old_contents: #!/usr/bin/env python3
  # -*- coding: utf-8 -*-
  from numpy.testing import assert_approx_equal
  from UliEngineering.Physics.Light import *
  from UliEngineering.EngineerIO import auto_format
  import unittest
  
  class TestJohnsonNyquistNoise(unittest.TestCase):
      def test_lumen_to_candela_by_apex_angle(self):
          v = lumen_to_candela_by_apex_angle("25 lm", "120°")
          assert_approx_equal(v, 7.9577471546, significant=5)
          self.assertEqual(auto_format(lumen_to_candela_by_apex_angle, "25 lm", "120°"), "7.96 cd")
  
  
new_contents: #!/usr/bin/env python3
  # -*- coding: utf-8 -*-
  from numpy.testing import assert_approx_equal
  from UliEngineering.Physics.Light import *
  from UliEngineering.EngineerIO import auto_format
  import unittest
  
  class TestLight(unittest.TestCase):
      def test_lumen_to_candela_by_apex_angle(self):
          v = lumen_to_candela_by_apex_angle("25 lm", "120°")
          assert_approx_equal(v, 7.9577471546, significant=5)
          self.assertEqual(auto_format(lumen_to_candela_by_apex_angle, "25 lm", "120°"), "7.96 cd")
  
  
subject: Fix badly named test class