public void ToFullUrl_Preceeding_Slash_UserId_Specified()
        {
            string apiCall = FitbitClientHelperExtensions.ToFullUrl("/1/user/{0}/friends.json", "2KNXXX");

            Assert.IsNotNull(apiCall);
            Assert.IsFalse(string.IsNullOrWhiteSpace(apiCall));
            Assert.AreEqual("https://api.fitbit.com/1/user/2KNXXX/friends.json", apiCall);
        }
        public void ToFullUrl_Preceeding_Slash()
        {
            string apiCall = FitbitClientHelperExtensions.ToFullUrl("/1/user/-/devices.json");

            Assert.IsNotNull(apiCall);
            Assert.IsFalse(string.IsNullOrWhiteSpace(apiCall));
            Assert.AreEqual("https://api.fitbit.com/1/user/-/devices.json", apiCall);
        }