class LessLeakyTests(TestCase):
def setUp(self):
self.qapp = QCoreApplication.instance() or QCoreApplication()
self.test_qobj = QObject()
self.addCleanup(self.release_qt_resources)
def release_qt_resources(self):
self.test_qobj.deleteLater()
self.qapp.sendPostedEvents(event_type=QEvent.DeferredDelete)
self.qapp.processEvents()
def _single_shot(self, timeout_ms: int, func: Callable[[], Any]):
timer = QTimer(parent=self.test_qobj)
timer.setSingleShot(True)
timer.setInterval(timeout_ms)
timer.timeout.connect(func)
timer.start()
def test_one(self):
def do_task():
# This would be the main test logic, running in the qapp's event loop
# Pretend that the test takes about 3 seconds and at the end of which quit() is called to signify a successful test
self._single_shot(3000, self.qapp.quit)
self._single_shot(0, do_task)
self._fail_if_timeout()
self.assertEqual(0, self.qapp.exec_())
def test_two(self):
def do_task():
# This test takes about 3 seconds as well before succeeding
self._single_shot(3000, self.qapp.quit)
self._single_shot(0, do_task)
self._fail_if_timeout()
self.assertEqual(0, self.qapp.exec_())
def _fail_if_timeout(self):
self._single_shot(5000, lambda: self.qapp.exit(-1))
def testCase(self):
o = QObject()
o.deleteLater()
del o
QTimer.singleShot(100, self.app.quit)
self.app.exec_()
def testCase(self):
o = QObject()
o.deleteLater()
del o
QTimer.singleShot(100, self.app.quit)
self.app.exec_()
def safeDelete(obj: QObject) -> None:
""" Calls deleteLater() on a QObject, doing nothing if the object was already deleted """
if obj and shiboken2.isValid(obj):
obj.deleteLater()
