public void TestFetchResponse()
        {
            var twilioRestClient = Substitute.For <ITwilioRestClient>();

            twilioRestClient.AccountSid.Returns("ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX");
            twilioRestClient.Request(Arg.Any <Request>())
            .Returns(new Response(
                         System.Net.HttpStatusCode.OK,
                         "{\"account_sid\": \"ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\",\"api_version\": \"2010-04-01\",\"auth_type\": \"IP_ACL\",\"date_created\": \"2015-07-20T17:27:10Z\",\"date_updated\": \"2015-10-09T11:36:32Z\",\"domain_name\": \"dunder-mifflin-scranton.sip.twilio.com\",\"friendly_name\": \"Scranton Office\",\"sip_registration\": true,\"sid\": \"SDaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\",\"url\": \"https://trunking.twilio.com/v1/Trunks/TRaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/TerminatingSipDomains/SDaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\",\"voice_fallback_method\": \"POST\",\"voice_fallback_url\": null,\"voice_method\": \"POST\",\"voice_status_callback_method\": \"POST\",\"voice_status_callback_url\": null,\"voice_url\": \"https://demo.twilio.com/welcome/voice/\",\"trunk_sid\": \"TRaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\",\"links\": {\"sip_domain\": \"https://api.twilio.com/2010-04-01/Accounts/ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/SIP/Domains/SDaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"}}"
                         ));

            var response = TerminatingSipDomainResource.Fetch("TRXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", "SDXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", client: twilioRestClient);

            Assert.NotNull(response);
        }
        public void TestFetchRequest()
        {
            var twilioRestClient = Substitute.For <ITwilioRestClient>();
            var request          = new Request(
                HttpMethod.Get,
                Twilio.Rest.Domain.Trunking,
                "/v1/Trunks/TRXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX/TerminatingSipDomains/SDXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
                ""
                );

            twilioRestClient.Request(request).Throws(new ApiException("Server Error, no content"));

            try
            {
                TerminatingSipDomainResource.Fetch("TRXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", "SDXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", client: twilioRestClient);
                Assert.Fail("Expected TwilioException to be thrown for 500");
            }
            catch (ApiException) {}
            twilioRestClient.Received().Request(request);
        }