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# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
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, QStringListModel, Signal, Property, Slot
"""Tests PySide6.QtCore.Property()"""
class TestObject(QObject):
valueChanged = Signal()
def __init__(self, parent=None):
super().__init__(parent)
self._value = -1
self.valueChanged.connect(self._changed)
self.getter_called = 0
self.setter_called = 0
self.changed_emitted = 0
@Slot(int)
def _changed(self):
self.changed_emitted += 1
def getValue(self):
self.getter_called += 1
return self._value
def setValue(self, value):
self.setter_called += 1
if (self._value != value):
self._value = value
self.valueChanged.emit()
value = Property(int, fget=getValue, fset=setValue,
notify=valueChanged)
class TestDerivedObject(QStringListModel):
valueChanged = Signal()
def __init__(self, parent=None):
super().__init__(parent)
self._value = -1
self.valueChanged.connect(self._changed)
self.getter_called = 0
self.setter_called = 0
self.changed_emitted = 0
@Slot(int)
def _changed(self):
self.changed_emitted += 1
def getValue(self):
self.getter_called += 1
return self._value
def setValue(self, value):
self.setter_called += 1
if (self._value != value):
self._value = value
self.valueChanged.emit()
value = Property(int, fget=getValue, fset=setValue,
notify=valueChanged)
class PropertyTest(unittest.TestCase):
def test1Object(self):
"""Basic property test."""
testObject = TestObject()
v = testObject.value
self.assertEqual(v, -1)
self.assertEqual(testObject.getter_called, 1)
testObject.value = 42
v = testObject.value
self.assertEqual(v, 42)
self.assertEqual(testObject.changed_emitted, 1)
self.assertEqual(testObject.setter_called, 1)
self.assertEqual(testObject.getter_called, 2)
def test2DerivedObject(self):
"""PYSIDE-1255: Run the same test for a class inheriting QObject."""
testObject = TestDerivedObject()
v = testObject.value
self.assertEqual(v, -1)
self.assertEqual(testObject.getter_called, 1)
testObject.value = 42
v = testObject.value
self.assertEqual(v, 42)
self.assertEqual(testObject.changed_emitted, 1)
self.assertEqual(testObject.setter_called, 1)
self.assertEqual(testObject.getter_called, 2)
if __name__ == '__main__':
unittest.main()
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