QCOMPARE(prop.connectNotifySignal(0, obj->metaObject()->indexOfMethod("deleteLater()")), false);
QCOMPARE(prop.connectNotifySignal(obj, obj->metaObject()->indexOfMethod("deleteLater()")), false);
QCOMPARE(prop.connectNotifySignal(obj, -1), false);
QCOMPARE(prop.connectNotifySignal(0, obj->metaObject()->indexOfMethod("deleteLater()")), false);
QCOMPARE(prop.connectNotifySignal(obj, obj->metaObject()->indexOfMethod("deleteLater()")), false);
QCOMPARE(prop.connectNotifySignal(obj, -1), false);