diff options
Diffstat (limited to 'sources/pyside6/tests/signals/static_metaobject_test.py')
-rw-r--r-- | sources/pyside6/tests/signals/static_metaobject_test.py | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/sources/pyside6/tests/signals/static_metaobject_test.py b/sources/pyside6/tests/signals/static_metaobject_test.py new file mode 100644 index 000000000..d7bf73e44 --- /dev/null +++ b/sources/pyside6/tests/signals/static_metaobject_test.py @@ -0,0 +1,83 @@ +#!/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 gc +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, SIGNAL +from helper.usesqapplication import UsesQApplication + + +class Sender(QObject): + + foo = Signal() + foo2 = Signal() + + +class MyObject(QObject): + + foo2 = Signal() + + def __init__(self, parent=None): + super().__init__(parent) + self._slotCalledCount = 0 + + # this '@Slot()' is needed to get the right sort order in testSharedSignalEmission. + # For some reason, it also makes the tests actually work! + @Slot() + def mySlot(self): + self._slotCalledCount = self._slotCalledCount + 1 + + +class StaticMetaObjectTest(UsesQApplication): + + def testSignalPropagation(self): + """Old style, dynamic signal creation.""" + o = QObject() + o2 = MyObject() + + # SIGNAL foo not created yet + self.assertEqual(o.metaObject().indexOfSignal("foo()"), -1) + + o.connect(SIGNAL("foo()"), o2.mySlot) + # SIGNAL foo create after connect + self.assertTrue(o.metaObject().indexOfSignal("foo()") > 0) + + # SIGNAL does not propagate to others objects of the same type + self.assertEqual(o2.metaObject().indexOfSignal("foo()"), -1) + + del o + del o2 + # PYSIDE-535: Need to collect garbage in PyPy to trigger deletion + gc.collect() + o = MyObject() + # The SIGNAL was destroyed with old objects + self.assertEqual(o.metaObject().indexOfSignal("foo()"), -1) + + def testSharedSignalEmission(self): + o = Sender() + m = MyObject() + + o.foo2.connect(m.mySlot) + m.foo2.connect(m.mySlot) + o.foo2.emit() + self.assertEqual(m._slotCalledCount, 1) + del o + # PYSIDE-535: Need to collect garbage in PyPy to trigger deletion + gc.collect() + m.foo2.emit() + self.assertEqual(m._slotCalledCount, 2) + + +if __name__ == '__main__': + unittest.main() |