public void TestFetchRequest()
        {
            var twilioRestClient = Substitute.For <ITwilioRestClient>();
            var request          = new Request(
                HttpMethod.Get,
                Twilio.Rest.Domain.Api,
                "/2010-04-01/Accounts/ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/SIP/IpAccessControlLists/ALaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/IpAddresses/IPaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.json",
                ""
                );

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

            try
            {
                IpAddressResource.Fetch("ALaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "IPaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", client: twilioRestClient);
                Assert.Fail("Expected TwilioException to be thrown for 500");
            }
            catch (ApiException) {}
            twilioRestClient.Received().Request(request);
        }
        public void TestCreateRequest()
        {
            var twilioRestClient = Substitute.For <ITwilioRestClient>();
            var request          = new Request(
                HttpMethod.Post,
                Twilio.Rest.Domain.Api,
                "/2010-04-01/Accounts/ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX/SIP/IpAccessControlLists/ALXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX/IpAddresses.json",
                ""
                );

            request.AddPostParam("FriendlyName", Serialize("friendly_name"));
            request.AddPostParam("IpAddress", Serialize("ip_address"));
            twilioRestClient.AccountSid.Returns("ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX");
            twilioRestClient.Request(request).Throws(new ApiException("Server Error, no content"));

            try
            {
                IpAddressResource.Create("ALXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", "friendly_name", "ip_address", client: twilioRestClient);
                Assert.Fail("Expected TwilioException to be thrown for 500");
            }
            catch (ApiException) {}
            twilioRestClient.Received().Request(request);
        }