code: def test_fluss(I):
      L = 5
      excl_factor = 1
      custom_iac = naive_iac(I.shape[0])
      ref_cac = naive_cac(I, L, excl_factor)
      n_regimes = 3
      ref_rea = naive_rea(ref_cac, n_regimes, L, excl_factor)
      comp_cac, comp_rea = fluss(
          I, L, n_regimes, excl_factor, custom_iac
      )
      npt.assert_almost_equal(ref_cac, comp_cac)
      npt.assert_almost_equal(ref_rea, comp_rea)
  
imports: import functools
  import naive
  import numpy
  import numpy.testing
  import pytest
  from stumpy import aamp, core, floss, fluss, stump
  from stumpy.floss import _cac, _iac, _nnmark, _rea
label_desc: Use image node_id 10 for calling a global function with example usage: test_fluss(I) without return types