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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 PySide.QtCore import QTimer, QThread
try:
from PySide.QtGui import QSpinBox, QPushButton
except ImportError:
QSpinBox = object
QPushButton = object
QApplication = object
from helper import BasicPySlotCase, UsesQApplication, UsesQCoreApplication
from helper.decorators import requires
@requires('PySide.QtGui')
class ButtonPySlot(UsesQApplication, BasicPySlotCase):
"""Tests the connection of python slots to QPushButton signals"""
def setUp(self):
super(ButtonPySlot, self).setUp()
def tearDown(self):
super(ButtonPySlot, self).setUp()
def testButtonClicked(self):
"""Connection of a python slot to QPushButton.clicked()"""
button = QPushButton('Mylabel')
QObject.connect(button, SIGNAL('clicked()'), self.cb)
self.args = tuple()
button.emit(SIGNAL('clicked()'))
self.assert_(self.called)
def testButtonClick(self):
"""Indirect qt signal emission using the QPushButton.click() method """
button = QPushButton('label')
QObject.connect(button, SIGNAL('clicked()'), self.cb)
self.args = tuple()
button.click()
self.assert_(self.called)
@requires('PySide.QtGui')
class SpinBoxPySlot(UsesQApplication, BasicPySlotCase):
"""Tests the connection of python slots to QSpinBox signals"""
def setUp(self):
super(SpinBoxPySlot, self).setUp()
self.spin = QSpinBox()
def tearDown(self):
del self.spin
super(SpinBoxPySlot, self).tearDown()
def testSpinBoxValueChanged(self):
"""Connection of a python slot to QSpinBox.valueChanged(int)"""
QObject.connect(self.spin, SIGNAL('valueChanged(int)'), self.cb)
self.args = [3]
self.spin.emit(SIGNAL('valueChanged(int)'), *self.args)
self.assert_(self.called)
def testSpinBoxValueChangedImplicit(self):
"""Indirect qt signal emission using QSpinBox.setValue(int)"""
QObject.connect(self.spin, SIGNAL('valueChanged(int)'), self.cb)
self.args = [42]
self.spin.setValue(self.args[0])
self.assert_(self.called)
def atestSpinBoxValueChangedFewArgs(self):
"""Emission of signals with fewer arguments than needed"""
# XXX: PyQt4 crashes on the assertRaises
QObject.connect(self.spin, SIGNAL('valueChanged(int)'), self.cb)
self.args = (554,)
self.assertRaises(TypeError, self.spin.emit, SIGNAL('valueChanged(int)'))
@requires('PySide.QtGui')
class QSpinBoxQtSlots(UsesQApplication):
"""Tests the connection to QSpinBox qt slots"""
qapplication = True
def testSetValueIndirect(self):
"""Indirect signal emission: QSpinBox using valueChanged(int)/setValue(int)"""
spinSend = QSpinBox()
spinRec = QSpinBox()
spinRec.setValue(5)
QObject.connect(spinSend, SIGNAL('valueChanged(int)'), spinRec, SLOT('setValue(int)'))
self.assertEqual(spinRec.value(), 5)
spinSend.setValue(3)
self.assertEqual(spinRec.value(), 3)
self.assertEqual(spinSend.value(), 3)
def testSetValue(self):
"""Direct signal emission: QSpinBox using valueChanged(int)/setValue(int)"""
spinSend = QSpinBox()
spinRec = QSpinBox()
spinRec.setValue(5)
spinSend.setValue(42)
QObject.connect(spinSend, SIGNAL('valueChanged(int)'), spinRec, SLOT('setValue(int)'))
self.assertEqual(spinRec.value(), 5)
self.assertEqual(spinSend.value(), 42)
spinSend.emit(SIGNAL('valueChanged(int)'), 3)
self.assertEqual(spinRec.value(), 3)
#Direct emission shouldn't change the value of the emitter
self.assertEqual(spinSend.value(), 42)
spinSend.emit(SIGNAL('valueChanged(int)'), 66)
self.assertEqual(spinRec.value(), 66)
self.assertEqual(spinSend.value(), 42)
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 QThread.started() to QTimeLine.togglePaused()'''
thread = QThread()
timeline = QTimeLine()
QObject.connect(thread, SIGNAL('started()'),
timeline, SLOT('toggleDirection()'))
QObject.connect(thread, SIGNAL('started()'),
self.exit_app_cb)
orig_dir = timeline.direction()
timer = QTimer.singleShot(1000, self.exit_app_cb) # Just for safety
thread.start()
self.app.exec_()
thread.wait()
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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