def METHOD_NAME(metafunc):
    """Test parameterization routine for pytest.
    Fixtures parameterized
    ----------------------
    scitype : str - scitypes
    from_mtype : str - mtype of "from" conversion to test, belongs to scitype
    to_mtype : str - mtype of conversion target ("to") to test, belongs to scitype
    fixture_index : int - index of fixture tuple use for conversion
    """
    # we assume all four arguments are present in the test below
    keys = _generate_fixture_tuples()
    ids = []
    for tuple in keys:
        ids += [f"{tuple[0]}-from:{tuple[1]}-to:{tuple[2]}-fixture:{tuple[3]}"]
    # parameterize test with from-mtpes
    metafunc.parametrize("scitype,from_mtype,to_mtype,fixture_index", keys, ids=ids)