def test_02_elves_mass_calulation(self):
     output = elves.amount_of_fuel_needed([10])
     self.assertEqual(output, 1)
 def test_05_elves_mass_calulation_str(self):
     with self.assertRaises(TypeError):
         elves.amount_of_fuel_needed("Santa")
 def test_07_multiple_values(self):
     output = elves.amount_of_fuel_needed([20.0, 20])
     self.assertEqual(output, 8)
 def test_04_elves_mass_calulation_float(self):
     output = elves.amount_of_fuel_needed([20.0])
     self.assertEqual(output, 4)