def METHOD_NAME(self):
    self.db().store_certs_desc(FOUR_CERTS, 0)
    for i in range(4):
        sha256_hash = hashlib.sha256("hello-%d" % i).digest()
        cert = self.db().get_cert_by_sha256_hash(sha256_hash)
        self.assertEqual("hello-%d" % i, cert)