text: # Module to run tests on mcmc
  
  # TEST_UNICODE_LITERALS
  
  import numpy as np
  import pytest
  import pdb
  
  from pyigm.fN import mcmc
  
  
  def test_z3():
      """ Load FNConstraint from a set of FITS files
      """
      # Load
      all_fN_cs = mcmc.set_fn_data()
      assert len(all_fN_cs) == 17
  
  def test_z4():
      """ Load FNConstraint from a set of FITS files
      """
      # Load
      all_fN_cs = mcmc.set_fn_data(flg=4)
      assert len(all_fN_cs) == 12
  