def test_mean():
    (chunk, chunk_expr), (agg, agg_expr) = split(t, t.amount.mean())

    assert chunk.schema >= t.schema
    assert chunk_expr.isidentical(summary(total=chunk.amount.sum(),
                                          count=chunk.amount.count(),
                                          keepdims=True))

    assert isrecord(agg.dshape.measure)
    assert agg_expr.isidentical(agg.total.sum() / agg['count'].sum())
dataset/ETHPy150Open blaze/blaze/blaze/expr/tests/test_split.py/test_mean/operator `==` -> `>=`