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#!/usr/bin/env python
# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
"""Tests covering signal emission and receiving to python slots"""
import functools
import os
import sys
import unittest
from pathlib import Path
sys.path.append(os.fspath(Path(__file__).resolve().parents[1]))
from init_paths import init_test_paths
init_test_paths(False)
from PySide6.QtCore import QObject, SIGNAL, SLOT, QProcess, QTimeLine
from helper.basicpyslotcase import BasicPySlotCase
from helper.usesqcoreapplication import 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)
called = False
def someSlot(args=None):
global called
called = True
class DynamicSignalsToFuncPartial(UsesQCoreApplication):
def testIt(self):
global called
called = False
o = QObject()
o.connect(o, SIGNAL("ASignal()"), functools.partial(someSlot, "partial .."))
o.emit(SIGNAL("ASignal()"))
self.assertTrue(called)
class EmitUnknownType(UsesQCoreApplication):
def testIt(self):
a = QObject()
a.connect(SIGNAL('foobar(Dummy)'), lambda x: 42) # Just connect with an unknown type
self.assertRaises(TypeError, a.emit, SIGNAL('foobar(Dummy)'), 22)
class EmitEnum(UsesQCoreApplication):
"""Test emission of enum arguments"""
def slot(self, arg):
self.arg = arg
def testIt(self):
self.arg = None
p = QProcess()
p.stateChanged.connect(self.slot)
p.stateChanged.emit(QProcess.NotRunning)
self.assertEqual(self.arg, QProcess.NotRunning)
if __name__ == '__main__':
unittest.main()
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