code: def test_photosic_reference() -> None:
      debut = np.array([79, 102])
      fin = np.array([100, 70])
      dbr = np.tile(np.array([147, 120]), 3)
      X = np.concatenate([debut, dbr, fin])
      cf_test = photonics.cf_photosic_reference(X)
      np.testing.assert_almost_equal(cf_test, 0.09069397)
  
imports: import os
  from unittest import SkipTest
  import warnings
  import typing
  import pytest
  import numpy
  from nevergrad.common import testing
  from .None import core
  from .None import photonics
label_desc: Use image node_id 10 for calling a global function with example usage: test_photosic_reference() without return types