text: import unittest
  
  from tests.context import wind_chill, Temp
  
  
  # format:
  # (F, MPH): F
  wind_chill_table = {
      (40, 5): 36,
      (40, 30): 28,
      (40, 60): 25,
      (15, 5): 7,
      (15, 25): -4,
      (15, 40): -8,
      (15, 60): -11,
      (0, 5): -11,
      (0, 30): -26,
      (0, 60): -33,
      (-15, 35): -48,
      (-15, 60): -55,
      (-30, 5): -46,
      (-30, 35): -69,
      (-30, 60): -76,
      (-45, 5): -63,
      (-45, 35): -89,
      (-45, 60): -98,
  }
  
  
  class WindChillTest(unittest.TestCase):
  
      def test_wind_chill_by_table(self):
          for temp_wind, wind_chill_f in wind_chill_table.items():
              temp_f, wind_speed = temp_wind
              self.assertEqual(
                  round(wind_chill(temp_f, wind_speed)), wind_chill_f)
  
      def test_return_type(self):
          self.assertIsInstance(wind_chill(40, 5), Temp)
          self.assertIsInstance(wind_chill(-45, 60), Temp)
  
      def test_input_temp_class(self):
          wc = wind_chill(Temp(-15, unit='c'), 10)
          self.assertIsInstance(wc, Temp)
          self.assertEqual(round(wc.c), -23)
  
      def test_temp50_wind4(self):
          self.assertEqual(round(wind_chill(50, 4)), 49)
  
      def test_temp50_wind3(self):
          self.assertRaises(ValueError, wind_chill, 50, 3)
  
      def test_temp51_wind3(self):
          self.assertRaises(ValueError, wind_chill, 51, 3)
  
      def test_temp51_wind4(self):
          self.assertRaises(ValueError, wind_chill, 51, 4)
  
      def test_temp100_wind60(self):
          self.assertRaises(ValueError, wind_chill, 100, 60)
  
      def test_temp0_wind0(self):
          self.assertRaises(ValueError, wind_chill, 0, 0)
  
  
  if __name__ == '__main__':
      unittest.main()
  