def test_city_country(self):
"""test if get_city could return a formatted string"""
city_info = get_city('Shanghai', 'China')
self.assertEqual(city_info, 'Shanghai, China')
def test_get_city(self):
city_info = get_city('milano', 'italia')
self.assertEqual(city_info, "Milano,Italia")
def test_city_country(self):
formatted_city = get_city("Shanghai", "China")
self.assertEqual(formatted_city, "Shanghai,China")
def test_get_city_pop(self):
city_info = get_city('milano', 'italia', population=50000005)
self.assertEqual(city_info, "Milano,Italia - 50000005")