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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 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(True)
from PySide6.QtCore import QObject, Signal
from testbinding import TestObject
class Foo(QObject):
bar = Signal()
class TestDisconnect(unittest.TestCase):
def theSlot1(self):
self.called1 = True
def theSlot2(self):
self.called2 = True
def testIt(self):
self.called1 = False
self.called2 = False
f = Foo()
f.bar.connect(self.theSlot1)
f.bar.connect(self.theSlot2)
f.bar.emit()
self.assertTrue(self.called1)
self.assertTrue(self.called2)
self.called1 = False
self.called2 = False
f.bar.disconnect()
f.bar.emit()
self.assertFalse(self.called1)
self.assertFalse(self.called2)
def testDuringCallback(self):
""" Test to see if the C++ object for a connection is accessed after the
method returns. This causes a segfault if the memory that was used by the
C++ object has been reused. """
self.called = False
obj = TestObject(0)
def callback():
obj.signalWithDefaultValue.disconnect(callback)
# Connect more callbacks to try to overwrite memory
for i in range(1000):
obj.signalWithDefaultValue.connect(lambda: None)
self.called = True
# A non-None return value is needed
return True
obj.signalWithDefaultValue.connect(callback)
obj.signalWithDefaultValue.emit()
self.assertTrue(self.called)
if __name__ == '__main__':
unittest.main()
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