def test_mb_rest_headers(self):
        mb = MessageBusAPIClient(self.api_key)

        base_headers = mb.__base_headers__()
        self.assertEquals(len(base_headers.items()), 2)
        self.assertEquals(base_headers["X-MessageBus-Key"], self.api_key)

        post_headers = mb.__post_headers__()
        self.assertEquals(len(post_headers.items()), 1)
        self.assertEquals(post_headers["Content-Type"], "application/json; charset=utf-8")