def METHOD_NAME(node):
    """Test visitor of Subscript node within a del statement."""
    del_node = nodes.Delete()
    del_node.postinit([node])
    module, _ = cs._parse_text(del_node)
    for subscript_node in module.nodes_of_class(nodes.Subscript):
        assert subscript_node.inf_type.getValue() == type(None)