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''' Test case for QObject.signalsBlocked() and blockSignal()'''
import unittest
import os
from tempfile import mkstemp
from PySide.QtCore import QObject, SIGNAL, QFile
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.assert_(not obj.signalsBlocked())
self.assert_(not obj.blockSignals(True))
self.assert_(obj.signalsBlocked())
self.assert_(obj.blockSignals(False))
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.assert_(self.called)
self.called = False
self.obj.blockSignals(True)
self.obj.emit(SIGNAL('mysignal'))
self.assert_(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.assert_(self.called)
self.called = False
self.obj.blockSignals(True)
self.obj.emit(SIGNAL('mysignal(int,int)'), *self.args)
self.assert_(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.assert_(self.qfile.open(QFile.ReadOnly))
self.qfile.close()
self.assert_(self.called)
self.called = False
self.qfile.blockSignals(True)
self.assert_(self.qfile.open(QFile.ReadOnly))
self.qfile.close()
self.assert_(not self.called)
if __name__ == '__main__':
unittest.main()
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