'Make sure the Hash function does sha256 twice'

def test_hash(self):

    payload = u'test'
    expected = '\x95MZI\xfdp\xd9\xb8\xbc\xdb5\xd2R&x)\x95\x7f~\xf7\xfalt\xf8\x84\x19\xbd\xc5\xe8" DCTB \xf4'
    result = Hash(payload)
    self.assertEqual(expected, result)
