text: """
  Tests for ultimate analysis class object.
  """
  
  import chemics as cm
  from pytest import approx
  
  
  def test_ultimate_bases():
      ult = cm.Ultimate([60.08, 5.44, 25.01, 0.88, 0.73, 7.86, 9.00], 'ad')
      assert ult.ar_basis == approx([46.86, 6.70, 39.04, 0.68, 0.56, 6.13, 29.02], rel=1e-1)
  