text: from unittest import TestCase
  from openaps.glucose.display import Display
  
  
  class DisplayTestCase (TestCase):
      """
          Checks that the display function rounds to the correct number
          of significant digits
      """
  
      def test_display_mmol_l(self):
          self.assertEqual(Display.display('mmol/L', 5.490000), 5.5)
          self.assertEqual(Display.display('mmol/L', 5.500001), 5.5)
          self.assertEqual(Display.display('mmol/L', 5.510000), 5.5)
          self.assertEqual(Display.display('mmol/L', 5.590000), 5.6)
  
      def test_display_mg_dl(self):
          self.assertEqual(Display.display('mg/dL', 147.078), 147)
          self.assertEqual(Display.display('mg/dL', 268.236), 268)
          self.assertEqual(Display.display('mg/dL', 605.970), 606)
          self.assertEqual(Display.display('mg/dL', 623.268), 623)
  