'Verify mac signatures correctness
TODO: verify hmac-sha-256'

def test_prepare_mac_header(self):

    self.assertEqual(prepare_mac_header(**self.mac_plain), self.auth_plain)
    self.assertEqual(prepare_mac_header(**self.mac_body), self.auth_body)
    self.assertEqual(prepare_mac_header(**self.mac_both), self.auth_both)
