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#!/usr/bin/python
# -*- coding: utf-8 -*-
#############################################################################
##
## Copyright (C) 2016 The Qt Company Ltd.
## Contact: https://www.qt.io/licensing/
##
## This file is part of the test suite of PySide2.
##
## $QT_BEGIN_LICENSE:GPL-EXCEPT$
## 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.
##
## $QT_END_LICENSE$
##
#############################################################################
import unittest
import sys
from helper import adjust_filename
from PySide2.QtCore import QObject, QUrl, Slot, QTimer
from PySide2.QtGui import QGuiApplication
from PySide2.QtQml import QQmlIncubationController, VolatileBool
from PySide2.QtQuick import QQuickView
class CustomIncubationController(QObject, QQmlIncubationController):
def __init__(self, test):
QObject.__init__(self)
QQmlIncubationController.__init__(self)
self.test = test
self.interrupted = False
# Incubate every 50 milliseconds
self.startTimer(50)
self.incubationShouldContinue = VolatileBool(True)
self.test.assertEqual(self.incubationShouldContinue.get(), True)
@Slot()
def interrupter(self):
if not self.interrupted:
self.interrupted = True
self.incubationShouldContinue.set(False)
self.test.assertEqual(self.incubationShouldContinue.get(), False)
QTimer.singleShot(0, QGuiApplication.instance().quit)
def timerEvent(self, ev):
# Incubate items for 2000 milliseconds, or until the volatile bool is set to false.
self.incubateWhile(self.incubationShouldContinue, 2000)
class TestBug(unittest.TestCase):
def testIncubateWhileCall(self):
app = QGuiApplication(sys.argv)
view = QQuickView()
controller = CustomIncubationController(self)
view.engine().setIncubationController(controller)
view.setResizeMode(QQuickView.SizeRootObjectToView)
view.setSource(QUrl.fromLocalFile(adjust_filename('qqmlincubator_incubateWhile.qml',
__file__)))
view.show()
root = view.rootObject()
# The QML code will issue an interrupt signal after half of its items are loaded.
root.shouldInterrupt.connect(controller.interrupter)
res = app.exec_()
itemsToCreate = root.property("itemsToCreate")
loadedItems = root.property("loadedItems")
self.assertEqual(loadedItems, itemsToCreate / 2)
# Finish incubating the remaining items.
controller.incubateFor(1000)
loadedItems = root.property("loadedItems")
self.assertEqual(loadedItems, itemsToCreate)
# Deleting the view before it goes out of scope is required to make sure all child QML
# instances are destroyed in the correct order.
del view
del app
if __name__ == '__main__':
unittest.main()
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