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import sys
import unittest
import random
from functools import partial
from PySide.QtCore import QObject, SIGNAL, QProcess
from helper import BasicPySlotCase, UsesQCoreApplication
def random_gen(count=50, largest=49, lowest=0):
for i in range(count):
yield random.randint(lowest, largest)
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.assert_(rec.called)
class PythonMultipleSlots(UsesQCoreApplication, MultipleSignalConnections):
'''Multiple connections to python signals'''
def testPythonSignal(self):
"""Multiple connections to a python signal (short-circuit)"""
class Dummy(QObject):
pass
for test in random_gen(20):
sender = Dummy()
receivers = [BasicPySlotCase() for x in range(10)]
self.run_many(sender, 'foobar', partial(sender.emit,
SIGNAL('foobar')), receivers, (test, ))
class QProcessMultipleSlots(UsesQCoreApplication, MultipleSignalConnections):
'''Multiple connections to QProcess signals'''
def testQProcessStarted(self):
'''Multiple connections to QProcess.started()'''
sender = QProcess()
receivers = [BasicPySlotCase() for x in range(10)]
def start_proc(*args):
sender.start(sys.executable, ['-c', '""'])
sender.waitForFinished()
self.run_many(sender, 'started()', start_proc, receivers)
def testQProcessFinished(self):
'''Multiple connections to QProcess.finished(int)'''
sender = QProcess()
receivers = [BasicPySlotCase() for x in range(10)]
def start_proc(*args):
sender.start(sys.executable, ['-c', '""'])
sender.waitForFinished()
self.run_many(sender, 'finished(int)', start_proc, receivers, (0,))
if __name__ == '__main__':
unittest.main()
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