old_contents: import pyradex.fjdu
  
  def test_simple():
  
      FF = pyradex.fjdu.Fjdu(datapath='examples/', species='co', column=1e15,
                             density=1e3, temperature=20)
  
      assert FF.params['ncol_x_cgs'] == 1e15
      assert FF.params['dens_x_cgs'] == 1e3
      assert FF.params['h2_density_cgs'] == 1e3
      assert FF.params['tkin'] == 20
  
      tbl = FF()
  
new_contents: import pyradex.fjdu
  import numpy as np
  
  def test_simple():
  
      FF = pyradex.fjdu.Fjdu(datapath='examples/', species='co', column=1e15,
                             density=1e3, temperature=20)
  
      assert FF.params['ncol_x_cgs'] == 1e15
      assert FF.params['dens_x_cgs'] == 1e3
      assert FF.params['h2_density_cgs'] == 1e3
      assert FF.params['tkin'] == 20
  
      tbl = FF()
  
      np.testing.assert_almost_equal(tbl[0]['Tex'], 8.69274406690759)
  
subject: make the fjdu test run