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#!/usr/bin/env python
"""Tests covering signal emission and receiving to python slots"""
import sys
import unittest
from PySide.QtCore import QObject, SIGNAL, SLOT, QProcess, QTimeLine
from helper import BasicPySlotCase, UsesQCoreApplication
class ArgsOnEmptySignal(UsesQCoreApplication):
'''Trying to emit a signal without arguments passing some arguments'''
def testArgsToNoArgsSignal(self):
'''Passing arguments to a signal without arguments'''
process = QProcess()
self.assertRaises(TypeError, process.emit, SIGNAL('started()'), 42)
class MoreArgsOnEmit(UsesQCoreApplication):
'''Trying to pass more args than needed to emit (signals with args)'''
def testMoreArgs(self):
'''Passing more arguments than needed'''
process = QProcess()
self.assertRaises(TypeError, process.emit, SIGNAL('finished(int)'), 55, 55)
class Dummy(QObject):
'''Dummy class'''
pass
class PythonSignalToCppSlots(UsesQCoreApplication):
'''Connect python signals to C++ slots'''
def testWithoutArgs(self):
'''Connect python signal to QTimeLine.toggleDirection()'''
timeline = QTimeLine()
dummy = Dummy()
QObject.connect(dummy, SIGNAL('dummy()'),
timeline, SLOT('toggleDirection()'))
orig_dir = timeline.direction()
dummy.emit(SIGNAL('dummy()'))
new_dir = timeline.direction()
if orig_dir == QTimeLine.Forward:
self.assertEqual(new_dir, QTimeLine.Backward)
else:
self.assertEqual(new_dir, QTimeLine.Forward)
def testWithArgs(self):
'''Connect python signals to QTimeLine.setCurrentTime(int)'''
timeline = QTimeLine()
dummy = Dummy()
QObject.connect(dummy, SIGNAL('dummy(int)'),
timeline, SLOT('setCurrentTime(int)'))
current = timeline.currentTime()
dummy.emit(SIGNAL('dummy(int)'), current+42)
self.assertEqual(timeline.currentTime(), current+42)
class CppSignalsToCppSlots(UsesQCoreApplication):
'''Connection between C++ slots and signals'''
def testWithoutArgs(self):
'''Connect QProcess.started() to QTimeLine.togglePaused()'''
process = QProcess()
timeline = QTimeLine()
QObject.connect(process, SIGNAL('finished(int, QProcess::ExitStatus)'),
timeline, SLOT('toggleDirection()'))
orig_dir = timeline.direction()
process.start(sys.executable, ['-c', '"print 42"'])
process.waitForFinished()
new_dir = timeline.direction()
if orig_dir == QTimeLine.Forward:
self.assertEqual(new_dir, QTimeLine.Backward)
else:
self.assertEqual(new_dir, QTimeLine.Forward)
if __name__ == '__main__':
unittest.main()
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