2230: Warm-up is necessary before measuring, because
# the code changes the constant parts after some time.
o.selectionModel().destroyed.connect(self.callback)
o.selectionModel().destroyed.disconnect(self.callback)
if not skiptest:
total = gettotalrefcount()
for idx in range(1000):
o.selectionModel().destroyed.connect(self.callback)
o.selectionModel().destroyed.disconnect(self.callback)
gc.collect()
if not skiptest:
delta = gettotalrefcount() - total
print("delta total refcount =", delta)
self.assertTrue(abs(delta) < 10)
if __name__ == '__main__':
unittest.main()
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