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#############################################################################
##
## Copyright (C) 2016 The Qt Company Ltd.
## Contact: https://www.qt.io/licensing/
##
## This file is part of the test suite of Qt for Python.
##
## $QT_BEGIN_LICENSE:GPL-EXCEPT$
## Commercial License Usage
## Licensees holding valid commercial Qt licenses may use this file in
## accordance with the commercial license agreement provided with the
## Software or, alternatively, in accordance with the terms contained in
## a written agreement between you and The Qt Company. For licensing terms
## and conditions see https://www.qt.io/terms-conditions. For further
## information use the contact form at https://www.qt.io/contact-us.
##
## GNU General Public License Usage
## Alternatively, this file may be used under the terms of the GNU
## General Public License version 3 as published by the Free Software
## Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
## included in the packaging of this file. Please review the following
## information to ensure the GNU General Public License requirements will
## be met: https://www.gnu.org/licenses/gpl-3.0.html.
##
## $QT_END_LICENSE$
##
#############################################################################
from functools import partial
import os
import random
import sys
import unittest
sys.path.append(os.path.join(os.path.dirname(os.path.dirname(os.path.abspath(__file__))), "util"))
from PySide2.QtCore import QObject, SIGNAL
try:
from PySide2.QtWidgets import QPushButton, QSpinBox
hasQtGui = True
except ImportError:
hasQtGui = False
from helper.basicpyslotcase import BasicPySlotCase
from helper.usesqapplication import UsesQApplication
class MultipleSignalConnections(unittest.TestCase):
'''Base class for multiple signal connection testing'''
def run_many(self, sender, signal, emitter, receivers, args=None):
"""Utility method to connect a list of receivers to a signal.
sender - QObject that will emit the signal
signal - string with the signal signature
emitter - the callable that will trigger the signal
receivers - list of BasicPySlotCase instances
args - tuple with the arguments to be sent.
"""
if args is None:
args = tuple()
for rec in receivers:
rec.setUp()
QObject.connect(sender, SIGNAL(signal), rec.cb)
rec.args = tuple(args)
emitter(*args)
for rec in receivers:
self.assertTrue(rec.called)
if hasQtGui:
class QtGuiMultipleSlots(UsesQApplication, MultipleSignalConnections):
'''Multiple connections to QtGui signals'''
def testButtonClick(self):
"""Multiple connections to QPushButton.clicked()"""
sender = QPushButton('button')
receivers = [BasicPySlotCase() for x in range(30)]
self.run_many(sender, 'clicked()', sender.click, receivers)
def testSpinBoxValueChanged(self):
"""Multiple connections to QSpinBox.valueChanged(int)"""
sender = QSpinBox()
#FIXME if number of receivers if higher than 50, segfaults
receivers = [BasicPySlotCase() for x in range(10)]
self.run_many(sender, 'valueChanged(int)', sender.setValue,
receivers, (1,))
if __name__ == '__main__':
unittest.main()
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