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#!/usr/bin/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
''' PYSIDE-315: https://bugreports.qt.io/browse/PYSIDE-315
Test that creating a signal in the wrong order triggers a warning. '''
import os
import sys
import unittest
import warnings
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)
import PySide6.QtCore as QtCore
class Whatever(QtCore.QObject):
echoSignal = QtCore.Signal(str)
def __init__(self):
super().__init__()
self.echoSignal.connect(self.mySlot)
def mySlot(self, v):
pass
class WarningTest(unittest.TestCase):
def testSignalSlotWarning(self):
# we create an object. This gives no warning.
obj = Whatever()
# then we insert a signal after slots have been created.
setattr(Whatever, "foo", QtCore.Signal())
with warnings.catch_warnings(record=True) as w:
# Cause all warnings to always be triggered.
warnings.simplefilter("always")
# Trigger a warning.
obj.foo.connect(obj.mySlot)
# Verify some things
assert issubclass(w[-1].category, RuntimeWarning)
assert "*** Sort Warning ***" in str(w[-1].message)
# note that this warning cannot be turned into an error (too hard)
if __name__ == "__main__":
unittest.main()
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