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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
''' Test case for QObject.receivers()'''
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, SIGNAL, SLOT
def cute_slot():
pass
class TestQObjectReceivers(unittest.TestCase):
'''Test case for QObject::receivers'''
def testBasic(self):
sender = QObject()
receiver1 = QObject()
receiver2 = QObject()
self.assertEqual(sender.receivers(SIGNAL("")), 0)
sender.destroyed.connect(receiver1.deleteLater)
self.assertEqual(sender.receivers(SIGNAL("destroyed()")), 1)
sender.destroyed.connect(receiver2.deleteLater)
self.assertEqual(sender.receivers(SIGNAL("destroyed()")), 2)
sender.disconnect(sender, SIGNAL("destroyed()"), receiver2, SLOT("deleteLater()"))
self.assertEqual(sender.receivers(SIGNAL("destroyed()")), 1)
del receiver2
del receiver1
del sender
# PYSIDE-535: Need to collect garbage in PyPy to trigger deletion
gc.collect()
def testPySlots(self):
sender = QObject()
receiver = QObject()
sender.destroyed.connect(cute_slot)
self.assertEqual(sender.receivers(SIGNAL("destroyed( )")), 1)
sender.destroyed.connect(receiver.deleteLater)
self.assertEqual(sender.receivers(SIGNAL("destroyed()")), 2)
del sender
del receiver
# PYSIDE-535: Need to collect garbage in PyPy to trigger deletion
gc.collect()
def testPySignals(self):
sender = QObject()
receiver = QObject()
sender.connect(sender, SIGNAL("some_dynamic_signal()"), cute_slot)
self.assertEqual(sender.receivers(SIGNAL("some_dynamic_signal( )")), 1)
sender.connect(sender, SIGNAL("some_dynamic_signal()"), receiver, SLOT("deleteLater()"))
self.assertEqual(sender.receivers(SIGNAL("some_dynamic_signal( )")), 2)
if __name__ == '__main__':
unittest.main()
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