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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 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 UsesQApplication
from PySide2.QtCore import *
from PySide2.QtWidgets import *
class MyLayout(QLayout):
def __init__(self, parent=None):
QLayout.__init__(self, parent)
self._list = []
def addItem(self, item):
self.add(item)
def addWidget(self, widget):
self.add(QWidgetItem(widget))
def itemAt(self, index):
if index < len(self._list):
return self._list[index]
return None
def count(self):
return len(self._list)
def add(self, item):
self._list.append(item)
class MissingItemAtLayout(QLayout):
def __init__(self, parent=None):
QLayout.__init__(self, parent)
self._list = []
def addItem(self, item):
self.add(item)
def addWidget(self, widget):
self.add(QWidgetItem(widget))
def count(self):
return len(self._list)
def add(self, item):
self._list.append(item)
#Test if a layout implemented in python, the QWidget.setLayout works
#fine because this implement som layout functions used in glue code of
#QWidget, then in c++ when call a virtual function this need call the QLayout
#function implemented in python
class QLayoutTest(UsesQApplication):
def testOwnershipTransfer(self):
b = QPushButton("teste")
l = MyLayout()
l.addWidget(b)
self.assertEqual(sys.getrefcount(b), 2)
w = QWidget()
#transfer ref
w.setLayout(l)
self.assertEqual(sys.getrefcount(b), 3)
def testReferenceTransfer(self):
b = QPushButton("teste")
l = QHBoxLayout()
# keep ref
l.addWidget(b)
self.assertEqual(sys.getrefcount(b), 3)
w = QWidget()
# transfer ref
w.setLayout(l)
self.assertEqual(sys.getrefcount(b), 3)
# release ref
del w
self.assertEqual(sys.getrefcount(b), 2)
def testMissingFunctions(self):
w = QWidget()
b = QPushButton("test")
l = MissingItemAtLayout()
l.addWidget(b)
self.assertRaises(RuntimeError, w.setLayout, l)
def testQFormLayout(self):
w = QWidget()
formLayout = QFormLayout()
spacer = QSpacerItem(100, 30)
formLayout.setItem(0, QFormLayout.SpanningRole, spacer)
w.setLayout(formLayout)
w.show()
QTimer.singleShot(10, w.close)
self.app.exec_()
del w
self.assertRaises(RuntimeError, spacer.isEmpty)
if __name__ == '__main__':
unittest.main()
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