def METHOD_NAME(op, expected):
    data = pd.timedelta_range("0 days", "10 days", freq="D")
    con = Backend().connect(
        {"df1": pd.DataFrame({"td": data}), "df2": pd.DataFrame({"td": data})}
    )
    t1 = con.table("df1")
    expr = op(t1.td, t1.td)
    result = expr.execute()
    expected = pd.Series(expected(data, data), name="td")
    tm.assert_series_equal(result, expected)