def METHOD_NAME(get_dataframe):
    """
    Test that outer_join returns appropriate pieces
    """
    flow = Flows(
        daily_location("2016-01-01", spatial_unit=make_spatial_unit("admin", level=3)),
        daily_location("2016-01-02", spatial_unit=make_spatial_unit("admin", level=3)),
        join_type="left outer",
    )
    out = get_dataframe(flow)
    assert out.pcod_to.isna().any()
    assert not out.pcod_from.isna().any()