def test_12611_is_nex_prime_of_12601(self): assert next_prime(12601) == 12611
def test_13_is_next_prime_of_11(self): assert next_prime(11) == 13
def test_17_is_next_prime_of_15(self): assert next_prime(15) == 17
def test_3_is_next_prime_of_2(self): assert next_prime(2) == 3