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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 signal to signal connections.'''
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
class Sender(QObject):
mysignal_int = Signal(int)
mysignal_int_int = Signal(int, int)
mysignal_string = Signal(str)
class Forwarder(Sender):
forward = Signal()
forward_qobject = Signal(QObject)
def cute_slot():
pass
class TestSignal2SignalConnect(unittest.TestCase):
'''Test case for signal to signal connections'''
def setUp(self):
# Set up the basic resources needed
self.sender = Sender()
self.forwarder = Forwarder()
self.args = None
self.called = False
def tearDown(self):
# Delete used resources
try:
del self.sender
except: # noqa: E722
pass
try:
del self.forwarder
except: # noqa: E722
pass
del self.args
# PYSIDE-535: Need to collect garbage in PyPy to trigger deletion
gc.collect()
def callback_noargs(self):
# Default callback without arguments
self.called = True
def callback_args(self, *args):
# Default callback with arguments
if args == self.args:
self.called = True
else:
raise TypeError("Invalid arguments")
def callback_qobject(self, *args):
# Default callback for QObject as argument
if args[0].objectName() == self.args[0]:
self.called = True
else:
raise TypeError("Invalid arguments")
def testSignalWithoutArguments(self):
self.sender.destroyed.connect(self.forwarder.forward)
self.forwarder.forward.connect(self.callback_noargs)
del self.sender
# PYSIDE-535: Need to collect garbage in PyPy to trigger deletion
gc.collect()
self.assertTrue(self.called)
def testSignalWithOnePrimitiveTypeArgument(self):
self.sender.mysignal_int.connect(self.forwarder.mysignal_int)
self.forwarder.mysignal_int.connect(self.callback_args)
self.args = (19,)
self.sender.mysignal_int.emit(*self.args)
self.assertTrue(self.called)
def testSignalWithMultiplePrimitiveTypeArguments(self):
self.sender.mysignal_int_int.connect(self.forwarder.mysignal_int_int)
self.forwarder.mysignal_int_int.connect(self.callback_args)
self.args = (23, 29)
self.sender.mysignal_int_int.emit(*self.args)
self.assertTrue(self.called)
def testSignalWithOneStringArgument(self):
self.sender.mysignal_string.connect(self.forwarder.mysignal_string)
self.forwarder.mysignal_string.connect(self.callback_args)
self.args = ('myargument',)
self.sender.mysignal_string.emit(*self.args)
self.assertTrue(self.called)
def testSignalWithOneQObjectArgument(self):
self.sender.destroyed.connect(self.forwarder.forward_qobject)
self.forwarder.forward_qobject.connect(self.callback_qobject)
obj_name = 'sender'
self.sender.setObjectName(obj_name)
self.args = (obj_name, )
del self.sender
# PYSIDE-535: Need to collect garbage in PyPy to trigger deletion
gc.collect()
self.assertTrue(self.called)
if __name__ == '__main__':
unittest.main()
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