def METHOD_NAME(self):
    data = bytes_to_intlist(self.secret_msg)
    encrypted = intlist_to_bytes(aes_ctr_encrypt(data, self.key, self.iv))
    self.assertEqual(
        encrypted,
        b'\x03\xc7\xdd\xd4\x8e\xb3\xbc\x1a*O\xdc1\x12+8Aio\xd1z\xb5#\xaf\x08')