def test_type(self):
        rset = event.ResultSet()
        with pytest.raises(NotImplementedError):
            rset.extend([])
        with pytest.raises(NotImplementedError):
            rset.extend(False)
def _init_liststore(self):
        """Creates the liststore"""
        self.liststore = Gtk.ListStore(object, GdkPixbuf.Pixbuf, str, str)
        self.set_model(self.liststore)