def test_is_string(self):
self.assertTrue(is_bytes_or_unicode(_OAuthClient.generate_timestamp()),
"Timestamp is not a string.")
def test_is_not_empty_string(self):
self.assertTrue(len(_OAuthClient.generate_timestamp()) > 0,
"Timestamp is an empty string.")
def test_is_positive_integer_string(self):
self.assertTrue(int(_OAuthClient.generate_timestamp()) > 0,
"Timestamp is not positive integer string.")
