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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.
##
## $QT_END_LICENSE$
##
#############################################################################
''' Test case for QObject.signalsBlocked() and blockSignal()'''
import os
import sys
from tempfile import mkstemp
import unittest
sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
from init_paths import init_test_paths
init_test_paths(False)
from PySide2.QtCore import QObject, SIGNAL, QFile, QSignalBlocker
class TestSignalsBlockedBasic(unittest.TestCase):
'''Basic test case for signalsBlocked'''
def testBasic(self):
'''QObject.signalsBlocked() and blockSignals()
The signals aren't blocked by default.
blockSignals returns the previous value'''
obj = QObject()
self.assertTrue(not obj.signalsBlocked())
self.assertTrue(not obj.blockSignals(True))
self.assertTrue(obj.signalsBlocked())
self.assertTrue(obj.blockSignals(False))
blocker = QSignalBlocker(obj)
self.assertTrue(obj.signalsBlocked())
blocker.unblock()
self.assertTrue(not obj.signalsBlocked())
blocker.reblock()
self.assertTrue(obj.signalsBlocked())
del blocker
self.assertTrue(not obj.signalsBlocked())
class TestSignalsBlocked(unittest.TestCase):
'''Test case to check if the signals are really blocked'''
def setUp(self):
#Set up the basic resources needed
self.obj = QObject()
self.args = tuple()
self.called = False
def tearDown(self):
#Delete used resources
del self.obj
del self.args
def callback(self, *args):
#Default callback
if args == self.args:
self.called = True
else:
raise TypeError("Invalid arguments")
def testShortCircuitSignals(self):
#Blocking of Python short-circuit signals
QObject.connect(self.obj, SIGNAL('mysignal()'), self.callback)
self.obj.emit(SIGNAL('mysignal()'))
self.assertTrue(self.called)
self.called = False
self.obj.blockSignals(True)
self.obj.emit(SIGNAL('mysignal()'))
self.assertTrue(not self.called)
def testPythonSignals(self):
#Blocking of Python typed signals
QObject.connect(self.obj, SIGNAL('mysignal(int,int)'), self.callback)
self.args = (1, 3)
self.obj.emit(SIGNAL('mysignal(int,int)'), *self.args)
self.assertTrue(self.called)
self.called = False
self.obj.blockSignals(True)
self.obj.emit(SIGNAL('mysignal(int,int)'), *self.args)
self.assertTrue(not self.called)
class TestQFileSignalBlocking(unittest.TestCase):
'''Test case for blocking the signal QIODevice.aboutToClose()'''
def setUp(self):
#Set up the needed resources - A temp file and a QFile
self.called = False
handle, self.filename = mkstemp()
os.close(handle)
self.qfile = QFile(self.filename)
def tearDown(self):
#Release acquired resources
os.remove(self.filename)
del self.qfile
def callback(self):
#Default callback
self.called = True
def testAboutToCloseBlocking(self):
#QIODevice.aboutToClose() blocking
QObject.connect(self.qfile, SIGNAL('aboutToClose()'), self.callback)
self.assertTrue(self.qfile.open(QFile.ReadOnly))
self.qfile.close()
self.assertTrue(self.called)
self.called = False
self.qfile.blockSignals(True)
self.assertTrue(self.qfile.open(QFile.ReadOnly))
self.qfile.close()
self.assertTrue(not self.called)
if __name__ == '__main__':
unittest.main()
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