def get_temperature(self, units='celsius'):
# Returns random temperature within defined range
current_temp = random.randrange(self.lower_bound, self.upper_bound)
if units == 'fahrenheit':
current_temp = utils.convert_temp_units(
current_temp,
units_from='celsius',
units_to='fahrenheit'
)
return current_temp
def test_unknown_to_units(self):
"""Unknown units cannot be converted from"""
with self.assertRaises(KeyError):
utils.convert_temp_units(68.0, 'fahrenheit', 'invalid')
def test_convert_fahrenheit_to_celsius(self):
"""Fahrenheit is converted to celsius"""
self.assertEquals(
utils.convert_temp_units(68.0, 'fahrenheit', 'celsius'), 20.0)
def test_unknown_from_units(self):
"""Unknown units cannot be converted from"""
with self.assertRaises(KeyError):
utils.convert_temp_units(68.0, 'invalid', 'celsius')
def test_convert_celsius_to_fahrenheit(self):
"""Celsisus is converted to fahrenheit"""
self.assertEquals(
utils.convert_temp_units(20.0, 'celsius', 'fahrenheit'), 68.0)