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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 # noqa: E402
init_test_paths(False)
from helper.usesqapplication import UsesQApplication # noqa: E402, F401
from PySide6.QtCore import QObject, QUrl, Property, qInstallMessageHandler # noqa: E402
from PySide6.QtQml import ListProperty, QmlElement # noqa: E402
from PySide6.QtQuick import QQuickView # noqa: E402
QML_IMPORT_NAME = "test.ListPropertyTest"
QML_IMPORT_MAJOR_VERSION = 1
output_messages = []
def message_handler(mode, context, message):
global output_messages
output_messages.append(f"{message}")
class InheritsQObject(QObject):
pass
def dummyFunc():
pass
@QmlElement
class Person(QObject):
def __init__(self, parent=None):
super().__init__(parent=None)
self._name = ''
self._friends = []
def appendFriend(self, friend):
self._friends.append(friend)
def friendCount(self):
return len(self._friends)
def friend(self, index):
return self._friends[index]
def removeLastItem(self):
if len(self._friends) > 0:
self._friends.pop()
def replace(self, index, friend):
if 0 <= index < len(self._friends):
self._friends[index] = friend
def clear(self):
self._friends.clear()
@Property(str, final=True)
def name(self):
return self._name
@name.setter
def name(self, value):
self._name = value
friends = ListProperty(QObject, append=appendFriend, count=friendCount, at=friend,
removeLast=removeLastItem, replace=replace, clear=clear)
class TestListProperty(UsesQApplication):
def testIt(self):
# Verify that type checking works properly
type_check_error = False
try:
ListProperty(QObject)
ListProperty(InheritsQObject)
except Exception:
type_check_error = True
self.assertFalse(type_check_error)
try:
ListProperty(int)
except TypeError:
type_check_error = True
self.assertTrue(type_check_error)
# Verify that method validation works properly
method_check_error = False
try:
ListProperty(QObject, append=None, at=None, count=None, replace=None, clear=None,
removeLast=None) # Explicitly setting None
ListProperty(QObject, append=dummyFunc)
ListProperty(QObject, count=dummyFunc, at=dummyFunc)
except Exception:
method_check_error = True
self.assertFalse(method_check_error)
try:
ListProperty(QObject, append=QObject())
except Exception:
method_check_error = True
self.assertTrue(method_check_error)
def testListPropParameters(self):
global output_messages
qInstallMessageHandler(message_handler)
view = QQuickView()
file = Path(__file__).resolve().parent / 'listproperty.qml'
self.assertTrue(file.is_file())
view.setSource(QUrl.fromLocalFile(file))
view.show()
self.assertEqual(output_messages[0], "List length: 3")
self.assertEqual(output_messages[1], "First element: Alice")
self.assertEqual(output_messages[2], "Removing last item: Charlie")
self.assertEqual(output_messages[3], "Replacing last item: Bob")
self.assertEqual(output_messages[4], "Replaced last item: David")
self.assertEqual(output_messages[5], "List length after clearing: 0")
if __name__ == '__main__':
unittest.main()
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