def METHOD_NAME():
    det = serpent.parse_det("sample_det.m")
    for key in det:
        if "_" in key:
            assert isinstance(det[key], int)
        elif isinstance(det[key], np.ndarray):
            assert det[key].shape[1] in [3, 13]
    # Check values
    assert_array_equal(
        det["DETphi"][6], [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 2.92709e-02, 0.00857, 16768]
    )
    assert_array_equal(det["DETphiE"][-3], [1.49182e01, 1.69046e01, 1.49182e01])