def test_negatives(self):
self.assertFalse(is_nice("jchzalrnumimnmhp"))
self.assertFalse(is_nice("haegwjzuvuyypxyu"))
self.assertFalse(is_nice("dvszwmarrgswjxmb"))
def test_one(self):
self.assertTrue(is_nice("ugknbfddgicrmopn"))
self.assertTrue(is_nice("aaa"))
