1#!/usr/bin/env python
2# -*- coding: utf-8 -*-
3
4#############################################################################
5##
6## Copyright (C) 2016 The Qt Company Ltd.
7## Contact: https://www.qt.io/licensing/
8##
9## This file is part of the test suite of Qt for Python.
10##
11## $QT_BEGIN_LICENSE:GPL-EXCEPT$
12## Commercial License Usage
13## Licensees holding valid commercial Qt licenses may use this file in
14## accordance with the commercial license agreement provided with the
15## Software or, alternatively, in accordance with the terms contained in
16## a written agreement between you and The Qt Company. For licensing terms
17## and conditions see https://www.qt.io/terms-conditions. For further
18## information use the contact form at https://www.qt.io/contact-us.
19##
20## GNU General Public License Usage
21## Alternatively, this file may be used under the terms of the GNU
22## General Public License version 3 as published by the Free Software
23## Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
24## included in the packaging of this file. Please review the following
25## information to ensure the GNU General Public License requirements will
26## be met: https://www.gnu.org/licenses/gpl-3.0.html.
27##
28## $QT_END_LICENSE$
29##
30#############################################################################
31
32import os
33import sys
34import unittest
35
36sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
37from init_paths import init_test_paths
38init_test_paths(False)
39
40from PySide2.QtCore import QObject, QCoreApplication, QTimeLine, Signal, Slot
41from helper.usesqcoreapplication import UsesQCoreApplication
42
43class ExtQObject(QObject):
44    signalbetween = Signal('qreal')
45
46    def __init__(self):
47        QObject.__init__(self)
48        self.counter = 0
49
50    @Slot('qreal')
51    def foo(self, value):
52        self.counter += 1
53
54
55class SignaltoSignalTest(UsesQCoreApplication):
56
57    def setUp(self):
58        UsesQCoreApplication.setUp(self)
59        self.receiver = ExtQObject()
60        self.timeline = QTimeLine(100)
61
62    def tearDown(self):
63        del self.timeline
64        del self.receiver
65        UsesQCoreApplication.tearDown(self)
66
67    def testSignaltoSignal(self):
68        self.timeline.setUpdateInterval(10)
69
70        self.timeline.finished.connect(self.app.quit)
71
72        self.timeline.valueChanged.connect(self.receiver.signalbetween)
73        self.receiver.signalbetween.connect(self.receiver.foo)
74
75        self.timeline.start()
76
77        self.app.exec_()
78
79        self.assertTrue(self.receiver.counter > 1)
80
81
82if __name__ == '__main__':
83    unittest.main()
84
85