def test_uniquess_to_a_point(self):
        seen = {}

        for _ in range(10000):
            nonce = utils.make_nonce()
            self.assertTrue(nonce not in seen)
            seen[nonce] = True
 def test_make_nonce(self):
     nonce = utils.make_nonce()
     self.assertRegexpMatches(
         nonce,
         r'^001'
         r'[2-9][0-9]{3}-(0[1-9]|1[0-2])-(0[1-9]|[12][0-9]|3[01])'
         r'T([01][0-9]|2[0-3])(:[0-5][0-9]){2}Z'
         r'[A-Za-z0-9]{6}$'
     )