def METHOD_NAME(tmp_path):
    """Test optical flow calculation by perturbing model winds"""
    pytest.importorskip("pysteps")
    kgo_dir = acc.kgo_root() / "nowcast-optical-flow-from-winds"
    kgo_path = kgo_dir / "kgo_15min.nc"
    input_paths = [
        kgo_dir / f"20190101T{hhmm}Z-{RADAR_EXT}.nc" for hhmm in ("0645", "0700")
    ]
    flow_path = (
        kgo_dir / "20190101T0700Z-PT0000H00M-wind_components_on_pressure_levels.nc"
    )
    oe_path = kgo_dir / "20190101T0700Z-PT0000H00M-orographic_enhancement.nc"
    output_path = tmp_path / "output.nc"
    args = [flow_path, oe_path, *input_paths, "--output", output_path]
    run_cli(args)
    acc.compare(output_path, kgo_path)