def METHOD_NAME(self) -> None:
    """Test that no collapsing will happen when all groups are expanded."""
    source = self._get_source_graph()
    collapser = Collapser(["node_group_a", "node_group_a:b", "node_group_a:b:c"])
    collapsed = collapser.collapse(graph=source)
    self.assertEqual(source, collapsed)