'From http://en.wikipedia.org/wiki/Hash-based_message_authentication_code
HMAC_SHA1("key", "The quick brown fox jumps over the lazy dog")
= 0xde7c9b85b8b78aa6bc8a7a36f70a90701c9db4d9'

def test_hmac(self):

    message = 'The    quick    brown    fox    jumps    over    the    lazy    dog'
    key = 'a2V5'
    signature = '3nybhbi3iqa8ino29wqQcBydtNk='
    self.assertEqual(signature, _client.sign_hmac(key, message))
