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\",\"business_sid\": \"BXaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\",\"sid\": \"BZaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\",\"links\": {\"branded_channels\": \"https://preview.twilio.com/TrustedComms/Businesses/BXaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Brands/BZaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/BrandedChannels\"},\"url\": \"https://preview.twilio.com/TrustedComms/Businesses/BXaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Brands/BZaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"}"
                         ));

            var response = BrandResource.Fetch("BXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", "BZXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", client: twilioRestClient);

            Assert.NotNull(response);
        }
        public void TestFetchRequest()
        {
            var twilioRestClient = Substitute.For <ITwilioRestClient>();
            var request          = new Request(
                HttpMethod.Get,
                Twilio.Rest.Domain.Preview,
                "/TrustedComms/Businesses/BXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX/Brands/BZXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
                ""
                );

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

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