def test_city_with_empty_string(self): self.assertFalse(Event.is_valid_city(""))
def test_city_contains_letter(self): self.assertFalse(Event.is_valid_city("misk0lc"))
def test_city_with_lower(self): self.assertTrue(Event.is_valid_city("miskolc"))
def test_city_with_upper(self): self.assertTrue(Event.is_valid_city("MISKOLC"))
def test_city_with_wrong_string(self): self.assertFalse(Event.is_valid_city("iskolc"))
def test_city_with_valid_string(self): self.assertTrue(Event.is_valid_city("Miskolc"))