from qubed import Qube


def test_leaf_conservation():
    q = Qube.from_dict({
        "class=d1": {"dataset=climate-dt" : {  
            "time=0000": {"param=130/134/137/146/147/151/165/166/167/168/169" : {}},
            "time=0001": {"param=130": {}},
                    }}})

    r  = Qube.from_datacube({
        "class": "d1",
        "dataset": "climate-dt",
        "time": "0001",
        "param": "134"
    })

    assert q.n_leaves + r.n_leaves == (q | r).n_leaves